2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2019 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 AC_ARG_WITH(cpp_install_dir,
232 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
233 [install the user visible C preprocessor in DIR
234 (relative to PREFIX) as well as PREFIX/bin])],
235 [if test x$withval = xyes; then
236 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
237 elif test x$withval != xno; then
238 cpp_install_dir=$withval
241 # We would like to our source tree to be readonly. However when releases or
242 # pre-releases are generated, the flex/bison generated files as well as the
243 # various formats of manuals need to be included along with the rest of the
244 # sources. Therefore we have --enable-generated-files-in-srcdir to do
247 AC_MSG_CHECKING([whether to place generated files in the source directory])
248 dnl generated-files-in-srcdir is disabled by default
249 AC_ARG_ENABLE(generated-files-in-srcdir,
250 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
251 [put copies of generated files in source dir
252 intended for creating source tarballs for users
253 without texinfo bison or flex])],
254 generated_files_in_srcdir=$enableval,
255 generated_files_in_srcdir=no)
257 AC_MSG_RESULT($generated_files_in_srcdir)
259 if test "$generated_files_in_srcdir" = "yes"; then
266 # -------------------
267 # Find default linker
268 # -------------------
272 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
273 gnu_ld_flag="$with_gnu_ld",
277 *darwin*) ld64_flag=yes;; # Darwin can only use a ld64-compatible linker.
281 # With pre-defined ld
283 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
284 DEFAULT_LINKER="$with_ld")
285 if test x"${DEFAULT_LINKER+set}" = x"set"; then
286 if test ! -x "$DEFAULT_LINKER"; then
287 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
288 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
290 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep ld64- > /dev/null; then
293 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
294 [Define to enable the use of a default linker.])
297 AC_MSG_CHECKING([whether a default linker was specified])
298 if test x"${DEFAULT_LINKER+set}" = x"set"; then
299 if test x"$gnu_ld_flag" = x"no"; then
300 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
302 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
308 # With demangler in GNU ld
309 AC_ARG_WITH(demangler-in-ld,
310 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
311 demangler_in_ld="$with_demangler_in_ld",
314 # ----------------------
315 # Find default assembler
316 # ----------------------
320 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
321 gas_flag="$with_gnu_as",
325 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
326 DEFAULT_ASSEMBLER="$with_as")
327 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
328 if test ! -x "$DEFAULT_ASSEMBLER"; then
329 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
330 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
333 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
334 [Define to enable the use of a default assembler.])
337 AC_MSG_CHECKING([whether a default assembler was specified])
338 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
339 if test x"$gas_flag" = x"no"; then
340 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
342 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
352 # If a non-executable a.out is present (e.g. created by GNU as above even if
353 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
354 # file, even when creating an executable, so an execution test fails.
355 # Remove possible default executable files to avoid this.
357 # FIXME: This really belongs into AC_PROG_CC and can be removed once
358 # Autoconf includes it.
359 rm -f a.out a.exe b.out
361 # Find the native compiler
364 ACX_PROG_GNAT([-I"$srcdir"/ada/libgnat])
366 # Do configure tests with the C++ compiler, since that's what we build with.
369 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
370 # optimizations to be activated explicitly by the toplevel.
373 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
374 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
379 # Determine PICFLAG for target gnatlib.
380 GCC_PICFLAG_FOR_TARGET
381 AC_SUBST(PICFLAG_FOR_TARGET)
383 # -------------------------
384 # Check C compiler features
385 # -------------------------
387 AC_USE_SYSTEM_EXTENSIONS
393 # sizeof(char) is 1 by definition.
394 AC_CHECK_SIZEOF(void *)
395 AC_CHECK_SIZEOF(short)
397 AC_CHECK_SIZEOF(long)
398 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
400 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
401 AC_MSG_ERROR([uint64_t or int64_t not found])
404 # check what underlying integer type int64_t uses
405 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
406 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
410 template <typename T> struct X { };
412 struct X<long> { typedef long t; };
413 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
414 if test "$ac_cv_int64_t_type" = "long"; then
415 AC_DEFINE(INT64_T_IS_LONG, 1,
416 [Define if int64_t uses long as underlying type.])
418 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
422 template <typename T> struct X { };
424 struct X<long long> { typedef long long t; };
425 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
428 AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [
429 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
431 ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])])
432 if test $ac_cv_std_swap_in_utility = yes; then
433 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1,
434 [Define if <utility> defines std::swap.])
437 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
438 # If the host compiler is affected by the bug, and we build with optimization
439 # enabled (which happens e.g. when cross-compiling), the pool allocator may
440 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
441 # Since there is no reliable feature check for the presence of this bug,
442 # we simply use a GCC version number check. (This should never trigger for
443 # stages 2 or 3 of a native bootstrap.)
445 if test "$GCC" = yes; then
446 saved_CXXFLAGS="$CXXFLAGS"
448 # The following test compilation will succeed if and only if $CXX accepts
449 # -fno-strict-aliasing *and* is older than GCC 4.3.
450 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
451 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
452 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
453 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
454 #error compiler not affected by placement new aliasing bug
457 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
458 [AC_MSG_RESULT([no])])
460 CXXFLAGS="$saved_CXXFLAGS"
462 AC_SUBST(aliasing_flags)
466 # ---------------------
467 # Warnings and checking
468 # ---------------------
470 # Check $CC warning features (if it's GCC).
471 # We want to use -pedantic, but we don't want warnings about
475 # * C++11 narrowing conversions in { }
476 # So, we only use -pedantic if we can disable those warnings.
478 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
479 AC_ARG_ENABLE(build-format-warnings,
480 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
481 [],[enable_build_format_warnings=yes])
482 AS_IF([test $enable_build_format_warnings = no],
483 [wf_opt=-Wno-format],[wf_opt=])
484 ACX_PROG_CXX_WARNING_OPTS(
485 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ],
486 [-Wcast-qual -Wno-error=format-diag $wf_opt])),
488 ACX_PROG_CC_WARNING_OPTS(
489 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes ],
490 [-Wno-error=format-diag])), [c_loose_warn])
491 ACX_PROG_CXX_WARNING_OPTS(
492 m4_quote(m4_do([-Wmissing-format-attribute ],
493 [-Woverloaded-virtual])), [strict_warn])
494 ACX_PROG_CC_WARNING_OPTS(
495 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
496 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
497 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
498 [-Wno-overlength-strings])), [strict_warn])
499 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
501 # The above macros do nothing if the compiler is not GCC. However, the
502 # Makefile has more goo to add other flags, so these variables are used
503 # to enable warnings only for GCC.
506 if test "x$GCC" = "xyes"; then
507 warn_cflags='$(GCC_WARN_CFLAGS)'
508 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
510 AC_SUBST(warn_cflags)
511 AC_SUBST(warn_cxxflags)
513 # Disable exceptions and RTTI if building with g++
514 ACX_PROG_CC_WARNING_OPTS(
515 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
518 # Enable expensive internal checks
520 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
524 AC_ARG_ENABLE(checking,
525 [AS_HELP_STRING([[--enable-checking[=LIST]]],
526 [enable expensive run-time checks. With LIST,
527 enable only specific categories of checks.
528 Categories are: yes,no,all,none,release.
529 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc,
530 rtlflag,rtl,runtime,tree,valgrind,types])],
531 [ac_checking_flags="${enableval}"],[
532 # Determine the default checks.
533 if test x$is_release = x ; then
534 ac_checking_flags=yes,extra
536 ac_checking_flags=release
538 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
539 for check in release $ac_checking_flags
542 # these set all the flags to specific states
543 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
544 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ;
545 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
546 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
547 ac_tree_checking=1 ; ac_valgrind_checking= ;
548 ac_types_checking=1 ;;
549 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
550 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
551 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
552 ac_rtlflag_checking= ; ac_runtime_checking= ;
553 ac_tree_checking= ; ac_valgrind_checking= ;
554 ac_types_checking= ;;
555 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
556 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ;
557 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
558 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
559 ac_tree_checking=1 ; ac_valgrind_checking= ;
560 ac_types_checking=1 ;;
561 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
562 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
563 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
564 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
565 ac_tree_checking= ; ac_valgrind_checking= ;
566 ac_types_checking= ;;
567 # these enable particular checks
568 assert) ac_assert_checking=1 ;;
569 df) ac_df_checking=1 ;;
570 extra) ac_extra_checking=1 ;;
571 fold) ac_fold_checking=1 ;;
572 gc) ac_gc_checking=1 ;;
573 gcac) ac_gc_always_collect=1 ;;
574 gimple) ac_gimple_checking=1 ;;
575 misc) ac_checking=1 ;;
576 rtl) ac_rtl_checking=1 ;;
577 rtlflag) ac_rtlflag_checking=1 ;;
578 runtime) ac_runtime_checking=1 ;;
579 tree) ac_tree_checking=1 ;;
580 types) ac_types_checking=1 ;;
581 valgrind) ac_valgrind_checking=1 ;;
582 *) AC_MSG_ERROR(unknown check category $check) ;;
588 if test x$ac_checking != x ; then
589 AC_DEFINE(CHECKING_P, 1,
590 [Define to 0/1 if you want more run-time sanity checks. This one gets a grab
591 bag of miscellaneous but relatively cheap checks.])
592 nocommon_flag=-fno-common
594 AC_DEFINE(CHECKING_P, 0)
596 AC_SUBST(nocommon_flag)
597 if test x$ac_extra_checking != x ; then
598 AC_DEFINE(ENABLE_EXTRA_CHECKING, 1,
599 [Define to 0/1 if you want extra run-time checking that might affect code
602 AC_DEFINE(ENABLE_EXTRA_CHECKING, 0)
604 if test x$ac_df_checking != x ; then
605 AC_DEFINE(ENABLE_DF_CHECKING, 1,
606 [Define if you want more run-time sanity checks for dataflow.])
608 if test x$ac_assert_checking != x ; then
609 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
610 [Define if you want assertions enabled. This is a cheap check.])
612 if test x$ac_gimple_checking != x ; then
613 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
614 [Define if you want operations on GIMPLE (the basic data structure of
615 the high-level optimizers) to be checked for dynamic type safety at
616 runtime. This is moderately expensive.])
618 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
619 if test x$ac_runtime_checking != x ; then
620 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
621 [Define if you want runtime assertions enabled. This is a cheap check.])
623 if test x$ac_tree_checking != x ; then
624 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
625 [Define if you want all operations on trees (the basic data
626 structure of the front ends) to be checked for dynamic type safety
627 at runtime. This is moderately expensive.
631 if test x$ac_types_checking != x ; then
632 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
633 [Define if you want all gimple types to be verified after gimplifiation.
637 AC_SUBST(TREECHECKING)
638 if test x$ac_rtl_checking != x ; then
639 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
640 [Define if you want all operations on RTL (the basic data structure
641 of the optimizer and back end) to be checked for dynamic type safety
642 at runtime. This is quite expensive.])
644 if test x$ac_rtlflag_checking != x ; then
645 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
646 [Define if you want RTL flag accesses to be checked against the RTL
647 codes that are supported for each access macro. This is relatively
650 if test x$ac_gc_checking != x ; then
651 AC_DEFINE(ENABLE_GC_CHECKING, 1,
652 [Define if you want the garbage collector to do object poisoning and
653 other memory allocation checks. This is quite expensive.])
655 if test x$ac_gc_always_collect != x ; then
656 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
657 [Define if you want the garbage collector to operate in maximally
658 paranoid mode, validating the entire heap and collecting garbage at
659 every opportunity. This is extremely expensive.])
661 if test x$ac_fold_checking != x ; then
662 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
663 [Define if you want fold checked that it never destructs its argument.
664 This is quite expensive.])
666 valgrind_path_defines=
669 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
670 dnl # an if statement. This was the source of very frustrating bugs
671 dnl # in converting to autoconf 2.5x!
672 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
674 # It is certainly possible that there's valgrind but no valgrind.h.
675 # GCC relies on making annotations so we must have both.
676 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
677 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
678 [[#include <valgrind/memcheck.h>
679 #ifndef VALGRIND_DISCARD
680 #error VALGRIND_DISCARD not defined
682 [gcc_cv_header_valgrind_memcheck_h=yes],
683 [gcc_cv_header_valgrind_memcheck_h=no])
684 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
685 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
686 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
687 [[#include <memcheck.h>
688 #ifndef VALGRIND_DISCARD
689 #error VALGRIND_DISCARD not defined
691 [gcc_cv_header_memcheck_h=yes],
692 [gcc_cv_header_memcheck_h=no])
693 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
694 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
695 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
696 [Define if valgrind's valgrind/memcheck.h header is installed.])
698 if test $gcc_cv_header_memcheck_h = yes; then
699 AC_DEFINE(HAVE_MEMCHECK_H, 1,
700 [Define if valgrind's memcheck.h header is installed.])
703 if test x$ac_valgrind_checking != x ; then
704 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
705 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
706 if test "x$valgrind_path" = "x" \
707 || (test $have_valgrind_h = no \
708 && test $gcc_cv_header_memcheck_h = no \
709 && test $gcc_cv_header_valgrind_memcheck_h = no); then
710 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
712 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
713 valgrind_command="$valgrind_path -q"
714 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
715 [Define if you want to run subprograms and generated programs
716 through valgrind (a memory checker). This is extremely expensive.])
718 AC_SUBST(valgrind_path_defines)
719 AC_SUBST(valgrind_command)
721 # Enable code coverage collection
722 AC_ARG_ENABLE(coverage,
723 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
724 [enable compiler's code coverage collection.
725 Use to measure compiler performance and locate
726 unused parts of the compiler. With LEVEL, specify
727 optimization. Values are opt, noopt,
729 [case "${enableval}" in
731 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0 -fkeep-static-functions"
734 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2 -fkeep-static-functions"
737 # a.k.a. --disable-coverage
741 AC_MSG_ERROR(unknown coverage setting $enableval)
745 AC_SUBST(coverage_flags)
747 AC_ARG_ENABLE(gather-detailed-mem-stats,
748 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
749 [enable detailed memory allocation stats gathering])], [],
750 [enable_gather_detailed_mem_stats=no])
751 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
752 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
753 [Define to enable detailed memory allocation stats gathering.])
755 AC_ARG_ENABLE(valgrind-annotations,
756 [AS_HELP_STRING([--enable-valgrind-annotations],
757 [enable valgrind runtime interaction])], [],
758 [enable_valgrind_annotations=no])
759 if test x$enable_valgrind_annotations != xno \
760 || test x$ac_valgrind_checking != x; then
761 if (test $have_valgrind_h = no \
762 && test $gcc_cv_header_memcheck_h = no \
763 && test $gcc_cv_header_valgrind_memcheck_h = no); then
764 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
766 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
767 [Define to get calls to the valgrind runtime enabled.])
770 # -------------------------------
771 # Miscenalleous configure options
772 # -------------------------------
776 [AS_HELP_STRING([--with-stabs],
777 [arrange to use stabs instead of host debug format])],
781 # Determine whether or not multilibs are enabled.
782 AC_ARG_ENABLE(multilib,
783 [AS_HELP_STRING([--enable-multilib],
784 [enable library support for multiple ABIs])],
785 [], [enable_multilib=yes])
786 AC_SUBST(enable_multilib)
788 # Determine whether or not multiarch is enabled.
789 AC_ARG_ENABLE(multiarch,
790 [AS_HELP_STRING([--enable-multiarch],
791 [enable support for multiarch paths])],
792 [case "${enableval}" in
793 yes|no|auto) enable_multiarch=$enableval;;
794 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
795 esac], [enable_multiarch=auto])
796 if test x${enable_multiarch} = xauto; then
797 if test x${with_native_system_header_dir} != x; then
798 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
801 if test x$host != x$target && test "x$with_sysroot" = x; then
802 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
806 AC_MSG_CHECKING(for multiarch configuration)
807 AC_SUBST(enable_multiarch)
808 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
810 # needed for setting the multiarch name for soft-float/hard-float ABIs
814 # default stack clash protection guard size as power of twos in bytes.
815 # Please keep these in sync with params.def.
819 # Keep the default value when the option is not used to 0, this allows us to
820 # distinguish between the cases where the user specifially set a value via
821 # configure and when the normal default value is used.
822 AC_ARG_WITH(stack-clash-protection-guard-size,
823 [AS_HELP_STRING([--with-stack-clash-protection-guard-size=size],
824 [Set the default stack clash protection guard size for specific targets as a power of two in bytes.])],
825 [DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size"], [DEFAULT_STK_CLASH_GUARD_SIZE=0])
826 if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \
827 && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \
828 || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then
829 AC_MSG_ERROR(m4_normalize([
830 Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. \
831 Must be between $stk_clash_min and $stk_clash_max.]))
834 AC_DEFINE_UNQUOTED(DEFAULT_STK_CLASH_GUARD_SIZE, $DEFAULT_STK_CLASH_GUARD_SIZE,
835 [Define to larger than zero set the default stack clash protector size.])
837 # Enable __cxa_atexit for C++.
838 AC_ARG_ENABLE(__cxa_atexit,
839 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
842 # Enable C extension for decimal float if target supports it.
843 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
845 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
846 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
847 [Define to 1 to enable decimal float extension to C.])
849 # Use default_decimal_float for dependency.
850 enable_decimal_float=$default_decimal_float
852 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
853 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
854 [Define to 1 to specify that we are using the BID decimal floating
855 point format instead of DPD])
857 # Enable C extension for fixed-point arithmetic.
858 AC_ARG_ENABLE(fixed-point,
859 [AS_HELP_STRING([--enable-fixed-point],
860 [enable fixed-point arithmetic extension to C])],
865 enable_fixed_point=yes
869 enable_fixed_point=yes
872 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
873 enable_fixed_point=no
877 AC_SUBST(enable_fixed_point)
879 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
880 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
881 [Define to 1 to enable fixed-point arithmetic extension to C.])
884 # Pass with no value to take the default
885 # Pass with a value to specify a thread package
886 AC_ARG_ENABLE(threads,
887 [AS_HELP_STRING([[--enable-threads[=LIB]]],
888 [enable thread usage for target GCC,
889 using LIB thread package])],,
893 [AS_HELP_STRING([--enable-tls],
894 [enable or disable generation of tls code
895 overriding the assembler check for tls support])],
899 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
900 Valid choices are 'yes' and 'no'.]) ;;
904 AC_ARG_ENABLE(vtable-verify,
905 [AS_HELP_STRING([--enable-vtable-verify],
906 [enable vtable verification feature])],,
907 [enable_vtable_verify=no])
908 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
909 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
910 [Define 0/1 if vtable verification feature is enabled.])
912 AC_ARG_ENABLE(objc-gc,
913 [AS_HELP_STRING([--enable-objc-gc],
914 [enable the use of Boehm's garbage collector with
915 the GNU Objective-C runtime])],
916 if test x$enable_objc_gc = xno; then
924 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
925 dwarf2="$with_dwarf2",
928 AC_ARG_ENABLE(shared,
929 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
931 case $enable_shared in
935 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
936 for pkg in $enableval; do
937 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
944 ], [enable_shared=yes])
945 AC_SUBST(enable_shared)
948 [ --disable-gcov don't provide libgcov and related host tools],
949 [], [enable_gcov=yes])
950 AC_SUBST(enable_gcov)
953 [AS_HELP_STRING([--with-specs=SPECS],
954 [add SPECS to driver command-line processing])],
955 [CONFIGURE_SPECS=$withval],
958 AC_SUBST(CONFIGURE_SPECS)
960 ACX_PKGVERSION([GCC])
961 ACX_BUGURL([https://gcc.gnu.org/bugs/])
963 # Allow overriding the default URL for documentation
964 AC_ARG_WITH(documentation-root-url,
965 AS_HELP_STRING([--with-documentation-root-url=URL],
966 [Root for documentation URLs]),
968 yes) AC_MSG_ERROR([documentation root URL not specified]) ;;
969 no) AC_MSG_ERROR([documentation root URL not specified]) ;;
970 *) DOCUMENTATION_ROOT_URL="$withval"
973 DOCUMENTATION_ROOT_URL="https://gcc.gnu.org/onlinedocs/gcc/"
975 AC_SUBST(DOCUMENTATION_ROOT_URL)
977 # Sanity check enable_languages in case someone does not run the toplevel
978 # configure # script.
979 AC_ARG_ENABLE(languages,
980 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
981 [case ,${enable_languages}, in
983 # go safe -- we cannot be much sure without the toplevel
985 # analysis of which target libs are present and usable
989 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
994 enable_languages=c,${enable_languages}
997 [enable_languages=c])
999 # If top-level libada has been disabled, then wire in install-gnatlib
1000 # invocation with `make install', so that one can build and install
1001 # the library manually with `make -C gcc all gnatlib gnattools install'.
1002 if test x"$enable_libada" = xno; then
1003 gnat_install_lib=gnat-install-lib
1007 AC_SUBST(gnat_install_lib)
1009 if test x"$enable_as_accelerator_for" != x; then
1010 AC_DEFINE(ACCEL_COMPILER, 1,
1011 [Define if this compiler should be built as the offload target compiler.])
1012 enable_as_accelerator=yes
1015 # In this case we expect offload compiler to be built as native, so we
1016 # need to rename the driver to avoid clashes with host's drivers.
1017 program_transform_name="s&^&${target}-&" ;;
1019 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
1020 program_transform_name=`echo $program_transform_name | sed $sedscript`
1021 accel_dir_suffix=/accel/${target_noncanonical}
1022 real_target_noncanonical=${enable_as_accelerator_for}
1024 AC_SUBST(enable_as_accelerator)
1025 AC_SUBST(real_target_noncanonical)
1026 AC_SUBST(accel_dir_suffix)
1028 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
1029 tgt=`echo $tgt | sed 's/=.*//'`
1031 if echo "$tgt" | grep "^hsa" > /dev/null ; then
1037 omp_device_property=omp-device-properties-i386
1038 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/i386/t-omp-device"
1041 omp_device_property=omp-device-properties-nvptx
1042 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/nvptx/t-omp-device"
1045 omp_device_properties="${omp_device_properties} ${tgt}=${omp_device_property}"
1046 omp_device_property_deps="${omp_device_property_deps} ${omp_device_property}"
1049 if test x"$offload_targets" = x; then
1050 offload_targets=$tgt
1052 offload_targets="$offload_targets,$tgt"
1055 AC_SUBST(omp_device_properties)
1056 AC_SUBST(omp_device_property_deps)
1058 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
1059 [Define to offload targets, separated by commas.])
1060 if test x"$enable_offloading" != x; then
1061 AC_DEFINE(ENABLE_OFFLOADING, 1,
1062 [Define this to enable support for offloading.])
1064 AC_DEFINE(ENABLE_OFFLOADING, 0,
1065 [Define this to enable support for offloading.])
1068 if test x"$enable_hsa" = x1 ; then
1069 AC_DEFINE(ENABLE_HSA, 1,
1070 [Define this to enable support for generating HSAIL.])
1073 AC_ARG_WITH(multilib-list,
1074 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
1076 with_multilib_list=default)
1078 # -------------------------
1079 # Checks for other programs
1080 # -------------------------
1084 # Find some useful tools
1086 # We need awk to create options.c and options.h.
1087 # Bail out if it's missing.
1089 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1096 AC_SUBST(ranlib_flags)
1100 # See if cmp has --ignore-initial.
1101 gcc_AC_PROG_CMP_IGNORE_INITIAL
1103 # See if we have the mktemp command.
1104 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1106 # See if makeinfo has been installed and is modern enough
1107 # that we can use it.
1108 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1109 [GNU texinfo.* \([0-9][0-9.]*\)],
1110 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1111 if test $gcc_cv_prog_makeinfo_modern = no; then
1113 *** Makeinfo is missing or too old.
1114 *** Info documentation will not be built.])
1119 AC_SUBST(BUILD_INFO)
1121 # Is pod2man recent enough to regenerate manpages?
1122 AC_MSG_CHECKING([for recent Pod::Man])
1123 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1125 GENERATED_MANPAGES=generated-manpages
1130 AC_SUBST(GENERATED_MANPAGES)
1132 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1135 dnl Don't use AC_PROG_LEX; we insist on flex.
1136 dnl LEXLIB is not useful in gcc.
1137 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1140 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1142 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1143 # check for build == host before using them.
1146 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1147 && test -d ../binutils ; then
1148 NM='${objdir}/../binutils/nm-new'
1150 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1154 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1155 && test -d ../binutils ; then
1156 AR='${objdir}/../binutils/ar'
1158 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1161 # The jit documentation looks better if built with sphinx, but can be
1162 # built with texinfo if sphinx is not available.
1163 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1164 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1166 # --------------------
1167 # Checks for C headers
1168 # --------------------
1170 # Need to reject headers which give warnings, so that the -Werror bootstrap
1171 # works later. *sigh* This needs to come before all header checks.
1178 AC_HEADER_TIOCGWINSZ
1179 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1180 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1181 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1182 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1184 # Check for thread headers.
1185 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1186 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1188 # These tests can't be done till we know if we have limits.h.
1192 # ----------------------
1193 # Checks for C++ headers
1194 # ----------------------
1196 dnl Autoconf will give an error in the configure script if there is no
1197 dnl C++ preprocessor. Hack to prevent that.
1198 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1200 m4_popdef([AC_MSG_ERROR])[]dnl
1202 AC_CHECK_HEADERS(unordered_map)
1203 AC_CHECK_HEADERS(tr1/unordered_map)
1204 AC_CHECK_HEADERS(ext/hash_map)
1207 # Dependency checking.
1211 AC_CONFIG_COMMANDS([gccdepdir],[
1212 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1213 for lang in $subdirs c-family common
1215 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1216 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1218 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1225 # These libraries may be used by collect2.
1226 # We may need a special search path to get them linked.
1227 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1229 for libs in '' -lld -lmld \
1230 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1231 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1234 AC_TRY_LINK_FUNC(ldopen,
1235 [gcc_cv_collect2_libs="$libs"; break])
1238 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1239 case $gcc_cv_collect2_libs in
1241 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1243 AC_SUBST(COLLECT2_LIBS)
1245 # When building Ada code on Alpha, we need exc_resume which is usually in
1246 # -lexc. So test for it.
1249 AC_SEARCH_LIBS(exc_resume, exc)
1252 AC_SUBST(GNAT_LIBEXC)
1254 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1257 AC_SEARCH_LIBS(kstat_open, kstat)
1258 EXTRA_GCC_LIBS="$LIBS"
1260 AC_SUBST(EXTRA_GCC_LIBS)
1262 # Some systems put ldexp and frexp in libm instead of libc; assume
1263 # they're both in the same place. jcf-dump needs them.
1266 AC_SEARCH_LIBS(ldexp, m)
1271 # Some systems need dlopen
1274 AC_SEARCH_LIBS(dlopen, dl)
1279 # Use <inttypes.h> only if it exists,
1280 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1282 AC_MSG_CHECKING(for inttypes.h)
1283 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1284 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1285 [[#define __STDC_FORMAT_MACROS
1286 #include <sys/types.h>
1287 #include <inttypes.h>]],
1292 [gcc_cv_header_inttypes_h=yes],
1293 [gcc_cv_header_inttypes_h=no])])
1294 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1295 if test $gcc_cv_header_inttypes_h = yes; then
1296 AC_DEFINE(HAVE_INTTYPES_H, 1,
1297 [Define if you have a working <inttypes.h> header file.])
1300 # Look for the ZSTD package.
1303 AC_SUBST(ZSTD_INCLUDE)
1308 [AS_HELP_STRING([--with-zstd=PATH],
1309 [specify prefix directory for installed zstd library.
1310 Equivalent to --with-zstd-include=PATH/include
1311 plus --with-zstd-lib=PATH/lib])])
1312 AC_ARG_WITH(zstd-include,
1313 [AS_HELP_STRING([--with-zstd-include=PATH],
1314 [specify directory for installed zstd include files])])
1315 AC_ARG_WITH(zstd-lib,
1316 [AS_HELP_STRING([--with-zstd-lib=PATH],
1317 [specify directory for the installed zstd library])])
1318 case "x$with_zstd" in
1324 *) ZSTD_INCLUDE=$with_zstd/include
1325 ZSTD_LIB=$with_zstd/lib
1328 if test "x$with_zstd_include" != x; then
1329 ZSTD_INCLUDE=$with_zstd_include
1331 if test "x$with_zstd_lib" != x; then
1332 ZSTD_LIB=$with_zstd_lib
1334 if test "x$ZSTD_INCLUDE" != x \
1335 && test "x$ZSTD_INCLUDE" != xno; then
1336 ZSTD_CPPFLAGS=-I$ZSTD_INCLUDE
1338 if test "x$ZSTD_LIB" != x \
1339 && test "x$ZSTD_LIB" != xno; then
1340 ZSTD_LDFLAGS=-L$ZSTD_LIB
1343 CXXFLAGS="$CXXFLAGS $ZSTD_CPPFLAGS"
1344 LDFLAGS="$LDFLAGS $ZSTD_LDFLAGS"
1346 AC_MSG_CHECKING(for zstd.h)
1347 AC_CACHE_VAL(gcc_cv_header_zstd_h,
1348 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1349 [[#include <zstd.h>]])],
1350 [gcc_cv_header_zstd_h=yes],
1351 [gcc_cv_header_zstd_h=no])])
1352 AC_MSG_RESULT($gcc_cv_header_zstd_h)
1353 if test $gcc_cv_header_zstd_h = yes; then
1354 AC_DEFINE(HAVE_ZSTD_H, 1,
1355 [Define if you have a working <zstd.h> header file.])
1358 # LTO can use zstd compression algorithm
1361 AC_SEARCH_LIBS(ZSTD_compress, zstd)
1366 dnl Disabled until we have a complete test for buggy enum bitfields.
1367 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1369 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1370 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1371 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1372 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1373 putchar_unlocked putc_unlocked)
1374 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1375 popen sysconf strsignal getrusage nl_langinfo \
1376 gettimeofday mbstowcs wcswidth mmap setlocale \
1377 gcc_UNLOCKED_FUNCS madvise)
1379 if test x$ac_cv_func_mbstowcs = xyes; then
1380 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1381 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1387 [gcc_cv_func_mbstowcs_works=yes],
1388 [gcc_cv_func_mbstowcs_works=no],
1389 [gcc_cv_func_mbstowcs_works=yes])])
1390 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1391 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1392 [Define this macro if mbstowcs does not crash when its
1393 first argument is NULL.])
1397 AC_CHECK_TYPE(ssize_t, int)
1398 AC_CHECK_TYPE(caddr_t, char *)
1400 GCC_AC_FUNC_MMAP_BLACKLIST
1404 # Under VMS, vfork works very differently than on Unix. The standard test
1405 # won't work, and it isn't easily adaptable. It makes more sense to
1407 ac_cv_func_vfork_works=yes
1414 # Until we have in-tree GNU iconv:
1416 if test -f "$LTLIBICONV"; then
1417 LIBICONV_DEP=$LTLIBICONV
1419 AC_SUBST(LIBICONV_DEP)
1425 # We will need to find libiberty.h and ansidecl.h
1426 saved_CFLAGS="$CFLAGS"
1427 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1428 saved_CXXFLAGS="$CXXFLAGS"
1429 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1431 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1432 # normal autoconf function for these. But force definition of
1433 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1434 # basename handling in libiberty.h.
1435 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1436 #undef HAVE_DECL_BASENAME
1437 #define HAVE_DECL_BASENAME 1
1438 #include "ansidecl.h"
1439 #include "system.h"])
1441 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1442 madvise stpcpy strnlen strsignal strverscmp \
1443 strtol strtoul strtoll strtoull setenv unsetenv \
1444 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1445 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1446 #include "ansidecl.h"
1447 #include "system.h"])
1449 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1450 #include "ansidecl.h"
1452 #ifdef HAVE_SYS_RESOURCE_H
1453 #include <sys/resource.h>
1457 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1458 #include "ansidecl.h"
1460 #ifdef HAVE_SYS_RESOURCE_H
1461 #include <sys/resource.h>
1463 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1464 [Define to `long' if <sys/resource.h> doesn't define.])])
1466 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1467 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1468 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1469 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1470 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1471 #include "ansidecl.h"
1480 gcc_AC_CHECK_DECLS(times, , ,[
1481 #include "ansidecl.h"
1483 #ifdef HAVE_SYS_TIMES_H
1484 #include <sys/times.h>
1488 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1489 #include "ansidecl.h"
1494 # More time-related stuff.
1495 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1496 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1497 #include "ansidecl.h"
1499 #ifdef HAVE_SYS_TIMES_H
1500 #include <sys/times.h>
1502 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1503 if test $ac_cv_struct_tms = yes; then
1504 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1505 [Define if <sys/times.h> defines struct tms.])
1508 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1509 # revisit after autoconf 2.50.
1510 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1511 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1512 #include "ansidecl.h"
1514 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1515 if test $gcc_cv_type_clock_t = yes; then
1516 AC_DEFINE(HAVE_CLOCK_T, 1,
1517 [Define if <time.h> defines clock_t.])
1520 # Check if F_SETLKW is supported by fcntl.
1521 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1522 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1523 #include <fcntl.h>]], [[
1529 return fcntl (1, F_SETLKW, &fl);]])],
1530 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1531 if test $ac_cv_f_setlkw = yes; then
1532 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1533 [Define if F_SETLKW supported by fcntl.])
1536 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1537 CFLAGS="$saved_CFLAGS"
1538 CXXFLAGS="$saved_CXXFLAGS"
1540 # mkdir takes a single argument on some systems.
1541 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1549 # With Setjmp/Longjmp based exception handling.
1550 AC_ARG_ENABLE(sjlj-exceptions,
1551 [AS_HELP_STRING([--enable-sjlj-exceptions],
1552 [arrange to use setjmp/longjmp exception handling])],
1555 if test $enableval != yes; then
1556 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1561 force_sjlj_exceptions=yes],
1564 force_sjlj_exceptions=yes
1568 force_sjlj_exceptions=yes
1572 force_sjlj_exceptions=no
1575 if test $force_sjlj_exceptions = yes; then
1576 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1577 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1578 [Define 0/1 to force the choice for exception handling model.])
1581 # --------------------------------------------------------
1582 # Build, host, and target specific configuration fragments
1583 # --------------------------------------------------------
1585 # Collect build-machine-specific information.
1586 . ${srcdir}/config.build || exit 1
1588 # Collect host-machine-specific information.
1589 . ${srcdir}/config.host || exit 1
1593 # Collect target-machine-specific information.
1594 . ${srcdir}/config.gcc || exit 1
1596 extra_objs="${host_extra_objs} ${extra_objs}"
1597 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1599 # Default the target-machine variables that were not explicitly set.
1600 if test x"$tm_file" = x
1601 then tm_file=$cpu_type/$cpu_type.h; fi
1603 if test x"$extra_headers" = x
1604 then extra_headers=; fi
1606 if test x$md_file = x
1607 then md_file=$cpu_type/$cpu_type.md; fi
1609 if test x$out_file = x
1610 then out_file=$cpu_type/$cpu_type.c; fi
1612 if test x"$tmake_file" = x
1613 then tmake_file=$cpu_type/t-$cpu_type
1616 # Support --enable-initfini-array.
1617 if test x$enable_initfini_array != xno; then
1618 tm_file="${tm_file} initfini-array.h"
1621 if test x"$dwarf2" = xyes
1622 then tm_file="$tm_file tm-dwarf2.h"
1625 # Say what files are being used for the output code and MD file.
1626 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1627 echo "Using \`$srcdir/config/$md_file' as machine description file."
1629 # If any of the xm_file variables contain nonexistent files, warn
1630 # about them and drop them.
1633 for x in $build_xm_file; do
1634 if test -f $srcdir/config/$x
1636 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1642 for x in $host_xm_file; do
1643 if test -f $srcdir/config/$x
1645 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1651 for x in $xm_file; do
1652 if test -f $srcdir/config/$x
1654 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1660 for f in $tm_file; do
1663 if test $count = ax; then
1664 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1666 echo "Using the following target machine macro files:"
1667 for f in $tm_file; do
1668 echo " $srcdir/config/$f"
1672 if test x$use_long_long_for_widest_fast_int = xyes; then
1673 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1674 [Define to 1 if the 'long long' type is wider than 'long' but still
1675 efficiently supported by the host hardware.])
1678 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1679 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1681 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1682 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1685 for f in $host_xm_file; do
1688 if test $count = a; then
1690 elif test $count = ax; then
1691 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1693 echo "Using the following host machine macro files:"
1694 for f in $host_xm_file; do
1695 echo " $srcdir/config/$f"
1698 echo "Using ${out_host_hook_obj} for host machine hooks."
1700 if test "$host_xm_file" != "$build_xm_file"; then
1702 for f in $build_xm_file; do
1705 if test $count = a; then
1707 elif test $count = ax; then
1708 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1710 echo "Using the following build machine macro files:"
1711 for f in $build_xm_file; do
1712 echo " $srcdir/config/$f"
1717 if test -n "$configured_native_system_header_dir"; then
1718 native_system_header_dir=$configured_native_system_header_dir
1720 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1721 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1725 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1726 gcc_cv_mcontext_underscores,
1727 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1728 #include <sys/cdefs.h>
1729 #include <sys/signal.h>
1730 #include <ucontext.h>
1731 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1733 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1734 if test $gcc_cv_mcontext_underscores = yes; then
1735 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1736 [mcontext_t fields start with __])
1745 # Check if a valid thread package
1746 case ${enable_threads} in
1749 target_thread_file='single'
1753 target_thread_file='single'
1755 aix | dce | lynx | mipssde | posix | rtems | \
1756 single | tpf | vxworks | win32)
1757 target_thread_file=${enable_threads}
1760 echo "${enable_threads} is an unknown thread package" 1>&2
1765 if test x${thread_file} = x; then
1766 # No thread file set by target-specific clauses in config.gcc,
1767 # so use file chosen by default logic above
1768 thread_file=${target_thread_file}
1776 if test x$enable___cxa_atexit = xyes || \
1777 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1778 if test x$host = x$target; then
1780 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1781 # keyed to flag_use_cxa_atexit
1789 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1790 [echo "__cxa_atexit can't be enabled on this target"])
1794 # We can't check for __cxa_atexit when building a cross, so assume
1798 if test x$use_cxa_atexit = xyes; then
1799 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1800 [Define if you want to use __cxa_atexit, rather than atexit, to
1801 register C++ destructors for local statics and global objects.
1802 This is essential for fully standards-compliant handling of
1803 destructors, but requires __cxa_atexit in libc.])
1807 # Look for a file containing extra machine modes.
1808 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1809 extra_modes_file='$(srcdir)'/config/${extra_modes}
1810 AC_SUBST(extra_modes_file)
1811 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1812 [Define to the name of a file containing a list of extra machine modes
1813 for this architecture.])
1816 # Convert extra_options into a form suitable for Makefile use.
1819 for f in $extra_options; do
1820 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1821 all_opt_files="$all_opt_files $srcdir/config/$f"
1823 AC_SUBST(extra_opt_files)
1825 # auto-host.h is the file containing items generated by autoconf and is
1826 # the first file included by config.h.
1827 # If host=build, it is correct to have bconfig include auto-host.h
1828 # as well. If host!=build, we are in error and need to do more
1829 # work to find out the build config parameters.
1830 if test x$host = x$build
1832 build_auto=auto-host.h
1834 # We create a subdir, then run autoconf in the subdir.
1835 # To prevent recursion we set host and build for the new
1836 # invocation of configure to the build for this invocation
1843 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1844 *) realsrcdir=../${srcdir};;
1846 # Clearing GMPINC is necessary to prevent host headers being
1847 # used by the build compiler. Defining GENERATOR_FILE stops
1848 # system.h from including gmp.h.
1849 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1850 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1851 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1852 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1853 ${realsrcdir}/configure \
1854 --enable-languages=${enable_languages-all} \
1855 --target=$target_alias --host=$build_alias --build=$build_alias
1857 # We just finished tests for the build machine, so rename
1858 # the file auto-build.h in the gcc directory.
1859 mv auto-host.h ../auto-build.h
1862 build_auto=auto-build.h
1864 AC_SUBST(build_subdir)
1866 tm_file="${tm_file} defaults.h"
1867 tm_p_file="${tm_p_file} tm-preds.h"
1868 tm_d_file="${tm_d_file} defaults.h"
1869 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1870 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1871 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1872 # put this back in temporarily.
1873 xm_file="auto-host.h ansidecl.h ${xm_file}"
1880 # Compile in configure arguments.
1881 if test -f configargs.h ; then
1882 # Being re-configured.
1883 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1884 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
1885 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
1886 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1889 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1892 # Double all backslashes and backslash all quotes to turn
1893 # gcc_config_arguments into a C string.
1894 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1895 $gcc_config_arguments
1897 gcc_config_arguments_str=`cat conftest.out`
1900 cat > configargs.h <<EOF
1901 /* Generated automatically. */
1902 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1903 static const char thread_model[] = "$thread_file";
1905 static const struct {
1906 const char *name, *value;
1907 } configure_default_options[] = $configure_default_options;
1912 gcc_BASEVER=`cat $srcdir/BASE-VER`
1913 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1914 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1915 if test -f $srcdir/REVISION ; then
1916 gcc_REVISION=`cat $srcdir/REVISION`
1920 cat > plugin-version.h <<EOF
1921 #include "configargs.h"
1923 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1924 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1925 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1926 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1928 static char basever[] = "$gcc_BASEVER";
1929 static char datestamp[] = "$gcc_DATESTAMP";
1930 static char devphase[] = "$gcc_DEVPHASE";
1931 static char revision[] = "$gcc_REVISION";
1933 /* FIXME plugins: We should make the version information more precise.
1934 One way to do is to add a checksum. */
1936 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1938 configuration_arguments};
1942 # Determine what GCC version number to use in filesystem paths.
1945 # Internationalization
1946 ZW_GNU_GETTEXT_SISTER_DIR
1948 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1949 # -liconv on the link line twice.
1950 case "$LIBINTL" in *$LIBICONV*)
1954 AC_ARG_ENABLE(secureplt,
1955 [AS_HELP_STRING([--enable-secureplt],
1956 [enable -msecure-plt by default for PowerPC])],
1959 AC_ARG_ENABLE(mingw-wildcard,
1960 [AS_HELP_STRING([--enable-mingw-wildcard],
1961 [Set whether to expand wildcard on command-line.
1962 Default to platform configuration])],
1963 [],[enable_mingw_wildcard=platform])
1964 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
1965 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
1966 $(test x"$enable_mingw_wildcard" = xno; echo $?),
1967 [Value to set mingw's _dowildcard to.])])
1969 AC_ARG_ENABLE(large-address-aware,
1970 [AS_HELP_STRING([--enable-large-address-aware],
1971 [Link mingw executables with --large-address-aware])])
1972 AS_IF([test x"$enable_large_address_aware" = xyes],
1973 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
1974 [Define if we should link mingw executables with --large-address-aware])])
1976 AC_ARG_ENABLE(leading-mingw64-underscores,
1977 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1978 [enable leading underscores on 64 bit mingw targets]),
1980 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1981 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1982 [Define if we should use leading underscore on 64 bit mingw targets])])
1985 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1988 AC_ARG_ENABLE(frame-pointer,
1989 [AS_HELP_STRING([--enable-frame-pointer],
1990 [enable -fno-omit-frame-pointer by default for x86])], [],
1993 linux* | gnu* | darwin[[8912]]* | cygwin* | mingw*)
1994 # Enable -fomit-frame-pointer by default for these systems with DWARF2.
1995 enable_frame_pointer=no
1998 enable_frame_pointer=yes
2004 i[[34567]]86-*-* | x86_64-*-*)
2005 if test "x$enable_cld" = xyes; then
2006 tm_defines="${tm_defines} USE_IX86_CLD=1"
2008 if test "x$enable_frame_pointer" = xyes; then
2009 tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1"
2014 # Windows32 Registry support for specifying GCC installation paths.
2015 AC_ARG_ENABLE(win32-registry,
2016 [AS_HELP_STRING([--disable-win32-registry],
2017 [disable lookup of installation paths in the
2018 Registry on Windows hosts])
2019 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
2020 AS_HELP_STRING([--enable-win32-registry=KEY],
2021 [use KEY instead of GCC version as the last portion
2022 of the registry key])],,)
2025 win32 | pe | cygwin* | mingw32*)
2026 if test "x$enable_win32_registry" != xno; then
2027 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
2030 if test "x$enable_win32_registry" != xno; then
2031 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
2032 [Define to 1 if installation paths should be looked up in the Windows
2033 Registry. Ignored on non-Windows hosts.])
2035 if test "x$enable_win32_registry" != xyes \
2036 && test "x$enable_win32_registry" != x; then
2037 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
2038 [Define to be the last component of the Windows registry key under which
2039 to look for installation paths. The full key used will be
2040 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
2041 The default is the GCC version number.])
2047 # Get an absolute path to the GCC top-level source directory
2048 holddir=`${PWDCMD-pwd}`
2050 topdir=`${PWDCMD-pwd}`
2053 # Conditionalize the makefile for this host machine.
2055 for f in ${host_xmake_file}
2057 if test -f ${srcdir}/config/$f
2059 xmake_file="${xmake_file} \$(srcdir)/config/$f"
2063 # Conditionalize the makefile for this target machine.
2065 for f in ${tmake_file}
2067 if test -f ${srcdir}/config/$f
2069 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
2072 tmake_file="${tmake_file_}${omp_device_property_tmake_file}"
2074 out_object_file=`basename $out_file .c`.o
2075 common_out_object_file=`basename $common_out_file .c`.o
2077 tm_file_list="options.h"
2078 tm_include_list="options.h insn-constants.h"
2079 for f in $tm_file; do
2082 f=`echo $f | sed 's/^..//'`
2083 tm_file_list="${tm_file_list} $f"
2084 tm_include_list="${tm_include_list} $f"
2087 tm_file_list="${tm_file_list} \$(srcdir)/$f"
2088 tm_include_list="${tm_include_list} $f"
2091 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
2092 tm_include_list="${tm_include_list} config/$f"
2099 for f in $tm_p_file; do
2102 tm_p_file_list="${tm_p_file_list} $f"
2103 tm_p_include_list="${tm_p_include_list} $f"
2106 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
2107 tm_p_include_list="${tm_p_include_list} config/$f"
2112 tm_d_include_list="options.h insn-constants.h"
2113 for f in $tm_d_file; do
2116 tm_d_file_list="${tm_d_file_list} \$(srcdir)/$f"
2117 tm_d_include_list="${tm_d_include_list} $f"
2120 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
2121 tm_d_include_list="${tm_d_include_list} config/$f"
2128 for f in $xm_file; do
2131 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2132 xm_include_list="${xm_include_list} $f"
2135 xm_file_list="${xm_file_list} $f"
2136 xm_include_list="${xm_include_list} $f"
2139 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2140 xm_include_list="${xm_include_list} config/$f"
2146 host_xm_include_list=
2147 for f in $host_xm_file; do
2150 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2151 host_xm_include_list="${host_xm_include_list} $f"
2154 host_xm_file_list="${host_xm_file_list} $f"
2155 host_xm_include_list="${host_xm_include_list} $f"
2158 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2159 host_xm_include_list="${host_xm_include_list} config/$f"
2165 for f in $build_xm_file; do
2168 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2169 build_xm_include_list="${build_xm_include_list} $f"
2171 auto-build.h | auto-host.h )
2172 build_xm_file_list="${build_xm_file_list} $f"
2173 build_xm_include_list="${build_xm_include_list} $f"
2176 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2177 build_xm_include_list="${build_xm_include_list} config/$f"
2182 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2183 # cross-compiler which does not use the native headers and libraries.
2184 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2185 CROSS= AC_SUBST(CROSS)
2186 ALL=all.internal AC_SUBST(ALL)
2187 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2188 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2190 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2191 test x$build != x$host || test "x$with_build_sysroot" != x; then
2192 if test "x$with_build_sysroot" != x; then
2193 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2195 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2198 if test x$host != x$target
2200 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2202 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2203 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2204 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2207 if test "x$with_build_sysroot" != "x"; then
2208 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2209 elif test "x$with_sysroot" = x; then
2210 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2211 elif test "x$with_sysroot" = xyes; then
2212 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2214 target_header_dir="${with_sysroot}${native_system_header_dir}"
2217 target_header_dir=${native_system_header_dir}
2220 # If this is a cross-compiler that does not
2221 # have its own set of headers then define
2224 # If this is using newlib, without having the headers available now,
2225 # then define inhibit_libc in LIBGCC2_CFLAGS.
2226 # This prevents libgcc2 from containing any code which requires libc
2228 : ${inhibit_libc=false}
2229 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2230 test x$with_newlib = xyes ; } &&
2231 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2234 AC_SUBST(inhibit_libc)
2236 # When building gcc with a cross-compiler, we need to adjust things so
2237 # that the generator programs are still built with the native compiler.
2238 # Also, we cannot run fixincludes.
2240 # These are the normal (build=host) settings:
2241 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2242 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2243 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2244 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2245 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2246 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2248 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2249 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2251 # And these apply if build != host, or we are generating coverage data
2252 if test x$build != x$host || test "x$coverage_flags" != x
2254 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2255 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2256 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2258 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2259 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2260 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2261 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2263 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2264 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2266 # Expand extra_headers to include complete path.
2267 # This substitutes for lots of t-* files.
2269 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2270 for file in ${extra_headers} ; do
2271 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2274 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2275 if test x"$use_gcc_tgmath" = xyes
2276 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2279 # Define collect2 in Makefile.
2280 case $host_can_use_collect2 in
2282 *) collect2='collect2$(exeext)' ;;
2284 AC_SUBST([collect2])
2286 # Add a definition of USE_COLLECT2 if system wants one.
2287 case $use_collect2 in
2288 no) use_collect2= ;;
2291 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2292 xm_defines="${xm_defines} USE_COLLECT2"
2293 case $host_can_use_collect2 in
2295 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2301 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2302 [Define to the name of the LTO plugin DSO that must be
2303 passed to the linker's -plugin=LIB option.])
2305 # ---------------------------
2306 # Assembler & linker features
2307 # ---------------------------
2309 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2310 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2311 # However when ld-new is first executed from the build tree, libtool will
2312 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2313 # to the build tree. While doing this we need to use the previous-stage
2314 # linker, or we have an infinite loop. The presence of a shell script as
2315 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2316 # the gcc/collect-ld script. So we need to know how libtool works, or
2317 # exec-tool will fail.
2319 m4_defun([_LT_CONFIG_COMMANDS], [])
2322 AC_SUBST(enable_fast_install)
2324 # Identify the assembler which will work hand-in-glove with the newly
2325 # built GCC, so that we can examine its features. This is the assembler
2326 # which will be driven by the driver program.
2328 # If build != host, and we aren't building gas in-tree, we identify a
2329 # build->target assembler and hope that it will have the same features
2330 # as the host->target assembler we'll be using.
2331 gcc_cv_gas_major_version=
2332 gcc_cv_gas_minor_version=
2333 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2335 m4_pattern_allow([AS_FOR_TARGET])dnl
2336 AS_VAR_SET_IF(gcc_cv_as,, [
2337 if test -x "$DEFAULT_ASSEMBLER"; then
2338 gcc_cv_as="$DEFAULT_ASSEMBLER"
2339 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2340 && test -f ../gas/Makefile \
2341 && test x$build = x$host; then
2342 gcc_cv_as=../gas/as-new$build_exeext
2343 elif test -x as$build_exeext; then
2344 # Build using assembler in the current directory.
2345 gcc_cv_as=./as$build_exeext
2346 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2347 gcc_cv_as="$AS_FOR_TARGET"
2349 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2352 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2353 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2354 case "$ORIGINAL_AS_FOR_TARGET" in
2355 ./as | ./as$build_exeext) ;;
2356 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2359 AC_MSG_CHECKING(what assembler to use)
2360 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2361 # Single tree build which includes gas. We want to prefer it
2362 # over whatever linker top-level may have detected, since
2363 # we'll use what we're building after installation anyway.
2364 AC_MSG_RESULT(newly built gas)
2366 _gcc_COMPUTE_GAS_VERSION
2367 in_tree_gas_is_elf=no
2368 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2369 || (grep 'obj_format = multi' ../gas/Makefile \
2370 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2372 in_tree_gas_is_elf=yes
2375 AC_MSG_RESULT($gcc_cv_as)
2381 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2382 [case "${enableval}" in
2388 install_gold_as_default=no
2390 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2391 [case "${enableval}" in
2393 install_gold_as_default=yes
2396 if test x${default_ld} != x; then
2397 install_gold_as_default=yes
2403 AC_MSG_ERROR([invalid --enable-gold argument])
2407 # Identify the linker which will work hand-in-glove with the newly
2408 # built GCC, so that we can examine its features. This is the linker
2409 # which will be driven by the driver program.
2411 # If build != host, and we aren't building gas in-tree, we identify a
2412 # build->target linker and hope that it will have the same features
2413 # as the host->target linker we'll be using.
2414 gcc_cv_gld_major_version=
2415 gcc_cv_gld_minor_version=
2416 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2417 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2418 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2420 AS_VAR_SET_IF(gcc_cv_ld,, [
2421 if test -x "$DEFAULT_LINKER"; then
2422 gcc_cv_ld="$DEFAULT_LINKER"
2423 elif test $install_gold_as_default = yes \
2424 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2425 && test -f ../gold/Makefile \
2426 && test x$build = x$host; then
2427 gcc_cv_ld=../gold/ld-new$build_exeext
2428 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2429 && test -f ../ld/Makefile \
2430 && test x$build = x$host; then
2431 gcc_cv_ld=../ld/ld-new$build_exeext
2432 elif test -x collect-ld$build_exeext; then
2433 # Build using linker in the current directory.
2434 gcc_cv_ld=./collect-ld$build_exeext
2435 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2436 gcc_cv_ld="$LD_FOR_TARGET"
2438 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2441 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2442 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2443 # if the PLUGIN_LD is set ld-new, just have it as ld
2444 # as that is the installed named.
2445 if test x$PLUGIN_LD_SUFFIX = xld-new \
2446 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2449 AC_ARG_WITH(plugin-ld,
2450 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2451 [if test x"$withval" != x; then
2452 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2453 PLUGIN_LD_SUFFIX="$withval"
2455 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2456 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2458 # Check to see if we are using gold instead of ld
2459 AC_MSG_CHECKING(whether we are using gold)
2461 if test x$gcc_cv_ld != x; then
2462 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2463 | grep "GNU gold" > /dev/null; then
2467 AC_MSG_RESULT($ld_is_gold)
2469 AC_MSG_CHECKING(gold linker with split stack support as non default)
2470 # Check to see if default ld is not gold, but gold is
2471 # available and has support for split stack. If gcc was configured
2472 # with gold then no checking is done.
2474 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2476 # For platforms other than powerpc64*, enable as appropriate.
2479 ld_gold=`which ${gcc_cv_ld}.gold`
2480 # Make sure this gold has minimal split stack support
2481 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2482 ld_vers=`$ld_gold --version | sed 1q`
2483 gold_vers=`echo $ld_vers | sed -n \
2484 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2486 # check that the gold version contains the complete split stack support
2487 # on powerpc64 big and little endian
2489 case "$gold_vers" in
2490 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2492 *) gold_non_default=no
2498 if test $gold_non_default = yes; then
2499 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2500 [Define if the gold linker supports split stack and is available as a non-default])
2503 AC_MSG_RESULT($gold_non_default)
2505 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2506 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2507 case "$ORIGINAL_LD_FOR_TARGET" in
2508 ./collect-ld | ./collect-ld$build_exeext) ;;
2509 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2512 AC_MSG_CHECKING(what linker to use)
2513 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2514 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2515 # Single tree build which includes ld. We want to prefer it
2516 # over whatever linker top-level may have detected, since
2517 # we'll use what we're building after installation anyway.
2518 AC_MSG_RESULT(newly built ld)
2520 in_tree_ld_is_elf=no
2521 if (grep 'EMUL = .*elf' ../ld/Makefile \
2522 || grep 'EMUL = .*linux' ../ld/Makefile \
2523 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2524 in_tree_ld_is_elf=yes
2525 elif test "$ld_is_gold" = yes; then
2526 in_tree_ld_is_elf=yes
2528 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
2531 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2532 if test x$gcc_cv_gld_version != x; then
2536 case $gcc_cv_gld_version in
2539 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2542 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2543 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2545 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2546 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2548 AC_MSG_RESULT($gcc_cv_ld)
2550 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2551 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2552 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2555 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2556 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2558 # Figure out what nm we will be using.
2559 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2560 AS_VAR_SET_IF(gcc_cv_nm,, [
2561 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2562 && test -f ../binutils/Makefile \
2563 && test x$build = x$host; then
2564 gcc_cv_nm=../binutils/nm-new$build_exeext
2565 elif test -x nm$build_exeext; then
2566 gcc_cv_nm=./nm$build_exeext
2567 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2568 gcc_cv_nm="$NM_FOR_TARGET"
2570 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2573 AC_MSG_CHECKING(what nm to use)
2574 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2575 # Single tree build which includes binutils.
2576 AC_MSG_RESULT(newly built nm)
2579 AC_MSG_RESULT($gcc_cv_nm)
2583 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2584 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2585 case "$ORIGINAL_NM_FOR_TARGET" in
2586 ./nm | ./nm$build_exeext) ;;
2587 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2591 # Figure out what objdump we will be using.
2592 AS_VAR_SET_IF(gcc_cv_objdump,, [
2593 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2594 && test -f ../binutils/Makefile \
2595 && test x$build = x$host; then
2596 # Single tree build which includes binutils.
2597 gcc_cv_objdump=../binutils/objdump$build_exeext
2598 elif test -x objdump$build_exeext; then
2599 gcc_cv_objdump=./objdump$build_exeext
2600 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2601 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2603 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2606 AC_MSG_CHECKING(what objdump to use)
2607 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2608 # Single tree build which includes binutils.
2609 AC_MSG_RESULT(newly built objdump)
2610 elif test x$gcc_cv_objdump = x; then
2611 AC_MSG_RESULT(not found)
2613 AC_MSG_RESULT($gcc_cv_objdump)
2616 # Figure out what readelf we will be using.
2617 AS_VAR_SET_IF(gcc_cv_readelf,, [
2618 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2619 && test -f ../binutils/Makefile \
2620 && test x$build = x$host; then
2621 # Single tree build which includes binutils.
2622 gcc_cv_readelf=../binutils/readelf$build_exeext
2623 elif test -x readelf$build_exeext; then
2624 gcc_cv_readelf=./readelf$build_exeext
2625 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2626 gcc_cv_readelf="$READELF_FOR_TARGET"
2628 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2631 AC_MSG_CHECKING(what readelf to use)
2632 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2633 # Single tree build which includes binutils.
2634 AC_MSG_RESULT(newly built readelf)
2635 elif test x$gcc_cv_readelf = x; then
2636 AC_MSG_RESULT(not found)
2638 AC_MSG_RESULT($gcc_cv_readelf)
2641 # Figure out what otool we will be using.
2642 AS_VAR_SET_IF(gcc_cv_otool,, [
2643 if test -x otool$build_exeext; then
2644 gcc_cv_otool=./otool$build_exeext
2645 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2646 gcc_cv_otool="$OTOOL_FOR_TARGET"
2648 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2651 AC_MSG_CHECKING(what otool to use)
2652 if test x$gcc_cv_otool = x; then
2653 AC_MSG_RESULT(not found)
2655 AC_MSG_RESULT($gcc_cv_otool)
2658 # Figure out what assembler alignment features are present.
2659 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2663 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2664 [Define if your assembler supports .balign and .p2align.])])
2666 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2669 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2670 [Define if your assembler supports specifying the maximum number
2671 of bytes to skip when using the GAS .p2align command.])])
2673 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2676 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2677 [Define if your assembler supports .literal16.])])
2679 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2681 [conftest_label1: .word 0
2683 conftest_label2: .word 0
2685 [if test x$gcc_cv_nm != x; then
2686 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2687 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2688 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2690 else gcc_cv_as_subsection_m1=yes
2692 rm -f conftest.nm1 conftest.nm2
2694 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2695 [Define if your assembler supports .subsection and .subsection -1 starts
2696 emitting at the beginning of your section.])])
2698 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2701 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2703 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2705 [ .weakref foobar, barfnot],,
2706 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2708 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2711 .NSUBSPA $CODE$,COMDAT],,
2712 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2714 # .hidden needs to be supported in both the assembler and the linker,
2715 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2716 # This is irritatingly difficult to feature test for; we have to check the
2717 # date string after the version number. If we've got an in-tree
2718 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2720 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2723 conftest_s=' .globl foobar,hidden'
2726 conftest_s=' .hidden foobar
2730 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2731 [elf,2,13,0],, [$conftest_s])
2734 # Darwin as has some visibility support, though with a different syntax.
2735 gcc_cv_as_hidden=yes
2739 # gnu_indirect_function type is an extension proposed at
2740 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2741 # selection of function implementation
2742 AC_ARG_ENABLE(gnu-indirect-function,
2743 [AS_HELP_STRING([--enable-gnu-indirect-function],
2744 [enable the use of the @gnu_indirect_function to glibc systems])],
2745 [case $enable_gnu_indirect_function in
2747 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2748 Valid choices are 'yes' and 'no'.]) ;;
2750 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2752 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2753 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2754 [Define if your system supports gnu indirect functions.])
2758 if test $in_tree_ld != yes ; then
2759 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2760 if echo "$ld_ver" | grep GNU > /dev/null; then
2761 if test x"$ld_is_gold" = xyes; then
2762 # GNU gold --version looks like this:
2764 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2766 # We extract the binutils version which is more familiar and specific
2767 # than the gold version.
2768 ld_vers=`echo $ld_ver | sed -n \
2769 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2771 # GNU ld --version looks like this:
2773 # GNU ld (GNU Binutils) 2.21.51.20110225
2774 ld_vers=`echo $ld_ver | sed -n \
2775 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2777 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2778 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2779 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2780 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2784 # Solaris 2 ld -V output looks like this for a regular version:
2786 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2788 # but test versions add stuff at the end:
2790 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2792 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
2793 # numbers can be used in ld.so.1 feature checks even if a different
2794 # linker is configured.
2795 ld_ver=`$gcc_cv_ld -V 2>&1`
2796 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2797 ld_vers=`echo $ld_ver | sed -n \
2798 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2799 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2800 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2808 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2809 [[if test $in_tree_ld = yes ; then
2811 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2812 && test $in_tree_ld_is_elf = yes; then
2813 gcc_cv_ld_hidden=yes
2816 gcc_cv_ld_hidden=yes
2817 if test x"$ld_is_gold" = xyes; then
2819 elif echo "$ld_ver" | grep GNU > /dev/null; then
2821 mmix-knuth-mmixware)
2822 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2826 if test 0"$ld_date" -lt 20020404; then
2827 if test -n "$ld_date"; then
2828 # If there was date string, but was earlier than 2002-04-04, fail
2830 elif test -z "$ld_vers"; then
2831 # If there was no date string nor ld version number, something is wrong
2834 test -z "$ld_vers_patch" && ld_vers_patch=0
2835 if test "$ld_vers_major" -lt 2; then
2837 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2838 gcc_cv_ld_hidden="no"
2839 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2847 gcc_cv_ld_hidden=yes
2850 # Darwin ld has some visibility support.
2851 gcc_cv_ld_hidden=yes
2853 hppa64*-*-hpux* | ia64*-*-hpux*)
2854 gcc_cv_ld_hidden=yes
2857 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2858 # .symbolic was only added in Solaris 9 12/02.
2859 gcc_cv_ld_hidden=yes
2867 libgcc_visibility=no
2868 AC_SUBST(libgcc_visibility)
2869 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2870 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2871 libgcc_visibility=yes
2872 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2873 [Define if your assembler and linker support .hidden.])
2876 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2877 gcc_cv_ld_ro_rw_mix=unknown
2878 if test $in_tree_ld = yes ; then
2879 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2880 && test $in_tree_ld_is_elf = yes; then
2881 gcc_cv_ld_ro_rw_mix=read-write
2883 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2884 echo '.section myfoosect, "a"' > conftest1.s
2885 echo '.section myfoosect, "aw"' > conftest2.s
2886 echo '.byte 1' >> conftest2.s
2887 echo '.section myfoosect, "a"' > conftest3.s
2888 echo '.byte 0' >> conftest3.s
2889 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2890 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2891 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2892 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2893 conftest2.o conftest3.o > /dev/null 2>&1; then
2894 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2895 | sed -e '/myfoosect/!d' -e N`
2896 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2897 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2898 gcc_cv_ld_ro_rw_mix=read-only
2900 gcc_cv_ld_ro_rw_mix=read-write
2905 rm -f conftest.* conftest[123].*
2908 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2909 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2910 [Define if your linker links a mix of read-only
2911 and read-write sections into a read-write section.])
2913 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2915 gcc_AC_INITFINI_ARRAY
2917 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2918 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2926 [[# GAS versions before 2.11 do not support uleb128,
2927 # despite appearing to.
2928 # ??? There exists an elf-specific test that will crash
2929 # the assembler. Perhaps it's better to figure out whether
2930 # arbitrary sections are supported and try the test.
2931 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2932 if echo "$as_ver" | grep GNU > /dev/null; then
2933 as_vers=`echo $as_ver | sed -n \
2934 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2935 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2936 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2937 if test $as_major -eq 2 && test $as_minor -lt 11
2939 else gcc_cv_as_leb128=yes
2942 [AC_DEFINE(HAVE_AS_LEB128, 1,
2943 [Define if your assembler supports .sleb128 and .uleb128.])],
2944 [AC_DEFINE(HAVE_AS_LEB128, 0,
2945 [Define if your assembler supports .sleb128 and .uleb128.])])
2947 # Determine if an .eh_frame section is read-only.
2948 gcc_fn_eh_frame_ro () {
2949 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
2950 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2951 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
2954 # Check if we have assembler support for unwind directives.
2955 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2962 .cfi_escape 1, 2, 3, 4, 5
2966 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2967 # read-only and read-write sections, we need to make sure that the
2968 # assembler used emits read-write .eh_frame sections.
2969 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
2970 gcc_cv_as_cfi_directive=yes
2971 elif test "x$gcc_cv_objdump" = x; then
2972 # No objdump, err on the side of caution.
2973 gcc_cv_as_cfi_directive=no
2975 if test x$gas = xyes; then
2983 sparc*-*-solaris2.*)
2984 # On Solaris/SPARC, .eh_frame sections should always be read-write.
2985 if gcc_fn_eh_frame_ro $as_32_opt \
2986 || gcc_fn_eh_frame_ro $as_64_opt; then
2987 gcc_cv_as_cfi_directive=no
2989 gcc_cv_as_cfi_directive=yes
2992 i?86-*-solaris2.* | x86_64-*-solaris2.*)
2993 # On Solaris/x86, make sure that GCC and assembler agree on using
2994 # read-only .eh_frame sections for 64-bit.
2995 if gcc_fn_eh_frame_ro $as_32_opt; then
2996 gcc_cv_as_cfi_directive=no
2997 elif gcc_fn_eh_frame_ro $as_64_opt; then
2998 gcc_cv_as_cfi_directive=yes
3000 gcc_cv_as_cfi_directive=no
3007 gcc_cv_as_cfi_directive=yes
3010 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
3011 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
3015 .cfi_adjust_cfa_offset 64
3017 .cfi_adjust_cfa_offset 128
3020 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
3021 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
3022 gcc_cv_as_cfi_advance_working=yes
3026 # no objdump, err on the side of caution
3027 gcc_cv_as_cfi_advance_working=no
3029 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
3030 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
3031 [`if test $gcc_cv_as_cfi_directive = yes \
3032 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
3033 [Define 0/1 if your assembler supports CFI directives.])
3035 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
3036 gcc_GAS_CHECK_FEATURE([cfi personality directive],
3037 gcc_cv_as_cfi_personality_directive, ,,
3040 .cfi_personality 0, symbol
3042 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
3043 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
3044 [Define 0/1 if your assembler supports .cfi_personality.])
3046 gcc_GAS_CHECK_FEATURE([cfi sections directive],
3047 gcc_cv_as_cfi_sections_directive, ,,
3049 .cfi_sections .debug_frame, .eh_frame
3053 win32 | pe | cygwin* | mingw32*)
3054 # Need to check that we generated the correct relocation for the
3055 # .debug_frame section. This was fixed for binutils 2.21.
3056 gcc_cv_as_cfi_sections_directive=no
3057 if test "x$gcc_cv_objdump" != x; then
3058 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
3059 grep secrel > /dev/null; then
3060 gcc_cv_as_cfi_sections_directive=yes
3065 gcc_cv_as_cfi_sections_directive=yes
3068 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
3069 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
3070 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
3071 [Define 0/1 if your assembler supports .cfi_sections.])
3073 # GAS versions up to and including 2.11.0 may mis-optimize
3075 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
3083 .section .eh_frame,"aw",@progbits
3085 .4byte .LECIE1-.LSCIE1
3099 .4byte .LEFDE1-.LASFDE1
3101 .4byte .LASFDE1-__FRAME_BEGIN__
3109 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
3110 cat > conftest.lit <<EOF
3111 0000 10000000 00000000 017a0001 781a0004 .........z..x...
3112 0010 01000000 12000000 18000000 00000000 ................
3113 0020 08000000 04080000 0044 .........D @&t@
3115 cat > conftest.big <<EOF
3116 0000 00000010 00000000 017a0001 781a0004 .........z..x...
3117 0010 00000001 00000012 00000018 00000000 ................
3118 0020 00000008 04000000 0844 .........D @&t@
3120 # If the assembler didn't choke, and we can objdump,
3121 # and we got the correct data, then succeed.
3122 # The text in the here-document typically retains its unix-style line
3123 # endings, while the output of objdump will use host line endings.
3124 # Therefore, use diff -b for the comparisons.
3125 if test x$gcc_cv_objdump != x \
3126 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3127 | tail -3 > conftest.got \
3128 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3129 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3131 gcc_cv_as_eh_frame=yes
3132 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3133 gcc_cv_as_eh_frame=buggy
3135 # Uh oh, what do we do now?
3136 gcc_cv_as_eh_frame=no
3139 if test $gcc_cv_as_eh_frame = buggy; then
3140 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3141 [Define if your assembler mis-optimizes .eh_frame data.])
3144 # Test if the assembler supports the section flag 'e' or #exclude for
3145 # specifying an excluded section.
3146 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3147 [2,22,51], [--fatal-warnings],
3150 if test $gcc_cv_as_section_exclude_e = no; then
3152 # Solaris as uses #exclude instead.
3156 conftest_s='.section "foo1", #exclude'
3158 i?86-*-solaris2* | x86_64-*-solaris2*)
3159 conftest_s='.section foo1, #exclude'
3164 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,,
3168 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3169 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3170 [Define if your assembler supports specifying the exclude section flag.])
3172 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3173 [elf,2,12,0], [--fatal-warnings],
3174 [.section .rodata.str, "aMS", @progbits, 1])
3175 if test $gcc_cv_as_shf_merge = no; then
3176 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3177 [elf,2,12,0], [--fatal-warnings],
3178 [.section .rodata.str, "aMS", %progbits, 1])
3180 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3181 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3182 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3184 gcc_cv_ld_aligned_shf_merge=yes
3186 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for
3188 sparc*-*-solaris2.11*)
3189 if test x"$gnu_ld" = xno \
3190 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then
3191 gcc_cv_ld_aligned_shf_merge=no
3195 AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE,
3196 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`],
3197 [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.])
3199 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
3200 [.stabs "gcc2_compiled.",60,0,0,0],,
3201 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
3202 [Define if your assembler supports .stabs.])])
3204 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3205 gcc_cv_as_comdat_group,
3206 [elf,2,16,0], [--fatal-warnings],
3207 [.section .text,"axG",@progbits,.foo,comdat])
3208 if test $gcc_cv_as_comdat_group = yes; then
3209 gcc_cv_as_comdat_group_percent=no
3210 gcc_cv_as_comdat_group_group=no
3212 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3213 gcc_cv_as_comdat_group_percent,
3214 [elf,2,16,0], [--fatal-warnings],
3215 [.section .text,"axG",%progbits,.foo,comdat])
3216 if test $gcc_cv_as_comdat_group_percent = yes; then
3217 gcc_cv_as_comdat_group_group=no
3220 # Sun as uses a completely different syntax.
3225 .group foo,".text%foo",#comdat
3226 .section ".text%foo", #alloc,#execinstr,#progbits
3231 i?86-*-solaris2* | x86_64-*-solaris2*)
3233 .group foo,.text%foo,#comdat
3234 .section .text%foo, "ax", @progbits
3240 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3241 gcc_cv_as_comdat_group_group,
3245 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3246 gcc_cv_as_comdat_group_group=no
3250 if test x"$ld_is_gold" = xyes; then
3252 elif test $in_tree_ld = yes ; then
3254 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3255 && test $in_tree_ld_is_elf = yes; then
3258 elif echo "$ld_ver" | grep GNU > /dev/null; then
3260 if test 0"$ld_date" -lt 20050308; then
3261 if test -n "$ld_date"; then
3262 # If there was date string, but was earlier than 2005-03-08, fail
3264 elif test "$ld_vers_major" -lt 2; then
3266 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3273 *-*-solaris2.1[1-9]*)
3275 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3276 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3279 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3280 # least ld version 1.2267.
3281 if test "$ld_vers_major" -gt 1; then
3283 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3285 elif test "$ld_vers_minor" -ge 2267; then
3290 # Assume linkers other than GNU ld don't support COMDAT group.
3296 # Allow overriding the automatic COMDAT group tests above.
3297 AC_ARG_ENABLE(comdat,
3298 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3299 [comdat_group="$enable_comdat"])
3300 if test $comdat_group = no; then
3301 gcc_cv_as_comdat_group=no
3302 gcc_cv_as_comdat_group_percent=no
3303 gcc_cv_as_comdat_group_group=no
3305 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3306 [`if test $gcc_cv_as_comdat_group = yes \
3307 || test $gcc_cv_as_comdat_group_percent = yes \
3308 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3309 [Define 0/1 if your assembler and linker support COMDAT groups.])
3311 # Restrict this test to Solaris/x86: other targets define this statically.
3313 i?86-*-solaris2* | x86_64-*-solaris2*)
3314 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3315 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3319 # Full support for hidden thunks in linkonce sections only appeared in
3320 # Solaris 11/OpenSolaris.
3321 *-*-solaris2.1[[1-9]]*)
3329 AC_MSG_RESULT($hidden_linkonce)
3330 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3331 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3332 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3336 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3341 .loc 1 1 0 is_stmt 1],,
3342 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3343 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3345 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3346 gcc_cv_as_discriminator,
3350 .loc 1 1 0 discriminator 1],,
3351 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3352 [Define if your assembler supports the .loc discriminator sub-directive.])])
3354 # Thread-local storage - the check is heavily parameterized.
3363 .section ".tdata","awT",@progbits
3366 ldq $27,__tls_get_addr($29) !literal!1
3367 lda $16,foo($29) !tlsgd!1
3368 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3369 ldq $27,__tls_get_addr($29) !literal!2
3370 lda $16,foo($29) !tlsldm!2
3371 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3372 ldq $1,foo($29) !gotdtprel
3373 ldah $2,foo($29) !dtprelhi
3374 lda $3,foo($2) !dtprello
3375 lda $4,foo($29) !dtprel
3376 ldq $1,foo($29) !gottprel
3377 ldah $2,foo($29) !tprelhi
3378 lda $3,foo($2) !tprello
3379 lda $4,foo($29) !tprel'
3382 tls_as_opt=--fatal-warnings
3386 add_s r0,r0, @foo@tpoff'
3390 cris-*-*|crisv32-*-*)
3392 .section ".tdata","awT",@progbits
3399 tls_as_opt=--fatal-warnings
3403 .section ".tdata","awT",@progbits
3415 .section ".tdata","awT",@progbits
3419 addil LT%foo-$tls_gdidx$,gp
3420 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3423 addil LT%foo-$tls_ldidx$,gp
3425 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3426 addil LR%foo-$tls_dtpoff$,%ret0
3427 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3429 addil LT%foo-$tls_ieoff$,gp
3430 ldw RT%foo-$tls_ieoff$(%r1),%t2
3433 addil LR%foo-$tls_leoff$,%t1
3434 ldo RR%foo-$tls_leoff$(%r1),%t2'
3437 tls_as_opt=--fatal-warnings
3441 .section ".tdata","awT",%progbits
3452 i[34567]86-*-* | x86_64-*-*)
3454 i[34567]86-*-solaris2.* | x86_64-*-solaris2.*)
3461 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3463 .section .tdata,"awt",@progbits'
3468 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3469 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3473 .section ".tdata","awT",@progbits'
3477 tls_as_opt="--fatal-warnings"
3481 conftest_s="$conftest_s
3485 leal foo@tlsgd(,%ebx,1), %eax
3486 leal foo@tlsldm(%ebx), %eax
3487 leal foo@dtpoff(%eax), %edx
3488 movl foo@gottpoff(%ebx), %eax
3489 subl foo@gottpoff(%ebx), %eax
3490 addl foo@gotntpoff(%ebx), %eax
3491 movl foo@indntpoff, %eax
3492 movl \$foo@tpoff, %eax
3493 subl \$foo@tpoff, %eax
3494 leal foo@ntpoff(%ecx), %eax"
3497 if test x$on_solaris = xyes; then
3499 yes) tls_as_opt="$tls_as_opt --64" ;;
3500 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3503 conftest_s="$conftest_s
3507 leaq foo@tlsgd(%rip), %rdi
3508 leaq foo@tlsld(%rip), %rdi
3509 leaq foo@dtpoff(%rax), %rdx
3510 movq foo@gottpoff(%rip), %rax
3511 movq \$foo@tpoff, %rax"
3517 .section ".tdata","awT",@progbits
3520 addl r16 = @ltoff(@dtpmod(foo#)), gp
3521 addl r17 = @ltoff(@dtprel(foo#)), gp
3522 addl r18 = @ltoff(@tprel(foo#)), gp
3523 addl r19 = @dtprel(foo#), gp
3524 adds r21 = @dtprel(foo#), r13
3525 movl r23 = @dtprel(foo#)
3526 addl r20 = @tprel(foo#), gp
3527 adds r22 = @tprel(foo#), r13
3528 movl r24 = @tprel(foo#)'
3531 tls_as_opt=--fatal-warnings
3535 .section .tdata,"awT",@progbits
3539 addik r5,r20,x@TLSGD
3540 addik r5,r20,x@TLSLDM'
3543 tls_as_opt='--fatal-warnings'
3547 .section .tdata,"awT",@progbits
3551 addiu $4, $28, %tlsgd(x)
3552 addiu $4, $28, %tlsldm(x)
3553 lui $4, %dtprel_hi(x)
3554 addiu $4, $4, %dtprel_lo(x)
3555 lw $4, %gottprel(x)($28)
3556 lui $4, %tprel_hi(x)
3557 addiu $4, $4, %tprel_lo(x)'
3560 tls_as_opt='-32 --fatal-warnings'
3564 .section .tdata,"awT",@progbits
3569 move.l x@TLSGD(%a5),%a0
3570 move.l x@TLSLDM(%a5),%a0
3571 move.l x@TLSLDO(%a5),%a0
3572 move.l x@TLSIE(%a5),%a0
3573 move.l x@TLSLE(%a5),%a0'
3576 tls_as_opt='--fatal-warnings'
3580 .section ".tdata","awT",@progbits'
3583 tls_as_opt="--fatal-warnings"
3587 .section ".tdata","awT",%progbits
3591 add x0, x0, #:tlsgd_lo12:x
3596 tls_as_opt='--fatal-warnings'
3600 .section ".tdata","awT",@progbits
3603 l.movhi r3, tpoffha(foo)
3605 l.lwz r4, tpofflo(foo)(r3)'
3608 tls_as_opt=--fatal-warnings
3612 .extern __get_tpointer
3630 .section ".tdata","awT",@progbits
3638 addi 3,2,ld0@got@tlsgd
3644 addi 3,2,x1@got@tlsld
3650 addis 9,3,x2@dtprel@ha
3651 addi 9,9,x2@dtprel@l
3654 ld 9,x3@got@dtprel(2)
3660 tls_as_opt="-a64 --fatal-warnings"
3664 .section ".tdata","awT",@progbits
3672 addi 3,31,ld0@got@tlsgd
3674 addi 3,31,x1@got@tlsld
3677 addis 9,3,x2@dtprel@ha
3678 addi 9,9,x2@dtprel@l
3679 lwz 9,x3@got@tprel(31)
3682 addis 9,2,x2@tprel@ha
3683 addi 9,9,x2@tprel@l'
3686 tls_as_opt="-a32 --fatal-warnings"
3690 .section .tdata,"awT",@progbits
3694 call __tls_get_addr'
3697 tls_as_opt='--fatal-warnings'
3701 .section ".tdata","awT",@progbits
3710 l %r1,foo@GOTNTPOFF(%r12)
3711 l %r1,0(%r1):tls_load:foo
3712 bas %r14,0(%r1,%r13):tls_gdcall:foo
3713 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3716 tls_as_opt="-m31 --fatal-warnings"
3720 .section ".tdata","awT",@progbits
3728 lg %r1,foo@GOTNTPOFF(%r12)
3729 larl %r1,foo@INDNTPOFF
3730 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3731 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3734 tls_as_opt="-m64 -Aesame --fatal-warnings"
3736 sh-*-* | sh[123456789lbe]*-*-*)
3738 .section ".tdata","awT",@progbits
3748 tls_as_opt=--fatal-warnings
3752 sparc*-sun-solaris2.*)
3759 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3761 .section ".tdata",#alloc,#write,#tls'
3766 .section ".tdata","awT",@progbits'
3769 tls_as_opt="-32 --fatal-warnings"
3771 conftest_s="$conftest_s
3774 sethi %tgd_hi22(foo), %o0
3775 add %o0, %tgd_lo10(foo), %o1
3776 add %l7, %o1, %o0, %tgd_add(foo)
3777 call __tls_get_addr, %tgd_call(foo)
3778 sethi %tldm_hi22(foo), %l1
3779 add %l1, %tldm_lo10(foo), %l2
3780 add %l7, %l2, %o0, %tldm_add(foo)
3781 call __tls_get_addr, %tldm_call(foo)
3782 sethi %tldo_hix22(foo), %l3
3783 xor %l3, %tldo_lox10(foo), %l4
3784 add %o0, %l4, %l5, %tldo_add(foo)
3785 sethi %tie_hi22(foo), %o3
3786 add %o3, %tie_lo10(foo), %o3
3787 ld [%l7 + %o3], %o2, %tie_ld(foo)
3788 add %g7, %o2, %o4, %tie_add(foo)
3789 sethi %tle_hix22(foo), %l1
3790 xor %l1, %tle_lox10(foo), %o5
3791 ld [%g7 + %o5], %o1"
3795 .section ".tdata","awT",@progbits
3798 addli r0, zero, tls_gd(foo)
3799 auli r0, zero, tls_gd_ha16(foo)
3800 addli r0, r0, tls_gd_lo16(foo)
3802 addli r0, zero, tls_ie(foo)
3803 auli r0, r0, tls_ie_ha16(foo)
3804 addli r0, r0, tls_ie_lo16(foo)'
3807 tls_as_opt="--fatal-warnings"
3811 .section ".tdata","awT",@progbits
3814 shl16insli r0, zero, hw0_last_tls_gd(foo)
3815 shl16insli r0, zero, hw1_last_tls_gd(foo)
3816 shl16insli r0, r0, hw0_tls_gd(foo)
3818 shl16insli r0, zero, hw1_last_tls_ie(foo)
3819 shl16insli r0, r0, hw0_tls_ie(foo)'
3822 tls_as_opt="--fatal-warnings"
3826 .section ".tdata","awT",@progbits
3829 movi a8, foo@TLSFUNC
3830 movi a10, foo@TLSARG
3831 callx8.tls a8, foo@TLSCALL'
3838 if test "x$enable_tls" = xno ; then
3839 : # TLS explicitly disabled.
3840 elif test "x$enable_tls" = xyes ; then
3841 set_have_as_tls=yes # TLS explicitly enabled.
3842 elif test -z "$tls_first_major"; then
3843 : # If we don't have a check, assume no support.
3845 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3846 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3847 [set_have_as_tls=yes])
3849 if test $set_have_as_tls = yes ; then
3850 AC_DEFINE(HAVE_AS_TLS, 1,
3851 [Define if your assembler and linker support thread-local storage.])
3854 # Target-specific assembler checks.
3856 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3857 gcc_cv_ld_static_dynamic=no
3858 gcc_cv_ld_static_option='-Bstatic'
3859 gcc_cv_ld_dynamic_option='-Bdynamic'
3860 if test $in_tree_ld = yes ; then
3861 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3862 gcc_cv_ld_static_dynamic=yes
3864 elif test x$gcc_cv_ld != x; then
3865 # Check if linker supports -Bstatic/-Bdynamic option
3866 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
3867 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
3868 gcc_cv_ld_static_dynamic=yes
3871 # AIX ld uses -b flags
3872 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3873 gcc_cv_ld_static_dynamic=yes
3874 gcc_cv_ld_static_option="-bstatic"
3875 gcc_cv_ld_dynamic_option="-bdynamic"
3877 # HP-UX ld uses -a flags to select between shared and archive.
3879 if test x"$gnu_ld" = xno; then
3880 gcc_cv_ld_static_dynamic=yes
3881 gcc_cv_ld_static_option="-aarchive_shared"
3882 gcc_cv_ld_dynamic_option="-adefault"
3885 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3887 gcc_cv_ld_static_dynamic=yes
3892 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3893 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3894 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3895 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3896 [Define to the linker option to disable use of shared objects.])
3897 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3898 [Define to the linker option to enable use of shared objects.])
3900 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3902 AC_MSG_CHECKING(linker --version-script option)
3903 gcc_cv_ld_version_script=no
3904 ld_version_script_option=''
3905 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3906 gcc_cv_ld_version_script=yes
3907 ld_version_script_option='--version-script'
3908 elif test x$gcc_cv_ld != x; then
3910 # Solaris 2 ld always supports -M. It also supports a subset of
3911 # --version-script since Solaris 11.4, but requires
3912 # -z gnu-version-script-compat to activate.
3914 gcc_cv_ld_version_script=yes
3915 ld_version_script_option='-M'
3919 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3920 AC_MSG_RESULT($gcc_cv_ld_version_script)
3921 AC_SUBST(ld_version_script_option)
3923 AC_MSG_CHECKING(linker soname option)
3925 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3926 gcc_cv_ld_soname=yes
3927 ld_soname_option='-soname'
3928 elif test x$gcc_cv_ld != x; then
3931 gcc_cv_ld_soname=yes
3932 ld_soname_option='-install_name'
3934 # Solaris 2 ld always supports -h. It also supports --soname for GNU
3935 # ld compatiblity since some Solaris 10 update.
3937 gcc_cv_ld_soname=yes
3938 ld_soname_option='-h'
3942 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3943 AC_MSG_RESULT($gcc_cv_ld_soname)
3944 AC_SUBST(ld_soname_option)
3946 if test x"$demangler_in_ld" = xyes; then
3947 AC_MSG_CHECKING(linker --demangle support)
3948 gcc_cv_ld_demangle=no
3949 if test $in_tree_ld = yes; then
3950 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3951 gcc_cv_ld_demangle=yes
3953 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3954 # Check if the GNU linker supports --demangle option
3955 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
3956 gcc_cv_ld_demangle=yes
3959 if test x"$gcc_cv_ld_demangle" = xyes; then
3960 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3961 [Define if your linker supports --demangle option.])
3963 AC_MSG_RESULT($gcc_cv_ld_demangle)
3966 AC_MSG_CHECKING(linker plugin support)
3968 if test -f liblto_plugin.la; then
3969 save_ld_ver="$ld_ver"
3970 save_ld_vers_major="$ld_vers_major"
3971 save_ld_vers_minor="$ld_vers_minor"
3972 save_ld_is_gold="$ld_is_gold"
3976 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3978 # FIXME: ld_is_gold?
3979 ld_vers_major="$gcc_cv_gld_major_version"
3980 ld_vers_minor="$gcc_cv_gld_minor_version"
3982 # Determine plugin linker version.
3983 # FIXME: Partial duplicate from above, generalize.
3985 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3986 if echo "$ld_ver" | grep GNU > /dev/null; then
3987 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3989 ld_vers=`echo $ld_ver | sed -n \
3990 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3992 ld_vers=`echo $ld_ver | sed -n \
3993 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3995 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3996 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
4001 # Determine plugin support.
4002 if echo "$ld_ver" | grep GNU > /dev/null; then
4003 # Require GNU ld or gold 2.21+ for plugin support by default.
4004 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
4006 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
4007 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
4012 ld_ver="$save_ld_ver"
4013 ld_vers_major="$save_ld_vers_major"
4014 ld_vers_minor="$save_ld_vers_minor"
4015 ld_is_gold="$save_ld_is_gold"
4017 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
4018 [Define to the level of your linker's plugin support.])
4019 AC_MSG_RESULT($gcc_cv_lto_plugin)
4021 # Target OS-specific assembler checks.
4023 case "$target_os" in
4025 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
4026 gcc_cv_as_mmacosx_version_min,,
4027 [-mmacosx-version-min=10.1], [.text],,
4028 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
4029 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
4033 # Target CPU-specific assembler checks.
4037 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
4038 [-mabi=lp64], [.text],,,)
4039 if test x$gcc_cv_as_aarch64_mabi = xyes; then
4040 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
4041 [Define if your assembler supports the -mabi option.])
4043 if test x$with_abi = xilp32; then
4044 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4045 Upgrade the Assembler.])
4047 if test x"$with_multilib_list" = xdefault; then
4048 TM_MULTILIB_CONFIG=lp64
4050 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
4051 for aarch64_multilib in ${aarch64_multilibs}; do
4052 case ${aarch64_multilib} in
4054 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4055 Upgrade the Assembler.])
4063 # Check if we have binutils support for relocations types needed by -fpic
4064 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
4067 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
4068 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
4069 [Define if your assembler supports relocs needed by -fpic.])])
4070 # Enable Branch Target Identification Mechanism and Return Address
4071 # Signing by default.
4072 AC_ARG_ENABLE(standard-branch-protection,
4074 AS_HELP_STRING([--enable-standard-branch-protection],
4075 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4076 AS_HELP_STRING([--disable-standard-branch-protection],
4077 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4082 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1"
4087 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
4088 Valid choices are 'yes' and 'no'.])
4093 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
4094 AC_ARG_ENABLE(fix-cortex-a53-835769,
4096 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
4097 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4098 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
4099 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4104 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4109 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4110 Valid choices are 'yes' and 'no'.])
4116 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4117 AC_ARG_ENABLE(fix-cortex-a53-843419,
4119 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4120 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4121 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4122 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4127 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4132 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4133 Valid choices are 'yes' and 'no'.])
4141 # All TARGET_ABI_OSF targets.
4142 alpha*-*-linux* | alpha*-*-*bsd*)
4143 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4144 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
4147 extbl $3, $2, $3 !lituse_bytoff!1
4148 ldq $2, a($29) !literal!1
4149 ldq $4, b($29) !literal!2
4150 ldq_u $3, 0($2) !lituse_base!1
4151 ldq $27, f($29) !literal!5
4152 jsr $26, ($27), f !lituse_jsr!5
4153 ldah $29, 0($26) !gpdisp!3
4154 lda $0, c($29) !gprel
4155 ldah $1, d($29) !gprelhigh
4156 lda $1, d($1) !gprellow
4157 lda $29, 0($29) !gpdisp!3],,
4158 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4159 [Define if your assembler supports explicit relocations.])])
4160 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4161 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
4164 ldq $27, a($29) !literal!1
4165 jsr $26, ($27), a !lituse_jsrdirect!1],,
4166 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4167 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4171 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
4172 [--mlink-relax], [.text],,
4173 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4174 [Define if your avr assembler supports --mlink-relax option.])])
4176 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
4178 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4179 [Define if your avr assembler supports -mrmw option.])])
4181 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4182 gcc_cv_as_avr_mgccisr,,
4188 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4189 [Define if your avr assembler supports -mgcc-isr option.])])
4191 # Check how default linker description file implements .rodata for
4192 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4193 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4194 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4195 cat > conftest.s <<EOF
4196 .section .rodata,"a",@progbits
4198 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4203 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4204 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4205 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4206 if test -s conftest.nm
4208 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4210 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4211 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4213 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4214 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4215 cat conftest.nm >&AS_MESSAGE_LOG_FD
4216 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4217 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4220 AC_MSG_RESULT(test failed)
4221 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4222 cat conftest.s >&AS_MESSAGE_LOG_FD
4223 AC_MSG_WARN([[see `config.log' for details]])
4225 rm -f conftest.s conftest.o conftest.elf conftest.nm
4229 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4230 gcc_cv_as_cris_no_mul_bug,[2,15,91],
4231 [-no-mul-bug-abort], [.text],,
4232 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4233 [Define if your assembler supports the -no-mul-bug-abort option.])])
4237 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
4239 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4240 [Define if your assembler supports -relax option.])])
4242 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4243 gcc_cv_as_sparc_gotdata_op,,
4250 sethi %gdop_hix22(foo), %g1
4251 xor %g1, %gdop_lox10(foo), %g1
4252 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4253 [if test x$gcc_cv_ld != x \
4254 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4255 if test x$gcc_cv_objdump != x; then
4256 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4257 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4258 gcc_cv_as_sparc_gotdata_op=no
4260 gcc_cv_as_sparc_gotdata_op=yes
4265 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4266 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4268 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4269 gcc_cv_as_sparc_ua_pcrel,,
4277 .uaword %r_disp32(foo)],
4278 [if test x$gcc_cv_ld != x \
4279 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4280 gcc_cv_as_sparc_ua_pcrel=yes
4283 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4284 [Define if your assembler and linker support unaligned PC relative relocs.])
4286 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4287 gcc_cv_as_sparc_ua_pcrel_hidden,,
4292 .uaword %r_disp32(foo)
4293 .byte 0x32, 0x33, 0x34
4298 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4299 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4300 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4301 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4302 if $gcc_cv_objdump -R conftest 2> /dev/null \
4303 | grep 'DISP32' > /dev/null 2>&1; then
4306 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4310 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4311 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4312 ]) # unaligned pcrel relocs
4314 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4315 gcc_cv_as_sparc_offsetable_lo10,,
4318 or %g1, %lo(ab) + 12, %g1
4319 or %g1, %lo(ab + 12), %g1],
4320 [if test x$gcc_cv_objdump != x \
4321 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4322 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4323 gcc_cv_as_sparc_offsetable_lo10=yes
4325 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4326 [Define if your assembler supports offsetable %lo().])])
4328 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4329 gcc_cv_as_sparc_fmaf,,
4332 .register %g2, #scratch
4333 .register %g3, #scratch
4335 fmaddd %f0, %f2, %f4, %f6
4336 addxccc %g1, %g2, %g3
4337 fsrl32 %f2, %f4, %f8
4338 fnaddd %f10, %f12, %f14],,
4339 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4340 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4342 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4343 gcc_cv_as_sparc_sparc4,,
4346 .register %g2, #scratch
4347 .register %g3, #scratch
4350 1: cwbneg %g2, %g3, 1f
4353 aes_kexpand0 %f4, %f6, %f8
4354 des_round %f38, %f40, %f42, %f44
4355 camellia_f %f54, %f56, %f58, %f60
4356 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4357 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4358 [Define if your assembler supports SPARC4 instructions.])])
4360 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4361 gcc_cv_as_sparc_sparc5,,
4364 .register %g2, #scratch
4365 .register %g3, #scratch
4368 fpadd8 %f0, %f2, %f4],,
4369 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4370 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4372 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4373 gcc_cv_as_sparc_sparc6,,
4376 .register %g2, #scratch
4377 .register %g3, #scratch
4380 fpsll64x %f0, %f2, %f4],,
4381 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4382 [Define if your assembler supports SPARC6 instructions.])])
4384 gcc_GAS_CHECK_FEATURE([LEON instructions],
4385 gcc_cv_as_sparc_leon,,
4388 .register %g2, #scratch
4389 .register %g3, #scratch
4393 casa [[%g2]] 0xb, %g3, %g1],,
4394 [AC_DEFINE(HAVE_AS_LEON, 1,
4395 [Define if your assembler supports LEON instructions.])])
4399 i[34567]86-*-* | x86_64-*-*)
4403 # Full C++ conformance when using a shared libstdc++-v3 requires some
4404 # support from the Cygwin DLL, which in more recent versions exports
4405 # wrappers to aid in interposing and redirecting operators new, delete,
4406 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4407 # are configuring for a version of Cygwin that exports the wrappers.
4408 if test x$host = x$target && test x$host_cpu = xi686; then
4409 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4411 # Can't check presence of libc functions during cross-compile, so
4412 # we just have to assume we're building for an up-to-date target.
4413 gcc_ac_cygwin_dll_wrappers=yes
4415 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4416 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4417 [Define if you want to generate code by default that assumes that the
4418 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4421 cygwin* | pe | mingw32*)
4422 # Recent binutils allows the three-operand form of ".comm" on PE. This
4423 # definition is used unconditionally to initialise the default state of
4424 # the target option variable that governs usage of the feature.
4425 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4426 [2,19,52],,[.comm foo,1,32])
4427 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4428 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4429 [Define if your assembler supports specifying the alignment
4430 of objects allocated using the GAS .comm command.])
4431 # Used for DWARF 2 in PE
4432 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4433 gcc_cv_as_ix86_pe_secrel32,
4439 [if test x$gcc_cv_ld != x \
4440 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4441 gcc_cv_as_ix86_pe_secrel32=yes
4444 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4445 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4446 # Test if the assembler supports the extended form of the .section
4447 # directive that specifies section alignment. LTO support uses this,
4448 # but normally only after installation, so we warn but don't fail the
4449 # configure if LTO is enabled but the assembler does not support it.
4450 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4451 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4452 if test x$gcc_cv_as_section_has_align != xyes; then
4453 case ",$enable_languages," in
4455 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4462 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,,
4463 [-xbrace_comment=no], [.text],,
4464 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4465 [Define if your assembler supports -xbrace_comment option.])])
4467 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4468 gcc_cv_as_ix86_filds,,,
4469 [filds (%ebp); fists (%ebp)],,
4470 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4471 [Define if your assembler uses filds and fists mnemonics.])])
4473 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4474 gcc_cv_as_ix86_fildq,,,
4475 [fildq (%ebp); fistpq (%ebp)],,
4476 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4477 [Define if your assembler uses fildq and fistq mnemonics.])])
4479 gcc_GAS_CHECK_FEATURE([cmov syntax],
4480 gcc_cv_as_ix86_cmov_sun_syntax,,,
4481 [cmovl.l %edx, %eax],,
4482 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4483 [Define if your assembler supports the Sun syntax for cmov.])])
4485 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4486 gcc_cv_as_ix86_ffreep,,,
4488 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4489 [Define if your assembler supports the ffreep mnemonic.])])
4491 gcc_GAS_CHECK_FEATURE([.quad directive],
4492 gcc_cv_as_ix86_quad,,,
4494 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4495 [Define if your assembler supports the .quad directive.])])
4497 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4498 gcc_cv_as_ix86_sahf,,,
4501 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4502 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4504 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4505 gcc_cv_as_ix86_interunit_movq,,,
4509 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4510 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4511 [Define if your assembler supports interunit movq mnemonic.])
4513 gcc_GAS_CHECK_FEATURE([hle prefixes],
4514 gcc_cv_as_ix86_hle,,,
4515 [lock xacquire cmpxchg %esi, (%ecx)],,
4516 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4517 [Define if your assembler supports HLE prefixes.])])
4519 gcc_GAS_CHECK_FEATURE([swap suffix],
4520 gcc_cv_as_ix86_swap,,,
4521 [movl.s %esp, %ebp],,
4522 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4523 [Define if your assembler supports the swap suffix.])])
4525 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4526 gcc_cv_as_ix86_diff_sect_delta,,,
4534 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4535 [Define if your assembler supports the subtraction of symbols in different sections.])])
4537 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4538 gcc_cv_as_ix86_rep_lock_prefix,,,
4544 lock addl %edi, (%eax,%esi)
4545 lock orl $0, (%esp)],,
4546 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4547 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4549 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4550 gcc_cv_as_ix86_ud2,,,
4552 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4553 [Define if your assembler supports the 'ud2' mnemonic.])])
4555 # Enforce 32-bit output with gas and gld.
4556 if test x$gas = xyes; then
4557 as_ix86_gas_32_opt="--32"
4559 if echo "$ld_ver" | grep GNU > /dev/null; then
4560 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4561 ld_ix86_gld_32_opt="-melf_i386_sol2"
4563 ld_ix86_gld_32_opt="-melf_i386"
4567 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4568 gcc_cv_as_ix86_tlsgdplt,,
4569 [$as_ix86_gas_32_opt],
4570 [call tls_gd@tlsgdplt],
4571 [if test x$gcc_cv_ld != x \
4572 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4573 gcc_cv_as_ix86_tlsgdplt=yes
4576 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4577 [Define if your assembler and linker support @tlsgdplt.])])
4580 .section .tdata,"aw'$tls_section_flag'",@progbits
4582 .section .text,"ax",@progbits
4583 call tls_ld@tlsldmplt'
4585 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4586 gcc_cv_as_ix86_tlsldmplt,,
4587 [$as_ix86_gas_32_opt],
4589 [if test x$gcc_cv_ld != x \
4590 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4591 gcc_cv_as_ix86_tlsldmplt=yes
4594 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4595 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4596 [Define to 1 if your assembler and linker support @tlsldmplt.])
4599 .section .text,"ax",@progbits
4601 .type _start, @function
4603 leal value@tlsldm(%ebx), %eax
4604 call ___tls_get_addr@plt
4606 .section .tdata,"aw'$tls_section_flag'",@progbits
4607 .type value, @object
4609 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4610 gcc_cv_as_ix86_tlsldm,,
4611 [$as_ix86_gas_32_opt],
4613 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4614 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4615 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4616 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4617 gcc_cv_as_ix86_tlsldm=yes
4621 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4622 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4623 [Define to 1 if your assembler and linker support @tlsldm.])
4634 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4635 gcc_cv_as_ix86_got32x,,
4636 [$as_ix86_gas_32_opt],
4638 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4639 && test x$gcc_cv_readelf != x \
4640 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4641 | grep R_386_GOT32X > /dev/null 2>&1 \
4642 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4643 if $gcc_cv_objdump -dw conftest 2>&1 \
4644 | grep 0xffffff > /dev/null 2>&1; then
4645 gcc_cv_as_ix86_got32x=no
4647 gcc_cv_as_ix86_got32x=yes
4651 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4652 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4653 [Define 0/1 if your assembler and linker support @GOT.])
4655 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4656 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4657 [$as_ix86_gas_32_opt],
4663 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4664 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4665 [Define true if the assembler supports '.long foo@GOTOFF'.])
4668 .section .text,"ax",@progbits
4670 .type _start, @function
4672 leal ld@tlsldm(%ecx), %eax
4673 call *___tls_get_addr@GOT(%ecx)
4674 leal gd@tlsgd(%ecx), %eax
4675 call *___tls_get_addr@GOT(%ecx)
4677 .section .tdata,"aw'$tls_section_flag'",@progbits
4685 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4686 gcc_cv_as_ix86_tls_get_addr_via_got,,
4687 [$as_ix86_gas_32_opt],
4689 [if test x$gcc_cv_ld != x \
4690 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4691 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4694 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4695 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4696 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4700 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4701 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4703 addl r15 = @ltoffx(x#), gp
4705 ld8.mov r16 = [[r15]], x#
4707 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4708 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4716 gcc_GAS_CHECK_FEATURE([.machine directive support],
4717 gcc_cv_as_machine_directive,,,
4718 [ .machine ppc7400])
4719 if test x$gcc_cv_as_machine_directive != xyes; then
4720 echo "*** This target requires an assembler supporting \".machine\"" >&2
4721 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4722 test x$build = x$target && exit 1
4728 *-*-aix*) conftest_s=' .machine "pwr5"
4731 *-*-darwin*) conftest_s=' .text
4733 *) conftest_s=' .machine power4
4738 gcc_GAS_CHECK_FEATURE([mfcr field support],
4739 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4741 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4742 [Define if your assembler supports mfcr field.])])
4745 *-*-aix*) conftest_s=' .csect .text[[PR]]
4747 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4751 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4752 *) conftest_s=' .text
4754 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4757 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4758 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4760 [AC_DEFINE(HAVE_AS_REL16, 1,
4761 [Define if your assembler supports R_PPC_REL16 relocs.])])
4764 *-*-aix*) conftest_s=' .machine "pwr7"
4767 *) conftest_s=' .machine power7
4772 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4773 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4775 [AC_DEFINE(HAVE_AS_VSX, 1,
4776 [Define if your assembler supports VSX instructions.])])
4778 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4779 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4780 [.gnu_attribute 4,1],,
4781 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4782 [Define if your assembler supports .gnu_attribute.])])
4784 gcc_GAS_CHECK_FEATURE([tls marker support],
4785 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4786 [ bl __tls_get_addr(x@tlsgd)],,
4787 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4788 [Define if your assembler supports arg info for __tls_get_addr.])])
4790 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4791 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4792 [ .reloc .,R_PPC64_ENTRY; nop],,
4793 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4794 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4796 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
4797 gcc_cv_as_powerpc_pltseq_markers, [2,31,0],-a32 --fatal-warnings,
4798 [ .reloc .,R_PPC_PLTSEQ; nop],,
4799 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
4800 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
4804 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4805 gcc_cv_as_aix_ref, [2,21,0],,
4806 [ .csect stuff[[rw]]
4812 [AC_DEFINE(HAVE_AS_REF, 1,
4813 [Define if your assembler supports .ref])])
4815 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4816 gcc_cv_as_aix_dwloc, [2,21,0],,
4821 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4822 [Define if your assembler supports AIX debug frame section label reference.])])
4828 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4829 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4830 [ lw $4,%gp_rel(foo)($4)],,
4831 [if test x$target_cpu_default = x
4832 then target_cpu_default=MASK_EXPLICIT_RELOCS
4833 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4836 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4837 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4838 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4839 [Define if the assembler understands -mno-shared.])])
4841 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4842 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4843 [.gnu_attribute 4,1],,
4844 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4845 [Define if your assembler supports .gnu_attribute.])])
4847 gcc_GAS_CHECK_FEATURE([.module support],
4848 gcc_cv_as_mips_dot_module,,[-32],
4851 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4852 [Define if your assembler supports .module.])])
4853 if test x$gcc_cv_as_mips_dot_module = xno \
4854 && test x$with_fp_32 != x; then
4856 [Requesting --with-fp-32= requires assembler support for .module.])
4859 gcc_GAS_CHECK_FEATURE([.micromips support],
4860 gcc_cv_as_micromips_support,,[--fatal-warnings],
4862 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4863 [Define if your assembler supports the .set micromips directive])])
4865 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4866 gcc_cv_as_mips_dtprelword, [2,18,0],,
4867 [.section .tdata,"awT",@progbits
4871 .dtprelword x+0x8000],,
4872 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4873 [Define if your assembler supports .dtprelword.])])
4875 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4876 gcc_cv_as_mips_dspr1_mult,,,
4886 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4887 [Define if your assembler supports DSPR1 mult.])])
4889 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4890 gcc_cv_as_ld_jalr_reloc=no
4891 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4892 if test $in_tree_ld = yes ; then
4893 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4894 && test $in_tree_ld_is_elf = yes; then
4895 gcc_cv_as_ld_jalr_reloc=yes
4897 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4898 echo ' .ent x' > conftest.s
4899 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4900 echo ' lw $25,%call16(y)($28)' >> conftest.s
4901 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4902 echo '1: jalr $25' >> conftest.s
4903 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4904 echo '1: jalr $25' >> conftest.s
4905 echo ' .end x' >> conftest.s
4906 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4907 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4908 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4909 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4910 gcc_cv_as_ld_jalr_reloc=yes
4916 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4917 if test x$target_cpu_default = x; then
4918 target_cpu_default=MASK_RELAX_PIC_CALLS
4920 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4923 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4925 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4926 [gcc_cv_ld_mips_personality_relaxation],
4927 [gcc_cv_ld_mips_personality_relaxation=no
4928 if test $in_tree_ld = yes ; then
4929 if test "$gcc_cv_gld_major_version" -eq 2 \
4930 -a "$gcc_cv_gld_minor_version" -ge 21 \
4931 -o "$gcc_cv_gld_major_version" -gt 2; then
4932 gcc_cv_ld_mips_personality_relaxation=yes
4934 elif test x$gcc_cv_as != x \
4935 -a x$gcc_cv_ld != x \
4936 -a x$gcc_cv_readelf != x ; then
4937 cat > conftest.s <<EOF
4939 .cfi_personality 0x80,indirect_ptr
4946 .section .data,"aw",@progbits
4950 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4951 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4952 if $gcc_cv_readelf -d conftest 2>&1 \
4953 | grep TEXTREL > /dev/null 2>&1; then
4955 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4956 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4959 gcc_cv_ld_mips_personality_relaxation=yes
4963 rm -f conftest.s conftest.o conftest])
4964 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4965 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4966 [Define if your linker can relax absolute .eh_frame personality
4967 pointers into PC-relative form.])
4970 gcc_GAS_CHECK_FEATURE([-mnan= support],
4971 gcc_cv_as_mips_nan,,
4973 [AC_DEFINE(HAVE_AS_NAN, 1,
4974 [Define if the assembler understands -mnan=.])])
4975 if test x$gcc_cv_as_mips_nan = xno \
4976 && test x$with_nan != x; then
4978 [Requesting --with-nan= requires assembler support for -mnan=])
4982 # Earlier GAS versions generically support .gnu_attribute, but the
4983 # msp430 assembler will not do anything with it.
4984 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4985 gcc_cv_as_msp430_gnu_attribute, [2,33,50],,
4986 [.gnu_attribute 4,1],,
4987 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4988 [Define if your assembler supports .gnu_attribute.])])
4989 gcc_GAS_CHECK_FEATURE([.mspabi_attribute support],
4990 gcc_cv_as_msp430_mspabi_attribute, [2,33,50],,
4991 [.mspabi_attribute 4,1],,
4992 [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1,
4993 [Define if your assembler supports .mspabi_attribute.])])
4996 gcc_GAS_CHECK_FEATURE([.attribute support],
4997 gcc_cv_as_riscv_attribute, [2,32,0],,
4998 [.attribute stack_align,4],,
4999 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1,
5000 [Define if your assembler supports .attribute.])])
5003 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5004 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
5005 [.gnu_attribute 8,1],,
5006 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5007 [Define if your assembler supports .gnu_attribute.])])
5008 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
5009 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
5014 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
5015 [Define if your assembler supports .machine and .machinemode.])])
5016 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
5017 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
5018 [ .machine z13+vx ],,
5019 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
5020 [Define if your assembler supports architecture modifiers.])])
5021 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
5022 gcc_cv_as_s390_vector_loadstore_alignment_hints, [2,31,0],,
5023 [ vl %v24,0(%r15),3 ],,
5024 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
5025 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
5030 # Mips and HP-UX need the GNU assembler.
5031 # Linux on IA64 might be able to use the Intel assembler.
5034 mips*-*-* | *-*-hpux* )
5035 if test x$gas_flag = xyes \
5036 || test x"$host" != x"$build" \
5037 || test ! -x "$gcc_cv_as" \
5038 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
5041 echo "*** This configuration requires the GNU assembler" >&2
5047 # ??? Not all targets support dwarf2 debug_line, even within a version
5048 # of gas. Moreover, we need to emit a valid instruction to trigger any
5049 # info to the output file. So, as supported targets are added to gas 2.11,
5050 # add some instruction here to (also) show we expect this might work.
5051 # ??? Once 2.11 is released, probably need to add first known working
5052 # version to the per-target configury.
5054 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \
5055 | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \
5056 | tilegx | tilepro | visium | xstormy16 | xtensa)
5066 if test x"$insn" != x; then
5068 .file 1 \"conftest.s\"
5071 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
5072 gcc_cv_as_dwarf2_debug_line,
5073 [elf,2,11,0],, [$conftest_s],
5074 [if test x$gcc_cv_objdump != x \
5075 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
5076 | grep debug_line > /dev/null 2>&1; then
5077 gcc_cv_as_dwarf2_debug_line=yes
5078 elif test x$gcc_cv_otool != x \
5079 && $gcc_cv_otool -l conftest.o 2> /dev/null \
5080 | grep debug_line > /dev/null 2>&1; then
5081 gcc_cv_as_dwarf2_debug_line=yes
5084 # The .debug_line file table must be in the exact order that
5085 # we specified the files, since these indices are also used
5086 # by DW_AT_decl_file. Approximate this test by testing if
5087 # the assembler bitches if the same index is assigned twice.
5088 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
5089 gcc_cv_as_dwarf2_file_buggy,,,
5093 if test $gcc_cv_as_dwarf2_debug_line = yes \
5094 && test $gcc_cv_as_dwarf2_file_buggy = no; then
5095 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
5096 [Define if your assembler supports dwarf2 .file/.loc directives,
5097 and preserves file table indices exactly as given.])
5099 if test $gcc_cv_as_leb128 = yes; then
5101 .file 1 \"conftest.s\"
5102 .loc 1 3 0 view .LVU1
5108 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
5109 gcc_cv_as_dwarf2_debug_view,
5110 [elf,2,27,0],,[$conftest_s],,
5111 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
5112 [Define if your assembler supports views in dwarf2 .loc directives.])])
5116 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
5117 gcc_cv_as_gdwarf2_flag,
5118 [elf,2,11,0], [--gdwarf2], [$insn],,
5119 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5120 [Define if your assembler supports the --gdwarf2 option.])])
5122 gcc_GAS_CHECK_FEATURE([--gstabs option],
5123 gcc_cv_as_gstabs_flag,
5124 [elf,2,11,0], [--gstabs], [$insn],,
5125 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
5126 [Define if your assembler supports the --gstabs option.])])
5128 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5129 gcc_cv_as_debug_prefix_map_flag,
5130 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
5131 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5132 [Define if your assembler supports the --debug-prefix-map option.])])
5135 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5136 gcc_cv_as_compress_debug,,,,
5137 [# gas compiled without zlib cannot compress debug sections and warns
5138 # about it, but still exits successfully. So check for this, too.
5139 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5141 gcc_cv_as_compress_debug=0
5142 # Since binutils 2.26, gas supports --compress-debug-sections=type,
5143 # defaulting to the ELF gABI format.
5144 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
5146 gcc_cv_as_compress_debug=2
5147 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5148 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5149 # Before binutils 2.26, gas only supported --compress-debug-options and
5150 # emitted the traditional GNU format.
5151 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
5153 gcc_cv_as_compress_debug=1
5154 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5155 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5157 gcc_cv_as_compress_debug=0
5159 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5160 [Define to the level of your assembler's compressed debug section support.])
5161 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5162 [Define to the assembler option to enable compressed debug sections.])
5163 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5164 [Define to the assembler option to disable compressed debug sections.])
5166 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
5169 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5170 [Define if your assembler supports .lcomm with an alignment field.])])
5172 if test x$with_sysroot = x && test x$host = x$target \
5173 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5174 && test "$prefix" != "NONE"; then
5175 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5176 [Define to PREFIX/include if cpp should also search that directory.])
5179 # Determine the version of glibc, if any, used on the target.
5180 AC_MSG_CHECKING([for target glibc version])
5181 AC_ARG_WITH([glibc-version],
5182 [AS_HELP_STRING([--with-glibc-version=M.N],
5183 [assume GCC used with glibc version M.N or later])], [
5184 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5185 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5186 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5188 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5190 glibc_version_major=0
5191 glibc_version_minor=0
5192 [if test -f $target_header_dir/features.h \
5193 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5194 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5195 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5196 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5198 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5199 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5200 [GNU C Library major version number used on the target, or 0.])
5201 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5202 [GNU C Library minor version number used on the target, or 0.])
5204 AC_ARG_ENABLE(gnu-unique-object,
5205 [AS_HELP_STRING([--enable-gnu-unique-object],
5206 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5207 [case $enable_gnu_unique_object in
5209 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5210 Valid choices are 'yes' and 'no'.]) ;;
5212 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
5214 [.type foo, '$target_type_format_char'gnu_unique_object],,
5215 # We need to unquote above to to use the definition from config.gcc.
5216 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5217 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5219 if test x$enable_gnu_unique_object = xyes; then
5220 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5221 [Define if your assembler supports @gnu_unique_object.])
5224 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5225 [gcc_cv_as_line_zero],
5226 [gcc_cv_as_line_zero=no
5227 if test $in_tree_gas = yes; then
5228 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
5229 elif test "x$gcc_cv_as" != x; then
5230 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5231 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5232 test "x`cat conftest.out`" = x
5234 gcc_cv_as_line_zero=yes
5236 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5237 cat conftest.s >&AS_MESSAGE_LOG_FD
5238 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5239 cat conftest.out >&AS_MESSAGE_LOG_FD
5241 rm -f conftest.o conftest.s conftest.out
5243 if test "x$gcc_cv_as_line_zero" = xyes; then
5244 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5245 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5248 AC_MSG_CHECKING(support for thin archives)
5249 thin_archive_support=no
5250 echo 'int main (void) { return 0; }' > conftest.c
5251 if ($AR --version | sed 1q | grep "GNU ar" \
5252 && $CC $CFLAGS -c conftest.c \
5253 && $AR rcT conftest.a conftest.o \
5254 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5255 thin_archive_support=yes
5257 rm -f conftest.c conftest.o conftest.a conftest
5258 AC_MSG_RESULT($thin_archive_support)
5259 AC_SUBST(thin_archive_support)
5261 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5262 gcc_cv_ld_eh_frame_hdr=no
5263 if test $in_tree_ld = yes ; then
5264 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5265 && test $in_tree_ld_is_elf = yes; then
5266 gcc_cv_ld_eh_frame_hdr=yes
5268 elif test x$gcc_cv_ld != x; then
5269 if echo "$ld_ver" | grep GNU > /dev/null; then
5270 # Check if linker supports --eh-frame-hdr option
5271 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5272 gcc_cv_ld_eh_frame_hdr=yes
5277 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5278 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5279 gcc_cv_ld_eh_frame_hdr=yes
5285 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5286 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5287 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5288 [Define if your linker supports .eh_frame_hdr.])
5290 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5292 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5293 gcc_cv_ld_eh_frame_ciev3=no
5294 if test $in_tree_ld = yes ; then
5295 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5296 && test $in_tree_ld_is_elf = yes; then
5297 gcc_cv_ld_eh_frame_ciev3=yes
5299 elif test x$gcc_cv_ld != x; then
5300 if echo "$ld_ver" | grep GNU > /dev/null; then
5301 gcc_cv_ld_eh_frame_ciev3=yes
5302 if test 0"$ld_date" -lt 20040513; then
5303 if test -n "$ld_date"; then
5304 # If there was date string, but was earlier than 2004-05-13, fail
5305 gcc_cv_ld_eh_frame_ciev3=no
5306 elif test "$ld_vers_major" -lt 2; then
5307 gcc_cv_ld_eh_frame_ciev3=no
5308 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5309 gcc_cv_ld_eh_frame_ciev3=no
5315 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5316 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5317 gcc_cv_ld_eh_frame_ciev3=yes
5323 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5324 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5325 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5326 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5328 AC_MSG_CHECKING(linker position independent executable support)
5330 if test $in_tree_ld = yes ; then
5332 # Full PIE support on Solaris was only introduced in gld 2.26.
5333 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5334 *) gcc_gld_pie_min_version=15 ;;
5336 if test "$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 \
5337 && test $in_tree_ld_is_elf = yes; then
5340 elif test x$gcc_cv_ld != x; then
5341 # Check if linker supports -pie option
5342 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5346 if echo "$ld_ver" | grep GNU > /dev/null \
5347 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5354 *-*-solaris2.1[[1-9]]*)
5355 # Solaris 11.3 added PIE support.
5356 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5363 if test x"$gcc_cv_ld_pie" = xyes; then
5364 AC_DEFINE(HAVE_LD_PIE, 1,
5365 [Define if your linker supports PIE option.])
5367 AC_MSG_RESULT($gcc_cv_ld_pie)
5369 AC_MSG_CHECKING(linker PIE support with copy reloc)
5370 gcc_cv_ld_pie_copyreloc=no
5371 if test $gcc_cv_ld_pie = yes ; then
5372 if test $in_tree_ld = yes ; then
5373 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5374 gcc_cv_ld_pie_copyreloc=yes
5376 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5377 # Check if linker supports -pie option with copy reloc
5379 i?86-*-linux* | x86_64-*-linux*)
5380 cat > conftest1.s <<EOF
5383 .type a_glob, @object
5388 cat > conftest2.s <<EOF
5391 .type main, @function
5393 movl %eax, a_glob(%rip)
5396 .section .data.rel,"aw",@progbits
5401 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5402 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5403 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5404 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5405 gcc_cv_ld_pie_copyreloc=yes
5407 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5412 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5413 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5414 [Define 0/1 if your linker supports -pie option with copy reloc.])
5415 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5417 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5418 gcc_cv_ld_eh_gc_sections=no
5419 if test $in_tree_ld = yes ; then
5420 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5421 && test $in_tree_ld_is_elf = yes; then
5422 gcc_cv_ld_eh_gc_sections=yes
5424 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5425 cat > conftest.s <<EOF
5428 .type _start, @function
5431 .size _start, .-_start
5432 .section .text.foo,"ax",@progbits
5433 .type foo, @function
5437 .section .gcc_except_table.foo,"a",@progbits
5440 .section .eh_frame,"a",@progbits
5443 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5444 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5445 | grep "gc-sections option ignored" > /dev/null; then
5446 gcc_cv_ld_eh_gc_sections=no
5447 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5448 | grep gcc_except_table > /dev/null; then
5449 gcc_cv_ld_eh_gc_sections=yes
5450 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5451 if test x$gcc_cv_as_comdat_group != xyes; then
5452 gcc_cv_ld_eh_gc_sections=no
5453 cat > conftest.s <<EOF
5456 .type _start, @function
5459 .size _start, .-_start
5460 .section .gnu.linkonce.t.foo,"ax",@progbits
5461 .type foo, @function
5465 .section .gcc_except_table.foo,"a",@progbits
5468 .section .eh_frame,"a",@progbits
5471 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5472 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5473 | grep "gc-sections option ignored" > /dev/null; then
5474 gcc_cv_ld_eh_gc_sections=no
5475 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5476 | grep gcc_except_table > /dev/null; then
5477 gcc_cv_ld_eh_gc_sections=yes
5483 rm -f conftest.s conftest.o conftest
5487 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5488 gcc_cv_ld_eh_gc_sections=no
5491 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5492 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5493 [Define if your linker supports garbage collection of
5494 sections in presence of EH frames.])
5496 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5498 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5499 gcc_cv_ld_eh_gc_sections_bug=no
5500 if test $in_tree_ld = yes ; then
5501 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5502 && test $in_tree_ld_is_elf = yes; then
5503 gcc_cv_ld_eh_gc_sections_bug=yes
5505 elif test x$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
5506 gcc_cv_ld_eh_gc_sections_bug=yes
5507 cat > conftest.s <<EOF
5510 .type _start, @function
5513 .size _start, .-_start
5514 .section .text.startup.foo,"ax",@progbits
5515 .type foo, @function
5519 .section .gcc_except_table.foo,"a",@progbits
5522 .section .eh_frame,"a",@progbits
5525 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5526 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5527 | grep "gc-sections option ignored" > /dev/null; then
5529 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5530 | grep gcc_except_table > /dev/null; then
5531 gcc_cv_ld_eh_gc_sections_bug=no
5534 rm -f conftest.s conftest.o conftest
5536 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5537 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5538 [Define if your linker has buggy garbage collection of
5539 sections support when .text.startup.foo like sections are used.])
5541 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5543 AC_MSG_CHECKING(linker for compressed debug sections)
5544 # gold/gld support compressed debug sections since binutils 2.19/2.21
5545 # In binutils 2.26, gld gained support for the ELF gABI format.
5546 if test $in_tree_ld = yes ; then
5547 gcc_cv_ld_compress_debug=0
5548 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5549 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5550 gcc_cv_ld_compress_debug=2
5551 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5552 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5553 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5554 gcc_cv_ld_compress_debug=3
5555 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5556 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5557 && test $in_tree_ld_is_elf = yes; then
5558 gcc_cv_ld_compress_debug=1
5560 elif echo "$ld_ver" | grep GNU > /dev/null; then
5561 if test "$ld_vers_major" -lt 2 \
5562 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5563 gcc_cv_ld_compress_debug=0
5564 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5565 gcc_cv_ld_compress_debug=1
5567 gcc_cv_ld_compress_debug=3
5568 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5570 if test $ld_is_gold = yes; then
5571 gcc_cv_ld_compress_debug=2
5572 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5578 # Introduced in Solaris 11.2.
5579 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5580 gcc_cv_ld_compress_debug=3
5581 gcc_cv_ld_compress_debug_option="-z compress-sections"
5583 gcc_cv_ld_compress_debug=0
5587 # Assume linkers other than GNU ld don't support compessed debug
5589 gcc_cv_ld_compress_debug=0
5594 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5595 [Define to the level of your linker's compressed debug section support.])
5596 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5597 [Define to the linker option to enable compressed debug sections.])
5598 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5600 if test x"$ld64_flag" = x"yes"; then
5602 # Set defaults for possibly untestable items.
5603 gcc_cv_ld64_export_dynamic=0
5605 if test "$build" = "$host"; then
5611 # On Darwin, because of FAT library support, it is often possible to execute
5612 # exes from compatible archs even when the host differs from the build system.
5613 case "$build","$host" in
5614 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
5619 # If the configurer specified a minimum ld64 version to be supported, then use
5620 # that to determine feature support.
5621 if test x"${gcc_cv_ld64_version}" != x; then
5622 AC_MSG_CHECKING(ld64 specified version)
5623 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
5624 AC_MSG_RESULT($gcc_cv_ld64_major)
5625 if test "$gcc_cv_ld64_major" -ge 236; then
5626 gcc_cv_ld64_export_dynamic=1
5628 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
5629 # If the version was not specified, try to find it.
5630 AC_MSG_CHECKING(linker version)
5631 if test x"${gcc_cv_ld64_version}" = x; then
5632 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
5634 AC_MSG_RESULT($gcc_cv_ld64_version)
5636 AC_MSG_CHECKING(linker for -export_dynamic support)
5637 gcc_cv_ld64_export_dynamic=1
5638 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
5639 gcc_cv_ld64_export_dynamic=0
5641 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
5644 if test x"${gcc_cv_ld64_version}" != x; then
5645 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
5646 [Define to ld64 version.])
5649 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
5650 [Define to 1 if ld64 supports '-export_dynamic'.])
5657 AC_CACHE_CHECK(linker --as-needed support,
5658 gcc_cv_ld_as_needed,
5659 [gcc_cv_ld_as_needed=no
5660 gcc_cv_ld_as_needed_option='--as-needed'
5661 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5662 if test $in_tree_ld = yes ; then
5663 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5664 && test $in_tree_ld_is_elf = yes; then
5665 gcc_cv_ld_as_needed=yes
5666 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
5667 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5668 gcc_cv_ld_no_as_needed_option='--pop-state'
5671 elif test x$gcc_cv_ld != x; then
5672 # Check if linker supports --as-needed and --no-as-needed options
5673 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
5674 gcc_cv_ld_as_needed=yes
5675 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
5676 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
5677 && echo "$ld_ver" | grep GNU > /dev/null \
5678 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
5679 # Use these options only when both ld.bfd and ld.gold support
5680 # --push-state/--pop-state, which unfortunately wasn't added
5682 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5683 gcc_cv_ld_no_as_needed_option='--pop-state'
5686 case "$target:$gnu_ld" in
5688 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
5690 gcc_cv_ld_as_needed=yes
5691 gcc_cv_ld_as_needed_option="-z ignore"
5692 gcc_cv_ld_no_as_needed_option="-z record"
5696 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5697 # dl_iterate_phdr, i.e. since Solaris 11.
5699 *-*-solaris2.1[[1-9]]*)
5701 i?86-*-* | x86_64-*-*)
5702 if echo "$ld_ver" | grep GNU > /dev/null; then
5703 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5704 gcc_cv_ld_as_needed=no
5710 gcc_cv_ld_as_needed=no
5714 if test x"$gcc_cv_ld_as_needed" = xyes; then
5715 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5716 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5717 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5718 [Define to the linker option to ignore unused dependencies.])
5719 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5720 [Define to the linker option to keep unused dependencies.])
5723 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5724 saved_LDFLAGS="$LDFLAGS"
5725 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5726 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5727 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
5728 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5730 LDFLAGS="$saved_LDFLAGS"
5731 if test "x$gcc_cv_ld_clearcap" = xyes; then
5732 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5733 [Define if the linker supports clearing hardware capabilities via mapfile.])
5734 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5736 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5742 emul_name="-melf32lppc"
5745 emul_name="-melf32ppc"
5748 AC_CACHE_CHECK(linker .gnu.attributes long double support,
5750 [gcc_cv_ld_ppc_attr=no
5751 if test x"$ld_is_gold" = xyes; then
5752 gcc_cv_ld_ppc_attr=yes
5753 elif test $in_tree_ld = yes ; then
5754 if test "$gcc_cv_gld_major_version" -eq 2 \
5755 -a "$gcc_cv_gld_minor_version" -ge 28 \
5756 -o "$gcc_cv_gld_major_version" -gt 2; then
5757 gcc_cv_ld_ppc_attr=yes
5759 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5760 # check that merging the long double .gnu_attribute doesn't warn
5761 cat > conftest1.s <<EOF
5764 cat > conftest2.s <<EOF
5767 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5768 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5769 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
5770 && test ! -s conftest.err; then
5771 gcc_cv_ld_ppc_attr=yes
5773 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
5776 if test x$gcc_cv_ld_ppc_attr = xyes; then
5777 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
5778 [Define if your PowerPC linker has .gnu.attributes long double support.])
5783 case "$target:$tm_file" in
5784 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5787 emul_name="-melf64lppc"
5790 emul_name="-melf64ppc"
5793 emul_name="-melf64ppc_fbsd"
5796 AC_CACHE_CHECK(linker support for omitting dot symbols,
5797 gcc_cv_ld_no_dot_syms,
5798 [gcc_cv_ld_no_dot_syms=no
5799 if test x"$ld_is_gold" = xyes; then
5800 gcc_cv_ld_no_dot_syms=yes
5801 elif test $in_tree_ld = yes ; then
5802 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5803 gcc_cv_ld_no_dot_syms=yes
5805 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5806 cat > conftest1.s <<EOF
5810 cat > conftest2.s <<EOF
5811 .section ".opd","aw"
5816 .quad .LEfoo,.TOC.@tocbase,0
5822 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5823 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5824 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5825 gcc_cv_ld_no_dot_syms=yes
5827 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5830 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5831 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5832 [Define if your PowerPC64 linker only needs function descriptor syms.])
5835 AC_CACHE_CHECK(linker large toc support,
5836 gcc_cv_ld_large_toc,
5837 [gcc_cv_ld_large_toc=no
5838 if test x"$ld_is_gold" = xyes; then
5839 gcc_cv_ld_large_toc=yes
5840 elif test $in_tree_ld = yes ; then
5841 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5842 gcc_cv_ld_large_toc=yes
5844 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5845 cat > conftest.s <<EOF
5846 .section ".tbss","awT",@nobits
5852 addis 9,13,ie0@got@tprel@ha
5853 ld 9,ie0@got@tprel@l(9)
5855 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5856 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5857 gcc_cv_ld_large_toc=yes
5859 rm -f conftest conftest.o conftest.s
5862 if test x"$gcc_cv_ld_large_toc" = xyes; then
5863 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5864 [Define if your PowerPC64 linker supports a large TOC.])
5867 AC_CACHE_CHECK(linker toc pointer alignment,
5868 gcc_cv_ld_toc_align,
5869 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5870 cat > conftest.s <<EOF
5875 .section .data.rel.ro,"aw",@progbits
5880 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5881 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5882 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5884 rm -f conftest conftest.o conftest.s
5887 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5888 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5889 [Define to .TOC. alignment forced by your linker.])
5896 AC_CACHE_CHECK(linker large toc support,
5897 gcc_cv_ld_large_toc,
5898 [gcc_cv_ld_large_toc=no
5899 if test x$gcc_cv_as != x ; then
5900 cat > conftest.s <<EOF
5910 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5911 gcc_cv_ld_large_toc=yes
5913 rm -f conftest conftest.o conftest.s
5916 if test x"$gcc_cv_ld_large_toc" = xyes; then
5917 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5918 [Define if your PowerPC64 linker supports a large TOC.])
5923 AC_CACHE_CHECK(linker --build-id support,
5925 [gcc_cv_ld_buildid=no
5926 if test $in_tree_ld = yes ; then
5927 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5928 "$gcc_cv_gld_minor_version" -ge 18 -o \
5929 "$gcc_cv_gld_major_version" -gt 2 \
5930 && test $in_tree_ld_is_elf = yes; then
5931 gcc_cv_ld_buildid=yes
5933 elif test x$gcc_cv_ld != x; then
5934 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
5935 gcc_cv_ld_buildid=yes
5938 if test x"$gcc_cv_ld_buildid" = xyes; then
5939 AC_DEFINE(HAVE_LD_BUILDID, 1,
5940 [Define if your linker supports --build-id.])
5943 AC_ARG_ENABLE(linker-build-id,
5944 [AS_HELP_STRING([--enable-linker-build-id],
5945 [compiler will always pass --build-id to linker])],
5947 enable_linker_build_id=no)
5949 if test x"$enable_linker_build_id" = xyes; then
5950 if test x"$gcc_cv_ld_buildid" = xyes; then
5951 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5952 [Define if gcc should always pass --build-id to linker.])
5954 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5958 # In binutils 2.21, GNU ld gained support for new emulations fully
5959 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5960 AC_CACHE_CHECK(linker *_sol2 emulation support,
5961 gcc_cv_ld_sol2_emulation,
5962 [gcc_cv_ld_sol2_emulation=no
5963 if test $in_tree_ld = yes ; then
5964 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5965 "$gcc_cv_gld_minor_version" -ge 21 -o \
5966 "$gcc_cv_gld_major_version" -gt 2 \
5967 && test $in_tree_ld_is_elf = yes; then
5968 gcc_cv_ld_sol2_emulation=yes
5970 elif test x$gcc_cv_ld != x; then
5971 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5972 grep _sol2 > /dev/null; then
5973 gcc_cv_ld_sol2_emulation=yes
5976 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5977 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5978 [Define if your linker supports the *_sol2 emulations.])
5981 AC_CACHE_CHECK(linker --sysroot support,
5983 [gcc_cv_ld_sysroot=no
5984 if test $in_tree_ld = yes ; then
5985 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5986 gcc_cv_ld_sysroot=yes
5988 elif test x$gcc_cv_ld != x; then
5989 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
5990 gcc_cv_ld_sysroot=yes
5993 if test x"$gcc_cv_ld_sysroot" = xyes; then
5994 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5995 [Define if your linker supports --sysroot.])
6000 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
6001 AC_CACHE_CHECK([system-provided CRTs on Solaris],
6002 gcc_cv_solaris_crts,
6003 [gcc_cv_solaris_crts=no
6004 if test x$host != x$target; then
6005 if test "x$with_sysroot" = xyes; then
6006 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
6008 target_sysroot="${with_sysroot}"
6011 target_libdir="$target_sysroot/usr/lib"
6012 # At the time they were added, gcrt1.o became a symlink for backwards
6013 # compatibility on x86, while crt1.o was added on sparc, so check for that.
6015 i?86-*-solaris2* | x86_64-*-solaris2*)
6016 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
6019 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
6024 if test x$gcc_cv_solaris_crts = xyes; then
6025 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
6026 [Define if the system-provided CRTs are present on Solaris.])
6029 AC_ARG_ENABLE(libssp,
6030 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
6031 [case "${enableval}" in
6035 AC_MSG_ERROR([unknown libssp setting $enableval])
6039 # Test for stack protector support in target C library.
6040 AC_CACHE_CHECK(__stack_chk_fail in target C library,
6041 gcc_cv_libc_provides_ssp,
6042 [gcc_cv_libc_provides_ssp=no
6043 if test "x$enable_libssp" = "xno"; then
6044 gcc_cv_libc_provides_ssp=yes
6045 elif test "x$enable_libssp" = "xyes"; then
6046 gcc_cv_libc_provides_ssp=no
6050 # All versions of musl provide stack protector
6051 gcc_cv_libc_provides_ssp=yes;;
6052 *-*-linux* | *-*-kfreebsd*-gnu)
6053 # glibc 2.4 and later provides __stack_chk_fail and
6054 # either __stack_chk_guard, or TLS access to stack guard canary.
6055 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
6056 [if test -f $target_header_dir/features.h \
6057 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
6058 $target_header_dir/features.h > /dev/null; then
6059 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
6060 $target_header_dir/features.h > /dev/null && \
6061 test -f $target_header_dir/bits/uClibc_config.h && \
6062 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
6063 $target_header_dir/bits/uClibc_config.h > /dev/null; then
6064 gcc_cv_libc_provides_ssp=yes
6066 # all versions of Bionic support stack protector
6067 elif test -f $target_header_dir/sys/cdefs.h \
6068 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
6069 $target_header_dir/sys/cdefs.h > /dev/null; then
6070 gcc_cv_libc_provides_ssp=yes
6074 # Avoid complicated tests (see
6075 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
6076 # simply assert that glibc does provide this, which is true for all
6077 # realistically usable GNU/Hurd configurations.
6078 # All supported versions of musl provide it as well
6079 gcc_cv_libc_provides_ssp=yes;;
6080 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
6081 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
6082 [echo "no __stack_chk_fail on this target"])
6084 *) gcc_cv_libc_provides_ssp=no ;;
6088 if test x$gcc_cv_libc_provides_ssp = xyes; then
6089 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
6090 [Define if your target C library provides stack protector support])
6093 # Check whether --enable-default-ssp was given.
6094 AC_ARG_ENABLE(default-ssp,
6095 [AS_HELP_STRING([--enable-default-ssp],
6096 [enable Stack Smashing Protection as default])],[
6097 if test x$gcc_cv_libc_provides_ssp = xyes; then
6099 ia64*-*-*) enable_default_ssp=no ;;
6100 *) enable_default_ssp=$enableval ;;
6103 enable_default_ssp=no
6105 enable_default_ssp=no)
6106 if test x$enable_default_ssp = xyes ; then
6107 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
6108 [Define if your target supports default stack protector and it is enabled.])
6110 AC_SUBST([enable_default_ssp])
6112 # Test for <sys/sdt.h> on the target.
6113 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
6114 AC_MSG_CHECKING(sys/sdt.h in the target C library)
6116 if test -f $target_header_dir/sys/sdt.h; then
6118 AC_DEFINE(HAVE_SYS_SDT_H, 1,
6119 [Define if your target C library provides sys/sdt.h])
6121 AC_MSG_RESULT($have_sys_sdt_h)
6123 # Check if TFmode long double should be used by default or not.
6124 # Some glibc targets used DFmode long double, but with glibc 2.4
6125 # and later they can use TFmode.
6127 powerpc*-*-linux* | \
6131 AC_ARG_WITH(long-double-128,
6132 [AS_HELP_STRING([--with-long-double-128],
6133 [use 128-bit long double by default])],
6134 gcc_cv_target_ldbl128="$with_long_double_128",
6135 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6136 [gcc_cv_target_ldbl128=no
6137 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6138 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6139 && gcc_cv_target_ldbl128=yes
6143 if test x$gcc_cv_target_ldbl128 = xyes; then
6144 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6145 [Define if TFmode long double should be the default])
6148 # Check if TFmode long double target should use the IBM extended double or IEEE
6149 # 128-bit floating point formats if long doubles are 128-bits long. The long
6150 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6151 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6153 AC_ARG_WITH([long-double-format],
6154 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6155 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6156 case "$target:$with_long_double_format" in
6157 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6160 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6161 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6163 power7 | power8 | power9 | power1*)
6167 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6168 supported if the default cpu is power7 or newer])
6169 with_long_double_format=""
6173 xpowerpc64*-*-linux*:*)
6174 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6175 with_long_double_format=""
6178 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6179 on 64-bit PowerPC VSX Linux systems])
6180 with_long_double_format=""
6185 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6186 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6187 gcc_cv_libc_provides_hwcap_in_tcb=no
6190 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6193 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6194 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6195 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6198 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6199 gcc_cv_target_dl_iterate_phdr=unknown
6202 # <link.h> needs both a dl_iterate_phdr declaration and support for
6203 # compilation with largefile support.
6204 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6205 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6206 gcc_cv_target_dl_iterate_phdr=yes
6208 gcc_cv_target_dl_iterate_phdr=no
6211 *-*-dragonfly* | *-*-freebsd*)
6212 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6213 gcc_cv_target_dl_iterate_phdr=yes
6215 gcc_cv_target_dl_iterate_phdr=no
6219 gcc_cv_target_dl_iterate_phdr=yes
6222 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
6223 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
6224 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
6225 [Define if your target C library provides the `dl_iterate_phdr' function.])
6227 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
6229 # We no longer support different GC mechanisms. Emit an error if
6230 # the user configures with --with-gc.
6232 [AS_HELP_STRING([--with-gc={page,zone}],
6233 [this option is not supported anymore. It used to choose
6234 the garbage collection mechanism to use with the compiler])],
6235 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
6238 # Libraries to use on the host. This will normally be set by the top
6239 # level Makefile. Here we simply capture the value for our Makefile.
6240 if test -z "${HOST_LIBS+set}"; then
6245 # Use the system's zlib library.
6248 dnl Very limited version of automake's enable-maintainer-mode
6250 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
6251 dnl maintainer-mode is disabled by default
6252 AC_ARG_ENABLE(maintainer-mode,
6253 [AS_HELP_STRING([--enable-maintainer-mode],
6254 [enable make rules and dependencies not useful
6255 (and sometimes confusing) to the casual installer])],
6256 maintainer_mode=$enableval,
6259 AC_MSG_RESULT($maintainer_mode)
6261 if test "$maintainer_mode" = "yes"; then
6268 dnl Whether to prevent multiple front-ends from linking at the same time
6270 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
6271 AC_ARG_ENABLE(link-mutex,
6272 [AS_HELP_STRING([--enable-link-mutex],
6273 [avoid linking multiple front-ends at once to avoid thrashing
6274 on the build machine])],
6275 do_link_mutex=$enableval,
6277 AC_MSG_RESULT($do_link_mutex)
6279 if test "$do_link_mutex" = "yes"; then
6284 AC_SUBST(DO_LINK_MUTEX)
6290 # Make empty files to contain the specs and options for each language.
6291 # Then add #include lines to for a compiler that has specs and/or options.
6297 # These (without "all_") are set in each config-lang.in.
6298 # `language' must be a single word so is spelled singularly.
6301 all_outputs='Makefile'
6302 # List of language makefile fragments.
6304 # Additional files for gengtype
6305 all_gtfiles="$target_gtfiles"
6307 # These are the languages that are set in --enable-languages,
6308 # and are available in the GCC tree.
6309 all_selected_languages=
6311 # Add the language fragments.
6312 # Languages are added via two mechanisms. Some information must be
6313 # recorded in makefile variables, these are defined in config-lang.in.
6314 # We accumulate them and plug them into the main Makefile.
6315 # The other mechanism is a set of hooks for each of the main targets
6316 # like `clean', `install', etc.
6318 language_hooks="Make-hooks"
6320 for lang in ${srcdir}/*/config-lang.in
6323 test "$lang" = "${srcdir}/*/config-lang.in" && continue
6325 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
6326 if test "x$lang_alias" = x
6328 echo "$lang doesn't set \$language." 1>&2
6331 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
6332 subdirs="$subdirs $subdir"
6334 # $gcc_subdir is where the gcc integration files are to be found
6335 # for a language, both for internal compiler purposes (compiler
6336 # sources implementing front-end to GCC tree converters), and for
6337 # build infrastructure purposes (Make-lang.in, etc.)
6339 # This will be <subdir> (relative to $srcdir) if a line like
6340 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
6341 # is found in <langdir>/config-lang.in, and will remain <langdir>
6344 # Except for the language alias (fetched above), the regular
6345 # "config-lang.in" contents are always retrieved from $gcc_subdir,
6346 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
6347 # only this and the language alias.
6349 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
6350 if [ "$gcc_subdir" = "" ]; then
6351 gcc_subdir="$subdir"
6354 case ",$enable_languages," in
6356 all_selected_languages="$all_selected_languages $lang_alias"
6357 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
6358 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
6370 . ${srcdir}/$gcc_subdir/config-lang.in
6371 if test "x$language" = x
6373 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
6378 case ",$enable_languages," in
6381 for i in $subdir_requires; do
6382 test -f "${srcdir}/$i/config-lang.in" && continue
6390 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
6391 if test -f $srcdir/$gcc_subdir/lang.opt; then
6392 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
6393 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
6395 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
6396 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
6398 all_languages="$all_languages $language"
6399 all_compilers="$all_compilers $compilers"
6400 all_outputs="$all_outputs $outputs"
6401 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
6402 case ",$enable_languages," in
6404 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
6406 AC_SUBST(enable_lto)
6413 for language in $all_selected_languages
6415 check_languages="$check_languages check-$language"
6419 for language in $all_selected_languages
6421 selftest_languages="$selftest_languages selftest-$language"
6424 # We link each language in with a set of hooks, reached indirectly via
6425 # lang.${target}. Only do so for selected languages.
6429 target_list="all.cross start.encap rest.encap tags \
6430 install-common install-man install-info install-pdf install-html dvi \
6431 pdf html uninstall info man srcextra srcman srcinfo \
6432 mostlyclean clean distclean maintainer-clean install-plugin"
6434 for t in $target_list
6437 for lang in $all_selected_languages
6441 echo "lang.$t: $x" >> Make-hooks
6445 # Option include files
6448 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
6449 option_includes="option-includes.mk"
6450 AC_SUBST_FILE(option_includes)
6458 echo "dir ." > .gdbinit
6459 echo "dir ${srcdir}" >> .gdbinit
6460 if test x$gdb_needs_out_file_path = xyes
6462 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
6464 if test "x$subdirs" != x; then
6467 echo "dir ${srcdir}/$s" >> .gdbinit
6470 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
6471 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
6473 # Put a breakpoint on __asan_report_error to help with debugging buffer
6476 *-fsanitize=address*)
6477 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
6481 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
6482 AC_SUBST(gcc_tooldir)
6485 # Find a directory in which to install a shared libgcc.
6487 AC_ARG_ENABLE(version-specific-runtime-libs,
6488 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
6489 [specify that runtime libraries should be
6490 installed in a compiler-specific directory])])
6492 # Substitute configuration variables
6495 AC_SUBST(all_compilers)
6496 AC_SUBST(all_gtfiles)
6497 AC_SUBST(all_lang_makefrags)
6498 AC_SUBST(all_languages)
6499 AC_SUBST(all_selected_languages)
6500 AC_SUBST(build_exeext)
6501 AC_SUBST(build_install_headers_dir)
6502 AC_SUBST(build_xm_file_list)
6503 AC_SUBST(build_xm_include_list)
6504 AC_SUBST(build_xm_defines)
6505 AC_SUBST(build_file_translate)
6506 AC_SUBST(check_languages)
6507 AC_SUBST(selftest_languages)
6508 AC_SUBST(cpp_install_dir)
6509 AC_SUBST(xmake_file)
6510 AC_SUBST(tmake_file)
6511 AC_SUBST(TM_ENDIAN_CONFIG)
6512 AC_SUBST(TM_MULTILIB_CONFIG)
6513 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
6514 AC_SUBST(extra_gcc_objs)
6515 AC_SUBST(user_headers_inc_next_pre)
6516 AC_SUBST(user_headers_inc_next_post)
6517 AC_SUBST(extra_headers_list)
6518 AC_SUBST(extra_objs)
6519 AC_SUBST(extra_programs)
6520 AC_SUBST(float_h_file)
6521 AC_SUBST(gcc_config_arguments)
6522 AC_SUBST(gcc_gxx_include_dir)
6523 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
6524 AC_SUBST(host_exeext)
6525 AC_SUBST(host_xm_file_list)
6526 AC_SUBST(host_xm_include_list)
6527 AC_SUBST(host_xm_defines)
6528 AC_SUBST(out_host_hook_obj)
6530 AC_SUBST(lang_opt_files)
6531 AC_SUBST(lang_specs_files)
6532 AC_SUBST(lang_tree_files)
6533 AC_SUBST(local_prefix)
6535 AC_SUBST(objc_boehm_gc)
6537 AC_SUBST(out_object_file)
6538 AC_SUBST(common_out_file)
6539 AC_SUBST(common_out_object_file)
6540 AC_SUBST(tm_file_list)
6541 AC_SUBST(tm_include_list)
6542 AC_SUBST(tm_defines)
6543 AC_SUBST(tm_p_file_list)
6544 AC_SUBST(tm_p_include_list)
6545 AC_SUBST(tm_d_file_list)
6546 AC_SUBST(tm_d_include_list)
6547 AC_SUBST(xm_file_list)
6548 AC_SUBST(xm_include_list)
6549 AC_SUBST(xm_defines)
6550 AC_SUBST(use_gcc_stdint)
6551 AC_SUBST(c_target_objs)
6552 AC_SUBST(cxx_target_objs)
6553 AC_SUBST(fortran_target_objs)
6554 AC_SUBST(d_target_objs)
6555 AC_SUBST(target_cpu_default)
6557 AC_SUBST_FILE(language_hooks)
6560 if test x${build} = x${host} ; then
6561 if test x${host} = x${target} ; then
6562 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6564 echo "Links are now set up to build a cross-compiler" 1>&2
6565 echo " from ${host} to ${target}." 1>&2
6568 if test x${host} = x${target} ; then
6569 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6570 echo " for ${target}." 1>&2
6572 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6573 echo " from ${host} to ${target}." 1>&2
6577 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6578 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6580 AC_ARG_VAR(ISLLIBS,[How to link isl])
6581 AC_ARG_VAR(ISLINC,[How to find isl include files])
6582 if test "x${ISLLIBS}" != "x" ; then
6583 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6587 AC_SUBST(pluginlibs)
6588 AC_SUBST(enable_plugin)
6589 if test x"$enable_plugin" = x"yes"; then
6590 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6594 # Enable --enable-host-shared
6595 AC_ARG_ENABLE(host-shared,
6596 [AS_HELP_STRING([--enable-host-shared],
6597 [build host code as shared libraries])],
6598 [PICFLAG=-fPIC], [PICFLAG=])
6599 AC_SUBST(enable_host_shared)
6603 AC_ARG_ENABLE(libquadmath-support,
6604 [AS_HELP_STRING([--disable-libquadmath-support],
6605 [disable libquadmath support for Fortran])],
6606 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6607 ENABLE_LIBQUADMATH_SUPPORT=yes)
6608 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6609 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6610 [Define to 1 to enable libquadmath support])
6614 # Specify what hash style to use by default.
6615 AC_ARG_WITH([linker-hash-style],
6616 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6617 [specify the linker hash style])],
6618 [case x"$withval" in
6620 LINKER_HASH_STYLE=sysv
6623 LINKER_HASH_STYLE=gnu
6626 LINKER_HASH_STYLE=both
6629 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6632 [LINKER_HASH_STYLE=''])
6633 if test x"${LINKER_HASH_STYLE}" != x; then
6634 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6635 [The linker hash style])
6638 # Specify what should be the default of -fdiagnostics-color option.
6639 AC_ARG_WITH([diagnostics-color],
6640 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6641 [specify the default of -fdiagnostics-color option
6642 auto-if-env stands for -fdiagnostics-color=auto if
6643 GCC_COLOR environment variable is present and
6644 -fdiagnostics-color=never otherwise])],
6645 [case x"$withval" in
6647 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6650 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6653 DIAGNOSTICS_COLOR_DEFAULT=-1
6656 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6659 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6662 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6663 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6664 [The default for -fdiagnostics-color option])
6666 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6667 # of jit/jit-playback.c.
6668 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
6669 echo "gcc_driver_version: ${gcc_driver_version}"
6670 cat > gcc-driver-name.h <<EOF
6671 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
6674 # Check whether --enable-default-pie was given.
6675 AC_ARG_ENABLE(default-pie,
6676 [AS_HELP_STRING([--enable-default-pie],
6677 [enable Position Independent Executable as default])],
6678 enable_default_pie=$enableval,
6679 enable_default_pie=no)
6680 if test x$enable_default_pie = xyes ; then
6681 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6682 [Define if your target supports default PIE and it is enabled.])
6684 AC_SUBST([enable_default_pie])
6686 # Check if -fno-PIE works.
6687 AC_CACHE_CHECK([for -fno-PIE option],
6689 [saved_CXXFLAGS="$CXXFLAGS"
6690 CXXFLAGS="$CXXFLAGS -fno-PIE"
6691 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6692 [gcc_cv_c_no_fpie=yes],
6693 [gcc_cv_c_no_fpie=no])
6694 CXXFLAGS="$saved_CXXFLAGS"])
6695 if test "$gcc_cv_c_no_fpie" = "yes"; then
6696 NO_PIE_CFLAGS="-fno-PIE"
6698 AC_SUBST([NO_PIE_CFLAGS])
6700 # Check if -no-pie works.
6701 AC_CACHE_CHECK([for -no-pie option],
6703 [saved_LDFLAGS="$LDFLAGS"
6704 LDFLAGS="$LDFLAGS -no-pie"
6705 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6706 [gcc_cv_no_pie=yes],
6708 LDFLAGS="$saved_LDFLAGS"])
6709 if test "$gcc_cv_no_pie" = "yes"; then
6710 NO_PIE_FLAG="-no-pie"
6712 AC_SUBST([NO_PIE_FLAG])
6714 # Check linker supports '-z bndplt'
6715 ld_bndplt_support=no
6716 AC_MSG_CHECKING(linker -z bndplt option)
6717 if test x"$ld_is_gold" = xno; then
6718 if test $in_tree_ld = yes ; then
6719 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6720 ld_bndplt_support=yes
6722 elif test x$gcc_cv_ld != x; then
6723 # Check if linker supports -a bndplt option
6724 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
6725 ld_bndplt_support=yes
6729 if test x"$ld_bndplt_support" = xyes; then
6730 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6731 [Define if your linker supports -z bndplt])
6733 AC_MSG_RESULT($ld_bndplt_support)
6735 # Check linker supports '--push-state'/'--pop-state'
6736 ld_pushpopstate_support=no
6737 AC_MSG_CHECKING(linker --push-state/--pop-state options)
6738 if test x"$ld_is_gold" = xno; then
6739 if test $in_tree_ld = yes ; then
6740 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6741 ld_pushpopstate_support=yes
6743 elif test x$gcc_cv_ld != x; then
6744 # Check if linker supports --push-state/--pop-state options
6745 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
6746 ld_pushpopstate_support=yes
6750 if test x"$ld_pushpopstate_support" = xyes; then
6751 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
6752 [Define if your linker supports --push-state/--pop-state])
6754 AC_MSG_RESULT($ld_pushpopstate_support)
6756 # Configure the subdirectories
6757 # AC_CONFIG_SUBDIRS($subdirs)
6759 # Create the Makefile
6760 # and configure language subdirectories
6761 AC_CONFIG_FILES($all_outputs)
6763 AC_CONFIG_COMMANDS([default],
6765 case ${CONFIG_HEADERS} in
6766 *auto-host.h:config.in*)
6769 # Make sure all the subdirs exist.
6770 for d in $subdirs doc build common c-family
6772 test -d $d || mkdir $d
6775 [subdirs='$subdirs'])