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 -Wno-error=format-diag $wf_opt])),
578 ACX_PROG_CC_WARNING_OPTS(
579 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes ],
580 [-Wno-error=format-diag])), [c_loose_warn])
581 ACX_PROG_CXX_WARNING_OPTS(
582 m4_quote(m4_do([-Wmissing-format-attribute ],
583 [-Woverloaded-virtual])), [strict_warn])
584 ACX_PROG_CC_WARNING_OPTS(
585 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
586 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
587 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
588 [-Wno-overlength-strings])), [strict_warn])
589 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
591 # The above macros do nothing if the compiler is not GCC. However, the
592 # Makefile has more goo to add other flags, so these variables are used
593 # to enable warnings only for GCC.
596 if test "x$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 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
956 enable_fixed_point=no
960 AC_SUBST(enable_fixed_point)
962 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
963 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
964 [Define to 1 to enable fixed-point arithmetic extension to C.])
967 # Pass with no value to take the default
968 # Pass with a value to specify a thread package
969 AC_ARG_ENABLE(threads,
970 [AS_HELP_STRING([[--enable-threads[=LIB]]],
971 [enable thread usage for target GCC,
972 using LIB thread package])],,
976 [AS_HELP_STRING([--enable-tls],
977 [enable or disable generation of tls code
978 overriding the assembler check for tls support])],
982 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
983 Valid choices are 'yes' and 'no'.]) ;;
987 AC_ARG_ENABLE(vtable-verify,
988 [AS_HELP_STRING([--enable-vtable-verify],
989 [enable vtable verification feature])],,
990 [enable_vtable_verify=no])
991 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
992 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
993 [Define 0/1 if vtable verification feature is enabled.])
995 AC_ARG_ENABLE(analyzer,
996 [AS_HELP_STRING([--disable-analyzer],
997 [disable -fanalyzer static analyzer])],
998 if test x$enable_analyzer = xno; then
1004 AC_DEFINE_UNQUOTED(ENABLE_ANALYZER, $analyzer,
1005 [Define 0/1 if static analyzer feature is enabled.])
1007 AC_ARG_ENABLE(objc-gc,
1008 [AS_HELP_STRING([--enable-objc-gc],
1009 [enable the use of Boehm's garbage collector with
1010 the GNU Objective-C runtime])],
1011 if test x$enable_objc_gc = xno; then
1019 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
1020 dwarf2="$with_dwarf2",
1023 AC_ARG_ENABLE(shared,
1024 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
1026 case $enable_shared in
1030 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
1031 for pkg in $enableval; do
1032 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
1039 ], [enable_shared=yes])
1040 AC_SUBST(enable_shared)
1043 [ --disable-gcov don't provide libgcov and related host tools],
1044 [], [enable_gcov=yes])
1045 AC_SUBST(enable_gcov)
1048 [AS_HELP_STRING([--with-specs=SPECS],
1049 [add SPECS to driver command-line processing])],
1050 [CONFIGURE_SPECS=$withval],
1053 AC_SUBST(CONFIGURE_SPECS)
1055 ACX_PKGVERSION([GCC])
1056 ACX_BUGURL([https://gcc.gnu.org/bugs/])
1058 # Allow overriding the default URL for documentation
1059 AC_ARG_WITH(documentation-root-url,
1060 AS_HELP_STRING([--with-documentation-root-url=URL],
1061 [Root for documentation URLs]),
1063 yes) AC_MSG_ERROR([documentation root URL not specified]) ;;
1064 no) AC_MSG_ERROR([documentation root URL not specified]) ;;
1065 */) DOCUMENTATION_ROOT_URL="$withval" ;;
1066 *) AC_MSG_ERROR([documentation root URL does not end with /]) ;;
1068 DOCUMENTATION_ROOT_URL="https://gcc.gnu.org/onlinedocs/"
1070 AC_DEFINE_UNQUOTED(DOCUMENTATION_ROOT_URL,"$DOCUMENTATION_ROOT_URL",
1071 [Define to the root for documentation URLs.])
1073 # Allow overriding the default URL for GCC changes
1074 AC_ARG_WITH(changes-root-url,
1075 AS_HELP_STRING([--with-changes-root-url=URL],
1076 [Root for GCC changes URLs]),
1078 yes) AC_MSG_ERROR([changes root URL not specified]) ;;
1079 no) AC_MSG_ERROR([changes root URL not specified]) ;;
1080 */) CHANGES_ROOT_URL="$withval" ;;
1081 *) AC_MSG_ERROR([changes root URL does not end with /]) ;;
1083 CHANGES_ROOT_URL="https://gcc.gnu.org/"
1085 AC_DEFINE_UNQUOTED(CHANGES_ROOT_URL,"$CHANGES_ROOT_URL",
1086 [Define to the root for URLs about GCC changes.])
1088 # Sanity check enable_languages in case someone does not run the toplevel
1089 # configure # script.
1090 AC_ARG_ENABLE(languages,
1091 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
1092 [case ,${enable_languages}, in
1094 # go safe -- we cannot be much sure without the toplevel
1096 # analysis of which target libs are present and usable
1100 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
1105 enable_languages=c,${enable_languages}
1108 [enable_languages=c])
1110 # If top-level libada has been disabled, then wire in install-gnatlib
1111 # invocation with `make install', so that one can build and install
1112 # the library manually with `make -C gcc all gnatlib gnattools install'.
1113 if test x"$enable_libada" = xno; then
1114 gnat_install_lib=gnat-install-lib
1118 AC_SUBST(gnat_install_lib)
1120 if test x"$enable_as_accelerator_for" != x; then
1121 AC_DEFINE(ACCEL_COMPILER, 1,
1122 [Define if this compiler should be built as the offload target compiler.])
1123 enable_as_accelerator=yes
1126 # In this case we expect offload compiler to be built as native, so we
1127 # need to rename the driver to avoid clashes with host's drivers.
1128 program_transform_name="s&^&${target}-&" ;;
1130 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
1131 program_transform_name=`echo $program_transform_name | sed $sedscript`
1132 accel_dir_suffix=/accel/${target_noncanonical}
1133 real_target_noncanonical=${enable_as_accelerator_for}
1135 AC_SUBST(enable_as_accelerator)
1136 AC_SUBST(real_target_noncanonical)
1137 AC_SUBST(accel_dir_suffix)
1139 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
1140 tgt=`echo $tgt | sed 's/=.*//'`
1144 *-intelmic-* | *-intelmicemul-*)
1145 omp_device_property=omp-device-properties-i386
1146 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/i386/t-omp-device"
1149 omp_device_property=omp-device-properties-gcn
1150 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/gcn/t-omp-device"
1153 omp_device_property=omp-device-properties-nvptx
1154 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/nvptx/t-omp-device"
1157 AC_MSG_ERROR([unknown offload target specified])
1160 omp_device_properties="${omp_device_properties} ${tgt}=${omp_device_property}"
1161 omp_device_property_deps="${omp_device_property_deps} ${omp_device_property}"
1163 if test x"$offload_targets" = x; then
1164 offload_targets=$tgt
1166 offload_targets="$offload_targets,$tgt"
1169 AC_SUBST(omp_device_properties)
1170 AC_SUBST(omp_device_property_deps)
1172 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
1173 [Define to offload targets, separated by commas.])
1174 if test x"$enable_offloading" != x; then
1175 AC_DEFINE(ENABLE_OFFLOADING, 1,
1176 [Define this to enable support for offloading.])
1178 AC_DEFINE(ENABLE_OFFLOADING, 0,
1179 [Define this to enable support for offloading.])
1182 if test "x$enable_offload_defaulted" = xyes; then
1183 AC_DEFINE(OFFLOAD_DEFAULTED, 1,
1184 [Define to 1 to if -foffload is defaulted])
1187 AC_ARG_WITH(multilib-list,
1188 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, ARM, AVR, OR1K, RISC-V, SH and x86-64 only)])],
1190 with_multilib_list=default)
1192 AC_ARG_WITH(multilib-generator,
1193 [AS_HELP_STRING([--with-multilib-generator], [Multi-libs configuration string (RISC-V only)])],
1195 with_multilib_generator=default)
1197 # -------------------------
1198 # Checks for other programs
1199 # -------------------------
1203 # Find some useful tools
1205 # We need awk to create options.cc and options.h.
1206 # Bail out if it's missing.
1208 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1215 AC_SUBST(ranlib_flags)
1219 # See if cmp has --ignore-initial.
1220 gcc_AC_PROG_CMP_IGNORE_INITIAL
1222 # See if we have the mktemp command.
1223 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1225 # See if makeinfo has been installed and is modern enough
1226 # that we can use it.
1227 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1228 [GNU texinfo.* \([0-9][0-9.]*\)],
1229 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1230 if test $gcc_cv_prog_makeinfo_modern = no; then
1232 *** Makeinfo is missing or too old.
1233 *** Info documentation will not be built.])
1238 AC_SUBST(BUILD_INFO)
1240 # Is pod2man recent enough to regenerate manpages?
1241 AC_MSG_CHECKING([for recent Pod::Man])
1242 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1244 GENERATED_MANPAGES=generated-manpages
1249 AC_SUBST(GENERATED_MANPAGES)
1251 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1254 dnl Don't use AC_PROG_LEX; we insist on flex.
1255 dnl LEXLIB is not useful in gcc.
1256 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1259 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1261 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1262 # check for build == host before using them.
1265 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1266 && test -d ../binutils ; then
1267 NM='${objdir}/../binutils/nm-new'
1269 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1273 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1274 && test -d ../binutils ; then
1275 AR='${objdir}/../binutils/ar'
1277 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1280 # The jit documentation looks better if built with sphinx, but can be
1281 # built with texinfo if sphinx is not available.
1282 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1283 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1285 # --------------------
1286 # Checks for C headers
1287 # --------------------
1289 # Need to reject headers which give warnings, so that the -Werror bootstrap
1290 # works later. *sigh* This needs to come before all header checks.
1297 AC_HEADER_TIOCGWINSZ
1298 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1299 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1300 sys/resource.h sys/param.h sys/times.h sys/stat.h sys/locking.h \
1301 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1303 # Check for thread headers.
1304 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1305 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1307 # These tests can't be done till we know if we have limits.h.
1311 # ----------------------
1312 # Checks for C++ headers
1313 # ----------------------
1315 dnl Autoconf will give an error in the configure script if there is no
1316 dnl C++ preprocessor. Hack to prevent that.
1317 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1319 m4_popdef([AC_MSG_ERROR])[]dnl
1321 AC_CHECK_HEADERS(unordered_map)
1322 AC_CHECK_HEADERS(tr1/unordered_map)
1323 AC_CHECK_HEADERS(ext/hash_map)
1326 # Dependency checking.
1330 AC_CONFIG_COMMANDS([gccdepdir],[
1331 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1332 for lang in $subdirs c-family common analyzer rtl-ssa
1334 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1335 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1337 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1344 # These libraries may be used by collect2.
1345 # We may need a special search path to get them linked.
1346 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1348 for libs in '' -lld -lmld \
1349 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1350 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1353 AC_TRY_LINK_FUNC(ldopen,
1354 [gcc_cv_collect2_libs="$libs"; break])
1357 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1358 case $gcc_cv_collect2_libs in
1360 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1362 AC_SUBST(COLLECT2_LIBS)
1364 # When building Ada code on Alpha, we need exc_resume which is usually in
1365 # -lexc. So test for it.
1368 AC_SEARCH_LIBS(exc_resume, exc)
1371 AC_SUBST(GNAT_LIBEXC)
1373 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1376 AC_SEARCH_LIBS(kstat_open, kstat)
1377 EXTRA_GCC_LIBS="$LIBS"
1379 AC_SUBST(EXTRA_GCC_LIBS)
1381 # Solaris needs libsocket and libnsl for socket functions before 11.4.
1382 # C++ needs those for libcody.
1390 # Some systems put ldexp and frexp in libm instead of libc; assume
1391 # they're both in the same place. jcf-dump needs them.
1394 AC_SEARCH_LIBS(ldexp, m)
1399 # Some systems need dlopen
1402 AC_SEARCH_LIBS(dlopen, dl)
1407 # Use <inttypes.h> only if it exists,
1408 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1410 AC_MSG_CHECKING(for inttypes.h)
1411 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1412 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1413 [[#define __STDC_FORMAT_MACROS
1414 #include <sys/types.h>
1415 #include <inttypes.h>]],
1420 [gcc_cv_header_inttypes_h=yes],
1421 [gcc_cv_header_inttypes_h=no])])
1422 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1423 if test $gcc_cv_header_inttypes_h = yes; then
1424 AC_DEFINE(HAVE_INTTYPES_H, 1,
1425 [Define if you have a working <inttypes.h> header file.])
1428 # Look for the ZSTD package.
1431 AC_SUBST(ZSTD_INCLUDE)
1435 AC_SUBST(ZSTD_CPPFLAGS)
1436 AC_SUBST(ZSTD_LDFLAGS)
1438 [AS_HELP_STRING([--with-zstd=PATH],
1439 [specify prefix directory for installed zstd library.
1440 Equivalent to --with-zstd-include=PATH/include
1441 plus --with-zstd-lib=PATH/lib])])
1442 AC_ARG_WITH(zstd-include,
1443 [AS_HELP_STRING([--with-zstd-include=PATH],
1444 [specify directory for installed zstd include files])])
1445 AC_ARG_WITH(zstd-lib,
1446 [AS_HELP_STRING([--with-zstd-lib=PATH],
1447 [specify directory for the installed zstd library])])
1448 case "x$with_zstd" in
1454 *) ZSTD_INCLUDE=$with_zstd/include
1455 ZSTD_LIB=$with_zstd/lib
1459 if test "x$with_zstd" != xno; then
1460 if test "x$with_zstd_include" != x; then
1461 ZSTD_INCLUDE=$with_zstd_include
1463 if test "x$with_zstd_lib" != x; then
1464 ZSTD_LIB=$with_zstd_lib
1466 if test "x$ZSTD_INCLUDE" != x \
1467 && test "x$ZSTD_INCLUDE" != xno; then
1468 ZSTD_CPPFLAGS=-I$ZSTD_INCLUDE
1470 if test "x$ZSTD_LIB" != x \
1471 && test "x$ZSTD_LIB" != xno; then
1472 ZSTD_LDFLAGS=-L$ZSTD_LIB
1475 CXXFLAGS="$CXXFLAGS $ZSTD_CPPFLAGS"
1476 LDFLAGS="$LDFLAGS $ZSTD_LDFLAGS"
1478 AC_MSG_CHECKING(for zstd.h)
1479 AC_CACHE_VAL(gcc_cv_header_zstd_h,
1480 # We require version 1.3.0 or later. This is the first version that has
1481 # ZSTD_getFrameContentSize.
1482 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1484 #if ZSTD_VERSION_NUMBER < 10300
1485 #error "need zstd 1.3.0 or better"
1487 [gcc_cv_header_zstd_h=yes],
1488 [gcc_cv_header_zstd_h=no])])
1489 AC_MSG_RESULT($gcc_cv_header_zstd_h)
1490 if test $gcc_cv_header_zstd_h = yes; then
1491 AC_DEFINE(HAVE_ZSTD_H, 1,
1492 [Define if you have a working <zstd.h> header file.])
1493 elif test "x$with_zstd" != x; then
1494 as_fn_error $? "Unable to find zstd.h. See config.log for details." "$LINENO" 5
1497 # LTO can use zstd compression algorithm
1500 AC_SEARCH_LIBS(ZSTD_compress, zstd)
1506 dnl Disabled until we have a complete test for buggy enum bitfields.
1507 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1509 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1510 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1511 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1512 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1513 putchar_unlocked putc_unlocked)
1514 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1515 popen sysconf strsignal getrusage nl_langinfo \
1516 gettimeofday mbstowcs wcswidth mmap posix_fallocate setlocale \
1517 gcc_UNLOCKED_FUNCS madvise mallinfo mallinfo2 fstatat)
1519 if test x$ac_cv_func_mbstowcs = xyes; then
1520 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1521 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1527 [gcc_cv_func_mbstowcs_works=yes],
1528 [gcc_cv_func_mbstowcs_works=no],
1529 [gcc_cv_func_mbstowcs_works=yes])])
1530 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1531 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1532 [Define this macro if mbstowcs does not crash when its
1533 first argument is NULL.])
1537 AC_CHECK_TYPE(ssize_t, int)
1538 AC_CHECK_TYPE(caddr_t, char *)
1539 AC_CHECK_TYPE(sighander_t,
1540 AC_DEFINE(HAVE_SIGHANDLER_T, 1,
1541 [Define if <sys/signal.h> defines sighandler_t]),
1544 GCC_AC_FUNC_MMAP_BLACKLIST
1548 # Under VMS, vfork works very differently than on Unix. The standard test
1549 # won't work, and it isn't easily adaptable. It makes more sense to
1551 ac_cv_func_vfork_works=yes
1558 # Until we have in-tree GNU iconv:
1560 if test -f "$LTLIBICONV"; then
1561 LIBICONV_DEP=$LTLIBICONV
1563 AC_SUBST(LIBICONV_DEP)
1569 # We will need to find libiberty.h and ansidecl.h
1570 saved_CFLAGS="$CFLAGS"
1571 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1572 saved_CXXFLAGS="$CXXFLAGS"
1573 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1575 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1576 # normal autoconf function for these. But force definition of
1577 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1578 # basename handling in libiberty.h.
1579 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1580 #undef HAVE_DECL_BASENAME
1581 #define HAVE_DECL_BASENAME 1
1582 #include "ansidecl.h"
1583 #include "system.h"])
1585 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1586 madvise stpcpy strnlen strsignal strverscmp \
1587 strtol strtoul strtoll strtoull setenv unsetenv \
1588 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1589 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1590 #include "ansidecl.h"
1591 #include "system.h"])
1593 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1594 #include "ansidecl.h"
1596 #ifdef HAVE_SYS_RESOURCE_H
1597 #include <sys/resource.h>
1601 gcc_AC_CHECK_DECLS(mallinfo mallinfo2, , ,[
1602 #include "ansidecl.h"
1604 #ifdef HAVE_MALLOC_H
1609 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1610 #include "ansidecl.h"
1612 #ifdef HAVE_SYS_RESOURCE_H
1613 #include <sys/resource.h>
1615 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1616 [Define to `long' if <sys/resource.h> doesn't define.])])
1618 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1619 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1620 # in collect2.cc, <fcntl.h> isn't visible, but the configure test below needs
1621 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1622 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1623 #include "ansidecl.h"
1632 gcc_AC_CHECK_DECLS(times, , ,[
1633 #include "ansidecl.h"
1635 #ifdef HAVE_SYS_TIMES_H
1636 #include <sys/times.h>
1640 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1641 #include "ansidecl.h"
1646 # More time-related stuff.
1647 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1648 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1649 #include "ansidecl.h"
1651 #ifdef HAVE_SYS_TIMES_H
1652 #include <sys/times.h>
1654 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1655 if test $ac_cv_struct_tms = yes; then
1656 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1657 [Define if <sys/times.h> defines struct tms.])
1660 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1661 # revisit after autoconf 2.50.
1662 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1663 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1664 #include "ansidecl.h"
1666 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1667 if test $gcc_cv_type_clock_t = yes; then
1668 AC_DEFINE(HAVE_CLOCK_T, 1,
1669 [Define if <time.h> defines clock_t.])
1672 # Check if F_SETLKW is supported by fcntl.
1673 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1674 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1675 #include <fcntl.h>]], [[
1681 return fcntl (1, F_SETLKW, &fl);]])],
1682 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1683 if test $ac_cv_f_setlkw = yes; then
1684 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1685 [Define if F_SETLKW supported by fcntl.])
1688 # Check if O_CLOEXEC is defined by fcntl
1689 AC_CACHE_CHECK(for O_CLOEXEC, ac_cv_o_cloexec, [
1690 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1691 #include <fcntl.h>]], [[
1692 return open ("/dev/null", O_RDONLY | O_CLOEXEC);]])],
1693 [ac_cv_o_cloexec=yes],[ac_cv_o_cloexec=no])])
1694 if test $ac_cv_o_cloexec = yes; then
1695 AC_DEFINE(HOST_HAS_O_CLOEXEC, 1,
1696 [Define if O_CLOEXEC supported by fcntl.])
1699 # C++ Modules would like some networking features to provide the mapping
1700 # server. You can still use modules without them though.
1701 # The following network-related checks could probably do with some
1702 # Windows and other non-linux defenses and checking.
1704 # Local socket connectivity wants AF_UNIX networking
1705 # Check for AF_UNIX networking
1706 AC_CACHE_CHECK(for AF_UNIX, ac_cv_af_unix, [
1707 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1708 #include <sys/types.h>
1709 #include <sys/socket.h>
1711 #include <netinet/in.h>]],[[
1713 un.sun_family = AF_UNSPEC;
1714 int fd = socket (AF_UNIX, SOCK_STREAM, 0);
1715 connect (fd, (sockaddr *)&un, sizeof (un));]])],
1716 [ac_cv_af_unix=yes],
1717 [ac_cv_af_unix=no])])
1718 if test $ac_cv_af_unix = yes; then
1719 AC_DEFINE(HAVE_AF_UNIX, 1,
1720 [Define if AF_UNIX supported.])
1723 # Remote socket connectivity wants AF_INET6 networking
1724 # Check for AF_INET6 networking
1725 AC_CACHE_CHECK(for AF_INET6, ac_cv_af_inet6, [
1726 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1727 #include <sys/types.h>
1728 #include <sys/socket.h>
1729 #include <netinet/in.h>
1730 #include <netdb.h>]],[[
1732 in6.sin6_family = AF_UNSPEC;
1733 struct addrinfo *addrs = 0;
1734 struct addrinfo hints;
1736 hints.ai_family = AF_INET6;
1737 hints.ai_socktype = SOCK_STREAM;
1738 hints.ai_protocol = 0;
1739 hints.ai_canonname = 0;
1742 int e = getaddrinfo ("localhost", 0, &hints, &addrs);
1743 const char *str = gai_strerror (e);
1744 freeaddrinfo (addrs);
1745 int fd = socket (AF_INET6, SOCK_STREAM, 0);
1746 connect (fd, (sockaddr *)&in6, sizeof (in6));]])],
1747 [ac_cv_af_inet6=yes],
1748 [ac_cv_af_inet6=no])])
1749 if test $ac_cv_af_inet6 = yes; then
1750 AC_DEFINE(HAVE_AF_INET6, 1,
1751 [Define if AF_INET6 supported.])
1754 # Check if _LK_LOCK is supported by _locking
1755 AC_CACHE_CHECK(for _LK_LOCK, ac_cv_lk_lock, [
1756 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1758 #include <sys/locking.h>]], [[
1760 return _locking (fd, _LK_LOCK, 0);]])],
1761 [ac_cv_lk_lock=yes],[ac_cv_lk_lock=no])])
1762 if test $ac_cv_lk_lock = yes; then
1763 AC_DEFINE(HOST_HAS_LK_LOCK, 1,
1764 [Define if _LK_LOC supported by _locking.])
1767 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1768 CFLAGS="$saved_CFLAGS"
1769 CXXFLAGS="$saved_CXXFLAGS"
1771 # mkdir takes a single argument on some systems.
1772 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1780 # With Setjmp/Longjmp based exception handling.
1781 AC_ARG_ENABLE(sjlj-exceptions,
1782 [AS_HELP_STRING([--enable-sjlj-exceptions],
1783 [arrange to use setjmp/longjmp exception handling])],
1786 if test $enableval != yes; then
1787 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1792 force_sjlj_exceptions=yes],
1795 force_sjlj_exceptions=yes
1799 force_sjlj_exceptions=yes
1803 force_sjlj_exceptions=no
1806 if test $force_sjlj_exceptions = yes; then
1807 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1808 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1809 [Define 0/1 to force the choice for exception handling model.])
1812 # --------------------------------------------------------
1813 # Build, host, and target specific configuration fragments
1814 # --------------------------------------------------------
1816 # Collect build-machine-specific information.
1817 . ${srcdir}/config.build || exit 1
1819 # Collect host-machine-specific information.
1820 . ${srcdir}/config.host || exit 1
1824 # Collect target-machine-specific information.
1825 . ${srcdir}/config.gcc || exit 1
1827 extra_objs="${host_extra_objs} ${extra_objs}"
1828 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1830 # Default the target-machine variables that were not explicitly set.
1831 if test x"$tm_file" = x
1832 then tm_file=$cpu_type/$cpu_type.h; fi
1834 if test x"$extra_headers" = x
1835 then extra_headers=; fi
1837 if test x$md_file = x
1838 then md_file=$cpu_type/$cpu_type.md; fi
1840 if test x$out_file = x
1841 then out_file=$cpu_type/$cpu_type.c; fi
1843 if test x"$tmake_file" = x
1844 then tmake_file=$cpu_type/t-$cpu_type
1847 # Support --enable-initfini-array.
1848 if test x$enable_initfini_array != xno; then
1849 tm_file="${tm_file} initfini-array.h"
1852 if test x"$dwarf2" = xyes
1853 then tm_file="$tm_file tm-dwarf2.h"
1856 # Say what files are being used for the output code and MD file.
1857 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1858 echo "Using \`$srcdir/config/$md_file' as machine description file."
1860 # If any of the xm_file variables contain nonexistent files, warn
1861 # about them and drop them.
1864 for x in $build_xm_file; do
1865 if test -f $srcdir/config/$x
1867 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1873 for x in $host_xm_file; do
1874 if test -f $srcdir/config/$x
1876 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1882 for x in $xm_file; do
1883 if test -f $srcdir/config/$x
1885 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1891 for f in $tm_file; do
1894 if test $count = ax; then
1895 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1897 echo "Using the following target machine macro files:"
1898 for f in $tm_file; do
1899 echo " $srcdir/config/$f"
1903 if test x$use_long_long_for_widest_fast_int = xyes; then
1904 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1905 [Define to 1 if the 'long long' type is wider than 'long' but still
1906 efficiently supported by the host hardware.])
1909 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1910 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1912 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1913 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1916 for f in $host_xm_file; do
1919 if test $count = a; then
1921 elif test $count = ax; then
1922 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1924 echo "Using the following host machine macro files:"
1925 for f in $host_xm_file; do
1926 echo " $srcdir/config/$f"
1929 echo "Using ${out_host_hook_obj} for host machine hooks."
1931 if test "$host_xm_file" != "$build_xm_file"; then
1933 for f in $build_xm_file; do
1936 if test $count = a; then
1938 elif test $count = ax; then
1939 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1941 echo "Using the following build machine macro files:"
1942 for f in $build_xm_file; do
1943 echo " $srcdir/config/$f"
1948 if test -n "$configured_native_system_header_dir"; then
1949 native_system_header_dir=$configured_native_system_header_dir
1951 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1952 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1956 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1957 gcc_cv_mcontext_underscores,
1958 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1959 #include <sys/cdefs.h>
1960 #include <sys/signal.h>
1961 #include <ucontext.h>
1962 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1964 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1965 if test $gcc_cv_mcontext_underscores = yes; then
1966 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1967 [mcontext_t fields start with __])
1976 # Check if a valid thread package
1977 case ${enable_threads} in
1980 target_thread_file='single'
1984 target_thread_file='single'
1986 aix | dce | lynx | mipssde | posix | rtems | \
1987 single | tpf | vxworks | win32)
1988 target_thread_file=${enable_threads}
1991 echo "${enable_threads} is an unknown thread package" 1>&2
1996 if test x${thread_file} = x; then
1997 # No thread file set by target-specific clauses in config.gcc,
1998 # so use file chosen by default logic above
1999 thread_file=${target_thread_file}
2007 if test x$enable___cxa_atexit = xyes || \
2008 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
2009 if test x$host = x$target; then
2011 # mingw32 doesn't have __cxa_atexit but uses atexit registration
2012 # keyed to flag_use_cxa_atexit
2020 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
2021 [echo "__cxa_atexit can't be enabled on this target"])
2025 # We can't check for __cxa_atexit when building a cross, so assume
2029 if test x$use_cxa_atexit = xyes; then
2030 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
2031 [Define if you want to use __cxa_atexit, rather than atexit, to
2032 register C++ destructors for local statics and global objects.
2033 This is essential for fully standards-compliant handling of
2034 destructors, but requires __cxa_atexit in libc.])
2038 # Look for a file containing extra machine modes.
2039 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
2040 extra_modes_file='$(srcdir)'/config/${extra_modes}
2041 AC_SUBST(extra_modes_file)
2042 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
2043 [Define to the name of a file containing a list of extra machine modes
2044 for this architecture.])
2047 # Convert extra_options into a form suitable for Makefile use.
2050 for f in $extra_options; do
2051 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
2052 all_opt_files="$all_opt_files $srcdir/config/$f"
2054 AC_SUBST(extra_opt_files)
2056 # auto-host.h is the file containing items generated by autoconf and is
2057 # the first file included by config.h.
2058 # If host=build, it is correct to have bconfig include auto-host.h
2059 # as well. If host!=build, we are in error and need to do more
2060 # work to find out the build config parameters.
2061 if test x$host = x$build
2063 build_auto=auto-host.h
2064 HAVE_AUTO_BUILD='# '
2066 # We create a subdir, then run autoconf in the subdir.
2067 # To prevent recursion we set host and build for the new
2068 # invocation of configure to the build for this invocation
2075 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
2076 *) realsrcdir=../${srcdir};;
2078 # Clearing GMPINC is necessary to prevent host headers being
2079 # used by the build compiler. Defining GENERATOR_FILE stops
2080 # system.h from including gmp.h.
2081 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
2082 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
2083 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
2084 GMPINC="" CPPFLAGS="${CPPFLAGS_FOR_BUILD} -DGENERATOR_FILE" \
2085 ${realsrcdir}/configure \
2086 --enable-languages=${enable_languages-all} \
2087 ${enable_obsolete+--enable-obsolete="$enable_obsolete"} \
2088 ${enable_option_checking+--enable-option-checking="$enable_option_checking"} \
2089 --target=$target_alias --host=$build_alias \
2090 --build=$build_alias || exit # retaining $tempdir
2092 # We just finished tests for the build machine, so rename
2093 # the file auto-build.h in the gcc directory.
2094 mv auto-host.h ../auto-build.h
2097 build_auto=auto-build.h
2100 AC_SUBST(build_subdir)
2101 AC_SUBST(HAVE_AUTO_BUILD)
2103 tm_file="${tm_file} defaults.h"
2104 tm_p_file="${tm_p_file} tm-preds.h"
2105 tm_d_file="${tm_d_file} defaults.h"
2106 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
2107 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
2108 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
2109 # put this back in temporarily.
2110 xm_file="auto-host.h ansidecl.h ${xm_file}"
2117 # Compile in configure arguments.
2118 if test -f configargs.h ; then
2119 # Being re-configured.
2120 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
2121 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
2122 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
2123 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
2126 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
2129 # Double all backslashes and backslash all quotes to turn
2130 # gcc_config_arguments into a C string.
2131 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
2132 $gcc_config_arguments
2134 gcc_config_arguments_str=`cat conftest.out`
2137 cat > configargs.h <<EOF
2138 /* Generated automatically. */
2139 static const char configuration_arguments[] = "$gcc_config_arguments_str";
2140 static const char thread_model[] = "$thread_file";
2142 static const struct {
2143 const char *name, *value;
2144 } configure_default_options[] = $configure_default_options;
2149 gcc_BASEVER=`cat $srcdir/BASE-VER`
2150 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
2151 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
2152 if test -f $srcdir/REVISION ; then
2153 gcc_REVISION=`cat $srcdir/REVISION`
2157 cat > plugin-version.h <<EOF
2158 #include "configargs.h"
2160 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
2161 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
2162 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
2163 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
2165 static char basever[] = "$gcc_BASEVER";
2166 static char datestamp[] = "$gcc_DATESTAMP";
2167 static char devphase[] = "$gcc_DEVPHASE";
2168 static char revision[] = "$gcc_REVISION";
2170 /* FIXME plugins: We should make the version information more precise.
2171 One way to do is to add a checksum. */
2173 static struct plugin_gcc_version gcc_version = {basever, datestamp,
2175 configuration_arguments};
2179 # Determine what GCC version number to use in filesystem paths.
2182 # Internationalization
2183 ZW_GNU_GETTEXT_SISTER_DIR
2185 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
2186 # -liconv on the link line twice.
2187 case "$LIBINTL" in *$LIBICONV*)
2191 AC_ARG_ENABLE(secureplt,
2192 [AS_HELP_STRING([--enable-secureplt],
2193 [enable -msecure-plt by default for PowerPC])],
2196 AC_ARG_ENABLE(mingw-wildcard,
2197 [AS_HELP_STRING([--enable-mingw-wildcard],
2198 [Set whether to expand wildcard on command-line.
2199 Default to platform configuration])],
2200 [],[enable_mingw_wildcard=platform])
2201 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
2202 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
2203 $(test x"$enable_mingw_wildcard" = xno; echo $?),
2204 [Value to set mingw's _dowildcard to.])])
2206 AC_ARG_ENABLE(large-address-aware,
2207 [AS_HELP_STRING([--enable-large-address-aware],
2208 [Link mingw executables with --large-address-aware])])
2209 AS_IF([test x"$enable_large_address_aware" = xyes],
2210 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
2211 [Define if we should link mingw executables with --large-address-aware])])
2213 AC_ARG_ENABLE(leading-mingw64-underscores,
2214 AS_HELP_STRING([--enable-leading-mingw64-underscores],
2215 [enable leading underscores on 64 bit mingw targets]),
2217 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
2218 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
2219 [Define if we should use leading underscore on 64 bit mingw targets])])
2222 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
2225 AC_ARG_ENABLE(frame-pointer,
2226 [AS_HELP_STRING([--enable-frame-pointer],
2227 [enable -fno-omit-frame-pointer by default for x86])], [],
2230 linux* | gnu* | darwin[[8912]]* | cygwin* | mingw*)
2231 # Enable -fomit-frame-pointer by default for these systems with DWARF2.
2232 enable_frame_pointer=no
2235 enable_frame_pointer=yes
2241 i[[34567]]86-*-* | x86_64-*-*)
2242 if test "x$enable_cld" = xyes; then
2243 tm_defines="${tm_defines} USE_IX86_CLD=1"
2245 if test "x$enable_frame_pointer" = xyes; then
2246 tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1"
2251 # Windows32 Registry support for specifying GCC installation paths.
2252 AC_ARG_ENABLE(win32-registry,
2253 [AS_HELP_STRING([--disable-win32-registry],
2254 [disable lookup of installation paths in the
2255 Registry on Windows hosts])
2256 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
2257 AS_HELP_STRING([--enable-win32-registry=KEY],
2258 [use KEY instead of GCC version as the last portion
2259 of the registry key])],,)
2262 win32 | pe | cygwin* | mingw32*)
2263 if test "x$enable_win32_registry" != xno; then
2264 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
2267 if test "x$enable_win32_registry" != xno; then
2268 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
2269 [Define to 1 if installation paths should be looked up in the Windows
2270 Registry. Ignored on non-Windows hosts.])
2272 if test "x$enable_win32_registry" != xyes \
2273 && test "x$enable_win32_registry" != x; then
2274 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
2275 [Define to be the last component of the Windows registry key under which
2276 to look for installation paths. The full key used will be
2277 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
2278 The default is the GCC version number.])
2284 # Get an absolute path to the GCC top-level source directory
2285 holddir=`${PWDCMD-pwd}`
2287 topdir=`${PWDCMD-pwd}`
2290 # Conditionalize the makefile for this host machine.
2292 for f in ${host_xmake_file}
2294 if test -f ${srcdir}/config/$f
2296 xmake_file="${xmake_file} \$(srcdir)/config/$f"
2300 # Conditionalize the makefile for this target machine.
2302 for f in ${tmake_file}
2304 if test -f ${srcdir}/config/$f
2306 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
2309 tmake_file="${tmake_file_}${omp_device_property_tmake_file}"
2311 out_object_file=`basename $out_file .c`.o
2312 common_out_object_file=`basename $common_out_file .c`.o
2314 tm_file_list="options.h"
2315 tm_include_list="options.h insn-constants.h"
2316 for f in $tm_file; do
2319 f=`echo $f | sed 's/^..//'`
2320 tm_file_list="${tm_file_list} $f"
2321 tm_include_list="${tm_include_list} $f"
2324 tm_file_list="${tm_file_list} \$(srcdir)/$f"
2325 tm_include_list="${tm_include_list} $f"
2328 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
2329 tm_include_list="${tm_include_list} config/$f"
2336 for f in $tm_p_file; do
2339 tm_p_file_list="${tm_p_file_list} $f"
2340 tm_p_include_list="${tm_p_include_list} $f"
2343 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
2344 tm_p_include_list="${tm_p_include_list} config/$f"
2349 tm_d_include_list="options.h insn-constants.h"
2350 for f in $tm_d_file; do
2353 tm_d_file_list="${tm_d_file_list} \$(srcdir)/$f"
2354 tm_d_include_list="${tm_d_include_list} $f"
2357 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
2358 tm_d_include_list="${tm_d_include_list} config/$f"
2365 for f in $xm_file; do
2368 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2369 xm_include_list="${xm_include_list} $f"
2372 xm_file_list="${xm_file_list} $f"
2373 xm_include_list="${xm_include_list} $f"
2376 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2377 xm_include_list="${xm_include_list} config/$f"
2383 host_xm_include_list=
2384 for f in $host_xm_file; do
2387 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2388 host_xm_include_list="${host_xm_include_list} $f"
2391 host_xm_file_list="${host_xm_file_list} $f"
2392 host_xm_include_list="${host_xm_include_list} $f"
2395 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2396 host_xm_include_list="${host_xm_include_list} config/$f"
2402 for f in $build_xm_file; do
2405 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2406 build_xm_include_list="${build_xm_include_list} $f"
2408 auto-build.h | auto-host.h )
2409 build_xm_file_list="${build_xm_file_list} $f"
2410 build_xm_include_list="${build_xm_include_list} $f"
2413 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2414 build_xm_include_list="${build_xm_include_list} config/$f"
2419 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2420 # cross-compiler which does not use the native headers and libraries.
2421 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2422 CROSS= AC_SUBST(CROSS)
2423 ALL=all.internal AC_SUBST(ALL)
2424 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2425 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2427 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2428 test x$build != x$host || test "x$with_build_sysroot" != x; then
2429 if test "x$with_build_sysroot" != x; then
2430 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2432 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2435 if test x$host != x$target
2437 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2439 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2440 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2441 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2444 if test "x$with_build_sysroot" != "x"; then
2445 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2446 elif test "x$with_sysroot" = x; then
2447 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2448 elif test "x$with_sysroot" = xyes; then
2449 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2451 target_header_dir="${with_sysroot}${native_system_header_dir}"
2454 target_header_dir=${native_system_header_dir}
2457 # If this is a cross-compiler that does not
2458 # have its own set of headers then define
2461 # If this is using newlib, without having the headers available now,
2462 # then define inhibit_libc in LIBGCC2_CFLAGS.
2463 # This prevents libgcc2 from containing any code which requires libc
2465 : ${inhibit_libc=false}
2466 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2467 test x$with_newlib = xyes ; } &&
2468 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2471 AC_SUBST(inhibit_libc)
2473 # When building gcc with a cross-compiler, we need to adjust things so
2474 # that the generator programs are still built with the native compiler.
2475 # Also, we cannot run fixincludes.
2477 # These are the normal (build=host) settings:
2478 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2479 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2480 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2481 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2482 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2483 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2485 # And these apply if build != host, or we are generating coverage data
2486 if test x$build != x$host || test "x$coverage_flags" != x
2488 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CFLAGS_FOR_BUILD)'
2489 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CXXFLAGS_FOR_BUILD)'
2490 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2493 # Expand extra_headers to include complete path.
2494 # This substitutes for lots of t-* files.
2496 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2497 for file in ${extra_headers} ; do
2498 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2501 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2502 if test x"$use_gcc_tgmath" = xyes
2503 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2506 # Define collect2 in Makefile.
2507 case $host_can_use_collect2 in
2509 *) collect2='collect2$(exeext)' ;;
2511 AC_SUBST([collect2])
2513 # Add a definition of USE_COLLECT2 if system wants one.
2514 case $use_collect2 in
2515 no) use_collect2= ;;
2518 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2519 xm_defines="${xm_defines} USE_COLLECT2"
2520 case $host_can_use_collect2 in
2522 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2528 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2529 [Define to the name of the LTO plugin DSO that must be
2530 passed to the linker's -plugin=LIB option.])
2532 # ---------------------------
2533 # Assembler & linker features
2534 # ---------------------------
2536 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2537 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2538 # However when ld-new is first executed from the build tree, libtool will
2539 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2540 # to the build tree. While doing this we need to use the previous-stage
2541 # linker, or we have an infinite loop. The presence of a shell script as
2542 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2543 # the gcc/collect-ld script. So we need to know how libtool works, or
2544 # exec-tool will fail.
2546 m4_defun([_LT_CONFIG_COMMANDS], [])
2549 AC_SUBST(enable_fast_install)
2551 # Identify the assembler which will work hand-in-glove with the newly
2552 # built GCC, so that we can examine its features. This is the assembler
2553 # which will be driven by the driver program.
2555 # If build != host, and we aren't building gas in-tree, we identify a
2556 # build->target assembler and hope that it will have the same features
2557 # as the host->target assembler we'll be using.
2558 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2560 m4_pattern_allow([AS_FOR_TARGET])dnl
2561 AS_VAR_SET_IF(gcc_cv_as,, [
2562 if test -x "$DEFAULT_ASSEMBLER"; then
2563 gcc_cv_as="$DEFAULT_ASSEMBLER"
2564 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2565 && test -f ../gas/Makefile \
2566 && test x$build = x$host; then
2567 gcc_cv_as=../gas/as-new$build_exeext
2568 elif test -x as$build_exeext; then
2569 # Build using assembler in the current directory.
2570 gcc_cv_as=./as$build_exeext
2571 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2572 gcc_cv_as="$AS_FOR_TARGET"
2574 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2577 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2578 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2579 case "$ORIGINAL_AS_FOR_TARGET" in
2580 ./as | ./as$build_exeext) ;;
2581 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2586 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2587 [case "${enableval}" in
2593 install_gold_as_default=no
2595 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2596 [case "${enableval}" in
2598 install_gold_as_default=yes
2601 if test x${default_ld} != x; then
2602 install_gold_as_default=yes
2608 AC_MSG_ERROR([invalid --enable-gold argument])
2612 # Identify the linker which will work hand-in-glove with the newly
2613 # built GCC, so that we can examine its features. This is the linker
2614 # which will be driven by the driver program.
2616 # If build != host, and we aren't building gas in-tree, we identify a
2617 # build->target linker and hope that it will have the same features
2618 # as the host->target linker we'll be using.
2619 gcc_cv_gld_major_version=
2620 gcc_cv_gld_minor_version=
2621 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2622 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2623 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2625 AS_VAR_SET_IF(gcc_cv_ld,, [
2626 if test -x "$DEFAULT_LINKER"; then
2627 gcc_cv_ld="$DEFAULT_LINKER"
2628 elif test $install_gold_as_default = yes \
2629 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2630 && test -f ../gold/Makefile \
2631 && test x$build = x$host; then
2632 gcc_cv_ld=../gold/ld-new$build_exeext
2633 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2634 && test -f ../ld/Makefile \
2635 && test x$build = x$host; then
2636 gcc_cv_ld=../ld/ld-new$build_exeext
2637 elif test -x collect-ld$build_exeext; then
2638 # Build using linker in the current directory.
2639 gcc_cv_ld=./collect-ld$build_exeext
2640 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2641 gcc_cv_ld="$LD_FOR_TARGET"
2643 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2646 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2647 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2648 # if the PLUGIN_LD is set ld-new, just have it as ld
2649 # as that is the installed named.
2650 if test x$PLUGIN_LD_SUFFIX = xld-new \
2651 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2654 AC_ARG_WITH(plugin-ld,
2655 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2656 [if test x"$withval" != x; then
2657 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2658 PLUGIN_LD_SUFFIX="$withval"
2660 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2661 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2663 # Check to see if we are using gold instead of ld
2664 AC_MSG_CHECKING(whether we are using gold)
2666 if test x$gcc_cv_ld != x; then
2667 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2668 | grep "GNU gold" > /dev/null; then
2672 AC_MSG_RESULT($ld_is_gold)
2674 AC_MSG_CHECKING(gold linker with split stack support as non default)
2675 # Check to see if default ld is not gold, but gold is
2676 # available and has support for split stack. If gcc was configured
2677 # with gold then no checking is done.
2679 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2681 # For platforms other than powerpc64*, enable as appropriate.
2684 ld_gold=`which ${gcc_cv_ld}.gold`
2685 # Make sure this gold has minimal split stack support
2686 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2687 ld_vers=`$ld_gold --version | sed 1q`
2688 gold_vers=`echo $ld_vers | sed -n \
2689 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2691 # check that the gold version contains the complete split stack support
2692 # on powerpc64 big and little endian
2694 case "$gold_vers" in
2695 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2697 *) gold_non_default=no
2703 if test $gold_non_default = yes; then
2704 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2705 [Define if the gold linker supports split stack and is available as a non-default])
2708 AC_MSG_RESULT($gold_non_default)
2710 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2711 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2712 case "$ORIGINAL_LD_FOR_TARGET" in
2713 ./collect-ld | ./collect-ld$build_exeext) ;;
2714 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2717 AC_MSG_CHECKING(what linker to use)
2718 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2719 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2720 # Single tree build which includes ld. We want to prefer it
2721 # over whatever linker top-level may have detected, since
2722 # we'll use what we're building after installation anyway.
2723 AC_MSG_RESULT(newly built ld)
2725 in_tree_ld_is_elf=no
2726 if (grep 'EMUL = .*elf' ../ld/Makefile \
2727 || grep 'EMUL = .*linux' ../ld/Makefile \
2728 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2729 in_tree_ld_is_elf=yes
2730 elif test "$ld_is_gold" = yes; then
2731 in_tree_ld_is_elf=yes
2733 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
2736 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2737 if test x$gcc_cv_gld_version != x; then
2741 case $gcc_cv_gld_version in
2744 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2747 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2748 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2750 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2751 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2753 AC_MSG_RESULT($gcc_cv_ld)
2755 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2756 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2757 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2760 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2761 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2763 # Figure out what nm we will be using.
2764 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2765 AS_VAR_SET_IF(gcc_cv_nm,, [
2766 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2767 && test -f ../binutils/Makefile \
2768 && test x$build = x$host; then
2769 gcc_cv_nm=../binutils/nm-new$build_exeext
2770 elif test -x nm$build_exeext; then
2771 gcc_cv_nm=./nm$build_exeext
2772 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2773 gcc_cv_nm="$NM_FOR_TARGET"
2775 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2778 AC_MSG_CHECKING(what nm to use)
2779 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2780 # Single tree build which includes binutils.
2781 AC_MSG_RESULT(newly built nm)
2784 AC_MSG_RESULT($gcc_cv_nm)
2788 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2789 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2790 case "$ORIGINAL_NM_FOR_TARGET" in
2791 ./nm | ./nm$build_exeext) ;;
2792 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2796 # Figure out what objdump we will be using.
2797 AS_VAR_SET_IF(gcc_cv_objdump,, [
2798 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2799 && test -f ../binutils/Makefile \
2800 && test x$build = x$host; then
2801 # Single tree build which includes binutils.
2802 gcc_cv_objdump=../binutils/objdump$build_exeext
2803 elif test -x objdump$build_exeext; then
2804 gcc_cv_objdump=./objdump$build_exeext
2805 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2806 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2808 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2811 AC_MSG_CHECKING(what objdump to use)
2812 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2813 # Single tree build which includes binutils.
2814 AC_MSG_RESULT(newly built objdump)
2815 elif test x$gcc_cv_objdump = x; then
2816 AC_MSG_RESULT(not found)
2818 AC_MSG_RESULT($gcc_cv_objdump)
2821 # Figure out what readelf we will be using.
2822 AS_VAR_SET_IF(gcc_cv_readelf,, [
2823 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2824 && test -f ../binutils/Makefile \
2825 && test x$build = x$host; then
2826 # Single tree build which includes binutils.
2827 gcc_cv_readelf=../binutils/readelf$build_exeext
2828 elif test -x readelf$build_exeext; then
2829 gcc_cv_readelf=./readelf$build_exeext
2830 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2831 gcc_cv_readelf="$READELF_FOR_TARGET"
2833 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2836 AC_MSG_CHECKING(what readelf to use)
2837 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2838 # Single tree build which includes binutils.
2839 AC_MSG_RESULT(newly built readelf)
2840 elif test x$gcc_cv_readelf = x; then
2841 AC_MSG_RESULT(not found)
2843 AC_MSG_RESULT($gcc_cv_readelf)
2846 # Figure out what otool we will be using.
2847 AS_VAR_SET_IF(gcc_cv_otool,, [
2848 if test -x otool$build_exeext; then
2849 gcc_cv_otool=./otool$build_exeext
2850 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2851 gcc_cv_otool="$OTOOL_FOR_TARGET"
2853 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2856 AC_MSG_CHECKING(what otool to use)
2857 if test x$gcc_cv_otool = x; then
2858 AC_MSG_RESULT(not found)
2860 AC_MSG_RESULT($gcc_cv_otool)
2863 # Figure out the dsymutil we will use.
2864 AS_VAR_SET_IF(gcc_cv_dsymutil,, [
2865 if test -x "$DEFAULT_DSYMUTIL"; then
2866 gcc_cv_dsymutil="$DEFAULT_DSYMUTIL"
2867 elif test -x dsymutil$build_exeext; then
2868 gcc_cv_dsymutil=./dsymutil$build_exeext
2869 elif ( set dummy $DSYMUTIL_FOR_TARGET; test -x $[2] ); then
2870 gcc_cv_dsymutil=$DSYMUTIL_FOR_TARGET
2871 elif ( set dummy $DSYMUTIL; test -x $[2] ); then
2872 gcc_cv_dsymutil=$DSYMUTIL
2874 AC_PATH_PROG(gcc_cv_dsymutil, $DSYMUTIL_FOR_TARGET)
2877 ORIGINAL_DSYMUTIL_FOR_TARGET=$gcc_cv_dsymutil
2878 AC_SUBST(ORIGINAL_DSYMUTIL_FOR_TARGET)
2879 case "$ORIGINAL_DSYMUTIL_FOR_TARGET" in
2880 ./dsymutil | ./dsymutil$build_exeext) ;;
2881 *) AC_CONFIG_FILES(dsymutil:exec-tool.in, [chmod +x dsymutil]) ;;
2884 # Figure out what assembler alignment features are present.
2885 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,,
2888 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2889 [Define if your assembler supports .balign and .p2align.])])
2891 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,,
2893 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2894 [Define if your assembler supports specifying the maximum number
2895 of bytes to skip when using the GAS .p2align command.])])
2897 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,,
2899 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2900 [Define if your assembler supports .literal16.])])
2902 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,,
2903 [conftest_label1: .word 0
2905 conftest_label2: .word 0
2907 [if test x$gcc_cv_nm != x; then
2908 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2909 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2910 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2912 else gcc_cv_as_subsection_m1=yes
2914 rm -f conftest.nm1 conftest.nm2
2916 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2917 [Define if your assembler supports .subsection and .subsection -1 starts
2918 emitting at the beginning of your section.])])
2920 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,,
2922 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2924 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,,
2925 [ .weakref foobar, barfnot],,
2926 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2928 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,,
2930 .NSUBSPA $CODE$,COMDAT],,
2931 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2933 # .hidden needs to be supported in both the assembler and the linker,
2934 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2935 # This is irritatingly difficult to feature test for; we have to check the
2936 # date string after the version number. If we've got an in-tree
2937 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2939 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2942 conftest_s=' .globl foobar,hidden'
2945 conftest_s=' .hidden foobar
2949 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,, [$conftest_s])
2952 # Darwin as has some visibility support, though with a different syntax.
2953 gcc_cv_as_hidden=yes
2957 # gnu_indirect_function type is an extension proposed at
2958 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2959 # selection of function implementation
2960 AC_ARG_ENABLE(gnu-indirect-function,
2961 [AS_HELP_STRING([--enable-gnu-indirect-function],
2962 [enable the use of the @gnu_indirect_function to glibc systems])],
2963 [case $enable_gnu_indirect_function in
2965 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2966 Valid choices are 'yes' and 'no'.]) ;;
2968 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2972 AC_MSG_CHECKING(linker ifunc IRELATIVE support)
2973 cat > conftest.s <<EOF
2975 .type foo_resolver, @function
2978 .size foo_resolver, .-foo_resolver
2981 .type foo, %gnu_indirect_function
2982 .set foo, foo_resolver
2985 .type bar, @function
2991 if test x$gcc_cv_as != x \
2992 && test x$gcc_cv_ld != x \
2993 && test x$gcc_cv_readelf != x \
2994 && $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2995 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1 \
2996 && $gcc_cv_readelf --relocs --wide conftest \
2997 | grep R_RISCV_IRELATIVE > /dev/null 2>&1; then
2998 enable_gnu_indirect_function=yes
3000 rm -f conftest conftest.o conftest.s
3001 AC_MSG_RESULT($enable_gnu_indirect_function)
3005 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
3006 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
3007 [Define if your system supports gnu indirect functions.])
3011 if test $in_tree_ld != yes ; then
3012 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
3013 if echo "$ld_ver" | grep GNU > /dev/null; then
3014 if test x"$ld_is_gold" = xyes; then
3015 # GNU gold --version looks like this:
3017 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
3019 # We extract the binutils version which is more familiar and specific
3020 # than the gold version.
3021 ld_vers=`echo $ld_ver | sed -n \
3022 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3024 # GNU ld --version looks like this:
3026 # GNU ld (GNU Binutils) 2.21.51.20110225
3027 ld_vers=`echo $ld_ver | sed -n \
3028 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3030 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)\(-*\)\([01][0-9]\)\2\([0-3][0-9]\).*$,\1\3\4,p'`
3031 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3032 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3033 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
3037 # Solaris 2 ld -V output looks like this for a regular version:
3039 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
3041 # but test versions add stuff at the end:
3043 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
3045 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
3046 # numbers can be used in ld.so.1 feature checks even if a different
3047 # linker is configured.
3048 ld_ver=`$gcc_cv_ld -V 2>&1`
3049 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
3050 ld_vers=`echo $ld_ver | sed -n \
3051 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
3052 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3053 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3061 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
3062 [[if test $in_tree_ld = yes ; then
3064 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
3065 && test $in_tree_ld_is_elf = yes; then
3066 gcc_cv_ld_hidden=yes
3069 gcc_cv_ld_hidden=yes
3070 if test x"$ld_is_gold" = xyes; then
3072 elif echo "$ld_ver" | grep GNU > /dev/null; then
3073 if test 0"$ld_date" -lt 20020404; then
3074 if test -n "$ld_date"; then
3075 # If there was date string, but was earlier than 2002-04-04, fail
3077 elif test -z "$ld_vers"; then
3078 # If there was no date string nor ld version number, something is wrong
3081 test -z "$ld_vers_patch" && ld_vers_patch=0
3082 if test "$ld_vers_major" -lt 2; then
3084 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
3085 gcc_cv_ld_hidden="no"
3086 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
3094 gcc_cv_ld_hidden=yes
3097 # Darwin ld has some visibility support.
3098 gcc_cv_ld_hidden=yes
3100 hppa64*-*-hpux* | ia64*-*-hpux*)
3101 gcc_cv_ld_hidden=yes
3104 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
3105 # .symbolic was only added in Solaris 9 12/02.
3106 gcc_cv_ld_hidden=yes
3114 libgcc_visibility=no
3115 AC_SUBST(libgcc_visibility)
3116 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
3117 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
3118 libgcc_visibility=yes
3119 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
3120 [Define if your assembler and linker support .hidden.])
3123 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3124 gcc_cv_ld_ro_rw_mix=unknown
3125 if test $in_tree_ld = yes ; then
3126 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3127 && test $in_tree_ld_is_elf = yes; then
3128 gcc_cv_ld_ro_rw_mix=read-write
3130 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3131 echo '.section myfoosect, "a"' > conftest1.s
3132 echo '.section myfoosect, "aw"' > conftest2.s
3133 echo '.byte 1' >> conftest2.s
3134 echo '.section myfoosect, "a"' > conftest3.s
3135 echo '.byte 0' >> conftest3.s
3136 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3137 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3138 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3139 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3140 conftest2.o conftest3.o > /dev/null 2>&1; then
3141 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3142 | sed -e '/myfoosect/!d' -e N`
3143 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3144 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3145 gcc_cv_ld_ro_rw_mix=read-only
3147 gcc_cv_ld_ro_rw_mix=read-write
3152 rm -f conftest.* conftest[123].*
3155 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3156 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3157 [Define if your linker links a mix of read-only
3158 and read-write sections into a read-write section.])
3160 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3162 gcc_AC_INITFINI_ARRAY
3164 # Check if we have .[us]leb128, and support symbol arithmetic with it.
3165 # Older versions of GAS and some non-GNU assemblers, have a bugs handling
3166 # these directives, even when they appear to accept them.
3167 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,,
3174 .uleb128 0x8000000000000000
3177 if test "x$gcc_cv_objdump" != x; then
3178 if $gcc_cv_objdump -s conftest.o 2>/dev/null \
3179 | grep '04800a8e 78808080 80808080 808001' >/dev/null; then
3180 gcc_cv_as_leb128=yes
3182 elif test "x$gcc_cv_otool" != x; then
3183 if $gcc_cv_otool -d conftest.o 2>/dev/null \
3184 | grep '04 80 0a 8e 78 80 80 80 80 80 80 80 80 80 01' >/dev/null; then
3185 gcc_cv_as_leb128=yes
3188 # play safe, assume the assembler is broken.
3192 [AC_DEFINE(HAVE_AS_LEB128, 1,
3193 [Define if your assembler supports .sleb128 and .uleb128.])],
3194 [AC_DEFINE(HAVE_AS_LEB128, 0,
3195 [Define if your assembler supports .sleb128 and .uleb128.])])
3197 # Determine if an .eh_frame section is read-only.
3198 gcc_fn_eh_frame_ro () {
3199 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
3200 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
3201 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
3204 # Check if we have assembler support for unwind directives.
3205 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,,
3211 .cfi_escape 1, 2, 3, 4, 5
3215 # If the linker used on Solaris (like Sun ld) isn't capable of merging
3216 # read-only and read-write sections, we need to make sure that the
3217 # assembler used emits read-write .eh_frame sections.
3218 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
3219 gcc_cv_as_cfi_directive=yes
3220 elif test "x$gcc_cv_objdump" = x; then
3221 # No objdump, err on the side of caution.
3222 gcc_cv_as_cfi_directive=no
3224 if test x$gas = xyes; then
3232 sparc*-*-solaris2.*)
3233 # On Solaris/SPARC, .eh_frame sections should always be read-write.
3234 if gcc_fn_eh_frame_ro $as_32_opt \
3235 || gcc_fn_eh_frame_ro $as_64_opt; then
3236 gcc_cv_as_cfi_directive=no
3238 gcc_cv_as_cfi_directive=yes
3241 i?86-*-solaris2.* | x86_64-*-solaris2.*)
3242 # On Solaris/x86, make sure that GCC and assembler agree on using
3243 # read-only .eh_frame sections for 64-bit.
3244 if gcc_fn_eh_frame_ro $as_32_opt; then
3245 gcc_cv_as_cfi_directive=no
3246 elif gcc_fn_eh_frame_ro $as_64_opt; then
3247 gcc_cv_as_cfi_directive=yes
3249 gcc_cv_as_cfi_directive=no
3256 gcc_cv_as_cfi_directive=yes
3259 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
3260 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,,
3263 .cfi_adjust_cfa_offset 64
3265 .cfi_adjust_cfa_offset 128
3268 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
3269 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
3270 gcc_cv_as_cfi_advance_working=yes
3274 # no objdump, err on the side of caution
3275 gcc_cv_as_cfi_advance_working=no
3277 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
3278 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
3279 [`if test $gcc_cv_as_cfi_directive = yes \
3280 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
3281 [Define 0/1 if your assembler supports CFI directives.])
3283 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
3284 gcc_GAS_CHECK_FEATURE([cfi personality directive],
3285 gcc_cv_as_cfi_personality_directive,,
3288 .cfi_personality 0, symbol
3290 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
3291 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
3292 [Define 0/1 if your assembler supports .cfi_personality.])
3294 gcc_GAS_CHECK_FEATURE([cfi sections directive],
3295 gcc_cv_as_cfi_sections_directive,,
3297 .cfi_sections .debug_frame, .eh_frame
3301 win32 | pe | cygwin* | mingw32*)
3302 # Need to check that we generated the correct relocation for the
3303 # .debug_frame section. This was fixed for binutils 2.21.
3304 gcc_cv_as_cfi_sections_directive=no
3305 if test "x$gcc_cv_objdump" != x; then
3306 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
3307 grep secrel > /dev/null; then
3308 gcc_cv_as_cfi_sections_directive=yes
3313 gcc_cv_as_cfi_sections_directive=yes
3316 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
3317 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
3318 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
3319 [Define 0/1 if your assembler supports .cfi_sections.])
3321 # GAS versions up to and including 2.11.0 may mis-optimize
3323 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,,
3330 .section .eh_frame,"aw",@progbits
3332 .4byte .LECIE1-.LSCIE1
3346 .4byte .LEFDE1-.LASFDE1
3348 .4byte .LASFDE1-__FRAME_BEGIN__
3356 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
3357 cat > conftest.lit <<EOF
3358 0000 10000000 00000000 017a0001 781a0004 .........z..x...
3359 0010 01000000 12000000 18000000 00000000 ................
3360 0020 08000000 04080000 0044 .........D @&t@
3362 cat > conftest.big <<EOF
3363 0000 00000010 00000000 017a0001 781a0004 .........z..x...
3364 0010 00000001 00000012 00000018 00000000 ................
3365 0020 00000008 04000000 0844 .........D @&t@
3367 # If the assembler didn't choke, and we can objdump,
3368 # and we got the correct data, then succeed.
3369 # The text in the here-document typically retains its unix-style line
3370 # endings, while the output of objdump will use host line endings.
3371 # Therefore, use diff -b for the comparisons.
3372 if test x$gcc_cv_objdump != x \
3373 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3374 | tail -3 > conftest.got \
3375 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3376 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3378 gcc_cv_as_eh_frame=yes
3379 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3380 gcc_cv_as_eh_frame=buggy
3382 # Uh oh, what do we do now?
3383 gcc_cv_as_eh_frame=no
3386 if test $gcc_cv_as_eh_frame = buggy; then
3387 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3388 [Define if your assembler mis-optimizes .eh_frame data.])
3391 # Test if the assembler supports the section flag 'e' or #exclude for
3392 # specifying an excluded section.
3393 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3397 if test $gcc_cv_as_section_exclude_e = no; then
3399 # Solaris as uses #exclude instead.
3403 conftest_s='.section "foo1", #exclude'
3405 i?86-*-solaris2* | x86_64-*-solaris2*)
3406 conftest_s='.section foo1, #exclude'
3411 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,
3415 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3416 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3417 [Define if your assembler supports specifying the exclude section flag.])
3419 # Test if the assembler supports the section flag 'R' for specifying
3420 # section with SHF_GNU_RETAIN.
3422 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3423 # assembler supports the section flag 'R', it doesn't mean that
3424 # Solairs ld supports it.
3426 gcc_cv_as_shf_gnu_retain=no
3429 gcc_GAS_CHECK_FEATURE([section 'R' flag], gcc_cv_as_shf_gnu_retain,
3431 [.section .foo,"awR",%progbits
3435 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_GNU_RETAIN,
3436 [`if test $gcc_cv_as_shf_gnu_retain = yes; then echo 1; else echo 0; fi`],
3437 [Define 0/1 if your assembler supports marking sections with SHF_GNU_RETAIN flag.])
3439 # Test if the assembler supports the section flag 'o' for specifying
3440 # section with link-order.
3442 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3443 # assembler supports the section flag 'o', it doesn't mean that
3444 # Solairs ld supports it.
3446 gcc_cv_as_section_link_order=no
3449 gcc_GAS_CHECK_FEATURE([section 'o' flag], gcc_cv_as_section_link_order,
3453 .section __patchable_function_entries,"awo",%progbits,.foo
3457 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_LINK_ORDER,
3458 [`if test $gcc_cv_as_section_link_order = yes; then echo 1; else echo 0; fi`],
3459 [Define 0/1 if your assembler supports 'o' flag in .section directive.])
3461 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3463 [.section .rodata.str, "aMS", @progbits, 1])
3464 if test $gcc_cv_as_shf_merge = no; then
3465 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3467 [.section .rodata.str, "aMS", %progbits, 1])
3469 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3470 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3471 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3473 gcc_cv_ld_aligned_shf_merge=yes
3475 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for
3477 sparc*-*-solaris2.11*)
3478 if test x"$gnu_ld" = xno \
3479 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then
3480 gcc_cv_ld_aligned_shf_merge=no
3484 AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE,
3485 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`],
3486 [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.])
3488 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive,,
3489 [.stabs "gcc2_compiled.",60,0,0,0],,
3490 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
3491 [Define if your assembler supports .stabs.])])
3493 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3494 gcc_cv_as_comdat_group,
3496 [.section .text,"axG",@progbits,.foo,comdat])
3497 if test $gcc_cv_as_comdat_group = yes; then
3498 gcc_cv_as_comdat_group_percent=no
3499 gcc_cv_as_comdat_group_group=no
3501 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3502 gcc_cv_as_comdat_group_percent,
3504 [.section .text,"axG",%progbits,.foo,comdat])
3505 if test $gcc_cv_as_comdat_group_percent = yes; then
3506 gcc_cv_as_comdat_group_group=no
3509 # Sun as uses a completely different syntax.
3514 .group foo,".text%foo",#comdat
3515 .section ".text%foo", #alloc,#execinstr,#progbits
3520 i?86-*-solaris2* | x86_64-*-solaris2*)
3522 .group foo,.text%foo,#comdat
3523 .section .text%foo, "ax", @progbits
3529 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3530 gcc_cv_as_comdat_group_group,
3534 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3535 gcc_cv_as_comdat_group_group=no
3539 if test x"$ld_is_gold" = xyes; then
3541 elif test $in_tree_ld = yes ; then
3543 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3544 && test $in_tree_ld_is_elf = yes; then
3547 elif echo "$ld_ver" | grep GNU > /dev/null; then
3549 if test 0"$ld_date" -lt 20050308; then
3550 if test -n "$ld_date"; then
3551 # If there was date string, but was earlier than 2005-03-08, fail
3553 elif test "$ld_vers_major" -lt 2; then
3555 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3562 *-*-solaris2.1[1-9]*)
3564 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3565 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3568 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3569 # least ld version 1.2267.
3570 if test "$ld_vers_major" -gt 1; then
3572 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3574 elif test "$ld_vers_minor" -ge 2267; then
3579 # Assume linkers other than GNU ld don't support COMDAT group.
3585 # Allow overriding the automatic COMDAT group tests above.
3586 AC_ARG_ENABLE(comdat,
3587 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3588 [comdat_group="$enable_comdat"])
3589 if test $comdat_group = no; then
3590 gcc_cv_as_comdat_group=no
3591 gcc_cv_as_comdat_group_percent=no
3592 gcc_cv_as_comdat_group_group=no
3594 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3595 [`if test $gcc_cv_as_comdat_group = yes \
3596 || test $gcc_cv_as_comdat_group_percent = yes \
3597 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3598 [Define 0/1 if your assembler and linker support COMDAT groups.])
3600 # Restrict this test to Solaris/x86: other targets define this statically.
3602 i?86-*-solaris2* | x86_64-*-solaris2*)
3603 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3604 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3608 # Full support for hidden thunks in linkonce sections only appeared in
3609 # Solaris 11/OpenSolaris.
3610 *-*-solaris2.1[[1-9]]*)
3618 AC_MSG_RESULT($hidden_linkonce)
3619 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3620 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3621 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3625 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3629 .loc 1 1 0 is_stmt 1],,
3630 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3631 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3633 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3634 gcc_cv_as_discriminator,,
3637 .loc 1 1 0 discriminator 1],,
3638 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3639 [Define if your assembler supports the .loc discriminator sub-directive.])])
3641 # Catch the newlib flag of the same name so we can gate GCC features on it.
3642 AC_ARG_ENABLE(newlib-nano-formatted-io,
3643 [AS_HELP_STRING([--enable-newlib-nano-formatted-io], [Use nano version
3645 [case "${enableval}" in
3649 AC_MSG_ERROR([unknown newlib-nano-formatted-io setting $enableval])
3653 # Thread-local storage - the check is heavily parameterized.
3660 .section ".tdata","awT",@progbits
3663 ldq $27,__tls_get_addr($29) !literal!1
3664 lda $16,foo($29) !tlsgd!1
3665 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3666 ldq $27,__tls_get_addr($29) !literal!2
3667 lda $16,foo($29) !tlsldm!2
3668 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3669 ldq $1,foo($29) !gotdtprel
3670 ldah $2,foo($29) !dtprelhi
3671 lda $3,foo($2) !dtprello
3672 lda $4,foo($29) !dtprel
3673 ldq $1,foo($29) !gottprel
3674 ldah $2,foo($29) !tprelhi
3675 lda $3,foo($2) !tprello
3676 lda $4,foo($29) !tprel'
3677 tls_as_opt=--fatal-warnings
3681 add_s r0,r0, @foo@tpoff'
3683 cris-*-*|crisv32-*-*)
3685 .section ".tdata","awT",@progbits
3690 tls_as_opt=--fatal-warnings
3694 .section ".tdata","awT",@progbits
3704 .section ".tdata","awT",@progbits
3708 addil LT%foo-$tls_gdidx$,gp
3709 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3712 addil LT%foo-$tls_ldidx$,gp
3714 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3715 addil LR%foo-$tls_dtpoff$,%ret0
3716 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3718 addil LT%foo-$tls_ieoff$,gp
3719 ldw RT%foo-$tls_ieoff$(%r1),%t2
3722 addil LR%foo-$tls_leoff$,%t1
3723 ldo RR%foo-$tls_leoff$(%r1),%t2'
3724 tls_as_opt=--fatal-warnings
3728 .section ".tdata","awT",%progbits
3737 i[34567]86-*-* | x86_64-*-*)
3739 i[34567]86-*-solaris2.* | x86_64-*-solaris2.*)
3746 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3748 .section .tdata,"awt",@progbits'
3751 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3752 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3756 .section ".tdata","awT",@progbits'
3758 tls_as_opt="--fatal-warnings"
3762 if test x$on_solaris = xyes; then
3764 yes) tls_as_opt="$tls_as_opt --32" ;;
3767 conftest_s="$conftest_s
3771 leal foo@tlsgd(,%ebx,1), %eax
3772 leal foo@tlsldm(%ebx), %eax
3773 leal foo@dtpoff(%eax), %edx
3774 movl foo@gottpoff(%ebx), %eax
3775 subl foo@gottpoff(%ebx), %eax
3776 addl foo@gotntpoff(%ebx), %eax
3777 movl foo@indntpoff, %eax
3778 movl \$foo@tpoff, %eax
3779 subl \$foo@tpoff, %eax
3780 leal foo@ntpoff(%ecx), %eax"
3783 if test x$on_solaris = xyes; then
3785 yes) tls_as_opt="$tls_as_opt --64" ;;
3786 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3789 conftest_s="$conftest_s
3793 leaq foo@tlsgd(%rip), %rdi
3794 leaq foo@tlsld(%rip), %rdi
3795 leaq foo@dtpoff(%rax), %rdx
3796 movq foo@gottpoff(%rip), %rax
3797 movq \$foo@tpoff, %rax"
3803 .section ".tdata","awT",@progbits
3806 addl r16 = @ltoff(@dtpmod(foo#)), gp
3807 addl r17 = @ltoff(@dtprel(foo#)), gp
3808 addl r18 = @ltoff(@tprel(foo#)), gp
3809 addl r19 = @dtprel(foo#), gp
3810 adds r21 = @dtprel(foo#), r13
3811 movl r23 = @dtprel(foo#)
3812 addl r20 = @tprel(foo#), gp
3813 adds r22 = @tprel(foo#), r13
3814 movl r24 = @tprel(foo#)'
3815 tls_as_opt=--fatal-warnings
3819 .section .tdata,"awT",@progbits
3823 addik r5,r20,x@TLSGD
3824 addik r5,r20,x@TLSLDM'
3825 tls_as_opt='--fatal-warnings'
3829 .section .tdata,"awT",@progbits
3833 addiu $4, $28, %tlsgd(x)
3834 addiu $4, $28, %tlsldm(x)
3835 lui $4, %dtprel_hi(x)
3836 addiu $4, $4, %dtprel_lo(x)
3837 lw $4, %gottprel(x)($28)
3838 lui $4, %tprel_hi(x)
3839 addiu $4, $4, %tprel_lo(x)'
3840 tls_as_opt='-32 --fatal-warnings'
3844 .section .tdata,"awT",@progbits
3849 move.l x@TLSGD(%a5),%a0
3850 move.l x@TLSLDM(%a5),%a0
3851 move.l x@TLSLDO(%a5),%a0
3852 move.l x@TLSIE(%a5),%a0
3853 move.l x@TLSLE(%a5),%a0'
3854 tls_as_opt='--fatal-warnings'
3858 .section ".tdata","awT",@progbits'
3859 tls_as_opt="--fatal-warnings"
3863 .section ".tdata","awT",%progbits
3867 add x0, x0, #:tlsgd_lo12:x
3870 tls_as_opt='--fatal-warnings'
3874 .section ".tdata","awT",@progbits
3877 l.movhi r3, tpoffha(foo)
3879 l.lwz r4, tpofflo(foo)(r3)'
3880 tls_as_opt=--fatal-warnings
3884 .extern __get_tpointer
3900 .section ".tdata","awT",@progbits
3908 addi 3,2,ld0@got@tlsgd
3914 addi 3,2,x1@got@tlsld
3920 addis 9,3,x2@dtprel@ha
3921 addi 9,9,x2@dtprel@l
3924 ld 9,x3@got@dtprel(2)
3928 tls_as_opt="-a64 --fatal-warnings"
3932 .section ".tdata","awT",@progbits
3940 addi 3,31,ld0@got@tlsgd
3942 addi 3,31,x1@got@tlsld
3945 addis 9,3,x2@dtprel@ha
3946 addi 9,9,x2@dtprel@l
3947 lwz 9,x3@got@tprel(31)
3950 addis 9,2,x2@tprel@ha
3951 addi 9,9,x2@tprel@l'
3952 tls_as_opt="-a32 --fatal-warnings"
3956 .section .tdata,"awT",@progbits
3960 call __tls_get_addr'
3961 tls_as_opt='--fatal-warnings'
3965 .section ".tdata","awT",@progbits
3974 l %r1,foo@GOTNTPOFF(%r12)
3975 l %r1,0(%r1):tls_load:foo
3976 bas %r14,0(%r1,%r13):tls_gdcall:foo
3977 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3978 tls_as_opt="-m31 --fatal-warnings"
3982 .section ".tdata","awT",@progbits
3990 lg %r1,foo@GOTNTPOFF(%r12)
3991 larl %r1,foo@INDNTPOFF
3992 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3993 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3994 tls_as_opt="-m64 -Aesame --fatal-warnings"
3996 sh-*-* | sh[123456789lbe]*-*-*)
3998 .section ".tdata","awT",@progbits
4006 tls_as_opt=--fatal-warnings
4010 sparc*-sun-solaris2.*)
4017 if test x$on_solaris = xyes && test x$gas_flag = xno; then
4019 .section ".tdata",#alloc,#write,#tls'
4022 .section ".tdata","awT",@progbits'
4023 tls_as_opt="-32 --fatal-warnings"
4025 conftest_s="$conftest_s
4028 sethi %tgd_hi22(foo), %o0
4029 add %o0, %tgd_lo10(foo), %o1
4030 add %l7, %o1, %o0, %tgd_add(foo)
4031 call __tls_get_addr, %tgd_call(foo)
4032 sethi %tldm_hi22(foo), %l1
4033 add %l1, %tldm_lo10(foo), %l2
4034 add %l7, %l2, %o0, %tldm_add(foo)
4035 call __tls_get_addr, %tldm_call(foo)
4036 sethi %tldo_hix22(foo), %l3
4037 xor %l3, %tldo_lox10(foo), %l4
4038 add %o0, %l4, %l5, %tldo_add(foo)
4039 sethi %tie_hi22(foo), %o3
4040 add %o3, %tie_lo10(foo), %o3
4041 ld [%l7 + %o3], %o2, %tie_ld(foo)
4042 add %g7, %o2, %o4, %tie_add(foo)
4043 sethi %tle_hix22(foo), %l1
4044 xor %l1, %tle_lox10(foo), %o5
4045 ld [%g7 + %o5], %o1"
4049 .section ".tdata","awT",@progbits
4052 addli r0, zero, tls_gd(foo)
4053 auli r0, zero, tls_gd_ha16(foo)
4054 addli r0, r0, tls_gd_lo16(foo)
4056 addli r0, zero, tls_ie(foo)
4057 auli r0, r0, tls_ie_ha16(foo)
4058 addli r0, r0, tls_ie_lo16(foo)'
4059 tls_as_opt="--fatal-warnings"
4063 .section ".tdata","awT",@progbits
4066 shl16insli r0, zero, hw0_last_tls_gd(foo)
4067 shl16insli r0, zero, hw1_last_tls_gd(foo)
4068 shl16insli r0, r0, hw0_tls_gd(foo)
4070 shl16insli r0, zero, hw1_last_tls_ie(foo)
4071 shl16insli r0, r0, hw0_tls_ie(foo)'
4072 tls_as_opt="--fatal-warnings"
4076 .section ".tdata","awT",@progbits
4079 movi a8, foo@TLSFUNC
4080 movi a10, foo@TLSARG
4081 callx8.tls a8, foo@TLSCALL'
4086 if test "x$enable_tls" = xno ; then
4087 : # TLS explicitly disabled.
4088 elif test "x$enable_tls" = xyes ; then
4089 set_have_as_tls=yes # TLS explicitly enabled.
4090 elif test -z "$conftest_s"; then
4091 : # If we don't have a check, assume no support.
4093 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
4094 [$tls_as_opt], [$conftest_s],,
4095 [set_have_as_tls=yes])
4097 if test $set_have_as_tls = yes ; then
4098 AC_DEFINE(HAVE_AS_TLS, 1,
4099 [Define if your assembler and linker support thread-local storage.])
4102 # Target-specific assembler checks.
4104 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
4105 gcc_cv_ld_static_dynamic=no
4106 gcc_cv_ld_static_option='-Bstatic'
4107 gcc_cv_ld_dynamic_option='-Bdynamic'
4108 if test $in_tree_ld = yes ; then
4109 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
4110 gcc_cv_ld_static_dynamic=yes
4112 elif test x$gcc_cv_ld != x; then
4113 # Check if linker supports -Bstatic/-Bdynamic option
4114 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
4115 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
4116 gcc_cv_ld_static_dynamic=yes
4119 # AIX ld uses -b flags
4120 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
4121 gcc_cv_ld_static_dynamic=yes
4122 gcc_cv_ld_static_option="-bstatic"
4123 gcc_cv_ld_dynamic_option="-bdynamic"
4125 # HP-UX ld uses -a flags to select between shared and archive.
4127 if test x"$gnu_ld" = xno; then
4128 gcc_cv_ld_static_dynamic=yes
4129 gcc_cv_ld_static_option="-aarchive_shared"
4130 gcc_cv_ld_dynamic_option="-adefault"
4133 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
4135 gcc_cv_ld_static_dynamic=yes
4140 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
4141 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
4142 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
4143 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
4144 [Define to the linker option to disable use of shared objects.])
4145 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
4146 [Define to the linker option to enable use of shared objects.])
4148 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
4150 AC_MSG_CHECKING(linker --version-script option)
4151 gcc_cv_ld_version_script=no
4152 ld_version_script_option=''
4153 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4154 gcc_cv_ld_version_script=yes
4155 ld_version_script_option='--version-script'
4156 elif test x$gcc_cv_ld != x; then
4158 # Solaris 2 ld always supports -M. It also supports a subset of
4159 # --version-script since Solaris 11.4, but requires
4160 # -z gnu-version-script-compat to activate.
4162 gcc_cv_ld_version_script=yes
4163 ld_version_script_option='-M'
4167 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4168 AC_MSG_RESULT($gcc_cv_ld_version_script)
4169 AC_SUBST(ld_version_script_option)
4171 AC_MSG_CHECKING(linker soname option)
4173 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4174 gcc_cv_ld_soname=yes
4175 ld_soname_option='-soname'
4176 elif test x$gcc_cv_ld != x; then
4179 gcc_cv_ld_soname=yes
4180 ld_soname_option='-install_name'
4182 # Solaris 2 ld always supports -h. It also supports --soname for GNU
4183 # ld compatiblity since some Solaris 10 update.
4185 gcc_cv_ld_soname=yes
4186 ld_soname_option='-h'
4190 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4191 AC_MSG_RESULT($gcc_cv_ld_soname)
4192 AC_SUBST(ld_soname_option)
4194 if test x"$demangler_in_ld" = xyes; then
4195 AC_MSG_CHECKING(linker --demangle support)
4196 gcc_cv_ld_demangle=no
4197 if test $in_tree_ld = yes; then
4198 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
4199 gcc_cv_ld_demangle=yes
4201 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
4202 # Check if the GNU linker supports --demangle option
4203 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
4204 gcc_cv_ld_demangle=yes
4207 if test x"$gcc_cv_ld_demangle" = xyes; then
4208 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
4209 [Define if your linker supports --demangle option.])
4211 AC_MSG_RESULT($gcc_cv_ld_demangle)
4214 AC_MSG_CHECKING(linker plugin support)
4216 if test -f liblto_plugin.la; then
4217 save_ld_ver="$ld_ver"
4218 save_ld_vers_major="$ld_vers_major"
4219 save_ld_vers_minor="$ld_vers_minor"
4220 save_ld_is_gold="$ld_is_gold"
4224 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
4226 # FIXME: ld_is_gold?
4227 ld_vers_major="$gcc_cv_gld_major_version"
4228 ld_vers_minor="$gcc_cv_gld_minor_version"
4230 # Determine plugin linker version.
4231 # FIXME: Partial duplicate from above, generalize.
4233 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
4234 if echo "$ld_ver" | grep GNU > /dev/null; then
4235 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
4237 ld_vers=`echo $ld_ver | sed -n \
4238 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
4240 ld_vers=`echo $ld_ver | sed -n \
4241 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
4243 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
4244 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
4249 # Determine plugin support.
4250 if echo "$ld_ver" | grep GNU > /dev/null; then
4251 # Require GNU ld or gold 2.21+ for plugin support by default.
4252 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
4254 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
4255 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
4260 ld_ver="$save_ld_ver"
4261 ld_vers_major="$save_ld_vers_major"
4262 ld_vers_minor="$save_ld_vers_minor"
4263 ld_is_gold="$save_ld_is_gold"
4265 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
4266 [Define to the level of your linker's plugin support.])
4267 AC_MSG_RESULT($gcc_cv_lto_plugin)
4269 # Target OS-specific assembler checks.
4271 case "$target_os" in
4273 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
4274 gcc_cv_as_mmacosx_version_min,
4275 [-mmacosx-version-min=10.1], [.text],,
4276 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
4277 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
4281 # Target CPU-specific assembler checks.
4285 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,
4286 [-mabi=lp64], [.text],,,)
4287 if test x$gcc_cv_as_aarch64_mabi = xyes; then
4288 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
4289 [Define if your assembler supports the -mabi option.])
4291 if test x$with_abi = xilp32; then
4292 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4293 Upgrade the Assembler.])
4295 if test x"$with_multilib_list" = xdefault; then
4296 TM_MULTILIB_CONFIG=lp64
4298 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
4299 for aarch64_multilib in ${aarch64_multilibs}; do
4300 case ${aarch64_multilib} in
4302 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4303 Upgrade the Assembler.])
4311 # Check if we have binutils support for relocations types needed by -fpic
4312 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,
4315 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
4316 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
4317 [Define if your assembler supports relocs needed by -fpic.])])
4318 # Enable Branch Target Identification Mechanism and Return Address
4319 # Signing by default.
4320 AC_ARG_ENABLE(standard-branch-protection,
4322 AS_HELP_STRING([--enable-standard-branch-protection],
4323 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4324 AS_HELP_STRING([--disable-standard-branch-protection],
4325 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4330 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1"
4335 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
4336 Valid choices are 'yes' and 'no'.])
4341 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
4342 AC_ARG_ENABLE(fix-cortex-a53-835769,
4344 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
4345 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4346 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
4347 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4352 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4357 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4358 Valid choices are 'yes' and 'no'.])
4364 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4365 AC_ARG_ENABLE(fix-cortex-a53-843419,
4367 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4368 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4369 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4370 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4375 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4380 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4381 Valid choices are 'yes' and 'no'.])
4389 # All TARGET_ABI_OSF targets.
4390 alpha*-*-linux* | alpha*-*-*bsd*)
4391 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4392 gcc_cv_as_alpha_explicit_relocs,,
4395 extbl $3, $2, $3 !lituse_bytoff!1
4396 ldq $2, a($29) !literal!1
4397 ldq $4, b($29) !literal!2
4398 ldq_u $3, 0($2) !lituse_base!1
4399 ldq $27, f($29) !literal!5
4400 jsr $26, ($27), f !lituse_jsr!5
4401 ldah $29, 0($26) !gpdisp!3
4402 lda $0, c($29) !gprel
4403 ldah $1, d($29) !gprelhigh
4404 lda $1, d($1) !gprellow
4405 lda $29, 0($29) !gpdisp!3],,
4406 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4407 [Define if your assembler supports explicit relocations.])])
4408 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4409 gcc_cv_as_alpha_jsrdirect_relocs,,
4412 ldq $27, a($29) !literal!1
4413 jsr $26, ($27), a !lituse_jsrdirect!1],,
4414 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4415 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4419 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,
4420 [--mlink-relax], [.text],,
4421 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4422 [Define if your avr assembler supports --mlink-relax option.])])
4424 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,
4426 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4427 [Define if your avr assembler supports -mrmw option.])])
4429 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4430 gcc_cv_as_avr_mgccisr,
4436 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4437 [Define if your avr assembler supports -mgcc-isr option.])])
4439 # Check how default linker description file implements .rodata for
4440 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4441 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4442 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4443 cat > conftest.s <<EOF
4444 .section .rodata,"a",@progbits
4446 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4451 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4452 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4453 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4454 if test -s conftest.nm
4456 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4458 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4459 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4461 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4462 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4463 cat conftest.nm >&AS_MESSAGE_LOG_FD
4464 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4465 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4468 AC_MSG_RESULT(test failed)
4469 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4470 cat conftest.s >&AS_MESSAGE_LOG_FD
4471 AC_MSG_WARN([[see `config.log' for details]])
4473 rm -f conftest.s conftest.o conftest.elf conftest.nm
4477 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4478 gcc_cv_as_cris_no_mul_bug,
4479 [-no-mul-bug-abort], [.text],,
4480 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4481 [Define if your assembler supports the -no-mul-bug-abort option.])])
4485 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,
4487 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4488 [Define if your assembler supports -relax option.])])
4490 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4491 gcc_cv_as_sparc_gotdata_op,
4498 sethi %gdop_hix22(foo), %g1
4499 xor %g1, %gdop_lox10(foo), %g1
4500 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4501 [if test x$gcc_cv_ld != x \
4502 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4503 if test x$gcc_cv_objdump != x; then
4504 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4505 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4506 gcc_cv_as_sparc_gotdata_op=no
4508 gcc_cv_as_sparc_gotdata_op=yes
4513 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4514 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4516 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4517 gcc_cv_as_sparc_ua_pcrel,
4525 .uaword %r_disp32(foo)],
4526 [if test x$gcc_cv_ld != x \
4527 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4528 gcc_cv_as_sparc_ua_pcrel=yes
4531 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4532 [Define if your assembler and linker support unaligned PC relative relocs.])
4534 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4535 gcc_cv_as_sparc_ua_pcrel_hidden,
4540 .uaword %r_disp32(foo)
4541 .byte 0x32, 0x33, 0x34
4546 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4547 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4548 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4549 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4550 if $gcc_cv_objdump -R conftest 2> /dev/null \
4551 | grep 'DISP32' > /dev/null 2>&1; then
4554 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4558 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4559 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4560 ]) # unaligned pcrel relocs
4562 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4563 gcc_cv_as_sparc_offsetable_lo10,
4566 or %g1, %lo(ab) + 12, %g1
4567 or %g1, %lo(ab + 12), %g1],
4568 [if test x$gcc_cv_objdump != x \
4569 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4570 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4571 gcc_cv_as_sparc_offsetable_lo10=yes
4573 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4574 [Define if your assembler supports offsetable %lo().])])
4576 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4577 gcc_cv_as_sparc_fmaf,
4580 .register %g2, #scratch
4581 .register %g3, #scratch
4583 fmaddd %f0, %f2, %f4, %f6
4584 addxccc %g1, %g2, %g3
4585 fsrl32 %f2, %f4, %f8
4586 fnaddd %f10, %f12, %f14],,
4587 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4588 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4590 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4591 gcc_cv_as_sparc_sparc4,
4594 .register %g2, #scratch
4595 .register %g3, #scratch
4598 1: cwbneg %g2, %g3, 1f
4601 aes_kexpand0 %f4, %f6, %f8
4602 des_round %f38, %f40, %f42, %f44
4603 camellia_f %f54, %f56, %f58, %f60
4604 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4605 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4606 [Define if your assembler supports SPARC4 instructions.])])
4608 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4609 gcc_cv_as_sparc_sparc5,
4612 .register %g2, #scratch
4613 .register %g3, #scratch
4616 fpadd8 %f0, %f2, %f4],,
4617 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4618 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4620 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4621 gcc_cv_as_sparc_sparc6,
4624 .register %g2, #scratch
4625 .register %g3, #scratch
4628 fpsll64x %f0, %f2, %f4],,
4629 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4630 [Define if your assembler supports SPARC6 instructions.])])
4632 gcc_GAS_CHECK_FEATURE([LEON instructions],
4633 gcc_cv_as_sparc_leon,
4636 .register %g2, #scratch
4637 .register %g3, #scratch
4641 casa [[%g2]] 0xb, %g3, %g1],,
4642 [AC_DEFINE(HAVE_AS_LEON, 1,
4643 [Define if your assembler supports LEON instructions.])])
4647 i[34567]86-*-* | x86_64-*-*)
4651 # Full C++ conformance when using a shared libstdc++-v3 requires some
4652 # support from the Cygwin DLL, which in more recent versions exports
4653 # wrappers to aid in interposing and redirecting operators new, delete,
4654 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4655 # are configuring for a version of Cygwin that exports the wrappers.
4656 if test x$host = x$target && test x$host_cpu = xi686; then
4657 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4659 # Can't check presence of libc functions during cross-compile, so
4660 # we just have to assume we're building for an up-to-date target.
4661 gcc_ac_cygwin_dll_wrappers=yes
4663 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4664 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4665 [Define if you want to generate code by default that assumes that the
4666 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4669 cygwin* | pe | mingw32*)
4670 # Recent binutils allows the three-operand form of ".comm" on PE. This
4671 # definition is used unconditionally to initialise the default state of
4672 # the target option variable that governs usage of the feature.
4673 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,,
4675 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4676 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4677 [Define if your assembler supports specifying the alignment
4678 of objects allocated using the GAS .comm command.])
4679 # Used for DWARF 2 in PE
4680 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4681 gcc_cv_as_ix86_pe_secrel32,,
4686 [if test x$gcc_cv_ld != x \
4687 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4688 gcc_cv_as_ix86_pe_secrel32=yes
4691 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4692 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4693 # Test if the assembler supports the extended form of the .section
4694 # directive that specifies section alignment. LTO support uses this,
4695 # but normally only after installation, so we warn but don't fail the
4696 # configure if LTO is enabled but the assembler does not support it.
4697 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4698 -fatal-warnings,[.section lto_test,"dr0"])
4699 if test x$gcc_cv_as_section_has_align != xyes; then
4700 case ",$enable_languages," in
4702 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4709 darwin2* | darwin19*)
4710 gcc_GAS_CHECK_FEATURE([llvm assembler x86-pad-for-align option],
4711 gcc_cv_as_mllvm_x86_pad_for_align,
4712 [-mllvm -x86-pad-for-align=false], [.text],,
4713 [AC_DEFINE(HAVE_AS_MLLVM_X86_PAD_FOR_ALIGN, 1,
4714 [Define if your Mac OS X assembler supports -mllvm -x86-pad-for-align=false.])])
4718 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,
4719 [-xbrace_comment=no], [.text],,
4720 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4721 [Define if your assembler supports -xbrace_comment option.])])
4723 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4724 gcc_cv_as_ix86_filds,,
4725 [filds (%ebp); fists (%ebp)],,
4726 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4727 [Define if your assembler uses filds and fists mnemonics.])])
4729 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4730 gcc_cv_as_ix86_fildq,,
4731 [fildq (%ebp); fistpq (%ebp)],,
4732 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4733 [Define if your assembler uses fildq and fistq mnemonics.])])
4735 gcc_GAS_CHECK_FEATURE([cmov syntax],
4736 gcc_cv_as_ix86_cmov_sun_syntax,,
4737 [cmovl.l %edx, %eax],,
4738 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4739 [Define if your assembler supports the Sun syntax for cmov.])])
4741 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4742 gcc_cv_as_ix86_ffreep,,
4744 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4745 [Define if your assembler supports the ffreep mnemonic.])])
4747 gcc_GAS_CHECK_FEATURE([.quad directive],
4748 gcc_cv_as_ix86_quad,,
4750 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4751 [Define if your assembler supports the .quad directive.])])
4753 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4754 gcc_cv_as_ix86_sahf,,
4757 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4758 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4760 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4761 gcc_cv_as_ix86_interunit_movq,,
4765 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4766 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4767 [Define if your assembler supports interunit movq mnemonic.])
4769 gcc_GAS_CHECK_FEATURE([hle prefixes],
4770 gcc_cv_as_ix86_hle,,
4771 [lock xacquire cmpxchg %esi, (%ecx)],,
4772 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4773 [Define if your assembler supports HLE prefixes.])])
4775 gcc_GAS_CHECK_FEATURE([swap suffix],
4776 gcc_cv_as_ix86_swap,,
4777 [movl.s %esp, %ebp],,
4778 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4779 [Define if your assembler supports the swap suffix.])])
4781 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4782 gcc_cv_as_ix86_diff_sect_delta,,
4790 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4791 [Define if your assembler supports the subtraction of symbols in different sections.])])
4793 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4794 gcc_cv_as_ix86_rep_lock_prefix,,
4800 lock addl %edi, (%eax,%esi)
4801 lock orl $0, (%esp)],,
4802 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4803 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4805 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4806 gcc_cv_as_ix86_ud2,,
4808 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4809 [Define if your assembler supports the 'ud2' mnemonic.])])
4811 # Enforce 32-bit output with gas and gld.
4812 if test x$gas = xyes; then
4813 as_ix86_gas_32_opt="--32"
4815 if echo "$ld_ver" | grep GNU > /dev/null; then
4816 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4817 ld_ix86_gld_32_opt="-melf_i386_sol2"
4819 ld_ix86_gld_32_opt="-melf_i386"
4823 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4824 gcc_cv_as_ix86_tlsgdplt,
4825 [$as_ix86_gas_32_opt],
4826 [call tls_gd@tlsgdplt],
4827 [if test x$gcc_cv_ld != x \
4828 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4829 gcc_cv_as_ix86_tlsgdplt=yes
4832 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4833 [Define if your assembler and linker support @tlsgdplt.])])
4836 .section .tdata,"aw'$tls_section_flag'",@progbits
4838 .section .text,"ax",@progbits
4839 call tls_ld@tlsldmplt'
4841 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4842 gcc_cv_as_ix86_tlsldmplt,
4843 [$as_ix86_gas_32_opt],
4845 [if test x$gcc_cv_ld != x \
4846 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4847 gcc_cv_as_ix86_tlsldmplt=yes
4850 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4851 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4852 [Define to 1 if your assembler and linker support @tlsldmplt.])
4855 .section .text,"ax",@progbits
4857 .type _start, @function
4859 leal value@tlsldm(%ebx), %eax
4860 call ___tls_get_addr@plt
4862 .section .tdata,"aw'$tls_section_flag'",@progbits
4863 .type value, @object
4865 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4866 gcc_cv_as_ix86_tlsldm,
4867 [$as_ix86_gas_32_opt],
4869 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4870 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4871 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4872 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4873 gcc_cv_as_ix86_tlsldm=yes
4877 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4878 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4879 [Define to 1 if your assembler and linker support @tlsldm.])
4890 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4891 gcc_cv_as_ix86_got32x,
4892 [$as_ix86_gas_32_opt],
4894 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4895 && test x$gcc_cv_readelf != x \
4896 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4897 | grep R_386_GOT32X > /dev/null 2>&1 \
4898 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4899 if $gcc_cv_objdump -dw conftest 2>&1 \
4900 | grep 0xffffff > /dev/null 2>&1; then
4901 gcc_cv_as_ix86_got32x=no
4903 gcc_cv_as_ix86_got32x=yes
4907 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4908 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4909 [Define 0/1 if your assembler and linker support @GOT.])
4911 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4912 gcc_cv_as_ix86_gotoff_in_data,
4913 [$as_ix86_gas_32_opt],
4919 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4920 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4921 [Define true if the assembler supports '.long foo@GOTOFF'.])
4924 .section .text,"ax",@progbits
4926 .type _start, @function
4928 leal ld@tlsldm(%ecx), %eax
4929 call *___tls_get_addr@GOT(%ecx)
4930 leal gd@tlsgd(%ecx), %eax
4931 call *___tls_get_addr@GOT(%ecx)
4933 .section .tdata,"aw'$tls_section_flag'",@progbits
4941 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4942 gcc_cv_as_ix86_tls_get_addr_via_got,
4943 [$as_ix86_gas_32_opt],
4945 [if test x$gcc_cv_ld != x \
4946 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4947 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4950 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4951 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4952 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4956 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4957 gcc_cv_as_ia64_ltoffx_ldxmov_relocs,,
4959 addl r15 = @ltoffx(x#), gp
4961 ld8.mov r16 = [[r15]], x#
4963 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4964 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4972 gcc_GAS_CHECK_FEATURE([.machine directive support],
4973 gcc_cv_as_machine_directive,,
4974 [ .machine ppc7400])
4975 if test x$gcc_cv_as_machine_directive != xyes; then
4976 echo "*** This target requires an assembler supporting \".machine\"" >&2
4977 echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4978 test x$build = x$target && exit 1
4984 *-*-aix*) conftest_s=' .machine "pwr5"
4987 *-*-darwin*) conftest_s=' .text
4989 *) conftest_s=' .machine power4
4994 gcc_GAS_CHECK_FEATURE([mfcr field support],
4995 gcc_cv_as_powerpc_mfcrf,,
4997 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4998 [Define if your assembler supports mfcr field.])])
5001 *-*-aix*) conftest_s=' .csect .text[[PR]]
5003 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
5007 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
5008 *) conftest_s=' .text
5010 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
5013 gcc_GAS_CHECK_FEATURE([rel16 relocs],
5014 gcc_cv_as_powerpc_rel16, -a32,
5016 [AC_DEFINE(HAVE_AS_REL16, 1,
5017 [Define if your assembler supports R_PPC_REL16 relocs.])])
5020 *-*-aix*) conftest_s=' .machine "pwr7"
5023 *) conftest_s=' .machine power7
5028 gcc_GAS_CHECK_FEATURE([vector-scalar support],
5029 gcc_cv_as_powerpc_vsx, -a32,
5031 [AC_DEFINE(HAVE_AS_VSX, 1,
5032 [Define if your assembler supports VSX instructions.])])
5034 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5035 gcc_cv_as_powerpc_gnu_attribute,,
5036 [.gnu_attribute 4,1],,
5037 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5038 [Define if your assembler supports .gnu_attribute.])])
5040 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
5041 gcc_cv_as_powerpc_entry_markers,-a64 --fatal-warnings,
5042 [ .reloc .,R_PPC64_ENTRY; nop],,
5043 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
5044 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
5046 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
5047 gcc_cv_as_powerpc_pltseq_markers,-a32 --fatal-warnings,
5048 [ .reloc .,R_PPC_PLTSEQ; nop],,
5049 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
5050 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
5054 gcc_GAS_CHECK_FEATURE([AIX .ref support],
5056 [ .csect stuff[[rw]]
5062 [AC_DEFINE(HAVE_AS_REF, 1,
5063 [Define if your assembler supports .ref])])
5065 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
5066 gcc_cv_as_aix_dwloc,,
5071 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
5072 [Define if your assembler supports AIX debug frame section label reference.])])
5078 gcc_GAS_CHECK_FEATURE([explicit relocation support],
5079 gcc_cv_as_mips_explicit_relocs,,
5080 [ lw $4,%gp_rel(foo)($4)],,
5081 [if test x$target_cpu_default = x
5082 then target_cpu_default=MASK_EXPLICIT_RELOCS
5083 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
5086 gcc_GAS_CHECK_FEATURE([-mno-shared support],
5087 gcc_cv_as_mips_no_shared,[-mno-shared], [nop],,
5088 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
5089 [Define if the assembler understands -mno-shared.])])
5091 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5092 gcc_cv_as_mips_gnu_attribute,,
5093 [.gnu_attribute 4,1],,
5094 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5095 [Define if your assembler supports .gnu_attribute.])])
5097 gcc_GAS_CHECK_FEATURE([.module support],
5098 gcc_cv_as_mips_dot_module,[-32],
5101 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
5102 [Define if your assembler supports .module.])])
5103 if test x$gcc_cv_as_mips_dot_module = xno \
5104 && test x$with_fp_32 != x; then
5106 [Requesting --with-fp-32= requires assembler support for .module.])
5109 gcc_GAS_CHECK_FEATURE([.micromips support],
5110 gcc_cv_as_micromips_support,[--fatal-warnings],
5112 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
5113 [Define if your assembler supports the .set micromips directive])])
5115 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5116 gcc_cv_as_mips_dtprelword,,
5117 [.section .tdata,"awT",@progbits
5121 .dtprelword x+0x8000],,
5122 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5123 [Define if your assembler supports .dtprelword.])])
5125 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
5126 gcc_cv_as_mips_dspr1_mult,,
5136 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
5137 [Define if your assembler supports DSPR1 mult.])])
5139 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
5140 gcc_cv_as_ld_jalr_reloc=no
5141 if test $gcc_cv_as_mips_explicit_relocs = yes; then
5142 if test $in_tree_ld = yes ; then
5143 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
5144 && test $in_tree_ld_is_elf = yes; then
5145 gcc_cv_as_ld_jalr_reloc=yes
5147 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
5148 echo ' .ent x' > conftest.s
5149 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
5150 echo ' lw $25,%call16(y)($28)' >> conftest.s
5151 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
5152 echo '1: jalr $25' >> conftest.s
5153 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
5154 echo '1: jalr $25' >> conftest.s
5155 echo ' .end x' >> conftest.s
5156 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
5157 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
5158 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
5159 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
5160 gcc_cv_as_ld_jalr_reloc=yes
5166 if test $gcc_cv_as_ld_jalr_reloc = yes; then
5167 if test x$target_cpu_default = x; then
5168 target_cpu_default=MASK_RELAX_PIC_CALLS
5170 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
5173 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
5175 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
5176 [gcc_cv_ld_mips_personality_relaxation],
5177 [gcc_cv_ld_mips_personality_relaxation=no
5178 if test $in_tree_ld = yes ; then
5179 if test "$gcc_cv_gld_major_version" -eq 2 \
5180 -a "$gcc_cv_gld_minor_version" -ge 21 \
5181 -o "$gcc_cv_gld_major_version" -gt 2; then
5182 gcc_cv_ld_mips_personality_relaxation=yes
5184 elif test x$gcc_cv_as != x \
5185 -a x$gcc_cv_ld != x \
5186 -a x$gcc_cv_readelf != x ; then
5187 cat > conftest.s <<EOF
5189 .cfi_personality 0x80,indirect_ptr
5196 .section .data,"aw",@progbits
5200 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
5201 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
5202 if $gcc_cv_readelf -d conftest 2>&1 \
5203 | grep TEXTREL > /dev/null 2>&1; then
5205 elif $gcc_cv_readelf --relocs conftest 2>&1 \
5206 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
5209 gcc_cv_ld_mips_personality_relaxation=yes
5213 rm -f conftest.s conftest.o conftest])
5214 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
5215 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
5216 [Define if your linker can relax absolute .eh_frame personality
5217 pointers into PC-relative form.])
5220 gcc_GAS_CHECK_FEATURE([-mnan= support],
5223 [AC_DEFINE(HAVE_AS_NAN, 1,
5224 [Define if the assembler understands -mnan=.])])
5225 if test x$gcc_cv_as_mips_nan = xno \
5226 && test x$with_nan != x; then
5228 [Requesting --with-nan= requires assembler support for -mnan=])
5232 # Earlier GAS versions generically support .gnu_attribute, but the
5233 # msp430 assembler will not do anything with it.
5234 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5235 gcc_cv_as_msp430_gnu_attribute,,
5236 [.gnu_attribute 4,1],,
5237 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5238 [Define if your assembler supports .gnu_attribute.])])
5239 gcc_GAS_CHECK_FEATURE([.mspabi_attribute support],
5240 gcc_cv_as_msp430_mspabi_attribute,,
5241 [.mspabi_attribute 4,2],,
5242 [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1,
5243 [Define if your assembler supports .mspabi_attribute.])])
5244 if test x$enable_newlib_nano_formatted_io = xyes; then
5245 AC_DEFINE(HAVE_NEWLIB_NANO_FORMATTED_IO, 1, [Define if GCC has been
5246 configured with --enable-newlib-nano-formatted-io.])
5250 # Versions 2.33 and earlier lacked support for the %gotoff relocation
5251 # syntax that is documented in the ABI specification.
5252 gcc_GAS_CHECK_FEATURE([support for %gotoff relocations in constant data],
5253 gcc_cv_as_nios2_gotoff_relocation,,
5256 .long %gotoff(foo)],,
5257 [AC_DEFINE(HAVE_AS_NIOS2_GOTOFF_RELOCATION, 1,
5258 [Define if your assembler supports %gotoff relocation syntax.])])
5261 gcc_GAS_CHECK_FEATURE([.attribute support],
5262 gcc_cv_as_riscv_attribute,,
5263 [.attribute stack_align,4],,
5264 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1,
5265 [Define if your assembler supports .attribute.])])
5266 gcc_GAS_CHECK_FEATURE([-misa-spec= support],
5267 gcc_cv_as_riscv_isa_spec,
5269 [AC_DEFINE(HAVE_AS_MISA_SPEC, 1,
5270 [Define if the assembler understands -misa-spec=.])])
5271 gcc_GAS_CHECK_FEATURE([-march=rv32i_zifencei support],
5272 gcc_cv_as_riscv_march_zifencei,
5273 [-march=rv32i_zifencei],,,
5274 [AC_DEFINE(HAVE_AS_MARCH_ZIFENCEI, 1,
5275 [Define if the assembler understands -march=rv*_zifencei.])])
5278 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5279 gcc_cv_as_s390_gnu_attribute,,
5280 [.gnu_attribute 8,1],,
5281 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5282 [Define if your assembler supports .gnu_attribute.])])
5283 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
5284 gcc_cv_as_s390_machine_machinemode,,
5289 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
5290 [Define if your assembler supports .machine and .machinemode.])])
5291 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
5292 gcc_cv_as_s390_architecture_modifiers,,
5293 [ .machine z13+vx ],,
5294 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
5295 [Define if your assembler supports architecture modifiers.])])
5296 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
5297 gcc_cv_as_s390_vector_loadstore_alignment_hints,,
5298 [ vl %v24,0(%r15),3 ],,
5299 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
5300 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
5301 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints on z13],
5302 gcc_cv_as_s390_vector_loadstore_alignment_hints_on_z13, [-mzarch -march=z13],
5303 [ vl %v24,0(%r15),3 ],,
5304 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS_ON_Z13, 1,
5305 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument on z13.])])
5310 # Mips and HP-UX need the GNU assembler.
5311 # Linux on IA64 might be able to use the Intel assembler.
5314 mips*-*-* | *-*-hpux* )
5315 if test x$gas_flag = xyes \
5316 || test x"$host" != x"$build" \
5317 || test ! -x "$gcc_cv_as" \
5318 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
5321 echo "*** This configuration requires the GNU assembler" >&2
5327 # This tests if the assembler supports two registers for global_load functions
5328 # (like in LLVM versions <12) or one register (like in LLVM 12).
5331 AC_MSG_CHECKING(assembler fix for global_load functions)
5332 gcc_cv_as_gcn_global_load_fixed=yes
5333 if test x$gcc_cv_as != x; then
5334 cat > conftest.s <<EOF
5335 global_store_dwordx2 v[[1:2]], v[[4:5]], s[[14:15]]
5337 if $gcc_cv_as -triple=amdgcn--amdhsa -filetype=obj -mcpu=gfx900 -o conftest.o conftest.s > /dev/null 2>&1; then
5338 gcc_cv_as_gcn_global_load_fixed=no
5340 rm -f conftest.s conftest.o conftest
5342 global_load_fixed=`if test x$gcc_cv_as_gcn_global_load_fixed = xyes; then echo 1; else echo 0; fi`
5343 AC_DEFINE_UNQUOTED(HAVE_GCN_ASM_GLOBAL_LOAD_FIXED, $global_load_fixed,
5344 [Define if your assembler has fixed global_load functions.])
5345 AC_MSG_RESULT($gcc_cv_as_gcn_global_load_fixed)
5351 # Test the LLVM assembler syntax dialect; they have made a number of
5352 # changes between LLVM 12 & 13 without any backward compatibility.
5353 gcc_GAS_CHECK_FEATURE([assembler amdgcn_target v2/3 syntax],
5354 gcc_cv_as_gcn_asm_v3_syntax,
5355 [-triple=amdgcn--amdhsa -mcpu=gfx906 -mattr=+xnack],
5356 [.amdgcn_target "amdgcn-unknown-amdhsa--gfx906+xnack"],,
5357 [AC_DEFINE(HAVE_GCN_ASM_V3_SYNTAX, 1,
5358 [Define if your assembler expects amdgcn_target gfx908+xnack syntax.])])
5359 gcc_GAS_CHECK_FEATURE([assembler amdgcn_target v4 syntax],
5360 gcc_cv_as_gcn_asm_v4_syntax,
5361 [-triple=amdgcn--amdhsa -mcpu=gfx908 -mattr=+xnack],
5362 [.amdgcn_target "amdgcn-unknown-amdhsa--gfx908:xnack+"],,
5363 [AC_DEFINE(HAVE_GCN_ASM_V4_SYNTAX, 1,
5364 [Define if your assembler expects amdgcn_target gfx908:xnack+ syntax.])])
5366 # Some attribute names changed in the move to v4 ...
5367 if test $gcc_cv_as_gcn_asm_v3_syntax = yes; then
5369 sramattr="+sram-ecc"
5371 elif test $gcc_cv_as_gcn_asm_v4_syntax = yes; then
5373 sramattr=":sramecc+"
5376 AC_MSG_ERROR([Unrecognised assembler version])
5379 # Test whether the LLVM assembler accepts -mattr=+xnack without any
5380 # diagnostic. LLVM 9 & 10 accept the option whether it makes sense or not,
5381 # LLVM 12+ throws a warning for GPUs without support.
5382 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+xnack for fiji],
5383 gcc_cv_as_gcn_xnack_ecc_fiji,
5384 [-triple=amdgcn--amdhsa -mcpu=fiji -mattr=+xnack 2>conftest.err], [],
5385 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5386 || gcc_cv_as_gcn_xnack_ecc_fiji=yes],
5387 [AC_DEFINE(HAVE_GCN_XNACK_FIJI, 1,
5388 [Define if your assembler allows -mattr=+xnack for fiji.])])
5390 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+xnack for gfx900],
5391 gcc_cv_as_gcn_xnack_ecc_gfx900,
5392 [-triple=amdgcn--amdhsa -mcpu=gfx900 -mattr=+xnack 2>conftest.err], [],
5393 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5394 || gcc_cv_as_gcn_xnack_ecc_gfx900=yes],
5395 [AC_DEFINE(HAVE_GCN_XNACK_GFX900, 1,
5396 [Define if your assembler allows -mattr=+xnack for gfx900.])])
5398 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+xnack for gfx906],
5399 gcc_cv_as_gcn_xnack_ecc_gfx906,
5400 [-triple=amdgcn--amdhsa -mcpu=gfx906 -mattr=+xnack 2>conftest.err], [],
5401 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5402 || gcc_cv_as_gcn_xnack_ecc_gfx906=yes],
5403 [AC_DEFINE(HAVE_GCN_XNACK_GFX906, 1,
5404 [Define if your assembler allows -mattr=+xnack for gfx906.])])
5406 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+xnack for gfx908],
5407 gcc_cv_as_gcn_xnack_ecc_gfx908,
5408 [-triple=amdgcn--amdhsa -mcpu=gfx908 -mattr=+xnack 2>conftest.err], [],
5409 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5410 || gcc_cv_as_gcn_xnack_ecc_gfx908=yes],
5411 [AC_DEFINE(HAVE_GCN_XNACK_GFX908, 1,
5412 [Define if your assembler allows -mattr=+xnack for gfx908.])])
5415 # Test whether the LLVM assembler accepts -mattr=+sramecc without any
5416 # diagnostic. LLVM 9 & 10 accept the option whether it makes sense or not,
5417 # (some?) LLVM 12 rejects it for all GPUs, and LLVM13 throws a warning
5418 # for GPUs without support.
5419 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=$sramopt for fiji],
5420 gcc_cv_as_gcn_sram_ecc_fiji,
5421 [-triple=amdgcn--amdhsa -mcpu=fiji -mattr=$sramopt 2>conftest.err], [],
5422 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5423 || gcc_cv_as_gcn_sram_ecc_fiji=yes],
5424 [AC_DEFINE(HAVE_GCN_SRAM_ECC_FIJI, 1,
5425 [Define if your assembler allows -mattr=+sramecc for fiji.])])
5427 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=$sramopt for gfx900],
5428 gcc_cv_as_gcn_sram_ecc_gfx900,
5429 [-triple=amdgcn--amdhsa -mcpu=gfx900 -mattr=$sramopt 2>conftest.err], [],
5430 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5431 || gcc_cv_as_gcn_sram_ecc_gfx900=yes],
5432 [AC_DEFINE(HAVE_GCN_SRAM_ECC_GFX900, 1,
5433 [Define if your assembler allows -mattr=+sramecc for gfx900.])])
5435 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=$sramopt for gfx906],
5436 gcc_cv_as_gcn_sram_ecc_gfx906,
5437 [-triple=amdgcn--amdhsa -mcpu=gfx906 -mattr=$sramopt 2>conftest.err], [],
5438 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5439 || gcc_cv_as_gcn_sram_ecc_gfx906=yes],
5440 [AC_DEFINE(HAVE_GCN_SRAM_ECC_GFX906, 1,
5441 [Define if your assembler allows -mattr=+sramecc for gfx906.])])
5443 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=$sramopt for gfx908],
5444 gcc_cv_as_gcn_sram_ecc_gfx908,
5445 [-triple=amdgcn--amdhsa -mcpu=gfx908 -mattr=$sramopt 2>conftest.err], [],
5446 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5447 || gcc_cv_as_gcn_sram_ecc_gfx908=yes],
5448 [AC_DEFINE(HAVE_GCN_SRAM_ECC_GFX908, 1,
5449 [Define if your assembler allows -mattr=+sramecc for gfx908.])])
5453 gcc_GAS_CHECK_FEATURE([assembler for arm accepts context-specific architecture extensions],
5454 gcc_cv_as_arm_option_extensions,
5455 [-march=armv8.1-m.main+mve],
5460 [AC_DEFINE(HAVE_GAS_ARM_EXTENDED_ARCH, 1,
5461 [Define if your Arm assembler permits context-specific feature extensions.])])
5464 # ??? Not all targets support dwarf2 debug_line, even within a version
5465 # of gas. Moreover, we need to emit a valid instruction to trigger any
5466 # info to the output file. So, as supported targets are added to gas 2.11,
5467 # add some instruction here to (also) show we expect this might work.
5468 # ??? Once 2.11 is released, probably need to add first known working
5469 # version to the per-target configury.
5471 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \
5472 | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \
5473 | tilegx | tilepro | visium | xstormy16 | xtensa)
5483 if test x"$insn" != x; then
5485 .file 1 \"conftest.s\"
5488 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
5489 gcc_cv_as_dwarf2_debug_line,,
5491 [if test x$gcc_cv_objdump != x \
5492 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
5493 | grep debug_line > /dev/null 2>&1; then
5494 gcc_cv_as_dwarf2_debug_line=yes
5495 elif test x$gcc_cv_otool != x \
5496 && $gcc_cv_otool -l conftest.o 2> /dev/null \
5497 | grep debug_line > /dev/null 2>&1; then
5498 gcc_cv_as_dwarf2_debug_line=yes
5501 # The .debug_line file table must be in the exact order that
5502 # we specified the files, since these indices are also used
5503 # by DW_AT_decl_file. Approximate this test by testing if
5504 # the assembler bitches if the same index is assigned twice.
5505 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
5506 gcc_cv_as_dwarf2_file_buggy,,
5510 if test $gcc_cv_as_dwarf2_debug_line = yes \
5511 && test $gcc_cv_as_dwarf2_file_buggy = no; then
5512 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
5513 [Define if your assembler supports dwarf2 .file/.loc directives,
5514 and preserves file table indices exactly as given.])
5516 if test $gcc_cv_as_leb128 = yes; then
5518 .file 1 \"conftest.s\"
5519 .loc 1 3 0 view .LVU1
5525 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
5526 gcc_cv_as_dwarf2_debug_view,,
5528 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
5529 [Define if your assembler supports views in dwarf2 .loc directives.])])
5533 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
5534 gcc_cv_as_gdwarf2_flag,
5535 [--gdwarf2], [$insn],,
5536 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5537 [Define if your assembler supports the --gdwarf2 option.])])
5539 gcc_GAS_CHECK_FEATURE([--gdwarf-5 option],
5540 gcc_cv_as_gdwarf_5_flag,
5541 [--gdwarf-5], [$insn],
5542 [if test x$gcc_cv_objdump != x \
5543 && $gcc_cv_objdump -Wi conftest.o 2>&1 \
5544 | grep DW_TAG_compile_unit > /dev/null 2>&1; then
5545 gcc_cv_as_gdwarf_5_flag=yes;
5546 fi],[AC_DEFINE(HAVE_AS_GDWARF_5_DEBUG_FLAG, 1,
5547 [Define if your assembler supports the --gdwarf-5 option.])])
5550 win32 | pe | cygwin* | mingw32*)
5551 section_flags=\"dr\"
5552 function_type=".def foo; .scl 2; .type 32; .endef"
5555 section_flags=\"\",%progbits
5556 function_type=".type foo, %function"
5557 function_size=".size foo, .-foo";;
5559 dwarf4_debug_info_size=0x46
5560 dwarf4_high_pc_form=7
5561 dwarf4_debug_aranges_size=0x2c
5563 for dwarf4_addr_size in 8 4; do
5579 .section .debug_info,$section_flags
5581 .4byte $dwarf4_debug_info_size
5583 .4byte .Ldebug_abbrev0
5584 .byte 0x$dwarf4_addr_size
5586 .ascii \"GNU C17\\0\"
5590 .${dwarf4_addr_size}byte .Ltext0
5591 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5592 .4byte .Ldebug_line0
5598 .${dwarf4_addr_size}byte .LFB0
5599 .${dwarf4_addr_size}byte .LFE0-.LFB0
5603 .section .debug_abbrev,$section_flags
5619 .byte 0x$dwarf4_high_pc_form
5640 .byte 0x$dwarf4_high_pc_form
5646 .section .debug_aranges,$section_flags
5647 .4byte $dwarf4_debug_aranges_size
5649 .4byte .Ldebug_info0
5654 .${dwarf4_addr_size}byte .Ltext0
5655 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5656 .${dwarf4_addr_size}byte 0
5657 .${dwarf4_addr_size}byte 0
5658 .section .debug_line,$section_flags
5660 .4byte .LELT0-.LSLT0
5663 .4byte .LELTP0-.LASLTP0
5691 .byte 0x$dwarf4_line_sz
5693 .${dwarf4_addr_size}byte .LM1
5698 .byte 0x$dwarf4_line_sz
5700 .${dwarf4_addr_size}byte .LM2
5705 .byte 0x$dwarf4_line_sz
5707 .${dwarf4_addr_size}byte .Letext0
5712 .section .debug_str,$section_flags
5716 if test $dwarf4_addr_size = 4; then
5717 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 32-bit .debug_line],
5718 gcc_cv_as_debug_line_32_flag,,
5720 [dwarf4_success=yes])
5722 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 64-bit .debug_line],
5723 gcc_cv_as_debug_line_64_flag,,
5725 [dwarf4_success=yes])
5727 if test $dwarf4_success = yes; then
5729 gcc_GAS_CHECK_FEATURE([--gdwarf-4 not refusing compiler generated .debug_line],
5730 gcc_cv_as_dwarf_4_debug_line_flag,
5731 [--gdwarf-4], [$conftest_s],,
5732 [dwarf4_success=yes])
5735 dwarf4_debug_info_size=0x36
5736 dwarf4_high_pc_form=6
5737 dwarf4_debug_aranges_size=0x1c
5741 if test $dwarf4_success = yes; then
5759 gcc_GAS_CHECK_FEATURE([--gdwarf-4 with the APP marker],
5760 gcc_cv_as_dwarf_4_app_flag,
5761 [--gdwarf-4], [$conftest_s],, [dwarf4_success=yes])
5764 if test $dwarf4_success = yes; then
5774 gcc_GAS_CHECK_FEATURE([working --gdwarf-4/--gdwarf-5 for all sources],
5775 gcc_cv_as_working_gdwarf_n_flag,
5779 if test x$gcc_cv_objdump != x \
5780 && $gcc_cv_objdump -W conftest.o 2>&1 \
5781 | grep conftest.s > /dev/null 2>&1; then
5782 gcc_cv_as_working_gdwarf_n_flag=no
5784 gcc_cv_as_working_gdwarf_n_flag=yes
5786 changequote([,])dnl])
5787 if test $gcc_cv_as_working_gdwarf_n_flag = yes; then
5788 AC_DEFINE(HAVE_AS_WORKING_DWARF_N_FLAG, 1,
5789 [Define if your assembler supports --gdwarf-4/--gdwarf-5 even with
5790 compiler generated .debug_line.])
5794 gcc_GAS_CHECK_FEATURE([--gstabs option],
5795 gcc_cv_as_gstabs_flag,
5796 [--gstabs], [$insn],,
5797 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
5798 [Define if your assembler supports the --gstabs option.])])
5800 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5801 gcc_cv_as_debug_prefix_map_flag,
5802 [--debug-prefix-map /a=/b], [$insn],,
5803 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5804 [Define if your assembler supports the --debug-prefix-map option.])])
5807 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5808 gcc_cv_as_compress_debug,,,
5809 [# gas compiled without zlib cannot compress debug sections and warns
5810 # about it, but still exits successfully. So check for this, too.
5811 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5813 gcc_cv_as_compress_debug=0
5814 # Since binutils 2.26, gas supports --compress-debug-sections=type,
5815 # defaulting to the ELF gABI format.
5816 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
5818 gcc_cv_as_compress_debug=2
5819 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5820 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5821 # Before binutils 2.26, gas only supported --compress-debug-options and
5822 # emitted the traditional GNU format.
5823 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
5825 gcc_cv_as_compress_debug=1
5826 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5827 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5829 gcc_cv_as_compress_debug=0
5831 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5832 [Define to the level of your assembler's compressed debug section support.])
5833 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5834 [Define to the assembler option to enable compressed debug sections.])
5835 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5836 [Define to the assembler option to disable compressed debug sections.])
5838 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,,
5840 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5841 [Define if your assembler supports .lcomm with an alignment field.])])
5843 if test x$with_sysroot = x && test x$host = x$target \
5844 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5845 && test "$prefix" != "NONE"; then
5846 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5847 [Define to PREFIX/include if cpp should also search that directory.])
5850 # Determine the version of glibc, if any, used on the target.
5851 AC_MSG_CHECKING([for target glibc version])
5852 AC_ARG_WITH([glibc-version],
5853 [AS_HELP_STRING([--with-glibc-version=M.N],
5854 [assume GCC used with glibc version M.N or later])], [
5855 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5856 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5857 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5859 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5861 glibc_version_major=0
5862 glibc_version_minor=0
5863 [if test -f $target_header_dir/features.h \
5864 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5865 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5866 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5867 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5869 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5870 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5871 [GNU C Library major version number used on the target, or 0.])
5872 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5873 [GNU C Library minor version number used on the target, or 0.])
5875 AC_ARG_ENABLE(gnu-unique-object,
5876 [AS_HELP_STRING([--enable-gnu-unique-object],
5877 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5878 [case $enable_gnu_unique_object in
5880 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5881 Valid choices are 'yes' and 'no'.]) ;;
5883 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,,
5884 [.type foo, '$target_type_format_char'gnu_unique_object],,
5885 # We need to unquote above to to use the definition from config.gcc.
5886 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5887 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5889 if test x$enable_gnu_unique_object = xyes; then
5890 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5891 [Define if your assembler supports @gnu_unique_object.])
5894 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5895 [gcc_cv_as_line_zero],
5896 [gcc_cv_as_line_zero=no
5897 if test "x$gcc_cv_as" != x; then
5898 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5899 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5900 test "x`cat conftest.out`" = x
5902 gcc_cv_as_line_zero=yes
5904 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5905 cat conftest.s >&AS_MESSAGE_LOG_FD
5906 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5907 cat conftest.out >&AS_MESSAGE_LOG_FD
5909 rm -f conftest.o conftest.s conftest.out
5911 if test "x$gcc_cv_as_line_zero" = xyes; then
5912 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5913 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5916 AC_MSG_CHECKING(support for thin archives)
5917 thin_archive_support=no
5918 echo 'int main (void) { return 0; }' > conftest.c
5919 if ($AR --version | sed 1q | grep "GNU ar" \
5920 && $CC $CFLAGS -c conftest.c \
5921 && $AR rcT conftest.a conftest.o \
5922 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5923 thin_archive_support=yes
5925 rm -f conftest.c conftest.o conftest.a conftest
5926 AC_MSG_RESULT($thin_archive_support)
5927 AC_SUBST(thin_archive_support)
5929 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5930 gcc_cv_ld_eh_frame_hdr=no
5931 if test $in_tree_ld = yes ; then
5932 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5933 && test $in_tree_ld_is_elf = yes; then
5934 gcc_cv_ld_eh_frame_hdr=yes
5936 elif test x$gcc_cv_ld != x; then
5937 if echo "$ld_ver" | grep GNU > /dev/null; then
5938 # Check if linker supports --eh-frame-hdr option
5939 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5940 gcc_cv_ld_eh_frame_hdr=yes
5945 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5946 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5947 gcc_cv_ld_eh_frame_hdr=yes
5953 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5954 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5955 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5956 [Define if your linker supports .eh_frame_hdr.])
5958 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5960 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5961 gcc_cv_ld_eh_frame_ciev3=no
5962 if test $in_tree_ld = yes ; then
5963 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5964 && test $in_tree_ld_is_elf = yes; then
5965 gcc_cv_ld_eh_frame_ciev3=yes
5967 elif test x$gcc_cv_ld != x; then
5968 if echo "$ld_ver" | grep GNU > /dev/null; then
5969 gcc_cv_ld_eh_frame_ciev3=yes
5970 if test 0"$ld_date" -lt 20040513; then
5971 if test -n "$ld_date"; then
5972 # If there was date string, but was earlier than 2004-05-13, fail
5973 gcc_cv_ld_eh_frame_ciev3=no
5974 elif test "$ld_vers_major" -lt 2; then
5975 gcc_cv_ld_eh_frame_ciev3=no
5976 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5977 gcc_cv_ld_eh_frame_ciev3=no
5983 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5984 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5985 gcc_cv_ld_eh_frame_ciev3=yes
5991 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5992 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5993 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5994 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5996 AC_MSG_CHECKING(linker position independent executable support)
5998 if test $in_tree_ld = yes ; then
6000 # Full PIE support on Solaris was only introduced in gld 2.26.
6001 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
6002 *) gcc_gld_pie_min_version=15 ;;
6004 if test "$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 \
6005 && test $in_tree_ld_is_elf = yes; then
6008 elif test x$gcc_cv_ld != x; then
6009 # Check if linker supports -pie option
6010 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
6014 if echo "$ld_ver" | grep GNU > /dev/null \
6015 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
6022 *-*-solaris2.1[[1-9]]*)
6023 # Solaris 11.3 added PIE support.
6024 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
6031 if test x"$gcc_cv_ld_pie" = xyes; then
6032 AC_DEFINE(HAVE_LD_PIE, 1,
6033 [Define if your linker supports PIE option.])
6035 AC_MSG_RESULT($gcc_cv_ld_pie)
6037 AC_MSG_CHECKING(linker PIE support with copy reloc)
6038 gcc_cv_ld_pie_copyreloc=no
6039 if test $gcc_cv_ld_pie = yes ; then
6040 if test $in_tree_ld = yes ; then
6041 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6042 gcc_cv_ld_pie_copyreloc=yes
6044 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6045 # Check if linker supports -pie option with copy reloc
6047 i?86-*-linux* | x86_64-*-linux*)
6048 cat > conftest1.s <<EOF
6051 .type a_glob, @object
6056 cat > conftest2.s <<EOF
6059 .type main, @function
6061 movl %eax, a_glob(%rip)
6064 .section .data.rel,"aw",@progbits
6069 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6070 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
6071 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6072 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
6073 gcc_cv_ld_pie_copyreloc=yes
6075 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
6080 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
6081 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
6082 [Define 0/1 if your linker supports -pie option with copy reloc.])
6083 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
6085 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
6086 gcc_cv_ld_eh_gc_sections=no
6087 if test $in_tree_ld = yes ; then
6088 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
6089 && test $in_tree_ld_is_elf = yes; then
6090 gcc_cv_ld_eh_gc_sections=yes
6092 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
6093 cat > conftest.s <<EOF
6096 .type _start, @function
6099 .size _start, .-_start
6100 .section .text.foo,"ax",@progbits
6101 .type foo, @function
6105 .section .gcc_except_table.foo,"a",@progbits
6108 .section .eh_frame,"a",@progbits
6111 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6112 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6113 | grep "gc-sections option ignored" > /dev/null; then
6114 gcc_cv_ld_eh_gc_sections=no
6115 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6116 | grep gcc_except_table > /dev/null; then
6117 gcc_cv_ld_eh_gc_sections=yes
6118 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
6119 if test x$gcc_cv_as_comdat_group != xyes; then
6120 gcc_cv_ld_eh_gc_sections=no
6121 cat > conftest.s <<EOF
6124 .type _start, @function
6127 .size _start, .-_start
6128 .section .gnu.linkonce.t.foo,"ax",@progbits
6129 .type foo, @function
6133 .section .gcc_except_table.foo,"a",@progbits
6136 .section .eh_frame,"a",@progbits
6139 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6140 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6141 | grep "gc-sections option ignored" > /dev/null; then
6142 gcc_cv_ld_eh_gc_sections=no
6143 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6144 | grep gcc_except_table > /dev/null; then
6145 gcc_cv_ld_eh_gc_sections=yes
6151 rm -f conftest.s conftest.o conftest
6155 # ??? This apparently exposes a binutils bug with PC-relative relocations.
6156 gcc_cv_ld_eh_gc_sections=no
6159 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
6160 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
6161 [Define if your linker supports garbage collection of
6162 sections in presence of EH frames.])
6164 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
6166 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
6167 gcc_cv_ld_eh_gc_sections_bug=no
6168 if test $in_tree_ld = yes ; then
6169 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
6170 && test $in_tree_ld_is_elf = yes; then
6171 gcc_cv_ld_eh_gc_sections_bug=yes
6173 elif test x$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
6174 gcc_cv_ld_eh_gc_sections_bug=yes
6175 cat > conftest.s <<EOF
6178 .type _start, @function
6181 .size _start, .-_start
6182 .section .text.startup.foo,"ax",@progbits
6183 .type foo, @function
6187 .section .gcc_except_table.foo,"a",@progbits
6190 .section .eh_frame,"a",@progbits
6193 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6194 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6195 | grep "gc-sections option ignored" > /dev/null; then
6197 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6198 | grep gcc_except_table > /dev/null; then
6199 gcc_cv_ld_eh_gc_sections_bug=no
6202 rm -f conftest.s conftest.o conftest
6204 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
6205 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
6206 [Define if your linker has buggy garbage collection of
6207 sections support when .text.startup.foo like sections are used.])
6209 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
6211 AC_MSG_CHECKING(linker for compressed debug sections)
6212 # gold/gld support compressed debug sections since binutils 2.19/2.21
6213 # In binutils 2.26, gld gained support for the ELF gABI format.
6214 if test $in_tree_ld = yes ; then
6215 gcc_cv_ld_compress_debug=0
6216 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
6217 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
6218 gcc_cv_ld_compress_debug=2
6219 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6220 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
6221 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
6222 gcc_cv_ld_compress_debug=3
6223 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6224 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
6225 && test $in_tree_ld_is_elf = yes; then
6226 gcc_cv_ld_compress_debug=1
6228 elif echo "$ld_ver" | grep GNU > /dev/null; then
6229 if test "$ld_vers_major" -lt 2 \
6230 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
6231 gcc_cv_ld_compress_debug=0
6232 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
6233 gcc_cv_ld_compress_debug=1
6235 gcc_cv_ld_compress_debug=3
6236 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6238 if test $ld_is_gold = yes; then
6239 gcc_cv_ld_compress_debug=2
6240 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6246 # Introduced in Solaris 11.2.
6247 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
6248 gcc_cv_ld_compress_debug=3
6249 gcc_cv_ld_compress_debug_option="-z compress-sections"
6251 gcc_cv_ld_compress_debug=0
6255 # Assume linkers other than GNU ld don't support compessed debug
6257 gcc_cv_ld_compress_debug=0
6262 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
6263 [Define to the level of your linker's compressed debug section support.])
6264 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
6265 [Define to the linker option to enable compressed debug sections.])
6266 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
6268 if test x"$ld64_flag" = x"yes"; then
6270 # Set defaults for possibly untestable items.
6271 gcc_cv_ld64_export_dynamic=0
6272 gcc_cv_ld64_platform_version=0
6274 if test "$build" = "$host"; then
6280 # On Darwin, because of FAT library support, it is often possible to execute
6281 # exes from compatible archs even when the host differs from the build system.
6282 case "$build","$host" in
6283 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
6288 # If the configurer specified a minimum ld64 version to be supported, then use
6289 # that to determine feature support.
6290 if test x"${gcc_cv_ld64_version}" != x; then
6291 AC_MSG_CHECKING(ld64 specified version)
6292 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
6293 AC_MSG_RESULT($gcc_cv_ld64_major)
6294 if test "$gcc_cv_ld64_major" -ge 236; then
6295 gcc_cv_ld64_export_dynamic=1
6297 if test "$gcc_cv_ld64_major" -ge 512; then
6298 gcc_cv_ld64_platform_version=1
6300 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
6301 # If the version was not specified, try to find it.
6302 AC_MSG_CHECKING(linker version)
6303 if test x"${gcc_cv_ld64_version}" = x; then
6304 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
6306 AC_MSG_RESULT($gcc_cv_ld64_version)
6308 AC_MSG_CHECKING(linker for -export_dynamic support)
6309 gcc_cv_ld64_export_dynamic=1
6310 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6311 gcc_cv_ld64_export_dynamic=0
6313 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
6315 AC_MSG_CHECKING(linker for -platform_version support)
6316 gcc_cv_ld64_platform_version=1
6317 if $gcc_cv_ld -platform_version macos 10.5 0.0 < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6318 gcc_cv_ld64_platform_version=0
6320 AC_MSG_RESULT($gcc_cv_ld64_platform_version)
6323 if test x"${gcc_cv_ld64_version}" != x; then
6324 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
6325 [Define to ld64 version.])
6328 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
6329 [Define to 1 if ld64 supports '-export_dynamic'.])
6331 AC_DEFINE_UNQUOTED(LD64_HAS_PLATFORM_VERSION, $gcc_cv_ld64_platform_version,
6332 [Define to 1 if ld64 supports '-platform_version'.])
6335 if test x"$dsymutil_flag" = x"yes"; then
6337 # If the user specified a dsymutil path, then we will already have the
6338 # version string, otherwise, pick it up.
6339 if test x"$gcc_cv_dsymutil" = x; then
6340 AC_MSG_WARN([dsymutil is a required tool for this system, but not found])
6341 dsymutil_vers="tool unspecified"
6342 elif test x"$dsymutil_vers" = x; then
6343 dsymutil_vers=`$gcc_cv_dsymutil -v /dev/null 2>&1`
6346 dsymutil_temp=`echo $dsymutil_vers | sed 1q`
6347 AC_MSG_CHECKING(dsymutil version "$dsymutil_temp")
6348 if echo $dsymutil_temp | grep dwarfutils- > /dev/null; then
6349 dsymutil_kind=DWARFUTILS
6350 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*dwarfutils-\([[0-9\.]]*\).*/\1/'`
6351 elif echo $dsymutil_temp | grep clang- > /dev/null; then
6353 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*clang-\([[0-9\.]]*\).*/\1/'`
6354 elif echo $dsymutil_temp | grep 'LLVM version ' > /dev/null; then
6356 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*LLVM\ version\ \([[0-9\.]]*\).*/\1/'`
6358 dsymutil_kind=UNKNOWN
6361 dsymutil_major=`expr "$dsymutil_vers" : '\([[0-9]]*\)'`
6362 dsymutil_minor=`expr "$dsymutil_vers" : '[[0-9]]*\.\([[0-9]]*\)'`
6363 dsymutil_tiny=`expr "$dsymutil_vers" : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
6364 if test x"${dsymutil_minor}" = x; then
6367 if test x"${dsymutil_tiny}" = x; then
6370 AC_DEFINE_UNQUOTED(DSYMUTIL_VERSION, [$dsymutil_kind,${dsymutil_major},${dsymutil_minor},${dsymutil_tiny}],
6371 [Define to the dsymutil version.])
6372 AC_MSG_RESULT($dsymutil_vers : $dsymutil_kind ${dsymutil_major} ${dsymutil_minor} ${dsymutil_tiny} )
6376 win32 | pe | cygwin* | mingw32*)
6377 AC_MSG_CHECKING(broken PE linker dwarf5 support)
6378 gcc_cv_ld_broken_pe_dwarf5=yes
6379 if test $in_tree_ld = yes ; then
6380 if grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6381 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc \
6382 && grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6383 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc; then
6384 gcc_cv_ld_broken_pe_dwarf5=no
6387 if $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6388 && $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:'; then
6389 gcc_cv_ld_broken_pe_dwarf5=no
6392 if test x$gcc_cv_ld_broken_pe_dwarf5 = xyes; then
6393 AC_DEFINE(HAVE_LD_BROKEN_PE_DWARF5, 1,
6394 [Define if the PE linker has broken DWARF 5 support.])
6396 AC_MSG_RESULT($gcc_cv_ld_broken_pe_dwarf5)
6398 AC_MSG_CHECKING(PE linker --disable-dynamicbase support)
6399 gcc_cv_ld_disable_dynamicbase=no
6400 if test $in_tree_ld = yes; then
6401 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 36 -o "$gcc_cv_gld_major_version" -gt 2; then \
6402 gcc_cv_ld_disable_dynamicbase=yes
6405 if $gcc_cv_ld --help 2>&1 | grep -q 'disable\-]dynamicbase' > /dev/null; then
6406 gcc_cv_ld_disable_dynamicbase=yes
6409 if test x"$gcc_cv_ld_disable_dynamicbase" = xyes; then
6410 AC_DEFINE(HAVE_LD_PE_DISABLE_DYNAMICBASE, 1,
6411 [Define if the PE linker supports --disable-dynamicbase option.])
6413 AC_MSG_RESULT($gcc_cv_ld_disable_dynamicbase)
6421 AC_CACHE_CHECK(linker --as-needed support,
6422 gcc_cv_ld_as_needed,
6423 [gcc_cv_ld_as_needed=no
6424 gcc_cv_ld_as_needed_option='--as-needed'
6425 gcc_cv_ld_no_as_needed_option='--no-as-needed'
6426 if test $in_tree_ld = yes ; then
6427 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
6428 && test $in_tree_ld_is_elf = yes; then
6429 gcc_cv_ld_as_needed=yes
6430 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
6431 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6432 gcc_cv_ld_no_as_needed_option='--pop-state'
6435 elif test x$gcc_cv_ld != x; then
6436 # Check if linker supports --as-needed and --no-as-needed options
6437 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
6438 gcc_cv_ld_as_needed=yes
6439 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
6440 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
6441 && echo "$ld_ver" | grep GNU > /dev/null \
6442 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
6443 # Use these options only when both ld.bfd and ld.gold support
6444 # --push-state/--pop-state, which unfortunately wasn't added
6446 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6447 gcc_cv_ld_no_as_needed_option='--pop-state'
6450 case "$target:$gnu_ld" in
6452 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
6454 gcc_cv_ld_as_needed=yes
6455 gcc_cv_ld_as_needed_option="-z ignore"
6456 gcc_cv_ld_no_as_needed_option="-z record"
6460 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
6461 # dl_iterate_phdr, i.e. since Solaris 11.
6463 *-*-solaris2.1[[1-9]]*)
6465 i?86-*-* | x86_64-*-*)
6466 if echo "$ld_ver" | grep GNU > /dev/null; then
6467 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
6468 gcc_cv_ld_as_needed=no
6474 gcc_cv_ld_as_needed=no
6478 if test x"$gcc_cv_ld_as_needed" = xyes; then
6479 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
6480 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
6481 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
6482 [Define to the linker option to ignore unused dependencies.])
6483 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
6484 [Define to the linker option to keep unused dependencies.])
6487 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
6488 saved_LDFLAGS="$LDFLAGS"
6489 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
6490 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
6491 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6492 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
6494 LDFLAGS="$saved_LDFLAGS"
6495 if test "x$gcc_cv_ld_clearcap" = xyes; then
6496 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
6497 [Define if the linker supports clearing hardware capabilities via mapfile.])
6498 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
6500 AC_MSG_RESULT($gcc_cv_ld_clearcap)
6506 emul_name="-melf32lppc"
6509 emul_name="-melf32ppc"
6512 AC_CACHE_CHECK(linker .gnu.attributes long double support,
6514 [gcc_cv_ld_ppc_attr=no
6515 if test x"$ld_is_gold" = xyes; then
6516 gcc_cv_ld_ppc_attr=yes
6517 elif test $in_tree_ld = yes ; then
6518 if test "$gcc_cv_gld_major_version" -eq 2 \
6519 -a "$gcc_cv_gld_minor_version" -ge 28 \
6520 -o "$gcc_cv_gld_major_version" -gt 2; then
6521 gcc_cv_ld_ppc_attr=yes
6523 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6524 # check that merging the long double .gnu_attribute doesn't warn
6525 cat > conftest1.s <<EOF
6528 cat > conftest2.s <<EOF
6531 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6532 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6533 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
6534 && test ! -s conftest.err; then
6535 gcc_cv_ld_ppc_attr=yes
6537 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
6540 if test x$gcc_cv_ld_ppc_attr = xyes; then
6541 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
6542 [Define if your PowerPC linker has .gnu.attributes long double support.])
6547 case "$target:$tm_file" in
6548 powerpc64*-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
6551 emul_name="-melf64lppc"
6554 emul_name="-melf64ppc"
6557 emul_name="-melf64lppc_fbsd"
6560 emul_name="-melf64ppc_fbsd"
6563 AC_CACHE_CHECK(linker support for omitting dot symbols,
6564 gcc_cv_ld_no_dot_syms,
6565 [gcc_cv_ld_no_dot_syms=no
6566 if test x"$ld_is_gold" = xyes; then
6567 gcc_cv_ld_no_dot_syms=yes
6568 elif test $in_tree_ld = yes ; then
6569 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
6570 gcc_cv_ld_no_dot_syms=yes
6572 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6573 cat > conftest1.s <<EOF
6577 cat > conftest2.s <<EOF
6578 .section ".opd","aw"
6583 .quad .LEfoo,.TOC.@tocbase,0
6589 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6590 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6591 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
6592 gcc_cv_ld_no_dot_syms=yes
6594 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
6597 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
6598 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
6599 [Define if your PowerPC64 linker only needs function descriptor syms.])
6602 AC_CACHE_CHECK(linker large toc support,
6603 gcc_cv_ld_large_toc,
6604 [gcc_cv_ld_large_toc=no
6605 if test x"$ld_is_gold" = xyes; then
6606 gcc_cv_ld_large_toc=yes
6607 elif test $in_tree_ld = yes ; then
6608 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
6609 gcc_cv_ld_large_toc=yes
6611 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6612 cat > conftest.s <<EOF
6613 .section ".tbss","awT",@nobits
6619 addis 9,13,ie0@got@tprel@ha
6620 ld 9,ie0@got@tprel@l(9)
6622 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6623 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
6624 gcc_cv_ld_large_toc=yes
6626 rm -f conftest conftest.o conftest.s
6629 if test x"$gcc_cv_ld_large_toc" = xyes; then
6630 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6631 [Define if your PowerPC64 linker supports a large TOC.])
6634 AC_CACHE_CHECK(linker toc pointer alignment,
6635 gcc_cv_ld_toc_align,
6636 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
6637 cat > conftest.s <<EOF
6642 .section .data.rel.ro,"aw",@progbits
6647 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6648 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
6649 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
6651 rm -f conftest conftest.o conftest.s
6654 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
6655 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
6656 [Define to .TOC. alignment forced by your linker.])
6663 AC_CACHE_CHECK(linker large toc support,
6664 gcc_cv_ld_large_toc,
6665 [gcc_cv_ld_large_toc=no
6666 if test x$gcc_cv_as != x ; then
6667 cat > conftest.s <<EOF
6677 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
6678 gcc_cv_ld_large_toc=yes
6680 rm -f conftest conftest.o conftest.s
6683 if test x"$gcc_cv_ld_large_toc" = xyes; then
6684 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6685 [Define if your PowerPC64 linker supports a large TOC.])
6690 AC_CACHE_CHECK(linker --build-id support,
6692 [gcc_cv_ld_buildid=no
6693 if test $in_tree_ld = yes ; then
6694 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6695 "$gcc_cv_gld_minor_version" -ge 18 -o \
6696 "$gcc_cv_gld_major_version" -gt 2 \
6697 && test $in_tree_ld_is_elf = yes; then
6698 gcc_cv_ld_buildid=yes
6700 elif test x$gcc_cv_ld != x; then
6701 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
6702 gcc_cv_ld_buildid=yes
6705 if test x"$gcc_cv_ld_buildid" = xyes; then
6706 AC_DEFINE(HAVE_LD_BUILDID, 1,
6707 [Define if your linker supports --build-id.])
6710 AC_ARG_ENABLE(linker-build-id,
6711 [AS_HELP_STRING([--enable-linker-build-id],
6712 [compiler will always pass --build-id to linker])],
6714 enable_linker_build_id=no)
6716 if test x"$enable_linker_build_id" = xyes; then
6717 if test x"$gcc_cv_ld_buildid" = xyes; then
6718 AC_DEFINE(ENABLE_LD_BUILDID, 1,
6719 [Define if gcc should always pass --build-id to linker.])
6721 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
6725 # In binutils 2.21, GNU ld gained support for new emulations fully
6726 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
6727 AC_CACHE_CHECK(linker *_sol2 emulation support,
6728 gcc_cv_ld_sol2_emulation,
6729 [gcc_cv_ld_sol2_emulation=no
6730 if test $in_tree_ld = yes ; then
6731 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6732 "$gcc_cv_gld_minor_version" -ge 21 -o \
6733 "$gcc_cv_gld_major_version" -gt 2 \
6734 && test $in_tree_ld_is_elf = yes; then
6735 gcc_cv_ld_sol2_emulation=yes
6737 elif test x$gcc_cv_ld != x; then
6738 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
6739 grep _sol2 > /dev/null; then
6740 gcc_cv_ld_sol2_emulation=yes
6743 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
6744 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
6745 [Define if your linker supports the *_sol2 emulations.])
6748 AC_CACHE_CHECK(linker --sysroot support,
6750 [gcc_cv_ld_sysroot=no
6751 if test $in_tree_ld = yes ; then
6752 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
6753 gcc_cv_ld_sysroot=yes
6755 elif test x$gcc_cv_ld != x; then
6756 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
6757 gcc_cv_ld_sysroot=yes
6760 if test x"$gcc_cv_ld_sysroot" = xyes; then
6761 AC_DEFINE(HAVE_LD_SYSROOT, 1,
6762 [Define if your linker supports --sysroot.])
6767 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
6768 AC_CACHE_CHECK([system-provided CRTs on Solaris],
6769 gcc_cv_solaris_crts,
6770 [gcc_cv_solaris_crts=no
6771 if test x$host != x$target; then
6772 if test "x$with_sysroot" = xyes; then
6773 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
6775 target_sysroot="${with_sysroot}"
6778 target_libdir="$target_sysroot/usr/lib"
6779 # At the time they were added, gcrt1.o became a symlink for backwards
6780 # compatibility on x86, while crt1.o was added on sparc, so check for that.
6782 i?86-*-solaris2* | x86_64-*-solaris2*)
6783 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
6786 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
6791 if test x$gcc_cv_solaris_crts = xyes; then
6792 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
6793 [Define if the system-provided CRTs are present on Solaris.])
6796 AC_ARG_ENABLE(libssp,
6797 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
6798 [case "${enableval}" in
6802 AC_MSG_ERROR([unknown libssp setting $enableval])
6806 # Test for stack protector support in target C library.
6807 AC_CACHE_CHECK(__stack_chk_fail in target C library,
6808 gcc_cv_libc_provides_ssp,
6809 [gcc_cv_libc_provides_ssp=no
6810 if test "x$enable_libssp" = "xno"; then
6811 gcc_cv_libc_provides_ssp=yes
6812 elif test "x$enable_libssp" = "xyes"; then
6813 gcc_cv_libc_provides_ssp=no
6817 # All versions of musl provide stack protector
6818 gcc_cv_libc_provides_ssp=yes;;
6819 *-*-linux* | *-*-kfreebsd*-gnu)
6820 # glibc 2.4 and later provides __stack_chk_fail and
6821 # either __stack_chk_guard, or TLS access to stack guard canary.
6822 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
6823 [if test -f $target_header_dir/features.h \
6824 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
6825 $target_header_dir/features.h > /dev/null; then
6826 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
6827 $target_header_dir/features.h > /dev/null && \
6828 test -f $target_header_dir/bits/uClibc_config.h && \
6829 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
6830 $target_header_dir/bits/uClibc_config.h > /dev/null; then
6831 gcc_cv_libc_provides_ssp=yes
6833 # all versions of Bionic support stack protector
6834 elif test -f $target_header_dir/sys/cdefs.h \
6835 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
6836 $target_header_dir/sys/cdefs.h > /dev/null; then
6837 gcc_cv_libc_provides_ssp=yes
6841 # Avoid complicated tests (see
6842 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
6843 # simply assert that glibc does provide this, which is true for all
6844 # realistically usable GNU/Hurd configurations.
6845 # All supported versions of musl provide it as well
6846 gcc_cv_libc_provides_ssp=yes;;
6847 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
6848 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
6849 [echo "no __stack_chk_fail on this target"])
6851 *) gcc_cv_libc_provides_ssp=no ;;
6855 if test x$gcc_cv_libc_provides_ssp = xyes; then
6856 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
6857 [Define if your target C library provides stack protector support])
6860 # Check whether --enable-default-ssp was given.
6861 AC_ARG_ENABLE(default-ssp,
6862 [AS_HELP_STRING([--enable-default-ssp],
6863 [enable Stack Smashing Protection as default])],[
6864 if test x$gcc_cv_libc_provides_ssp = xyes; then
6866 ia64*-*-*) enable_default_ssp=no ;;
6867 *) enable_default_ssp=$enableval ;;
6870 enable_default_ssp=no
6872 enable_default_ssp=no)
6873 if test x$enable_default_ssp = xyes ; then
6874 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
6875 [Define if your target supports default stack protector and it is enabled.])
6877 AC_SUBST([enable_default_ssp])
6879 # Test for <sys/sdt.h> on the target.
6880 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
6881 AC_MSG_CHECKING(sys/sdt.h in the target C library)
6883 if test -f $target_header_dir/sys/sdt.h; then
6885 AC_DEFINE(HAVE_SYS_SDT_H, 1,
6886 [Define if your target C library provides sys/sdt.h])
6888 AC_MSG_RESULT($have_sys_sdt_h)
6890 # Check if TFmode long double should be used by default or not.
6891 # Some glibc targets used DFmode long double, but with glibc 2.4
6892 # and later they can use TFmode.
6894 powerpc*-*-linux* | \
6898 AC_ARG_WITH(long-double-128,
6899 [AS_HELP_STRING([--with-long-double-128],
6900 [use 128-bit long double by default])],
6901 gcc_cv_target_ldbl128="$with_long_double_128", [
6903 s390*-*-linux-musl*)
6904 gcc_cv_target_ldbl128=yes
6906 powerpc*-*-linux-musl*)
6907 gcc_cv_target_ldbl128=no
6910 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6911 [gcc_cv_target_ldbl128=no
6912 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6913 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6914 && gcc_cv_target_ldbl128=yes
6922 if test x$gcc_cv_target_ldbl128 = xyes; then
6923 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6924 [Define if TFmode long double should be the default])
6927 # Check if TFmode long double target should use the IBM extended double or IEEE
6928 # 128-bit floating point formats if long doubles are 128-bits long. The long
6929 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6930 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6932 AC_ARG_WITH([long-double-format],
6933 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6934 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6935 case "$target:$with_long_double_format" in
6936 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6939 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6940 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6942 power7 | power8 | power9 | power1*)
6946 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6947 supported if the default cpu is power7 or newer])
6948 with_long_double_format=""
6952 powerpc64*-*-linux*:*)
6953 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6954 with_long_double_format=""
6957 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6958 on 64-bit PowerPC VSX Linux systems])
6959 with_long_double_format=""
6964 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6965 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6966 gcc_cv_libc_provides_hwcap_in_tcb=no
6969 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6972 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6973 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6974 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6977 # Check if the target LIBC handles PT_GNU_STACK.
6978 gcc_cv_libc_gnustack=unknown
6980 mips*-*-linux-musl*)
6981 gcc_cv_libc_gnustack=yes
6984 GCC_GLIBC_VERSION_GTE_IFELSE([2], [31], [gcc_cv_libc_gnustack=yes], )
6987 if test x$gcc_cv_libc_gnustack = xyes; then
6988 AC_DEFINE(TARGET_LIBC_GNUSTACK, 1,
6989 [Define if your target C Library properly handles PT_GNU_STACK])
6992 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6993 gcc_cv_target_dl_iterate_phdr=unknown
6996 # <link.h> needs both a dl_iterate_phdr declaration and support for
6997 # compilation with largefile support.
6998 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6999 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
7000 gcc_cv_target_dl_iterate_phdr=yes
7002 gcc_cv_target_dl_iterate_phdr=no
7005 *-*-dragonfly* | *-*-freebsd*)
7006 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
7007 gcc_cv_target_dl_iterate_phdr=yes
7009 gcc_cv_target_dl_iterate_phdr=no
7013 gcc_cv_target_dl_iterate_phdr=yes
7016 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
7017 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
7018 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
7019 [Define if your target C library provides the `dl_iterate_phdr' function.])
7021 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
7023 # We no longer support different GC mechanisms. Emit an error if
7024 # the user configures with --with-gc.
7026 [AS_HELP_STRING([--with-gc={page,zone}],
7027 [this option is not supported anymore. It used to choose
7028 the garbage collection mechanism to use with the compiler])],
7029 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
7032 # Libraries to use on the host. This will normally be set by the top
7033 # level Makefile. Here we simply capture the value for our Makefile.
7034 if test -z "${HOST_LIBS+set}"; then
7039 # Use the system's zlib library.
7042 dnl Very limited version of automake's enable-maintainer-mode
7044 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
7045 dnl maintainer-mode is disabled by default
7046 AC_ARG_ENABLE(maintainer-mode,
7047 [AS_HELP_STRING([--enable-maintainer-mode],
7048 [enable make rules and dependencies not useful
7049 (and sometimes confusing) to the casual installer])],
7050 maintainer_mode=$enableval,
7053 AC_MSG_RESULT($maintainer_mode)
7055 if test "$maintainer_mode" = "yes"; then
7062 dnl Variables for tags utilities; copied from automake 1.16.4+'s init.m4
7063 if test -z "$CTAGS"; then
7067 if test -z "$ETAGS"; then
7071 if test -z "$CSCOPE"; then
7076 dnl Whether to prevent multiple front-ends from linking at the same time
7078 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
7079 AC_ARG_ENABLE(link-mutex,
7080 [AS_HELP_STRING([--enable-link-mutex],
7081 [avoid linking multiple front-ends at once to avoid thrashing
7082 on the build machine])],
7083 do_link_mutex=$enableval,
7085 AC_MSG_RESULT($do_link_mutex)
7087 if test "$do_link_mutex" = "yes"; then
7092 AC_SUBST(DO_LINK_MUTEX)
7094 dnl Whether to prevent multiple GCC front-ends from linking at the same time
7096 AC_MSG_CHECKING([whether to serialize linking of multiple front-ends])
7097 AC_ARG_ENABLE(link-serialization,
7098 [AS_HELP_STRING([--enable-link-serialization],
7099 [avoid linking multiple GCC front-ends at once using make
7100 dependencies to avoid thrashing on the build machine])],
7101 do_link_serialization=$enableval,
7102 do_link_serialization=no)
7103 AC_MSG_RESULT($do_link_serialization)
7105 case "$do_link_serialization" in
7107 DO_LINK_SERIALIZATION=1;;
7108 [[1-9]] | [[1-9]][[0-9]] | [[1-9]][[0-9]][[0-9]])
7109 DO_LINK_SERIALIZATION=$do_link_serialization;;
7111 DO_LINK_SERIALIZATION=;;
7113 AC_MSG_ERROR(bad value ${do_link_serialization} given for --enable-link-serialization) ;;
7115 AC_SUBST(DO_LINK_SERIALIZATION)
7121 # Make empty files to contain the specs and options for each language.
7122 # Then add #include lines to for a compiler that has specs and/or options.
7128 # These (without "all_") are set in each config-lang.in.
7129 # `language' must be a single word so is spelled singularly.
7132 all_outputs='Makefile'
7133 # List of language configure and makefile fragments.
7134 all_lang_configurefrags=
7136 # Additional files for gengtype
7137 all_gtfiles="$target_gtfiles"
7139 # These are the languages that are set in --enable-languages,
7140 # and are available in the GCC tree.
7141 all_selected_languages=
7143 # Add the language fragments.
7144 # Languages are added via two mechanisms. Some information must be
7145 # recorded in makefile variables, these are defined in config-lang.in.
7146 # We accumulate them and plug them into the main Makefile.
7147 # The other mechanism is a set of hooks for each of the main targets
7148 # like `clean', `install', etc.
7150 language_hooks="Make-hooks"
7152 for lang in ${srcdir}/*/config-lang.in
7155 test "$lang" = "${srcdir}/*/config-lang.in" && continue
7157 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
7158 if test "x$lang_alias" = x
7160 echo "$lang doesn't set \$language." 1>&2
7163 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
7164 subdirs="$subdirs $subdir"
7166 # $gcc_subdir is where the gcc integration files are to be found
7167 # for a language, both for internal compiler purposes (compiler
7168 # sources implementing front-end to GCC tree converters), and for
7169 # build infrastructure purposes (Make-lang.in, etc.)
7171 # This will be <subdir> (relative to $srcdir) if a line like
7172 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
7173 # is found in <langdir>/config-lang.in, and will remain <langdir>
7176 # Except for the language alias (fetched above), the regular
7177 # "config-lang.in" contents are always retrieved from $gcc_subdir,
7178 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
7179 # only this and the language alias.
7181 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
7182 if [ "$gcc_subdir" = "" ]; then
7183 gcc_subdir="$subdir"
7186 case ",$enable_languages," in
7188 all_selected_languages="$all_selected_languages $lang_alias"
7189 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
7190 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
7202 . ${srcdir}/$gcc_subdir/config-lang.in
7203 if test "x$language" = x
7205 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
7210 case ",$enable_languages," in
7213 for i in $subdir_requires; do
7214 test -f "${srcdir}/$i/config-lang.in" && continue
7222 all_lang_configurefrags="$all_lang_configurefrags \$(srcdir)/$gcc_subdir/config-lang.in"
7223 if test "x$language" = xc && test -n "$all_lang_makefrags"; then
7224 # Put c/Make-lang.in fragment first to match serialization languages order.
7225 all_lang_makefrags="\$(srcdir)/$gcc_subdir/Make-lang.in $all_lang_makefrags"
7227 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
7229 if test -f $srcdir/$gcc_subdir/lang.opt; then
7230 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
7231 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
7233 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
7234 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
7236 all_languages="$all_languages $language"
7237 all_compilers="$all_compilers $compilers"
7238 all_outputs="$all_outputs $outputs"
7239 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
7240 case ",$enable_languages," in
7242 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
7244 AC_SUBST(enable_lto)
7251 for language in $all_selected_languages
7253 check_languages="$check_languages check-$language"
7257 for language in $all_selected_languages
7259 selftest_languages="$selftest_languages selftest-$language"
7262 # We link each language in with a set of hooks, reached indirectly via
7263 # lang.${target}. Only do so for selected languages.
7267 target_list="all.cross start.encap rest.encap tags \
7268 install-common install-man install-info install-dvi install-pdf \
7269 install-html dvi pdf html uninstall info man srcextra srcman srcinfo \
7270 mostlyclean clean distclean maintainer-clean install-plugin"
7272 for t in $target_list
7275 for lang in $all_selected_languages
7279 echo "lang.$t: $x" >> Make-hooks
7282 echo "ifeq (\$(DO_LINK_SERIALIZATION),)" >> Make-hooks
7283 echo "SERIAL_LIST =" >> Make-hooks
7284 echo else >> Make-hooks
7288 serialization_languages=c
7289 for lang in $all_selected_languages
7291 test $lang = c && continue
7292 if test $lang = lto; then
7293 serialization_languages="$serialization_languages lto1 lto2"
7295 serialization_languages="$serialization_languages $lang"
7298 for lang in $serialization_languages
7300 test $lang = c && continue
7301 lang_cnt=`expr $lang_cnt + 1`
7302 lang_list=" $prev$lang_list"
7305 echo "SERIAL_LIST = \$(wordlist \$(DO_LINK_SERIALIZATION),$lang_cnt,$lang_list)" >> Make-hooks
7306 echo endif >> Make-hooks
7307 echo "SERIAL_COUNT = `expr $lang_cnt + 1`" >> Make-hooks
7308 echo "INDEX.c = 0" >> Make-hooks
7310 for lang in $serialization_languages
7312 test $lang = c && continue
7313 echo "$lang.prev = \$(if \$(word $lang_cnt,\$(SERIAL_LIST)),\$(\$(word $lang_cnt,\$(SERIAL_LIST)).serial))" >> Make-hooks
7314 echo "INDEX.$lang = $lang_idx" >> Make-hooks
7315 lang_cnt=`expr $lang_cnt - 1`
7316 lang_idx=`expr $lang_idx + 1`
7320 # Option include files
7323 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
7324 option_includes="option-includes.mk"
7325 AC_SUBST_FILE(option_includes)
7333 echo "dir ." > .gdbinit
7334 echo "dir ${srcdir}" >> .gdbinit
7335 if test x$gdb_needs_out_file_path = xyes
7337 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
7339 if test "x$subdirs" != x; then
7342 echo "dir ${srcdir}/$s" >> .gdbinit
7345 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
7346 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
7348 # Put a breakpoint on __asan_report_error to help with debugging buffer
7351 *-fsanitize=address*)
7352 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
7356 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
7357 AC_SUBST(gcc_tooldir)
7360 # Find a directory in which to install a shared libgcc.
7362 AC_ARG_ENABLE(version-specific-runtime-libs,
7363 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
7364 [specify that runtime libraries should be
7365 installed in a compiler-specific directory])])
7367 # Substitute configuration variables
7370 AC_SUBST(all_compilers)
7371 AC_SUBST(all_gtfiles)
7372 AC_SUBST(all_lang_configurefrags)
7373 AC_SUBST(all_lang_makefrags)
7374 AC_SUBST(all_languages)
7375 AC_SUBST(all_selected_languages)
7376 AC_SUBST(build_exeext)
7377 AC_SUBST(build_install_headers_dir)
7378 AC_SUBST(build_xm_file_list)
7379 AC_SUBST(build_xm_include_list)
7380 AC_SUBST(build_xm_defines)
7381 AC_SUBST(build_file_translate)
7382 AC_SUBST(check_languages)
7383 AC_SUBST(selftest_languages)
7384 AC_SUBST(cpp_install_dir)
7385 AC_SUBST(xmake_file)
7386 AC_SUBST(tmake_file)
7387 AC_SUBST(TM_ENDIAN_CONFIG)
7388 AC_SUBST(TM_MULTILIB_CONFIG)
7389 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
7390 AC_SUBST(extra_gcc_objs)
7391 AC_SUBST(user_headers_inc_next_pre)
7392 AC_SUBST(user_headers_inc_next_post)
7393 AC_SUBST(extra_headers_list)
7394 AC_SUBST(extra_objs)
7395 AC_SUBST(extra_programs)
7396 AC_SUBST(float_h_file)
7397 AC_SUBST(gcc_config_arguments)
7398 AC_SUBST(gcc_gxx_include_dir)
7399 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
7400 AC_SUBST(gcc_gxx_libcxx_include_dir)
7401 AC_SUBST(gcc_gxx_libcxx_include_dir_add_sysroot)
7402 AC_SUBST(host_exeext)
7403 AC_SUBST(host_xm_file_list)
7404 AC_SUBST(host_xm_include_list)
7405 AC_SUBST(host_xm_defines)
7406 AC_SUBST(out_host_hook_obj)
7408 AC_SUBST(lang_opt_files)
7409 AC_SUBST(lang_specs_files)
7410 AC_SUBST(lang_tree_files)
7411 AC_SUBST(local_prefix)
7413 AC_SUBST(objc_boehm_gc)
7415 AC_SUBST(out_object_file)
7416 AC_SUBST(common_out_file)
7417 AC_SUBST(common_out_object_file)
7418 AC_SUBST(tm_file_list)
7419 AC_SUBST(tm_include_list)
7420 AC_SUBST(tm_defines)
7421 AC_SUBST(tm_p_file_list)
7422 AC_SUBST(tm_p_include_list)
7423 AC_SUBST(tm_d_file_list)
7424 AC_SUBST(tm_d_include_list)
7425 AC_SUBST(xm_file_list)
7426 AC_SUBST(xm_include_list)
7427 AC_SUBST(xm_defines)
7428 AC_SUBST(use_gcc_stdint)
7429 AC_SUBST(c_target_objs)
7430 AC_SUBST(cxx_target_objs)
7431 AC_SUBST(fortran_target_objs)
7432 AC_SUBST(d_target_objs)
7433 AC_SUBST(target_cpu_default)
7435 AC_SUBST_FILE(language_hooks)
7438 if test x${build} = x${host} ; then
7439 if test x${host} = x${target} ; then
7440 echo "Links are now set up to build a native compiler for ${target}." 1>&2
7442 echo "Links are now set up to build a cross-compiler" 1>&2
7443 echo " from ${host} to ${target}." 1>&2
7446 if test x${host} = x${target} ; then
7447 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
7448 echo " for ${target}." 1>&2
7450 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
7451 echo " from ${host} to ${target}." 1>&2
7455 AC_ARG_VAR(GMPLIBS,[How to link GMP])
7456 AC_ARG_VAR(GMPINC,[How to find GMP include files])
7458 AC_ARG_VAR(ISLLIBS,[How to link isl])
7459 AC_ARG_VAR(ISLINC,[How to find isl include files])
7460 if test "x${ISLLIBS}" != "x" ; then
7461 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
7465 AC_SUBST(pluginlibs)
7466 AC_SUBST(enable_plugin)
7467 if test x"$enable_plugin" = x"yes"; then
7468 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
7472 # Enable --enable-host-shared
7473 AC_ARG_ENABLE(host-shared,
7474 [AS_HELP_STRING([--enable-host-shared],
7475 [build host code as shared libraries])],
7476 [PICFLAG=-fPIC], [PICFLAG=])
7477 AC_SUBST(enable_host_shared)
7481 AC_ARG_ENABLE(libquadmath-support,
7482 [AS_HELP_STRING([--disable-libquadmath-support],
7483 [disable libquadmath support for Fortran])],
7484 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
7485 ENABLE_LIBQUADMATH_SUPPORT=yes)
7486 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
7487 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
7488 [Define to 1 to enable libquadmath support])
7492 # Specify what hash style to use by default.
7493 AC_ARG_WITH([linker-hash-style],
7494 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
7495 [specify the linker hash style])],
7496 [case x"$withval" in
7498 LINKER_HASH_STYLE=sysv
7501 LINKER_HASH_STYLE=gnu
7504 LINKER_HASH_STYLE=both
7507 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
7510 [LINKER_HASH_STYLE=''])
7511 if test x"${LINKER_HASH_STYLE}" != x; then
7512 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
7513 [The linker hash style])
7516 # Specify what should be the default of -fdiagnostics-color option.
7517 AC_ARG_WITH([diagnostics-color],
7518 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
7519 [specify the default of -fdiagnostics-color option
7520 auto-if-env stands for -fdiagnostics-color=auto if
7521 GCC_COLOR environment variable is present and
7522 -fdiagnostics-color=never otherwise])],
7523 [case x"$withval" in
7525 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
7528 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
7531 DIAGNOSTICS_COLOR_DEFAULT=-1
7534 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
7537 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
7540 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
7541 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
7542 [The default for -fdiagnostics-color option])
7544 # Specify what should be the default of -fdiagnostics-urls option.
7545 AC_ARG_WITH([diagnostics-urls],
7546 [AC_HELP_STRING([--with-diagnostics-urls={never,auto,auto-if-env,always}],
7547 [specify the default of -fdiagnostics-urls option
7548 auto-if-env stands for -fdiagnostics-urls=auto if
7549 GCC_URLS or TERM_URLS environment variable is present and
7550 -fdiagnostics-urls=never otherwise])],
7551 [case x"$withval" in
7553 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_NO
7556 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO
7559 DIAGNOSTICS_URLS_DEFAULT=-1
7562 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_YES
7565 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-urls])
7568 [DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO])
7569 AC_DEFINE_UNQUOTED(DIAGNOSTICS_URLS_DEFAULT, $DIAGNOSTICS_URLS_DEFAULT,
7570 [The default for -fdiagnostics-urls option])
7572 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
7573 # of jit/jit-playback.cc.
7574 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
7575 echo "gcc_driver_version: ${gcc_driver_version}"
7576 cat > gcc-driver-name.h <<EOF
7577 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
7580 # Check whether --enable-default-pie was given.
7581 AC_ARG_ENABLE(default-pie,
7582 [AS_HELP_STRING([--enable-default-pie],
7583 [enable Position Independent Executable as default])],
7584 enable_default_pie=$enableval,
7585 enable_default_pie=no)
7586 if test x$enable_default_pie = xyes ; then
7587 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
7588 [Define if your target supports default PIE and it is enabled.])
7590 AC_SUBST([enable_default_pie])
7592 # Check if -fno-PIE works.
7593 AC_CACHE_CHECK([for -fno-PIE option],
7595 [saved_CXXFLAGS="$CXXFLAGS"
7596 CXXFLAGS="$CXXFLAGS -fno-PIE"
7597 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7598 [gcc_cv_c_no_fpie=yes],
7599 [gcc_cv_c_no_fpie=no])
7600 CXXFLAGS="$saved_CXXFLAGS"])
7601 if test "$gcc_cv_c_no_fpie" = "yes"; then
7602 NO_PIE_CFLAGS="-fno-PIE"
7604 AC_SUBST([NO_PIE_CFLAGS])
7606 # Check if -no-pie works.
7607 AC_CACHE_CHECK([for -no-pie option],
7609 [saved_LDFLAGS="$LDFLAGS"
7610 LDFLAGS="$LDFLAGS -no-pie"
7611 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7612 [gcc_cv_no_pie=yes],
7614 LDFLAGS="$saved_LDFLAGS"])
7615 if test "$gcc_cv_no_pie" = "yes"; then
7616 NO_PIE_FLAG="-no-pie"
7618 AC_SUBST([NO_PIE_FLAG])
7620 # Enable Intel CET on Intel CET enabled host if jit is enabled.
7621 GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
7622 case x$enable_languages in
7629 AC_SUBST(CET_HOST_FLAGS)
7631 # Check linker supports '-z bndplt'
7632 ld_bndplt_support=no
7633 AC_MSG_CHECKING(linker -z bndplt option)
7634 if test x"$ld_is_gold" = xno; then
7635 if test $in_tree_ld = yes ; then
7636 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7637 ld_bndplt_support=yes
7639 elif test x$gcc_cv_ld != x; then
7640 # Check if linker supports -a bndplt option
7641 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
7642 ld_bndplt_support=yes
7646 if test x"$ld_bndplt_support" = xyes; then
7647 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
7648 [Define if your linker supports -z bndplt])
7650 AC_MSG_RESULT($ld_bndplt_support)
7652 # Check linker supports '--push-state'/'--pop-state'
7653 ld_pushpopstate_support=no
7654 AC_MSG_CHECKING(linker --push-state/--pop-state options)
7655 if test x"$ld_is_gold" = xno; then
7656 if test $in_tree_ld = yes ; then
7657 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7658 ld_pushpopstate_support=yes
7660 elif test x$gcc_cv_ld != x; then
7661 # Check if linker supports --push-state/--pop-state options
7662 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
7663 ld_pushpopstate_support=yes
7667 if test x"$ld_pushpopstate_support" = xyes; then
7668 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
7669 [Define if your linker supports --push-state/--pop-state])
7671 AC_MSG_RESULT($ld_pushpopstate_support)
7673 # On s390, float_t has historically been statically defined as double for no
7674 # good reason. To comply with the C standard in the light of this definition,
7675 # gcc has evaluated float expressions in double precision when in
7676 # standards-compatible mode or when given -fexcess-precision=standard. To enable
7677 # a smooth transition towards the new model used by most architectures, where
7678 # gcc describes its behavior via the macro __FLT_EVAL_METHOD__ and glibc derives
7679 # float_t from that, this behavior can be configured with
7680 # --enable-s390-excess-float-precision. When given as enabled, that flag selects
7681 # the old model. When omitted, native builds and cross compiles that have target
7682 # libc headers will detect whether libc clamps float_t to double and in that
7683 # case maintain the old model. Otherwise, they will default to the new model.
7684 AC_ARG_ENABLE(s390-excess-float-precision,
7685 [AS_HELP_STRING([--enable-s390-excess-float-precision],
7686 [on s390 targets, evaluate float with double precision
7687 when in standards-conforming mode])],
7688 [],[enable_s390_excess_float_precision=auto])
7692 if test x"$enable_s390_excess_float_precision" = xauto; then
7693 # Can we autodetect the behavior of the target libc?
7694 if test "$target" = "$host" -a "$host" = "$build"; then
7695 enable_s390_excess_float_precision=autodetect
7696 elif test "x$with_headers" != xno; then
7697 # cross build. are target headers available?
7698 # carefully coerce the build-system compiler to use target headers
7699 saved_CXXFLAGS="$CXXFLAGS"
7700 fixed_XGCC_FLAGS_FOR_TARGET=`echo "$XGCC_FLAGS_FOR_TARGET" | sed 's/-B/-idirafter/g'`
7701 CROSS_TEST_CXXFLAGS="-nostdinc $fixed_XGCC_FLAGS_FOR_TARGET"
7702 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7703 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7705 ]])], [enable_s390_excess_float_precision=autodetect], [])
7706 CXXFLAGS="$saved_CXXFLAGS"
7709 if test x"$enable_s390_excess_float_precision" = xautodetect; then
7710 saved_CXXFLAGS="$CXXFLAGS"
7711 if ! test "$target" = "$host" -a "$host" = "$build"; then
7712 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7713 unset CROSS_TEST_CXXFLAGS
7715 AC_CACHE_CHECK([for glibc clamping float_t to double],
7716 gcc_cv_float_t_clamped_to_double, [
7717 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7718 #define __FLT_EVAL_METHOD__ 0
7720 int dummy[sizeof(float_t) == sizeof(double) ? 1 : -1];
7722 [gcc_cv_float_t_clamped_to_double=yes],
7723 [gcc_cv_float_t_clamped_to_double=no])])
7724 CXXFLAGS="$saved_CXXFLAGS"
7725 enable_s390_excess_float_precision="$gcc_cv_float_t_clamped_to_double"
7727 # no way to detect behavior of target libc, default to new model
7728 enable_s390_excess_float_precision=no
7732 GCC_TARGET_TEMPLATE(ENABLE_S390_EXCESS_FLOAT_PRECISION)
7733 if test x"$enable_s390_excess_float_precision" = xyes; then
7734 AC_DEFINE(ENABLE_S390_EXCESS_FLOAT_PRECISION, 1,
7735 [Define to enable evaluating float expressions with double precision in
7736 standards-compatible mode on s390 targets.])
7741 # Configure the subdirectories
7742 # AC_CONFIG_SUBDIRS($subdirs)
7744 # Create the Makefile
7745 # and configure language subdirectories
7746 AC_CONFIG_FILES($all_outputs)
7748 AC_CONFIG_COMMANDS([default],
7750 case ${CONFIG_HEADERS} in
7751 *auto-host.h:config.in*)
7754 # Make sure all the subdirs exist.
7755 for d in $subdirs doc build common c-family
7757 test -d $d || mkdir $d
7760 [subdirs='$subdirs'])