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 $wf_opt])), [loose_warn])
487 ACX_PROG_CC_WARNING_OPTS(
488 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
490 ACX_PROG_CXX_WARNING_OPTS(
491 m4_quote(m4_do([-Wmissing-format-attribute ],
492 [-Woverloaded-virtual])), [strict_warn])
493 ACX_PROG_CC_WARNING_OPTS(
494 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
495 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
496 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
497 [-Wno-overlength-strings])), [strict_warn])
498 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
500 # The above macros do nothing if the compiler is not GCC. However, the
501 # Makefile has more goo to add other flags, so these variables are used
502 # to enable warnings only for GCC.
505 if test "x$GCC" = "xyes"; then
506 warn_cflags='$(GCC_WARN_CFLAGS)'
507 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
509 AC_SUBST(warn_cflags)
510 AC_SUBST(warn_cxxflags)
512 # Disable exceptions and RTTI if building with g++
513 ACX_PROG_CC_WARNING_OPTS(
514 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
517 # Enable expensive internal checks
519 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
523 AC_ARG_ENABLE(checking,
524 [AS_HELP_STRING([[--enable-checking[=LIST]]],
525 [enable expensive run-time checks. With LIST,
526 enable only specific categories of checks.
527 Categories are: yes,no,all,none,release.
528 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc,
529 rtlflag,rtl,runtime,tree,valgrind,types])],
530 [ac_checking_flags="${enableval}"],[
531 # Determine the default checks.
532 if test x$is_release = x ; then
533 ac_checking_flags=yes,extra
535 ac_checking_flags=release
537 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
538 for check in release $ac_checking_flags
541 # these set all the flags to specific states
542 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
543 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ;
544 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
545 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
546 ac_tree_checking=1 ; ac_valgrind_checking= ;
547 ac_types_checking=1 ;;
548 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
549 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
550 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
551 ac_rtlflag_checking= ; ac_runtime_checking= ;
552 ac_tree_checking= ; ac_valgrind_checking= ;
553 ac_types_checking= ;;
554 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
555 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ;
556 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
557 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
558 ac_tree_checking=1 ; ac_valgrind_checking= ;
559 ac_types_checking=1 ;;
560 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
561 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
562 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
563 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
564 ac_tree_checking= ; ac_valgrind_checking= ;
565 ac_types_checking= ;;
566 # these enable particular checks
567 assert) ac_assert_checking=1 ;;
568 df) ac_df_checking=1 ;;
569 extra) ac_extra_checking=1 ;;
570 fold) ac_fold_checking=1 ;;
571 gc) ac_gc_checking=1 ;;
572 gcac) ac_gc_always_collect=1 ;;
573 gimple) ac_gimple_checking=1 ;;
574 misc) ac_checking=1 ;;
575 rtl) ac_rtl_checking=1 ;;
576 rtlflag) ac_rtlflag_checking=1 ;;
577 runtime) ac_runtime_checking=1 ;;
578 tree) ac_tree_checking=1 ;;
579 types) ac_types_checking=1 ;;
580 valgrind) ac_valgrind_checking=1 ;;
581 *) AC_MSG_ERROR(unknown check category $check) ;;
587 if test x$ac_checking != x ; then
588 AC_DEFINE(CHECKING_P, 1,
589 [Define to 0/1 if you want more run-time sanity checks. This one gets a grab
590 bag of miscellaneous but relatively cheap checks.])
591 nocommon_flag=-fno-common
593 AC_DEFINE(CHECKING_P, 0)
595 AC_SUBST(nocommon_flag)
596 if test x$ac_extra_checking != x ; then
597 AC_DEFINE(ENABLE_EXTRA_CHECKING, 1,
598 [Define to 0/1 if you want extra run-time checking that might affect code
601 AC_DEFINE(ENABLE_EXTRA_CHECKING, 0)
603 if test x$ac_df_checking != x ; then
604 AC_DEFINE(ENABLE_DF_CHECKING, 1,
605 [Define if you want more run-time sanity checks for dataflow.])
607 if test x$ac_assert_checking != x ; then
608 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
609 [Define if you want assertions enabled. This is a cheap check.])
611 if test x$ac_gimple_checking != x ; then
612 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
613 [Define if you want operations on GIMPLE (the basic data structure of
614 the high-level optimizers) to be checked for dynamic type safety at
615 runtime. This is moderately expensive.])
617 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
618 if test x$ac_runtime_checking != x ; then
619 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
620 [Define if you want runtime assertions enabled. This is a cheap check.])
622 if test x$ac_tree_checking != x ; then
623 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
624 [Define if you want all operations on trees (the basic data
625 structure of the front ends) to be checked for dynamic type safety
626 at runtime. This is moderately expensive.
630 if test x$ac_types_checking != x ; then
631 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
632 [Define if you want all gimple types to be verified after gimplifiation.
636 AC_SUBST(TREECHECKING)
637 if test x$ac_rtl_checking != x ; then
638 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
639 [Define if you want all operations on RTL (the basic data structure
640 of the optimizer and back end) to be checked for dynamic type safety
641 at runtime. This is quite expensive.])
643 if test x$ac_rtlflag_checking != x ; then
644 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
645 [Define if you want RTL flag accesses to be checked against the RTL
646 codes that are supported for each access macro. This is relatively
649 if test x$ac_gc_checking != x ; then
650 AC_DEFINE(ENABLE_GC_CHECKING, 1,
651 [Define if you want the garbage collector to do object poisoning and
652 other memory allocation checks. This is quite expensive.])
654 if test x$ac_gc_always_collect != x ; then
655 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
656 [Define if you want the garbage collector to operate in maximally
657 paranoid mode, validating the entire heap and collecting garbage at
658 every opportunity. This is extremely expensive.])
660 if test x$ac_fold_checking != x ; then
661 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
662 [Define if you want fold checked that it never destructs its argument.
663 This is quite expensive.])
665 valgrind_path_defines=
668 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
669 dnl # an if statement. This was the source of very frustrating bugs
670 dnl # in converting to autoconf 2.5x!
671 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
673 # It is certainly possible that there's valgrind but no valgrind.h.
674 # GCC relies on making annotations so we must have both.
675 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
676 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
677 [[#include <valgrind/memcheck.h>
678 #ifndef VALGRIND_DISCARD
679 #error VALGRIND_DISCARD not defined
681 [gcc_cv_header_valgrind_memcheck_h=yes],
682 [gcc_cv_header_valgrind_memcheck_h=no])
683 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
684 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
685 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
686 [[#include <memcheck.h>
687 #ifndef VALGRIND_DISCARD
688 #error VALGRIND_DISCARD not defined
690 [gcc_cv_header_memcheck_h=yes],
691 [gcc_cv_header_memcheck_h=no])
692 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
693 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
694 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
695 [Define if valgrind's valgrind/memcheck.h header is installed.])
697 if test $gcc_cv_header_memcheck_h = yes; then
698 AC_DEFINE(HAVE_MEMCHECK_H, 1,
699 [Define if valgrind's memcheck.h header is installed.])
702 if test x$ac_valgrind_checking != x ; then
703 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
704 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
705 if test "x$valgrind_path" = "x" \
706 || (test $have_valgrind_h = no \
707 && test $gcc_cv_header_memcheck_h = no \
708 && test $gcc_cv_header_valgrind_memcheck_h = no); then
709 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
711 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
712 valgrind_command="$valgrind_path -q"
713 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
714 [Define if you want to run subprograms and generated programs
715 through valgrind (a memory checker). This is extremely expensive.])
717 AC_SUBST(valgrind_path_defines)
718 AC_SUBST(valgrind_command)
720 # Enable code coverage collection
721 AC_ARG_ENABLE(coverage,
722 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
723 [enable compiler's code coverage collection.
724 Use to measure compiler performance and locate
725 unused parts of the compiler. With LEVEL, specify
726 optimization. Values are opt, noopt,
728 [case "${enableval}" in
730 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0 -fkeep-static-functions"
733 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2 -fkeep-static-functions"
736 # a.k.a. --disable-coverage
740 AC_MSG_ERROR(unknown coverage setting $enableval)
744 AC_SUBST(coverage_flags)
746 AC_ARG_ENABLE(gather-detailed-mem-stats,
747 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
748 [enable detailed memory allocation stats gathering])], [],
749 [enable_gather_detailed_mem_stats=no])
750 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
751 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
752 [Define to enable detailed memory allocation stats gathering.])
754 AC_ARG_ENABLE(valgrind-annotations,
755 [AS_HELP_STRING([--enable-valgrind-annotations],
756 [enable valgrind runtime interaction])], [],
757 [enable_valgrind_annotations=no])
758 if test x$enable_valgrind_annotations != xno \
759 || test x$ac_valgrind_checking != x; then
760 if (test $have_valgrind_h = no \
761 && test $gcc_cv_header_memcheck_h = no \
762 && test $gcc_cv_header_valgrind_memcheck_h = no); then
763 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
765 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
766 [Define to get calls to the valgrind runtime enabled.])
769 # -------------------------------
770 # Miscenalleous configure options
771 # -------------------------------
775 [AS_HELP_STRING([--with-stabs],
776 [arrange to use stabs instead of host debug format])],
780 # Determine whether or not multilibs are enabled.
781 AC_ARG_ENABLE(multilib,
782 [AS_HELP_STRING([--enable-multilib],
783 [enable library support for multiple ABIs])],
784 [], [enable_multilib=yes])
785 AC_SUBST(enable_multilib)
787 # Determine whether or not multiarch is enabled.
788 AC_ARG_ENABLE(multiarch,
789 [AS_HELP_STRING([--enable-multiarch],
790 [enable support for multiarch paths])],
791 [case "${enableval}" in
792 yes|no|auto) enable_multiarch=$enableval;;
793 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
794 esac], [enable_multiarch=auto])
795 if test x${enable_multiarch} = xauto; then
796 if test x${with_native_system_header_dir} != x; then
797 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
800 if test x$host != x$target && test "x$with_sysroot" = x; then
801 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
805 AC_MSG_CHECKING(for multiarch configuration)
806 AC_SUBST(enable_multiarch)
807 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
809 # needed for setting the multiarch name for soft-float/hard-float ABIs
813 # default stack clash protection guard size as power of twos in bytes.
814 # Please keep these in sync with params.def.
818 # Keep the default value when the option is not used to 0, this allows us to
819 # distinguish between the cases where the user specifially set a value via
820 # configure and when the normal default value is used.
821 AC_ARG_WITH(stack-clash-protection-guard-size,
822 [AS_HELP_STRING([--with-stack-clash-protection-guard-size=size],
823 [Set the default stack clash protection guard size for specific targets as a power of two in bytes.])],
824 [DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size"], [DEFAULT_STK_CLASH_GUARD_SIZE=0])
825 if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \
826 && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \
827 || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then
828 AC_MSG_ERROR(m4_normalize([
829 Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. \
830 Must be between $stk_clash_min and $stk_clash_max.]))
833 AC_DEFINE_UNQUOTED(DEFAULT_STK_CLASH_GUARD_SIZE, $DEFAULT_STK_CLASH_GUARD_SIZE,
834 [Define to larger than zero set the default stack clash protector size.])
836 # Enable __cxa_atexit for C++.
837 AC_ARG_ENABLE(__cxa_atexit,
838 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
841 # Enable C extension for decimal float if target supports it.
842 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
844 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
845 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
846 [Define to 1 to enable decimal float extension to C.])
848 # Use default_decimal_float for dependency.
849 enable_decimal_float=$default_decimal_float
851 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
852 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
853 [Define to 1 to specify that we are using the BID decimal floating
854 point format instead of DPD])
856 # Enable C extension for fixed-point arithmetic.
857 AC_ARG_ENABLE(fixed-point,
858 [AS_HELP_STRING([--enable-fixed-point],
859 [enable fixed-point arithmetic extension to C])],
864 enable_fixed_point=yes
868 enable_fixed_point=yes
871 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
872 enable_fixed_point=no
876 AC_SUBST(enable_fixed_point)
878 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
879 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
880 [Define to 1 to enable fixed-point arithmetic extension to C.])
883 # Pass with no value to take the default
884 # Pass with a value to specify a thread package
885 AC_ARG_ENABLE(threads,
886 [AS_HELP_STRING([[--enable-threads[=LIB]]],
887 [enable thread usage for target GCC,
888 using LIB thread package])],,
892 [AS_HELP_STRING([--enable-tls],
893 [enable or disable generation of tls code
894 overriding the assembler check for tls support])],
898 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
899 Valid choices are 'yes' and 'no'.]) ;;
903 AC_ARG_ENABLE(vtable-verify,
904 [AS_HELP_STRING([--enable-vtable-verify],
905 [enable vtable verification feature])],,
906 [enable_vtable_verify=no])
907 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
908 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
909 [Define 0/1 if vtable verification feature is enabled.])
911 AC_ARG_ENABLE(objc-gc,
912 [AS_HELP_STRING([--enable-objc-gc],
913 [enable the use of Boehm's garbage collector with
914 the GNU Objective-C runtime])],
915 if test x$enable_objc_gc = xno; then
923 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
924 dwarf2="$with_dwarf2",
927 AC_ARG_ENABLE(shared,
928 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
930 case $enable_shared in
934 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
935 for pkg in $enableval; do
936 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
943 ], [enable_shared=yes])
944 AC_SUBST(enable_shared)
947 [ --disable-gcov don't provide libgcov and related host tools],
948 [], [enable_gcov=yes])
949 AC_SUBST(enable_gcov)
952 [AS_HELP_STRING([--with-specs=SPECS],
953 [add SPECS to driver command-line processing])],
954 [CONFIGURE_SPECS=$withval],
957 AC_SUBST(CONFIGURE_SPECS)
959 ACX_PKGVERSION([GCC])
960 ACX_BUGURL([https://gcc.gnu.org/bugs/])
962 # Sanity check enable_languages in case someone does not run the toplevel
963 # configure # script.
964 AC_ARG_ENABLE(languages,
965 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
966 [case ,${enable_languages}, in
968 # go safe -- we cannot be much sure without the toplevel
970 # analysis of which target libs are present and usable
974 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
979 enable_languages=c,${enable_languages}
982 [enable_languages=c])
984 if test x"$enable_as_accelerator_for" != x; then
985 AC_DEFINE(ACCEL_COMPILER, 1,
986 [Define if this compiler should be built as the offload target compiler.])
987 enable_as_accelerator=yes
990 # In this case we expect offload compiler to be built as native, so we
991 # need to rename the driver to avoid clashes with host's drivers.
992 program_transform_name="s&^&${target}-&" ;;
994 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
995 program_transform_name=`echo $program_transform_name | sed $sedscript`
996 accel_dir_suffix=/accel/${target_noncanonical}
997 real_target_noncanonical=${enable_as_accelerator_for}
999 AC_SUBST(enable_as_accelerator)
1000 AC_SUBST(real_target_noncanonical)
1001 AC_SUBST(accel_dir_suffix)
1003 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
1004 tgt=`echo $tgt | sed 's/=.*//'`
1006 if echo "$tgt" | grep "^hsa" > /dev/null ; then
1012 if test x"$offload_targets" = x; then
1013 offload_targets=$tgt
1015 offload_targets="$offload_targets,$tgt"
1018 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
1019 [Define to offload targets, separated by commas.])
1020 if test x"$enable_offloading" != x; then
1021 AC_DEFINE(ENABLE_OFFLOADING, 1,
1022 [Define this to enable support for offloading.])
1024 AC_DEFINE(ENABLE_OFFLOADING, 0,
1025 [Define this to enable support for offloading.])
1028 if test x"$enable_hsa" = x1 ; then
1029 AC_DEFINE(ENABLE_HSA, 1,
1030 [Define this to enable support for generating HSAIL.])
1033 AC_ARG_WITH(multilib-list,
1034 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
1036 with_multilib_list=default)
1038 # -------------------------
1039 # Checks for other programs
1040 # -------------------------
1044 # Find some useful tools
1046 # We need awk to create options.c and options.h.
1047 # Bail out if it's missing.
1049 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1056 AC_SUBST(ranlib_flags)
1060 # See if cmp has --ignore-initial.
1061 gcc_AC_PROG_CMP_IGNORE_INITIAL
1063 # See if we have the mktemp command.
1064 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1066 # See if makeinfo has been installed and is modern enough
1067 # that we can use it.
1068 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1069 [GNU texinfo.* \([0-9][0-9.]*\)],
1070 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1071 if test $gcc_cv_prog_makeinfo_modern = no; then
1073 *** Makeinfo is missing or too old.
1074 *** Info documentation will not be built.])
1079 AC_SUBST(BUILD_INFO)
1081 # Is pod2man recent enough to regenerate manpages?
1082 AC_MSG_CHECKING([for recent Pod::Man])
1083 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1085 GENERATED_MANPAGES=generated-manpages
1090 AC_SUBST(GENERATED_MANPAGES)
1092 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1095 dnl Don't use AC_PROG_LEX; we insist on flex.
1096 dnl LEXLIB is not useful in gcc.
1097 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1100 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1102 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1103 # check for build == host before using them.
1106 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1107 && test -d ../binutils ; then
1108 NM='${objdir}/../binutils/nm-new'
1110 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1114 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1115 && test -d ../binutils ; then
1116 AR='${objdir}/../binutils/ar'
1118 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1121 # The jit documentation looks better if built with sphinx, but can be
1122 # built with texinfo if sphinx is not available.
1123 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1124 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1126 # --------------------
1127 # Checks for C headers
1128 # --------------------
1130 # Need to reject headers which give warnings, so that the -Werror bootstrap
1131 # works later. *sigh* This needs to come before all header checks.
1138 AC_HEADER_TIOCGWINSZ
1139 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1140 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1141 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1142 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1144 # Check for thread headers.
1145 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1146 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1148 # These tests can't be done till we know if we have limits.h.
1152 # ----------------------
1153 # Checks for C++ headers
1154 # ----------------------
1156 dnl Autoconf will give an error in the configure script if there is no
1157 dnl C++ preprocessor. Hack to prevent that.
1158 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1160 m4_popdef([AC_MSG_ERROR])[]dnl
1162 AC_CHECK_HEADERS(unordered_map)
1163 AC_CHECK_HEADERS(tr1/unordered_map)
1164 AC_CHECK_HEADERS(ext/hash_map)
1167 # Dependency checking.
1171 AC_CONFIG_COMMANDS([gccdepdir],[
1172 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1173 for lang in $subdirs c-family common
1175 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1176 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1178 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1185 # These libraries may be used by collect2.
1186 # We may need a special search path to get them linked.
1187 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1189 for libs in '' -lld -lmld \
1190 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1191 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1194 AC_TRY_LINK_FUNC(ldopen,
1195 [gcc_cv_collect2_libs="$libs"; break])
1198 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1199 case $gcc_cv_collect2_libs in
1201 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1203 AC_SUBST(COLLECT2_LIBS)
1205 # When building Ada code on Alpha, we need exc_resume which is usually in
1206 # -lexc. So test for it.
1209 AC_SEARCH_LIBS(exc_resume, exc)
1212 AC_SUBST(GNAT_LIBEXC)
1214 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1217 AC_SEARCH_LIBS(kstat_open, kstat)
1218 EXTRA_GCC_LIBS="$LIBS"
1220 AC_SUBST(EXTRA_GCC_LIBS)
1222 # Some systems put ldexp and frexp in libm instead of libc; assume
1223 # they're both in the same place. jcf-dump needs them.
1226 AC_SEARCH_LIBS(ldexp, m)
1231 # Some systems need dlopen
1234 AC_SEARCH_LIBS(dlopen, dl)
1239 # Use <inttypes.h> only if it exists,
1240 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1242 AC_MSG_CHECKING(for inttypes.h)
1243 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1244 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1245 [[#define __STDC_FORMAT_MACROS
1246 #include <sys/types.h>
1247 #include <inttypes.h>]],
1252 [gcc_cv_header_inttypes_h=yes],
1253 [gcc_cv_header_inttypes_h=no])])
1254 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1255 if test $gcc_cv_header_inttypes_h = yes; then
1256 AC_DEFINE(HAVE_INTTYPES_H, 1,
1257 [Define if you have a working <inttypes.h> header file.])
1260 dnl Disabled until we have a complete test for buggy enum bitfields.
1261 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1263 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1264 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1265 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1266 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1267 putchar_unlocked putc_unlocked)
1268 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1269 popen sysconf strsignal getrusage nl_langinfo \
1270 gettimeofday mbstowcs wcswidth mmap setlocale \
1271 gcc_UNLOCKED_FUNCS madvise)
1273 if test x$ac_cv_func_mbstowcs = xyes; then
1274 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1275 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1281 [gcc_cv_func_mbstowcs_works=yes],
1282 [gcc_cv_func_mbstowcs_works=no],
1283 [gcc_cv_func_mbstowcs_works=yes])])
1284 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1285 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1286 [Define this macro if mbstowcs does not crash when its
1287 first argument is NULL.])
1291 AC_CHECK_TYPE(ssize_t, int)
1292 AC_CHECK_TYPE(caddr_t, char *)
1294 GCC_AC_FUNC_MMAP_BLACKLIST
1298 # Under VMS, vfork works very differently than on Unix. The standard test
1299 # won't work, and it isn't easily adaptable. It makes more sense to
1301 ac_cv_func_vfork_works=yes
1308 # Until we have in-tree GNU iconv:
1310 if test -f "$LTLIBICONV"; then
1311 LIBICONV_DEP=$LTLIBICONV
1313 AC_SUBST(LIBICONV_DEP)
1319 # We will need to find libiberty.h and ansidecl.h
1320 saved_CFLAGS="$CFLAGS"
1321 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1322 saved_CXXFLAGS="$CXXFLAGS"
1323 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1325 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1326 # normal autoconf function for these. But force definition of
1327 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1328 # basename handling in libiberty.h.
1329 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1330 #undef HAVE_DECL_BASENAME
1331 #define HAVE_DECL_BASENAME 1
1332 #include "ansidecl.h"
1333 #include "system.h"])
1335 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1336 madvise stpcpy strnlen strsignal strverscmp \
1337 strtol strtoul strtoll strtoull setenv unsetenv \
1338 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1339 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1340 #include "ansidecl.h"
1341 #include "system.h"])
1343 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1344 #include "ansidecl.h"
1346 #ifdef HAVE_SYS_RESOURCE_H
1347 #include <sys/resource.h>
1351 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1352 #include "ansidecl.h"
1354 #ifdef HAVE_SYS_RESOURCE_H
1355 #include <sys/resource.h>
1357 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1358 [Define to `long' if <sys/resource.h> doesn't define.])])
1360 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1361 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1362 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1363 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1364 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1365 #include "ansidecl.h"
1374 gcc_AC_CHECK_DECLS(times, , ,[
1375 #include "ansidecl.h"
1377 #ifdef HAVE_SYS_TIMES_H
1378 #include <sys/times.h>
1382 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1383 #include "ansidecl.h"
1388 # More time-related stuff.
1389 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1390 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1391 #include "ansidecl.h"
1393 #ifdef HAVE_SYS_TIMES_H
1394 #include <sys/times.h>
1396 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1397 if test $ac_cv_struct_tms = yes; then
1398 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1399 [Define if <sys/times.h> defines struct tms.])
1402 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1403 # revisit after autoconf 2.50.
1404 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1405 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1406 #include "ansidecl.h"
1408 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1409 if test $gcc_cv_type_clock_t = yes; then
1410 AC_DEFINE(HAVE_CLOCK_T, 1,
1411 [Define if <time.h> defines clock_t.])
1414 # Check if F_SETLKW is supported by fcntl.
1415 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1416 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1417 #include <fcntl.h>]], [[
1423 return fcntl (1, F_SETLKW, &fl);]])],
1424 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1425 if test $ac_cv_f_setlkw = yes; then
1426 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1427 [Define if F_SETLKW supported by fcntl.])
1430 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1431 CFLAGS="$saved_CFLAGS"
1432 CXXFLAGS="$saved_CXXFLAGS"
1434 # mkdir takes a single argument on some systems.
1435 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1443 # With Setjmp/Longjmp based exception handling.
1444 AC_ARG_ENABLE(sjlj-exceptions,
1445 [AS_HELP_STRING([--enable-sjlj-exceptions],
1446 [arrange to use setjmp/longjmp exception handling])],
1449 if test $enableval != yes; then
1450 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1455 force_sjlj_exceptions=yes],
1458 force_sjlj_exceptions=yes
1462 force_sjlj_exceptions=yes
1466 force_sjlj_exceptions=no
1469 if test $force_sjlj_exceptions = yes; then
1470 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1471 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1472 [Define 0/1 to force the choice for exception handling model.])
1475 # --------------------------------------------------------
1476 # Build, host, and target specific configuration fragments
1477 # --------------------------------------------------------
1479 # Collect build-machine-specific information.
1480 . ${srcdir}/config.build || exit 1
1482 # Collect host-machine-specific information.
1483 . ${srcdir}/config.host || exit 1
1487 # Collect target-machine-specific information.
1488 . ${srcdir}/config.gcc || exit 1
1490 extra_objs="${host_extra_objs} ${extra_objs}"
1491 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1493 # Default the target-machine variables that were not explicitly set.
1494 if test x"$tm_file" = x
1495 then tm_file=$cpu_type/$cpu_type.h; fi
1497 if test x"$extra_headers" = x
1498 then extra_headers=; fi
1500 if test x$md_file = x
1501 then md_file=$cpu_type/$cpu_type.md; fi
1503 if test x$out_file = x
1504 then out_file=$cpu_type/$cpu_type.c; fi
1506 if test x"$tmake_file" = x
1507 then tmake_file=$cpu_type/t-$cpu_type
1510 # Support --enable-initfini-array.
1511 if test x$enable_initfini_array != xno; then
1512 tm_file="${tm_file} initfini-array.h"
1515 if test x"$dwarf2" = xyes
1516 then tm_file="$tm_file tm-dwarf2.h"
1519 # Say what files are being used for the output code and MD file.
1520 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1521 echo "Using \`$srcdir/config/$md_file' as machine description file."
1523 # If any of the xm_file variables contain nonexistent files, warn
1524 # about them and drop them.
1527 for x in $build_xm_file; do
1528 if test -f $srcdir/config/$x
1530 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1536 for x in $host_xm_file; do
1537 if test -f $srcdir/config/$x
1539 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1545 for x in $xm_file; do
1546 if test -f $srcdir/config/$x
1548 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1554 for f in $tm_file; do
1557 if test $count = ax; then
1558 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1560 echo "Using the following target machine macro files:"
1561 for f in $tm_file; do
1562 echo " $srcdir/config/$f"
1566 if test x$use_long_long_for_widest_fast_int = xyes; then
1567 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1568 [Define to 1 if the 'long long' type is wider than 'long' but still
1569 efficiently supported by the host hardware.])
1572 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1573 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1575 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1576 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1579 for f in $host_xm_file; do
1582 if test $count = a; then
1584 elif test $count = ax; then
1585 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1587 echo "Using the following host machine macro files:"
1588 for f in $host_xm_file; do
1589 echo " $srcdir/config/$f"
1592 echo "Using ${out_host_hook_obj} for host machine hooks."
1594 if test "$host_xm_file" != "$build_xm_file"; then
1596 for f in $build_xm_file; do
1599 if test $count = a; then
1601 elif test $count = ax; then
1602 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1604 echo "Using the following build machine macro files:"
1605 for f in $build_xm_file; do
1606 echo " $srcdir/config/$f"
1611 if test -n "$configured_native_system_header_dir"; then
1612 native_system_header_dir=$configured_native_system_header_dir
1614 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1615 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1619 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1620 gcc_cv_mcontext_underscores,
1621 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1622 #include <sys/cdefs.h>
1623 #include <sys/signal.h>
1624 #include <ucontext.h>
1625 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1627 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1628 if test $gcc_cv_mcontext_underscores = yes; then
1629 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1630 [mcontext_t fields start with __])
1639 # Check if a valid thread package
1640 case ${enable_threads} in
1643 target_thread_file='single'
1647 target_thread_file='single'
1649 aix | dce | lynx | mipssde | posix | rtems | \
1650 single | tpf | vxworks | win32)
1651 target_thread_file=${enable_threads}
1654 echo "${enable_threads} is an unknown thread package" 1>&2
1659 if test x${thread_file} = x; then
1660 # No thread file set by target-specific clauses in config.gcc,
1661 # so use file chosen by default logic above
1662 thread_file=${target_thread_file}
1670 if test x$enable___cxa_atexit = xyes || \
1671 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1672 if test x$host = x$target; then
1674 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1675 # keyed to flag_use_cxa_atexit
1683 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1684 [echo "__cxa_atexit can't be enabled on this target"])
1688 # We can't check for __cxa_atexit when building a cross, so assume
1692 if test x$use_cxa_atexit = xyes; then
1693 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1694 [Define if you want to use __cxa_atexit, rather than atexit, to
1695 register C++ destructors for local statics and global objects.
1696 This is essential for fully standards-compliant handling of
1697 destructors, but requires __cxa_atexit in libc.])
1701 # Look for a file containing extra machine modes.
1702 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1703 extra_modes_file='$(srcdir)'/config/${extra_modes}
1704 AC_SUBST(extra_modes_file)
1705 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1706 [Define to the name of a file containing a list of extra machine modes
1707 for this architecture.])
1710 # Convert extra_options into a form suitable for Makefile use.
1713 for f in $extra_options; do
1714 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1715 all_opt_files="$all_opt_files $srcdir/config/$f"
1717 AC_SUBST(extra_opt_files)
1719 # auto-host.h is the file containing items generated by autoconf and is
1720 # the first file included by config.h.
1721 # If host=build, it is correct to have bconfig include auto-host.h
1722 # as well. If host!=build, we are in error and need to do more
1723 # work to find out the build config parameters.
1724 if test x$host = x$build
1726 build_auto=auto-host.h
1728 # We create a subdir, then run autoconf in the subdir.
1729 # To prevent recursion we set host and build for the new
1730 # invocation of configure to the build for this invocation
1737 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1738 *) realsrcdir=../${srcdir};;
1740 # Clearing GMPINC is necessary to prevent host headers being
1741 # used by the build compiler. Defining GENERATOR_FILE stops
1742 # system.h from including gmp.h.
1743 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1744 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1745 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1746 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1747 ${realsrcdir}/configure \
1748 --enable-languages=${enable_languages-all} \
1749 --target=$target_alias --host=$build_alias --build=$build_alias
1751 # We just finished tests for the build machine, so rename
1752 # the file auto-build.h in the gcc directory.
1753 mv auto-host.h ../auto-build.h
1756 build_auto=auto-build.h
1758 AC_SUBST(build_subdir)
1760 tm_file="${tm_file} defaults.h"
1761 tm_p_file="${tm_p_file} tm-preds.h"
1762 tm_d_file="${tm_d_file} defaults.h"
1763 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1764 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1765 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1766 # put this back in temporarily.
1767 xm_file="auto-host.h ansidecl.h ${xm_file}"
1774 # Compile in configure arguments.
1775 if test -f configargs.h ; then
1776 # Being re-configured.
1777 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1778 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
1779 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
1780 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1783 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1786 # Double all backslashes and backslash all quotes to turn
1787 # gcc_config_arguments into a C string.
1788 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1789 $gcc_config_arguments
1791 gcc_config_arguments_str=`cat conftest.out`
1794 cat > configargs.h <<EOF
1795 /* Generated automatically. */
1796 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1797 static const char thread_model[] = "$thread_file";
1799 static const struct {
1800 const char *name, *value;
1801 } configure_default_options[] = $configure_default_options;
1806 gcc_BASEVER=`cat $srcdir/BASE-VER`
1807 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1808 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1809 if test -f $srcdir/REVISION ; then
1810 gcc_REVISION=`cat $srcdir/REVISION`
1814 cat > plugin-version.h <<EOF
1815 #include "configargs.h"
1817 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1818 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1819 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1820 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1822 static char basever[] = "$gcc_BASEVER";
1823 static char datestamp[] = "$gcc_DATESTAMP";
1824 static char devphase[] = "$gcc_DEVPHASE";
1825 static char revision[] = "$gcc_REVISION";
1827 /* FIXME plugins: We should make the version information more precise.
1828 One way to do is to add a checksum. */
1830 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1832 configuration_arguments};
1836 # Determine what GCC version number to use in filesystem paths.
1839 # Internationalization
1840 ZW_GNU_GETTEXT_SISTER_DIR
1842 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1843 # -liconv on the link line twice.
1844 case "$LIBINTL" in *$LIBICONV*)
1848 AC_ARG_ENABLE(secureplt,
1849 [AS_HELP_STRING([--enable-secureplt],
1850 [enable -msecure-plt by default for PowerPC])],
1853 AC_ARG_ENABLE(mingw-wildcard,
1854 [AS_HELP_STRING([--enable-mingw-wildcard],
1855 [Set whether to expand wildcard on command-line.
1856 Default to platform configuration])],
1857 [],[enable_mingw_wildcard=platform])
1858 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
1859 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
1860 $(test x"$enable_mingw_wildcard" = xno; echo $?),
1861 [Value to set mingw's _dowildcard to.])])
1863 AC_ARG_ENABLE(large-address-aware,
1864 [AS_HELP_STRING([--enable-large-address-aware],
1865 [Link mingw executables with --large-address-aware])])
1866 AS_IF([test x"$enable_large_address_aware" = xyes],
1867 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
1868 [Define if we should link mingw executables with --large-address-aware])])
1870 AC_ARG_ENABLE(leading-mingw64-underscores,
1871 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1872 [enable leading underscores on 64 bit mingw targets]),
1874 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1875 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1876 [Define if we should use leading underscore on 64 bit mingw targets])])
1879 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1882 AC_ARG_ENABLE(frame-pointer,
1883 [AS_HELP_STRING([--enable-frame-pointer],
1884 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1887 linux* | darwin[[8912]]*)
1888 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1890 enable_frame_pointer=no
1893 enable_frame_pointer=yes
1898 # Windows32 Registry support for specifying GCC installation paths.
1899 AC_ARG_ENABLE(win32-registry,
1900 [AS_HELP_STRING([--disable-win32-registry],
1901 [disable lookup of installation paths in the
1902 Registry on Windows hosts])
1903 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1904 AS_HELP_STRING([--enable-win32-registry=KEY],
1905 [use KEY instead of GCC version as the last portion
1906 of the registry key])],,)
1909 win32 | pe | cygwin* | mingw32*)
1910 if test "x$enable_win32_registry" != xno; then
1911 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1914 if test "x$enable_win32_registry" != xno; then
1915 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1916 [Define to 1 if installation paths should be looked up in the Windows
1917 Registry. Ignored on non-Windows hosts.])
1919 if test "x$enable_win32_registry" != xyes \
1920 && test "x$enable_win32_registry" != x; then
1921 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1922 [Define to be the last component of the Windows registry key under which
1923 to look for installation paths. The full key used will be
1924 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1925 The default is the GCC version number.])
1931 # Get an absolute path to the GCC top-level source directory
1932 holddir=`${PWDCMD-pwd}`
1934 topdir=`${PWDCMD-pwd}`
1937 # Conditionalize the makefile for this host machine.
1939 for f in ${host_xmake_file}
1941 if test -f ${srcdir}/config/$f
1943 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1947 # Conditionalize the makefile for this target machine.
1949 for f in ${tmake_file}
1951 if test -f ${srcdir}/config/$f
1953 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1956 tmake_file="${tmake_file_}"
1958 out_object_file=`basename $out_file .c`.o
1959 common_out_object_file=`basename $common_out_file .c`.o
1961 tm_file_list="options.h"
1962 tm_include_list="options.h insn-constants.h"
1963 for f in $tm_file; do
1966 f=`echo $f | sed 's/^..//'`
1967 tm_file_list="${tm_file_list} $f"
1968 tm_include_list="${tm_include_list} $f"
1971 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1972 tm_include_list="${tm_include_list} $f"
1975 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1976 tm_include_list="${tm_include_list} config/$f"
1983 for f in $tm_p_file; do
1986 tm_p_file_list="${tm_p_file_list} $f"
1987 tm_p_include_list="${tm_p_include_list} $f"
1990 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1991 tm_p_include_list="${tm_p_include_list} config/$f"
1996 tm_d_include_list="options.h insn-constants.h"
1997 for f in $tm_d_file; do
2000 tm_d_file_list="${tm_d_file_list} \$(srcdir)/$f"
2001 tm_d_include_list="${tm_d_include_list} $f"
2004 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
2005 tm_d_include_list="${tm_d_include_list} config/$f"
2012 for f in $xm_file; do
2015 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2016 xm_include_list="${xm_include_list} $f"
2019 xm_file_list="${xm_file_list} $f"
2020 xm_include_list="${xm_include_list} $f"
2023 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2024 xm_include_list="${xm_include_list} config/$f"
2030 host_xm_include_list=
2031 for f in $host_xm_file; do
2034 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2035 host_xm_include_list="${host_xm_include_list} $f"
2038 host_xm_file_list="${host_xm_file_list} $f"
2039 host_xm_include_list="${host_xm_include_list} $f"
2042 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2043 host_xm_include_list="${host_xm_include_list} config/$f"
2049 for f in $build_xm_file; do
2052 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2053 build_xm_include_list="${build_xm_include_list} $f"
2055 auto-build.h | auto-host.h )
2056 build_xm_file_list="${build_xm_file_list} $f"
2057 build_xm_include_list="${build_xm_include_list} $f"
2060 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2061 build_xm_include_list="${build_xm_include_list} config/$f"
2066 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2067 # cross-compiler which does not use the native headers and libraries.
2068 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2069 CROSS= AC_SUBST(CROSS)
2070 ALL=all.internal AC_SUBST(ALL)
2071 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2072 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2074 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2075 test x$build != x$host || test "x$with_build_sysroot" != x; then
2076 if test "x$with_build_sysroot" != x; then
2077 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2079 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2082 if test x$host != x$target
2084 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2086 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2087 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2088 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2091 if test "x$with_build_sysroot" != "x"; then
2092 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2093 elif test "x$with_sysroot" = x; then
2094 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2095 elif test "x$with_sysroot" = xyes; then
2096 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2098 target_header_dir="${with_sysroot}${native_system_header_dir}"
2101 target_header_dir=${native_system_header_dir}
2104 # If this is a cross-compiler that does not
2105 # have its own set of headers then define
2108 # If this is using newlib, without having the headers available now,
2109 # then define inhibit_libc in LIBGCC2_CFLAGS.
2110 # This prevents libgcc2 from containing any code which requires libc
2112 : ${inhibit_libc=false}
2113 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2114 test x$with_newlib = xyes ; } &&
2115 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2118 AC_SUBST(inhibit_libc)
2120 # When building gcc with a cross-compiler, we need to adjust things so
2121 # that the generator programs are still built with the native compiler.
2122 # Also, we cannot run fixincludes.
2124 # These are the normal (build=host) settings:
2125 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2126 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2127 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2128 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2129 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2130 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2132 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2133 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2135 # And these apply if build != host, or we are generating coverage data
2136 if test x$build != x$host || test "x$coverage_flags" != x
2138 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2139 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2140 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2142 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2143 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2144 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2145 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2147 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2148 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2150 # Expand extra_headers to include complete path.
2151 # This substitutes for lots of t-* files.
2153 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2154 for file in ${extra_headers} ; do
2155 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2158 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2159 if test x"$use_gcc_tgmath" = xyes
2160 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2163 # Define collect2 in Makefile.
2164 case $host_can_use_collect2 in
2166 *) collect2='collect2$(exeext)' ;;
2168 AC_SUBST([collect2])
2170 # Add a definition of USE_COLLECT2 if system wants one.
2171 case $use_collect2 in
2172 no) use_collect2= ;;
2175 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2176 xm_defines="${xm_defines} USE_COLLECT2"
2177 case $host_can_use_collect2 in
2179 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2185 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2186 [Define to the name of the LTO plugin DSO that must be
2187 passed to the linker's -plugin=LIB option.])
2189 # ---------------------------
2190 # Assembler & linker features
2191 # ---------------------------
2193 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2194 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2195 # However when ld-new is first executed from the build tree, libtool will
2196 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2197 # to the build tree. While doing this we need to use the previous-stage
2198 # linker, or we have an infinite loop. The presence of a shell script as
2199 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2200 # the gcc/collect-ld script. So we need to know how libtool works, or
2201 # exec-tool will fail.
2203 m4_defun([_LT_CONFIG_COMMANDS], [])
2206 AC_SUBST(enable_fast_install)
2208 # Identify the assembler which will work hand-in-glove with the newly
2209 # built GCC, so that we can examine its features. This is the assembler
2210 # which will be driven by the driver program.
2212 # If build != host, and we aren't building gas in-tree, we identify a
2213 # build->target assembler and hope that it will have the same features
2214 # as the host->target assembler we'll be using.
2215 gcc_cv_gas_major_version=
2216 gcc_cv_gas_minor_version=
2217 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2219 m4_pattern_allow([AS_FOR_TARGET])dnl
2220 AS_VAR_SET_IF(gcc_cv_as,, [
2221 if test -x "$DEFAULT_ASSEMBLER"; then
2222 gcc_cv_as="$DEFAULT_ASSEMBLER"
2223 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2224 && test -f ../gas/Makefile \
2225 && test x$build = x$host; then
2226 gcc_cv_as=../gas/as-new$build_exeext
2227 elif test -x as$build_exeext; then
2228 # Build using assembler in the current directory.
2229 gcc_cv_as=./as$build_exeext
2230 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2231 gcc_cv_as="$AS_FOR_TARGET"
2233 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2236 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2237 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2238 case "$ORIGINAL_AS_FOR_TARGET" in
2239 ./as | ./as$build_exeext) ;;
2240 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2243 AC_MSG_CHECKING(what assembler to use)
2244 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2245 # Single tree build which includes gas. We want to prefer it
2246 # over whatever linker top-level may have detected, since
2247 # we'll use what we're building after installation anyway.
2248 AC_MSG_RESULT(newly built gas)
2250 _gcc_COMPUTE_GAS_VERSION
2251 in_tree_gas_is_elf=no
2252 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2253 || (grep 'obj_format = multi' ../gas/Makefile \
2254 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2256 in_tree_gas_is_elf=yes
2259 AC_MSG_RESULT($gcc_cv_as)
2265 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2266 [case "${enableval}" in
2272 install_gold_as_default=no
2274 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2275 [case "${enableval}" in
2277 install_gold_as_default=yes
2280 if test x${default_ld} != x; then
2281 install_gold_as_default=yes
2287 AC_MSG_ERROR([invalid --enable-gold argument])
2291 # Identify the linker which will work hand-in-glove with the newly
2292 # built GCC, so that we can examine its features. This is the linker
2293 # which will be driven by the driver program.
2295 # If build != host, and we aren't building gas in-tree, we identify a
2296 # build->target linker and hope that it will have the same features
2297 # as the host->target linker we'll be using.
2298 gcc_cv_gld_major_version=
2299 gcc_cv_gld_minor_version=
2300 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2301 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2302 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2304 AS_VAR_SET_IF(gcc_cv_ld,, [
2305 if test -x "$DEFAULT_LINKER"; then
2306 gcc_cv_ld="$DEFAULT_LINKER"
2307 elif test $install_gold_as_default = yes \
2308 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2309 && test -f ../gold/Makefile \
2310 && test x$build = x$host; then
2311 gcc_cv_ld=../gold/ld-new$build_exeext
2312 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2313 && test -f ../ld/Makefile \
2314 && test x$build = x$host; then
2315 gcc_cv_ld=../ld/ld-new$build_exeext
2316 elif test -x collect-ld$build_exeext; then
2317 # Build using linker in the current directory.
2318 gcc_cv_ld=./collect-ld$build_exeext
2319 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2320 gcc_cv_ld="$LD_FOR_TARGET"
2322 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2325 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2326 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2327 # if the PLUGIN_LD is set ld-new, just have it as ld
2328 # as that is the installed named.
2329 if test x$PLUGIN_LD_SUFFIX = xld-new \
2330 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2333 AC_ARG_WITH(plugin-ld,
2334 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2335 [if test x"$withval" != x; then
2336 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2337 PLUGIN_LD_SUFFIX="$withval"
2339 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2340 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2342 # Check to see if we are using gold instead of ld
2343 AC_MSG_CHECKING(whether we are using gold)
2345 if test x$gcc_cv_ld != x; then
2346 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2347 | grep "GNU gold" > /dev/null; then
2351 AC_MSG_RESULT($ld_is_gold)
2353 AC_MSG_CHECKING(gold linker with split stack support as non default)
2354 # Check to see if default ld is not gold, but gold is
2355 # available and has support for split stack. If gcc was configured
2356 # with gold then no checking is done.
2358 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2360 # For platforms other than powerpc64*, enable as appropriate.
2363 ld_gold=`which ${gcc_cv_ld}.gold`
2364 # Make sure this gold has minimal split stack support
2365 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2366 ld_vers=`$ld_gold --version | sed 1q`
2367 gold_vers=`echo $ld_vers | sed -n \
2368 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2370 # check that the gold version contains the complete split stack support
2371 # on powerpc64 big and little endian
2373 case "$gold_vers" in
2374 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2376 *) gold_non_default=no
2382 if test $gold_non_default = yes; then
2383 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2384 [Define if the gold linker supports split stack and is available as a non-default])
2387 AC_MSG_RESULT($gold_non_default)
2389 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2390 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2391 case "$ORIGINAL_LD_FOR_TARGET" in
2392 ./collect-ld | ./collect-ld$build_exeext) ;;
2393 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2396 AC_MSG_CHECKING(what linker to use)
2397 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2398 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2399 # Single tree build which includes ld. We want to prefer it
2400 # over whatever linker top-level may have detected, since
2401 # we'll use what we're building after installation anyway.
2402 AC_MSG_RESULT(newly built ld)
2404 in_tree_ld_is_elf=no
2405 if (grep 'EMUL = .*elf' ../ld/Makefile \
2406 || grep 'EMUL = .*linux' ../ld/Makefile \
2407 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2408 in_tree_ld_is_elf=yes
2409 elif test "$ld_is_gold" = yes; then
2410 in_tree_ld_is_elf=yes
2412 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
2415 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2416 if test x$gcc_cv_gld_version != x; then
2420 case $gcc_cv_gld_version in
2423 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2426 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2427 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2429 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2430 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2432 AC_MSG_RESULT($gcc_cv_ld)
2434 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2435 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2436 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2439 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2440 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2442 # Figure out what nm we will be using.
2443 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2444 AS_VAR_SET_IF(gcc_cv_nm,, [
2445 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2446 && test -f ../binutils/Makefile \
2447 && test x$build = x$host; then
2448 gcc_cv_nm=../binutils/nm-new$build_exeext
2449 elif test -x nm$build_exeext; then
2450 gcc_cv_nm=./nm$build_exeext
2451 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2452 gcc_cv_nm="$NM_FOR_TARGET"
2454 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2457 AC_MSG_CHECKING(what nm to use)
2458 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2459 # Single tree build which includes binutils.
2460 AC_MSG_RESULT(newly built nm)
2463 AC_MSG_RESULT($gcc_cv_nm)
2467 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2468 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2469 case "$ORIGINAL_NM_FOR_TARGET" in
2470 ./nm | ./nm$build_exeext) ;;
2471 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2475 # Figure out what objdump we will be using.
2476 AS_VAR_SET_IF(gcc_cv_objdump,, [
2477 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2478 && test -f ../binutils/Makefile \
2479 && test x$build = x$host; then
2480 # Single tree build which includes binutils.
2481 gcc_cv_objdump=../binutils/objdump$build_exeext
2482 elif test -x objdump$build_exeext; then
2483 gcc_cv_objdump=./objdump$build_exeext
2484 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2485 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2487 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2490 AC_MSG_CHECKING(what objdump to use)
2491 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2492 # Single tree build which includes binutils.
2493 AC_MSG_RESULT(newly built objdump)
2494 elif test x$gcc_cv_objdump = x; then
2495 AC_MSG_RESULT(not found)
2497 AC_MSG_RESULT($gcc_cv_objdump)
2500 # Figure out what readelf we will be using.
2501 AS_VAR_SET_IF(gcc_cv_readelf,, [
2502 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2503 && test -f ../binutils/Makefile \
2504 && test x$build = x$host; then
2505 # Single tree build which includes binutils.
2506 gcc_cv_readelf=../binutils/readelf$build_exeext
2507 elif test -x readelf$build_exeext; then
2508 gcc_cv_readelf=./readelf$build_exeext
2509 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2510 gcc_cv_readelf="$READELF_FOR_TARGET"
2512 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2515 AC_MSG_CHECKING(what readelf to use)
2516 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2517 # Single tree build which includes binutils.
2518 AC_MSG_RESULT(newly built readelf)
2519 elif test x$gcc_cv_readelf = x; then
2520 AC_MSG_RESULT(not found)
2522 AC_MSG_RESULT($gcc_cv_readelf)
2525 # Figure out what otool we will be using.
2526 AS_VAR_SET_IF(gcc_cv_otool,, [
2527 if test -x otool$build_exeext; then
2528 gcc_cv_otool=./otool$build_exeext
2529 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2530 gcc_cv_otool="$OTOOL_FOR_TARGET"
2532 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2535 AC_MSG_CHECKING(what otool to use)
2536 if test x$gcc_cv_otool = x; then
2537 AC_MSG_RESULT(not found)
2539 AC_MSG_RESULT($gcc_cv_otool)
2542 # Figure out what assembler alignment features are present.
2543 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2547 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2548 [Define if your assembler supports .balign and .p2align.])])
2550 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2553 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2554 [Define if your assembler supports specifying the maximum number
2555 of bytes to skip when using the GAS .p2align command.])])
2557 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2560 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2561 [Define if your assembler supports .literal16.])])
2563 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2565 [conftest_label1: .word 0
2567 conftest_label2: .word 0
2569 [if test x$gcc_cv_nm != x; then
2570 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2571 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2572 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2574 else gcc_cv_as_subsection_m1=yes
2576 rm -f conftest.nm1 conftest.nm2
2578 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2579 [Define if your assembler supports .subsection and .subsection -1 starts
2580 emitting at the beginning of your section.])])
2582 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2585 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2587 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2589 [ .weakref foobar, barfnot],,
2590 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2592 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2595 .NSUBSPA $CODE$,COMDAT],,
2596 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2598 # .hidden needs to be supported in both the assembler and the linker,
2599 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2600 # This is irritatingly difficult to feature test for; we have to check the
2601 # date string after the version number. If we've got an in-tree
2602 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2604 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2607 conftest_s=' .globl foobar,hidden'
2610 conftest_s=' .hidden foobar
2614 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2615 [elf,2,13,0],, [$conftest_s])
2618 # Darwin as has some visibility support, though with a different syntax.
2619 gcc_cv_as_hidden=yes
2623 # gnu_indirect_function type is an extension proposed at
2624 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2625 # selection of function implementation
2626 AC_ARG_ENABLE(gnu-indirect-function,
2627 [AS_HELP_STRING([--enable-gnu-indirect-function],
2628 [enable the use of the @gnu_indirect_function to glibc systems])],
2629 [case $enable_gnu_indirect_function in
2631 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2632 Valid choices are 'yes' and 'no'.]) ;;
2634 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2636 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2637 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2638 [Define if your system supports gnu indirect functions.])
2642 if test $in_tree_ld != yes ; then
2643 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2644 if echo "$ld_ver" | grep GNU > /dev/null; then
2645 if test x"$ld_is_gold" = xyes; then
2646 # GNU gold --version looks like this:
2648 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2650 # We extract the binutils version which is more familiar and specific
2651 # than the gold version.
2652 ld_vers=`echo $ld_ver | sed -n \
2653 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2655 # GNU ld --version looks like this:
2657 # GNU ld (GNU Binutils) 2.21.51.20110225
2658 ld_vers=`echo $ld_ver | sed -n \
2659 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2661 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2662 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2663 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2664 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2668 # Solaris 2 ld -V output looks like this for a regular version:
2670 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2672 # but test versions add stuff at the end:
2674 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2676 # In Solaris 11.4, this was changed to
2678 # ld: Solaris ELF Utilities: 11.4-1.3123
2680 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
2681 # numbers can be used in ld.so.1 feature checks even if a different
2682 # linker is configured.
2683 ld_ver=`$gcc_cv_ld -V 2>&1`
2684 if echo "$ld_ver" | $EGREP 'Solaris Link Editors|Solaris ELF Utilities' > /dev/null; then
2685 ld_vers=`echo $ld_ver | sed -n \
2686 -e 's,^.*: \(5\|1[0-9]\)\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\2,p'`
2687 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2688 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2696 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2697 [[if test $in_tree_ld = yes ; then
2699 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2700 && test $in_tree_ld_is_elf = yes; then
2701 gcc_cv_ld_hidden=yes
2704 gcc_cv_ld_hidden=yes
2705 if test x"$ld_is_gold" = xyes; then
2707 elif echo "$ld_ver" | grep GNU > /dev/null; then
2709 mmix-knuth-mmixware)
2710 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2714 if test 0"$ld_date" -lt 20020404; then
2715 if test -n "$ld_date"; then
2716 # If there was date string, but was earlier than 2002-04-04, fail
2718 elif test -z "$ld_vers"; then
2719 # If there was no date string nor ld version number, something is wrong
2722 test -z "$ld_vers_patch" && ld_vers_patch=0
2723 if test "$ld_vers_major" -lt 2; then
2725 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2726 gcc_cv_ld_hidden="no"
2727 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2735 gcc_cv_ld_hidden=yes
2738 # Darwin ld has some visibility support.
2739 gcc_cv_ld_hidden=yes
2741 hppa64*-*-hpux* | ia64*-*-hpux*)
2742 gcc_cv_ld_hidden=yes
2744 *-*-solaris2.1[0-9]*)
2745 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2746 # .symbolic was only added in Solaris 9 12/02.
2747 gcc_cv_ld_hidden=yes
2755 libgcc_visibility=no
2756 AC_SUBST(libgcc_visibility)
2757 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2758 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2759 libgcc_visibility=yes
2760 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2761 [Define if your assembler and linker support .hidden.])
2764 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2765 gcc_cv_ld_ro_rw_mix=unknown
2766 if test $in_tree_ld = yes ; then
2767 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2768 && test $in_tree_ld_is_elf = yes; then
2769 gcc_cv_ld_ro_rw_mix=read-write
2771 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2772 echo '.section myfoosect, "a"' > conftest1.s
2773 echo '.section myfoosect, "aw"' > conftest2.s
2774 echo '.byte 1' >> conftest2.s
2775 echo '.section myfoosect, "a"' > conftest3.s
2776 echo '.byte 0' >> conftest3.s
2777 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2778 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2779 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2780 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2781 conftest2.o conftest3.o > /dev/null 2>&1; then
2782 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2783 | sed -e '/myfoosect/!d' -e N`
2784 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2785 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2786 gcc_cv_ld_ro_rw_mix=read-only
2788 gcc_cv_ld_ro_rw_mix=read-write
2793 rm -f conftest.* conftest[123].*
2796 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2797 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2798 [Define if your linker links a mix of read-only
2799 and read-write sections into a read-write section.])
2801 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2803 gcc_AC_INITFINI_ARRAY
2805 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2806 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2814 [[# GAS versions before 2.11 do not support uleb128,
2815 # despite appearing to.
2816 # ??? There exists an elf-specific test that will crash
2817 # the assembler. Perhaps it's better to figure out whether
2818 # arbitrary sections are supported and try the test.
2819 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2820 if echo "$as_ver" | grep GNU > /dev/null; then
2821 as_vers=`echo $as_ver | sed -n \
2822 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2823 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2824 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2825 if test $as_major -eq 2 && test $as_minor -lt 11
2827 else gcc_cv_as_leb128=yes
2830 [AC_DEFINE(HAVE_AS_LEB128, 1,
2831 [Define if your assembler supports .sleb128 and .uleb128.])],
2832 [AC_DEFINE(HAVE_AS_LEB128, 0,
2833 [Define if your assembler supports .sleb128 and .uleb128.])])
2835 # Determine if an .eh_frame section is read-only.
2836 gcc_fn_eh_frame_ro () {
2837 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
2838 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2839 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
2842 # Check if we have assembler support for unwind directives.
2843 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2850 .cfi_escape 1, 2, 3, 4, 5
2854 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2855 # read-only and read-write sections, we need to make sure that the
2856 # assembler used emits read-write .eh_frame sections.
2857 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
2858 gcc_cv_as_cfi_directive=yes
2859 elif test "x$gcc_cv_objdump" = x; then
2860 # No objdump, err on the side of caution.
2861 gcc_cv_as_cfi_directive=no
2863 if test x$gas = xyes; then
2871 sparc*-*-solaris2.*)
2872 # On Solaris/SPARC, .eh_frame sections should always be read-write.
2873 if gcc_fn_eh_frame_ro $as_32_opt \
2874 || gcc_fn_eh_frame_ro $as_64_opt; then
2875 gcc_cv_as_cfi_directive=no
2877 gcc_cv_as_cfi_directive=yes
2880 i?86-*-solaris2.* | x86_64-*-solaris2.*)
2881 # On Solaris/x86, make sure that GCC and assembler agree on using
2882 # read-only .eh_frame sections for 64-bit.
2883 if gcc_fn_eh_frame_ro $as_32_opt; then
2884 gcc_cv_as_cfi_directive=no
2885 elif gcc_fn_eh_frame_ro $as_64_opt; then
2886 gcc_cv_as_cfi_directive=yes
2888 gcc_cv_as_cfi_directive=no
2895 gcc_cv_as_cfi_directive=yes
2898 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2899 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2903 .cfi_adjust_cfa_offset 64
2905 .cfi_adjust_cfa_offset 128
2908 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2909 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2910 gcc_cv_as_cfi_advance_working=yes
2914 # no objdump, err on the side of caution
2915 gcc_cv_as_cfi_advance_working=no
2917 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2918 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2919 [`if test $gcc_cv_as_cfi_directive = yes \
2920 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2921 [Define 0/1 if your assembler supports CFI directives.])
2923 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2924 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2925 gcc_cv_as_cfi_personality_directive, ,,
2928 .cfi_personality 0, symbol
2930 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2931 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
2932 [Define 0/1 if your assembler supports .cfi_personality.])
2934 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2935 gcc_cv_as_cfi_sections_directive, ,,
2937 .cfi_sections .debug_frame, .eh_frame
2941 win32 | pe | cygwin* | mingw32*)
2942 # Need to check that we generated the correct relocation for the
2943 # .debug_frame section. This was fixed for binutils 2.21.
2944 gcc_cv_as_cfi_sections_directive=no
2945 if test "x$gcc_cv_objdump" != x; then
2946 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2947 grep secrel > /dev/null; then
2948 gcc_cv_as_cfi_sections_directive=yes
2953 gcc_cv_as_cfi_sections_directive=yes
2956 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2957 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2958 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
2959 [Define 0/1 if your assembler supports .cfi_sections.])
2961 # GAS versions up to and including 2.11.0 may mis-optimize
2963 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2971 .section .eh_frame,"aw",@progbits
2973 .4byte .LECIE1-.LSCIE1
2987 .4byte .LEFDE1-.LASFDE1
2989 .4byte .LASFDE1-__FRAME_BEGIN__
2997 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2998 cat > conftest.lit <<EOF
2999 0000 10000000 00000000 017a0001 781a0004 .........z..x...
3000 0010 01000000 12000000 18000000 00000000 ................
3001 0020 08000000 04080000 0044 .........D @&t@
3003 cat > conftest.big <<EOF
3004 0000 00000010 00000000 017a0001 781a0004 .........z..x...
3005 0010 00000001 00000012 00000018 00000000 ................
3006 0020 00000008 04000000 0844 .........D @&t@
3008 # If the assembler didn't choke, and we can objdump,
3009 # and we got the correct data, then succeed.
3010 # The text in the here-document typically retains its unix-style line
3011 # endings, while the output of objdump will use host line endings.
3012 # Therefore, use diff -b for the comparisons.
3013 if test x$gcc_cv_objdump != x \
3014 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3015 | tail -3 > conftest.got \
3016 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3017 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3019 gcc_cv_as_eh_frame=yes
3020 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3021 gcc_cv_as_eh_frame=buggy
3023 # Uh oh, what do we do now?
3024 gcc_cv_as_eh_frame=no
3027 if test $gcc_cv_as_eh_frame = buggy; then
3028 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3029 [Define if your assembler mis-optimizes .eh_frame data.])
3032 # Test if the assembler supports the section flag 'e' or #exclude for
3033 # specifying an excluded section.
3034 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3035 [2,22,51], [--fatal-warnings],
3038 if test $gcc_cv_as_section_exclude_e = no; then
3040 # Solaris as uses #exclude instead.
3044 conftest_s='.section "foo1", #exclude'
3046 i?86-*-solaris2* | x86_64-*-solaris2*)
3047 conftest_s='.section foo1, #exclude'
3052 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,,
3056 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3057 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3058 [Define if your assembler supports specifying the exclude section flag.])
3060 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3061 [elf,2,12,0], [--fatal-warnings],
3062 [.section .rodata.str, "aMS", @progbits, 1])
3063 if test $gcc_cv_as_shf_merge = no; then
3064 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3065 [elf,2,12,0], [--fatal-warnings],
3066 [.section .rodata.str, "aMS", %progbits, 1])
3069 i?86-*-solaris2.10* | x86_64-*-solaris2.10*)
3070 # SHF_MERGE support in Solaris 10/x86 ld is broken.
3071 if test x"$gnu_ld" = xno; then
3072 gcc_cv_as_shf_merge=no
3076 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3077 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3078 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3080 gcc_cv_ld_aligned_shf_merge=yes
3082 # While Solaris 10/SPARC ld isn't affected, disable to avoid problems
3083 # relinking on Solaris 11 < 11.4.
3084 sparc*-*-solaris2.10*)
3085 if test x"$gnu_ld" = xno; then
3086 gcc_cv_ld_aligned_shf_merge=no
3089 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for
3091 sparc*-*-solaris2.11*)
3092 if test x"$gnu_ld" = xno \
3093 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then
3094 gcc_cv_ld_aligned_shf_merge=no
3098 AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE,
3099 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`],
3100 [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.])
3102 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
3103 [.stabs "gcc2_compiled.",60,0,0,0],,
3104 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
3105 [Define if your assembler supports .stabs.])])
3107 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3108 gcc_cv_as_comdat_group,
3109 [elf,2,16,0], [--fatal-warnings],
3110 [.section .text,"axG",@progbits,.foo,comdat])
3111 if test $gcc_cv_as_comdat_group = yes; then
3112 gcc_cv_as_comdat_group_percent=no
3113 gcc_cv_as_comdat_group_group=no
3115 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3116 gcc_cv_as_comdat_group_percent,
3117 [elf,2,16,0], [--fatal-warnings],
3118 [.section .text,"axG",%progbits,.foo,comdat])
3119 if test $gcc_cv_as_comdat_group_percent = yes; then
3120 gcc_cv_as_comdat_group_group=no
3123 # Sun as uses a completely different syntax.
3128 .group foo,".text%foo",#comdat
3129 .section ".text%foo", #alloc,#execinstr,#progbits
3134 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
3136 .group foo,.text%foo,#comdat
3137 .section .text%foo, "ax", @progbits
3143 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3144 gcc_cv_as_comdat_group_group,
3148 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3149 gcc_cv_as_comdat_group_group=no
3153 if test x"$ld_is_gold" = xyes; then
3155 elif test $in_tree_ld = yes ; then
3157 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3158 && test $in_tree_ld_is_elf = yes; then
3161 elif echo "$ld_ver" | grep GNU > /dev/null; then
3163 if test 0"$ld_date" -lt 20050308; then
3164 if test -n "$ld_date"; then
3165 # If there was date string, but was earlier than 2005-03-08, fail
3167 elif test "$ld_vers_major" -lt 2; then
3169 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3176 *-*-solaris2.1[1-9]*)
3178 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3179 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3182 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3183 # least ld version 1.2267.
3184 if test "$ld_vers_major" -gt 1; then
3186 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3188 elif test "$ld_vers_minor" -ge 2267; then
3193 # Assume linkers other than GNU ld don't support COMDAT group.
3199 # Allow overriding the automatic COMDAT group tests above.
3200 AC_ARG_ENABLE(comdat,
3201 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3202 [comdat_group="$enable_comdat"])
3203 if test $comdat_group = no; then
3204 gcc_cv_as_comdat_group=no
3205 gcc_cv_as_comdat_group_percent=no
3206 gcc_cv_as_comdat_group_group=no
3208 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3209 [`if test $gcc_cv_as_comdat_group = yes \
3210 || test $gcc_cv_as_comdat_group_percent = yes \
3211 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3212 [Define 0/1 if your assembler and linker support COMDAT groups.])
3214 # Restrict this test to Solaris/x86: other targets define this statically.
3216 i?86-*-solaris2* | x86_64-*-solaris2*)
3217 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3218 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3222 # Full support for hidden thunks in linkonce sections only appeared in
3223 # Solaris 11/OpenSolaris.
3224 *-*-solaris2.1[[1-9]]*)
3232 AC_MSG_RESULT($hidden_linkonce)
3233 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3234 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3235 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3239 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3244 .loc 1 1 0 is_stmt 1],,
3245 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3246 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3248 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3249 gcc_cv_as_discriminator,
3253 .loc 1 1 0 discriminator 1],,
3254 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3255 [Define if your assembler supports the .loc discriminator sub-directive.])])
3257 # Thread-local storage - the check is heavily parameterized.
3266 .section ".tdata","awT",@progbits
3269 ldq $27,__tls_get_addr($29) !literal!1
3270 lda $16,foo($29) !tlsgd!1
3271 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3272 ldq $27,__tls_get_addr($29) !literal!2
3273 lda $16,foo($29) !tlsldm!2
3274 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3275 ldq $1,foo($29) !gotdtprel
3276 ldah $2,foo($29) !dtprelhi
3277 lda $3,foo($2) !dtprello
3278 lda $4,foo($29) !dtprel
3279 ldq $1,foo($29) !gottprel
3280 ldah $2,foo($29) !tprelhi
3281 lda $3,foo($2) !tprello
3282 lda $4,foo($29) !tprel'
3285 tls_as_opt=--fatal-warnings
3289 add_s r0,r0, @foo@tpoff'
3293 cris-*-*|crisv32-*-*)
3295 .section ".tdata","awT",@progbits
3302 tls_as_opt=--fatal-warnings
3306 .section ".tdata","awT",@progbits
3318 .section ".tdata","awT",@progbits
3322 addil LT%foo-$tls_gdidx$,gp
3323 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3326 addil LT%foo-$tls_ldidx$,gp
3328 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3329 addil LR%foo-$tls_dtpoff$,%ret0
3330 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3332 addil LT%foo-$tls_ieoff$,gp
3333 ldw RT%foo-$tls_ieoff$(%r1),%t2
3336 addil LR%foo-$tls_leoff$,%t1
3337 ldo RR%foo-$tls_leoff$(%r1),%t2'
3340 tls_as_opt=--fatal-warnings
3344 .section ".tdata","awT",%progbits
3355 i[34567]86-*-* | x86_64-*-*)
3357 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3364 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3366 .section .tdata,"awt",@progbits'
3371 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3372 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3376 .section ".tdata","awT",@progbits'
3380 tls_as_opt="--fatal-warnings"
3384 conftest_s="$conftest_s
3388 leal foo@tlsgd(,%ebx,1), %eax
3389 leal foo@tlsldm(%ebx), %eax
3390 leal foo@dtpoff(%eax), %edx
3391 movl foo@gottpoff(%ebx), %eax
3392 subl foo@gottpoff(%ebx), %eax
3393 addl foo@gotntpoff(%ebx), %eax
3394 movl foo@indntpoff, %eax
3395 movl \$foo@tpoff, %eax
3396 subl \$foo@tpoff, %eax
3397 leal foo@ntpoff(%ecx), %eax"
3400 if test x$on_solaris = xyes; then
3402 yes) tls_as_opt="$tls_as_opt --64" ;;
3403 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3406 conftest_s="$conftest_s
3410 leaq foo@tlsgd(%rip), %rdi
3411 leaq foo@tlsld(%rip), %rdi
3412 leaq foo@dtpoff(%rax), %rdx
3413 movq foo@gottpoff(%rip), %rax
3414 movq \$foo@tpoff, %rax"
3420 .section ".tdata","awT",@progbits
3423 addl r16 = @ltoff(@dtpmod(foo#)), gp
3424 addl r17 = @ltoff(@dtprel(foo#)), gp
3425 addl r18 = @ltoff(@tprel(foo#)), gp
3426 addl r19 = @dtprel(foo#), gp
3427 adds r21 = @dtprel(foo#), r13
3428 movl r23 = @dtprel(foo#)
3429 addl r20 = @tprel(foo#), gp
3430 adds r22 = @tprel(foo#), r13
3431 movl r24 = @tprel(foo#)'
3434 tls_as_opt=--fatal-warnings
3438 .section .tdata,"awT",@progbits
3442 addik r5,r20,x@TLSGD
3443 addik r5,r20,x@TLSLDM'
3446 tls_as_opt='--fatal-warnings'
3450 .section .tdata,"awT",@progbits
3454 addiu $4, $28, %tlsgd(x)
3455 addiu $4, $28, %tlsldm(x)
3456 lui $4, %dtprel_hi(x)
3457 addiu $4, $4, %dtprel_lo(x)
3458 lw $4, %gottprel(x)($28)
3459 lui $4, %tprel_hi(x)
3460 addiu $4, $4, %tprel_lo(x)'
3463 tls_as_opt='-32 --fatal-warnings'
3467 .section .tdata,"awT",@progbits
3472 move.l x@TLSGD(%a5),%a0
3473 move.l x@TLSLDM(%a5),%a0
3474 move.l x@TLSLDO(%a5),%a0
3475 move.l x@TLSIE(%a5),%a0
3476 move.l x@TLSLE(%a5),%a0'
3479 tls_as_opt='--fatal-warnings'
3483 .section ".tdata","awT",@progbits'
3486 tls_as_opt="--fatal-warnings"
3490 .section ".tdata","awT",%progbits
3494 add x0, x0, #:tlsgd_lo12:x
3499 tls_as_opt='--fatal-warnings'
3503 .section ".tdata","awT",@progbits
3506 l.movhi r3, tpoffha(foo)
3508 l.lwz r4, tpofflo(foo)(r3)'
3511 tls_as_opt=--fatal-warnings
3515 .extern __get_tpointer
3533 .section ".tdata","awT",@progbits
3541 addi 3,2,ld0@got@tlsgd
3547 addi 3,2,x1@got@tlsld
3553 addis 9,3,x2@dtprel@ha
3554 addi 9,9,x2@dtprel@l
3557 ld 9,x3@got@dtprel(2)
3563 tls_as_opt="-a64 --fatal-warnings"
3567 .section ".tdata","awT",@progbits
3575 addi 3,31,ld0@got@tlsgd
3577 addi 3,31,x1@got@tlsld
3580 addis 9,3,x2@dtprel@ha
3581 addi 9,9,x2@dtprel@l
3582 lwz 9,x3@got@tprel(31)
3585 addis 9,2,x2@tprel@ha
3586 addi 9,9,x2@tprel@l'
3589 tls_as_opt="-a32 --fatal-warnings"
3593 .section .tdata,"awT",@progbits
3597 call __tls_get_addr'
3600 tls_as_opt='--fatal-warnings'
3604 .section ".tdata","awT",@progbits
3613 l %r1,foo@GOTNTPOFF(%r12)
3614 l %r1,0(%r1):tls_load:foo
3615 bas %r14,0(%r1,%r13):tls_gdcall:foo
3616 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3619 tls_as_opt="-m31 --fatal-warnings"
3623 .section ".tdata","awT",@progbits
3631 lg %r1,foo@GOTNTPOFF(%r12)
3632 larl %r1,foo@INDNTPOFF
3633 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3634 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3637 tls_as_opt="-m64 -Aesame --fatal-warnings"
3639 sh-*-* | sh[123456789lbe]*-*-*)
3641 .section ".tdata","awT",@progbits
3651 tls_as_opt=--fatal-warnings
3655 sparc*-sun-solaris2.*)
3662 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3664 .section ".tdata",#alloc,#write,#tls'
3669 .section ".tdata","awT",@progbits'
3672 tls_as_opt="-32 --fatal-warnings"
3674 conftest_s="$conftest_s
3677 sethi %tgd_hi22(foo), %o0
3678 add %o0, %tgd_lo10(foo), %o1
3679 add %l7, %o1, %o0, %tgd_add(foo)
3680 call __tls_get_addr, %tgd_call(foo)
3681 sethi %tldm_hi22(foo), %l1
3682 add %l1, %tldm_lo10(foo), %l2
3683 add %l7, %l2, %o0, %tldm_add(foo)
3684 call __tls_get_addr, %tldm_call(foo)
3685 sethi %tldo_hix22(foo), %l3
3686 xor %l3, %tldo_lox10(foo), %l4
3687 add %o0, %l4, %l5, %tldo_add(foo)
3688 sethi %tie_hi22(foo), %o3
3689 add %o3, %tie_lo10(foo), %o3
3690 ld [%l7 + %o3], %o2, %tie_ld(foo)
3691 add %g7, %o2, %o4, %tie_add(foo)
3692 sethi %tle_hix22(foo), %l1
3693 xor %l1, %tle_lox10(foo), %o5
3694 ld [%g7 + %o5], %o1"
3698 .section ".tdata","awT",@progbits
3701 addli r0, zero, tls_gd(foo)
3702 auli r0, zero, tls_gd_ha16(foo)
3703 addli r0, r0, tls_gd_lo16(foo)
3705 addli r0, zero, tls_ie(foo)
3706 auli r0, r0, tls_ie_ha16(foo)
3707 addli r0, r0, tls_ie_lo16(foo)'
3710 tls_as_opt="--fatal-warnings"
3714 .section ".tdata","awT",@progbits
3717 shl16insli r0, zero, hw0_last_tls_gd(foo)
3718 shl16insli r0, zero, hw1_last_tls_gd(foo)
3719 shl16insli r0, r0, hw0_tls_gd(foo)
3721 shl16insli r0, zero, hw1_last_tls_ie(foo)
3722 shl16insli r0, r0, hw0_tls_ie(foo)'
3725 tls_as_opt="--fatal-warnings"
3729 .section ".tdata","awT",@progbits
3732 movi a8, foo@TLSFUNC
3733 movi a10, foo@TLSARG
3734 callx8.tls a8, foo@TLSCALL'
3741 if test "x$enable_tls" = xno ; then
3742 : # TLS explicitly disabled.
3743 elif test "x$enable_tls" = xyes ; then
3744 set_have_as_tls=yes # TLS explicitly enabled.
3745 elif test -z "$tls_first_major"; then
3746 : # If we don't have a check, assume no support.
3748 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3749 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3750 [set_have_as_tls=yes])
3752 if test $set_have_as_tls = yes ; then
3753 AC_DEFINE(HAVE_AS_TLS, 1,
3754 [Define if your assembler and linker support thread-local storage.])
3757 # Target-specific assembler checks.
3759 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3760 gcc_cv_ld_static_dynamic=no
3761 gcc_cv_ld_static_option='-Bstatic'
3762 gcc_cv_ld_dynamic_option='-Bdynamic'
3763 if test $in_tree_ld = yes ; then
3764 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3765 gcc_cv_ld_static_dynamic=yes
3767 elif test x$gcc_cv_ld != x; then
3768 # Check if linker supports -Bstatic/-Bdynamic option
3769 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
3770 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
3771 gcc_cv_ld_static_dynamic=yes
3774 # AIX ld uses -b flags
3775 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3776 gcc_cv_ld_static_dynamic=yes
3777 gcc_cv_ld_static_option="-bstatic"
3778 gcc_cv_ld_dynamic_option="-bdynamic"
3780 # HP-UX ld uses -a flags to select between shared and archive.
3782 if test x"$gnu_ld" = xno; then
3783 gcc_cv_ld_static_dynamic=yes
3784 gcc_cv_ld_static_option="-aarchive_shared"
3785 gcc_cv_ld_dynamic_option="-adefault"
3788 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3790 gcc_cv_ld_static_dynamic=yes
3795 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3796 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3797 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3798 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3799 [Define to the linker option to disable use of shared objects.])
3800 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3801 [Define to the linker option to enable use of shared objects.])
3803 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3805 AC_MSG_CHECKING(linker --version-script option)
3806 gcc_cv_ld_version_script=no
3807 ld_version_script_option=''
3808 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3809 gcc_cv_ld_version_script=yes
3810 ld_version_script_option='--version-script'
3811 elif test x$gcc_cv_ld != x; then
3813 # Solaris 2 ld always supports -M. It also supports a subset of
3814 # --version-script since Solaris 11.4, but requires
3815 # -z gnu-version-script-compat to activate.
3817 gcc_cv_ld_version_script=yes
3818 ld_version_script_option='-M'
3822 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3823 AC_MSG_RESULT($gcc_cv_ld_version_script)
3824 AC_SUBST(ld_version_script_option)
3826 AC_MSG_CHECKING(linker soname option)
3828 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3829 gcc_cv_ld_soname=yes
3830 ld_soname_option='-soname'
3831 elif test x$gcc_cv_ld != x; then
3834 gcc_cv_ld_soname=yes
3835 ld_soname_option='-install_name'
3837 # Solaris 2 ld always supports -h. It also supports --soname for GNU
3838 # ld compatiblity since some Solaris 10 update.
3840 gcc_cv_ld_soname=yes
3841 ld_soname_option='-h'
3845 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3846 AC_MSG_RESULT($gcc_cv_ld_soname)
3847 AC_SUBST(ld_soname_option)
3849 if test x"$demangler_in_ld" = xyes; then
3850 AC_MSG_CHECKING(linker --demangle support)
3851 gcc_cv_ld_demangle=no
3852 if test $in_tree_ld = yes; then
3853 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3854 gcc_cv_ld_demangle=yes
3856 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3857 # Check if the GNU linker supports --demangle option
3858 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
3859 gcc_cv_ld_demangle=yes
3862 if test x"$gcc_cv_ld_demangle" = xyes; then
3863 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3864 [Define if your linker supports --demangle option.])
3866 AC_MSG_RESULT($gcc_cv_ld_demangle)
3869 AC_MSG_CHECKING(linker plugin support)
3871 if test -f liblto_plugin.la; then
3872 save_ld_ver="$ld_ver"
3873 save_ld_vers_major="$ld_vers_major"
3874 save_ld_vers_minor="$ld_vers_minor"
3875 save_ld_is_gold="$ld_is_gold"
3879 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3881 # FIXME: ld_is_gold?
3882 ld_vers_major="$gcc_cv_gld_major_version"
3883 ld_vers_minor="$gcc_cv_gld_minor_version"
3885 # Determine plugin linker version.
3886 # FIXME: Partial duplicate from above, generalize.
3888 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3889 if echo "$ld_ver" | grep GNU > /dev/null; then
3890 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3892 ld_vers=`echo $ld_ver | sed -n \
3893 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3895 ld_vers=`echo $ld_ver | sed -n \
3896 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3898 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3899 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3904 # Determine plugin support.
3905 if echo "$ld_ver" | grep GNU > /dev/null; then
3906 # Require GNU ld or gold 2.21+ for plugin support by default.
3907 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3909 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3910 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3915 ld_ver="$save_ld_ver"
3916 ld_vers_major="$save_ld_vers_major"
3917 ld_vers_minor="$save_ld_vers_minor"
3918 ld_is_gold="$save_ld_is_gold"
3920 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3921 [Define to the level of your linker's plugin support.])
3922 AC_MSG_RESULT($gcc_cv_lto_plugin)
3924 # Target OS-specific assembler checks.
3926 case "$target_os" in
3928 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
3929 gcc_cv_as_mmacosx_version_min,,
3930 [-mmacosx-version-min=10.1], [.text],,
3931 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
3932 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
3936 # Target CPU-specific assembler checks.
3940 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3941 [-mabi=lp64], [.text],,,)
3942 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3943 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3944 [Define if your assembler supports the -mabi option.])
3946 if test x$with_abi = xilp32; then
3947 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3948 Upgrade the Assembler.])
3950 if test x"$with_multilib_list" = xdefault; then
3951 TM_MULTILIB_CONFIG=lp64
3953 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3954 for aarch64_multilib in ${aarch64_multilibs}; do
3955 case ${aarch64_multilib} in
3957 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3958 Upgrade the Assembler.])
3966 # Check if we have binutils support for relocations types needed by -fpic
3967 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3970 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3971 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3972 [Define if your assembler supports relocs needed by -fpic.])])
3973 # Enable Branch Target Identification Mechanism and Return Address
3974 # Signing by default.
3975 AC_ARG_ENABLE(standard-branch-protection,
3977 AS_HELP_STRING([--enable-standard-branch-protection],
3978 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
3979 AS_HELP_STRING([--disable-standard-branch-protection],
3980 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
3985 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1"
3990 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
3991 Valid choices are 'yes' and 'no'.])
3996 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3997 AC_ARG_ENABLE(fix-cortex-a53-835769,
3999 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
4000 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4001 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
4002 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4007 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4012 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4013 Valid choices are 'yes' and 'no'.])
4019 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4020 AC_ARG_ENABLE(fix-cortex-a53-843419,
4022 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4023 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4024 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4025 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4030 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4035 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4036 Valid choices are 'yes' and 'no'.])
4044 # All TARGET_ABI_OSF targets.
4045 alpha*-*-linux* | alpha*-*-*bsd*)
4046 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4047 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
4050 extbl $3, $2, $3 !lituse_bytoff!1
4051 ldq $2, a($29) !literal!1
4052 ldq $4, b($29) !literal!2
4053 ldq_u $3, 0($2) !lituse_base!1
4054 ldq $27, f($29) !literal!5
4055 jsr $26, ($27), f !lituse_jsr!5
4056 ldah $29, 0($26) !gpdisp!3
4057 lda $0, c($29) !gprel
4058 ldah $1, d($29) !gprelhigh
4059 lda $1, d($1) !gprellow
4060 lda $29, 0($29) !gpdisp!3],,
4061 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4062 [Define if your assembler supports explicit relocations.])])
4063 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4064 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
4067 ldq $27, a($29) !literal!1
4068 jsr $26, ($27), a !lituse_jsrdirect!1],,
4069 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4070 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4074 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
4075 [--mlink-relax], [.text],,
4076 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4077 [Define if your avr assembler supports --mlink-relax option.])])
4079 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
4081 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4082 [Define if your avr assembler supports -mrmw option.])])
4084 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4085 gcc_cv_as_avr_mgccisr,,
4091 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4092 [Define if your avr assembler supports -mgcc-isr option.])])
4094 # Check how default linker description file implements .rodata for
4095 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4096 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4097 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4098 cat > conftest.s <<EOF
4099 .section .rodata,"a",@progbits
4101 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4106 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4107 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4108 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4109 if test -s conftest.nm
4111 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4113 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4114 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4116 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4117 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4118 cat conftest.nm >&AS_MESSAGE_LOG_FD
4119 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4120 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4123 AC_MSG_RESULT(test failed)
4124 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4125 cat conftest.s >&AS_MESSAGE_LOG_FD
4126 AC_MSG_WARN([[see `config.log' for details]])
4128 rm -f conftest.s conftest.o conftest.elf conftest.nm
4132 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4133 gcc_cv_as_cris_no_mul_bug,[2,15,91],
4134 [-no-mul-bug-abort], [.text],,
4135 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4136 [Define if your assembler supports the -no-mul-bug-abort option.])])
4140 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
4142 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4143 [Define if your assembler supports -relax option.])])
4145 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4146 gcc_cv_as_sparc_gotdata_op,,
4153 sethi %gdop_hix22(foo), %g1
4154 xor %g1, %gdop_lox10(foo), %g1
4155 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4156 [if test x$gcc_cv_ld != x \
4157 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4158 if test x$gcc_cv_objdump != x; then
4159 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4160 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4161 gcc_cv_as_sparc_gotdata_op=no
4163 gcc_cv_as_sparc_gotdata_op=yes
4168 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4169 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4171 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4172 gcc_cv_as_sparc_ua_pcrel,,
4180 .uaword %r_disp32(foo)],
4181 [if test x$gcc_cv_ld != x \
4182 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4183 gcc_cv_as_sparc_ua_pcrel=yes
4186 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4187 [Define if your assembler and linker support unaligned PC relative relocs.])
4189 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4190 gcc_cv_as_sparc_ua_pcrel_hidden,,
4195 .uaword %r_disp32(foo)
4196 .byte 0x32, 0x33, 0x34
4201 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4202 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4203 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4204 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4205 if $gcc_cv_objdump -R conftest 2> /dev/null \
4206 | grep 'DISP32' > /dev/null 2>&1; then
4209 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4213 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4214 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4215 ]) # unaligned pcrel relocs
4217 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4218 gcc_cv_as_sparc_offsetable_lo10,,
4221 or %g1, %lo(ab) + 12, %g1
4222 or %g1, %lo(ab + 12), %g1],
4223 [if test x$gcc_cv_objdump != x \
4224 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4225 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4226 gcc_cv_as_sparc_offsetable_lo10=yes
4228 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4229 [Define if your assembler supports offsetable %lo().])])
4231 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4232 gcc_cv_as_sparc_fmaf,,
4235 .register %g2, #scratch
4236 .register %g3, #scratch
4238 fmaddd %f0, %f2, %f4, %f6
4239 addxccc %g1, %g2, %g3
4240 fsrl32 %f2, %f4, %f8
4241 fnaddd %f10, %f12, %f14],,
4242 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4243 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4245 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4246 gcc_cv_as_sparc_sparc4,,
4249 .register %g2, #scratch
4250 .register %g3, #scratch
4253 1: cwbneg %g2, %g3, 1f
4256 aes_kexpand0 %f4, %f6, %f8
4257 des_round %f38, %f40, %f42, %f44
4258 camellia_f %f54, %f56, %f58, %f60
4259 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4260 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4261 [Define if your assembler supports SPARC4 instructions.])])
4263 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4264 gcc_cv_as_sparc_sparc5,,
4267 .register %g2, #scratch
4268 .register %g3, #scratch
4271 fpadd8 %f0, %f2, %f4],,
4272 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4273 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4275 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4276 gcc_cv_as_sparc_sparc6,,
4279 .register %g2, #scratch
4280 .register %g3, #scratch
4283 fpsll64x %f0, %f2, %f4],,
4284 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4285 [Define if your assembler supports SPARC6 instructions.])])
4287 gcc_GAS_CHECK_FEATURE([LEON instructions],
4288 gcc_cv_as_sparc_leon,,
4291 .register %g2, #scratch
4292 .register %g3, #scratch
4296 casa [[%g2]] 0xb, %g3, %g1],,
4297 [AC_DEFINE(HAVE_AS_LEON, 1,
4298 [Define if your assembler supports LEON instructions.])])
4302 i[34567]86-*-* | x86_64-*-*)
4306 # Full C++ conformance when using a shared libstdc++-v3 requires some
4307 # support from the Cygwin DLL, which in more recent versions exports
4308 # wrappers to aid in interposing and redirecting operators new, delete,
4309 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4310 # are configuring for a version of Cygwin that exports the wrappers.
4311 if test x$host = x$target && test x$host_cpu = xi686; then
4312 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4314 # Can't check presence of libc functions during cross-compile, so
4315 # we just have to assume we're building for an up-to-date target.
4316 gcc_ac_cygwin_dll_wrappers=yes
4318 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4319 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4320 [Define if you want to generate code by default that assumes that the
4321 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4324 cygwin* | pe | mingw32*)
4325 # Recent binutils allows the three-operand form of ".comm" on PE. This
4326 # definition is used unconditionally to initialise the default state of
4327 # the target option variable that governs usage of the feature.
4328 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4329 [2,19,52],,[.comm foo,1,32])
4330 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4331 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4332 [Define if your assembler supports specifying the alignment
4333 of objects allocated using the GAS .comm command.])
4334 # Used for DWARF 2 in PE
4335 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4336 gcc_cv_as_ix86_pe_secrel32,
4342 [if test x$gcc_cv_ld != x \
4343 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4344 gcc_cv_as_ix86_pe_secrel32=yes
4347 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4348 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4349 # Test if the assembler supports the extended form of the .section
4350 # directive that specifies section alignment. LTO support uses this,
4351 # but normally only after installation, so we warn but don't fail the
4352 # configure if LTO is enabled but the assembler does not support it.
4353 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4354 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4355 if test x$gcc_cv_as_section_has_align != xyes; then
4356 case ",$enable_languages," in
4358 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4365 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,,
4366 [-xbrace_comment=no], [.text],,
4367 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4368 [Define if your assembler supports -xbrace_comment option.])])
4370 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4371 gcc_cv_as_ix86_filds,,,
4372 [filds (%ebp); fists (%ebp)],,
4373 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4374 [Define if your assembler uses filds and fists mnemonics.])])
4376 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4377 gcc_cv_as_ix86_fildq,,,
4378 [fildq (%ebp); fistpq (%ebp)],,
4379 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4380 [Define if your assembler uses fildq and fistq mnemonics.])])
4382 gcc_GAS_CHECK_FEATURE([cmov syntax],
4383 gcc_cv_as_ix86_cmov_sun_syntax,,,
4384 [cmovl.l %edx, %eax],,
4385 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4386 [Define if your assembler supports the Sun syntax for cmov.])])
4388 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4389 gcc_cv_as_ix86_ffreep,,,
4391 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4392 [Define if your assembler supports the ffreep mnemonic.])])
4394 gcc_GAS_CHECK_FEATURE([.quad directive],
4395 gcc_cv_as_ix86_quad,,,
4397 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4398 [Define if your assembler supports the .quad directive.])])
4400 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4401 gcc_cv_as_ix86_sahf,,,
4404 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4405 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4407 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4408 gcc_cv_as_ix86_interunit_movq,,,
4412 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4413 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4414 [Define if your assembler supports interunit movq mnemonic.])
4416 gcc_GAS_CHECK_FEATURE([hle prefixes],
4417 gcc_cv_as_ix86_hle,,,
4418 [lock xacquire cmpxchg %esi, (%ecx)],,
4419 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4420 [Define if your assembler supports HLE prefixes.])])
4422 gcc_GAS_CHECK_FEATURE([swap suffix],
4423 gcc_cv_as_ix86_swap,,,
4424 [movl.s %esp, %ebp],,
4425 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4426 [Define if your assembler supports the swap suffix.])])
4428 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4429 gcc_cv_as_ix86_diff_sect_delta,,,
4437 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4438 [Define if your assembler supports the subtraction of symbols in different sections.])])
4440 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4441 gcc_cv_as_ix86_rep_lock_prefix,,,
4447 lock addl %edi, (%eax,%esi)
4448 lock orl $0, (%esp)],,
4449 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4450 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4452 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4453 gcc_cv_as_ix86_ud2,,,
4455 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4456 [Define if your assembler supports the 'ud2' mnemonic.])])
4458 # Enforce 32-bit output with gas and gld.
4459 if test x$gas = xyes; then
4460 as_ix86_gas_32_opt="--32"
4462 if echo "$ld_ver" | grep GNU > /dev/null; then
4463 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4464 ld_ix86_gld_32_opt="-melf_i386_sol2"
4466 ld_ix86_gld_32_opt="-melf_i386"
4470 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4471 gcc_cv_as_ix86_tlsgdplt,,
4472 [$as_ix86_gas_32_opt],
4473 [call tls_gd@tlsgdplt],
4474 [if test x$gcc_cv_ld != x \
4475 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4476 gcc_cv_as_ix86_tlsgdplt=yes
4479 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4480 [Define if your assembler and linker support @tlsgdplt.])])
4483 .section .tdata,"aw'$tls_section_flag'",@progbits
4485 .section .text,"ax",@progbits
4486 call tls_ld@tlsldmplt'
4488 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4489 gcc_cv_as_ix86_tlsldmplt,,
4490 [$as_ix86_gas_32_opt],
4492 [if test x$gcc_cv_ld != x \
4493 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4494 gcc_cv_as_ix86_tlsldmplt=yes
4497 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4498 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4499 [Define to 1 if your assembler and linker support @tlsldmplt.])
4502 .section .text,"ax",@progbits
4504 .type _start, @function
4506 leal value@tlsldm(%ebx), %eax
4507 call ___tls_get_addr@plt
4509 .section .tdata,"aw'$tls_section_flag'",@progbits
4510 .type value, @object
4512 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4513 gcc_cv_as_ix86_tlsldm,,
4514 [$as_ix86_gas_32_opt],
4516 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4517 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4518 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4519 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4520 gcc_cv_as_ix86_tlsldm=yes
4524 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4525 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4526 [Define to 1 if your assembler and linker support @tlsldm.])
4537 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4538 gcc_cv_as_ix86_got32x,,
4539 [$as_ix86_gas_32_opt],
4541 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4542 && test x$gcc_cv_readelf != x \
4543 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4544 | grep R_386_GOT32X > /dev/null 2>&1 \
4545 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4546 if $gcc_cv_objdump -dw conftest 2>&1 \
4547 | grep 0xffffff > /dev/null 2>&1; then
4548 gcc_cv_as_ix86_got32x=no
4550 gcc_cv_as_ix86_got32x=yes
4554 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4555 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4556 [Define 0/1 if your assembler and linker support @GOT.])
4558 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4559 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4560 [$as_ix86_gas_32_opt],
4566 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4567 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4568 [Define true if the assembler supports '.long foo@GOTOFF'.])
4571 .section .text,"ax",@progbits
4573 .type _start, @function
4575 leal ld@tlsldm(%ecx), %eax
4576 call *___tls_get_addr@GOT(%ecx)
4577 leal gd@tlsgd(%ecx), %eax
4578 call *___tls_get_addr@GOT(%ecx)
4580 .section .tdata,"aw'$tls_section_flag'",@progbits
4588 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4589 gcc_cv_as_ix86_tls_get_addr_via_got,,
4590 [$as_ix86_gas_32_opt],
4592 [if test x$gcc_cv_ld != x \
4593 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4594 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4597 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4598 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4599 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4603 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4604 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4606 addl r15 = @ltoffx(x#), gp
4608 ld8.mov r16 = [[r15]], x#
4610 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4611 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4619 gcc_GAS_CHECK_FEATURE([.machine directive support],
4620 gcc_cv_as_machine_directive,,,
4621 [ .machine ppc7400])
4622 if test x$gcc_cv_as_machine_directive != xyes; then
4623 echo "*** This target requires an assembler supporting \".machine\"" >&2
4624 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4625 test x$build = x$target && exit 1
4631 *-*-aix*) conftest_s=' .machine "pwr5"
4634 *-*-darwin*) conftest_s=' .text
4636 *) conftest_s=' .machine power4
4641 gcc_GAS_CHECK_FEATURE([mfcr field support],
4642 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4644 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4645 [Define if your assembler supports mfcr field.])])
4648 *-*-aix*) conftest_s=' .csect .text[[PR]]
4650 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4654 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4655 *) conftest_s=' .text
4657 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4660 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4661 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4663 [AC_DEFINE(HAVE_AS_REL16, 1,
4664 [Define if your assembler supports R_PPC_REL16 relocs.])])
4667 *-*-aix*) conftest_s=' .machine "pwr7"
4670 *) conftest_s=' .machine power7
4675 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4676 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4678 [AC_DEFINE(HAVE_AS_VSX, 1,
4679 [Define if your assembler supports VSX instructions.])])
4681 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4682 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4683 [.gnu_attribute 4,1],,
4684 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4685 [Define if your assembler supports .gnu_attribute.])])
4687 gcc_GAS_CHECK_FEATURE([tls marker support],
4688 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4689 [ bl __tls_get_addr(x@tlsgd)],,
4690 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4691 [Define if your assembler supports arg info for __tls_get_addr.])])
4693 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4694 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4695 [ .reloc .,R_PPC64_ENTRY; nop],,
4696 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4697 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4699 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
4700 gcc_cv_as_powerpc_pltseq_markers, [2,31,0],-a32 --fatal-warnings,
4701 [ .reloc .,R_PPC_PLTSEQ; nop],,
4702 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
4703 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
4707 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4708 gcc_cv_as_aix_ref, [2,21,0],,
4709 [ .csect stuff[[rw]]
4715 [AC_DEFINE(HAVE_AS_REF, 1,
4716 [Define if your assembler supports .ref])])
4718 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4719 gcc_cv_as_aix_dwloc, [2,21,0],,
4724 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4725 [Define if your assembler supports AIX debug frame section label reference.])])
4731 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4732 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4733 [ lw $4,%gp_rel(foo)($4)],,
4734 [if test x$target_cpu_default = x
4735 then target_cpu_default=MASK_EXPLICIT_RELOCS
4736 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4739 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4740 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4741 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4742 [Define if the assembler understands -mno-shared.])])
4744 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4745 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4746 [.gnu_attribute 4,1],,
4747 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4748 [Define if your assembler supports .gnu_attribute.])])
4750 gcc_GAS_CHECK_FEATURE([.module support],
4751 gcc_cv_as_mips_dot_module,,[-32],
4754 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4755 [Define if your assembler supports .module.])])
4756 if test x$gcc_cv_as_mips_dot_module = xno \
4757 && test x$with_fp_32 != x; then
4759 [Requesting --with-fp-32= requires assembler support for .module.])
4762 gcc_GAS_CHECK_FEATURE([.micromips support],
4763 gcc_cv_as_micromips_support,,[--fatal-warnings],
4765 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4766 [Define if your assembler supports the .set micromips directive])])
4768 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4769 gcc_cv_as_mips_dtprelword, [2,18,0],,
4770 [.section .tdata,"awT",@progbits
4774 .dtprelword x+0x8000],,
4775 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4776 [Define if your assembler supports .dtprelword.])])
4778 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4779 gcc_cv_as_mips_dspr1_mult,,,
4789 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4790 [Define if your assembler supports DSPR1 mult.])])
4792 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4793 gcc_cv_as_ld_jalr_reloc=no
4794 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4795 if test $in_tree_ld = yes ; then
4796 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4797 && test $in_tree_ld_is_elf = yes; then
4798 gcc_cv_as_ld_jalr_reloc=yes
4800 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4801 echo ' .ent x' > conftest.s
4802 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4803 echo ' lw $25,%call16(y)($28)' >> conftest.s
4804 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4805 echo '1: jalr $25' >> conftest.s
4806 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4807 echo '1: jalr $25' >> conftest.s
4808 echo ' .end x' >> conftest.s
4809 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4810 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4811 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4812 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4813 gcc_cv_as_ld_jalr_reloc=yes
4819 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4820 if test x$target_cpu_default = x; then
4821 target_cpu_default=MASK_RELAX_PIC_CALLS
4823 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4826 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4828 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4829 [gcc_cv_ld_mips_personality_relaxation],
4830 [gcc_cv_ld_mips_personality_relaxation=no
4831 if test $in_tree_ld = yes ; then
4832 if test "$gcc_cv_gld_major_version" -eq 2 \
4833 -a "$gcc_cv_gld_minor_version" -ge 21 \
4834 -o "$gcc_cv_gld_major_version" -gt 2; then
4835 gcc_cv_ld_mips_personality_relaxation=yes
4837 elif test x$gcc_cv_as != x \
4838 -a x$gcc_cv_ld != x \
4839 -a x$gcc_cv_readelf != x ; then
4840 cat > conftest.s <<EOF
4842 .cfi_personality 0x80,indirect_ptr
4849 .section .data,"aw",@progbits
4853 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4854 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4855 if $gcc_cv_readelf -d conftest 2>&1 \
4856 | grep TEXTREL > /dev/null 2>&1; then
4858 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4859 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4862 gcc_cv_ld_mips_personality_relaxation=yes
4866 rm -f conftest.s conftest.o conftest])
4867 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4868 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4869 [Define if your linker can relax absolute .eh_frame personality
4870 pointers into PC-relative form.])
4873 gcc_GAS_CHECK_FEATURE([-mnan= support],
4874 gcc_cv_as_mips_nan,,
4876 [AC_DEFINE(HAVE_AS_NAN, 1,
4877 [Define if the assembler understands -mnan=.])])
4878 if test x$gcc_cv_as_mips_nan = xno \
4879 && test x$with_nan != x; then
4881 [Requesting --with-nan= requires assembler support for -mnan=])
4885 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4886 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4887 [.gnu_attribute 8,1],,
4888 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4889 [Define if your assembler supports .gnu_attribute.])])
4890 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4891 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4896 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4897 [Define if your assembler supports .machine and .machinemode.])])
4898 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4899 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4900 [ .machine z13+vx ],,
4901 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4902 [Define if your assembler supports architecture modifiers.])])
4903 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
4904 gcc_cv_as_s390_vector_loadstore_alignment_hints, [2,31,0],,
4905 [ vl %v24,0(%r15),3 ],,
4906 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
4907 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
4912 # Mips and HP-UX need the GNU assembler.
4913 # Linux on IA64 might be able to use the Intel assembler.
4916 mips*-*-* | *-*-hpux* )
4917 if test x$gas_flag = xyes \
4918 || test x"$host" != x"$build" \
4919 || test ! -x "$gcc_cv_as" \
4920 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4923 echo "*** This configuration requires the GNU assembler" >&2
4929 # ??? Not all targets support dwarf2 debug_line, even within a version
4930 # of gas. Moreover, we need to emit a valid instruction to trigger any
4931 # info to the output file. So, as supported targets are added to gas 2.11,
4932 # add some instruction here to (also) show we expect this might work.
4933 # ??? Once 2.11 is released, probably need to add first known working
4934 # version to the per-target configury.
4936 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \
4937 | microblaze | mips | nios2 | pa | riscv | rs6000 | score | sparc | spu \
4938 | tilegx | tilepro | visium | xstormy16 | xtensa)
4948 if test x"$insn" != x; then
4950 .file 1 \"conftest.s\"
4953 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4954 gcc_cv_as_dwarf2_debug_line,
4955 [elf,2,11,0],, [$conftest_s],
4956 [if test x$gcc_cv_objdump != x \
4957 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4958 | grep debug_line > /dev/null 2>&1; then
4959 gcc_cv_as_dwarf2_debug_line=yes
4960 elif test x$gcc_cv_otool != x \
4961 && $gcc_cv_otool -l conftest.o 2> /dev/null \
4962 | grep debug_line > /dev/null 2>&1; then
4963 gcc_cv_as_dwarf2_debug_line=yes
4966 # The .debug_line file table must be in the exact order that
4967 # we specified the files, since these indices are also used
4968 # by DW_AT_decl_file. Approximate this test by testing if
4969 # the assembler bitches if the same index is assigned twice.
4970 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4971 gcc_cv_as_dwarf2_file_buggy,,,
4975 if test $gcc_cv_as_dwarf2_debug_line = yes \
4976 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4977 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4978 [Define if your assembler supports dwarf2 .file/.loc directives,
4979 and preserves file table indices exactly as given.])
4981 if test $gcc_cv_as_leb128 = yes; then
4983 .file 1 \"conftest.s\"
4984 .loc 1 3 0 view .LVU1
4990 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
4991 gcc_cv_as_dwarf2_debug_view,
4992 [elf,2,27,0],,[$conftest_s],,
4993 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
4994 [Define if your assembler supports views in dwarf2 .loc directives.])])
4998 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4999 gcc_cv_as_gdwarf2_flag,
5000 [elf,2,11,0], [--gdwarf2], [$insn],,
5001 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5002 [Define if your assembler supports the --gdwarf2 option.])])
5004 gcc_GAS_CHECK_FEATURE([--gstabs option],
5005 gcc_cv_as_gstabs_flag,
5006 [elf,2,11,0], [--gstabs], [$insn],,
5007 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
5008 [Define if your assembler supports the --gstabs option.])])
5010 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5011 gcc_cv_as_debug_prefix_map_flag,
5012 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
5013 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5014 [Define if your assembler supports the --debug-prefix-map option.])])
5017 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5018 gcc_cv_as_compress_debug,,,,
5019 [# gas compiled without zlib cannot compress debug sections and warns
5020 # about it, but still exits successfully. So check for this, too.
5021 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5023 gcc_cv_as_compress_debug=0
5024 # Since binutils 2.26, gas supports --compress-debug-sections=type,
5025 # defaulting to the ELF gABI format.
5026 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
5028 gcc_cv_as_compress_debug=2
5029 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5030 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5031 # Before binutils 2.26, gas only supported --compress-debug-options and
5032 # emitted the traditional GNU format.
5033 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
5035 gcc_cv_as_compress_debug=1
5036 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5037 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5039 gcc_cv_as_compress_debug=0
5041 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5042 [Define to the level of your assembler's compressed debug section support.])
5043 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5044 [Define to the assembler option to enable compressed debug sections.])
5045 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5046 [Define to the assembler option to disable compressed debug sections.])
5048 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
5051 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5052 [Define if your assembler supports .lcomm with an alignment field.])])
5054 if test x$with_sysroot = x && test x$host = x$target \
5055 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5056 && test "$prefix" != "NONE"; then
5057 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5058 [Define to PREFIX/include if cpp should also search that directory.])
5061 # Determine the version of glibc, if any, used on the target.
5062 AC_MSG_CHECKING([for target glibc version])
5063 AC_ARG_WITH([glibc-version],
5064 [AS_HELP_STRING([--with-glibc-version=M.N],
5065 [assume GCC used with glibc version M.N or later])], [
5066 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5067 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5068 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5070 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5072 glibc_version_major=0
5073 glibc_version_minor=0
5074 [if test -f $target_header_dir/features.h \
5075 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5076 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5077 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5078 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5080 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5081 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5082 [GNU C Library major version number used on the target, or 0.])
5083 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5084 [GNU C Library minor version number used on the target, or 0.])
5086 AC_ARG_ENABLE(gnu-unique-object,
5087 [AS_HELP_STRING([--enable-gnu-unique-object],
5088 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5089 [case $enable_gnu_unique_object in
5091 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5092 Valid choices are 'yes' and 'no'.]) ;;
5094 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
5096 [.type foo, '$target_type_format_char'gnu_unique_object],,
5097 # We need to unquote above to to use the definition from config.gcc.
5098 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5099 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5101 if test x$enable_gnu_unique_object = xyes; then
5102 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5103 [Define if your assembler supports @gnu_unique_object.])
5106 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5107 [gcc_cv_as_line_zero],
5108 [gcc_cv_as_line_zero=no
5109 if test $in_tree_gas = yes; then
5110 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
5111 elif test "x$gcc_cv_as" != x; then
5112 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5113 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5114 test "x`cat conftest.out`" = x
5116 gcc_cv_as_line_zero=yes
5118 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5119 cat conftest.s >&AS_MESSAGE_LOG_FD
5120 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5121 cat conftest.out >&AS_MESSAGE_LOG_FD
5123 rm -f conftest.o conftest.s conftest.out
5125 if test "x$gcc_cv_as_line_zero" = xyes; then
5126 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5127 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5130 AC_MSG_CHECKING(support for thin archives)
5131 thin_archive_support=no
5132 echo 'int main (void) { return 0; }' > conftest.c
5133 if ($AR --version | sed 1q | grep "GNU ar" \
5134 && $CC $CFLAGS -c conftest.c \
5135 && $AR rcT conftest.a conftest.o \
5136 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5137 thin_archive_support=yes
5139 rm -f conftest.c conftest.o conftest.a conftest
5140 AC_MSG_RESULT($thin_archive_support)
5141 AC_SUBST(thin_archive_support)
5143 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5144 gcc_cv_ld_eh_frame_hdr=no
5145 if test $in_tree_ld = yes ; then
5146 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5147 && test $in_tree_ld_is_elf = yes; then
5148 gcc_cv_ld_eh_frame_hdr=yes
5150 elif test x$gcc_cv_ld != x; then
5151 if echo "$ld_ver" | grep GNU > /dev/null; then
5152 # Check if linker supports --eh-frame-hdr option
5153 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5154 gcc_cv_ld_eh_frame_hdr=yes
5159 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5160 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5161 gcc_cv_ld_eh_frame_hdr=yes
5167 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5168 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5169 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5170 [Define if your linker supports .eh_frame_hdr.])
5172 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5174 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5175 gcc_cv_ld_eh_frame_ciev3=no
5176 if test $in_tree_ld = yes ; then
5177 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5178 && test $in_tree_ld_is_elf = yes; then
5179 gcc_cv_ld_eh_frame_ciev3=yes
5181 elif test x$gcc_cv_ld != x; then
5182 if echo "$ld_ver" | grep GNU > /dev/null; then
5183 gcc_cv_ld_eh_frame_ciev3=yes
5184 if test 0"$ld_date" -lt 20040513; then
5185 if test -n "$ld_date"; then
5186 # If there was date string, but was earlier than 2004-05-13, fail
5187 gcc_cv_ld_eh_frame_ciev3=no
5188 elif test "$ld_vers_major" -lt 2; then
5189 gcc_cv_ld_eh_frame_ciev3=no
5190 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5191 gcc_cv_ld_eh_frame_ciev3=no
5197 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5198 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5199 gcc_cv_ld_eh_frame_ciev3=yes
5205 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5206 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5207 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5208 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5210 AC_MSG_CHECKING(linker position independent executable support)
5212 if test $in_tree_ld = yes ; then
5214 # Full PIE support on Solaris was only introduced in gld 2.26.
5215 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5216 *) gcc_gld_pie_min_version=15 ;;
5218 if test "$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 \
5219 && test $in_tree_ld_is_elf = yes; then
5222 elif test x$gcc_cv_ld != x; then
5223 # Check if linker supports -pie option
5224 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5228 if echo "$ld_ver" | grep GNU > /dev/null \
5229 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5236 *-*-solaris2.1[[1-9]]*)
5237 # Solaris 11.3 added PIE support.
5238 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5245 if test x"$gcc_cv_ld_pie" = xyes; then
5246 AC_DEFINE(HAVE_LD_PIE, 1,
5247 [Define if your linker supports PIE option.])
5249 AC_MSG_RESULT($gcc_cv_ld_pie)
5251 AC_MSG_CHECKING(linker PIE support with copy reloc)
5252 gcc_cv_ld_pie_copyreloc=no
5253 if test $gcc_cv_ld_pie = yes ; then
5254 if test $in_tree_ld = yes ; then
5255 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5256 gcc_cv_ld_pie_copyreloc=yes
5258 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5259 # Check if linker supports -pie option with copy reloc
5261 i?86-*-linux* | x86_64-*-linux*)
5262 cat > conftest1.s <<EOF
5265 .type a_glob, @object
5270 cat > conftest2.s <<EOF
5273 .type main, @function
5275 movl %eax, a_glob(%rip)
5278 .section .data.rel,"aw",@progbits
5283 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5284 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5285 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5286 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5287 gcc_cv_ld_pie_copyreloc=yes
5289 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5294 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5295 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5296 [Define 0/1 if your linker supports -pie option with copy reloc.])
5297 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5299 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5300 gcc_cv_ld_eh_gc_sections=no
5301 if test $in_tree_ld = yes ; then
5302 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5303 && test $in_tree_ld_is_elf = yes; then
5304 gcc_cv_ld_eh_gc_sections=yes
5306 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5307 cat > conftest.s <<EOF
5310 .type _start, @function
5313 .size _start, .-_start
5314 .section .text.foo,"ax",@progbits
5315 .type foo, @function
5319 .section .gcc_except_table.foo,"a",@progbits
5322 .section .eh_frame,"a",@progbits
5325 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5326 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5327 | grep "gc-sections option ignored" > /dev/null; then
5328 gcc_cv_ld_eh_gc_sections=no
5329 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5330 | grep gcc_except_table > /dev/null; then
5331 gcc_cv_ld_eh_gc_sections=yes
5332 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5333 if test x$gcc_cv_as_comdat_group != xyes; then
5334 gcc_cv_ld_eh_gc_sections=no
5335 cat > conftest.s <<EOF
5338 .type _start, @function
5341 .size _start, .-_start
5342 .section .gnu.linkonce.t.foo,"ax",@progbits
5343 .type foo, @function
5347 .section .gcc_except_table.foo,"a",@progbits
5350 .section .eh_frame,"a",@progbits
5353 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5354 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5355 | grep "gc-sections option ignored" > /dev/null; then
5356 gcc_cv_ld_eh_gc_sections=no
5357 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5358 | grep gcc_except_table > /dev/null; then
5359 gcc_cv_ld_eh_gc_sections=yes
5365 rm -f conftest.s conftest.o conftest
5369 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5370 gcc_cv_ld_eh_gc_sections=no
5373 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5374 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5375 [Define if your linker supports garbage collection of
5376 sections in presence of EH frames.])
5378 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5380 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5381 gcc_cv_ld_eh_gc_sections_bug=no
5382 if test $in_tree_ld = yes ; then
5383 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5384 && test $in_tree_ld_is_elf = yes; then
5385 gcc_cv_ld_eh_gc_sections_bug=yes
5387 elif test x$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
5388 gcc_cv_ld_eh_gc_sections_bug=yes
5389 cat > conftest.s <<EOF
5392 .type _start, @function
5395 .size _start, .-_start
5396 .section .text.startup.foo,"ax",@progbits
5397 .type foo, @function
5401 .section .gcc_except_table.foo,"a",@progbits
5404 .section .eh_frame,"a",@progbits
5407 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5408 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5409 | grep "gc-sections option ignored" > /dev/null; then
5411 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5412 | grep gcc_except_table > /dev/null; then
5413 gcc_cv_ld_eh_gc_sections_bug=no
5416 rm -f conftest.s conftest.o conftest
5418 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5419 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5420 [Define if your linker has buggy garbage collection of
5421 sections support when .text.startup.foo like sections are used.])
5423 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5425 AC_MSG_CHECKING(linker for compressed debug sections)
5426 # gold/gld support compressed debug sections since binutils 2.19/2.21
5427 # In binutils 2.26, gld gained support for the ELF gABI format.
5428 if test $in_tree_ld = yes ; then
5429 gcc_cv_ld_compress_debug=0
5430 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5431 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5432 gcc_cv_ld_compress_debug=2
5433 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5434 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5435 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5436 gcc_cv_ld_compress_debug=3
5437 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5438 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5439 && test $in_tree_ld_is_elf = yes; then
5440 gcc_cv_ld_compress_debug=1
5442 elif echo "$ld_ver" | grep GNU > /dev/null; then
5443 if test "$ld_vers_major" -lt 2 \
5444 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5445 gcc_cv_ld_compress_debug=0
5446 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5447 gcc_cv_ld_compress_debug=1
5449 gcc_cv_ld_compress_debug=3
5450 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5452 if test $ld_is_gold = yes; then
5453 gcc_cv_ld_compress_debug=2
5454 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5460 # Introduced in Solaris 11.2.
5461 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5462 gcc_cv_ld_compress_debug=3
5463 gcc_cv_ld_compress_debug_option="-z compress-sections"
5465 gcc_cv_ld_compress_debug=0
5469 # Assume linkers other than GNU ld don't support compessed debug
5471 gcc_cv_ld_compress_debug=0
5476 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5477 [Define to the level of your linker's compressed debug section support.])
5478 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5479 [Define to the linker option to enable compressed debug sections.])
5480 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5482 if test x"$ld64_flag" = x"yes"; then
5484 # Set defaults for possibly untestable items.
5485 gcc_cv_ld64_export_dynamic=0
5487 if test "$build" = "$host"; then
5493 # On Darwin, because of FAT library support, it is often possible to execute
5494 # exes from compatible archs even when the host differs from the build system.
5495 case "$build","$host" in
5496 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
5501 # If the configurer specified a minimum ld64 version to be supported, then use
5502 # that to determine feature support.
5503 if test x"${gcc_cv_ld64_version}" != x; then
5504 AC_MSG_CHECKING(ld64 specified version)
5505 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
5506 AC_MSG_RESULT($gcc_cv_ld64_major)
5507 if test "$gcc_cv_ld64_major" -ge 236; then
5508 gcc_cv_ld64_export_dynamic=1
5510 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
5511 # If the version was not specified, try to find it.
5512 AC_MSG_CHECKING(linker version)
5513 if test x"${gcc_cv_ld64_version}" = x; then
5514 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
5516 AC_MSG_RESULT($gcc_cv_ld64_version)
5518 AC_MSG_CHECKING(linker for -export_dynamic support)
5519 gcc_cv_ld64_export_dynamic=1
5520 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
5521 gcc_cv_ld64_export_dynamic=0
5523 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
5526 if test x"${gcc_cv_ld64_version}" != x; then
5527 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
5528 [Define to ld64 version.])
5531 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
5532 [Define to 1 if ld64 supports '-export_dynamic'.])
5539 AC_CACHE_CHECK(linker --as-needed support,
5540 gcc_cv_ld_as_needed,
5541 [gcc_cv_ld_as_needed=no
5542 gcc_cv_ld_as_needed_option='--as-needed'
5543 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5544 if test $in_tree_ld = yes ; then
5545 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5546 && test $in_tree_ld_is_elf = yes; then
5547 gcc_cv_ld_as_needed=yes
5548 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
5549 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5550 gcc_cv_ld_no_as_needed_option='--pop-state'
5553 elif test x$gcc_cv_ld != x; then
5554 # Check if linker supports --as-needed and --no-as-needed options
5555 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
5556 gcc_cv_ld_as_needed=yes
5557 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
5558 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
5559 && echo "$ld_ver" | grep GNU > /dev/null \
5560 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
5561 # Use these options only when both ld.bfd and ld.gold support
5562 # --push-state/--pop-state, which unfortunately wasn't added
5564 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5565 gcc_cv_ld_no_as_needed_option='--pop-state'
5568 case "$target:$gnu_ld" in
5570 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
5572 gcc_cv_ld_as_needed=yes
5573 gcc_cv_ld_as_needed_option="-z ignore"
5574 gcc_cv_ld_no_as_needed_option="-z record"
5578 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5579 # dl_iterate_phdr, i.e. since Solaris 11.
5581 *-*-solaris2.1[[1-9]]*)
5583 i?86-*-* | x86_64-*-*)
5584 if echo "$ld_ver" | grep GNU > /dev/null; then
5585 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5586 gcc_cv_ld_as_needed=no
5592 gcc_cv_ld_as_needed=no
5596 if test x"$gcc_cv_ld_as_needed" = xyes; then
5597 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5598 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5599 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5600 [Define to the linker option to ignore unused dependencies.])
5601 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5602 [Define to the linker option to keep unused dependencies.])
5605 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5606 saved_LDFLAGS="$LDFLAGS"
5607 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5608 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5609 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
5610 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5612 LDFLAGS="$saved_LDFLAGS"
5613 if test "x$gcc_cv_ld_clearcap" = xyes; then
5614 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5615 [Define if the linker supports clearing hardware capabilities via mapfile.])
5616 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5618 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5624 emul_name="-melf32lppc"
5627 emul_name="-melf32ppc"
5630 AC_CACHE_CHECK(linker .gnu.attributes long double support,
5632 [gcc_cv_ld_ppc_attr=no
5633 if test x"$ld_is_gold" = xyes; then
5634 gcc_cv_ld_ppc_attr=yes
5635 elif test $in_tree_ld = yes ; then
5636 if test "$gcc_cv_gld_major_version" -eq 2 \
5637 -a "$gcc_cv_gld_minor_version" -ge 28 \
5638 -o "$gcc_cv_gld_major_version" -gt 2; then
5639 gcc_cv_ld_ppc_attr=yes
5641 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5642 # check that merging the long double .gnu_attribute doesn't warn
5643 cat > conftest1.s <<EOF
5646 cat > conftest2.s <<EOF
5649 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5650 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5651 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
5652 && test ! -s conftest.err; then
5653 gcc_cv_ld_ppc_attr=yes
5655 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
5658 if test x$gcc_cv_ld_ppc_attr = xyes; then
5659 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
5660 [Define if your PowerPC linker has .gnu.attributes long double support.])
5665 case "$target:$tm_file" in
5666 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5669 emul_name="-melf64lppc"
5672 emul_name="-melf64ppc"
5675 emul_name="-melf64ppc_fbsd"
5678 AC_CACHE_CHECK(linker support for omitting dot symbols,
5679 gcc_cv_ld_no_dot_syms,
5680 [gcc_cv_ld_no_dot_syms=no
5681 if test x"$ld_is_gold" = xyes; then
5682 gcc_cv_ld_no_dot_syms=yes
5683 elif test $in_tree_ld = yes ; then
5684 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5685 gcc_cv_ld_no_dot_syms=yes
5687 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5688 cat > conftest1.s <<EOF
5692 cat > conftest2.s <<EOF
5693 .section ".opd","aw"
5698 .quad .LEfoo,.TOC.@tocbase,0
5704 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5705 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5706 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5707 gcc_cv_ld_no_dot_syms=yes
5709 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5712 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5713 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5714 [Define if your PowerPC64 linker only needs function descriptor syms.])
5717 AC_CACHE_CHECK(linker large toc support,
5718 gcc_cv_ld_large_toc,
5719 [gcc_cv_ld_large_toc=no
5720 if test x"$ld_is_gold" = xyes; then
5721 gcc_cv_ld_large_toc=yes
5722 elif test $in_tree_ld = yes ; then
5723 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5724 gcc_cv_ld_large_toc=yes
5726 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5727 cat > conftest.s <<EOF
5728 .section ".tbss","awT",@nobits
5734 addis 9,13,ie0@got@tprel@ha
5735 ld 9,ie0@got@tprel@l(9)
5737 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5738 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5739 gcc_cv_ld_large_toc=yes
5741 rm -f conftest conftest.o conftest.s
5744 if test x"$gcc_cv_ld_large_toc" = xyes; then
5745 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5746 [Define if your PowerPC64 linker supports a large TOC.])
5749 AC_CACHE_CHECK(linker toc pointer alignment,
5750 gcc_cv_ld_toc_align,
5751 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5752 cat > conftest.s <<EOF
5757 .section .data.rel.ro,"aw",@progbits
5762 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5763 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5764 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5766 rm -f conftest conftest.o conftest.s
5769 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5770 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5771 [Define to .TOC. alignment forced by your linker.])
5778 AC_CACHE_CHECK(linker large toc support,
5779 gcc_cv_ld_large_toc,
5780 [gcc_cv_ld_large_toc=no
5781 if test x$gcc_cv_as != x ; then
5782 cat > conftest.s <<EOF
5792 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5793 gcc_cv_ld_large_toc=yes
5795 rm -f conftest conftest.o conftest.s
5798 if test x"$gcc_cv_ld_large_toc" = xyes; then
5799 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5800 [Define if your PowerPC64 linker supports a large TOC.])
5805 AC_CACHE_CHECK(linker --build-id support,
5807 [gcc_cv_ld_buildid=no
5808 if test $in_tree_ld = yes ; then
5809 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5810 "$gcc_cv_gld_minor_version" -ge 18 -o \
5811 "$gcc_cv_gld_major_version" -gt 2 \
5812 && test $in_tree_ld_is_elf = yes; then
5813 gcc_cv_ld_buildid=yes
5815 elif test x$gcc_cv_ld != x; then
5816 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
5817 gcc_cv_ld_buildid=yes
5820 if test x"$gcc_cv_ld_buildid" = xyes; then
5821 AC_DEFINE(HAVE_LD_BUILDID, 1,
5822 [Define if your linker supports --build-id.])
5825 AC_ARG_ENABLE(linker-build-id,
5826 [AS_HELP_STRING([--enable-linker-build-id],
5827 [compiler will always pass --build-id to linker])],
5829 enable_linker_build_id=no)
5831 if test x"$enable_linker_build_id" = xyes; then
5832 if test x"$gcc_cv_ld_buildid" = xyes; then
5833 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5834 [Define if gcc should always pass --build-id to linker.])
5836 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5840 # In binutils 2.21, GNU ld gained support for new emulations fully
5841 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5842 AC_CACHE_CHECK(linker *_sol2 emulation support,
5843 gcc_cv_ld_sol2_emulation,
5844 [gcc_cv_ld_sol2_emulation=no
5845 if test $in_tree_ld = yes ; then
5846 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5847 "$gcc_cv_gld_minor_version" -ge 21 -o \
5848 "$gcc_cv_gld_major_version" -gt 2 \
5849 && test $in_tree_ld_is_elf = yes; then
5850 gcc_cv_ld_sol2_emulation=yes
5852 elif test x$gcc_cv_ld != x; then
5853 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5854 grep _sol2 > /dev/null; then
5855 gcc_cv_ld_sol2_emulation=yes
5858 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5859 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5860 [Define if your linker supports the *_sol2 emulations.])
5863 AC_CACHE_CHECK(linker --sysroot support,
5865 [gcc_cv_ld_sysroot=no
5866 if test $in_tree_ld = yes ; then
5867 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5868 gcc_cv_ld_sysroot=yes
5870 elif test x$gcc_cv_ld != x; then
5871 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
5872 gcc_cv_ld_sysroot=yes
5875 if test x"$gcc_cv_ld_sysroot" = xyes; then
5876 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5877 [Define if your linker supports --sysroot.])
5882 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5883 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5884 gcc_cv_solaris_crts,
5885 [gcc_cv_solaris_crts=no
5886 if test x$host != x$target; then
5887 if test "x$with_sysroot" = xyes; then
5888 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5890 target_sysroot="${with_sysroot}"
5893 target_libdir="$target_sysroot/usr/lib"
5894 # At the time they were added, gcrt1.o became a symlink for backwards
5895 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5897 i?86-*-solaris2* | x86_64-*-solaris2*)
5898 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5901 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5906 if test x$gcc_cv_solaris_crts = xyes; then
5907 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5908 [Define if the system-provided CRTs are present on Solaris.])
5911 AC_ARG_ENABLE(libssp,
5912 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
5913 [case "${enableval}" in
5917 AC_MSG_ERROR([unknown libssp setting $enableval])
5921 # Test for stack protector support in target C library.
5922 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5923 gcc_cv_libc_provides_ssp,
5924 [gcc_cv_libc_provides_ssp=no
5925 if test "x$enable_libssp" = "xno"; then
5926 gcc_cv_libc_provides_ssp=yes
5927 elif test "x$enable_libssp" = "xyes"; then
5928 gcc_cv_libc_provides_ssp=no
5932 # All versions of musl provide stack protector
5933 gcc_cv_libc_provides_ssp=yes;;
5934 *-*-linux* | *-*-kfreebsd*-gnu)
5935 # glibc 2.4 and later provides __stack_chk_fail and
5936 # either __stack_chk_guard, or TLS access to stack guard canary.
5937 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5938 [if test -f $target_header_dir/features.h \
5939 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5940 $target_header_dir/features.h > /dev/null; then
5941 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5942 $target_header_dir/features.h > /dev/null && \
5943 test -f $target_header_dir/bits/uClibc_config.h && \
5944 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5945 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5946 gcc_cv_libc_provides_ssp=yes
5948 # all versions of Bionic support stack protector
5949 elif test -f $target_header_dir/sys/cdefs.h \
5950 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5951 $target_header_dir/sys/cdefs.h > /dev/null; then
5952 gcc_cv_libc_provides_ssp=yes
5956 # Avoid complicated tests (see
5957 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5958 # simply assert that glibc does provide this, which is true for all
5959 # realistically usable GNU/Hurd configurations.
5960 # All supported versions of musl provide it as well
5961 gcc_cv_libc_provides_ssp=yes;;
5962 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
5963 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5964 [echo "no __stack_chk_fail on this target"])
5966 *) gcc_cv_libc_provides_ssp=no ;;
5970 if test x$gcc_cv_libc_provides_ssp = xyes; then
5971 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5972 [Define if your target C library provides stack protector support])
5975 # Check whether --enable-default-ssp was given.
5976 AC_ARG_ENABLE(default-ssp,
5977 [AS_HELP_STRING([--enable-default-ssp],
5978 [enable Stack Smashing Protection as default])],[
5979 if test x$gcc_cv_libc_provides_ssp = xyes; then
5981 ia64*-*-*) enable_default_ssp=no ;;
5982 *) enable_default_ssp=$enableval ;;
5985 enable_default_ssp=no
5987 enable_default_ssp=no)
5988 if test x$enable_default_ssp = xyes ; then
5989 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5990 [Define if your target supports default stack protector and it is enabled.])
5992 AC_SUBST([enable_default_ssp])
5994 # Test for <sys/sdt.h> on the target.
5995 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5996 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5998 if test -f $target_header_dir/sys/sdt.h; then
6000 AC_DEFINE(HAVE_SYS_SDT_H, 1,
6001 [Define if your target C library provides sys/sdt.h])
6003 AC_MSG_RESULT($have_sys_sdt_h)
6005 # Check if TFmode long double should be used by default or not.
6006 # Some glibc targets used DFmode long double, but with glibc 2.4
6007 # and later they can use TFmode.
6009 powerpc*-*-linux* | \
6013 AC_ARG_WITH(long-double-128,
6014 [AS_HELP_STRING([--with-long-double-128],
6015 [use 128-bit long double by default])],
6016 gcc_cv_target_ldbl128="$with_long_double_128",
6017 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6018 [gcc_cv_target_ldbl128=no
6019 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6020 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6021 && gcc_cv_target_ldbl128=yes
6025 if test x$gcc_cv_target_ldbl128 = xyes; then
6026 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6027 [Define if TFmode long double should be the default])
6030 # Check if TFmode long double target should use the IBM extended double or IEEE
6031 # 128-bit floating point formats if long doubles are 128-bits long. The long
6032 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6033 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6035 AC_ARG_WITH([long-double-format],
6036 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6037 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6038 case "$target:$with_long_double_format" in
6039 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6042 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6043 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6045 power7 | power8 | power9 | power1*)
6049 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6050 supported if the default cpu is power7 or newer])
6051 with_long_double_format=""
6055 xpowerpc64*-*-linux*:*)
6056 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6057 with_long_double_format=""
6060 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6061 on 64-bit PowerPC VSX Linux systems])
6062 with_long_double_format=""
6067 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6068 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6069 gcc_cv_libc_provides_hwcap_in_tcb=no
6072 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6075 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6076 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6077 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6080 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6081 gcc_cv_target_dl_iterate_phdr=unknown
6083 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
6084 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
6085 # libdl there, both complicating its use and breaking compatibility
6086 # between Solaris 10 updates.
6087 *-*-solaris2.1[[1-9]]*)
6088 # <link.h> needs both a dl_iterate_phdr declaration and support for
6089 # compilation with largefile support.
6090 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6091 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6092 gcc_cv_target_dl_iterate_phdr=yes
6094 gcc_cv_target_dl_iterate_phdr=no
6097 *-*-dragonfly* | *-*-freebsd*)
6098 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6099 gcc_cv_target_dl_iterate_phdr=yes
6101 gcc_cv_target_dl_iterate_phdr=no
6105 gcc_cv_target_dl_iterate_phdr=yes
6108 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
6109 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
6110 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
6111 [Define if your target C library provides the `dl_iterate_phdr' function.])
6113 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
6115 # We no longer support different GC mechanisms. Emit an error if
6116 # the user configures with --with-gc.
6118 [AS_HELP_STRING([--with-gc={page,zone}],
6119 [this option is not supported anymore. It used to choose
6120 the garbage collection mechanism to use with the compiler])],
6121 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
6124 # Libraries to use on the host. This will normally be set by the top
6125 # level Makefile. Here we simply capture the value for our Makefile.
6126 if test -z "${HOST_LIBS+set}"; then
6131 # Use the system's zlib library.
6134 dnl Very limited version of automake's enable-maintainer-mode
6136 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
6137 dnl maintainer-mode is disabled by default
6138 AC_ARG_ENABLE(maintainer-mode,
6139 [AS_HELP_STRING([--enable-maintainer-mode],
6140 [enable make rules and dependencies not useful
6141 (and sometimes confusing) to the casual installer])],
6142 maintainer_mode=$enableval,
6145 AC_MSG_RESULT($maintainer_mode)
6147 if test "$maintainer_mode" = "yes"; then
6154 dnl Whether to prevent multiple front-ends from linking at the same time
6156 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
6157 AC_ARG_ENABLE(link-mutex,
6158 [AS_HELP_STRING([--enable-link-mutex],
6159 [avoid linking multiple front-ends at once to avoid thrashing
6160 on the build machine])],
6161 do_link_mutex=$enableval,
6163 AC_MSG_RESULT($do_link_mutex)
6165 if test "$do_link_mutex" = "yes"; then
6170 AC_SUBST(DO_LINK_MUTEX)
6176 # Make empty files to contain the specs and options for each language.
6177 # Then add #include lines to for a compiler that has specs and/or options.
6183 # These (without "all_") are set in each config-lang.in.
6184 # `language' must be a single word so is spelled singularly.
6187 all_outputs='Makefile'
6188 # List of language makefile fragments.
6190 # Additional files for gengtype
6191 all_gtfiles="$target_gtfiles"
6193 # These are the languages that are set in --enable-languages,
6194 # and are available in the GCC tree.
6195 all_selected_languages=
6197 # Add the language fragments.
6198 # Languages are added via two mechanisms. Some information must be
6199 # recorded in makefile variables, these are defined in config-lang.in.
6200 # We accumulate them and plug them into the main Makefile.
6201 # The other mechanism is a set of hooks for each of the main targets
6202 # like `clean', `install', etc.
6204 language_hooks="Make-hooks"
6206 for lang in ${srcdir}/*/config-lang.in
6209 test "$lang" = "${srcdir}/*/config-lang.in" && continue
6211 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
6212 if test "x$lang_alias" = x
6214 echo "$lang doesn't set \$language." 1>&2
6217 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
6218 subdirs="$subdirs $subdir"
6220 # $gcc_subdir is where the gcc integration files are to be found
6221 # for a language, both for internal compiler purposes (compiler
6222 # sources implementing front-end to GCC tree converters), and for
6223 # build infrastructure purposes (Make-lang.in, etc.)
6225 # This will be <subdir> (relative to $srcdir) if a line like
6226 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
6227 # is found in <langdir>/config-lang.in, and will remain <langdir>
6230 # Except for the language alias (fetched above), the regular
6231 # "config-lang.in" contents are always retrieved from $gcc_subdir,
6232 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
6233 # only this and the language alias.
6235 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
6236 if [ "$gcc_subdir" = "" ]; then
6237 gcc_subdir="$subdir"
6240 case ",$enable_languages," in
6242 all_selected_languages="$all_selected_languages $lang_alias"
6243 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
6244 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
6256 . ${srcdir}/$gcc_subdir/config-lang.in
6257 if test "x$language" = x
6259 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
6264 case ",$enable_languages," in
6267 for i in $subdir_requires; do
6268 test -f "${srcdir}/$i/config-lang.in" && continue
6276 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
6277 if test -f $srcdir/$gcc_subdir/lang.opt; then
6278 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
6279 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
6281 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
6282 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
6284 all_languages="$all_languages $language"
6285 all_compilers="$all_compilers $compilers"
6286 all_outputs="$all_outputs $outputs"
6287 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
6288 case ",$enable_languages," in
6290 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
6292 AC_SUBST(enable_lto)
6299 for language in $all_selected_languages
6301 check_languages="$check_languages check-$language"
6305 for language in $all_selected_languages
6307 selftest_languages="$selftest_languages selftest-$language"
6310 # We link each language in with a set of hooks, reached indirectly via
6311 # lang.${target}. Only do so for selected languages.
6315 target_list="all.cross start.encap rest.encap tags \
6316 install-common install-man install-info install-pdf install-html dvi \
6317 pdf html uninstall info man srcextra srcman srcinfo \
6318 mostlyclean clean distclean maintainer-clean install-plugin"
6320 for t in $target_list
6323 for lang in $all_selected_languages
6327 echo "lang.$t: $x" >> Make-hooks
6331 # Option include files
6334 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
6335 option_includes="option-includes.mk"
6336 AC_SUBST_FILE(option_includes)
6344 echo "dir ." > .gdbinit
6345 echo "dir ${srcdir}" >> .gdbinit
6346 if test x$gdb_needs_out_file_path = xyes
6348 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
6350 if test "x$subdirs" != x; then
6353 echo "dir ${srcdir}/$s" >> .gdbinit
6356 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
6357 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
6359 # Put a breakpoint on __asan_report_error to help with debugging buffer
6362 *-fsanitize=address*)
6363 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
6367 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
6368 AC_SUBST(gcc_tooldir)
6371 # Find a directory in which to install a shared libgcc.
6373 AC_ARG_ENABLE(version-specific-runtime-libs,
6374 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
6375 [specify that runtime libraries should be
6376 installed in a compiler-specific directory])])
6378 # Substitute configuration variables
6381 AC_SUBST(all_compilers)
6382 AC_SUBST(all_gtfiles)
6383 AC_SUBST(all_lang_makefrags)
6384 AC_SUBST(all_languages)
6385 AC_SUBST(all_selected_languages)
6386 AC_SUBST(build_exeext)
6387 AC_SUBST(build_install_headers_dir)
6388 AC_SUBST(build_xm_file_list)
6389 AC_SUBST(build_xm_include_list)
6390 AC_SUBST(build_xm_defines)
6391 AC_SUBST(build_file_translate)
6392 AC_SUBST(check_languages)
6393 AC_SUBST(selftest_languages)
6394 AC_SUBST(cpp_install_dir)
6395 AC_SUBST(xmake_file)
6396 AC_SUBST(tmake_file)
6397 AC_SUBST(TM_ENDIAN_CONFIG)
6398 AC_SUBST(TM_MULTILIB_CONFIG)
6399 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
6400 AC_SUBST(extra_gcc_objs)
6401 AC_SUBST(user_headers_inc_next_pre)
6402 AC_SUBST(user_headers_inc_next_post)
6403 AC_SUBST(extra_headers_list)
6404 AC_SUBST(extra_objs)
6405 AC_SUBST(extra_programs)
6406 AC_SUBST(float_h_file)
6407 AC_SUBST(gcc_config_arguments)
6408 AC_SUBST(gcc_gxx_include_dir)
6409 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
6410 AC_SUBST(host_exeext)
6411 AC_SUBST(host_xm_file_list)
6412 AC_SUBST(host_xm_include_list)
6413 AC_SUBST(host_xm_defines)
6414 AC_SUBST(out_host_hook_obj)
6416 AC_SUBST(lang_opt_files)
6417 AC_SUBST(lang_specs_files)
6418 AC_SUBST(lang_tree_files)
6419 AC_SUBST(local_prefix)
6421 AC_SUBST(objc_boehm_gc)
6423 AC_SUBST(out_object_file)
6424 AC_SUBST(common_out_file)
6425 AC_SUBST(common_out_object_file)
6426 AC_SUBST(tm_file_list)
6427 AC_SUBST(tm_include_list)
6428 AC_SUBST(tm_defines)
6429 AC_SUBST(tm_p_file_list)
6430 AC_SUBST(tm_p_include_list)
6431 AC_SUBST(tm_d_file_list)
6432 AC_SUBST(tm_d_include_list)
6433 AC_SUBST(xm_file_list)
6434 AC_SUBST(xm_include_list)
6435 AC_SUBST(xm_defines)
6436 AC_SUBST(use_gcc_stdint)
6437 AC_SUBST(c_target_objs)
6438 AC_SUBST(cxx_target_objs)
6439 AC_SUBST(fortran_target_objs)
6440 AC_SUBST(d_target_objs)
6441 AC_SUBST(target_cpu_default)
6443 AC_SUBST_FILE(language_hooks)
6446 if test x${build} = x${host} ; then
6447 if test x${host} = x${target} ; then
6448 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6450 echo "Links are now set up to build a cross-compiler" 1>&2
6451 echo " from ${host} to ${target}." 1>&2
6454 if test x${host} = x${target} ; then
6455 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6456 echo " for ${target}." 1>&2
6458 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6459 echo " from ${host} to ${target}." 1>&2
6463 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6464 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6466 AC_ARG_VAR(ISLLIBS,[How to link isl])
6467 AC_ARG_VAR(ISLINC,[How to find isl include files])
6468 if test "x${ISLLIBS}" != "x" ; then
6469 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6473 AC_SUBST(pluginlibs)
6474 AC_SUBST(enable_plugin)
6475 if test x"$enable_plugin" = x"yes"; then
6476 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6480 # Enable --enable-host-shared
6481 AC_ARG_ENABLE(host-shared,
6482 [AS_HELP_STRING([--enable-host-shared],
6483 [build host code as shared libraries])],
6484 [PICFLAG=-fPIC], [PICFLAG=])
6485 AC_SUBST(enable_host_shared)
6489 AC_ARG_ENABLE(libquadmath-support,
6490 [AS_HELP_STRING([--disable-libquadmath-support],
6491 [disable libquadmath support for Fortran])],
6492 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6493 ENABLE_LIBQUADMATH_SUPPORT=yes)
6494 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6495 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6496 [Define to 1 to enable libquadmath support])
6500 # Specify what hash style to use by default.
6501 AC_ARG_WITH([linker-hash-style],
6502 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6503 [specify the linker hash style])],
6504 [case x"$withval" in
6506 LINKER_HASH_STYLE=sysv
6509 LINKER_HASH_STYLE=gnu
6512 LINKER_HASH_STYLE=both
6515 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6518 [LINKER_HASH_STYLE=''])
6519 if test x"${LINKER_HASH_STYLE}" != x; then
6520 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6521 [The linker hash style])
6524 # Specify what should be the default of -fdiagnostics-color option.
6525 AC_ARG_WITH([diagnostics-color],
6526 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6527 [specify the default of -fdiagnostics-color option
6528 auto-if-env stands for -fdiagnostics-color=auto if
6529 GCC_COLOR environment variable is present and
6530 -fdiagnostics-color=never otherwise])],
6531 [case x"$withval" in
6533 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6536 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6539 DIAGNOSTICS_COLOR_DEFAULT=-1
6542 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6545 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6548 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6549 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6550 [The default for -fdiagnostics-color option])
6552 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6553 # of jit/jit-playback.c.
6554 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
6555 echo "gcc_driver_version: ${gcc_driver_version}"
6556 cat > gcc-driver-name.h <<EOF
6557 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
6560 # Check whether --enable-default-pie was given.
6561 AC_ARG_ENABLE(default-pie,
6562 [AS_HELP_STRING([--enable-default-pie],
6563 [enable Position Independent Executable as default])],
6564 enable_default_pie=$enableval,
6565 enable_default_pie=no)
6566 if test x$enable_default_pie = xyes ; then
6567 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6568 [Define if your target supports default PIE and it is enabled.])
6570 AC_SUBST([enable_default_pie])
6572 # Check if -fno-PIE works.
6573 AC_CACHE_CHECK([for -fno-PIE option],
6575 [saved_CXXFLAGS="$CXXFLAGS"
6576 CXXFLAGS="$CXXFLAGS -fno-PIE"
6577 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6578 [gcc_cv_c_no_fpie=yes],
6579 [gcc_cv_c_no_fpie=no])
6580 CXXFLAGS="$saved_CXXFLAGS"])
6581 if test "$gcc_cv_c_no_fpie" = "yes"; then
6582 NO_PIE_CFLAGS="-fno-PIE"
6584 AC_SUBST([NO_PIE_CFLAGS])
6586 # Check if -no-pie works.
6587 AC_CACHE_CHECK([for -no-pie option],
6589 [saved_LDFLAGS="$LDFLAGS"
6590 LDFLAGS="$LDFLAGS -no-pie"
6591 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6592 [gcc_cv_no_pie=yes],
6594 LDFLAGS="$saved_LDFLAGS"])
6595 if test "$gcc_cv_no_pie" = "yes"; then
6596 NO_PIE_FLAG="-no-pie"
6598 AC_SUBST([NO_PIE_FLAG])
6600 # Check linker supports '-z bndplt'
6601 ld_bndplt_support=no
6602 AC_MSG_CHECKING(linker -z bndplt option)
6603 if test x"$ld_is_gold" = xno; then
6604 if test $in_tree_ld = yes ; then
6605 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6606 ld_bndplt_support=yes
6608 elif test x$gcc_cv_ld != x; then
6609 # Check if linker supports -a bndplt option
6610 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
6611 ld_bndplt_support=yes
6615 if test x"$ld_bndplt_support" = xyes; then
6616 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6617 [Define if your linker supports -z bndplt])
6619 AC_MSG_RESULT($ld_bndplt_support)
6621 # Check linker supports '--push-state'/'--pop-state'
6622 ld_pushpopstate_support=no
6623 AC_MSG_CHECKING(linker --push-state/--pop-state options)
6624 if test x"$ld_is_gold" = xno; then
6625 if test $in_tree_ld = yes ; then
6626 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6627 ld_pushpopstate_support=yes
6629 elif test x$gcc_cv_ld != x; then
6630 # Check if linker supports --push-state/--pop-state options
6631 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
6632 ld_pushpopstate_support=yes
6636 if test x"$ld_pushpopstate_support" = xyes; then
6637 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
6638 [Define if your linker supports --push-state/--pop-state])
6640 AC_MSG_RESULT($ld_pushpopstate_support)
6642 # Configure the subdirectories
6643 # AC_CONFIG_SUBDIRS($subdirs)
6645 # Create the Makefile
6646 # and configure language subdirectories
6647 AC_CONFIG_FILES($all_outputs)
6649 AC_CONFIG_COMMANDS([default],
6651 case ${CONFIG_HEADERS} in
6652 *auto-host.h:config.in*)
6655 # Make sure all the subdirs exist.
6656 for d in $subdirs doc build common c-family
6658 test -d $d || mkdir $d
6661 [subdirs='$subdirs'])