2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2022 Free Software Foundation, Inc.
6 #This file is part of GCC.
8 #GCC is free software; you can redistribute it and/or modify it under
9 #the terms of the GNU General Public License as published by the Free
10 #Software Foundation; either version 3, or (at your option) any later
13 #GCC is distributed in the hope that it will be useful, but WITHOUT
14 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 #You should have received a copy of the GNU General Public License
19 #along with GCC; see the file COPYING3. If not see
20 #<http://www.gnu.org/licenses/>.
22 # --------------------------------
23 # Initialization and sanity checks
24 # --------------------------------
27 AC_CONFIG_SRCDIR(tree.cc)
28 AC_CONFIG_HEADER(auto-host.h:config.in)
30 gcc_version=`cat $srcdir/BASE-VER`
32 # Determine the host, build, and target systems
37 # Determine the noncanonical host name, for Ada.
40 # Determine the noncanonical target name, for directory use.
41 ACX_NONCANONICAL_TARGET
43 # Used for constructing correct paths for offload compilers.
44 real_target_noncanonical=${target_noncanonical}
47 # Determine the target- and build-specific subdirectories
50 # Set program_transform_name
53 # Check for bogus environment variables.
54 # Test if LIBRARY_PATH contains the notation for the current directory
55 # since this would lead to problems installing/building glibc.
56 # LIBRARY_PATH contains the current directory if one of the following
58 # - one of the terminals (":" and ";") is the first or last sign
59 # - two terminals occur directly after each other
60 # - the path contains an element with a dot in it
61 AC_MSG_CHECKING(LIBRARY_PATH variable)
63 case ${LIBRARY_PATH} in
64 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
65 library_path_setting="contains current directory"
68 library_path_setting="ok"
72 AC_MSG_RESULT($library_path_setting)
73 if test "$library_path_setting" != "ok"; then
75 *** LIBRARY_PATH shouldn't contain the current directory when
76 *** building gcc. Please change the environment variable
77 *** and run configure again.])
80 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
81 # since this would lead to problems installing/building glibc.
82 # GCC_EXEC_PREFIX contains the current directory if one of the following
84 # - one of the terminals (":" and ";") is the first or last sign
85 # - two terminals occur directly after each other
86 # - the path contains an element with a dot in it
87 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
89 case ${GCC_EXEC_PREFIX} in
90 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
91 gcc_exec_prefix_setting="contains current directory"
94 gcc_exec_prefix_setting="ok"
98 AC_MSG_RESULT($gcc_exec_prefix_setting)
99 if test "$gcc_exec_prefix_setting" != "ok"; then
101 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
102 *** building gcc. Please change the environment variable
103 *** and run configure again.])
110 # Specify the local prefix
112 AC_ARG_WITH(local-prefix,
113 [AS_HELP_STRING([--with-local-prefix=DIR],
114 [specifies directory to put local include])],
115 [case "${withval}" in
116 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
118 *) local_prefix=$with_local_prefix ;;
121 # Default local prefix if it is empty
122 if test x$local_prefix = x; then
123 local_prefix=/usr/local
126 AC_ARG_WITH([native-system-header-dir],
127 [ --with-native-system-header-dir=dir
128 use dir as the directory to look for standard
129 system header files in. Defaults to /usr/include.],
131 case ${with_native_system_header_dir} in
132 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
133 /* | [[A-Za-z]]:[[\\/]]*) ;;
134 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
136 configured_native_system_header_dir="${withval}"
137 ], [configured_native_system_header_dir=])
139 AC_ARG_WITH(build-sysroot,
140 [AS_HELP_STRING([--with-build-sysroot=sysroot],
141 [use sysroot as the system root during the build])],
142 [if test x"$withval" != x ; then
143 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
145 [SYSROOT_CFLAGS_FOR_TARGET=])
146 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
148 if test "x$prefix" = xNONE; then
149 test_prefix=/usr/local
153 if test "x$exec_prefix" = xNONE; then
154 test_exec_prefix=$test_prefix
156 test_exec_prefix=$exec_prefix
160 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
161 [search for usr/lib, usr/include, et al, within DIR])],
163 case ${with_sysroot} in
165 */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;;
167 case ${with_sysroot} in
168 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
169 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
172 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
173 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
175 case ${TARGET_SYSTEM_ROOT} in
176 "${test_prefix}"|"${test_prefix}/"*|\
177 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
178 '${prefix}'|'${prefix}/'*|\
179 '${exec_prefix}'|'${exec_prefix}/'*)
180 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
181 TARGET_SYSTEM_ROOT_DEFINE="$t"
186 TARGET_SYSTEM_ROOT_DEFINE=
187 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
189 AC_SUBST(TARGET_SYSTEM_ROOT)
190 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
191 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
193 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
194 # passed in by the toplevel make and thus we'd get different behavior
195 # depending on where we built the sources.
197 # Specify the g++ header file directory
198 AC_ARG_WITH(gxx-include-dir,
199 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
200 [specifies directory to put g++ header files])],
201 [case "${withval}" in
202 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
204 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
207 # If both --with-sysroot and --with-gxx-include-dir are passed, we interpolate
208 # the former in the latter and, upon success, compute gcc_gxx_include_dir as
209 # relative to the sysroot.
210 gcc_gxx_include_dir_add_sysroot=0
212 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
213 if test x${gcc_gxx_include_dir} = x; then
214 if test x${enable_version_specific_runtime_libs} = xyes; then
215 gcc_gxx_include_dir='${libsubdir}/include/c++'
217 libstdcxx_incdir='include/c++/$(version)'
218 if test x$host != x$target; then
219 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
221 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
223 elif test "${with_sysroot+set}" = set; then
224 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
225 if test "${gcc_gxx_without_sysroot}"; then
226 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
227 gcc_gxx_include_dir_add_sysroot=1
231 # Configuration for an alternate set of C++ headers.
232 gcc_gxx_libcxx_include_dir=
233 # Specify the alternate g++ header file directory
234 AC_ARG_WITH(gxx-libcxx-include-dir,
235 [AS_HELP_STRING([--with-gxx-libcxx-include-dir=DIR],
236 [specifies directory to find libc++ header files])],
237 [case "${withval}" in
238 yes) AC_MSG_ERROR(bad value ${withval} given for libc++ include directory) ;;
240 *) gcc_gxx_libcxx_include_dir=$with_gxx_libcxx_include_dir ;;
243 # If both --with-sysroot and --with-gxx-libcxx-include-dir are passed, we
244 # check to see if the latter starts with the former and, upon success, compute
245 # gcc_gxx_libcxx_include_dir as relative to the sysroot.
246 gcc_gxx_libcxx_include_dir_add_sysroot=0
248 if test x${gcc_gxx_libcxx_include_dir} != x; then
249 AC_DEFINE(ENABLE_STDLIB_OPTION, 1,
250 [Define if the -stdlib= option should be enabled.])
252 AC_DEFINE(ENABLE_STDLIB_OPTION, 0)
254 # ??? This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
255 if test x${gcc_gxx_libcxx_include_dir} = x; then
256 if test x${enable_version_specific_runtime_libs} = xyes; then
257 gcc_gxx_libcxx_include_dir='${libsubdir}/libc++_include/c++/v1'
259 libcxx_incdir='libc++_include/c++/$(version)/v1'
260 if test x$host != x$target; then
261 libcxx_incdir="$target_alias/$libcxx_incdir"
263 gcc_gxx_libcxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libcxx_incdir"
265 elif test "${with_sysroot+set}" = set; then
266 gcc_gxx_libcxx_without_sysroot=`expr "${gcc_gxx_libcxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
267 if test "${gcc_gxx_libcxx_without_sysroot}"; then
268 gcc_gxx_libcxx_include_dir="${gcc_gxx_libcxx_without_sysroot}"
269 gcc_gxx_libcxx_include_dir_add_sysroot=1
273 AC_ARG_WITH(cpp_install_dir,
274 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
275 [install the user visible C preprocessor in DIR
276 (relative to PREFIX) as well as PREFIX/bin])],
277 [if test x$withval = xyes; then
278 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
279 elif test x$withval != xno; then
280 cpp_install_dir=$withval
283 # We would like to our source tree to be readonly. However when releases or
284 # pre-releases are generated, the flex/bison generated files as well as the
285 # various formats of manuals need to be included along with the rest of the
286 # sources. Therefore we have --enable-generated-files-in-srcdir to do
289 AC_MSG_CHECKING([whether to place generated files in the source directory])
290 dnl generated-files-in-srcdir is disabled by default
291 AC_ARG_ENABLE(generated-files-in-srcdir,
292 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
293 [put copies of generated files in source dir
294 intended for creating source tarballs for users
295 without texinfo bison or flex])],
296 generated_files_in_srcdir=$enableval,
297 generated_files_in_srcdir=no)
299 AC_MSG_RESULT($generated_files_in_srcdir)
301 if test "$generated_files_in_srcdir" = "yes"; then
308 # -------------------
309 # Find default linker
310 # -------------------
314 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
315 gnu_ld_flag="$with_gnu_ld",
320 ld64_flag=yes # Darwin can only use a ld64-compatible linker.
321 dsymutil_flag=yes # Darwin uses dsymutil to link debug.
329 # With pre-defined ld
331 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
332 DEFAULT_LINKER="$with_ld")
333 if test x"${DEFAULT_LINKER+set}" = x"set"; then
334 if test ! -x "$DEFAULT_LINKER"; then
335 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
336 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
338 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep ld64- > /dev/null; then
341 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
342 [Define to enable the use of a default linker.])
345 AC_MSG_CHECKING([whether a default linker was specified])
346 if test x"${DEFAULT_LINKER+set}" = x"set"; then
347 if test x"$gnu_ld_flag" = x"no"; then
348 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
350 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
356 # With demangler in GNU ld
357 AC_ARG_WITH(demangler-in-ld,
358 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
359 demangler_in_ld="$with_demangler_in_ld",
362 # Allow the user to specify a dsymutil executable (used on Darwin only, so far)
363 AC_ARG_WITH(dsymutil,
364 [AS_HELP_STRING([--with-dsymutil], [arrange to use the specified dsymutil (full pathname)])],
365 DEFAULT_DSYMUTIL="$with_dsymutil")
368 if test x"${DEFAULT_DSYMUTIL+set}" = x"set"; then
369 if test ! -x "$DEFAULT_DSYMUTIL"; then
370 AC_MSG_ERROR([cannot execute: $DEFAULT_DSYMUTIL: check --with-dsymutil or env. var. DEFAULT_DSYMUTIL])
372 if dsymutil_vers=`$DEFAULT_DSYMUTIL -v /dev/null 2>&1`; then
376 AC_DEFINE_UNQUOTED(DEFAULT_DSYMUTIL,"$DEFAULT_DSYMUTIL",
377 [Define to enable the use of a default debug linker.])
380 AC_MSG_CHECKING([whether a default dsymutil was specified])
381 if test x"${DEFAULT_DSYMUTIL+set}" = x"set"; then
382 AC_MSG_RESULT([yes ($DEFAULT_DSYMUTIL)])
387 # ----------------------
388 # Find default assembler
389 # ----------------------
393 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
394 gas_flag="$with_gnu_as",
398 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
399 DEFAULT_ASSEMBLER="$with_as")
400 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
401 if test ! -x "$DEFAULT_ASSEMBLER"; then
402 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
403 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
406 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
407 [Define to enable the use of a default assembler.])
410 AC_MSG_CHECKING([whether a default assembler was specified])
411 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
412 if test x"$gas_flag" = x"no"; then
413 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
415 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
425 # If a non-executable a.out is present (e.g. created by GNU as above even if
426 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
427 # file, even when creating an executable, so an execution test fails.
428 # Remove possible default executable files to avoid this.
430 # FIXME: This really belongs into AC_PROG_CC and can be removed once
431 # Autoconf includes it.
432 rm -f a.out a.exe b.out
434 # Find the native compiler
437 ACX_PROG_GNAT([-I"$srcdir"/ada/libgnat])
438 ACX_PROG_GDC([-I"$srcdir"/d])
440 # Do configure tests with the C++ compiler, since that's what we build with.
443 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
444 # optimizations to be activated explicitly by the toplevel.
447 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
448 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
454 # Determine PICFLAG for target gnatlib.
455 GCC_PICFLAG_FOR_TARGET
456 AC_SUBST(PICFLAG_FOR_TARGET)
458 # -------------------------
459 # Check C compiler features
460 # -------------------------
462 AC_USE_SYSTEM_EXTENSIONS
468 AC_CHECK_SIZEOF(ino_t)
469 AC_CHECK_SIZEOF(dev_t)
471 # Select the right stat being able to handle 64bit inodes, if needed.
472 if test "$enable_largefile" != no; then
473 case "$host, $build" in
474 *-*-aix*,*|*,*-*-aix*)
475 if test "$ac_cv_sizeof_ino_t" == "4" -a "$ac_cv_sizeof_dev_t" == 4; then
476 AC_DEFINE(HOST_STAT_FOR_64BIT_INODES, stat64x,
477 [Define which stat syscall is able to handle 64bit indodes.])
483 # sizeof(char) is 1 by definition.
484 AC_CHECK_SIZEOF(void *)
485 AC_CHECK_SIZEOF(short)
487 AC_CHECK_SIZEOF(long)
488 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
490 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
491 AC_MSG_ERROR([uint64_t or int64_t not found])
494 # check what underlying integer type int64_t uses
495 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
496 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
500 template <typename T> struct X { };
502 struct X<long> { typedef long t; };
503 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
504 if test "$ac_cv_int64_t_type" = "long"; then
505 AC_DEFINE(INT64_T_IS_LONG, 1,
506 [Define if int64_t uses long as underlying type.])
508 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
512 template <typename T> struct X { };
514 struct X<long long> { typedef long long t; };
515 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
518 AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [
519 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
521 ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])])
522 if test $ac_cv_std_swap_in_utility = yes; then
523 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1,
524 [Define if <utility> defines std::swap.])
527 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
528 # If the host compiler is affected by the bug, and we build with optimization
529 # enabled (which happens e.g. when cross-compiling), the pool allocator may
530 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
531 # Since there is no reliable feature check for the presence of this bug,
532 # we simply use a GCC version number check. (This should never trigger for
533 # stages 2 or 3 of a native bootstrap.)
535 if test "$GCC" = yes; then
536 saved_CXXFLAGS="$CXXFLAGS"
538 # The following test compilation will succeed if and only if $CXX accepts
539 # -fno-strict-aliasing *and* is older than GCC 4.3.
540 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
541 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
542 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
543 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
544 #error compiler not affected by placement new aliasing bug
547 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
548 [AC_MSG_RESULT([no])])
550 CXXFLAGS="$saved_CXXFLAGS"
552 AC_SUBST(aliasing_flags)
556 # ---------------------
557 # Warnings and checking
558 # ---------------------
560 # Check $CC warning features (if it's GCC).
561 # We want to use -pedantic, but we don't want warnings about
565 # * C++11 narrowing conversions in { }
566 # So, we only use -pedantic if we can disable those warnings.
568 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
569 AC_ARG_ENABLE(build-format-warnings,
570 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
571 [],[enable_build_format_warnings=yes])
572 AS_IF([test $enable_build_format_warnings = no],
573 [wf_opt=-Wno-format],[wf_opt=])
574 ACX_PROG_CXX_WARNING_OPTS(
575 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ],
576 [-Wcast-qual $wf_opt])),
578 ACX_PROG_CC_WARNING_OPTS(
579 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes ],
580 [])), [c_loose_warn])
581 ACX_PROG_CXX_WARNING_OPTS(
582 m4_quote(m4_do([-Wmissing-format-attribute ],
583 [-Woverloaded-virtual])), [strict_warn])
584 ACX_PROG_CC_WARNING_OPTS(
585 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
586 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
587 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
588 [-Wno-overlength-strings])), [strict_warn])
589 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
591 # The above macros do nothing if the compiler is not GCC. However, the
592 # Makefile has more goo to add other flags, so these variables are used
593 # to enable warnings only for GCC.
596 if test "x$GCC" = "xyes"; then
597 warn_cflags='$(GCC_WARN_CFLAGS)'
598 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
600 AC_SUBST(warn_cflags)
601 AC_SUBST(warn_cxxflags)
603 # Disable exceptions and RTTI if building with g++
604 ACX_PROG_CC_WARNING_OPTS(
605 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
608 # Enable expensive internal checks
610 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
614 AC_ARG_ENABLE(checking,
615 [AS_HELP_STRING([[--enable-checking[=LIST]]],
616 [enable expensive run-time checks. With LIST,
617 enable only specific categories of checks.
618 Categories are: yes,no,all,none,release.
619 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc,
620 rtlflag,rtl,runtime,tree,valgrind,types])],
621 [ac_checking_flags="${enableval}"],[
622 # Determine the default checks.
623 if test x$is_release = x ; then
624 ac_checking_flags=yes,extra
626 ac_checking_flags=release
628 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
629 for check in release $ac_checking_flags
632 # these set all the flags to specific states
633 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
634 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ;
635 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
636 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
637 ac_tree_checking=1 ; ac_valgrind_checking= ;
638 ac_types_checking=1 ;;
639 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
640 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
641 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
642 ac_rtlflag_checking= ; ac_runtime_checking= ;
643 ac_tree_checking= ; ac_valgrind_checking= ;
644 ac_types_checking= ;;
645 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
646 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ;
647 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
648 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
649 ac_tree_checking=1 ; ac_valgrind_checking= ;
650 ac_types_checking=1 ;;
651 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
652 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
653 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
654 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
655 ac_tree_checking= ; ac_valgrind_checking= ;
656 ac_types_checking= ;;
657 # these enable particular checks
658 assert) ac_assert_checking=1 ;;
659 df) ac_df_checking=1 ;;
660 extra) ac_extra_checking=1 ;;
661 fold) ac_fold_checking=1 ;;
662 gc) ac_gc_checking=1 ;;
663 gcac) ac_gc_always_collect=1 ;;
664 gimple) ac_gimple_checking=1 ;;
665 misc) ac_checking=1 ;;
666 rtl) ac_rtl_checking=1 ;;
667 rtlflag) ac_rtlflag_checking=1 ;;
668 runtime) ac_runtime_checking=1 ;;
669 tree) ac_tree_checking=1 ;;
670 types) ac_types_checking=1 ;;
671 valgrind) ac_valgrind_checking=1 ;;
672 *) AC_MSG_ERROR(unknown check category $check) ;;
678 if test x$ac_checking != x ; then
679 AC_DEFINE(CHECKING_P, 1,
680 [Define to 0/1 if you want more run-time sanity checks. This one gets a grab
681 bag of miscellaneous but relatively cheap checks.])
682 nocommon_flag=-fno-common
684 AC_DEFINE(CHECKING_P, 0)
686 AC_SUBST(nocommon_flag)
687 if test x$ac_extra_checking != x ; then
688 AC_DEFINE(ENABLE_EXTRA_CHECKING, 1,
689 [Define to 0/1 if you want extra run-time checking that might affect code
692 AC_DEFINE(ENABLE_EXTRA_CHECKING, 0)
694 if test x$ac_df_checking != x ; then
695 AC_DEFINE(ENABLE_DF_CHECKING, 1,
696 [Define if you want more run-time sanity checks for dataflow.])
698 if test x$ac_assert_checking != x ; then
699 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
700 [Define if you want assertions enabled. This is a cheap check.])
702 if test x$ac_gimple_checking != x ; then
703 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
704 [Define if you want operations on GIMPLE (the basic data structure of
705 the high-level optimizers) to be checked for dynamic type safety at
706 runtime. This is moderately expensive.])
708 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
709 if test x$ac_runtime_checking != x ; then
710 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
711 [Define if you want runtime assertions enabled. This is a cheap check.])
713 if test x$ac_tree_checking != x ; then
714 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
715 [Define if you want all operations on trees (the basic data
716 structure of the front ends) to be checked for dynamic type safety
717 at runtime. This is moderately expensive.
721 if test x$ac_types_checking != x ; then
722 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
723 [Define if you want all gimple types to be verified after gimplifiation.
727 AC_SUBST(TREECHECKING)
728 if test x$ac_rtl_checking != x ; then
729 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
730 [Define if you want all operations on RTL (the basic data structure
731 of the optimizer and back end) to be checked for dynamic type safety
732 at runtime. This is quite expensive.])
734 if test x$ac_rtlflag_checking != x ; then
735 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
736 [Define if you want RTL flag accesses to be checked against the RTL
737 codes that are supported for each access macro. This is relatively
740 if test x$ac_gc_checking != x ; then
741 AC_DEFINE(ENABLE_GC_CHECKING, 1,
742 [Define if you want the garbage collector to do object poisoning and
743 other memory allocation checks. This is quite expensive.])
745 if test x$ac_gc_always_collect != x ; then
746 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
747 [Define if you want the garbage collector to operate in maximally
748 paranoid mode, validating the entire heap and collecting garbage at
749 every opportunity. This is extremely expensive.])
751 if test x$ac_fold_checking != x ; then
752 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
753 [Define if you want fold checked that it never destructs its argument.
754 This is quite expensive.])
756 valgrind_path_defines=
759 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
760 dnl # an if statement. This was the source of very frustrating bugs
761 dnl # in converting to autoconf 2.5x!
762 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
764 # It is certainly possible that there's valgrind but no valgrind.h.
765 # GCC relies on making annotations so we must have both.
766 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
767 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
768 [[#include <valgrind/memcheck.h>
769 #ifndef VALGRIND_DISCARD
770 #error VALGRIND_DISCARD not defined
772 [gcc_cv_header_valgrind_memcheck_h=yes],
773 [gcc_cv_header_valgrind_memcheck_h=no])
774 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
775 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
776 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
777 [[#include <memcheck.h>
778 #ifndef VALGRIND_DISCARD
779 #error VALGRIND_DISCARD not defined
781 [gcc_cv_header_memcheck_h=yes],
782 [gcc_cv_header_memcheck_h=no])
783 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
784 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
785 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
786 [Define if valgrind's valgrind/memcheck.h header is installed.])
788 if test $gcc_cv_header_memcheck_h = yes; then
789 AC_DEFINE(HAVE_MEMCHECK_H, 1,
790 [Define if valgrind's memcheck.h header is installed.])
793 if test x$ac_valgrind_checking != x ; then
794 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
795 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
796 if test "x$valgrind_path" = "x" \
797 || (test $have_valgrind_h = no \
798 && test $gcc_cv_header_memcheck_h = no \
799 && test $gcc_cv_header_valgrind_memcheck_h = no); then
800 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
802 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
803 valgrind_command="$valgrind_path -q"
804 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
805 [Define if you want to run subprograms and generated programs
806 through valgrind (a memory checker). This is extremely expensive.])
808 AC_SUBST(valgrind_path_defines)
809 AC_SUBST(valgrind_command)
811 # Enable code coverage collection
812 AC_ARG_ENABLE(coverage,
813 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
814 [enable compiler's code coverage collection.
815 Use to measure compiler performance and locate
816 unused parts of the compiler. With LEVEL, specify
817 optimization. Values are opt, noopt,
819 [case "${enableval}" in
821 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0 -fkeep-static-functions"
824 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2 -fkeep-static-functions"
827 # a.k.a. --disable-coverage
831 AC_MSG_ERROR(unknown coverage setting $enableval)
835 AC_SUBST(coverage_flags)
837 AC_ARG_ENABLE(gather-detailed-mem-stats,
838 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
839 [enable detailed memory allocation stats gathering])], [],
840 [enable_gather_detailed_mem_stats=no])
841 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
842 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
843 [Define to enable detailed memory allocation stats gathering.])
845 AC_ARG_ENABLE(valgrind-annotations,
846 [AS_HELP_STRING([--enable-valgrind-annotations],
847 [enable valgrind runtime interaction])], [],
848 [enable_valgrind_annotations=no])
849 if test x$enable_valgrind_annotations != xno \
850 || test x$ac_valgrind_checking != x; then
851 if (test $have_valgrind_h = no \
852 && test $gcc_cv_header_memcheck_h = no \
853 && test $gcc_cv_header_valgrind_memcheck_h = no); then
854 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
856 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
857 [Define to get calls to the valgrind runtime enabled.])
860 # -------------------------------
861 # Miscenalleous configure options
862 # -------------------------------
864 # Determine whether or not multilibs are enabled.
865 AC_ARG_ENABLE(multilib,
866 [AS_HELP_STRING([--enable-multilib],
867 [enable library support for multiple ABIs])],
868 [], [enable_multilib=yes])
869 AC_SUBST(enable_multilib)
871 # Determine whether or not multiarch is enabled.
872 AC_ARG_ENABLE(multiarch,
873 [AS_HELP_STRING([--enable-multiarch],
874 [enable support for multiarch paths])],
875 [case "${enableval}" in
876 yes|no|auto) enable_multiarch=$enableval;;
877 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
878 esac], [enable_multiarch=auto])
879 if test x${enable_multiarch} = xauto; then
880 if test x${with_native_system_header_dir} != x; then
881 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
884 if test x$host != x$target && test "x$with_sysroot" = x; then
885 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
889 AC_MSG_CHECKING(for multiarch configuration)
890 AC_SUBST(enable_multiarch)
891 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
893 # needed for setting the multiarch name for soft-float/hard-float ABIs
897 # default stack clash protection guard size as power of twos in bytes.
898 # Please keep these in sync with params.def.
902 # Keep the default value when the option is not used to 0, this allows us to
903 # distinguish between the cases where the user specifially set a value via
904 # configure and when the normal default value is used.
905 AC_ARG_WITH(stack-clash-protection-guard-size,
906 [AS_HELP_STRING([--with-stack-clash-protection-guard-size=size],
907 [Set the default stack clash protection guard size for specific targets as a power of two in bytes.])],
908 [DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size"], [DEFAULT_STK_CLASH_GUARD_SIZE=0])
909 if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \
910 && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \
911 || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then
912 AC_MSG_ERROR(m4_normalize([
913 Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. \
914 Must be between $stk_clash_min and $stk_clash_max.]))
917 AC_DEFINE_UNQUOTED(DEFAULT_STK_CLASH_GUARD_SIZE, $DEFAULT_STK_CLASH_GUARD_SIZE,
918 [Define to larger than zero set the default stack clash protector size.])
920 # Enable __cxa_atexit for C++.
921 AC_ARG_ENABLE(__cxa_atexit,
922 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
925 # Enable C extension for decimal float if target supports it.
926 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
928 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
929 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
930 [Define to 1 to enable decimal float extension to C.])
932 # Use default_decimal_float for dependency.
933 enable_decimal_float=$default_decimal_float
935 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
936 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
937 [Define to 1 to specify that we are using the BID decimal floating
938 point format instead of DPD])
940 # Enable C extension for fixed-point arithmetic.
941 AC_ARG_ENABLE(fixed-point,
942 [AS_HELP_STRING([--enable-fixed-point],
943 [enable fixed-point arithmetic extension to C])],
948 enable_fixed_point=yes
952 enable_fixed_point=yes
955 enable_fixed_point=yes
958 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
959 enable_fixed_point=no
963 AC_SUBST(enable_fixed_point)
965 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
966 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
967 [Define to 1 to enable fixed-point arithmetic extension to C.])
970 # Pass with no value to take the default
971 # Pass with a value to specify a thread package
972 AC_ARG_ENABLE(threads,
973 [AS_HELP_STRING([[--enable-threads[=LIB]]],
974 [enable thread usage for target GCC,
975 using LIB thread package])],,
979 [AS_HELP_STRING([--enable-tls],
980 [enable or disable generation of tls code
981 overriding the assembler check for tls support])],
985 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
986 Valid choices are 'yes' and 'no'.]) ;;
990 AC_ARG_ENABLE(vtable-verify,
991 [AS_HELP_STRING([--enable-vtable-verify],
992 [enable vtable verification feature])],,
993 [enable_vtable_verify=no])
994 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
995 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
996 [Define 0/1 if vtable verification feature is enabled.])
998 AC_ARG_ENABLE(analyzer,
999 [AS_HELP_STRING([--disable-analyzer],
1000 [disable -fanalyzer static analyzer])],
1001 if test x$enable_analyzer = xno; then
1007 AC_DEFINE_UNQUOTED(ENABLE_ANALYZER, $analyzer,
1008 [Define 0/1 if static analyzer feature is enabled.])
1010 AC_ARG_ENABLE(objc-gc,
1011 [AS_HELP_STRING([--enable-objc-gc],
1012 [enable the use of Boehm's garbage collector with
1013 the GNU Objective-C runtime])],
1014 if test x$enable_objc_gc = xno; then
1022 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
1023 dwarf2="$with_dwarf2",
1026 AC_ARG_ENABLE(shared,
1027 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
1029 case $enable_shared in
1033 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
1034 for pkg in $enableval; do
1035 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
1042 ], [enable_shared=yes])
1043 AC_SUBST(enable_shared)
1046 [ --disable-gcov don't provide libgcov and related host tools],
1047 [], [case $target in
1056 AC_SUBST(enable_gcov)
1059 [AS_HELP_STRING([--with-specs=SPECS],
1060 [add SPECS to driver command-line processing])],
1061 [CONFIGURE_SPECS=$withval],
1064 AC_SUBST(CONFIGURE_SPECS)
1066 ACX_PKGVERSION([GCC])
1067 ACX_BUGURL([https://gcc.gnu.org/bugs/])
1069 # Allow overriding the default URL for documentation
1070 AC_ARG_WITH(documentation-root-url,
1071 AS_HELP_STRING([--with-documentation-root-url=URL],
1072 [Root for documentation URLs]),
1074 yes) AC_MSG_ERROR([documentation root URL not specified]) ;;
1075 no) AC_MSG_ERROR([documentation root URL not specified]) ;;
1076 */) DOCUMENTATION_ROOT_URL="$withval" ;;
1077 *) AC_MSG_ERROR([documentation root URL does not end with /]) ;;
1079 DOCUMENTATION_ROOT_URL="https://gcc.gnu.org/onlinedocs/"
1081 AC_DEFINE_UNQUOTED(DOCUMENTATION_ROOT_URL,"$DOCUMENTATION_ROOT_URL",
1082 [Define to the root for documentation URLs.])
1084 # Allow overriding the default URL for GCC changes
1085 AC_ARG_WITH(changes-root-url,
1086 AS_HELP_STRING([--with-changes-root-url=URL],
1087 [Root for GCC changes URLs]),
1089 yes) AC_MSG_ERROR([changes root URL not specified]) ;;
1090 no) AC_MSG_ERROR([changes root URL not specified]) ;;
1091 */) CHANGES_ROOT_URL="$withval" ;;
1092 *) AC_MSG_ERROR([changes root URL does not end with /]) ;;
1094 CHANGES_ROOT_URL="https://gcc.gnu.org/"
1096 AC_DEFINE_UNQUOTED(CHANGES_ROOT_URL,"$CHANGES_ROOT_URL",
1097 [Define to the root for URLs about GCC changes.])
1099 # Sanity check enable_languages in case someone does not run the toplevel
1100 # configure # script.
1101 AC_ARG_ENABLE(languages,
1102 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
1103 [case ,${enable_languages}, in
1105 # go safe -- we cannot be much sure without the toplevel
1107 # analysis of which target libs are present and usable
1111 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
1116 enable_languages=c,${enable_languages}
1119 [enable_languages=c])
1121 # If top-level libada has been disabled, then wire in install-gnatlib
1122 # invocation with `make install', so that one can build and install
1123 # the library manually with `make -C gcc all gnatlib gnattools install'.
1124 if test x"$enable_libada" = xno; then
1125 gnat_install_lib=gnat-install-lib
1129 AC_SUBST(gnat_install_lib)
1131 if test x"$enable_as_accelerator_for" != x; then
1132 AC_DEFINE(ACCEL_COMPILER, 1,
1133 [Define if this compiler should be built as the offload target compiler.])
1134 enable_as_accelerator=yes
1137 # In this case we expect offload compiler to be built as native, so we
1138 # need to rename the driver to avoid clashes with host's drivers.
1139 program_transform_name="s&^&${target}-&" ;;
1141 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
1142 program_transform_name=`echo $program_transform_name | sed $sedscript`
1143 accel_dir_suffix=/accel/${target_noncanonical}
1144 real_target_noncanonical=${enable_as_accelerator_for}
1146 AC_SUBST(enable_as_accelerator)
1147 AC_SUBST(real_target_noncanonical)
1148 AC_SUBST(accel_dir_suffix)
1150 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
1151 tgt=`echo $tgt | sed 's/=.*//'`
1155 *-intelmic-* | *-intelmicemul-*)
1156 omp_device_property=omp-device-properties-i386
1157 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/i386/t-omp-device"
1160 omp_device_property=omp-device-properties-gcn
1161 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/gcn/t-omp-device"
1164 omp_device_property=omp-device-properties-nvptx
1165 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/nvptx/t-omp-device"
1168 AC_MSG_ERROR([unknown offload target specified])
1171 omp_device_properties="${omp_device_properties} ${tgt}=${omp_device_property}"
1172 omp_device_property_deps="${omp_device_property_deps} ${omp_device_property}"
1174 if test x"$offload_targets" = x; then
1175 offload_targets=$tgt
1177 offload_targets="$offload_targets,$tgt"
1180 AC_SUBST(omp_device_properties)
1181 AC_SUBST(omp_device_property_deps)
1183 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
1184 [Define to offload targets, separated by commas.])
1185 if test x"$enable_offloading" != x; then
1186 AC_DEFINE(ENABLE_OFFLOADING, 1,
1187 [Define this to enable support for offloading.])
1189 AC_DEFINE(ENABLE_OFFLOADING, 0,
1190 [Define this to enable support for offloading.])
1193 if test "x$enable_offload_defaulted" = xyes; then
1194 AC_DEFINE(OFFLOAD_DEFAULTED, 1,
1195 [Define to 1 to if -foffload is defaulted])
1198 AC_ARG_WITH(multilib-list,
1199 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, ARM, AVR, OR1K, RISC-V, SH and x86-64 only)])],
1201 with_multilib_list=default)
1203 AC_ARG_WITH(multilib-generator,
1204 [AS_HELP_STRING([--with-multilib-generator], [Multi-libs configuration string (RISC-V only)])],
1206 with_multilib_generator=default)
1208 # -------------------------
1209 # Checks for other programs
1210 # -------------------------
1214 # Find some useful tools
1216 # We need awk to create options.cc and options.h.
1217 # Bail out if it's missing.
1219 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1226 AC_SUBST(ranlib_flags)
1230 # See if cmp has --ignore-initial.
1231 gcc_AC_PROG_CMP_IGNORE_INITIAL
1233 # See if we have the mktemp command.
1234 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1236 # See if makeinfo has been installed and is modern enough
1237 # that we can use it.
1238 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1239 [GNU texinfo.* \([0-9][0-9.]*\)],
1240 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1241 if test $gcc_cv_prog_makeinfo_modern = no; then
1243 *** Makeinfo is missing or too old.
1244 *** Info documentation will not be built.])
1249 AC_SUBST(BUILD_INFO)
1251 # Is pod2man recent enough to regenerate manpages?
1252 AC_MSG_CHECKING([for recent Pod::Man])
1253 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1255 GENERATED_MANPAGES=generated-manpages
1260 AC_SUBST(GENERATED_MANPAGES)
1262 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1265 dnl Don't use AC_PROG_LEX; we insist on flex.
1266 dnl LEXLIB is not useful in gcc.
1267 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1270 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1272 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1273 # check for build == host before using them.
1276 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1277 && test -d ../binutils ; then
1278 NM='${objdir}/../binutils/nm-new'
1280 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1284 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1285 && test -d ../binutils ; then
1286 AR='${objdir}/../binutils/ar'
1288 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1291 # The jit documentation looks better if built with sphinx, but can be
1292 # built with texinfo if sphinx is not available.
1293 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1294 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1296 # --------------------
1297 # Checks for C headers
1298 # --------------------
1300 # Need to reject headers which give warnings, so that the -Werror bootstrap
1301 # works later. *sigh* This needs to come before all header checks.
1308 AC_HEADER_TIOCGWINSZ
1309 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1310 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1311 sys/resource.h sys/param.h sys/times.h sys/stat.h sys/locking.h \
1312 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1314 # Check for thread headers.
1315 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1316 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1318 # These tests can't be done till we know if we have limits.h.
1322 # ----------------------
1323 # Checks for C++ headers
1324 # ----------------------
1326 dnl Autoconf will give an error in the configure script if there is no
1327 dnl C++ preprocessor. Hack to prevent that.
1328 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1330 m4_popdef([AC_MSG_ERROR])[]dnl
1332 AC_CHECK_HEADERS(unordered_map)
1333 AC_CHECK_HEADERS(tr1/unordered_map)
1334 AC_CHECK_HEADERS(ext/hash_map)
1337 # Dependency checking.
1341 AC_CONFIG_COMMANDS([gccdepdir],[
1342 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1343 for lang in $subdirs c-family common analyzer rtl-ssa
1345 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1346 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1348 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1355 # These libraries may be used by collect2.
1356 # We may need a special search path to get them linked.
1357 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1359 for libs in '' -lld -lmld \
1360 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1361 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1364 AC_TRY_LINK_FUNC(ldopen,
1365 [gcc_cv_collect2_libs="$libs"; break])
1368 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1369 case $gcc_cv_collect2_libs in
1371 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1373 AC_SUBST(COLLECT2_LIBS)
1375 # When building Ada code on Alpha, we need exc_resume which is usually in
1376 # -lexc. So test for it.
1379 AC_SEARCH_LIBS(exc_resume, exc)
1382 AC_SUBST(GNAT_LIBEXC)
1384 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1387 AC_SEARCH_LIBS(kstat_open, kstat)
1388 EXTRA_GCC_LIBS="$LIBS"
1390 AC_SUBST(EXTRA_GCC_LIBS)
1392 # Solaris needs libsocket and libnsl for socket functions before 11.4.
1393 # C++ needs those for libcody.
1401 # Some systems put ldexp and frexp in libm instead of libc; assume
1402 # they're both in the same place. jcf-dump needs them.
1405 AC_SEARCH_LIBS(ldexp, m)
1410 # Some systems need dlopen
1413 AC_SEARCH_LIBS(dlopen, dl)
1418 # Use <inttypes.h> only if it exists,
1419 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1421 AC_MSG_CHECKING(for inttypes.h)
1422 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1423 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1424 [[#define __STDC_FORMAT_MACROS
1425 #include <sys/types.h>
1426 #include <inttypes.h>]],
1431 [gcc_cv_header_inttypes_h=yes],
1432 [gcc_cv_header_inttypes_h=no])])
1433 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1434 if test $gcc_cv_header_inttypes_h = yes; then
1435 AC_DEFINE(HAVE_INTTYPES_H, 1,
1436 [Define if you have a working <inttypes.h> header file.])
1439 # Look for the ZSTD package.
1442 AC_SUBST(ZSTD_INCLUDE)
1446 AC_SUBST(ZSTD_CPPFLAGS)
1447 AC_SUBST(ZSTD_LDFLAGS)
1449 [AS_HELP_STRING([--with-zstd=PATH],
1450 [specify prefix directory for installed zstd library.
1451 Equivalent to --with-zstd-include=PATH/include
1452 plus --with-zstd-lib=PATH/lib])])
1453 AC_ARG_WITH(zstd-include,
1454 [AS_HELP_STRING([--with-zstd-include=PATH],
1455 [specify directory for installed zstd include files])])
1456 AC_ARG_WITH(zstd-lib,
1457 [AS_HELP_STRING([--with-zstd-lib=PATH],
1458 [specify directory for the installed zstd library])])
1459 case "x$with_zstd" in
1465 *) ZSTD_INCLUDE=$with_zstd/include
1466 ZSTD_LIB=$with_zstd/lib
1470 if test "x$with_zstd" != xno; then
1471 if test "x$with_zstd_include" != x; then
1472 ZSTD_INCLUDE=$with_zstd_include
1474 if test "x$with_zstd_lib" != x; then
1475 ZSTD_LIB=$with_zstd_lib
1477 if test "x$ZSTD_INCLUDE" != x \
1478 && test "x$ZSTD_INCLUDE" != xno; then
1479 ZSTD_CPPFLAGS=-I$ZSTD_INCLUDE
1481 if test "x$ZSTD_LIB" != x \
1482 && test "x$ZSTD_LIB" != xno; then
1483 ZSTD_LDFLAGS=-L$ZSTD_LIB
1486 CXXFLAGS="$CXXFLAGS $ZSTD_CPPFLAGS"
1487 LDFLAGS="$LDFLAGS $ZSTD_LDFLAGS"
1489 AC_MSG_CHECKING(for zstd.h)
1490 AC_CACHE_VAL(gcc_cv_header_zstd_h,
1491 # We require version 1.3.0 or later. This is the first version that has
1492 # ZSTD_getFrameContentSize.
1493 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1495 #if ZSTD_VERSION_NUMBER < 10300
1496 #error "need zstd 1.3.0 or better"
1498 [gcc_cv_header_zstd_h=yes],
1499 [gcc_cv_header_zstd_h=no])])
1500 AC_MSG_RESULT($gcc_cv_header_zstd_h)
1501 if test $gcc_cv_header_zstd_h = yes; then
1502 AC_DEFINE(HAVE_ZSTD_H, 1,
1503 [Define if you have a working <zstd.h> header file.])
1504 elif test "x$with_zstd" != x; then
1505 as_fn_error $? "Unable to find zstd.h. See config.log for details." "$LINENO" 5
1508 # LTO can use zstd compression algorithm
1511 AC_SEARCH_LIBS(ZSTD_compress, zstd)
1517 dnl Disabled until we have a complete test for buggy enum bitfields.
1518 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1520 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1521 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1522 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1523 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1524 putchar_unlocked putc_unlocked)
1525 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1526 popen sysconf strsignal getrusage nl_langinfo \
1527 gettimeofday mbstowcs wcswidth mmap posix_fallocate setlocale \
1528 gcc_UNLOCKED_FUNCS madvise mallinfo mallinfo2 fstatat)
1530 if test x$ac_cv_func_mbstowcs = xyes; then
1531 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1532 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1538 [gcc_cv_func_mbstowcs_works=yes],
1539 [gcc_cv_func_mbstowcs_works=no],
1540 [gcc_cv_func_mbstowcs_works=yes])])
1541 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1542 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1543 [Define this macro if mbstowcs does not crash when its
1544 first argument is NULL.])
1548 AC_CHECK_TYPE(ssize_t, int)
1549 AC_CHECK_TYPE(caddr_t, char *)
1550 AC_CHECK_TYPE(sighander_t,
1551 AC_DEFINE(HAVE_SIGHANDLER_T, 1,
1552 [Define if <sys/signal.h> defines sighandler_t]),
1555 GCC_AC_FUNC_MMAP_BLACKLIST
1559 # Under VMS, vfork works very differently than on Unix. The standard test
1560 # won't work, and it isn't easily adaptable. It makes more sense to
1562 ac_cv_func_vfork_works=yes
1569 # Until we have in-tree GNU iconv:
1571 if test -f "$LTLIBICONV"; then
1572 LIBICONV_DEP=$LTLIBICONV
1574 AC_SUBST(LIBICONV_DEP)
1580 # We will need to find libiberty.h and ansidecl.h
1581 saved_CFLAGS="$CFLAGS"
1582 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1583 saved_CXXFLAGS="$CXXFLAGS"
1584 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1586 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1587 # normal autoconf function for these. But force definition of
1588 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1589 # basename handling in libiberty.h.
1590 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1591 #undef HAVE_DECL_BASENAME
1592 #define HAVE_DECL_BASENAME 1
1593 #include "ansidecl.h"
1594 #include "system.h"])
1596 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1597 madvise stpcpy strnlen strsignal strverscmp \
1598 strtol strtoul strtoll strtoull setenv unsetenv \
1599 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1600 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1601 #include "ansidecl.h"
1602 #include "system.h"])
1604 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1605 #include "ansidecl.h"
1607 #ifdef HAVE_SYS_RESOURCE_H
1608 #include <sys/resource.h>
1612 gcc_AC_CHECK_DECLS(mallinfo mallinfo2, , ,[
1613 #include "ansidecl.h"
1615 #ifdef HAVE_MALLOC_H
1620 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1621 #include "ansidecl.h"
1623 #ifdef HAVE_SYS_RESOURCE_H
1624 #include <sys/resource.h>
1626 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1627 [Define to `long' if <sys/resource.h> doesn't define.])])
1629 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1630 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1631 # in collect2.cc, <fcntl.h> isn't visible, but the configure test below needs
1632 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1633 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1634 #include "ansidecl.h"
1643 gcc_AC_CHECK_DECLS(times, , ,[
1644 #include "ansidecl.h"
1646 #ifdef HAVE_SYS_TIMES_H
1647 #include <sys/times.h>
1651 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1652 #include "ansidecl.h"
1657 # More time-related stuff.
1658 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1659 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1660 #include "ansidecl.h"
1662 #ifdef HAVE_SYS_TIMES_H
1663 #include <sys/times.h>
1665 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1666 if test $ac_cv_struct_tms = yes; then
1667 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1668 [Define if <sys/times.h> defines struct tms.])
1671 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1672 # revisit after autoconf 2.50.
1673 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1674 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1675 #include "ansidecl.h"
1677 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1678 if test $gcc_cv_type_clock_t = yes; then
1679 AC_DEFINE(HAVE_CLOCK_T, 1,
1680 [Define if <time.h> defines clock_t.])
1683 # Check if F_SETLKW is supported by fcntl.
1684 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1685 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1686 #include <fcntl.h>]], [[
1692 return fcntl (1, F_SETLKW, &fl);]])],
1693 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1694 if test $ac_cv_f_setlkw = yes; then
1695 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1696 [Define if F_SETLKW supported by fcntl.])
1699 # Check if O_CLOEXEC is defined by fcntl
1700 AC_CACHE_CHECK(for O_CLOEXEC, ac_cv_o_cloexec, [
1701 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1702 #include <fcntl.h>]], [[
1703 return open ("/dev/null", O_RDONLY | O_CLOEXEC);]])],
1704 [ac_cv_o_cloexec=yes],[ac_cv_o_cloexec=no])])
1705 if test $ac_cv_o_cloexec = yes; then
1706 AC_DEFINE(HOST_HAS_O_CLOEXEC, 1,
1707 [Define if O_CLOEXEC supported by fcntl.])
1710 # C++ Modules would like some networking features to provide the mapping
1711 # server. You can still use modules without them though.
1712 # The following network-related checks could probably do with some
1713 # Windows and other non-linux defenses and checking.
1715 # Local socket connectivity wants AF_UNIX networking
1716 # Check for AF_UNIX networking
1717 AC_CACHE_CHECK(for AF_UNIX, ac_cv_af_unix, [
1718 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1719 #include <sys/types.h>
1720 #include <sys/socket.h>
1722 #include <netinet/in.h>]],[[
1724 un.sun_family = AF_UNSPEC;
1725 int fd = socket (AF_UNIX, SOCK_STREAM, 0);
1726 connect (fd, (sockaddr *)&un, sizeof (un));]])],
1727 [ac_cv_af_unix=yes],
1728 [ac_cv_af_unix=no])])
1729 if test $ac_cv_af_unix = yes; then
1730 AC_DEFINE(HAVE_AF_UNIX, 1,
1731 [Define if AF_UNIX supported.])
1734 # Remote socket connectivity wants AF_INET6 networking
1735 # Check for AF_INET6 networking
1736 AC_CACHE_CHECK(for AF_INET6, ac_cv_af_inet6, [
1737 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1738 #include <sys/types.h>
1739 #include <sys/socket.h>
1740 #include <netinet/in.h>
1741 #include <netdb.h>]],[[
1743 in6.sin6_family = AF_UNSPEC;
1744 struct addrinfo *addrs = 0;
1745 struct addrinfo hints;
1747 hints.ai_family = AF_INET6;
1748 hints.ai_socktype = SOCK_STREAM;
1749 hints.ai_protocol = 0;
1750 hints.ai_canonname = 0;
1753 int e = getaddrinfo ("localhost", 0, &hints, &addrs);
1754 const char *str = gai_strerror (e);
1755 freeaddrinfo (addrs);
1756 int fd = socket (AF_INET6, SOCK_STREAM, 0);
1757 connect (fd, (sockaddr *)&in6, sizeof (in6));]])],
1758 [ac_cv_af_inet6=yes],
1759 [ac_cv_af_inet6=no])])
1760 if test $ac_cv_af_inet6 = yes; then
1761 AC_DEFINE(HAVE_AF_INET6, 1,
1762 [Define if AF_INET6 supported.])
1765 # Check if _LK_LOCK is supported by _locking
1766 AC_CACHE_CHECK(for _LK_LOCK, ac_cv_lk_lock, [
1767 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1769 #include <sys/locking.h>]], [[
1771 return _locking (fd, _LK_LOCK, 0);]])],
1772 [ac_cv_lk_lock=yes],[ac_cv_lk_lock=no])])
1773 if test $ac_cv_lk_lock = yes; then
1774 AC_DEFINE(HOST_HAS_LK_LOCK, 1,
1775 [Define if _LK_LOC supported by _locking.])
1778 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1779 CFLAGS="$saved_CFLAGS"
1780 CXXFLAGS="$saved_CXXFLAGS"
1782 # mkdir takes a single argument on some systems.
1783 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1791 # With Setjmp/Longjmp based exception handling.
1792 AC_ARG_ENABLE(sjlj-exceptions,
1793 [AS_HELP_STRING([--enable-sjlj-exceptions],
1794 [arrange to use setjmp/longjmp exception handling])],
1797 if test $enableval != yes; then
1798 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1803 force_sjlj_exceptions=yes],
1806 force_sjlj_exceptions=yes
1810 force_sjlj_exceptions=yes
1814 force_sjlj_exceptions=no
1817 if test $force_sjlj_exceptions = yes; then
1818 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1819 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1820 [Define 0/1 to force the choice for exception handling model.])
1823 # --------------------------------------------------------
1824 # Build, host, and target specific configuration fragments
1825 # --------------------------------------------------------
1827 # Collect build-machine-specific information.
1828 . ${srcdir}/config.build || exit 1
1830 # Collect host-machine-specific information.
1831 . ${srcdir}/config.host || exit 1
1835 # Collect target-machine-specific information.
1836 . ${srcdir}/config.gcc || exit 1
1838 extra_objs="${host_extra_objs} ${extra_objs}"
1839 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1841 # Default the target-machine variables that were not explicitly set.
1842 if test x"$tm_file" = x
1843 then tm_file=$cpu_type/$cpu_type.h; fi
1845 if test x"$extra_headers" = x
1846 then extra_headers=; fi
1848 if test x$md_file = x
1849 then md_file=$cpu_type/$cpu_type.md; fi
1851 if test x$out_file = x
1852 then out_file=$cpu_type/$cpu_type.cc; fi
1854 if test x"$tmake_file" = x
1855 then tmake_file=$cpu_type/t-$cpu_type
1858 # Support --enable-initfini-array.
1859 if test x$enable_initfini_array != xno; then
1860 tm_file="${tm_file} initfini-array.h"
1863 if test x"$dwarf2" = xyes
1864 then tm_file="$tm_file tm-dwarf2.h"
1867 # Say what files are being used for the output code and MD file.
1868 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1869 echo "Using \`$srcdir/config/$md_file' as machine description file."
1871 # If any of the xm_file variables contain nonexistent files, warn
1872 # about them and drop them.
1875 for x in $build_xm_file; do
1876 if test -f $srcdir/config/$x
1878 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1884 for x in $host_xm_file; do
1885 if test -f $srcdir/config/$x
1887 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1893 for x in $xm_file; do
1894 if test -f $srcdir/config/$x
1896 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1902 for f in $tm_file; do
1905 if test $count = ax; then
1906 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1908 echo "Using the following target machine macro files:"
1909 for f in $tm_file; do
1910 echo " $srcdir/config/$f"
1914 if test x$use_long_long_for_widest_fast_int = xyes; then
1915 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1916 [Define to 1 if the 'long long' type is wider than 'long' but still
1917 efficiently supported by the host hardware.])
1920 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1921 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1923 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1924 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1927 for f in $host_xm_file; do
1930 if test $count = a; then
1932 elif test $count = ax; then
1933 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1935 echo "Using the following host machine macro files:"
1936 for f in $host_xm_file; do
1937 echo " $srcdir/config/$f"
1940 echo "Using ${out_host_hook_obj} for host machine hooks."
1942 if test "$host_xm_file" != "$build_xm_file"; then
1944 for f in $build_xm_file; do
1947 if test $count = a; then
1949 elif test $count = ax; then
1950 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1952 echo "Using the following build machine macro files:"
1953 for f in $build_xm_file; do
1954 echo " $srcdir/config/$f"
1959 if test -n "$configured_native_system_header_dir"; then
1960 native_system_header_dir=$configured_native_system_header_dir
1962 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1963 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1967 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1968 gcc_cv_mcontext_underscores,
1969 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1970 #include <sys/cdefs.h>
1971 #include <sys/signal.h>
1972 #include <ucontext.h>
1973 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1975 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1976 if test $gcc_cv_mcontext_underscores = yes; then
1977 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1978 [mcontext_t fields start with __])
1987 # Check if a valid thread package
1988 case ${enable_threads} in
1991 target_thread_file='single'
1995 target_thread_file='single'
1997 aix | dce | lynx | mipssde | posix | rtems | \
1998 single | tpf | vxworks | win32)
1999 target_thread_file=${enable_threads}
2002 echo "${enable_threads} is an unknown thread package" 1>&2
2007 if test x${thread_file} = x; then
2008 # No thread file set by target-specific clauses in config.gcc,
2009 # so use file chosen by default logic above
2010 thread_file=${target_thread_file}
2018 if test x$enable___cxa_atexit = xyes || \
2019 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
2020 if test x$host = x$target; then
2022 # mingw32 doesn't have __cxa_atexit but uses atexit registration
2023 # keyed to flag_use_cxa_atexit
2031 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
2032 [echo "__cxa_atexit can't be enabled on this target"])
2036 # We can't check for __cxa_atexit when building a cross, so assume
2040 if test x$use_cxa_atexit = xyes; then
2041 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
2042 [Define if you want to use __cxa_atexit, rather than atexit, to
2043 register C++ destructors for local statics and global objects.
2044 This is essential for fully standards-compliant handling of
2045 destructors, but requires __cxa_atexit in libc.])
2049 # Look for a file containing extra machine modes.
2050 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
2051 extra_modes_file='$(srcdir)'/config/${extra_modes}
2052 AC_SUBST(extra_modes_file)
2053 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
2054 [Define to the name of a file containing a list of extra machine modes
2055 for this architecture.])
2058 # Convert extra_options into a form suitable for Makefile use.
2061 for f in $extra_options; do
2062 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
2063 all_opt_files="$all_opt_files $srcdir/config/$f"
2065 AC_SUBST(extra_opt_files)
2067 # auto-host.h is the file containing items generated by autoconf and is
2068 # the first file included by config.h.
2069 # If host=build, it is correct to have bconfig include auto-host.h
2070 # as well. If host!=build, we are in error and need to do more
2071 # work to find out the build config parameters.
2072 if test x$host = x$build
2074 build_auto=auto-host.h
2075 HAVE_AUTO_BUILD='# '
2077 # We create a subdir, then run autoconf in the subdir.
2078 # To prevent recursion we set host and build for the new
2079 # invocation of configure to the build for this invocation
2086 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
2087 *) realsrcdir=../${srcdir};;
2089 # Clearing GMPINC is necessary to prevent host headers being
2090 # used by the build compiler. Defining GENERATOR_FILE stops
2091 # system.h from including gmp.h.
2092 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
2093 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
2094 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
2095 GMPINC="" CPPFLAGS="${CPPFLAGS_FOR_BUILD} -DGENERATOR_FILE" \
2096 ${realsrcdir}/configure \
2097 --enable-languages=${enable_languages-all} \
2098 ${enable_obsolete+--enable-obsolete="$enable_obsolete"} \
2099 ${enable_option_checking+--enable-option-checking="$enable_option_checking"} \
2100 --target=$target_alias --host=$build_alias \
2101 --build=$build_alias || exit # retaining $tempdir
2103 # We just finished tests for the build machine, so rename
2104 # the file auto-build.h in the gcc directory.
2105 mv auto-host.h ../auto-build.h
2108 build_auto=auto-build.h
2111 AC_SUBST(build_subdir)
2112 AC_SUBST(HAVE_AUTO_BUILD)
2114 tm_file="${tm_file} defaults.h"
2115 tm_p_file="${tm_p_file} tm-preds.h"
2116 tm_d_file="${tm_d_file} defaults.h"
2117 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
2118 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
2119 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
2120 # put this back in temporarily.
2121 xm_file="auto-host.h ansidecl.h ${xm_file}"
2128 # Compile in configure arguments.
2129 if test -f configargs.h ; then
2130 # Being re-configured.
2131 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
2132 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
2133 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
2134 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
2137 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
2140 # Double all backslashes and backslash all quotes to turn
2141 # gcc_config_arguments into a C string.
2142 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
2143 $gcc_config_arguments
2145 gcc_config_arguments_str=`cat conftest.out`
2148 cat > configargs.h <<EOF
2149 /* Generated automatically. */
2150 static const char configuration_arguments[] = "$gcc_config_arguments_str";
2151 static const char thread_model[] = "$thread_file";
2153 static const struct {
2154 const char *name, *value;
2155 } configure_default_options[] = $configure_default_options;
2160 gcc_BASEVER=`cat $srcdir/BASE-VER`
2161 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
2162 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
2163 if test -f $srcdir/REVISION ; then
2164 gcc_REVISION=`cat $srcdir/REVISION`
2168 cat > plugin-version.h <<EOF
2169 #include "configargs.h"
2171 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
2172 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
2173 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
2174 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
2176 static char basever[] = "$gcc_BASEVER";
2177 static char datestamp[] = "$gcc_DATESTAMP";
2178 static char devphase[] = "$gcc_DEVPHASE";
2179 static char revision[] = "$gcc_REVISION";
2181 /* FIXME plugins: We should make the version information more precise.
2182 One way to do is to add a checksum. */
2184 static struct plugin_gcc_version gcc_version = {basever, datestamp,
2186 configuration_arguments};
2190 # Determine what GCC version number to use in filesystem paths.
2193 # Internationalization
2194 ZW_GNU_GETTEXT_SISTER_DIR
2196 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
2197 # -liconv on the link line twice.
2198 case "$LIBINTL" in *$LIBICONV*)
2202 AC_ARG_ENABLE(secureplt,
2203 [AS_HELP_STRING([--enable-secureplt],
2204 [enable -msecure-plt by default for PowerPC])],
2207 AC_ARG_ENABLE(mingw-wildcard,
2208 [AS_HELP_STRING([--enable-mingw-wildcard],
2209 [Set whether to expand wildcard on command-line.
2210 Default to platform configuration])],
2211 [],[enable_mingw_wildcard=platform])
2212 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
2213 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
2214 $(test x"$enable_mingw_wildcard" = xno; echo $?),
2215 [Value to set mingw's _dowildcard to.])])
2217 AC_ARG_ENABLE(large-address-aware,
2218 [AS_HELP_STRING([--enable-large-address-aware],
2219 [Link mingw executables with --large-address-aware])])
2220 AS_IF([test x"$enable_large_address_aware" = xyes],
2221 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
2222 [Define if we should link mingw executables with --large-address-aware])])
2224 AC_ARG_ENABLE(leading-mingw64-underscores,
2225 AS_HELP_STRING([--enable-leading-mingw64-underscores],
2226 [enable leading underscores on 64 bit mingw targets]),
2228 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
2229 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
2230 [Define if we should use leading underscore on 64 bit mingw targets])])
2233 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
2236 AC_ARG_ENABLE(frame-pointer,
2237 [AS_HELP_STRING([--enable-frame-pointer],
2238 [enable -fno-omit-frame-pointer by default for x86])], [],
2241 linux* | gnu* | darwin[[8912]]* | cygwin* | mingw*)
2242 # Enable -fomit-frame-pointer by default for these systems with DWARF2.
2243 enable_frame_pointer=no
2246 enable_frame_pointer=yes
2252 i[[34567]]86-*-* | x86_64-*-*)
2253 if test "x$enable_cld" = xyes; then
2254 tm_defines="${tm_defines} USE_IX86_CLD=1"
2256 if test "x$enable_frame_pointer" = xyes; then
2257 tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1"
2262 # Windows32 Registry support for specifying GCC installation paths.
2263 AC_ARG_ENABLE(win32-registry,
2264 [AS_HELP_STRING([--disable-win32-registry],
2265 [disable lookup of installation paths in the
2266 Registry on Windows hosts])
2267 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
2268 AS_HELP_STRING([--enable-win32-registry=KEY],
2269 [use KEY instead of GCC version as the last portion
2270 of the registry key])],,)
2273 win32 | pe | cygwin* | mingw32*)
2274 if test "x$enable_win32_registry" != xno; then
2275 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
2278 if test "x$enable_win32_registry" != xno; then
2279 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
2280 [Define to 1 if installation paths should be looked up in the Windows
2281 Registry. Ignored on non-Windows hosts.])
2283 if test "x$enable_win32_registry" != xyes \
2284 && test "x$enable_win32_registry" != x; then
2285 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
2286 [Define to be the last component of the Windows registry key under which
2287 to look for installation paths. The full key used will be
2288 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
2289 The default is the GCC version number.])
2295 # Get an absolute path to the GCC top-level source directory
2296 holddir=`${PWDCMD-pwd}`
2298 topdir=`${PWDCMD-pwd}`
2301 # Conditionalize the makefile for this host machine.
2303 for f in ${host_xmake_file}
2305 if test -f ${srcdir}/config/$f
2307 xmake_file="${xmake_file} \$(srcdir)/config/$f"
2311 # Conditionalize the makefile for this target machine.
2313 for f in ${tmake_file}
2315 if test -f ${srcdir}/config/$f
2317 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
2320 tmake_file="${tmake_file_}${omp_device_property_tmake_file}"
2322 out_object_file=`basename $out_file .cc`.o
2323 common_out_object_file=`basename $common_out_file .cc`.o
2325 tm_file_list="options.h"
2326 tm_include_list="options.h insn-constants.h"
2327 for f in $tm_file; do
2330 f=`echo $f | sed 's/^..//'`
2331 tm_file_list="${tm_file_list} $f"
2332 tm_include_list="${tm_include_list} $f"
2335 tm_file_list="${tm_file_list} \$(srcdir)/$f"
2336 tm_include_list="${tm_include_list} $f"
2339 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
2340 tm_include_list="${tm_include_list} config/$f"
2347 for f in $tm_p_file; do
2350 tm_p_file_list="${tm_p_file_list} $f"
2351 tm_p_include_list="${tm_p_include_list} $f"
2354 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
2355 tm_p_include_list="${tm_p_include_list} config/$f"
2360 tm_d_include_list="options.h insn-constants.h"
2361 for f in $tm_d_file; do
2364 tm_d_file_list="${tm_d_file_list} \$(srcdir)/$f"
2365 tm_d_include_list="${tm_d_include_list} $f"
2368 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
2369 tm_d_include_list="${tm_d_include_list} config/$f"
2376 for f in $xm_file; do
2379 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2380 xm_include_list="${xm_include_list} $f"
2383 xm_file_list="${xm_file_list} $f"
2384 xm_include_list="${xm_include_list} $f"
2387 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2388 xm_include_list="${xm_include_list} config/$f"
2394 host_xm_include_list=
2395 for f in $host_xm_file; do
2398 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2399 host_xm_include_list="${host_xm_include_list} $f"
2402 host_xm_file_list="${host_xm_file_list} $f"
2403 host_xm_include_list="${host_xm_include_list} $f"
2406 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2407 host_xm_include_list="${host_xm_include_list} config/$f"
2413 for f in $build_xm_file; do
2416 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2417 build_xm_include_list="${build_xm_include_list} $f"
2419 auto-build.h | auto-host.h )
2420 build_xm_file_list="${build_xm_file_list} $f"
2421 build_xm_include_list="${build_xm_include_list} $f"
2424 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2425 build_xm_include_list="${build_xm_include_list} config/$f"
2430 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2431 # cross-compiler which does not use the native headers and libraries.
2432 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2433 CROSS= AC_SUBST(CROSS)
2434 ALL=all.internal AC_SUBST(ALL)
2435 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2436 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2438 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2439 test x$build != x$host || test "x$with_build_sysroot" != x; then
2440 if test "x$with_build_sysroot" != x; then
2441 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2443 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2446 if test x$host != x$target
2448 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2450 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2451 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2452 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2455 if test "x$with_build_sysroot" != "x"; then
2456 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2457 elif test "x$with_sysroot" = x; then
2458 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2459 elif test "x$with_sysroot" = xyes; then
2460 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2462 target_header_dir="${with_sysroot}${native_system_header_dir}"
2465 target_header_dir=${native_system_header_dir}
2468 # If this is a cross-compiler that does not
2469 # have its own set of headers then define
2472 # If this is using newlib, without having the headers available now,
2473 # then define inhibit_libc in LIBGCC2_CFLAGS.
2474 # This prevents libgcc2 from containing any code which requires libc
2476 : ${inhibit_libc=false}
2477 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2478 test x$with_newlib = xyes ; } &&
2479 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2482 AC_SUBST(inhibit_libc)
2484 # When building gcc with a cross-compiler, we need to adjust things so
2485 # that the generator programs are still built with the native compiler.
2486 # Also, we cannot run fixincludes.
2488 # These are the normal (build=host) settings:
2489 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2490 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2491 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2492 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2493 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2494 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2496 # And these apply if build != host, or we are generating coverage data
2497 if test x$build != x$host || test "x$coverage_flags" != x
2499 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CFLAGS_FOR_BUILD)'
2500 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CXXFLAGS_FOR_BUILD)'
2501 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2504 # Expand extra_headers to include complete path.
2505 # This substitutes for lots of t-* files.
2507 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2508 for file in ${extra_headers} ; do
2509 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2512 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2513 if test x"$use_gcc_tgmath" = xyes
2514 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2517 # Define collect2 in Makefile.
2518 case $host_can_use_collect2 in
2520 *) collect2='collect2$(exeext)' ;;
2522 AC_SUBST([collect2])
2524 # Add a definition of USE_COLLECT2 if system wants one.
2525 case $use_collect2 in
2526 no) use_collect2= ;;
2529 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2530 xm_defines="${xm_defines} USE_COLLECT2"
2531 case $host_can_use_collect2 in
2533 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2539 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2540 [Define to the name of the LTO plugin DSO that must be
2541 passed to the linker's -plugin=LIB option.])
2543 # ---------------------------
2544 # Assembler & linker features
2545 # ---------------------------
2547 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2548 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2549 # However when ld-new is first executed from the build tree, libtool will
2550 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2551 # to the build tree. While doing this we need to use the previous-stage
2552 # linker, or we have an infinite loop. The presence of a shell script as
2553 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2554 # the gcc/collect-ld script. So we need to know how libtool works, or
2555 # exec-tool will fail.
2557 m4_defun([_LT_CONFIG_COMMANDS], [])
2560 AC_SUBST(enable_fast_install)
2562 # Identify the assembler which will work hand-in-glove with the newly
2563 # built GCC, so that we can examine its features. This is the assembler
2564 # which will be driven by the driver program.
2566 # If build != host, and we aren't building gas in-tree, we identify a
2567 # build->target assembler and hope that it will have the same features
2568 # as the host->target assembler we'll be using.
2569 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2571 m4_pattern_allow([AS_FOR_TARGET])dnl
2572 AS_VAR_SET_IF(gcc_cv_as,, [
2573 if test -x "$DEFAULT_ASSEMBLER"; then
2574 gcc_cv_as="$DEFAULT_ASSEMBLER"
2575 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2576 && test -f ../gas/Makefile \
2577 && test x$build = x$host; then
2578 gcc_cv_as=../gas/as-new$build_exeext
2579 elif test -x as$build_exeext; then
2580 # Build using assembler in the current directory.
2581 gcc_cv_as=./as$build_exeext
2582 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2583 gcc_cv_as="$AS_FOR_TARGET"
2585 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2588 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2589 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2590 case "$ORIGINAL_AS_FOR_TARGET" in
2591 ./as | ./as$build_exeext) ;;
2592 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2597 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2598 [case "${enableval}" in
2604 install_gold_as_default=no
2606 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2607 [case "${enableval}" in
2609 install_gold_as_default=yes
2612 if test x${default_ld} != x; then
2613 install_gold_as_default=yes
2619 AC_MSG_ERROR([invalid --enable-gold argument])
2623 # Identify the linker which will work hand-in-glove with the newly
2624 # built GCC, so that we can examine its features. This is the linker
2625 # which will be driven by the driver program.
2627 # If build != host, and we aren't building gas in-tree, we identify a
2628 # build->target linker and hope that it will have the same features
2629 # as the host->target linker we'll be using.
2630 gcc_cv_gld_major_version=
2631 gcc_cv_gld_minor_version=
2632 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2633 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2634 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2636 AS_VAR_SET_IF(gcc_cv_ld,, [
2637 if test -x "$DEFAULT_LINKER"; then
2638 gcc_cv_ld="$DEFAULT_LINKER"
2639 elif test $install_gold_as_default = yes \
2640 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2641 && test -f ../gold/Makefile \
2642 && test x$build = x$host; then
2643 gcc_cv_ld=../gold/ld-new$build_exeext
2644 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2645 && test -f ../ld/Makefile \
2646 && test x$build = x$host; then
2647 gcc_cv_ld=../ld/ld-new$build_exeext
2648 elif test -x collect-ld$build_exeext; then
2649 # Build using linker in the current directory.
2650 gcc_cv_ld=./collect-ld$build_exeext
2651 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2652 gcc_cv_ld="$LD_FOR_TARGET"
2654 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2657 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2658 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2659 # if the PLUGIN_LD is set ld-new, just have it as ld
2660 # as that is the installed named.
2661 if test x$PLUGIN_LD_SUFFIX = xld-new \
2662 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2665 AC_ARG_WITH(plugin-ld,
2666 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2667 [if test x"$withval" != x; then
2668 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2669 PLUGIN_LD_SUFFIX="$withval"
2671 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2672 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2674 # Check to see if we are using gold instead of ld
2675 AC_MSG_CHECKING(whether we are using gold)
2677 if test x$gcc_cv_ld != x; then
2678 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2679 | grep "GNU gold" > /dev/null; then
2683 AC_MSG_RESULT($ld_is_gold)
2685 # Check to see if we are using mold instead of ld
2686 AC_MSG_CHECKING(whether we are using mold)
2688 if test x$gcc_cv_ld != x; then
2689 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2690 | grep "mold" > /dev/null; then
2694 AC_MSG_RESULT($ld_is_mold)
2697 AC_MSG_CHECKING(gold linker with split stack support as non default)
2698 # Check to see if default ld is not gold, but gold is
2699 # available and has support for split stack. If gcc was configured
2700 # with gold then no checking is done.
2702 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2704 # For platforms other than powerpc64*, enable as appropriate.
2707 ld_gold=`which ${gcc_cv_ld}.gold`
2708 # Make sure this gold has minimal split stack support
2709 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2710 ld_vers=`$ld_gold --version | sed 1q`
2711 gold_vers=`echo $ld_vers | sed -n \
2712 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2714 # check that the gold version contains the complete split stack support
2715 # on powerpc64 big and little endian
2717 case "$gold_vers" in
2718 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2720 *) gold_non_default=no
2726 if test $gold_non_default = yes; then
2727 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2728 [Define if the gold linker supports split stack and is available as a non-default])
2731 AC_MSG_RESULT($gold_non_default)
2733 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2734 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2735 case "$ORIGINAL_LD_FOR_TARGET" in
2736 ./collect-ld | ./collect-ld$build_exeext) ;;
2737 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2740 AC_MSG_CHECKING(what linker to use)
2741 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2742 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2743 # Single tree build which includes ld. We want to prefer it
2744 # over whatever linker top-level may have detected, since
2745 # we'll use what we're building after installation anyway.
2746 AC_MSG_RESULT(newly built ld)
2748 in_tree_ld_is_elf=no
2749 if (grep 'EMUL = .*elf' ../ld/Makefile \
2750 || grep 'EMUL = .*linux' ../ld/Makefile \
2751 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2752 in_tree_ld_is_elf=yes
2753 elif test "$ld_is_gold" = yes; then
2754 in_tree_ld_is_elf=yes
2756 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
2759 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2760 if test x$gcc_cv_gld_version != x; then
2764 case $gcc_cv_gld_version in
2767 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2770 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2771 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2773 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2774 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2776 AC_MSG_RESULT($gcc_cv_ld)
2778 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2779 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2780 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2783 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2784 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2786 # Figure out what nm we will be using.
2787 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2788 AS_VAR_SET_IF(gcc_cv_nm,, [
2789 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2790 && test -f ../binutils/Makefile \
2791 && test x$build = x$host; then
2792 gcc_cv_nm=../binutils/nm-new$build_exeext
2793 elif test -x nm$build_exeext; then
2794 gcc_cv_nm=./nm$build_exeext
2795 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2796 gcc_cv_nm="$NM_FOR_TARGET"
2798 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2801 AC_MSG_CHECKING(what nm to use)
2802 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2803 # Single tree build which includes binutils.
2804 AC_MSG_RESULT(newly built nm)
2807 AC_MSG_RESULT($gcc_cv_nm)
2811 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2812 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2813 case "$ORIGINAL_NM_FOR_TARGET" in
2814 ./nm | ./nm$build_exeext) ;;
2815 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2819 # Figure out what objdump we will be using.
2820 AS_VAR_SET_IF(gcc_cv_objdump,, [
2821 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2822 && test -f ../binutils/Makefile \
2823 && test x$build = x$host; then
2824 # Single tree build which includes binutils.
2825 gcc_cv_objdump=../binutils/objdump$build_exeext
2826 elif test -x objdump$build_exeext; then
2827 gcc_cv_objdump=./objdump$build_exeext
2828 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2829 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2831 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2834 AC_MSG_CHECKING(what objdump to use)
2835 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2836 # Single tree build which includes binutils.
2837 AC_MSG_RESULT(newly built objdump)
2838 elif test x$gcc_cv_objdump = x; then
2839 AC_MSG_RESULT(not found)
2841 AC_MSG_RESULT($gcc_cv_objdump)
2844 # Figure out what readelf we will be using.
2845 AS_VAR_SET_IF(gcc_cv_readelf,, [
2846 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2847 && test -f ../binutils/Makefile \
2848 && test x$build = x$host; then
2849 # Single tree build which includes binutils.
2850 gcc_cv_readelf=../binutils/readelf$build_exeext
2851 elif test -x readelf$build_exeext; then
2852 gcc_cv_readelf=./readelf$build_exeext
2853 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2854 gcc_cv_readelf="$READELF_FOR_TARGET"
2856 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2859 AC_MSG_CHECKING(what readelf to use)
2860 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2861 # Single tree build which includes binutils.
2862 AC_MSG_RESULT(newly built readelf)
2863 elif test x$gcc_cv_readelf = x; then
2864 AC_MSG_RESULT(not found)
2866 AC_MSG_RESULT($gcc_cv_readelf)
2869 # Figure out what otool we will be using.
2870 AS_VAR_SET_IF(gcc_cv_otool,, [
2871 if test -x otool$build_exeext; then
2872 gcc_cv_otool=./otool$build_exeext
2873 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2874 gcc_cv_otool="$OTOOL_FOR_TARGET"
2876 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2879 AC_MSG_CHECKING(what otool to use)
2880 if test x$gcc_cv_otool = x; then
2881 AC_MSG_RESULT(not found)
2883 AC_MSG_RESULT($gcc_cv_otool)
2886 # Figure out the dsymutil we will use.
2887 AS_VAR_SET_IF(gcc_cv_dsymutil,, [
2888 if test -x "$DEFAULT_DSYMUTIL"; then
2889 gcc_cv_dsymutil="$DEFAULT_DSYMUTIL"
2890 elif test -x dsymutil$build_exeext; then
2891 gcc_cv_dsymutil=./dsymutil$build_exeext
2892 elif ( set dummy $DSYMUTIL_FOR_TARGET; test -x $[2] ); then
2893 gcc_cv_dsymutil=$DSYMUTIL_FOR_TARGET
2894 elif ( set dummy $DSYMUTIL; test -x $[2] ); then
2895 gcc_cv_dsymutil=$DSYMUTIL
2897 AC_PATH_PROG(gcc_cv_dsymutil, $DSYMUTIL_FOR_TARGET)
2900 ORIGINAL_DSYMUTIL_FOR_TARGET=$gcc_cv_dsymutil
2901 AC_SUBST(ORIGINAL_DSYMUTIL_FOR_TARGET)
2902 case "$ORIGINAL_DSYMUTIL_FOR_TARGET" in
2903 ./dsymutil | ./dsymutil$build_exeext) ;;
2904 *) AC_CONFIG_FILES(dsymutil:exec-tool.in, [chmod +x dsymutil]) ;;
2907 # Figure out what assembler alignment features are present.
2908 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,,
2911 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2912 [Define if your assembler supports .balign and .p2align.])])
2914 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,,
2916 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2917 [Define if your assembler supports specifying the maximum number
2918 of bytes to skip when using the GAS .p2align command.])])
2920 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,,
2922 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2923 [Define if your assembler supports .literal16.])])
2925 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,,
2926 [conftest_label1: .word 0
2928 conftest_label2: .word 0
2930 [if test x$gcc_cv_nm != x; then
2931 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2932 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2933 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2935 else gcc_cv_as_subsection_m1=yes
2937 rm -f conftest.nm1 conftest.nm2
2939 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2940 [Define if your assembler supports .subsection and .subsection -1 starts
2941 emitting at the beginning of your section.])])
2943 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,,
2945 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2947 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,,
2948 [ .weakref foobar, barfnot],,
2949 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2951 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,,
2953 .NSUBSPA $CODE$,COMDAT],,
2954 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2956 # .hidden needs to be supported in both the assembler and the linker,
2957 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2958 # This is irritatingly difficult to feature test for; we have to check the
2959 # date string after the version number. If we've got an in-tree
2960 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2962 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2965 conftest_s=' .globl foobar,hidden'
2968 conftest_s=' .hidden foobar
2972 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,, [$conftest_s])
2975 # Darwin as has some visibility support, though with a different syntax.
2976 gcc_cv_as_hidden=yes
2980 # gnu_indirect_function type is an extension proposed at
2981 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2982 # selection of function implementation
2983 AC_ARG_ENABLE(gnu-indirect-function,
2984 [AS_HELP_STRING([--enable-gnu-indirect-function],
2985 [enable the use of the @gnu_indirect_function to glibc systems])],
2986 [case $enable_gnu_indirect_function in
2988 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2989 Valid choices are 'yes' and 'no'.]) ;;
2991 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2995 AC_MSG_CHECKING(linker ifunc IRELATIVE support)
2996 cat > conftest.s <<EOF
2998 .type foo_resolver, @function
3001 .size foo_resolver, .-foo_resolver
3004 .type foo, %gnu_indirect_function
3005 .set foo, foo_resolver
3008 .type bar, @function
3014 if test x$gcc_cv_as != x \
3015 && test x$gcc_cv_ld != x \
3016 && test x$gcc_cv_readelf != x \
3017 && $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
3018 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1 \
3019 && $gcc_cv_readelf --relocs --wide conftest \
3020 | grep R_RISCV_IRELATIVE > /dev/null 2>&1; then
3021 enable_gnu_indirect_function=yes
3023 rm -f conftest conftest.o conftest.s
3024 AC_MSG_RESULT($enable_gnu_indirect_function)
3028 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
3029 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
3030 [Define if your system supports gnu indirect functions.])
3034 if test $in_tree_ld != yes ; then
3035 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
3036 if echo "$ld_ver" | grep GNU > /dev/null; then
3037 if test x"$ld_is_gold" = xyes; then
3038 # GNU gold --version looks like this:
3040 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
3042 # We extract the binutils version which is more familiar and specific
3043 # than the gold version.
3044 ld_vers=`echo $ld_ver | sed -n \
3045 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3047 # GNU ld --version looks like this:
3049 # GNU ld (GNU Binutils) 2.21.51.20110225
3050 ld_vers=`echo $ld_ver | sed -n \
3051 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3053 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)\(-*\)\([01][0-9]\)\2\([0-3][0-9]\).*$,\1\3\4,p'`
3054 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3055 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3056 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
3060 # Solaris 2 ld -V output looks like this for a regular version:
3062 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
3064 # but test versions add stuff at the end:
3066 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
3068 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
3069 # numbers can be used in ld.so.1 feature checks even if a different
3070 # linker is configured.
3071 ld_ver=`$gcc_cv_ld -V 2>&1`
3072 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
3073 ld_vers=`echo $ld_ver | sed -n \
3074 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
3075 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3076 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3084 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
3085 [[if test $in_tree_ld = yes ; then
3087 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
3088 && test $in_tree_ld_is_elf = yes; then
3089 gcc_cv_ld_hidden=yes
3092 gcc_cv_ld_hidden=yes
3093 if test x"$ld_is_gold" = xyes; then
3095 elif test x"$ld_is_mold" = xyes; then
3097 elif echo "$ld_ver" | grep GNU > /dev/null; then
3098 if test 0"$ld_date" -lt 20020404; then
3099 if test -n "$ld_date"; then
3100 # If there was date string, but was earlier than 2002-04-04, fail
3102 elif test -z "$ld_vers"; then
3103 # If there was no date string nor ld version number, something is wrong
3106 test -z "$ld_vers_patch" && ld_vers_patch=0
3107 if test "$ld_vers_major" -lt 2; then
3109 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
3110 gcc_cv_ld_hidden="no"
3111 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
3119 gcc_cv_ld_hidden=yes
3122 # Darwin ld has some visibility support.
3123 gcc_cv_ld_hidden=yes
3125 hppa64*-*-hpux* | ia64*-*-hpux*)
3126 gcc_cv_ld_hidden=yes
3129 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
3130 # .symbolic was only added in Solaris 9 12/02.
3131 gcc_cv_ld_hidden=yes
3139 libgcc_visibility=no
3140 AC_SUBST(libgcc_visibility)
3141 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
3142 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
3143 libgcc_visibility=yes
3144 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
3145 [Define if your assembler and linker support .hidden.])
3148 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3149 gcc_cv_ld_ro_rw_mix=unknown
3150 if test $in_tree_ld = yes ; then
3151 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3152 && test $in_tree_ld_is_elf = yes; then
3153 gcc_cv_ld_ro_rw_mix=read-write
3155 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3156 echo '.section myfoosect, "a"' > conftest1.s
3157 echo '.section myfoosect, "aw"' > conftest2.s
3158 echo '.byte 1' >> conftest2.s
3159 echo '.section myfoosect, "a"' > conftest3.s
3160 echo '.byte 0' >> conftest3.s
3161 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3162 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3163 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3164 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3165 conftest2.o conftest3.o > /dev/null 2>&1; then
3166 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3167 | sed -e '/myfoosect/!d' -e N`
3168 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3169 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3170 gcc_cv_ld_ro_rw_mix=read-only
3172 gcc_cv_ld_ro_rw_mix=read-write
3177 rm -f conftest.* conftest[123].*
3180 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3181 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3182 [Define if your linker links a mix of read-only
3183 and read-write sections into a read-write section.])
3185 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3187 gcc_AC_INITFINI_ARRAY
3189 # Check if we have .[us]leb128, and support symbol arithmetic with it.
3190 # Older versions of GAS and some non-GNU assemblers, have a bugs handling
3191 # these directives, even when they appear to accept them.
3192 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,,
3199 .uleb128 0x8000000000000000
3202 if test "x$gcc_cv_objdump" != x; then
3203 if $gcc_cv_objdump -s conftest.o 2>/dev/null \
3204 | grep '04800a8e 78808080 80808080 808001' >/dev/null; then
3205 gcc_cv_as_leb128=yes
3207 elif test "x$gcc_cv_otool" != x; then
3208 if $gcc_cv_otool -d conftest.o 2>/dev/null \
3209 | grep '04 80 0a 8e 78 80 80 80 80 80 80 80 80 80 01' >/dev/null; then
3210 gcc_cv_as_leb128=yes
3213 # play safe, assume the assembler is broken.
3217 [AC_DEFINE(HAVE_AS_LEB128, 1,
3218 [Define if your assembler supports .sleb128 and .uleb128.])],
3219 [AC_DEFINE(HAVE_AS_LEB128, 0,
3220 [Define if your assembler supports .sleb128 and .uleb128.])])
3222 # Determine if an .eh_frame section is read-only.
3223 gcc_fn_eh_frame_ro () {
3224 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
3225 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
3226 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
3229 # Check if we have assembler support for unwind directives.
3230 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,,
3236 .cfi_escape 1, 2, 3, 4, 5
3240 # If the linker used on Solaris (like Sun ld) isn't capable of merging
3241 # read-only and read-write sections, we need to make sure that the
3242 # assembler used emits read-write .eh_frame sections.
3243 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
3244 gcc_cv_as_cfi_directive=yes
3245 elif test "x$gcc_cv_objdump" = x; then
3246 # No objdump, err on the side of caution.
3247 gcc_cv_as_cfi_directive=no
3249 if test x$gas = xyes; then
3257 sparc*-*-solaris2.*)
3258 # On Solaris/SPARC, .eh_frame sections should always be read-write.
3259 if gcc_fn_eh_frame_ro $as_32_opt \
3260 || gcc_fn_eh_frame_ro $as_64_opt; then
3261 gcc_cv_as_cfi_directive=no
3263 gcc_cv_as_cfi_directive=yes
3266 i?86-*-solaris2.* | x86_64-*-solaris2.*)
3267 # On Solaris/x86, make sure that GCC and assembler agree on using
3268 # read-only .eh_frame sections for 64-bit.
3269 if gcc_fn_eh_frame_ro $as_32_opt; then
3270 gcc_cv_as_cfi_directive=no
3271 elif gcc_fn_eh_frame_ro $as_64_opt; then
3272 gcc_cv_as_cfi_directive=yes
3274 gcc_cv_as_cfi_directive=no
3281 gcc_cv_as_cfi_directive=yes
3284 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
3285 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,,
3288 .cfi_adjust_cfa_offset 64
3290 .cfi_adjust_cfa_offset 128
3293 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
3294 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
3295 gcc_cv_as_cfi_advance_working=yes
3299 # no objdump, err on the side of caution
3300 gcc_cv_as_cfi_advance_working=no
3302 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
3303 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
3304 [`if test $gcc_cv_as_cfi_directive = yes \
3305 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
3306 [Define 0/1 if your assembler supports CFI directives.])
3308 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
3309 gcc_GAS_CHECK_FEATURE([cfi personality directive],
3310 gcc_cv_as_cfi_personality_directive,,
3313 .cfi_personality 0, symbol
3315 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
3316 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
3317 [Define 0/1 if your assembler supports .cfi_personality.])
3319 gcc_GAS_CHECK_FEATURE([cfi sections directive],
3320 gcc_cv_as_cfi_sections_directive,,
3322 .cfi_sections .debug_frame, .eh_frame
3326 win32 | pe | cygwin* | mingw32*)
3327 # Need to check that we generated the correct relocation for the
3328 # .debug_frame section. This was fixed for binutils 2.21.
3329 gcc_cv_as_cfi_sections_directive=no
3330 if test "x$gcc_cv_objdump" != x; then
3331 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
3332 grep secrel > /dev/null; then
3333 gcc_cv_as_cfi_sections_directive=yes
3338 gcc_cv_as_cfi_sections_directive=yes
3341 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
3342 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
3343 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
3344 [Define 0/1 if your assembler supports .cfi_sections.])
3346 # GAS versions up to and including 2.11.0 may mis-optimize
3348 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,,
3355 .section .eh_frame,"aw",@progbits
3357 .4byte .LECIE1-.LSCIE1
3371 .4byte .LEFDE1-.LASFDE1
3373 .4byte .LASFDE1-__FRAME_BEGIN__
3381 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
3382 cat > conftest.lit <<EOF
3383 0000 10000000 00000000 017a0001 781a0004 .........z..x...
3384 0010 01000000 12000000 18000000 00000000 ................
3385 0020 08000000 04080000 0044 .........D @&t@
3387 cat > conftest.big <<EOF
3388 0000 00000010 00000000 017a0001 781a0004 .........z..x...
3389 0010 00000001 00000012 00000018 00000000 ................
3390 0020 00000008 04000000 0844 .........D @&t@
3392 # If the assembler didn't choke, and we can objdump,
3393 # and we got the correct data, then succeed.
3394 # The text in the here-document typically retains its unix-style line
3395 # endings, while the output of objdump will use host line endings.
3396 # Therefore, use diff -b for the comparisons.
3397 if test x$gcc_cv_objdump != x \
3398 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3399 | tail -3 > conftest.got \
3400 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3401 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3403 gcc_cv_as_eh_frame=yes
3404 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3405 gcc_cv_as_eh_frame=buggy
3407 # Uh oh, what do we do now?
3408 gcc_cv_as_eh_frame=no
3411 if test $gcc_cv_as_eh_frame = buggy; then
3412 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3413 [Define if your assembler mis-optimizes .eh_frame data.])
3416 # Test if the assembler supports the section flag 'e' or #exclude for
3417 # specifying an excluded section.
3418 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3422 if test $gcc_cv_as_section_exclude_e = no; then
3424 # Solaris as uses #exclude instead.
3428 conftest_s='.section "foo1", #exclude'
3430 i?86-*-solaris2* | x86_64-*-solaris2*)
3431 conftest_s='.section foo1, #exclude'
3436 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,
3440 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3441 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3442 [Define if your assembler supports specifying the exclude section flag.])
3444 # Test if the assembler supports the section flag 'R' for specifying
3445 # section with SHF_GNU_RETAIN.
3447 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3448 # assembler supports the section flag 'R', it doesn't mean that
3449 # Solairs ld supports it.
3451 gcc_cv_as_shf_gnu_retain=no
3454 gcc_GAS_CHECK_FEATURE([section 'R' flag], gcc_cv_as_shf_gnu_retain,
3456 [.section .foo,"awR",%progbits
3460 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_GNU_RETAIN,
3461 [`if test $gcc_cv_as_shf_gnu_retain = yes; then echo 1; else echo 0; fi`],
3462 [Define 0/1 if your assembler supports marking sections with SHF_GNU_RETAIN flag.])
3464 # Test if the assembler supports the section flag 'o' for specifying
3465 # section with link-order.
3467 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3468 # assembler supports the section flag 'o', it doesn't mean that
3469 # Solairs ld supports it.
3471 gcc_cv_as_section_link_order=no
3474 gcc_GAS_CHECK_FEATURE([section 'o' flag], gcc_cv_as_section_link_order,
3478 .section __patchable_function_entries,"awo",%progbits,.foo
3482 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_LINK_ORDER,
3483 [`if test $gcc_cv_as_section_link_order = yes; then echo 1; else echo 0; fi`],
3484 [Define 0/1 if your assembler supports 'o' flag in .section directive.])
3486 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3488 [.section .rodata.str, "aMS", @progbits, 1])
3489 if test $gcc_cv_as_shf_merge = no; then
3490 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3492 [.section .rodata.str, "aMS", %progbits, 1])
3494 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3495 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3496 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3498 gcc_cv_ld_aligned_shf_merge=yes
3500 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for
3502 sparc*-*-solaris2.11*)
3503 if test x"$gnu_ld" = xno \
3504 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then
3505 gcc_cv_ld_aligned_shf_merge=no
3509 AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE,
3510 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`],
3511 [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.])
3513 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive,,
3514 [.stabs "gcc2_compiled.",60,0,0,0],,
3515 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
3516 [Define if your assembler supports .stabs.])])
3518 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3519 gcc_cv_as_comdat_group,
3521 [.section .text,"axG",@progbits,.foo,comdat])
3522 if test $gcc_cv_as_comdat_group = yes; then
3523 gcc_cv_as_comdat_group_percent=no
3524 gcc_cv_as_comdat_group_group=no
3526 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3527 gcc_cv_as_comdat_group_percent,
3529 [.section .text,"axG",%progbits,.foo,comdat])
3530 if test $gcc_cv_as_comdat_group_percent = yes; then
3531 gcc_cv_as_comdat_group_group=no
3534 # Sun as uses a completely different syntax.
3539 .group foo,".text%foo",#comdat
3540 .section ".text%foo", #alloc,#execinstr,#progbits
3545 i?86-*-solaris2* | x86_64-*-solaris2*)
3547 .group foo,.text%foo,#comdat
3548 .section .text%foo, "ax", @progbits
3554 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3555 gcc_cv_as_comdat_group_group,
3559 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3560 gcc_cv_as_comdat_group_group=no
3564 if test x"$ld_is_gold" = xyes; then
3566 elif test x"$ld_is_mold" = xyes; then
3568 elif test $in_tree_ld = yes ; then
3570 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3571 && test $in_tree_ld_is_elf = yes; then
3574 elif echo "$ld_ver" | grep GNU > /dev/null; then
3576 if test 0"$ld_date" -lt 20050308; then
3577 if test -n "$ld_date"; then
3578 # If there was date string, but was earlier than 2005-03-08, fail
3580 elif test "$ld_vers_major" -lt 2; then
3582 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3589 *-*-solaris2.1[1-9]*)
3591 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3592 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3595 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3596 # least ld version 1.2267.
3597 if test "$ld_vers_major" -gt 1; then
3599 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3601 elif test "$ld_vers_minor" -ge 2267; then
3606 # Assume linkers other than GNU ld don't support COMDAT group.
3612 # Allow overriding the automatic COMDAT group tests above.
3613 AC_ARG_ENABLE(comdat,
3614 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3615 [comdat_group="$enable_comdat"])
3616 if test $comdat_group = no; then
3617 gcc_cv_as_comdat_group=no
3618 gcc_cv_as_comdat_group_percent=no
3619 gcc_cv_as_comdat_group_group=no
3621 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3622 [`if test $gcc_cv_as_comdat_group = yes \
3623 || test $gcc_cv_as_comdat_group_percent = yes \
3624 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3625 [Define 0/1 if your assembler and linker support COMDAT groups.])
3627 # Restrict this test to Solaris/x86: other targets define this statically.
3629 i?86-*-solaris2* | x86_64-*-solaris2*)
3630 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3631 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3635 # Full support for hidden thunks in linkonce sections only appeared in
3636 # Solaris 11/OpenSolaris.
3637 *-*-solaris2.1[[1-9]]*)
3645 AC_MSG_RESULT($hidden_linkonce)
3646 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3647 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3648 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3652 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3656 .loc 1 1 0 is_stmt 1],,
3657 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3658 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3660 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3661 gcc_cv_as_discriminator,,
3664 .loc 1 1 0 discriminator 1],,
3665 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3666 [Define if your assembler supports the .loc discriminator sub-directive.])])
3668 # Catch the newlib flag of the same name so we can gate GCC features on it.
3669 AC_ARG_ENABLE(newlib-nano-formatted-io,
3670 [AS_HELP_STRING([--enable-newlib-nano-formatted-io], [Use nano version
3672 [case "${enableval}" in
3676 AC_MSG_ERROR([unknown newlib-nano-formatted-io setting $enableval])
3680 # Thread-local storage - the check is heavily parameterized.
3687 .section ".tdata","awT",@progbits
3690 ldq $27,__tls_get_addr($29) !literal!1
3691 lda $16,foo($29) !tlsgd!1
3692 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3693 ldq $27,__tls_get_addr($29) !literal!2
3694 lda $16,foo($29) !tlsldm!2
3695 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3696 ldq $1,foo($29) !gotdtprel
3697 ldah $2,foo($29) !dtprelhi
3698 lda $3,foo($2) !dtprello
3699 lda $4,foo($29) !dtprel
3700 ldq $1,foo($29) !gottprel
3701 ldah $2,foo($29) !tprelhi
3702 lda $3,foo($2) !tprello
3703 lda $4,foo($29) !tprel'
3704 tls_as_opt=--fatal-warnings
3708 add_s r0,r0, @foo@tpoff'
3710 cris-*-*|crisv32-*-*)
3712 .section ".tdata","awT",@progbits
3717 tls_as_opt=--fatal-warnings
3721 .section ".tdata","awT",@progbits
3731 .section ".tdata","awT",@progbits
3735 addil LT%foo-$tls_gdidx$,gp
3736 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3739 addil LT%foo-$tls_ldidx$,gp
3741 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3742 addil LR%foo-$tls_dtpoff$,%ret0
3743 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3745 addil LT%foo-$tls_ieoff$,gp
3746 ldw RT%foo-$tls_ieoff$(%r1),%t2
3749 addil LR%foo-$tls_leoff$,%t1
3750 ldo RR%foo-$tls_leoff$(%r1),%t2'
3751 tls_as_opt=--fatal-warnings
3755 .section ".tdata","awT",%progbits
3764 i[34567]86-*-* | x86_64-*-*)
3766 i[34567]86-*-solaris2.* | x86_64-*-solaris2.*)
3773 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3775 .section .tdata,"awt",@progbits'
3778 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3779 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3783 .section ".tdata","awT",@progbits'
3785 tls_as_opt="--fatal-warnings"
3789 if test x$on_solaris = xyes; then
3791 yes) tls_as_opt="$tls_as_opt --32" ;;
3794 conftest_s="$conftest_s
3798 leal foo@tlsgd(,%ebx,1), %eax
3799 leal foo@tlsldm(%ebx), %eax
3800 leal foo@dtpoff(%eax), %edx
3801 movl foo@gottpoff(%ebx), %eax
3802 subl foo@gottpoff(%ebx), %eax
3803 addl foo@gotntpoff(%ebx), %eax
3804 movl foo@indntpoff, %eax
3805 movl \$foo@tpoff, %eax
3806 subl \$foo@tpoff, %eax
3807 leal foo@ntpoff(%ecx), %eax"
3810 if test x$on_solaris = xyes; then
3812 yes) tls_as_opt="$tls_as_opt --64" ;;
3813 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3816 conftest_s="$conftest_s
3820 leaq foo@tlsgd(%rip), %rdi
3821 leaq foo@tlsld(%rip), %rdi
3822 leaq foo@dtpoff(%rax), %rdx
3823 movq foo@gottpoff(%rip), %rax
3824 movq \$foo@tpoff, %rax"
3830 .section ".tdata","awT",@progbits
3833 addl r16 = @ltoff(@dtpmod(foo#)), gp
3834 addl r17 = @ltoff(@dtprel(foo#)), gp
3835 addl r18 = @ltoff(@tprel(foo#)), gp
3836 addl r19 = @dtprel(foo#), gp
3837 adds r21 = @dtprel(foo#), r13
3838 movl r23 = @dtprel(foo#)
3839 addl r20 = @tprel(foo#), gp
3840 adds r22 = @tprel(foo#), r13
3841 movl r24 = @tprel(foo#)'
3842 tls_as_opt=--fatal-warnings
3846 .section .tdata,"awT",@progbits
3853 tls_as_opt='--fatal-warnings'
3857 .section .tdata,"awT",@progbits
3861 addik r5,r20,x@TLSGD
3862 addik r5,r20,x@TLSLDM'
3863 tls_as_opt='--fatal-warnings'
3867 .section .tdata,"awT",@progbits
3871 addiu $4, $28, %tlsgd(x)
3872 addiu $4, $28, %tlsldm(x)
3873 lui $4, %dtprel_hi(x)
3874 addiu $4, $4, %dtprel_lo(x)
3875 lw $4, %gottprel(x)($28)
3876 lui $4, %tprel_hi(x)
3877 addiu $4, $4, %tprel_lo(x)'
3878 tls_as_opt='-32 --fatal-warnings'
3882 .section .tdata,"awT",@progbits
3887 move.l x@TLSGD(%a5),%a0
3888 move.l x@TLSLDM(%a5),%a0
3889 move.l x@TLSLDO(%a5),%a0
3890 move.l x@TLSIE(%a5),%a0
3891 move.l x@TLSLE(%a5),%a0'
3892 tls_as_opt='--fatal-warnings'
3896 .section ".tdata","awT",@progbits'
3897 tls_as_opt="--fatal-warnings"
3901 .section ".tdata","awT",%progbits
3905 add x0, x0, #:tlsgd_lo12:x
3908 tls_as_opt='--fatal-warnings'
3912 .section ".tdata","awT",@progbits
3915 l.movhi r3, tpoffha(foo)
3917 l.lwz r4, tpofflo(foo)(r3)'
3918 tls_as_opt=--fatal-warnings
3922 .extern __get_tpointer
3938 .section ".tdata","awT",@progbits
3946 addi 3,2,ld0@got@tlsgd
3952 addi 3,2,x1@got@tlsld
3958 addis 9,3,x2@dtprel@ha
3959 addi 9,9,x2@dtprel@l
3962 ld 9,x3@got@dtprel(2)
3966 tls_as_opt="-a64 --fatal-warnings"
3970 .section ".tdata","awT",@progbits
3978 addi 3,31,ld0@got@tlsgd
3980 addi 3,31,x1@got@tlsld
3983 addis 9,3,x2@dtprel@ha
3984 addi 9,9,x2@dtprel@l
3985 lwz 9,x3@got@tprel(31)
3988 addis 9,2,x2@tprel@ha
3989 addi 9,9,x2@tprel@l'
3990 tls_as_opt="-a32 --fatal-warnings"
3994 .section .tdata,"awT",@progbits
3998 call __tls_get_addr'
3999 tls_as_opt='--fatal-warnings'
4003 .section ".tdata","awT",@progbits
4012 l %r1,foo@GOTNTPOFF(%r12)
4013 l %r1,0(%r1):tls_load:foo
4014 bas %r14,0(%r1,%r13):tls_gdcall:foo
4015 bas %r14,0(%r1,%r13):tls_ldcall:foo'
4016 tls_as_opt="-m31 --fatal-warnings"
4020 .section ".tdata","awT",@progbits
4028 lg %r1,foo@GOTNTPOFF(%r12)
4029 larl %r1,foo@INDNTPOFF
4030 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
4031 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
4032 tls_as_opt="-m64 -Aesame --fatal-warnings"
4034 sh-*-* | sh[123456789lbe]*-*-*)
4036 .section ".tdata","awT",@progbits
4044 tls_as_opt=--fatal-warnings
4048 sparc*-sun-solaris2.*)
4055 if test x$on_solaris = xyes && test x$gas_flag = xno; then
4057 .section ".tdata",#alloc,#write,#tls'
4060 .section ".tdata","awT",@progbits'
4061 tls_as_opt="-32 --fatal-warnings"
4063 conftest_s="$conftest_s
4066 sethi %tgd_hi22(foo), %o0
4067 add %o0, %tgd_lo10(foo), %o1
4068 add %l7, %o1, %o0, %tgd_add(foo)
4069 call __tls_get_addr, %tgd_call(foo)
4070 sethi %tldm_hi22(foo), %l1
4071 add %l1, %tldm_lo10(foo), %l2
4072 add %l7, %l2, %o0, %tldm_add(foo)
4073 call __tls_get_addr, %tldm_call(foo)
4074 sethi %tldo_hix22(foo), %l3
4075 xor %l3, %tldo_lox10(foo), %l4
4076 add %o0, %l4, %l5, %tldo_add(foo)
4077 sethi %tie_hi22(foo), %o3
4078 add %o3, %tie_lo10(foo), %o3
4079 ld [%l7 + %o3], %o2, %tie_ld(foo)
4080 add %g7, %o2, %o4, %tie_add(foo)
4081 sethi %tle_hix22(foo), %l1
4082 xor %l1, %tle_lox10(foo), %o5
4083 ld [%g7 + %o5], %o1"
4087 .section ".tdata","awT",@progbits
4090 addli r0, zero, tls_gd(foo)
4091 auli r0, zero, tls_gd_ha16(foo)
4092 addli r0, r0, tls_gd_lo16(foo)
4094 addli r0, zero, tls_ie(foo)
4095 auli r0, r0, tls_ie_ha16(foo)
4096 addli r0, r0, tls_ie_lo16(foo)'
4097 tls_as_opt="--fatal-warnings"
4101 .section ".tdata","awT",@progbits
4104 shl16insli r0, zero, hw0_last_tls_gd(foo)
4105 shl16insli r0, zero, hw1_last_tls_gd(foo)
4106 shl16insli r0, r0, hw0_tls_gd(foo)
4108 shl16insli r0, zero, hw1_last_tls_ie(foo)
4109 shl16insli r0, r0, hw0_tls_ie(foo)'
4110 tls_as_opt="--fatal-warnings"
4114 .section ".tdata","awT",@progbits
4117 movi a8, foo@TLSFUNC
4118 movi a10, foo@TLSARG
4119 callx8.tls a8, foo@TLSCALL'
4124 if test "x$enable_tls" = xno ; then
4125 : # TLS explicitly disabled.
4126 elif test "x$enable_tls" = xyes ; then
4127 set_have_as_tls=yes # TLS explicitly enabled.
4128 elif test -z "$conftest_s"; then
4129 : # If we don't have a check, assume no support.
4131 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
4132 [$tls_as_opt], [$conftest_s],,
4133 [set_have_as_tls=yes])
4135 if test $set_have_as_tls = yes ; then
4136 AC_DEFINE(HAVE_AS_TLS, 1,
4137 [Define if your assembler and linker support thread-local storage.])
4140 # Target-specific assembler checks.
4142 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
4143 gcc_cv_ld_static_dynamic=no
4144 gcc_cv_ld_static_option='-Bstatic'
4145 gcc_cv_ld_dynamic_option='-Bdynamic'
4146 if test $in_tree_ld = yes ; then
4147 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
4148 gcc_cv_ld_static_dynamic=yes
4150 elif test x$gcc_cv_ld != x; then
4151 # Check if linker supports -Bstatic/-Bdynamic option
4152 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
4153 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
4154 gcc_cv_ld_static_dynamic=yes
4157 # AIX ld uses -b flags
4158 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
4159 gcc_cv_ld_static_dynamic=yes
4160 gcc_cv_ld_static_option="-bstatic"
4161 gcc_cv_ld_dynamic_option="-bdynamic"
4163 # HP-UX ld uses -a flags to select between shared and archive.
4165 if test x"$gnu_ld" = xno; then
4166 gcc_cv_ld_static_dynamic=yes
4167 gcc_cv_ld_static_option="-aarchive_shared"
4168 gcc_cv_ld_dynamic_option="-adefault"
4171 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
4173 gcc_cv_ld_static_dynamic=yes
4178 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
4179 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
4180 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
4181 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
4182 [Define to the linker option to disable use of shared objects.])
4183 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
4184 [Define to the linker option to enable use of shared objects.])
4186 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
4188 AC_MSG_CHECKING(linker --version-script option)
4189 gcc_cv_ld_version_script=no
4190 ld_version_script_option=''
4191 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4192 gcc_cv_ld_version_script=yes
4193 ld_version_script_option='--version-script'
4194 elif test x$gcc_cv_ld != x; then
4196 # Solaris 2 ld always supports -M. It also supports a subset of
4197 # --version-script since Solaris 11.4, but requires
4198 # -z gnu-version-script-compat to activate.
4200 gcc_cv_ld_version_script=yes
4201 ld_version_script_option='-M'
4205 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4206 AC_MSG_RESULT($gcc_cv_ld_version_script)
4207 AC_SUBST(ld_version_script_option)
4209 AC_MSG_CHECKING(linker soname option)
4211 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4212 gcc_cv_ld_soname=yes
4213 ld_soname_option='-soname'
4214 elif test x$gcc_cv_ld != x; then
4217 gcc_cv_ld_soname=yes
4218 ld_soname_option='-install_name'
4220 # Solaris 2 ld always supports -h. It also supports --soname for GNU
4221 # ld compatiblity since some Solaris 10 update.
4223 gcc_cv_ld_soname=yes
4224 ld_soname_option='-h'
4228 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4229 AC_MSG_RESULT($gcc_cv_ld_soname)
4230 AC_SUBST(ld_soname_option)
4232 if test x"$demangler_in_ld" = xyes; then
4233 AC_MSG_CHECKING(linker --demangle support)
4234 gcc_cv_ld_demangle=no
4235 if test $in_tree_ld = yes; then
4236 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
4237 gcc_cv_ld_demangle=yes
4239 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
4240 # Check if the GNU linker supports --demangle option
4241 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
4242 gcc_cv_ld_demangle=yes
4245 if test x"$gcc_cv_ld_demangle" = xyes; then
4246 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
4247 [Define if your linker supports --demangle option.])
4249 AC_MSG_RESULT($gcc_cv_ld_demangle)
4252 AC_MSG_CHECKING(linker plugin support)
4254 if test -f liblto_plugin.la; then
4255 save_ld_ver="$ld_ver"
4256 save_ld_vers_major="$ld_vers_major"
4257 save_ld_vers_minor="$ld_vers_minor"
4258 save_ld_is_gold="$ld_is_gold"
4262 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
4264 # FIXME: ld_is_gold?
4265 ld_vers_major="$gcc_cv_gld_major_version"
4266 ld_vers_minor="$gcc_cv_gld_minor_version"
4268 # Determine plugin linker version.
4269 # FIXME: Partial duplicate from above, generalize.
4271 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
4272 if echo "$ld_ver" | grep GNU > /dev/null; then
4273 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
4275 ld_vers=`echo $ld_ver | sed -n \
4276 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
4278 ld_vers=`echo $ld_ver | sed -n \
4279 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
4281 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
4282 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
4287 # Determine plugin support.
4288 if echo "$ld_ver" | grep GNU > /dev/null; then
4289 # Require GNU ld or gold 2.21+ for plugin support by default.
4290 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
4292 elif test "$ld_is_mold" = yes; then
4294 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
4295 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
4300 ld_ver="$save_ld_ver"
4301 ld_vers_major="$save_ld_vers_major"
4302 ld_vers_minor="$save_ld_vers_minor"
4303 ld_is_gold="$save_ld_is_gold"
4305 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
4306 [Define to the level of your linker's plugin support.])
4307 AC_MSG_RESULT($gcc_cv_lto_plugin)
4309 # Target OS-specific assembler checks.
4311 case "$target_os" in
4313 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
4314 gcc_cv_as_mmacosx_version_min,
4315 [-mmacosx-version-min=10.1], [.text],,
4316 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
4317 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
4321 # Target CPU-specific assembler checks.
4325 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,
4326 [-mabi=lp64], [.text],,,)
4327 if test x$gcc_cv_as_aarch64_mabi = xyes; then
4328 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
4329 [Define if your assembler supports the -mabi option.])
4331 if test x$with_abi = xilp32; then
4332 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4333 Upgrade the Assembler.])
4335 if test x"$with_multilib_list" = xdefault; then
4336 TM_MULTILIB_CONFIG=lp64
4338 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
4339 for aarch64_multilib in ${aarch64_multilibs}; do
4340 case ${aarch64_multilib} in
4342 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4343 Upgrade the Assembler.])
4351 # Check if we have binutils support for relocations types needed by -fpic
4352 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,
4355 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
4356 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
4357 [Define if your assembler supports relocs needed by -fpic.])])
4358 # Enable Branch Target Identification Mechanism and Return Address
4359 # Signing by default.
4360 AC_ARG_ENABLE(standard-branch-protection,
4362 AS_HELP_STRING([--enable-standard-branch-protection],
4363 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4364 AS_HELP_STRING([--disable-standard-branch-protection],
4365 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4370 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1"
4375 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
4376 Valid choices are 'yes' and 'no'.])
4381 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
4382 AC_ARG_ENABLE(fix-cortex-a53-835769,
4384 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
4385 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4386 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
4387 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4392 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4397 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4398 Valid choices are 'yes' and 'no'.])
4404 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4405 AC_ARG_ENABLE(fix-cortex-a53-843419,
4407 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4408 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4409 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4410 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4415 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4420 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4421 Valid choices are 'yes' and 'no'.])
4429 # All TARGET_ABI_OSF targets.
4430 alpha*-*-linux* | alpha*-*-*bsd*)
4431 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4432 gcc_cv_as_alpha_explicit_relocs,,
4435 extbl $3, $2, $3 !lituse_bytoff!1
4436 ldq $2, a($29) !literal!1
4437 ldq $4, b($29) !literal!2
4438 ldq_u $3, 0($2) !lituse_base!1
4439 ldq $27, f($29) !literal!5
4440 jsr $26, ($27), f !lituse_jsr!5
4441 ldah $29, 0($26) !gpdisp!3
4442 lda $0, c($29) !gprel
4443 ldah $1, d($29) !gprelhigh
4444 lda $1, d($1) !gprellow
4445 lda $29, 0($29) !gpdisp!3],,
4446 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4447 [Define if your assembler supports explicit relocations.])])
4448 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4449 gcc_cv_as_alpha_jsrdirect_relocs,,
4452 ldq $27, a($29) !literal!1
4453 jsr $26, ($27), a !lituse_jsrdirect!1],,
4454 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4455 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4459 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,
4460 [--mlink-relax], [.text],,
4461 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4462 [Define if your avr assembler supports --mlink-relax option.])])
4464 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,
4466 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4467 [Define if your avr assembler supports -mrmw option.])])
4469 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4470 gcc_cv_as_avr_mgccisr,
4476 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4477 [Define if your avr assembler supports -mgcc-isr option.])])
4479 # Check how default linker description file implements .rodata for
4480 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4481 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4482 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4483 cat > conftest.s <<EOF
4484 .section .rodata,"a",@progbits
4486 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4491 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4492 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4493 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4494 if test -s conftest.nm
4496 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4498 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4499 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4501 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4502 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4503 cat conftest.nm >&AS_MESSAGE_LOG_FD
4504 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4505 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4508 AC_MSG_RESULT(test failed)
4509 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4510 cat conftest.s >&AS_MESSAGE_LOG_FD
4511 AC_MSG_WARN([[see `config.log' for details]])
4513 rm -f conftest.s conftest.o conftest.elf conftest.nm
4517 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4518 gcc_cv_as_cris_no_mul_bug,
4519 [-no-mul-bug-abort], [.text],,
4520 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4521 [Define if your assembler supports the -no-mul-bug-abort option.])])
4525 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,
4527 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4528 [Define if your assembler supports -relax option.])])
4530 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4531 gcc_cv_as_sparc_gotdata_op,
4538 sethi %gdop_hix22(foo), %g1
4539 xor %g1, %gdop_lox10(foo), %g1
4540 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4541 [if test x$gcc_cv_ld != x \
4542 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4543 if test x$gcc_cv_objdump != x; then
4544 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4545 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4546 gcc_cv_as_sparc_gotdata_op=no
4548 gcc_cv_as_sparc_gotdata_op=yes
4553 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4554 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4556 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4557 gcc_cv_as_sparc_ua_pcrel,
4565 .uaword %r_disp32(foo)],
4566 [if test x$gcc_cv_ld != x \
4567 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4568 gcc_cv_as_sparc_ua_pcrel=yes
4571 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4572 [Define if your assembler and linker support unaligned PC relative relocs.])
4574 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4575 gcc_cv_as_sparc_ua_pcrel_hidden,
4580 .uaword %r_disp32(foo)
4581 .byte 0x32, 0x33, 0x34
4586 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4587 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4588 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4589 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4590 if $gcc_cv_objdump -R conftest 2> /dev/null \
4591 | grep 'DISP32' > /dev/null 2>&1; then
4594 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4598 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4599 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4600 ]) # unaligned pcrel relocs
4602 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4603 gcc_cv_as_sparc_offsetable_lo10,
4606 or %g1, %lo(ab) + 12, %g1
4607 or %g1, %lo(ab + 12), %g1],
4608 [if test x$gcc_cv_objdump != x \
4609 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4610 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4611 gcc_cv_as_sparc_offsetable_lo10=yes
4613 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4614 [Define if your assembler supports offsetable %lo().])])
4616 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4617 gcc_cv_as_sparc_fmaf,
4620 .register %g2, #scratch
4621 .register %g3, #scratch
4623 fmaddd %f0, %f2, %f4, %f6
4624 addxccc %g1, %g2, %g3
4625 fsrl32 %f2, %f4, %f8
4626 fnaddd %f10, %f12, %f14],,
4627 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4628 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4630 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4631 gcc_cv_as_sparc_sparc4,
4634 .register %g2, #scratch
4635 .register %g3, #scratch
4638 1: cwbneg %g2, %g3, 1f
4641 aes_kexpand0 %f4, %f6, %f8
4642 des_round %f38, %f40, %f42, %f44
4643 camellia_f %f54, %f56, %f58, %f60
4644 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4645 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4646 [Define if your assembler supports SPARC4 instructions.])])
4648 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4649 gcc_cv_as_sparc_sparc5,
4652 .register %g2, #scratch
4653 .register %g3, #scratch
4656 fpadd8 %f0, %f2, %f4],,
4657 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4658 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4660 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4661 gcc_cv_as_sparc_sparc6,
4664 .register %g2, #scratch
4665 .register %g3, #scratch
4668 fpsll64x %f0, %f2, %f4],,
4669 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4670 [Define if your assembler supports SPARC6 instructions.])])
4672 gcc_GAS_CHECK_FEATURE([LEON instructions],
4673 gcc_cv_as_sparc_leon,
4676 .register %g2, #scratch
4677 .register %g3, #scratch
4681 casa [[%g2]] 0xb, %g3, %g1],,
4682 [AC_DEFINE(HAVE_AS_LEON, 1,
4683 [Define if your assembler supports LEON instructions.])])
4687 i[34567]86-*-* | x86_64-*-*)
4691 # Full C++ conformance when using a shared libstdc++-v3 requires some
4692 # support from the Cygwin DLL, which in more recent versions exports
4693 # wrappers to aid in interposing and redirecting operators new, delete,
4694 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4695 # are configuring for a version of Cygwin that exports the wrappers.
4696 if test x$host = x$target && test x$host_cpu = xi686; then
4697 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4699 # Can't check presence of libc functions during cross-compile, so
4700 # we just have to assume we're building for an up-to-date target.
4701 gcc_ac_cygwin_dll_wrappers=yes
4703 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4704 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4705 [Define if you want to generate code by default that assumes that the
4706 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4709 cygwin* | pe | mingw32*)
4710 # Recent binutils allows the three-operand form of ".comm" on PE. This
4711 # definition is used unconditionally to initialise the default state of
4712 # the target option variable that governs usage of the feature.
4713 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,,
4715 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4716 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4717 [Define if your assembler supports specifying the alignment
4718 of objects allocated using the GAS .comm command.])
4719 # Used for DWARF 2 in PE
4720 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4721 gcc_cv_as_ix86_pe_secrel32,,
4726 [if test x$gcc_cv_ld != x \
4727 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4728 gcc_cv_as_ix86_pe_secrel32=yes
4731 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4732 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4733 # Test if the assembler supports the extended form of the .section
4734 # directive that specifies section alignment. LTO support uses this,
4735 # but normally only after installation, so we warn but don't fail the
4736 # configure if LTO is enabled but the assembler does not support it.
4737 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4738 -fatal-warnings,[.section lto_test,"dr0"])
4739 if test x$gcc_cv_as_section_has_align != xyes; then
4740 case ",$enable_languages," in
4742 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4749 darwin2* | darwin19*)
4750 gcc_GAS_CHECK_FEATURE([llvm assembler x86-pad-for-align option],
4751 gcc_cv_as_mllvm_x86_pad_for_align,
4752 [-mllvm -x86-pad-for-align=false], [.text],,
4753 [AC_DEFINE(HAVE_AS_MLLVM_X86_PAD_FOR_ALIGN, 1,
4754 [Define if your Mac OS X assembler supports -mllvm -x86-pad-for-align=false.])])
4758 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,
4759 [-xbrace_comment=no], [.text],,
4760 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4761 [Define if your assembler supports -xbrace_comment option.])])
4763 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4764 gcc_cv_as_ix86_filds,,
4765 [filds (%ebp); fists (%ebp)],,
4766 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4767 [Define if your assembler uses filds and fists mnemonics.])])
4769 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4770 gcc_cv_as_ix86_fildq,,
4771 [fildq (%ebp); fistpq (%ebp)],,
4772 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4773 [Define if your assembler uses fildq and fistq mnemonics.])])
4775 gcc_GAS_CHECK_FEATURE([cmov syntax],
4776 gcc_cv_as_ix86_cmov_sun_syntax,,
4777 [cmovl.l %edx, %eax],,
4778 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4779 [Define if your assembler supports the Sun syntax for cmov.])])
4781 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4782 gcc_cv_as_ix86_ffreep,,
4784 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4785 [Define if your assembler supports the ffreep mnemonic.])])
4787 gcc_GAS_CHECK_FEATURE([.quad directive],
4788 gcc_cv_as_ix86_quad,,
4790 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4791 [Define if your assembler supports the .quad directive.])])
4793 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4794 gcc_cv_as_ix86_sahf,,
4797 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4798 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4800 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4801 gcc_cv_as_ix86_interunit_movq,,
4805 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4806 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4807 [Define if your assembler supports interunit movq mnemonic.])
4809 gcc_GAS_CHECK_FEATURE([hle prefixes],
4810 gcc_cv_as_ix86_hle,,
4811 [lock xacquire cmpxchg %esi, (%ecx)],,
4812 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4813 [Define if your assembler supports HLE prefixes.])])
4815 gcc_GAS_CHECK_FEATURE([swap suffix],
4816 gcc_cv_as_ix86_swap,,
4817 [movl.s %esp, %ebp],,
4818 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4819 [Define if your assembler supports the swap suffix.])])
4821 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4822 gcc_cv_as_ix86_diff_sect_delta,,
4830 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4831 [Define if your assembler supports the subtraction of symbols in different sections.])])
4833 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4834 gcc_cv_as_ix86_rep_lock_prefix,,
4840 lock addl %edi, (%eax,%esi)
4841 lock orl $0, (%esp)],,
4842 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4843 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4845 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4846 gcc_cv_as_ix86_ud2,,
4848 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4849 [Define if your assembler supports the 'ud2' mnemonic.])])
4851 # Enforce 32-bit output with gas and gld.
4852 if test x$gas = xyes; then
4853 as_ix86_gas_32_opt="--32"
4855 if echo "$ld_ver" | grep GNU > /dev/null; then
4856 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4857 ld_ix86_gld_32_opt="-melf_i386_sol2"
4859 ld_ix86_gld_32_opt="-melf_i386"
4863 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4864 gcc_cv_as_ix86_tlsgdplt,
4865 [$as_ix86_gas_32_opt],
4866 [call tls_gd@tlsgdplt],
4867 [if test x$gcc_cv_ld != x \
4868 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4869 gcc_cv_as_ix86_tlsgdplt=yes
4872 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4873 [Define if your assembler and linker support @tlsgdplt.])])
4876 .section .tdata,"aw'$tls_section_flag'",@progbits
4878 .section .text,"ax",@progbits
4879 call tls_ld@tlsldmplt'
4881 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4882 gcc_cv_as_ix86_tlsldmplt,
4883 [$as_ix86_gas_32_opt],
4885 [if test x$gcc_cv_ld != x \
4886 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4887 gcc_cv_as_ix86_tlsldmplt=yes
4890 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4891 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4892 [Define to 1 if your assembler and linker support @tlsldmplt.])
4895 .section .text,"ax",@progbits
4897 .type _start, @function
4899 leal value@tlsldm(%ebx), %eax
4900 call ___tls_get_addr@plt
4902 .section .tdata,"aw'$tls_section_flag'",@progbits
4903 .type value, @object
4905 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4906 gcc_cv_as_ix86_tlsldm,
4907 [$as_ix86_gas_32_opt],
4909 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4910 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4911 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4912 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4913 gcc_cv_as_ix86_tlsldm=yes
4917 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4918 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4919 [Define to 1 if your assembler and linker support @tlsldm.])
4930 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4931 gcc_cv_as_ix86_got32x,
4932 [$as_ix86_gas_32_opt],
4934 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4935 && test x$gcc_cv_readelf != x \
4936 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4937 | grep R_386_GOT32X > /dev/null 2>&1 \
4938 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4939 if $gcc_cv_objdump -dw conftest 2>&1 \
4940 | grep 0xffffff > /dev/null 2>&1; then
4941 gcc_cv_as_ix86_got32x=no
4943 gcc_cv_as_ix86_got32x=yes
4947 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4948 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4949 [Define 0/1 if your assembler and linker support @GOT.])
4951 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4952 gcc_cv_as_ix86_gotoff_in_data,
4953 [$as_ix86_gas_32_opt],
4959 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4960 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4961 [Define true if the assembler supports '.long foo@GOTOFF'.])
4964 .section .text,"ax",@progbits
4966 .type _start, @function
4968 leal ld@tlsldm(%ecx), %eax
4969 call *___tls_get_addr@GOT(%ecx)
4970 leal gd@tlsgd(%ecx), %eax
4971 call *___tls_get_addr@GOT(%ecx)
4973 .section .tdata,"aw'$tls_section_flag'",@progbits
4981 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4982 gcc_cv_as_ix86_tls_get_addr_via_got,
4983 [$as_ix86_gas_32_opt],
4985 [if test x$gcc_cv_ld != x \
4986 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4987 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4990 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4991 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4992 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4996 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4997 gcc_cv_as_ia64_ltoffx_ldxmov_relocs,,
4999 addl r15 = @ltoffx(x#), gp
5001 ld8.mov r16 = [[r15]], x#
5003 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
5004 [Define if your assembler supports ltoffx and ldxmov relocations.])])
5012 gcc_GAS_CHECK_FEATURE([.machine directive support],
5013 gcc_cv_as_machine_directive,,
5014 [ .machine ppc7400])
5015 if test x$gcc_cv_as_machine_directive != xyes; then
5016 echo "*** This target requires an assembler supporting \".machine\"" >&2
5017 echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
5018 test x$build = x$target && exit 1
5024 *-*-aix*) conftest_s=' .machine "pwr5"
5027 *-*-darwin*) conftest_s=' .text
5029 *) conftest_s=' .machine power4
5034 gcc_GAS_CHECK_FEATURE([mfcr field support],
5035 gcc_cv_as_powerpc_mfcrf,,
5037 [AC_DEFINE(HAVE_AS_MFCRF, 1,
5038 [Define if your assembler supports mfcr field.])])
5041 *-*-aix*) conftest_s=' .csect .text[[PR]]
5043 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
5047 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
5048 *) conftest_s=' .text
5050 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
5053 gcc_GAS_CHECK_FEATURE([rel16 relocs],
5054 gcc_cv_as_powerpc_rel16, -a32,
5056 [AC_DEFINE(HAVE_AS_REL16, 1,
5057 [Define if your assembler supports R_PPC_REL16 relocs.])])
5060 *-*-aix*) conftest_s=' .machine "pwr7"
5063 *) conftest_s=' .machine power7
5068 gcc_GAS_CHECK_FEATURE([vector-scalar support],
5069 gcc_cv_as_powerpc_vsx, -a32,
5071 [AC_DEFINE(HAVE_AS_VSX, 1,
5072 [Define if your assembler supports VSX instructions.])])
5074 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5075 gcc_cv_as_powerpc_gnu_attribute,,
5076 [.gnu_attribute 4,1],,
5077 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5078 [Define if your assembler supports .gnu_attribute.])])
5080 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
5081 gcc_cv_as_powerpc_entry_markers,-a64 --fatal-warnings,
5082 [ .reloc .,R_PPC64_ENTRY; nop],,
5083 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
5084 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
5086 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
5087 gcc_cv_as_powerpc_pltseq_markers,-a32 --fatal-warnings,
5088 [ .reloc .,R_PPC_PLTSEQ; nop],,
5089 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
5090 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
5094 gcc_GAS_CHECK_FEATURE([AIX .ref support],
5096 [ .csect stuff[[rw]]
5102 [AC_DEFINE(HAVE_AS_REF, 1,
5103 [Define if your assembler supports .ref])])
5105 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
5106 gcc_cv_as_aix_dwloc,,
5111 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
5112 [Define if your assembler supports AIX debug frame section label reference.])])
5118 gcc_GAS_CHECK_FEATURE([explicit relocation support],
5119 gcc_cv_as_mips_explicit_relocs,,
5120 [ lw $4,%gp_rel(foo)($4)],,
5121 [if test x$target_cpu_default = x
5122 then target_cpu_default=MASK_EXPLICIT_RELOCS
5123 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
5126 gcc_GAS_CHECK_FEATURE([-mno-shared support],
5127 gcc_cv_as_mips_no_shared,[-mno-shared], [nop],,
5128 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
5129 [Define if the assembler understands -mno-shared.])])
5131 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5132 gcc_cv_as_mips_gnu_attribute,,
5133 [.gnu_attribute 4,1],,
5134 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5135 [Define if your assembler supports .gnu_attribute.])])
5137 gcc_GAS_CHECK_FEATURE([.module support],
5138 gcc_cv_as_mips_dot_module,[-32],
5141 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
5142 [Define if your assembler supports .module.])])
5143 if test x$gcc_cv_as_mips_dot_module = xno \
5144 && test x$with_fp_32 != x; then
5146 [Requesting --with-fp-32= requires assembler support for .module.])
5149 gcc_GAS_CHECK_FEATURE([.micromips support],
5150 gcc_cv_as_micromips_support,[--fatal-warnings],
5152 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
5153 [Define if your assembler supports the .set micromips directive])])
5155 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5156 gcc_cv_as_mips_dtprelword,,
5157 [.section .tdata,"awT",@progbits
5161 .dtprelword x+0x8000],,
5162 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5163 [Define if your assembler supports .dtprelword.])])
5165 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
5166 gcc_cv_as_mips_dspr1_mult,,
5176 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
5177 [Define if your assembler supports DSPR1 mult.])])
5179 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
5180 gcc_cv_as_ld_jalr_reloc=no
5181 if test $gcc_cv_as_mips_explicit_relocs = yes; then
5182 if test $in_tree_ld = yes ; then
5183 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
5184 && test $in_tree_ld_is_elf = yes; then
5185 gcc_cv_as_ld_jalr_reloc=yes
5187 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
5188 echo ' .ent x' > conftest.s
5189 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
5190 echo ' lw $25,%call16(y)($28)' >> conftest.s
5191 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
5192 echo '1: jalr $25' >> conftest.s
5193 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
5194 echo '1: jalr $25' >> conftest.s
5195 echo ' .end x' >> conftest.s
5196 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
5197 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
5198 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
5199 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
5200 gcc_cv_as_ld_jalr_reloc=yes
5206 if test $gcc_cv_as_ld_jalr_reloc = yes; then
5207 if test x$target_cpu_default = x; then
5208 target_cpu_default=MASK_RELAX_PIC_CALLS
5210 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
5213 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
5215 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
5216 [gcc_cv_ld_mips_personality_relaxation],
5217 [gcc_cv_ld_mips_personality_relaxation=no
5218 if test $in_tree_ld = yes ; then
5219 if test "$gcc_cv_gld_major_version" -eq 2 \
5220 -a "$gcc_cv_gld_minor_version" -ge 21 \
5221 -o "$gcc_cv_gld_major_version" -gt 2; then
5222 gcc_cv_ld_mips_personality_relaxation=yes
5224 elif test x$gcc_cv_as != x \
5225 -a x$gcc_cv_ld != x \
5226 -a x$gcc_cv_readelf != x ; then
5227 cat > conftest.s <<EOF
5229 .cfi_personality 0x80,indirect_ptr
5236 .section .data,"aw",@progbits
5240 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
5241 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
5242 if $gcc_cv_readelf -d conftest 2>&1 \
5243 | grep TEXTREL > /dev/null 2>&1; then
5245 elif $gcc_cv_readelf --relocs conftest 2>&1 \
5246 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
5249 gcc_cv_ld_mips_personality_relaxation=yes
5253 rm -f conftest.s conftest.o conftest])
5254 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
5255 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
5256 [Define if your linker can relax absolute .eh_frame personality
5257 pointers into PC-relative form.])
5260 gcc_GAS_CHECK_FEATURE([-mnan= support],
5263 [AC_DEFINE(HAVE_AS_NAN, 1,
5264 [Define if the assembler understands -mnan=.])])
5265 if test x$gcc_cv_as_mips_nan = xno \
5266 && test x$with_nan != x; then
5268 [Requesting --with-nan= requires assembler support for -mnan=])
5272 # Earlier GAS versions generically support .gnu_attribute, but the
5273 # msp430 assembler will not do anything with it.
5274 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5275 gcc_cv_as_msp430_gnu_attribute,,
5276 [.gnu_attribute 4,1],,
5277 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5278 [Define if your assembler supports .gnu_attribute.])])
5279 gcc_GAS_CHECK_FEATURE([.mspabi_attribute support],
5280 gcc_cv_as_msp430_mspabi_attribute,,
5281 [.mspabi_attribute 4,2],,
5282 [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1,
5283 [Define if your assembler supports .mspabi_attribute.])])
5284 if test x$enable_newlib_nano_formatted_io = xyes; then
5285 AC_DEFINE(HAVE_NEWLIB_NANO_FORMATTED_IO, 1, [Define if GCC has been
5286 configured with --enable-newlib-nano-formatted-io.])
5290 # Versions 2.33 and earlier lacked support for the %gotoff relocation
5291 # syntax that is documented in the ABI specification.
5292 gcc_GAS_CHECK_FEATURE([support for %gotoff relocations in constant data],
5293 gcc_cv_as_nios2_gotoff_relocation,,
5296 .long %gotoff(foo)],,
5297 [AC_DEFINE(HAVE_AS_NIOS2_GOTOFF_RELOCATION, 1,
5298 [Define if your assembler supports %gotoff relocation syntax.])])
5301 gcc_GAS_CHECK_FEATURE([.attribute support],
5302 gcc_cv_as_riscv_attribute,,
5303 [.attribute stack_align,4],,
5304 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1,
5305 [Define if your assembler supports .attribute.])])
5306 gcc_GAS_CHECK_FEATURE([-misa-spec= support],
5307 gcc_cv_as_riscv_isa_spec,
5309 [AC_DEFINE(HAVE_AS_MISA_SPEC, 1,
5310 [Define if the assembler understands -misa-spec=.])])
5311 gcc_GAS_CHECK_FEATURE([-march=rv32i_zifencei support],
5312 gcc_cv_as_riscv_march_zifencei,
5313 [-march=rv32i_zifencei2p0],,,
5314 [AC_DEFINE(HAVE_AS_MARCH_ZIFENCEI, 1,
5315 [Define if the assembler understands -march=rv*_zifencei.])])
5318 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5319 gcc_cv_as_loongarch_dtprelword, [2,18,0],,
5320 [.section .tdata,"awT",@progbits
5324 .dtprelword x+0x8000],,
5325 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5326 [Define if your assembler supports .dtprelword.])])
5329 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5330 gcc_cv_as_s390_gnu_attribute,,
5331 [.gnu_attribute 8,1],,
5332 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5333 [Define if your assembler supports .gnu_attribute.])])
5334 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
5335 gcc_cv_as_s390_machine_machinemode,,
5340 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
5341 [Define if your assembler supports .machine and .machinemode.])])
5342 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
5343 gcc_cv_as_s390_architecture_modifiers,,
5344 [ .machine z13+vx ],,
5345 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
5346 [Define if your assembler supports architecture modifiers.])])
5347 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
5348 gcc_cv_as_s390_vector_loadstore_alignment_hints,,
5349 [ vl %v24,0(%r15),3 ],,
5350 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
5351 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
5352 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints on z13],
5353 gcc_cv_as_s390_vector_loadstore_alignment_hints_on_z13, [-mzarch -march=z13],
5354 [ vl %v24,0(%r15),3 ],,
5355 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS_ON_Z13, 1,
5356 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument on z13.])])
5361 # Mips, LoongArch and HP-UX need the GNU assembler.
5362 # Linux on IA64 might be able to use the Intel assembler.
5365 mips*-*-* | loongarch*-*-* | *-*-hpux* )
5366 if test x$gas_flag = xyes \
5367 || test x"$host" != x"$build" \
5368 || test ! -x "$gcc_cv_as" \
5369 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
5372 echo "*** This configuration requires the GNU assembler" >&2
5378 # This tests if the assembler supports two registers for global_load functions
5379 # (like in LLVM versions <12) or one register (like in LLVM 12).
5382 AC_MSG_CHECKING(assembler fix for global_load functions)
5383 gcc_cv_as_gcn_global_load_fixed=yes
5384 if test x$gcc_cv_as != x; then
5385 cat > conftest.s <<EOF
5386 global_store_dwordx2 v[[1:2]], v[[4:5]], s[[14:15]]
5388 if $gcc_cv_as -triple=amdgcn--amdhsa -filetype=obj -mcpu=gfx900 -o conftest.o conftest.s > /dev/null 2>&1; then
5389 gcc_cv_as_gcn_global_load_fixed=no
5391 rm -f conftest.s conftest.o conftest
5393 global_load_fixed=`if test x$gcc_cv_as_gcn_global_load_fixed = xyes; then echo 1; else echo 0; fi`
5394 AC_DEFINE_UNQUOTED(HAVE_GCN_ASM_GLOBAL_LOAD_FIXED, $global_load_fixed,
5395 [Define if your assembler has fixed global_load functions.])
5396 AC_MSG_RESULT($gcc_cv_as_gcn_global_load_fixed)
5402 # Test the LLVM assembler syntax dialect; they have made a number of
5403 # changes between LLVM 12 & 13 without any backward compatibility.
5404 gcc_GAS_CHECK_FEATURE([assembler amdgcn_target v2/3 syntax],
5405 gcc_cv_as_gcn_asm_v3_syntax,
5406 [-triple=amdgcn--amdhsa -mcpu=gfx906 -mattr=+xnack],
5407 [.amdgcn_target "amdgcn-unknown-amdhsa--gfx906+xnack"],,
5408 [AC_DEFINE(HAVE_GCN_ASM_V3_SYNTAX, 1,
5409 [Define if your assembler expects amdgcn_target gfx908+xnack syntax.])])
5410 gcc_GAS_CHECK_FEATURE([assembler amdgcn_target v4 syntax],
5411 gcc_cv_as_gcn_asm_v4_syntax,
5412 [-triple=amdgcn--amdhsa -mcpu=gfx908 -mattr=+xnack],
5413 [.amdgcn_target "amdgcn-unknown-amdhsa--gfx908:xnack+"],,
5414 [AC_DEFINE(HAVE_GCN_ASM_V4_SYNTAX, 1,
5415 [Define if your assembler expects amdgcn_target gfx908:xnack+ syntax.])])
5417 # Some attribute names changed in the move to v4 ...
5418 if test $gcc_cv_as_gcn_asm_v3_syntax = yes; then
5420 sramattr="+sram-ecc"
5422 elif test $gcc_cv_as_gcn_asm_v4_syntax = yes; then
5424 sramattr=":sramecc+"
5427 AC_MSG_ERROR([Unrecognised assembler version])
5430 # Test whether the LLVM assembler accepts -mattr=+xnack without any
5431 # diagnostic. LLVM 9 & 10 accept the option whether it makes sense or not,
5432 # LLVM 12+ throws a warning for GPUs without support.
5433 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+xnack for fiji],
5434 gcc_cv_as_gcn_xnack_ecc_fiji,
5435 [-triple=amdgcn--amdhsa -mcpu=fiji -mattr=+xnack 2>conftest.err], [],
5436 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5437 || gcc_cv_as_gcn_xnack_ecc_fiji=yes],
5438 [AC_DEFINE(HAVE_GCN_XNACK_FIJI, 1,
5439 [Define if your assembler allows -mattr=+xnack for fiji.])])
5441 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+xnack for gfx900],
5442 gcc_cv_as_gcn_xnack_ecc_gfx900,
5443 [-triple=amdgcn--amdhsa -mcpu=gfx900 -mattr=+xnack 2>conftest.err], [],
5444 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5445 || gcc_cv_as_gcn_xnack_ecc_gfx900=yes],
5446 [AC_DEFINE(HAVE_GCN_XNACK_GFX900, 1,
5447 [Define if your assembler allows -mattr=+xnack for gfx900.])])
5449 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+xnack for gfx906],
5450 gcc_cv_as_gcn_xnack_ecc_gfx906,
5451 [-triple=amdgcn--amdhsa -mcpu=gfx906 -mattr=+xnack 2>conftest.err], [],
5452 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5453 || gcc_cv_as_gcn_xnack_ecc_gfx906=yes],
5454 [AC_DEFINE(HAVE_GCN_XNACK_GFX906, 1,
5455 [Define if your assembler allows -mattr=+xnack for gfx906.])])
5457 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+xnack for gfx908],
5458 gcc_cv_as_gcn_xnack_ecc_gfx908,
5459 [-triple=amdgcn--amdhsa -mcpu=gfx908 -mattr=+xnack 2>conftest.err], [],
5460 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5461 || gcc_cv_as_gcn_xnack_ecc_gfx908=yes],
5462 [AC_DEFINE(HAVE_GCN_XNACK_GFX908, 1,
5463 [Define if your assembler allows -mattr=+xnack for gfx908.])])
5466 # Test whether the LLVM assembler accepts -mattr=+sramecc without any
5467 # diagnostic. LLVM 9 & 10 accept the option whether it makes sense or not,
5468 # (some?) LLVM 12 rejects it for all GPUs, and LLVM13 throws a warning
5469 # for GPUs without support.
5470 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=$sramopt for fiji],
5471 gcc_cv_as_gcn_sram_ecc_fiji,
5472 [-triple=amdgcn--amdhsa -mcpu=fiji -mattr=$sramopt 2>conftest.err], [],
5473 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5474 || gcc_cv_as_gcn_sram_ecc_fiji=yes],
5475 [AC_DEFINE(HAVE_GCN_SRAM_ECC_FIJI, 1,
5476 [Define if your assembler allows -mattr=+sramecc for fiji.])])
5478 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=$sramopt for gfx900],
5479 gcc_cv_as_gcn_sram_ecc_gfx900,
5480 [-triple=amdgcn--amdhsa -mcpu=gfx900 -mattr=$sramopt 2>conftest.err], [],
5481 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5482 || gcc_cv_as_gcn_sram_ecc_gfx900=yes],
5483 [AC_DEFINE(HAVE_GCN_SRAM_ECC_GFX900, 1,
5484 [Define if your assembler allows -mattr=+sramecc for gfx900.])])
5486 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=$sramopt for gfx906],
5487 gcc_cv_as_gcn_sram_ecc_gfx906,
5488 [-triple=amdgcn--amdhsa -mcpu=gfx906 -mattr=$sramopt 2>conftest.err], [],
5489 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5490 || gcc_cv_as_gcn_sram_ecc_gfx906=yes],
5491 [AC_DEFINE(HAVE_GCN_SRAM_ECC_GFX906, 1,
5492 [Define if your assembler allows -mattr=+sramecc for gfx906.])])
5494 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=$sramopt for gfx908],
5495 gcc_cv_as_gcn_sram_ecc_gfx908,
5496 [-triple=amdgcn--amdhsa -mcpu=gfx908 -mattr=$sramopt 2>conftest.err], [],
5497 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5498 || gcc_cv_as_gcn_sram_ecc_gfx908=yes],
5499 [AC_DEFINE(HAVE_GCN_SRAM_ECC_GFX908, 1,
5500 [Define if your assembler allows -mattr=+sramecc for gfx908.])])
5504 gcc_GAS_CHECK_FEATURE([assembler for arm accepts context-specific architecture extensions],
5505 gcc_cv_as_arm_option_extensions,
5506 [-march=armv8.1-m.main+mve],
5511 [AC_DEFINE(HAVE_GAS_ARM_EXTENDED_ARCH, 1,
5512 [Define if your Arm assembler permits context-specific feature extensions.])])
5515 # ??? Not all targets support dwarf2 debug_line, even within a version
5516 # of gas. Moreover, we need to emit a valid instruction to trigger any
5517 # info to the output file. So, as supported targets are added to gas 2.11,
5518 # add some instruction here to (also) show we expect this might work.
5519 # ??? Once 2.11 is released, probably need to add first known working
5520 # version to the per-target configury.
5522 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | loongarch | m32c \
5523 | m68k | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \
5524 | tilegx | tilepro | visium | xstormy16 | xtensa)
5534 if test x"$insn" != x; then
5536 .file 1 \"conftest.s\"
5539 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
5540 gcc_cv_as_dwarf2_debug_line,,
5542 [if test x$gcc_cv_objdump != x \
5543 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
5544 | grep debug_line > /dev/null 2>&1; then
5545 gcc_cv_as_dwarf2_debug_line=yes
5546 elif test x$gcc_cv_otool != x \
5547 && $gcc_cv_otool -l conftest.o 2> /dev/null \
5548 | grep debug_line > /dev/null 2>&1; then
5549 gcc_cv_as_dwarf2_debug_line=yes
5552 # The .debug_line file table must be in the exact order that
5553 # we specified the files, since these indices are also used
5554 # by DW_AT_decl_file. Approximate this test by testing if
5555 # the assembler bitches if the same index is assigned twice.
5556 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
5557 gcc_cv_as_dwarf2_file_buggy,,
5561 if test $gcc_cv_as_dwarf2_debug_line = yes \
5562 && test $gcc_cv_as_dwarf2_file_buggy = no; then
5563 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
5564 [Define if your assembler supports dwarf2 .file/.loc directives,
5565 and preserves file table indices exactly as given.])
5567 if test $gcc_cv_as_leb128 = yes; then
5569 .file 1 \"conftest.s\"
5570 .loc 1 3 0 view .LVU1
5576 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
5577 gcc_cv_as_dwarf2_debug_view,,
5579 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
5580 [Define if your assembler supports views in dwarf2 .loc directives.])])
5584 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
5585 gcc_cv_as_gdwarf2_flag,
5586 [--gdwarf2], [$insn],,
5587 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5588 [Define if your assembler supports the --gdwarf2 option.])])
5590 gcc_GAS_CHECK_FEATURE([--gdwarf-5 option],
5591 gcc_cv_as_gdwarf_5_flag,
5592 [--gdwarf-5], [$insn],
5593 [if test x$gcc_cv_objdump != x \
5594 && $gcc_cv_objdump -Wi conftest.o 2>&1 \
5595 | grep DW_TAG_compile_unit > /dev/null 2>&1; then
5596 gcc_cv_as_gdwarf_5_flag=yes;
5597 fi],[AC_DEFINE(HAVE_AS_GDWARF_5_DEBUG_FLAG, 1,
5598 [Define if your assembler supports the --gdwarf-5 option.])])
5601 win32 | pe | cygwin* | mingw32*)
5602 section_flags=\"dr\"
5603 function_type=".def foo; .scl 2; .type 32; .endef"
5606 section_flags=\"\",%progbits
5607 function_type=".type foo, %function"
5608 function_size=".size foo, .-foo";;
5610 dwarf4_debug_info_size=0x46
5611 dwarf4_high_pc_form=7
5612 dwarf4_debug_aranges_size=0x2c
5614 for dwarf4_addr_size in 8 4; do
5630 .section .debug_info,$section_flags
5632 .4byte $dwarf4_debug_info_size
5634 .4byte .Ldebug_abbrev0
5635 .byte 0x$dwarf4_addr_size
5637 .ascii \"GNU C17\\0\"
5641 .${dwarf4_addr_size}byte .Ltext0
5642 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5643 .4byte .Ldebug_line0
5649 .${dwarf4_addr_size}byte .LFB0
5650 .${dwarf4_addr_size}byte .LFE0-.LFB0
5654 .section .debug_abbrev,$section_flags
5670 .byte 0x$dwarf4_high_pc_form
5691 .byte 0x$dwarf4_high_pc_form
5697 .section .debug_aranges,$section_flags
5698 .4byte $dwarf4_debug_aranges_size
5700 .4byte .Ldebug_info0
5705 .${dwarf4_addr_size}byte .Ltext0
5706 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5707 .${dwarf4_addr_size}byte 0
5708 .${dwarf4_addr_size}byte 0
5709 .section .debug_line,$section_flags
5711 .4byte .LELT0-.LSLT0
5714 .4byte .LELTP0-.LASLTP0
5742 .byte 0x$dwarf4_line_sz
5744 .${dwarf4_addr_size}byte .LM1
5749 .byte 0x$dwarf4_line_sz
5751 .${dwarf4_addr_size}byte .LM2
5756 .byte 0x$dwarf4_line_sz
5758 .${dwarf4_addr_size}byte .Letext0
5763 .section .debug_str,$section_flags
5767 if test $dwarf4_addr_size = 4; then
5768 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 32-bit .debug_line],
5769 gcc_cv_as_debug_line_32_flag,,
5771 [dwarf4_success=yes])
5773 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 64-bit .debug_line],
5774 gcc_cv_as_debug_line_64_flag,,
5776 [dwarf4_success=yes])
5778 if test $dwarf4_success = yes; then
5780 gcc_GAS_CHECK_FEATURE([--gdwarf-4 not refusing compiler generated .debug_line],
5781 gcc_cv_as_dwarf_4_debug_line_flag,
5782 [--gdwarf-4], [$conftest_s],,
5783 [dwarf4_success=yes])
5786 dwarf4_debug_info_size=0x36
5787 dwarf4_high_pc_form=6
5788 dwarf4_debug_aranges_size=0x1c
5792 if test $dwarf4_success = yes; then
5810 gcc_GAS_CHECK_FEATURE([--gdwarf-4 with the APP marker],
5811 gcc_cv_as_dwarf_4_app_flag,
5812 [--gdwarf-4], [$conftest_s],, [dwarf4_success=yes])
5815 if test $dwarf4_success = yes; then
5825 gcc_GAS_CHECK_FEATURE([working --gdwarf-4/--gdwarf-5 for all sources],
5826 gcc_cv_as_working_gdwarf_n_flag,
5830 if test x$gcc_cv_objdump != x \
5831 && $gcc_cv_objdump -W conftest.o 2>&1 \
5832 | grep conftest.s > /dev/null 2>&1; then
5833 gcc_cv_as_working_gdwarf_n_flag=no
5835 gcc_cv_as_working_gdwarf_n_flag=yes
5837 changequote([,])dnl])
5838 if test $gcc_cv_as_working_gdwarf_n_flag = yes; then
5839 AC_DEFINE(HAVE_AS_WORKING_DWARF_N_FLAG, 1,
5840 [Define if your assembler supports --gdwarf-4/--gdwarf-5 even with
5841 compiler generated .debug_line.])
5845 gcc_GAS_CHECK_FEATURE([--gstabs option],
5846 gcc_cv_as_gstabs_flag,
5847 [--gstabs], [$insn],,
5848 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
5849 [Define if your assembler supports the --gstabs option.])])
5851 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5852 gcc_cv_as_debug_prefix_map_flag,
5853 [--debug-prefix-map /a=/b], [$insn],,
5854 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5855 [Define if your assembler supports the --debug-prefix-map option.])])
5858 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5859 gcc_cv_as_compress_debug,,,
5860 [# gas compiled without zlib cannot compress debug sections and warns
5861 # about it, but still exits successfully. So check for this, too.
5862 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5864 gcc_cv_as_compress_debug=0
5865 # Since binutils 2.26, gas supports --compress-debug-sections=type,
5866 # defaulting to the ELF gABI format.
5867 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
5869 gcc_cv_as_compress_debug=2
5870 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5871 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5872 # Before binutils 2.26, gas only supported --compress-debug-options and
5873 # emitted the traditional GNU format.
5874 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
5876 gcc_cv_as_compress_debug=1
5877 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5878 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5880 gcc_cv_as_compress_debug=0
5882 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5883 [Define to the level of your assembler's compressed debug section support.])
5884 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5885 [Define to the assembler option to enable compressed debug sections.])
5886 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5887 [Define to the assembler option to disable compressed debug sections.])
5889 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,,
5891 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5892 [Define if your assembler supports .lcomm with an alignment field.])])
5894 if test x$with_sysroot = x && test x$host = x$target \
5895 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5896 && test "$prefix" != "NONE"; then
5897 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5898 [Define to PREFIX/include if cpp should also search that directory.])
5901 # Determine the version of glibc, if any, used on the target.
5902 AC_MSG_CHECKING([for target glibc version])
5903 AC_ARG_WITH([glibc-version],
5904 [AS_HELP_STRING([--with-glibc-version=M.N],
5905 [assume GCC used with glibc version M.N or later])], [
5906 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5907 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5908 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5910 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5912 glibc_version_major=0
5913 glibc_version_minor=0
5914 [if test -f $target_header_dir/features.h \
5915 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5916 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5917 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5918 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5920 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5921 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5922 [GNU C Library major version number used on the target, or 0.])
5923 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5924 [GNU C Library minor version number used on the target, or 0.])
5926 AC_ARG_ENABLE(gnu-unique-object,
5927 [AS_HELP_STRING([--enable-gnu-unique-object],
5928 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5929 [case $enable_gnu_unique_object in
5931 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5932 Valid choices are 'yes' and 'no'.]) ;;
5934 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,,
5935 [.type foo, '$target_type_format_char'gnu_unique_object],,
5936 # We need to unquote above to to use the definition from config.gcc.
5937 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5938 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5940 if test x$enable_gnu_unique_object = xyes; then
5941 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5942 [Define if your assembler supports @gnu_unique_object.])
5945 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5946 [gcc_cv_as_line_zero],
5947 [gcc_cv_as_line_zero=no
5948 if test "x$gcc_cv_as" != x; then
5949 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5950 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5951 test "x`cat conftest.out`" = x
5953 gcc_cv_as_line_zero=yes
5955 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5956 cat conftest.s >&AS_MESSAGE_LOG_FD
5957 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5958 cat conftest.out >&AS_MESSAGE_LOG_FD
5960 rm -f conftest.o conftest.s conftest.out
5962 if test "x$gcc_cv_as_line_zero" = xyes; then
5963 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5964 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5967 AC_MSG_CHECKING(support for thin archives)
5968 thin_archive_support=no
5969 echo 'int main (void) { return 0; }' > conftest.c
5970 if ($AR --version | sed 1q | grep "GNU ar" \
5971 && $CC $CFLAGS -c conftest.c \
5972 && $AR rcT conftest.a conftest.o \
5973 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5974 thin_archive_support=yes
5976 rm -f conftest.c conftest.o conftest.a conftest
5977 AC_MSG_RESULT($thin_archive_support)
5978 AC_SUBST(thin_archive_support)
5980 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5981 gcc_cv_ld_eh_frame_hdr=no
5982 if test $in_tree_ld = yes ; then
5983 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5984 && test $in_tree_ld_is_elf = yes; then
5985 gcc_cv_ld_eh_frame_hdr=yes
5987 elif test x$gcc_cv_ld != x; then
5988 if echo "$ld_ver" | grep GNU > /dev/null; then
5989 # Check if linker supports --eh-frame-hdr option
5990 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5991 gcc_cv_ld_eh_frame_hdr=yes
5996 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5997 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5998 gcc_cv_ld_eh_frame_hdr=yes
6004 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
6005 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
6006 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
6007 [Define if your linker supports .eh_frame_hdr.])
6009 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
6011 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
6012 gcc_cv_ld_eh_frame_ciev3=no
6013 if test $in_tree_ld = yes ; then
6014 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
6015 && test $in_tree_ld_is_elf = yes; then
6016 gcc_cv_ld_eh_frame_ciev3=yes
6018 elif test x$gcc_cv_ld != x; then
6019 if echo "$ld_ver" | grep GNU > /dev/null; then
6020 gcc_cv_ld_eh_frame_ciev3=yes
6021 if test 0"$ld_date" -lt 20040513; then
6022 if test -n "$ld_date"; then
6023 # If there was date string, but was earlier than 2004-05-13, fail
6024 gcc_cv_ld_eh_frame_ciev3=no
6025 elif test "$ld_vers_major" -lt 2; then
6026 gcc_cv_ld_eh_frame_ciev3=no
6027 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
6028 gcc_cv_ld_eh_frame_ciev3=no
6034 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
6035 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
6036 gcc_cv_ld_eh_frame_ciev3=yes
6042 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
6043 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
6044 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
6045 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
6047 AC_MSG_CHECKING(linker position independent executable support)
6049 if test $in_tree_ld = yes ; then
6051 # Full PIE support on Solaris was only introduced in gld 2.26.
6052 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
6053 *) gcc_gld_pie_min_version=15 ;;
6055 if test "$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 \
6056 && test $in_tree_ld_is_elf = yes; then
6059 elif test x$gcc_cv_ld != x; then
6060 # Check if linker supports -pie option
6061 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
6065 if echo "$ld_ver" | grep GNU > /dev/null \
6066 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
6073 *-*-solaris2.1[[1-9]]*)
6074 # Solaris 11.3 added PIE support.
6075 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
6082 if test x"$gcc_cv_ld_pie" = xyes; then
6083 AC_DEFINE(HAVE_LD_PIE, 1,
6084 [Define if your linker supports PIE option.])
6086 AC_MSG_RESULT($gcc_cv_ld_pie)
6088 AC_MSG_CHECKING(linker PIE support with copy reloc)
6089 gcc_cv_ld_pie_copyreloc=no
6090 if test $gcc_cv_ld_pie = yes ; then
6091 if test $in_tree_ld = yes ; then
6092 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6093 gcc_cv_ld_pie_copyreloc=yes
6095 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6096 # Check if linker supports -pie option with copy reloc
6098 i?86-*-linux* | x86_64-*-linux*)
6099 cat > conftest1.s <<EOF
6102 .type a_glob, @object
6107 cat > conftest2.s <<EOF
6110 .type main, @function
6112 movl %eax, a_glob(%rip)
6115 .section .data.rel,"aw",@progbits
6120 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6121 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
6122 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6123 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
6124 gcc_cv_ld_pie_copyreloc=yes
6126 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
6131 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
6132 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
6133 [Define 0/1 if your linker supports -pie option with copy reloc.])
6134 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
6136 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
6137 gcc_cv_ld_eh_gc_sections=no
6138 if test $in_tree_ld = yes ; then
6139 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
6140 && test $in_tree_ld_is_elf = yes; then
6141 gcc_cv_ld_eh_gc_sections=yes
6143 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
6144 cat > conftest.s <<EOF
6147 .type _start, @function
6150 .size _start, .-_start
6151 .section .text.foo,"ax",@progbits
6152 .type foo, @function
6156 .section .gcc_except_table.foo,"a",@progbits
6159 .section .eh_frame,"a",@progbits
6162 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6163 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6164 | grep "gc-sections option ignored" > /dev/null; then
6165 gcc_cv_ld_eh_gc_sections=no
6166 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6167 | grep gcc_except_table > /dev/null; then
6168 gcc_cv_ld_eh_gc_sections=yes
6169 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
6170 if test x$gcc_cv_as_comdat_group != xyes; then
6171 gcc_cv_ld_eh_gc_sections=no
6172 cat > conftest.s <<EOF
6175 .type _start, @function
6178 .size _start, .-_start
6179 .section .gnu.linkonce.t.foo,"ax",@progbits
6180 .type foo, @function
6184 .section .gcc_except_table.foo,"a",@progbits
6187 .section .eh_frame,"a",@progbits
6190 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6191 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6192 | grep "gc-sections option ignored" > /dev/null; then
6193 gcc_cv_ld_eh_gc_sections=no
6194 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6195 | grep gcc_except_table > /dev/null; then
6196 gcc_cv_ld_eh_gc_sections=yes
6202 rm -f conftest.s conftest.o conftest
6206 # ??? This apparently exposes a binutils bug with PC-relative relocations.
6207 gcc_cv_ld_eh_gc_sections=no
6210 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
6211 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
6212 [Define if your linker supports garbage collection of
6213 sections in presence of EH frames.])
6215 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
6217 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
6218 gcc_cv_ld_eh_gc_sections_bug=no
6219 if test $in_tree_ld = yes ; then
6220 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
6221 && test $in_tree_ld_is_elf = yes; then
6222 gcc_cv_ld_eh_gc_sections_bug=yes
6224 elif test x$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
6225 gcc_cv_ld_eh_gc_sections_bug=yes
6226 cat > conftest.s <<EOF
6229 .type _start, @function
6232 .size _start, .-_start
6233 .section .text.startup.foo,"ax",@progbits
6234 .type foo, @function
6238 .section .gcc_except_table.foo,"a",@progbits
6241 .section .eh_frame,"a",@progbits
6244 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6245 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6246 | grep "gc-sections option ignored" > /dev/null; then
6248 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6249 | grep gcc_except_table > /dev/null; then
6250 gcc_cv_ld_eh_gc_sections_bug=no
6253 rm -f conftest.s conftest.o conftest
6255 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
6256 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
6257 [Define if your linker has buggy garbage collection of
6258 sections support when .text.startup.foo like sections are used.])
6260 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
6262 AC_MSG_CHECKING(linker for compressed debug sections)
6263 # gold/gld support compressed debug sections since binutils 2.19/2.21
6264 # In binutils 2.26, gld gained support for the ELF gABI format.
6265 if test $in_tree_ld = yes ; then
6266 gcc_cv_ld_compress_debug=0
6267 if test $ld_is_mold = yes; then
6268 gcc_cv_ld_compress_debug=3
6269 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6270 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
6271 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
6272 gcc_cv_ld_compress_debug=2
6273 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6274 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
6275 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
6276 gcc_cv_ld_compress_debug=3
6277 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6278 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
6279 && test $in_tree_ld_is_elf = yes; then
6280 gcc_cv_ld_compress_debug=1
6282 elif echo "$ld_ver" | grep GNU > /dev/null; then
6283 if test $ld_is_mold = yes; then
6284 gcc_cv_ld_compress_debug=3
6285 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6286 elif test "$ld_vers_major" -lt 2 \
6287 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
6288 gcc_cv_ld_compress_debug=0
6289 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
6290 gcc_cv_ld_compress_debug=1
6292 gcc_cv_ld_compress_debug=3
6293 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6295 if test $ld_is_gold = yes; then
6296 gcc_cv_ld_compress_debug=2
6297 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6303 # Introduced in Solaris 11.2.
6304 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
6305 gcc_cv_ld_compress_debug=3
6306 gcc_cv_ld_compress_debug_option="-z compress-sections"
6308 gcc_cv_ld_compress_debug=0
6312 # Assume linkers other than GNU ld don't support compessed debug
6314 gcc_cv_ld_compress_debug=0
6319 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
6320 [Define to the level of your linker's compressed debug section support.])
6321 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
6322 [Define to the linker option to enable compressed debug sections.])
6323 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
6325 if test x"$ld64_flag" = x"yes"; then
6327 # Set defaults for possibly untestable items.
6328 gcc_cv_ld64_export_dynamic=0
6329 gcc_cv_ld64_platform_version=0
6331 if test "$build" = "$host"; then
6337 # On Darwin, because of FAT library support, it is often possible to execute
6338 # exes from compatible archs even when the host differs from the build system.
6339 case "$build","$host" in
6340 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
6345 # If the configurer specified a minimum ld64 version to be supported, then use
6346 # that to determine feature support.
6347 if test x"${gcc_cv_ld64_version}" != x; then
6348 AC_MSG_CHECKING(ld64 specified version)
6349 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
6350 AC_MSG_RESULT($gcc_cv_ld64_major)
6351 if test "$gcc_cv_ld64_major" -ge 236; then
6352 gcc_cv_ld64_export_dynamic=1
6354 if test "$gcc_cv_ld64_major" -ge 512; then
6355 gcc_cv_ld64_platform_version=1
6357 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
6358 # If the version was not specified, try to find it.
6359 AC_MSG_CHECKING(linker version)
6360 if test x"${gcc_cv_ld64_version}" = x; then
6361 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
6363 AC_MSG_RESULT($gcc_cv_ld64_version)
6365 AC_MSG_CHECKING(linker for -export_dynamic support)
6366 gcc_cv_ld64_export_dynamic=1
6367 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6368 gcc_cv_ld64_export_dynamic=0
6370 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
6372 AC_MSG_CHECKING(linker for -platform_version support)
6373 gcc_cv_ld64_platform_version=1
6374 if $gcc_cv_ld -platform_version macos 10.5 0.0 < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6375 gcc_cv_ld64_platform_version=0
6377 AC_MSG_RESULT($gcc_cv_ld64_platform_version)
6380 if test x"${gcc_cv_ld64_version}" != x; then
6381 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
6382 [Define to ld64 version.])
6385 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
6386 [Define to 1 if ld64 supports '-export_dynamic'.])
6388 AC_DEFINE_UNQUOTED(LD64_HAS_PLATFORM_VERSION, $gcc_cv_ld64_platform_version,
6389 [Define to 1 if ld64 supports '-platform_version'.])
6392 if test x"$dsymutil_flag" = x"yes"; then
6394 # If the user specified a dsymutil path, then we will already have the
6395 # version string, otherwise, pick it up.
6396 if test x"$gcc_cv_dsymutil" = x; then
6397 AC_MSG_WARN([dsymutil is a required tool for this system, but not found])
6398 dsymutil_vers="tool unspecified"
6399 elif test x"$dsymutil_vers" = x; then
6400 dsymutil_vers=`$gcc_cv_dsymutil -v /dev/null 2>&1`
6403 dsymutil_temp=`echo $dsymutil_vers | sed 1q`
6404 AC_MSG_CHECKING(dsymutil version "$dsymutil_temp")
6405 if echo $dsymutil_temp | grep dwarfutils- > /dev/null; then
6406 dsymutil_kind=DWARFUTILS
6407 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*dwarfutils-\([[0-9\.]]*\).*/\1/'`
6408 elif echo $dsymutil_temp | grep clang- > /dev/null; then
6410 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*clang-\([[0-9\.]]*\).*/\1/'`
6411 elif echo $dsymutil_temp | grep 'LLVM version ' > /dev/null; then
6413 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*LLVM\ version\ \([[0-9\.]]*\).*/\1/'`
6415 dsymutil_kind=UNKNOWN
6418 dsymutil_major=`expr "$dsymutil_vers" : '\([[0-9]]*\)'`
6419 dsymutil_minor=`expr "$dsymutil_vers" : '[[0-9]]*\.\([[0-9]]*\)'`
6420 dsymutil_tiny=`expr "$dsymutil_vers" : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
6421 if test x"${dsymutil_minor}" = x; then
6424 if test x"${dsymutil_tiny}" = x; then
6427 AC_DEFINE_UNQUOTED(DSYMUTIL_VERSION, [$dsymutil_kind,${dsymutil_major},${dsymutil_minor},${dsymutil_tiny}],
6428 [Define to the dsymutil version.])
6429 AC_MSG_RESULT($dsymutil_vers : $dsymutil_kind ${dsymutil_major} ${dsymutil_minor} ${dsymutil_tiny} )
6433 win32 | pe | cygwin* | mingw32*)
6434 AC_MSG_CHECKING(broken PE linker dwarf5 support)
6435 gcc_cv_ld_broken_pe_dwarf5=yes
6436 if test $in_tree_ld = yes ; then
6437 if grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6438 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc \
6439 && grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6440 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc; then
6441 gcc_cv_ld_broken_pe_dwarf5=no
6444 if $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6445 && $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:'; then
6446 gcc_cv_ld_broken_pe_dwarf5=no
6449 if test x$gcc_cv_ld_broken_pe_dwarf5 = xyes; then
6450 AC_DEFINE(HAVE_LD_BROKEN_PE_DWARF5, 1,
6451 [Define if the PE linker has broken DWARF 5 support.])
6453 AC_MSG_RESULT($gcc_cv_ld_broken_pe_dwarf5)
6455 AC_MSG_CHECKING(PE linker --disable-dynamicbase support)
6456 gcc_cv_ld_disable_dynamicbase=no
6457 if test $in_tree_ld = yes; then
6458 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 36 -o "$gcc_cv_gld_major_version" -gt 2; then \
6459 gcc_cv_ld_disable_dynamicbase=yes
6462 if $gcc_cv_ld --help 2>&1 | grep -q 'disable\-]dynamicbase' > /dev/null; then
6463 gcc_cv_ld_disable_dynamicbase=yes
6466 if test x"$gcc_cv_ld_disable_dynamicbase" = xyes; then
6467 AC_DEFINE(HAVE_LD_PE_DISABLE_DYNAMICBASE, 1,
6468 [Define if the PE linker supports --disable-dynamicbase option.])
6470 AC_MSG_RESULT($gcc_cv_ld_disable_dynamicbase)
6478 AC_CACHE_CHECK(linker --as-needed support,
6479 gcc_cv_ld_as_needed,
6480 [gcc_cv_ld_as_needed=no
6481 gcc_cv_ld_as_needed_option='--as-needed'
6482 gcc_cv_ld_no_as_needed_option='--no-as-needed'
6483 if test $in_tree_ld = yes ; then
6484 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
6485 && test $in_tree_ld_is_elf = yes; then
6486 gcc_cv_ld_as_needed=yes
6487 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
6488 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6489 gcc_cv_ld_no_as_needed_option='--pop-state'
6492 elif test x$gcc_cv_ld != x; then
6493 # Check if linker supports --as-needed and --no-as-needed options
6494 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
6495 gcc_cv_ld_as_needed=yes
6496 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
6497 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
6498 && echo "$ld_ver" | grep GNU > /dev/null \
6499 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
6500 # Use these options only when both ld.bfd and ld.gold support
6501 # --push-state/--pop-state, which unfortunately wasn't added
6503 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6504 gcc_cv_ld_no_as_needed_option='--pop-state'
6507 case "$target:$gnu_ld" in
6509 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
6511 gcc_cv_ld_as_needed=yes
6512 gcc_cv_ld_as_needed_option="-z ignore"
6513 gcc_cv_ld_no_as_needed_option="-z record"
6517 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
6518 # dl_iterate_phdr, i.e. since Solaris 11.
6520 *-*-solaris2.1[[1-9]]*)
6522 i?86-*-* | x86_64-*-*)
6523 if echo "$ld_ver" | grep GNU > /dev/null; then
6524 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
6525 gcc_cv_ld_as_needed=no
6531 gcc_cv_ld_as_needed=no
6535 if test x"$gcc_cv_ld_as_needed" = xyes; then
6536 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
6537 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
6538 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
6539 [Define to the linker option to ignore unused dependencies.])
6540 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
6541 [Define to the linker option to keep unused dependencies.])
6544 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
6545 saved_LDFLAGS="$LDFLAGS"
6546 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
6547 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
6548 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6549 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
6551 LDFLAGS="$saved_LDFLAGS"
6552 if test "x$gcc_cv_ld_clearcap" = xyes; then
6553 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
6554 [Define if the linker supports clearing hardware capabilities via mapfile.])
6555 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
6557 AC_MSG_RESULT($gcc_cv_ld_clearcap)
6563 emul_name="-melf32lppc"
6566 emul_name="-melf32ppc"
6569 AC_CACHE_CHECK(linker .gnu.attributes long double support,
6571 [gcc_cv_ld_ppc_attr=no
6572 if test x"$ld_is_gold" = xyes; then
6573 gcc_cv_ld_ppc_attr=yes
6574 elif test $in_tree_ld = yes ; then
6575 if test "$gcc_cv_gld_major_version" -eq 2 \
6576 -a "$gcc_cv_gld_minor_version" -ge 28 \
6577 -o "$gcc_cv_gld_major_version" -gt 2; then
6578 gcc_cv_ld_ppc_attr=yes
6580 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6581 # check that merging the long double .gnu_attribute doesn't warn
6582 cat > conftest1.s <<EOF
6585 cat > conftest2.s <<EOF
6588 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6589 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6590 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
6591 && test ! -s conftest.err; then
6592 gcc_cv_ld_ppc_attr=yes
6594 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
6597 if test x$gcc_cv_ld_ppc_attr = xyes; then
6598 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
6599 [Define if your PowerPC linker has .gnu.attributes long double support.])
6604 case "$target:$tm_file" in
6605 powerpc64*-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
6608 emul_name="-melf64lppc"
6611 emul_name="-melf64ppc"
6614 emul_name="-melf64lppc_fbsd"
6617 emul_name="-melf64ppc_fbsd"
6620 AC_CACHE_CHECK(linker support for omitting dot symbols,
6621 gcc_cv_ld_no_dot_syms,
6622 [gcc_cv_ld_no_dot_syms=no
6623 if test x"$ld_is_gold" = xyes; then
6624 gcc_cv_ld_no_dot_syms=yes
6625 elif test $in_tree_ld = yes ; then
6626 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
6627 gcc_cv_ld_no_dot_syms=yes
6629 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6630 cat > conftest1.s <<EOF
6634 cat > conftest2.s <<EOF
6635 .section ".opd","aw"
6640 .quad .LEfoo,.TOC.@tocbase,0
6646 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6647 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6648 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
6649 gcc_cv_ld_no_dot_syms=yes
6651 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
6654 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
6655 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
6656 [Define if your PowerPC64 linker only needs function descriptor syms.])
6659 AC_CACHE_CHECK(linker large toc support,
6660 gcc_cv_ld_large_toc,
6661 [gcc_cv_ld_large_toc=no
6662 if test x"$ld_is_gold" = xyes; then
6663 gcc_cv_ld_large_toc=yes
6664 elif test $in_tree_ld = yes ; then
6665 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
6666 gcc_cv_ld_large_toc=yes
6668 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6669 cat > conftest.s <<EOF
6670 .section ".tbss","awT",@nobits
6676 addis 9,13,ie0@got@tprel@ha
6677 ld 9,ie0@got@tprel@l(9)
6679 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6680 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
6681 gcc_cv_ld_large_toc=yes
6683 rm -f conftest conftest.o conftest.s
6686 if test x"$gcc_cv_ld_large_toc" = xyes; then
6687 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6688 [Define if your PowerPC64 linker supports a large TOC.])
6691 AC_CACHE_CHECK(linker toc pointer alignment,
6692 gcc_cv_ld_toc_align,
6693 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
6694 cat > conftest.s <<EOF
6699 .section .data.rel.ro,"aw",@progbits
6704 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6705 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
6706 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
6708 rm -f conftest conftest.o conftest.s
6711 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
6712 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
6713 [Define to .TOC. alignment forced by your linker.])
6720 AC_CACHE_CHECK(linker large toc support,
6721 gcc_cv_ld_large_toc,
6722 [gcc_cv_ld_large_toc=no
6723 if test x$gcc_cv_as != x ; then
6724 cat > conftest.s <<EOF
6734 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
6735 gcc_cv_ld_large_toc=yes
6737 rm -f conftest conftest.o conftest.s
6740 if test x"$gcc_cv_ld_large_toc" = xyes; then
6741 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6742 [Define if your PowerPC64 linker supports a large TOC.])
6747 AC_CACHE_CHECK(linker --build-id support,
6749 [gcc_cv_ld_buildid=no
6750 if test $in_tree_ld = yes ; then
6751 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6752 "$gcc_cv_gld_minor_version" -ge 18 -o \
6753 "$gcc_cv_gld_major_version" -gt 2 \
6754 && test $in_tree_ld_is_elf = yes; then
6755 gcc_cv_ld_buildid=yes
6757 elif test x$gcc_cv_ld != x; then
6758 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
6759 gcc_cv_ld_buildid=yes
6762 if test x"$gcc_cv_ld_buildid" = xyes; then
6763 AC_DEFINE(HAVE_LD_BUILDID, 1,
6764 [Define if your linker supports --build-id.])
6767 AC_ARG_ENABLE(linker-build-id,
6768 [AS_HELP_STRING([--enable-linker-build-id],
6769 [compiler will always pass --build-id to linker])],
6771 enable_linker_build_id=no)
6773 if test x"$enable_linker_build_id" = xyes; then
6774 if test x"$gcc_cv_ld_buildid" = xyes; then
6775 AC_DEFINE(ENABLE_LD_BUILDID, 1,
6776 [Define if gcc should always pass --build-id to linker.])
6778 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
6782 # In binutils 2.21, GNU ld gained support for new emulations fully
6783 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
6784 AC_CACHE_CHECK(linker *_sol2 emulation support,
6785 gcc_cv_ld_sol2_emulation,
6786 [gcc_cv_ld_sol2_emulation=no
6787 if test $in_tree_ld = yes ; then
6788 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6789 "$gcc_cv_gld_minor_version" -ge 21 -o \
6790 "$gcc_cv_gld_major_version" -gt 2 \
6791 && test $in_tree_ld_is_elf = yes; then
6792 gcc_cv_ld_sol2_emulation=yes
6794 elif test x$gcc_cv_ld != x; then
6795 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
6796 grep _sol2 > /dev/null; then
6797 gcc_cv_ld_sol2_emulation=yes
6800 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
6801 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
6802 [Define if your linker supports the *_sol2 emulations.])
6805 AC_CACHE_CHECK(linker --sysroot support,
6807 [gcc_cv_ld_sysroot=no
6808 if test $in_tree_ld = yes ; then
6809 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
6810 gcc_cv_ld_sysroot=yes
6812 elif test x$gcc_cv_ld != x; then
6813 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
6814 gcc_cv_ld_sysroot=yes
6817 if test x"$gcc_cv_ld_sysroot" = xyes; then
6818 AC_DEFINE(HAVE_LD_SYSROOT, 1,
6819 [Define if your linker supports --sysroot.])
6824 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
6825 AC_CACHE_CHECK([system-provided CRTs on Solaris],
6826 gcc_cv_solaris_crts,
6827 [gcc_cv_solaris_crts=no
6828 if test x$host != x$target; then
6829 if test "x$with_sysroot" = xyes; then
6830 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
6832 target_sysroot="${with_sysroot}"
6835 target_libdir="$target_sysroot/usr/lib"
6836 # At the time they were added, gcrt1.o became a symlink for backwards
6837 # compatibility on x86, while crt1.o was added on sparc, so check for that.
6839 i?86-*-solaris2* | x86_64-*-solaris2*)
6840 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
6843 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
6848 if test x$gcc_cv_solaris_crts = xyes; then
6849 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
6850 [Define if the system-provided CRTs are present on Solaris.])
6853 AC_ARG_ENABLE(libssp,
6854 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
6855 [case "${enableval}" in
6859 AC_MSG_ERROR([unknown libssp setting $enableval])
6863 # Test for stack protector support in target C library.
6864 AC_CACHE_CHECK(__stack_chk_fail in target C library,
6865 gcc_cv_libc_provides_ssp,
6866 [gcc_cv_libc_provides_ssp=no
6867 if test "x$enable_libssp" = "xno"; then
6868 gcc_cv_libc_provides_ssp=yes
6869 elif test "x$enable_libssp" = "xyes"; then
6870 gcc_cv_libc_provides_ssp=no
6874 # All versions of musl provide stack protector
6875 gcc_cv_libc_provides_ssp=yes;;
6876 *-*-linux* | *-*-kfreebsd*-gnu)
6877 # glibc 2.4 and later provides __stack_chk_fail and
6878 # either __stack_chk_guard, or TLS access to stack guard canary.
6879 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
6880 [if test -f $target_header_dir/features.h \
6881 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
6882 $target_header_dir/features.h > /dev/null; then
6883 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
6884 $target_header_dir/features.h > /dev/null && \
6885 test -f $target_header_dir/bits/uClibc_config.h && \
6886 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
6887 $target_header_dir/bits/uClibc_config.h > /dev/null; then
6888 gcc_cv_libc_provides_ssp=yes
6890 # all versions of Bionic support stack protector
6891 elif test -f $target_header_dir/sys/cdefs.h \
6892 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
6893 $target_header_dir/sys/cdefs.h > /dev/null; then
6894 gcc_cv_libc_provides_ssp=yes
6898 # Avoid complicated tests (see
6899 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
6900 # simply assert that glibc does provide this, which is true for all
6901 # realistically usable GNU/Hurd configurations.
6902 # All supported versions of musl provide it as well
6903 gcc_cv_libc_provides_ssp=yes;;
6904 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
6905 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
6906 [echo "no __stack_chk_fail on this target"])
6908 *) gcc_cv_libc_provides_ssp=no ;;
6912 if test x$gcc_cv_libc_provides_ssp = xyes; then
6913 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
6914 [Define if your target C library provides stack protector support])
6917 # Check whether --enable-default-ssp was given.
6918 AC_ARG_ENABLE(default-ssp,
6919 [AS_HELP_STRING([--enable-default-ssp],
6920 [enable Stack Smashing Protection as default])],[
6921 if test x$gcc_cv_libc_provides_ssp = xyes; then
6923 ia64*-*-*) enable_default_ssp=no ;;
6924 *) enable_default_ssp=$enableval ;;
6927 enable_default_ssp=no
6929 enable_default_ssp=no)
6930 if test x$enable_default_ssp = xyes ; then
6931 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
6932 [Define if your target supports default stack protector and it is enabled.])
6934 AC_SUBST([enable_default_ssp])
6936 # Test for <sys/sdt.h> on the target.
6937 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
6938 AC_MSG_CHECKING(sys/sdt.h in the target C library)
6940 if test -f $target_header_dir/sys/sdt.h; then
6942 AC_DEFINE(HAVE_SYS_SDT_H, 1,
6943 [Define if your target C library provides sys/sdt.h])
6945 AC_MSG_RESULT($have_sys_sdt_h)
6947 # Check if TFmode long double should be used by default or not.
6948 # Some glibc targets used DFmode long double, but with glibc 2.4
6949 # and later they can use TFmode.
6951 powerpc*-*-linux* | \
6955 AC_ARG_WITH(long-double-128,
6956 [AS_HELP_STRING([--with-long-double-128],
6957 [use 128-bit long double by default])],
6958 gcc_cv_target_ldbl128="$with_long_double_128", [
6960 s390*-*-linux-musl*)
6961 gcc_cv_target_ldbl128=yes
6963 powerpc*-*-linux-musl*)
6964 gcc_cv_target_ldbl128=no
6967 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6968 [gcc_cv_target_ldbl128=no
6969 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6970 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6971 && gcc_cv_target_ldbl128=yes
6979 if test x$gcc_cv_target_ldbl128 = xyes; then
6980 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6981 [Define if TFmode long double should be the default])
6984 # Check if TFmode long double target should use the IBM extended double or IEEE
6985 # 128-bit floating point formats if long doubles are 128-bits long. The long
6986 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6987 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6989 AC_ARG_WITH([long-double-format],
6990 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6991 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6992 case "$target:$with_long_double_format" in
6993 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6996 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6997 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6999 power7 | power8 | power9 | power1*)
7003 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
7004 supported if the default cpu is power7 or newer])
7005 with_long_double_format=""
7009 powerpc64*-*-linux*:*)
7010 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
7011 with_long_double_format=""
7014 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
7015 on 64-bit PowerPC VSX Linux systems])
7016 with_long_double_format=""
7021 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
7022 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
7023 gcc_cv_libc_provides_hwcap_in_tcb=no
7026 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
7029 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
7030 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
7031 [Define if your target C Library provides the AT_HWCAP value in the TCB])
7034 # Check if the target LIBC handles PT_GNU_STACK.
7035 gcc_cv_libc_gnustack=unknown
7037 mips*-*-linux-musl*)
7038 gcc_cv_libc_gnustack=yes
7041 GCC_GLIBC_VERSION_GTE_IFELSE([2], [31], [gcc_cv_libc_gnustack=yes], )
7044 if test x$gcc_cv_libc_gnustack = xyes; then
7045 AC_DEFINE(TARGET_LIBC_GNUSTACK, 1,
7046 [Define if your target C Library properly handles PT_GNU_STACK])
7049 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
7050 gcc_cv_target_dl_iterate_phdr=unknown
7053 # <link.h> needs both a dl_iterate_phdr declaration and support for
7054 # compilation with largefile support.
7055 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
7056 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
7057 gcc_cv_target_dl_iterate_phdr=yes
7059 gcc_cv_target_dl_iterate_phdr=no
7062 *-*-dragonfly* | *-*-freebsd*)
7063 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
7064 gcc_cv_target_dl_iterate_phdr=yes
7066 gcc_cv_target_dl_iterate_phdr=no
7070 gcc_cv_target_dl_iterate_phdr=yes
7073 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
7074 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
7075 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
7076 [Define if your target C library provides the `dl_iterate_phdr' function.])
7078 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
7080 # We no longer support different GC mechanisms. Emit an error if
7081 # the user configures with --with-gc.
7083 [AS_HELP_STRING([--with-gc={page,zone}],
7084 [this option is not supported anymore. It used to choose
7085 the garbage collection mechanism to use with the compiler])],
7086 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
7089 # Libraries to use on the host. This will normally be set by the top
7090 # level Makefile. Here we simply capture the value for our Makefile.
7091 if test -z "${HOST_LIBS+set}"; then
7096 # Use the system's zlib library.
7099 dnl Very limited version of automake's enable-maintainer-mode
7101 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
7102 dnl maintainer-mode is disabled by default
7103 AC_ARG_ENABLE(maintainer-mode,
7104 [AS_HELP_STRING([--enable-maintainer-mode],
7105 [enable make rules and dependencies not useful
7106 (and sometimes confusing) to the casual installer])],
7107 maintainer_mode=$enableval,
7110 AC_MSG_RESULT($maintainer_mode)
7112 if test "$maintainer_mode" = "yes"; then
7119 dnl Variables for tags utilities; copied from automake 1.16.4+'s init.m4
7120 if test -z "$CTAGS"; then
7124 if test -z "$ETAGS"; then
7128 if test -z "$CSCOPE"; then
7133 dnl Whether to prevent multiple front-ends from linking at the same time
7135 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
7136 AC_ARG_ENABLE(link-mutex,
7137 [AS_HELP_STRING([--enable-link-mutex],
7138 [avoid linking multiple front-ends at once to avoid thrashing
7139 on the build machine])],
7140 do_link_mutex=$enableval,
7142 AC_MSG_RESULT($do_link_mutex)
7144 if test "$do_link_mutex" = "yes"; then
7149 AC_SUBST(DO_LINK_MUTEX)
7151 dnl Whether to prevent multiple GCC front-ends from linking at the same time
7153 AC_MSG_CHECKING([whether to serialize linking of multiple front-ends])
7154 AC_ARG_ENABLE(link-serialization,
7155 [AS_HELP_STRING([--enable-link-serialization],
7156 [avoid linking multiple GCC front-ends at once using make
7157 dependencies to avoid thrashing on the build machine])],
7158 do_link_serialization=$enableval,
7159 do_link_serialization=no)
7160 AC_MSG_RESULT($do_link_serialization)
7162 case "$do_link_serialization" in
7164 DO_LINK_SERIALIZATION=1;;
7165 [[1-9]] | [[1-9]][[0-9]] | [[1-9]][[0-9]][[0-9]])
7166 DO_LINK_SERIALIZATION=$do_link_serialization;;
7168 DO_LINK_SERIALIZATION=;;
7170 AC_MSG_ERROR(bad value ${do_link_serialization} given for --enable-link-serialization) ;;
7172 AC_SUBST(DO_LINK_SERIALIZATION)
7178 # Make empty files to contain the specs and options for each language.
7179 # Then add #include lines to for a compiler that has specs and/or options.
7185 # These (without "all_") are set in each config-lang.in.
7186 # `language' must be a single word so is spelled singularly.
7189 all_outputs='Makefile'
7190 # List of language configure and makefile fragments.
7191 all_lang_configurefrags=
7193 # Additional files for gengtype
7194 all_gtfiles="$target_gtfiles"
7196 # These are the languages that are set in --enable-languages,
7197 # and are available in the GCC tree.
7198 all_selected_languages=
7200 # Add the language fragments.
7201 # Languages are added via two mechanisms. Some information must be
7202 # recorded in makefile variables, these are defined in config-lang.in.
7203 # We accumulate them and plug them into the main Makefile.
7204 # The other mechanism is a set of hooks for each of the main targets
7205 # like `clean', `install', etc.
7207 language_hooks="Make-hooks"
7209 for lang in ${srcdir}/*/config-lang.in
7212 test "$lang" = "${srcdir}/*/config-lang.in" && continue
7214 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
7215 if test "x$lang_alias" = x
7217 echo "$lang doesn't set \$language." 1>&2
7220 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
7221 subdirs="$subdirs $subdir"
7223 # $gcc_subdir is where the gcc integration files are to be found
7224 # for a language, both for internal compiler purposes (compiler
7225 # sources implementing front-end to GCC tree converters), and for
7226 # build infrastructure purposes (Make-lang.in, etc.)
7228 # This will be <subdir> (relative to $srcdir) if a line like
7229 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
7230 # is found in <langdir>/config-lang.in, and will remain <langdir>
7233 # Except for the language alias (fetched above), the regular
7234 # "config-lang.in" contents are always retrieved from $gcc_subdir,
7235 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
7236 # only this and the language alias.
7238 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
7239 if [ "$gcc_subdir" = "" ]; then
7240 gcc_subdir="$subdir"
7243 case ",$enable_languages," in
7245 all_selected_languages="$all_selected_languages $lang_alias"
7246 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
7247 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
7259 . ${srcdir}/$gcc_subdir/config-lang.in
7260 if test "x$language" = x
7262 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
7267 case ",$enable_languages," in
7270 for i in $subdir_requires; do
7271 test -f "${srcdir}/$i/config-lang.in" && continue
7279 all_lang_configurefrags="$all_lang_configurefrags \$(srcdir)/$gcc_subdir/config-lang.in"
7280 if test "x$language" = xc && test -n "$all_lang_makefrags"; then
7281 # Put c/Make-lang.in fragment first to match serialization languages order.
7282 all_lang_makefrags="\$(srcdir)/$gcc_subdir/Make-lang.in $all_lang_makefrags"
7284 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
7286 if test -f $srcdir/$gcc_subdir/lang.opt; then
7287 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
7288 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
7290 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
7291 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
7293 all_languages="$all_languages $language"
7294 all_compilers="$all_compilers $compilers"
7295 all_outputs="$all_outputs $outputs"
7296 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
7297 case ",$enable_languages," in
7299 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
7301 AC_SUBST(enable_lto)
7308 for language in $all_selected_languages
7310 check_languages="$check_languages check-$language"
7314 for language in $all_selected_languages
7316 selftest_languages="$selftest_languages selftest-$language"
7319 # We link each language in with a set of hooks, reached indirectly via
7320 # lang.${target}. Only do so for selected languages.
7324 target_list="all.cross start.encap rest.encap tags \
7325 install-common install-man install-info install-dvi install-pdf \
7326 install-html dvi pdf html uninstall info man srcextra srcman srcinfo \
7327 mostlyclean clean distclean maintainer-clean install-plugin"
7329 for t in $target_list
7332 for lang in $all_selected_languages
7336 echo "lang.$t: $x" >> Make-hooks
7339 echo "ifeq (\$(DO_LINK_SERIALIZATION),)" >> Make-hooks
7340 echo "SERIAL_LIST =" >> Make-hooks
7341 echo else >> Make-hooks
7345 serialization_languages=c
7346 for lang in $all_selected_languages
7348 test $lang = c && continue
7349 if test $lang = lto; then
7350 serialization_languages="$serialization_languages lto1 lto2"
7352 serialization_languages="$serialization_languages $lang"
7355 for lang in $serialization_languages
7357 test $lang = c && continue
7358 lang_cnt=`expr $lang_cnt + 1`
7359 lang_list=" $prev$lang_list"
7362 echo "SERIAL_LIST = \$(wordlist \$(DO_LINK_SERIALIZATION),$lang_cnt,$lang_list)" >> Make-hooks
7363 echo endif >> Make-hooks
7364 echo "SERIAL_COUNT = `expr $lang_cnt + 1`" >> Make-hooks
7365 echo "INDEX.c = 0" >> Make-hooks
7367 for lang in $serialization_languages
7369 test $lang = c && continue
7370 echo "$lang.prev = \$(if \$(word $lang_cnt,\$(SERIAL_LIST)),\$(\$(word $lang_cnt,\$(SERIAL_LIST)).serial))" >> Make-hooks
7371 echo "INDEX.$lang = $lang_idx" >> Make-hooks
7372 lang_cnt=`expr $lang_cnt - 1`
7373 lang_idx=`expr $lang_idx + 1`
7377 # Option include files
7380 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
7381 option_includes="option-includes.mk"
7382 AC_SUBST_FILE(option_includes)
7390 echo "dir ." > .gdbinit
7391 echo "dir ${srcdir}" >> .gdbinit
7392 if test x$gdb_needs_out_file_path = xyes
7394 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
7396 if test "x$subdirs" != x; then
7399 echo "dir ${srcdir}/$s" >> .gdbinit
7402 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
7403 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
7405 # Put a breakpoint on __asan_report_error to help with debugging buffer
7408 *-fsanitize=address*)
7409 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
7413 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
7414 AC_SUBST(gcc_tooldir)
7417 # Find a directory in which to install a shared libgcc.
7419 AC_ARG_ENABLE(version-specific-runtime-libs,
7420 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
7421 [specify that runtime libraries should be
7422 installed in a compiler-specific directory])])
7424 # Substitute configuration variables
7427 AC_SUBST(all_compilers)
7428 AC_SUBST(all_gtfiles)
7429 AC_SUBST(all_lang_configurefrags)
7430 AC_SUBST(all_lang_makefrags)
7431 AC_SUBST(all_languages)
7432 AC_SUBST(all_selected_languages)
7433 AC_SUBST(build_exeext)
7434 AC_SUBST(build_install_headers_dir)
7435 AC_SUBST(build_xm_file_list)
7436 AC_SUBST(build_xm_include_list)
7437 AC_SUBST(build_xm_defines)
7438 AC_SUBST(build_file_translate)
7439 AC_SUBST(check_languages)
7440 AC_SUBST(selftest_languages)
7441 AC_SUBST(cpp_install_dir)
7442 AC_SUBST(xmake_file)
7443 AC_SUBST(tmake_file)
7444 AC_SUBST(TM_ENDIAN_CONFIG)
7445 AC_SUBST(TM_MULTILIB_CONFIG)
7446 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
7447 AC_SUBST(extra_gcc_objs)
7448 AC_SUBST(user_headers_inc_next_pre)
7449 AC_SUBST(user_headers_inc_next_post)
7450 AC_SUBST(extra_headers_list)
7451 AC_SUBST(extra_objs)
7452 AC_SUBST(extra_programs)
7453 AC_SUBST(float_h_file)
7454 AC_SUBST(gcc_config_arguments)
7455 AC_SUBST(gcc_gxx_include_dir)
7456 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
7457 AC_SUBST(gcc_gxx_libcxx_include_dir)
7458 AC_SUBST(gcc_gxx_libcxx_include_dir_add_sysroot)
7459 AC_SUBST(host_exeext)
7460 AC_SUBST(host_xm_file_list)
7461 AC_SUBST(host_xm_include_list)
7462 AC_SUBST(host_xm_defines)
7463 AC_SUBST(out_host_hook_obj)
7465 AC_SUBST(lang_opt_files)
7466 AC_SUBST(lang_specs_files)
7467 AC_SUBST(lang_tree_files)
7468 AC_SUBST(local_prefix)
7470 AC_SUBST(objc_boehm_gc)
7472 AC_SUBST(out_object_file)
7473 AC_SUBST(common_out_file)
7474 AC_SUBST(common_out_object_file)
7475 AC_SUBST(tm_file_list)
7476 AC_SUBST(tm_include_list)
7477 AC_SUBST(tm_defines)
7478 AC_SUBST(tm_p_file_list)
7479 AC_SUBST(tm_p_include_list)
7480 AC_SUBST(tm_d_file_list)
7481 AC_SUBST(tm_d_include_list)
7482 AC_SUBST(xm_file_list)
7483 AC_SUBST(xm_include_list)
7484 AC_SUBST(xm_defines)
7485 AC_SUBST(use_gcc_stdint)
7486 AC_SUBST(c_target_objs)
7487 AC_SUBST(cxx_target_objs)
7488 AC_SUBST(fortran_target_objs)
7489 AC_SUBST(d_target_objs)
7490 AC_SUBST(target_cpu_default)
7492 AC_SUBST_FILE(language_hooks)
7495 if test x${build} = x${host} ; then
7496 if test x${host} = x${target} ; then
7497 echo "Links are now set up to build a native compiler for ${target}." 1>&2
7499 echo "Links are now set up to build a cross-compiler" 1>&2
7500 echo " from ${host} to ${target}." 1>&2
7503 if test x${host} = x${target} ; then
7504 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
7505 echo " for ${target}." 1>&2
7507 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
7508 echo " from ${host} to ${target}." 1>&2
7512 AC_ARG_VAR(GMPLIBS,[How to link GMP])
7513 AC_ARG_VAR(GMPINC,[How to find GMP include files])
7515 AC_ARG_VAR(ISLLIBS,[How to link isl])
7516 AC_ARG_VAR(ISLINC,[How to find isl include files])
7517 if test "x${ISLLIBS}" != "x" ; then
7518 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
7522 AC_SUBST(pluginlibs)
7523 AC_SUBST(enable_plugin)
7524 if test x"$enable_plugin" = x"yes"; then
7525 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
7529 # Enable --enable-host-shared
7530 AC_ARG_ENABLE(host-shared,
7531 [AS_HELP_STRING([--enable-host-shared],
7532 [build host code as shared libraries])],
7533 [PICFLAG=-fPIC], [PICFLAG=])
7534 AC_SUBST(enable_host_shared)
7538 AC_ARG_ENABLE(libquadmath-support,
7539 [AS_HELP_STRING([--disable-libquadmath-support],
7540 [disable libquadmath support for Fortran])],
7541 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
7542 ENABLE_LIBQUADMATH_SUPPORT=yes)
7543 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
7544 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
7545 [Define to 1 to enable libquadmath support])
7549 # Specify what hash style to use by default.
7550 AC_ARG_WITH([linker-hash-style],
7551 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
7552 [specify the linker hash style])],
7553 [case x"$withval" in
7555 LINKER_HASH_STYLE=sysv
7558 LINKER_HASH_STYLE=gnu
7561 LINKER_HASH_STYLE=both
7564 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
7567 [LINKER_HASH_STYLE=''])
7568 if test x"${LINKER_HASH_STYLE}" != x; then
7569 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
7570 [The linker hash style])
7573 # Specify what should be the default of -fdiagnostics-color option.
7574 AC_ARG_WITH([diagnostics-color],
7575 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
7576 [specify the default of -fdiagnostics-color option
7577 auto-if-env stands for -fdiagnostics-color=auto if
7578 GCC_COLOR environment variable is present and
7579 -fdiagnostics-color=never otherwise])],
7580 [case x"$withval" in
7582 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
7585 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
7588 DIAGNOSTICS_COLOR_DEFAULT=-1
7591 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
7594 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
7597 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
7598 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
7599 [The default for -fdiagnostics-color option])
7601 # Specify what should be the default of -fdiagnostics-urls option.
7602 AC_ARG_WITH([diagnostics-urls],
7603 [AC_HELP_STRING([--with-diagnostics-urls={never,auto,auto-if-env,always}],
7604 [specify the default of -fdiagnostics-urls option
7605 auto-if-env stands for -fdiagnostics-urls=auto if
7606 GCC_URLS or TERM_URLS environment variable is present and
7607 -fdiagnostics-urls=never otherwise])],
7608 [case x"$withval" in
7610 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_NO
7613 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO
7616 DIAGNOSTICS_URLS_DEFAULT=-1
7619 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_YES
7622 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-urls])
7625 [DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO])
7626 AC_DEFINE_UNQUOTED(DIAGNOSTICS_URLS_DEFAULT, $DIAGNOSTICS_URLS_DEFAULT,
7627 [The default for -fdiagnostics-urls option])
7629 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
7630 # of jit/jit-playback.cc.
7631 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
7632 echo "gcc_driver_version: ${gcc_driver_version}"
7633 cat > gcc-driver-name.h <<EOF
7634 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
7637 # Check whether --enable-default-pie was given.
7638 AC_ARG_ENABLE(default-pie,
7639 [AS_HELP_STRING([--enable-default-pie],
7640 [enable Position Independent Executable as default])],
7641 enable_default_pie=$enableval,
7642 enable_default_pie=no)
7643 if test x$enable_default_pie = xyes ; then
7644 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
7645 [Define if your target supports default PIE and it is enabled.])
7647 AC_SUBST([enable_default_pie])
7649 # Check if -fno-PIE works.
7650 AC_CACHE_CHECK([for -fno-PIE option],
7652 [saved_CXXFLAGS="$CXXFLAGS"
7653 CXXFLAGS="$CXXFLAGS -fno-PIE"
7654 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7655 [gcc_cv_c_no_fpie=yes],
7656 [gcc_cv_c_no_fpie=no])
7657 CXXFLAGS="$saved_CXXFLAGS"])
7658 if test "$gcc_cv_c_no_fpie" = "yes"; then
7659 NO_PIE_CFLAGS="-fno-PIE"
7661 AC_SUBST([NO_PIE_CFLAGS])
7663 # Check if -no-pie works.
7664 AC_CACHE_CHECK([for -no-pie option],
7666 [saved_LDFLAGS="$LDFLAGS"
7667 LDFLAGS="$LDFLAGS -no-pie"
7668 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7669 [gcc_cv_no_pie=yes],
7671 LDFLAGS="$saved_LDFLAGS"])
7672 if test "$gcc_cv_no_pie" = "yes"; then
7673 NO_PIE_FLAG="-no-pie"
7675 AC_SUBST([NO_PIE_FLAG])
7677 # Enable Intel CET on Intel CET enabled host if jit is enabled.
7678 GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
7679 case x$enable_languages in
7686 AC_SUBST(CET_HOST_FLAGS)
7688 # Check linker supports '-z bndplt'
7689 ld_bndplt_support=no
7690 AC_MSG_CHECKING(linker -z bndplt option)
7691 if test x"$ld_is_gold" = xno; then
7692 if test $in_tree_ld = yes ; then
7693 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7694 ld_bndplt_support=yes
7696 elif test x$gcc_cv_ld != x; then
7697 # Check if linker supports -a bndplt option
7698 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
7699 ld_bndplt_support=yes
7703 if test x"$ld_bndplt_support" = xyes; then
7704 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
7705 [Define if your linker supports -z bndplt])
7707 AC_MSG_RESULT($ld_bndplt_support)
7709 # Check linker supports '--push-state'/'--pop-state'
7710 ld_pushpopstate_support=no
7711 AC_MSG_CHECKING(linker --push-state/--pop-state options)
7712 if test x"$ld_is_gold" = xno; then
7713 if test $in_tree_ld = yes ; then
7714 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7715 ld_pushpopstate_support=yes
7717 elif test x$gcc_cv_ld != x; then
7718 # Check if linker supports --push-state/--pop-state options
7719 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
7720 ld_pushpopstate_support=yes
7724 if test x"$ld_pushpopstate_support" = xyes; then
7725 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
7726 [Define if your linker supports --push-state/--pop-state])
7728 AC_MSG_RESULT($ld_pushpopstate_support)
7730 # On s390, float_t has historically been statically defined as double for no
7731 # good reason. To comply with the C standard in the light of this definition,
7732 # gcc has evaluated float expressions in double precision when in
7733 # standards-compatible mode or when given -fexcess-precision=standard. To enable
7734 # a smooth transition towards the new model used by most architectures, where
7735 # gcc describes its behavior via the macro __FLT_EVAL_METHOD__ and glibc derives
7736 # float_t from that, this behavior can be configured with
7737 # --enable-s390-excess-float-precision. When given as enabled, that flag selects
7738 # the old model. When omitted, native builds and cross compiles that have target
7739 # libc headers will detect whether libc clamps float_t to double and in that
7740 # case maintain the old model. Otherwise, they will default to the new model.
7741 AC_ARG_ENABLE(s390-excess-float-precision,
7742 [AS_HELP_STRING([--enable-s390-excess-float-precision],
7743 [on s390 targets, evaluate float with double precision
7744 when in standards-conforming mode])],
7745 [],[enable_s390_excess_float_precision=auto])
7749 if test x"$enable_s390_excess_float_precision" = xauto; then
7750 # Can we autodetect the behavior of the target libc?
7751 if test "$target" = "$host" -a "$host" = "$build"; then
7752 enable_s390_excess_float_precision=autodetect
7753 elif test "x$with_headers" != xno; then
7754 # cross build. are target headers available?
7755 # carefully coerce the build-system compiler to use target headers
7756 saved_CXXFLAGS="$CXXFLAGS"
7757 fixed_XGCC_FLAGS_FOR_TARGET=`echo "$XGCC_FLAGS_FOR_TARGET" | sed 's/-B/-idirafter/g'`
7758 CROSS_TEST_CXXFLAGS="-nostdinc $fixed_XGCC_FLAGS_FOR_TARGET"
7759 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7760 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7762 ]])], [enable_s390_excess_float_precision=autodetect], [])
7763 CXXFLAGS="$saved_CXXFLAGS"
7766 if test x"$enable_s390_excess_float_precision" = xautodetect; then
7767 saved_CXXFLAGS="$CXXFLAGS"
7768 if ! test "$target" = "$host" -a "$host" = "$build"; then
7769 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7770 unset CROSS_TEST_CXXFLAGS
7772 AC_CACHE_CHECK([for glibc clamping float_t to double],
7773 gcc_cv_float_t_clamped_to_double, [
7774 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7775 #define __FLT_EVAL_METHOD__ 0
7777 int dummy[sizeof(float_t) == sizeof(double) ? 1 : -1];
7779 [gcc_cv_float_t_clamped_to_double=yes],
7780 [gcc_cv_float_t_clamped_to_double=no])])
7781 CXXFLAGS="$saved_CXXFLAGS"
7782 enable_s390_excess_float_precision="$gcc_cv_float_t_clamped_to_double"
7784 # no way to detect behavior of target libc, default to new model
7785 enable_s390_excess_float_precision=no
7789 GCC_TARGET_TEMPLATE(ENABLE_S390_EXCESS_FLOAT_PRECISION)
7790 if test x"$enable_s390_excess_float_precision" = xyes; then
7791 AC_DEFINE(ENABLE_S390_EXCESS_FLOAT_PRECISION, 1,
7792 [Define to enable evaluating float expressions with double precision in
7793 standards-compatible mode on s390 targets.])
7798 # Configure the subdirectories
7799 # AC_CONFIG_SUBDIRS($subdirs)
7801 # Create the Makefile
7802 # and configure language subdirectories
7803 AC_CONFIG_FILES($all_outputs)
7805 AC_CONFIG_COMMANDS([default],
7807 case ${CONFIG_HEADERS} in
7808 *auto-host.h:config.in*)
7811 # Make sure all the subdirs exist.
7812 for d in $subdirs doc build common c-family
7814 test -d $d || mkdir $d
7817 [subdirs='$subdirs'])