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 $gcc_cv_header_valgrind_memcheck_h = no); then
838 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
840 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
841 [Define to get calls to the valgrind runtime enabled.])
844 # -------------------------------
845 # Miscenalleous configure options
846 # -------------------------------
848 # Determine whether or not multilibs are enabled.
849 AC_ARG_ENABLE(multilib,
850 [AS_HELP_STRING([--enable-multilib],
851 [enable library support for multiple ABIs])],
852 [], [enable_multilib=yes])
853 AC_SUBST(enable_multilib)
855 # Determine whether or not multiarch is enabled.
856 AC_ARG_ENABLE(multiarch,
857 [AS_HELP_STRING([--enable-multiarch],
858 [enable support for multiarch paths])],
859 [case "${enableval}" in
860 yes|no|auto) enable_multiarch=$enableval;;
861 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
862 esac], [enable_multiarch=auto])
863 if test x${enable_multiarch} = xauto; then
864 if test x${with_native_system_header_dir} != x; then
865 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
868 if test x$host != x$target && test "x$with_sysroot" = x; then
869 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
873 AC_MSG_CHECKING(for multiarch configuration)
874 AC_SUBST(enable_multiarch)
875 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
877 # needed for setting the multiarch name for soft-float/hard-float ABIs
881 # default stack clash protection guard size as power of twos in bytes.
882 # Please keep these in sync with params.def.
886 # Keep the default value when the option is not used to 0, this allows us to
887 # distinguish between the cases where the user specifially set a value via
888 # configure and when the normal default value is used.
889 AC_ARG_WITH(stack-clash-protection-guard-size,
890 [AS_HELP_STRING([--with-stack-clash-protection-guard-size=size],
891 [Set the default stack clash protection guard size for specific targets as a power of two in bytes.])],
892 [DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size"], [DEFAULT_STK_CLASH_GUARD_SIZE=0])
893 if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \
894 && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \
895 || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then
896 AC_MSG_ERROR(m4_normalize([
897 Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. \
898 Must be between $stk_clash_min and $stk_clash_max.]))
901 AC_DEFINE_UNQUOTED(DEFAULT_STK_CLASH_GUARD_SIZE, $DEFAULT_STK_CLASH_GUARD_SIZE,
902 [Define to larger than zero set the default stack clash protector size.])
904 # Enable __cxa_atexit for C++.
905 AC_ARG_ENABLE(__cxa_atexit,
906 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
909 # Enable C extension for decimal float if target supports it.
910 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
912 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
913 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
914 [Define to 1 to enable decimal float extension to C.])
916 # Use default_decimal_float for dependency.
917 enable_decimal_float=$default_decimal_float
919 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
920 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
921 [Define to 1 to specify that we are using the BID decimal floating
922 point format instead of DPD])
924 # Enable C extension for fixed-point arithmetic.
925 AC_ARG_ENABLE(fixed-point,
926 [AS_HELP_STRING([--enable-fixed-point],
927 [enable fixed-point arithmetic extension to C])],
932 enable_fixed_point=yes
936 enable_fixed_point=yes
939 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
940 enable_fixed_point=no
944 AC_SUBST(enable_fixed_point)
946 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
947 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
948 [Define to 1 to enable fixed-point arithmetic extension to C.])
951 # Pass with no value to take the default
952 # Pass with a value to specify a thread package
953 AC_ARG_ENABLE(threads,
954 [AS_HELP_STRING([[--enable-threads[=LIB]]],
955 [enable thread usage for target GCC,
956 using LIB thread package])],,
960 [AS_HELP_STRING([--enable-tls],
961 [enable or disable generation of tls code
962 overriding the assembler check for tls support])],
966 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
967 Valid choices are 'yes' and 'no'.]) ;;
971 AC_ARG_ENABLE(vtable-verify,
972 [AS_HELP_STRING([--enable-vtable-verify],
973 [enable vtable verification feature])],,
974 [enable_vtable_verify=no])
975 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
976 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
977 [Define 0/1 if vtable verification feature is enabled.])
979 AC_ARG_ENABLE(analyzer,
980 [AS_HELP_STRING([--disable-analyzer],
981 [disable -fanalyzer static analyzer])],
982 if test x$enable_analyzer = xno; then
988 AC_DEFINE_UNQUOTED(ENABLE_ANALYZER, $analyzer,
989 [Define 0/1 if static analyzer feature is enabled.])
991 AC_ARG_ENABLE(objc-gc,
992 [AS_HELP_STRING([--enable-objc-gc],
993 [enable the use of Boehm's garbage collector with
994 the GNU Objective-C runtime])],
995 if test x$enable_objc_gc = xno; then
1003 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
1004 dwarf2="$with_dwarf2",
1007 AC_ARG_ENABLE(shared,
1008 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
1010 case $enable_shared in
1014 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
1015 for pkg in $enableval; do
1016 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
1023 ], [enable_shared=yes])
1024 AC_SUBST(enable_shared)
1027 [ --disable-gcov don't provide libgcov and related host tools],
1028 [], [enable_gcov=yes])
1029 AC_SUBST(enable_gcov)
1032 [AS_HELP_STRING([--with-specs=SPECS],
1033 [add SPECS to driver command-line processing])],
1034 [CONFIGURE_SPECS=$withval],
1037 AC_SUBST(CONFIGURE_SPECS)
1039 ACX_PKGVERSION([GCC])
1040 ACX_BUGURL([https://gcc.gnu.org/bugs/])
1042 # Allow overriding the default URL for documentation
1043 AC_ARG_WITH(documentation-root-url,
1044 AS_HELP_STRING([--with-documentation-root-url=URL],
1045 [Root for documentation URLs]),
1047 yes) AC_MSG_ERROR([documentation root URL not specified]) ;;
1048 no) AC_MSG_ERROR([documentation root URL not specified]) ;;
1049 */) DOCUMENTATION_ROOT_URL="$withval" ;;
1050 *) AC_MSG_ERROR([documentation root URL does not end with /]) ;;
1052 DOCUMENTATION_ROOT_URL="https://gcc.gnu.org/onlinedocs/"
1054 AC_DEFINE_UNQUOTED(DOCUMENTATION_ROOT_URL,"$DOCUMENTATION_ROOT_URL",
1055 [Define to the root for documentation URLs.])
1057 # Allow overriding the default URL for GCC changes
1058 AC_ARG_WITH(changes-root-url,
1059 AS_HELP_STRING([--with-changes-root-url=URL],
1060 [Root for GCC changes URLs]),
1062 yes) AC_MSG_ERROR([changes root URL not specified]) ;;
1063 no) AC_MSG_ERROR([changes root URL not specified]) ;;
1064 */) CHANGES_ROOT_URL="$withval" ;;
1065 *) AC_MSG_ERROR([changes root URL does not end with /]) ;;
1067 CHANGES_ROOT_URL="https://gcc.gnu.org/"
1069 AC_DEFINE_UNQUOTED(CHANGES_ROOT_URL,"$CHANGES_ROOT_URL",
1070 [Define to the root for URLs about GCC changes.])
1072 # Sanity check enable_languages in case someone does not run the toplevel
1073 # configure # script.
1074 AC_ARG_ENABLE(languages,
1075 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
1076 [case ,${enable_languages}, in
1078 # go safe -- we cannot be much sure without the toplevel
1080 # analysis of which target libs are present and usable
1084 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
1089 enable_languages=c,${enable_languages}
1092 [enable_languages=c])
1094 # If top-level libada has been disabled, then wire in install-gnatlib
1095 # invocation with `make install', so that one can build and install
1096 # the library manually with `make -C gcc all gnatlib gnattools install'.
1097 if test x"$enable_libada" = xno; then
1098 gnat_install_lib=gnat-install-lib
1102 AC_SUBST(gnat_install_lib)
1104 if test x"$enable_as_accelerator_for" != x; then
1105 AC_DEFINE(ACCEL_COMPILER, 1,
1106 [Define if this compiler should be built as the offload target compiler.])
1107 enable_as_accelerator=yes
1110 # In this case we expect offload compiler to be built as native, so we
1111 # need to rename the driver to avoid clashes with host's drivers.
1112 program_transform_name="s&^&${target}-&" ;;
1114 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
1115 program_transform_name=`echo $program_transform_name | sed $sedscript`
1116 accel_dir_suffix=/accel/${target_noncanonical}
1117 real_target_noncanonical=${enable_as_accelerator_for}
1119 AC_SUBST(enable_as_accelerator)
1120 AC_SUBST(real_target_noncanonical)
1121 AC_SUBST(accel_dir_suffix)
1123 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
1124 tgt=`echo $tgt | sed 's/=.*//'`
1128 *-intelmic-* | *-intelmicemul-*)
1129 omp_device_property=omp-device-properties-i386
1130 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/i386/t-omp-device"
1133 omp_device_property=omp-device-properties-gcn
1134 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/gcn/t-omp-device"
1137 omp_device_property=omp-device-properties-nvptx
1138 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/nvptx/t-omp-device"
1141 AC_MSG_ERROR([unknown offload target specified])
1144 omp_device_properties="${omp_device_properties} ${tgt}=${omp_device_property}"
1145 omp_device_property_deps="${omp_device_property_deps} ${omp_device_property}"
1147 if test x"$offload_targets" = x; then
1148 offload_targets=$tgt
1150 offload_targets="$offload_targets,$tgt"
1153 AC_SUBST(omp_device_properties)
1154 AC_SUBST(omp_device_property_deps)
1156 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
1157 [Define to offload targets, separated by commas.])
1158 if test x"$enable_offloading" != x; then
1159 AC_DEFINE(ENABLE_OFFLOADING, 1,
1160 [Define this to enable support for offloading.])
1162 AC_DEFINE(ENABLE_OFFLOADING, 0,
1163 [Define this to enable support for offloading.])
1166 if test "x$enable_offload_defaulted" = xyes; then
1167 AC_DEFINE(OFFLOAD_DEFAULTED, 1,
1168 [Define to 1 to if -foffload is defaulted])
1171 AC_ARG_WITH(multilib-list,
1172 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, ARM, OR1K, RISC-V, SH and x86-64 only)])],
1174 with_multilib_list=default)
1176 AC_ARG_WITH(multilib-generator,
1177 [AS_HELP_STRING([--with-multilib-generator], [Multi-libs configuration string (RISC-V only)])],
1179 with_multilib_generator=default)
1181 # -------------------------
1182 # Checks for other programs
1183 # -------------------------
1187 # Find some useful tools
1189 # We need awk to create options.c and options.h.
1190 # Bail out if it's missing.
1192 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1199 AC_SUBST(ranlib_flags)
1203 # See if cmp has --ignore-initial.
1204 gcc_AC_PROG_CMP_IGNORE_INITIAL
1206 # See if we have the mktemp command.
1207 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1209 # See if makeinfo has been installed and is modern enough
1210 # that we can use it.
1211 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1212 [GNU texinfo.* \([0-9][0-9.]*\)],
1213 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1214 if test $gcc_cv_prog_makeinfo_modern = no; then
1216 *** Makeinfo is missing or too old.
1217 *** Info documentation will not be built.])
1222 AC_SUBST(BUILD_INFO)
1224 # Is pod2man recent enough to regenerate manpages?
1225 AC_MSG_CHECKING([for recent Pod::Man])
1226 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1228 GENERATED_MANPAGES=generated-manpages
1233 AC_SUBST(GENERATED_MANPAGES)
1235 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1238 dnl Don't use AC_PROG_LEX; we insist on flex.
1239 dnl LEXLIB is not useful in gcc.
1240 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1243 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1245 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1246 # check for build == host before using them.
1249 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1250 && test -d ../binutils ; then
1251 NM='${objdir}/../binutils/nm-new'
1253 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1257 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1258 && test -d ../binutils ; then
1259 AR='${objdir}/../binutils/ar'
1261 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1264 # The jit documentation looks better if built with sphinx, but can be
1265 # built with texinfo if sphinx is not available.
1266 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1267 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1269 # --------------------
1270 # Checks for C headers
1271 # --------------------
1273 # Need to reject headers which give warnings, so that the -Werror bootstrap
1274 # works later. *sigh* This needs to come before all header checks.
1281 AC_HEADER_TIOCGWINSZ
1282 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1283 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1284 sys/resource.h sys/param.h sys/times.h sys/stat.h sys/locking.h \
1285 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1287 # Check for thread headers.
1288 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1289 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1291 # These tests can't be done till we know if we have limits.h.
1295 # ----------------------
1296 # Checks for C++ headers
1297 # ----------------------
1299 dnl Autoconf will give an error in the configure script if there is no
1300 dnl C++ preprocessor. Hack to prevent that.
1301 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1303 m4_popdef([AC_MSG_ERROR])[]dnl
1305 AC_CHECK_HEADERS(unordered_map)
1306 AC_CHECK_HEADERS(tr1/unordered_map)
1307 AC_CHECK_HEADERS(ext/hash_map)
1310 # Dependency checking.
1314 AC_CONFIG_COMMANDS([gccdepdir],[
1315 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1316 for lang in $subdirs c-family common analyzer rtl-ssa
1318 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1319 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1321 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1328 # These libraries may be used by collect2.
1329 # We may need a special search path to get them linked.
1330 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1332 for libs in '' -lld -lmld \
1333 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1334 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1337 AC_TRY_LINK_FUNC(ldopen,
1338 [gcc_cv_collect2_libs="$libs"; break])
1341 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1342 case $gcc_cv_collect2_libs in
1344 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1346 AC_SUBST(COLLECT2_LIBS)
1348 # When building Ada code on Alpha, we need exc_resume which is usually in
1349 # -lexc. So test for it.
1352 AC_SEARCH_LIBS(exc_resume, exc)
1355 AC_SUBST(GNAT_LIBEXC)
1357 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1360 AC_SEARCH_LIBS(kstat_open, kstat)
1361 EXTRA_GCC_LIBS="$LIBS"
1363 AC_SUBST(EXTRA_GCC_LIBS)
1365 # Solaris needs libsocket and libnsl for socket functions before 11.4.
1366 # C++ needs those for libcody.
1374 # Some systems put ldexp and frexp in libm instead of libc; assume
1375 # they're both in the same place. jcf-dump needs them.
1378 AC_SEARCH_LIBS(ldexp, m)
1383 # Some systems need dlopen
1386 AC_SEARCH_LIBS(dlopen, dl)
1391 # Use <inttypes.h> only if it exists,
1392 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1394 AC_MSG_CHECKING(for inttypes.h)
1395 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1396 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1397 [[#define __STDC_FORMAT_MACROS
1398 #include <sys/types.h>
1399 #include <inttypes.h>]],
1404 [gcc_cv_header_inttypes_h=yes],
1405 [gcc_cv_header_inttypes_h=no])])
1406 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1407 if test $gcc_cv_header_inttypes_h = yes; then
1408 AC_DEFINE(HAVE_INTTYPES_H, 1,
1409 [Define if you have a working <inttypes.h> header file.])
1412 # Look for the ZSTD package.
1415 AC_SUBST(ZSTD_INCLUDE)
1419 AC_SUBST(ZSTD_CPPFLAGS)
1420 AC_SUBST(ZSTD_LDFLAGS)
1422 [AS_HELP_STRING([--with-zstd=PATH],
1423 [specify prefix directory for installed zstd library.
1424 Equivalent to --with-zstd-include=PATH/include
1425 plus --with-zstd-lib=PATH/lib])])
1426 AC_ARG_WITH(zstd-include,
1427 [AS_HELP_STRING([--with-zstd-include=PATH],
1428 [specify directory for installed zstd include files])])
1429 AC_ARG_WITH(zstd-lib,
1430 [AS_HELP_STRING([--with-zstd-lib=PATH],
1431 [specify directory for the installed zstd library])])
1432 case "x$with_zstd" in
1438 *) ZSTD_INCLUDE=$with_zstd/include
1439 ZSTD_LIB=$with_zstd/lib
1443 if test "x$with_zstd" != xno; then
1444 if test "x$with_zstd_include" != x; then
1445 ZSTD_INCLUDE=$with_zstd_include
1447 if test "x$with_zstd_lib" != x; then
1448 ZSTD_LIB=$with_zstd_lib
1450 if test "x$ZSTD_INCLUDE" != x \
1451 && test "x$ZSTD_INCLUDE" != xno; then
1452 ZSTD_CPPFLAGS=-I$ZSTD_INCLUDE
1454 if test "x$ZSTD_LIB" != x \
1455 && test "x$ZSTD_LIB" != xno; then
1456 ZSTD_LDFLAGS=-L$ZSTD_LIB
1459 CXXFLAGS="$CXXFLAGS $ZSTD_CPPFLAGS"
1460 LDFLAGS="$LDFLAGS $ZSTD_LDFLAGS"
1462 AC_MSG_CHECKING(for zstd.h)
1463 AC_CACHE_VAL(gcc_cv_header_zstd_h,
1464 # We require version 1.3.0 or later. This is the first version that has
1465 # ZSTD_getFrameContentSize.
1466 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1468 #if ZSTD_VERSION_NUMBER < 10300
1469 #error "need zstd 1.3.0 or better"
1471 [gcc_cv_header_zstd_h=yes],
1472 [gcc_cv_header_zstd_h=no])])
1473 AC_MSG_RESULT($gcc_cv_header_zstd_h)
1474 if test $gcc_cv_header_zstd_h = yes; then
1475 AC_DEFINE(HAVE_ZSTD_H, 1,
1476 [Define if you have a working <zstd.h> header file.])
1477 elif test "x$with_zstd" != x; then
1478 as_fn_error $? "Unable to find zstd.h. See config.log for details." "$LINENO" 5
1481 # LTO can use zstd compression algorithm
1484 AC_SEARCH_LIBS(ZSTD_compress, zstd)
1490 dnl Disabled until we have a complete test for buggy enum bitfields.
1491 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1493 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1494 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1495 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1496 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1497 putchar_unlocked putc_unlocked)
1498 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1499 popen sysconf strsignal getrusage nl_langinfo \
1500 gettimeofday mbstowcs wcswidth mmap posix_fallocate setlocale \
1501 gcc_UNLOCKED_FUNCS madvise mallinfo mallinfo2 fstatat)
1503 if test x$ac_cv_func_mbstowcs = xyes; then
1504 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1505 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1511 [gcc_cv_func_mbstowcs_works=yes],
1512 [gcc_cv_func_mbstowcs_works=no],
1513 [gcc_cv_func_mbstowcs_works=yes])])
1514 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1515 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1516 [Define this macro if mbstowcs does not crash when its
1517 first argument is NULL.])
1521 AC_CHECK_TYPE(ssize_t, int)
1522 AC_CHECK_TYPE(caddr_t, char *)
1523 AC_CHECK_TYPE(sighander_t,
1524 AC_DEFINE(HAVE_SIGHANDLER_T, 1,
1525 [Define if <sys/signal.h> defines sighandler_t]),
1528 GCC_AC_FUNC_MMAP_BLACKLIST
1532 # Under VMS, vfork works very differently than on Unix. The standard test
1533 # won't work, and it isn't easily adaptable. It makes more sense to
1535 ac_cv_func_vfork_works=yes
1542 # Until we have in-tree GNU iconv:
1544 if test -f "$LTLIBICONV"; then
1545 LIBICONV_DEP=$LTLIBICONV
1547 AC_SUBST(LIBICONV_DEP)
1553 # We will need to find libiberty.h and ansidecl.h
1554 saved_CFLAGS="$CFLAGS"
1555 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1556 saved_CXXFLAGS="$CXXFLAGS"
1557 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1559 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1560 # normal autoconf function for these. But force definition of
1561 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1562 # basename handling in libiberty.h.
1563 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1564 #undef HAVE_DECL_BASENAME
1565 #define HAVE_DECL_BASENAME 1
1566 #include "ansidecl.h"
1567 #include "system.h"])
1569 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1570 madvise stpcpy strnlen strsignal strverscmp \
1571 strtol strtoul strtoll strtoull setenv unsetenv \
1572 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1573 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1574 #include "ansidecl.h"
1575 #include "system.h"])
1577 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1578 #include "ansidecl.h"
1580 #ifdef HAVE_SYS_RESOURCE_H
1581 #include <sys/resource.h>
1585 gcc_AC_CHECK_DECLS(mallinfo mallinfo2, , ,[
1586 #include "ansidecl.h"
1588 #ifdef HAVE_MALLOC_H
1593 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1594 #include "ansidecl.h"
1596 #ifdef HAVE_SYS_RESOURCE_H
1597 #include <sys/resource.h>
1599 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1600 [Define to `long' if <sys/resource.h> doesn't define.])])
1602 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1603 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1604 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1605 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1606 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1607 #include "ansidecl.h"
1616 gcc_AC_CHECK_DECLS(times, , ,[
1617 #include "ansidecl.h"
1619 #ifdef HAVE_SYS_TIMES_H
1620 #include <sys/times.h>
1624 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1625 #include "ansidecl.h"
1630 # More time-related stuff.
1631 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1632 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1633 #include "ansidecl.h"
1635 #ifdef HAVE_SYS_TIMES_H
1636 #include <sys/times.h>
1638 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1639 if test $ac_cv_struct_tms = yes; then
1640 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1641 [Define if <sys/times.h> defines struct tms.])
1644 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1645 # revisit after autoconf 2.50.
1646 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1647 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1648 #include "ansidecl.h"
1650 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1651 if test $gcc_cv_type_clock_t = yes; then
1652 AC_DEFINE(HAVE_CLOCK_T, 1,
1653 [Define if <time.h> defines clock_t.])
1656 # Check if F_SETLKW is supported by fcntl.
1657 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1658 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1659 #include <fcntl.h>]], [[
1665 return fcntl (1, F_SETLKW, &fl);]])],
1666 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1667 if test $ac_cv_f_setlkw = yes; then
1668 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1669 [Define if F_SETLKW supported by fcntl.])
1672 # Check if O_CLOEXEC is defined by fcntl
1673 AC_CACHE_CHECK(for O_CLOEXEC, ac_cv_o_cloexec, [
1674 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1675 #include <fcntl.h>]], [[
1676 return open ("/dev/null", O_RDONLY | O_CLOEXEC);]])],
1677 [ac_cv_o_cloexec=yes],[ac_cv_o_cloexec=no])])
1678 if test $ac_cv_o_cloexec = yes; then
1679 AC_DEFINE(HOST_HAS_O_CLOEXEC, 1,
1680 [Define if O_CLOEXEC supported by fcntl.])
1683 # C++ Modules would like some networking features to provide the mapping
1684 # server. You can still use modules without them though.
1685 # The following network-related checks could probably do with some
1686 # Windows and other non-linux defenses and checking.
1688 # Local socket connectivity wants AF_UNIX networking
1689 # Check for AF_UNIX networking
1690 AC_CACHE_CHECK(for AF_UNIX, ac_cv_af_unix, [
1691 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1692 #include <sys/types.h>
1693 #include <sys/socket.h>
1695 #include <netinet/in.h>]],[[
1697 un.sun_family = AF_UNSPEC;
1698 int fd = socket (AF_UNIX, SOCK_STREAM, 0);
1699 connect (fd, (sockaddr *)&un, sizeof (un));]])],
1700 [ac_cv_af_unix=yes],
1701 [ac_cv_af_unix=no])])
1702 if test $ac_cv_af_unix = yes; then
1703 AC_DEFINE(HAVE_AF_UNIX, 1,
1704 [Define if AF_UNIX supported.])
1707 # Remote socket connectivity wants AF_INET6 networking
1708 # Check for AF_INET6 networking
1709 AC_CACHE_CHECK(for AF_INET6, ac_cv_af_inet6, [
1710 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1711 #include <sys/types.h>
1712 #include <sys/socket.h>
1713 #include <netinet/in.h>
1714 #include <netdb.h>]],[[
1716 in6.sin6_family = AF_UNSPEC;
1717 struct addrinfo *addrs = 0;
1718 struct addrinfo hints;
1720 hints.ai_family = AF_INET6;
1721 hints.ai_socktype = SOCK_STREAM;
1722 hints.ai_protocol = 0;
1723 hints.ai_canonname = 0;
1726 int e = getaddrinfo ("localhost", 0, &hints, &addrs);
1727 const char *str = gai_strerror (e);
1728 freeaddrinfo (addrs);
1729 int fd = socket (AF_INET6, SOCK_STREAM, 0);
1730 connect (fd, (sockaddr *)&in6, sizeof (in6));]])],
1731 [ac_cv_af_inet6=yes],
1732 [ac_cv_af_inet6=no])])
1733 if test $ac_cv_af_inet6 = yes; then
1734 AC_DEFINE(HAVE_AF_INET6, 1,
1735 [Define if AF_INET6 supported.])
1738 # Check if _LK_LOCK is supported by _locking
1739 AC_CACHE_CHECK(for _LK_LOCK, ac_cv_lk_lock, [
1740 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1742 #include <sys/locking.h>]], [[
1744 return _locking (fd, _LK_LOCK, 0);]])],
1745 [ac_cv_lk_lock=yes],[ac_cv_lk_lock=no])])
1746 if test $ac_cv_lk_lock = yes; then
1747 AC_DEFINE(HOST_HAS_LK_LOCK, 1,
1748 [Define if _LK_LOC supported by _locking.])
1751 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1752 CFLAGS="$saved_CFLAGS"
1753 CXXFLAGS="$saved_CXXFLAGS"
1755 # mkdir takes a single argument on some systems.
1756 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1764 # With Setjmp/Longjmp based exception handling.
1765 AC_ARG_ENABLE(sjlj-exceptions,
1766 [AS_HELP_STRING([--enable-sjlj-exceptions],
1767 [arrange to use setjmp/longjmp exception handling])],
1770 if test $enableval != yes; then
1771 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1776 force_sjlj_exceptions=yes],
1779 force_sjlj_exceptions=yes
1783 force_sjlj_exceptions=yes
1787 force_sjlj_exceptions=no
1790 if test $force_sjlj_exceptions = yes; then
1791 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1792 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1793 [Define 0/1 to force the choice for exception handling model.])
1796 # --------------------------------------------------------
1797 # Build, host, and target specific configuration fragments
1798 # --------------------------------------------------------
1800 # Collect build-machine-specific information.
1801 . ${srcdir}/config.build || exit 1
1803 # Collect host-machine-specific information.
1804 . ${srcdir}/config.host || exit 1
1808 # Collect target-machine-specific information.
1809 . ${srcdir}/config.gcc || exit 1
1811 extra_objs="${host_extra_objs} ${extra_objs}"
1812 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1814 # Default the target-machine variables that were not explicitly set.
1815 if test x"$tm_file" = x
1816 then tm_file=$cpu_type/$cpu_type.h; fi
1818 if test x"$extra_headers" = x
1819 then extra_headers=; fi
1821 if test x$md_file = x
1822 then md_file=$cpu_type/$cpu_type.md; fi
1824 if test x$out_file = x
1825 then out_file=$cpu_type/$cpu_type.c; fi
1827 if test x"$tmake_file" = x
1828 then tmake_file=$cpu_type/t-$cpu_type
1831 # Support --enable-initfini-array.
1832 if test x$enable_initfini_array != xno; then
1833 tm_file="${tm_file} initfini-array.h"
1836 if test x"$dwarf2" = xyes
1837 then tm_file="$tm_file tm-dwarf2.h"
1840 # Say what files are being used for the output code and MD file.
1841 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1842 echo "Using \`$srcdir/config/$md_file' as machine description file."
1844 # If any of the xm_file variables contain nonexistent files, warn
1845 # about them and drop them.
1848 for x in $build_xm_file; do
1849 if test -f $srcdir/config/$x
1851 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1857 for x in $host_xm_file; do
1858 if test -f $srcdir/config/$x
1860 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1866 for x in $xm_file; do
1867 if test -f $srcdir/config/$x
1869 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1875 for f in $tm_file; do
1878 if test $count = ax; then
1879 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1881 echo "Using the following target machine macro files:"
1882 for f in $tm_file; do
1883 echo " $srcdir/config/$f"
1887 if test x$use_long_long_for_widest_fast_int = xyes; then
1888 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1889 [Define to 1 if the 'long long' type is wider than 'long' but still
1890 efficiently supported by the host hardware.])
1893 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1894 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1896 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1897 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1900 for f in $host_xm_file; do
1903 if test $count = a; then
1905 elif test $count = ax; then
1906 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1908 echo "Using the following host machine macro files:"
1909 for f in $host_xm_file; do
1910 echo " $srcdir/config/$f"
1913 echo "Using ${out_host_hook_obj} for host machine hooks."
1915 if test "$host_xm_file" != "$build_xm_file"; then
1917 for f in $build_xm_file; do
1920 if test $count = a; then
1922 elif test $count = ax; then
1923 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1925 echo "Using the following build machine macro files:"
1926 for f in $build_xm_file; do
1927 echo " $srcdir/config/$f"
1932 if test -n "$configured_native_system_header_dir"; then
1933 native_system_header_dir=$configured_native_system_header_dir
1935 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1936 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1940 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1941 gcc_cv_mcontext_underscores,
1942 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1943 #include <sys/cdefs.h>
1944 #include <sys/signal.h>
1945 #include <ucontext.h>
1946 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1948 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1949 if test $gcc_cv_mcontext_underscores = yes; then
1950 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1951 [mcontext_t fields start with __])
1960 # Check if a valid thread package
1961 case ${enable_threads} in
1964 target_thread_file='single'
1968 target_thread_file='single'
1970 aix | dce | lynx | mipssde | posix | rtems | \
1971 single | tpf | vxworks | win32)
1972 target_thread_file=${enable_threads}
1975 echo "${enable_threads} is an unknown thread package" 1>&2
1980 if test x${thread_file} = x; then
1981 # No thread file set by target-specific clauses in config.gcc,
1982 # so use file chosen by default logic above
1983 thread_file=${target_thread_file}
1991 if test x$enable___cxa_atexit = xyes || \
1992 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1993 if test x$host = x$target; then
1995 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1996 # keyed to flag_use_cxa_atexit
2004 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
2005 [echo "__cxa_atexit can't be enabled on this target"])
2009 # We can't check for __cxa_atexit when building a cross, so assume
2013 if test x$use_cxa_atexit = xyes; then
2014 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
2015 [Define if you want to use __cxa_atexit, rather than atexit, to
2016 register C++ destructors for local statics and global objects.
2017 This is essential for fully standards-compliant handling of
2018 destructors, but requires __cxa_atexit in libc.])
2022 # Look for a file containing extra machine modes.
2023 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
2024 extra_modes_file='$(srcdir)'/config/${extra_modes}
2025 AC_SUBST(extra_modes_file)
2026 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
2027 [Define to the name of a file containing a list of extra machine modes
2028 for this architecture.])
2031 # Convert extra_options into a form suitable for Makefile use.
2034 for f in $extra_options; do
2035 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
2036 all_opt_files="$all_opt_files $srcdir/config/$f"
2038 AC_SUBST(extra_opt_files)
2040 # auto-host.h is the file containing items generated by autoconf and is
2041 # the first file included by config.h.
2042 # If host=build, it is correct to have bconfig include auto-host.h
2043 # as well. If host!=build, we are in error and need to do more
2044 # work to find out the build config parameters.
2045 if test x$host = x$build
2047 build_auto=auto-host.h
2048 HAVE_AUTO_BUILD='# '
2050 # We create a subdir, then run autoconf in the subdir.
2051 # To prevent recursion we set host and build for the new
2052 # invocation of configure to the build for this invocation
2059 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
2060 *) realsrcdir=../${srcdir};;
2062 # Clearing GMPINC is necessary to prevent host headers being
2063 # used by the build compiler. Defining GENERATOR_FILE stops
2064 # system.h from including gmp.h.
2065 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
2066 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
2067 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
2068 GMPINC="" CPPFLAGS="${CPPFLAGS_FOR_BUILD} -DGENERATOR_FILE" \
2069 ${realsrcdir}/configure \
2070 --enable-languages=${enable_languages-all} \
2071 ${enable_obsolete+--enable-obsolete="$enable_obsolete"} \
2072 ${enable_option_checking+--enable-option-checking="$enable_option_checking"} \
2073 --target=$target_alias --host=$build_alias \
2074 --build=$build_alias || exit # retaining $tempdir
2076 # We just finished tests for the build machine, so rename
2077 # the file auto-build.h in the gcc directory.
2078 mv auto-host.h ../auto-build.h
2081 build_auto=auto-build.h
2084 AC_SUBST(build_subdir)
2085 AC_SUBST(HAVE_AUTO_BUILD)
2087 tm_file="${tm_file} defaults.h"
2088 tm_p_file="${tm_p_file} tm-preds.h"
2089 tm_d_file="${tm_d_file} defaults.h"
2090 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
2091 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
2092 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
2093 # put this back in temporarily.
2094 xm_file="auto-host.h ansidecl.h ${xm_file}"
2101 # Compile in configure arguments.
2102 if test -f configargs.h ; then
2103 # Being re-configured.
2104 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
2105 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
2106 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
2107 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
2110 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
2113 # Double all backslashes and backslash all quotes to turn
2114 # gcc_config_arguments into a C string.
2115 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
2116 $gcc_config_arguments
2118 gcc_config_arguments_str=`cat conftest.out`
2121 cat > configargs.h <<EOF
2122 /* Generated automatically. */
2123 static const char configuration_arguments[] = "$gcc_config_arguments_str";
2124 static const char thread_model[] = "$thread_file";
2126 static const struct {
2127 const char *name, *value;
2128 } configure_default_options[] = $configure_default_options;
2133 gcc_BASEVER=`cat $srcdir/BASE-VER`
2134 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
2135 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
2136 if test -f $srcdir/REVISION ; then
2137 gcc_REVISION=`cat $srcdir/REVISION`
2141 cat > plugin-version.h <<EOF
2142 #include "configargs.h"
2144 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
2145 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
2146 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
2147 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
2149 static char basever[] = "$gcc_BASEVER";
2150 static char datestamp[] = "$gcc_DATESTAMP";
2151 static char devphase[] = "$gcc_DEVPHASE";
2152 static char revision[] = "$gcc_REVISION";
2154 /* FIXME plugins: We should make the version information more precise.
2155 One way to do is to add a checksum. */
2157 static struct plugin_gcc_version gcc_version = {basever, datestamp,
2159 configuration_arguments};
2163 # Determine what GCC version number to use in filesystem paths.
2166 # Internationalization
2167 ZW_GNU_GETTEXT_SISTER_DIR
2169 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
2170 # -liconv on the link line twice.
2171 case "$LIBINTL" in *$LIBICONV*)
2175 AC_ARG_ENABLE(secureplt,
2176 [AS_HELP_STRING([--enable-secureplt],
2177 [enable -msecure-plt by default for PowerPC])],
2180 AC_ARG_ENABLE(mingw-wildcard,
2181 [AS_HELP_STRING([--enable-mingw-wildcard],
2182 [Set whether to expand wildcard on command-line.
2183 Default to platform configuration])],
2184 [],[enable_mingw_wildcard=platform])
2185 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
2186 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
2187 $(test x"$enable_mingw_wildcard" = xno; echo $?),
2188 [Value to set mingw's _dowildcard to.])])
2190 AC_ARG_ENABLE(large-address-aware,
2191 [AS_HELP_STRING([--enable-large-address-aware],
2192 [Link mingw executables with --large-address-aware])])
2193 AS_IF([test x"$enable_large_address_aware" = xyes],
2194 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
2195 [Define if we should link mingw executables with --large-address-aware])])
2197 AC_ARG_ENABLE(leading-mingw64-underscores,
2198 AS_HELP_STRING([--enable-leading-mingw64-underscores],
2199 [enable leading underscores on 64 bit mingw targets]),
2201 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
2202 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
2203 [Define if we should use leading underscore on 64 bit mingw targets])])
2206 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
2209 AC_ARG_ENABLE(frame-pointer,
2210 [AS_HELP_STRING([--enable-frame-pointer],
2211 [enable -fno-omit-frame-pointer by default for x86])], [],
2214 linux* | gnu* | darwin[[8912]]* | cygwin* | mingw*)
2215 # Enable -fomit-frame-pointer by default for these systems with DWARF2.
2216 enable_frame_pointer=no
2219 enable_frame_pointer=yes
2225 i[[34567]]86-*-* | x86_64-*-*)
2226 if test "x$enable_cld" = xyes; then
2227 tm_defines="${tm_defines} USE_IX86_CLD=1"
2229 if test "x$enable_frame_pointer" = xyes; then
2230 tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1"
2235 # Windows32 Registry support for specifying GCC installation paths.
2236 AC_ARG_ENABLE(win32-registry,
2237 [AS_HELP_STRING([--disable-win32-registry],
2238 [disable lookup of installation paths in the
2239 Registry on Windows hosts])
2240 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
2241 AS_HELP_STRING([--enable-win32-registry=KEY],
2242 [use KEY instead of GCC version as the last portion
2243 of the registry key])],,)
2246 win32 | pe | cygwin* | mingw32*)
2247 if test "x$enable_win32_registry" != xno; then
2248 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
2251 if test "x$enable_win32_registry" != xno; then
2252 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
2253 [Define to 1 if installation paths should be looked up in the Windows
2254 Registry. Ignored on non-Windows hosts.])
2256 if test "x$enable_win32_registry" != xyes \
2257 && test "x$enable_win32_registry" != x; then
2258 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
2259 [Define to be the last component of the Windows registry key under which
2260 to look for installation paths. The full key used will be
2261 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
2262 The default is the GCC version number.])
2268 # Get an absolute path to the GCC top-level source directory
2269 holddir=`${PWDCMD-pwd}`
2271 topdir=`${PWDCMD-pwd}`
2274 # Conditionalize the makefile for this host machine.
2276 for f in ${host_xmake_file}
2278 if test -f ${srcdir}/config/$f
2280 xmake_file="${xmake_file} \$(srcdir)/config/$f"
2284 # Conditionalize the makefile for this target machine.
2286 for f in ${tmake_file}
2288 if test -f ${srcdir}/config/$f
2290 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
2293 tmake_file="${tmake_file_}${omp_device_property_tmake_file}"
2295 out_object_file=`basename $out_file .c`.o
2296 common_out_object_file=`basename $common_out_file .c`.o
2298 tm_file_list="options.h"
2299 tm_include_list="options.h insn-constants.h"
2300 for f in $tm_file; do
2303 f=`echo $f | sed 's/^..//'`
2304 tm_file_list="${tm_file_list} $f"
2305 tm_include_list="${tm_include_list} $f"
2308 tm_file_list="${tm_file_list} \$(srcdir)/$f"
2309 tm_include_list="${tm_include_list} $f"
2312 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
2313 tm_include_list="${tm_include_list} config/$f"
2320 for f in $tm_p_file; do
2323 tm_p_file_list="${tm_p_file_list} $f"
2324 tm_p_include_list="${tm_p_include_list} $f"
2327 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
2328 tm_p_include_list="${tm_p_include_list} config/$f"
2333 tm_d_include_list="options.h insn-constants.h"
2334 for f in $tm_d_file; do
2337 tm_d_file_list="${tm_d_file_list} \$(srcdir)/$f"
2338 tm_d_include_list="${tm_d_include_list} $f"
2341 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
2342 tm_d_include_list="${tm_d_include_list} config/$f"
2349 for f in $xm_file; do
2352 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2353 xm_include_list="${xm_include_list} $f"
2356 xm_file_list="${xm_file_list} $f"
2357 xm_include_list="${xm_include_list} $f"
2360 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2361 xm_include_list="${xm_include_list} config/$f"
2367 host_xm_include_list=
2368 for f in $host_xm_file; do
2371 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2372 host_xm_include_list="${host_xm_include_list} $f"
2375 host_xm_file_list="${host_xm_file_list} $f"
2376 host_xm_include_list="${host_xm_include_list} $f"
2379 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2380 host_xm_include_list="${host_xm_include_list} config/$f"
2386 for f in $build_xm_file; do
2389 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2390 build_xm_include_list="${build_xm_include_list} $f"
2392 auto-build.h | auto-host.h )
2393 build_xm_file_list="${build_xm_file_list} $f"
2394 build_xm_include_list="${build_xm_include_list} $f"
2397 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2398 build_xm_include_list="${build_xm_include_list} config/$f"
2403 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2404 # cross-compiler which does not use the native headers and libraries.
2405 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2406 CROSS= AC_SUBST(CROSS)
2407 ALL=all.internal AC_SUBST(ALL)
2408 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2409 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2411 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2412 test x$build != x$host || test "x$with_build_sysroot" != x; then
2413 if test "x$with_build_sysroot" != x; then
2414 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2416 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2419 if test x$host != x$target
2421 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2423 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2424 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2425 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2428 if test "x$with_build_sysroot" != "x"; then
2429 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2430 elif test "x$with_sysroot" = x; then
2431 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2432 elif test "x$with_sysroot" = xyes; then
2433 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2435 target_header_dir="${with_sysroot}${native_system_header_dir}"
2438 target_header_dir=${native_system_header_dir}
2441 # If this is a cross-compiler that does not
2442 # have its own set of headers then define
2445 # If this is using newlib, without having the headers available now,
2446 # then define inhibit_libc in LIBGCC2_CFLAGS.
2447 # This prevents libgcc2 from containing any code which requires libc
2449 : ${inhibit_libc=false}
2450 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2451 test x$with_newlib = xyes ; } &&
2452 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2455 AC_SUBST(inhibit_libc)
2457 # When building gcc with a cross-compiler, we need to adjust things so
2458 # that the generator programs are still built with the native compiler.
2459 # Also, we cannot run fixincludes.
2461 # These are the normal (build=host) settings:
2462 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2463 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2464 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2465 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2466 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2467 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2469 # And these apply if build != host, or we are generating coverage data
2470 if test x$build != x$host || test "x$coverage_flags" != x
2472 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CFLAGS_FOR_BUILD)'
2473 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CXXFLAGS_FOR_BUILD)'
2474 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2477 # Expand extra_headers to include complete path.
2478 # This substitutes for lots of t-* files.
2480 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2481 for file in ${extra_headers} ; do
2482 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2485 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2486 if test x"$use_gcc_tgmath" = xyes
2487 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2490 # Define collect2 in Makefile.
2491 case $host_can_use_collect2 in
2493 *) collect2='collect2$(exeext)' ;;
2495 AC_SUBST([collect2])
2497 # Add a definition of USE_COLLECT2 if system wants one.
2498 case $use_collect2 in
2499 no) use_collect2= ;;
2502 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2503 xm_defines="${xm_defines} USE_COLLECT2"
2504 case $host_can_use_collect2 in
2506 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2512 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2513 [Define to the name of the LTO plugin DSO that must be
2514 passed to the linker's -plugin=LIB option.])
2516 # ---------------------------
2517 # Assembler & linker features
2518 # ---------------------------
2520 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2521 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2522 # However when ld-new is first executed from the build tree, libtool will
2523 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2524 # to the build tree. While doing this we need to use the previous-stage
2525 # linker, or we have an infinite loop. The presence of a shell script as
2526 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2527 # the gcc/collect-ld script. So we need to know how libtool works, or
2528 # exec-tool will fail.
2530 m4_defun([_LT_CONFIG_COMMANDS], [])
2533 AC_SUBST(enable_fast_install)
2535 # Identify the assembler which will work hand-in-glove with the newly
2536 # built GCC, so that we can examine its features. This is the assembler
2537 # which will be driven by the driver program.
2539 # If build != host, and we aren't building gas in-tree, we identify a
2540 # build->target assembler and hope that it will have the same features
2541 # as the host->target assembler we'll be using.
2542 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2544 m4_pattern_allow([AS_FOR_TARGET])dnl
2545 AS_VAR_SET_IF(gcc_cv_as,, [
2546 if test -x "$DEFAULT_ASSEMBLER"; then
2547 gcc_cv_as="$DEFAULT_ASSEMBLER"
2548 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2549 && test -f ../gas/Makefile \
2550 && test x$build = x$host; then
2551 gcc_cv_as=../gas/as-new$build_exeext
2552 elif test -x as$build_exeext; then
2553 # Build using assembler in the current directory.
2554 gcc_cv_as=./as$build_exeext
2555 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2556 gcc_cv_as="$AS_FOR_TARGET"
2558 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2561 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2562 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2563 case "$ORIGINAL_AS_FOR_TARGET" in
2564 ./as | ./as$build_exeext) ;;
2565 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2570 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2571 [case "${enableval}" in
2577 install_gold_as_default=no
2579 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2580 [case "${enableval}" in
2582 install_gold_as_default=yes
2585 if test x${default_ld} != x; then
2586 install_gold_as_default=yes
2592 AC_MSG_ERROR([invalid --enable-gold argument])
2596 # Identify the linker which will work hand-in-glove with the newly
2597 # built GCC, so that we can examine its features. This is the linker
2598 # which will be driven by the driver program.
2600 # If build != host, and we aren't building gas in-tree, we identify a
2601 # build->target linker and hope that it will have the same features
2602 # as the host->target linker we'll be using.
2603 gcc_cv_gld_major_version=
2604 gcc_cv_gld_minor_version=
2605 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2606 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2607 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2609 AS_VAR_SET_IF(gcc_cv_ld,, [
2610 if test -x "$DEFAULT_LINKER"; then
2611 gcc_cv_ld="$DEFAULT_LINKER"
2612 elif test $install_gold_as_default = yes \
2613 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2614 && test -f ../gold/Makefile \
2615 && test x$build = x$host; then
2616 gcc_cv_ld=../gold/ld-new$build_exeext
2617 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2618 && test -f ../ld/Makefile \
2619 && test x$build = x$host; then
2620 gcc_cv_ld=../ld/ld-new$build_exeext
2621 elif test -x collect-ld$build_exeext; then
2622 # Build using linker in the current directory.
2623 gcc_cv_ld=./collect-ld$build_exeext
2624 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2625 gcc_cv_ld="$LD_FOR_TARGET"
2627 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2630 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2631 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2632 # if the PLUGIN_LD is set ld-new, just have it as ld
2633 # as that is the installed named.
2634 if test x$PLUGIN_LD_SUFFIX = xld-new \
2635 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2638 AC_ARG_WITH(plugin-ld,
2639 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2640 [if test x"$withval" != x; then
2641 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2642 PLUGIN_LD_SUFFIX="$withval"
2644 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2645 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2647 # Check to see if we are using gold instead of ld
2648 AC_MSG_CHECKING(whether we are using gold)
2650 if test x$gcc_cv_ld != x; then
2651 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2652 | grep "GNU gold" > /dev/null; then
2656 AC_MSG_RESULT($ld_is_gold)
2658 AC_MSG_CHECKING(gold linker with split stack support as non default)
2659 # Check to see if default ld is not gold, but gold is
2660 # available and has support for split stack. If gcc was configured
2661 # with gold then no checking is done.
2663 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2665 # For platforms other than powerpc64*, enable as appropriate.
2668 ld_gold=`which ${gcc_cv_ld}.gold`
2669 # Make sure this gold has minimal split stack support
2670 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2671 ld_vers=`$ld_gold --version | sed 1q`
2672 gold_vers=`echo $ld_vers | sed -n \
2673 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2675 # check that the gold version contains the complete split stack support
2676 # on powerpc64 big and little endian
2678 case "$gold_vers" in
2679 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2681 *) gold_non_default=no
2687 if test $gold_non_default = yes; then
2688 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2689 [Define if the gold linker supports split stack and is available as a non-default])
2692 AC_MSG_RESULT($gold_non_default)
2694 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2695 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2696 case "$ORIGINAL_LD_FOR_TARGET" in
2697 ./collect-ld | ./collect-ld$build_exeext) ;;
2698 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2701 AC_MSG_CHECKING(what linker to use)
2702 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2703 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2704 # Single tree build which includes ld. We want to prefer it
2705 # over whatever linker top-level may have detected, since
2706 # we'll use what we're building after installation anyway.
2707 AC_MSG_RESULT(newly built ld)
2709 in_tree_ld_is_elf=no
2710 if (grep 'EMUL = .*elf' ../ld/Makefile \
2711 || grep 'EMUL = .*linux' ../ld/Makefile \
2712 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2713 in_tree_ld_is_elf=yes
2714 elif test "$ld_is_gold" = yes; then
2715 in_tree_ld_is_elf=yes
2717 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
2720 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2721 if test x$gcc_cv_gld_version != x; then
2725 case $gcc_cv_gld_version in
2728 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2731 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2732 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2734 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2735 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2737 AC_MSG_RESULT($gcc_cv_ld)
2739 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2740 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2741 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2744 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2745 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2747 # Figure out what nm we will be using.
2748 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2749 AS_VAR_SET_IF(gcc_cv_nm,, [
2750 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2751 && test -f ../binutils/Makefile \
2752 && test x$build = x$host; then
2753 gcc_cv_nm=../binutils/nm-new$build_exeext
2754 elif test -x nm$build_exeext; then
2755 gcc_cv_nm=./nm$build_exeext
2756 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2757 gcc_cv_nm="$NM_FOR_TARGET"
2759 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2762 AC_MSG_CHECKING(what nm to use)
2763 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2764 # Single tree build which includes binutils.
2765 AC_MSG_RESULT(newly built nm)
2768 AC_MSG_RESULT($gcc_cv_nm)
2772 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2773 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2774 case "$ORIGINAL_NM_FOR_TARGET" in
2775 ./nm | ./nm$build_exeext) ;;
2776 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2780 # Figure out what objdump we will be using.
2781 AS_VAR_SET_IF(gcc_cv_objdump,, [
2782 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2783 && test -f ../binutils/Makefile \
2784 && test x$build = x$host; then
2785 # Single tree build which includes binutils.
2786 gcc_cv_objdump=../binutils/objdump$build_exeext
2787 elif test -x objdump$build_exeext; then
2788 gcc_cv_objdump=./objdump$build_exeext
2789 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2790 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2792 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2795 AC_MSG_CHECKING(what objdump to use)
2796 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2797 # Single tree build which includes binutils.
2798 AC_MSG_RESULT(newly built objdump)
2799 elif test x$gcc_cv_objdump = x; then
2800 AC_MSG_RESULT(not found)
2802 AC_MSG_RESULT($gcc_cv_objdump)
2805 # Figure out what readelf we will be using.
2806 AS_VAR_SET_IF(gcc_cv_readelf,, [
2807 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2808 && test -f ../binutils/Makefile \
2809 && test x$build = x$host; then
2810 # Single tree build which includes binutils.
2811 gcc_cv_readelf=../binutils/readelf$build_exeext
2812 elif test -x readelf$build_exeext; then
2813 gcc_cv_readelf=./readelf$build_exeext
2814 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2815 gcc_cv_readelf="$READELF_FOR_TARGET"
2817 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2820 AC_MSG_CHECKING(what readelf to use)
2821 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2822 # Single tree build which includes binutils.
2823 AC_MSG_RESULT(newly built readelf)
2824 elif test x$gcc_cv_readelf = x; then
2825 AC_MSG_RESULT(not found)
2827 AC_MSG_RESULT($gcc_cv_readelf)
2830 # Figure out what otool we will be using.
2831 AS_VAR_SET_IF(gcc_cv_otool,, [
2832 if test -x otool$build_exeext; then
2833 gcc_cv_otool=./otool$build_exeext
2834 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2835 gcc_cv_otool="$OTOOL_FOR_TARGET"
2837 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2840 AC_MSG_CHECKING(what otool to use)
2841 if test x$gcc_cv_otool = x; then
2842 AC_MSG_RESULT(not found)
2844 AC_MSG_RESULT($gcc_cv_otool)
2847 # Figure out the dsymutil we will use.
2848 AS_VAR_SET_IF(gcc_cv_dsymutil,, [
2849 if test -x "$DEFAULT_DSYMUTIL"; then
2850 gcc_cv_dsymutil="$DEFAULT_DSYMUTIL"
2851 elif test -x dsymutil$build_exeext; then
2852 gcc_cv_dsymutil=./dsymutil$build_exeext
2853 elif ( set dummy $DSYMUTIL_FOR_TARGET; test -x $[2] ); then
2854 gcc_cv_dsymutil=$DSYMUTIL_FOR_TARGET
2855 elif ( set dummy $DSYMUTIL; test -x $[2] ); then
2856 gcc_cv_dsymutil=$DSYMUTIL
2858 AC_PATH_PROG(gcc_cv_dsymutil, $DSYMUTIL_FOR_TARGET)
2861 ORIGINAL_DSYMUTIL_FOR_TARGET=$gcc_cv_dsymutil
2862 AC_SUBST(ORIGINAL_DSYMUTIL_FOR_TARGET)
2863 case "$ORIGINAL_DSYMUTIL_FOR_TARGET" in
2864 ./dsymutil | ./dsymutil$build_exeext) ;;
2865 *) AC_CONFIG_FILES(dsymutil:exec-tool.in, [chmod +x dsymutil]) ;;
2868 # Figure out what assembler alignment features are present.
2869 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,,
2872 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2873 [Define if your assembler supports .balign and .p2align.])])
2875 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,,
2877 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2878 [Define if your assembler supports specifying the maximum number
2879 of bytes to skip when using the GAS .p2align command.])])
2881 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,,
2883 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2884 [Define if your assembler supports .literal16.])])
2886 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,,
2887 [conftest_label1: .word 0
2889 conftest_label2: .word 0
2891 [if test x$gcc_cv_nm != x; then
2892 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2893 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2894 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2896 else gcc_cv_as_subsection_m1=yes
2898 rm -f conftest.nm1 conftest.nm2
2900 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2901 [Define if your assembler supports .subsection and .subsection -1 starts
2902 emitting at the beginning of your section.])])
2904 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,,
2906 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2908 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,,
2909 [ .weakref foobar, barfnot],,
2910 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2912 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,,
2914 .NSUBSPA $CODE$,COMDAT],,
2915 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2917 # .hidden needs to be supported in both the assembler and the linker,
2918 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2919 # This is irritatingly difficult to feature test for; we have to check the
2920 # date string after the version number. If we've got an in-tree
2921 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2923 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2926 conftest_s=' .globl foobar,hidden'
2929 conftest_s=' .hidden foobar
2933 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,, [$conftest_s])
2936 # Darwin as has some visibility support, though with a different syntax.
2937 gcc_cv_as_hidden=yes
2941 # gnu_indirect_function type is an extension proposed at
2942 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2943 # selection of function implementation
2944 AC_ARG_ENABLE(gnu-indirect-function,
2945 [AS_HELP_STRING([--enable-gnu-indirect-function],
2946 [enable the use of the @gnu_indirect_function to glibc systems])],
2947 [case $enable_gnu_indirect_function in
2949 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2950 Valid choices are 'yes' and 'no'.]) ;;
2952 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2956 AC_MSG_CHECKING(linker ifunc IRELATIVE support)
2957 cat > conftest.s <<EOF
2959 .type foo_resolver, @function
2962 .size foo_resolver, .-foo_resolver
2965 .type foo, %gnu_indirect_function
2966 .set foo, foo_resolver
2969 .type bar, @function
2975 if test x$gcc_cv_as != x \
2976 && test x$gcc_cv_ld != x \
2977 && test x$gcc_cv_readelf != x \
2978 && $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2979 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1 \
2980 && $gcc_cv_readelf --relocs --wide conftest \
2981 | grep R_RISCV_IRELATIVE > /dev/null 2>&1; then
2982 enable_gnu_indirect_function=yes
2984 rm -f conftest conftest.o conftest.s
2985 AC_MSG_RESULT($enable_gnu_indirect_function)
2989 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2990 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2991 [Define if your system supports gnu indirect functions.])
2995 if test $in_tree_ld != yes ; then
2996 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2997 if echo "$ld_ver" | grep GNU > /dev/null; then
2998 if test x"$ld_is_gold" = xyes; then
2999 # GNU gold --version looks like this:
3001 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
3003 # We extract the binutils version which is more familiar and specific
3004 # than the gold version.
3005 ld_vers=`echo $ld_ver | sed -n \
3006 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3008 # GNU ld --version looks like this:
3010 # GNU ld (GNU Binutils) 2.21.51.20110225
3011 ld_vers=`echo $ld_ver | sed -n \
3012 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3014 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)\(-*\)\([01][0-9]\)\2\([0-3][0-9]\).*$,\1\3\4,p'`
3015 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3016 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3017 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
3021 # Solaris 2 ld -V output looks like this for a regular version:
3023 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
3025 # but test versions add stuff at the end:
3027 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
3029 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
3030 # numbers can be used in ld.so.1 feature checks even if a different
3031 # linker is configured.
3032 ld_ver=`$gcc_cv_ld -V 2>&1`
3033 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
3034 ld_vers=`echo $ld_ver | sed -n \
3035 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
3036 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3037 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3045 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
3046 [[if test $in_tree_ld = yes ; then
3048 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
3049 && test $in_tree_ld_is_elf = yes; then
3050 gcc_cv_ld_hidden=yes
3053 gcc_cv_ld_hidden=yes
3054 if test x"$ld_is_gold" = xyes; then
3056 elif echo "$ld_ver" | grep GNU > /dev/null; then
3057 if test 0"$ld_date" -lt 20020404; then
3058 if test -n "$ld_date"; then
3059 # If there was date string, but was earlier than 2002-04-04, fail
3061 elif test -z "$ld_vers"; then
3062 # If there was no date string nor ld version number, something is wrong
3065 test -z "$ld_vers_patch" && ld_vers_patch=0
3066 if test "$ld_vers_major" -lt 2; then
3068 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
3069 gcc_cv_ld_hidden="no"
3070 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
3078 gcc_cv_ld_hidden=yes
3081 # Darwin ld has some visibility support.
3082 gcc_cv_ld_hidden=yes
3084 hppa64*-*-hpux* | ia64*-*-hpux*)
3085 gcc_cv_ld_hidden=yes
3088 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
3089 # .symbolic was only added in Solaris 9 12/02.
3090 gcc_cv_ld_hidden=yes
3098 libgcc_visibility=no
3099 AC_SUBST(libgcc_visibility)
3100 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
3101 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
3102 libgcc_visibility=yes
3103 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
3104 [Define if your assembler and linker support .hidden.])
3107 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3108 gcc_cv_ld_ro_rw_mix=unknown
3109 if test $in_tree_ld = yes ; then
3110 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3111 && test $in_tree_ld_is_elf = yes; then
3112 gcc_cv_ld_ro_rw_mix=read-write
3114 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3115 echo '.section myfoosect, "a"' > conftest1.s
3116 echo '.section myfoosect, "aw"' > conftest2.s
3117 echo '.byte 1' >> conftest2.s
3118 echo '.section myfoosect, "a"' > conftest3.s
3119 echo '.byte 0' >> conftest3.s
3120 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3121 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3122 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3123 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3124 conftest2.o conftest3.o > /dev/null 2>&1; then
3125 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3126 | sed -e '/myfoosect/!d' -e N`
3127 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3128 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3129 gcc_cv_ld_ro_rw_mix=read-only
3131 gcc_cv_ld_ro_rw_mix=read-write
3136 rm -f conftest.* conftest[123].*
3139 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3140 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3141 [Define if your linker links a mix of read-only
3142 and read-write sections into a read-write section.])
3144 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3146 gcc_AC_INITFINI_ARRAY
3148 # Check if we have .[us]leb128, and support symbol arithmetic with it.
3149 # Older versions of GAS and some non-GNU assemblers, have a bugs handling
3150 # these directives, even when they appear to accept them.
3151 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,,
3158 .uleb128 0x8000000000000000
3161 if test "x$gcc_cv_objdump" != x; then
3162 if $gcc_cv_objdump -s conftest.o 2>/dev/null \
3163 | grep '04800a8e 78808080 80808080 808001' >/dev/null; then
3164 gcc_cv_as_leb128=yes
3166 elif test "x$gcc_cv_otool" != x; then
3167 if $gcc_cv_otool -d conftest.o 2>/dev/null \
3168 | grep '04 80 0a 8e 78 80 80 80 80 80 80 80 80 80 01' >/dev/null; then
3169 gcc_cv_as_leb128=yes
3172 # play safe, assume the assembler is broken.
3176 [AC_DEFINE(HAVE_AS_LEB128, 1,
3177 [Define if your assembler supports .sleb128 and .uleb128.])],
3178 [AC_DEFINE(HAVE_AS_LEB128, 0,
3179 [Define if your assembler supports .sleb128 and .uleb128.])])
3181 # Determine if an .eh_frame section is read-only.
3182 gcc_fn_eh_frame_ro () {
3183 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
3184 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
3185 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
3188 # Check if we have assembler support for unwind directives.
3189 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,,
3195 .cfi_escape 1, 2, 3, 4, 5
3199 # If the linker used on Solaris (like Sun ld) isn't capable of merging
3200 # read-only and read-write sections, we need to make sure that the
3201 # assembler used emits read-write .eh_frame sections.
3202 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
3203 gcc_cv_as_cfi_directive=yes
3204 elif test "x$gcc_cv_objdump" = x; then
3205 # No objdump, err on the side of caution.
3206 gcc_cv_as_cfi_directive=no
3208 if test x$gas = xyes; then
3216 sparc*-*-solaris2.*)
3217 # On Solaris/SPARC, .eh_frame sections should always be read-write.
3218 if gcc_fn_eh_frame_ro $as_32_opt \
3219 || gcc_fn_eh_frame_ro $as_64_opt; then
3220 gcc_cv_as_cfi_directive=no
3222 gcc_cv_as_cfi_directive=yes
3225 i?86-*-solaris2.* | x86_64-*-solaris2.*)
3226 # On Solaris/x86, make sure that GCC and assembler agree on using
3227 # read-only .eh_frame sections for 64-bit.
3228 if gcc_fn_eh_frame_ro $as_32_opt; then
3229 gcc_cv_as_cfi_directive=no
3230 elif gcc_fn_eh_frame_ro $as_64_opt; then
3231 gcc_cv_as_cfi_directive=yes
3233 gcc_cv_as_cfi_directive=no
3240 gcc_cv_as_cfi_directive=yes
3243 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
3244 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,,
3247 .cfi_adjust_cfa_offset 64
3249 .cfi_adjust_cfa_offset 128
3252 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
3253 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
3254 gcc_cv_as_cfi_advance_working=yes
3258 # no objdump, err on the side of caution
3259 gcc_cv_as_cfi_advance_working=no
3261 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
3262 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
3263 [`if test $gcc_cv_as_cfi_directive = yes \
3264 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
3265 [Define 0/1 if your assembler supports CFI directives.])
3267 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
3268 gcc_GAS_CHECK_FEATURE([cfi personality directive],
3269 gcc_cv_as_cfi_personality_directive,,
3272 .cfi_personality 0, symbol
3274 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
3275 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
3276 [Define 0/1 if your assembler supports .cfi_personality.])
3278 gcc_GAS_CHECK_FEATURE([cfi sections directive],
3279 gcc_cv_as_cfi_sections_directive,,
3281 .cfi_sections .debug_frame, .eh_frame
3285 win32 | pe | cygwin* | mingw32*)
3286 # Need to check that we generated the correct relocation for the
3287 # .debug_frame section. This was fixed for binutils 2.21.
3288 gcc_cv_as_cfi_sections_directive=no
3289 if test "x$gcc_cv_objdump" != x; then
3290 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
3291 grep secrel > /dev/null; then
3292 gcc_cv_as_cfi_sections_directive=yes
3297 gcc_cv_as_cfi_sections_directive=yes
3300 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
3301 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
3302 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
3303 [Define 0/1 if your assembler supports .cfi_sections.])
3305 # GAS versions up to and including 2.11.0 may mis-optimize
3307 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,,
3314 .section .eh_frame,"aw",@progbits
3316 .4byte .LECIE1-.LSCIE1
3330 .4byte .LEFDE1-.LASFDE1
3332 .4byte .LASFDE1-__FRAME_BEGIN__
3340 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
3341 cat > conftest.lit <<EOF
3342 0000 10000000 00000000 017a0001 781a0004 .........z..x...
3343 0010 01000000 12000000 18000000 00000000 ................
3344 0020 08000000 04080000 0044 .........D @&t@
3346 cat > conftest.big <<EOF
3347 0000 00000010 00000000 017a0001 781a0004 .........z..x...
3348 0010 00000001 00000012 00000018 00000000 ................
3349 0020 00000008 04000000 0844 .........D @&t@
3351 # If the assembler didn't choke, and we can objdump,
3352 # and we got the correct data, then succeed.
3353 # The text in the here-document typically retains its unix-style line
3354 # endings, while the output of objdump will use host line endings.
3355 # Therefore, use diff -b for the comparisons.
3356 if test x$gcc_cv_objdump != x \
3357 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3358 | tail -3 > conftest.got \
3359 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3360 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3362 gcc_cv_as_eh_frame=yes
3363 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3364 gcc_cv_as_eh_frame=buggy
3366 # Uh oh, what do we do now?
3367 gcc_cv_as_eh_frame=no
3370 if test $gcc_cv_as_eh_frame = buggy; then
3371 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3372 [Define if your assembler mis-optimizes .eh_frame data.])
3375 # Test if the assembler supports the section flag 'e' or #exclude for
3376 # specifying an excluded section.
3377 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3381 if test $gcc_cv_as_section_exclude_e = no; then
3383 # Solaris as uses #exclude instead.
3387 conftest_s='.section "foo1", #exclude'
3389 i?86-*-solaris2* | x86_64-*-solaris2*)
3390 conftest_s='.section foo1, #exclude'
3395 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,
3399 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3400 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3401 [Define if your assembler supports specifying the exclude section flag.])
3403 # Test if the assembler supports the section flag 'R' for specifying
3404 # section with SHF_GNU_RETAIN.
3406 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3407 # assembler supports the section flag 'R', it doesn't mean that
3408 # Solairs ld supports it.
3410 gcc_cv_as_shf_gnu_retain=no
3413 gcc_GAS_CHECK_FEATURE([section 'R' flag], gcc_cv_as_shf_gnu_retain,
3415 [.section .foo,"awR",%progbits
3419 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_GNU_RETAIN,
3420 [`if test $gcc_cv_as_shf_gnu_retain = yes; then echo 1; else echo 0; fi`],
3421 [Define 0/1 if your assembler supports marking sections with SHF_GNU_RETAIN flag.])
3423 # Test if the assembler supports the section flag 'o' for specifying
3424 # section with link-order.
3426 # Solaris may use GNU assembler with Solairs ld. Even if GNU
3427 # assembler supports the section flag 'o', it doesn't mean that
3428 # Solairs ld supports it.
3430 gcc_cv_as_section_link_order=no
3433 gcc_GAS_CHECK_FEATURE([section 'o' flag], gcc_cv_as_section_link_order,
3437 .section __patchable_function_entries,"awo",%progbits,.foo
3441 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_LINK_ORDER,
3442 [`if test $gcc_cv_as_section_link_order = yes; then echo 1; else echo 0; fi`],
3443 [Define 0/1 if your assembler supports 'o' flag in .section directive.])
3445 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3447 [.section .rodata.str, "aMS", @progbits, 1])
3448 if test $gcc_cv_as_shf_merge = no; then
3449 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3451 [.section .rodata.str, "aMS", %progbits, 1])
3453 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3454 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3455 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3457 gcc_cv_ld_aligned_shf_merge=yes
3459 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for
3461 sparc*-*-solaris2.11*)
3462 if test x"$gnu_ld" = xno \
3463 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then
3464 gcc_cv_ld_aligned_shf_merge=no
3468 AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE,
3469 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`],
3470 [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.])
3472 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive,,
3473 [.stabs "gcc2_compiled.",60,0,0,0],,
3474 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
3475 [Define if your assembler supports .stabs.])])
3477 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3478 gcc_cv_as_comdat_group,
3480 [.section .text,"axG",@progbits,.foo,comdat])
3481 if test $gcc_cv_as_comdat_group = yes; then
3482 gcc_cv_as_comdat_group_percent=no
3483 gcc_cv_as_comdat_group_group=no
3485 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3486 gcc_cv_as_comdat_group_percent,
3488 [.section .text,"axG",%progbits,.foo,comdat])
3489 if test $gcc_cv_as_comdat_group_percent = yes; then
3490 gcc_cv_as_comdat_group_group=no
3493 # Sun as uses a completely different syntax.
3498 .group foo,".text%foo",#comdat
3499 .section ".text%foo", #alloc,#execinstr,#progbits
3504 i?86-*-solaris2* | x86_64-*-solaris2*)
3506 .group foo,.text%foo,#comdat
3507 .section .text%foo, "ax", @progbits
3513 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3514 gcc_cv_as_comdat_group_group,
3518 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3519 gcc_cv_as_comdat_group_group=no
3523 if test x"$ld_is_gold" = xyes; then
3525 elif test $in_tree_ld = yes ; then
3527 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3528 && test $in_tree_ld_is_elf = yes; then
3531 elif echo "$ld_ver" | grep GNU > /dev/null; then
3533 if test 0"$ld_date" -lt 20050308; then
3534 if test -n "$ld_date"; then
3535 # If there was date string, but was earlier than 2005-03-08, fail
3537 elif test "$ld_vers_major" -lt 2; then
3539 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3546 *-*-solaris2.1[1-9]*)
3548 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3549 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3552 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3553 # least ld version 1.2267.
3554 if test "$ld_vers_major" -gt 1; then
3556 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3558 elif test "$ld_vers_minor" -ge 2267; then
3563 # Assume linkers other than GNU ld don't support COMDAT group.
3569 # Allow overriding the automatic COMDAT group tests above.
3570 AC_ARG_ENABLE(comdat,
3571 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3572 [comdat_group="$enable_comdat"])
3573 if test $comdat_group = no; then
3574 gcc_cv_as_comdat_group=no
3575 gcc_cv_as_comdat_group_percent=no
3576 gcc_cv_as_comdat_group_group=no
3578 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3579 [`if test $gcc_cv_as_comdat_group = yes \
3580 || test $gcc_cv_as_comdat_group_percent = yes \
3581 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3582 [Define 0/1 if your assembler and linker support COMDAT groups.])
3584 # Restrict this test to Solaris/x86: other targets define this statically.
3586 i?86-*-solaris2* | x86_64-*-solaris2*)
3587 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3588 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3592 # Full support for hidden thunks in linkonce sections only appeared in
3593 # Solaris 11/OpenSolaris.
3594 *-*-solaris2.1[[1-9]]*)
3602 AC_MSG_RESULT($hidden_linkonce)
3603 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3604 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3605 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3609 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3613 .loc 1 1 0 is_stmt 1],,
3614 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3615 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3617 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3618 gcc_cv_as_discriminator,,
3621 .loc 1 1 0 discriminator 1],,
3622 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3623 [Define if your assembler supports the .loc discriminator sub-directive.])])
3625 # Catch the newlib flag of the same name so we can gate GCC features on it.
3626 AC_ARG_ENABLE(newlib-nano-formatted-io,
3627 [AS_HELP_STRING([--enable-newlib-nano-formatted-io], [Use nano version
3629 [case "${enableval}" in
3633 AC_MSG_ERROR([unknown newlib-nano-formatted-io setting $enableval])
3637 # Thread-local storage - the check is heavily parameterized.
3644 .section ".tdata","awT",@progbits
3647 ldq $27,__tls_get_addr($29) !literal!1
3648 lda $16,foo($29) !tlsgd!1
3649 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3650 ldq $27,__tls_get_addr($29) !literal!2
3651 lda $16,foo($29) !tlsldm!2
3652 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3653 ldq $1,foo($29) !gotdtprel
3654 ldah $2,foo($29) !dtprelhi
3655 lda $3,foo($2) !dtprello
3656 lda $4,foo($29) !dtprel
3657 ldq $1,foo($29) !gottprel
3658 ldah $2,foo($29) !tprelhi
3659 lda $3,foo($2) !tprello
3660 lda $4,foo($29) !tprel'
3661 tls_as_opt=--fatal-warnings
3665 add_s r0,r0, @foo@tpoff'
3667 cris-*-*|crisv32-*-*)
3669 .section ".tdata","awT",@progbits
3674 tls_as_opt=--fatal-warnings
3678 .section ".tdata","awT",@progbits
3688 .section ".tdata","awT",@progbits
3692 addil LT%foo-$tls_gdidx$,gp
3693 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3696 addil LT%foo-$tls_ldidx$,gp
3698 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3699 addil LR%foo-$tls_dtpoff$,%ret0
3700 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3702 addil LT%foo-$tls_ieoff$,gp
3703 ldw RT%foo-$tls_ieoff$(%r1),%t2
3706 addil LR%foo-$tls_leoff$,%t1
3707 ldo RR%foo-$tls_leoff$(%r1),%t2'
3708 tls_as_opt=--fatal-warnings
3712 .section ".tdata","awT",%progbits
3721 i[34567]86-*-* | x86_64-*-*)
3723 i[34567]86-*-solaris2.* | x86_64-*-solaris2.*)
3730 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3732 .section .tdata,"awt",@progbits'
3735 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3736 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3740 .section ".tdata","awT",@progbits'
3742 tls_as_opt="--fatal-warnings"
3746 if test x$on_solaris = xyes; then
3748 yes) tls_as_opt="$tls_as_opt --32" ;;
3751 conftest_s="$conftest_s
3755 leal foo@tlsgd(,%ebx,1), %eax
3756 leal foo@tlsldm(%ebx), %eax
3757 leal foo@dtpoff(%eax), %edx
3758 movl foo@gottpoff(%ebx), %eax
3759 subl foo@gottpoff(%ebx), %eax
3760 addl foo@gotntpoff(%ebx), %eax
3761 movl foo@indntpoff, %eax
3762 movl \$foo@tpoff, %eax
3763 subl \$foo@tpoff, %eax
3764 leal foo@ntpoff(%ecx), %eax"
3767 if test x$on_solaris = xyes; then
3769 yes) tls_as_opt="$tls_as_opt --64" ;;
3770 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3773 conftest_s="$conftest_s
3777 leaq foo@tlsgd(%rip), %rdi
3778 leaq foo@tlsld(%rip), %rdi
3779 leaq foo@dtpoff(%rax), %rdx
3780 movq foo@gottpoff(%rip), %rax
3781 movq \$foo@tpoff, %rax"
3787 .section ".tdata","awT",@progbits
3790 addl r16 = @ltoff(@dtpmod(foo#)), gp
3791 addl r17 = @ltoff(@dtprel(foo#)), gp
3792 addl r18 = @ltoff(@tprel(foo#)), gp
3793 addl r19 = @dtprel(foo#), gp
3794 adds r21 = @dtprel(foo#), r13
3795 movl r23 = @dtprel(foo#)
3796 addl r20 = @tprel(foo#), gp
3797 adds r22 = @tprel(foo#), r13
3798 movl r24 = @tprel(foo#)'
3799 tls_as_opt=--fatal-warnings
3803 .section .tdata,"awT",@progbits
3807 addik r5,r20,x@TLSGD
3808 addik r5,r20,x@TLSLDM'
3809 tls_as_opt='--fatal-warnings'
3813 .section .tdata,"awT",@progbits
3817 addiu $4, $28, %tlsgd(x)
3818 addiu $4, $28, %tlsldm(x)
3819 lui $4, %dtprel_hi(x)
3820 addiu $4, $4, %dtprel_lo(x)
3821 lw $4, %gottprel(x)($28)
3822 lui $4, %tprel_hi(x)
3823 addiu $4, $4, %tprel_lo(x)'
3824 tls_as_opt='-32 --fatal-warnings'
3828 .section .tdata,"awT",@progbits
3833 move.l x@TLSGD(%a5),%a0
3834 move.l x@TLSLDM(%a5),%a0
3835 move.l x@TLSLDO(%a5),%a0
3836 move.l x@TLSIE(%a5),%a0
3837 move.l x@TLSLE(%a5),%a0'
3838 tls_as_opt='--fatal-warnings'
3842 .section ".tdata","awT",@progbits'
3843 tls_as_opt="--fatal-warnings"
3847 .section ".tdata","awT",%progbits
3851 add x0, x0, #:tlsgd_lo12:x
3854 tls_as_opt='--fatal-warnings'
3858 .section ".tdata","awT",@progbits
3861 l.movhi r3, tpoffha(foo)
3863 l.lwz r4, tpofflo(foo)(r3)'
3864 tls_as_opt=--fatal-warnings
3868 .extern __get_tpointer
3884 .section ".tdata","awT",@progbits
3892 addi 3,2,ld0@got@tlsgd
3898 addi 3,2,x1@got@tlsld
3904 addis 9,3,x2@dtprel@ha
3905 addi 9,9,x2@dtprel@l
3908 ld 9,x3@got@dtprel(2)
3912 tls_as_opt="-a64 --fatal-warnings"
3916 .section ".tdata","awT",@progbits
3924 addi 3,31,ld0@got@tlsgd
3926 addi 3,31,x1@got@tlsld
3929 addis 9,3,x2@dtprel@ha
3930 addi 9,9,x2@dtprel@l
3931 lwz 9,x3@got@tprel(31)
3934 addis 9,2,x2@tprel@ha
3935 addi 9,9,x2@tprel@l'
3936 tls_as_opt="-a32 --fatal-warnings"
3940 .section .tdata,"awT",@progbits
3944 call __tls_get_addr'
3945 tls_as_opt='--fatal-warnings'
3949 .section ".tdata","awT",@progbits
3958 l %r1,foo@GOTNTPOFF(%r12)
3959 l %r1,0(%r1):tls_load:foo
3960 bas %r14,0(%r1,%r13):tls_gdcall:foo
3961 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3962 tls_as_opt="-m31 --fatal-warnings"
3966 .section ".tdata","awT",@progbits
3974 lg %r1,foo@GOTNTPOFF(%r12)
3975 larl %r1,foo@INDNTPOFF
3976 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3977 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3978 tls_as_opt="-m64 -Aesame --fatal-warnings"
3980 sh-*-* | sh[123456789lbe]*-*-*)
3982 .section ".tdata","awT",@progbits
3990 tls_as_opt=--fatal-warnings
3994 sparc*-sun-solaris2.*)
4001 if test x$on_solaris = xyes && test x$gas_flag = xno; then
4003 .section ".tdata",#alloc,#write,#tls'
4006 .section ".tdata","awT",@progbits'
4007 tls_as_opt="-32 --fatal-warnings"
4009 conftest_s="$conftest_s
4012 sethi %tgd_hi22(foo), %o0
4013 add %o0, %tgd_lo10(foo), %o1
4014 add %l7, %o1, %o0, %tgd_add(foo)
4015 call __tls_get_addr, %tgd_call(foo)
4016 sethi %tldm_hi22(foo), %l1
4017 add %l1, %tldm_lo10(foo), %l2
4018 add %l7, %l2, %o0, %tldm_add(foo)
4019 call __tls_get_addr, %tldm_call(foo)
4020 sethi %tldo_hix22(foo), %l3
4021 xor %l3, %tldo_lox10(foo), %l4
4022 add %o0, %l4, %l5, %tldo_add(foo)
4023 sethi %tie_hi22(foo), %o3
4024 add %o3, %tie_lo10(foo), %o3
4025 ld [%l7 + %o3], %o2, %tie_ld(foo)
4026 add %g7, %o2, %o4, %tie_add(foo)
4027 sethi %tle_hix22(foo), %l1
4028 xor %l1, %tle_lox10(foo), %o5
4029 ld [%g7 + %o5], %o1"
4033 .section ".tdata","awT",@progbits
4036 addli r0, zero, tls_gd(foo)
4037 auli r0, zero, tls_gd_ha16(foo)
4038 addli r0, r0, tls_gd_lo16(foo)
4040 addli r0, zero, tls_ie(foo)
4041 auli r0, r0, tls_ie_ha16(foo)
4042 addli r0, r0, tls_ie_lo16(foo)'
4043 tls_as_opt="--fatal-warnings"
4047 .section ".tdata","awT",@progbits
4050 shl16insli r0, zero, hw0_last_tls_gd(foo)
4051 shl16insli r0, zero, hw1_last_tls_gd(foo)
4052 shl16insli r0, r0, hw0_tls_gd(foo)
4054 shl16insli r0, zero, hw1_last_tls_ie(foo)
4055 shl16insli r0, r0, hw0_tls_ie(foo)'
4056 tls_as_opt="--fatal-warnings"
4060 .section ".tdata","awT",@progbits
4063 movi a8, foo@TLSFUNC
4064 movi a10, foo@TLSARG
4065 callx8.tls a8, foo@TLSCALL'
4070 if test "x$enable_tls" = xno ; then
4071 : # TLS explicitly disabled.
4072 elif test "x$enable_tls" = xyes ; then
4073 set_have_as_tls=yes # TLS explicitly enabled.
4074 elif test -z "$conftest_s"; then
4075 : # If we don't have a check, assume no support.
4077 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
4078 [$tls_as_opt], [$conftest_s],,
4079 [set_have_as_tls=yes])
4081 if test $set_have_as_tls = yes ; then
4082 AC_DEFINE(HAVE_AS_TLS, 1,
4083 [Define if your assembler and linker support thread-local storage.])
4086 # Target-specific assembler checks.
4088 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
4089 gcc_cv_ld_static_dynamic=no
4090 gcc_cv_ld_static_option='-Bstatic'
4091 gcc_cv_ld_dynamic_option='-Bdynamic'
4092 if test $in_tree_ld = yes ; then
4093 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
4094 gcc_cv_ld_static_dynamic=yes
4096 elif test x$gcc_cv_ld != x; then
4097 # Check if linker supports -Bstatic/-Bdynamic option
4098 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
4099 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
4100 gcc_cv_ld_static_dynamic=yes
4103 # AIX ld uses -b flags
4104 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
4105 gcc_cv_ld_static_dynamic=yes
4106 gcc_cv_ld_static_option="-bstatic"
4107 gcc_cv_ld_dynamic_option="-bdynamic"
4109 # HP-UX ld uses -a flags to select between shared and archive.
4111 if test x"$gnu_ld" = xno; then
4112 gcc_cv_ld_static_dynamic=yes
4113 gcc_cv_ld_static_option="-aarchive_shared"
4114 gcc_cv_ld_dynamic_option="-adefault"
4117 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
4119 gcc_cv_ld_static_dynamic=yes
4124 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
4125 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
4126 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
4127 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
4128 [Define to the linker option to disable use of shared objects.])
4129 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
4130 [Define to the linker option to enable use of shared objects.])
4132 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
4134 AC_MSG_CHECKING(linker --version-script option)
4135 gcc_cv_ld_version_script=no
4136 ld_version_script_option=''
4137 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4138 gcc_cv_ld_version_script=yes
4139 ld_version_script_option='--version-script'
4140 elif test x$gcc_cv_ld != x; then
4142 # Solaris 2 ld always supports -M. It also supports a subset of
4143 # --version-script since Solaris 11.4, but requires
4144 # -z gnu-version-script-compat to activate.
4146 gcc_cv_ld_version_script=yes
4147 ld_version_script_option='-M'
4151 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4152 AC_MSG_RESULT($gcc_cv_ld_version_script)
4153 AC_SUBST(ld_version_script_option)
4155 AC_MSG_CHECKING(linker soname option)
4157 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4158 gcc_cv_ld_soname=yes
4159 ld_soname_option='-soname'
4160 elif test x$gcc_cv_ld != x; then
4163 gcc_cv_ld_soname=yes
4164 ld_soname_option='-install_name'
4166 # Solaris 2 ld always supports -h. It also supports --soname for GNU
4167 # ld compatiblity since some Solaris 10 update.
4169 gcc_cv_ld_soname=yes
4170 ld_soname_option='-h'
4174 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4175 AC_MSG_RESULT($gcc_cv_ld_soname)
4176 AC_SUBST(ld_soname_option)
4178 if test x"$demangler_in_ld" = xyes; then
4179 AC_MSG_CHECKING(linker --demangle support)
4180 gcc_cv_ld_demangle=no
4181 if test $in_tree_ld = yes; then
4182 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
4183 gcc_cv_ld_demangle=yes
4185 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
4186 # Check if the GNU linker supports --demangle option
4187 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
4188 gcc_cv_ld_demangle=yes
4191 if test x"$gcc_cv_ld_demangle" = xyes; then
4192 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
4193 [Define if your linker supports --demangle option.])
4195 AC_MSG_RESULT($gcc_cv_ld_demangle)
4198 AC_MSG_CHECKING(linker plugin support)
4200 if test -f liblto_plugin.la; then
4201 save_ld_ver="$ld_ver"
4202 save_ld_vers_major="$ld_vers_major"
4203 save_ld_vers_minor="$ld_vers_minor"
4204 save_ld_is_gold="$ld_is_gold"
4208 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
4210 # FIXME: ld_is_gold?
4211 ld_vers_major="$gcc_cv_gld_major_version"
4212 ld_vers_minor="$gcc_cv_gld_minor_version"
4214 # Determine plugin linker version.
4215 # FIXME: Partial duplicate from above, generalize.
4217 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
4218 if echo "$ld_ver" | grep GNU > /dev/null; then
4219 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
4221 ld_vers=`echo $ld_ver | sed -n \
4222 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
4224 ld_vers=`echo $ld_ver | sed -n \
4225 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
4227 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
4228 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
4233 # Determine plugin support.
4234 if echo "$ld_ver" | grep GNU > /dev/null; then
4235 # Require GNU ld or gold 2.21+ for plugin support by default.
4236 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
4238 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
4239 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
4244 ld_ver="$save_ld_ver"
4245 ld_vers_major="$save_ld_vers_major"
4246 ld_vers_minor="$save_ld_vers_minor"
4247 ld_is_gold="$save_ld_is_gold"
4249 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
4250 [Define to the level of your linker's plugin support.])
4251 AC_MSG_RESULT($gcc_cv_lto_plugin)
4253 # Target OS-specific assembler checks.
4255 case "$target_os" in
4257 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
4258 gcc_cv_as_mmacosx_version_min,
4259 [-mmacosx-version-min=10.1], [.text],,
4260 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
4261 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
4265 # Target CPU-specific assembler checks.
4269 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,
4270 [-mabi=lp64], [.text],,,)
4271 if test x$gcc_cv_as_aarch64_mabi = xyes; then
4272 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
4273 [Define if your assembler supports the -mabi option.])
4275 if test x$with_abi = xilp32; then
4276 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4277 Upgrade the Assembler.])
4279 if test x"$with_multilib_list" = xdefault; then
4280 TM_MULTILIB_CONFIG=lp64
4282 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
4283 for aarch64_multilib in ${aarch64_multilibs}; do
4284 case ${aarch64_multilib} in
4286 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4287 Upgrade the Assembler.])
4295 # Check if we have binutils support for relocations types needed by -fpic
4296 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,
4299 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
4300 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
4301 [Define if your assembler supports relocs needed by -fpic.])])
4302 # Enable Branch Target Identification Mechanism and Return Address
4303 # Signing by default.
4304 AC_ARG_ENABLE(standard-branch-protection,
4306 AS_HELP_STRING([--enable-standard-branch-protection],
4307 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4308 AS_HELP_STRING([--disable-standard-branch-protection],
4309 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4314 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1"
4319 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
4320 Valid choices are 'yes' and 'no'.])
4325 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
4326 AC_ARG_ENABLE(fix-cortex-a53-835769,
4328 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
4329 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4330 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
4331 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4336 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4341 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4342 Valid choices are 'yes' and 'no'.])
4348 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4349 AC_ARG_ENABLE(fix-cortex-a53-843419,
4351 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4352 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4353 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4354 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4359 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4364 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4365 Valid choices are 'yes' and 'no'.])
4373 # All TARGET_ABI_OSF targets.
4374 alpha*-*-linux* | alpha*-*-*bsd*)
4375 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4376 gcc_cv_as_alpha_explicit_relocs,,
4379 extbl $3, $2, $3 !lituse_bytoff!1
4380 ldq $2, a($29) !literal!1
4381 ldq $4, b($29) !literal!2
4382 ldq_u $3, 0($2) !lituse_base!1
4383 ldq $27, f($29) !literal!5
4384 jsr $26, ($27), f !lituse_jsr!5
4385 ldah $29, 0($26) !gpdisp!3
4386 lda $0, c($29) !gprel
4387 ldah $1, d($29) !gprelhigh
4388 lda $1, d($1) !gprellow
4389 lda $29, 0($29) !gpdisp!3],,
4390 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4391 [Define if your assembler supports explicit relocations.])])
4392 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4393 gcc_cv_as_alpha_jsrdirect_relocs,,
4396 ldq $27, a($29) !literal!1
4397 jsr $26, ($27), a !lituse_jsrdirect!1],,
4398 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4399 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4403 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,
4404 [--mlink-relax], [.text],,
4405 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4406 [Define if your avr assembler supports --mlink-relax option.])])
4408 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,
4410 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4411 [Define if your avr assembler supports -mrmw option.])])
4413 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4414 gcc_cv_as_avr_mgccisr,
4420 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4421 [Define if your avr assembler supports -mgcc-isr option.])])
4423 # Check how default linker description file implements .rodata for
4424 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4425 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4426 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4427 cat > conftest.s <<EOF
4428 .section .rodata,"a",@progbits
4430 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4435 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4436 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4437 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4438 if test -s conftest.nm
4440 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4442 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4443 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4445 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4446 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4447 cat conftest.nm >&AS_MESSAGE_LOG_FD
4448 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4449 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4452 AC_MSG_RESULT(test failed)
4453 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4454 cat conftest.s >&AS_MESSAGE_LOG_FD
4455 AC_MSG_WARN([[see `config.log' for details]])
4457 rm -f conftest.s conftest.o conftest.elf conftest.nm
4461 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4462 gcc_cv_as_cris_no_mul_bug,
4463 [-no-mul-bug-abort], [.text],,
4464 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4465 [Define if your assembler supports the -no-mul-bug-abort option.])])
4469 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,
4471 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4472 [Define if your assembler supports -relax option.])])
4474 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4475 gcc_cv_as_sparc_gotdata_op,
4482 sethi %gdop_hix22(foo), %g1
4483 xor %g1, %gdop_lox10(foo), %g1
4484 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4485 [if test x$gcc_cv_ld != x \
4486 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4487 if test x$gcc_cv_objdump != x; then
4488 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4489 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4490 gcc_cv_as_sparc_gotdata_op=no
4492 gcc_cv_as_sparc_gotdata_op=yes
4497 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4498 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4500 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4501 gcc_cv_as_sparc_ua_pcrel,
4509 .uaword %r_disp32(foo)],
4510 [if test x$gcc_cv_ld != x \
4511 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4512 gcc_cv_as_sparc_ua_pcrel=yes
4515 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4516 [Define if your assembler and linker support unaligned PC relative relocs.])
4518 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4519 gcc_cv_as_sparc_ua_pcrel_hidden,
4524 .uaword %r_disp32(foo)
4525 .byte 0x32, 0x33, 0x34
4530 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4531 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4532 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4533 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4534 if $gcc_cv_objdump -R conftest 2> /dev/null \
4535 | grep 'DISP32' > /dev/null 2>&1; then
4538 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4542 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4543 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4544 ]) # unaligned pcrel relocs
4546 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4547 gcc_cv_as_sparc_offsetable_lo10,
4550 or %g1, %lo(ab) + 12, %g1
4551 or %g1, %lo(ab + 12), %g1],
4552 [if test x$gcc_cv_objdump != x \
4553 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4554 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4555 gcc_cv_as_sparc_offsetable_lo10=yes
4557 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4558 [Define if your assembler supports offsetable %lo().])])
4560 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4561 gcc_cv_as_sparc_fmaf,
4564 .register %g2, #scratch
4565 .register %g3, #scratch
4567 fmaddd %f0, %f2, %f4, %f6
4568 addxccc %g1, %g2, %g3
4569 fsrl32 %f2, %f4, %f8
4570 fnaddd %f10, %f12, %f14],,
4571 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4572 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4574 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4575 gcc_cv_as_sparc_sparc4,
4578 .register %g2, #scratch
4579 .register %g3, #scratch
4582 1: cwbneg %g2, %g3, 1f
4585 aes_kexpand0 %f4, %f6, %f8
4586 des_round %f38, %f40, %f42, %f44
4587 camellia_f %f54, %f56, %f58, %f60
4588 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4589 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4590 [Define if your assembler supports SPARC4 instructions.])])
4592 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4593 gcc_cv_as_sparc_sparc5,
4596 .register %g2, #scratch
4597 .register %g3, #scratch
4600 fpadd8 %f0, %f2, %f4],,
4601 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4602 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4604 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4605 gcc_cv_as_sparc_sparc6,
4608 .register %g2, #scratch
4609 .register %g3, #scratch
4612 fpsll64x %f0, %f2, %f4],,
4613 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4614 [Define if your assembler supports SPARC6 instructions.])])
4616 gcc_GAS_CHECK_FEATURE([LEON instructions],
4617 gcc_cv_as_sparc_leon,
4620 .register %g2, #scratch
4621 .register %g3, #scratch
4625 casa [[%g2]] 0xb, %g3, %g1],,
4626 [AC_DEFINE(HAVE_AS_LEON, 1,
4627 [Define if your assembler supports LEON instructions.])])
4631 i[34567]86-*-* | x86_64-*-*)
4635 # Full C++ conformance when using a shared libstdc++-v3 requires some
4636 # support from the Cygwin DLL, which in more recent versions exports
4637 # wrappers to aid in interposing and redirecting operators new, delete,
4638 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4639 # are configuring for a version of Cygwin that exports the wrappers.
4640 if test x$host = x$target && test x$host_cpu = xi686; then
4641 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4643 # Can't check presence of libc functions during cross-compile, so
4644 # we just have to assume we're building for an up-to-date target.
4645 gcc_ac_cygwin_dll_wrappers=yes
4647 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4648 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4649 [Define if you want to generate code by default that assumes that the
4650 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4653 cygwin* | pe | mingw32*)
4654 # Recent binutils allows the three-operand form of ".comm" on PE. This
4655 # definition is used unconditionally to initialise the default state of
4656 # the target option variable that governs usage of the feature.
4657 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,,
4659 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4660 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4661 [Define if your assembler supports specifying the alignment
4662 of objects allocated using the GAS .comm command.])
4663 # Used for DWARF 2 in PE
4664 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4665 gcc_cv_as_ix86_pe_secrel32,,
4670 [if test x$gcc_cv_ld != x \
4671 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4672 gcc_cv_as_ix86_pe_secrel32=yes
4675 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4676 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4677 # Test if the assembler supports the extended form of the .section
4678 # directive that specifies section alignment. LTO support uses this,
4679 # but normally only after installation, so we warn but don't fail the
4680 # configure if LTO is enabled but the assembler does not support it.
4681 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4682 -fatal-warnings,[.section lto_test,"dr0"])
4683 if test x$gcc_cv_as_section_has_align != xyes; then
4684 case ",$enable_languages," in
4686 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4693 darwin2[[0-9]]* | darwin19*)
4694 gcc_GAS_CHECK_FEATURE([llvm assembler x86-pad-for-align option],
4695 gcc_cv_as_mllvm_x86_pad_for_align,
4696 [-mllvm -x86-pad-for-align=false], [.text],,
4697 [AC_DEFINE(HAVE_AS_MLLVM_X86_PAD_FOR_ALIGN, 1,
4698 [Define if your Mac OS X assembler supports -mllvm -x86-pad-for-align=false.])])
4702 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,
4703 [-xbrace_comment=no], [.text],,
4704 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4705 [Define if your assembler supports -xbrace_comment option.])])
4707 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4708 gcc_cv_as_ix86_filds,,
4709 [filds (%ebp); fists (%ebp)],,
4710 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4711 [Define if your assembler uses filds and fists mnemonics.])])
4713 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4714 gcc_cv_as_ix86_fildq,,
4715 [fildq (%ebp); fistpq (%ebp)],,
4716 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4717 [Define if your assembler uses fildq and fistq mnemonics.])])
4719 gcc_GAS_CHECK_FEATURE([cmov syntax],
4720 gcc_cv_as_ix86_cmov_sun_syntax,,
4721 [cmovl.l %edx, %eax],,
4722 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4723 [Define if your assembler supports the Sun syntax for cmov.])])
4725 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4726 gcc_cv_as_ix86_ffreep,,
4728 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4729 [Define if your assembler supports the ffreep mnemonic.])])
4731 gcc_GAS_CHECK_FEATURE([.quad directive],
4732 gcc_cv_as_ix86_quad,,
4734 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4735 [Define if your assembler supports the .quad directive.])])
4737 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4738 gcc_cv_as_ix86_sahf,,
4741 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4742 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4744 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4745 gcc_cv_as_ix86_interunit_movq,,
4749 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4750 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4751 [Define if your assembler supports interunit movq mnemonic.])
4753 gcc_GAS_CHECK_FEATURE([hle prefixes],
4754 gcc_cv_as_ix86_hle,,
4755 [lock xacquire cmpxchg %esi, (%ecx)],,
4756 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4757 [Define if your assembler supports HLE prefixes.])])
4759 gcc_GAS_CHECK_FEATURE([swap suffix],
4760 gcc_cv_as_ix86_swap,,
4761 [movl.s %esp, %ebp],,
4762 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4763 [Define if your assembler supports the swap suffix.])])
4765 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4766 gcc_cv_as_ix86_diff_sect_delta,,
4774 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4775 [Define if your assembler supports the subtraction of symbols in different sections.])])
4777 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4778 gcc_cv_as_ix86_rep_lock_prefix,,
4784 lock addl %edi, (%eax,%esi)
4785 lock orl $0, (%esp)],,
4786 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4787 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4789 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4790 gcc_cv_as_ix86_ud2,,
4792 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4793 [Define if your assembler supports the 'ud2' mnemonic.])])
4795 # Enforce 32-bit output with gas and gld.
4796 if test x$gas = xyes; then
4797 as_ix86_gas_32_opt="--32"
4799 if echo "$ld_ver" | grep GNU > /dev/null; then
4800 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4801 ld_ix86_gld_32_opt="-melf_i386_sol2"
4803 ld_ix86_gld_32_opt="-melf_i386"
4807 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4808 gcc_cv_as_ix86_tlsgdplt,
4809 [$as_ix86_gas_32_opt],
4810 [call tls_gd@tlsgdplt],
4811 [if test x$gcc_cv_ld != x \
4812 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4813 gcc_cv_as_ix86_tlsgdplt=yes
4816 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4817 [Define if your assembler and linker support @tlsgdplt.])])
4820 .section .tdata,"aw'$tls_section_flag'",@progbits
4822 .section .text,"ax",@progbits
4823 call tls_ld@tlsldmplt'
4825 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4826 gcc_cv_as_ix86_tlsldmplt,
4827 [$as_ix86_gas_32_opt],
4829 [if test x$gcc_cv_ld != x \
4830 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4831 gcc_cv_as_ix86_tlsldmplt=yes
4834 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4835 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4836 [Define to 1 if your assembler and linker support @tlsldmplt.])
4839 .section .text,"ax",@progbits
4841 .type _start, @function
4843 leal value@tlsldm(%ebx), %eax
4844 call ___tls_get_addr@plt
4846 .section .tdata,"aw'$tls_section_flag'",@progbits
4847 .type value, @object
4849 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4850 gcc_cv_as_ix86_tlsldm,
4851 [$as_ix86_gas_32_opt],
4853 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4854 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4855 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4856 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4857 gcc_cv_as_ix86_tlsldm=yes
4861 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4862 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4863 [Define to 1 if your assembler and linker support @tlsldm.])
4874 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4875 gcc_cv_as_ix86_got32x,
4876 [$as_ix86_gas_32_opt],
4878 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4879 && test x$gcc_cv_readelf != x \
4880 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4881 | grep R_386_GOT32X > /dev/null 2>&1 \
4882 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4883 if $gcc_cv_objdump -dw conftest 2>&1 \
4884 | grep 0xffffff > /dev/null 2>&1; then
4885 gcc_cv_as_ix86_got32x=no
4887 gcc_cv_as_ix86_got32x=yes
4891 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4892 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4893 [Define 0/1 if your assembler and linker support @GOT.])
4895 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4896 gcc_cv_as_ix86_gotoff_in_data,
4897 [$as_ix86_gas_32_opt],
4903 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4904 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4905 [Define true if the assembler supports '.long foo@GOTOFF'.])
4908 .section .text,"ax",@progbits
4910 .type _start, @function
4912 leal ld@tlsldm(%ecx), %eax
4913 call *___tls_get_addr@GOT(%ecx)
4914 leal gd@tlsgd(%ecx), %eax
4915 call *___tls_get_addr@GOT(%ecx)
4917 .section .tdata,"aw'$tls_section_flag'",@progbits
4925 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4926 gcc_cv_as_ix86_tls_get_addr_via_got,
4927 [$as_ix86_gas_32_opt],
4929 [if test x$gcc_cv_ld != x \
4930 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4931 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4934 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4935 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4936 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4940 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4941 gcc_cv_as_ia64_ltoffx_ldxmov_relocs,,
4943 addl r15 = @ltoffx(x#), gp
4945 ld8.mov r16 = [[r15]], x#
4947 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4948 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4956 gcc_GAS_CHECK_FEATURE([.machine directive support],
4957 gcc_cv_as_machine_directive,,
4958 [ .machine ppc7400])
4959 if test x$gcc_cv_as_machine_directive != xyes; then
4960 echo "*** This target requires an assembler supporting \".machine\"" >&2
4961 echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4962 test x$build = x$target && exit 1
4968 *-*-aix*) conftest_s=' .machine "pwr5"
4971 *-*-darwin*) conftest_s=' .text
4973 *) conftest_s=' .machine power4
4978 gcc_GAS_CHECK_FEATURE([mfcr field support],
4979 gcc_cv_as_powerpc_mfcrf,,
4981 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4982 [Define if your assembler supports mfcr field.])])
4985 *-*-aix*) conftest_s=' .csect .text[[PR]]
4987 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4991 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4992 *) conftest_s=' .text
4994 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4997 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4998 gcc_cv_as_powerpc_rel16, -a32,
5000 [AC_DEFINE(HAVE_AS_REL16, 1,
5001 [Define if your assembler supports R_PPC_REL16 relocs.])])
5004 *-*-aix*) conftest_s=' .machine "pwr7"
5007 *) conftest_s=' .machine power7
5012 gcc_GAS_CHECK_FEATURE([vector-scalar support],
5013 gcc_cv_as_powerpc_vsx, -a32,
5015 [AC_DEFINE(HAVE_AS_VSX, 1,
5016 [Define if your assembler supports VSX instructions.])])
5018 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5019 gcc_cv_as_powerpc_gnu_attribute,,
5020 [.gnu_attribute 4,1],,
5021 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5022 [Define if your assembler supports .gnu_attribute.])])
5024 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
5025 gcc_cv_as_powerpc_entry_markers,-a64 --fatal-warnings,
5026 [ .reloc .,R_PPC64_ENTRY; nop],,
5027 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
5028 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
5030 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
5031 gcc_cv_as_powerpc_pltseq_markers,-a32 --fatal-warnings,
5032 [ .reloc .,R_PPC_PLTSEQ; nop],,
5033 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
5034 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
5038 gcc_GAS_CHECK_FEATURE([AIX .ref support],
5040 [ .csect stuff[[rw]]
5046 [AC_DEFINE(HAVE_AS_REF, 1,
5047 [Define if your assembler supports .ref])])
5049 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
5050 gcc_cv_as_aix_dwloc,,
5055 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
5056 [Define if your assembler supports AIX debug frame section label reference.])])
5062 gcc_GAS_CHECK_FEATURE([explicit relocation support],
5063 gcc_cv_as_mips_explicit_relocs,,
5064 [ lw $4,%gp_rel(foo)($4)],,
5065 [if test x$target_cpu_default = x
5066 then target_cpu_default=MASK_EXPLICIT_RELOCS
5067 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
5070 gcc_GAS_CHECK_FEATURE([-mno-shared support],
5071 gcc_cv_as_mips_no_shared,[-mno-shared], [nop],,
5072 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
5073 [Define if the assembler understands -mno-shared.])])
5075 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5076 gcc_cv_as_mips_gnu_attribute,,
5077 [.gnu_attribute 4,1],,
5078 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5079 [Define if your assembler supports .gnu_attribute.])])
5081 gcc_GAS_CHECK_FEATURE([.module support],
5082 gcc_cv_as_mips_dot_module,[-32],
5085 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
5086 [Define if your assembler supports .module.])])
5087 if test x$gcc_cv_as_mips_dot_module = xno \
5088 && test x$with_fp_32 != x; then
5090 [Requesting --with-fp-32= requires assembler support for .module.])
5093 gcc_GAS_CHECK_FEATURE([.micromips support],
5094 gcc_cv_as_micromips_support,[--fatal-warnings],
5096 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
5097 [Define if your assembler supports the .set micromips directive])])
5099 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5100 gcc_cv_as_mips_dtprelword,,
5101 [.section .tdata,"awT",@progbits
5105 .dtprelword x+0x8000],,
5106 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5107 [Define if your assembler supports .dtprelword.])])
5109 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
5110 gcc_cv_as_mips_dspr1_mult,,
5120 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
5121 [Define if your assembler supports DSPR1 mult.])])
5123 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
5124 gcc_cv_as_ld_jalr_reloc=no
5125 if test $gcc_cv_as_mips_explicit_relocs = yes; then
5126 if test $in_tree_ld = yes ; then
5127 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
5128 && test $in_tree_ld_is_elf = yes; then
5129 gcc_cv_as_ld_jalr_reloc=yes
5131 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
5132 echo ' .ent x' > conftest.s
5133 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
5134 echo ' lw $25,%call16(y)($28)' >> conftest.s
5135 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
5136 echo '1: jalr $25' >> conftest.s
5137 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
5138 echo '1: jalr $25' >> conftest.s
5139 echo ' .end x' >> conftest.s
5140 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
5141 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
5142 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
5143 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
5144 gcc_cv_as_ld_jalr_reloc=yes
5150 if test $gcc_cv_as_ld_jalr_reloc = yes; then
5151 if test x$target_cpu_default = x; then
5152 target_cpu_default=MASK_RELAX_PIC_CALLS
5154 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
5157 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
5159 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
5160 [gcc_cv_ld_mips_personality_relaxation],
5161 [gcc_cv_ld_mips_personality_relaxation=no
5162 if test $in_tree_ld = yes ; then
5163 if test "$gcc_cv_gld_major_version" -eq 2 \
5164 -a "$gcc_cv_gld_minor_version" -ge 21 \
5165 -o "$gcc_cv_gld_major_version" -gt 2; then
5166 gcc_cv_ld_mips_personality_relaxation=yes
5168 elif test x$gcc_cv_as != x \
5169 -a x$gcc_cv_ld != x \
5170 -a x$gcc_cv_readelf != x ; then
5171 cat > conftest.s <<EOF
5173 .cfi_personality 0x80,indirect_ptr
5180 .section .data,"aw",@progbits
5184 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
5185 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
5186 if $gcc_cv_readelf -d conftest 2>&1 \
5187 | grep TEXTREL > /dev/null 2>&1; then
5189 elif $gcc_cv_readelf --relocs conftest 2>&1 \
5190 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
5193 gcc_cv_ld_mips_personality_relaxation=yes
5197 rm -f conftest.s conftest.o conftest])
5198 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
5199 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
5200 [Define if your linker can relax absolute .eh_frame personality
5201 pointers into PC-relative form.])
5204 gcc_GAS_CHECK_FEATURE([-mnan= support],
5207 [AC_DEFINE(HAVE_AS_NAN, 1,
5208 [Define if the assembler understands -mnan=.])])
5209 if test x$gcc_cv_as_mips_nan = xno \
5210 && test x$with_nan != x; then
5212 [Requesting --with-nan= requires assembler support for -mnan=])
5216 # Earlier GAS versions generically support .gnu_attribute, but the
5217 # msp430 assembler will not do anything with it.
5218 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5219 gcc_cv_as_msp430_gnu_attribute,,
5220 [.gnu_attribute 4,1],,
5221 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5222 [Define if your assembler supports .gnu_attribute.])])
5223 gcc_GAS_CHECK_FEATURE([.mspabi_attribute support],
5224 gcc_cv_as_msp430_mspabi_attribute,,
5225 [.mspabi_attribute 4,2],,
5226 [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1,
5227 [Define if your assembler supports .mspabi_attribute.])])
5228 if test x$enable_newlib_nano_formatted_io = xyes; then
5229 AC_DEFINE(HAVE_NEWLIB_NANO_FORMATTED_IO, 1, [Define if GCC has been
5230 configured with --enable-newlib-nano-formatted-io.])
5234 # Versions 2.33 and earlier lacked support for the %gotoff relocation
5235 # syntax that is documented in the ABI specification.
5236 gcc_GAS_CHECK_FEATURE([support for %gotoff relocations in constant data],
5237 gcc_cv_as_nios2_gotoff_relocation,,
5240 .long %gotoff(foo)],,
5241 [AC_DEFINE(HAVE_AS_NIOS2_GOTOFF_RELOCATION, 1,
5242 [Define if your assembler supports %gotoff relocation syntax.])])
5245 gcc_GAS_CHECK_FEATURE([.attribute support],
5246 gcc_cv_as_riscv_attribute,,
5247 [.attribute stack_align,4],,
5248 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1,
5249 [Define if your assembler supports .attribute.])])
5250 gcc_GAS_CHECK_FEATURE([-misa-spec= support],
5251 gcc_cv_as_riscv_isa_spec,
5253 [AC_DEFINE(HAVE_AS_MISA_SPEC, 1,
5254 [Define if the assembler understands -misa-spec=.])])
5255 gcc_GAS_CHECK_FEATURE([-march=rv32i_zifencei support],
5256 gcc_cv_as_riscv_march_zifencei,
5257 [-march=rv32i_zifencei],,,
5258 [AC_DEFINE(HAVE_AS_MARCH_ZIFENCEI, 1,
5259 [Define if the assembler understands -march=rv*_zifencei.])])
5262 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5263 gcc_cv_as_s390_gnu_attribute,,
5264 [.gnu_attribute 8,1],,
5265 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5266 [Define if your assembler supports .gnu_attribute.])])
5267 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
5268 gcc_cv_as_s390_machine_machinemode,,
5273 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
5274 [Define if your assembler supports .machine and .machinemode.])])
5275 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
5276 gcc_cv_as_s390_architecture_modifiers,,
5277 [ .machine z13+vx ],,
5278 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
5279 [Define if your assembler supports architecture modifiers.])])
5280 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
5281 gcc_cv_as_s390_vector_loadstore_alignment_hints,,
5282 [ vl %v24,0(%r15),3 ],,
5283 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
5284 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
5285 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints on z13],
5286 gcc_cv_as_s390_vector_loadstore_alignment_hints_on_z13, [-mzarch -march=z13],
5287 [ vl %v24,0(%r15),3 ],,
5288 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS_ON_Z13, 1,
5289 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument on z13.])])
5294 # Mips and HP-UX need the GNU assembler.
5295 # Linux on IA64 might be able to use the Intel assembler.
5298 mips*-*-* | *-*-hpux* )
5299 if test x$gas_flag = xyes \
5300 || test x"$host" != x"$build" \
5301 || test ! -x "$gcc_cv_as" \
5302 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
5305 echo "*** This configuration requires the GNU assembler" >&2
5311 # This tests if the assembler supports two registers for global_load functions
5312 # (like in LLVM versions <12) or one register (like in LLVM 12).
5315 AC_MSG_CHECKING(assembler fix for global_load functions)
5316 gcc_cv_as_gcn_global_load_fixed=yes
5317 if test x$gcc_cv_as != x; then
5318 cat > conftest.s <<EOF
5319 global_store_dwordx2 v[[1:2]], v[[4:5]], s[[14:15]]
5321 if $gcc_cv_as -triple=amdgcn--amdhsa -filetype=obj -mcpu=gfx900 -o conftest.o conftest.s > /dev/null 2>&1; then
5322 gcc_cv_as_gcn_global_load_fixed=no
5324 rm -f conftest.s conftest.o conftest
5326 global_load_fixed=`if test x$gcc_cv_as_gcn_global_load_fixed = xyes; then echo 1; else echo 0; fi`
5327 AC_DEFINE_UNQUOTED(HAVE_GCN_ASM_GLOBAL_LOAD_FIXED, $global_load_fixed,
5328 [Define if your assembler has fixed global_load functions.])
5329 AC_MSG_RESULT($gcc_cv_as_gcn_global_load_fixed)
5335 # Test the LLVM assembler syntax dialect; they have made a number of
5336 # changes between LLVM 12 & 13 without any backward compatibility.
5337 gcc_GAS_CHECK_FEATURE([assembler amdgcn_target v2/3 syntax],
5338 gcc_cv_as_gcn_asm_v3_syntax,
5339 [-triple=amdgcn--amdhsa -mcpu=gfx906 -mattr=+xnack],
5340 [.amdgcn_target "amdgcn-unknown-amdhsa--gfx906+xnack"],,
5341 [AC_DEFINE(HAVE_GCN_ASM_V3_SYNTAX, 1,
5342 [Define if your assembler expects amdgcn_target gfx908+xnack syntax.])])
5343 gcc_GAS_CHECK_FEATURE([assembler amdgcn_target v4 syntax],
5344 gcc_cv_as_gcn_asm_v4_syntax,
5345 [-triple=amdgcn--amdhsa -mcpu=gfx908 -mattr=+xnack],
5346 [.amdgcn_target "amdgcn-unknown-amdhsa--gfx908:xnack+"],,
5347 [AC_DEFINE(HAVE_GCN_ASM_V4_SYNTAX, 1,
5348 [Define if your assembler expects amdgcn_target gfx908:xnack+ syntax.])])
5350 # Some attribute names changed in the move to v4 ...
5351 if test $gcc_cv_as_gcn_asm_v3_syntax = yes; then
5353 sramattr="+sram-ecc"
5355 elif test $gcc_cv_as_gcn_asm_v4_syntax = yes; then
5357 sramattr=":sramecc+"
5360 AC_MSG_ERROR([Unrecognised assembler version])
5363 # Test whether the LLVM assembler accepts -mattr=+xnack without any
5364 # diagnostic. LLVM 9 & 10 accept the option whether it makes sense or not,
5365 # LLVM 12+ throws a warning for GPUs without support.
5366 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+xnack for fiji],
5367 gcc_cv_as_gcn_xnack_ecc_fiji,
5368 [-triple=amdgcn--amdhsa -mcpu=fiji -mattr=+xnack 2>conftest.err], [],
5369 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5370 || gcc_cv_as_gcn_xnack_ecc_fiji=yes],
5371 [AC_DEFINE(HAVE_GCN_XNACK_FIJI, 1,
5372 [Define if your assembler allows -mattr=+xnack for fiji.])])
5374 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+xnack for gfx900],
5375 gcc_cv_as_gcn_xnack_ecc_gfx900,
5376 [-triple=amdgcn--amdhsa -mcpu=gfx900 -mattr=+xnack 2>conftest.err], [],
5377 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5378 || gcc_cv_as_gcn_xnack_ecc_gfx900=yes],
5379 [AC_DEFINE(HAVE_GCN_XNACK_GFX900, 1,
5380 [Define if your assembler allows -mattr=+xnack for gfx900.])])
5382 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+xnack for gfx906],
5383 gcc_cv_as_gcn_xnack_ecc_gfx906,
5384 [-triple=amdgcn--amdhsa -mcpu=gfx906 -mattr=+xnack 2>conftest.err], [],
5385 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5386 || gcc_cv_as_gcn_xnack_ecc_gfx906=yes],
5387 [AC_DEFINE(HAVE_GCN_XNACK_GFX906, 1,
5388 [Define if your assembler allows -mattr=+xnack for gfx906.])])
5390 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+xnack for gfx908],
5391 gcc_cv_as_gcn_xnack_ecc_gfx908,
5392 [-triple=amdgcn--amdhsa -mcpu=gfx908 -mattr=+xnack 2>conftest.err], [],
5393 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5394 || gcc_cv_as_gcn_xnack_ecc_gfx908=yes],
5395 [AC_DEFINE(HAVE_GCN_XNACK_GFX908, 1,
5396 [Define if your assembler allows -mattr=+xnack for gfx908.])])
5399 # Test whether the LLVM assembler accepts -mattr=+sramecc without any
5400 # diagnostic. LLVM 9 & 10 accept the option whether it makes sense or not,
5401 # (some?) LLVM 12 rejects it for all GPUs, and LLVM13 throws a warning
5402 # for GPUs without support.
5403 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=$sramopt for fiji],
5404 gcc_cv_as_gcn_sram_ecc_fiji,
5405 [-triple=amdgcn--amdhsa -mcpu=fiji -mattr=$sramopt 2>conftest.err], [],
5406 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5407 || gcc_cv_as_gcn_sram_ecc_fiji=yes],
5408 [AC_DEFINE(HAVE_GCN_SRAM_ECC_FIJI, 1,
5409 [Define if your assembler allows -mattr=+sramecc for fiji.])])
5411 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=$sramopt for gfx900],
5412 gcc_cv_as_gcn_sram_ecc_gfx900,
5413 [-triple=amdgcn--amdhsa -mcpu=gfx900 -mattr=$sramopt 2>conftest.err], [],
5414 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5415 || gcc_cv_as_gcn_sram_ecc_gfx900=yes],
5416 [AC_DEFINE(HAVE_GCN_SRAM_ECC_GFX900, 1,
5417 [Define if your assembler allows -mattr=+sramecc for gfx900.])])
5419 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=$sramopt for gfx906],
5420 gcc_cv_as_gcn_sram_ecc_gfx906,
5421 [-triple=amdgcn--amdhsa -mcpu=gfx906 -mattr=$sramopt 2>conftest.err], [],
5422 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5423 || gcc_cv_as_gcn_sram_ecc_gfx906=yes],
5424 [AC_DEFINE(HAVE_GCN_SRAM_ECC_GFX906, 1,
5425 [Define if your assembler allows -mattr=+sramecc for gfx906.])])
5427 gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=$sramopt for gfx908],
5428 gcc_cv_as_gcn_sram_ecc_gfx908,
5429 [-triple=amdgcn--amdhsa -mcpu=gfx908 -mattr=$sramopt 2>conftest.err], [],
5430 [grep "." conftest.err >&AS_MESSAGE_LOG_FD \
5431 || gcc_cv_as_gcn_sram_ecc_gfx908=yes],
5432 [AC_DEFINE(HAVE_GCN_SRAM_ECC_GFX908, 1,
5433 [Define if your assembler allows -mattr=+sramecc for gfx908.])])
5437 gcc_GAS_CHECK_FEATURE([assembler for arm accepts context-specific architecture extensions],
5438 gcc_cv_as_arm_option_extensions,
5439 [-march=armv8.1-m.main+mve],
5444 [AC_DEFINE(HAVE_GAS_ARM_EXTENDED_ARCH, 1,
5445 [Define if your Arm assembler permits context-specific feature extensions.])])
5448 # ??? Not all targets support dwarf2 debug_line, even within a version
5449 # of gas. Moreover, we need to emit a valid instruction to trigger any
5450 # info to the output file. So, as supported targets are added to gas 2.11,
5451 # add some instruction here to (also) show we expect this might work.
5452 # ??? Once 2.11 is released, probably need to add first known working
5453 # version to the per-target configury.
5455 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \
5456 | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \
5457 | tilegx | tilepro | visium | xstormy16 | xtensa)
5467 if test x"$insn" != x; then
5469 .file 1 \"conftest.s\"
5472 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
5473 gcc_cv_as_dwarf2_debug_line,,
5475 [if test x$gcc_cv_objdump != x \
5476 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
5477 | grep debug_line > /dev/null 2>&1; then
5478 gcc_cv_as_dwarf2_debug_line=yes
5479 elif test x$gcc_cv_otool != x \
5480 && $gcc_cv_otool -l conftest.o 2> /dev/null \
5481 | grep debug_line > /dev/null 2>&1; then
5482 gcc_cv_as_dwarf2_debug_line=yes
5485 # The .debug_line file table must be in the exact order that
5486 # we specified the files, since these indices are also used
5487 # by DW_AT_decl_file. Approximate this test by testing if
5488 # the assembler bitches if the same index is assigned twice.
5489 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
5490 gcc_cv_as_dwarf2_file_buggy,,
5494 if test $gcc_cv_as_dwarf2_debug_line = yes \
5495 && test $gcc_cv_as_dwarf2_file_buggy = no; then
5496 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
5497 [Define if your assembler supports dwarf2 .file/.loc directives,
5498 and preserves file table indices exactly as given.])
5500 if test $gcc_cv_as_leb128 = yes; then
5502 .file 1 \"conftest.s\"
5503 .loc 1 3 0 view .LVU1
5509 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
5510 gcc_cv_as_dwarf2_debug_view,,
5512 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
5513 [Define if your assembler supports views in dwarf2 .loc directives.])])
5517 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
5518 gcc_cv_as_gdwarf2_flag,
5519 [--gdwarf2], [$insn],,
5520 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5521 [Define if your assembler supports the --gdwarf2 option.])])
5523 gcc_GAS_CHECK_FEATURE([--gdwarf-5 option],
5524 gcc_cv_as_gdwarf_5_flag,
5525 [--gdwarf-5], [$insn],
5526 [if test x$gcc_cv_objdump != x \
5527 && $gcc_cv_objdump -Wi conftest.o 2>&1 \
5528 | grep DW_TAG_compile_unit > /dev/null 2>&1; then
5529 gcc_cv_as_gdwarf_5_flag=yes;
5530 fi],[AC_DEFINE(HAVE_AS_GDWARF_5_DEBUG_FLAG, 1,
5531 [Define if your assembler supports the --gdwarf-5 option.])])
5534 win32 | pe | cygwin* | mingw32*)
5535 section_flags=\"dr\"
5536 function_type=".def foo; .scl 2; .type 32; .endef"
5539 section_flags=\"\",%progbits
5540 function_type=".type foo, %function"
5541 function_size=".size foo, .-foo";;
5543 dwarf4_debug_info_size=0x46
5544 dwarf4_high_pc_form=7
5545 dwarf4_debug_aranges_size=0x2c
5547 for dwarf4_addr_size in 8 4; do
5563 .section .debug_info,$section_flags
5565 .4byte $dwarf4_debug_info_size
5567 .4byte .Ldebug_abbrev0
5568 .byte 0x$dwarf4_addr_size
5570 .ascii \"GNU C17\\0\"
5574 .${dwarf4_addr_size}byte .Ltext0
5575 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5576 .4byte .Ldebug_line0
5582 .${dwarf4_addr_size}byte .LFB0
5583 .${dwarf4_addr_size}byte .LFE0-.LFB0
5587 .section .debug_abbrev,$section_flags
5603 .byte 0x$dwarf4_high_pc_form
5624 .byte 0x$dwarf4_high_pc_form
5630 .section .debug_aranges,$section_flags
5631 .4byte $dwarf4_debug_aranges_size
5633 .4byte .Ldebug_info0
5638 .${dwarf4_addr_size}byte .Ltext0
5639 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5640 .${dwarf4_addr_size}byte 0
5641 .${dwarf4_addr_size}byte 0
5642 .section .debug_line,$section_flags
5644 .4byte .LELT0-.LSLT0
5647 .4byte .LELTP0-.LASLTP0
5675 .byte 0x$dwarf4_line_sz
5677 .${dwarf4_addr_size}byte .LM1
5682 .byte 0x$dwarf4_line_sz
5684 .${dwarf4_addr_size}byte .LM2
5689 .byte 0x$dwarf4_line_sz
5691 .${dwarf4_addr_size}byte .Letext0
5696 .section .debug_str,$section_flags
5700 if test $dwarf4_addr_size = 4; then
5701 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 32-bit .debug_line],
5702 gcc_cv_as_debug_line_32_flag,,
5704 [dwarf4_success=yes])
5706 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 64-bit .debug_line],
5707 gcc_cv_as_debug_line_64_flag,,
5709 [dwarf4_success=yes])
5711 if test $dwarf4_success = yes; then
5713 gcc_GAS_CHECK_FEATURE([--gdwarf-4 not refusing compiler generated .debug_line],
5714 gcc_cv_as_dwarf_4_debug_line_flag,
5715 [--gdwarf-4], [$conftest_s],,
5716 [dwarf4_success=yes])
5719 dwarf4_debug_info_size=0x36
5720 dwarf4_high_pc_form=6
5721 dwarf4_debug_aranges_size=0x1c
5725 if test $dwarf4_success = yes; then
5743 gcc_GAS_CHECK_FEATURE([--gdwarf-4 with the APP marker],
5744 gcc_cv_as_dwarf_4_app_flag,
5745 [--gdwarf-4], [$conftest_s],, [dwarf4_success=yes])
5748 if test $dwarf4_success = yes; then
5758 gcc_GAS_CHECK_FEATURE([working --gdwarf-4/--gdwarf-5 for all sources],
5759 gcc_cv_as_working_gdwarf_n_flag,
5763 if test x$gcc_cv_objdump != x \
5764 && $gcc_cv_objdump -W conftest.o 2>&1 \
5765 | grep conftest.s > /dev/null 2>&1; then
5766 gcc_cv_as_working_gdwarf_n_flag=no
5768 gcc_cv_as_working_gdwarf_n_flag=yes
5770 changequote([,])dnl])
5771 if test $gcc_cv_as_working_gdwarf_n_flag = yes; then
5772 AC_DEFINE(HAVE_AS_WORKING_DWARF_N_FLAG, 1,
5773 [Define if your assembler supports --gdwarf-4/--gdwarf-5 even with
5774 compiler generated .debug_line.])
5778 gcc_GAS_CHECK_FEATURE([--gstabs option],
5779 gcc_cv_as_gstabs_flag,
5780 [--gstabs], [$insn],,
5781 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
5782 [Define if your assembler supports the --gstabs option.])])
5784 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5785 gcc_cv_as_debug_prefix_map_flag,
5786 [--debug-prefix-map /a=/b], [$insn],,
5787 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5788 [Define if your assembler supports the --debug-prefix-map option.])])
5791 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5792 gcc_cv_as_compress_debug,,,
5793 [# gas compiled without zlib cannot compress debug sections and warns
5794 # about it, but still exits successfully. So check for this, too.
5795 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5797 gcc_cv_as_compress_debug=0
5798 # Since binutils 2.26, gas supports --compress-debug-sections=type,
5799 # defaulting to the ELF gABI format.
5800 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
5802 gcc_cv_as_compress_debug=2
5803 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5804 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5805 # Before binutils 2.26, gas only supported --compress-debug-options and
5806 # emitted the traditional GNU format.
5807 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
5809 gcc_cv_as_compress_debug=1
5810 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5811 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5813 gcc_cv_as_compress_debug=0
5815 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5816 [Define to the level of your assembler's compressed debug section support.])
5817 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5818 [Define to the assembler option to enable compressed debug sections.])
5819 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5820 [Define to the assembler option to disable compressed debug sections.])
5822 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,,
5824 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5825 [Define if your assembler supports .lcomm with an alignment field.])])
5827 if test x$with_sysroot = x && test x$host = x$target \
5828 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5829 && test "$prefix" != "NONE"; then
5830 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5831 [Define to PREFIX/include if cpp should also search that directory.])
5834 # Determine the version of glibc, if any, used on the target.
5835 AC_MSG_CHECKING([for target glibc version])
5836 AC_ARG_WITH([glibc-version],
5837 [AS_HELP_STRING([--with-glibc-version=M.N],
5838 [assume GCC used with glibc version M.N or later])], [
5839 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5840 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5841 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5843 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5845 glibc_version_major=0
5846 glibc_version_minor=0
5847 [if test -f $target_header_dir/features.h \
5848 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5849 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5850 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5851 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5853 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5854 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5855 [GNU C Library major version number used on the target, or 0.])
5856 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5857 [GNU C Library minor version number used on the target, or 0.])
5859 AC_ARG_ENABLE(gnu-unique-object,
5860 [AS_HELP_STRING([--enable-gnu-unique-object],
5861 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5862 [case $enable_gnu_unique_object in
5864 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5865 Valid choices are 'yes' and 'no'.]) ;;
5867 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,,
5868 [.type foo, '$target_type_format_char'gnu_unique_object],,
5869 # We need to unquote above to to use the definition from config.gcc.
5870 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5871 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5873 if test x$enable_gnu_unique_object = xyes; then
5874 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5875 [Define if your assembler supports @gnu_unique_object.])
5878 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5879 [gcc_cv_as_line_zero],
5880 [gcc_cv_as_line_zero=no
5881 if test "x$gcc_cv_as" != x; then
5882 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5883 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5884 test "x`cat conftest.out`" = x
5886 gcc_cv_as_line_zero=yes
5888 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5889 cat conftest.s >&AS_MESSAGE_LOG_FD
5890 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5891 cat conftest.out >&AS_MESSAGE_LOG_FD
5893 rm -f conftest.o conftest.s conftest.out
5895 if test "x$gcc_cv_as_line_zero" = xyes; then
5896 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5897 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5900 AC_MSG_CHECKING(support for thin archives)
5901 thin_archive_support=no
5902 echo 'int main (void) { return 0; }' > conftest.c
5903 if ($AR --version | sed 1q | grep "GNU ar" \
5904 && $CC $CFLAGS -c conftest.c \
5905 && $AR rcT conftest.a conftest.o \
5906 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5907 thin_archive_support=yes
5909 rm -f conftest.c conftest.o conftest.a conftest
5910 AC_MSG_RESULT($thin_archive_support)
5911 AC_SUBST(thin_archive_support)
5913 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5914 gcc_cv_ld_eh_frame_hdr=no
5915 if test $in_tree_ld = yes ; then
5916 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5917 && test $in_tree_ld_is_elf = yes; then
5918 gcc_cv_ld_eh_frame_hdr=yes
5920 elif test x$gcc_cv_ld != x; then
5921 if echo "$ld_ver" | grep GNU > /dev/null; then
5922 # Check if linker supports --eh-frame-hdr option
5923 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5924 gcc_cv_ld_eh_frame_hdr=yes
5929 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5930 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5931 gcc_cv_ld_eh_frame_hdr=yes
5937 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5938 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5939 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5940 [Define if your linker supports .eh_frame_hdr.])
5942 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5944 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5945 gcc_cv_ld_eh_frame_ciev3=no
5946 if test $in_tree_ld = yes ; then
5947 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5948 && test $in_tree_ld_is_elf = yes; then
5949 gcc_cv_ld_eh_frame_ciev3=yes
5951 elif test x$gcc_cv_ld != x; then
5952 if echo "$ld_ver" | grep GNU > /dev/null; then
5953 gcc_cv_ld_eh_frame_ciev3=yes
5954 if test 0"$ld_date" -lt 20040513; then
5955 if test -n "$ld_date"; then
5956 # If there was date string, but was earlier than 2004-05-13, fail
5957 gcc_cv_ld_eh_frame_ciev3=no
5958 elif test "$ld_vers_major" -lt 2; then
5959 gcc_cv_ld_eh_frame_ciev3=no
5960 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5961 gcc_cv_ld_eh_frame_ciev3=no
5967 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5968 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5969 gcc_cv_ld_eh_frame_ciev3=yes
5975 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5976 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5977 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5978 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5980 AC_MSG_CHECKING(linker position independent executable support)
5982 if test $in_tree_ld = yes ; then
5984 # Full PIE support on Solaris was only introduced in gld 2.26.
5985 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5986 *) gcc_gld_pie_min_version=15 ;;
5988 if test "$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 \
5989 && test $in_tree_ld_is_elf = yes; then
5992 elif test x$gcc_cv_ld != x; then
5993 # Check if linker supports -pie option
5994 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5998 if echo "$ld_ver" | grep GNU > /dev/null \
5999 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
6006 *-*-solaris2.1[[1-9]]*)
6007 # Solaris 11.3 added PIE support.
6008 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
6015 if test x"$gcc_cv_ld_pie" = xyes; then
6016 AC_DEFINE(HAVE_LD_PIE, 1,
6017 [Define if your linker supports PIE option.])
6019 AC_MSG_RESULT($gcc_cv_ld_pie)
6021 AC_MSG_CHECKING(linker PIE support with copy reloc)
6022 gcc_cv_ld_pie_copyreloc=no
6023 if test $gcc_cv_ld_pie = yes ; then
6024 if test $in_tree_ld = yes ; then
6025 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6026 gcc_cv_ld_pie_copyreloc=yes
6028 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6029 # Check if linker supports -pie option with copy reloc
6031 i?86-*-linux* | x86_64-*-linux*)
6032 cat > conftest1.s <<EOF
6035 .type a_glob, @object
6040 cat > conftest2.s <<EOF
6043 .type main, @function
6045 movl %eax, a_glob(%rip)
6048 .section .data.rel,"aw",@progbits
6053 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6054 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
6055 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6056 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
6057 gcc_cv_ld_pie_copyreloc=yes
6059 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
6064 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
6065 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
6066 [Define 0/1 if your linker supports -pie option with copy reloc.])
6067 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
6069 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
6070 gcc_cv_ld_eh_gc_sections=no
6071 if test $in_tree_ld = yes ; then
6072 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
6073 && test $in_tree_ld_is_elf = yes; then
6074 gcc_cv_ld_eh_gc_sections=yes
6076 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
6077 cat > conftest.s <<EOF
6080 .type _start, @function
6083 .size _start, .-_start
6084 .section .text.foo,"ax",@progbits
6085 .type foo, @function
6089 .section .gcc_except_table.foo,"a",@progbits
6092 .section .eh_frame,"a",@progbits
6095 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6096 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6097 | grep "gc-sections option ignored" > /dev/null; then
6098 gcc_cv_ld_eh_gc_sections=no
6099 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6100 | grep gcc_except_table > /dev/null; then
6101 gcc_cv_ld_eh_gc_sections=yes
6102 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
6103 if test x$gcc_cv_as_comdat_group != xyes; then
6104 gcc_cv_ld_eh_gc_sections=no
6105 cat > conftest.s <<EOF
6108 .type _start, @function
6111 .size _start, .-_start
6112 .section .gnu.linkonce.t.foo,"ax",@progbits
6113 .type foo, @function
6117 .section .gcc_except_table.foo,"a",@progbits
6120 .section .eh_frame,"a",@progbits
6123 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6124 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6125 | grep "gc-sections option ignored" > /dev/null; then
6126 gcc_cv_ld_eh_gc_sections=no
6127 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6128 | grep gcc_except_table > /dev/null; then
6129 gcc_cv_ld_eh_gc_sections=yes
6135 rm -f conftest.s conftest.o conftest
6139 # ??? This apparently exposes a binutils bug with PC-relative relocations.
6140 gcc_cv_ld_eh_gc_sections=no
6143 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
6144 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
6145 [Define if your linker supports garbage collection of
6146 sections in presence of EH frames.])
6148 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
6150 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
6151 gcc_cv_ld_eh_gc_sections_bug=no
6152 if test $in_tree_ld = yes ; then
6153 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
6154 && test $in_tree_ld_is_elf = yes; then
6155 gcc_cv_ld_eh_gc_sections_bug=yes
6157 elif test x$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
6158 gcc_cv_ld_eh_gc_sections_bug=yes
6159 cat > conftest.s <<EOF
6162 .type _start, @function
6165 .size _start, .-_start
6166 .section .text.startup.foo,"ax",@progbits
6167 .type foo, @function
6171 .section .gcc_except_table.foo,"a",@progbits
6174 .section .eh_frame,"a",@progbits
6177 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
6178 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
6179 | grep "gc-sections option ignored" > /dev/null; then
6181 elif $gcc_cv_objdump -h conftest 2> /dev/null \
6182 | grep gcc_except_table > /dev/null; then
6183 gcc_cv_ld_eh_gc_sections_bug=no
6186 rm -f conftest.s conftest.o conftest
6188 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
6189 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
6190 [Define if your linker has buggy garbage collection of
6191 sections support when .text.startup.foo like sections are used.])
6193 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
6195 AC_MSG_CHECKING(linker for compressed debug sections)
6196 # gold/gld support compressed debug sections since binutils 2.19/2.21
6197 # In binutils 2.26, gld gained support for the ELF gABI format.
6198 if test $in_tree_ld = yes ; then
6199 gcc_cv_ld_compress_debug=0
6200 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
6201 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
6202 gcc_cv_ld_compress_debug=2
6203 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6204 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
6205 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
6206 gcc_cv_ld_compress_debug=3
6207 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6208 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
6209 && test $in_tree_ld_is_elf = yes; then
6210 gcc_cv_ld_compress_debug=1
6212 elif echo "$ld_ver" | grep GNU > /dev/null; then
6213 if test "$ld_vers_major" -lt 2 \
6214 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
6215 gcc_cv_ld_compress_debug=0
6216 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
6217 gcc_cv_ld_compress_debug=1
6219 gcc_cv_ld_compress_debug=3
6220 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6222 if test $ld_is_gold = yes; then
6223 gcc_cv_ld_compress_debug=2
6224 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6230 # Introduced in Solaris 11.2.
6231 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
6232 gcc_cv_ld_compress_debug=3
6233 gcc_cv_ld_compress_debug_option="-z compress-sections"
6235 gcc_cv_ld_compress_debug=0
6239 # Assume linkers other than GNU ld don't support compessed debug
6241 gcc_cv_ld_compress_debug=0
6246 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
6247 [Define to the level of your linker's compressed debug section support.])
6248 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
6249 [Define to the linker option to enable compressed debug sections.])
6250 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
6252 if test x"$ld64_flag" = x"yes"; then
6254 # Set defaults for possibly untestable items.
6255 gcc_cv_ld64_export_dynamic=0
6257 if test "$build" = "$host"; then
6263 # On Darwin, because of FAT library support, it is often possible to execute
6264 # exes from compatible archs even when the host differs from the build system.
6265 case "$build","$host" in
6266 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
6271 # If the configurer specified a minimum ld64 version to be supported, then use
6272 # that to determine feature support.
6273 if test x"${gcc_cv_ld64_version}" != x; then
6274 AC_MSG_CHECKING(ld64 specified version)
6275 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
6276 AC_MSG_RESULT($gcc_cv_ld64_major)
6277 if test "$gcc_cv_ld64_major" -ge 236; then
6278 gcc_cv_ld64_export_dynamic=1
6280 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
6281 # If the version was not specified, try to find it.
6282 AC_MSG_CHECKING(linker version)
6283 if test x"${gcc_cv_ld64_version}" = x; then
6284 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
6286 AC_MSG_RESULT($gcc_cv_ld64_version)
6288 AC_MSG_CHECKING(linker for -export_dynamic support)
6289 gcc_cv_ld64_export_dynamic=1
6290 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6291 gcc_cv_ld64_export_dynamic=0
6293 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
6296 if test x"${gcc_cv_ld64_version}" != x; then
6297 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
6298 [Define to ld64 version.])
6301 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
6302 [Define to 1 if ld64 supports '-export_dynamic'.])
6305 if test x"$dsymutil_flag" = x"yes"; then
6307 # If the user specified a dsymutil path, then we will already have the
6308 # version string, otherwise, pick it up.
6309 if test x"$gcc_cv_dsymutil" = x; then
6310 AC_MSG_WARN([dsymutil is a required tool for this system, but not found])
6311 dsymutil_vers="tool unspecified"
6312 elif test x"$dsymutil_vers" = x; then
6313 dsymutil_vers=`$gcc_cv_dsymutil -v /dev/null 2>&1`
6316 dsymutil_temp=`echo $dsymutil_vers | sed 1q`
6317 AC_MSG_CHECKING(dsymutil version "$dsymutil_temp")
6318 if echo $dsymutil_temp | grep dwarfutils- > /dev/null; then
6319 dsymutil_kind=DWARFUTILS
6320 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*dwarfutils-\([[0-9\.]]*\).*/\1/'`
6321 elif echo $dsymutil_temp | grep clang- > /dev/null; then
6323 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*clang-\([[0-9\.]]*\).*/\1/'`
6324 elif echo $dsymutil_temp | grep 'LLVM version ' > /dev/null; then
6326 dsymutil_vers=`echo $dsymutil_temp | sed 's/.*LLVM\ version\ \([[0-9\.]]*\).*/\1/'`
6328 dsymutil_kind=UNKNOWN
6331 dsymutil_major=`expr "$dsymutil_vers" : '\([[0-9]]*\)'`
6332 dsymutil_minor=`expr "$dsymutil_vers" : '[[0-9]]*\.\([[0-9]]*\)'`
6333 dsymutil_tiny=`expr "$dsymutil_vers" : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
6334 if test x"${dsymutil_minor}" = x; then
6337 if test x"${dsymutil_tiny}" = x; then
6340 AC_DEFINE_UNQUOTED(DSYMUTIL_VERSION, [$dsymutil_kind,${dsymutil_major},${dsymutil_minor},${dsymutil_tiny}],
6341 [Define to the dsymutil version.])
6342 AC_MSG_RESULT($dsymutil_vers : $dsymutil_kind ${dsymutil_major} ${dsymutil_minor} ${dsymutil_tiny} )
6346 win32 | pe | cygwin* | mingw32*)
6347 AC_MSG_CHECKING(broken PE linker dwarf5 support)
6348 gcc_cv_ld_broken_pe_dwarf5=yes
6349 if test $in_tree_ld = yes ; then
6350 if grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6351 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc \
6352 && grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6353 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc; then
6354 gcc_cv_ld_broken_pe_dwarf5=no
6357 if $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \
6358 && $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:'; then
6359 gcc_cv_ld_broken_pe_dwarf5=no
6362 if test x$gcc_cv_ld_broken_pe_dwarf5 = xyes; then
6363 AC_DEFINE(HAVE_LD_BROKEN_PE_DWARF5, 1,
6364 [Define if the PE linker has broken DWARF 5 support.])
6366 AC_MSG_RESULT($gcc_cv_ld_broken_pe_dwarf5)
6368 AC_MSG_CHECKING(PE linker --disable-dynamicbase support)
6369 gcc_cv_ld_disable_dynamicbase=no
6370 if test $in_tree_ld = yes; then
6371 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 36 -o "$gcc_cv_gld_major_version" -gt 2; then \
6372 gcc_cv_ld_disable_dynamicbase=yes
6375 if $gcc_cv_ld --help 2>&1 | grep -q 'disable\-]dynamicbase' > /dev/null; then
6376 gcc_cv_ld_disable_dynamicbase=yes
6379 if test x"$gcc_cv_ld_disable_dynamicbase" = xyes; then
6380 AC_DEFINE(HAVE_LD_PE_DISABLE_DYNAMICBASE, 1,
6381 [Define if the PE linker supports --disable-dynamicbase option.])
6383 AC_MSG_RESULT($gcc_cv_ld_disable_dynamicbase)
6391 AC_CACHE_CHECK(linker --as-needed support,
6392 gcc_cv_ld_as_needed,
6393 [gcc_cv_ld_as_needed=no
6394 gcc_cv_ld_as_needed_option='--as-needed'
6395 gcc_cv_ld_no_as_needed_option='--no-as-needed'
6396 if test $in_tree_ld = yes ; then
6397 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
6398 && test $in_tree_ld_is_elf = yes; then
6399 gcc_cv_ld_as_needed=yes
6400 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
6401 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6402 gcc_cv_ld_no_as_needed_option='--pop-state'
6405 elif test x$gcc_cv_ld != x; then
6406 # Check if linker supports --as-needed and --no-as-needed options
6407 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
6408 gcc_cv_ld_as_needed=yes
6409 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
6410 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
6411 && echo "$ld_ver" | grep GNU > /dev/null \
6412 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
6413 # Use these options only when both ld.bfd and ld.gold support
6414 # --push-state/--pop-state, which unfortunately wasn't added
6416 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6417 gcc_cv_ld_no_as_needed_option='--pop-state'
6420 case "$target:$gnu_ld" in
6422 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
6424 gcc_cv_ld_as_needed=yes
6425 gcc_cv_ld_as_needed_option="-z ignore"
6426 gcc_cv_ld_no_as_needed_option="-z record"
6430 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
6431 # dl_iterate_phdr, i.e. since Solaris 11.
6433 *-*-solaris2.1[[1-9]]*)
6435 i?86-*-* | x86_64-*-*)
6436 if echo "$ld_ver" | grep GNU > /dev/null; then
6437 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
6438 gcc_cv_ld_as_needed=no
6444 gcc_cv_ld_as_needed=no
6448 if test x"$gcc_cv_ld_as_needed" = xyes; then
6449 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
6450 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
6451 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
6452 [Define to the linker option to ignore unused dependencies.])
6453 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
6454 [Define to the linker option to keep unused dependencies.])
6457 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
6458 saved_LDFLAGS="$LDFLAGS"
6459 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
6460 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
6461 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6462 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
6464 LDFLAGS="$saved_LDFLAGS"
6465 if test "x$gcc_cv_ld_clearcap" = xyes; then
6466 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
6467 [Define if the linker supports clearing hardware capabilities via mapfile.])
6468 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
6470 AC_MSG_RESULT($gcc_cv_ld_clearcap)
6476 emul_name="-melf32lppc"
6479 emul_name="-melf32ppc"
6482 AC_CACHE_CHECK(linker .gnu.attributes long double support,
6484 [gcc_cv_ld_ppc_attr=no
6485 if test x"$ld_is_gold" = xyes; then
6486 gcc_cv_ld_ppc_attr=yes
6487 elif test $in_tree_ld = yes ; then
6488 if test "$gcc_cv_gld_major_version" -eq 2 \
6489 -a "$gcc_cv_gld_minor_version" -ge 28 \
6490 -o "$gcc_cv_gld_major_version" -gt 2; then
6491 gcc_cv_ld_ppc_attr=yes
6493 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6494 # check that merging the long double .gnu_attribute doesn't warn
6495 cat > conftest1.s <<EOF
6498 cat > conftest2.s <<EOF
6501 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6502 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6503 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
6504 && test ! -s conftest.err; then
6505 gcc_cv_ld_ppc_attr=yes
6507 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
6510 if test x$gcc_cv_ld_ppc_attr = xyes; then
6511 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
6512 [Define if your PowerPC linker has .gnu.attributes long double support.])
6517 case "$target:$tm_file" in
6518 powerpc64*-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
6521 emul_name="-melf64lppc"
6524 emul_name="-melf64ppc"
6527 emul_name="-melf64lppc_fbsd"
6530 emul_name="-melf64ppc_fbsd"
6533 AC_CACHE_CHECK(linker support for omitting dot symbols,
6534 gcc_cv_ld_no_dot_syms,
6535 [gcc_cv_ld_no_dot_syms=no
6536 if test x"$ld_is_gold" = xyes; then
6537 gcc_cv_ld_no_dot_syms=yes
6538 elif test $in_tree_ld = yes ; then
6539 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
6540 gcc_cv_ld_no_dot_syms=yes
6542 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6543 cat > conftest1.s <<EOF
6547 cat > conftest2.s <<EOF
6548 .section ".opd","aw"
6553 .quad .LEfoo,.TOC.@tocbase,0
6559 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6560 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6561 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
6562 gcc_cv_ld_no_dot_syms=yes
6564 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
6567 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
6568 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
6569 [Define if your PowerPC64 linker only needs function descriptor syms.])
6572 AC_CACHE_CHECK(linker large toc support,
6573 gcc_cv_ld_large_toc,
6574 [gcc_cv_ld_large_toc=no
6575 if test x"$ld_is_gold" = xyes; then
6576 gcc_cv_ld_large_toc=yes
6577 elif test $in_tree_ld = yes ; then
6578 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
6579 gcc_cv_ld_large_toc=yes
6581 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6582 cat > conftest.s <<EOF
6583 .section ".tbss","awT",@nobits
6589 addis 9,13,ie0@got@tprel@ha
6590 ld 9,ie0@got@tprel@l(9)
6592 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6593 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
6594 gcc_cv_ld_large_toc=yes
6596 rm -f conftest conftest.o conftest.s
6599 if test x"$gcc_cv_ld_large_toc" = xyes; then
6600 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6601 [Define if your PowerPC64 linker supports a large TOC.])
6604 AC_CACHE_CHECK(linker toc pointer alignment,
6605 gcc_cv_ld_toc_align,
6606 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
6607 cat > conftest.s <<EOF
6612 .section .data.rel.ro,"aw",@progbits
6617 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6618 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
6619 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
6621 rm -f conftest conftest.o conftest.s
6624 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
6625 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
6626 [Define to .TOC. alignment forced by your linker.])
6633 AC_CACHE_CHECK(linker large toc support,
6634 gcc_cv_ld_large_toc,
6635 [gcc_cv_ld_large_toc=no
6636 if test x$gcc_cv_as != x ; then
6637 cat > conftest.s <<EOF
6647 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
6648 gcc_cv_ld_large_toc=yes
6650 rm -f conftest conftest.o conftest.s
6653 if test x"$gcc_cv_ld_large_toc" = xyes; then
6654 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6655 [Define if your PowerPC64 linker supports a large TOC.])
6660 AC_CACHE_CHECK(linker --build-id support,
6662 [gcc_cv_ld_buildid=no
6663 if test $in_tree_ld = yes ; then
6664 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6665 "$gcc_cv_gld_minor_version" -ge 18 -o \
6666 "$gcc_cv_gld_major_version" -gt 2 \
6667 && test $in_tree_ld_is_elf = yes; then
6668 gcc_cv_ld_buildid=yes
6670 elif test x$gcc_cv_ld != x; then
6671 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
6672 gcc_cv_ld_buildid=yes
6675 if test x"$gcc_cv_ld_buildid" = xyes; then
6676 AC_DEFINE(HAVE_LD_BUILDID, 1,
6677 [Define if your linker supports --build-id.])
6680 AC_ARG_ENABLE(linker-build-id,
6681 [AS_HELP_STRING([--enable-linker-build-id],
6682 [compiler will always pass --build-id to linker])],
6684 enable_linker_build_id=no)
6686 if test x"$enable_linker_build_id" = xyes; then
6687 if test x"$gcc_cv_ld_buildid" = xyes; then
6688 AC_DEFINE(ENABLE_LD_BUILDID, 1,
6689 [Define if gcc should always pass --build-id to linker.])
6691 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
6695 # In binutils 2.21, GNU ld gained support for new emulations fully
6696 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
6697 AC_CACHE_CHECK(linker *_sol2 emulation support,
6698 gcc_cv_ld_sol2_emulation,
6699 [gcc_cv_ld_sol2_emulation=no
6700 if test $in_tree_ld = yes ; then
6701 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6702 "$gcc_cv_gld_minor_version" -ge 21 -o \
6703 "$gcc_cv_gld_major_version" -gt 2 \
6704 && test $in_tree_ld_is_elf = yes; then
6705 gcc_cv_ld_sol2_emulation=yes
6707 elif test x$gcc_cv_ld != x; then
6708 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
6709 grep _sol2 > /dev/null; then
6710 gcc_cv_ld_sol2_emulation=yes
6713 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
6714 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
6715 [Define if your linker supports the *_sol2 emulations.])
6718 AC_CACHE_CHECK(linker --sysroot support,
6720 [gcc_cv_ld_sysroot=no
6721 if test $in_tree_ld = yes ; then
6722 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
6723 gcc_cv_ld_sysroot=yes
6725 elif test x$gcc_cv_ld != x; then
6726 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
6727 gcc_cv_ld_sysroot=yes
6730 if test x"$gcc_cv_ld_sysroot" = xyes; then
6731 AC_DEFINE(HAVE_LD_SYSROOT, 1,
6732 [Define if your linker supports --sysroot.])
6737 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
6738 AC_CACHE_CHECK([system-provided CRTs on Solaris],
6739 gcc_cv_solaris_crts,
6740 [gcc_cv_solaris_crts=no
6741 if test x$host != x$target; then
6742 if test "x$with_sysroot" = xyes; then
6743 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
6745 target_sysroot="${with_sysroot}"
6748 target_libdir="$target_sysroot/usr/lib"
6749 # At the time they were added, gcrt1.o became a symlink for backwards
6750 # compatibility on x86, while crt1.o was added on sparc, so check for that.
6752 i?86-*-solaris2* | x86_64-*-solaris2*)
6753 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
6756 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
6761 if test x$gcc_cv_solaris_crts = xyes; then
6762 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
6763 [Define if the system-provided CRTs are present on Solaris.])
6766 AC_ARG_ENABLE(libssp,
6767 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
6768 [case "${enableval}" in
6772 AC_MSG_ERROR([unknown libssp setting $enableval])
6776 # Test for stack protector support in target C library.
6777 AC_CACHE_CHECK(__stack_chk_fail in target C library,
6778 gcc_cv_libc_provides_ssp,
6779 [gcc_cv_libc_provides_ssp=no
6780 if test "x$enable_libssp" = "xno"; then
6781 gcc_cv_libc_provides_ssp=yes
6782 elif test "x$enable_libssp" = "xyes"; then
6783 gcc_cv_libc_provides_ssp=no
6787 # All versions of musl provide stack protector
6788 gcc_cv_libc_provides_ssp=yes;;
6789 *-*-linux* | *-*-kfreebsd*-gnu)
6790 # glibc 2.4 and later provides __stack_chk_fail and
6791 # either __stack_chk_guard, or TLS access to stack guard canary.
6792 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
6793 [if test -f $target_header_dir/features.h \
6794 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
6795 $target_header_dir/features.h > /dev/null; then
6796 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
6797 $target_header_dir/features.h > /dev/null && \
6798 test -f $target_header_dir/bits/uClibc_config.h && \
6799 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
6800 $target_header_dir/bits/uClibc_config.h > /dev/null; then
6801 gcc_cv_libc_provides_ssp=yes
6803 # all versions of Bionic support stack protector
6804 elif test -f $target_header_dir/sys/cdefs.h \
6805 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
6806 $target_header_dir/sys/cdefs.h > /dev/null; then
6807 gcc_cv_libc_provides_ssp=yes
6811 # Avoid complicated tests (see
6812 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
6813 # simply assert that glibc does provide this, which is true for all
6814 # realistically usable GNU/Hurd configurations.
6815 # All supported versions of musl provide it as well
6816 gcc_cv_libc_provides_ssp=yes;;
6817 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
6818 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
6819 [echo "no __stack_chk_fail on this target"])
6821 *) gcc_cv_libc_provides_ssp=no ;;
6825 if test x$gcc_cv_libc_provides_ssp = xyes; then
6826 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
6827 [Define if your target C library provides stack protector support])
6830 # Check whether --enable-default-ssp was given.
6831 AC_ARG_ENABLE(default-ssp,
6832 [AS_HELP_STRING([--enable-default-ssp],
6833 [enable Stack Smashing Protection as default])],[
6834 if test x$gcc_cv_libc_provides_ssp = xyes; then
6836 ia64*-*-*) enable_default_ssp=no ;;
6837 *) enable_default_ssp=$enableval ;;
6840 enable_default_ssp=no
6842 enable_default_ssp=no)
6843 if test x$enable_default_ssp = xyes ; then
6844 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
6845 [Define if your target supports default stack protector and it is enabled.])
6847 AC_SUBST([enable_default_ssp])
6849 # Test for <sys/sdt.h> on the target.
6850 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
6851 AC_MSG_CHECKING(sys/sdt.h in the target C library)
6853 if test -f $target_header_dir/sys/sdt.h; then
6855 AC_DEFINE(HAVE_SYS_SDT_H, 1,
6856 [Define if your target C library provides sys/sdt.h])
6858 AC_MSG_RESULT($have_sys_sdt_h)
6860 # Check if TFmode long double should be used by default or not.
6861 # Some glibc targets used DFmode long double, but with glibc 2.4
6862 # and later they can use TFmode.
6864 powerpc*-*-linux* | \
6868 AC_ARG_WITH(long-double-128,
6869 [AS_HELP_STRING([--with-long-double-128],
6870 [use 128-bit long double by default])],
6871 gcc_cv_target_ldbl128="$with_long_double_128", [
6873 s390*-*-linux-musl*)
6874 gcc_cv_target_ldbl128=yes
6876 powerpc*-*-linux-musl*)
6877 gcc_cv_target_ldbl128=no
6880 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6881 [gcc_cv_target_ldbl128=no
6882 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6883 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6884 && gcc_cv_target_ldbl128=yes
6892 if test x$gcc_cv_target_ldbl128 = xyes; then
6893 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6894 [Define if TFmode long double should be the default])
6897 # Check if TFmode long double target should use the IBM extended double or IEEE
6898 # 128-bit floating point formats if long doubles are 128-bits long. The long
6899 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6900 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6902 AC_ARG_WITH([long-double-format],
6903 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6904 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6905 case "$target:$with_long_double_format" in
6906 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6909 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6910 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6912 power7 | power8 | power9 | power1*)
6916 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6917 supported if the default cpu is power7 or newer])
6918 with_long_double_format=""
6922 powerpc64*-*-linux*:*)
6923 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6924 with_long_double_format=""
6927 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6928 on 64-bit PowerPC VSX Linux systems])
6929 with_long_double_format=""
6934 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6935 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6936 gcc_cv_libc_provides_hwcap_in_tcb=no
6939 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6942 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6943 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6944 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6947 # Check if the target LIBC handles PT_GNU_STACK.
6948 gcc_cv_libc_gnustack=unknown
6951 GCC_GLIBC_VERSION_GTE_IFELSE([2], [31], [gcc_cv_libc_gnustack=yes], )
6954 if test x$gcc_cv_libc_gnustack = xyes; then
6955 AC_DEFINE(TARGET_LIBC_GNUSTACK, 1,
6956 [Define if your target C Library properly handles PT_GNU_STACK])
6959 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6960 gcc_cv_target_dl_iterate_phdr=unknown
6963 # <link.h> needs both a dl_iterate_phdr declaration and support for
6964 # compilation with largefile support.
6965 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6966 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6967 gcc_cv_target_dl_iterate_phdr=yes
6969 gcc_cv_target_dl_iterate_phdr=no
6972 *-*-dragonfly* | *-*-freebsd*)
6973 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6974 gcc_cv_target_dl_iterate_phdr=yes
6976 gcc_cv_target_dl_iterate_phdr=no
6980 gcc_cv_target_dl_iterate_phdr=yes
6983 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
6984 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
6985 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
6986 [Define if your target C library provides the `dl_iterate_phdr' function.])
6988 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
6990 # We no longer support different GC mechanisms. Emit an error if
6991 # the user configures with --with-gc.
6993 [AS_HELP_STRING([--with-gc={page,zone}],
6994 [this option is not supported anymore. It used to choose
6995 the garbage collection mechanism to use with the compiler])],
6996 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
6999 # Libraries to use on the host. This will normally be set by the top
7000 # level Makefile. Here we simply capture the value for our Makefile.
7001 if test -z "${HOST_LIBS+set}"; then
7006 # Use the system's zlib library.
7009 dnl Very limited version of automake's enable-maintainer-mode
7011 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
7012 dnl maintainer-mode is disabled by default
7013 AC_ARG_ENABLE(maintainer-mode,
7014 [AS_HELP_STRING([--enable-maintainer-mode],
7015 [enable make rules and dependencies not useful
7016 (and sometimes confusing) to the casual installer])],
7017 maintainer_mode=$enableval,
7020 AC_MSG_RESULT($maintainer_mode)
7022 if test "$maintainer_mode" = "yes"; then
7029 dnl Whether to prevent multiple front-ends from linking at the same time
7031 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
7032 AC_ARG_ENABLE(link-mutex,
7033 [AS_HELP_STRING([--enable-link-mutex],
7034 [avoid linking multiple front-ends at once to avoid thrashing
7035 on the build machine])],
7036 do_link_mutex=$enableval,
7038 AC_MSG_RESULT($do_link_mutex)
7040 if test "$do_link_mutex" = "yes"; then
7045 AC_SUBST(DO_LINK_MUTEX)
7047 dnl Whether to prevent multiple GCC front-ends from linking at the same time
7049 AC_MSG_CHECKING([whether to serialize linking of multiple front-ends])
7050 AC_ARG_ENABLE(link-serialization,
7051 [AS_HELP_STRING([--enable-link-serialization],
7052 [avoid linking multiple GCC front-ends at once using make
7053 dependencies to avoid thrashing on the build machine])],
7054 do_link_serialization=$enableval,
7055 do_link_serialization=no)
7056 AC_MSG_RESULT($do_link_serialization)
7058 case "$do_link_serialization" in
7060 DO_LINK_SERIALIZATION=1;;
7061 [[1-9]] | [[1-9]][[0-9]] | [[1-9]][[0-9]][[0-9]])
7062 DO_LINK_SERIALIZATION=$do_link_serialization;;
7064 DO_LINK_SERIALIZATION=;;
7066 AC_MSG_ERROR(bad value ${do_link_serialization} given for --enable-link-serialization) ;;
7068 AC_SUBST(DO_LINK_SERIALIZATION)
7074 # Make empty files to contain the specs and options for each language.
7075 # Then add #include lines to for a compiler that has specs and/or options.
7081 # These (without "all_") are set in each config-lang.in.
7082 # `language' must be a single word so is spelled singularly.
7085 all_outputs='Makefile'
7086 # List of language configure and makefile fragments.
7087 all_lang_configurefrags=
7089 # Additional files for gengtype
7090 all_gtfiles="$target_gtfiles"
7092 # These are the languages that are set in --enable-languages,
7093 # and are available in the GCC tree.
7094 all_selected_languages=
7096 # Add the language fragments.
7097 # Languages are added via two mechanisms. Some information must be
7098 # recorded in makefile variables, these are defined in config-lang.in.
7099 # We accumulate them and plug them into the main Makefile.
7100 # The other mechanism is a set of hooks for each of the main targets
7101 # like `clean', `install', etc.
7103 language_hooks="Make-hooks"
7105 for lang in ${srcdir}/*/config-lang.in
7108 test "$lang" = "${srcdir}/*/config-lang.in" && continue
7110 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
7111 if test "x$lang_alias" = x
7113 echo "$lang doesn't set \$language." 1>&2
7116 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
7117 subdirs="$subdirs $subdir"
7119 # $gcc_subdir is where the gcc integration files are to be found
7120 # for a language, both for internal compiler purposes (compiler
7121 # sources implementing front-end to GCC tree converters), and for
7122 # build infrastructure purposes (Make-lang.in, etc.)
7124 # This will be <subdir> (relative to $srcdir) if a line like
7125 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
7126 # is found in <langdir>/config-lang.in, and will remain <langdir>
7129 # Except for the language alias (fetched above), the regular
7130 # "config-lang.in" contents are always retrieved from $gcc_subdir,
7131 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
7132 # only this and the language alias.
7134 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
7135 if [ "$gcc_subdir" = "" ]; then
7136 gcc_subdir="$subdir"
7139 case ",$enable_languages," in
7141 all_selected_languages="$all_selected_languages $lang_alias"
7142 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
7143 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
7155 . ${srcdir}/$gcc_subdir/config-lang.in
7156 if test "x$language" = x
7158 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
7163 case ",$enable_languages," in
7166 for i in $subdir_requires; do
7167 test -f "${srcdir}/$i/config-lang.in" && continue
7175 all_lang_configurefrags="$all_lang_configurefrags \$(srcdir)/$gcc_subdir/config-lang.in"
7176 if test "x$language" = xc && test -n "$all_lang_makefrags"; then
7177 # Put c/Make-lang.in fragment first to match serialization languages order.
7178 all_lang_makefrags="\$(srcdir)/$gcc_subdir/Make-lang.in $all_lang_makefrags"
7180 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
7182 if test -f $srcdir/$gcc_subdir/lang.opt; then
7183 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
7184 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
7186 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
7187 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
7189 all_languages="$all_languages $language"
7190 all_compilers="$all_compilers $compilers"
7191 all_outputs="$all_outputs $outputs"
7192 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
7193 case ",$enable_languages," in
7195 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
7197 AC_SUBST(enable_lto)
7204 for language in $all_selected_languages
7206 check_languages="$check_languages check-$language"
7210 for language in $all_selected_languages
7212 selftest_languages="$selftest_languages selftest-$language"
7215 # We link each language in with a set of hooks, reached indirectly via
7216 # lang.${target}. Only do so for selected languages.
7220 target_list="all.cross start.encap rest.encap tags \
7221 install-common install-man install-info install-dvi install-pdf \
7222 install-html dvi pdf html uninstall info man srcextra srcman srcinfo \
7223 mostlyclean clean distclean maintainer-clean install-plugin"
7225 for t in $target_list
7228 for lang in $all_selected_languages
7232 echo "lang.$t: $x" >> Make-hooks
7235 echo "ifeq (\$(DO_LINK_SERIALIZATION),)" >> Make-hooks
7236 echo "SERIAL_LIST =" >> Make-hooks
7237 echo else >> Make-hooks
7241 serialization_languages=c
7242 for lang in $all_selected_languages
7244 test $lang = c && continue
7245 if test $lang = lto; then
7246 serialization_languages="$serialization_languages lto1 lto2"
7248 serialization_languages="$serialization_languages $lang"
7251 for lang in $serialization_languages
7253 test $lang = c && continue
7254 lang_cnt=`expr $lang_cnt + 1`
7255 lang_list=" $prev$lang_list"
7258 echo "SERIAL_LIST = \$(wordlist \$(DO_LINK_SERIALIZATION),$lang_cnt,$lang_list)" >> Make-hooks
7259 echo endif >> Make-hooks
7260 echo "SERIAL_COUNT = `expr $lang_cnt + 1`" >> Make-hooks
7261 echo "INDEX.c = 0" >> Make-hooks
7263 for lang in $serialization_languages
7265 test $lang = c && continue
7266 echo "$lang.prev = \$(if \$(word $lang_cnt,\$(SERIAL_LIST)),\$(\$(word $lang_cnt,\$(SERIAL_LIST)).serial))" >> Make-hooks
7267 echo "INDEX.$lang = $lang_idx" >> Make-hooks
7268 lang_cnt=`expr $lang_cnt - 1`
7269 lang_idx=`expr $lang_idx + 1`
7273 # Option include files
7276 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
7277 option_includes="option-includes.mk"
7278 AC_SUBST_FILE(option_includes)
7286 echo "dir ." > .gdbinit
7287 echo "dir ${srcdir}" >> .gdbinit
7288 if test x$gdb_needs_out_file_path = xyes
7290 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
7292 if test "x$subdirs" != x; then
7295 echo "dir ${srcdir}/$s" >> .gdbinit
7298 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
7299 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
7301 # Put a breakpoint on __asan_report_error to help with debugging buffer
7304 *-fsanitize=address*)
7305 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
7309 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
7310 AC_SUBST(gcc_tooldir)
7313 # Find a directory in which to install a shared libgcc.
7315 AC_ARG_ENABLE(version-specific-runtime-libs,
7316 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
7317 [specify that runtime libraries should be
7318 installed in a compiler-specific directory])])
7320 # Substitute configuration variables
7323 AC_SUBST(all_compilers)
7324 AC_SUBST(all_gtfiles)
7325 AC_SUBST(all_lang_configurefrags)
7326 AC_SUBST(all_lang_makefrags)
7327 AC_SUBST(all_languages)
7328 AC_SUBST(all_selected_languages)
7329 AC_SUBST(build_exeext)
7330 AC_SUBST(build_install_headers_dir)
7331 AC_SUBST(build_xm_file_list)
7332 AC_SUBST(build_xm_include_list)
7333 AC_SUBST(build_xm_defines)
7334 AC_SUBST(build_file_translate)
7335 AC_SUBST(check_languages)
7336 AC_SUBST(selftest_languages)
7337 AC_SUBST(cpp_install_dir)
7338 AC_SUBST(xmake_file)
7339 AC_SUBST(tmake_file)
7340 AC_SUBST(TM_ENDIAN_CONFIG)
7341 AC_SUBST(TM_MULTILIB_CONFIG)
7342 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
7343 AC_SUBST(extra_gcc_objs)
7344 AC_SUBST(user_headers_inc_next_pre)
7345 AC_SUBST(user_headers_inc_next_post)
7346 AC_SUBST(extra_headers_list)
7347 AC_SUBST(extra_objs)
7348 AC_SUBST(extra_programs)
7349 AC_SUBST(float_h_file)
7350 AC_SUBST(gcc_config_arguments)
7351 AC_SUBST(gcc_gxx_include_dir)
7352 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
7353 AC_SUBST(gcc_gxx_libcxx_include_dir)
7354 AC_SUBST(gcc_gxx_libcxx_include_dir_add_sysroot)
7355 AC_SUBST(host_exeext)
7356 AC_SUBST(host_xm_file_list)
7357 AC_SUBST(host_xm_include_list)
7358 AC_SUBST(host_xm_defines)
7359 AC_SUBST(out_host_hook_obj)
7361 AC_SUBST(lang_opt_files)
7362 AC_SUBST(lang_specs_files)
7363 AC_SUBST(lang_tree_files)
7364 AC_SUBST(local_prefix)
7366 AC_SUBST(objc_boehm_gc)
7368 AC_SUBST(out_object_file)
7369 AC_SUBST(common_out_file)
7370 AC_SUBST(common_out_object_file)
7371 AC_SUBST(tm_file_list)
7372 AC_SUBST(tm_include_list)
7373 AC_SUBST(tm_defines)
7374 AC_SUBST(tm_p_file_list)
7375 AC_SUBST(tm_p_include_list)
7376 AC_SUBST(tm_d_file_list)
7377 AC_SUBST(tm_d_include_list)
7378 AC_SUBST(xm_file_list)
7379 AC_SUBST(xm_include_list)
7380 AC_SUBST(xm_defines)
7381 AC_SUBST(use_gcc_stdint)
7382 AC_SUBST(c_target_objs)
7383 AC_SUBST(cxx_target_objs)
7384 AC_SUBST(fortran_target_objs)
7385 AC_SUBST(d_target_objs)
7386 AC_SUBST(target_cpu_default)
7388 AC_SUBST_FILE(language_hooks)
7391 if test x${build} = x${host} ; then
7392 if test x${host} = x${target} ; then
7393 echo "Links are now set up to build a native compiler for ${target}." 1>&2
7395 echo "Links are now set up to build a cross-compiler" 1>&2
7396 echo " from ${host} to ${target}." 1>&2
7399 if test x${host} = x${target} ; then
7400 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
7401 echo " for ${target}." 1>&2
7403 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
7404 echo " from ${host} to ${target}." 1>&2
7408 AC_ARG_VAR(GMPLIBS,[How to link GMP])
7409 AC_ARG_VAR(GMPINC,[How to find GMP include files])
7411 AC_ARG_VAR(ISLLIBS,[How to link isl])
7412 AC_ARG_VAR(ISLINC,[How to find isl include files])
7413 if test "x${ISLLIBS}" != "x" ; then
7414 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
7418 AC_SUBST(pluginlibs)
7419 AC_SUBST(enable_plugin)
7420 if test x"$enable_plugin" = x"yes"; then
7421 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
7425 # Enable --enable-host-shared
7426 AC_ARG_ENABLE(host-shared,
7427 [AS_HELP_STRING([--enable-host-shared],
7428 [build host code as shared libraries])],
7429 [PICFLAG=-fPIC], [PICFLAG=])
7430 AC_SUBST(enable_host_shared)
7434 AC_ARG_ENABLE(libquadmath-support,
7435 [AS_HELP_STRING([--disable-libquadmath-support],
7436 [disable libquadmath support for Fortran])],
7437 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
7438 ENABLE_LIBQUADMATH_SUPPORT=yes)
7439 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
7440 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
7441 [Define to 1 to enable libquadmath support])
7445 # Specify what hash style to use by default.
7446 AC_ARG_WITH([linker-hash-style],
7447 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
7448 [specify the linker hash style])],
7449 [case x"$withval" in
7451 LINKER_HASH_STYLE=sysv
7454 LINKER_HASH_STYLE=gnu
7457 LINKER_HASH_STYLE=both
7460 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
7463 [LINKER_HASH_STYLE=''])
7464 if test x"${LINKER_HASH_STYLE}" != x; then
7465 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
7466 [The linker hash style])
7469 # Specify what should be the default of -fdiagnostics-color option.
7470 AC_ARG_WITH([diagnostics-color],
7471 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
7472 [specify the default of -fdiagnostics-color option
7473 auto-if-env stands for -fdiagnostics-color=auto if
7474 GCC_COLOR environment variable is present and
7475 -fdiagnostics-color=never otherwise])],
7476 [case x"$withval" in
7478 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
7481 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
7484 DIAGNOSTICS_COLOR_DEFAULT=-1
7487 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
7490 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
7493 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
7494 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
7495 [The default for -fdiagnostics-color option])
7497 # Specify what should be the default of -fdiagnostics-urls option.
7498 AC_ARG_WITH([diagnostics-urls],
7499 [AC_HELP_STRING([--with-diagnostics-urls={never,auto,auto-if-env,always}],
7500 [specify the default of -fdiagnostics-urls option
7501 auto-if-env stands for -fdiagnostics-urls=auto if
7502 GCC_URLS or TERM_URLS environment variable is present and
7503 -fdiagnostics-urls=never otherwise])],
7504 [case x"$withval" in
7506 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_NO
7509 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO
7512 DIAGNOSTICS_URLS_DEFAULT=-1
7515 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_YES
7518 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-urls])
7521 [DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO])
7522 AC_DEFINE_UNQUOTED(DIAGNOSTICS_URLS_DEFAULT, $DIAGNOSTICS_URLS_DEFAULT,
7523 [The default for -fdiagnostics-urls option])
7525 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
7526 # of jit/jit-playback.c.
7527 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
7528 echo "gcc_driver_version: ${gcc_driver_version}"
7529 cat > gcc-driver-name.h <<EOF
7530 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
7533 # Check whether --enable-default-pie was given.
7534 AC_ARG_ENABLE(default-pie,
7535 [AS_HELP_STRING([--enable-default-pie],
7536 [enable Position Independent Executable as default])],
7537 enable_default_pie=$enableval,
7538 enable_default_pie=no)
7539 if test x$enable_default_pie = xyes ; then
7540 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
7541 [Define if your target supports default PIE and it is enabled.])
7543 AC_SUBST([enable_default_pie])
7545 # Check if -fno-PIE works.
7546 AC_CACHE_CHECK([for -fno-PIE option],
7548 [saved_CXXFLAGS="$CXXFLAGS"
7549 CXXFLAGS="$CXXFLAGS -fno-PIE"
7550 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7551 [gcc_cv_c_no_fpie=yes],
7552 [gcc_cv_c_no_fpie=no])
7553 CXXFLAGS="$saved_CXXFLAGS"])
7554 if test "$gcc_cv_c_no_fpie" = "yes"; then
7555 NO_PIE_CFLAGS="-fno-PIE"
7557 AC_SUBST([NO_PIE_CFLAGS])
7559 # Check if -no-pie works.
7560 AC_CACHE_CHECK([for -no-pie option],
7562 [saved_LDFLAGS="$LDFLAGS"
7563 LDFLAGS="$LDFLAGS -no-pie"
7564 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7565 [gcc_cv_no_pie=yes],
7567 LDFLAGS="$saved_LDFLAGS"])
7568 if test "$gcc_cv_no_pie" = "yes"; then
7569 NO_PIE_FLAG="-no-pie"
7571 AC_SUBST([NO_PIE_FLAG])
7573 # Enable Intel CET on Intel CET enabled host if jit is enabled.
7574 GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
7575 case x$enable_languages in
7582 AC_SUBST(CET_HOST_FLAGS)
7584 # Check linker supports '-z bndplt'
7585 ld_bndplt_support=no
7586 AC_MSG_CHECKING(linker -z bndplt option)
7587 if test x"$ld_is_gold" = xno; then
7588 if test $in_tree_ld = yes ; then
7589 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7590 ld_bndplt_support=yes
7592 elif test x$gcc_cv_ld != x; then
7593 # Check if linker supports -a bndplt option
7594 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
7595 ld_bndplt_support=yes
7599 if test x"$ld_bndplt_support" = xyes; then
7600 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
7601 [Define if your linker supports -z bndplt])
7603 AC_MSG_RESULT($ld_bndplt_support)
7605 # Check linker supports '--push-state'/'--pop-state'
7606 ld_pushpopstate_support=no
7607 AC_MSG_CHECKING(linker --push-state/--pop-state options)
7608 if test x"$ld_is_gold" = xno; then
7609 if test $in_tree_ld = yes ; then
7610 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7611 ld_pushpopstate_support=yes
7613 elif test x$gcc_cv_ld != x; then
7614 # Check if linker supports --push-state/--pop-state options
7615 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
7616 ld_pushpopstate_support=yes
7620 if test x"$ld_pushpopstate_support" = xyes; then
7621 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
7622 [Define if your linker supports --push-state/--pop-state])
7624 AC_MSG_RESULT($ld_pushpopstate_support)
7626 # On s390, float_t has historically been statically defined as double for no
7627 # good reason. To comply with the C standard in the light of this definition,
7628 # gcc has evaluated float expressions in double precision when in
7629 # standards-compatible mode or when given -fexcess-precision=standard. To enable
7630 # a smooth transition towards the new model used by most architectures, where
7631 # gcc describes its behavior via the macro __FLT_EVAL_METHOD__ and glibc derives
7632 # float_t from that, this behavior can be configured with
7633 # --enable-s390-excess-float-precision. When given as enabled, that flag selects
7634 # the old model. When omitted, native builds and cross compiles that have target
7635 # libc headers will detect whether libc clamps float_t to double and in that
7636 # case maintain the old model. Otherwise, they will default to the new model.
7637 AC_ARG_ENABLE(s390-excess-float-precision,
7638 [AS_HELP_STRING([--enable-s390-excess-float-precision],
7639 [on s390 targets, evaluate float with double precision
7640 when in standards-conforming mode])],
7641 [],[enable_s390_excess_float_precision=auto])
7645 if test x"$enable_s390_excess_float_precision" = xauto; then
7646 # Can we autodetect the behavior of the target libc?
7647 if test "$target" = "$host" -a "$host" = "$build"; then
7648 enable_s390_excess_float_precision=autodetect
7649 elif test "x$with_headers" != xno; then
7650 # cross build. are target headers available?
7651 # carefully coerce the build-system compiler to use target headers
7652 saved_CXXFLAGS="$CXXFLAGS"
7653 fixed_XGCC_FLAGS_FOR_TARGET=`echo "$XGCC_FLAGS_FOR_TARGET" | sed 's/-B/-idirafter/g'`
7654 CROSS_TEST_CXXFLAGS="-nostdinc $fixed_XGCC_FLAGS_FOR_TARGET"
7655 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7656 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7658 ]])], [enable_s390_excess_float_precision=autodetect], [])
7659 CXXFLAGS="$saved_CXXFLAGS"
7662 if test x"$enable_s390_excess_float_precision" = xautodetect; then
7663 saved_CXXFLAGS="$CXXFLAGS"
7664 if ! test "$target" = "$host" -a "$host" = "$build"; then
7665 CXXFLAGS="$CROSS_TEST_CXXFLAGS"
7666 unset CROSS_TEST_CXXFLAGS
7668 AC_CACHE_CHECK([for glibc clamping float_t to double],
7669 gcc_cv_float_t_clamped_to_double, [
7670 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
7671 #define __FLT_EVAL_METHOD__ 0
7673 int dummy[sizeof(float_t) == sizeof(double) ? 1 : -1];
7675 [gcc_cv_float_t_clamped_to_double=yes],
7676 [gcc_cv_float_t_clamped_to_double=no])])
7677 CXXFLAGS="$saved_CXXFLAGS"
7678 enable_s390_excess_float_precision="$gcc_cv_float_t_clamped_to_double"
7680 # no way to detect behavior of target libc, default to new model
7681 enable_s390_excess_float_precision=no
7685 GCC_TARGET_TEMPLATE(ENABLE_S390_EXCESS_FLOAT_PRECISION)
7686 if test x"$enable_s390_excess_float_precision" = xyes; then
7687 AC_DEFINE(ENABLE_S390_EXCESS_FLOAT_PRECISION, 1,
7688 [Define to enable evaluating float expressions with double precision in
7689 standards-compatible mode on s390 targets.])
7694 # Configure the subdirectories
7695 # AC_CONFIG_SUBDIRS($subdirs)
7697 # Create the Makefile
7698 # and configure language subdirectories
7699 AC_CONFIG_FILES($all_outputs)
7701 AC_CONFIG_COMMANDS([default],
7703 case ${CONFIG_HEADERS} in
7704 *auto-host.h:config.in*)
7707 # Make sure all the subdirs exist.
7708 for d in $subdirs doc build common c-family
7710 test -d $d || mkdir $d
7713 [subdirs='$subdirs'])