2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2021 Free Software Foundation, Inc.
6 #This file is part of GCC.
8 #GCC is free software; you can redistribute it and/or modify it under
9 #the terms of the GNU General Public License as published by the Free
10 #Software Foundation; either version 3, or (at your option) any later
13 #GCC is distributed in the hope that it will be useful, but WITHOUT
14 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 #You should have received a copy of the GNU General Public License
19 #along with GCC; see the file COPYING3. If not see
20 #<http://www.gnu.org/licenses/>.
22 # --------------------------------
23 # Initialization and sanity checks
24 # --------------------------------
27 AC_CONFIG_SRCDIR(tree.c)
28 AC_CONFIG_HEADER(auto-host.h:config.in)
30 gcc_version=`cat $srcdir/BASE-VER`
32 # Determine the host, build, and target systems
37 # Determine the noncanonical host name, for Ada.
40 # Determine the noncanonical target name, for directory use.
41 ACX_NONCANONICAL_TARGET
43 # Used for constructing correct paths for offload compilers.
44 real_target_noncanonical=${target_noncanonical}
47 # Determine the target- and build-specific subdirectories
50 # Set program_transform_name
53 # Check for bogus environment variables.
54 # Test if LIBRARY_PATH contains the notation for the current directory
55 # since this would lead to problems installing/building glibc.
56 # LIBRARY_PATH contains the current directory if one of the following
58 # - one of the terminals (":" and ";") is the first or last sign
59 # - two terminals occur directly after each other
60 # - the path contains an element with a dot in it
61 AC_MSG_CHECKING(LIBRARY_PATH variable)
63 case ${LIBRARY_PATH} in
64 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
65 library_path_setting="contains current directory"
68 library_path_setting="ok"
72 AC_MSG_RESULT($library_path_setting)
73 if test "$library_path_setting" != "ok"; then
75 *** LIBRARY_PATH shouldn't contain the current directory when
76 *** building gcc. Please change the environment variable
77 *** and run configure again.])
80 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
81 # since this would lead to problems installing/building glibc.
82 # GCC_EXEC_PREFIX contains the current directory if one of the following
84 # - one of the terminals (":" and ";") is the first or last sign
85 # - two terminals occur directly after each other
86 # - the path contains an element with a dot in it
87 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
89 case ${GCC_EXEC_PREFIX} in
90 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
91 gcc_exec_prefix_setting="contains current directory"
94 gcc_exec_prefix_setting="ok"
98 AC_MSG_RESULT($gcc_exec_prefix_setting)
99 if test "$gcc_exec_prefix_setting" != "ok"; then
101 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
102 *** building gcc. Please change the environment variable
103 *** and run configure again.])
110 # Specify the local prefix
112 AC_ARG_WITH(local-prefix,
113 [AS_HELP_STRING([--with-local-prefix=DIR],
114 [specifies directory to put local include])],
115 [case "${withval}" in
116 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
118 *) local_prefix=$with_local_prefix ;;
121 # Default local prefix if it is empty
122 if test x$local_prefix = x; then
123 local_prefix=/usr/local
126 AC_ARG_WITH([native-system-header-dir],
127 [ --with-native-system-header-dir=dir
128 use dir as the directory to look for standard
129 system header files in. Defaults to /usr/include.],
131 case ${with_native_system_header_dir} in
132 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
133 /* | [[A-Za-z]]:[[\\/]]*) ;;
134 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
136 configured_native_system_header_dir="${withval}"
137 ], [configured_native_system_header_dir=])
139 AC_ARG_WITH(build-sysroot,
140 [AS_HELP_STRING([--with-build-sysroot=sysroot],
141 [use sysroot as the system root during the build])],
142 [if test x"$withval" != x ; then
143 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
145 [SYSROOT_CFLAGS_FOR_TARGET=])
146 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
148 if test "x$prefix" = xNONE; then
149 test_prefix=/usr/local
153 if test "x$exec_prefix" = xNONE; then
154 test_exec_prefix=$test_prefix
156 test_exec_prefix=$exec_prefix
160 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
161 [search for usr/lib, usr/include, et al, within DIR])],
163 case ${with_sysroot} in
165 */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;;
167 case ${with_sysroot} in
168 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
169 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
172 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
173 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
175 case ${TARGET_SYSTEM_ROOT} in
176 "${test_prefix}"|"${test_prefix}/"*|\
177 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
178 '${prefix}'|'${prefix}/'*|\
179 '${exec_prefix}'|'${exec_prefix}/'*)
180 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
181 TARGET_SYSTEM_ROOT_DEFINE="$t"
186 TARGET_SYSTEM_ROOT_DEFINE=
187 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
189 AC_SUBST(TARGET_SYSTEM_ROOT)
190 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
191 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
193 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
194 # passed in by the toplevel make and thus we'd get different behavior
195 # depending on where we built the sources.
197 # Specify the g++ header file directory
198 AC_ARG_WITH(gxx-include-dir,
199 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
200 [specifies directory to put g++ header files])],
201 [case "${withval}" in
202 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
204 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
207 # If both --with-sysroot and --with-gxx-include-dir are passed, we interpolate
208 # the former in the latter and, upon success, compute gcc_gxx_include_dir as
209 # relative to the sysroot.
210 gcc_gxx_include_dir_add_sysroot=0
212 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
213 if test x${gcc_gxx_include_dir} = x; then
214 if test x${enable_version_specific_runtime_libs} = xyes; then
215 gcc_gxx_include_dir='${libsubdir}/include/c++'
217 libstdcxx_incdir='include/c++/$(version)'
218 if test x$host != x$target; then
219 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
221 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
223 elif test "${with_sysroot+set}" = set; then
224 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
225 if test "${gcc_gxx_without_sysroot}"; then
226 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
227 gcc_gxx_include_dir_add_sysroot=1
231 # Configuration for an alternate set of C++ headers.
232 gcc_gxx_libcxx_include_dir=
233 # Specify the alternate g++ header file directory
234 AC_ARG_WITH(gxx-libcxx-include-dir,
235 [AS_HELP_STRING([--with-gxx-libcxx-include-dir=DIR],
236 [specifies directory to find libc++ header files])],
237 [case "${withval}" in
238 yes) AC_MSG_ERROR(bad value ${withval} given for libc++ include directory) ;;
240 *) gcc_gxx_libcxx_include_dir=$with_gxx_libcxx_include_dir ;;
243 # If both --with-sysroot and --with-gxx-libcxx-include-dir are passed, we
244 # check to see if the latter starts with the former and, upon success, compute
245 # gcc_gxx_libcxx_include_dir as relative to the sysroot.
246 gcc_gxx_libcxx_include_dir_add_sysroot=0
248 if test x${gcc_gxx_libcxx_include_dir} != x; then
249 AC_DEFINE(ENABLE_STDLIB_OPTION, 1,
250 [Define if the -stdlib= option should be enabled.])
252 AC_DEFINE(ENABLE_STDLIB_OPTION, 0)
254 # ??? This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
255 if test x${gcc_gxx_libcxx_include_dir} = x; then
256 if test x${enable_version_specific_runtime_libs} = xyes; then
257 gcc_gxx_libcxx_include_dir='${libsubdir}/libc++_include/c++/v1'
259 libcxx_incdir='libc++_include/c++/$(version)/v1'
260 if test x$host != x$target; then
261 libcxx_incdir="$target_alias/$libcxx_incdir"
263 gcc_gxx_libcxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libcxx_incdir"
265 elif test "${with_sysroot+set}" = set; then
266 gcc_gxx_libcxx_without_sysroot=`expr "${gcc_gxx_libcxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
267 if test "${gcc_gxx_libcxx_without_sysroot}"; then
268 gcc_gxx_libcxx_include_dir="${gcc_gxx_libcxx_without_sysroot}"
269 gcc_gxx_libcxx_include_dir_add_sysroot=1
273 AC_ARG_WITH(cpp_install_dir,
274 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
275 [install the user visible C preprocessor in DIR
276 (relative to PREFIX) as well as PREFIX/bin])],
277 [if test x$withval = xyes; then
278 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
279 elif test x$withval != xno; then
280 cpp_install_dir=$withval
283 # We would like to our source tree to be readonly. However when releases or
284 # pre-releases are generated, the flex/bison generated files as well as the
285 # various formats of manuals need to be included along with the rest of the
286 # sources. Therefore we have --enable-generated-files-in-srcdir to do
289 AC_MSG_CHECKING([whether to place generated files in the source directory])
290 dnl generated-files-in-srcdir is disabled by default
291 AC_ARG_ENABLE(generated-files-in-srcdir,
292 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
293 [put copies of generated files in source dir
294 intended for creating source tarballs for users
295 without texinfo bison or flex])],
296 generated_files_in_srcdir=$enableval,
297 generated_files_in_srcdir=no)
299 AC_MSG_RESULT($generated_files_in_srcdir)
301 if test "$generated_files_in_srcdir" = "yes"; then
308 # -------------------
309 # Find default linker
310 # -------------------
314 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
315 gnu_ld_flag="$with_gnu_ld",
320 ld64_flag=yes # Darwin can only use a ld64-compatible linker.
321 dsymutil_flag=yes # Darwin uses dsymutil to link debug.
329 # With pre-defined ld
331 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
332 DEFAULT_LINKER="$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"$srcdir"/ada/libgnat])
439 # Do configure tests with the C++ compiler, since that's what we build with.
442 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
443 # optimizations to be activated explicitly by the toplevel.
446 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
447 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
452 # Determine PICFLAG for target gnatlib.
453 GCC_PICFLAG_FOR_TARGET
454 AC_SUBST(PICFLAG_FOR_TARGET)
456 # -------------------------
457 # Check C compiler features
458 # -------------------------
460 AC_USE_SYSTEM_EXTENSIONS
467 # sizeof(char) is 1 by definition.
468 AC_CHECK_SIZEOF(void *)
469 AC_CHECK_SIZEOF(short)
471 AC_CHECK_SIZEOF(long)
472 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
474 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
475 AC_MSG_ERROR([uint64_t or int64_t not found])
478 # check what underlying integer type int64_t uses
479 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
480 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
484 template <typename T> struct X { };
486 struct X<long> { typedef long t; };
487 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
488 if test "$ac_cv_int64_t_type" = "long"; then
489 AC_DEFINE(INT64_T_IS_LONG, 1,
490 [Define if int64_t uses long as underlying type.])
492 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
496 template <typename T> struct X { };
498 struct X<long long> { typedef long long t; };
499 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
502 AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [
503 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
505 ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])])
506 if test $ac_cv_std_swap_in_utility = yes; then
507 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1,
508 [Define if <utility> defines std::swap.])
511 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
512 # If the host compiler is affected by the bug, and we build with optimization
513 # enabled (which happens e.g. when cross-compiling), the pool allocator may
514 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
515 # Since there is no reliable feature check for the presence of this bug,
516 # we simply use a GCC version number check. (This should never trigger for
517 # stages 2 or 3 of a native bootstrap.)
519 if test "$GCC" = yes; then
520 saved_CXXFLAGS="$CXXFLAGS"
522 # The following test compilation will succeed if and only if $CXX accepts
523 # -fno-strict-aliasing *and* is older than GCC 4.3.
524 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
525 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
526 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
527 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
528 #error compiler not affected by placement new aliasing bug
531 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
532 [AC_MSG_RESULT([no])])
534 CXXFLAGS="$saved_CXXFLAGS"
536 AC_SUBST(aliasing_flags)
540 # ---------------------
541 # Warnings and checking
542 # ---------------------
544 # Check $CC warning features (if it's GCC).
545 # We want to use -pedantic, but we don't want warnings about
549 # * C++11 narrowing conversions in { }
550 # So, we only use -pedantic if we can disable those warnings.
552 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
553 AC_ARG_ENABLE(build-format-warnings,
554 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
555 [],[enable_build_format_warnings=yes])
556 AS_IF([test $enable_build_format_warnings = no],
557 [wf_opt=-Wno-format],[wf_opt=])
558 ACX_PROG_CXX_WARNING_OPTS(
559 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ],
560 [-Wcast-qual -Wno-error=format-diag $wf_opt])),
562 ACX_PROG_CC_WARNING_OPTS(
563 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes ],
564 [-Wno-error=format-diag])), [c_loose_warn])
565 ACX_PROG_CXX_WARNING_OPTS(
566 m4_quote(m4_do([-Wmissing-format-attribute ],
567 [-Woverloaded-virtual])), [strict_warn])
568 ACX_PROG_CC_WARNING_OPTS(
569 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
570 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
571 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
572 [-Wno-overlength-strings])), [strict_warn])
573 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
575 # The above macros do nothing if the compiler is not GCC. However, the
576 # Makefile has more goo to add other flags, so these variables are used
577 # to enable warnings only for GCC.
580 if test "x$GCC" = "xyes"; then
581 warn_cflags='$(GCC_WARN_CFLAGS)'
582 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
584 AC_SUBST(warn_cflags)
585 AC_SUBST(warn_cxxflags)
587 # Disable exceptions and RTTI if building with g++
588 ACX_PROG_CC_WARNING_OPTS(
589 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
592 # Enable expensive internal checks
594 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
598 AC_ARG_ENABLE(checking,
599 [AS_HELP_STRING([[--enable-checking[=LIST]]],
600 [enable expensive run-time checks. With LIST,
601 enable only specific categories of checks.
602 Categories are: yes,no,all,none,release.
603 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc,
604 rtlflag,rtl,runtime,tree,valgrind,types])],
605 [ac_checking_flags="${enableval}"],[
606 # Determine the default checks.
607 if test x$is_release = x ; then
608 ac_checking_flags=yes,extra
610 ac_checking_flags=release
612 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
613 for check in release $ac_checking_flags
616 # these set all the flags to specific states
617 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
618 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ;
619 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
620 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
621 ac_tree_checking=1 ; ac_valgrind_checking= ;
622 ac_types_checking=1 ;;
623 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
624 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
625 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
626 ac_rtlflag_checking= ; ac_runtime_checking= ;
627 ac_tree_checking= ; ac_valgrind_checking= ;
628 ac_types_checking= ;;
629 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
630 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ;
631 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
632 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
633 ac_tree_checking=1 ; ac_valgrind_checking= ;
634 ac_types_checking=1 ;;
635 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
636 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
637 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
638 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
639 ac_tree_checking= ; ac_valgrind_checking= ;
640 ac_types_checking= ;;
641 # these enable particular checks
642 assert) ac_assert_checking=1 ;;
643 df) ac_df_checking=1 ;;
644 extra) ac_extra_checking=1 ;;
645 fold) ac_fold_checking=1 ;;
646 gc) ac_gc_checking=1 ;;
647 gcac) ac_gc_always_collect=1 ;;
648 gimple) ac_gimple_checking=1 ;;
649 misc) ac_checking=1 ;;
650 rtl) ac_rtl_checking=1 ;;
651 rtlflag) ac_rtlflag_checking=1 ;;
652 runtime) ac_runtime_checking=1 ;;
653 tree) ac_tree_checking=1 ;;
654 types) ac_types_checking=1 ;;
655 valgrind) ac_valgrind_checking=1 ;;
656 *) AC_MSG_ERROR(unknown check category $check) ;;
662 if test x$ac_checking != x ; then
663 AC_DEFINE(CHECKING_P, 1,
664 [Define to 0/1 if you want more run-time sanity checks. This one gets a grab
665 bag of miscellaneous but relatively cheap checks.])
666 nocommon_flag=-fno-common
668 AC_DEFINE(CHECKING_P, 0)
670 AC_SUBST(nocommon_flag)
671 if test x$ac_extra_checking != x ; then
672 AC_DEFINE(ENABLE_EXTRA_CHECKING, 1,
673 [Define to 0/1 if you want extra run-time checking that might affect code
676 AC_DEFINE(ENABLE_EXTRA_CHECKING, 0)
678 if test x$ac_df_checking != x ; then
679 AC_DEFINE(ENABLE_DF_CHECKING, 1,
680 [Define if you want more run-time sanity checks for dataflow.])
682 if test x$ac_assert_checking != x ; then
683 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
684 [Define if you want assertions enabled. This is a cheap check.])
686 if test x$ac_gimple_checking != x ; then
687 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
688 [Define if you want operations on GIMPLE (the basic data structure of
689 the high-level optimizers) to be checked for dynamic type safety at
690 runtime. This is moderately expensive.])
692 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
693 if test x$ac_runtime_checking != x ; then
694 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
695 [Define if you want runtime assertions enabled. This is a cheap check.])
697 if test x$ac_tree_checking != x ; then
698 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
699 [Define if you want all operations on trees (the basic data
700 structure of the front ends) to be checked for dynamic type safety
701 at runtime. This is moderately expensive.
705 if test x$ac_types_checking != x ; then
706 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
707 [Define if you want all gimple types to be verified after gimplifiation.
711 AC_SUBST(TREECHECKING)
712 if test x$ac_rtl_checking != x ; then
713 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
714 [Define if you want all operations on RTL (the basic data structure
715 of the optimizer and back end) to be checked for dynamic type safety
716 at runtime. This is quite expensive.])
718 if test x$ac_rtlflag_checking != x ; then
719 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
720 [Define if you want RTL flag accesses to be checked against the RTL
721 codes that are supported for each access macro. This is relatively
724 if test x$ac_gc_checking != x ; then
725 AC_DEFINE(ENABLE_GC_CHECKING, 1,
726 [Define if you want the garbage collector to do object poisoning and
727 other memory allocation checks. This is quite expensive.])
729 if test x$ac_gc_always_collect != x ; then
730 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
731 [Define if you want the garbage collector to operate in maximally
732 paranoid mode, validating the entire heap and collecting garbage at
733 every opportunity. This is extremely expensive.])
735 if test x$ac_fold_checking != x ; then
736 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
737 [Define if you want fold checked that it never destructs its argument.
738 This is quite expensive.])
740 valgrind_path_defines=
743 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
744 dnl # an if statement. This was the source of very frustrating bugs
745 dnl # in converting to autoconf 2.5x!
746 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
748 # It is certainly possible that there's valgrind but no valgrind.h.
749 # GCC relies on making annotations so we must have both.
750 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
751 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
752 [[#include <valgrind/memcheck.h>
753 #ifndef VALGRIND_DISCARD
754 #error VALGRIND_DISCARD not defined
756 [gcc_cv_header_valgrind_memcheck_h=yes],
757 [gcc_cv_header_valgrind_memcheck_h=no])
758 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
759 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
760 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
761 [[#include <memcheck.h>
762 #ifndef VALGRIND_DISCARD
763 #error VALGRIND_DISCARD not defined
765 [gcc_cv_header_memcheck_h=yes],
766 [gcc_cv_header_memcheck_h=no])
767 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
768 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
769 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
770 [Define if valgrind's valgrind/memcheck.h header is installed.])
772 if test $gcc_cv_header_memcheck_h = yes; then
773 AC_DEFINE(HAVE_MEMCHECK_H, 1,
774 [Define if valgrind's memcheck.h header is installed.])
777 if test x$ac_valgrind_checking != x ; then
778 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
779 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
780 if test "x$valgrind_path" = "x" \
781 || (test $have_valgrind_h = no \
782 && test $gcc_cv_header_memcheck_h = no \
783 && test $gcc_cv_header_valgrind_memcheck_h = no); then
784 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
786 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
787 valgrind_command="$valgrind_path -q"
788 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
789 [Define if you want to run subprograms and generated programs
790 through valgrind (a memory checker). This is extremely expensive.])
792 AC_SUBST(valgrind_path_defines)
793 AC_SUBST(valgrind_command)
795 # Enable code coverage collection
796 AC_ARG_ENABLE(coverage,
797 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
798 [enable compiler's code coverage collection.
799 Use to measure compiler performance and locate
800 unused parts of the compiler. With LEVEL, specify
801 optimization. Values are opt, noopt,
803 [case "${enableval}" in
805 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0 -fkeep-static-functions"
808 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2 -fkeep-static-functions"
811 # a.k.a. --disable-coverage
815 AC_MSG_ERROR(unknown coverage setting $enableval)
819 AC_SUBST(coverage_flags)
821 AC_ARG_ENABLE(gather-detailed-mem-stats,
822 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
823 [enable detailed memory allocation stats gathering])], [],
824 [enable_gather_detailed_mem_stats=no])
825 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
826 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
827 [Define to enable detailed memory allocation stats gathering.])
829 AC_ARG_ENABLE(valgrind-annotations,
830 [AS_HELP_STRING([--enable-valgrind-annotations],
831 [enable valgrind runtime interaction])], [],
832 [enable_valgrind_annotations=no])
833 if test x$enable_valgrind_annotations != xno \
834 || test x$ac_valgrind_checking != x; then
835 if (test $have_valgrind_h = no \
836 && test $gcc_cv_header_memcheck_h = no \
837 && test $gcc_cv_header_valgrind_memcheck_h = no); then
838 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
840 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
841 [Define to get calls to the valgrind runtime enabled.])
844 # -------------------------------
845 # Miscenalleous configure options
846 # -------------------------------
850 [AS_HELP_STRING([--with-stabs],
851 [arrange to use stabs instead of host debug format])],
855 # Determine whether or not multilibs are enabled.
856 AC_ARG_ENABLE(multilib,
857 [AS_HELP_STRING([--enable-multilib],
858 [enable library support for multiple ABIs])],
859 [], [enable_multilib=yes])
860 AC_SUBST(enable_multilib)
862 # Determine whether or not multiarch is enabled.
863 AC_ARG_ENABLE(multiarch,
864 [AS_HELP_STRING([--enable-multiarch],
865 [enable support for multiarch paths])],
866 [case "${enableval}" in
867 yes|no|auto) enable_multiarch=$enableval;;
868 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
869 esac], [enable_multiarch=auto])
870 if test x${enable_multiarch} = xauto; then
871 if test x${with_native_system_header_dir} != x; then
872 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
875 if test x$host != x$target && test "x$with_sysroot" = x; then
876 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
880 AC_MSG_CHECKING(for multiarch configuration)
881 AC_SUBST(enable_multiarch)
882 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
884 # needed for setting the multiarch name for soft-float/hard-float ABIs
888 # default stack clash protection guard size as power of twos in bytes.
889 # Please keep these in sync with params.def.
893 # Keep the default value when the option is not used to 0, this allows us to
894 # distinguish between the cases where the user specifially set a value via
895 # configure and when the normal default value is used.
896 AC_ARG_WITH(stack-clash-protection-guard-size,
897 [AS_HELP_STRING([--with-stack-clash-protection-guard-size=size],
898 [Set the default stack clash protection guard size for specific targets as a power of two in bytes.])],
899 [DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size"], [DEFAULT_STK_CLASH_GUARD_SIZE=0])
900 if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \
901 && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \
902 || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then
903 AC_MSG_ERROR(m4_normalize([
904 Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. \
905 Must be between $stk_clash_min and $stk_clash_max.]))
908 AC_DEFINE_UNQUOTED(DEFAULT_STK_CLASH_GUARD_SIZE, $DEFAULT_STK_CLASH_GUARD_SIZE,
909 [Define to larger than zero set the default stack clash protector size.])
911 # Enable __cxa_atexit for C++.
912 AC_ARG_ENABLE(__cxa_atexit,
913 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
916 # Enable C extension for decimal float if target supports it.
917 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
919 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
920 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
921 [Define to 1 to enable decimal float extension to C.])
923 # Use default_decimal_float for dependency.
924 enable_decimal_float=$default_decimal_float
926 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
927 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
928 [Define to 1 to specify that we are using the BID decimal floating
929 point format instead of DPD])
931 # Enable C extension for fixed-point arithmetic.
932 AC_ARG_ENABLE(fixed-point,
933 [AS_HELP_STRING([--enable-fixed-point],
934 [enable fixed-point arithmetic extension to C])],
939 enable_fixed_point=yes
943 enable_fixed_point=yes
946 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
947 enable_fixed_point=no
951 AC_SUBST(enable_fixed_point)
953 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
954 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
955 [Define to 1 to enable fixed-point arithmetic extension to C.])
958 # Pass with no value to take the default
959 # Pass with a value to specify a thread package
960 AC_ARG_ENABLE(threads,
961 [AS_HELP_STRING([[--enable-threads[=LIB]]],
962 [enable thread usage for target GCC,
963 using LIB thread package])],,
967 [AS_HELP_STRING([--enable-tls],
968 [enable or disable generation of tls code
969 overriding the assembler check for tls support])],
973 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
974 Valid choices are 'yes' and 'no'.]) ;;
978 AC_ARG_ENABLE(vtable-verify,
979 [AS_HELP_STRING([--enable-vtable-verify],
980 [enable vtable verification feature])],,
981 [enable_vtable_verify=no])
982 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
983 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
984 [Define 0/1 if vtable verification feature is enabled.])
986 AC_ARG_ENABLE(analyzer,
987 [AS_HELP_STRING([--disable-analyzer],
988 [disable -fanalyzer static analyzer])],
989 if test x$enable_analyzer = xno; then
995 AC_DEFINE_UNQUOTED(ENABLE_ANALYZER, $analyzer,
996 [Define 0/1 if static analyzer feature is enabled.])
998 AC_ARG_ENABLE(objc-gc,
999 [AS_HELP_STRING([--enable-objc-gc],
1000 [enable the use of Boehm's garbage collector with
1001 the GNU Objective-C runtime])],
1002 if test x$enable_objc_gc = xno; then
1010 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
1011 dwarf2="$with_dwarf2",
1014 AC_ARG_ENABLE(shared,
1015 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
1017 case $enable_shared in
1021 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
1022 for pkg in $enableval; do
1023 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
1030 ], [enable_shared=yes])
1031 AC_SUBST(enable_shared)
1034 [ --disable-gcov don't provide libgcov and related host tools],
1035 [], [enable_gcov=yes])
1036 AC_SUBST(enable_gcov)
1039 [AS_HELP_STRING([--with-specs=SPECS],
1040 [add SPECS to driver command-line processing])],
1041 [CONFIGURE_SPECS=$withval],
1044 AC_SUBST(CONFIGURE_SPECS)
1046 ACX_PKGVERSION([GCC])
1047 ACX_BUGURL([https://gcc.gnu.org/bugs/])
1049 # Allow overriding the default URL for documentation
1050 AC_ARG_WITH(documentation-root-url,
1051 AS_HELP_STRING([--with-documentation-root-url=URL],
1052 [Root for documentation URLs]),
1054 yes) AC_MSG_ERROR([documentation root URL not specified]) ;;
1055 no) AC_MSG_ERROR([documentation root URL not specified]) ;;
1056 */) DOCUMENTATION_ROOT_URL="$withval" ;;
1057 *) AC_MSG_ERROR([documentation root URL does not end with /]) ;;
1059 DOCUMENTATION_ROOT_URL="https://gcc.gnu.org/onlinedocs/"
1061 AC_DEFINE_UNQUOTED(DOCUMENTATION_ROOT_URL,"$DOCUMENTATION_ROOT_URL",
1062 [Define to the root for documentation URLs.])
1064 # Allow overriding the default URL for GCC changes
1065 AC_ARG_WITH(changes-root-url,
1066 AS_HELP_STRING([--with-changes-root-url=URL],
1067 [Root for GCC changes URLs]),
1069 yes) AC_MSG_ERROR([changes root URL not specified]) ;;
1070 no) AC_MSG_ERROR([changes root URL not specified]) ;;
1071 */) CHANGES_ROOT_URL="$withval" ;;
1072 *) AC_MSG_ERROR([changes root URL does not end with /]) ;;
1074 CHANGES_ROOT_URL="https://gcc.gnu.org/"
1076 AC_DEFINE_UNQUOTED(CHANGES_ROOT_URL,"$CHANGES_ROOT_URL",
1077 [Define to the root for URLs about GCC changes.])
1079 # Sanity check enable_languages in case someone does not run the toplevel
1080 # configure # script.
1081 AC_ARG_ENABLE(languages,
1082 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
1083 [case ,${enable_languages}, in
1085 # go safe -- we cannot be much sure without the toplevel
1087 # analysis of which target libs are present and usable
1091 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
1096 enable_languages=c,${enable_languages}
1099 [enable_languages=c])
1101 # If top-level libada has been disabled, then wire in install-gnatlib
1102 # invocation with `make install', so that one can build and install
1103 # the library manually with `make -C gcc all gnatlib gnattools install'.
1104 if test x"$enable_libada" = xno; then
1105 gnat_install_lib=gnat-install-lib
1109 AC_SUBST(gnat_install_lib)
1111 if test x"$enable_as_accelerator_for" != x; then
1112 AC_DEFINE(ACCEL_COMPILER, 1,
1113 [Define if this compiler should be built as the offload target compiler.])
1114 enable_as_accelerator=yes
1117 # In this case we expect offload compiler to be built as native, so we
1118 # need to rename the driver to avoid clashes with host's drivers.
1119 program_transform_name="s&^&${target}-&" ;;
1121 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
1122 program_transform_name=`echo $program_transform_name | sed $sedscript`
1123 accel_dir_suffix=/accel/${target_noncanonical}
1124 real_target_noncanonical=${enable_as_accelerator_for}
1126 AC_SUBST(enable_as_accelerator)
1127 AC_SUBST(real_target_noncanonical)
1128 AC_SUBST(accel_dir_suffix)
1130 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
1131 tgt=`echo $tgt | sed 's/=.*//'`
1135 *-intelmic-* | *-intelmicemul-*)
1136 omp_device_property=omp-device-properties-i386
1137 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/i386/t-omp-device"
1140 omp_device_property=omp-device-properties-gcn
1141 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/gcn/t-omp-device"
1144 omp_device_property=omp-device-properties-nvptx
1145 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/nvptx/t-omp-device"
1148 AC_MSG_ERROR([unknown offload target specified])
1151 omp_device_properties="${omp_device_properties} ${tgt}=${omp_device_property}"
1152 omp_device_property_deps="${omp_device_property_deps} ${omp_device_property}"
1154 if test x"$offload_targets" = x; then
1155 offload_targets=$tgt
1157 offload_targets="$offload_targets,$tgt"
1160 AC_SUBST(omp_device_properties)
1161 AC_SUBST(omp_device_property_deps)
1163 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
1164 [Define to offload targets, separated by commas.])
1165 if test x"$enable_offloading" != x; then
1166 AC_DEFINE(ENABLE_OFFLOADING, 1,
1167 [Define this to enable support for offloading.])
1169 AC_DEFINE(ENABLE_OFFLOADING, 0,
1170 [Define this to enable support for offloading.])
1173 if test "x$enable_offload_defaulted" = xyes; then
1174 AC_DEFINE(OFFLOAD_DEFAULTED, 1,
1175 [Define to 1 to if -foffload is defaulted])
1178 AC_ARG_WITH(multilib-list,
1179 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
1181 with_multilib_list=default)
1183 AC_ARG_WITH(multilib-generator,
1184 [AS_HELP_STRING([--with-multilib-generator], [Multi-libs configuration string (RISC-V only)])],
1186 with_multilib_generator=default)
1188 # -------------------------
1189 # Checks for other programs
1190 # -------------------------
1194 # Find some useful tools
1196 # We need awk to create options.c and options.h.
1197 # Bail out if it's missing.
1199 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1206 AC_SUBST(ranlib_flags)
1210 # See if cmp has --ignore-initial.
1211 gcc_AC_PROG_CMP_IGNORE_INITIAL
1213 # See if we have the mktemp command.
1214 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1216 # See if makeinfo has been installed and is modern enough
1217 # that we can use it.
1218 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1219 [GNU texinfo.* \([0-9][0-9.]*\)],
1220 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1221 if test $gcc_cv_prog_makeinfo_modern = no; then
1223 *** Makeinfo is missing or too old.
1224 *** Info documentation will not be built.])
1229 AC_SUBST(BUILD_INFO)
1231 # Is pod2man recent enough to regenerate manpages?
1232 AC_MSG_CHECKING([for recent Pod::Man])
1233 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1235 GENERATED_MANPAGES=generated-manpages
1240 AC_SUBST(GENERATED_MANPAGES)
1242 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1245 dnl Don't use AC_PROG_LEX; we insist on flex.
1246 dnl LEXLIB is not useful in gcc.
1247 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1250 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1252 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1253 # check for build == host before using them.
1256 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1257 && test -d ../binutils ; then
1258 NM='${objdir}/../binutils/nm-new'
1260 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1264 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1265 && test -d ../binutils ; then
1266 AR='${objdir}/../binutils/ar'
1268 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1271 # The jit documentation looks better if built with sphinx, but can be
1272 # built with texinfo if sphinx is not available.
1273 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1274 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1276 # --------------------
1277 # Checks for C headers
1278 # --------------------
1280 # Need to reject headers which give warnings, so that the -Werror bootstrap
1281 # works later. *sigh* This needs to come before all header checks.
1288 AC_HEADER_TIOCGWINSZ
1289 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1290 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1291 sys/resource.h sys/param.h sys/times.h sys/stat.h sys/locking.h \
1292 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1294 # Check for thread headers.
1295 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1296 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1298 # These tests can't be done till we know if we have limits.h.
1302 # ----------------------
1303 # Checks for C++ headers
1304 # ----------------------
1306 dnl Autoconf will give an error in the configure script if there is no
1307 dnl C++ preprocessor. Hack to prevent that.
1308 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1310 m4_popdef([AC_MSG_ERROR])[]dnl
1312 AC_CHECK_HEADERS(unordered_map)
1313 AC_CHECK_HEADERS(tr1/unordered_map)
1314 AC_CHECK_HEADERS(ext/hash_map)
1317 # Dependency checking.
1321 AC_CONFIG_COMMANDS([gccdepdir],[
1322 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1323 for lang in $subdirs c-family common analyzer rtl-ssa
1325 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1326 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1328 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1335 # These libraries may be used by collect2.
1336 # We may need a special search path to get them linked.
1337 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1339 for libs in '' -lld -lmld \
1340 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1341 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1344 AC_TRY_LINK_FUNC(ldopen,
1345 [gcc_cv_collect2_libs="$libs"; break])
1348 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1349 case $gcc_cv_collect2_libs in
1351 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1353 AC_SUBST(COLLECT2_LIBS)
1355 # When building Ada code on Alpha, we need exc_resume which is usually in
1356 # -lexc. So test for it.
1359 AC_SEARCH_LIBS(exc_resume, exc)
1362 AC_SUBST(GNAT_LIBEXC)
1364 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1367 AC_SEARCH_LIBS(kstat_open, kstat)
1368 EXTRA_GCC_LIBS="$LIBS"
1370 AC_SUBST(EXTRA_GCC_LIBS)
1372 # Solaris needs libsocket and libnsl for socket functions before 11.4.
1373 # C++ needs those for libcody.
1381 # Some systems put ldexp and frexp in libm instead of libc; assume
1382 # they're both in the same place. jcf-dump needs them.
1385 AC_SEARCH_LIBS(ldexp, m)
1390 # Some systems need dlopen
1393 AC_SEARCH_LIBS(dlopen, dl)
1398 # Use <inttypes.h> only if it exists,
1399 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1401 AC_MSG_CHECKING(for inttypes.h)
1402 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1403 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1404 [[#define __STDC_FORMAT_MACROS
1405 #include <sys/types.h>
1406 #include <inttypes.h>]],
1411 [gcc_cv_header_inttypes_h=yes],
1412 [gcc_cv_header_inttypes_h=no])])
1413 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1414 if test $gcc_cv_header_inttypes_h = yes; then
1415 AC_DEFINE(HAVE_INTTYPES_H, 1,
1416 [Define if you have a working <inttypes.h> header file.])
1419 # Look for the ZSTD package.
1422 AC_SUBST(ZSTD_INCLUDE)
1426 AC_SUBST(ZSTD_CPPFLAGS)
1427 AC_SUBST(ZSTD_LDFLAGS)
1429 [AS_HELP_STRING([--with-zstd=PATH],
1430 [specify prefix directory for installed zstd library.
1431 Equivalent to --with-zstd-include=PATH/include
1432 plus --with-zstd-lib=PATH/lib])])
1433 AC_ARG_WITH(zstd-include,
1434 [AS_HELP_STRING([--with-zstd-include=PATH],
1435 [specify directory for installed zstd include files])])
1436 AC_ARG_WITH(zstd-lib,
1437 [AS_HELP_STRING([--with-zstd-lib=PATH],
1438 [specify directory for the installed zstd library])])
1439 case "x$with_zstd" in
1445 *) ZSTD_INCLUDE=$with_zstd/include
1446 ZSTD_LIB=$with_zstd/lib
1450 if test "x$with_zstd" != xno; then
1451 if test "x$with_zstd_include" != x; then
1452 ZSTD_INCLUDE=$with_zstd_include
1454 if test "x$with_zstd_lib" != x; then
1455 ZSTD_LIB=$with_zstd_lib
1457 if test "x$ZSTD_INCLUDE" != x \
1458 && test "x$ZSTD_INCLUDE" != xno; then
1459 ZSTD_CPPFLAGS=-I$ZSTD_INCLUDE
1461 if test "x$ZSTD_LIB" != x \
1462 && test "x$ZSTD_LIB" != xno; then
1463 ZSTD_LDFLAGS=-L$ZSTD_LIB
1466 CXXFLAGS="$CXXFLAGS $ZSTD_CPPFLAGS"
1467 LDFLAGS="$LDFLAGS $ZSTD_LDFLAGS"
1469 AC_MSG_CHECKING(for zstd.h)
1470 AC_CACHE_VAL(gcc_cv_header_zstd_h,
1471 # We require version 1.3.0 or later. This is the first version that has
1472 # ZSTD_getFrameContentSize.
1473 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1475 #if ZSTD_VERSION_NUMBER < 10300
1476 #error "need zstd 1.3.0 or better"
1478 [gcc_cv_header_zstd_h=yes],
1479 [gcc_cv_header_zstd_h=no])])
1480 AC_MSG_RESULT($gcc_cv_header_zstd_h)
1481 if test $gcc_cv_header_zstd_h = yes; then
1482 AC_DEFINE(HAVE_ZSTD_H, 1,
1483 [Define if you have a working <zstd.h> header file.])
1484 elif test "x$with_zstd" != x; then
1485 as_fn_error $? "Unable to find zstd.h. See config.log for details." "$LINENO" 5
1488 # LTO can use zstd compression algorithm
1491 AC_SEARCH_LIBS(ZSTD_compress, zstd)
1497 dnl Disabled until we have a complete test for buggy enum bitfields.
1498 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1500 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1501 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1502 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1503 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1504 putchar_unlocked putc_unlocked)
1505 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1506 popen sysconf strsignal getrusage nl_langinfo \
1507 gettimeofday mbstowcs wcswidth mmap posix_fallocate setlocale \
1508 gcc_UNLOCKED_FUNCS madvise mallinfo mallinfo2 fstatat)
1510 if test x$ac_cv_func_mbstowcs = xyes; then
1511 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1512 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1518 [gcc_cv_func_mbstowcs_works=yes],
1519 [gcc_cv_func_mbstowcs_works=no],
1520 [gcc_cv_func_mbstowcs_works=yes])])
1521 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1522 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1523 [Define this macro if mbstowcs does not crash when its
1524 first argument is NULL.])
1528 AC_CHECK_TYPE(ssize_t, int)
1529 AC_CHECK_TYPE(caddr_t, char *)
1530 AC_CHECK_TYPE(sighander_t,
1531 AC_DEFINE(HAVE_SIGHANDLER_T, 1,
1532 [Define if <sys/signal.h> defines sighandler_t]),
1535 GCC_AC_FUNC_MMAP_BLACKLIST
1539 # Under VMS, vfork works very differently than on Unix. The standard test
1540 # won't work, and it isn't easily adaptable. It makes more sense to
1542 ac_cv_func_vfork_works=yes
1549 # Until we have in-tree GNU iconv:
1551 if test -f "$LTLIBICONV"; then
1552 LIBICONV_DEP=$LTLIBICONV
1554 AC_SUBST(LIBICONV_DEP)
1560 # We will need to find libiberty.h and ansidecl.h
1561 saved_CFLAGS="$CFLAGS"
1562 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1563 saved_CXXFLAGS="$CXXFLAGS"
1564 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1566 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1567 # normal autoconf function for these. But force definition of
1568 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1569 # basename handling in libiberty.h.
1570 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1571 #undef HAVE_DECL_BASENAME
1572 #define HAVE_DECL_BASENAME 1
1573 #include "ansidecl.h"
1574 #include "system.h"])
1576 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1577 madvise stpcpy strnlen strsignal strverscmp \
1578 strtol strtoul strtoll strtoull setenv unsetenv \
1579 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1580 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1581 #include "ansidecl.h"
1582 #include "system.h"])
1584 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1585 #include "ansidecl.h"
1587 #ifdef HAVE_SYS_RESOURCE_H
1588 #include <sys/resource.h>
1592 gcc_AC_CHECK_DECLS(mallinfo mallinfo2, , ,[
1593 #include "ansidecl.h"
1595 #ifdef HAVE_MALLOC_H
1600 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1601 #include "ansidecl.h"
1603 #ifdef HAVE_SYS_RESOURCE_H
1604 #include <sys/resource.h>
1606 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1607 [Define to `long' if <sys/resource.h> doesn't define.])])
1609 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1610 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1611 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1612 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1613 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1614 #include "ansidecl.h"
1623 gcc_AC_CHECK_DECLS(times, , ,[
1624 #include "ansidecl.h"
1626 #ifdef HAVE_SYS_TIMES_H
1627 #include <sys/times.h>
1631 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1632 #include "ansidecl.h"
1637 # More time-related stuff.
1638 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1639 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1640 #include "ansidecl.h"
1642 #ifdef HAVE_SYS_TIMES_H
1643 #include <sys/times.h>
1645 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1646 if test $ac_cv_struct_tms = yes; then
1647 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1648 [Define if <sys/times.h> defines struct tms.])
1651 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1652 # revisit after autoconf 2.50.
1653 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1654 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1655 #include "ansidecl.h"
1657 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1658 if test $gcc_cv_type_clock_t = yes; then
1659 AC_DEFINE(HAVE_CLOCK_T, 1,
1660 [Define if <time.h> defines clock_t.])
1663 # Check if F_SETLKW is supported by fcntl.
1664 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1665 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1666 #include <fcntl.h>]], [[
1672 return fcntl (1, F_SETLKW, &fl);]])],
1673 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1674 if test $ac_cv_f_setlkw = yes; then
1675 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1676 [Define if F_SETLKW supported by fcntl.])
1679 # Check if O_CLOEXEC is defined by fcntl
1680 AC_CACHE_CHECK(for O_CLOEXEC, ac_cv_o_cloexec, [
1681 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1682 #include <fcntl.h>]], [[
1683 return open ("/dev/null", O_RDONLY | O_CLOEXEC);]])],
1684 [ac_cv_o_cloexec=yes],[ac_cv_o_cloexec=no])])
1685 if test $ac_cv_o_cloexec = yes; then
1686 AC_DEFINE(HOST_HAS_O_CLOEXEC, 1,
1687 [Define if O_CLOEXEC supported by fcntl.])
1690 # C++ Modules would like some networking features to provide the mapping
1691 # server. You can still use modules without them though.
1692 # The following network-related checks could probably do with some
1693 # Windows and other non-linux defenses and checking.
1695 # Local socket connectivity wants AF_UNIX networking
1696 # Check for AF_UNIX networking
1697 AC_CACHE_CHECK(for AF_UNIX, ac_cv_af_unix, [
1698 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1699 #include <sys/types.h>
1700 #include <sys/socket.h>
1702 #include <netinet/in.h>]],[[
1704 un.sun_family = AF_UNSPEC;
1705 int fd = socket (AF_UNIX, SOCK_STREAM, 0);
1706 connect (fd, (sockaddr *)&un, sizeof (un));]])],
1707 [ac_cv_af_unix=yes],
1708 [ac_cv_af_unix=no])])
1709 if test $ac_cv_af_unix = yes; then
1710 AC_DEFINE(HAVE_AF_UNIX, 1,
1711 [Define if AF_UNIX supported.])
1714 # Remote socket connectivity wants AF_INET6 networking
1715 # Check for AF_INET6 networking
1716 AC_CACHE_CHECK(for AF_INET6, ac_cv_af_inet6, [
1717 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1718 #include <sys/types.h>
1719 #include <sys/socket.h>
1720 #include <netinet/in.h>
1721 #include <netdb.h>]],[[
1723 in6.sin6_family = AF_UNSPEC;
1724 struct addrinfo *addrs = 0;
1725 struct addrinfo hints;
1727 hints.ai_family = AF_INET6;
1728 hints.ai_socktype = SOCK_STREAM;
1729 hints.ai_protocol = 0;
1730 hints.ai_canonname = 0;
1733 int e = getaddrinfo ("localhost", 0, &hints, &addrs);
1734 const char *str = gai_strerror (e);
1735 freeaddrinfo (addrs);
1736 int fd = socket (AF_INET6, SOCK_STREAM, 0);
1737 connect (fd, (sockaddr *)&in6, sizeof (in6));]])],
1738 [ac_cv_af_inet6=yes],
1739 [ac_cv_af_inet6=no])])
1740 if test $ac_cv_af_inet6 = yes; then
1741 AC_DEFINE(HAVE_AF_INET6, 1,
1742 [Define if AF_INET6 supported.])
1745 # Check if _LK_LOCK is supported by _locking
1746 AC_CACHE_CHECK(for _LK_LOCK, ac_cv_lk_lock, [
1747 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1749 #include <sys/locking.h>]], [[
1751 return _locking (fd, _LK_LOCK, 0);]])],
1752 [ac_cv_lk_lock=yes],[ac_cv_lk_lock=no])])
1753 if test $ac_cv_lk_lock = yes; then
1754 AC_DEFINE(HOST_HAS_LK_LOCK, 1,
1755 [Define if _LK_LOC supported by _locking.])
1758 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1759 CFLAGS="$saved_CFLAGS"
1760 CXXFLAGS="$saved_CXXFLAGS"
1762 # mkdir takes a single argument on some systems.
1763 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1771 # With Setjmp/Longjmp based exception handling.
1772 AC_ARG_ENABLE(sjlj-exceptions,
1773 [AS_HELP_STRING([--enable-sjlj-exceptions],
1774 [arrange to use setjmp/longjmp exception handling])],
1777 if test $enableval != yes; then
1778 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1783 force_sjlj_exceptions=yes],
1786 force_sjlj_exceptions=yes
1790 force_sjlj_exceptions=yes
1794 force_sjlj_exceptions=no
1797 if test $force_sjlj_exceptions = yes; then
1798 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1799 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1800 [Define 0/1 to force the choice for exception handling model.])
1803 # --------------------------------------------------------
1804 # Build, host, and target specific configuration fragments
1805 # --------------------------------------------------------
1807 # Collect build-machine-specific information.
1808 . ${srcdir}/config.build || exit 1
1810 # Collect host-machine-specific information.
1811 . ${srcdir}/config.host || exit 1
1815 # Collect target-machine-specific information.
1816 . ${srcdir}/config.gcc || exit 1
1818 extra_objs="${host_extra_objs} ${extra_objs}"
1819 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1821 # Default the target-machine variables that were not explicitly set.
1822 if test x"$tm_file" = x
1823 then tm_file=$cpu_type/$cpu_type.h; fi
1825 if test x"$extra_headers" = x
1826 then extra_headers=; fi
1828 if test x$md_file = x
1829 then md_file=$cpu_type/$cpu_type.md; fi
1831 if test x$out_file = x
1832 then out_file=$cpu_type/$cpu_type.c; fi
1834 if test x"$tmake_file" = x
1835 then tmake_file=$cpu_type/t-$cpu_type
1838 # Support --enable-initfini-array.
1839 if test x$enable_initfini_array != xno; then
1840 tm_file="${tm_file} initfini-array.h"
1843 if test x"$dwarf2" = xyes
1844 then tm_file="$tm_file tm-dwarf2.h"
1847 # Say what files are being used for the output code and MD file.
1848 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1849 echo "Using \`$srcdir/config/$md_file' as machine description file."
1851 # If any of the xm_file variables contain nonexistent files, warn
1852 # about them and drop them.
1855 for x in $build_xm_file; do
1856 if test -f $srcdir/config/$x
1858 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1864 for x in $host_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 $xm_file; do
1874 if test -f $srcdir/config/$x
1876 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1882 for f in $tm_file; do
1885 if test $count = ax; then
1886 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1888 echo "Using the following target machine macro files:"
1889 for f in $tm_file; do
1890 echo " $srcdir/config/$f"
1894 if test x$use_long_long_for_widest_fast_int = xyes; then
1895 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1896 [Define to 1 if the 'long long' type is wider than 'long' but still
1897 efficiently supported by the host hardware.])
1900 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1901 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1903 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1904 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1907 for f in $host_xm_file; do
1910 if test $count = a; then
1912 elif test $count = ax; then
1913 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1915 echo "Using the following host machine macro files:"
1916 for f in $host_xm_file; do
1917 echo " $srcdir/config/$f"
1920 echo "Using ${out_host_hook_obj} for host machine hooks."
1922 if test "$host_xm_file" != "$build_xm_file"; then
1924 for f in $build_xm_file; do
1927 if test $count = a; then
1929 elif test $count = ax; then
1930 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1932 echo "Using the following build machine macro files:"
1933 for f in $build_xm_file; do
1934 echo " $srcdir/config/$f"
1939 if test -n "$configured_native_system_header_dir"; then
1940 native_system_header_dir=$configured_native_system_header_dir
1942 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1943 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1947 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1948 gcc_cv_mcontext_underscores,
1949 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1950 #include <sys/cdefs.h>
1951 #include <sys/signal.h>
1952 #include <ucontext.h>
1953 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1955 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1956 if test $gcc_cv_mcontext_underscores = yes; then
1957 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1958 [mcontext_t fields start with __])
1967 # Check if a valid thread package
1968 case ${enable_threads} in
1971 target_thread_file='single'
1975 target_thread_file='single'
1977 aix | dce | lynx | mipssde | posix | rtems | \
1978 single | tpf | vxworks | win32)
1979 target_thread_file=${enable_threads}
1982 echo "${enable_threads} is an unknown thread package" 1>&2
1987 if test x${thread_file} = x; then
1988 # No thread file set by target-specific clauses in config.gcc,
1989 # so use file chosen by default logic above
1990 thread_file=${target_thread_file}
1998 if test x$enable___cxa_atexit = xyes || \
1999 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
2000 if test x$host = x$target; then
2002 # mingw32 doesn't have __cxa_atexit but uses atexit registration
2003 # keyed to flag_use_cxa_atexit
2011 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
2012 [echo "__cxa_atexit can't be enabled on this target"])
2016 # We can't check for __cxa_atexit when building a cross, so assume
2020 if test x$use_cxa_atexit = xyes; then
2021 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
2022 [Define if you want to use __cxa_atexit, rather than atexit, to
2023 register C++ destructors for local statics and global objects.
2024 This is essential for fully standards-compliant handling of
2025 destructors, but requires __cxa_atexit in libc.])
2029 # Look for a file containing extra machine modes.
2030 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
2031 extra_modes_file='$(srcdir)'/config/${extra_modes}
2032 AC_SUBST(extra_modes_file)
2033 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
2034 [Define to the name of a file containing a list of extra machine modes
2035 for this architecture.])
2038 # Convert extra_options into a form suitable for Makefile use.
2041 for f in $extra_options; do
2042 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
2043 all_opt_files="$all_opt_files $srcdir/config/$f"
2045 AC_SUBST(extra_opt_files)
2047 # auto-host.h is the file containing items generated by autoconf and is
2048 # the first file included by config.h.
2049 # If host=build, it is correct to have bconfig include auto-host.h
2050 # as well. If host!=build, we are in error and need to do more
2051 # work to find out the build config parameters.
2052 if test x$host = x$build
2054 build_auto=auto-host.h
2055 HAVE_AUTO_BUILD='# '
2057 # We create a subdir, then run autoconf in the subdir.
2058 # To prevent recursion we set host and build for the new
2059 # invocation of configure to the build for this invocation
2066 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
2067 *) realsrcdir=../${srcdir};;
2069 # Clearing GMPINC is necessary to prevent host headers being
2070 # used by the build compiler. Defining GENERATOR_FILE stops
2071 # system.h from including gmp.h.
2072 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
2073 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
2074 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
2075 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
2076 ${realsrcdir}/configure \
2077 --enable-languages=${enable_languages-all} \
2078 ${enable_obsolete+--enable-obsolete="$enable_obsolete"} \
2079 ${enable_option_checking+--enable-option-checking="$enable_option_checking"} \
2080 --target=$target_alias --host=$build_alias \
2081 --build=$build_alias || exit # retaining $tempdir
2083 # We just finished tests for the build machine, so rename
2084 # the file auto-build.h in the gcc directory.
2085 mv auto-host.h ../auto-build.h
2088 build_auto=auto-build.h
2091 AC_SUBST(build_subdir)
2092 AC_SUBST(HAVE_AUTO_BUILD)
2094 tm_file="${tm_file} defaults.h"
2095 tm_p_file="${tm_p_file} tm-preds.h"
2096 tm_d_file="${tm_d_file} defaults.h"
2097 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
2098 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
2099 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
2100 # put this back in temporarily.
2101 xm_file="auto-host.h ansidecl.h ${xm_file}"
2108 # Compile in configure arguments.
2109 if test -f configargs.h ; then
2110 # Being re-configured.
2111 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
2112 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
2113 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
2114 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
2117 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
2120 # Double all backslashes and backslash all quotes to turn
2121 # gcc_config_arguments into a C string.
2122 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
2123 $gcc_config_arguments
2125 gcc_config_arguments_str=`cat conftest.out`
2128 cat > configargs.h <<EOF
2129 /* Generated automatically. */
2130 static const char configuration_arguments[] = "$gcc_config_arguments_str";
2131 static const char thread_model[] = "$thread_file";
2133 static const struct {
2134 const char *name, *value;
2135 } configure_default_options[] = $configure_default_options;
2140 gcc_BASEVER=`cat $srcdir/BASE-VER`
2141 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
2142 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
2143 if test -f $srcdir/REVISION ; then
2144 gcc_REVISION=`cat $srcdir/REVISION`
2148 cat > plugin-version.h <<EOF
2149 #include "configargs.h"
2151 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
2152 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
2153 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
2154 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
2156 static char basever[] = "$gcc_BASEVER";
2157 static char datestamp[] = "$gcc_DATESTAMP";
2158 static char devphase[] = "$gcc_DEVPHASE";
2159 static char revision[] = "$gcc_REVISION";
2161 /* FIXME plugins: We should make the version information more precise.
2162 One way to do is to add a checksum. */
2164 static struct plugin_gcc_version gcc_version = {basever, datestamp,
2166 configuration_arguments};
2170 # Determine what GCC version number to use in filesystem paths.
2173 # Internationalization
2174 ZW_GNU_GETTEXT_SISTER_DIR
2176 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
2177 # -liconv on the link line twice.
2178 case "$LIBINTL" in *$LIBICONV*)
2182 AC_ARG_ENABLE(secureplt,
2183 [AS_HELP_STRING([--enable-secureplt],
2184 [enable -msecure-plt by default for PowerPC])],
2187 AC_ARG_ENABLE(mingw-wildcard,
2188 [AS_HELP_STRING([--enable-mingw-wildcard],
2189 [Set whether to expand wildcard on command-line.
2190 Default to platform configuration])],
2191 [],[enable_mingw_wildcard=platform])
2192 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
2193 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
2194 $(test x"$enable_mingw_wildcard" = xno; echo $?),
2195 [Value to set mingw's _dowildcard to.])])
2197 AC_ARG_ENABLE(large-address-aware,
2198 [AS_HELP_STRING([--enable-large-address-aware],
2199 [Link mingw executables with --large-address-aware])])
2200 AS_IF([test x"$enable_large_address_aware" = xyes],
2201 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
2202 [Define if we should link mingw executables with --large-address-aware])])
2204 AC_ARG_ENABLE(leading-mingw64-underscores,
2205 AS_HELP_STRING([--enable-leading-mingw64-underscores],
2206 [enable leading underscores on 64 bit mingw targets]),
2208 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
2209 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
2210 [Define if we should use leading underscore on 64 bit mingw targets])])
2213 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
2216 AC_ARG_ENABLE(frame-pointer,
2217 [AS_HELP_STRING([--enable-frame-pointer],
2218 [enable -fno-omit-frame-pointer by default for x86])], [],
2221 linux* | gnu* | darwin[[8912]]* | cygwin* | mingw*)
2222 # Enable -fomit-frame-pointer by default for these systems with DWARF2.
2223 enable_frame_pointer=no
2226 enable_frame_pointer=yes
2232 i[[34567]]86-*-* | x86_64-*-*)
2233 if test "x$enable_cld" = xyes; then
2234 tm_defines="${tm_defines} USE_IX86_CLD=1"
2236 if test "x$enable_frame_pointer" = xyes; then
2237 tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1"
2242 # Windows32 Registry support for specifying GCC installation paths.
2243 AC_ARG_ENABLE(win32-registry,
2244 [AS_HELP_STRING([--disable-win32-registry],
2245 [disable lookup of installation paths in the
2246 Registry on Windows hosts])
2247 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
2248 AS_HELP_STRING([--enable-win32-registry=KEY],
2249 [use KEY instead of GCC version as the last portion
2250 of the registry key])],,)
2253 win32 | pe | cygwin* | mingw32*)
2254 if test "x$enable_win32_registry" != xno; then
2255 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
2258 if test "x$enable_win32_registry" != xno; then
2259 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
2260 [Define to 1 if installation paths should be looked up in the Windows
2261 Registry. Ignored on non-Windows hosts.])
2263 if test "x$enable_win32_registry" != xyes \
2264 && test "x$enable_win32_registry" != x; then
2265 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
2266 [Define to be the last component of the Windows registry key under which
2267 to look for installation paths. The full key used will be
2268 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
2269 The default is the GCC version number.])
2275 # Get an absolute path to the GCC top-level source directory
2276 holddir=`${PWDCMD-pwd}`
2278 topdir=`${PWDCMD-pwd}`
2281 # Conditionalize the makefile for this host machine.
2283 for f in ${host_xmake_file}
2285 if test -f ${srcdir}/config/$f
2287 xmake_file="${xmake_file} \$(srcdir)/config/$f"
2291 # Conditionalize the makefile for this target machine.
2293 for f in ${tmake_file}
2295 if test -f ${srcdir}/config/$f
2297 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
2300 tmake_file="${tmake_file_}${omp_device_property_tmake_file}"
2302 out_object_file=`basename $out_file .c`.o
2303 common_out_object_file=`basename $common_out_file .c`.o
2305 tm_file_list="options.h"
2306 tm_include_list="options.h insn-constants.h"
2307 for f in $tm_file; do
2310 f=`echo $f | sed 's/^..//'`
2311 tm_file_list="${tm_file_list} $f"
2312 tm_include_list="${tm_include_list} $f"
2315 tm_file_list="${tm_file_list} \$(srcdir)/$f"
2316 tm_include_list="${tm_include_list} $f"
2319 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
2320 tm_include_list="${tm_include_list} config/$f"
2327 for f in $tm_p_file; do
2330 tm_p_file_list="${tm_p_file_list} $f"
2331 tm_p_include_list="${tm_p_include_list} $f"
2334 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
2335 tm_p_include_list="${tm_p_include_list} config/$f"
2340 tm_d_include_list="options.h insn-constants.h"
2341 for f in $tm_d_file; do
2344 tm_d_file_list="${tm_d_file_list} \$(srcdir)/$f"
2345 tm_d_include_list="${tm_d_include_list} $f"
2348 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
2349 tm_d_include_list="${tm_d_include_list} config/$f"
2356 for f in $xm_file; do
2359 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2360 xm_include_list="${xm_include_list} $f"
2363 xm_file_list="${xm_file_list} $f"
2364 xm_include_list="${xm_include_list} $f"
2367 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2368 xm_include_list="${xm_include_list} config/$f"
2374 host_xm_include_list=
2375 for f in $host_xm_file; do
2378 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2379 host_xm_include_list="${host_xm_include_list} $f"
2382 host_xm_file_list="${host_xm_file_list} $f"
2383 host_xm_include_list="${host_xm_include_list} $f"
2386 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2387 host_xm_include_list="${host_xm_include_list} config/$f"
2393 for f in $build_xm_file; do
2396 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2397 build_xm_include_list="${build_xm_include_list} $f"
2399 auto-build.h | auto-host.h )
2400 build_xm_file_list="${build_xm_file_list} $f"
2401 build_xm_include_list="${build_xm_include_list} $f"
2404 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2405 build_xm_include_list="${build_xm_include_list} config/$f"
2410 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2411 # cross-compiler which does not use the native headers and libraries.
2412 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2413 CROSS= AC_SUBST(CROSS)
2414 ALL=all.internal AC_SUBST(ALL)
2415 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2416 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2418 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2419 test x$build != x$host || test "x$with_build_sysroot" != x; then
2420 if test "x$with_build_sysroot" != x; then
2421 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2423 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2426 if test x$host != x$target
2428 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2430 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2431 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2432 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2435 if test "x$with_build_sysroot" != "x"; then
2436 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2437 elif test "x$with_sysroot" = x; then
2438 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2439 elif test "x$with_sysroot" = xyes; then
2440 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2442 target_header_dir="${with_sysroot}${native_system_header_dir}"
2445 target_header_dir=${native_system_header_dir}
2448 # If this is a cross-compiler that does not
2449 # have its own set of headers then define
2452 # If this is using newlib, without having the headers available now,
2453 # then define inhibit_libc in LIBGCC2_CFLAGS.
2454 # This prevents libgcc2 from containing any code which requires libc
2456 : ${inhibit_libc=false}
2457 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2458 test x$with_newlib = xyes ; } &&
2459 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2462 AC_SUBST(inhibit_libc)
2464 # When building gcc with a cross-compiler, we need to adjust things so
2465 # that the generator programs are still built with the native compiler.
2466 # Also, we cannot run fixincludes.
2468 # These are the normal (build=host) settings:
2469 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2470 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2471 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2472 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2473 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2474 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2476 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2477 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2479 # And these apply if build != host, or we are generating coverage data
2480 if test x$build != x$host || test "x$coverage_flags" != x
2482 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CFLAGS_FOR_BUILD)'
2483 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CXXFLAGS_FOR_BUILD)'
2484 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2486 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2487 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2488 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2489 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2491 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2492 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2494 # Expand extra_headers to include complete path.
2495 # This substitutes for lots of t-* files.
2497 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2498 for file in ${extra_headers} ; do
2499 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2502 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2503 if test x"$use_gcc_tgmath" = xyes
2504 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2507 # Define collect2 in Makefile.
2508 case $host_can_use_collect2 in
2510 *) collect2='collect2$(exeext)' ;;
2512 AC_SUBST([collect2])
2514 # Add a definition of USE_COLLECT2 if system wants one.
2515 case $use_collect2 in
2516 no) use_collect2= ;;
2519 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2520 xm_defines="${xm_defines} USE_COLLECT2"
2521 case $host_can_use_collect2 in
2523 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2529 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2530 [Define to the name of the LTO plugin DSO that must be
2531 passed to the linker's -plugin=LIB option.])
2533 # ---------------------------
2534 # Assembler & linker features
2535 # ---------------------------
2537 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2538 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2539 # However when ld-new is first executed from the build tree, libtool will
2540 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2541 # to the build tree. While doing this we need to use the previous-stage
2542 # linker, or we have an infinite loop. The presence of a shell script as
2543 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2544 # the gcc/collect-ld script. So we need to know how libtool works, or
2545 # exec-tool will fail.
2547 m4_defun([_LT_CONFIG_COMMANDS], [])
2550 AC_SUBST(enable_fast_install)
2552 # Identify the assembler which will work hand-in-glove with the newly
2553 # built GCC, so that we can examine its features. This is the assembler
2554 # which will be driven by the driver program.
2556 # If build != host, and we aren't building gas in-tree, we identify a
2557 # build->target assembler and hope that it will have the same features
2558 # as the host->target assembler we'll be using.
2559 gcc_cv_gas_major_version=
2560 gcc_cv_gas_minor_version=
2561 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2563 m4_pattern_allow([AS_FOR_TARGET])dnl
2564 AS_VAR_SET_IF(gcc_cv_as,, [
2565 if test -x "$DEFAULT_ASSEMBLER"; then
2566 gcc_cv_as="$DEFAULT_ASSEMBLER"
2567 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2568 && test -f ../gas/Makefile \
2569 && test x$build = x$host; then
2570 gcc_cv_as=../gas/as-new$build_exeext
2571 elif test -x as$build_exeext; then
2572 # Build using assembler in the current directory.
2573 gcc_cv_as=./as$build_exeext
2574 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2575 gcc_cv_as="$AS_FOR_TARGET"
2577 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2580 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2581 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2582 case "$ORIGINAL_AS_FOR_TARGET" in
2583 ./as | ./as$build_exeext) ;;
2584 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2587 AC_MSG_CHECKING(what assembler to use)
2588 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2589 # Single tree build which includes gas. We want to prefer it
2590 # over whatever linker top-level may have detected, since
2591 # we'll use what we're building after installation anyway.
2592 AC_MSG_RESULT(newly built gas)
2594 _gcc_COMPUTE_GAS_VERSION
2595 in_tree_gas_is_elf=no
2596 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2597 || (grep 'obj_format = multi' ../gas/Makefile \
2598 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2600 in_tree_gas_is_elf=yes
2603 AC_MSG_RESULT($gcc_cv_as)
2609 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2610 [case "${enableval}" in
2616 install_gold_as_default=no
2618 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2619 [case "${enableval}" in
2621 install_gold_as_default=yes
2624 if test x${default_ld} != x; then
2625 install_gold_as_default=yes
2631 AC_MSG_ERROR([invalid --enable-gold argument])
2635 # Identify the linker which will work hand-in-glove with the newly
2636 # built GCC, so that we can examine its features. This is the linker
2637 # which will be driven by the driver program.
2639 # If build != host, and we aren't building gas in-tree, we identify a
2640 # build->target linker and hope that it will have the same features
2641 # as the host->target linker we'll be using.
2642 gcc_cv_gld_major_version=
2643 gcc_cv_gld_minor_version=
2644 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2645 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2646 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2648 AS_VAR_SET_IF(gcc_cv_ld,, [
2649 if test -x "$DEFAULT_LINKER"; then
2650 gcc_cv_ld="$DEFAULT_LINKER"
2651 elif test $install_gold_as_default = yes \
2652 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2653 && test -f ../gold/Makefile \
2654 && test x$build = x$host; then
2655 gcc_cv_ld=../gold/ld-new$build_exeext
2656 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2657 && test -f ../ld/Makefile \
2658 && test x$build = x$host; then
2659 gcc_cv_ld=../ld/ld-new$build_exeext
2660 elif test -x collect-ld$build_exeext; then
2661 # Build using linker in the current directory.
2662 gcc_cv_ld=./collect-ld$build_exeext
2663 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2664 gcc_cv_ld="$LD_FOR_TARGET"
2666 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2669 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2670 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2671 # if the PLUGIN_LD is set ld-new, just have it as ld
2672 # as that is the installed named.
2673 if test x$PLUGIN_LD_SUFFIX = xld-new \
2674 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2677 AC_ARG_WITH(plugin-ld,
2678 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2679 [if test x"$withval" != x; then
2680 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2681 PLUGIN_LD_SUFFIX="$withval"
2683 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2684 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2686 # Check to see if we are using gold instead of ld
2687 AC_MSG_CHECKING(whether we are using gold)
2689 if test x$gcc_cv_ld != x; then
2690 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2691 | grep "GNU gold" > /dev/null; then
2695 AC_MSG_RESULT($ld_is_gold)
2697 AC_MSG_CHECKING(gold linker with split stack support as non default)
2698 # Check to see if default ld is not gold, but gold is
2699 # available and has support for split stack. If gcc was configured
2700 # with gold then no checking is done.
2702 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2704 # For platforms other than powerpc64*, enable as appropriate.
2707 ld_gold=`which ${gcc_cv_ld}.gold`
2708 # Make sure this gold has minimal split stack support
2709 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2710 ld_vers=`$ld_gold --version | sed 1q`
2711 gold_vers=`echo $ld_vers | sed -n \
2712 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2714 # check that the gold version contains the complete split stack support
2715 # on powerpc64 big and little endian
2717 case "$gold_vers" in
2718 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2720 *) gold_non_default=no
2726 if test $gold_non_default = yes; then
2727 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2728 [Define if the gold linker supports split stack and is available as a non-default])
2731 AC_MSG_RESULT($gold_non_default)
2733 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2734 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2735 case "$ORIGINAL_LD_FOR_TARGET" in
2736 ./collect-ld | ./collect-ld$build_exeext) ;;
2737 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2740 AC_MSG_CHECKING(what linker to use)
2741 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2742 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2743 # Single tree build which includes ld. We want to prefer it
2744 # over whatever linker top-level may have detected, since
2745 # we'll use what we're building after installation anyway.
2746 AC_MSG_RESULT(newly built ld)
2748 in_tree_ld_is_elf=no
2749 if (grep 'EMUL = .*elf' ../ld/Makefile \
2750 || grep 'EMUL = .*linux' ../ld/Makefile \
2751 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2752 in_tree_ld_is_elf=yes
2753 elif test "$ld_is_gold" = yes; then
2754 in_tree_ld_is_elf=yes
2756 for f in $gcc_cv_ld_bfd_srcdir/configure $gcc_cv_ld_gld_srcdir/configure $gcc_cv_ld_gld_srcdir/configure.ac $gcc_cv_ld_gld_srcdir/Makefile.in
2759 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2760 if test x$gcc_cv_gld_version != x; then
2764 case $gcc_cv_gld_version in
2767 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2770 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2771 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2773 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2774 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2776 AC_MSG_RESULT($gcc_cv_ld)
2778 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2779 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2780 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2783 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2784 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2786 # Figure out what nm we will be using.
2787 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2788 AS_VAR_SET_IF(gcc_cv_nm,, [
2789 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2790 && test -f ../binutils/Makefile \
2791 && test x$build = x$host; then
2792 gcc_cv_nm=../binutils/nm-new$build_exeext
2793 elif test -x nm$build_exeext; then
2794 gcc_cv_nm=./nm$build_exeext
2795 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2796 gcc_cv_nm="$NM_FOR_TARGET"
2798 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2801 AC_MSG_CHECKING(what nm to use)
2802 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2803 # Single tree build which includes binutils.
2804 AC_MSG_RESULT(newly built nm)
2807 AC_MSG_RESULT($gcc_cv_nm)
2811 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2812 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2813 case "$ORIGINAL_NM_FOR_TARGET" in
2814 ./nm | ./nm$build_exeext) ;;
2815 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2819 # Figure out what objdump we will be using.
2820 AS_VAR_SET_IF(gcc_cv_objdump,, [
2821 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2822 && test -f ../binutils/Makefile \
2823 && test x$build = x$host; then
2824 # Single tree build which includes binutils.
2825 gcc_cv_objdump=../binutils/objdump$build_exeext
2826 elif test -x objdump$build_exeext; then
2827 gcc_cv_objdump=./objdump$build_exeext
2828 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2829 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2831 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2834 AC_MSG_CHECKING(what objdump to use)
2835 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2836 # Single tree build which includes binutils.
2837 AC_MSG_RESULT(newly built objdump)
2838 elif test x$gcc_cv_objdump = x; then
2839 AC_MSG_RESULT(not found)
2841 AC_MSG_RESULT($gcc_cv_objdump)
2844 # Figure out what readelf we will be using.
2845 AS_VAR_SET_IF(gcc_cv_readelf,, [
2846 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2847 && test -f ../binutils/Makefile \
2848 && test x$build = x$host; then
2849 # Single tree build which includes binutils.
2850 gcc_cv_readelf=../binutils/readelf$build_exeext
2851 elif test -x readelf$build_exeext; then
2852 gcc_cv_readelf=./readelf$build_exeext
2853 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2854 gcc_cv_readelf="$READELF_FOR_TARGET"
2856 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2859 AC_MSG_CHECKING(what readelf to use)
2860 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2861 # Single tree build which includes binutils.
2862 AC_MSG_RESULT(newly built readelf)
2863 elif test x$gcc_cv_readelf = x; then
2864 AC_MSG_RESULT(not found)
2866 AC_MSG_RESULT($gcc_cv_readelf)
2869 # Figure out what otool we will be using.
2870 AS_VAR_SET_IF(gcc_cv_otool,, [
2871 if test -x otool$build_exeext; then
2872 gcc_cv_otool=./otool$build_exeext
2873 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2874 gcc_cv_otool="$OTOOL_FOR_TARGET"
2876 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2879 AC_MSG_CHECKING(what otool to use)
2880 if test x$gcc_cv_otool = x; then
2881 AC_MSG_RESULT(not found)
2883 AC_MSG_RESULT($gcc_cv_otool)
2886 # Figure out the dsymutil we will use.
2887 AS_VAR_SET_IF(gcc_cv_dsymutil,, [
2888 if test -x "$DEFAULT_DSYMUTIL"; then
2889 gcc_cv_dsymutil="$DEFAULT_DSYMUTIL"
2890 elif test -x dsymutil$build_exeext; then
2891 gcc_cv_dsymutil=./dsymutil$build_exeext
2892 elif ( set dummy $DSYMUTIL_FOR_TARGET; test -x $[2] ); then
2893 gcc_cv_dsymutil=$DSYMUTIL_FOR_TARGET
2894 elif ( set dummy $DSYMUTIL; test -x $[2] ); then
2895 gcc_cv_dsymutil=$DSYMUTIL
2897 AC_PATH_PROG(gcc_cv_dsymutil, $DSYMUTIL_FOR_TARGET)
2900 ORIGINAL_DSYMUTIL_FOR_TARGET=$gcc_cv_dsymutil
2901 AC_SUBST(ORIGINAL_DSYMUTIL_FOR_TARGET)
2902 case "$ORIGINAL_DSYMUTIL_FOR_TARGET" in
2903 ./dsymutil | ./dsymutil$build_exeext) ;;
2904 *) AC_CONFIG_FILES(dsymutil:exec-tool.in, [chmod +x dsymutil]) ;;
2907 # Figure out what assembler alignment features are present.
2908 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2912 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2913 [Define if your assembler supports .balign and .p2align.])])
2915 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2918 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2919 [Define if your assembler supports specifying the maximum number
2920 of bytes to skip when using the GAS .p2align command.])])
2922 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2925 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2926 [Define if your assembler supports .literal16.])])
2928 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2930 [conftest_label1: .word 0
2932 conftest_label2: .word 0
2934 [if test x$gcc_cv_nm != x; then
2935 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2936 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2937 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2939 else gcc_cv_as_subsection_m1=yes
2941 rm -f conftest.nm1 conftest.nm2
2943 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2944 [Define if your assembler supports .subsection and .subsection -1 starts
2945 emitting at the beginning of your section.])])
2947 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2950 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2952 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2954 [ .weakref foobar, barfnot],,
2955 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2957 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2960 .NSUBSPA $CODE$,COMDAT],,
2961 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2963 # .hidden needs to be supported in both the assembler and the linker,
2964 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2965 # This is irritatingly difficult to feature test for; we have to check the
2966 # date string after the version number. If we've got an in-tree
2967 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2969 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2972 conftest_s=' .globl foobar,hidden'
2975 conftest_s=' .hidden foobar
2979 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2980 [elf,2,13,0],, [$conftest_s])
2983 # Darwin as has some visibility support, though with a different syntax.
2984 gcc_cv_as_hidden=yes
2988 # gnu_indirect_function type is an extension proposed at
2989 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2990 # selection of function implementation
2991 AC_ARG_ENABLE(gnu-indirect-function,
2992 [AS_HELP_STRING([--enable-gnu-indirect-function],
2993 [enable the use of the @gnu_indirect_function to glibc systems])],
2994 [case $enable_gnu_indirect_function in
2996 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2997 Valid choices are 'yes' and 'no'.]) ;;
2999 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
3003 AC_MSG_CHECKING(linker ifunc IRELATIVE support)
3004 cat > conftest.s <<EOF
3006 .type foo_resolver, @function
3009 .size foo_resolver, .-foo_resolver
3012 .type foo, %gnu_indirect_function
3013 .set foo, foo_resolver
3016 .type bar, @function
3022 if test x$gcc_cv_as != x \
3023 && test x$gcc_cv_ld != x \
3024 && test x$gcc_cv_readelf != x \
3025 && $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
3026 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1 \
3027 && $gcc_cv_readelf --relocs --wide conftest \
3028 | grep R_RISCV_IRELATIVE > /dev/null 2>&1; then
3029 enable_gnu_indirect_function=yes
3031 rm -f conftest conftest.o conftest.s
3032 AC_MSG_RESULT($enable_gnu_indirect_function)
3036 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
3037 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
3038 [Define if your system supports gnu indirect functions.])
3042 if test $in_tree_ld != yes ; then
3043 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
3044 if echo "$ld_ver" | grep GNU > /dev/null; then
3045 if test x"$ld_is_gold" = xyes; then
3046 # GNU gold --version looks like this:
3048 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
3050 # We extract the binutils version which is more familiar and specific
3051 # than the gold version.
3052 ld_vers=`echo $ld_ver | sed -n \
3053 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3055 # GNU ld --version looks like this:
3057 # GNU ld (GNU Binutils) 2.21.51.20110225
3058 ld_vers=`echo $ld_ver | sed -n \
3059 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3061 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)\(-*\)\([01][0-9]\)\2\([0-3][0-9]\).*$,\1\3\4,p'`
3062 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3063 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3064 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
3068 # Solaris 2 ld -V output looks like this for a regular version:
3070 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
3072 # but test versions add stuff at the end:
3074 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
3076 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
3077 # numbers can be used in ld.so.1 feature checks even if a different
3078 # linker is configured.
3079 ld_ver=`$gcc_cv_ld -V 2>&1`
3080 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
3081 ld_vers=`echo $ld_ver | sed -n \
3082 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
3083 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3084 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3092 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
3093 [[if test $in_tree_ld = yes ; then
3095 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
3096 && test $in_tree_ld_is_elf = yes; then
3097 gcc_cv_ld_hidden=yes
3100 gcc_cv_ld_hidden=yes
3101 if test x"$ld_is_gold" = xyes; then
3103 elif echo "$ld_ver" | grep GNU > /dev/null; then
3104 if test 0"$ld_date" -lt 20020404; then
3105 if test -n "$ld_date"; then
3106 # If there was date string, but was earlier than 2002-04-04, fail
3108 elif test -z "$ld_vers"; then
3109 # If there was no date string nor ld version number, something is wrong
3112 test -z "$ld_vers_patch" && ld_vers_patch=0
3113 if test "$ld_vers_major" -lt 2; then
3115 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
3116 gcc_cv_ld_hidden="no"
3117 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
3125 gcc_cv_ld_hidden=yes
3128 # Darwin ld has some visibility support.
3129 gcc_cv_ld_hidden=yes
3131 hppa64*-*-hpux* | ia64*-*-hpux*)
3132 gcc_cv_ld_hidden=yes
3135 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
3136 # .symbolic was only added in Solaris 9 12/02.
3137 gcc_cv_ld_hidden=yes
3145 libgcc_visibility=no
3146 AC_SUBST(libgcc_visibility)
3147 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
3148 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
3149 libgcc_visibility=yes
3150 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
3151 [Define if your assembler and linker support .hidden.])
3154 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3155 gcc_cv_ld_ro_rw_mix=unknown
3156 if test $in_tree_ld = yes ; then
3157 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3158 && test $in_tree_ld_is_elf = yes; then
3159 gcc_cv_ld_ro_rw_mix=read-write
3161 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3162 echo '.section myfoosect, "a"' > conftest1.s
3163 echo '.section myfoosect, "aw"' > conftest2.s
3164 echo '.byte 1' >> conftest2.s
3165 echo '.section myfoosect, "a"' > conftest3.s
3166 echo '.byte 0' >> conftest3.s
3167 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3168 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3169 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3170 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3171 conftest2.o conftest3.o > /dev/null 2>&1; then
3172 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3173 | sed -e '/myfoosect/!d' -e N`
3174 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3175 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3176 gcc_cv_ld_ro_rw_mix=read-only
3178 gcc_cv_ld_ro_rw_mix=read-write
3183 rm -f conftest.* conftest[123].*
3186 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3187 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3188 [Define if your linker links a mix of read-only
3189 and read-write sections into a read-write section.])
3191 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3193 gcc_AC_INITFINI_ARRAY
3195 # Check if we have .[us]leb128, and support symbol arithmetic with it.
3196 # Older versions of GAS and some non-GNU assemblers, have a bugs handling
3197 # these directives, even when they appear to accept them.
3198 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
3206 .uleb128 0x8000000000000000
3209 if test "x$gcc_cv_objdump" != x; then
3210 if $gcc_cv_objdump -s conftest.o 2>/dev/null \
3211 | grep '04800a8e 78808080 80808080 808001' >/dev/null; then
3212 gcc_cv_as_leb128=yes
3214 elif test "x$gcc_cv_otool" != x; then
3215 if $gcc_cv_otool -d conftest.o 2>/dev/null \
3216 | grep '04 80 0a 8e 78 80 80 80 80 80 80 80 80 80 01' >/dev/null; then
3217 gcc_cv_as_leb128=yes
3220 # play safe, assume the assembler is broken.
3224 [AC_DEFINE(HAVE_AS_LEB128, 1,
3225 [Define if your assembler supports .sleb128 and .uleb128.])],
3226 [AC_DEFINE(HAVE_AS_LEB128, 0,
3227 [Define if your assembler supports .sleb128 and .uleb128.])])
3229 # Determine if an .eh_frame section is read-only.
3230 gcc_fn_eh_frame_ro () {
3231 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
3232 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
3233 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
3236 # Check if we have assembler support for unwind directives.
3237 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
3244 .cfi_escape 1, 2, 3, 4, 5
3248 # If the linker used on Solaris (like Sun ld) isn't capable of merging
3249 # read-only and read-write sections, we need to make sure that the
3250 # assembler used emits read-write .eh_frame sections.
3251 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
3252 gcc_cv_as_cfi_directive=yes
3253 elif test "x$gcc_cv_objdump" = x; then
3254 # No objdump, err on the side of caution.
3255 gcc_cv_as_cfi_directive=no
3257 if test x$gas = xyes; then
3265 sparc*-*-solaris2.*)
3266 # On Solaris/SPARC, .eh_frame sections should always be read-write.
3267 if gcc_fn_eh_frame_ro $as_32_opt \
3268 || gcc_fn_eh_frame_ro $as_64_opt; then
3269 gcc_cv_as_cfi_directive=no
3271 gcc_cv_as_cfi_directive=yes
3274 i?86-*-solaris2.* | x86_64-*-solaris2.*)
3275 # On Solaris/x86, make sure that GCC and assembler agree on using
3276 # read-only .eh_frame sections for 64-bit.
3277 if gcc_fn_eh_frame_ro $as_32_opt; then
3278 gcc_cv_as_cfi_directive=no
3279 elif gcc_fn_eh_frame_ro $as_64_opt; then
3280 gcc_cv_as_cfi_directive=yes
3282 gcc_cv_as_cfi_directive=no
3289 gcc_cv_as_cfi_directive=yes
3292 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
3293 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
3297 .cfi_adjust_cfa_offset 64
3299 .cfi_adjust_cfa_offset 128
3302 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
3303 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
3304 gcc_cv_as_cfi_advance_working=yes
3308 # no objdump, err on the side of caution
3309 gcc_cv_as_cfi_advance_working=no
3311 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
3312 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
3313 [`if test $gcc_cv_as_cfi_directive = yes \
3314 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
3315 [Define 0/1 if your assembler supports CFI directives.])
3317 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
3318 gcc_GAS_CHECK_FEATURE([cfi personality directive],
3319 gcc_cv_as_cfi_personality_directive, ,,
3322 .cfi_personality 0, symbol
3324 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
3325 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
3326 [Define 0/1 if your assembler supports .cfi_personality.])
3328 gcc_GAS_CHECK_FEATURE([cfi sections directive],
3329 gcc_cv_as_cfi_sections_directive, ,,
3331 .cfi_sections .debug_frame, .eh_frame
3335 win32 | pe | cygwin* | mingw32*)
3336 # Need to check that we generated the correct relocation for the
3337 # .debug_frame section. This was fixed for binutils 2.21.
3338 gcc_cv_as_cfi_sections_directive=no
3339 if test "x$gcc_cv_objdump" != x; then
3340 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
3341 grep secrel > /dev/null; then
3342 gcc_cv_as_cfi_sections_directive=yes
3347 gcc_cv_as_cfi_sections_directive=yes
3350 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
3351 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
3352 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
3353 [Define 0/1 if your assembler supports .cfi_sections.])
3355 # GAS versions up to and including 2.11.0 may mis-optimize
3357 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
3365 .section .eh_frame,"aw",@progbits
3367 .4byte .LECIE1-.LSCIE1
3381 .4byte .LEFDE1-.LASFDE1
3383 .4byte .LASFDE1-__FRAME_BEGIN__
3391 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
3392 cat > conftest.lit <<EOF
3393 0000 10000000 00000000 017a0001 781a0004 .........z..x...
3394 0010 01000000 12000000 18000000 00000000 ................
3395 0020 08000000 04080000 0044 .........D @&t@
3397 cat > conftest.big <<EOF
3398 0000 00000010 00000000 017a0001 781a0004 .........z..x...
3399 0010 00000001 00000012 00000018 00000000 ................
3400 0020 00000008 04000000 0844 .........D @&t@
3402 # If the assembler didn't choke, and we can objdump,
3403 # and we got the correct data, then succeed.
3404 # The text in the here-document typically retains its unix-style line
3405 # endings, while the output of objdump will use host line endings.
3406 # Therefore, use diff -b for the comparisons.
3407 if test x$gcc_cv_objdump != x \
3408 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3409 | tail -3 > conftest.got \
3410 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3411 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3413 gcc_cv_as_eh_frame=yes
3414 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3415 gcc_cv_as_eh_frame=buggy
3417 # Uh oh, what do we do now?
3418 gcc_cv_as_eh_frame=no
3421 if test $gcc_cv_as_eh_frame = buggy; then
3422 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3423 [Define if your assembler mis-optimizes .eh_frame data.])
3426 # Test if the assembler supports the section flag 'e' or #exclude for
3427 # specifying an excluded section.
3428 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3429 [2,22,51], [--fatal-warnings],
3432 if test $gcc_cv_as_section_exclude_e = no; then
3434 # Solaris as uses #exclude instead.
3438 conftest_s='.section "foo1", #exclude'
3440 i?86-*-solaris2* | x86_64-*-solaris2*)
3441 conftest_s='.section foo1, #exclude'
3446 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,,
3450 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3451 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3452 [Define if your assembler supports specifying the exclude section flag.])
3454 # Test if the assembler supports the section flag 'R' for specifying
3455 # section with SHF_GNU_RETAIN.
3457 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3458 # assembler supports the section flag 'R', it doesn't mean that
3459 # Solairs ld supports it.
3461 gcc_cv_as_shf_gnu_retain=no
3464 gcc_GAS_CHECK_FEATURE([section 'R' flag], gcc_cv_as_shf_gnu_retain,
3465 [elf,2,36,0], [--fatal-warnings],
3466 [.section .foo,"awR",%progbits
3470 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_GNU_RETAIN,
3471 [`if test $gcc_cv_as_shf_gnu_retain = yes; then echo 1; else echo 0; fi`],
3472 [Define 0/1 if your assembler supports marking sections with SHF_GNU_RETAIN flag.])
3474 # Test if the assembler supports the section flag 'o' for specifying
3475 # section with link-order.
3477 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3478 # assembler supports the section flag 'o', it doesn't mean that
3479 # Solairs ld supports it.
3481 gcc_cv_as_section_link_order=no
3484 gcc_GAS_CHECK_FEATURE([section 'o' flag], gcc_cv_as_section_link_order,
3485 [2,35,0], [--fatal-warnings],
3488 .section __patchable_function_entries,"awo",%progbits,.foo
3492 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_LINK_ORDER,
3493 [`if test $gcc_cv_as_section_link_order = yes; then echo 1; else echo 0; fi`],
3494 [Define 0/1 if your assembler supports 'o' flag in .section directive.])
3496 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3497 [elf,2,12,0], [--fatal-warnings],
3498 [.section .rodata.str, "aMS", @progbits, 1])
3499 if test $gcc_cv_as_shf_merge = no; then
3500 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3501 [elf,2,12,0], [--fatal-warnings],
3502 [.section .rodata.str, "aMS", %progbits, 1])
3504 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3505 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3506 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3508 gcc_cv_ld_aligned_shf_merge=yes
3510 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for
3512 sparc*-*-solaris2.11*)
3513 if test x"$gnu_ld" = xno \
3514 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then
3515 gcc_cv_ld_aligned_shf_merge=no
3519 AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE,
3520 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`],
3521 [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.])
3523 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
3524 [.stabs "gcc2_compiled.",60,0,0,0],,
3525 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
3526 [Define if your assembler supports .stabs.])])
3528 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3529 gcc_cv_as_comdat_group,
3530 [elf,2,16,0], [--fatal-warnings],
3531 [.section .text,"axG",@progbits,.foo,comdat])
3532 if test $gcc_cv_as_comdat_group = yes; then
3533 gcc_cv_as_comdat_group_percent=no
3534 gcc_cv_as_comdat_group_group=no
3536 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3537 gcc_cv_as_comdat_group_percent,
3538 [elf,2,16,0], [--fatal-warnings],
3539 [.section .text,"axG",%progbits,.foo,comdat])
3540 if test $gcc_cv_as_comdat_group_percent = yes; then
3541 gcc_cv_as_comdat_group_group=no
3544 # Sun as uses a completely different syntax.
3549 .group foo,".text%foo",#comdat
3550 .section ".text%foo", #alloc,#execinstr,#progbits
3555 i?86-*-solaris2* | x86_64-*-solaris2*)
3557 .group foo,.text%foo,#comdat
3558 .section .text%foo, "ax", @progbits
3564 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3565 gcc_cv_as_comdat_group_group,
3569 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3570 gcc_cv_as_comdat_group_group=no
3574 if test x"$ld_is_gold" = xyes; then
3576 elif test $in_tree_ld = yes ; then
3578 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3579 && test $in_tree_ld_is_elf = yes; then
3582 elif echo "$ld_ver" | grep GNU > /dev/null; then
3584 if test 0"$ld_date" -lt 20050308; then
3585 if test -n "$ld_date"; then
3586 # If there was date string, but was earlier than 2005-03-08, fail
3588 elif test "$ld_vers_major" -lt 2; then
3590 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3597 *-*-solaris2.1[1-9]*)
3599 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3600 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3603 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3604 # least ld version 1.2267.
3605 if test "$ld_vers_major" -gt 1; then
3607 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3609 elif test "$ld_vers_minor" -ge 2267; then
3614 # Assume linkers other than GNU ld don't support COMDAT group.
3620 # Allow overriding the automatic COMDAT group tests above.
3621 AC_ARG_ENABLE(comdat,
3622 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3623 [comdat_group="$enable_comdat"])
3624 if test $comdat_group = no; then
3625 gcc_cv_as_comdat_group=no
3626 gcc_cv_as_comdat_group_percent=no
3627 gcc_cv_as_comdat_group_group=no
3629 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3630 [`if test $gcc_cv_as_comdat_group = yes \
3631 || test $gcc_cv_as_comdat_group_percent = yes \
3632 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3633 [Define 0/1 if your assembler and linker support COMDAT groups.])
3635 # Restrict this test to Solaris/x86: other targets define this statically.
3637 i?86-*-solaris2* | x86_64-*-solaris2*)
3638 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3639 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3643 # Full support for hidden thunks in linkonce sections only appeared in
3644 # Solaris 11/OpenSolaris.
3645 *-*-solaris2.1[[1-9]]*)
3653 AC_MSG_RESULT($hidden_linkonce)
3654 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3655 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3656 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3660 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3665 .loc 1 1 0 is_stmt 1],,
3666 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3667 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3669 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3670 gcc_cv_as_discriminator,
3674 .loc 1 1 0 discriminator 1],,
3675 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3676 [Define if your assembler supports the .loc discriminator sub-directive.])])
3678 # Catch the newlib flag of the same name so we can gate GCC features on it.
3679 AC_ARG_ENABLE(newlib-nano-formatted-io,
3680 [AS_HELP_STRING([--enable-newlib-nano-formatted-io], [Use nano version
3682 [case "${enableval}" in
3686 AC_MSG_ERROR([unknown newlib-nano-formatted-io setting $enableval])
3690 # Thread-local storage - the check is heavily parameterized.
3699 .section ".tdata","awT",@progbits
3702 ldq $27,__tls_get_addr($29) !literal!1
3703 lda $16,foo($29) !tlsgd!1
3704 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3705 ldq $27,__tls_get_addr($29) !literal!2
3706 lda $16,foo($29) !tlsldm!2
3707 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3708 ldq $1,foo($29) !gotdtprel
3709 ldah $2,foo($29) !dtprelhi
3710 lda $3,foo($2) !dtprello
3711 lda $4,foo($29) !dtprel
3712 ldq $1,foo($29) !gottprel
3713 ldah $2,foo($29) !tprelhi
3714 lda $3,foo($2) !tprello
3715 lda $4,foo($29) !tprel'
3718 tls_as_opt=--fatal-warnings
3722 add_s r0,r0, @foo@tpoff'
3726 cris-*-*|crisv32-*-*)
3728 .section ".tdata","awT",@progbits
3735 tls_as_opt=--fatal-warnings
3739 .section ".tdata","awT",@progbits
3751 .section ".tdata","awT",@progbits
3755 addil LT%foo-$tls_gdidx$,gp
3756 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3759 addil LT%foo-$tls_ldidx$,gp
3761 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3762 addil LR%foo-$tls_dtpoff$,%ret0
3763 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3765 addil LT%foo-$tls_ieoff$,gp
3766 ldw RT%foo-$tls_ieoff$(%r1),%t2
3769 addil LR%foo-$tls_leoff$,%t1
3770 ldo RR%foo-$tls_leoff$(%r1),%t2'
3773 tls_as_opt=--fatal-warnings
3777 .section ".tdata","awT",%progbits
3788 i[34567]86-*-* | x86_64-*-*)
3790 i[34567]86-*-solaris2.* | x86_64-*-solaris2.*)
3797 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3799 .section .tdata,"awt",@progbits'
3804 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3805 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3809 .section ".tdata","awT",@progbits'
3813 tls_as_opt="--fatal-warnings"
3817 if test x$on_solaris = xyes; then
3819 yes) tls_as_opt="$tls_as_opt --32" ;;
3822 conftest_s="$conftest_s
3826 leal foo@tlsgd(,%ebx,1), %eax
3827 leal foo@tlsldm(%ebx), %eax
3828 leal foo@dtpoff(%eax), %edx
3829 movl foo@gottpoff(%ebx), %eax
3830 subl foo@gottpoff(%ebx), %eax
3831 addl foo@gotntpoff(%ebx), %eax
3832 movl foo@indntpoff, %eax
3833 movl \$foo@tpoff, %eax
3834 subl \$foo@tpoff, %eax
3835 leal foo@ntpoff(%ecx), %eax"
3838 if test x$on_solaris = xyes; then
3840 yes) tls_as_opt="$tls_as_opt --64" ;;
3841 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3844 conftest_s="$conftest_s
3848 leaq foo@tlsgd(%rip), %rdi
3849 leaq foo@tlsld(%rip), %rdi
3850 leaq foo@dtpoff(%rax), %rdx
3851 movq foo@gottpoff(%rip), %rax
3852 movq \$foo@tpoff, %rax"
3858 .section ".tdata","awT",@progbits
3861 addl r16 = @ltoff(@dtpmod(foo#)), gp
3862 addl r17 = @ltoff(@dtprel(foo#)), gp
3863 addl r18 = @ltoff(@tprel(foo#)), gp
3864 addl r19 = @dtprel(foo#), gp
3865 adds r21 = @dtprel(foo#), r13
3866 movl r23 = @dtprel(foo#)
3867 addl r20 = @tprel(foo#), gp
3868 adds r22 = @tprel(foo#), r13
3869 movl r24 = @tprel(foo#)'
3872 tls_as_opt=--fatal-warnings
3876 .section .tdata,"awT",@progbits
3880 addik r5,r20,x@TLSGD
3881 addik r5,r20,x@TLSLDM'
3884 tls_as_opt='--fatal-warnings'
3888 .section .tdata,"awT",@progbits
3892 addiu $4, $28, %tlsgd(x)
3893 addiu $4, $28, %tlsldm(x)
3894 lui $4, %dtprel_hi(x)
3895 addiu $4, $4, %dtprel_lo(x)
3896 lw $4, %gottprel(x)($28)
3897 lui $4, %tprel_hi(x)
3898 addiu $4, $4, %tprel_lo(x)'
3901 tls_as_opt='-32 --fatal-warnings'
3905 .section .tdata,"awT",@progbits
3910 move.l x@TLSGD(%a5),%a0
3911 move.l x@TLSLDM(%a5),%a0
3912 move.l x@TLSLDO(%a5),%a0
3913 move.l x@TLSIE(%a5),%a0
3914 move.l x@TLSLE(%a5),%a0'
3917 tls_as_opt='--fatal-warnings'
3921 .section ".tdata","awT",@progbits'
3924 tls_as_opt="--fatal-warnings"
3928 .section ".tdata","awT",%progbits
3932 add x0, x0, #:tlsgd_lo12:x
3937 tls_as_opt='--fatal-warnings'
3941 .section ".tdata","awT",@progbits
3944 l.movhi r3, tpoffha(foo)
3946 l.lwz r4, tpofflo(foo)(r3)'
3949 tls_as_opt=--fatal-warnings
3953 .extern __get_tpointer
3971 .section ".tdata","awT",@progbits
3979 addi 3,2,ld0@got@tlsgd
3985 addi 3,2,x1@got@tlsld
3991 addis 9,3,x2@dtprel@ha
3992 addi 9,9,x2@dtprel@l
3995 ld 9,x3@got@dtprel(2)
4001 tls_as_opt="-a64 --fatal-warnings"
4005 .section ".tdata","awT",@progbits
4013 addi 3,31,ld0@got@tlsgd
4015 addi 3,31,x1@got@tlsld
4018 addis 9,3,x2@dtprel@ha
4019 addi 9,9,x2@dtprel@l
4020 lwz 9,x3@got@tprel(31)
4023 addis 9,2,x2@tprel@ha
4024 addi 9,9,x2@tprel@l'
4027 tls_as_opt="-a32 --fatal-warnings"
4031 .section .tdata,"awT",@progbits
4035 call __tls_get_addr'
4038 tls_as_opt='--fatal-warnings'
4042 .section ".tdata","awT",@progbits
4051 l %r1,foo@GOTNTPOFF(%r12)
4052 l %r1,0(%r1):tls_load:foo
4053 bas %r14,0(%r1,%r13):tls_gdcall:foo
4054 bas %r14,0(%r1,%r13):tls_ldcall:foo'
4057 tls_as_opt="-m31 --fatal-warnings"
4061 .section ".tdata","awT",@progbits
4069 lg %r1,foo@GOTNTPOFF(%r12)
4070 larl %r1,foo@INDNTPOFF
4071 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
4072 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
4075 tls_as_opt="-m64 -Aesame --fatal-warnings"
4077 sh-*-* | sh[123456789lbe]*-*-*)
4079 .section ".tdata","awT",@progbits
4089 tls_as_opt=--fatal-warnings
4093 sparc*-sun-solaris2.*)
4100 if test x$on_solaris = xyes && test x$gas_flag = xno; then
4102 .section ".tdata",#alloc,#write,#tls'
4107 .section ".tdata","awT",@progbits'
4110 tls_as_opt="-32 --fatal-warnings"
4112 conftest_s="$conftest_s
4115 sethi %tgd_hi22(foo), %o0
4116 add %o0, %tgd_lo10(foo), %o1
4117 add %l7, %o1, %o0, %tgd_add(foo)
4118 call __tls_get_addr, %tgd_call(foo)
4119 sethi %tldm_hi22(foo), %l1
4120 add %l1, %tldm_lo10(foo), %l2
4121 add %l7, %l2, %o0, %tldm_add(foo)
4122 call __tls_get_addr, %tldm_call(foo)
4123 sethi %tldo_hix22(foo), %l3
4124 xor %l3, %tldo_lox10(foo), %l4
4125 add %o0, %l4, %l5, %tldo_add(foo)
4126 sethi %tie_hi22(foo), %o3
4127 add %o3, %tie_lo10(foo), %o3
4128 ld [%l7 + %o3], %o2, %tie_ld(foo)
4129 add %g7, %o2, %o4, %tie_add(foo)
4130 sethi %tle_hix22(foo), %l1
4131 xor %l1, %tle_lox10(foo), %o5
4132 ld [%g7 + %o5], %o1"
4136 .section ".tdata","awT",@progbits
4139 addli r0, zero, tls_gd(foo)
4140 auli r0, zero, tls_gd_ha16(foo)
4141 addli r0, r0, tls_gd_lo16(foo)
4143 addli r0, zero, tls_ie(foo)
4144 auli r0, r0, tls_ie_ha16(foo)
4145 addli r0, r0, tls_ie_lo16(foo)'
4148 tls_as_opt="--fatal-warnings"
4152 .section ".tdata","awT",@progbits
4155 shl16insli r0, zero, hw0_last_tls_gd(foo)
4156 shl16insli r0, zero, hw1_last_tls_gd(foo)
4157 shl16insli r0, r0, hw0_tls_gd(foo)
4159 shl16insli r0, zero, hw1_last_tls_ie(foo)
4160 shl16insli r0, r0, hw0_tls_ie(foo)'
4163 tls_as_opt="--fatal-warnings"
4167 .section ".tdata","awT",@progbits
4170 movi a8, foo@TLSFUNC
4171 movi a10, foo@TLSARG
4172 callx8.tls a8, foo@TLSCALL'
4179 if test "x$enable_tls" = xno ; then
4180 : # TLS explicitly disabled.
4181 elif test "x$enable_tls" = xyes ; then
4182 set_have_as_tls=yes # TLS explicitly enabled.
4183 elif test -z "$tls_first_major"; then
4184 : # If we don't have a check, assume no support.
4186 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
4187 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
4188 [set_have_as_tls=yes])
4190 if test $set_have_as_tls = yes ; then
4191 AC_DEFINE(HAVE_AS_TLS, 1,
4192 [Define if your assembler and linker support thread-local storage.])
4195 # Target-specific assembler checks.
4197 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
4198 gcc_cv_ld_static_dynamic=no
4199 gcc_cv_ld_static_option='-Bstatic'
4200 gcc_cv_ld_dynamic_option='-Bdynamic'
4201 if test $in_tree_ld = yes ; then
4202 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
4203 gcc_cv_ld_static_dynamic=yes
4205 elif test x$gcc_cv_ld != x; then
4206 # Check if linker supports -Bstatic/-Bdynamic option
4207 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
4208 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
4209 gcc_cv_ld_static_dynamic=yes
4212 # AIX ld uses -b flags
4213 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
4214 gcc_cv_ld_static_dynamic=yes
4215 gcc_cv_ld_static_option="-bstatic"
4216 gcc_cv_ld_dynamic_option="-bdynamic"
4218 # HP-UX ld uses -a flags to select between shared and archive.
4220 if test x"$gnu_ld" = xno; then
4221 gcc_cv_ld_static_dynamic=yes
4222 gcc_cv_ld_static_option="-aarchive_shared"
4223 gcc_cv_ld_dynamic_option="-adefault"
4226 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
4228 gcc_cv_ld_static_dynamic=yes
4233 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
4234 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
4235 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
4236 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
4237 [Define to the linker option to disable use of shared objects.])
4238 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
4239 [Define to the linker option to enable use of shared objects.])
4241 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
4243 AC_MSG_CHECKING(linker --version-script option)
4244 gcc_cv_ld_version_script=no
4245 ld_version_script_option=''
4246 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4247 gcc_cv_ld_version_script=yes
4248 ld_version_script_option='--version-script'
4249 elif test x$gcc_cv_ld != x; then
4251 # Solaris 2 ld always supports -M. It also supports a subset of
4252 # --version-script since Solaris 11.4, but requires
4253 # -z gnu-version-script-compat to activate.
4255 gcc_cv_ld_version_script=yes
4256 ld_version_script_option='-M'
4260 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4261 AC_MSG_RESULT($gcc_cv_ld_version_script)
4262 AC_SUBST(ld_version_script_option)
4264 AC_MSG_CHECKING(linker soname option)
4266 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4267 gcc_cv_ld_soname=yes
4268 ld_soname_option='-soname'
4269 elif test x$gcc_cv_ld != x; then
4272 gcc_cv_ld_soname=yes
4273 ld_soname_option='-install_name'
4275 # Solaris 2 ld always supports -h. It also supports --soname for GNU
4276 # ld compatiblity since some Solaris 10 update.
4278 gcc_cv_ld_soname=yes
4279 ld_soname_option='-h'
4283 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4284 AC_MSG_RESULT($gcc_cv_ld_soname)
4285 AC_SUBST(ld_soname_option)
4287 if test x"$demangler_in_ld" = xyes; then
4288 AC_MSG_CHECKING(linker --demangle support)
4289 gcc_cv_ld_demangle=no
4290 if test $in_tree_ld = yes; then
4291 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
4292 gcc_cv_ld_demangle=yes
4294 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
4295 # Check if the GNU linker supports --demangle option
4296 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
4297 gcc_cv_ld_demangle=yes
4300 if test x"$gcc_cv_ld_demangle" = xyes; then
4301 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
4302 [Define if your linker supports --demangle option.])
4304 AC_MSG_RESULT($gcc_cv_ld_demangle)
4307 AC_MSG_CHECKING(linker plugin support)
4309 if test -f liblto_plugin.la; then
4310 save_ld_ver="$ld_ver"
4311 save_ld_vers_major="$ld_vers_major"
4312 save_ld_vers_minor="$ld_vers_minor"
4313 save_ld_is_gold="$ld_is_gold"
4317 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
4319 # FIXME: ld_is_gold?
4320 ld_vers_major="$gcc_cv_gld_major_version"
4321 ld_vers_minor="$gcc_cv_gld_minor_version"
4323 # Determine plugin linker version.
4324 # FIXME: Partial duplicate from above, generalize.
4326 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
4327 if echo "$ld_ver" | grep GNU > /dev/null; then
4328 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
4330 ld_vers=`echo $ld_ver | sed -n \
4331 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
4333 ld_vers=`echo $ld_ver | sed -n \
4334 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
4336 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
4337 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
4342 # Determine plugin support.
4343 if echo "$ld_ver" | grep GNU > /dev/null; then
4344 # Require GNU ld or gold 2.21+ for plugin support by default.
4345 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
4347 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
4348 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
4353 ld_ver="$save_ld_ver"
4354 ld_vers_major="$save_ld_vers_major"
4355 ld_vers_minor="$save_ld_vers_minor"
4356 ld_is_gold="$save_ld_is_gold"
4358 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
4359 [Define to the level of your linker's plugin support.])
4360 AC_MSG_RESULT($gcc_cv_lto_plugin)
4362 # Target OS-specific assembler checks.
4364 case "$target_os" in
4366 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
4367 gcc_cv_as_mmacosx_version_min,,
4368 [-mmacosx-version-min=10.1], [.text],,
4369 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
4370 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
4374 # Target CPU-specific assembler checks.
4378 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
4379 [-mabi=lp64], [.text],,,)
4380 if test x$gcc_cv_as_aarch64_mabi = xyes; then
4381 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
4382 [Define if your assembler supports the -mabi option.])
4384 if test x$with_abi = xilp32; then
4385 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4386 Upgrade the Assembler.])
4388 if test x"$with_multilib_list" = xdefault; then
4389 TM_MULTILIB_CONFIG=lp64
4391 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
4392 for aarch64_multilib in ${aarch64_multilibs}; do
4393 case ${aarch64_multilib} in
4395 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4396 Upgrade the Assembler.])
4404 # Check if we have binutils support for relocations types needed by -fpic
4405 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
4408 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
4409 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
4410 [Define if your assembler supports relocs needed by -fpic.])])
4411 # Enable Branch Target Identification Mechanism and Return Address
4412 # Signing by default.
4413 AC_ARG_ENABLE(standard-branch-protection,
4415 AS_HELP_STRING([--enable-standard-branch-protection],
4416 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4417 AS_HELP_STRING([--disable-standard-branch-protection],
4418 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4423 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1"
4428 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
4429 Valid choices are 'yes' and 'no'.])
4434 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
4435 AC_ARG_ENABLE(fix-cortex-a53-835769,
4437 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
4438 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4439 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
4440 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4445 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4450 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4451 Valid choices are 'yes' and 'no'.])
4457 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4458 AC_ARG_ENABLE(fix-cortex-a53-843419,
4460 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4461 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4462 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4463 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4468 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4473 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4474 Valid choices are 'yes' and 'no'.])
4482 # All TARGET_ABI_OSF targets.
4483 alpha*-*-linux* | alpha*-*-*bsd*)
4484 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4485 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
4488 extbl $3, $2, $3 !lituse_bytoff!1
4489 ldq $2, a($29) !literal!1
4490 ldq $4, b($29) !literal!2
4491 ldq_u $3, 0($2) !lituse_base!1
4492 ldq $27, f($29) !literal!5
4493 jsr $26, ($27), f !lituse_jsr!5
4494 ldah $29, 0($26) !gpdisp!3
4495 lda $0, c($29) !gprel
4496 ldah $1, d($29) !gprelhigh
4497 lda $1, d($1) !gprellow
4498 lda $29, 0($29) !gpdisp!3],,
4499 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4500 [Define if your assembler supports explicit relocations.])])
4501 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4502 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
4505 ldq $27, a($29) !literal!1
4506 jsr $26, ($27), a !lituse_jsrdirect!1],,
4507 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4508 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4512 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
4513 [--mlink-relax], [.text],,
4514 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4515 [Define if your avr assembler supports --mlink-relax option.])])
4517 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
4519 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4520 [Define if your avr assembler supports -mrmw option.])])
4522 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4523 gcc_cv_as_avr_mgccisr,,
4529 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4530 [Define if your avr assembler supports -mgcc-isr option.])])
4532 # Check how default linker description file implements .rodata for
4533 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4534 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4535 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4536 cat > conftest.s <<EOF
4537 .section .rodata,"a",@progbits
4539 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4544 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4545 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4546 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4547 if test -s conftest.nm
4549 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4551 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4552 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4554 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4555 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4556 cat conftest.nm >&AS_MESSAGE_LOG_FD
4557 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4558 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4561 AC_MSG_RESULT(test failed)
4562 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4563 cat conftest.s >&AS_MESSAGE_LOG_FD
4564 AC_MSG_WARN([[see `config.log' for details]])
4566 rm -f conftest.s conftest.o conftest.elf conftest.nm
4570 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4571 gcc_cv_as_cris_no_mul_bug,[2,15,91],
4572 [-no-mul-bug-abort], [.text],,
4573 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4574 [Define if your assembler supports the -no-mul-bug-abort option.])])
4578 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
4580 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4581 [Define if your assembler supports -relax option.])])
4583 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4584 gcc_cv_as_sparc_gotdata_op,,
4591 sethi %gdop_hix22(foo), %g1
4592 xor %g1, %gdop_lox10(foo), %g1
4593 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4594 [if test x$gcc_cv_ld != x \
4595 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4596 if test x$gcc_cv_objdump != x; then
4597 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4598 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4599 gcc_cv_as_sparc_gotdata_op=no
4601 gcc_cv_as_sparc_gotdata_op=yes
4606 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4607 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4609 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4610 gcc_cv_as_sparc_ua_pcrel,,
4618 .uaword %r_disp32(foo)],
4619 [if test x$gcc_cv_ld != x \
4620 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4621 gcc_cv_as_sparc_ua_pcrel=yes
4624 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4625 [Define if your assembler and linker support unaligned PC relative relocs.])
4627 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4628 gcc_cv_as_sparc_ua_pcrel_hidden,,
4633 .uaword %r_disp32(foo)
4634 .byte 0x32, 0x33, 0x34
4639 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4640 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4641 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4642 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4643 if $gcc_cv_objdump -R conftest 2> /dev/null \
4644 | grep 'DISP32' > /dev/null 2>&1; then
4647 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4651 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4652 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4653 ]) # unaligned pcrel relocs
4655 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4656 gcc_cv_as_sparc_offsetable_lo10,,
4659 or %g1, %lo(ab) + 12, %g1
4660 or %g1, %lo(ab + 12), %g1],
4661 [if test x$gcc_cv_objdump != x \
4662 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4663 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4664 gcc_cv_as_sparc_offsetable_lo10=yes
4666 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4667 [Define if your assembler supports offsetable %lo().])])
4669 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4670 gcc_cv_as_sparc_fmaf,,
4673 .register %g2, #scratch
4674 .register %g3, #scratch
4676 fmaddd %f0, %f2, %f4, %f6
4677 addxccc %g1, %g2, %g3
4678 fsrl32 %f2, %f4, %f8
4679 fnaddd %f10, %f12, %f14],,
4680 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4681 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4683 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4684 gcc_cv_as_sparc_sparc4,,
4687 .register %g2, #scratch
4688 .register %g3, #scratch
4691 1: cwbneg %g2, %g3, 1f
4694 aes_kexpand0 %f4, %f6, %f8
4695 des_round %f38, %f40, %f42, %f44
4696 camellia_f %f54, %f56, %f58, %f60
4697 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4698 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4699 [Define if your assembler supports SPARC4 instructions.])])
4701 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4702 gcc_cv_as_sparc_sparc5,,
4705 .register %g2, #scratch
4706 .register %g3, #scratch
4709 fpadd8 %f0, %f2, %f4],,
4710 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4711 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4713 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4714 gcc_cv_as_sparc_sparc6,,
4717 .register %g2, #scratch
4718 .register %g3, #scratch
4721 fpsll64x %f0, %f2, %f4],,
4722 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4723 [Define if your assembler supports SPARC6 instructions.])])
4725 gcc_GAS_CHECK_FEATURE([LEON instructions],
4726 gcc_cv_as_sparc_leon,,
4729 .register %g2, #scratch
4730 .register %g3, #scratch
4734 casa [[%g2]] 0xb, %g3, %g1],,
4735 [AC_DEFINE(HAVE_AS_LEON, 1,
4736 [Define if your assembler supports LEON instructions.])])
4740 i[34567]86-*-* | x86_64-*-*)
4744 # Full C++ conformance when using a shared libstdc++-v3 requires some
4745 # support from the Cygwin DLL, which in more recent versions exports
4746 # wrappers to aid in interposing and redirecting operators new, delete,
4747 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4748 # are configuring for a version of Cygwin that exports the wrappers.
4749 if test x$host = x$target && test x$host_cpu = xi686; then
4750 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4752 # Can't check presence of libc functions during cross-compile, so
4753 # we just have to assume we're building for an up-to-date target.
4754 gcc_ac_cygwin_dll_wrappers=yes
4756 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4757 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4758 [Define if you want to generate code by default that assumes that the
4759 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4762 cygwin* | pe | mingw32*)
4763 # Recent binutils allows the three-operand form of ".comm" on PE. This
4764 # definition is used unconditionally to initialise the default state of
4765 # the target option variable that governs usage of the feature.
4766 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4767 [2,19,52],,[.comm foo,1,32])
4768 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4769 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4770 [Define if your assembler supports specifying the alignment
4771 of objects allocated using the GAS .comm command.])
4772 # Used for DWARF 2 in PE
4773 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4774 gcc_cv_as_ix86_pe_secrel32,
4780 [if test x$gcc_cv_ld != x \
4781 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4782 gcc_cv_as_ix86_pe_secrel32=yes
4785 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4786 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4787 # Test if the assembler supports the extended form of the .section
4788 # directive that specifies section alignment. LTO support uses this,
4789 # but normally only after installation, so we warn but don't fail the
4790 # configure if LTO is enabled but the assembler does not support it.
4791 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4792 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4793 if test x$gcc_cv_as_section_has_align != xyes; then
4794 case ",$enable_languages," in
4796 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4803 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,,
4804 [-xbrace_comment=no], [.text],,
4805 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4806 [Define if your assembler supports -xbrace_comment option.])])
4808 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4809 gcc_cv_as_ix86_filds,,,
4810 [filds (%ebp); fists (%ebp)],,
4811 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4812 [Define if your assembler uses filds and fists mnemonics.])])
4814 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4815 gcc_cv_as_ix86_fildq,,,
4816 [fildq (%ebp); fistpq (%ebp)],,
4817 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4818 [Define if your assembler uses fildq and fistq mnemonics.])])
4820 gcc_GAS_CHECK_FEATURE([cmov syntax],
4821 gcc_cv_as_ix86_cmov_sun_syntax,,,
4822 [cmovl.l %edx, %eax],,
4823 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4824 [Define if your assembler supports the Sun syntax for cmov.])])
4826 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4827 gcc_cv_as_ix86_ffreep,,,
4829 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4830 [Define if your assembler supports the ffreep mnemonic.])])
4832 gcc_GAS_CHECK_FEATURE([.quad directive],
4833 gcc_cv_as_ix86_quad,,,
4835 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4836 [Define if your assembler supports the .quad directive.])])
4838 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4839 gcc_cv_as_ix86_sahf,,,
4842 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4843 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4845 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4846 gcc_cv_as_ix86_interunit_movq,,,
4850 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4851 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4852 [Define if your assembler supports interunit movq mnemonic.])
4854 gcc_GAS_CHECK_FEATURE([hle prefixes],
4855 gcc_cv_as_ix86_hle,,,
4856 [lock xacquire cmpxchg %esi, (%ecx)],,
4857 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4858 [Define if your assembler supports HLE prefixes.])])
4860 gcc_GAS_CHECK_FEATURE([swap suffix],
4861 gcc_cv_as_ix86_swap,,,
4862 [movl.s %esp, %ebp],,
4863 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4864 [Define if your assembler supports the swap suffix.])])
4866 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4867 gcc_cv_as_ix86_diff_sect_delta,,,
4875 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4876 [Define if your assembler supports the subtraction of symbols in different sections.])])
4878 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4879 gcc_cv_as_ix86_rep_lock_prefix,,,
4885 lock addl %edi, (%eax,%esi)
4886 lock orl $0, (%esp)],,
4887 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4888 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4890 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4891 gcc_cv_as_ix86_ud2,,,
4893 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4894 [Define if your assembler supports the 'ud2' mnemonic.])])
4896 # Enforce 32-bit output with gas and gld.
4897 if test x$gas = xyes; then
4898 as_ix86_gas_32_opt="--32"
4900 if echo "$ld_ver" | grep GNU > /dev/null; then
4901 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4902 ld_ix86_gld_32_opt="-melf_i386_sol2"
4904 ld_ix86_gld_32_opt="-melf_i386"
4908 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4909 gcc_cv_as_ix86_tlsgdplt,,
4910 [$as_ix86_gas_32_opt],
4911 [call tls_gd@tlsgdplt],
4912 [if test x$gcc_cv_ld != x \
4913 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4914 gcc_cv_as_ix86_tlsgdplt=yes
4917 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4918 [Define if your assembler and linker support @tlsgdplt.])])
4921 .section .tdata,"aw'$tls_section_flag'",@progbits
4923 .section .text,"ax",@progbits
4924 call tls_ld@tlsldmplt'
4926 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4927 gcc_cv_as_ix86_tlsldmplt,,
4928 [$as_ix86_gas_32_opt],
4930 [if test x$gcc_cv_ld != x \
4931 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4932 gcc_cv_as_ix86_tlsldmplt=yes
4935 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4936 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4937 [Define to 1 if your assembler and linker support @tlsldmplt.])
4940 .section .text,"ax",@progbits
4942 .type _start, @function
4944 leal value@tlsldm(%ebx), %eax
4945 call ___tls_get_addr@plt
4947 .section .tdata,"aw'$tls_section_flag'",@progbits
4948 .type value, @object
4950 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4951 gcc_cv_as_ix86_tlsldm,,
4952 [$as_ix86_gas_32_opt],
4954 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4955 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4956 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4957 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4958 gcc_cv_as_ix86_tlsldm=yes
4962 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4963 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4964 [Define to 1 if your assembler and linker support @tlsldm.])
4975 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4976 gcc_cv_as_ix86_got32x,,
4977 [$as_ix86_gas_32_opt],
4979 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4980 && test x$gcc_cv_readelf != x \
4981 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4982 | grep R_386_GOT32X > /dev/null 2>&1 \
4983 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4984 if $gcc_cv_objdump -dw conftest 2>&1 \
4985 | grep 0xffffff > /dev/null 2>&1; then
4986 gcc_cv_as_ix86_got32x=no
4988 gcc_cv_as_ix86_got32x=yes
4992 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4993 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4994 [Define 0/1 if your assembler and linker support @GOT.])
4996 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4997 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4998 [$as_ix86_gas_32_opt],
5004 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
5005 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
5006 [Define true if the assembler supports '.long foo@GOTOFF'.])
5009 .section .text,"ax",@progbits
5011 .type _start, @function
5013 leal ld@tlsldm(%ecx), %eax
5014 call *___tls_get_addr@GOT(%ecx)
5015 leal gd@tlsgd(%ecx), %eax
5016 call *___tls_get_addr@GOT(%ecx)
5018 .section .tdata,"aw'$tls_section_flag'",@progbits
5026 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
5027 gcc_cv_as_ix86_tls_get_addr_via_got,,
5028 [$as_ix86_gas_32_opt],
5030 [if test x$gcc_cv_ld != x \
5031 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
5032 gcc_cv_as_ix86_tls_get_addr_via_got=yes
5035 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
5036 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
5037 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
5041 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
5042 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
5044 addl r15 = @ltoffx(x#), gp
5046 ld8.mov r16 = [[r15]], x#
5048 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
5049 [Define if your assembler supports ltoffx and ldxmov relocations.])])
5057 gcc_GAS_CHECK_FEATURE([.machine directive support],
5058 gcc_cv_as_machine_directive,,,
5059 [ .machine ppc7400])
5060 if test x$gcc_cv_as_machine_directive != xyes; then
5061 echo "*** This target requires an assembler supporting \".machine\"" >&2
5062 echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
5063 test x$build = x$target && exit 1
5069 *-*-aix*) conftest_s=' .machine "pwr5"
5072 *-*-darwin*) conftest_s=' .text
5074 *) conftest_s=' .machine power4
5079 gcc_GAS_CHECK_FEATURE([mfcr field support],
5080 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
5082 [AC_DEFINE(HAVE_AS_MFCRF, 1,
5083 [Define if your assembler supports mfcr field.])])
5086 *-*-aix*) conftest_s=' .csect .text[[PR]]
5088 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
5092 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
5093 *) conftest_s=' .text
5095 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
5098 gcc_GAS_CHECK_FEATURE([rel16 relocs],
5099 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
5101 [AC_DEFINE(HAVE_AS_REL16, 1,
5102 [Define if your assembler supports R_PPC_REL16 relocs.])])
5105 *-*-aix*) conftest_s=' .machine "pwr7"
5108 *) conftest_s=' .machine power7
5113 gcc_GAS_CHECK_FEATURE([vector-scalar support],
5114 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
5116 [AC_DEFINE(HAVE_AS_VSX, 1,
5117 [Define if your assembler supports VSX instructions.])])
5119 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5120 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
5121 [.gnu_attribute 4,1],,
5122 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5123 [Define if your assembler supports .gnu_attribute.])])
5125 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
5126 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
5127 [ .reloc .,R_PPC64_ENTRY; nop],,
5128 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
5129 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
5131 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
5132 gcc_cv_as_powerpc_pltseq_markers, [2,31,0],-a32 --fatal-warnings,
5133 [ .reloc .,R_PPC_PLTSEQ; nop],,
5134 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
5135 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
5139 gcc_GAS_CHECK_FEATURE([AIX .ref support],
5140 gcc_cv_as_aix_ref, [2,21,0],,
5141 [ .csect stuff[[rw]]
5147 [AC_DEFINE(HAVE_AS_REF, 1,
5148 [Define if your assembler supports .ref])])
5150 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
5151 gcc_cv_as_aix_dwloc, [2,21,0],,
5156 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
5157 [Define if your assembler supports AIX debug frame section label reference.])])
5163 gcc_GAS_CHECK_FEATURE([explicit relocation support],
5164 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
5165 [ lw $4,%gp_rel(foo)($4)],,
5166 [if test x$target_cpu_default = x
5167 then target_cpu_default=MASK_EXPLICIT_RELOCS
5168 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
5171 gcc_GAS_CHECK_FEATURE([-mno-shared support],
5172 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
5173 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
5174 [Define if the assembler understands -mno-shared.])])
5176 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5177 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
5178 [.gnu_attribute 4,1],,
5179 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5180 [Define if your assembler supports .gnu_attribute.])])
5182 gcc_GAS_CHECK_FEATURE([.module support],
5183 gcc_cv_as_mips_dot_module,,[-32],
5186 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
5187 [Define if your assembler supports .module.])])
5188 if test x$gcc_cv_as_mips_dot_module = xno \
5189 && test x$with_fp_32 != x; then
5191 [Requesting --with-fp-32= requires assembler support for .module.])
5194 gcc_GAS_CHECK_FEATURE([.micromips support],
5195 gcc_cv_as_micromips_support,,[--fatal-warnings],
5197 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
5198 [Define if your assembler supports the .set micromips directive])])
5200 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5201 gcc_cv_as_mips_dtprelword, [2,18,0],,
5202 [.section .tdata,"awT",@progbits
5206 .dtprelword x+0x8000],,
5207 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5208 [Define if your assembler supports .dtprelword.])])
5210 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
5211 gcc_cv_as_mips_dspr1_mult,,,
5221 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
5222 [Define if your assembler supports DSPR1 mult.])])
5224 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
5225 gcc_cv_as_ld_jalr_reloc=no
5226 if test $gcc_cv_as_mips_explicit_relocs = yes; then
5227 if test $in_tree_ld = yes ; then
5228 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
5229 && test $in_tree_ld_is_elf = yes; then
5230 gcc_cv_as_ld_jalr_reloc=yes
5232 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
5233 echo ' .ent x' > conftest.s
5234 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
5235 echo ' lw $25,%call16(y)($28)' >> conftest.s
5236 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
5237 echo '1: jalr $25' >> conftest.s
5238 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
5239 echo '1: jalr $25' >> conftest.s
5240 echo ' .end x' >> conftest.s
5241 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
5242 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
5243 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
5244 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
5245 gcc_cv_as_ld_jalr_reloc=yes
5251 if test $gcc_cv_as_ld_jalr_reloc = yes; then
5252 if test x$target_cpu_default = x; then
5253 target_cpu_default=MASK_RELAX_PIC_CALLS
5255 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
5258 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
5260 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
5261 [gcc_cv_ld_mips_personality_relaxation],
5262 [gcc_cv_ld_mips_personality_relaxation=no
5263 if test $in_tree_ld = yes ; then
5264 if test "$gcc_cv_gld_major_version" -eq 2 \
5265 -a "$gcc_cv_gld_minor_version" -ge 21 \
5266 -o "$gcc_cv_gld_major_version" -gt 2; then
5267 gcc_cv_ld_mips_personality_relaxation=yes
5269 elif test x$gcc_cv_as != x \
5270 -a x$gcc_cv_ld != x \
5271 -a x$gcc_cv_readelf != x ; then
5272 cat > conftest.s <<EOF
5274 .cfi_personality 0x80,indirect_ptr
5281 .section .data,"aw",@progbits
5285 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
5286 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
5287 if $gcc_cv_readelf -d conftest 2>&1 \
5288 | grep TEXTREL > /dev/null 2>&1; then
5290 elif $gcc_cv_readelf --relocs conftest 2>&1 \
5291 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
5294 gcc_cv_ld_mips_personality_relaxation=yes
5298 rm -f conftest.s conftest.o conftest])
5299 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
5300 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
5301 [Define if your linker can relax absolute .eh_frame personality
5302 pointers into PC-relative form.])
5305 gcc_GAS_CHECK_FEATURE([-mnan= support],
5306 gcc_cv_as_mips_nan,,
5308 [AC_DEFINE(HAVE_AS_NAN, 1,
5309 [Define if the assembler understands -mnan=.])])
5310 if test x$gcc_cv_as_mips_nan = xno \
5311 && test x$with_nan != x; then
5313 [Requesting --with-nan= requires assembler support for -mnan=])
5317 # Earlier GAS versions generically support .gnu_attribute, but the
5318 # msp430 assembler will not do anything with it.
5319 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5320 gcc_cv_as_msp430_gnu_attribute, [2,33,50],,
5321 [.gnu_attribute 4,1],,
5322 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5323 [Define if your assembler supports .gnu_attribute.])])
5324 gcc_GAS_CHECK_FEATURE([.mspabi_attribute support],
5325 gcc_cv_as_msp430_mspabi_attribute, [2,33,50],,
5326 [.mspabi_attribute 4,2],,
5327 [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1,
5328 [Define if your assembler supports .mspabi_attribute.])])
5329 if test x$enable_newlib_nano_formatted_io = xyes; then
5330 AC_DEFINE(HAVE_NEWLIB_NANO_FORMATTED_IO, 1, [Define if GCC has been
5331 configured with --enable-newlib-nano-formatted-io.])
5335 # Versions 2.33 and earlier lacked support for the %gotoff relocation
5336 # syntax that is documented in the ABI specification.
5337 gcc_GAS_CHECK_FEATURE([support for %gotoff relocations in constant data],
5338 gcc_cv_as_nios2_gotoff_relocation,,,
5341 .long %gotoff(foo)],,
5342 [AC_DEFINE(HAVE_AS_NIOS2_GOTOFF_RELOCATION, 1,
5343 [Define if your assembler supports %gotoff relocation syntax.])])
5346 gcc_GAS_CHECK_FEATURE([.attribute support],
5347 gcc_cv_as_riscv_attribute, [2,32,0],,
5348 [.attribute stack_align,4],,
5349 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1,
5350 [Define if your assembler supports .attribute.])])
5351 gcc_GAS_CHECK_FEATURE([-misa-spec= support],
5352 gcc_cv_as_riscv_isa_spec,,
5354 [AC_DEFINE(HAVE_AS_MISA_SPEC, 1,
5355 [Define if the assembler understands -misa-spec=.])])
5356 gcc_GAS_CHECK_FEATURE([-march=rv32i_zifencei support],
5357 gcc_cv_as_riscv_march_zifencei,,
5358 [-march=rv32i_zifencei],,,
5359 [AC_DEFINE(HAVE_AS_MARCH_ZIFENCEI, 1,
5360 [Define if the assembler understands -march=rv*_zifencei.])])
5363 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5364 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
5365 [.gnu_attribute 8,1],,
5366 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5367 [Define if your assembler supports .gnu_attribute.])])
5368 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
5369 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
5374 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
5375 [Define if your assembler supports .machine and .machinemode.])])
5376 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
5377 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
5378 [ .machine z13+vx ],,
5379 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
5380 [Define if your assembler supports architecture modifiers.])])
5381 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
5382 gcc_cv_as_s390_vector_loadstore_alignment_hints, [2,31,0],,
5383 [ vl %v24,0(%r15),3 ],,
5384 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
5385 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
5386 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints on z13],
5387 gcc_cv_as_s390_vector_loadstore_alignment_hints_on_z13,, [-mzarch -march=z13],
5388 [ vl %v24,0(%r15),3 ],,
5389 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS_ON_Z13, 1,
5390 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument on z13.])])
5395 # Mips and HP-UX need the GNU assembler.
5396 # Linux on IA64 might be able to use the Intel assembler.
5399 mips*-*-* | *-*-hpux* )
5400 if test x$gas_flag = xyes \
5401 || test x"$host" != x"$build" \
5402 || test ! -x "$gcc_cv_as" \
5403 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
5406 echo "*** This configuration requires the GNU assembler" >&2
5412 # This tests if the assembler supports two registers for global_load functions
5413 # (like in LLVM versions <12) or one register (like in LLVM 12).
5416 AC_MSG_CHECKING(assembler fix for global_load functions)
5417 gcc_cv_as_gcn_global_load_fixed=yes
5418 if test x$gcc_cv_as != x; then
5419 cat > conftest.s <<EOF
5420 global_store_dwordx2 v[[1:2]], v[[4:5]], s[[14:15]]
5422 if $gcc_cv_as -triple=amdgcn--amdhsa -filetype=obj -mcpu=gfx900 -o conftest.o conftest.s > /dev/null 2>&1; then
5423 gcc_cv_as_gcn_global_load_fixed=no
5425 rm -f conftest.s conftest.o conftest
5427 global_load_fixed=`if test x$gcc_cv_as_gcn_global_load_fixed = xyes; then echo 1; else echo 0; fi`
5428 AC_DEFINE_UNQUOTED(HAVE_GCN_ASM_GLOBAL_LOAD_FIXED, $global_load_fixed,
5429 [Define if your assembler has fixed global_load functions.])
5430 AC_MSG_RESULT($gcc_cv_as_gcn_global_load_fixed)
5436 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+sram-ecc for fiji],
5437 gcc_cv_as_gcn_sram_ecc_fiji,,
5438 [-triple=amdgcn--amdhsa -mcpu=fiji -mattr=-xnack -mattr=+sram-ecc],
5439 [.amdgcn_target "amdgcn-unknown-amdhsa--gfx803+sram-ecc"],,
5440 [AC_DEFINE(HAVE_GCN_SRAM_ECC_FIJI, 1,
5441 [Define if your assembler allows -mattr=+sram-ecc for fiji.])])
5442 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+sram-ecc for gfx900],
5443 gcc_cv_as_gcn_sram_ecc_gfx900,,
5444 [-triple=amdgcn--amdhsa -mcpu=gfx900 -mattr=-xnack -mattr=+sram-ecc],
5445 [.amdgcn_target "amdgcn-unknown-amdhsa--gfx900+sram-ecc"],,
5446 [AC_DEFINE(HAVE_GCN_SRAM_ECC_GFX900, 1,
5447 [Define if your assembler allows -mattr=+sram-ecc for gfx900.])])
5448 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+sram-ecc for gfx906],
5449 gcc_cv_as_gcn_sram_ecc_gfx906,,
5450 [-triple=amdgcn--amdhsa -mcpu=gfx906 -mattr=-xnack -mattr=+sram-ecc],
5451 [.amdgcn_target "amdgcn-unknown-amdhsa--gfx906+sram-ecc"],,
5452 [AC_DEFINE(HAVE_GCN_SRAM_ECC_GFX906, 1,
5453 [Define if your assembler allows -mattr=+sram-ecc for gfx906.])])
5454 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+sram-ecc for gfx908],
5455 gcc_cv_as_gcn_sram_ecc_gfx908,,
5456 [-triple=amdgcn--amdhsa -mcpu=gfx908 -mattr=-xnack -mattr=+sram-ecc],
5457 [.amdgcn_target "amdgcn-unknown-amdhsa--gfx908+sram-ecc"],,
5458 [AC_DEFINE(HAVE_GCN_SRAM_ECC_GFX908, 1,
5459 [Define if your assembler allows -mattr=+sram-ecc for gfx908.])])
5463 # ??? Not all targets support dwarf2 debug_line, even within a version
5464 # of gas. Moreover, we need to emit a valid instruction to trigger any
5465 # info to the output file. So, as supported targets are added to gas 2.11,
5466 # add some instruction here to (also) show we expect this might work.
5467 # ??? Once 2.11 is released, probably need to add first known working
5468 # version to the per-target configury.
5470 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \
5471 | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \
5472 | tilegx | tilepro | visium | xstormy16 | xtensa)
5482 if test x"$insn" != x; then
5484 .file 1 \"conftest.s\"
5487 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
5488 gcc_cv_as_dwarf2_debug_line,
5489 [elf,2,11,0],, [$conftest_s],
5490 [if test x$gcc_cv_objdump != x \
5491 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
5492 | grep debug_line > /dev/null 2>&1; then
5493 gcc_cv_as_dwarf2_debug_line=yes
5494 elif test x$gcc_cv_otool != x \
5495 && $gcc_cv_otool -l conftest.o 2> /dev/null \
5496 | grep debug_line > /dev/null 2>&1; then
5497 gcc_cv_as_dwarf2_debug_line=yes
5500 # The .debug_line file table must be in the exact order that
5501 # we specified the files, since these indices are also used
5502 # by DW_AT_decl_file. Approximate this test by testing if
5503 # the assembler bitches if the same index is assigned twice.
5504 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
5505 gcc_cv_as_dwarf2_file_buggy,,,
5509 if test $gcc_cv_as_dwarf2_debug_line = yes \
5510 && test $gcc_cv_as_dwarf2_file_buggy = no; then
5511 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
5512 [Define if your assembler supports dwarf2 .file/.loc directives,
5513 and preserves file table indices exactly as given.])
5515 if test $gcc_cv_as_leb128 = yes; then
5517 .file 1 \"conftest.s\"
5518 .loc 1 3 0 view .LVU1
5524 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
5525 gcc_cv_as_dwarf2_debug_view,
5526 [elf,2,27,0],,[$conftest_s],,
5527 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
5528 [Define if your assembler supports views in dwarf2 .loc directives.])])
5532 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
5533 gcc_cv_as_gdwarf2_flag,
5534 [elf,2,11,0], [--gdwarf2], [$insn],,
5535 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5536 [Define if your assembler supports the --gdwarf2 option.])])
5538 gcc_GAS_CHECK_FEATURE([--gdwarf-5 option],
5539 gcc_cv_as_gdwarf_5_flag,
5540 [elf,2,36,0], [--gdwarf-5], [$insn],
5541 [if test x$gcc_cv_objdump != x \
5542 && $gcc_cv_objdump -Wi conftest.o 2>&1 \
5543 | grep DW_TAG_compile_unit > /dev/null 2>&1; then
5544 gcc_cv_as_gdwarf_5_flag=yes;
5545 fi],[AC_DEFINE(HAVE_AS_GDWARF_5_DEBUG_FLAG, 1,
5546 [Define if your assembler supports the --gdwarf-5 option.])])
5549 win32 | pe | cygwin* | mingw32*)
5550 section_flags=\"dr\"
5551 function_type=".def foo; .scl 2; .type 32; .endef"
5554 section_flags=\"\",%progbits
5555 function_type=".type foo, %function"
5556 function_size=".size foo, .-foo";;
5558 dwarf4_debug_info_size=0x46
5559 dwarf4_high_pc_form=7
5560 dwarf4_debug_aranges_size=0x2c
5562 for dwarf4_addr_size in 8 4; do
5578 .section .debug_info,$section_flags
5580 .4byte $dwarf4_debug_info_size
5582 .4byte .Ldebug_abbrev0
5583 .byte 0x$dwarf4_addr_size
5585 .ascii \"GNU C17\\0\"
5589 .${dwarf4_addr_size}byte .Ltext0
5590 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5591 .4byte .Ldebug_line0
5597 .${dwarf4_addr_size}byte .LFB0
5598 .${dwarf4_addr_size}byte .LFE0-.LFB0
5602 .section .debug_abbrev,$section_flags
5618 .byte 0x$dwarf4_high_pc_form
5639 .byte 0x$dwarf4_high_pc_form
5645 .section .debug_aranges,$section_flags
5646 .4byte $dwarf4_debug_aranges_size
5648 .4byte .Ldebug_info0
5653 .${dwarf4_addr_size}byte .Ltext0
5654 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5655 .${dwarf4_addr_size}byte 0
5656 .${dwarf4_addr_size}byte 0
5657 .section .debug_line,$section_flags
5659 .4byte .LELT0-.LSLT0
5662 .4byte .LELTP0-.LASLTP0
5690 .byte 0x$dwarf4_line_sz
5692 .${dwarf4_addr_size}byte .LM1
5697 .byte 0x$dwarf4_line_sz
5699 .${dwarf4_addr_size}byte .LM2
5704 .byte 0x$dwarf4_line_sz
5706 .${dwarf4_addr_size}byte .Letext0
5711 .section .debug_str,$section_flags
5715 if test $dwarf4_addr_size = 4; then
5716 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 32-bit .debug_line],
5717 gcc_cv_as_debug_line_32_flag,
5718 [elf,2,36,0], [], [$conftest_s],,
5719 [dwarf4_success=yes])
5721 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 64-bit .debug_line],
5722 gcc_cv_as_debug_line_64_flag,
5723 [elf,2,36,0], [], [$conftest_s],,
5724 [dwarf4_success=yes])
5726 if test $dwarf4_success = yes; then
5728 gcc_GAS_CHECK_FEATURE([--gdwarf-4 not refusing compiler generated .debug_line],
5729 gcc_cv_as_dwarf_4_debug_line_flag,
5730 [elf,2,36,0], [--gdwarf-4], [$conftest_s],,
5731 [dwarf4_success=yes])
5734 dwarf4_debug_info_size=0x36
5735 dwarf4_high_pc_form=6
5736 dwarf4_debug_aranges_size=0x1c
5740 if test $dwarf4_success = yes; then
5758 gcc_GAS_CHECK_FEATURE([--gdwarf-4 with the APP marker],
5759 gcc_cv_as_dwarf_4_app_flag,,
5760 [--gdwarf-4], [$conftest_s],, [dwarf4_success=yes])
5763 if test $dwarf4_success = yes; then
5773 gcc_GAS_CHECK_FEATURE([working --gdwarf-4/--gdwarf-5 for all sources],
5774 gcc_cv_as_working_gdwarf_n_flag,,
5778 if test x$gcc_cv_objdump != x \
5779 && $gcc_cv_objdump -W conftest.o 2>&1 \
5780 | grep conftest.s > /dev/null 2>&1; then
5781 gcc_cv_as_working_gdwarf_n_flag=no
5783 gcc_cv_as_working_gdwarf_n_flag=yes
5785 changequote([,])dnl])
5786 if test $gcc_cv_as_working_gdwarf_n_flag = yes; then
5787 AC_DEFINE(HAVE_AS_WORKING_DWARF_N_FLAG, 1,
5788 [Define if your assembler supports --gdwarf-4/--gdwarf-5 even with
5789 compiler generated .debug_line.])
5793 gcc_GAS_CHECK_FEATURE([--gstabs option],
5794 gcc_cv_as_gstabs_flag,
5795 [elf,2,11,0], [--gstabs], [$insn],,
5796 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
5797 [Define if your assembler supports the --gstabs option.])])
5799 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5800 gcc_cv_as_debug_prefix_map_flag,
5801 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
5802 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5803 [Define if your assembler supports the --debug-prefix-map option.])])
5806 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5807 gcc_cv_as_compress_debug,,,,
5808 [# gas compiled without zlib cannot compress debug sections and warns
5809 # about it, but still exits successfully. So check for this, too.
5810 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5812 gcc_cv_as_compress_debug=0
5813 # Since binutils 2.26, gas supports --compress-debug-sections=type,
5814 # defaulting to the ELF gABI format.
5815 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
5817 gcc_cv_as_compress_debug=2
5818 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5819 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5820 # Before binutils 2.26, gas only supported --compress-debug-options and
5821 # emitted the traditional GNU format.
5822 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
5824 gcc_cv_as_compress_debug=1
5825 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5826 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5828 gcc_cv_as_compress_debug=0
5830 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5831 [Define to the level of your assembler's compressed debug section support.])
5832 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5833 [Define to the assembler option to enable compressed debug sections.])
5834 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5835 [Define to the assembler option to disable compressed debug sections.])
5837 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
5840 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5841 [Define if your assembler supports .lcomm with an alignment field.])])
5843 if test x$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,
5885 [.type foo, '$target_type_format_char'gnu_unique_object],,
5886 # We need to unquote above to to use the definition from config.gcc.
5887 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5888 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5890 if test x$enable_gnu_unique_object = xyes; then
5891 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5892 [Define if your assembler supports @gnu_unique_object.])
5895 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5896 [gcc_cv_as_line_zero],
5897 [gcc_cv_as_line_zero=no
5898 if test $in_tree_gas = yes; then
5899 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
5900 elif test "x$gcc_cv_as" != x; then
5901 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5902 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5903 test "x`cat conftest.out`" = x
5905 gcc_cv_as_line_zero=yes
5907 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5908 cat conftest.s >&AS_MESSAGE_LOG_FD
5909 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5910 cat conftest.out >&AS_MESSAGE_LOG_FD
5912 rm -f conftest.o conftest.s conftest.out
5914 if test "x$gcc_cv_as_line_zero" = xyes; then
5915 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5916 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5919 AC_MSG_CHECKING(support for thin archives)
5920 thin_archive_support=no
5921 echo 'int main (void) { return 0; }' > conftest.c
5922 if ($AR --version | sed 1q | grep "GNU ar" \
5923 && $CC $CFLAGS -c conftest.c \
5924 && $AR rcT conftest.a conftest.o \
5925 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5926 thin_archive_support=yes
5928 rm -f conftest.c conftest.o conftest.a conftest
5929 AC_MSG_RESULT($thin_archive_support)
5930 AC_SUBST(thin_archive_support)
5932 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5933 gcc_cv_ld_eh_frame_hdr=no
5934 if test $in_tree_ld = yes ; then
5935 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5936 && test $in_tree_ld_is_elf = yes; then
5937 gcc_cv_ld_eh_frame_hdr=yes
5939 elif test x$gcc_cv_ld != x; then
5940 if echo "$ld_ver" | grep GNU > /dev/null; then
5941 # Check if linker supports --eh-frame-hdr option
5942 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5943 gcc_cv_ld_eh_frame_hdr=yes
5948 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5949 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5950 gcc_cv_ld_eh_frame_hdr=yes
5956 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5957 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5958 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5959 [Define if your linker supports .eh_frame_hdr.])
5961 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5963 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5964 gcc_cv_ld_eh_frame_ciev3=no
5965 if test $in_tree_ld = yes ; then
5966 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5967 && test $in_tree_ld_is_elf = yes; then
5968 gcc_cv_ld_eh_frame_ciev3=yes
5970 elif test x$gcc_cv_ld != x; then
5971 if echo "$ld_ver" | grep GNU > /dev/null; then
5972 gcc_cv_ld_eh_frame_ciev3=yes
5973 if test 0"$ld_date" -lt 20040513; then
5974 if test -n "$ld_date"; then
5975 # If there was date string, but was earlier than 2004-05-13, fail
5976 gcc_cv_ld_eh_frame_ciev3=no
5977 elif test "$ld_vers_major" -lt 2; then
5978 gcc_cv_ld_eh_frame_ciev3=no
5979 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5980 gcc_cv_ld_eh_frame_ciev3=no
5986 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5987 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5988 gcc_cv_ld_eh_frame_ciev3=yes
5994 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5995 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5996 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5997 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5999 AC_MSG_CHECKING(linker position independent executable support)
6001 if test $in_tree_ld = yes ; then
6003 # Full PIE support on Solaris was only introduced in gld 2.26.
6004 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
6005 *) gcc_gld_pie_min_version=15 ;;
6007 if test "$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 \
6008 && test $in_tree_ld_is_elf = yes; then
6011 elif test x$gcc_cv_ld != x; then
6012 # Check if linker supports -pie option
6013 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
6017 if echo "$ld_ver" | grep GNU > /dev/null \
6018 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
6025 *-*-solaris2.1[[1-9]]*)
6026 # Solaris 11.3 added PIE support.
6027 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
6034 if test x"$gcc_cv_ld_pie" = xyes; then
6035 AC_DEFINE(HAVE_LD_PIE, 1,
6036 [Define if your linker supports PIE option.])
6038 AC_MSG_RESULT($gcc_cv_ld_pie)
6040 AC_MSG_CHECKING(linker PIE support with copy reloc)
6041 gcc_cv_ld_pie_copyreloc=no
6042 if test $gcc_cv_ld_pie = yes ; then
6043 if test $in_tree_ld = yes ; then
6044 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6045 gcc_cv_ld_pie_copyreloc=yes
6047 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6048 # Check if linker supports -pie option with copy reloc
6050 i?86-*-linux* | x86_64-*-linux*)
6051 cat > conftest1.s <<EOF
6054 .type a_glob, @object
6059 cat > conftest2.s <<EOF
6062 .type main, @function
6064 movl %eax, a_glob(%rip)
6067 .section .data.rel,"aw",@progbits
6072 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6073 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
6074 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6075 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
6076 gcc_cv_ld_pie_copyreloc=yes
6078 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
6083 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
6084 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
6085 [Define 0/1 if your linker supports -pie option with copy reloc.])
6086 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
6088 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
6089 gcc_cv_ld_eh_gc_sections=no
6090 if test $in_tree_ld = yes ; then
6091 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
6092 && test $in_tree_ld_is_elf = yes; then
6093 gcc_cv_ld_eh_gc_sections=yes
6095 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
6096 cat > conftest.s <<EOF
6099 .type _start, @function
6102 .size _start, .-_start
6103 .section .text.foo,"ax",@progbits
6104 .type foo, @function
6108 .section .gcc_except_table.foo,"a",@progbits
6111 .section .eh_frame,"a",@progbits
6114 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6115 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6116 | grep "gc-sections option ignored" > /dev/null; then
6117 gcc_cv_ld_eh_gc_sections=no
6118 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6119 | grep gcc_except_table > /dev/null; then
6120 gcc_cv_ld_eh_gc_sections=yes
6121 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
6122 if test x$gcc_cv_as_comdat_group != xyes; then
6123 gcc_cv_ld_eh_gc_sections=no
6124 cat > conftest.s <<EOF
6127 .type _start, @function
6130 .size _start, .-_start
6131 .section .gnu.linkonce.t.foo,"ax",@progbits
6132 .type foo, @function
6136 .section .gcc_except_table.foo,"a",@progbits
6139 .section .eh_frame,"a",@progbits
6142 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6143 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6144 | grep "gc-sections option ignored" > /dev/null; then
6145 gcc_cv_ld_eh_gc_sections=no
6146 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6147 | grep gcc_except_table > /dev/null; then
6148 gcc_cv_ld_eh_gc_sections=yes
6154 rm -f conftest.s conftest.o conftest
6158 # ??? This apparently exposes a binutils bug with PC-relative relocations.
6159 gcc_cv_ld_eh_gc_sections=no
6162 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
6163 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
6164 [Define if your linker supports garbage collection of
6165 sections in presence of EH frames.])
6167 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
6169 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
6170 gcc_cv_ld_eh_gc_sections_bug=no
6171 if test $in_tree_ld = yes ; then
6172 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
6173 && test $in_tree_ld_is_elf = yes; then
6174 gcc_cv_ld_eh_gc_sections_bug=yes
6176 elif test x$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
6177 gcc_cv_ld_eh_gc_sections_bug=yes
6178 cat > conftest.s <<EOF
6181 .type _start, @function
6184 .size _start, .-_start
6185 .section .text.startup.foo,"ax",@progbits
6186 .type foo, @function
6190 .section .gcc_except_table.foo,"a",@progbits
6193 .section .eh_frame,"a",@progbits
6196 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6197 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6198 | grep "gc-sections option ignored" > /dev/null; then
6200 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6201 | grep gcc_except_table > /dev/null; then
6202 gcc_cv_ld_eh_gc_sections_bug=no
6205 rm -f conftest.s conftest.o conftest
6207 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
6208 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
6209 [Define if your linker has buggy garbage collection of
6210 sections support when .text.startup.foo like sections are used.])
6212 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
6214 AC_MSG_CHECKING(linker for compressed debug sections)
6215 # gold/gld support compressed debug sections since binutils 2.19/2.21
6216 # In binutils 2.26, gld gained support for the ELF gABI format.
6217 if test $in_tree_ld = yes ; then
6218 gcc_cv_ld_compress_debug=0
6219 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
6220 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
6221 gcc_cv_ld_compress_debug=2
6222 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6223 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
6224 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
6225 gcc_cv_ld_compress_debug=3
6226 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6227 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
6228 && test $in_tree_ld_is_elf = yes; then
6229 gcc_cv_ld_compress_debug=1
6231 elif echo "$ld_ver" | grep GNU > /dev/null; then
6232 if test "$ld_vers_major" -lt 2 \
6233 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
6234 gcc_cv_ld_compress_debug=0
6235 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
6236 gcc_cv_ld_compress_debug=1
6238 gcc_cv_ld_compress_debug=3
6239 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6241 if test $ld_is_gold = yes; then
6242 gcc_cv_ld_compress_debug=2
6243 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6249 # Introduced in Solaris 11.2.
6250 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
6251 gcc_cv_ld_compress_debug=3
6252 gcc_cv_ld_compress_debug_option="-z compress-sections"
6254 gcc_cv_ld_compress_debug=0
6258 # Assume linkers other than GNU ld don't support compessed debug
6260 gcc_cv_ld_compress_debug=0
6265 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
6266 [Define to the level of your linker's compressed debug section support.])
6267 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
6268 [Define to the linker option to enable compressed debug sections.])
6269 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
6271 if test x"$ld64_flag" = x"yes"; then
6273 # Set defaults for possibly untestable items.
6274 gcc_cv_ld64_export_dynamic=0
6276 if test "$build" = "$host"; then
6282 # On Darwin, because of FAT library support, it is often possible to execute
6283 # exes from compatible archs even when the host differs from the build system.
6284 case "$build","$host" in
6285 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
6290 # If the configurer specified a minimum ld64 version to be supported, then use
6291 # that to determine feature support.
6292 if test x"${gcc_cv_ld64_version}" != x; then
6293 AC_MSG_CHECKING(ld64 specified version)
6294 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
6295 AC_MSG_RESULT($gcc_cv_ld64_major)
6296 if test "$gcc_cv_ld64_major" -ge 236; then
6297 gcc_cv_ld64_export_dynamic=1
6299 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
6300 # If the version was not specified, try to find it.
6301 AC_MSG_CHECKING(linker version)
6302 if test x"${gcc_cv_ld64_version}" = x; then
6303 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
6305 AC_MSG_RESULT($gcc_cv_ld64_version)
6307 AC_MSG_CHECKING(linker for -export_dynamic support)
6308 gcc_cv_ld64_export_dynamic=1
6309 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6310 gcc_cv_ld64_export_dynamic=0
6312 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
6315 if test x"${gcc_cv_ld64_version}" != x; then
6316 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
6317 [Define to ld64 version.])
6320 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
6321 [Define to 1 if ld64 supports '-export_dynamic'.])
6324 if test x"$dsymutil_flag" = x"yes"; then
6326 # If the user specified a dsymutil path, then we will already have the
6327 # version string, otherwise, pick it up.
6328 if test x"$gcc_cv_dsymutil" = x; then
6329 AC_MSG_WARN([dsymutil is a required tool for this system, but not found])
6330 dsymutil_vers="tool unspecified"
6331 elif test x"$dsymutil_vers" = x; then
6332 dsymutil_vers=`$gcc_cv_dsymutil -v /dev/null 2>&1`
6335 dsymutil_temp=`echo $dsymutil_vers | sed 1q`
6336 AC_MSG_CHECKING(dsymutil version "$dsymutil_temp")
6337 if echo $dsymutil_temp | grep dwarfutils- > /dev/null; then
6338 dsymutil_kind=DWARFUTILS
6339 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*dwarfutils-\([[0-9\.]]*\).*/\1/'`
6340 elif echo $dsymutil_temp | grep clang- > /dev/null; then
6342 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*clang-\([[0-9\.]]*\).*/\1/'`
6343 elif echo $dsymutil_temp | grep 'LLVM version ' > /dev/null; then
6345 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*LLVM\ version\ \([[0-9\.]]*\).*/\1/'`
6347 dsymutil_kind=UNKNOWN
6350 dsymutil_major=`expr "$dsymutil_vers" : '\([[0-9]]*\)'`
6351 dsymutil_minor=`expr "$dsymutil_vers" : '[[0-9]]*\.\([[0-9]]*\)'`
6352 dsymutil_tiny=`expr "$dsymutil_vers" : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
6353 if test x"${dsymutil_minor}" = x; then
6356 if test x"${dsymutil_tiny}" = x; then
6359 AC_DEFINE_UNQUOTED(DSYMUTIL_VERSION, [$dsymutil_kind,${dsymutil_major},${dsymutil_minor},${dsymutil_tiny}],
6360 [Define to the dsymutil version.])
6361 AC_MSG_RESULT($dsymutil_vers : $dsymutil_kind ${dsymutil_major} ${dsymutil_minor} ${dsymutil_tiny} )
6365 win32 | pe | cygwin* | mingw32*)
6366 AC_MSG_CHECKING(broken PE linker dwarf5 support)
6367 gcc_cv_ld_broken_pe_dwarf5=yes
6368 if test $in_tree_ld = yes ; then
6369 if grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6370 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc \
6371 && grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6372 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc; then
6373 gcc_cv_ld_broken_pe_dwarf5=no
6376 if $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6377 && $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:'; then
6378 gcc_cv_ld_broken_pe_dwarf5=no
6381 if test x$gcc_cv_ld_broken_pe_dwarf5 = xyes; then
6382 AC_DEFINE(HAVE_LD_BROKEN_PE_DWARF5, 1,
6383 [Define if the PE linker has broken DWARF 5 support.])
6385 AC_MSG_RESULT($gcc_cv_ld_broken_pe_dwarf5)
6387 AC_MSG_CHECKING(PE linker --disable-dynamicbase support)
6388 gcc_cv_ld_disable_dynamicbase=no
6389 if test $in_tree_ld = yes; then
6390 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 36 -o "$gcc_cv_gld_major_version" -gt 2; then \
6391 gcc_cv_ld_disable_dynamicbase=yes
6394 if $gcc_cv_ld --help 2>&1 | grep -q 'disable\-]dynamicbase' > /dev/null; then
6395 gcc_cv_ld_disable_dynamicbase=yes
6398 if test x"$gcc_cv_ld_disable_dynamicbase" = xyes; then
6399 AC_DEFINE(HAVE_LD_PE_DISABLE_DYNAMICBASE, 1,
6400 [Define if the PE linker supports --disable-dynamicbase option.])
6402 AC_MSG_RESULT($gcc_cv_ld_disable_dynamicbase)
6410 AC_CACHE_CHECK(linker --as-needed support,
6411 gcc_cv_ld_as_needed,
6412 [gcc_cv_ld_as_needed=no
6413 gcc_cv_ld_as_needed_option='--as-needed'
6414 gcc_cv_ld_no_as_needed_option='--no-as-needed'
6415 if test $in_tree_ld = yes ; then
6416 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
6417 && test $in_tree_ld_is_elf = yes; then
6418 gcc_cv_ld_as_needed=yes
6419 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
6420 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6421 gcc_cv_ld_no_as_needed_option='--pop-state'
6424 elif test x$gcc_cv_ld != x; then
6425 # Check if linker supports --as-needed and --no-as-needed options
6426 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
6427 gcc_cv_ld_as_needed=yes
6428 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
6429 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
6430 && echo "$ld_ver" | grep GNU > /dev/null \
6431 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
6432 # Use these options only when both ld.bfd and ld.gold support
6433 # --push-state/--pop-state, which unfortunately wasn't added
6435 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6436 gcc_cv_ld_no_as_needed_option='--pop-state'
6439 case "$target:$gnu_ld" in
6441 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
6443 gcc_cv_ld_as_needed=yes
6444 gcc_cv_ld_as_needed_option="-z ignore"
6445 gcc_cv_ld_no_as_needed_option="-z record"
6449 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
6450 # dl_iterate_phdr, i.e. since Solaris 11.
6452 *-*-solaris2.1[[1-9]]*)
6454 i?86-*-* | x86_64-*-*)
6455 if echo "$ld_ver" | grep GNU > /dev/null; then
6456 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
6457 gcc_cv_ld_as_needed=no
6463 gcc_cv_ld_as_needed=no
6467 if test x"$gcc_cv_ld_as_needed" = xyes; then
6468 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
6469 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
6470 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
6471 [Define to the linker option to ignore unused dependencies.])
6472 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
6473 [Define to the linker option to keep unused dependencies.])
6476 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
6477 saved_LDFLAGS="$LDFLAGS"
6478 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
6479 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
6480 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6481 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
6483 LDFLAGS="$saved_LDFLAGS"
6484 if test "x$gcc_cv_ld_clearcap" = xyes; then
6485 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
6486 [Define if the linker supports clearing hardware capabilities via mapfile.])
6487 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
6489 AC_MSG_RESULT($gcc_cv_ld_clearcap)
6495 emul_name="-melf32lppc"
6498 emul_name="-melf32ppc"
6501 AC_CACHE_CHECK(linker .gnu.attributes long double support,
6503 [gcc_cv_ld_ppc_attr=no
6504 if test x"$ld_is_gold" = xyes; then
6505 gcc_cv_ld_ppc_attr=yes
6506 elif test $in_tree_ld = yes ; then
6507 if test "$gcc_cv_gld_major_version" -eq 2 \
6508 -a "$gcc_cv_gld_minor_version" -ge 28 \
6509 -o "$gcc_cv_gld_major_version" -gt 2; then
6510 gcc_cv_ld_ppc_attr=yes
6512 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6513 # check that merging the long double .gnu_attribute doesn't warn
6514 cat > conftest1.s <<EOF
6517 cat > conftest2.s <<EOF
6520 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6521 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6522 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
6523 && test ! -s conftest.err; then
6524 gcc_cv_ld_ppc_attr=yes
6526 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
6529 if test x$gcc_cv_ld_ppc_attr = xyes; then
6530 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
6531 [Define if your PowerPC linker has .gnu.attributes long double support.])
6536 case "$target:$tm_file" in
6537 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
6540 emul_name="-melf64lppc"
6543 emul_name="-melf64ppc"
6546 emul_name="-melf64lppc_fbsd"
6549 emul_name="-melf64ppc_fbsd"
6552 AC_CACHE_CHECK(linker support for omitting dot symbols,
6553 gcc_cv_ld_no_dot_syms,
6554 [gcc_cv_ld_no_dot_syms=no
6555 if test x"$ld_is_gold" = xyes; then
6556 gcc_cv_ld_no_dot_syms=yes
6557 elif test $in_tree_ld = yes ; then
6558 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
6559 gcc_cv_ld_no_dot_syms=yes
6561 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6562 cat > conftest1.s <<EOF
6566 cat > conftest2.s <<EOF
6567 .section ".opd","aw"
6572 .quad .LEfoo,.TOC.@tocbase,0
6578 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6579 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6580 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
6581 gcc_cv_ld_no_dot_syms=yes
6583 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
6586 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
6587 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
6588 [Define if your PowerPC64 linker only needs function descriptor syms.])
6591 AC_CACHE_CHECK(linker large toc support,
6592 gcc_cv_ld_large_toc,
6593 [gcc_cv_ld_large_toc=no
6594 if test x"$ld_is_gold" = xyes; then
6595 gcc_cv_ld_large_toc=yes
6596 elif test $in_tree_ld = yes ; then
6597 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
6598 gcc_cv_ld_large_toc=yes
6600 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6601 cat > conftest.s <<EOF
6602 .section ".tbss","awT",@nobits
6608 addis 9,13,ie0@got@tprel@ha
6609 ld 9,ie0@got@tprel@l(9)
6611 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6612 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
6613 gcc_cv_ld_large_toc=yes
6615 rm -f conftest conftest.o conftest.s
6618 if test x"$gcc_cv_ld_large_toc" = xyes; then
6619 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6620 [Define if your PowerPC64 linker supports a large TOC.])
6623 AC_CACHE_CHECK(linker toc pointer alignment,
6624 gcc_cv_ld_toc_align,
6625 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
6626 cat > conftest.s <<EOF
6631 .section .data.rel.ro,"aw",@progbits
6636 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6637 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
6638 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
6640 rm -f conftest conftest.o conftest.s
6643 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
6644 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
6645 [Define to .TOC. alignment forced by your linker.])
6652 AC_CACHE_CHECK(linker large toc support,
6653 gcc_cv_ld_large_toc,
6654 [gcc_cv_ld_large_toc=no
6655 if test x$gcc_cv_as != x ; then
6656 cat > conftest.s <<EOF
6666 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
6667 gcc_cv_ld_large_toc=yes
6669 rm -f conftest conftest.o conftest.s
6672 if test x"$gcc_cv_ld_large_toc" = xyes; then
6673 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6674 [Define if your PowerPC64 linker supports a large TOC.])
6679 AC_CACHE_CHECK(linker --build-id support,
6681 [gcc_cv_ld_buildid=no
6682 if test $in_tree_ld = yes ; then
6683 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6684 "$gcc_cv_gld_minor_version" -ge 18 -o \
6685 "$gcc_cv_gld_major_version" -gt 2 \
6686 && test $in_tree_ld_is_elf = yes; then
6687 gcc_cv_ld_buildid=yes
6689 elif test x$gcc_cv_ld != x; then
6690 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
6691 gcc_cv_ld_buildid=yes
6694 if test x"$gcc_cv_ld_buildid" = xyes; then
6695 AC_DEFINE(HAVE_LD_BUILDID, 1,
6696 [Define if your linker supports --build-id.])
6699 AC_ARG_ENABLE(linker-build-id,
6700 [AS_HELP_STRING([--enable-linker-build-id],
6701 [compiler will always pass --build-id to linker])],
6703 enable_linker_build_id=no)
6705 if test x"$enable_linker_build_id" = xyes; then
6706 if test x"$gcc_cv_ld_buildid" = xyes; then
6707 AC_DEFINE(ENABLE_LD_BUILDID, 1,
6708 [Define if gcc should always pass --build-id to linker.])
6710 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
6714 # In binutils 2.21, GNU ld gained support for new emulations fully
6715 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
6716 AC_CACHE_CHECK(linker *_sol2 emulation support,
6717 gcc_cv_ld_sol2_emulation,
6718 [gcc_cv_ld_sol2_emulation=no
6719 if test $in_tree_ld = yes ; then
6720 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6721 "$gcc_cv_gld_minor_version" -ge 21 -o \
6722 "$gcc_cv_gld_major_version" -gt 2 \
6723 && test $in_tree_ld_is_elf = yes; then
6724 gcc_cv_ld_sol2_emulation=yes
6726 elif test x$gcc_cv_ld != x; then
6727 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
6728 grep _sol2 > /dev/null; then
6729 gcc_cv_ld_sol2_emulation=yes
6732 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
6733 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
6734 [Define if your linker supports the *_sol2 emulations.])
6737 AC_CACHE_CHECK(linker --sysroot support,
6739 [gcc_cv_ld_sysroot=no
6740 if test $in_tree_ld = yes ; then
6741 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
6742 gcc_cv_ld_sysroot=yes
6744 elif test x$gcc_cv_ld != x; then
6745 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
6746 gcc_cv_ld_sysroot=yes
6749 if test x"$gcc_cv_ld_sysroot" = xyes; then
6750 AC_DEFINE(HAVE_LD_SYSROOT, 1,
6751 [Define if your linker supports --sysroot.])
6756 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
6757 AC_CACHE_CHECK([system-provided CRTs on Solaris],
6758 gcc_cv_solaris_crts,
6759 [gcc_cv_solaris_crts=no
6760 if test x$host != x$target; then
6761 if test "x$with_sysroot" = xyes; then
6762 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
6764 target_sysroot="${with_sysroot}"
6767 target_libdir="$target_sysroot/usr/lib"
6768 # At the time they were added, gcrt1.o became a symlink for backwards
6769 # compatibility on x86, while crt1.o was added on sparc, so check for that.
6771 i?86-*-solaris2* | x86_64-*-solaris2*)
6772 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
6775 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
6780 if test x$gcc_cv_solaris_crts = xyes; then
6781 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
6782 [Define if the system-provided CRTs are present on Solaris.])
6785 AC_ARG_ENABLE(libssp,
6786 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
6787 [case "${enableval}" in
6791 AC_MSG_ERROR([unknown libssp setting $enableval])
6795 # Test for stack protector support in target C library.
6796 AC_CACHE_CHECK(__stack_chk_fail in target C library,
6797 gcc_cv_libc_provides_ssp,
6798 [gcc_cv_libc_provides_ssp=no
6799 if test "x$enable_libssp" = "xno"; then
6800 gcc_cv_libc_provides_ssp=yes
6801 elif test "x$enable_libssp" = "xyes"; then
6802 gcc_cv_libc_provides_ssp=no
6806 # All versions of musl provide stack protector
6807 gcc_cv_libc_provides_ssp=yes;;
6808 *-*-linux* | *-*-kfreebsd*-gnu)
6809 # glibc 2.4 and later provides __stack_chk_fail and
6810 # either __stack_chk_guard, or TLS access to stack guard canary.
6811 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
6812 [if test -f $target_header_dir/features.h \
6813 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
6814 $target_header_dir/features.h > /dev/null; then
6815 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
6816 $target_header_dir/features.h > /dev/null && \
6817 test -f $target_header_dir/bits/uClibc_config.h && \
6818 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
6819 $target_header_dir/bits/uClibc_config.h > /dev/null; then
6820 gcc_cv_libc_provides_ssp=yes
6822 # all versions of Bionic support stack protector
6823 elif test -f $target_header_dir/sys/cdefs.h \
6824 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
6825 $target_header_dir/sys/cdefs.h > /dev/null; then
6826 gcc_cv_libc_provides_ssp=yes
6830 # Avoid complicated tests (see
6831 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
6832 # simply assert that glibc does provide this, which is true for all
6833 # realistically usable GNU/Hurd configurations.
6834 # All supported versions of musl provide it as well
6835 gcc_cv_libc_provides_ssp=yes;;
6836 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
6837 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
6838 [echo "no __stack_chk_fail on this target"])
6840 *) gcc_cv_libc_provides_ssp=no ;;
6844 if test x$gcc_cv_libc_provides_ssp = xyes; then
6845 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
6846 [Define if your target C library provides stack protector support])
6849 # Check whether --enable-default-ssp was given.
6850 AC_ARG_ENABLE(default-ssp,
6851 [AS_HELP_STRING([--enable-default-ssp],
6852 [enable Stack Smashing Protection as default])],[
6853 if test x$gcc_cv_libc_provides_ssp = xyes; then
6855 ia64*-*-*) enable_default_ssp=no ;;
6856 *) enable_default_ssp=$enableval ;;
6859 enable_default_ssp=no
6861 enable_default_ssp=no)
6862 if test x$enable_default_ssp = xyes ; then
6863 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
6864 [Define if your target supports default stack protector and it is enabled.])
6866 AC_SUBST([enable_default_ssp])
6868 # Test for <sys/sdt.h> on the target.
6869 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
6870 AC_MSG_CHECKING(sys/sdt.h in the target C library)
6872 if test -f $target_header_dir/sys/sdt.h; then
6874 AC_DEFINE(HAVE_SYS_SDT_H, 1,
6875 [Define if your target C library provides sys/sdt.h])
6877 AC_MSG_RESULT($have_sys_sdt_h)
6879 # Check if TFmode long double should be used by default or not.
6880 # Some glibc targets used DFmode long double, but with glibc 2.4
6881 # and later they can use TFmode.
6883 powerpc*-*-linux* | \
6887 AC_ARG_WITH(long-double-128,
6888 [AS_HELP_STRING([--with-long-double-128],
6889 [use 128-bit long double by default])],
6890 gcc_cv_target_ldbl128="$with_long_double_128", [
6892 s390*-*-linux-musl*)
6893 gcc_cv_target_ldbl128=yes
6895 powerpc*-*-linux-musl*)
6896 gcc_cv_target_ldbl128=no
6899 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6900 [gcc_cv_target_ldbl128=no
6901 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6902 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6903 && gcc_cv_target_ldbl128=yes
6911 if test x$gcc_cv_target_ldbl128 = xyes; then
6912 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6913 [Define if TFmode long double should be the default])
6916 # Check if TFmode long double target should use the IBM extended double or IEEE
6917 # 128-bit floating point formats if long doubles are 128-bits long. The long
6918 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6919 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6921 AC_ARG_WITH([long-double-format],
6922 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6923 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6924 case "$target:$with_long_double_format" in
6925 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6928 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6929 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6931 power7 | power8 | power9 | power1*)
6935 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6936 supported if the default cpu is power7 or newer])
6937 with_long_double_format=""
6941 powerpc64*-*-linux*:*)
6942 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6943 with_long_double_format=""
6946 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6947 on 64-bit PowerPC VSX Linux systems])
6948 with_long_double_format=""
6953 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6954 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6955 gcc_cv_libc_provides_hwcap_in_tcb=no
6958 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6961 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6962 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6963 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6966 # Check if the target LIBC handles PT_GNU_STACK.
6967 gcc_cv_libc_gnustack=unknown
6970 GCC_GLIBC_VERSION_GTE_IFELSE([2], [31], [gcc_cv_libc_gnustack=yes], )
6973 if test x$gcc_cv_libc_gnustack = xyes; then
6974 AC_DEFINE(TARGET_LIBC_GNUSTACK, 1,
6975 [Define if your target C Library properly handles PT_GNU_STACK])
6978 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6979 gcc_cv_target_dl_iterate_phdr=unknown
6982 # <link.h> needs both a dl_iterate_phdr declaration and support for
6983 # compilation with largefile support.
6984 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6985 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6986 gcc_cv_target_dl_iterate_phdr=yes
6988 gcc_cv_target_dl_iterate_phdr=no
6991 *-*-dragonfly* | *-*-freebsd*)
6992 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6993 gcc_cv_target_dl_iterate_phdr=yes
6995 gcc_cv_target_dl_iterate_phdr=no
6999 gcc_cv_target_dl_iterate_phdr=yes
7002 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
7003 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
7004 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
7005 [Define if your target C library provides the `dl_iterate_phdr' function.])
7007 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
7009 # We no longer support different GC mechanisms. Emit an error if
7010 # the user configures with --with-gc.
7012 [AS_HELP_STRING([--with-gc={page,zone}],
7013 [this option is not supported anymore. It used to choose
7014 the garbage collection mechanism to use with the compiler])],
7015 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
7018 # Libraries to use on the host. This will normally be set by the top
7019 # level Makefile. Here we simply capture the value for our Makefile.
7020 if test -z "${HOST_LIBS+set}"; then
7025 # Use the system's zlib library.
7028 dnl Very limited version of automake's enable-maintainer-mode
7030 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
7031 dnl maintainer-mode is disabled by default
7032 AC_ARG_ENABLE(maintainer-mode,
7033 [AS_HELP_STRING([--enable-maintainer-mode],
7034 [enable make rules and dependencies not useful
7035 (and sometimes confusing) to the casual installer])],
7036 maintainer_mode=$enableval,
7039 AC_MSG_RESULT($maintainer_mode)
7041 if test "$maintainer_mode" = "yes"; then
7048 dnl Whether to prevent multiple front-ends from linking at the same time
7050 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
7051 AC_ARG_ENABLE(link-mutex,
7052 [AS_HELP_STRING([--enable-link-mutex],
7053 [avoid linking multiple front-ends at once to avoid thrashing
7054 on the build machine])],
7055 do_link_mutex=$enableval,
7057 AC_MSG_RESULT($do_link_mutex)
7059 if test "$do_link_mutex" = "yes"; then
7064 AC_SUBST(DO_LINK_MUTEX)
7066 dnl Whether to prevent multiple GCC front-ends from linking at the same time
7068 AC_MSG_CHECKING([whether to serialize linking of multiple front-ends])
7069 AC_ARG_ENABLE(link-serialization,
7070 [AS_HELP_STRING([--enable-link-serialization],
7071 [avoid linking multiple GCC front-ends at once using make
7072 dependencies to avoid thrashing on the build machine])],
7073 do_link_serialization=$enableval,
7074 do_link_serialization=no)
7075 AC_MSG_RESULT($do_link_serialization)
7077 case "$do_link_serialization" in
7079 DO_LINK_SERIALIZATION=1;;
7080 [[1-9]] | [[1-9]][[0-9]] | [[1-9]][[0-9]][[0-9]])
7081 DO_LINK_SERIALIZATION=$do_link_serialization;;
7083 DO_LINK_SERIALIZATION=;;
7085 AC_MSG_ERROR(bad value ${do_link_serialization} given for --enable-link-serialization) ;;
7087 AC_SUBST(DO_LINK_SERIALIZATION)
7093 # Make empty files to contain the specs and options for each language.
7094 # Then add #include lines to for a compiler that has specs and/or options.
7100 # These (without "all_") are set in each config-lang.in.
7101 # `language' must be a single word so is spelled singularly.
7104 all_outputs='Makefile'
7105 # List of language configure and makefile fragments.
7106 all_lang_configurefrags=
7108 # Additional files for gengtype
7109 all_gtfiles="$target_gtfiles"
7111 # These are the languages that are set in --enable-languages,
7112 # and are available in the GCC tree.
7113 all_selected_languages=
7115 # Add the language fragments.
7116 # Languages are added via two mechanisms. Some information must be
7117 # recorded in makefile variables, these are defined in config-lang.in.
7118 # We accumulate them and plug them into the main Makefile.
7119 # The other mechanism is a set of hooks for each of the main targets
7120 # like `clean', `install', etc.
7122 language_hooks="Make-hooks"
7124 for lang in ${srcdir}/*/config-lang.in
7127 test "$lang" = "${srcdir}/*/config-lang.in" && continue
7129 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
7130 if test "x$lang_alias" = x
7132 echo "$lang doesn't set \$language." 1>&2
7135 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
7136 subdirs="$subdirs $subdir"
7138 # $gcc_subdir is where the gcc integration files are to be found
7139 # for a language, both for internal compiler purposes (compiler
7140 # sources implementing front-end to GCC tree converters), and for
7141 # build infrastructure purposes (Make-lang.in, etc.)
7143 # This will be <subdir> (relative to $srcdir) if a line like
7144 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
7145 # is found in <langdir>/config-lang.in, and will remain <langdir>
7148 # Except for the language alias (fetched above), the regular
7149 # "config-lang.in" contents are always retrieved from $gcc_subdir,
7150 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
7151 # only this and the language alias.
7153 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
7154 if [ "$gcc_subdir" = "" ]; then
7155 gcc_subdir="$subdir"
7158 case ",$enable_languages," in
7160 all_selected_languages="$all_selected_languages $lang_alias"
7161 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
7162 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
7174 . ${srcdir}/$gcc_subdir/config-lang.in
7175 if test "x$language" = x
7177 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
7182 case ",$enable_languages," in
7185 for i in $subdir_requires; do
7186 test -f "${srcdir}/$i/config-lang.in" && continue
7194 all_lang_configurefrags="$all_lang_configurefrags \$(srcdir)/$gcc_subdir/config-lang.in"
7195 if test "x$language" = xc && test -n "$all_lang_makefrags"; then
7196 # Put c/Make-lang.in fragment first to match serialization languages order.
7197 all_lang_makefrags="\$(srcdir)/$gcc_subdir/Make-lang.in $all_lang_makefrags"
7199 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
7201 if test -f $srcdir/$gcc_subdir/lang.opt; then
7202 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
7203 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
7205 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
7206 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
7208 all_languages="$all_languages $language"
7209 all_compilers="$all_compilers $compilers"
7210 all_outputs="$all_outputs $outputs"
7211 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
7212 case ",$enable_languages," in
7214 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
7216 AC_SUBST(enable_lto)
7223 for language in $all_selected_languages
7225 check_languages="$check_languages check-$language"
7229 for language in $all_selected_languages
7231 selftest_languages="$selftest_languages selftest-$language"
7234 # We link each language in with a set of hooks, reached indirectly via
7235 # lang.${target}. Only do so for selected languages.
7239 target_list="all.cross start.encap rest.encap tags \
7240 install-common install-man install-info install-pdf install-html dvi \
7241 pdf html uninstall info man srcextra srcman srcinfo \
7242 mostlyclean clean distclean maintainer-clean install-plugin"
7244 for t in $target_list
7247 for lang in $all_selected_languages
7251 echo "lang.$t: $x" >> Make-hooks
7254 echo "ifeq (\$(DO_LINK_SERIALIZATION),)" >> Make-hooks
7255 echo "SERIAL_LIST =" >> Make-hooks
7256 echo else >> Make-hooks
7260 serialization_languages=c
7261 for lang in $all_selected_languages
7263 test $lang = c && continue
7264 if test $lang = lto; then
7265 serialization_languages="$serialization_languages lto1 lto2"
7267 serialization_languages="$serialization_languages $lang"
7270 for lang in $serialization_languages
7272 test $lang = c && continue
7273 lang_cnt=`expr $lang_cnt + 1`
7274 lang_list=" $prev$lang_list"
7277 echo "SERIAL_LIST = \$(wordlist \$(DO_LINK_SERIALIZATION),$lang_cnt,$lang_list)" >> Make-hooks
7278 echo endif >> Make-hooks
7279 echo "SERIAL_COUNT = `expr $lang_cnt + 1`" >> Make-hooks
7280 echo "INDEX.c = 0" >> Make-hooks
7282 for lang in $serialization_languages
7284 test $lang = c && continue
7285 echo "$lang.prev = \$(if \$(word $lang_cnt,\$(SERIAL_LIST)),\$(\$(word $lang_cnt,\$(SERIAL_LIST)).serial))" >> Make-hooks
7286 echo "INDEX.$lang = $lang_idx" >> Make-hooks
7287 lang_cnt=`expr $lang_cnt - 1`
7288 lang_idx=`expr $lang_idx + 1`
7292 # Option include files
7295 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
7296 option_includes="option-includes.mk"
7297 AC_SUBST_FILE(option_includes)
7305 echo "dir ." > .gdbinit
7306 echo "dir ${srcdir}" >> .gdbinit
7307 if test x$gdb_needs_out_file_path = xyes
7309 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
7311 if test "x$subdirs" != x; then
7314 echo "dir ${srcdir}/$s" >> .gdbinit
7317 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
7318 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
7320 # Put a breakpoint on __asan_report_error to help with debugging buffer
7323 *-fsanitize=address*)
7324 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
7328 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
7329 AC_SUBST(gcc_tooldir)
7332 # Find a directory in which to install a shared libgcc.
7334 AC_ARG_ENABLE(version-specific-runtime-libs,
7335 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
7336 [specify that runtime libraries should be
7337 installed in a compiler-specific directory])])
7339 # Substitute configuration variables
7342 AC_SUBST(all_compilers)
7343 AC_SUBST(all_gtfiles)
7344 AC_SUBST(all_lang_configurefrags)
7345 AC_SUBST(all_lang_makefrags)
7346 AC_SUBST(all_languages)
7347 AC_SUBST(all_selected_languages)
7348 AC_SUBST(build_exeext)
7349 AC_SUBST(build_install_headers_dir)
7350 AC_SUBST(build_xm_file_list)
7351 AC_SUBST(build_xm_include_list)
7352 AC_SUBST(build_xm_defines)
7353 AC_SUBST(build_file_translate)
7354 AC_SUBST(check_languages)
7355 AC_SUBST(selftest_languages)
7356 AC_SUBST(cpp_install_dir)
7357 AC_SUBST(xmake_file)
7358 AC_SUBST(tmake_file)
7359 AC_SUBST(TM_ENDIAN_CONFIG)
7360 AC_SUBST(TM_MULTILIB_CONFIG)
7361 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
7362 AC_SUBST(extra_gcc_objs)
7363 AC_SUBST(user_headers_inc_next_pre)
7364 AC_SUBST(user_headers_inc_next_post)
7365 AC_SUBST(extra_headers_list)
7366 AC_SUBST(extra_objs)
7367 AC_SUBST(extra_programs)
7368 AC_SUBST(float_h_file)
7369 AC_SUBST(gcc_config_arguments)
7370 AC_SUBST(gcc_gxx_include_dir)
7371 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
7372 AC_SUBST(gcc_gxx_libcxx_include_dir)
7373 AC_SUBST(gcc_gxx_libcxx_include_dir_add_sysroot)
7374 AC_SUBST(host_exeext)
7375 AC_SUBST(host_xm_file_list)
7376 AC_SUBST(host_xm_include_list)
7377 AC_SUBST(host_xm_defines)
7378 AC_SUBST(out_host_hook_obj)
7380 AC_SUBST(lang_opt_files)
7381 AC_SUBST(lang_specs_files)
7382 AC_SUBST(lang_tree_files)
7383 AC_SUBST(local_prefix)
7385 AC_SUBST(objc_boehm_gc)
7387 AC_SUBST(out_object_file)
7388 AC_SUBST(common_out_file)
7389 AC_SUBST(common_out_object_file)
7390 AC_SUBST(tm_file_list)
7391 AC_SUBST(tm_include_list)
7392 AC_SUBST(tm_defines)
7393 AC_SUBST(tm_p_file_list)
7394 AC_SUBST(tm_p_include_list)
7395 AC_SUBST(tm_d_file_list)
7396 AC_SUBST(tm_d_include_list)
7397 AC_SUBST(xm_file_list)
7398 AC_SUBST(xm_include_list)
7399 AC_SUBST(xm_defines)
7400 AC_SUBST(use_gcc_stdint)
7401 AC_SUBST(c_target_objs)
7402 AC_SUBST(cxx_target_objs)
7403 AC_SUBST(fortran_target_objs)
7404 AC_SUBST(d_target_objs)
7405 AC_SUBST(target_cpu_default)
7407 AC_SUBST_FILE(language_hooks)
7410 if test x${build} = x${host} ; then
7411 if test x${host} = x${target} ; then
7412 echo "Links are now set up to build a native compiler for ${target}." 1>&2
7414 echo "Links are now set up to build a cross-compiler" 1>&2
7415 echo " from ${host} to ${target}." 1>&2
7418 if test x${host} = x${target} ; then
7419 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
7420 echo " for ${target}." 1>&2
7422 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
7423 echo " from ${host} to ${target}." 1>&2
7427 AC_ARG_VAR(GMPLIBS,[How to link GMP])
7428 AC_ARG_VAR(GMPINC,[How to find GMP include files])
7430 AC_ARG_VAR(ISLLIBS,[How to link isl])
7431 AC_ARG_VAR(ISLINC,[How to find isl include files])
7432 if test "x${ISLLIBS}" != "x" ; then
7433 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
7437 AC_SUBST(pluginlibs)
7438 AC_SUBST(enable_plugin)
7439 if test x"$enable_plugin" = x"yes"; then
7440 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
7444 # Enable --enable-host-shared
7445 AC_ARG_ENABLE(host-shared,
7446 [AS_HELP_STRING([--enable-host-shared],
7447 [build host code as shared libraries])],
7448 [PICFLAG=-fPIC], [PICFLAG=])
7449 AC_SUBST(enable_host_shared)
7453 AC_ARG_ENABLE(libquadmath-support,
7454 [AS_HELP_STRING([--disable-libquadmath-support],
7455 [disable libquadmath support for Fortran])],
7456 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
7457 ENABLE_LIBQUADMATH_SUPPORT=yes)
7458 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
7459 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
7460 [Define to 1 to enable libquadmath support])
7464 # Specify what hash style to use by default.
7465 AC_ARG_WITH([linker-hash-style],
7466 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
7467 [specify the linker hash style])],
7468 [case x"$withval" in
7470 LINKER_HASH_STYLE=sysv
7473 LINKER_HASH_STYLE=gnu
7476 LINKER_HASH_STYLE=both
7479 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
7482 [LINKER_HASH_STYLE=''])
7483 if test x"${LINKER_HASH_STYLE}" != x; then
7484 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
7485 [The linker hash style])
7488 # Specify what should be the default of -fdiagnostics-color option.
7489 AC_ARG_WITH([diagnostics-color],
7490 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
7491 [specify the default of -fdiagnostics-color option
7492 auto-if-env stands for -fdiagnostics-color=auto if
7493 GCC_COLOR environment variable is present and
7494 -fdiagnostics-color=never otherwise])],
7495 [case x"$withval" in
7497 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
7500 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
7503 DIAGNOSTICS_COLOR_DEFAULT=-1
7506 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
7509 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
7512 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
7513 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
7514 [The default for -fdiagnostics-color option])
7516 # Specify what should be the default of -fdiagnostics-urls option.
7517 AC_ARG_WITH([diagnostics-urls],
7518 [AC_HELP_STRING([--with-diagnostics-urls={never,auto,auto-if-env,always}],
7519 [specify the default of -fdiagnostics-urls option
7520 auto-if-env stands for -fdiagnostics-urls=auto if
7521 GCC_URLS or TERM_URLS environment variable is present and
7522 -fdiagnostics-urls=never otherwise])],
7523 [case x"$withval" in
7525 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_NO
7528 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO
7531 DIAGNOSTICS_URLS_DEFAULT=-1
7534 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_YES
7537 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-urls])
7540 [DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO])
7541 AC_DEFINE_UNQUOTED(DIAGNOSTICS_URLS_DEFAULT, $DIAGNOSTICS_URLS_DEFAULT,
7542 [The default for -fdiagnostics-urls option])
7544 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
7545 # of jit/jit-playback.c.
7546 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
7547 echo "gcc_driver_version: ${gcc_driver_version}"
7548 cat > gcc-driver-name.h <<EOF
7549 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
7552 # Check whether --enable-default-pie was given.
7553 AC_ARG_ENABLE(default-pie,
7554 [AS_HELP_STRING([--enable-default-pie],
7555 [enable Position Independent Executable as default])],
7556 enable_default_pie=$enableval,
7557 enable_default_pie=no)
7558 if test x$enable_default_pie = xyes ; then
7559 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
7560 [Define if your target supports default PIE and it is enabled.])
7562 AC_SUBST([enable_default_pie])
7564 # Check if -fno-PIE works.
7565 AC_CACHE_CHECK([for -fno-PIE option],
7567 [saved_CXXFLAGS="$CXXFLAGS"
7568 CXXFLAGS="$CXXFLAGS -fno-PIE"
7569 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7570 [gcc_cv_c_no_fpie=yes],
7571 [gcc_cv_c_no_fpie=no])
7572 CXXFLAGS="$saved_CXXFLAGS"])
7573 if test "$gcc_cv_c_no_fpie" = "yes"; then
7574 NO_PIE_CFLAGS="-fno-PIE"
7576 AC_SUBST([NO_PIE_CFLAGS])
7578 # Check if -no-pie works.
7579 AC_CACHE_CHECK([for -no-pie option],
7581 [saved_LDFLAGS="$LDFLAGS"
7582 LDFLAGS="$LDFLAGS -no-pie"
7583 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7584 [gcc_cv_no_pie=yes],
7586 LDFLAGS="$saved_LDFLAGS"])
7587 if test "$gcc_cv_no_pie" = "yes"; then
7588 NO_PIE_FLAG="-no-pie"
7590 AC_SUBST([NO_PIE_FLAG])
7592 # Enable Intel CET on Intel CET enabled host if jit is enabled.
7593 GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
7594 case x$enable_languages in
7601 AC_SUBST(CET_HOST_FLAGS)
7603 # Check linker supports '-z bndplt'
7604 ld_bndplt_support=no
7605 AC_MSG_CHECKING(linker -z bndplt option)
7606 if test x"$ld_is_gold" = xno; then
7607 if test $in_tree_ld = yes ; then
7608 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7609 ld_bndplt_support=yes
7611 elif test x$gcc_cv_ld != x; then
7612 # Check if linker supports -a bndplt option
7613 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
7614 ld_bndplt_support=yes
7618 if test x"$ld_bndplt_support" = xyes; then
7619 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
7620 [Define if your linker supports -z bndplt])
7622 AC_MSG_RESULT($ld_bndplt_support)
7624 # Check linker supports '--push-state'/'--pop-state'
7625 ld_pushpopstate_support=no
7626 AC_MSG_CHECKING(linker --push-state/--pop-state options)
7627 if test x"$ld_is_gold" = xno; then
7628 if test $in_tree_ld = yes ; then
7629 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7630 ld_pushpopstate_support=yes
7632 elif test x$gcc_cv_ld != x; then
7633 # Check if linker supports --push-state/--pop-state options
7634 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
7635 ld_pushpopstate_support=yes
7639 if test x"$ld_pushpopstate_support" = xyes; then
7640 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
7641 [Define if your linker supports --push-state/--pop-state])
7643 AC_MSG_RESULT($ld_pushpopstate_support)
7645 # On s390, float_t has historically been statically defined as double for no
7646 # good reason. To comply with the C standard in the light of this definition,
7647 # gcc has evaluated float expressions in double precision when in
7648 # standards-compatible mode or when given -fexcess-precision=standard. To enable
7649 # a smooth transition towards the new model used by most architectures, where
7650 # gcc describes its behavior via the macro __FLT_EVAL_METHOD__ and glibc derives
7651 # float_t from that, this behavior can be configured with
7652 # --enable-s390-excess-float-precision. When given as enabled, that flag selects
7653 # the old model. When omitted, native builds and cross compiles that have target
7654 # libc headers will detect whether libc clamps float_t to double and in that
7655 # case maintain the old model. Otherwise, they will default to the new model.
7656 AC_ARG_ENABLE(s390-excess-float-precision,
7657 [AS_HELP_STRING([--enable-s390-excess-float-precision],
7658 [on s390 targets, evaluate float with double precision
7659 when in standards-conforming mode])],
7660 [],[enable_s390_excess_float_precision=auto])
7664 if test x"$enable_s390_excess_float_precision" = xauto; then
7665 # Can we autodetect the behavior of the target libc?
7666 if test "$target" = "$host" -a "$host" = "$build"; then
7667 enable_s390_excess_float_precision=autodetect
7668 elif test "x$with_headers" != xno; then
7669 # cross build. are target headers available?
7670 # carefully coerce the build-system compiler to use target headers
7671 saved_CXXFLAGS="$CXXFLAGS"
7672 fixed_XGCC_FLAGS_FOR_TARGET=`echo "$XGCC_FLAGS_FOR_TARGET" | sed 's/-B/-idirafter/g'`
7673 CROSS_TEST_CXXFLAGS="-nostdinc $fixed_XGCC_FLAGS_FOR_TARGET"
7674 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7675 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7677 ]])], [enable_s390_excess_float_precision=autodetect], [])
7678 CXXFLAGS="$saved_CXXFLAGS"
7681 if test x"$enable_s390_excess_float_precision" = xautodetect; then
7682 saved_CXXFLAGS="$CXXFLAGS"
7683 if ! test "$target" = "$host" -a "$host" = "$build"; then
7684 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7685 unset CROSS_TEST_CXXFLAGS
7687 AC_CACHE_CHECK([for glibc clamping float_t to double],
7688 gcc_cv_float_t_clamped_to_double, [
7689 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7690 #define __FLT_EVAL_METHOD__ 0
7692 int dummy[sizeof(float_t) == sizeof(double) ? 1 : -1];
7694 [gcc_cv_float_t_clamped_to_double=yes],
7695 [gcc_cv_float_t_clamped_to_double=no])])
7696 CXXFLAGS="$saved_CXXFLAGS"
7697 enable_s390_excess_float_precision="$gcc_cv_float_t_clamped_to_double"
7699 # no way to detect behavior of target libc, default to new model
7700 enable_s390_excess_float_precision=no
7704 GCC_TARGET_TEMPLATE(ENABLE_S390_EXCESS_FLOAT_PRECISION)
7705 if test x"$enable_s390_excess_float_precision" = xyes; then
7706 AC_DEFINE(ENABLE_S390_EXCESS_FLOAT_PRECISION, 1,
7707 [Define to enable evaluating float expressions with double precision in
7708 standards-compatible mode on s390 targets.])
7713 # Configure the subdirectories
7714 # AC_CONFIG_SUBDIRS($subdirs)
7716 # Create the Makefile
7717 # and configure language subdirectories
7718 AC_CONFIG_FILES($all_outputs)
7720 AC_CONFIG_COMMANDS([default],
7722 case ${CONFIG_HEADERS} in
7723 *auto-host.h:config.in*)
7726 # Make sure all the subdirs exist.
7727 for d in $subdirs doc build common c-family
7729 test -d $d || mkdir $d
7732 [subdirs='$subdirs'])