2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2020 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 "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
379 # Determine PICFLAG for target gnatlib.
380 GCC_PICFLAG_FOR_TARGET
381 AC_SUBST(PICFLAG_FOR_TARGET)
383 # -------------------------
384 # Check C compiler features
385 # -------------------------
387 AC_USE_SYSTEM_EXTENSIONS
394 # sizeof(char) is 1 by definition.
395 AC_CHECK_SIZEOF(void *)
396 AC_CHECK_SIZEOF(short)
398 AC_CHECK_SIZEOF(long)
399 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
401 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
402 AC_MSG_ERROR([uint64_t or int64_t not found])
405 # check what underlying integer type int64_t uses
406 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
407 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
411 template <typename T> struct X { };
413 struct X<long> { typedef long t; };
414 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
415 if test "$ac_cv_int64_t_type" = "long"; then
416 AC_DEFINE(INT64_T_IS_LONG, 1,
417 [Define if int64_t uses long as underlying type.])
419 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
423 template <typename T> struct X { };
425 struct X<long long> { typedef long long t; };
426 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
429 AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [
430 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
432 ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])])
433 if test $ac_cv_std_swap_in_utility = yes; then
434 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1,
435 [Define if <utility> defines std::swap.])
438 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
439 # If the host compiler is affected by the bug, and we build with optimization
440 # enabled (which happens e.g. when cross-compiling), the pool allocator may
441 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
442 # Since there is no reliable feature check for the presence of this bug,
443 # we simply use a GCC version number check. (This should never trigger for
444 # stages 2 or 3 of a native bootstrap.)
446 if test "$GCC" = yes; then
447 saved_CXXFLAGS="$CXXFLAGS"
449 # The following test compilation will succeed if and only if $CXX accepts
450 # -fno-strict-aliasing *and* is older than GCC 4.3.
451 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
452 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
453 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
454 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
455 #error compiler not affected by placement new aliasing bug
458 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
459 [AC_MSG_RESULT([no])])
461 CXXFLAGS="$saved_CXXFLAGS"
463 AC_SUBST(aliasing_flags)
467 # ---------------------
468 # Warnings and checking
469 # ---------------------
471 # Check $CC warning features (if it's GCC).
472 # We want to use -pedantic, but we don't want warnings about
476 # * C++11 narrowing conversions in { }
477 # So, we only use -pedantic if we can disable those warnings.
479 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
480 AC_ARG_ENABLE(build-format-warnings,
481 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
482 [],[enable_build_format_warnings=yes])
483 AS_IF([test $enable_build_format_warnings = no],
484 [wf_opt=-Wno-format],[wf_opt=])
485 ACX_PROG_CXX_WARNING_OPTS(
486 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ],
487 [-Wcast-qual -Wno-error=format-diag $wf_opt])),
489 ACX_PROG_CC_WARNING_OPTS(
490 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes ],
491 [-Wno-error=format-diag])), [c_loose_warn])
492 ACX_PROG_CXX_WARNING_OPTS(
493 m4_quote(m4_do([-Wmissing-format-attribute ],
494 [-Woverloaded-virtual])), [strict_warn])
495 ACX_PROG_CC_WARNING_OPTS(
496 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
497 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
498 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
499 [-Wno-overlength-strings])), [strict_warn])
500 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
502 # The above macros do nothing if the compiler is not GCC. However, the
503 # Makefile has more goo to add other flags, so these variables are used
504 # to enable warnings only for GCC.
507 if test "x$GCC" = "xyes"; then
508 warn_cflags='$(GCC_WARN_CFLAGS)'
509 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
511 AC_SUBST(warn_cflags)
512 AC_SUBST(warn_cxxflags)
514 # Disable exceptions and RTTI if building with g++
515 ACX_PROG_CC_WARNING_OPTS(
516 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
519 # Enable expensive internal checks
521 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
525 AC_ARG_ENABLE(checking,
526 [AS_HELP_STRING([[--enable-checking[=LIST]]],
527 [enable expensive run-time checks. With LIST,
528 enable only specific categories of checks.
529 Categories are: yes,no,all,none,release.
530 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc,
531 rtlflag,rtl,runtime,tree,valgrind,types])],
532 [ac_checking_flags="${enableval}"],[
533 # Determine the default checks.
534 if test x$is_release = x ; then
535 ac_checking_flags=yes,extra
537 ac_checking_flags=release
539 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
540 for check in release $ac_checking_flags
543 # these set all the flags to specific states
544 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
545 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ;
546 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
547 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
548 ac_tree_checking=1 ; ac_valgrind_checking= ;
549 ac_types_checking=1 ;;
550 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
551 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
552 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
553 ac_rtlflag_checking= ; ac_runtime_checking= ;
554 ac_tree_checking= ; ac_valgrind_checking= ;
555 ac_types_checking= ;;
556 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
557 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ;
558 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
559 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
560 ac_tree_checking=1 ; ac_valgrind_checking= ;
561 ac_types_checking=1 ;;
562 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
563 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
564 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
565 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
566 ac_tree_checking= ; ac_valgrind_checking= ;
567 ac_types_checking= ;;
568 # these enable particular checks
569 assert) ac_assert_checking=1 ;;
570 df) ac_df_checking=1 ;;
571 extra) ac_extra_checking=1 ;;
572 fold) ac_fold_checking=1 ;;
573 gc) ac_gc_checking=1 ;;
574 gcac) ac_gc_always_collect=1 ;;
575 gimple) ac_gimple_checking=1 ;;
576 misc) ac_checking=1 ;;
577 rtl) ac_rtl_checking=1 ;;
578 rtlflag) ac_rtlflag_checking=1 ;;
579 runtime) ac_runtime_checking=1 ;;
580 tree) ac_tree_checking=1 ;;
581 types) ac_types_checking=1 ;;
582 valgrind) ac_valgrind_checking=1 ;;
583 *) AC_MSG_ERROR(unknown check category $check) ;;
589 if test x$ac_checking != x ; then
590 AC_DEFINE(CHECKING_P, 1,
591 [Define to 0/1 if you want more run-time sanity checks. This one gets a grab
592 bag of miscellaneous but relatively cheap checks.])
593 nocommon_flag=-fno-common
595 AC_DEFINE(CHECKING_P, 0)
597 AC_SUBST(nocommon_flag)
598 if test x$ac_extra_checking != x ; then
599 AC_DEFINE(ENABLE_EXTRA_CHECKING, 1,
600 [Define to 0/1 if you want extra run-time checking that might affect code
603 AC_DEFINE(ENABLE_EXTRA_CHECKING, 0)
605 if test x$ac_df_checking != x ; then
606 AC_DEFINE(ENABLE_DF_CHECKING, 1,
607 [Define if you want more run-time sanity checks for dataflow.])
609 if test x$ac_assert_checking != x ; then
610 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
611 [Define if you want assertions enabled. This is a cheap check.])
613 if test x$ac_gimple_checking != x ; then
614 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
615 [Define if you want operations on GIMPLE (the basic data structure of
616 the high-level optimizers) to be checked for dynamic type safety at
617 runtime. This is moderately expensive.])
619 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
620 if test x$ac_runtime_checking != x ; then
621 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
622 [Define if you want runtime assertions enabled. This is a cheap check.])
624 if test x$ac_tree_checking != x ; then
625 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
626 [Define if you want all operations on trees (the basic data
627 structure of the front ends) to be checked for dynamic type safety
628 at runtime. This is moderately expensive.
632 if test x$ac_types_checking != x ; then
633 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
634 [Define if you want all gimple types to be verified after gimplifiation.
638 AC_SUBST(TREECHECKING)
639 if test x$ac_rtl_checking != x ; then
640 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
641 [Define if you want all operations on RTL (the basic data structure
642 of the optimizer and back end) to be checked for dynamic type safety
643 at runtime. This is quite expensive.])
645 if test x$ac_rtlflag_checking != x ; then
646 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
647 [Define if you want RTL flag accesses to be checked against the RTL
648 codes that are supported for each access macro. This is relatively
651 if test x$ac_gc_checking != x ; then
652 AC_DEFINE(ENABLE_GC_CHECKING, 1,
653 [Define if you want the garbage collector to do object poisoning and
654 other memory allocation checks. This is quite expensive.])
656 if test x$ac_gc_always_collect != x ; then
657 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
658 [Define if you want the garbage collector to operate in maximally
659 paranoid mode, validating the entire heap and collecting garbage at
660 every opportunity. This is extremely expensive.])
662 if test x$ac_fold_checking != x ; then
663 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
664 [Define if you want fold checked that it never destructs its argument.
665 This is quite expensive.])
667 valgrind_path_defines=
670 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
671 dnl # an if statement. This was the source of very frustrating bugs
672 dnl # in converting to autoconf 2.5x!
673 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
675 # It is certainly possible that there's valgrind but no valgrind.h.
676 # GCC relies on making annotations so we must have both.
677 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
678 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
679 [[#include <valgrind/memcheck.h>
680 #ifndef VALGRIND_DISCARD
681 #error VALGRIND_DISCARD not defined
683 [gcc_cv_header_valgrind_memcheck_h=yes],
684 [gcc_cv_header_valgrind_memcheck_h=no])
685 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
686 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
687 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
688 [[#include <memcheck.h>
689 #ifndef VALGRIND_DISCARD
690 #error VALGRIND_DISCARD not defined
692 [gcc_cv_header_memcheck_h=yes],
693 [gcc_cv_header_memcheck_h=no])
694 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
695 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
696 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
697 [Define if valgrind's valgrind/memcheck.h header is installed.])
699 if test $gcc_cv_header_memcheck_h = yes; then
700 AC_DEFINE(HAVE_MEMCHECK_H, 1,
701 [Define if valgrind's memcheck.h header is installed.])
704 if test x$ac_valgrind_checking != x ; then
705 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
706 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
707 if test "x$valgrind_path" = "x" \
708 || (test $have_valgrind_h = no \
709 && test $gcc_cv_header_memcheck_h = no \
710 && test $gcc_cv_header_valgrind_memcheck_h = no); then
711 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
713 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
714 valgrind_command="$valgrind_path -q"
715 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
716 [Define if you want to run subprograms and generated programs
717 through valgrind (a memory checker). This is extremely expensive.])
719 AC_SUBST(valgrind_path_defines)
720 AC_SUBST(valgrind_command)
722 # Enable code coverage collection
723 AC_ARG_ENABLE(coverage,
724 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
725 [enable compiler's code coverage collection.
726 Use to measure compiler performance and locate
727 unused parts of the compiler. With LEVEL, specify
728 optimization. Values are opt, noopt,
730 [case "${enableval}" in
732 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0 -fkeep-static-functions"
735 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2 -fkeep-static-functions"
738 # a.k.a. --disable-coverage
742 AC_MSG_ERROR(unknown coverage setting $enableval)
746 AC_SUBST(coverage_flags)
748 AC_ARG_ENABLE(gather-detailed-mem-stats,
749 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
750 [enable detailed memory allocation stats gathering])], [],
751 [enable_gather_detailed_mem_stats=no])
752 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
753 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
754 [Define to enable detailed memory allocation stats gathering.])
756 AC_ARG_ENABLE(valgrind-annotations,
757 [AS_HELP_STRING([--enable-valgrind-annotations],
758 [enable valgrind runtime interaction])], [],
759 [enable_valgrind_annotations=no])
760 if test x$enable_valgrind_annotations != xno \
761 || test x$ac_valgrind_checking != x; then
762 if (test $have_valgrind_h = no \
763 && test $gcc_cv_header_memcheck_h = no \
764 && test $gcc_cv_header_valgrind_memcheck_h = no); then
765 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
767 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
768 [Define to get calls to the valgrind runtime enabled.])
771 # -------------------------------
772 # Miscenalleous configure options
773 # -------------------------------
777 [AS_HELP_STRING([--with-stabs],
778 [arrange to use stabs instead of host debug format])],
782 # Determine whether or not multilibs are enabled.
783 AC_ARG_ENABLE(multilib,
784 [AS_HELP_STRING([--enable-multilib],
785 [enable library support for multiple ABIs])],
786 [], [enable_multilib=yes])
787 AC_SUBST(enable_multilib)
789 # Determine whether or not multiarch is enabled.
790 AC_ARG_ENABLE(multiarch,
791 [AS_HELP_STRING([--enable-multiarch],
792 [enable support for multiarch paths])],
793 [case "${enableval}" in
794 yes|no|auto) enable_multiarch=$enableval;;
795 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
796 esac], [enable_multiarch=auto])
797 if test x${enable_multiarch} = xauto; then
798 if test x${with_native_system_header_dir} != x; then
799 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
802 if test x$host != x$target && test "x$with_sysroot" = x; then
803 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
807 AC_MSG_CHECKING(for multiarch configuration)
808 AC_SUBST(enable_multiarch)
809 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
811 # needed for setting the multiarch name for soft-float/hard-float ABIs
815 # default stack clash protection guard size as power of twos in bytes.
816 # Please keep these in sync with params.def.
820 # Keep the default value when the option is not used to 0, this allows us to
821 # distinguish between the cases where the user specifially set a value via
822 # configure and when the normal default value is used.
823 AC_ARG_WITH(stack-clash-protection-guard-size,
824 [AS_HELP_STRING([--with-stack-clash-protection-guard-size=size],
825 [Set the default stack clash protection guard size for specific targets as a power of two in bytes.])],
826 [DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size"], [DEFAULT_STK_CLASH_GUARD_SIZE=0])
827 if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \
828 && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \
829 || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then
830 AC_MSG_ERROR(m4_normalize([
831 Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. \
832 Must be between $stk_clash_min and $stk_clash_max.]))
835 AC_DEFINE_UNQUOTED(DEFAULT_STK_CLASH_GUARD_SIZE, $DEFAULT_STK_CLASH_GUARD_SIZE,
836 [Define to larger than zero set the default stack clash protector size.])
838 # Enable __cxa_atexit for C++.
839 AC_ARG_ENABLE(__cxa_atexit,
840 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
843 # Enable C extension for decimal float if target supports it.
844 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
846 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
847 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
848 [Define to 1 to enable decimal float extension to C.])
850 # Use default_decimal_float for dependency.
851 enable_decimal_float=$default_decimal_float
853 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
854 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
855 [Define to 1 to specify that we are using the BID decimal floating
856 point format instead of DPD])
858 # Enable C extension for fixed-point arithmetic.
859 AC_ARG_ENABLE(fixed-point,
860 [AS_HELP_STRING([--enable-fixed-point],
861 [enable fixed-point arithmetic extension to C])],
866 enable_fixed_point=yes
870 enable_fixed_point=yes
873 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
874 enable_fixed_point=no
878 AC_SUBST(enable_fixed_point)
880 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
881 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
882 [Define to 1 to enable fixed-point arithmetic extension to C.])
885 # Pass with no value to take the default
886 # Pass with a value to specify a thread package
887 AC_ARG_ENABLE(threads,
888 [AS_HELP_STRING([[--enable-threads[=LIB]]],
889 [enable thread usage for target GCC,
890 using LIB thread package])],,
894 [AS_HELP_STRING([--enable-tls],
895 [enable or disable generation of tls code
896 overriding the assembler check for tls support])],
900 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
901 Valid choices are 'yes' and 'no'.]) ;;
905 AC_ARG_ENABLE(vtable-verify,
906 [AS_HELP_STRING([--enable-vtable-verify],
907 [enable vtable verification feature])],,
908 [enable_vtable_verify=no])
909 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
910 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
911 [Define 0/1 if vtable verification feature is enabled.])
913 AC_ARG_ENABLE(analyzer,
914 [AS_HELP_STRING([--disable-analyzer],
915 [disable -fanalyzer static analyzer])],
916 if test x$enable_analyzer = xno; then
922 AC_DEFINE_UNQUOTED(ENABLE_ANALYZER, $analyzer,
923 [Define 0/1 if static analyzer feature is enabled.])
925 AC_ARG_ENABLE(objc-gc,
926 [AS_HELP_STRING([--enable-objc-gc],
927 [enable the use of Boehm's garbage collector with
928 the GNU Objective-C runtime])],
929 if test x$enable_objc_gc = xno; then
937 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
938 dwarf2="$with_dwarf2",
941 AC_ARG_ENABLE(shared,
942 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
944 case $enable_shared in
948 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
949 for pkg in $enableval; do
950 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
957 ], [enable_shared=yes])
958 AC_SUBST(enable_shared)
961 [ --disable-gcov don't provide libgcov and related host tools],
962 [], [enable_gcov=yes])
963 AC_SUBST(enable_gcov)
966 [AS_HELP_STRING([--with-specs=SPECS],
967 [add SPECS to driver command-line processing])],
968 [CONFIGURE_SPECS=$withval],
971 AC_SUBST(CONFIGURE_SPECS)
973 ACX_PKGVERSION([GCC])
974 ACX_BUGURL([https://gcc.gnu.org/bugs/])
976 # Allow overriding the default URL for documentation
977 AC_ARG_WITH(documentation-root-url,
978 AS_HELP_STRING([--with-documentation-root-url=URL],
979 [Root for documentation URLs]),
981 yes) AC_MSG_ERROR([documentation root URL not specified]) ;;
982 no) AC_MSG_ERROR([documentation root URL not specified]) ;;
983 */) DOCUMENTATION_ROOT_URL="$withval" ;;
984 *) AC_MSG_ERROR([documentation root URL does not end with /]) ;;
986 DOCUMENTATION_ROOT_URL="https://gcc.gnu.org/onlinedocs/"
988 AC_DEFINE_UNQUOTED(DOCUMENTATION_ROOT_URL,"$DOCUMENTATION_ROOT_URL",
989 [Define to the root for documentation URLs.])
991 # Allow overriding the default URL for GCC changes
992 AC_ARG_WITH(changes-root-url,
993 AS_HELP_STRING([--with-changes-root-url=URL],
994 [Root for GCC changes URLs]),
996 yes) AC_MSG_ERROR([changes root URL not specified]) ;;
997 no) AC_MSG_ERROR([changes root URL not specified]) ;;
998 */) CHANGES_ROOT_URL="$withval" ;;
999 *) AC_MSG_ERROR([changes root URL does not end with /]) ;;
1001 CHANGES_ROOT_URL="https://gcc.gnu.org/"
1003 AC_DEFINE_UNQUOTED(CHANGES_ROOT_URL,"$CHANGES_ROOT_URL",
1004 [Define to the root for URLs about GCC changes.])
1006 # Sanity check enable_languages in case someone does not run the toplevel
1007 # configure # script.
1008 AC_ARG_ENABLE(languages,
1009 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
1010 [case ,${enable_languages}, in
1012 # go safe -- we cannot be much sure without the toplevel
1014 # analysis of which target libs are present and usable
1018 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
1023 enable_languages=c,${enable_languages}
1026 [enable_languages=c])
1028 # If top-level libada has been disabled, then wire in install-gnatlib
1029 # invocation with `make install', so that one can build and install
1030 # the library manually with `make -C gcc all gnatlib gnattools install'.
1031 if test x"$enable_libada" = xno; then
1032 gnat_install_lib=gnat-install-lib
1036 AC_SUBST(gnat_install_lib)
1038 if test x"$enable_as_accelerator_for" != x; then
1039 AC_DEFINE(ACCEL_COMPILER, 1,
1040 [Define if this compiler should be built as the offload target compiler.])
1041 enable_as_accelerator=yes
1044 # In this case we expect offload compiler to be built as native, so we
1045 # need to rename the driver to avoid clashes with host's drivers.
1046 program_transform_name="s&^&${target}-&" ;;
1048 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
1049 program_transform_name=`echo $program_transform_name | sed $sedscript`
1050 accel_dir_suffix=/accel/${target_noncanonical}
1051 real_target_noncanonical=${enable_as_accelerator_for}
1053 AC_SUBST(enable_as_accelerator)
1054 AC_SUBST(real_target_noncanonical)
1055 AC_SUBST(accel_dir_suffix)
1057 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
1058 tgt=`echo $tgt | sed 's/=.*//'`
1062 *-intelmic-* | *-intelmicemul-*)
1063 omp_device_property=omp-device-properties-i386
1064 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/i386/t-omp-device"
1067 omp_device_property=omp-device-properties-gcn
1068 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/gcn/t-omp-device"
1071 omp_device_property=omp-device-properties-nvptx
1072 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/nvptx/t-omp-device"
1075 AC_MSG_ERROR([unknown offload target specified])
1078 omp_device_properties="${omp_device_properties} ${tgt}=${omp_device_property}"
1079 omp_device_property_deps="${omp_device_property_deps} ${omp_device_property}"
1081 if test x"$offload_targets" = x; then
1082 offload_targets=$tgt
1084 offload_targets="$offload_targets,$tgt"
1087 AC_SUBST(omp_device_properties)
1088 AC_SUBST(omp_device_property_deps)
1090 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
1091 [Define to offload targets, separated by commas.])
1092 if test x"$enable_offloading" != x; then
1093 AC_DEFINE(ENABLE_OFFLOADING, 1,
1094 [Define this to enable support for offloading.])
1096 AC_DEFINE(ENABLE_OFFLOADING, 0,
1097 [Define this to enable support for offloading.])
1100 AC_ARG_WITH(multilib-list,
1101 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
1103 with_multilib_list=default)
1105 # -------------------------
1106 # Checks for other programs
1107 # -------------------------
1111 # Find some useful tools
1113 # We need awk to create options.c and options.h.
1114 # Bail out if it's missing.
1116 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1123 AC_SUBST(ranlib_flags)
1127 # See if cmp has --ignore-initial.
1128 gcc_AC_PROG_CMP_IGNORE_INITIAL
1130 # See if we have the mktemp command.
1131 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1133 # See if makeinfo has been installed and is modern enough
1134 # that we can use it.
1135 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1136 [GNU texinfo.* \([0-9][0-9.]*\)],
1137 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1138 if test $gcc_cv_prog_makeinfo_modern = no; then
1140 *** Makeinfo is missing or too old.
1141 *** Info documentation will not be built.])
1146 AC_SUBST(BUILD_INFO)
1148 # Is pod2man recent enough to regenerate manpages?
1149 AC_MSG_CHECKING([for recent Pod::Man])
1150 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1152 GENERATED_MANPAGES=generated-manpages
1157 AC_SUBST(GENERATED_MANPAGES)
1159 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1162 dnl Don't use AC_PROG_LEX; we insist on flex.
1163 dnl LEXLIB is not useful in gcc.
1164 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1167 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1169 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1170 # check for build == host before using them.
1173 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1174 && test -d ../binutils ; then
1175 NM='${objdir}/../binutils/nm-new'
1177 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1181 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1182 && test -d ../binutils ; then
1183 AR='${objdir}/../binutils/ar'
1185 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1188 # The jit documentation looks better if built with sphinx, but can be
1189 # built with texinfo if sphinx is not available.
1190 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1191 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1193 # --------------------
1194 # Checks for C headers
1195 # --------------------
1197 # Need to reject headers which give warnings, so that the -Werror bootstrap
1198 # works later. *sigh* This needs to come before all header checks.
1205 AC_HEADER_TIOCGWINSZ
1206 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1207 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1208 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1209 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1211 # Check for thread headers.
1212 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1213 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1215 # These tests can't be done till we know if we have limits.h.
1219 # ----------------------
1220 # Checks for C++ headers
1221 # ----------------------
1223 dnl Autoconf will give an error in the configure script if there is no
1224 dnl C++ preprocessor. Hack to prevent that.
1225 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1227 m4_popdef([AC_MSG_ERROR])[]dnl
1229 AC_CHECK_HEADERS(unordered_map)
1230 AC_CHECK_HEADERS(tr1/unordered_map)
1231 AC_CHECK_HEADERS(ext/hash_map)
1234 # Dependency checking.
1238 AC_CONFIG_COMMANDS([gccdepdir],[
1239 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1240 for lang in $subdirs c-family common analyzer
1242 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1243 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1245 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1252 # These libraries may be used by collect2.
1253 # We may need a special search path to get them linked.
1254 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1256 for libs in '' -lld -lmld \
1257 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1258 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1261 AC_TRY_LINK_FUNC(ldopen,
1262 [gcc_cv_collect2_libs="$libs"; break])
1265 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1266 case $gcc_cv_collect2_libs in
1268 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1270 AC_SUBST(COLLECT2_LIBS)
1272 # When building Ada code on Alpha, we need exc_resume which is usually in
1273 # -lexc. So test for it.
1276 AC_SEARCH_LIBS(exc_resume, exc)
1279 AC_SUBST(GNAT_LIBEXC)
1281 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1284 AC_SEARCH_LIBS(kstat_open, kstat)
1285 EXTRA_GCC_LIBS="$LIBS"
1287 AC_SUBST(EXTRA_GCC_LIBS)
1289 # Some systems put ldexp and frexp in libm instead of libc; assume
1290 # they're both in the same place. jcf-dump needs them.
1293 AC_SEARCH_LIBS(ldexp, m)
1298 # Some systems need dlopen
1301 AC_SEARCH_LIBS(dlopen, dl)
1306 # Use <inttypes.h> only if it exists,
1307 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1309 AC_MSG_CHECKING(for inttypes.h)
1310 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1311 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1312 [[#define __STDC_FORMAT_MACROS
1313 #include <sys/types.h>
1314 #include <inttypes.h>]],
1319 [gcc_cv_header_inttypes_h=yes],
1320 [gcc_cv_header_inttypes_h=no])])
1321 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1322 if test $gcc_cv_header_inttypes_h = yes; then
1323 AC_DEFINE(HAVE_INTTYPES_H, 1,
1324 [Define if you have a working <inttypes.h> header file.])
1327 # Look for the ZSTD package.
1330 AC_SUBST(ZSTD_INCLUDE)
1334 AC_SUBST(ZSTD_CPPFLAGS)
1335 AC_SUBST(ZSTD_LDFLAGS)
1337 [AS_HELP_STRING([--with-zstd=PATH],
1338 [specify prefix directory for installed zstd library.
1339 Equivalent to --with-zstd-include=PATH/include
1340 plus --with-zstd-lib=PATH/lib])])
1341 AC_ARG_WITH(zstd-include,
1342 [AS_HELP_STRING([--with-zstd-include=PATH],
1343 [specify directory for installed zstd include files])])
1344 AC_ARG_WITH(zstd-lib,
1345 [AS_HELP_STRING([--with-zstd-lib=PATH],
1346 [specify directory for the installed zstd library])])
1347 case "x$with_zstd" in
1353 *) ZSTD_INCLUDE=$with_zstd/include
1354 ZSTD_LIB=$with_zstd/lib
1358 if test "x$with_zstd" != xno; then
1359 if test "x$with_zstd_include" != x; then
1360 ZSTD_INCLUDE=$with_zstd_include
1362 if test "x$with_zstd_lib" != x; then
1363 ZSTD_LIB=$with_zstd_lib
1365 if test "x$ZSTD_INCLUDE" != x \
1366 && test "x$ZSTD_INCLUDE" != xno; then
1367 ZSTD_CPPFLAGS=-I$ZSTD_INCLUDE
1369 if test "x$ZSTD_LIB" != x \
1370 && test "x$ZSTD_LIB" != xno; then
1371 ZSTD_LDFLAGS=-L$ZSTD_LIB
1374 CXXFLAGS="$CXXFLAGS $ZSTD_CPPFLAGS"
1375 LDFLAGS="$LDFLAGS $ZSTD_LDFLAGS"
1377 AC_MSG_CHECKING(for zstd.h)
1378 AC_CACHE_VAL(gcc_cv_header_zstd_h,
1379 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1380 [[#include <zstd.h>]])],
1381 [gcc_cv_header_zstd_h=yes],
1382 [gcc_cv_header_zstd_h=no])])
1383 AC_MSG_RESULT($gcc_cv_header_zstd_h)
1384 if test $gcc_cv_header_zstd_h = yes; then
1385 AC_DEFINE(HAVE_ZSTD_H, 1,
1386 [Define if you have a working <zstd.h> header file.])
1387 elif test "x$with_zstd" != x; then
1388 as_fn_error $? "Unable to find zstd.h. See config.log for details." "$LINENO" 5
1391 # LTO can use zstd compression algorithm
1394 AC_SEARCH_LIBS(ZSTD_compress, zstd)
1400 dnl Disabled until we have a complete test for buggy enum bitfields.
1401 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1403 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1404 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1405 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1406 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1407 putchar_unlocked putc_unlocked)
1408 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1409 popen sysconf strsignal getrusage nl_langinfo \
1410 gettimeofday mbstowcs wcswidth mmap setlocale \
1411 gcc_UNLOCKED_FUNCS madvise mallinfo mallinfo2)
1413 if test x$ac_cv_func_mbstowcs = xyes; then
1414 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1415 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1421 [gcc_cv_func_mbstowcs_works=yes],
1422 [gcc_cv_func_mbstowcs_works=no],
1423 [gcc_cv_func_mbstowcs_works=yes])])
1424 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1425 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1426 [Define this macro if mbstowcs does not crash when its
1427 first argument is NULL.])
1431 AC_CHECK_TYPE(ssize_t, int)
1432 AC_CHECK_TYPE(caddr_t, char *)
1434 GCC_AC_FUNC_MMAP_BLACKLIST
1438 # Under VMS, vfork works very differently than on Unix. The standard test
1439 # won't work, and it isn't easily adaptable. It makes more sense to
1441 ac_cv_func_vfork_works=yes
1448 # Until we have in-tree GNU iconv:
1450 if test -f "$LTLIBICONV"; then
1451 LIBICONV_DEP=$LTLIBICONV
1453 AC_SUBST(LIBICONV_DEP)
1459 # We will need to find libiberty.h and ansidecl.h
1460 saved_CFLAGS="$CFLAGS"
1461 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1462 saved_CXXFLAGS="$CXXFLAGS"
1463 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1465 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1466 # normal autoconf function for these. But force definition of
1467 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1468 # basename handling in libiberty.h.
1469 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1470 #undef HAVE_DECL_BASENAME
1471 #define HAVE_DECL_BASENAME 1
1472 #include "ansidecl.h"
1473 #include "system.h"])
1475 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1476 madvise stpcpy strnlen strsignal strverscmp \
1477 strtol strtoul strtoll strtoull setenv unsetenv \
1478 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1479 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1480 #include "ansidecl.h"
1481 #include "system.h"])
1483 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1484 #include "ansidecl.h"
1486 #ifdef HAVE_SYS_RESOURCE_H
1487 #include <sys/resource.h>
1491 gcc_AC_CHECK_DECLS(mallinfo mallinfo2, , ,[
1492 #include "ansidecl.h"
1494 #ifdef HAVE_MALLOC_H
1499 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1500 #include "ansidecl.h"
1502 #ifdef HAVE_SYS_RESOURCE_H
1503 #include <sys/resource.h>
1505 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1506 [Define to `long' if <sys/resource.h> doesn't define.])])
1508 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1509 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1510 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1511 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1512 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1513 #include "ansidecl.h"
1522 gcc_AC_CHECK_DECLS(times, , ,[
1523 #include "ansidecl.h"
1525 #ifdef HAVE_SYS_TIMES_H
1526 #include <sys/times.h>
1530 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1531 #include "ansidecl.h"
1536 # More time-related stuff.
1537 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1538 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1539 #include "ansidecl.h"
1541 #ifdef HAVE_SYS_TIMES_H
1542 #include <sys/times.h>
1544 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1545 if test $ac_cv_struct_tms = yes; then
1546 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1547 [Define if <sys/times.h> defines struct tms.])
1550 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1551 # revisit after autoconf 2.50.
1552 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1553 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1554 #include "ansidecl.h"
1556 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1557 if test $gcc_cv_type_clock_t = yes; then
1558 AC_DEFINE(HAVE_CLOCK_T, 1,
1559 [Define if <time.h> defines clock_t.])
1562 # Check if F_SETLKW is supported by fcntl.
1563 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1564 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1565 #include <fcntl.h>]], [[
1571 return fcntl (1, F_SETLKW, &fl);]])],
1572 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1573 if test $ac_cv_f_setlkw = yes; then
1574 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1575 [Define if F_SETLKW supported by fcntl.])
1578 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1579 CFLAGS="$saved_CFLAGS"
1580 CXXFLAGS="$saved_CXXFLAGS"
1582 # mkdir takes a single argument on some systems.
1583 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1591 # With Setjmp/Longjmp based exception handling.
1592 AC_ARG_ENABLE(sjlj-exceptions,
1593 [AS_HELP_STRING([--enable-sjlj-exceptions],
1594 [arrange to use setjmp/longjmp exception handling])],
1597 if test $enableval != yes; then
1598 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1603 force_sjlj_exceptions=yes],
1606 force_sjlj_exceptions=yes
1610 force_sjlj_exceptions=yes
1614 force_sjlj_exceptions=no
1617 if test $force_sjlj_exceptions = yes; then
1618 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1619 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1620 [Define 0/1 to force the choice for exception handling model.])
1623 # --------------------------------------------------------
1624 # Build, host, and target specific configuration fragments
1625 # --------------------------------------------------------
1627 # Collect build-machine-specific information.
1628 . ${srcdir}/config.build || exit 1
1630 # Collect host-machine-specific information.
1631 . ${srcdir}/config.host || exit 1
1635 # Collect target-machine-specific information.
1636 . ${srcdir}/config.gcc || exit 1
1638 extra_objs="${host_extra_objs} ${extra_objs}"
1639 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1641 # Default the target-machine variables that were not explicitly set.
1642 if test x"$tm_file" = x
1643 then tm_file=$cpu_type/$cpu_type.h; fi
1645 if test x"$extra_headers" = x
1646 then extra_headers=; fi
1648 if test x$md_file = x
1649 then md_file=$cpu_type/$cpu_type.md; fi
1651 if test x$out_file = x
1652 then out_file=$cpu_type/$cpu_type.c; fi
1654 if test x"$tmake_file" = x
1655 then tmake_file=$cpu_type/t-$cpu_type
1658 # Support --enable-initfini-array.
1659 if test x$enable_initfini_array != xno; then
1660 tm_file="${tm_file} initfini-array.h"
1663 if test x"$dwarf2" = xyes
1664 then tm_file="$tm_file tm-dwarf2.h"
1667 # Say what files are being used for the output code and MD file.
1668 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1669 echo "Using \`$srcdir/config/$md_file' as machine description file."
1671 # If any of the xm_file variables contain nonexistent files, warn
1672 # about them and drop them.
1675 for x in $build_xm_file; do
1676 if test -f $srcdir/config/$x
1678 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1684 for x in $host_xm_file; do
1685 if test -f $srcdir/config/$x
1687 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1693 for x in $xm_file; do
1694 if test -f $srcdir/config/$x
1696 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1702 for f in $tm_file; do
1705 if test $count = ax; then
1706 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1708 echo "Using the following target machine macro files:"
1709 for f in $tm_file; do
1710 echo " $srcdir/config/$f"
1714 if test x$use_long_long_for_widest_fast_int = xyes; then
1715 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1716 [Define to 1 if the 'long long' type is wider than 'long' but still
1717 efficiently supported by the host hardware.])
1720 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1721 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1723 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1724 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1727 for f in $host_xm_file; do
1730 if test $count = a; then
1732 elif test $count = ax; then
1733 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1735 echo "Using the following host machine macro files:"
1736 for f in $host_xm_file; do
1737 echo " $srcdir/config/$f"
1740 echo "Using ${out_host_hook_obj} for host machine hooks."
1742 if test "$host_xm_file" != "$build_xm_file"; then
1744 for f in $build_xm_file; do
1747 if test $count = a; then
1749 elif test $count = ax; then
1750 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1752 echo "Using the following build machine macro files:"
1753 for f in $build_xm_file; do
1754 echo " $srcdir/config/$f"
1759 if test -n "$configured_native_system_header_dir"; then
1760 native_system_header_dir=$configured_native_system_header_dir
1762 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1763 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1767 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1768 gcc_cv_mcontext_underscores,
1769 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1770 #include <sys/cdefs.h>
1771 #include <sys/signal.h>
1772 #include <ucontext.h>
1773 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1775 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1776 if test $gcc_cv_mcontext_underscores = yes; then
1777 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1778 [mcontext_t fields start with __])
1787 # Check if a valid thread package
1788 case ${enable_threads} in
1791 target_thread_file='single'
1795 target_thread_file='single'
1797 aix | dce | lynx | mipssde | posix | rtems | \
1798 single | tpf | vxworks | win32)
1799 target_thread_file=${enable_threads}
1802 echo "${enable_threads} is an unknown thread package" 1>&2
1807 if test x${thread_file} = x; then
1808 # No thread file set by target-specific clauses in config.gcc,
1809 # so use file chosen by default logic above
1810 thread_file=${target_thread_file}
1818 if test x$enable___cxa_atexit = xyes || \
1819 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1820 if test x$host = x$target; then
1822 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1823 # keyed to flag_use_cxa_atexit
1831 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1832 [echo "__cxa_atexit can't be enabled on this target"])
1836 # We can't check for __cxa_atexit when building a cross, so assume
1840 if test x$use_cxa_atexit = xyes; then
1841 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1842 [Define if you want to use __cxa_atexit, rather than atexit, to
1843 register C++ destructors for local statics and global objects.
1844 This is essential for fully standards-compliant handling of
1845 destructors, but requires __cxa_atexit in libc.])
1849 # Look for a file containing extra machine modes.
1850 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1851 extra_modes_file='$(srcdir)'/config/${extra_modes}
1852 AC_SUBST(extra_modes_file)
1853 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1854 [Define to the name of a file containing a list of extra machine modes
1855 for this architecture.])
1858 # Convert extra_options into a form suitable for Makefile use.
1861 for f in $extra_options; do
1862 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1863 all_opt_files="$all_opt_files $srcdir/config/$f"
1865 AC_SUBST(extra_opt_files)
1867 # auto-host.h is the file containing items generated by autoconf and is
1868 # the first file included by config.h.
1869 # If host=build, it is correct to have bconfig include auto-host.h
1870 # as well. If host!=build, we are in error and need to do more
1871 # work to find out the build config parameters.
1872 if test x$host = x$build
1874 build_auto=auto-host.h
1875 HAVE_AUTO_BUILD='# '
1877 # We create a subdir, then run autoconf in the subdir.
1878 # To prevent recursion we set host and build for the new
1879 # invocation of configure to the build for this invocation
1886 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1887 *) realsrcdir=../${srcdir};;
1889 # Clearing GMPINC is necessary to prevent host headers being
1890 # used by the build compiler. Defining GENERATOR_FILE stops
1891 # system.h from including gmp.h.
1892 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1893 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1894 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1895 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1896 ${realsrcdir}/configure \
1897 --enable-languages=${enable_languages-all} \
1898 ${enable_obsolete+--enable-obsolete="$enable_obsolete"} \
1899 ${enable_option_checking+--enable-option-checking="$enable_option_checking"} \
1900 --target=$target_alias --host=$build_alias \
1901 --build=$build_alias || exit # retaining $tempdir
1903 # We just finished tests for the build machine, so rename
1904 # the file auto-build.h in the gcc directory.
1905 mv auto-host.h ../auto-build.h
1908 build_auto=auto-build.h
1911 AC_SUBST(build_subdir)
1912 AC_SUBST(HAVE_AUTO_BUILD)
1914 tm_file="${tm_file} defaults.h"
1915 tm_p_file="${tm_p_file} tm-preds.h"
1916 tm_d_file="${tm_d_file} defaults.h"
1917 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1918 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1919 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1920 # put this back in temporarily.
1921 xm_file="auto-host.h ansidecl.h ${xm_file}"
1928 # Compile in configure arguments.
1929 if test -f configargs.h ; then
1930 # Being re-configured.
1931 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1932 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
1933 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
1934 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1937 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1940 # Double all backslashes and backslash all quotes to turn
1941 # gcc_config_arguments into a C string.
1942 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1943 $gcc_config_arguments
1945 gcc_config_arguments_str=`cat conftest.out`
1948 cat > configargs.h <<EOF
1949 /* Generated automatically. */
1950 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1951 static const char thread_model[] = "$thread_file";
1953 static const struct {
1954 const char *name, *value;
1955 } configure_default_options[] = $configure_default_options;
1960 gcc_BASEVER=`cat $srcdir/BASE-VER`
1961 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1962 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1963 if test -f $srcdir/REVISION ; then
1964 gcc_REVISION=`cat $srcdir/REVISION`
1968 cat > plugin-version.h <<EOF
1969 #include "configargs.h"
1971 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1972 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1973 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1974 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1976 static char basever[] = "$gcc_BASEVER";
1977 static char datestamp[] = "$gcc_DATESTAMP";
1978 static char devphase[] = "$gcc_DEVPHASE";
1979 static char revision[] = "$gcc_REVISION";
1981 /* FIXME plugins: We should make the version information more precise.
1982 One way to do is to add a checksum. */
1984 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1986 configuration_arguments};
1990 # Determine what GCC version number to use in filesystem paths.
1993 # Internationalization
1994 ZW_GNU_GETTEXT_SISTER_DIR
1996 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1997 # -liconv on the link line twice.
1998 case "$LIBINTL" in *$LIBICONV*)
2002 AC_ARG_ENABLE(secureplt,
2003 [AS_HELP_STRING([--enable-secureplt],
2004 [enable -msecure-plt by default for PowerPC])],
2007 AC_ARG_ENABLE(mingw-wildcard,
2008 [AS_HELP_STRING([--enable-mingw-wildcard],
2009 [Set whether to expand wildcard on command-line.
2010 Default to platform configuration])],
2011 [],[enable_mingw_wildcard=platform])
2012 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
2013 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
2014 $(test x"$enable_mingw_wildcard" = xno; echo $?),
2015 [Value to set mingw's _dowildcard to.])])
2017 AC_ARG_ENABLE(large-address-aware,
2018 [AS_HELP_STRING([--enable-large-address-aware],
2019 [Link mingw executables with --large-address-aware])])
2020 AS_IF([test x"$enable_large_address_aware" = xyes],
2021 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
2022 [Define if we should link mingw executables with --large-address-aware])])
2024 AC_ARG_ENABLE(leading-mingw64-underscores,
2025 AS_HELP_STRING([--enable-leading-mingw64-underscores],
2026 [enable leading underscores on 64 bit mingw targets]),
2028 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
2029 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
2030 [Define if we should use leading underscore on 64 bit mingw targets])])
2033 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
2036 AC_ARG_ENABLE(frame-pointer,
2037 [AS_HELP_STRING([--enable-frame-pointer],
2038 [enable -fno-omit-frame-pointer by default for x86])], [],
2041 linux* | gnu* | darwin[[8912]]* | cygwin* | mingw*)
2042 # Enable -fomit-frame-pointer by default for these systems with DWARF2.
2043 enable_frame_pointer=no
2046 enable_frame_pointer=yes
2052 i[[34567]]86-*-* | x86_64-*-*)
2053 if test "x$enable_cld" = xyes; then
2054 tm_defines="${tm_defines} USE_IX86_CLD=1"
2056 if test "x$enable_frame_pointer" = xyes; then
2057 tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1"
2062 # Windows32 Registry support for specifying GCC installation paths.
2063 AC_ARG_ENABLE(win32-registry,
2064 [AS_HELP_STRING([--disable-win32-registry],
2065 [disable lookup of installation paths in the
2066 Registry on Windows hosts])
2067 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
2068 AS_HELP_STRING([--enable-win32-registry=KEY],
2069 [use KEY instead of GCC version as the last portion
2070 of the registry key])],,)
2073 win32 | pe | cygwin* | mingw32*)
2074 if test "x$enable_win32_registry" != xno; then
2075 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
2078 if test "x$enable_win32_registry" != xno; then
2079 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
2080 [Define to 1 if installation paths should be looked up in the Windows
2081 Registry. Ignored on non-Windows hosts.])
2083 if test "x$enable_win32_registry" != xyes \
2084 && test "x$enable_win32_registry" != x; then
2085 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
2086 [Define to be the last component of the Windows registry key under which
2087 to look for installation paths. The full key used will be
2088 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
2089 The default is the GCC version number.])
2095 # Get an absolute path to the GCC top-level source directory
2096 holddir=`${PWDCMD-pwd}`
2098 topdir=`${PWDCMD-pwd}`
2101 # Conditionalize the makefile for this host machine.
2103 for f in ${host_xmake_file}
2105 if test -f ${srcdir}/config/$f
2107 xmake_file="${xmake_file} \$(srcdir)/config/$f"
2111 # Conditionalize the makefile for this target machine.
2113 for f in ${tmake_file}
2115 if test -f ${srcdir}/config/$f
2117 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
2120 tmake_file="${tmake_file_}${omp_device_property_tmake_file}"
2122 out_object_file=`basename $out_file .c`.o
2123 common_out_object_file=`basename $common_out_file .c`.o
2125 tm_file_list="options.h"
2126 tm_include_list="options.h insn-constants.h"
2127 for f in $tm_file; do
2130 f=`echo $f | sed 's/^..//'`
2131 tm_file_list="${tm_file_list} $f"
2132 tm_include_list="${tm_include_list} $f"
2135 tm_file_list="${tm_file_list} \$(srcdir)/$f"
2136 tm_include_list="${tm_include_list} $f"
2139 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
2140 tm_include_list="${tm_include_list} config/$f"
2147 for f in $tm_p_file; do
2150 tm_p_file_list="${tm_p_file_list} $f"
2151 tm_p_include_list="${tm_p_include_list} $f"
2154 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
2155 tm_p_include_list="${tm_p_include_list} config/$f"
2160 tm_d_include_list="options.h insn-constants.h"
2161 for f in $tm_d_file; do
2164 tm_d_file_list="${tm_d_file_list} \$(srcdir)/$f"
2165 tm_d_include_list="${tm_d_include_list} $f"
2168 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
2169 tm_d_include_list="${tm_d_include_list} config/$f"
2176 for f in $xm_file; do
2179 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2180 xm_include_list="${xm_include_list} $f"
2183 xm_file_list="${xm_file_list} $f"
2184 xm_include_list="${xm_include_list} $f"
2187 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2188 xm_include_list="${xm_include_list} config/$f"
2194 host_xm_include_list=
2195 for f in $host_xm_file; do
2198 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2199 host_xm_include_list="${host_xm_include_list} $f"
2202 host_xm_file_list="${host_xm_file_list} $f"
2203 host_xm_include_list="${host_xm_include_list} $f"
2206 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2207 host_xm_include_list="${host_xm_include_list} config/$f"
2213 for f in $build_xm_file; do
2216 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2217 build_xm_include_list="${build_xm_include_list} $f"
2219 auto-build.h | auto-host.h )
2220 build_xm_file_list="${build_xm_file_list} $f"
2221 build_xm_include_list="${build_xm_include_list} $f"
2224 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2225 build_xm_include_list="${build_xm_include_list} config/$f"
2230 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2231 # cross-compiler which does not use the native headers and libraries.
2232 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2233 CROSS= AC_SUBST(CROSS)
2234 ALL=all.internal AC_SUBST(ALL)
2235 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2236 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2238 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2239 test x$build != x$host || test "x$with_build_sysroot" != x; then
2240 if test "x$with_build_sysroot" != x; then
2241 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2243 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2246 if test x$host != x$target
2248 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2250 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2251 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2252 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2255 if test "x$with_build_sysroot" != "x"; then
2256 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2257 elif test "x$with_sysroot" = x; then
2258 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2259 elif test "x$with_sysroot" = xyes; then
2260 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2262 target_header_dir="${with_sysroot}${native_system_header_dir}"
2265 target_header_dir=${native_system_header_dir}
2268 # If this is a cross-compiler that does not
2269 # have its own set of headers then define
2272 # If this is using newlib, without having the headers available now,
2273 # then define inhibit_libc in LIBGCC2_CFLAGS.
2274 # This prevents libgcc2 from containing any code which requires libc
2276 : ${inhibit_libc=false}
2277 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2278 test x$with_newlib = xyes ; } &&
2279 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2282 AC_SUBST(inhibit_libc)
2284 # When building gcc with a cross-compiler, we need to adjust things so
2285 # that the generator programs are still built with the native compiler.
2286 # Also, we cannot run fixincludes.
2288 # These are the normal (build=host) settings:
2289 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2290 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2291 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2292 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2293 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2294 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2296 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2297 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2299 # And these apply if build != host, or we are generating coverage data
2300 if test x$build != x$host || test "x$coverage_flags" != x
2302 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2303 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2304 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2306 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2307 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2308 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2309 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2311 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2312 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2314 # Expand extra_headers to include complete path.
2315 # This substitutes for lots of t-* files.
2317 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2318 for file in ${extra_headers} ; do
2319 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2322 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2323 if test x"$use_gcc_tgmath" = xyes
2324 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2327 # Define collect2 in Makefile.
2328 case $host_can_use_collect2 in
2330 *) collect2='collect2$(exeext)' ;;
2332 AC_SUBST([collect2])
2334 # Add a definition of USE_COLLECT2 if system wants one.
2335 case $use_collect2 in
2336 no) use_collect2= ;;
2339 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2340 xm_defines="${xm_defines} USE_COLLECT2"
2341 case $host_can_use_collect2 in
2343 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2349 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2350 [Define to the name of the LTO plugin DSO that must be
2351 passed to the linker's -plugin=LIB option.])
2353 # ---------------------------
2354 # Assembler & linker features
2355 # ---------------------------
2357 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2358 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2359 # However when ld-new is first executed from the build tree, libtool will
2360 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2361 # to the build tree. While doing this we need to use the previous-stage
2362 # linker, or we have an infinite loop. The presence of a shell script as
2363 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2364 # the gcc/collect-ld script. So we need to know how libtool works, or
2365 # exec-tool will fail.
2367 m4_defun([_LT_CONFIG_COMMANDS], [])
2370 AC_SUBST(enable_fast_install)
2372 # Identify the assembler which will work hand-in-glove with the newly
2373 # built GCC, so that we can examine its features. This is the assembler
2374 # which will be driven by the driver program.
2376 # If build != host, and we aren't building gas in-tree, we identify a
2377 # build->target assembler and hope that it will have the same features
2378 # as the host->target assembler we'll be using.
2379 gcc_cv_gas_major_version=
2380 gcc_cv_gas_minor_version=
2381 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2383 m4_pattern_allow([AS_FOR_TARGET])dnl
2384 AS_VAR_SET_IF(gcc_cv_as,, [
2385 if test -x "$DEFAULT_ASSEMBLER"; then
2386 gcc_cv_as="$DEFAULT_ASSEMBLER"
2387 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2388 && test -f ../gas/Makefile \
2389 && test x$build = x$host; then
2390 gcc_cv_as=../gas/as-new$build_exeext
2391 elif test -x as$build_exeext; then
2392 # Build using assembler in the current directory.
2393 gcc_cv_as=./as$build_exeext
2394 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2395 gcc_cv_as="$AS_FOR_TARGET"
2397 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2400 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2401 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2402 case "$ORIGINAL_AS_FOR_TARGET" in
2403 ./as | ./as$build_exeext) ;;
2404 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2407 AC_MSG_CHECKING(what assembler to use)
2408 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2409 # Single tree build which includes gas. We want to prefer it
2410 # over whatever linker top-level may have detected, since
2411 # we'll use what we're building after installation anyway.
2412 AC_MSG_RESULT(newly built gas)
2414 _gcc_COMPUTE_GAS_VERSION
2415 in_tree_gas_is_elf=no
2416 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2417 || (grep 'obj_format = multi' ../gas/Makefile \
2418 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2420 in_tree_gas_is_elf=yes
2423 AC_MSG_RESULT($gcc_cv_as)
2429 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2430 [case "${enableval}" in
2436 install_gold_as_default=no
2438 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2439 [case "${enableval}" in
2441 install_gold_as_default=yes
2444 if test x${default_ld} != x; then
2445 install_gold_as_default=yes
2451 AC_MSG_ERROR([invalid --enable-gold argument])
2455 # Identify the linker which will work hand-in-glove with the newly
2456 # built GCC, so that we can examine its features. This is the linker
2457 # which will be driven by the driver program.
2459 # If build != host, and we aren't building gas in-tree, we identify a
2460 # build->target linker and hope that it will have the same features
2461 # as the host->target linker we'll be using.
2462 gcc_cv_gld_major_version=
2463 gcc_cv_gld_minor_version=
2464 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2465 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2466 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2468 AS_VAR_SET_IF(gcc_cv_ld,, [
2469 if test -x "$DEFAULT_LINKER"; then
2470 gcc_cv_ld="$DEFAULT_LINKER"
2471 elif test $install_gold_as_default = yes \
2472 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2473 && test -f ../gold/Makefile \
2474 && test x$build = x$host; then
2475 gcc_cv_ld=../gold/ld-new$build_exeext
2476 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2477 && test -f ../ld/Makefile \
2478 && test x$build = x$host; then
2479 gcc_cv_ld=../ld/ld-new$build_exeext
2480 elif test -x collect-ld$build_exeext; then
2481 # Build using linker in the current directory.
2482 gcc_cv_ld=./collect-ld$build_exeext
2483 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2484 gcc_cv_ld="$LD_FOR_TARGET"
2486 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2489 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2490 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2491 # if the PLUGIN_LD is set ld-new, just have it as ld
2492 # as that is the installed named.
2493 if test x$PLUGIN_LD_SUFFIX = xld-new \
2494 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2497 AC_ARG_WITH(plugin-ld,
2498 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2499 [if test x"$withval" != x; then
2500 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2501 PLUGIN_LD_SUFFIX="$withval"
2503 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2504 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2506 # Check to see if we are using gold instead of ld
2507 AC_MSG_CHECKING(whether we are using gold)
2509 if test x$gcc_cv_ld != x; then
2510 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2511 | grep "GNU gold" > /dev/null; then
2515 AC_MSG_RESULT($ld_is_gold)
2517 AC_MSG_CHECKING(gold linker with split stack support as non default)
2518 # Check to see if default ld is not gold, but gold is
2519 # available and has support for split stack. If gcc was configured
2520 # with gold then no checking is done.
2522 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2524 # For platforms other than powerpc64*, enable as appropriate.
2527 ld_gold=`which ${gcc_cv_ld}.gold`
2528 # Make sure this gold has minimal split stack support
2529 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2530 ld_vers=`$ld_gold --version | sed 1q`
2531 gold_vers=`echo $ld_vers | sed -n \
2532 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2534 # check that the gold version contains the complete split stack support
2535 # on powerpc64 big and little endian
2537 case "$gold_vers" in
2538 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2540 *) gold_non_default=no
2546 if test $gold_non_default = yes; then
2547 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2548 [Define if the gold linker supports split stack and is available as a non-default])
2551 AC_MSG_RESULT($gold_non_default)
2553 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2554 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2555 case "$ORIGINAL_LD_FOR_TARGET" in
2556 ./collect-ld | ./collect-ld$build_exeext) ;;
2557 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2560 AC_MSG_CHECKING(what linker to use)
2561 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2562 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2563 # Single tree build which includes ld. We want to prefer it
2564 # over whatever linker top-level may have detected, since
2565 # we'll use what we're building after installation anyway.
2566 AC_MSG_RESULT(newly built ld)
2568 in_tree_ld_is_elf=no
2569 if (grep 'EMUL = .*elf' ../ld/Makefile \
2570 || grep 'EMUL = .*linux' ../ld/Makefile \
2571 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2572 in_tree_ld_is_elf=yes
2573 elif test "$ld_is_gold" = yes; then
2574 in_tree_ld_is_elf=yes
2576 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
2579 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2580 if test x$gcc_cv_gld_version != x; then
2584 case $gcc_cv_gld_version in
2587 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2590 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2591 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2593 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2594 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2596 AC_MSG_RESULT($gcc_cv_ld)
2598 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2599 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2600 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2603 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2604 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2606 # Figure out what nm we will be using.
2607 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2608 AS_VAR_SET_IF(gcc_cv_nm,, [
2609 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2610 && test -f ../binutils/Makefile \
2611 && test x$build = x$host; then
2612 gcc_cv_nm=../binutils/nm-new$build_exeext
2613 elif test -x nm$build_exeext; then
2614 gcc_cv_nm=./nm$build_exeext
2615 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2616 gcc_cv_nm="$NM_FOR_TARGET"
2618 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2621 AC_MSG_CHECKING(what nm to use)
2622 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2623 # Single tree build which includes binutils.
2624 AC_MSG_RESULT(newly built nm)
2627 AC_MSG_RESULT($gcc_cv_nm)
2631 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2632 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2633 case "$ORIGINAL_NM_FOR_TARGET" in
2634 ./nm | ./nm$build_exeext) ;;
2635 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2639 # Figure out what objdump we will be using.
2640 AS_VAR_SET_IF(gcc_cv_objdump,, [
2641 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2642 && test -f ../binutils/Makefile \
2643 && test x$build = x$host; then
2644 # Single tree build which includes binutils.
2645 gcc_cv_objdump=../binutils/objdump$build_exeext
2646 elif test -x objdump$build_exeext; then
2647 gcc_cv_objdump=./objdump$build_exeext
2648 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2649 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2651 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2654 AC_MSG_CHECKING(what objdump to use)
2655 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2656 # Single tree build which includes binutils.
2657 AC_MSG_RESULT(newly built objdump)
2658 elif test x$gcc_cv_objdump = x; then
2659 AC_MSG_RESULT(not found)
2661 AC_MSG_RESULT($gcc_cv_objdump)
2664 # Figure out what readelf we will be using.
2665 AS_VAR_SET_IF(gcc_cv_readelf,, [
2666 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2667 && test -f ../binutils/Makefile \
2668 && test x$build = x$host; then
2669 # Single tree build which includes binutils.
2670 gcc_cv_readelf=../binutils/readelf$build_exeext
2671 elif test -x readelf$build_exeext; then
2672 gcc_cv_readelf=./readelf$build_exeext
2673 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2674 gcc_cv_readelf="$READELF_FOR_TARGET"
2676 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2679 AC_MSG_CHECKING(what readelf to use)
2680 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2681 # Single tree build which includes binutils.
2682 AC_MSG_RESULT(newly built readelf)
2683 elif test x$gcc_cv_readelf = x; then
2684 AC_MSG_RESULT(not found)
2686 AC_MSG_RESULT($gcc_cv_readelf)
2689 # Figure out what otool we will be using.
2690 AS_VAR_SET_IF(gcc_cv_otool,, [
2691 if test -x otool$build_exeext; then
2692 gcc_cv_otool=./otool$build_exeext
2693 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2694 gcc_cv_otool="$OTOOL_FOR_TARGET"
2696 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2699 AC_MSG_CHECKING(what otool to use)
2700 if test x$gcc_cv_otool = x; then
2701 AC_MSG_RESULT(not found)
2703 AC_MSG_RESULT($gcc_cv_otool)
2706 # Figure out what assembler alignment features are present.
2707 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2711 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2712 [Define if your assembler supports .balign and .p2align.])])
2714 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2717 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2718 [Define if your assembler supports specifying the maximum number
2719 of bytes to skip when using the GAS .p2align command.])])
2721 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2724 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2725 [Define if your assembler supports .literal16.])])
2727 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2729 [conftest_label1: .word 0
2731 conftest_label2: .word 0
2733 [if test x$gcc_cv_nm != x; then
2734 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2735 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2736 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2738 else gcc_cv_as_subsection_m1=yes
2740 rm -f conftest.nm1 conftest.nm2
2742 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2743 [Define if your assembler supports .subsection and .subsection -1 starts
2744 emitting at the beginning of your section.])])
2746 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2749 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2751 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2753 [ .weakref foobar, barfnot],,
2754 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2756 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2759 .NSUBSPA $CODE$,COMDAT],,
2760 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2762 # .hidden needs to be supported in both the assembler and the linker,
2763 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2764 # This is irritatingly difficult to feature test for; we have to check the
2765 # date string after the version number. If we've got an in-tree
2766 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2768 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2771 conftest_s=' .globl foobar,hidden'
2774 conftest_s=' .hidden foobar
2778 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2779 [elf,2,13,0],, [$conftest_s])
2782 # Darwin as has some visibility support, though with a different syntax.
2783 gcc_cv_as_hidden=yes
2787 # gnu_indirect_function type is an extension proposed at
2788 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2789 # selection of function implementation
2790 AC_ARG_ENABLE(gnu-indirect-function,
2791 [AS_HELP_STRING([--enable-gnu-indirect-function],
2792 [enable the use of the @gnu_indirect_function to glibc systems])],
2793 [case $enable_gnu_indirect_function in
2795 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2796 Valid choices are 'yes' and 'no'.]) ;;
2798 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2800 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2801 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2802 [Define if your system supports gnu indirect functions.])
2806 if test $in_tree_ld != yes ; then
2807 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2808 if echo "$ld_ver" | grep GNU > /dev/null; then
2809 if test x"$ld_is_gold" = xyes; then
2810 # GNU gold --version looks like this:
2812 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2814 # We extract the binutils version which is more familiar and specific
2815 # than the gold version.
2816 ld_vers=`echo $ld_ver | sed -n \
2817 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2819 # GNU ld --version looks like this:
2821 # GNU ld (GNU Binutils) 2.21.51.20110225
2822 ld_vers=`echo $ld_ver | sed -n \
2823 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2825 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)\(-*\)\([01][0-9]\)\2\([0-3][0-9]\).*$,\1\3\4,p'`
2826 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2827 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2828 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2832 # Solaris 2 ld -V output looks like this for a regular version:
2834 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2836 # but test versions add stuff at the end:
2838 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2840 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
2841 # numbers can be used in ld.so.1 feature checks even if a different
2842 # linker is configured.
2843 ld_ver=`$gcc_cv_ld -V 2>&1`
2844 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2845 ld_vers=`echo $ld_ver | sed -n \
2846 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2847 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2848 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2856 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2857 [[if test $in_tree_ld = yes ; then
2859 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2860 && test $in_tree_ld_is_elf = yes; then
2861 gcc_cv_ld_hidden=yes
2864 gcc_cv_ld_hidden=yes
2865 if test x"$ld_is_gold" = xyes; then
2867 elif echo "$ld_ver" | grep GNU > /dev/null; then
2868 if test 0"$ld_date" -lt 20020404; then
2869 if test -n "$ld_date"; then
2870 # If there was date string, but was earlier than 2002-04-04, fail
2872 elif test -z "$ld_vers"; then
2873 # If there was no date string nor ld version number, something is wrong
2876 test -z "$ld_vers_patch" && ld_vers_patch=0
2877 if test "$ld_vers_major" -lt 2; then
2879 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2880 gcc_cv_ld_hidden="no"
2881 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2889 gcc_cv_ld_hidden=yes
2892 # Darwin ld has some visibility support.
2893 gcc_cv_ld_hidden=yes
2895 hppa64*-*-hpux* | ia64*-*-hpux*)
2896 gcc_cv_ld_hidden=yes
2899 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2900 # .symbolic was only added in Solaris 9 12/02.
2901 gcc_cv_ld_hidden=yes
2909 libgcc_visibility=no
2910 AC_SUBST(libgcc_visibility)
2911 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2912 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2913 libgcc_visibility=yes
2914 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2915 [Define if your assembler and linker support .hidden.])
2918 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2919 gcc_cv_ld_ro_rw_mix=unknown
2920 if test $in_tree_ld = yes ; then
2921 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2922 && test $in_tree_ld_is_elf = yes; then
2923 gcc_cv_ld_ro_rw_mix=read-write
2925 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2926 echo '.section myfoosect, "a"' > conftest1.s
2927 echo '.section myfoosect, "aw"' > conftest2.s
2928 echo '.byte 1' >> conftest2.s
2929 echo '.section myfoosect, "a"' > conftest3.s
2930 echo '.byte 0' >> conftest3.s
2931 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2932 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2933 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2934 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2935 conftest2.o conftest3.o > /dev/null 2>&1; then
2936 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2937 | sed -e '/myfoosect/!d' -e N`
2938 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2939 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2940 gcc_cv_ld_ro_rw_mix=read-only
2942 gcc_cv_ld_ro_rw_mix=read-write
2947 rm -f conftest.* conftest[123].*
2950 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2951 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2952 [Define if your linker links a mix of read-only
2953 and read-write sections into a read-write section.])
2955 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2957 gcc_AC_INITFINI_ARRAY
2959 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2960 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2968 [[# GAS versions before 2.11 do not support uleb128,
2969 # despite appearing to.
2970 # ??? There exists an elf-specific test that will crash
2971 # the assembler. Perhaps it's better to figure out whether
2972 # arbitrary sections are supported and try the test.
2973 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2974 if echo "$as_ver" | grep GNU > /dev/null; then
2975 as_vers=`echo $as_ver | sed -n \
2976 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2977 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2978 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2979 if test $as_major -eq 2 && test $as_minor -lt 11
2981 else gcc_cv_as_leb128=yes
2984 [AC_DEFINE(HAVE_AS_LEB128, 1,
2985 [Define if your assembler supports .sleb128 and .uleb128.])],
2986 [AC_DEFINE(HAVE_AS_LEB128, 0,
2987 [Define if your assembler supports .sleb128 and .uleb128.])])
2989 # Determine if an .eh_frame section is read-only.
2990 gcc_fn_eh_frame_ro () {
2991 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
2992 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2993 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
2996 # Check if we have assembler support for unwind directives.
2997 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
3004 .cfi_escape 1, 2, 3, 4, 5
3008 # If the linker used on Solaris (like Sun ld) isn't capable of merging
3009 # read-only and read-write sections, we need to make sure that the
3010 # assembler used emits read-write .eh_frame sections.
3011 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
3012 gcc_cv_as_cfi_directive=yes
3013 elif test "x$gcc_cv_objdump" = x; then
3014 # No objdump, err on the side of caution.
3015 gcc_cv_as_cfi_directive=no
3017 if test x$gas = xyes; then
3025 sparc*-*-solaris2.*)
3026 # On Solaris/SPARC, .eh_frame sections should always be read-write.
3027 if gcc_fn_eh_frame_ro $as_32_opt \
3028 || gcc_fn_eh_frame_ro $as_64_opt; then
3029 gcc_cv_as_cfi_directive=no
3031 gcc_cv_as_cfi_directive=yes
3034 i?86-*-solaris2.* | x86_64-*-solaris2.*)
3035 # On Solaris/x86, make sure that GCC and assembler agree on using
3036 # read-only .eh_frame sections for 64-bit.
3037 if gcc_fn_eh_frame_ro $as_32_opt; then
3038 gcc_cv_as_cfi_directive=no
3039 elif gcc_fn_eh_frame_ro $as_64_opt; then
3040 gcc_cv_as_cfi_directive=yes
3042 gcc_cv_as_cfi_directive=no
3049 gcc_cv_as_cfi_directive=yes
3052 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
3053 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
3057 .cfi_adjust_cfa_offset 64
3059 .cfi_adjust_cfa_offset 128
3062 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
3063 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
3064 gcc_cv_as_cfi_advance_working=yes
3068 # no objdump, err on the side of caution
3069 gcc_cv_as_cfi_advance_working=no
3071 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
3072 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
3073 [`if test $gcc_cv_as_cfi_directive = yes \
3074 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
3075 [Define 0/1 if your assembler supports CFI directives.])
3077 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
3078 gcc_GAS_CHECK_FEATURE([cfi personality directive],
3079 gcc_cv_as_cfi_personality_directive, ,,
3082 .cfi_personality 0, symbol
3084 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
3085 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
3086 [Define 0/1 if your assembler supports .cfi_personality.])
3088 gcc_GAS_CHECK_FEATURE([cfi sections directive],
3089 gcc_cv_as_cfi_sections_directive, ,,
3091 .cfi_sections .debug_frame, .eh_frame
3095 win32 | pe | cygwin* | mingw32*)
3096 # Need to check that we generated the correct relocation for the
3097 # .debug_frame section. This was fixed for binutils 2.21.
3098 gcc_cv_as_cfi_sections_directive=no
3099 if test "x$gcc_cv_objdump" != x; then
3100 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
3101 grep secrel > /dev/null; then
3102 gcc_cv_as_cfi_sections_directive=yes
3107 gcc_cv_as_cfi_sections_directive=yes
3110 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
3111 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
3112 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
3113 [Define 0/1 if your assembler supports .cfi_sections.])
3115 # GAS versions up to and including 2.11.0 may mis-optimize
3117 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
3125 .section .eh_frame,"aw",@progbits
3127 .4byte .LECIE1-.LSCIE1
3141 .4byte .LEFDE1-.LASFDE1
3143 .4byte .LASFDE1-__FRAME_BEGIN__
3151 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
3152 cat > conftest.lit <<EOF
3153 0000 10000000 00000000 017a0001 781a0004 .........z..x...
3154 0010 01000000 12000000 18000000 00000000 ................
3155 0020 08000000 04080000 0044 .........D @&t@
3157 cat > conftest.big <<EOF
3158 0000 00000010 00000000 017a0001 781a0004 .........z..x...
3159 0010 00000001 00000012 00000018 00000000 ................
3160 0020 00000008 04000000 0844 .........D @&t@
3162 # If the assembler didn't choke, and we can objdump,
3163 # and we got the correct data, then succeed.
3164 # The text in the here-document typically retains its unix-style line
3165 # endings, while the output of objdump will use host line endings.
3166 # Therefore, use diff -b for the comparisons.
3167 if test x$gcc_cv_objdump != x \
3168 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3169 | tail -3 > conftest.got \
3170 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3171 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3173 gcc_cv_as_eh_frame=yes
3174 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3175 gcc_cv_as_eh_frame=buggy
3177 # Uh oh, what do we do now?
3178 gcc_cv_as_eh_frame=no
3181 if test $gcc_cv_as_eh_frame = buggy; then
3182 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3183 [Define if your assembler mis-optimizes .eh_frame data.])
3186 # Test if the assembler supports the section flag 'e' or #exclude for
3187 # specifying an excluded section.
3188 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3189 [2,22,51], [--fatal-warnings],
3192 if test $gcc_cv_as_section_exclude_e = no; then
3194 # Solaris as uses #exclude instead.
3198 conftest_s='.section "foo1", #exclude'
3200 i?86-*-solaris2* | x86_64-*-solaris2*)
3201 conftest_s='.section foo1, #exclude'
3206 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,,
3210 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3211 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3212 [Define if your assembler supports specifying the exclude section flag.])
3214 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3215 [elf,2,12,0], [--fatal-warnings],
3216 [.section .rodata.str, "aMS", @progbits, 1])
3217 if test $gcc_cv_as_shf_merge = no; then
3218 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3219 [elf,2,12,0], [--fatal-warnings],
3220 [.section .rodata.str, "aMS", %progbits, 1])
3222 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3223 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3224 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3226 gcc_cv_ld_aligned_shf_merge=yes
3228 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for
3230 sparc*-*-solaris2.11*)
3231 if test x"$gnu_ld" = xno \
3232 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then
3233 gcc_cv_ld_aligned_shf_merge=no
3237 AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE,
3238 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`],
3239 [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.])
3241 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
3242 [.stabs "gcc2_compiled.",60,0,0,0],,
3243 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
3244 [Define if your assembler supports .stabs.])])
3246 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3247 gcc_cv_as_comdat_group,
3248 [elf,2,16,0], [--fatal-warnings],
3249 [.section .text,"axG",@progbits,.foo,comdat])
3250 if test $gcc_cv_as_comdat_group = yes; then
3251 gcc_cv_as_comdat_group_percent=no
3252 gcc_cv_as_comdat_group_group=no
3254 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3255 gcc_cv_as_comdat_group_percent,
3256 [elf,2,16,0], [--fatal-warnings],
3257 [.section .text,"axG",%progbits,.foo,comdat])
3258 if test $gcc_cv_as_comdat_group_percent = yes; then
3259 gcc_cv_as_comdat_group_group=no
3262 # Sun as uses a completely different syntax.
3267 .group foo,".text%foo",#comdat
3268 .section ".text%foo", #alloc,#execinstr,#progbits
3273 i?86-*-solaris2* | x86_64-*-solaris2*)
3275 .group foo,.text%foo,#comdat
3276 .section .text%foo, "ax", @progbits
3282 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3283 gcc_cv_as_comdat_group_group,
3287 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3288 gcc_cv_as_comdat_group_group=no
3292 if test x"$ld_is_gold" = xyes; then
3294 elif test $in_tree_ld = yes ; then
3296 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3297 && test $in_tree_ld_is_elf = yes; then
3300 elif echo "$ld_ver" | grep GNU > /dev/null; then
3302 if test 0"$ld_date" -lt 20050308; then
3303 if test -n "$ld_date"; then
3304 # If there was date string, but was earlier than 2005-03-08, fail
3306 elif test "$ld_vers_major" -lt 2; then
3308 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3315 *-*-solaris2.1[1-9]*)
3317 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3318 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3321 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3322 # least ld version 1.2267.
3323 if test "$ld_vers_major" -gt 1; then
3325 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3327 elif test "$ld_vers_minor" -ge 2267; then
3332 # Assume linkers other than GNU ld don't support COMDAT group.
3338 # Allow overriding the automatic COMDAT group tests above.
3339 AC_ARG_ENABLE(comdat,
3340 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3341 [comdat_group="$enable_comdat"])
3342 if test $comdat_group = no; then
3343 gcc_cv_as_comdat_group=no
3344 gcc_cv_as_comdat_group_percent=no
3345 gcc_cv_as_comdat_group_group=no
3347 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3348 [`if test $gcc_cv_as_comdat_group = yes \
3349 || test $gcc_cv_as_comdat_group_percent = yes \
3350 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3351 [Define 0/1 if your assembler and linker support COMDAT groups.])
3353 # Restrict this test to Solaris/x86: other targets define this statically.
3355 i?86-*-solaris2* | x86_64-*-solaris2*)
3356 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3357 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3361 # Full support for hidden thunks in linkonce sections only appeared in
3362 # Solaris 11/OpenSolaris.
3363 *-*-solaris2.1[[1-9]]*)
3371 AC_MSG_RESULT($hidden_linkonce)
3372 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3373 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3374 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3378 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3383 .loc 1 1 0 is_stmt 1],,
3384 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3385 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3387 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3388 gcc_cv_as_discriminator,
3392 .loc 1 1 0 discriminator 1],,
3393 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3394 [Define if your assembler supports the .loc discriminator sub-directive.])])
3396 # Catch the newlib flag of the same name so we can gate GCC features on it.
3397 AC_ARG_ENABLE(newlib-nano-formatted-io,
3398 [AS_HELP_STRING([--enable-newlib-nano-formatted-io], [Use nano version
3400 [case "${enableval}" in
3404 AC_MSG_ERROR([unknown newlib-nano-formatted-io setting $enableval])
3408 # Thread-local storage - the check is heavily parameterized.
3417 .section ".tdata","awT",@progbits
3420 ldq $27,__tls_get_addr($29) !literal!1
3421 lda $16,foo($29) !tlsgd!1
3422 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3423 ldq $27,__tls_get_addr($29) !literal!2
3424 lda $16,foo($29) !tlsldm!2
3425 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3426 ldq $1,foo($29) !gotdtprel
3427 ldah $2,foo($29) !dtprelhi
3428 lda $3,foo($2) !dtprello
3429 lda $4,foo($29) !dtprel
3430 ldq $1,foo($29) !gottprel
3431 ldah $2,foo($29) !tprelhi
3432 lda $3,foo($2) !tprello
3433 lda $4,foo($29) !tprel'
3436 tls_as_opt=--fatal-warnings
3440 add_s r0,r0, @foo@tpoff'
3444 cris-*-*|crisv32-*-*)
3446 .section ".tdata","awT",@progbits
3453 tls_as_opt=--fatal-warnings
3457 .section ".tdata","awT",@progbits
3469 .section ".tdata","awT",@progbits
3473 addil LT%foo-$tls_gdidx$,gp
3474 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3477 addil LT%foo-$tls_ldidx$,gp
3479 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3480 addil LR%foo-$tls_dtpoff$,%ret0
3481 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3483 addil LT%foo-$tls_ieoff$,gp
3484 ldw RT%foo-$tls_ieoff$(%r1),%t2
3487 addil LR%foo-$tls_leoff$,%t1
3488 ldo RR%foo-$tls_leoff$(%r1),%t2'
3491 tls_as_opt=--fatal-warnings
3495 .section ".tdata","awT",%progbits
3506 i[34567]86-*-* | x86_64-*-*)
3508 i[34567]86-*-solaris2.* | x86_64-*-solaris2.*)
3515 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3517 .section .tdata,"awt",@progbits'
3522 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3523 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3527 .section ".tdata","awT",@progbits'
3531 tls_as_opt="--fatal-warnings"
3535 if test x$on_solaris = xyes; then
3537 yes) tls_as_opt="$tls_as_opt --32" ;;
3540 conftest_s="$conftest_s
3544 leal foo@tlsgd(,%ebx,1), %eax
3545 leal foo@tlsldm(%ebx), %eax
3546 leal foo@dtpoff(%eax), %edx
3547 movl foo@gottpoff(%ebx), %eax
3548 subl foo@gottpoff(%ebx), %eax
3549 addl foo@gotntpoff(%ebx), %eax
3550 movl foo@indntpoff, %eax
3551 movl \$foo@tpoff, %eax
3552 subl \$foo@tpoff, %eax
3553 leal foo@ntpoff(%ecx), %eax"
3556 if test x$on_solaris = xyes; then
3558 yes) tls_as_opt="$tls_as_opt --64" ;;
3559 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3562 conftest_s="$conftest_s
3566 leaq foo@tlsgd(%rip), %rdi
3567 leaq foo@tlsld(%rip), %rdi
3568 leaq foo@dtpoff(%rax), %rdx
3569 movq foo@gottpoff(%rip), %rax
3570 movq \$foo@tpoff, %rax"
3576 .section ".tdata","awT",@progbits
3579 addl r16 = @ltoff(@dtpmod(foo#)), gp
3580 addl r17 = @ltoff(@dtprel(foo#)), gp
3581 addl r18 = @ltoff(@tprel(foo#)), gp
3582 addl r19 = @dtprel(foo#), gp
3583 adds r21 = @dtprel(foo#), r13
3584 movl r23 = @dtprel(foo#)
3585 addl r20 = @tprel(foo#), gp
3586 adds r22 = @tprel(foo#), r13
3587 movl r24 = @tprel(foo#)'
3590 tls_as_opt=--fatal-warnings
3594 .section .tdata,"awT",@progbits
3598 addik r5,r20,x@TLSGD
3599 addik r5,r20,x@TLSLDM'
3602 tls_as_opt='--fatal-warnings'
3606 .section .tdata,"awT",@progbits
3610 addiu $4, $28, %tlsgd(x)
3611 addiu $4, $28, %tlsldm(x)
3612 lui $4, %dtprel_hi(x)
3613 addiu $4, $4, %dtprel_lo(x)
3614 lw $4, %gottprel(x)($28)
3615 lui $4, %tprel_hi(x)
3616 addiu $4, $4, %tprel_lo(x)'
3619 tls_as_opt='-32 --fatal-warnings'
3623 .section .tdata,"awT",@progbits
3628 move.l x@TLSGD(%a5),%a0
3629 move.l x@TLSLDM(%a5),%a0
3630 move.l x@TLSLDO(%a5),%a0
3631 move.l x@TLSIE(%a5),%a0
3632 move.l x@TLSLE(%a5),%a0'
3635 tls_as_opt='--fatal-warnings'
3639 .section ".tdata","awT",@progbits'
3642 tls_as_opt="--fatal-warnings"
3646 .section ".tdata","awT",%progbits
3650 add x0, x0, #:tlsgd_lo12:x
3655 tls_as_opt='--fatal-warnings'
3659 .section ".tdata","awT",@progbits
3662 l.movhi r3, tpoffha(foo)
3664 l.lwz r4, tpofflo(foo)(r3)'
3667 tls_as_opt=--fatal-warnings
3671 .extern __get_tpointer
3689 .section ".tdata","awT",@progbits
3697 addi 3,2,ld0@got@tlsgd
3703 addi 3,2,x1@got@tlsld
3709 addis 9,3,x2@dtprel@ha
3710 addi 9,9,x2@dtprel@l
3713 ld 9,x3@got@dtprel(2)
3719 tls_as_opt="-a64 --fatal-warnings"
3723 .section ".tdata","awT",@progbits
3731 addi 3,31,ld0@got@tlsgd
3733 addi 3,31,x1@got@tlsld
3736 addis 9,3,x2@dtprel@ha
3737 addi 9,9,x2@dtprel@l
3738 lwz 9,x3@got@tprel(31)
3741 addis 9,2,x2@tprel@ha
3742 addi 9,9,x2@tprel@l'
3745 tls_as_opt="-a32 --fatal-warnings"
3749 .section .tdata,"awT",@progbits
3753 call __tls_get_addr'
3756 tls_as_opt='--fatal-warnings'
3760 .section ".tdata","awT",@progbits
3769 l %r1,foo@GOTNTPOFF(%r12)
3770 l %r1,0(%r1):tls_load:foo
3771 bas %r14,0(%r1,%r13):tls_gdcall:foo
3772 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3775 tls_as_opt="-m31 --fatal-warnings"
3779 .section ".tdata","awT",@progbits
3787 lg %r1,foo@GOTNTPOFF(%r12)
3788 larl %r1,foo@INDNTPOFF
3789 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3790 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3793 tls_as_opt="-m64 -Aesame --fatal-warnings"
3795 sh-*-* | sh[123456789lbe]*-*-*)
3797 .section ".tdata","awT",@progbits
3807 tls_as_opt=--fatal-warnings
3811 sparc*-sun-solaris2.*)
3818 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3820 .section ".tdata",#alloc,#write,#tls'
3825 .section ".tdata","awT",@progbits'
3828 tls_as_opt="-32 --fatal-warnings"
3830 conftest_s="$conftest_s
3833 sethi %tgd_hi22(foo), %o0
3834 add %o0, %tgd_lo10(foo), %o1
3835 add %l7, %o1, %o0, %tgd_add(foo)
3836 call __tls_get_addr, %tgd_call(foo)
3837 sethi %tldm_hi22(foo), %l1
3838 add %l1, %tldm_lo10(foo), %l2
3839 add %l7, %l2, %o0, %tldm_add(foo)
3840 call __tls_get_addr, %tldm_call(foo)
3841 sethi %tldo_hix22(foo), %l3
3842 xor %l3, %tldo_lox10(foo), %l4
3843 add %o0, %l4, %l5, %tldo_add(foo)
3844 sethi %tie_hi22(foo), %o3
3845 add %o3, %tie_lo10(foo), %o3
3846 ld [%l7 + %o3], %o2, %tie_ld(foo)
3847 add %g7, %o2, %o4, %tie_add(foo)
3848 sethi %tle_hix22(foo), %l1
3849 xor %l1, %tle_lox10(foo), %o5
3850 ld [%g7 + %o5], %o1"
3854 .section ".tdata","awT",@progbits
3857 addli r0, zero, tls_gd(foo)
3858 auli r0, zero, tls_gd_ha16(foo)
3859 addli r0, r0, tls_gd_lo16(foo)
3861 addli r0, zero, tls_ie(foo)
3862 auli r0, r0, tls_ie_ha16(foo)
3863 addli r0, r0, tls_ie_lo16(foo)'
3866 tls_as_opt="--fatal-warnings"
3870 .section ".tdata","awT",@progbits
3873 shl16insli r0, zero, hw0_last_tls_gd(foo)
3874 shl16insli r0, zero, hw1_last_tls_gd(foo)
3875 shl16insli r0, r0, hw0_tls_gd(foo)
3877 shl16insli r0, zero, hw1_last_tls_ie(foo)
3878 shl16insli r0, r0, hw0_tls_ie(foo)'
3881 tls_as_opt="--fatal-warnings"
3885 .section ".tdata","awT",@progbits
3888 movi a8, foo@TLSFUNC
3889 movi a10, foo@TLSARG
3890 callx8.tls a8, foo@TLSCALL'
3897 if test "x$enable_tls" = xno ; then
3898 : # TLS explicitly disabled.
3899 elif test "x$enable_tls" = xyes ; then
3900 set_have_as_tls=yes # TLS explicitly enabled.
3901 elif test -z "$tls_first_major"; then
3902 : # If we don't have a check, assume no support.
3904 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3905 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3906 [set_have_as_tls=yes])
3908 if test $set_have_as_tls = yes ; then
3909 AC_DEFINE(HAVE_AS_TLS, 1,
3910 [Define if your assembler and linker support thread-local storage.])
3913 # Target-specific assembler checks.
3915 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3916 gcc_cv_ld_static_dynamic=no
3917 gcc_cv_ld_static_option='-Bstatic'
3918 gcc_cv_ld_dynamic_option='-Bdynamic'
3919 if test $in_tree_ld = yes ; then
3920 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3921 gcc_cv_ld_static_dynamic=yes
3923 elif test x$gcc_cv_ld != x; then
3924 # Check if linker supports -Bstatic/-Bdynamic option
3925 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
3926 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
3927 gcc_cv_ld_static_dynamic=yes
3930 # AIX ld uses -b flags
3931 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3932 gcc_cv_ld_static_dynamic=yes
3933 gcc_cv_ld_static_option="-bstatic"
3934 gcc_cv_ld_dynamic_option="-bdynamic"
3936 # HP-UX ld uses -a flags to select between shared and archive.
3938 if test x"$gnu_ld" = xno; then
3939 gcc_cv_ld_static_dynamic=yes
3940 gcc_cv_ld_static_option="-aarchive_shared"
3941 gcc_cv_ld_dynamic_option="-adefault"
3944 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3946 gcc_cv_ld_static_dynamic=yes
3951 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3952 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3953 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3954 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3955 [Define to the linker option to disable use of shared objects.])
3956 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3957 [Define to the linker option to enable use of shared objects.])
3959 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3961 AC_MSG_CHECKING(linker --version-script option)
3962 gcc_cv_ld_version_script=no
3963 ld_version_script_option=''
3964 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3965 gcc_cv_ld_version_script=yes
3966 ld_version_script_option='--version-script'
3967 elif test x$gcc_cv_ld != x; then
3969 # Solaris 2 ld always supports -M. It also supports a subset of
3970 # --version-script since Solaris 11.4, but requires
3971 # -z gnu-version-script-compat to activate.
3973 gcc_cv_ld_version_script=yes
3974 ld_version_script_option='-M'
3978 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3979 AC_MSG_RESULT($gcc_cv_ld_version_script)
3980 AC_SUBST(ld_version_script_option)
3982 AC_MSG_CHECKING(linker soname option)
3984 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3985 gcc_cv_ld_soname=yes
3986 ld_soname_option='-soname'
3987 elif test x$gcc_cv_ld != x; then
3990 gcc_cv_ld_soname=yes
3991 ld_soname_option='-install_name'
3993 # Solaris 2 ld always supports -h. It also supports --soname for GNU
3994 # ld compatiblity since some Solaris 10 update.
3996 gcc_cv_ld_soname=yes
3997 ld_soname_option='-h'
4001 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4002 AC_MSG_RESULT($gcc_cv_ld_soname)
4003 AC_SUBST(ld_soname_option)
4005 if test x"$demangler_in_ld" = xyes; then
4006 AC_MSG_CHECKING(linker --demangle support)
4007 gcc_cv_ld_demangle=no
4008 if test $in_tree_ld = yes; then
4009 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
4010 gcc_cv_ld_demangle=yes
4012 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
4013 # Check if the GNU linker supports --demangle option
4014 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
4015 gcc_cv_ld_demangle=yes
4018 if test x"$gcc_cv_ld_demangle" = xyes; then
4019 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
4020 [Define if your linker supports --demangle option.])
4022 AC_MSG_RESULT($gcc_cv_ld_demangle)
4025 AC_MSG_CHECKING(linker plugin support)
4027 if test -f liblto_plugin.la; then
4028 save_ld_ver="$ld_ver"
4029 save_ld_vers_major="$ld_vers_major"
4030 save_ld_vers_minor="$ld_vers_minor"
4031 save_ld_is_gold="$ld_is_gold"
4035 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
4037 # FIXME: ld_is_gold?
4038 ld_vers_major="$gcc_cv_gld_major_version"
4039 ld_vers_minor="$gcc_cv_gld_minor_version"
4041 # Determine plugin linker version.
4042 # FIXME: Partial duplicate from above, generalize.
4044 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
4045 if echo "$ld_ver" | grep GNU > /dev/null; then
4046 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
4048 ld_vers=`echo $ld_ver | sed -n \
4049 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
4051 ld_vers=`echo $ld_ver | sed -n \
4052 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
4054 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
4055 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
4060 # Determine plugin support.
4061 if echo "$ld_ver" | grep GNU > /dev/null; then
4062 # Require GNU ld or gold 2.21+ for plugin support by default.
4063 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
4065 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
4066 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
4071 ld_ver="$save_ld_ver"
4072 ld_vers_major="$save_ld_vers_major"
4073 ld_vers_minor="$save_ld_vers_minor"
4074 ld_is_gold="$save_ld_is_gold"
4076 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
4077 [Define to the level of your linker's plugin support.])
4078 AC_MSG_RESULT($gcc_cv_lto_plugin)
4080 # Target OS-specific assembler checks.
4082 case "$target_os" in
4084 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
4085 gcc_cv_as_mmacosx_version_min,,
4086 [-mmacosx-version-min=10.1], [.text],,
4087 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
4088 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
4092 # Target CPU-specific assembler checks.
4096 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
4097 [-mabi=lp64], [.text],,,)
4098 if test x$gcc_cv_as_aarch64_mabi = xyes; then
4099 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
4100 [Define if your assembler supports the -mabi option.])
4102 if test x$with_abi = xilp32; then
4103 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4104 Upgrade the Assembler.])
4106 if test x"$with_multilib_list" = xdefault; then
4107 TM_MULTILIB_CONFIG=lp64
4109 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
4110 for aarch64_multilib in ${aarch64_multilibs}; do
4111 case ${aarch64_multilib} in
4113 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4114 Upgrade the Assembler.])
4122 # Check if we have binutils support for relocations types needed by -fpic
4123 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
4126 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
4127 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
4128 [Define if your assembler supports relocs needed by -fpic.])])
4129 # Enable Branch Target Identification Mechanism and Return Address
4130 # Signing by default.
4131 AC_ARG_ENABLE(standard-branch-protection,
4133 AS_HELP_STRING([--enable-standard-branch-protection],
4134 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4135 AS_HELP_STRING([--disable-standard-branch-protection],
4136 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4141 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1"
4146 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
4147 Valid choices are 'yes' and 'no'.])
4152 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
4153 AC_ARG_ENABLE(fix-cortex-a53-835769,
4155 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
4156 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4157 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
4158 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4163 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4168 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4169 Valid choices are 'yes' and 'no'.])
4175 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4176 AC_ARG_ENABLE(fix-cortex-a53-843419,
4178 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4179 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4180 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4181 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4186 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4191 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4192 Valid choices are 'yes' and 'no'.])
4200 # All TARGET_ABI_OSF targets.
4201 alpha*-*-linux* | alpha*-*-*bsd*)
4202 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4203 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
4206 extbl $3, $2, $3 !lituse_bytoff!1
4207 ldq $2, a($29) !literal!1
4208 ldq $4, b($29) !literal!2
4209 ldq_u $3, 0($2) !lituse_base!1
4210 ldq $27, f($29) !literal!5
4211 jsr $26, ($27), f !lituse_jsr!5
4212 ldah $29, 0($26) !gpdisp!3
4213 lda $0, c($29) !gprel
4214 ldah $1, d($29) !gprelhigh
4215 lda $1, d($1) !gprellow
4216 lda $29, 0($29) !gpdisp!3],,
4217 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4218 [Define if your assembler supports explicit relocations.])])
4219 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4220 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
4223 ldq $27, a($29) !literal!1
4224 jsr $26, ($27), a !lituse_jsrdirect!1],,
4225 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4226 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4230 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
4231 [--mlink-relax], [.text],,
4232 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4233 [Define if your avr assembler supports --mlink-relax option.])])
4235 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
4237 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4238 [Define if your avr assembler supports -mrmw option.])])
4240 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4241 gcc_cv_as_avr_mgccisr,,
4247 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4248 [Define if your avr assembler supports -mgcc-isr option.])])
4250 # Check how default linker description file implements .rodata for
4251 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4252 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4253 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4254 cat > conftest.s <<EOF
4255 .section .rodata,"a",@progbits
4257 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4262 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4263 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4264 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4265 if test -s conftest.nm
4267 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4269 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4270 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4272 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4273 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4274 cat conftest.nm >&AS_MESSAGE_LOG_FD
4275 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4276 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4279 AC_MSG_RESULT(test failed)
4280 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4281 cat conftest.s >&AS_MESSAGE_LOG_FD
4282 AC_MSG_WARN([[see `config.log' for details]])
4284 rm -f conftest.s conftest.o conftest.elf conftest.nm
4288 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4289 gcc_cv_as_cris_no_mul_bug,[2,15,91],
4290 [-no-mul-bug-abort], [.text],,
4291 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4292 [Define if your assembler supports the -no-mul-bug-abort option.])])
4296 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
4298 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4299 [Define if your assembler supports -relax option.])])
4301 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4302 gcc_cv_as_sparc_gotdata_op,,
4309 sethi %gdop_hix22(foo), %g1
4310 xor %g1, %gdop_lox10(foo), %g1
4311 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4312 [if test x$gcc_cv_ld != x \
4313 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4314 if test x$gcc_cv_objdump != x; then
4315 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4316 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4317 gcc_cv_as_sparc_gotdata_op=no
4319 gcc_cv_as_sparc_gotdata_op=yes
4324 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4325 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4327 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4328 gcc_cv_as_sparc_ua_pcrel,,
4336 .uaword %r_disp32(foo)],
4337 [if test x$gcc_cv_ld != x \
4338 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4339 gcc_cv_as_sparc_ua_pcrel=yes
4342 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4343 [Define if your assembler and linker support unaligned PC relative relocs.])
4345 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4346 gcc_cv_as_sparc_ua_pcrel_hidden,,
4351 .uaword %r_disp32(foo)
4352 .byte 0x32, 0x33, 0x34
4357 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4358 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4359 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4360 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4361 if $gcc_cv_objdump -R conftest 2> /dev/null \
4362 | grep 'DISP32' > /dev/null 2>&1; then
4365 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4369 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4370 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4371 ]) # unaligned pcrel relocs
4373 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4374 gcc_cv_as_sparc_offsetable_lo10,,
4377 or %g1, %lo(ab) + 12, %g1
4378 or %g1, %lo(ab + 12), %g1],
4379 [if test x$gcc_cv_objdump != x \
4380 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4381 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4382 gcc_cv_as_sparc_offsetable_lo10=yes
4384 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4385 [Define if your assembler supports offsetable %lo().])])
4387 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4388 gcc_cv_as_sparc_fmaf,,
4391 .register %g2, #scratch
4392 .register %g3, #scratch
4394 fmaddd %f0, %f2, %f4, %f6
4395 addxccc %g1, %g2, %g3
4396 fsrl32 %f2, %f4, %f8
4397 fnaddd %f10, %f12, %f14],,
4398 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4399 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4401 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4402 gcc_cv_as_sparc_sparc4,,
4405 .register %g2, #scratch
4406 .register %g3, #scratch
4409 1: cwbneg %g2, %g3, 1f
4412 aes_kexpand0 %f4, %f6, %f8
4413 des_round %f38, %f40, %f42, %f44
4414 camellia_f %f54, %f56, %f58, %f60
4415 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4416 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4417 [Define if your assembler supports SPARC4 instructions.])])
4419 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4420 gcc_cv_as_sparc_sparc5,,
4423 .register %g2, #scratch
4424 .register %g3, #scratch
4427 fpadd8 %f0, %f2, %f4],,
4428 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4429 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4431 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4432 gcc_cv_as_sparc_sparc6,,
4435 .register %g2, #scratch
4436 .register %g3, #scratch
4439 fpsll64x %f0, %f2, %f4],,
4440 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4441 [Define if your assembler supports SPARC6 instructions.])])
4443 gcc_GAS_CHECK_FEATURE([LEON instructions],
4444 gcc_cv_as_sparc_leon,,
4447 .register %g2, #scratch
4448 .register %g3, #scratch
4452 casa [[%g2]] 0xb, %g3, %g1],,
4453 [AC_DEFINE(HAVE_AS_LEON, 1,
4454 [Define if your assembler supports LEON instructions.])])
4458 i[34567]86-*-* | x86_64-*-*)
4462 # Full C++ conformance when using a shared libstdc++-v3 requires some
4463 # support from the Cygwin DLL, which in more recent versions exports
4464 # wrappers to aid in interposing and redirecting operators new, delete,
4465 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4466 # are configuring for a version of Cygwin that exports the wrappers.
4467 if test x$host = x$target && test x$host_cpu = xi686; then
4468 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4470 # Can't check presence of libc functions during cross-compile, so
4471 # we just have to assume we're building for an up-to-date target.
4472 gcc_ac_cygwin_dll_wrappers=yes
4474 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4475 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4476 [Define if you want to generate code by default that assumes that the
4477 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4480 cygwin* | pe | mingw32*)
4481 # Recent binutils allows the three-operand form of ".comm" on PE. This
4482 # definition is used unconditionally to initialise the default state of
4483 # the target option variable that governs usage of the feature.
4484 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4485 [2,19,52],,[.comm foo,1,32])
4486 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4487 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4488 [Define if your assembler supports specifying the alignment
4489 of objects allocated using the GAS .comm command.])
4490 # Used for DWARF 2 in PE
4491 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4492 gcc_cv_as_ix86_pe_secrel32,
4498 [if test x$gcc_cv_ld != x \
4499 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4500 gcc_cv_as_ix86_pe_secrel32=yes
4503 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4504 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4505 # Test if the assembler supports the extended form of the .section
4506 # directive that specifies section alignment. LTO support uses this,
4507 # but normally only after installation, so we warn but don't fail the
4508 # configure if LTO is enabled but the assembler does not support it.
4509 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4510 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4511 if test x$gcc_cv_as_section_has_align != xyes; then
4512 case ",$enable_languages," in
4514 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4521 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,,
4522 [-xbrace_comment=no], [.text],,
4523 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4524 [Define if your assembler supports -xbrace_comment option.])])
4526 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4527 gcc_cv_as_ix86_filds,,,
4528 [filds (%ebp); fists (%ebp)],,
4529 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4530 [Define if your assembler uses filds and fists mnemonics.])])
4532 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4533 gcc_cv_as_ix86_fildq,,,
4534 [fildq (%ebp); fistpq (%ebp)],,
4535 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4536 [Define if your assembler uses fildq and fistq mnemonics.])])
4538 gcc_GAS_CHECK_FEATURE([cmov syntax],
4539 gcc_cv_as_ix86_cmov_sun_syntax,,,
4540 [cmovl.l %edx, %eax],,
4541 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4542 [Define if your assembler supports the Sun syntax for cmov.])])
4544 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4545 gcc_cv_as_ix86_ffreep,,,
4547 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4548 [Define if your assembler supports the ffreep mnemonic.])])
4550 gcc_GAS_CHECK_FEATURE([.quad directive],
4551 gcc_cv_as_ix86_quad,,,
4553 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4554 [Define if your assembler supports the .quad directive.])])
4556 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4557 gcc_cv_as_ix86_sahf,,,
4560 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4561 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4563 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4564 gcc_cv_as_ix86_interunit_movq,,,
4568 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4569 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4570 [Define if your assembler supports interunit movq mnemonic.])
4572 gcc_GAS_CHECK_FEATURE([hle prefixes],
4573 gcc_cv_as_ix86_hle,,,
4574 [lock xacquire cmpxchg %esi, (%ecx)],,
4575 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4576 [Define if your assembler supports HLE prefixes.])])
4578 gcc_GAS_CHECK_FEATURE([swap suffix],
4579 gcc_cv_as_ix86_swap,,,
4580 [movl.s %esp, %ebp],,
4581 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4582 [Define if your assembler supports the swap suffix.])])
4584 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4585 gcc_cv_as_ix86_diff_sect_delta,,,
4593 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4594 [Define if your assembler supports the subtraction of symbols in different sections.])])
4596 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4597 gcc_cv_as_ix86_rep_lock_prefix,,,
4603 lock addl %edi, (%eax,%esi)
4604 lock orl $0, (%esp)],,
4605 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4606 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4608 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4609 gcc_cv_as_ix86_ud2,,,
4611 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4612 [Define if your assembler supports the 'ud2' mnemonic.])])
4614 # Enforce 32-bit output with gas and gld.
4615 if test x$gas = xyes; then
4616 as_ix86_gas_32_opt="--32"
4618 if echo "$ld_ver" | grep GNU > /dev/null; then
4619 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4620 ld_ix86_gld_32_opt="-melf_i386_sol2"
4622 ld_ix86_gld_32_opt="-melf_i386"
4626 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4627 gcc_cv_as_ix86_tlsgdplt,,
4628 [$as_ix86_gas_32_opt],
4629 [call tls_gd@tlsgdplt],
4630 [if test x$gcc_cv_ld != x \
4631 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4632 gcc_cv_as_ix86_tlsgdplt=yes
4635 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4636 [Define if your assembler and linker support @tlsgdplt.])])
4639 .section .tdata,"aw'$tls_section_flag'",@progbits
4641 .section .text,"ax",@progbits
4642 call tls_ld@tlsldmplt'
4644 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4645 gcc_cv_as_ix86_tlsldmplt,,
4646 [$as_ix86_gas_32_opt],
4648 [if test x$gcc_cv_ld != x \
4649 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4650 gcc_cv_as_ix86_tlsldmplt=yes
4653 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4654 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4655 [Define to 1 if your assembler and linker support @tlsldmplt.])
4658 .section .text,"ax",@progbits
4660 .type _start, @function
4662 leal value@tlsldm(%ebx), %eax
4663 call ___tls_get_addr@plt
4665 .section .tdata,"aw'$tls_section_flag'",@progbits
4666 .type value, @object
4668 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4669 gcc_cv_as_ix86_tlsldm,,
4670 [$as_ix86_gas_32_opt],
4672 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4673 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4674 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4675 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4676 gcc_cv_as_ix86_tlsldm=yes
4680 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4681 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4682 [Define to 1 if your assembler and linker support @tlsldm.])
4693 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4694 gcc_cv_as_ix86_got32x,,
4695 [$as_ix86_gas_32_opt],
4697 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4698 && test x$gcc_cv_readelf != x \
4699 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4700 | grep R_386_GOT32X > /dev/null 2>&1 \
4701 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4702 if $gcc_cv_objdump -dw conftest 2>&1 \
4703 | grep 0xffffff > /dev/null 2>&1; then
4704 gcc_cv_as_ix86_got32x=no
4706 gcc_cv_as_ix86_got32x=yes
4710 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4711 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4712 [Define 0/1 if your assembler and linker support @GOT.])
4714 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4715 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4716 [$as_ix86_gas_32_opt],
4722 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4723 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4724 [Define true if the assembler supports '.long foo@GOTOFF'.])
4727 .section .text,"ax",@progbits
4729 .type _start, @function
4731 leal ld@tlsldm(%ecx), %eax
4732 call *___tls_get_addr@GOT(%ecx)
4733 leal gd@tlsgd(%ecx), %eax
4734 call *___tls_get_addr@GOT(%ecx)
4736 .section .tdata,"aw'$tls_section_flag'",@progbits
4744 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4745 gcc_cv_as_ix86_tls_get_addr_via_got,,
4746 [$as_ix86_gas_32_opt],
4748 [if test x$gcc_cv_ld != x \
4749 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4750 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4753 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4754 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4755 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4759 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4760 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4762 addl r15 = @ltoffx(x#), gp
4764 ld8.mov r16 = [[r15]], x#
4766 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4767 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4775 gcc_GAS_CHECK_FEATURE([.machine directive support],
4776 gcc_cv_as_machine_directive,,,
4777 [ .machine ppc7400])
4778 if test x$gcc_cv_as_machine_directive != xyes; then
4779 echo "*** This target requires an assembler supporting \".machine\"" >&2
4780 echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4781 test x$build = x$target && exit 1
4787 *-*-aix*) conftest_s=' .machine "pwr5"
4790 *-*-darwin*) conftest_s=' .text
4792 *) conftest_s=' .machine power4
4797 gcc_GAS_CHECK_FEATURE([mfcr field support],
4798 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4800 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4801 [Define if your assembler supports mfcr field.])])
4804 *-*-aix*) conftest_s=' .csect .text[[PR]]
4806 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4810 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4811 *) conftest_s=' .text
4813 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4816 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4817 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4819 [AC_DEFINE(HAVE_AS_REL16, 1,
4820 [Define if your assembler supports R_PPC_REL16 relocs.])])
4823 *-*-aix*) conftest_s=' .machine "pwr7"
4826 *) conftest_s=' .machine power7
4831 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4832 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4834 [AC_DEFINE(HAVE_AS_VSX, 1,
4835 [Define if your assembler supports VSX instructions.])])
4837 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4838 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4839 [.gnu_attribute 4,1],,
4840 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4841 [Define if your assembler supports .gnu_attribute.])])
4843 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4844 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4845 [ .reloc .,R_PPC64_ENTRY; nop],,
4846 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4847 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4849 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
4850 gcc_cv_as_powerpc_pltseq_markers, [2,31,0],-a32 --fatal-warnings,
4851 [ .reloc .,R_PPC_PLTSEQ; nop],,
4852 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
4853 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
4857 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4858 gcc_cv_as_aix_ref, [2,21,0],,
4859 [ .csect stuff[[rw]]
4865 [AC_DEFINE(HAVE_AS_REF, 1,
4866 [Define if your assembler supports .ref])])
4868 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4869 gcc_cv_as_aix_dwloc, [2,21,0],,
4874 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4875 [Define if your assembler supports AIX debug frame section label reference.])])
4881 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4882 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4883 [ lw $4,%gp_rel(foo)($4)],,
4884 [if test x$target_cpu_default = x
4885 then target_cpu_default=MASK_EXPLICIT_RELOCS
4886 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4889 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4890 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4891 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4892 [Define if the assembler understands -mno-shared.])])
4894 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4895 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4896 [.gnu_attribute 4,1],,
4897 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4898 [Define if your assembler supports .gnu_attribute.])])
4900 gcc_GAS_CHECK_FEATURE([.module support],
4901 gcc_cv_as_mips_dot_module,,[-32],
4904 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4905 [Define if your assembler supports .module.])])
4906 if test x$gcc_cv_as_mips_dot_module = xno \
4907 && test x$with_fp_32 != x; then
4909 [Requesting --with-fp-32= requires assembler support for .module.])
4912 gcc_GAS_CHECK_FEATURE([.micromips support],
4913 gcc_cv_as_micromips_support,,[--fatal-warnings],
4915 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4916 [Define if your assembler supports the .set micromips directive])])
4918 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4919 gcc_cv_as_mips_dtprelword, [2,18,0],,
4920 [.section .tdata,"awT",@progbits
4924 .dtprelword x+0x8000],,
4925 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4926 [Define if your assembler supports .dtprelword.])])
4928 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4929 gcc_cv_as_mips_dspr1_mult,,,
4939 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4940 [Define if your assembler supports DSPR1 mult.])])
4942 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4943 gcc_cv_as_ld_jalr_reloc=no
4944 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4945 if test $in_tree_ld = yes ; then
4946 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4947 && test $in_tree_ld_is_elf = yes; then
4948 gcc_cv_as_ld_jalr_reloc=yes
4950 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4951 echo ' .ent x' > conftest.s
4952 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4953 echo ' lw $25,%call16(y)($28)' >> conftest.s
4954 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4955 echo '1: jalr $25' >> conftest.s
4956 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4957 echo '1: jalr $25' >> conftest.s
4958 echo ' .end x' >> conftest.s
4959 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4960 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4961 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4962 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4963 gcc_cv_as_ld_jalr_reloc=yes
4969 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4970 if test x$target_cpu_default = x; then
4971 target_cpu_default=MASK_RELAX_PIC_CALLS
4973 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4976 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4978 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4979 [gcc_cv_ld_mips_personality_relaxation],
4980 [gcc_cv_ld_mips_personality_relaxation=no
4981 if test $in_tree_ld = yes ; then
4982 if test "$gcc_cv_gld_major_version" -eq 2 \
4983 -a "$gcc_cv_gld_minor_version" -ge 21 \
4984 -o "$gcc_cv_gld_major_version" -gt 2; then
4985 gcc_cv_ld_mips_personality_relaxation=yes
4987 elif test x$gcc_cv_as != x \
4988 -a x$gcc_cv_ld != x \
4989 -a x$gcc_cv_readelf != x ; then
4990 cat > conftest.s <<EOF
4992 .cfi_personality 0x80,indirect_ptr
4999 .section .data,"aw",@progbits
5003 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
5004 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
5005 if $gcc_cv_readelf -d conftest 2>&1 \
5006 | grep TEXTREL > /dev/null 2>&1; then
5008 elif $gcc_cv_readelf --relocs conftest 2>&1 \
5009 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
5012 gcc_cv_ld_mips_personality_relaxation=yes
5016 rm -f conftest.s conftest.o conftest])
5017 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
5018 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
5019 [Define if your linker can relax absolute .eh_frame personality
5020 pointers into PC-relative form.])
5023 gcc_GAS_CHECK_FEATURE([-mnan= support],
5024 gcc_cv_as_mips_nan,,
5026 [AC_DEFINE(HAVE_AS_NAN, 1,
5027 [Define if the assembler understands -mnan=.])])
5028 if test x$gcc_cv_as_mips_nan = xno \
5029 && test x$with_nan != x; then
5031 [Requesting --with-nan= requires assembler support for -mnan=])
5035 # Earlier GAS versions generically support .gnu_attribute, but the
5036 # msp430 assembler will not do anything with it.
5037 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5038 gcc_cv_as_msp430_gnu_attribute, [2,33,50],,
5039 [.gnu_attribute 4,1],,
5040 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5041 [Define if your assembler supports .gnu_attribute.])])
5042 gcc_GAS_CHECK_FEATURE([.mspabi_attribute support],
5043 gcc_cv_as_msp430_mspabi_attribute, [2,33,50],,
5044 [.mspabi_attribute 4,2],,
5045 [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1,
5046 [Define if your assembler supports .mspabi_attribute.])])
5047 if test x$enable_newlib_nano_formatted_io = xyes; then
5048 AC_DEFINE(HAVE_NEWLIB_NANO_FORMATTED_IO, 1, [Define if GCC has been
5049 configured with --enable-newlib-nano-formatted-io.])
5053 # Versions 2.33 and earlier lacked support for the %gotoff relocation
5054 # syntax that is documented in the ABI specification.
5055 gcc_GAS_CHECK_FEATURE([support for %gotoff relocations in constant data],
5056 gcc_cv_as_nios2_gotoff_relocation,,,
5059 .long %gotoff(foo)],,
5060 [AC_DEFINE(HAVE_AS_NIOS2_GOTOFF_RELOCATION, 1,
5061 [Define if your assembler supports %gotoff relocation syntax.])])
5064 gcc_GAS_CHECK_FEATURE([.attribute support],
5065 gcc_cv_as_riscv_attribute, [2,32,0],,
5066 [.attribute stack_align,4],,
5067 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1,
5068 [Define if your assembler supports .attribute.])])
5071 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5072 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
5073 [.gnu_attribute 8,1],,
5074 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5075 [Define if your assembler supports .gnu_attribute.])])
5076 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
5077 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
5082 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
5083 [Define if your assembler supports .machine and .machinemode.])])
5084 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
5085 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
5086 [ .machine z13+vx ],,
5087 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
5088 [Define if your assembler supports architecture modifiers.])])
5089 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
5090 gcc_cv_as_s390_vector_loadstore_alignment_hints, [2,31,0],,
5091 [ vl %v24,0(%r15),3 ],,
5092 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
5093 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
5094 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints on z13],
5095 gcc_cv_as_s390_vector_loadstore_alignment_hints_on_z13,, [-mzarch -march=z13],
5096 [ vl %v24,0(%r15),3 ],,
5097 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS_ON_Z13, 1,
5098 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument on z13.])])
5103 # Mips and HP-UX need the GNU assembler.
5104 # Linux on IA64 might be able to use the Intel assembler.
5107 mips*-*-* | *-*-hpux* )
5108 if test x$gas_flag = xyes \
5109 || test x"$host" != x"$build" \
5110 || test ! -x "$gcc_cv_as" \
5111 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
5114 echo "*** This configuration requires the GNU assembler" >&2
5120 # ??? Not all targets support dwarf2 debug_line, even within a version
5121 # of gas. Moreover, we need to emit a valid instruction to trigger any
5122 # info to the output file. So, as supported targets are added to gas 2.11,
5123 # add some instruction here to (also) show we expect this might work.
5124 # ??? Once 2.11 is released, probably need to add first known working
5125 # version to the per-target configury.
5127 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \
5128 | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \
5129 | tilegx | tilepro | visium | xstormy16 | xtensa)
5139 if test x"$insn" != x; then
5141 .file 1 \"conftest.s\"
5144 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
5145 gcc_cv_as_dwarf2_debug_line,
5146 [elf,2,11,0],, [$conftest_s],
5147 [if test x$gcc_cv_objdump != x \
5148 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
5149 | grep debug_line > /dev/null 2>&1; then
5150 gcc_cv_as_dwarf2_debug_line=yes
5151 elif test x$gcc_cv_otool != x \
5152 && $gcc_cv_otool -l conftest.o 2> /dev/null \
5153 | grep debug_line > /dev/null 2>&1; then
5154 gcc_cv_as_dwarf2_debug_line=yes
5157 # The .debug_line file table must be in the exact order that
5158 # we specified the files, since these indices are also used
5159 # by DW_AT_decl_file. Approximate this test by testing if
5160 # the assembler bitches if the same index is assigned twice.
5161 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
5162 gcc_cv_as_dwarf2_file_buggy,,,
5166 if test $gcc_cv_as_dwarf2_debug_line = yes \
5167 && test $gcc_cv_as_dwarf2_file_buggy = no; then
5168 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
5169 [Define if your assembler supports dwarf2 .file/.loc directives,
5170 and preserves file table indices exactly as given.])
5172 if test $gcc_cv_as_leb128 = yes; then
5174 .file 1 \"conftest.s\"
5175 .loc 1 3 0 view .LVU1
5181 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
5182 gcc_cv_as_dwarf2_debug_view,
5183 [elf,2,27,0],,[$conftest_s],,
5184 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
5185 [Define if your assembler supports views in dwarf2 .loc directives.])])
5189 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
5190 gcc_cv_as_gdwarf2_flag,
5191 [elf,2,11,0], [--gdwarf2], [$insn],,
5192 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5193 [Define if your assembler supports the --gdwarf2 option.])])
5195 gcc_GAS_CHECK_FEATURE([--gstabs option],
5196 gcc_cv_as_gstabs_flag,
5197 [elf,2,11,0], [--gstabs], [$insn],,
5198 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
5199 [Define if your assembler supports the --gstabs option.])])
5201 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5202 gcc_cv_as_debug_prefix_map_flag,
5203 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
5204 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5205 [Define if your assembler supports the --debug-prefix-map option.])])
5208 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5209 gcc_cv_as_compress_debug,,,,
5210 [# gas compiled without zlib cannot compress debug sections and warns
5211 # about it, but still exits successfully. So check for this, too.
5212 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5214 gcc_cv_as_compress_debug=0
5215 # Since binutils 2.26, gas supports --compress-debug-sections=type,
5216 # defaulting to the ELF gABI format.
5217 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
5219 gcc_cv_as_compress_debug=2
5220 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5221 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5222 # Before binutils 2.26, gas only supported --compress-debug-options and
5223 # emitted the traditional GNU format.
5224 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
5226 gcc_cv_as_compress_debug=1
5227 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5228 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5230 gcc_cv_as_compress_debug=0
5232 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5233 [Define to the level of your assembler's compressed debug section support.])
5234 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5235 [Define to the assembler option to enable compressed debug sections.])
5236 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5237 [Define to the assembler option to disable compressed debug sections.])
5239 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
5242 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5243 [Define if your assembler supports .lcomm with an alignment field.])])
5245 if test x$with_sysroot = x && test x$host = x$target \
5246 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5247 && test "$prefix" != "NONE"; then
5248 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5249 [Define to PREFIX/include if cpp should also search that directory.])
5252 # Determine the version of glibc, if any, used on the target.
5253 AC_MSG_CHECKING([for target glibc version])
5254 AC_ARG_WITH([glibc-version],
5255 [AS_HELP_STRING([--with-glibc-version=M.N],
5256 [assume GCC used with glibc version M.N or later])], [
5257 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5258 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5259 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5261 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5263 glibc_version_major=0
5264 glibc_version_minor=0
5265 [if test -f $target_header_dir/features.h \
5266 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5267 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5268 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5269 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5271 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5272 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5273 [GNU C Library major version number used on the target, or 0.])
5274 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5275 [GNU C Library minor version number used on the target, or 0.])
5277 AC_ARG_ENABLE(gnu-unique-object,
5278 [AS_HELP_STRING([--enable-gnu-unique-object],
5279 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5280 [case $enable_gnu_unique_object in
5282 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5283 Valid choices are 'yes' and 'no'.]) ;;
5285 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
5287 [.type foo, '$target_type_format_char'gnu_unique_object],,
5288 # We need to unquote above to to use the definition from config.gcc.
5289 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5290 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5292 if test x$enable_gnu_unique_object = xyes; then
5293 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5294 [Define if your assembler supports @gnu_unique_object.])
5297 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5298 [gcc_cv_as_line_zero],
5299 [gcc_cv_as_line_zero=no
5300 if test $in_tree_gas = yes; then
5301 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
5302 elif test "x$gcc_cv_as" != x; then
5303 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5304 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5305 test "x`cat conftest.out`" = x
5307 gcc_cv_as_line_zero=yes
5309 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5310 cat conftest.s >&AS_MESSAGE_LOG_FD
5311 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5312 cat conftest.out >&AS_MESSAGE_LOG_FD
5314 rm -f conftest.o conftest.s conftest.out
5316 if test "x$gcc_cv_as_line_zero" = xyes; then
5317 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5318 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5321 AC_MSG_CHECKING(support for thin archives)
5322 thin_archive_support=no
5323 echo 'int main (void) { return 0; }' > conftest.c
5324 if ($AR --version | sed 1q | grep "GNU ar" \
5325 && $CC $CFLAGS -c conftest.c \
5326 && $AR rcT conftest.a conftest.o \
5327 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5328 thin_archive_support=yes
5330 rm -f conftest.c conftest.o conftest.a conftest
5331 AC_MSG_RESULT($thin_archive_support)
5332 AC_SUBST(thin_archive_support)
5334 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5335 gcc_cv_ld_eh_frame_hdr=no
5336 if test $in_tree_ld = yes ; then
5337 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5338 && test $in_tree_ld_is_elf = yes; then
5339 gcc_cv_ld_eh_frame_hdr=yes
5341 elif test x$gcc_cv_ld != x; then
5342 if echo "$ld_ver" | grep GNU > /dev/null; then
5343 # Check if linker supports --eh-frame-hdr option
5344 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5345 gcc_cv_ld_eh_frame_hdr=yes
5350 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5351 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5352 gcc_cv_ld_eh_frame_hdr=yes
5358 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5359 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5360 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5361 [Define if your linker supports .eh_frame_hdr.])
5363 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5365 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5366 gcc_cv_ld_eh_frame_ciev3=no
5367 if test $in_tree_ld = yes ; then
5368 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5369 && test $in_tree_ld_is_elf = yes; then
5370 gcc_cv_ld_eh_frame_ciev3=yes
5372 elif test x$gcc_cv_ld != x; then
5373 if echo "$ld_ver" | grep GNU > /dev/null; then
5374 gcc_cv_ld_eh_frame_ciev3=yes
5375 if test 0"$ld_date" -lt 20040513; then
5376 if test -n "$ld_date"; then
5377 # If there was date string, but was earlier than 2004-05-13, fail
5378 gcc_cv_ld_eh_frame_ciev3=no
5379 elif test "$ld_vers_major" -lt 2; then
5380 gcc_cv_ld_eh_frame_ciev3=no
5381 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5382 gcc_cv_ld_eh_frame_ciev3=no
5388 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5389 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5390 gcc_cv_ld_eh_frame_ciev3=yes
5396 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5397 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5398 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5399 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5401 AC_MSG_CHECKING(linker position independent executable support)
5403 if test $in_tree_ld = yes ; then
5405 # Full PIE support on Solaris was only introduced in gld 2.26.
5406 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5407 *) gcc_gld_pie_min_version=15 ;;
5409 if test "$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 \
5410 && test $in_tree_ld_is_elf = yes; then
5413 elif test x$gcc_cv_ld != x; then
5414 # Check if linker supports -pie option
5415 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5419 if echo "$ld_ver" | grep GNU > /dev/null \
5420 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5427 *-*-solaris2.1[[1-9]]*)
5428 # Solaris 11.3 added PIE support.
5429 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5436 if test x"$gcc_cv_ld_pie" = xyes; then
5437 AC_DEFINE(HAVE_LD_PIE, 1,
5438 [Define if your linker supports PIE option.])
5440 AC_MSG_RESULT($gcc_cv_ld_pie)
5442 AC_MSG_CHECKING(linker PIE support with copy reloc)
5443 gcc_cv_ld_pie_copyreloc=no
5444 if test $gcc_cv_ld_pie = yes ; then
5445 if test $in_tree_ld = yes ; then
5446 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5447 gcc_cv_ld_pie_copyreloc=yes
5449 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5450 # Check if linker supports -pie option with copy reloc
5452 i?86-*-linux* | x86_64-*-linux*)
5453 cat > conftest1.s <<EOF
5456 .type a_glob, @object
5461 cat > conftest2.s <<EOF
5464 .type main, @function
5466 movl %eax, a_glob(%rip)
5469 .section .data.rel,"aw",@progbits
5474 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5475 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5476 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5477 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5478 gcc_cv_ld_pie_copyreloc=yes
5480 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5485 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5486 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5487 [Define 0/1 if your linker supports -pie option with copy reloc.])
5488 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5490 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5491 gcc_cv_ld_eh_gc_sections=no
5492 if test $in_tree_ld = yes ; then
5493 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5494 && test $in_tree_ld_is_elf = yes; then
5495 gcc_cv_ld_eh_gc_sections=yes
5497 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5498 cat > conftest.s <<EOF
5501 .type _start, @function
5504 .size _start, .-_start
5505 .section .text.foo,"ax",@progbits
5506 .type foo, @function
5510 .section .gcc_except_table.foo,"a",@progbits
5513 .section .eh_frame,"a",@progbits
5516 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5517 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5518 | grep "gc-sections option ignored" > /dev/null; then
5519 gcc_cv_ld_eh_gc_sections=no
5520 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5521 | grep gcc_except_table > /dev/null; then
5522 gcc_cv_ld_eh_gc_sections=yes
5523 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5524 if test x$gcc_cv_as_comdat_group != xyes; then
5525 gcc_cv_ld_eh_gc_sections=no
5526 cat > conftest.s <<EOF
5529 .type _start, @function
5532 .size _start, .-_start
5533 .section .gnu.linkonce.t.foo,"ax",@progbits
5534 .type foo, @function
5538 .section .gcc_except_table.foo,"a",@progbits
5541 .section .eh_frame,"a",@progbits
5544 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5545 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5546 | grep "gc-sections option ignored" > /dev/null; then
5547 gcc_cv_ld_eh_gc_sections=no
5548 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5549 | grep gcc_except_table > /dev/null; then
5550 gcc_cv_ld_eh_gc_sections=yes
5556 rm -f conftest.s conftest.o conftest
5560 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5561 gcc_cv_ld_eh_gc_sections=no
5564 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5565 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5566 [Define if your linker supports garbage collection of
5567 sections in presence of EH frames.])
5569 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5571 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5572 gcc_cv_ld_eh_gc_sections_bug=no
5573 if test $in_tree_ld = yes ; then
5574 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5575 && test $in_tree_ld_is_elf = yes; then
5576 gcc_cv_ld_eh_gc_sections_bug=yes
5578 elif test x$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
5579 gcc_cv_ld_eh_gc_sections_bug=yes
5580 cat > conftest.s <<EOF
5583 .type _start, @function
5586 .size _start, .-_start
5587 .section .text.startup.foo,"ax",@progbits
5588 .type foo, @function
5592 .section .gcc_except_table.foo,"a",@progbits
5595 .section .eh_frame,"a",@progbits
5598 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5599 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5600 | grep "gc-sections option ignored" > /dev/null; then
5602 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5603 | grep gcc_except_table > /dev/null; then
5604 gcc_cv_ld_eh_gc_sections_bug=no
5607 rm -f conftest.s conftest.o conftest
5609 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5610 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5611 [Define if your linker has buggy garbage collection of
5612 sections support when .text.startup.foo like sections are used.])
5614 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5616 AC_MSG_CHECKING(linker for compressed debug sections)
5617 # gold/gld support compressed debug sections since binutils 2.19/2.21
5618 # In binutils 2.26, gld gained support for the ELF gABI format.
5619 if test $in_tree_ld = yes ; then
5620 gcc_cv_ld_compress_debug=0
5621 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5622 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5623 gcc_cv_ld_compress_debug=2
5624 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5625 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5626 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5627 gcc_cv_ld_compress_debug=3
5628 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5629 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5630 && test $in_tree_ld_is_elf = yes; then
5631 gcc_cv_ld_compress_debug=1
5633 elif echo "$ld_ver" | grep GNU > /dev/null; then
5634 if test "$ld_vers_major" -lt 2 \
5635 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5636 gcc_cv_ld_compress_debug=0
5637 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5638 gcc_cv_ld_compress_debug=1
5640 gcc_cv_ld_compress_debug=3
5641 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5643 if test $ld_is_gold = yes; then
5644 gcc_cv_ld_compress_debug=2
5645 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5651 # Introduced in Solaris 11.2.
5652 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5653 gcc_cv_ld_compress_debug=3
5654 gcc_cv_ld_compress_debug_option="-z compress-sections"
5656 gcc_cv_ld_compress_debug=0
5660 # Assume linkers other than GNU ld don't support compessed debug
5662 gcc_cv_ld_compress_debug=0
5667 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5668 [Define to the level of your linker's compressed debug section support.])
5669 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5670 [Define to the linker option to enable compressed debug sections.])
5671 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5673 if test x"$ld64_flag" = x"yes"; then
5675 # Set defaults for possibly untestable items.
5676 gcc_cv_ld64_export_dynamic=0
5678 if test "$build" = "$host"; then
5684 # On Darwin, because of FAT library support, it is often possible to execute
5685 # exes from compatible archs even when the host differs from the build system.
5686 case "$build","$host" in
5687 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
5692 # If the configurer specified a minimum ld64 version to be supported, then use
5693 # that to determine feature support.
5694 if test x"${gcc_cv_ld64_version}" != x; then
5695 AC_MSG_CHECKING(ld64 specified version)
5696 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
5697 AC_MSG_RESULT($gcc_cv_ld64_major)
5698 if test "$gcc_cv_ld64_major" -ge 236; then
5699 gcc_cv_ld64_export_dynamic=1
5701 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
5702 # If the version was not specified, try to find it.
5703 AC_MSG_CHECKING(linker version)
5704 if test x"${gcc_cv_ld64_version}" = x; then
5705 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
5707 AC_MSG_RESULT($gcc_cv_ld64_version)
5709 AC_MSG_CHECKING(linker for -export_dynamic support)
5710 gcc_cv_ld64_export_dynamic=1
5711 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
5712 gcc_cv_ld64_export_dynamic=0
5714 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
5717 if test x"${gcc_cv_ld64_version}" != x; then
5718 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
5719 [Define to ld64 version.])
5722 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
5723 [Define to 1 if ld64 supports '-export_dynamic'.])
5730 AC_CACHE_CHECK(linker --as-needed support,
5731 gcc_cv_ld_as_needed,
5732 [gcc_cv_ld_as_needed=no
5733 gcc_cv_ld_as_needed_option='--as-needed'
5734 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5735 if test $in_tree_ld = yes ; then
5736 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5737 && test $in_tree_ld_is_elf = yes; then
5738 gcc_cv_ld_as_needed=yes
5739 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
5740 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5741 gcc_cv_ld_no_as_needed_option='--pop-state'
5744 elif test x$gcc_cv_ld != x; then
5745 # Check if linker supports --as-needed and --no-as-needed options
5746 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
5747 gcc_cv_ld_as_needed=yes
5748 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
5749 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
5750 && echo "$ld_ver" | grep GNU > /dev/null \
5751 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
5752 # Use these options only when both ld.bfd and ld.gold support
5753 # --push-state/--pop-state, which unfortunately wasn't added
5755 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5756 gcc_cv_ld_no_as_needed_option='--pop-state'
5759 case "$target:$gnu_ld" in
5761 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
5763 gcc_cv_ld_as_needed=yes
5764 gcc_cv_ld_as_needed_option="-z ignore"
5765 gcc_cv_ld_no_as_needed_option="-z record"
5769 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5770 # dl_iterate_phdr, i.e. since Solaris 11.
5772 *-*-solaris2.1[[1-9]]*)
5774 i?86-*-* | x86_64-*-*)
5775 if echo "$ld_ver" | grep GNU > /dev/null; then
5776 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5777 gcc_cv_ld_as_needed=no
5783 gcc_cv_ld_as_needed=no
5787 if test x"$gcc_cv_ld_as_needed" = xyes; then
5788 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5789 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5790 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5791 [Define to the linker option to ignore unused dependencies.])
5792 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5793 [Define to the linker option to keep unused dependencies.])
5796 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5797 saved_LDFLAGS="$LDFLAGS"
5798 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5799 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5800 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
5801 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5803 LDFLAGS="$saved_LDFLAGS"
5804 if test "x$gcc_cv_ld_clearcap" = xyes; then
5805 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5806 [Define if the linker supports clearing hardware capabilities via mapfile.])
5807 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5809 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5815 emul_name="-melf32lppc"
5818 emul_name="-melf32ppc"
5821 AC_CACHE_CHECK(linker .gnu.attributes long double support,
5823 [gcc_cv_ld_ppc_attr=no
5824 if test x"$ld_is_gold" = xyes; then
5825 gcc_cv_ld_ppc_attr=yes
5826 elif test $in_tree_ld = yes ; then
5827 if test "$gcc_cv_gld_major_version" -eq 2 \
5828 -a "$gcc_cv_gld_minor_version" -ge 28 \
5829 -o "$gcc_cv_gld_major_version" -gt 2; then
5830 gcc_cv_ld_ppc_attr=yes
5832 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5833 # check that merging the long double .gnu_attribute doesn't warn
5834 cat > conftest1.s <<EOF
5837 cat > conftest2.s <<EOF
5840 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5841 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5842 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
5843 && test ! -s conftest.err; then
5844 gcc_cv_ld_ppc_attr=yes
5846 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
5849 if test x$gcc_cv_ld_ppc_attr = xyes; then
5850 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
5851 [Define if your PowerPC linker has .gnu.attributes long double support.])
5856 case "$target:$tm_file" in
5857 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5860 emul_name="-melf64lppc"
5863 emul_name="-melf64ppc"
5866 emul_name="-melf64ppc_fbsd"
5869 AC_CACHE_CHECK(linker support for omitting dot symbols,
5870 gcc_cv_ld_no_dot_syms,
5871 [gcc_cv_ld_no_dot_syms=no
5872 if test x"$ld_is_gold" = xyes; then
5873 gcc_cv_ld_no_dot_syms=yes
5874 elif test $in_tree_ld = yes ; then
5875 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5876 gcc_cv_ld_no_dot_syms=yes
5878 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5879 cat > conftest1.s <<EOF
5883 cat > conftest2.s <<EOF
5884 .section ".opd","aw"
5889 .quad .LEfoo,.TOC.@tocbase,0
5895 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5896 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5897 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5898 gcc_cv_ld_no_dot_syms=yes
5900 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5903 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5904 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5905 [Define if your PowerPC64 linker only needs function descriptor syms.])
5908 AC_CACHE_CHECK(linker large toc support,
5909 gcc_cv_ld_large_toc,
5910 [gcc_cv_ld_large_toc=no
5911 if test x"$ld_is_gold" = xyes; then
5912 gcc_cv_ld_large_toc=yes
5913 elif test $in_tree_ld = yes ; then
5914 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5915 gcc_cv_ld_large_toc=yes
5917 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5918 cat > conftest.s <<EOF
5919 .section ".tbss","awT",@nobits
5925 addis 9,13,ie0@got@tprel@ha
5926 ld 9,ie0@got@tprel@l(9)
5928 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5929 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5930 gcc_cv_ld_large_toc=yes
5932 rm -f conftest conftest.o conftest.s
5935 if test x"$gcc_cv_ld_large_toc" = xyes; then
5936 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5937 [Define if your PowerPC64 linker supports a large TOC.])
5940 AC_CACHE_CHECK(linker toc pointer alignment,
5941 gcc_cv_ld_toc_align,
5942 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5943 cat > conftest.s <<EOF
5948 .section .data.rel.ro,"aw",@progbits
5953 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5954 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5955 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5957 rm -f conftest conftest.o conftest.s
5960 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5961 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5962 [Define to .TOC. alignment forced by your linker.])
5969 AC_CACHE_CHECK(linker large toc support,
5970 gcc_cv_ld_large_toc,
5971 [gcc_cv_ld_large_toc=no
5972 if test x$gcc_cv_as != x ; then
5973 cat > conftest.s <<EOF
5983 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5984 gcc_cv_ld_large_toc=yes
5986 rm -f conftest conftest.o conftest.s
5989 if test x"$gcc_cv_ld_large_toc" = xyes; then
5990 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5991 [Define if your PowerPC64 linker supports a large TOC.])
5996 AC_CACHE_CHECK(linker --build-id support,
5998 [gcc_cv_ld_buildid=no
5999 if test $in_tree_ld = yes ; then
6000 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6001 "$gcc_cv_gld_minor_version" -ge 18 -o \
6002 "$gcc_cv_gld_major_version" -gt 2 \
6003 && test $in_tree_ld_is_elf = yes; then
6004 gcc_cv_ld_buildid=yes
6006 elif test x$gcc_cv_ld != x; then
6007 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
6008 gcc_cv_ld_buildid=yes
6011 if test x"$gcc_cv_ld_buildid" = xyes; then
6012 AC_DEFINE(HAVE_LD_BUILDID, 1,
6013 [Define if your linker supports --build-id.])
6016 AC_ARG_ENABLE(linker-build-id,
6017 [AS_HELP_STRING([--enable-linker-build-id],
6018 [compiler will always pass --build-id to linker])],
6020 enable_linker_build_id=no)
6022 if test x"$enable_linker_build_id" = xyes; then
6023 if test x"$gcc_cv_ld_buildid" = xyes; then
6024 AC_DEFINE(ENABLE_LD_BUILDID, 1,
6025 [Define if gcc should always pass --build-id to linker.])
6027 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
6031 # In binutils 2.21, GNU ld gained support for new emulations fully
6032 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
6033 AC_CACHE_CHECK(linker *_sol2 emulation support,
6034 gcc_cv_ld_sol2_emulation,
6035 [gcc_cv_ld_sol2_emulation=no
6036 if test $in_tree_ld = yes ; then
6037 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6038 "$gcc_cv_gld_minor_version" -ge 21 -o \
6039 "$gcc_cv_gld_major_version" -gt 2 \
6040 && test $in_tree_ld_is_elf = yes; then
6041 gcc_cv_ld_sol2_emulation=yes
6043 elif test x$gcc_cv_ld != x; then
6044 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
6045 grep _sol2 > /dev/null; then
6046 gcc_cv_ld_sol2_emulation=yes
6049 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
6050 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
6051 [Define if your linker supports the *_sol2 emulations.])
6054 AC_CACHE_CHECK(linker --sysroot support,
6056 [gcc_cv_ld_sysroot=no
6057 if test $in_tree_ld = yes ; then
6058 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
6059 gcc_cv_ld_sysroot=yes
6061 elif test x$gcc_cv_ld != x; then
6062 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
6063 gcc_cv_ld_sysroot=yes
6066 if test x"$gcc_cv_ld_sysroot" = xyes; then
6067 AC_DEFINE(HAVE_LD_SYSROOT, 1,
6068 [Define if your linker supports --sysroot.])
6073 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
6074 AC_CACHE_CHECK([system-provided CRTs on Solaris],
6075 gcc_cv_solaris_crts,
6076 [gcc_cv_solaris_crts=no
6077 if test x$host != x$target; then
6078 if test "x$with_sysroot" = xyes; then
6079 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
6081 target_sysroot="${with_sysroot}"
6084 target_libdir="$target_sysroot/usr/lib"
6085 # At the time they were added, gcrt1.o became a symlink for backwards
6086 # compatibility on x86, while crt1.o was added on sparc, so check for that.
6088 i?86-*-solaris2* | x86_64-*-solaris2*)
6089 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
6092 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
6097 if test x$gcc_cv_solaris_crts = xyes; then
6098 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
6099 [Define if the system-provided CRTs are present on Solaris.])
6102 AC_ARG_ENABLE(libssp,
6103 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
6104 [case "${enableval}" in
6108 AC_MSG_ERROR([unknown libssp setting $enableval])
6112 # Test for stack protector support in target C library.
6113 AC_CACHE_CHECK(__stack_chk_fail in target C library,
6114 gcc_cv_libc_provides_ssp,
6115 [gcc_cv_libc_provides_ssp=no
6116 if test "x$enable_libssp" = "xno"; then
6117 gcc_cv_libc_provides_ssp=yes
6118 elif test "x$enable_libssp" = "xyes"; then
6119 gcc_cv_libc_provides_ssp=no
6123 # All versions of musl provide stack protector
6124 gcc_cv_libc_provides_ssp=yes;;
6125 *-*-linux* | *-*-kfreebsd*-gnu)
6126 # glibc 2.4 and later provides __stack_chk_fail and
6127 # either __stack_chk_guard, or TLS access to stack guard canary.
6128 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
6129 [if test -f $target_header_dir/features.h \
6130 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
6131 $target_header_dir/features.h > /dev/null; then
6132 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
6133 $target_header_dir/features.h > /dev/null && \
6134 test -f $target_header_dir/bits/uClibc_config.h && \
6135 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
6136 $target_header_dir/bits/uClibc_config.h > /dev/null; then
6137 gcc_cv_libc_provides_ssp=yes
6139 # all versions of Bionic support stack protector
6140 elif test -f $target_header_dir/sys/cdefs.h \
6141 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
6142 $target_header_dir/sys/cdefs.h > /dev/null; then
6143 gcc_cv_libc_provides_ssp=yes
6147 # Avoid complicated tests (see
6148 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
6149 # simply assert that glibc does provide this, which is true for all
6150 # realistically usable GNU/Hurd configurations.
6151 # All supported versions of musl provide it as well
6152 gcc_cv_libc_provides_ssp=yes;;
6153 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
6154 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
6155 [echo "no __stack_chk_fail on this target"])
6157 *) gcc_cv_libc_provides_ssp=no ;;
6161 if test x$gcc_cv_libc_provides_ssp = xyes; then
6162 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
6163 [Define if your target C library provides stack protector support])
6166 # Check whether --enable-default-ssp was given.
6167 AC_ARG_ENABLE(default-ssp,
6168 [AS_HELP_STRING([--enable-default-ssp],
6169 [enable Stack Smashing Protection as default])],[
6170 if test x$gcc_cv_libc_provides_ssp = xyes; then
6172 ia64*-*-*) enable_default_ssp=no ;;
6173 *) enable_default_ssp=$enableval ;;
6176 enable_default_ssp=no
6178 enable_default_ssp=no)
6179 if test x$enable_default_ssp = xyes ; then
6180 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
6181 [Define if your target supports default stack protector and it is enabled.])
6183 AC_SUBST([enable_default_ssp])
6185 # Test for <sys/sdt.h> on the target.
6186 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
6187 AC_MSG_CHECKING(sys/sdt.h in the target C library)
6189 if test -f $target_header_dir/sys/sdt.h; then
6191 AC_DEFINE(HAVE_SYS_SDT_H, 1,
6192 [Define if your target C library provides sys/sdt.h])
6194 AC_MSG_RESULT($have_sys_sdt_h)
6196 # Check if TFmode long double should be used by default or not.
6197 # Some glibc targets used DFmode long double, but with glibc 2.4
6198 # and later they can use TFmode.
6200 powerpc*-*-linux* | \
6204 AC_ARG_WITH(long-double-128,
6205 [AS_HELP_STRING([--with-long-double-128],
6206 [use 128-bit long double by default])],
6207 gcc_cv_target_ldbl128="$with_long_double_128", [
6209 s390*-*-linux-musl*)
6210 gcc_cv_target_ldbl128=yes
6212 powerpc*-*-linux-musl*)
6213 gcc_cv_target_ldbl128=no
6216 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6217 [gcc_cv_target_ldbl128=no
6218 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6219 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6220 && gcc_cv_target_ldbl128=yes
6228 if test x$gcc_cv_target_ldbl128 = xyes; then
6229 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6230 [Define if TFmode long double should be the default])
6233 # Check if TFmode long double target should use the IBM extended double or IEEE
6234 # 128-bit floating point formats if long doubles are 128-bits long. The long
6235 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6236 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6238 AC_ARG_WITH([long-double-format],
6239 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6240 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6241 case "$target:$with_long_double_format" in
6242 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6245 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6246 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6248 power7 | power8 | power9 | power1*)
6252 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6253 supported if the default cpu is power7 or newer])
6254 with_long_double_format=""
6258 xpowerpc64*-*-linux*:*)
6259 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6260 with_long_double_format=""
6263 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6264 on 64-bit PowerPC VSX Linux systems])
6265 with_long_double_format=""
6270 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6271 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6272 gcc_cv_libc_provides_hwcap_in_tcb=no
6275 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6278 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6279 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6280 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6283 # Check if the target LIBC handles PT_GNU_STACK.
6284 gcc_cv_libc_gnustack=unknown
6287 GCC_GLIBC_VERSION_GTE_IFELSE([2], [31], [gcc_cv_libc_gnustack=yes], )
6290 if test x$gcc_cv_libc_gnustack = xyes; then
6291 AC_DEFINE(TARGET_LIBC_GNUSTACK, 1,
6292 [Define if your target C Library properly handles PT_GNU_STACK])
6295 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6296 gcc_cv_target_dl_iterate_phdr=unknown
6299 # <link.h> needs both a dl_iterate_phdr declaration and support for
6300 # compilation with largefile support.
6301 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6302 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6303 gcc_cv_target_dl_iterate_phdr=yes
6305 gcc_cv_target_dl_iterate_phdr=no
6308 *-*-dragonfly* | *-*-freebsd*)
6309 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6310 gcc_cv_target_dl_iterate_phdr=yes
6312 gcc_cv_target_dl_iterate_phdr=no
6316 gcc_cv_target_dl_iterate_phdr=yes
6319 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
6320 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
6321 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
6322 [Define if your target C library provides the `dl_iterate_phdr' function.])
6324 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
6326 # We no longer support different GC mechanisms. Emit an error if
6327 # the user configures with --with-gc.
6329 [AS_HELP_STRING([--with-gc={page,zone}],
6330 [this option is not supported anymore. It used to choose
6331 the garbage collection mechanism to use with the compiler])],
6332 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
6335 # Libraries to use on the host. This will normally be set by the top
6336 # level Makefile. Here we simply capture the value for our Makefile.
6337 if test -z "${HOST_LIBS+set}"; then
6342 # Use the system's zlib library.
6345 dnl Very limited version of automake's enable-maintainer-mode
6347 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
6348 dnl maintainer-mode is disabled by default
6349 AC_ARG_ENABLE(maintainer-mode,
6350 [AS_HELP_STRING([--enable-maintainer-mode],
6351 [enable make rules and dependencies not useful
6352 (and sometimes confusing) to the casual installer])],
6353 maintainer_mode=$enableval,
6356 AC_MSG_RESULT($maintainer_mode)
6358 if test "$maintainer_mode" = "yes"; then
6365 dnl Whether to prevent multiple front-ends from linking at the same time
6367 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
6368 AC_ARG_ENABLE(link-mutex,
6369 [AS_HELP_STRING([--enable-link-mutex],
6370 [avoid linking multiple front-ends at once to avoid thrashing
6371 on the build machine])],
6372 do_link_mutex=$enableval,
6374 AC_MSG_RESULT($do_link_mutex)
6376 if test "$do_link_mutex" = "yes"; then
6381 AC_SUBST(DO_LINK_MUTEX)
6387 # Make empty files to contain the specs and options for each language.
6388 # Then add #include lines to for a compiler that has specs and/or options.
6394 # These (without "all_") are set in each config-lang.in.
6395 # `language' must be a single word so is spelled singularly.
6398 all_outputs='Makefile'
6399 # List of language configure and makefile fragments.
6400 all_lang_configurefrags=
6402 # Additional files for gengtype
6403 all_gtfiles="$target_gtfiles"
6405 # These are the languages that are set in --enable-languages,
6406 # and are available in the GCC tree.
6407 all_selected_languages=
6409 # Add the language fragments.
6410 # Languages are added via two mechanisms. Some information must be
6411 # recorded in makefile variables, these are defined in config-lang.in.
6412 # We accumulate them and plug them into the main Makefile.
6413 # The other mechanism is a set of hooks for each of the main targets
6414 # like `clean', `install', etc.
6416 language_hooks="Make-hooks"
6418 for lang in ${srcdir}/*/config-lang.in
6421 test "$lang" = "${srcdir}/*/config-lang.in" && continue
6423 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
6424 if test "x$lang_alias" = x
6426 echo "$lang doesn't set \$language." 1>&2
6429 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
6430 subdirs="$subdirs $subdir"
6432 # $gcc_subdir is where the gcc integration files are to be found
6433 # for a language, both for internal compiler purposes (compiler
6434 # sources implementing front-end to GCC tree converters), and for
6435 # build infrastructure purposes (Make-lang.in, etc.)
6437 # This will be <subdir> (relative to $srcdir) if a line like
6438 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
6439 # is found in <langdir>/config-lang.in, and will remain <langdir>
6442 # Except for the language alias (fetched above), the regular
6443 # "config-lang.in" contents are always retrieved from $gcc_subdir,
6444 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
6445 # only this and the language alias.
6447 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
6448 if [ "$gcc_subdir" = "" ]; then
6449 gcc_subdir="$subdir"
6452 case ",$enable_languages," in
6454 all_selected_languages="$all_selected_languages $lang_alias"
6455 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
6456 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
6468 . ${srcdir}/$gcc_subdir/config-lang.in
6469 if test "x$language" = x
6471 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
6476 case ",$enable_languages," in
6479 for i in $subdir_requires; do
6480 test -f "${srcdir}/$i/config-lang.in" && continue
6488 all_lang_configurefrags="$all_lang_configurefrags \$(srcdir)/$gcc_subdir/config-lang.in"
6489 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
6490 if test -f $srcdir/$gcc_subdir/lang.opt; then
6491 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
6492 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
6494 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
6495 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
6497 all_languages="$all_languages $language"
6498 all_compilers="$all_compilers $compilers"
6499 all_outputs="$all_outputs $outputs"
6500 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
6501 case ",$enable_languages," in
6503 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
6505 AC_SUBST(enable_lto)
6512 for language in $all_selected_languages
6514 check_languages="$check_languages check-$language"
6518 for language in $all_selected_languages
6520 selftest_languages="$selftest_languages selftest-$language"
6523 # We link each language in with a set of hooks, reached indirectly via
6524 # lang.${target}. Only do so for selected languages.
6528 target_list="all.cross start.encap rest.encap tags \
6529 install-common install-man install-info install-pdf install-html dvi \
6530 pdf html uninstall info man srcextra srcman srcinfo \
6531 mostlyclean clean distclean maintainer-clean install-plugin"
6533 for t in $target_list
6536 for lang in $all_selected_languages
6540 echo "lang.$t: $x" >> Make-hooks
6544 # Option include files
6547 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
6548 option_includes="option-includes.mk"
6549 AC_SUBST_FILE(option_includes)
6557 echo "dir ." > .gdbinit
6558 echo "dir ${srcdir}" >> .gdbinit
6559 if test x$gdb_needs_out_file_path = xyes
6561 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
6563 if test "x$subdirs" != x; then
6566 echo "dir ${srcdir}/$s" >> .gdbinit
6569 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
6570 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
6572 # Put a breakpoint on __asan_report_error to help with debugging buffer
6575 *-fsanitize=address*)
6576 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
6580 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
6581 AC_SUBST(gcc_tooldir)
6584 # Find a directory in which to install a shared libgcc.
6586 AC_ARG_ENABLE(version-specific-runtime-libs,
6587 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
6588 [specify that runtime libraries should be
6589 installed in a compiler-specific directory])])
6591 # Substitute configuration variables
6594 AC_SUBST(all_compilers)
6595 AC_SUBST(all_gtfiles)
6596 AC_SUBST(all_lang_configurefrags)
6597 AC_SUBST(all_lang_makefrags)
6598 AC_SUBST(all_languages)
6599 AC_SUBST(all_selected_languages)
6600 AC_SUBST(build_exeext)
6601 AC_SUBST(build_install_headers_dir)
6602 AC_SUBST(build_xm_file_list)
6603 AC_SUBST(build_xm_include_list)
6604 AC_SUBST(build_xm_defines)
6605 AC_SUBST(build_file_translate)
6606 AC_SUBST(check_languages)
6607 AC_SUBST(selftest_languages)
6608 AC_SUBST(cpp_install_dir)
6609 AC_SUBST(xmake_file)
6610 AC_SUBST(tmake_file)
6611 AC_SUBST(TM_ENDIAN_CONFIG)
6612 AC_SUBST(TM_MULTILIB_CONFIG)
6613 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
6614 AC_SUBST(extra_gcc_objs)
6615 AC_SUBST(user_headers_inc_next_pre)
6616 AC_SUBST(user_headers_inc_next_post)
6617 AC_SUBST(extra_headers_list)
6618 AC_SUBST(extra_objs)
6619 AC_SUBST(extra_programs)
6620 AC_SUBST(float_h_file)
6621 AC_SUBST(gcc_config_arguments)
6622 AC_SUBST(gcc_gxx_include_dir)
6623 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
6624 AC_SUBST(host_exeext)
6625 AC_SUBST(host_xm_file_list)
6626 AC_SUBST(host_xm_include_list)
6627 AC_SUBST(host_xm_defines)
6628 AC_SUBST(out_host_hook_obj)
6630 AC_SUBST(lang_opt_files)
6631 AC_SUBST(lang_specs_files)
6632 AC_SUBST(lang_tree_files)
6633 AC_SUBST(local_prefix)
6635 AC_SUBST(objc_boehm_gc)
6637 AC_SUBST(out_object_file)
6638 AC_SUBST(common_out_file)
6639 AC_SUBST(common_out_object_file)
6640 AC_SUBST(tm_file_list)
6641 AC_SUBST(tm_include_list)
6642 AC_SUBST(tm_defines)
6643 AC_SUBST(tm_p_file_list)
6644 AC_SUBST(tm_p_include_list)
6645 AC_SUBST(tm_d_file_list)
6646 AC_SUBST(tm_d_include_list)
6647 AC_SUBST(xm_file_list)
6648 AC_SUBST(xm_include_list)
6649 AC_SUBST(xm_defines)
6650 AC_SUBST(use_gcc_stdint)
6651 AC_SUBST(c_target_objs)
6652 AC_SUBST(cxx_target_objs)
6653 AC_SUBST(fortran_target_objs)
6654 AC_SUBST(d_target_objs)
6655 AC_SUBST(target_cpu_default)
6657 AC_SUBST_FILE(language_hooks)
6660 if test x${build} = x${host} ; then
6661 if test x${host} = x${target} ; then
6662 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6664 echo "Links are now set up to build a cross-compiler" 1>&2
6665 echo " from ${host} to ${target}." 1>&2
6668 if test x${host} = x${target} ; then
6669 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6670 echo " for ${target}." 1>&2
6672 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6673 echo " from ${host} to ${target}." 1>&2
6677 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6678 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6680 AC_ARG_VAR(ISLLIBS,[How to link isl])
6681 AC_ARG_VAR(ISLINC,[How to find isl include files])
6682 if test "x${ISLLIBS}" != "x" ; then
6683 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6687 AC_SUBST(pluginlibs)
6688 AC_SUBST(enable_plugin)
6689 if test x"$enable_plugin" = x"yes"; then
6690 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6694 # Enable --enable-host-shared
6695 AC_ARG_ENABLE(host-shared,
6696 [AS_HELP_STRING([--enable-host-shared],
6697 [build host code as shared libraries])],
6698 [PICFLAG=-fPIC], [PICFLAG=])
6699 AC_SUBST(enable_host_shared)
6703 AC_ARG_ENABLE(libquadmath-support,
6704 [AS_HELP_STRING([--disable-libquadmath-support],
6705 [disable libquadmath support for Fortran])],
6706 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6707 ENABLE_LIBQUADMATH_SUPPORT=yes)
6708 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6709 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6710 [Define to 1 to enable libquadmath support])
6714 # Specify what hash style to use by default.
6715 AC_ARG_WITH([linker-hash-style],
6716 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6717 [specify the linker hash style])],
6718 [case x"$withval" in
6720 LINKER_HASH_STYLE=sysv
6723 LINKER_HASH_STYLE=gnu
6726 LINKER_HASH_STYLE=both
6729 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6732 [LINKER_HASH_STYLE=''])
6733 if test x"${LINKER_HASH_STYLE}" != x; then
6734 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6735 [The linker hash style])
6738 # Specify what should be the default of -fdiagnostics-color option.
6739 AC_ARG_WITH([diagnostics-color],
6740 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6741 [specify the default of -fdiagnostics-color option
6742 auto-if-env stands for -fdiagnostics-color=auto if
6743 GCC_COLOR environment variable is present and
6744 -fdiagnostics-color=never otherwise])],
6745 [case x"$withval" in
6747 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6750 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6753 DIAGNOSTICS_COLOR_DEFAULT=-1
6756 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6759 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6762 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6763 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6764 [The default for -fdiagnostics-color option])
6766 # Specify what should be the default of -fdiagnostics-urls option.
6767 AC_ARG_WITH([diagnostics-urls],
6768 [AC_HELP_STRING([--with-diagnostics-urls={never,auto,auto-if-env,always}],
6769 [specify the default of -fdiagnostics-urls option
6770 auto-if-env stands for -fdiagnostics-urls=auto if
6771 GCC_URLS or TERM_URLS environment variable is present and
6772 -fdiagnostics-urls=never otherwise])],
6773 [case x"$withval" in
6775 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_NO
6778 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO
6781 DIAGNOSTICS_URLS_DEFAULT=-1
6784 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_YES
6787 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-urls])
6790 [DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO])
6791 AC_DEFINE_UNQUOTED(DIAGNOSTICS_URLS_DEFAULT, $DIAGNOSTICS_URLS_DEFAULT,
6792 [The default for -fdiagnostics-urls option])
6794 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6795 # of jit/jit-playback.c.
6796 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
6797 echo "gcc_driver_version: ${gcc_driver_version}"
6798 cat > gcc-driver-name.h <<EOF
6799 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
6802 # Check whether --enable-default-pie was given.
6803 AC_ARG_ENABLE(default-pie,
6804 [AS_HELP_STRING([--enable-default-pie],
6805 [enable Position Independent Executable as default])],
6806 enable_default_pie=$enableval,
6807 enable_default_pie=no)
6808 if test x$enable_default_pie = xyes ; then
6809 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6810 [Define if your target supports default PIE and it is enabled.])
6812 AC_SUBST([enable_default_pie])
6814 # Check if -fno-PIE works.
6815 AC_CACHE_CHECK([for -fno-PIE option],
6817 [saved_CXXFLAGS="$CXXFLAGS"
6818 CXXFLAGS="$CXXFLAGS -fno-PIE"
6819 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6820 [gcc_cv_c_no_fpie=yes],
6821 [gcc_cv_c_no_fpie=no])
6822 CXXFLAGS="$saved_CXXFLAGS"])
6823 if test "$gcc_cv_c_no_fpie" = "yes"; then
6824 NO_PIE_CFLAGS="-fno-PIE"
6826 AC_SUBST([NO_PIE_CFLAGS])
6828 # Check if -no-pie works.
6829 AC_CACHE_CHECK([for -no-pie option],
6831 [saved_LDFLAGS="$LDFLAGS"
6832 LDFLAGS="$LDFLAGS -no-pie"
6833 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6834 [gcc_cv_no_pie=yes],
6836 LDFLAGS="$saved_LDFLAGS"])
6837 if test "$gcc_cv_no_pie" = "yes"; then
6838 NO_PIE_FLAG="-no-pie"
6840 AC_SUBST([NO_PIE_FLAG])
6842 # Enable Intel CET on Intel CET enabled host if jit is enabled.
6843 GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
6844 case x$enable_languages in
6851 AC_SUBST(CET_HOST_FLAGS)
6853 # Check linker supports '-z bndplt'
6854 ld_bndplt_support=no
6855 AC_MSG_CHECKING(linker -z bndplt option)
6856 if test x"$ld_is_gold" = xno; then
6857 if test $in_tree_ld = yes ; then
6858 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6859 ld_bndplt_support=yes
6861 elif test x$gcc_cv_ld != x; then
6862 # Check if linker supports -a bndplt option
6863 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
6864 ld_bndplt_support=yes
6868 if test x"$ld_bndplt_support" = xyes; then
6869 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6870 [Define if your linker supports -z bndplt])
6872 AC_MSG_RESULT($ld_bndplt_support)
6874 # Check linker supports '--push-state'/'--pop-state'
6875 ld_pushpopstate_support=no
6876 AC_MSG_CHECKING(linker --push-state/--pop-state options)
6877 if test x"$ld_is_gold" = xno; then
6878 if test $in_tree_ld = yes ; then
6879 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6880 ld_pushpopstate_support=yes
6882 elif test x$gcc_cv_ld != x; then
6883 # Check if linker supports --push-state/--pop-state options
6884 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
6885 ld_pushpopstate_support=yes
6889 if test x"$ld_pushpopstate_support" = xyes; then
6890 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
6891 [Define if your linker supports --push-state/--pop-state])
6893 AC_MSG_RESULT($ld_pushpopstate_support)
6895 # Configure the subdirectories
6896 # AC_CONFIG_SUBDIRS($subdirs)
6898 # Create the Makefile
6899 # and configure language subdirectories
6900 AC_CONFIG_FILES($all_outputs)
6902 AC_CONFIG_COMMANDS([default],
6904 case ${CONFIG_HEADERS} in
6905 *auto-host.h:config.in*)
6908 # Make sure all the subdirs exist.
6909 for d in $subdirs doc build common c-family
6911 test -d $d || mkdir $d
6914 [subdirs='$subdirs'])