2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2016 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 # --------------------------------
28 AC_CONFIG_SRCDIR(tree.c)
29 AC_CONFIG_HEADER(auto-host.h:config.in)
31 gcc_version=`cat $srcdir/BASE-VER`
33 # Determine the host, build, and target systems
38 # Determine the noncanonical target name, for directory use.
39 ACX_NONCANONICAL_TARGET
41 # Used for constructing correct paths for offload compilers.
42 real_target_noncanonical=${target_noncanonical}
45 # Determine the target- and build-specific subdirectories
48 # Set program_transform_name
51 # Check for bogus environment variables.
52 # Test if LIBRARY_PATH contains the notation for the current directory
53 # since this would lead to problems installing/building glibc.
54 # LIBRARY_PATH contains the current directory if one of the following
56 # - one of the terminals (":" and ";") is the first or last sign
57 # - two terminals occur directly after each other
58 # - the path contains an element with a dot in it
59 AC_MSG_CHECKING(LIBRARY_PATH variable)
61 case ${LIBRARY_PATH} in
62 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
63 library_path_setting="contains current directory"
66 library_path_setting="ok"
70 AC_MSG_RESULT($library_path_setting)
71 if test "$library_path_setting" != "ok"; then
73 *** LIBRARY_PATH shouldn't contain the current directory when
74 *** building gcc. Please change the environment variable
75 *** and run configure again.])
78 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
79 # since this would lead to problems installing/building glibc.
80 # GCC_EXEC_PREFIX contains the current directory if one of the following
82 # - one of the terminals (":" and ";") is the first or last sign
83 # - two terminals occur directly after each other
84 # - the path contains an element with a dot in it
85 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
87 case ${GCC_EXEC_PREFIX} in
88 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
89 gcc_exec_prefix_setting="contains current directory"
92 gcc_exec_prefix_setting="ok"
96 AC_MSG_RESULT($gcc_exec_prefix_setting)
97 if test "$gcc_exec_prefix_setting" != "ok"; then
99 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
100 *** building gcc. Please change the environment variable
101 *** and run configure again.])
108 # Specify the local prefix
110 AC_ARG_WITH(local-prefix,
111 [AS_HELP_STRING([--with-local-prefix=DIR],
112 [specifies directory to put local include])],
113 [case "${withval}" in
114 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
116 *) local_prefix=$with_local_prefix ;;
119 # Default local prefix if it is empty
120 if test x$local_prefix = x; then
121 local_prefix=/usr/local
124 AC_ARG_WITH([native-system-header-dir],
125 [ --with-native-system-header-dir=dir
126 use dir as the directory to look for standard
127 system header files in. Defaults to /usr/include.],
129 case ${with_native_system_header_dir} in
130 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
131 /* | [[A-Za-z]]:[[\\/]]*) ;;
132 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
134 configured_native_system_header_dir="${withval}"
135 ], [configured_native_system_header_dir=])
137 AC_ARG_WITH(build-sysroot,
138 [AS_HELP_STRING([--with-build-sysroot=sysroot],
139 [use sysroot as the system root during the build])],
140 [if test x"$withval" != x ; then
141 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
143 [SYSROOT_CFLAGS_FOR_TARGET=])
144 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
146 if test "x$prefix" = xNONE; then
147 test_prefix=/usr/local
151 if test "x$exec_prefix" = xNONE; then
152 test_exec_prefix=$test_prefix
154 test_exec_prefix=$exec_prefix
158 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
159 [search for usr/lib, usr/include, et al, within DIR])],
161 case ${with_sysroot} in
163 */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;;
165 case ${with_sysroot} in
166 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
167 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
170 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
171 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
173 case ${TARGET_SYSTEM_ROOT} in
174 "${test_prefix}"|"${test_prefix}/"*|\
175 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
176 '${prefix}'|'${prefix}/'*|\
177 '${exec_prefix}'|'${exec_prefix}/'*)
178 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
179 TARGET_SYSTEM_ROOT_DEFINE="$t"
184 TARGET_SYSTEM_ROOT_DEFINE=
185 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
187 AC_SUBST(TARGET_SYSTEM_ROOT)
188 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
189 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
191 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
192 # passed in by the toplevel make and thus we'd get different behavior
193 # depending on where we built the sources.
195 # Specify the g++ header file directory
196 AC_ARG_WITH(gxx-include-dir,
197 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
198 [specifies directory to put g++ header files])],
199 [case "${withval}" in
200 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
202 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
205 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
206 if test x${gcc_gxx_include_dir} = x; then
207 if test x${enable_version_specific_runtime_libs} = xyes; then
208 gcc_gxx_include_dir='${libsubdir}/include/c++'
210 libstdcxx_incdir='include/c++/$(version)'
211 if test x$host != x$target; then
212 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
214 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
218 gcc_gxx_include_dir_add_sysroot=0
219 if test "${with_sysroot+set}" = set; then
220 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
221 if test "${gcc_gxx_without_sysroot}"; then
222 if test x${with_sysroot} != x/; then
223 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
225 gcc_gxx_include_dir_add_sysroot=1
229 AC_ARG_WITH(cpp_install_dir,
230 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
231 [install the user visible C preprocessor in DIR
232 (relative to PREFIX) as well as PREFIX/bin])],
233 [if test x$withval = xyes; then
234 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
235 elif test x$withval != xno; then
236 cpp_install_dir=$withval
239 # We would like to our source tree to be readonly. However when releases or
240 # pre-releases are generated, the flex/bison generated files as well as the
241 # various formats of manuals need to be included along with the rest of the
242 # sources. Therefore we have --enable-generated-files-in-srcdir to do
245 AC_MSG_CHECKING([whether to place generated files in the source directory])
246 dnl generated-files-in-srcdir is disabled by default
247 AC_ARG_ENABLE(generated-files-in-srcdir,
248 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
249 [put copies of generated files in source dir
250 intended for creating source tarballs for users
251 without texinfo bison or flex])],
252 generated_files_in_srcdir=$enableval,
253 generated_files_in_srcdir=no)
255 AC_MSG_RESULT($generated_files_in_srcdir)
257 if test "$generated_files_in_srcdir" = "yes"; then
264 # -------------------
265 # Find default linker
266 # -------------------
270 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
271 gnu_ld_flag="$with_gnu_ld",
274 # With pre-defined ld
276 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
277 DEFAULT_LINKER="$with_ld")
278 if test x"${DEFAULT_LINKER+set}" = x"set"; then
279 if test ! -x "$DEFAULT_LINKER"; then
280 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
281 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
284 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
285 [Define to enable the use of a default linker.])
288 AC_MSG_CHECKING([whether a default linker was specified])
289 if test x"${DEFAULT_LINKER+set}" = x"set"; then
290 if test x"$gnu_ld_flag" = x"no"; then
291 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
293 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
299 # With demangler in GNU ld
300 AC_ARG_WITH(demangler-in-ld,
301 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
302 demangler_in_ld="$with_demangler_in_ld",
305 # ----------------------
306 # Find default assembler
307 # ----------------------
311 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
312 gas_flag="$with_gnu_as",
316 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
317 DEFAULT_ASSEMBLER="$with_as")
318 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
319 if test ! -x "$DEFAULT_ASSEMBLER"; then
320 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
321 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
324 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
325 [Define to enable the use of a default assembler.])
328 AC_MSG_CHECKING([whether a default assembler was specified])
329 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
330 if test x"$gas_flag" = x"no"; then
331 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
333 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
343 # If a non-executable a.out is present (e.g. created by GNU as above even if
344 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
345 # file, even when creating an executable, so an execution test fails.
346 # Remove possible default executable files to avoid this.
348 # FIXME: This really belongs into AC_PROG_CC and can be removed once
349 # Autoconf includes it.
350 rm -f a.out a.exe b.out
352 # Find the native compiler
355 ACX_PROG_GNAT([-I"$srcdir"/ada])
357 # Do configure tests with the C++ compiler, since that's what we build with.
360 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
361 # optimizations to be activated explicitly by the toplevel.
364 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
365 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
370 # Determine PICFLAG for target gnatlib.
371 GCC_PICFLAG_FOR_TARGET
372 AC_SUBST(PICFLAG_FOR_TARGET)
374 # -------------------------
375 # Check C compiler features
376 # -------------------------
378 AC_USE_SYSTEM_EXTENSIONS
384 # sizeof(char) is 1 by definition.
385 AC_CHECK_SIZEOF(void *)
386 AC_CHECK_SIZEOF(short)
388 AC_CHECK_SIZEOF(long)
389 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
391 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
392 AC_MSG_ERROR([uint64_t or int64_t not found])
395 # check what underlying integer type int64_t uses
396 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
397 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
401 template <typename T> struct X { };
403 struct X<long> { typedef long t; };
404 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
405 if test "$ac_cv_int64_t_type" = "long"; then
406 AC_DEFINE(INT64_T_IS_LONG, 1,
407 [Define if int64_t uses long as underlying type.])
409 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
413 template <typename T> struct X { };
415 struct X<long long> { typedef long long t; };
416 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
419 AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [
420 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
422 ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])])
423 if test $ac_cv_std_swap_in_utility = yes; then
424 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1,
425 [Define if <utility> defines std::swap.])
428 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
429 # If the host compiler is affected by the bug, and we build with optimization
430 # enabled (which happens e.g. when cross-compiling), the pool allocator may
431 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
432 # Since there is no reliable feature check for the presence of this bug,
433 # we simply use a GCC version number check. (This should never trigger for
434 # stages 2 or 3 of a native bootstrap.)
436 if test "$GCC" = yes; then
437 saved_CXXFLAGS="$CXXFLAGS"
439 # The following test compilation will succeed if and only if $CXX accepts
440 # -fno-strict-aliasing *and* is older than GCC 4.3.
441 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
442 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
444 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
445 #error compiler not affected by placement new aliasing bug
448 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
449 [AC_MSG_RESULT([no])])
451 CXXFLAGS="$saved_CXXFLAGS"
453 AC_SUBST(aliasing_flags)
457 # ---------------------
458 # Warnings and checking
459 # ---------------------
461 # Check $CC warning features (if it's GCC).
462 # We want to use -pedantic, but we don't want warnings about
466 # * C++11 narrowing conversions in { }
467 # So, we only use -pedantic if we can disable those warnings.
469 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
470 AC_ARG_ENABLE(build-format-warnings,
471 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
472 [],[enable_build_format_warnings=yes])
473 AS_IF([test $enable_build_format_warnings = no],
474 [wf_opt=-Wno-format],[wf_opt=])
475 ACX_PROG_CXX_WARNING_OPTS(
476 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual $wf_opt])), [loose_warn])
477 ACX_PROG_CC_WARNING_OPTS(
478 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
480 ACX_PROG_CXX_WARNING_OPTS(
481 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
482 ACX_PROG_CXX_WARNING_OPTS(
483 m4_quote(m4_do([-Woverloaded-virtual])), [strict_warn])
484 ACX_PROG_CC_WARNING_OPTS(
485 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
486 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
487 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
488 [-Wno-overlength-strings])), [strict_warn])
489 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
491 # The above macros do nothing if the compiler is not GCC. However, the
492 # Makefile has more goo to add other flags, so these variables are used
493 # to enable warnings only for GCC.
496 if test "x$GCC" = "xyes"; then
497 warn_cflags='$(GCC_WARN_CFLAGS)'
498 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
500 AC_SUBST(warn_cflags)
501 AC_SUBST(warn_cxxflags)
503 # Disable exceptions and RTTI if building with g++
504 ACX_PROG_CC_WARNING_OPTS(
505 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
508 # Enable expensive internal checks
510 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
514 AC_ARG_ENABLE(checking,
515 [AS_HELP_STRING([[--enable-checking[=LIST]]],
516 [enable expensive run-time checks. With LIST,
517 enable only specific categories of checks.
518 Categories are: yes,no,all,none,release.
519 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc,
520 rtlflag,rtl,runtime,tree,valgrind,types])],
521 [ac_checking_flags="${enableval}"],[
522 # Determine the default checks.
523 if test x$is_release = x ; then
524 ac_checking_flags=yes,extra
526 ac_checking_flags=release
528 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
529 for check in release $ac_checking_flags
532 # these set all the flags to specific states
533 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
534 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ;
535 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
536 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
537 ac_tree_checking=1 ; ac_valgrind_checking= ;
538 ac_types_checking=1 ;;
539 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
540 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
541 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
542 ac_rtlflag_checking= ; ac_runtime_checking= ;
543 ac_tree_checking= ; ac_valgrind_checking= ;
544 ac_types_checking= ;;
545 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
546 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ;
547 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
548 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
549 ac_tree_checking=1 ; ac_valgrind_checking= ;
550 ac_types_checking=1 ;;
551 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
552 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
553 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
554 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
555 ac_tree_checking= ; ac_valgrind_checking= ;
556 ac_types_checking= ;;
557 # these enable particular checks
558 assert) ac_assert_checking=1 ;;
559 df) ac_df_checking=1 ;;
560 extra) ac_extra_checking=1 ;;
561 fold) ac_fold_checking=1 ;;
562 gc) ac_gc_checking=1 ;;
563 gcac) ac_gc_always_collect=1 ;;
564 gimple) ac_gimple_checking=1 ;;
565 misc) ac_checking=1 ;;
566 rtl) ac_rtl_checking=1 ;;
567 rtlflag) ac_rtlflag_checking=1 ;;
568 runtime) ac_runtime_checking=1 ;;
569 tree) ac_tree_checking=1 ;;
570 types) ac_types_checking=1 ;;
571 valgrind) ac_valgrind_checking=1 ;;
572 *) AC_MSG_ERROR(unknown check category $check) ;;
578 if test x$ac_checking != x ; then
579 if test x$ac_extra_checking != x ; then
582 AC_DEFINE_UNQUOTED(CHECKING_P, $ac_checking,
583 [Define to 1 if you want more run-time sanity checks. This one gets a grab
584 bag of miscellaneous but relatively cheap checks. Define to 2 if you want
585 also extra run-time checking that might affect code generation.])
586 nocommon_flag=-fno-common
588 AC_DEFINE(CHECKING_P, 0)
590 AC_SUBST(nocommon_flag)
591 if test x$ac_df_checking != x ; then
592 AC_DEFINE(ENABLE_DF_CHECKING, 1,
593 [Define if you want more run-time sanity checks for dataflow.])
595 if test x$ac_assert_checking != x ; then
596 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
597 [Define if you want assertions enabled. This is a cheap check.])
599 if test x$ac_gimple_checking != x ; then
600 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
601 [Define if you want operations on GIMPLE (the basic data structure of
602 the high-level optimizers) to be checked for dynamic type safety at
603 runtime. This is moderately expensive.])
605 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
606 if test x$ac_runtime_checking != x ; then
607 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
608 [Define if you want runtime assertions enabled. This is a cheap check.])
610 if test x$ac_tree_checking != x ; then
611 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
612 [Define if you want all operations on trees (the basic data
613 structure of the front ends) to be checked for dynamic type safety
614 at runtime. This is moderately expensive.
618 if test x$ac_types_checking != x ; then
619 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
620 [Define if you want all gimple types to be verified after gimplifiation.
624 AC_SUBST(TREECHECKING)
625 if test x$ac_rtl_checking != x ; then
626 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
627 [Define if you want all operations on RTL (the basic data structure
628 of the optimizer and back end) to be checked for dynamic type safety
629 at runtime. This is quite expensive.])
631 if test x$ac_rtlflag_checking != x ; then
632 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
633 [Define if you want RTL flag accesses to be checked against the RTL
634 codes that are supported for each access macro. This is relatively
637 if test x$ac_gc_checking != x ; then
638 AC_DEFINE(ENABLE_GC_CHECKING, 1,
639 [Define if you want the garbage collector to do object poisoning and
640 other memory allocation checks. This is quite expensive.])
642 if test x$ac_gc_always_collect != x ; then
643 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
644 [Define if you want the garbage collector to operate in maximally
645 paranoid mode, validating the entire heap and collecting garbage at
646 every opportunity. This is extremely expensive.])
648 if test x$ac_fold_checking != x ; then
649 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
650 [Define if you want fold checked that it never destructs its argument.
651 This is quite expensive.])
653 valgrind_path_defines=
656 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
657 dnl # an if statement. This was the source of very frustrating bugs
658 dnl # in converting to autoconf 2.5x!
659 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
661 # It is certainly possible that there's valgrind but no valgrind.h.
662 # GCC relies on making annotations so we must have both.
663 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
664 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
665 [[#include <valgrind/memcheck.h>
666 #ifndef VALGRIND_DISCARD
667 #error VALGRIND_DISCARD not defined
669 [gcc_cv_header_valgrind_memcheck_h=yes],
670 [gcc_cv_header_valgrind_memcheck_h=no])
671 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
672 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
673 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
674 [[#include <memcheck.h>
675 #ifndef VALGRIND_DISCARD
676 #error VALGRIND_DISCARD not defined
678 [gcc_cv_header_memcheck_h=yes],
679 [gcc_cv_header_memcheck_h=no])
680 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
681 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
682 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
683 [Define if valgrind's valgrind/memcheck.h header is installed.])
685 if test $gcc_cv_header_memcheck_h = yes; then
686 AC_DEFINE(HAVE_MEMCHECK_H, 1,
687 [Define if valgrind's memcheck.h header is installed.])
690 if test x$ac_valgrind_checking != x ; then
691 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
692 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
693 if test "x$valgrind_path" = "x" \
694 || (test $have_valgrind_h = no \
695 && test $gcc_cv_header_memcheck_h = no \
696 && test $gcc_cv_header_valgrind_memcheck_h = no); then
697 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
699 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
700 valgrind_command="$valgrind_path -q"
701 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
702 [Define if you want to run subprograms and generated programs
703 through valgrind (a memory checker). This is extremely expensive.])
705 AC_SUBST(valgrind_path_defines)
706 AC_SUBST(valgrind_command)
708 # Enable code coverage collection
709 AC_ARG_ENABLE(coverage,
710 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
711 [enable compiler's code coverage collection.
712 Use to measure compiler performance and locate
713 unused parts of the compiler. With LEVEL, specify
714 optimization. Values are opt, noopt,
716 [case "${enableval}" in
718 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
721 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
724 # a.k.a. --disable-coverage
728 AC_MSG_ERROR(unknown coverage setting $enableval)
732 AC_SUBST(coverage_flags)
734 AC_ARG_ENABLE(gather-detailed-mem-stats,
735 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
736 [enable detailed memory allocation stats gathering])], [],
737 [enable_gather_detailed_mem_stats=no])
738 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
739 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
740 [Define to enable detailed memory allocation stats gathering.])
742 AC_ARG_ENABLE(valgrind-annotations,
743 [AS_HELP_STRING([--enable-valgrind-annotations],
744 [enable valgrind runtime interaction])], [],
745 [enable_valgrind_annotations=no])
746 if test x$enable_valgrind_annotations != xno \
747 || test x$ac_valgrind_checking != x; then
748 if (test $have_valgrind_h = no \
749 && test $gcc_cv_header_memcheck_h = no \
750 && test $gcc_cv_header_valgrind_memcheck_h = no); then
751 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
753 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
754 [Define to get calls to the valgrind runtime enabled.])
757 # -------------------------------
758 # Miscenalleous configure options
759 # -------------------------------
763 [AS_HELP_STRING([--with-stabs],
764 [arrange to use stabs instead of host debug format])],
768 # Determine whether or not multilibs are enabled.
769 AC_ARG_ENABLE(multilib,
770 [AS_HELP_STRING([--enable-multilib],
771 [enable library support for multiple ABIs])],
772 [], [enable_multilib=yes])
773 AC_SUBST(enable_multilib)
775 # Determine whether or not multiarch is enabled.
776 AC_ARG_ENABLE(multiarch,
777 [AS_HELP_STRING([--enable-multiarch],
778 [enable support for multiarch paths])],
779 [case "${enableval}" in
780 yes|no|auto) enable_multiarch=$enableval;;
781 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
782 esac], [enable_multiarch=auto])
783 if test x${enable_multiarch} = xauto; then
784 if test x${with_native_system_header_dir} != x; then
785 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
788 if test x$host != x$target && test "x$with_sysroot" = x; then
789 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
793 AC_MSG_CHECKING(for multiarch configuration)
794 AC_SUBST(enable_multiarch)
795 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
797 # needed for setting the multiarch name for soft-float/hard-float ABIs
801 # Enable __cxa_atexit for C++.
802 AC_ARG_ENABLE(__cxa_atexit,
803 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
806 # Enable C extension for decimal float if target supports it.
807 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
809 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
810 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
811 [Define to 1 to enable decimal float extension to C.])
813 # Use default_decimal_float for dependency.
814 enable_decimal_float=$default_decimal_float
816 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
817 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
818 [Define to 1 to specify that we are using the BID decimal floating
819 point format instead of DPD])
821 # Enable C extension for fixed-point arithmetic.
822 AC_ARG_ENABLE(fixed-point,
823 [AS_HELP_STRING([--enable-fixed-point],
824 [enable fixed-point arithmetic extension to C])],
829 enable_fixed_point=yes
833 enable_fixed_point=yes
836 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
837 enable_fixed_point=no
841 AC_SUBST(enable_fixed_point)
843 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
844 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
845 [Define to 1 to enable fixed-point arithmetic extension to C.])
848 # Pass with no value to take the default
849 # Pass with a value to specify a thread package
850 AC_ARG_ENABLE(threads,
851 [AS_HELP_STRING([[--enable-threads[=LIB]]],
852 [enable thread usage for target GCC,
853 using LIB thread package])],,
857 [AS_HELP_STRING([--enable-tls],
858 [enable or disable generation of tls code
859 overriding the assembler check for tls support])],
863 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
864 Valid choices are 'yes' and 'no'.]) ;;
868 AC_ARG_ENABLE(objc-gc,
869 [AS_HELP_STRING([--enable-objc-gc],
870 [enable the use of Boehm's garbage collector with
871 the GNU Objective-C runtime])],
872 if test x$enable_objc_gc = xno; then
880 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
881 dwarf2="$with_dwarf2",
884 AC_ARG_ENABLE(shared,
885 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
887 case $enable_shared in
891 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
892 for pkg in $enableval; do
893 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
900 ], [enable_shared=yes])
901 AC_SUBST(enable_shared)
904 [AS_HELP_STRING([--with-specs=SPECS],
905 [add SPECS to driver command-line processing])],
906 [CONFIGURE_SPECS=$withval],
909 AC_SUBST(CONFIGURE_SPECS)
911 ACX_PKGVERSION([GCC])
912 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
914 # Sanity check enable_languages in case someone does not run the toplevel
915 # configure # script.
916 AC_ARG_ENABLE(languages,
917 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
918 [case ,${enable_languages}, in
920 # go safe -- we cannot be much sure without the toplevel
922 # analysis of which target libs are present and usable
926 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
931 enable_languages=c,${enable_languages}
934 [enable_languages=c])
936 if test x"$enable_as_accelerator_for" != x; then
937 AC_DEFINE(ACCEL_COMPILER, 1,
938 [Define if this compiler should be built as the offload target compiler.])
939 enable_as_accelerator=yes
942 # In this case we expect offload compiler to be built as native, so we
943 # need to rename the driver to avoid clashes with host's drivers.
944 program_transform_name="s&^&${target}-&" ;;
946 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
947 program_transform_name=`echo $program_transform_name | sed $sedscript`
948 accel_dir_suffix=/accel/${target_noncanonical}
949 real_target_noncanonical=${enable_as_accelerator_for}
951 AC_SUBST(enable_as_accelerator)
952 AC_SUBST(real_target_noncanonical)
953 AC_SUBST(accel_dir_suffix)
955 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
956 tgt=`echo $tgt | sed 's/=.*//'`
958 if echo "$tgt" | grep "^hsa" > /dev/null ; then
964 if test x"$offload_targets" = x; then
967 offload_targets="$offload_targets,$tgt"
970 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
971 [Define to offload targets, separated by commas.])
972 if test x"$enable_offloading" != x; then
973 AC_DEFINE(ENABLE_OFFLOADING, 1,
974 [Define this to enable support for offloading.])
976 AC_DEFINE(ENABLE_OFFLOADING, 0,
977 [Define this to enable support for offloading.])
980 if test x"$enable_hsa" = x1 ; then
981 AC_DEFINE(ENABLE_HSA, 1,
982 [Define this to enable support for generating HSAIL.])
985 AC_ARG_WITH(multilib-list,
986 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
988 with_multilib_list=default)
990 # -------------------------
991 # Checks for other programs
992 # -------------------------
996 # Find some useful tools
998 # We need awk to create options.c and options.h.
999 # Bail out if it's missing.
1001 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1008 AC_SUBST(ranlib_flags)
1012 # See if cmp has --ignore-initial.
1013 gcc_AC_PROG_CMP_IGNORE_INITIAL
1015 # See if we have the mktemp command.
1016 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1018 # See if makeinfo has been installed and is modern enough
1019 # that we can use it.
1020 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1021 [GNU texinfo.* \([0-9][0-9.]*\)],
1022 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1023 if test $gcc_cv_prog_makeinfo_modern = no; then
1025 *** Makeinfo is missing or too old.
1026 *** Info documentation will not be built.])
1031 AC_SUBST(BUILD_INFO)
1033 # Is pod2man recent enough to regenerate manpages?
1034 AC_MSG_CHECKING([for recent Pod::Man])
1035 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1037 GENERATED_MANPAGES=generated-manpages
1042 AC_SUBST(GENERATED_MANPAGES)
1044 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1047 dnl Don't use AC_PROG_LEX; we insist on flex.
1048 dnl LEXLIB is not useful in gcc.
1049 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1052 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1054 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1055 # check for build == host before using them.
1058 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1059 && test -d ../binutils ; then
1060 NM='${objdir}/../binutils/nm-new'
1062 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1066 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1067 && test -d ../binutils ; then
1068 AR='${objdir}/../binutils/ar'
1070 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1073 # The jit documentation looks better if built with sphinx, but can be
1074 # built with texinfo if sphinx is not available.
1075 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1076 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1078 # --------------------
1079 # Checks for C headers
1080 # --------------------
1082 # Need to reject headers which give warnings, so that the -Werror bootstrap
1083 # works later. *sigh* This needs to come before all header checks.
1090 AC_HEADER_TIOCGWINSZ
1091 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1092 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1093 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1094 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1096 # Check for thread headers.
1097 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1098 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1100 # These tests can't be done till we know if we have limits.h.
1104 # ----------------------
1105 # Checks for C++ headers
1106 # ----------------------
1108 dnl Autoconf will give an error in the configure script if there is no
1109 dnl C++ preprocessor. Hack to prevent that.
1110 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1112 m4_popdef([AC_MSG_ERROR])[]dnl
1114 AC_CHECK_HEADERS(unordered_map)
1115 AC_CHECK_HEADERS(tr1/unordered_map)
1116 AC_CHECK_HEADERS(ext/hash_map)
1119 # Dependency checking.
1123 AC_CONFIG_COMMANDS([gccdepdir],[
1124 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1125 for lang in $subdirs c-family common
1127 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1128 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1130 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1137 # These libraries may be used by collect2.
1138 # We may need a special search path to get them linked.
1139 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1141 for libs in '' -lld -lmld \
1142 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1143 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1146 AC_TRY_LINK_FUNC(ldopen,
1147 [gcc_cv_collect2_libs="$libs"; break])
1150 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1151 case $gcc_cv_collect2_libs in
1153 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1155 AC_SUBST(COLLECT2_LIBS)
1157 # When building Ada code on Alpha, we need exc_resume which is usually in
1158 # -lexc. So test for it.
1161 AC_SEARCH_LIBS(exc_resume, exc)
1164 AC_SUBST(GNAT_LIBEXC)
1166 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1169 AC_SEARCH_LIBS(kstat_open, kstat)
1170 EXTRA_GCC_LIBS="$LIBS"
1172 AC_SUBST(EXTRA_GCC_LIBS)
1174 # Some systems put ldexp and frexp in libm instead of libc; assume
1175 # they're both in the same place. jcf-dump needs them.
1178 AC_SEARCH_LIBS(ldexp, m)
1183 # Use <inttypes.h> only if it exists,
1184 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1186 AC_MSG_CHECKING(for inttypes.h)
1187 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1188 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1189 [[#define __STDC_FORMAT_MACROS
1190 #include <sys/types.h>
1191 #include <inttypes.h>]],
1196 [gcc_cv_header_inttypes_h=yes],
1197 [gcc_cv_header_inttypes_h=no])])
1198 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1199 if test $gcc_cv_header_inttypes_h = yes; then
1200 AC_DEFINE(HAVE_INTTYPES_H, 1,
1201 [Define if you have a working <inttypes.h> header file.])
1204 dnl Disabled until we have a complete test for buggy enum bitfields.
1205 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1207 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1208 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1209 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1210 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1211 putchar_unlocked putc_unlocked)
1212 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1213 popen sysconf strsignal getrusage nl_langinfo \
1214 gettimeofday mbstowcs wcswidth mmap setlocale \
1215 gcc_UNLOCKED_FUNCS madvise)
1217 if test x$ac_cv_func_mbstowcs = xyes; then
1218 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1219 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1225 [gcc_cv_func_mbstowcs_works=yes],
1226 [gcc_cv_func_mbstowcs_works=no],
1227 [gcc_cv_func_mbstowcs_works=yes])])
1228 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1229 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1230 [Define this macro if mbstowcs does not crash when its
1231 first argument is NULL.])
1235 AC_CHECK_TYPE(ssize_t, int)
1236 AC_CHECK_TYPE(caddr_t, char *)
1238 GCC_AC_FUNC_MMAP_BLACKLIST
1242 # Under VMS, vfork works very differently than on Unix. The standard test
1243 # won't work, and it isn't easily adaptable. It makes more sense to
1245 ac_cv_func_vfork_works=yes
1252 # Until we have in-tree GNU iconv:
1254 if test -f "$LTLIBICONV"; then
1255 LIBICONV_DEP=$LTLIBICONV
1257 AC_SUBST(LIBICONV_DEP)
1263 # We will need to find libiberty.h and ansidecl.h
1264 saved_CFLAGS="$CFLAGS"
1265 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1266 saved_CXXFLAGS="$CXXFLAGS"
1267 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1269 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1270 # normal autoconf function for these. But force definition of
1271 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1272 # basename handling in libiberty.h.
1273 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1274 #undef HAVE_DECL_BASENAME
1275 #define HAVE_DECL_BASENAME 1
1276 #include "ansidecl.h"
1277 #include "system.h"])
1279 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1280 madvise stpcpy strnlen strsignal strverscmp \
1281 strtol strtoul strtoll strtoull setenv unsetenv \
1282 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1283 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1284 #include "ansidecl.h"
1285 #include "system.h"])
1287 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1288 #include "ansidecl.h"
1290 #ifdef HAVE_SYS_RESOURCE_H
1291 #include <sys/resource.h>
1295 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1296 #include "ansidecl.h"
1298 #ifdef HAVE_SYS_RESOURCE_H
1299 #include <sys/resource.h>
1301 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1302 [Define to `long' if <sys/resource.h> doesn't define.])])
1304 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1305 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1306 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1307 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1308 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1309 #include "ansidecl.h"
1318 gcc_AC_CHECK_DECLS(times, , ,[
1319 #include "ansidecl.h"
1321 #ifdef HAVE_SYS_TIMES_H
1322 #include <sys/times.h>
1326 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1327 #include "ansidecl.h"
1332 # More time-related stuff.
1333 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1334 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1335 #include "ansidecl.h"
1337 #ifdef HAVE_SYS_TIMES_H
1338 #include <sys/times.h>
1340 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1341 if test $ac_cv_struct_tms = yes; then
1342 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1343 [Define if <sys/times.h> defines struct tms.])
1346 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1347 # revisit after autoconf 2.50.
1348 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1349 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1350 #include "ansidecl.h"
1352 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1353 if test $gcc_cv_type_clock_t = yes; then
1354 AC_DEFINE(HAVE_CLOCK_T, 1,
1355 [Define if <time.h> defines clock_t.])
1358 # Check if F_SETLKW is supported by fcntl.
1359 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1360 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1361 #include <fcntl.h>]], [[
1367 return fcntl (1, F_SETLKW, &fl);]])],
1368 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1369 if test $ac_cv_f_setlkw = yes; then
1370 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1371 [Define if F_SETLKW supported by fcntl.])
1374 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1375 CFLAGS="$saved_CFLAGS"
1376 CXXFLAGS="$saved_CXXFLAGS"
1378 # mkdir takes a single argument on some systems.
1379 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1387 # With Setjmp/Longjmp based exception handling.
1388 AC_ARG_ENABLE(sjlj-exceptions,
1389 [AS_HELP_STRING([--enable-sjlj-exceptions],
1390 [arrange to use setjmp/longjmp exception handling])],
1393 if test $enableval != yes; then
1394 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1399 force_sjlj_exceptions=yes],
1402 force_sjlj_exceptions=yes
1406 force_sjlj_exceptions=yes
1410 force_sjlj_exceptions=no
1413 if test $force_sjlj_exceptions = yes; then
1414 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1415 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1416 [Define 0/1 to force the choice for exception handling model.])
1419 # --------------------------------------------------------
1420 # Build, host, and target specific configuration fragments
1421 # --------------------------------------------------------
1423 # Collect build-machine-specific information.
1424 . ${srcdir}/config.build
1426 # Collect host-machine-specific information.
1427 . ${srcdir}/config.host
1431 # Collect target-machine-specific information.
1432 . ${srcdir}/config.gcc
1434 extra_objs="${host_extra_objs} ${extra_objs}"
1435 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1437 # Default the target-machine variables that were not explicitly set.
1438 if test x"$tm_file" = x
1439 then tm_file=$cpu_type/$cpu_type.h; fi
1441 if test x"$extra_headers" = x
1442 then extra_headers=; fi
1444 if test x$md_file = x
1445 then md_file=$cpu_type/$cpu_type.md; fi
1447 if test x$out_file = x
1448 then out_file=$cpu_type/$cpu_type.c; fi
1450 if test x"$tmake_file" = x
1451 then tmake_file=$cpu_type/t-$cpu_type
1454 # Support --enable-initfini-array.
1455 if test x$enable_initfini_array != xno; then
1456 tm_file="${tm_file} initfini-array.h"
1459 if test x"$dwarf2" = xyes
1460 then tm_file="$tm_file tm-dwarf2.h"
1463 # Say what files are being used for the output code and MD file.
1464 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1465 echo "Using \`$srcdir/config/$md_file' as machine description file."
1467 # If any of the xm_file variables contain nonexistent files, warn
1468 # about them and drop them.
1471 for x in $build_xm_file; do
1472 if test -f $srcdir/config/$x
1474 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1480 for x in $host_xm_file; do
1481 if test -f $srcdir/config/$x
1483 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1489 for x in $xm_file; do
1490 if test -f $srcdir/config/$x
1492 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1498 for f in $tm_file; do
1501 if test $count = ax; then
1502 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1504 echo "Using the following target machine macro files:"
1505 for f in $tm_file; do
1506 echo " $srcdir/config/$f"
1510 if test x$use_long_long_for_widest_fast_int = xyes; then
1511 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1512 [Define to 1 if the 'long long' type is wider than 'long' but still
1513 efficiently supported by the host hardware.])
1516 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1517 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1519 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1520 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1523 for f in $host_xm_file; do
1526 if test $count = a; then
1528 elif test $count = ax; then
1529 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1531 echo "Using the following host machine macro files:"
1532 for f in $host_xm_file; do
1533 echo " $srcdir/config/$f"
1536 echo "Using ${out_host_hook_obj} for host machine hooks."
1538 if test "$host_xm_file" != "$build_xm_file"; then
1540 for f in $build_xm_file; do
1543 if test $count = a; then
1545 elif test $count = ax; then
1546 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1548 echo "Using the following build machine macro files:"
1549 for f in $build_xm_file; do
1550 echo " $srcdir/config/$f"
1555 if test -n "$configured_native_system_header_dir"; then
1556 native_system_header_dir=$configured_native_system_header_dir
1558 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1559 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1563 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1564 gcc_cv_mcontext_underscores,
1566 #include <sys/cdefs.h>
1567 #include <sys/signal.h>
1568 #include <ucontext.h>
1569 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1571 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1572 if test $gcc_cv_mcontext_underscores = yes; then
1573 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1574 [mcontext_t fields start with __])
1583 # Check if a valid thread package
1584 case ${enable_threads} in
1587 target_thread_file='single'
1591 target_thread_file='single'
1593 aix | dce | lynx | mipssde | posix | rtems | \
1594 single | tpf | vxworks | win32)
1595 target_thread_file=${enable_threads}
1598 echo "${enable_threads} is an unknown thread package" 1>&2
1603 if test x${thread_file} = x; then
1604 # No thread file set by target-specific clauses in config.gcc,
1605 # so use file chosen by default logic above
1606 thread_file=${target_thread_file}
1614 if test x$enable___cxa_atexit = xyes || \
1615 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1616 if test x$host = x$target; then
1618 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1619 # keyed to flag_use_cxa_atexit
1627 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1628 [echo "__cxa_atexit can't be enabled on this target"])
1632 # We can't check for __cxa_atexit when building a cross, so assume
1636 if test x$use_cxa_atexit = xyes; then
1637 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1638 [Define if you want to use __cxa_atexit, rather than atexit, to
1639 register C++ destructors for local statics and global objects.
1640 This is essential for fully standards-compliant handling of
1641 destructors, but requires __cxa_atexit in libc.])
1645 # Look for a file containing extra machine modes.
1646 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1647 extra_modes_file='$(srcdir)'/config/${extra_modes}
1648 AC_SUBST(extra_modes_file)
1649 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1650 [Define to the name of a file containing a list of extra machine modes
1651 for this architecture.])
1654 # Convert extra_options into a form suitable for Makefile use.
1657 for f in $extra_options; do
1658 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1659 all_opt_files="$all_opt_files $srcdir/config/$f"
1661 AC_SUBST(extra_opt_files)
1663 # auto-host.h is the file containing items generated by autoconf and is
1664 # the first file included by config.h.
1665 # If host=build, it is correct to have bconfig include auto-host.h
1666 # as well. If host!=build, we are in error and need to do more
1667 # work to find out the build config parameters.
1668 if test x$host = x$build
1670 build_auto=auto-host.h
1672 # We create a subdir, then run autoconf in the subdir.
1673 # To prevent recursion we set host and build for the new
1674 # invocation of configure to the build for this invocation
1681 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1682 *) realsrcdir=../${srcdir};;
1684 # Clearing GMPINC is necessary to prevent host headers being
1685 # used by the build compiler. Defining GENERATOR_FILE stops
1686 # system.h from including gmp.h.
1687 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1688 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1689 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1690 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1691 ${realsrcdir}/configure \
1692 --enable-languages=${enable_languages-all} \
1693 --target=$target_alias --host=$build_alias --build=$build_alias
1695 # We just finished tests for the build machine, so rename
1696 # the file auto-build.h in the gcc directory.
1697 mv auto-host.h ../auto-build.h
1700 build_auto=auto-build.h
1702 AC_SUBST(build_subdir)
1704 tm_file="${tm_file} defaults.h"
1705 tm_p_file="${tm_p_file} tm-preds.h"
1706 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1707 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1708 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1709 # put this back in temporarily.
1710 xm_file="auto-host.h ansidecl.h ${xm_file}"
1717 # Compile in configure arguments.
1718 if test -f configargs.h ; then
1719 # Being re-configured.
1720 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1721 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1723 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1726 # Double all backslashes and backslash all quotes to turn
1727 # gcc_config_arguments into a C string.
1728 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1729 $gcc_config_arguments
1731 gcc_config_arguments_str=`cat conftest.out`
1734 cat > configargs.h <<EOF
1735 /* Generated automatically. */
1736 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1737 static const char thread_model[] = "$thread_file";
1739 static const struct {
1740 const char *name, *value;
1741 } configure_default_options[] = $configure_default_options;
1746 gcc_BASEVER=`cat $srcdir/BASE-VER`
1747 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1748 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1749 if test -f $srcdir/REVISION ; then
1750 gcc_REVISION=`cat $srcdir/REVISION`
1754 cat > plugin-version.h <<EOF
1755 #include "configargs.h"
1757 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1758 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1759 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1760 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1762 static char basever[] = "$gcc_BASEVER";
1763 static char datestamp[] = "$gcc_DATESTAMP";
1764 static char devphase[] = "$gcc_DEVPHASE";
1765 static char revision[] = "$gcc_REVISION";
1767 /* FIXME plugins: We should make the version information more precise.
1768 One way to do is to add a checksum. */
1770 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1772 configuration_arguments};
1776 # Internationalization
1777 ZW_GNU_GETTEXT_SISTER_DIR
1779 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1780 # -liconv on the link line twice.
1781 case "$LIBINTL" in *$LIBICONV*)
1785 AC_ARG_ENABLE(secureplt,
1786 [AS_HELP_STRING([--enable-secureplt],
1787 [enable -msecure-plt by default for PowerPC])],
1790 AC_ARG_ENABLE(leading-mingw64-underscores,
1791 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1792 [enable leading underscores on 64 bit mingw targets]),
1794 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1795 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1796 [Define if we should use leading underscore on 64 bit mingw targets])])
1799 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1802 AC_ARG_ENABLE(frame-pointer,
1803 [AS_HELP_STRING([--enable-frame-pointer],
1804 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1807 linux* | darwin[[8912]]*)
1808 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1810 enable_frame_pointer=no
1813 enable_frame_pointer=yes
1818 # Windows32 Registry support for specifying GCC installation paths.
1819 AC_ARG_ENABLE(win32-registry,
1820 [AS_HELP_STRING([--disable-win32-registry],
1821 [disable lookup of installation paths in the
1822 Registry on Windows hosts])
1823 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1824 AS_HELP_STRING([--enable-win32-registry=KEY],
1825 [use KEY instead of GCC version as the last portion
1826 of the registry key])],,)
1829 win32 | pe | cygwin* | mingw32*)
1830 if test "x$enable_win32_registry" != xno; then
1831 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1834 if test "x$enable_win32_registry" != xno; then
1835 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1836 [Define to 1 if installation paths should be looked up in the Windows
1837 Registry. Ignored on non-Windows hosts.])
1839 if test "x$enable_win32_registry" != xyes \
1840 && test "x$enable_win32_registry" != x; then
1841 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1842 [Define to be the last component of the Windows registry key under which
1843 to look for installation paths. The full key used will be
1844 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1845 The default is the GCC version number.])
1851 # Get an absolute path to the GCC top-level source directory
1852 holddir=`${PWDCMD-pwd}`
1854 topdir=`${PWDCMD-pwd}`
1857 # Conditionalize the makefile for this host machine.
1859 for f in ${host_xmake_file}
1861 if test -f ${srcdir}/config/$f
1863 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1867 # Conditionalize the makefile for this target machine.
1869 for f in ${tmake_file}
1871 if test -f ${srcdir}/config/$f
1873 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1876 tmake_file="${tmake_file_}"
1878 out_object_file=`basename $out_file .c`.o
1879 common_out_object_file=`basename $common_out_file .c`.o
1881 tm_file_list="options.h"
1882 tm_include_list="options.h insn-constants.h"
1883 for f in $tm_file; do
1886 f=`echo $f | sed 's/^..//'`
1887 tm_file_list="${tm_file_list} $f"
1888 tm_include_list="${tm_include_list} $f"
1891 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1892 tm_include_list="${tm_include_list} $f"
1895 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1896 tm_include_list="${tm_include_list} config/$f"
1903 for f in $tm_p_file; do
1906 tm_p_file_list="${tm_p_file_list} $f"
1907 tm_p_include_list="${tm_p_include_list} $f"
1910 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1911 tm_p_include_list="${tm_p_include_list} config/$f"
1917 for f in $xm_file; do
1920 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1921 xm_include_list="${xm_include_list} $f"
1924 xm_file_list="${xm_file_list} $f"
1925 xm_include_list="${xm_include_list} $f"
1928 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1929 xm_include_list="${xm_include_list} config/$f"
1935 host_xm_include_list=
1936 for f in $host_xm_file; do
1939 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1940 host_xm_include_list="${host_xm_include_list} $f"
1943 host_xm_file_list="${host_xm_file_list} $f"
1944 host_xm_include_list="${host_xm_include_list} $f"
1947 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1948 host_xm_include_list="${host_xm_include_list} config/$f"
1954 for f in $build_xm_file; do
1957 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1958 build_xm_include_list="${build_xm_include_list} $f"
1960 auto-build.h | auto-host.h )
1961 build_xm_file_list="${build_xm_file_list} $f"
1962 build_xm_include_list="${build_xm_include_list} $f"
1965 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1966 build_xm_include_list="${build_xm_include_list} config/$f"
1971 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1972 # cross-compiler which does not use the native headers and libraries.
1973 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1974 CROSS= AC_SUBST(CROSS)
1975 ALL=all.internal AC_SUBST(ALL)
1976 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1978 if test "x$with_build_sysroot" != x; then
1979 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1981 # This value is used, even on a native system, because
1982 # CROSS_SYSTEM_HEADER_DIR is just
1983 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1984 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1987 if test x$host != x$target
1989 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1991 SYSTEM_HEADER_DIR=$build_system_header_dir
1992 case "$host","$target" in
1993 # Darwin crosses can use the host system's libraries and headers,
1994 # because of the fat library support. Of course, it must be the
1995 # same version of Darwin on both sides. Allow the user to
1996 # just say --target=foo-darwin without a version number to mean
1997 # "the version on this system".
1998 *-*-darwin*,*-*-darwin*)
1999 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
2000 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
2001 if test $hostos = $targetos -o $targetos = darwin ; then
2003 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
2008 i?86-*-*,x86_64-*-* \
2009 | powerpc*-*-*,powerpc64*-*-*)
2010 CROSS="$CROSS -DNATIVE_CROSS" ;;
2015 if test "x$with_headers" = x; then
2022 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2023 SYSTEM_HEADER_DIR=$build_system_header_dir
2026 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
2027 if test "x$with_headers" != x; then
2028 target_header_dir=$with_headers
2029 elif test "x$with_sysroot" = x; then
2030 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2031 elif test "x$with_build_sysroot" != "x"; then
2032 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2033 elif test "x$with_sysroot" = xyes; then
2034 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2036 target_header_dir="${with_sysroot}${native_system_header_dir}"
2039 target_header_dir=${native_system_header_dir}
2042 # If this is a cross-compiler that does not
2043 # have its own set of headers then define
2046 # If this is using newlib, without having the headers available now,
2047 # then define inhibit_libc in LIBGCC2_CFLAGS.
2048 # This prevents libgcc2 from containing any code which requires libc
2050 : ${inhibit_libc=false}
2051 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2052 test x$with_newlib = xyes ; } &&
2053 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2056 AC_SUBST(inhibit_libc)
2058 # When building gcc with a cross-compiler, we need to adjust things so
2059 # that the generator programs are still built with the native compiler.
2060 # Also, we cannot run fixincludes.
2062 # These are the normal (build=host) settings:
2063 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2064 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2065 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2066 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2067 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2068 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2070 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2071 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2073 # And these apply if build != host, or we are generating coverage data
2074 if test x$build != x$host || test "x$coverage_flags" != x
2076 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2077 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2078 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2080 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2081 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2082 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2083 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2085 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2086 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2088 # Expand extra_headers to include complete path.
2089 # This substitutes for lots of t-* files.
2091 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2092 for file in ${extra_headers} ; do
2093 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2096 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2097 if test x"$use_gcc_tgmath" = xyes
2098 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2101 # Define collect2 in Makefile.
2102 case $host_can_use_collect2 in
2104 *) collect2='collect2$(exeext)' ;;
2106 AC_SUBST([collect2])
2108 # Add a definition of USE_COLLECT2 if system wants one.
2109 case $use_collect2 in
2110 no) use_collect2= ;;
2113 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2114 xm_defines="${xm_defines} USE_COLLECT2"
2115 case $host_can_use_collect2 in
2117 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2123 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2124 [Define to the name of the LTO plugin DSO that must be
2125 passed to the linker's -plugin=LIB option.])
2127 # ---------------------------
2128 # Assembler & linker features
2129 # ---------------------------
2131 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2132 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2133 # However when ld-new is first executed from the build tree, libtool will
2134 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2135 # to the build tree. While doing this we need to use the previous-stage
2136 # linker, or we have an infinite loop. The presence of a shell script as
2137 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2138 # the gcc/collect-ld script. So we need to know how libtool works, or
2139 # exec-tool will fail.
2141 m4_defun([_LT_CONFIG_COMMANDS], [])
2144 AC_SUBST(enable_fast_install)
2146 # Identify the assembler which will work hand-in-glove with the newly
2147 # built GCC, so that we can examine its features. This is the assembler
2148 # which will be driven by the driver program.
2150 # If build != host, and we aren't building gas in-tree, we identify a
2151 # build->target assembler and hope that it will have the same features
2152 # as the host->target assembler we'll be using.
2153 gcc_cv_gas_major_version=
2154 gcc_cv_gas_minor_version=
2155 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2157 m4_pattern_allow([AS_FOR_TARGET])dnl
2158 AS_VAR_SET_IF(gcc_cv_as,, [
2159 if test -x "$DEFAULT_ASSEMBLER"; then
2160 gcc_cv_as="$DEFAULT_ASSEMBLER"
2161 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2162 && test -f ../gas/Makefile \
2163 && test x$build = x$host; then
2164 gcc_cv_as=../gas/as-new$build_exeext
2165 elif test -x as$build_exeext; then
2166 # Build using assembler in the current directory.
2167 gcc_cv_as=./as$build_exeext
2168 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2169 gcc_cv_as="$AS_FOR_TARGET"
2171 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2174 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2175 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2176 case "$ORIGINAL_AS_FOR_TARGET" in
2177 ./as | ./as$build_exeext) ;;
2178 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2181 AC_MSG_CHECKING(what assembler to use)
2182 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2183 # Single tree build which includes gas. We want to prefer it
2184 # over whatever linker top-level may have detected, since
2185 # we'll use what we're building after installation anyway.
2186 AC_MSG_RESULT(newly built gas)
2188 _gcc_COMPUTE_GAS_VERSION
2189 in_tree_gas_is_elf=no
2190 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2191 || (grep 'obj_format = multi' ../gas/Makefile \
2192 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2194 in_tree_gas_is_elf=yes
2197 AC_MSG_RESULT($gcc_cv_as)
2203 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2204 [case "${enableval}" in
2210 install_gold_as_default=no
2212 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2213 [case "${enableval}" in
2215 install_gold_as_default=yes
2218 if test x${default_ld} != x; then
2219 install_gold_as_default=yes
2225 AC_MSG_ERROR([invalid --enable-gold argument])
2229 # Identify the linker which will work hand-in-glove with the newly
2230 # built GCC, so that we can examine its features. This is the linker
2231 # which will be driven by the driver program.
2233 # If build != host, and we aren't building gas in-tree, we identify a
2234 # build->target linker and hope that it will have the same features
2235 # as the host->target linker we'll be using.
2236 gcc_cv_gld_major_version=
2237 gcc_cv_gld_minor_version=
2238 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2239 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2240 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2242 AS_VAR_SET_IF(gcc_cv_ld,, [
2243 if test -x "$DEFAULT_LINKER"; then
2244 gcc_cv_ld="$DEFAULT_LINKER"
2245 elif test $install_gold_as_default = yes \
2246 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2247 && test -f ../gold/Makefile \
2248 && test x$build = x$host; then
2249 gcc_cv_ld=../gold/ld-new$build_exeext
2250 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2251 && test -f ../ld/Makefile \
2252 && test x$build = x$host; then
2253 gcc_cv_ld=../ld/ld-new$build_exeext
2254 elif test -x collect-ld$build_exeext; then
2255 # Build using linker in the current directory.
2256 gcc_cv_ld=./collect-ld$build_exeext
2257 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2258 gcc_cv_ld="$LD_FOR_TARGET"
2260 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2263 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2264 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2265 # if the PLUGIN_LD is set ld-new, just have it as ld
2266 # as that is the installed named.
2267 if test x$PLUGIN_LD_SUFFIX = xld-new \
2268 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2271 AC_ARG_WITH(plugin-ld,
2272 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2273 [if test x"$withval" != x; then
2274 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2275 PLUGIN_LD_SUFFIX="$withval"
2277 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2278 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2280 # Check to see if we are using gold instead of ld
2281 AC_MSG_CHECKING(whether we are using gold)
2283 if test x$gcc_cv_ld != x; then
2284 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2285 | grep "GNU gold" > /dev/null; then
2289 AC_MSG_RESULT($ld_is_gold)
2291 AC_MSG_CHECKING(gold linker with split stack support as non default)
2292 # Check to see if default ld is not gold, but gold is
2293 # available and has support for split stack. If gcc was configured
2294 # with gold then no checking is done.
2296 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2298 # For platforms other than powerpc64*, enable as appropriate.
2301 ld_gold=`which ${gcc_cv_ld}.gold`
2302 # Make sure this gold has minimal split stack support
2303 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2304 ld_vers=`$ld_gold --version | sed 1q`
2305 gold_vers=`echo $ld_vers | sed -n \
2306 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2308 # check that the gold version contains the complete split stack support
2309 # on powerpc64 big and little endian
2311 case "$gold_vers" in
2312 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2314 *) gold_non_default=no
2320 if test $gold_non_default = yes; then
2321 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2322 [Define if the gold linker supports split stack and is available as a non-default])
2325 AC_MSG_RESULT($gold_non_default)
2327 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2328 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2329 case "$ORIGINAL_LD_FOR_TARGET" in
2330 ./collect-ld | ./collect-ld$build_exeext) ;;
2331 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2334 AC_MSG_CHECKING(what linker to use)
2335 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2336 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2337 # Single tree build which includes ld. We want to prefer it
2338 # over whatever linker top-level may have detected, since
2339 # we'll use what we're building after installation anyway.
2340 AC_MSG_RESULT(newly built ld)
2342 in_tree_ld_is_elf=no
2343 if (grep 'EMUL = .*elf' ../ld/Makefile \
2344 || grep 'EMUL = .*linux' ../ld/Makefile \
2345 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2346 in_tree_ld_is_elf=yes
2347 elif test "$ld_is_gold" = yes; then
2348 in_tree_ld_is_elf=yes
2350 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
2353 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2354 if test x$gcc_cv_gld_version != x; then
2358 case $gcc_cv_gld_version in
2361 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2364 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2365 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2367 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2368 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2370 AC_MSG_RESULT($gcc_cv_ld)
2372 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2373 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2374 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2377 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2378 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2380 # Figure out what nm we will be using.
2381 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2382 AS_VAR_SET_IF(gcc_cv_nm,, [
2383 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2384 && test -f ../binutils/Makefile \
2385 && test x$build = x$host; then
2386 gcc_cv_nm=../binutils/nm-new$build_exeext
2387 elif test -x nm$build_exeext; then
2388 gcc_cv_nm=./nm$build_exeext
2389 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2390 gcc_cv_nm="$NM_FOR_TARGET"
2392 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2395 AC_MSG_CHECKING(what nm to use)
2396 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2397 # Single tree build which includes binutils.
2398 AC_MSG_RESULT(newly built nm)
2401 AC_MSG_RESULT($gcc_cv_nm)
2405 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2406 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2407 case "$ORIGINAL_NM_FOR_TARGET" in
2408 ./nm | ./nm$build_exeext) ;;
2409 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2413 # Figure out what objdump we will be using.
2414 AS_VAR_SET_IF(gcc_cv_objdump,, [
2415 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2416 && test -f ../binutils/Makefile \
2417 && test x$build = x$host; then
2418 # Single tree build which includes binutils.
2419 gcc_cv_objdump=../binutils/objdump$build_exeext
2420 elif test -x objdump$build_exeext; then
2421 gcc_cv_objdump=./objdump$build_exeext
2422 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2423 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2425 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2428 AC_MSG_CHECKING(what objdump to use)
2429 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2430 # Single tree build which includes binutils.
2431 AC_MSG_RESULT(newly built objdump)
2432 elif test x$gcc_cv_objdump = x; then
2433 AC_MSG_RESULT(not found)
2435 AC_MSG_RESULT($gcc_cv_objdump)
2438 # Figure out what readelf we will be using.
2439 AS_VAR_SET_IF(gcc_cv_readelf,, [
2440 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2441 && test -f ../binutils/Makefile \
2442 && test x$build = x$host; then
2443 # Single tree build which includes binutils.
2444 gcc_cv_readelf=../binutils/readelf$build_exeext
2445 elif test -x readelf$build_exeext; then
2446 gcc_cv_readelf=./readelf$build_exeext
2447 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2448 gcc_cv_readelf="$READELF_FOR_TARGET"
2450 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2453 AC_MSG_CHECKING(what readelf to use)
2454 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2455 # Single tree build which includes binutils.
2456 AC_MSG_RESULT(newly built readelf)
2457 elif test x$gcc_cv_readelf = x; then
2458 AC_MSG_RESULT(not found)
2460 AC_MSG_RESULT($gcc_cv_readelf)
2463 # Figure out what assembler alignment features are present.
2464 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2468 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2469 [Define if your assembler supports .balign and .p2align.])])
2471 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2474 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2475 [Define if your assembler supports specifying the maximum number
2476 of bytes to skip when using the GAS .p2align command.])])
2478 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2481 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2482 [Define if your assembler supports .literal16.])])
2484 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2486 [conftest_label1: .word 0
2488 conftest_label2: .word 0
2490 [if test x$gcc_cv_nm != x; then
2491 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2492 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2493 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2495 else gcc_cv_as_subsection_m1=yes
2497 rm -f conftest.nm1 conftest.nm2
2499 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2500 [Define if your assembler supports .subsection and .subsection -1 starts
2501 emitting at the beginning of your section.])])
2503 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2506 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2508 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2510 [ .weakref foobar, barfnot],,
2511 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2513 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2516 .NSUBSPA $CODE$,COMDAT],,
2517 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2519 # .hidden needs to be supported in both the assembler and the linker,
2520 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2521 # This is irritatingly difficult to feature test for; we have to check the
2522 # date string after the version number. If we've got an in-tree
2523 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2525 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2526 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2532 # Darwin as has some visibility support, though with a different syntax.
2533 gcc_cv_as_hidden=yes
2537 # gnu_indirect_function type is an extension proposed at
2538 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2539 # selection of function implementation
2540 AC_ARG_ENABLE(gnu-indirect-function,
2541 [AS_HELP_STRING([--enable-gnu-indirect-function],
2542 [enable the use of the @gnu_indirect_function to glibc systems])],
2543 [case $enable_gnu_indirect_function in
2545 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2546 Valid choices are 'yes' and 'no'.]) ;;
2548 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2550 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2551 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2552 [Define if your system supports gnu indirect functions.])
2556 if test $in_tree_ld != yes ; then
2557 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2558 if echo "$ld_ver" | grep GNU > /dev/null; then
2559 if test x"$ld_is_gold" = xyes; then
2560 # GNU gold --version looks like this:
2562 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2564 # We extract the binutils version which is more familiar and specific
2565 # than the gold version.
2566 ld_vers=`echo $ld_ver | sed -n \
2567 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2569 # GNU ld --version looks like this:
2571 # GNU ld (GNU Binutils) 2.21.51.20110225
2572 ld_vers=`echo $ld_ver | sed -n \
2573 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2575 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2576 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2577 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2578 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2582 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2585 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2586 # /usr/ccs/bin/ld has been configured.
2587 ld_ver=`$gcc_cv_ld -V 2>&1`
2588 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2589 ld_vers=`echo $ld_ver | sed -n \
2590 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2591 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2592 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2600 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2601 [[if test $in_tree_ld = yes ; then
2603 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2604 && test $in_tree_ld_is_elf = yes; then
2605 gcc_cv_ld_hidden=yes
2608 gcc_cv_ld_hidden=yes
2609 if test x"$ld_is_gold" = xyes; then
2611 elif echo "$ld_ver" | grep GNU > /dev/null; then
2613 mmix-knuth-mmixware)
2614 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2618 if test 0"$ld_date" -lt 20020404; then
2619 if test -n "$ld_date"; then
2620 # If there was date string, but was earlier than 2002-04-04, fail
2622 elif test -z "$ld_vers"; then
2623 # If there was no date string nor ld version number, something is wrong
2626 test -z "$ld_vers_patch" && ld_vers_patch=0
2627 if test "$ld_vers_major" -lt 2; then
2629 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2630 gcc_cv_ld_hidden="no"
2631 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2639 # Darwin ld has some visibility support.
2640 gcc_cv_ld_hidden=yes
2642 hppa64*-*-hpux* | ia64*-*-hpux*)
2643 gcc_cv_ld_hidden=yes
2645 *-*-solaris2.1[0-9]*)
2646 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2647 # .symbolic was only added in Solaris 9 12/02.
2648 gcc_cv_ld_hidden=yes
2656 libgcc_visibility=no
2657 AC_SUBST(libgcc_visibility)
2658 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2659 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2660 libgcc_visibility=yes
2661 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2662 [Define if your assembler and linker support .hidden.])
2665 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2666 gcc_cv_ld_ro_rw_mix=unknown
2667 if test $in_tree_ld = yes ; then
2668 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2669 && test $in_tree_ld_is_elf = yes; then
2670 gcc_cv_ld_ro_rw_mix=read-write
2672 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2673 echo '.section myfoosect, "a"' > conftest1.s
2674 echo '.section myfoosect, "aw"' > conftest2.s
2675 echo '.byte 1' >> conftest2.s
2676 echo '.section myfoosect, "a"' > conftest3.s
2677 echo '.byte 0' >> conftest3.s
2678 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2679 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2680 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2681 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2682 conftest2.o conftest3.o > /dev/null 2>&1; then
2683 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2684 | sed -e '/myfoosect/!d' -e N`
2685 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2686 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2687 gcc_cv_ld_ro_rw_mix=read-only
2689 gcc_cv_ld_ro_rw_mix=read-write
2694 rm -f conftest.* conftest[123].*
2697 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2698 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2699 [Define if your linker links a mix of read-only
2700 and read-write sections into a read-write section.])
2702 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2704 gcc_AC_INITFINI_ARRAY
2706 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2707 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2715 [[# GAS versions before 2.11 do not support uleb128,
2716 # despite appearing to.
2717 # ??? There exists an elf-specific test that will crash
2718 # the assembler. Perhaps it's better to figure out whether
2719 # arbitrary sections are supported and try the test.
2720 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2721 if echo "$as_ver" | grep GNU > /dev/null; then
2722 as_vers=`echo $as_ver | sed -n \
2723 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2724 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2725 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2726 if test $as_major -eq 2 && test $as_minor -lt 11
2728 else gcc_cv_as_leb128=yes
2731 [AC_DEFINE(HAVE_AS_LEB128, 1,
2732 [Define if your assembler supports .sleb128 and .uleb128.])])
2734 # Check if we have assembler support for unwind directives.
2735 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2742 .cfi_escape 1, 2, 3, 4, 5
2746 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2747 # read-only and read-write sections, we need to make sure that the
2748 # assembler used emits read-write .eh_frame sections.
2749 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2750 if test "x$gcc_cv_objdump" != x; then
2751 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2752 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2753 gcc_cv_as_cfi_directive=no
2756 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2757 # On Solaris/x86, make sure that GCC and assembler agree on using
2758 # read-only .eh_frame sections for 64-bit.
2759 if test x$gas = xyes; then
2760 as_ix86_64_opt="--64"
2762 as_ix86_64_opt="-xarch=amd64"
2764 if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \
2765 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2766 sed -e /.eh_frame/!d -e N | \
2767 grep READONLY > /dev/null; then
2768 gcc_cv_as_cfi_directive=yes
2770 gcc_cv_as_cfi_directive=no
2774 gcc_cv_as_cfi_directive=yes
2779 # no objdump, err on the side of caution
2780 gcc_cv_as_cfi_directive=no
2783 gcc_cv_as_cfi_directive=yes
2787 gcc_cv_as_cfi_directive=yes
2790 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2791 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2795 .cfi_adjust_cfa_offset 64
2797 .cfi_adjust_cfa_offset 128
2800 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2801 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2802 gcc_cv_as_cfi_advance_working=yes
2806 # no objdump, err on the side of caution
2807 gcc_cv_as_cfi_advance_working=no
2809 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2810 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2811 [`if test $gcc_cv_as_cfi_directive = yes \
2812 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2813 [Define 0/1 if your assembler supports CFI directives.])
2815 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2816 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2817 gcc_cv_as_cfi_personality_directive, ,,
2820 .cfi_personality 0, symbol
2822 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2823 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2824 then echo 1; else echo 0; fi`],
2825 [Define 0/1 if your assembler supports .cfi_personality.])
2827 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2828 gcc_cv_as_cfi_sections_directive, ,,
2830 .cfi_sections .debug_frame, .eh_frame
2834 win32 | pe | cygwin* | mingw32*)
2835 # Need to check that we generated the correct relocation for the
2836 # .debug_frame section. This was fixed for binutils 2.21.
2837 gcc_cv_as_cfi_sections_directive=no
2838 if test "x$gcc_cv_objdump" != x; then
2839 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2840 grep secrel > /dev/null; then
2841 gcc_cv_as_cfi_sections_directive=yes
2846 gcc_cv_as_cfi_sections_directive=yes
2849 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2850 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2851 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2852 then echo 1; else echo 0; fi`],
2853 [Define 0/1 if your assembler supports .cfi_sections.])
2855 # GAS versions up to and including 2.11.0 may mis-optimize
2857 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2865 .section .eh_frame,"aw",@progbits
2867 .4byte .LECIE1-.LSCIE1
2881 .4byte .LEFDE1-.LASFDE1
2883 .4byte .LASFDE1-__FRAME_BEGIN__
2891 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2892 cat > conftest.lit <<EOF
2893 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2894 0010 01000000 12000000 18000000 00000000 ................
2895 0020 08000000 04080000 0044 .........D @&t@
2897 cat > conftest.big <<EOF
2898 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2899 0010 00000001 00000012 00000018 00000000 ................
2900 0020 00000008 04000000 0844 .........D @&t@
2902 # If the assembler didn't choke, and we can objdump,
2903 # and we got the correct data, then succeed.
2904 # The text in the here-document typically retains its unix-style line
2905 # endings, while the output of objdump will use host line endings.
2906 # Therefore, use diff -b for the comparisons.
2907 if test x$gcc_cv_objdump != x \
2908 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2909 | tail -3 > conftest.got \
2910 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2911 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2913 gcc_cv_as_eh_frame=yes
2914 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2915 gcc_cv_as_eh_frame=buggy
2917 # Uh oh, what do we do now?
2918 gcc_cv_as_eh_frame=no
2921 if test $gcc_cv_as_eh_frame = buggy; then
2922 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2923 [Define if your assembler mis-optimizes .eh_frame data.])
2926 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2927 [elf,2,12,0], [--fatal-warnings],
2928 [.section .rodata.str, "aMS", @progbits, 1])
2929 if test $gcc_cv_as_shf_merge = no; then
2930 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2931 [elf,2,12,0], [--fatal-warnings],
2932 [.section .rodata.str, "aMS", %progbits, 1])
2934 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2935 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2936 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2938 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
2939 [.stabs "gcc2_compiled.",60,0,0,0],,
2940 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
2941 [Define if your assembler supports .stabs.])])
2943 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2944 gcc_cv_as_comdat_group,
2945 [elf,2,16,0], [--fatal-warnings],
2946 [.section .text,"axG",@progbits,.foo,comdat])
2947 if test $gcc_cv_as_comdat_group = yes; then
2948 gcc_cv_as_comdat_group_percent=no
2949 gcc_cv_as_comdat_group_group=no
2951 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2952 gcc_cv_as_comdat_group_percent,
2953 [elf,2,16,0], [--fatal-warnings],
2954 [.section .text,"axG",%progbits,.foo,comdat])
2955 if test $gcc_cv_as_comdat_group_percent = yes; then
2956 gcc_cv_as_comdat_group_group=no
2959 # Sun as uses a completely different syntax.
2964 .group foo,".text%foo",#comdat
2965 .section ".text%foo", #alloc,#execinstr,#progbits
2970 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2972 .group foo,.text%foo,#comdat
2973 .section .text%foo, "ax", @progbits
2979 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2980 gcc_cv_as_comdat_group_group,
2984 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2985 gcc_cv_as_comdat_group_group=no
2989 if test x"$ld_is_gold" = xyes; then
2991 elif test $in_tree_ld = yes ; then
2993 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2994 && test $in_tree_ld_is_elf = yes; then
2997 elif echo "$ld_ver" | grep GNU > /dev/null; then
2999 if test 0"$ld_date" -lt 20050308; then
3000 if test -n "$ld_date"; then
3001 # If there was date string, but was earlier than 2005-03-08, fail
3003 elif test "$ld_vers_major" -lt 2; then
3005 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3012 *-*-solaris2.1[1-9]*)
3014 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3015 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3018 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3019 # least ld version 1.2267.
3020 if test "$ld_vers_major" -gt 1; then
3022 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3024 elif test "$ld_vers_minor" -ge 2267; then
3029 # Assume linkers other than GNU ld don't support COMDAT group.
3035 # Allow overriding the automatic COMDAT group tests above.
3036 AC_ARG_ENABLE(comdat,
3037 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3038 [comdat_group="$enable_comdat"])
3039 if test $comdat_group = no; then
3040 gcc_cv_as_comdat_group=no
3041 gcc_cv_as_comdat_group_percent=no
3042 gcc_cv_as_comdat_group_group=no
3044 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3045 [`if test $gcc_cv_as_comdat_group = yes \
3046 || test $gcc_cv_as_comdat_group_percent = yes \
3047 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3048 [Define 0/1 if your assembler and linker support COMDAT groups.])
3050 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3051 gcc_cv_as_discriminator,
3055 .loc 1 1 0 discriminator 1],,
3056 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3057 [Define if your assembler supports the .loc discriminator sub-directive.])])
3059 # Thread-local storage - the check is heavily parameterized.
3068 .section ".tdata","awT",@progbits
3071 ldq $27,__tls_get_addr($29) !literal!1
3072 lda $16,foo($29) !tlsgd!1
3073 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3074 ldq $27,__tls_get_addr($29) !literal!2
3075 lda $16,foo($29) !tlsldm!2
3076 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3077 ldq $1,foo($29) !gotdtprel
3078 ldah $2,foo($29) !dtprelhi
3079 lda $3,foo($2) !dtprello
3080 lda $4,foo($29) !dtprel
3081 ldq $1,foo($29) !gottprel
3082 ldah $2,foo($29) !tprelhi
3083 lda $3,foo($2) !tprello
3084 lda $4,foo($29) !tprel'
3087 tls_as_opt=--fatal-warnings
3089 cris-*-*|crisv32-*-*)
3091 .section ".tdata","awT",@progbits
3098 tls_as_opt=--fatal-warnings
3102 .section ".tdata","awT",@progbits
3114 .section ".tdata","awT",@progbits
3118 addil LT%foo-$tls_gdidx$,gp
3119 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3122 addil LT%foo-$tls_ldidx$,gp
3124 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3125 addil LR%foo-$tls_dtpoff$,%ret0
3126 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3128 addil LT%foo-$tls_ieoff$,gp
3129 ldw RT%foo-$tls_ieoff$(%r1),%t2
3132 addil LR%foo-$tls_leoff$,%t1
3133 ldo RR%foo-$tls_leoff$(%r1),%t2'
3136 tls_as_opt=--fatal-warnings
3140 .section ".tdata","awT",%progbits
3151 i[34567]86-*-* | x86_64-*-*)
3153 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3160 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3162 .section .tdata,"awt",@progbits'
3167 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3168 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3172 .section ".tdata","awT",@progbits'
3176 tls_as_opt="--fatal-warnings"
3180 conftest_s="$conftest_s
3184 leal foo@tlsgd(,%ebx,1), %eax
3185 leal foo@tlsldm(%ebx), %eax
3186 leal foo@dtpoff(%eax), %edx
3187 movl foo@gottpoff(%ebx), %eax
3188 subl foo@gottpoff(%ebx), %eax
3189 addl foo@gotntpoff(%ebx), %eax
3190 movl foo@indntpoff, %eax
3191 movl \$foo@tpoff, %eax
3192 subl \$foo@tpoff, %eax
3193 leal foo@ntpoff(%ecx), %eax"
3196 if test x$on_solaris = xyes; then
3198 yes) tls_as_opt="$tls_as_opt --64" ;;
3199 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3202 conftest_s="$conftest_s
3206 leaq foo@tlsgd(%rip), %rdi
3207 leaq foo@tlsld(%rip), %rdi
3208 leaq foo@dtpoff(%rax), %rdx
3209 movq foo@gottpoff(%rip), %rax
3210 movq \$foo@tpoff, %rax"
3216 .section ".tdata","awT",@progbits
3219 addl r16 = @ltoff(@dtpmod(foo#)), gp
3220 addl r17 = @ltoff(@dtprel(foo#)), gp
3221 addl r18 = @ltoff(@tprel(foo#)), gp
3222 addl r19 = @dtprel(foo#), gp
3223 adds r21 = @dtprel(foo#), r13
3224 movl r23 = @dtprel(foo#)
3225 addl r20 = @tprel(foo#), gp
3226 adds r22 = @tprel(foo#), r13
3227 movl r24 = @tprel(foo#)'
3230 tls_as_opt=--fatal-warnings
3234 .section .tdata,"awT",@progbits
3238 addik r5,r20,x@TLSGD
3239 addik r5,r20,x@TLSLDM'
3242 tls_as_opt='--fatal-warnings'
3246 .section .tdata,"awT",@progbits
3250 addiu $4, $28, %tlsgd(x)
3251 addiu $4, $28, %tlsldm(x)
3252 lui $4, %dtprel_hi(x)
3253 addiu $4, $4, %dtprel_lo(x)
3254 lw $4, %gottprel(x)($28)
3255 lui $4, %tprel_hi(x)
3256 addiu $4, $4, %tprel_lo(x)'
3259 tls_as_opt='-32 --fatal-warnings'
3263 .section .tdata,"awT",@progbits
3268 move.l x@TLSGD(%a5),%a0
3269 move.l x@TLSLDM(%a5),%a0
3270 move.l x@TLSLDO(%a5),%a0
3271 move.l x@TLSIE(%a5),%a0
3272 move.l x@TLSLE(%a5),%a0'
3275 tls_as_opt='--fatal-warnings'
3279 .section ".tdata","awT",@progbits'
3282 tls_as_opt="--fatal-warnings"
3286 .section ".tdata","awT",%progbits
3290 add x0, x0, #:tlsgd_lo12:x
3295 tls_as_opt='--fatal-warnings'
3299 .extern __get_tpointer
3317 .section ".tdata","awT",@progbits
3325 addi 3,2,ld0@got@tlsgd
3331 addi 3,2,x1@got@tlsld
3337 addis 9,3,x2@dtprel@ha
3338 addi 9,9,x2@dtprel@l
3341 ld 9,x3@got@dtprel(2)
3347 tls_as_opt="-a64 --fatal-warnings"
3351 .section ".tdata","awT",@progbits
3359 addi 3,31,ld0@got@tlsgd
3361 addi 3,31,x1@got@tlsld
3364 addis 9,3,x2@dtprel@ha
3365 addi 9,9,x2@dtprel@l
3366 lwz 9,x3@got@tprel(31)
3369 addis 9,2,x2@tprel@ha
3370 addi 9,9,x2@tprel@l'
3373 tls_as_opt="-a32 --fatal-warnings"
3377 .section ".tdata","awT",@progbits
3386 l %r1,foo@GOTNTPOFF(%r12)
3387 l %r1,0(%r1):tls_load:foo
3388 bas %r14,0(%r1,%r13):tls_gdcall:foo
3389 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3392 tls_as_opt="-m31 --fatal-warnings"
3396 .section ".tdata","awT",@progbits
3404 lg %r1,foo@GOTNTPOFF(%r12)
3405 larl %r1,foo@INDNTPOFF
3406 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3407 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3410 tls_as_opt="-m64 -Aesame --fatal-warnings"
3412 sh-*-* | sh[123456789lbe]*-*-*)
3414 .section ".tdata","awT",@progbits
3424 tls_as_opt=--fatal-warnings
3428 sparc*-sun-solaris2.*)
3435 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3437 .section ".tdata",#alloc,#write,#tls'
3442 .section ".tdata","awT",@progbits'
3445 tls_as_opt="-32 --fatal-warnings"
3447 conftest_s="$conftest_s
3450 sethi %tgd_hi22(foo), %o0
3451 add %o0, %tgd_lo10(foo), %o1
3452 add %l7, %o1, %o0, %tgd_add(foo)
3453 call __tls_get_addr, %tgd_call(foo)
3454 sethi %tldm_hi22(foo), %l1
3455 add %l1, %tldm_lo10(foo), %l2
3456 add %l7, %l2, %o0, %tldm_add(foo)
3457 call __tls_get_addr, %tldm_call(foo)
3458 sethi %tldo_hix22(foo), %l3
3459 xor %l3, %tldo_lox10(foo), %l4
3460 add %o0, %l4, %l5, %tldo_add(foo)
3461 sethi %tie_hi22(foo), %o3
3462 add %o3, %tie_lo10(foo), %o3
3463 ld [%l7 + %o3], %o2, %tie_ld(foo)
3464 add %g7, %o2, %o4, %tie_add(foo)
3465 sethi %tle_hix22(foo), %l1
3466 xor %l1, %tle_lox10(foo), %o5
3467 ld [%g7 + %o5], %o1"
3471 .section ".tdata","awT",@progbits
3474 addli r0, zero, tls_gd(foo)
3475 auli r0, zero, tls_gd_ha16(foo)
3476 addli r0, r0, tls_gd_lo16(foo)
3478 addli r0, zero, tls_ie(foo)
3479 auli r0, r0, tls_ie_ha16(foo)
3480 addli r0, r0, tls_ie_lo16(foo)'
3483 tls_as_opt="--fatal-warnings"
3487 .section ".tdata","awT",@progbits
3490 shl16insli r0, zero, hw0_last_tls_gd(foo)
3491 shl16insli r0, zero, hw1_last_tls_gd(foo)
3492 shl16insli r0, r0, hw0_tls_gd(foo)
3494 shl16insli r0, zero, hw1_last_tls_ie(foo)
3495 shl16insli r0, r0, hw0_tls_ie(foo)'
3498 tls_as_opt="--fatal-warnings"
3502 .section ".tdata","awT",@progbits
3505 movi a8, foo@TLSFUNC
3506 movi a10, foo@TLSARG
3507 callx8.tls a8, foo@TLSCALL'
3514 if test "x$enable_tls" = xno ; then
3515 : # TLS explicitly disabled.
3516 elif test "x$enable_tls" = xyes ; then
3517 set_have_as_tls=yes # TLS explicitly enabled.
3518 elif test -z "$tls_first_major"; then
3519 : # If we don't have a check, assume no support.
3521 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3522 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3523 [set_have_as_tls=yes])
3525 if test $set_have_as_tls = yes ; then
3526 AC_DEFINE(HAVE_AS_TLS, 1,
3527 [Define if your assembler and linker support thread-local storage.])
3530 # Target-specific assembler checks.
3532 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3533 gcc_cv_ld_static_dynamic=no
3534 gcc_cv_ld_static_option='-Bstatic'
3535 gcc_cv_ld_dynamic_option='-Bdynamic'
3536 if test $in_tree_ld = yes ; then
3537 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3538 gcc_cv_ld_static_dynamic=yes
3540 elif test x$gcc_cv_ld != x; then
3541 # Check if linker supports -Bstatic/-Bdynamic option
3542 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3543 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3544 gcc_cv_ld_static_dynamic=yes
3547 # AIX ld uses -b flags
3548 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3549 gcc_cv_ld_static_dynamic=yes
3550 gcc_cv_ld_static_option="-bstatic"
3551 gcc_cv_ld_dynamic_option="-bdynamic"
3553 # HP-UX ld uses -a flags to select between shared and archive.
3555 if test x"$gnu_ld" = xno; then
3556 gcc_cv_ld_static_dynamic=yes
3557 gcc_cv_ld_static_option="-aarchive_shared"
3558 gcc_cv_ld_dynamic_option="-adefault"
3561 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3563 gcc_cv_ld_static_dynamic=yes
3568 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3569 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3570 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3571 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3572 [Define to the linker option to disable use of shared objects.])
3573 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3574 [Define to the linker option to enable use of shared objects.])
3576 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3578 if test x"$demangler_in_ld" = xyes; then
3579 AC_MSG_CHECKING(linker --demangle support)
3580 gcc_cv_ld_demangle=no
3581 if test $in_tree_ld = yes; then
3582 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3583 gcc_cv_ld_demangle=yes
3585 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3586 # Check if the GNU linker supports --demangle option
3587 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3588 gcc_cv_ld_demangle=yes
3591 if test x"$gcc_cv_ld_demangle" = xyes; then
3592 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3593 [Define if your linker supports --demangle option.])
3595 AC_MSG_RESULT($gcc_cv_ld_demangle)
3598 AC_MSG_CHECKING(linker plugin support)
3600 if test -f liblto_plugin.la; then
3601 save_ld_ver="$ld_ver"
3602 save_ld_vers_major="$ld_vers_major"
3603 save_ld_vers_minor="$ld_vers_minor"
3604 save_ld_is_gold="$ld_is_gold"
3608 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3610 # FIXME: ld_is_gold?
3611 ld_vers_major="$gcc_cv_gld_major_version"
3612 ld_vers_minor="$gcc_cv_gld_minor_version"
3614 # Determine plugin linker version.
3615 # FIXME: Partial duplicate from above, generalize.
3617 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3618 if echo "$ld_ver" | grep GNU > /dev/null; then
3619 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3621 ld_vers=`echo $ld_ver | sed -n \
3622 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3624 ld_vers=`echo $ld_ver | sed -n \
3625 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3627 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3628 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3633 # Determine plugin support.
3634 if echo "$ld_ver" | grep GNU > /dev/null; then
3635 # Require GNU ld or gold 2.21+ for plugin support by default.
3636 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3638 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3639 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3644 ld_ver="$save_ld_ver"
3645 ld_vers_major="$save_ld_vers_major"
3646 ld_vers_minor="$save_ld_vers_minor"
3647 ld_is_gold="$save_ld_is_gold"
3649 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3650 [Define to the level of your linker's plugin support.])
3651 AC_MSG_RESULT($gcc_cv_lto_plugin)
3655 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3656 [-mabi=lp64], [.text],,,)
3657 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3658 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3659 [Define if your assembler supports the -mabi option.])
3661 if test x$with_abi = xilp32; then
3662 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3663 Upgrade the Assembler.])
3665 if test x"$with_multilib_list" = xdefault; then
3666 TM_MULTILIB_CONFIG=lp64
3668 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3669 for aarch64_multilib in ${aarch64_multilibs}; do
3670 case ${aarch64_multilib} in
3672 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3673 Upgrade the Assembler.])
3681 # Check if we have binutils support for relocations types needed by -fpic
3682 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3685 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3686 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3687 [Define if your assembler supports relocs needed by -fpic.])])
3688 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3689 AC_ARG_ENABLE(fix-cortex-a53-835769,
3691 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3692 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3693 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3694 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3699 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3704 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3705 Valid choices are 'yes' and 'no'.])
3711 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3712 AC_ARG_ENABLE(fix-cortex-a53-843419,
3714 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3715 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3716 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3717 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3722 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3727 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3728 Valid choices are 'yes' and 'no'.])
3736 # All TARGET_ABI_OSF targets.
3737 alpha*-*-linux* | alpha*-*-*bsd*)
3738 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3739 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3742 extbl $3, $2, $3 !lituse_bytoff!1
3743 ldq $2, a($29) !literal!1
3744 ldq $4, b($29) !literal!2
3745 ldq_u $3, 0($2) !lituse_base!1
3746 ldq $27, f($29) !literal!5
3747 jsr $26, ($27), f !lituse_jsr!5
3748 ldah $29, 0($26) !gpdisp!3
3749 lda $0, c($29) !gprel
3750 ldah $1, d($29) !gprelhigh
3751 lda $1, d($1) !gprellow
3752 lda $29, 0($29) !gpdisp!3],,
3753 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3754 [Define if your assembler supports explicit relocations.])])
3755 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3756 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3759 ldq $27, a($29) !literal!1
3760 jsr $26, ($27), a !lituse_jsrdirect!1],,
3761 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3762 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3766 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3767 [--mlink-relax], [.text],,
3768 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3769 [Define if your avr assembler supports --mlink-relax option.])])
3771 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3773 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3774 [Define if your avr assembler supports -mrmw option.])])
3778 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3779 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3780 [-no-mul-bug-abort], [.text],,
3781 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3782 [Define if your assembler supports the -no-mul-bug-abort option.])])
3786 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3787 [.register %g2, #scratch],,
3788 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3789 [Define if your assembler supports .register.])])
3791 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3793 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3794 [Define if your assembler supports -relax option.])])
3796 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3797 gcc_cv_as_sparc_gotdata_op,,
3804 sethi %gdop_hix22(foo), %g1
3805 xor %g1, %gdop_lox10(foo), %g1
3806 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3807 [if test x$gcc_cv_ld != x \
3808 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3809 if test x$gcc_cv_objdump != x; then
3810 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3811 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3812 gcc_cv_as_sparc_gotdata_op=no
3814 gcc_cv_as_sparc_gotdata_op=yes
3819 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3820 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3822 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3823 gcc_cv_as_sparc_ua_pcrel,,
3831 .uaword %r_disp32(foo)],
3832 [if test x$gcc_cv_ld != x \
3833 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3834 gcc_cv_as_sparc_ua_pcrel=yes
3837 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3838 [Define if your assembler and linker support unaligned PC relative relocs.])
3840 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3841 gcc_cv_as_sparc_ua_pcrel_hidden,,
3846 .uaword %r_disp32(foo)
3847 .byte 0x32, 0x33, 0x34
3852 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3853 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3854 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3855 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3856 if $gcc_cv_objdump -R conftest 2> /dev/null \
3857 | grep 'DISP32' > /dev/null 2>&1; then
3860 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3864 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3865 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3866 ]) # unaligned pcrel relocs
3868 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3869 gcc_cv_as_sparc_offsetable_lo10,,
3872 or %g1, %lo(ab) + 12, %g1
3873 or %g1, %lo(ab + 12), %g1],
3874 [if test x$gcc_cv_objdump != x \
3875 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3876 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3877 gcc_cv_as_sparc_offsetable_lo10=yes
3879 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3880 [Define if your assembler supports offsetable %lo().])])
3882 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3883 gcc_cv_as_sparc_fmaf,,
3886 .register %g2, #scratch
3887 .register %g3, #scratch
3889 fmaddd %f0, %f2, %f4, %f6
3890 addxccc %g1, %g2, %g3
3891 fsrl32 %f2, %f4, %f8
3892 fnaddd %f10, %f12, %f14],,
3893 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3894 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3896 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3897 gcc_cv_as_sparc_sparc4,,
3900 .register %g2, #scratch
3901 .register %g3, #scratch
3904 1: cwbneg %g2, %g3, 1f
3907 aes_kexpand0 %f4, %f6, %f8
3908 des_round %f38, %f40, %f42, %f44
3909 camellia_f %f54, %f56, %f58, %f60
3910 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3911 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3912 [Define if your assembler supports SPARC4 instructions.])])
3914 gcc_GAS_CHECK_FEATURE([LEON instructions],
3915 gcc_cv_as_sparc_leon,,
3918 .register %g2, #scratch
3919 .register %g3, #scratch
3923 casa [[%g2]] 0xb, %g3, %g1],,
3924 [AC_DEFINE(HAVE_AS_LEON, 1,
3925 [Define if your assembler supports LEON instructions.])])
3929 i[34567]86-*-* | x86_64-*-*)
3933 # Full C++ conformance when using a shared libstdc++-v3 requires some
3934 # support from the Cygwin DLL, which in more recent versions exports
3935 # wrappers to aid in interposing and redirecting operators new, delete,
3936 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3937 # are configuring for a version of Cygwin that exports the wrappers.
3938 if test x$host = x$target && test x$host_cpu = xi686; then
3939 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3941 # Can't check presence of libc functions during cross-compile, so
3942 # we just have to assume we're building for an up-to-date target.
3943 gcc_ac_cygwin_dll_wrappers=yes
3945 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3946 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3947 [Define if you want to generate code by default that assumes that the
3948 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3951 cygwin* | pe | mingw32* | interix*)
3952 # Recent binutils allows the three-operand form of ".comm" on PE. This
3953 # definition is used unconditionally to initialise the default state of
3954 # the target option variable that governs usage of the feature.
3955 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3956 [2,19,52],,[.comm foo,1,32])
3957 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3958 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3959 [Define if your assembler supports specifying the alignment
3960 of objects allocated using the GAS .comm command.])
3961 # Used for DWARF 2 in PE
3962 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3963 gcc_cv_as_ix86_pe_secrel32,
3969 [if test x$gcc_cv_ld != x \
3970 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3971 gcc_cv_as_ix86_pe_secrel32=yes
3974 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3975 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3976 # Test if the assembler supports the extended form of the .section
3977 # directive that specifies section alignment. LTO support uses this,
3978 # but normally only after installation, so we warn but don't fail the
3979 # configure if LTO is enabled but the assembler does not support it.
3980 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3981 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3982 if test x$gcc_cv_as_section_has_align != xyes; then
3983 case ",$enable_languages," in
3985 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3992 # Test if the assembler supports the section flag 'e' for specifying
3993 # an excluded section.
3994 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3995 [2,22,51], [--fatal-warnings],
3998 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3999 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
4000 [Define if your assembler supports specifying the section flag e.])
4002 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4003 gcc_cv_as_ix86_filds,,,
4004 [filds (%ebp); fists (%ebp)],,
4005 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4006 [Define if your assembler uses filds and fists mnemonics.])])
4008 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4009 gcc_cv_as_ix86_fildq,,,
4010 [fildq (%ebp); fistpq (%ebp)],,
4011 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4012 [Define if your assembler uses fildq and fistq mnemonics.])])
4014 gcc_GAS_CHECK_FEATURE([cmov syntax],
4015 gcc_cv_as_ix86_cmov_sun_syntax,,,
4016 [cmovl.l %edx, %eax],,
4017 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4018 [Define if your assembler supports the Sun syntax for cmov.])])
4020 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4021 gcc_cv_as_ix86_ffreep,,,
4023 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4024 [Define if your assembler supports the ffreep mnemonic.])])
4026 gcc_GAS_CHECK_FEATURE([.quad directive],
4027 gcc_cv_as_ix86_quad,,,
4029 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4030 [Define if your assembler supports the .quad directive.])])
4032 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4033 gcc_cv_as_ix86_sahf,,,
4036 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4037 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4039 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4040 gcc_cv_as_ix86_interunit_movq,,,
4044 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4045 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4046 [Define if your assembler supports interunit movq mnemonic.])
4048 gcc_GAS_CHECK_FEATURE([hle prefixes],
4049 gcc_cv_as_ix86_hle,,,
4050 [lock xacquire cmpxchg %esi, (%ecx)],,
4051 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4052 [Define if your assembler supports HLE prefixes.])])
4054 gcc_GAS_CHECK_FEATURE([swap suffix],
4055 gcc_cv_as_ix86_swap,,,
4056 [movl.s %esp, %ebp],,
4057 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4058 [Define if your assembler supports the swap suffix.])])
4060 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4061 gcc_cv_as_ix86_diff_sect_delta,,,
4069 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4070 [Define if your assembler supports the subtraction of symbols in different sections.])])
4072 # These two are used unconditionally by i386.[ch]; it is to be defined
4073 # to 1 if the feature is present, 0 otherwise.
4074 as_ix86_gotoff_in_data_opt=
4075 if test x$gas = xyes; then
4076 as_ix86_gotoff_in_data_opt="--32"
4078 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4079 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4080 [$as_ix86_gotoff_in_data_opt],
4086 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4087 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4088 [Define true if the assembler supports '.long foo@GOTOFF'.])
4090 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4091 gcc_cv_as_ix86_rep_lock_prefix,,,
4097 lock addl %edi, (%eax,%esi)
4098 lock orl $0, (%esp)],,
4099 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4100 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4102 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4103 gcc_cv_as_ix86_ud2,,,
4105 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4106 [Define if your assembler supports the 'ud2' mnemonic.])])
4108 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4109 gcc_cv_as_ix86_tlsgdplt,,,
4110 [call tls_gd@tlsgdplt],
4111 [if test x$gcc_cv_ld != x \
4112 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4113 gcc_cv_as_ix86_tlsgdplt=yes
4116 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4117 [Define if your assembler and linker support @tlsgdplt.])])
4120 .section .tdata,"aw'$tls_section_flag'",@progbits
4122 .section .text,"ax",@progbits
4123 call tls_ld@tlsldmplt'
4124 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4125 gcc_cv_as_ix86_tlsldmplt,,,
4127 [if test x$gcc_cv_ld != x \
4128 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4129 gcc_cv_as_ix86_tlsldmplt=yes
4132 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4133 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4134 [Define to 1 if your assembler and linker support @tlsldmplt.])
4136 # Enforce 32-bit output with gas and gld.
4137 if test x$gas = xyes; then
4138 as_ix86_tls_ldm_opt="--32"
4140 if echo "$ld_ver" | grep GNU > /dev/null; then
4141 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4142 ld_ix86_tls_ldm_opt="-melf_i386_sol2"
4144 ld_ix86_tls_ldm_opt="-melf_i386"
4148 .section .text,"ax",@progbits
4150 .type _start, @function
4152 leal value@tlsldm(%ebx), %eax
4153 call ___tls_get_addr@plt
4155 .section .tdata,"aw'$tls_section_flag'",@progbits
4156 .type value, @object
4158 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4159 gcc_cv_as_ix86_tlsldm,,
4160 [$as_ix86_tls_ldm_opt],
4162 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4163 && $gcc_cv_ld $ld_ix86_tls_ldm_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4164 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4165 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4166 gcc_cv_as_ix86_tlsldm=yes
4170 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4171 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4172 [Define to 1 if your assembler and linker support @tlsldm.])
4177 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4178 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4180 addl r15 = @ltoffx(x#), gp
4182 ld8.mov r16 = [[r15]], x#],,
4183 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4184 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4192 gcc_GAS_CHECK_FEATURE([.machine directive support],
4193 gcc_cv_as_machine_directive,,,
4194 [ .machine ppc7400])
4195 if test x$gcc_cv_as_machine_directive != xyes; then
4196 echo "*** This target requires an assembler supporting \".machine\"" >&2
4197 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4198 test x$build = x$target && exit 1
4204 *-*-aix*) conftest_s=' .machine "pwr5"
4207 *-*-darwin*) conftest_s=' .text
4209 *) conftest_s=' .machine power4
4214 gcc_GAS_CHECK_FEATURE([mfcr field support],
4215 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4217 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4218 [Define if your assembler supports mfcr field.])])
4221 *-*-aix*) conftest_s=' .machine "pwr5"
4224 *) conftest_s=' .machine power5
4229 gcc_GAS_CHECK_FEATURE([popcntb support],
4230 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4232 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4233 [Define if your assembler supports popcntb field.])])
4236 *-*-aix*) conftest_s=' .machine "pwr5x"
4239 *) conftest_s=' .machine power5
4244 gcc_GAS_CHECK_FEATURE([fp round support],
4245 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4247 [AC_DEFINE(HAVE_AS_FPRND, 1,
4248 [Define if your assembler supports fprnd.])])
4251 *-*-aix*) conftest_s=' .machine "pwr6"
4254 *) conftest_s=' .machine power6
4259 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4260 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4262 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4263 [Define if your assembler supports mffgpr and mftgpr.])])
4266 *-*-aix*) conftest_s=' .csect .text[[PR]]
4268 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4272 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4273 *) conftest_s=' .text
4275 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4278 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4279 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4281 [AC_DEFINE(HAVE_AS_REL16, 1,
4282 [Define if your assembler supports R_PPC_REL16 relocs.])])
4285 *-*-aix*) conftest_s=' .machine "pwr6"
4288 *) conftest_s=' .machine power6
4293 gcc_GAS_CHECK_FEATURE([compare bytes support],
4294 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4296 [AC_DEFINE(HAVE_AS_CMPB, 1,
4297 [Define if your assembler supports cmpb.])])
4300 *-*-aix*) conftest_s=' .machine "pwr6"
4303 *) conftest_s=' .machine power6
4308 gcc_GAS_CHECK_FEATURE([decimal float support],
4309 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4311 [AC_DEFINE(HAVE_AS_DFP, 1,
4312 [Define if your assembler supports DFP instructions.])])
4315 *-*-aix*) conftest_s=' .machine "pwr7"
4318 *) conftest_s=' .machine power7
4323 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4324 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4326 [AC_DEFINE(HAVE_AS_VSX, 1,
4327 [Define if your assembler supports VSX instructions.])])
4330 *-*-aix*) conftest_s=' .machine "pwr7"
4333 *) conftest_s=' .machine power7
4338 gcc_GAS_CHECK_FEATURE([popcntd support],
4339 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4341 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4342 [Define if your assembler supports POPCNTD instructions.])])
4345 *-*-aix*) conftest_s=' .machine "pwr8"
4346 .csect .text[[PR]]';;
4347 *) conftest_s=' .machine power8
4351 gcc_GAS_CHECK_FEATURE([power8 support],
4352 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4354 [AC_DEFINE(HAVE_AS_POWER8, 1,
4355 [Define if your assembler supports POWER8 instructions.])])
4358 *-*-aix*) conftest_s=' .machine "pwr9"
4359 .csect .text[[PR]]';;
4360 *) conftest_s=' .machine power9
4364 gcc_GAS_CHECK_FEATURE([power9 support],
4365 gcc_cv_as_powerpc_power9, [2,19,2], -a32,
4367 [AC_DEFINE(HAVE_AS_POWER9, 1,
4368 [Define if your assembler supports POWER9 instructions.])])
4371 *-*-aix*) conftest_s=' .csect .text[[PR]]
4373 *) conftest_s=' .text
4377 gcc_GAS_CHECK_FEATURE([lwsync support],
4378 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4380 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4381 [Define if your assembler supports LWSYNC instructions.])])
4384 *-*-aix*) conftest_s=' .machine "476"
4387 *) conftest_s=' .machine "476"
4392 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4393 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4395 [AC_DEFINE(HAVE_AS_DCI, 1,
4396 [Define if your assembler supports the DCI/ICI instructions.])])
4398 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4399 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4400 [.gnu_attribute 4,1],,
4401 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4402 [Define if your assembler supports .gnu_attribute.])])
4404 gcc_GAS_CHECK_FEATURE([tls marker support],
4405 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4406 [ bl __tls_get_addr(x@tlsgd)],,
4407 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4408 [Define if your assembler supports arg info for __tls_get_addr.])])
4410 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4411 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4412 [ .reloc .,R_PPC64_ENTRY; nop],,
4413 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4414 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4418 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4419 gcc_cv_as_aix_ref, [2,21,0],,
4420 [ .csect stuff[[rw]]
4426 [AC_DEFINE(HAVE_AS_REF, 1,
4427 [Define if your assembler supports .ref])])
4429 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4430 gcc_cv_as_aix_dwloc, [2,21,0],,
4435 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4436 [Define if your assembler supports AIX debug frame section label reference.])])
4442 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4443 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4444 [ lw $4,%gp_rel(foo)($4)],,
4445 [if test x$target_cpu_default = x
4446 then target_cpu_default=MASK_EXPLICIT_RELOCS
4447 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4450 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4451 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4452 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4453 [Define if the assembler understands -mno-shared.])])
4455 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4456 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4457 [.gnu_attribute 4,1],,
4458 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4459 [Define if your assembler supports .gnu_attribute.])])
4461 gcc_GAS_CHECK_FEATURE([.module support],
4462 gcc_cv_as_mips_dot_module,,[-32],
4465 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4466 [Define if your assembler supports .module.])])
4467 if test x$gcc_cv_as_mips_dot_module = xno \
4468 && test x$with_fp_32 != x; then
4470 [Requesting --with-fp-32= requires assembler support for .module.])
4473 gcc_GAS_CHECK_FEATURE([.micromips support],
4474 gcc_cv_as_micromips_support,,[--fatal-warnings],
4476 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4477 [Define if your assembler supports the .set micromips directive])])
4479 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4480 gcc_cv_as_mips_dtprelword, [2,18,0],,
4481 [.section .tdata,"awT",@progbits
4485 .dtprelword x+0x8000],,
4486 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4487 [Define if your assembler supports .dtprelword.])])
4489 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4490 gcc_cv_as_mips_dspr1_mult,,,
4500 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4501 [Define if your assembler supports DSPR1 mult.])])
4503 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4504 gcc_cv_as_ld_jalr_reloc=no
4505 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4506 if test $in_tree_ld = yes ; then
4507 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4508 && test $in_tree_ld_is_elf = yes; then
4509 gcc_cv_as_ld_jalr_reloc=yes
4511 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4512 echo ' .ent x' > conftest.s
4513 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4514 echo ' lw $25,%call16(y)($28)' >> conftest.s
4515 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4516 echo '1: jalr $25' >> conftest.s
4517 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4518 echo '1: jalr $25' >> conftest.s
4519 echo ' .end x' >> conftest.s
4520 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4521 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4522 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4523 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4524 gcc_cv_as_ld_jalr_reloc=yes
4530 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4531 if test x$target_cpu_default = x; then
4532 target_cpu_default=MASK_RELAX_PIC_CALLS
4534 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4537 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4539 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4540 [gcc_cv_ld_mips_personality_relaxation],
4541 [gcc_cv_ld_mips_personality_relaxation=no
4542 if test $in_tree_ld = yes ; then
4543 if test "$gcc_cv_gld_major_version" -eq 2 \
4544 -a "$gcc_cv_gld_minor_version" -ge 21 \
4545 -o "$gcc_cv_gld_major_version" -gt 2; then
4546 gcc_cv_ld_mips_personality_relaxation=yes
4548 elif test x$gcc_cv_as != x \
4549 -a x$gcc_cv_ld != x \
4550 -a x$gcc_cv_readelf != x ; then
4551 cat > conftest.s <<EOF
4553 .cfi_personality 0x80,indirect_ptr
4560 .section .data,"aw",@progbits
4564 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4565 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4566 if $gcc_cv_readelf -d conftest 2>&1 \
4567 | grep TEXTREL > /dev/null 2>&1; then
4569 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4570 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4573 gcc_cv_ld_mips_personality_relaxation=yes
4577 rm -f conftest.s conftest.o conftest])
4578 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4579 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4580 [Define if your linker can relax absolute .eh_frame personality
4581 pointers into PC-relative form.])
4584 gcc_GAS_CHECK_FEATURE([-mnan= support],
4585 gcc_cv_as_mips_nan,,
4587 [AC_DEFINE(HAVE_AS_NAN, 1,
4588 [Define if the assembler understands -mnan=.])])
4589 if test x$gcc_cv_as_mips_nan = xno \
4590 && test x$with_nan != x; then
4592 [Requesting --with-nan= requires assembler support for -mnan=])
4596 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4597 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4598 [.gnu_attribute 8,1],,
4599 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4600 [Define if your assembler supports .gnu_attribute.])])
4601 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4602 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4607 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4608 [Define if your assembler supports .machine and .machinemode.])])
4609 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4610 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4611 [ .machine z13+vx ],,
4612 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4613 [Define if your assembler supports architecture modifiers.])])
4617 # Mips and HP-UX need the GNU assembler.
4618 # Linux on IA64 might be able to use the Intel assembler.
4621 mips*-*-* | *-*-hpux* )
4622 if test x$gas_flag = xyes \
4623 || test x"$host" != x"$build" \
4624 || test ! -x "$gcc_cv_as" \
4625 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4628 echo "*** This configuration requires the GNU assembler" >&2
4634 # ??? Not all targets support dwarf2 debug_line, even within a version
4635 # of gas. Moreover, we need to emit a valid instruction to trigger any
4636 # info to the output file. So, as supported targets are added to gas 2.11,
4637 # add some instruction here to (also) show we expect this might work.
4638 # ??? Once 2.11 is released, probably need to add first known working
4639 # version to the per-target configury.
4641 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4642 | mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
4643 | visium | xstormy16 | xtensa)
4653 if test x"$insn" != x; then
4655 .file 1 \"conftest.s\"
4658 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4659 gcc_cv_as_dwarf2_debug_line,
4660 [elf,2,11,0],, [$conftest_s],
4661 [if test x$gcc_cv_objdump != x \
4662 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4663 | grep debug_line > /dev/null 2>&1; then
4664 gcc_cv_as_dwarf2_debug_line=yes
4667 # The .debug_line file table must be in the exact order that
4668 # we specified the files, since these indices are also used
4669 # by DW_AT_decl_file. Approximate this test by testing if
4670 # the assembler bitches if the same index is assigned twice.
4671 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4672 gcc_cv_as_dwarf2_file_buggy,,,
4676 if test $gcc_cv_as_dwarf2_debug_line = yes \
4677 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4678 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4679 [Define if your assembler supports dwarf2 .file/.loc directives,
4680 and preserves file table indices exactly as given.])
4683 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4684 gcc_cv_as_gdwarf2_flag,
4685 [elf,2,11,0], [--gdwarf2], [$insn],,
4686 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4687 [Define if your assembler supports the --gdwarf2 option.])])
4689 gcc_GAS_CHECK_FEATURE([--gstabs option],
4690 gcc_cv_as_gstabs_flag,
4691 [elf,2,11,0], [--gstabs], [$insn],,
4692 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4693 [Define if your assembler supports the --gstabs option.])])
4695 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4696 gcc_cv_as_debug_prefix_map_flag,
4697 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4698 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4699 [Define if your assembler supports the --debug-prefix-map option.])])
4702 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4703 gcc_cv_as_compress_debug,,[--compress-debug-sections],,
4704 [# gas compiled without zlib cannot compress debug sections and warns
4705 # about it, but still exits successfully. So check for this, too.
4706 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4708 gcc_cv_as_compress_debug=0
4709 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4711 gcc_cv_as_compress_debug=1
4712 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4713 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4715 gcc_cv_as_compress_debug=0
4716 # FIXME: Future gas versions will support ELF gABI style via
4717 # --compress-debug-sections[=type].
4719 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4720 [Define to the level of your assembler's compressed debug section support.])
4721 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4722 [Define to the assembler option to enable compressed debug sections.])
4723 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4724 [Define to the assembler option to disable compressed debug sections.])
4726 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4729 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4730 [Define if your assembler supports .lcomm with an alignment field.])])
4732 if test x$with_sysroot = x && test x$host = x$target \
4733 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4734 && test "$prefix" != "NONE"; then
4735 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4736 [Define to PREFIX/include if cpp should also search that directory.])
4739 # Determine the version of glibc, if any, used on the target.
4740 AC_MSG_CHECKING([for target glibc version])
4741 AC_ARG_WITH([glibc-version],
4742 [AS_HELP_STRING([--with-glibc-version=M.N],
4743 [assume GCC used with glibc version M.N or later])], [
4744 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4745 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4746 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4748 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4750 glibc_version_major=0
4751 glibc_version_minor=0
4752 [if test -f $target_header_dir/features.h \
4753 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4754 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4755 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4756 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4758 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4759 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
4760 [GNU C Library major version number used on the target, or 0.])
4761 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
4762 [GNU C Library minor version number used on the target, or 0.])
4764 AC_ARG_ENABLE(gnu-unique-object,
4765 [AS_HELP_STRING([--enable-gnu-unique-object],
4766 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4767 [case $enable_gnu_unique_object in
4769 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4770 Valid choices are 'yes' and 'no'.]) ;;
4772 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4774 [.type foo, '$target_type_format_char'gnu_unique_object],,
4775 # We need to unquote above to to use the definition from config.gcc.
4776 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4777 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4779 if test x$enable_gnu_unique_object = xyes; then
4780 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4781 [Define if your assembler supports @gnu_unique_object.])
4784 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4785 [gcc_cv_as_line_zero],
4786 [gcc_cv_as_line_zero=no
4787 if test $in_tree_gas = yes; then
4788 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4789 elif test "x$gcc_cv_as" != x; then
4790 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4791 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4792 test "x`cat conftest.out`" = x
4794 gcc_cv_as_line_zero=yes
4796 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4797 cat conftest.s >&AS_MESSAGE_LOG_FD
4798 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4799 cat conftest.out >&AS_MESSAGE_LOG_FD
4801 rm -f conftest.o conftest.s conftest.out
4803 if test "x$gcc_cv_as_line_zero" = xyes; then
4804 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4805 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4808 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4809 gcc_cv_ld_eh_frame_hdr=no
4810 if test $in_tree_ld = yes ; then
4811 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4812 && test $in_tree_ld_is_elf = yes; then
4813 gcc_cv_ld_eh_frame_hdr=yes
4815 elif test x$gcc_cv_ld != x; then
4816 if echo "$ld_ver" | grep GNU > /dev/null; then
4817 # Check if linker supports --eh-frame-hdr option
4818 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4819 gcc_cv_ld_eh_frame_hdr=yes
4824 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4825 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4826 gcc_cv_ld_eh_frame_hdr=yes
4832 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4833 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4834 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4835 [Define if your linker supports .eh_frame_hdr.])
4837 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4839 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4840 gcc_cv_ld_eh_frame_ciev3=no
4841 if test $in_tree_ld = yes ; then
4842 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4843 && test $in_tree_ld_is_elf = yes; then
4844 gcc_cv_ld_eh_frame_ciev3=yes
4846 elif test x$gcc_cv_ld != x; then
4847 if echo "$ld_ver" | grep GNU > /dev/null; then
4848 gcc_cv_ld_eh_frame_ciev3=yes
4849 if test 0"$ld_date" -lt 20040513; then
4850 if test -n "$ld_date"; then
4851 # If there was date string, but was earlier than 2004-05-13, fail
4852 gcc_cv_ld_eh_frame_ciev3=no
4853 elif test "$ld_vers_major" -lt 2; then
4854 gcc_cv_ld_eh_frame_ciev3=no
4855 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4856 gcc_cv_ld_eh_frame_ciev3=no
4862 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4863 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4864 gcc_cv_ld_eh_frame_ciev3=yes
4870 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4871 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4872 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4873 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4875 AC_MSG_CHECKING(linker position independent executable support)
4877 if test $in_tree_ld = yes ; then
4879 # Full PIE support on Solaris was only introduced in gld 2.26.
4880 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
4881 *) gcc_gld_pie_min_version=15 ;;
4883 if test "$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 \
4884 && test $in_tree_ld_is_elf = yes; then
4887 elif test x$gcc_cv_ld != x; then
4888 # Check if linker supports -pie option
4889 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4893 if echo "$ld_ver" | grep GNU > /dev/null \
4894 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
4901 *-*-solaris2.1[[1-9]]*)
4902 # Solaris 11.x and Solaris 12 added PIE support.
4903 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
4910 if test x"$gcc_cv_ld_pie" = xyes; then
4911 AC_DEFINE(HAVE_LD_PIE, 1,
4912 [Define if your linker supports PIE option.])
4914 AC_MSG_RESULT($gcc_cv_ld_pie)
4916 AC_MSG_CHECKING(linker PIE support with copy reloc)
4917 gcc_cv_ld_pie_copyreloc=no
4918 if test $gcc_cv_ld_pie = yes ; then
4919 if test $in_tree_ld = yes ; then
4920 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
4921 gcc_cv_ld_pie_copyreloc=yes
4923 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4924 # Check if linker supports -pie option with copy reloc
4926 i?86-*-linux* | x86_64-*-linux*)
4927 cat > conftest1.s <<EOF
4930 .type a_glob, @object
4935 cat > conftest2.s <<EOF
4938 .type main, @function
4940 movl %eax, a_glob(%rip)
4943 .section .data.rel,"aw",@progbits
4948 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4949 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
4950 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4951 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
4952 gcc_cv_ld_pie_copyreloc=yes
4954 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
4959 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
4960 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
4961 [Define 0/1 if your linker supports -pie option with copy reloc.])
4962 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
4964 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4965 gcc_cv_ld_eh_gc_sections=no
4966 if test $in_tree_ld = yes ; then
4967 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4968 && test $in_tree_ld_is_elf = yes; then
4969 gcc_cv_ld_eh_gc_sections=yes
4971 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4972 cat > conftest.s <<EOF
4975 .type _start, @function
4978 .size _start, .-_start
4979 .section .text.foo,"ax",@progbits
4980 .type foo, @function
4984 .section .gcc_except_table.foo,"a",@progbits
4987 .section .eh_frame,"a",@progbits
4990 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4991 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4992 | grep "gc-sections option ignored" > /dev/null; then
4993 gcc_cv_ld_eh_gc_sections=no
4994 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4995 | grep gcc_except_table > /dev/null; then
4996 gcc_cv_ld_eh_gc_sections=yes
4997 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4998 if test x$gcc_cv_as_comdat_group != xyes; then
4999 gcc_cv_ld_eh_gc_sections=no
5000 cat > conftest.s <<EOF
5003 .type _start, @function
5006 .size _start, .-_start
5007 .section .gnu.linkonce.t.foo,"ax",@progbits
5008 .type foo, @function
5012 .section .gcc_except_table.foo,"a",@progbits
5015 .section .eh_frame,"a",@progbits
5018 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5019 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5020 | grep "gc-sections option ignored" > /dev/null; then
5021 gcc_cv_ld_eh_gc_sections=no
5022 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5023 | grep gcc_except_table > /dev/null; then
5024 gcc_cv_ld_eh_gc_sections=yes
5030 rm -f conftest.s conftest.o conftest
5034 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5035 gcc_cv_ld_eh_gc_sections=no
5038 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5039 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5040 [Define if your linker supports garbage collection of
5041 sections in presence of EH frames.])
5043 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5045 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5046 gcc_cv_ld_eh_gc_sections_bug=no
5047 if test $in_tree_ld = yes ; then
5048 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5049 && test $in_tree_ld_is_elf = yes; then
5050 gcc_cv_ld_eh_gc_sections_bug=yes
5052 elif test x$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
5053 gcc_cv_ld_eh_gc_sections_bug=yes
5054 cat > conftest.s <<EOF
5057 .type _start, @function
5060 .size _start, .-_start
5061 .section .text.startup.foo,"ax",@progbits
5062 .type foo, @function
5066 .section .gcc_except_table.foo,"a",@progbits
5069 .section .eh_frame,"a",@progbits
5072 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5073 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5074 | grep "gc-sections option ignored" > /dev/null; then
5076 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5077 | grep gcc_except_table > /dev/null; then
5078 gcc_cv_ld_eh_gc_sections_bug=no
5081 rm -f conftest.s conftest.o conftest
5083 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5084 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5085 [Define if your linker has buggy garbage collection of
5086 sections support when .text.startup.foo like sections are used.])
5088 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5090 AC_MSG_CHECKING(linker for compressed debug sections)
5091 # gold/gld support compressed debug sections since binutils 2.19/2.21
5092 if test $in_tree_ld = yes ; then
5093 gcc_cv_ld_compress_debug=0
5094 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5095 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5096 gcc_cv_ld_compress_debug=2
5097 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5098 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5099 && test $in_tree_ld_is_elf = yes; then
5100 gcc_cv_ld_compress_debug=1
5102 elif echo "$ld_ver" | grep GNU > /dev/null; then
5103 gcc_cv_ld_compress_debug=1
5104 if test 0"$ld_date" -lt 20050308; then
5105 if test -n "$ld_date"; then
5106 # If there was date string, but was earlier than 2005-03-08, fail
5107 gcc_cv_ld_compress_debug=0
5108 elif test "$ld_vers_major" -lt 2; then
5109 gcc_cv_ld_compress_debug=0
5110 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5111 gcc_cv_ld_compress_debug=0
5114 if test $ld_is_gold = yes; then
5115 gcc_cv_ld_compress_debug=2
5116 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5122 # Introduced in Solaris 11.2.
5123 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5124 gcc_cv_ld_compress_debug=3
5125 gcc_cv_ld_compress_debug_option="-z compress-sections"
5127 gcc_cv_ld_compress_debug=0
5131 # Assume linkers other than GNU ld don't support compessed debug
5133 gcc_cv_ld_compress_debug=0
5138 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5139 [Define to the level of your linker's compressed debug section support.])
5140 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5141 [Define to the linker option to enable compressed debug sections.])
5142 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5148 AC_CACHE_CHECK(linker --as-needed support,
5149 gcc_cv_ld_as_needed,
5150 [gcc_cv_ld_as_needed=no
5151 gcc_cv_ld_as_needed_option='--as-needed'
5152 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5153 if test $in_tree_ld = yes ; then
5154 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5155 && test $in_tree_ld_is_elf = yes; then
5156 gcc_cv_ld_as_needed=yes
5158 elif test x$gcc_cv_ld != x; then
5159 # Check if linker supports --as-needed and --no-as-needed options
5160 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
5161 gcc_cv_ld_as_needed=yes
5164 # Solaris 2 ld always supports -z ignore/-z record.
5166 gcc_cv_ld_as_needed=yes
5167 gcc_cv_ld_as_needed_option="-z ignore"
5168 gcc_cv_ld_no_as_needed_option="-z record"
5173 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5174 # dl_iterate_phdr, i.e. since Solaris 11.
5176 *-*-solaris2.1[[1-9]]*)
5178 i?86-*-* | x86_64-*-*)
5179 if echo "$ld_ver" | grep GNU > /dev/null; then
5180 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5181 gcc_cv_ld_as_needed=no
5187 gcc_cv_ld_as_needed=no
5191 if test x"$gcc_cv_ld_as_needed" = xyes; then
5192 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5193 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5194 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5195 [Define to the linker option to ignore unused dependencies.])
5196 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5197 [Define to the linker option to keep unused dependencies.])
5200 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5201 saved_LDFLAGS="$LDFLAGS"
5202 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5203 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5204 AC_LINK_IFELSE([int main(void) {return 0;}],
5205 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5207 LDFLAGS="$saved_LDFLAGS"
5208 if test "x$gcc_cv_ld_clearcap" = xyes; then
5209 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5210 [Define if the linker supports clearing hardware capabilities via mapfile.])
5211 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5213 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5215 case "$target:$tm_file" in
5216 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5219 emul_name="-melf64lppc"
5222 emul_name="-melf64ppc"
5225 emul_name="-melf64ppc_fbsd"
5228 AC_CACHE_CHECK(linker support for omitting dot symbols,
5229 gcc_cv_ld_no_dot_syms,
5230 [gcc_cv_ld_no_dot_syms=no
5231 if test x"$ld_is_gold" = xyes; then
5232 gcc_cv_ld_no_dot_syms=yes
5233 elif test $in_tree_ld = yes ; then
5234 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5235 gcc_cv_ld_no_dot_syms=yes
5237 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5238 cat > conftest1.s <<EOF
5242 cat > conftest2.s <<EOF
5243 .section ".opd","aw"
5248 .quad .LEfoo,.TOC.@tocbase,0
5254 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5255 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5256 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5257 gcc_cv_ld_no_dot_syms=yes
5259 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5262 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5263 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5264 [Define if your PowerPC64 linker only needs function descriptor syms.])
5267 AC_CACHE_CHECK(linker large toc support,
5268 gcc_cv_ld_large_toc,
5269 [gcc_cv_ld_large_toc=no
5270 if test x"$ld_is_gold" = xyes; then
5271 gcc_cv_ld_large_toc=yes
5272 elif test $in_tree_ld = yes ; then
5273 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5274 gcc_cv_ld_large_toc=yes
5276 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5277 cat > conftest.s <<EOF
5278 .section ".tbss","awT",@nobits
5284 addis 9,13,ie0@got@tprel@ha
5285 ld 9,ie0@got@tprel@l(9)
5287 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5288 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5289 gcc_cv_ld_large_toc=yes
5291 rm -f conftest conftest.o conftest.s
5294 if test x"$gcc_cv_ld_large_toc" = xyes; then
5295 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5296 [Define if your PowerPC64 linker supports a large TOC.])
5299 AC_CACHE_CHECK(linker toc pointer alignment,
5300 gcc_cv_ld_toc_align,
5301 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5302 cat > conftest.s <<EOF
5307 .section .data.rel.ro,"aw",@progbits
5312 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5313 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5314 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5316 rm -f conftest conftest.o conftest.s
5319 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5320 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5321 [Define to .TOC. alignment forced by your linker.])
5328 AC_CACHE_CHECK(linker large toc support,
5329 gcc_cv_ld_large_toc,
5330 [gcc_cv_ld_large_toc=no
5331 if test x$gcc_cv_as != x ; then
5332 cat > conftest.s <<EOF
5342 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5343 gcc_cv_ld_large_toc=yes
5345 rm -f conftest conftest.o conftest.s
5348 if test x"$gcc_cv_ld_large_toc" = xyes; then
5349 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5350 [Define if your PowerPC64 linker supports a large TOC.])
5355 AC_CACHE_CHECK(linker --build-id support,
5357 [gcc_cv_ld_buildid=no
5358 if test $in_tree_ld = yes ; then
5359 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5360 "$gcc_cv_gld_minor_version" -ge 18 -o \
5361 "$gcc_cv_gld_major_version" -gt 2 \
5362 && test $in_tree_ld_is_elf = yes; then
5363 gcc_cv_ld_buildid=yes
5365 elif test x$gcc_cv_ld != x; then
5366 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
5367 gcc_cv_ld_buildid=yes
5370 if test x"$gcc_cv_ld_buildid" = xyes; then
5371 AC_DEFINE(HAVE_LD_BUILDID, 1,
5372 [Define if your linker supports --build-id.])
5375 AC_ARG_ENABLE(linker-build-id,
5376 [AS_HELP_STRING([--enable-linker-build-id],
5377 [compiler will always pass --build-id to linker])],
5379 enable_linker_build_id=no)
5381 if test x"$enable_linker_build_id" = xyes; then
5382 if test x"$gcc_cv_ld_buildid" = xyes; then
5383 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5384 [Define if gcc should always pass --build-id to linker.])
5386 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5390 # In binutils 2.21, GNU ld gained support for new emulations fully
5391 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5392 AC_CACHE_CHECK(linker *_sol2 emulation support,
5393 gcc_cv_ld_sol2_emulation,
5394 [gcc_cv_ld_sol2_emulation=no
5395 if test $in_tree_ld = yes ; then
5396 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5397 "$gcc_cv_gld_minor_version" -ge 21 -o \
5398 "$gcc_cv_gld_major_version" -gt 2 \
5399 && test $in_tree_ld_is_elf = yes; then
5400 gcc_cv_ld_sol2_emulation=yes
5402 elif test x$gcc_cv_ld != x; then
5403 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5404 grep _sol2 > /dev/null; then
5405 gcc_cv_ld_sol2_emulation=yes
5408 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5409 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5410 [Define if your linker supports the *_sol2 emulations.])
5413 AC_CACHE_CHECK(linker --sysroot support,
5415 [gcc_cv_ld_sysroot=no
5416 if test $in_tree_ld = yes ; then
5417 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5418 gcc_cv_ld_sysroot=yes
5420 elif test x$gcc_cv_ld != x; then
5421 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
5422 gcc_cv_ld_sysroot=yes
5425 if test x"$gcc_cv_ld_sysroot" = xyes; then
5426 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5427 [Define if your linker supports --sysroot.])
5432 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5433 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5434 gcc_cv_solaris_crts,
5435 [gcc_cv_solaris_crts=no
5436 if test x$host != x$target; then
5437 if test "x$with_sysroot" = xyes; then
5438 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5440 target_sysroot="${with_sysroot}"
5443 target_libdir="$target_sysroot/usr/lib"
5444 # At the time they were added, gcrt1.o became a symlink for backwards
5445 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5447 i?86-*-solaris2* | x86_64-*-solaris2*)
5448 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5451 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5456 if test x$gcc_cv_solaris_crts = xyes; then
5457 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5458 [Define if the system-provided CRTs are present on Solaris.])
5461 # Test for stack protector support in target C library.
5462 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5463 gcc_cv_libc_provides_ssp,
5464 [gcc_cv_libc_provides_ssp=no
5467 # All versions of musl provide stack protector
5468 gcc_cv_libc_provides_ssp=yes;;
5469 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
5470 # glibc 2.4 and later provides __stack_chk_fail and
5471 # either __stack_chk_guard, or TLS access to stack guard canary.
5472 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5473 [if test -f $target_header_dir/features.h \
5474 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5475 $target_header_dir/features.h > /dev/null; then
5476 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5477 $target_header_dir/features.h > /dev/null && \
5478 test -f $target_header_dir/bits/uClibc_config.h && \
5479 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5480 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5481 gcc_cv_libc_provides_ssp=yes
5483 # all versions of Bionic support stack protector
5484 elif test -f $target_header_dir/sys/cdefs.h \
5485 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5486 $target_header_dir/sys/cdefs.h > /dev/null; then
5487 gcc_cv_libc_provides_ssp=yes
5491 # Avoid complicated tests (see
5492 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5493 # simply assert that glibc does provide this, which is true for all
5494 # realistically usable GNU/Hurd configurations.
5495 # All supported versions of musl provide it as well
5496 gcc_cv_libc_provides_ssp=yes;;
5497 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
5498 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5499 [echo "no __stack_chk_fail on this target"])
5501 *) gcc_cv_libc_provides_ssp=no ;;
5504 if test x$gcc_cv_libc_provides_ssp = xyes; then
5505 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5506 [Define if your target C library provides stack protector support])
5509 # Check whether --enable-default-ssp was given.
5510 AC_ARG_ENABLE(default-ssp,
5511 [AS_HELP_STRING([--enable-default-ssp],
5512 [enable Stack Smashing Protection as default])],[
5513 if test x$gcc_cv_libc_provides_ssp = xyes; then
5515 ia64*-*-*) enable_default_ssp=no ;;
5516 *) enable_default_ssp=$enableval ;;
5519 enable_default_ssp=no
5521 enable_default_ssp=no)
5522 if test x$enable_default_ssp = xyes ; then
5523 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5524 [Define if your target supports default stack protector and it is enabled.])
5526 AC_SUBST([enable_default_ssp])
5528 # Test for <sys/sdt.h> on the target.
5529 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5530 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5532 if test -f $target_header_dir/sys/sdt.h; then
5534 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5535 [Define if your target C library provides sys/sdt.h])
5537 AC_MSG_RESULT($have_sys_sdt_h)
5539 # Check if TFmode long double should be used by default or not.
5540 # Some glibc targets used DFmode long double, but with glibc 2.4
5541 # and later they can use TFmode.
5543 powerpc*-*-linux* | \
5547 AC_ARG_WITH(long-double-128,
5548 [AS_HELP_STRING([--with-long-double-128],
5549 [use 128-bit long double by default])],
5550 gcc_cv_target_ldbl128="$with_long_double_128",
5551 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5552 [gcc_cv_target_ldbl128=no
5553 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5554 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5555 && gcc_cv_target_ldbl128=yes
5559 if test x$gcc_cv_target_ldbl128 = xyes; then
5560 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5561 [Define if TFmode long double should be the default])
5564 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
5565 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
5566 gcc_cv_libc_provides_hwcap_in_tcb=no
5569 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
5572 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
5573 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
5574 [Define if your target C Library provides the AT_HWCAP value in the TCB])
5577 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5578 gcc_cv_target_dl_iterate_phdr=unknown
5580 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5581 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5582 # libdl there, both complicating its use and breaking compatibility
5583 # between Solaris 10 updates.
5584 *-*-solaris2.1[[1-9]]*)
5585 # <link.h> needs both a dl_iterate_phdr declaration and support for
5586 # compilation with largefile support.
5587 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5588 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5589 gcc_cv_target_dl_iterate_phdr=yes
5591 gcc_cv_target_dl_iterate_phdr=no
5594 *-*-dragonfly* | *-*-freebsd*)
5595 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5596 gcc_cv_target_dl_iterate_phdr=yes
5598 gcc_cv_target_dl_iterate_phdr=no
5602 gcc_cv_target_dl_iterate_phdr=yes
5605 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5606 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5607 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5608 [Define if your target C library provides the `dl_iterate_phdr' function.])
5610 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5612 # We no longer support different GC mechanisms. Emit an error if
5613 # the user configures with --with-gc.
5615 [AS_HELP_STRING([--with-gc={page,zone}],
5616 [this option is not supported anymore. It used to choose
5617 the garbage collection mechanism to use with the compiler])],
5618 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5621 # Libraries to use on the host. This will normally be set by the top
5622 # level Makefile. Here we simply capture the value for our Makefile.
5623 if test -z "${HOST_LIBS+set}"; then
5628 # Use the system's zlib library.
5631 dnl Very limited version of automake's enable-maintainer-mode
5633 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5634 dnl maintainer-mode is disabled by default
5635 AC_ARG_ENABLE(maintainer-mode,
5636 [AS_HELP_STRING([--enable-maintainer-mode],
5637 [enable make rules and dependencies not useful
5638 (and sometimes confusing) to the casual installer])],
5639 maintainer_mode=$enableval,
5642 AC_MSG_RESULT($maintainer_mode)
5644 if test "$maintainer_mode" = "yes"; then
5651 dnl Whether to prevent multiple front-ends from linking at the same time
5653 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5654 AC_ARG_ENABLE(link-mutex,
5655 [AS_HELP_STRING([--enable-link-mutex],
5656 [avoid linking multiple front-ends at once to avoid thrashing
5657 on the build machine])],
5658 do_link_mutex=$enableval,
5660 AC_MSG_RESULT($do_link_mutex)
5662 if test "$do_link_mutex" = "yes"; then
5667 AC_SUBST(DO_LINK_MUTEX)
5673 # Make empty files to contain the specs and options for each language.
5674 # Then add #include lines to for a compiler that has specs and/or options.
5680 # These (without "all_") are set in each config-lang.in.
5681 # `language' must be a single word so is spelled singularly.
5684 all_outputs='Makefile'
5685 # List of language makefile fragments.
5687 # Additional files for gengtype
5688 all_gtfiles="$target_gtfiles"
5690 # These are the languages that are set in --enable-languages,
5691 # and are available in the GCC tree.
5692 all_selected_languages=
5694 # Add the language fragments.
5695 # Languages are added via two mechanisms. Some information must be
5696 # recorded in makefile variables, these are defined in config-lang.in.
5697 # We accumulate them and plug them into the main Makefile.
5698 # The other mechanism is a set of hooks for each of the main targets
5699 # like `clean', `install', etc.
5701 language_hooks="Make-hooks"
5703 for lang in ${srcdir}/*/config-lang.in
5706 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5708 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5709 if test "x$lang_alias" = x
5711 echo "$lang doesn't set \$language." 1>&2
5714 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5715 subdirs="$subdirs $subdir"
5717 # $gcc_subdir is where the gcc integration files are to be found
5718 # for a language, both for internal compiler purposes (compiler
5719 # sources implementing front-end to GCC tree converters), and for
5720 # build infrastructure purposes (Make-lang.in, etc.)
5722 # This will be <subdir> (relative to $srcdir) if a line like
5723 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5724 # is found in <langdir>/config-lang.in, and will remain <langdir>
5727 # Except for the language alias (fetched above), the regular
5728 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5729 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5730 # only this and the language alias.
5732 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5733 if [ "$gcc_subdir" = "" ]; then
5734 gcc_subdir="$subdir"
5737 case ",$enable_languages," in
5739 all_selected_languages="$all_selected_languages $lang_alias"
5740 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5741 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5753 . ${srcdir}/$gcc_subdir/config-lang.in
5754 if test "x$language" = x
5756 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5761 case ",$enable_languages," in
5764 for i in $subdir_requires; do
5765 test -f "${srcdir}/$i/config-lang.in" && continue
5773 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5774 if test -f $srcdir/$gcc_subdir/lang.opt; then
5775 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5776 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5778 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5779 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5781 all_languages="$all_languages $language"
5782 all_compilers="$all_compilers $compilers"
5783 all_outputs="$all_outputs $outputs"
5784 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5785 case ",$enable_languages," in
5787 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5789 AC_SUBST(enable_lto)
5796 for language in $all_selected_languages
5798 check_languages="$check_languages check-$language"
5801 # We link each language in with a set of hooks, reached indirectly via
5802 # lang.${target}. Only do so for selected languages.
5806 target_list="all.cross start.encap rest.encap tags \
5807 install-common install-man install-info install-pdf install-html dvi \
5808 pdf html uninstall info man srcextra srcman srcinfo \
5809 mostlyclean clean distclean maintainer-clean install-plugin"
5811 for t in $target_list
5814 for lang in $all_selected_languages
5818 echo "lang.$t: $x" >> Make-hooks
5822 # Option include files
5825 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5826 option_includes="option-includes.mk"
5827 AC_SUBST_FILE(option_includes)
5835 echo "dir ." > .gdbinit
5836 echo "dir ${srcdir}" >> .gdbinit
5837 if test x$gdb_needs_out_file_path = xyes
5839 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5841 if test "x$subdirs" != x; then
5844 echo "dir ${srcdir}/$s" >> .gdbinit
5847 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5848 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
5850 # Put a breakpoint on __asan_report_error to help with debugging buffer
5853 *-fsanitize=address*)
5854 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
5858 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5859 AC_SUBST(gcc_tooldir)
5862 # Find a directory in which to install a shared libgcc.
5864 AC_ARG_ENABLE(version-specific-runtime-libs,
5865 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5866 [specify that runtime libraries should be
5867 installed in a compiler-specific directory])])
5869 # Substitute configuration variables
5872 AC_SUBST(all_compilers)
5873 AC_SUBST(all_gtfiles)
5874 AC_SUBST(all_lang_makefrags)
5875 AC_SUBST(all_languages)
5876 AC_SUBST(all_selected_languages)
5877 AC_SUBST(build_exeext)
5878 AC_SUBST(build_install_headers_dir)
5879 AC_SUBST(build_xm_file_list)
5880 AC_SUBST(build_xm_include_list)
5881 AC_SUBST(build_xm_defines)
5882 AC_SUBST(build_file_translate)
5883 AC_SUBST(check_languages)
5884 AC_SUBST(cpp_install_dir)
5885 AC_SUBST(xmake_file)
5886 AC_SUBST(tmake_file)
5887 AC_SUBST(TM_ENDIAN_CONFIG)
5888 AC_SUBST(TM_MULTILIB_CONFIG)
5889 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5890 AC_SUBST(extra_gcc_objs)
5891 AC_SUBST(user_headers_inc_next_pre)
5892 AC_SUBST(user_headers_inc_next_post)
5893 AC_SUBST(extra_headers_list)
5894 AC_SUBST(extra_objs)
5895 AC_SUBST(extra_programs)
5896 AC_SUBST(float_h_file)
5897 AC_SUBST(gcc_config_arguments)
5898 AC_SUBST(gcc_gxx_include_dir)
5899 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5900 AC_SUBST(host_exeext)
5901 AC_SUBST(host_xm_file_list)
5902 AC_SUBST(host_xm_include_list)
5903 AC_SUBST(host_xm_defines)
5904 AC_SUBST(out_host_hook_obj)
5906 AC_SUBST(lang_opt_files)
5907 AC_SUBST(lang_specs_files)
5908 AC_SUBST(lang_tree_files)
5909 AC_SUBST(local_prefix)
5911 AC_SUBST(objc_boehm_gc)
5913 AC_SUBST(out_object_file)
5914 AC_SUBST(common_out_file)
5915 AC_SUBST(common_out_object_file)
5916 AC_SUBST(tm_file_list)
5917 AC_SUBST(tm_include_list)
5918 AC_SUBST(tm_defines)
5919 AC_SUBST(tm_p_file_list)
5920 AC_SUBST(tm_p_include_list)
5921 AC_SUBST(xm_file_list)
5922 AC_SUBST(xm_include_list)
5923 AC_SUBST(xm_defines)
5924 AC_SUBST(use_gcc_stdint)
5925 AC_SUBST(c_target_objs)
5926 AC_SUBST(cxx_target_objs)
5927 AC_SUBST(fortran_target_objs)
5928 AC_SUBST(target_cpu_default)
5930 AC_SUBST_FILE(language_hooks)
5933 if test x${build} = x${host} ; then
5934 if test x${host} = x${target} ; then
5935 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5937 echo "Links are now set up to build a cross-compiler" 1>&2
5938 echo " from ${host} to ${target}." 1>&2
5941 if test x${host} = x${target} ; then
5942 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5943 echo " for ${target}." 1>&2
5945 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5946 echo " from ${host} to ${target}." 1>&2
5950 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5951 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5953 AC_ARG_VAR(ISLLIBS,[How to link isl])
5954 AC_ARG_VAR(ISLINC,[How to find isl include files])
5955 if test "x${ISLLIBS}" != "x" ; then
5956 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
5959 # Check whether isl_options_set_schedule_serialize_sccs is available;
5960 # it's new in isl 0.15.
5961 if test "x${ISLLIBS}" != "x" ; then
5962 saved_CXXFLAGS="$CXXFLAGS"
5963 CXXFLAGS="$CXXFLAGS $ISLINC $GMPINC"
5965 LIBS="$LIBS $ISLLIBS $GMPLIBS"
5967 AC_MSG_CHECKING([Checking for isl_options_set_schedule_serialize_sccs])
5968 AC_TRY_LINK([#include <isl/schedule.h>],
5969 [isl_options_set_schedule_serialize_sccs (NULL, 0);],
5970 [ac_has_isl_options_set_schedule_serialize_sccs=yes],
5971 [ac_has_isl_options_set_schedule_serialize_sccs=no])
5972 AC_MSG_RESULT($ac_has_isl_options_set_schedule_serialize_sccs)
5975 CXXFLAGS="$saved_CXXFLAGS"
5977 if test x"$ac_has_isl_options_set_schedule_serialize_sccs" = x"yes"; then
5978 AC_DEFINE(HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS, 1,
5979 [Define if isl_options_set_schedule_serialize_sccs exists.])
5984 AC_SUBST(pluginlibs)
5985 AC_SUBST(enable_plugin)
5986 if test x"$enable_plugin" = x"yes"; then
5987 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5991 # Enable --enable-host-shared
5992 AC_ARG_ENABLE(host-shared,
5993 [AS_HELP_STRING([--enable-host-shared],
5994 [build host code as shared libraries])],
5995 [PICFLAG=-fPIC], [PICFLAG=])
5996 AC_SUBST(enable_host_shared)
6000 AC_ARG_ENABLE(libquadmath-support,
6001 [AS_HELP_STRING([--disable-libquadmath-support],
6002 [disable libquadmath support for Fortran])],
6003 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6004 ENABLE_LIBQUADMATH_SUPPORT=yes)
6005 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6006 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6007 [Define to 1 to enable libquadmath support])
6011 # Specify what hash style to use by default.
6012 AC_ARG_WITH([linker-hash-style],
6013 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6014 [specify the linker hash style])],
6015 [case x"$withval" in
6017 LINKER_HASH_STYLE=sysv
6020 LINKER_HASH_STYLE=gnu
6023 LINKER_HASH_STYLE=both
6026 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6029 [LINKER_HASH_STYLE=''])
6030 if test x"${LINKER_HASH_STYLE}" != x; then
6031 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6032 [The linker hash style])
6035 # Specify what should be the default of -fdiagnostics-color option.
6036 AC_ARG_WITH([diagnostics-color],
6037 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6038 [specify the default of -fdiagnostics-color option
6039 auto-if-env stands for -fdiagnostics-color=auto if
6040 GCC_COLOR environment variable is present and
6041 -fdiagnostics-color=never otherwise])],
6042 [case x"$withval" in
6044 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6047 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6050 DIAGNOSTICS_COLOR_DEFAULT=-1
6053 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6056 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6059 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6060 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6061 [The default for -fdiagnostics-color option])
6063 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6064 # of jit/jit-playback.c.
6065 cat > gcc-driver-name.h <<EOF
6066 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
6069 # Check whether --enable-default-pie was given.
6070 AC_ARG_ENABLE(default-pie,
6071 [AS_HELP_STRING([--enable-default-pie],
6072 [enable Position Independent Executable as default])],
6073 enable_default_pie=$enableval,
6074 enable_default_pie=no)
6075 if test x$enable_default_pie = xyes ; then
6076 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6077 [Define if your target supports default PIE and it is enabled.])
6079 AC_SUBST([enable_default_pie])
6081 # Check if -fno-PIE works.
6082 AC_CACHE_CHECK([for -fno-PIE option],
6084 [saved_CXXFLAGS="$CXXFLAGS"
6085 CXXFLAGS="$CXXFLAGS -fno-PIE"
6086 AC_COMPILE_IFELSE([int main(void) {return 0;}],
6087 [gcc_cv_c_no_fpie=yes],
6088 [gcc_cv_c_no_fpie=no])
6089 CXXFLAGS="$saved_CXXFLAGS"])
6090 if test "$gcc_cv_c_no_fpie" = "yes"; then
6091 NO_PIE_CFLAGS="-fno-PIE"
6093 AC_SUBST([NO_PIE_CFLAGS])
6095 # Check if -no-pie works.
6096 AC_CACHE_CHECK([for -no-pie option],
6098 [saved_LDFLAGS="$LDFLAGS"
6099 LDFLAGS="$LDFLAGS -no-pie"
6100 AC_LINK_IFELSE([int main(void) {return 0;}],
6101 [gcc_cv_no_pie=yes],
6103 LDFLAGS="$saved_LDFLAGS"])
6104 if test "$gcc_cv_no_pie" = "yes"; then
6105 NO_PIE_FLAG="-no-pie"
6107 AC_SUBST([NO_PIE_FLAG])
6109 # Check linker supports '-z bndplt'
6110 ld_bndplt_support=no
6111 AC_MSG_CHECKING(linker -z bndplt option)
6112 if test x"$ld_is_gold" = xno; then
6113 if test $in_tree_ld = yes ; then
6114 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6115 ld_bndplt_support=yes
6117 elif test x$gcc_cv_ld != x; then
6118 # Check if linker supports -a bndplt option
6119 if $gcc_cv_ld --help 2>/dev/null | grep -- '-z bndplt' > /dev/null; then
6120 ld_bndplt_support=yes
6124 if test x"$ld_bndplt_support" = xyes; then
6125 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6126 [Define if your linker supports -z bndplt])
6128 AC_MSG_RESULT($ld_bndplt_support)
6130 # Configure the subdirectories
6131 # AC_CONFIG_SUBDIRS($subdirs)
6133 # Create the Makefile
6134 # and configure language subdirectories
6135 AC_CONFIG_FILES($all_outputs)
6137 AC_CONFIG_COMMANDS([default],
6139 case ${CONFIG_HEADERS} in
6140 *auto-host.h:config.in*)
6143 # Make sure all the subdirs exist.
6144 for d in $subdirs doc build common c-family
6146 test -d $d || mkdir $d
6149 [subdirs='$subdirs'])