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($29) !tprel'
3087 tls_as_opt=--fatal-warnings
3091 add_s r0,r0, @foo@tpoff'
3095 cris-*-*|crisv32-*-*)
3097 .section ".tdata","awT",@progbits
3104 tls_as_opt=--fatal-warnings
3108 .section ".tdata","awT",@progbits
3120 .section ".tdata","awT",@progbits
3124 addil LT%foo-$tls_gdidx$,gp
3125 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3128 addil LT%foo-$tls_ldidx$,gp
3130 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3131 addil LR%foo-$tls_dtpoff$,%ret0
3132 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3134 addil LT%foo-$tls_ieoff$,gp
3135 ldw RT%foo-$tls_ieoff$(%r1),%t2
3138 addil LR%foo-$tls_leoff$,%t1
3139 ldo RR%foo-$tls_leoff$(%r1),%t2'
3142 tls_as_opt=--fatal-warnings
3146 .section ".tdata","awT",%progbits
3157 i[34567]86-*-* | x86_64-*-*)
3159 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3166 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3168 .section .tdata,"awt",@progbits'
3173 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3174 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3178 .section ".tdata","awT",@progbits'
3182 tls_as_opt="--fatal-warnings"
3186 conftest_s="$conftest_s
3190 leal foo@tlsgd(,%ebx,1), %eax
3191 leal foo@tlsldm(%ebx), %eax
3192 leal foo@dtpoff(%eax), %edx
3193 movl foo@gottpoff(%ebx), %eax
3194 subl foo@gottpoff(%ebx), %eax
3195 addl foo@gotntpoff(%ebx), %eax
3196 movl foo@indntpoff, %eax
3197 movl \$foo@tpoff, %eax
3198 subl \$foo@tpoff, %eax
3199 leal foo@ntpoff(%ecx), %eax"
3202 if test x$on_solaris = xyes; then
3204 yes) tls_as_opt="$tls_as_opt --64" ;;
3205 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3208 conftest_s="$conftest_s
3212 leaq foo@tlsgd(%rip), %rdi
3213 leaq foo@tlsld(%rip), %rdi
3214 leaq foo@dtpoff(%rax), %rdx
3215 movq foo@gottpoff(%rip), %rax
3216 movq \$foo@tpoff, %rax"
3222 .section ".tdata","awT",@progbits
3225 addl r16 = @ltoff(@dtpmod(foo#)), gp
3226 addl r17 = @ltoff(@dtprel(foo#)), gp
3227 addl r18 = @ltoff(@tprel(foo#)), gp
3228 addl r19 = @dtprel(foo#), gp
3229 adds r21 = @dtprel(foo#), r13
3230 movl r23 = @dtprel(foo#)
3231 addl r20 = @tprel(foo#), gp
3232 adds r22 = @tprel(foo#), r13
3233 movl r24 = @tprel(foo#)'
3236 tls_as_opt=--fatal-warnings
3240 .section .tdata,"awT",@progbits
3244 addik r5,r20,x@TLSGD
3245 addik r5,r20,x@TLSLDM'
3248 tls_as_opt='--fatal-warnings'
3252 .section .tdata,"awT",@progbits
3256 addiu $4, $28, %tlsgd(x)
3257 addiu $4, $28, %tlsldm(x)
3258 lui $4, %dtprel_hi(x)
3259 addiu $4, $4, %dtprel_lo(x)
3260 lw $4, %gottprel(x)($28)
3261 lui $4, %tprel_hi(x)
3262 addiu $4, $4, %tprel_lo(x)'
3265 tls_as_opt='-32 --fatal-warnings'
3269 .section .tdata,"awT",@progbits
3274 move.l x@TLSGD(%a5),%a0
3275 move.l x@TLSLDM(%a5),%a0
3276 move.l x@TLSLDO(%a5),%a0
3277 move.l x@TLSIE(%a5),%a0
3278 move.l x@TLSLE(%a5),%a0'
3281 tls_as_opt='--fatal-warnings'
3285 .section ".tdata","awT",@progbits'
3288 tls_as_opt="--fatal-warnings"
3292 .section ".tdata","awT",%progbits
3296 add x0, x0, #:tlsgd_lo12:x
3301 tls_as_opt='--fatal-warnings'
3305 .extern __get_tpointer
3323 .section ".tdata","awT",@progbits
3331 addi 3,2,ld0@got@tlsgd
3337 addi 3,2,x1@got@tlsld
3343 addis 9,3,x2@dtprel@ha
3344 addi 9,9,x2@dtprel@l
3347 ld 9,x3@got@dtprel(2)
3353 tls_as_opt="-a64 --fatal-warnings"
3357 .section ".tdata","awT",@progbits
3365 addi 3,31,ld0@got@tlsgd
3367 addi 3,31,x1@got@tlsld
3370 addis 9,3,x2@dtprel@ha
3371 addi 9,9,x2@dtprel@l
3372 lwz 9,x3@got@tprel(31)
3375 addis 9,2,x2@tprel@ha
3376 addi 9,9,x2@tprel@l'
3379 tls_as_opt="-a32 --fatal-warnings"
3383 .section ".tdata","awT",@progbits
3392 l %r1,foo@GOTNTPOFF(%r12)
3393 l %r1,0(%r1):tls_load:foo
3394 bas %r14,0(%r1,%r13):tls_gdcall:foo
3395 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3398 tls_as_opt="-m31 --fatal-warnings"
3402 .section ".tdata","awT",@progbits
3410 lg %r1,foo@GOTNTPOFF(%r12)
3411 larl %r1,foo@INDNTPOFF
3412 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3413 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3416 tls_as_opt="-m64 -Aesame --fatal-warnings"
3418 sh-*-* | sh[123456789lbe]*-*-*)
3420 .section ".tdata","awT",@progbits
3430 tls_as_opt=--fatal-warnings
3434 sparc*-sun-solaris2.*)
3441 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3443 .section ".tdata",#alloc,#write,#tls'
3448 .section ".tdata","awT",@progbits'
3451 tls_as_opt="-32 --fatal-warnings"
3453 conftest_s="$conftest_s
3456 sethi %tgd_hi22(foo), %o0
3457 add %o0, %tgd_lo10(foo), %o1
3458 add %l7, %o1, %o0, %tgd_add(foo)
3459 call __tls_get_addr, %tgd_call(foo)
3460 sethi %tldm_hi22(foo), %l1
3461 add %l1, %tldm_lo10(foo), %l2
3462 add %l7, %l2, %o0, %tldm_add(foo)
3463 call __tls_get_addr, %tldm_call(foo)
3464 sethi %tldo_hix22(foo), %l3
3465 xor %l3, %tldo_lox10(foo), %l4
3466 add %o0, %l4, %l5, %tldo_add(foo)
3467 sethi %tie_hi22(foo), %o3
3468 add %o3, %tie_lo10(foo), %o3
3469 ld [%l7 + %o3], %o2, %tie_ld(foo)
3470 add %g7, %o2, %o4, %tie_add(foo)
3471 sethi %tle_hix22(foo), %l1
3472 xor %l1, %tle_lox10(foo), %o5
3473 ld [%g7 + %o5], %o1"
3477 .section ".tdata","awT",@progbits
3480 addli r0, zero, tls_gd(foo)
3481 auli r0, zero, tls_gd_ha16(foo)
3482 addli r0, r0, tls_gd_lo16(foo)
3484 addli r0, zero, tls_ie(foo)
3485 auli r0, r0, tls_ie_ha16(foo)
3486 addli r0, r0, tls_ie_lo16(foo)'
3489 tls_as_opt="--fatal-warnings"
3493 .section ".tdata","awT",@progbits
3496 shl16insli r0, zero, hw0_last_tls_gd(foo)
3497 shl16insli r0, zero, hw1_last_tls_gd(foo)
3498 shl16insli r0, r0, hw0_tls_gd(foo)
3500 shl16insli r0, zero, hw1_last_tls_ie(foo)
3501 shl16insli r0, r0, hw0_tls_ie(foo)'
3504 tls_as_opt="--fatal-warnings"
3508 .section ".tdata","awT",@progbits
3511 movi a8, foo@TLSFUNC
3512 movi a10, foo@TLSARG
3513 callx8.tls a8, foo@TLSCALL'
3520 if test "x$enable_tls" = xno ; then
3521 : # TLS explicitly disabled.
3522 elif test "x$enable_tls" = xyes ; then
3523 set_have_as_tls=yes # TLS explicitly enabled.
3524 elif test -z "$tls_first_major"; then
3525 : # If we don't have a check, assume no support.
3527 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3528 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3529 [set_have_as_tls=yes])
3531 if test $set_have_as_tls = yes ; then
3532 AC_DEFINE(HAVE_AS_TLS, 1,
3533 [Define if your assembler and linker support thread-local storage.])
3536 # Target-specific assembler checks.
3538 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3539 gcc_cv_ld_static_dynamic=no
3540 gcc_cv_ld_static_option='-Bstatic'
3541 gcc_cv_ld_dynamic_option='-Bdynamic'
3542 if test $in_tree_ld = yes ; then
3543 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3544 gcc_cv_ld_static_dynamic=yes
3546 elif test x$gcc_cv_ld != x; then
3547 # Check if linker supports -Bstatic/-Bdynamic option
3548 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3549 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3550 gcc_cv_ld_static_dynamic=yes
3553 # AIX ld uses -b flags
3554 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3555 gcc_cv_ld_static_dynamic=yes
3556 gcc_cv_ld_static_option="-bstatic"
3557 gcc_cv_ld_dynamic_option="-bdynamic"
3559 # HP-UX ld uses -a flags to select between shared and archive.
3561 if test x"$gnu_ld" = xno; then
3562 gcc_cv_ld_static_dynamic=yes
3563 gcc_cv_ld_static_option="-aarchive_shared"
3564 gcc_cv_ld_dynamic_option="-adefault"
3567 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3569 gcc_cv_ld_static_dynamic=yes
3574 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3575 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3576 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3577 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3578 [Define to the linker option to disable use of shared objects.])
3579 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3580 [Define to the linker option to enable use of shared objects.])
3582 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3584 if test x"$demangler_in_ld" = xyes; then
3585 AC_MSG_CHECKING(linker --demangle support)
3586 gcc_cv_ld_demangle=no
3587 if test $in_tree_ld = yes; then
3588 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3589 gcc_cv_ld_demangle=yes
3591 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3592 # Check if the GNU linker supports --demangle option
3593 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3594 gcc_cv_ld_demangle=yes
3597 if test x"$gcc_cv_ld_demangle" = xyes; then
3598 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3599 [Define if your linker supports --demangle option.])
3601 AC_MSG_RESULT($gcc_cv_ld_demangle)
3604 AC_MSG_CHECKING(linker plugin support)
3606 if test -f liblto_plugin.la; then
3607 save_ld_ver="$ld_ver"
3608 save_ld_vers_major="$ld_vers_major"
3609 save_ld_vers_minor="$ld_vers_minor"
3610 save_ld_is_gold="$ld_is_gold"
3614 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3616 # FIXME: ld_is_gold?
3617 ld_vers_major="$gcc_cv_gld_major_version"
3618 ld_vers_minor="$gcc_cv_gld_minor_version"
3620 # Determine plugin linker version.
3621 # FIXME: Partial duplicate from above, generalize.
3623 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3624 if echo "$ld_ver" | grep GNU > /dev/null; then
3625 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3627 ld_vers=`echo $ld_ver | sed -n \
3628 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3630 ld_vers=`echo $ld_ver | sed -n \
3631 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3633 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3634 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3639 # Determine plugin support.
3640 if echo "$ld_ver" | grep GNU > /dev/null; then
3641 # Require GNU ld or gold 2.21+ for plugin support by default.
3642 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3644 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3645 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3650 ld_ver="$save_ld_ver"
3651 ld_vers_major="$save_ld_vers_major"
3652 ld_vers_minor="$save_ld_vers_minor"
3653 ld_is_gold="$save_ld_is_gold"
3655 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3656 [Define to the level of your linker's plugin support.])
3657 AC_MSG_RESULT($gcc_cv_lto_plugin)
3661 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3662 [-mabi=lp64], [.text],,,)
3663 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3664 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3665 [Define if your assembler supports the -mabi option.])
3667 if test x$with_abi = xilp32; then
3668 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3669 Upgrade the Assembler.])
3671 if test x"$with_multilib_list" = xdefault; then
3672 TM_MULTILIB_CONFIG=lp64
3674 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3675 for aarch64_multilib in ${aarch64_multilibs}; do
3676 case ${aarch64_multilib} in
3678 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3679 Upgrade the Assembler.])
3687 # Check if we have binutils support for relocations types needed by -fpic
3688 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3691 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3692 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3693 [Define if your assembler supports relocs needed by -fpic.])])
3694 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3695 AC_ARG_ENABLE(fix-cortex-a53-835769,
3697 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3698 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3699 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3700 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3705 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3710 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3711 Valid choices are 'yes' and 'no'.])
3717 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3718 AC_ARG_ENABLE(fix-cortex-a53-843419,
3720 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3721 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3722 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3723 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3728 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3733 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3734 Valid choices are 'yes' and 'no'.])
3742 # All TARGET_ABI_OSF targets.
3743 alpha*-*-linux* | alpha*-*-*bsd*)
3744 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3745 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3748 extbl $3, $2, $3 !lituse_bytoff!1
3749 ldq $2, a($29) !literal!1
3750 ldq $4, b($29) !literal!2
3751 ldq_u $3, 0($2) !lituse_base!1
3752 ldq $27, f($29) !literal!5
3753 jsr $26, ($27), f !lituse_jsr!5
3754 ldah $29, 0($26) !gpdisp!3
3755 lda $0, c($29) !gprel
3756 ldah $1, d($29) !gprelhigh
3757 lda $1, d($1) !gprellow
3758 lda $29, 0($29) !gpdisp!3],,
3759 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3760 [Define if your assembler supports explicit relocations.])])
3761 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3762 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3765 ldq $27, a($29) !literal!1
3766 jsr $26, ($27), a !lituse_jsrdirect!1],,
3767 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3768 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3772 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3773 [--mlink-relax], [.text],,
3774 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3775 [Define if your avr assembler supports --mlink-relax option.])])
3777 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3779 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3780 [Define if your avr assembler supports -mrmw option.])])
3784 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3785 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3786 [-no-mul-bug-abort], [.text],,
3787 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3788 [Define if your assembler supports the -no-mul-bug-abort option.])])
3792 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3793 [.register %g2, #scratch],,
3794 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3795 [Define if your assembler supports .register.])])
3797 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3799 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3800 [Define if your assembler supports -relax option.])])
3802 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3803 gcc_cv_as_sparc_gotdata_op,,
3810 sethi %gdop_hix22(foo), %g1
3811 xor %g1, %gdop_lox10(foo), %g1
3812 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3813 [if test x$gcc_cv_ld != x \
3814 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3815 if test x$gcc_cv_objdump != x; then
3816 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3817 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3818 gcc_cv_as_sparc_gotdata_op=no
3820 gcc_cv_as_sparc_gotdata_op=yes
3825 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3826 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3828 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3829 gcc_cv_as_sparc_ua_pcrel,,
3837 .uaword %r_disp32(foo)],
3838 [if test x$gcc_cv_ld != x \
3839 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3840 gcc_cv_as_sparc_ua_pcrel=yes
3843 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3844 [Define if your assembler and linker support unaligned PC relative relocs.])
3846 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3847 gcc_cv_as_sparc_ua_pcrel_hidden,,
3852 .uaword %r_disp32(foo)
3853 .byte 0x32, 0x33, 0x34
3858 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3859 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3860 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3861 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3862 if $gcc_cv_objdump -R conftest 2> /dev/null \
3863 | grep 'DISP32' > /dev/null 2>&1; then
3866 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3870 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3871 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3872 ]) # unaligned pcrel relocs
3874 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3875 gcc_cv_as_sparc_offsetable_lo10,,
3878 or %g1, %lo(ab) + 12, %g1
3879 or %g1, %lo(ab + 12), %g1],
3880 [if test x$gcc_cv_objdump != x \
3881 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3882 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3883 gcc_cv_as_sparc_offsetable_lo10=yes
3885 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3886 [Define if your assembler supports offsetable %lo().])])
3888 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3889 gcc_cv_as_sparc_fmaf,,
3892 .register %g2, #scratch
3893 .register %g3, #scratch
3895 fmaddd %f0, %f2, %f4, %f6
3896 addxccc %g1, %g2, %g3
3897 fsrl32 %f2, %f4, %f8
3898 fnaddd %f10, %f12, %f14],,
3899 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3900 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3902 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3903 gcc_cv_as_sparc_sparc4,,
3906 .register %g2, #scratch
3907 .register %g3, #scratch
3910 1: cwbneg %g2, %g3, 1f
3913 aes_kexpand0 %f4, %f6, %f8
3914 des_round %f38, %f40, %f42, %f44
3915 camellia_f %f54, %f56, %f58, %f60
3916 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3917 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3918 [Define if your assembler supports SPARC4 instructions.])])
3920 gcc_GAS_CHECK_FEATURE([LEON instructions],
3921 gcc_cv_as_sparc_leon,,
3924 .register %g2, #scratch
3925 .register %g3, #scratch
3929 casa [[%g2]] 0xb, %g3, %g1],,
3930 [AC_DEFINE(HAVE_AS_LEON, 1,
3931 [Define if your assembler supports LEON instructions.])])
3935 i[34567]86-*-* | x86_64-*-*)
3939 # Full C++ conformance when using a shared libstdc++-v3 requires some
3940 # support from the Cygwin DLL, which in more recent versions exports
3941 # wrappers to aid in interposing and redirecting operators new, delete,
3942 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3943 # are configuring for a version of Cygwin that exports the wrappers.
3944 if test x$host = x$target && test x$host_cpu = xi686; then
3945 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3947 # Can't check presence of libc functions during cross-compile, so
3948 # we just have to assume we're building for an up-to-date target.
3949 gcc_ac_cygwin_dll_wrappers=yes
3951 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3952 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3953 [Define if you want to generate code by default that assumes that the
3954 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3957 cygwin* | pe | mingw32* | interix*)
3958 # Recent binutils allows the three-operand form of ".comm" on PE. This
3959 # definition is used unconditionally to initialise the default state of
3960 # the target option variable that governs usage of the feature.
3961 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3962 [2,19,52],,[.comm foo,1,32])
3963 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3964 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3965 [Define if your assembler supports specifying the alignment
3966 of objects allocated using the GAS .comm command.])
3967 # Used for DWARF 2 in PE
3968 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3969 gcc_cv_as_ix86_pe_secrel32,
3975 [if test x$gcc_cv_ld != x \
3976 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3977 gcc_cv_as_ix86_pe_secrel32=yes
3980 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3981 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3982 # Test if the assembler supports the extended form of the .section
3983 # directive that specifies section alignment. LTO support uses this,
3984 # but normally only after installation, so we warn but don't fail the
3985 # configure if LTO is enabled but the assembler does not support it.
3986 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3987 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3988 if test x$gcc_cv_as_section_has_align != xyes; then
3989 case ",$enable_languages," in
3991 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3998 # Test if the assembler supports the section flag 'e' for specifying
3999 # an excluded section.
4000 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
4001 [2,22,51], [--fatal-warnings],
4004 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
4005 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
4006 [Define if your assembler supports specifying the section flag e.])
4008 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4009 gcc_cv_as_ix86_filds,,,
4010 [filds (%ebp); fists (%ebp)],,
4011 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4012 [Define if your assembler uses filds and fists mnemonics.])])
4014 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4015 gcc_cv_as_ix86_fildq,,,
4016 [fildq (%ebp); fistpq (%ebp)],,
4017 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4018 [Define if your assembler uses fildq and fistq mnemonics.])])
4020 gcc_GAS_CHECK_FEATURE([cmov syntax],
4021 gcc_cv_as_ix86_cmov_sun_syntax,,,
4022 [cmovl.l %edx, %eax],,
4023 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4024 [Define if your assembler supports the Sun syntax for cmov.])])
4026 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4027 gcc_cv_as_ix86_ffreep,,,
4029 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4030 [Define if your assembler supports the ffreep mnemonic.])])
4032 gcc_GAS_CHECK_FEATURE([.quad directive],
4033 gcc_cv_as_ix86_quad,,,
4035 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4036 [Define if your assembler supports the .quad directive.])])
4038 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4039 gcc_cv_as_ix86_sahf,,,
4042 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4043 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4045 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4046 gcc_cv_as_ix86_interunit_movq,,,
4050 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4051 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4052 [Define if your assembler supports interunit movq mnemonic.])
4054 gcc_GAS_CHECK_FEATURE([hle prefixes],
4055 gcc_cv_as_ix86_hle,,,
4056 [lock xacquire cmpxchg %esi, (%ecx)],,
4057 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4058 [Define if your assembler supports HLE prefixes.])])
4060 gcc_GAS_CHECK_FEATURE([swap suffix],
4061 gcc_cv_as_ix86_swap,,,
4062 [movl.s %esp, %ebp],,
4063 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4064 [Define if your assembler supports the swap suffix.])])
4066 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4067 gcc_cv_as_ix86_diff_sect_delta,,,
4075 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4076 [Define if your assembler supports the subtraction of symbols in different sections.])])
4078 # These two are used unconditionally by i386.[ch]; it is to be defined
4079 # to 1 if the feature is present, 0 otherwise.
4080 as_ix86_gotoff_in_data_opt=
4081 if test x$gas = xyes; then
4082 as_ix86_gotoff_in_data_opt="--32"
4084 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4085 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4086 [$as_ix86_gotoff_in_data_opt],
4092 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4093 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4094 [Define true if the assembler supports '.long foo@GOTOFF'.])
4096 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4097 gcc_cv_as_ix86_rep_lock_prefix,,,
4103 lock addl %edi, (%eax,%esi)
4104 lock orl $0, (%esp)],,
4105 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4106 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4108 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4109 gcc_cv_as_ix86_ud2,,,
4111 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4112 [Define if your assembler supports the 'ud2' mnemonic.])])
4114 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4115 gcc_cv_as_ix86_tlsgdplt,,,
4116 [call tls_gd@tlsgdplt],
4117 [if test x$gcc_cv_ld != x \
4118 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4119 gcc_cv_as_ix86_tlsgdplt=yes
4122 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4123 [Define if your assembler and linker support @tlsgdplt.])])
4126 .section .tdata,"aw'$tls_section_flag'",@progbits
4128 .section .text,"ax",@progbits
4129 call tls_ld@tlsldmplt'
4130 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4131 gcc_cv_as_ix86_tlsldmplt,,,
4133 [if test x$gcc_cv_ld != x \
4134 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4135 gcc_cv_as_ix86_tlsldmplt=yes
4138 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4139 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4140 [Define to 1 if your assembler and linker support @tlsldmplt.])
4142 # Enforce 32-bit output with gas and gld.
4143 if test x$gas = xyes; then
4144 as_ix86_tls_ldm_opt="--32"
4146 if echo "$ld_ver" | grep GNU > /dev/null; then
4147 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4148 ld_ix86_tls_ldm_opt="-melf_i386_sol2"
4150 ld_ix86_tls_ldm_opt="-melf_i386"
4154 .section .text,"ax",@progbits
4156 .type _start, @function
4158 leal value@tlsldm(%ebx), %eax
4159 call ___tls_get_addr@plt
4161 .section .tdata,"aw'$tls_section_flag'",@progbits
4162 .type value, @object
4164 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4165 gcc_cv_as_ix86_tlsldm,,
4166 [$as_ix86_tls_ldm_opt],
4168 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4169 && $gcc_cv_ld $ld_ix86_tls_ldm_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4170 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4171 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4172 gcc_cv_as_ix86_tlsldm=yes
4176 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4177 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4178 [Define to 1 if your assembler and linker support @tlsldm.])
4183 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4184 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4186 addl r15 = @ltoffx(x#), gp
4188 ld8.mov r16 = [[r15]], x#],,
4189 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4190 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4198 gcc_GAS_CHECK_FEATURE([.machine directive support],
4199 gcc_cv_as_machine_directive,,,
4200 [ .machine ppc7400])
4201 if test x$gcc_cv_as_machine_directive != xyes; then
4202 echo "*** This target requires an assembler supporting \".machine\"" >&2
4203 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4204 test x$build = x$target && exit 1
4210 *-*-aix*) conftest_s=' .machine "pwr5"
4213 *-*-darwin*) conftest_s=' .text
4215 *) conftest_s=' .machine power4
4220 gcc_GAS_CHECK_FEATURE([mfcr field support],
4221 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4223 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4224 [Define if your assembler supports mfcr field.])])
4227 *-*-aix*) conftest_s=' .machine "pwr5"
4230 *) conftest_s=' .machine power5
4235 gcc_GAS_CHECK_FEATURE([popcntb support],
4236 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4238 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4239 [Define if your assembler supports popcntb field.])])
4242 *-*-aix*) conftest_s=' .machine "pwr5x"
4245 *) conftest_s=' .machine power5
4250 gcc_GAS_CHECK_FEATURE([fp round support],
4251 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4253 [AC_DEFINE(HAVE_AS_FPRND, 1,
4254 [Define if your assembler supports fprnd.])])
4257 *-*-aix*) conftest_s=' .machine "pwr6"
4260 *) conftest_s=' .machine power6
4265 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4266 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4268 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4269 [Define if your assembler supports mffgpr and mftgpr.])])
4272 *-*-aix*) conftest_s=' .csect .text[[PR]]
4274 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4278 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4279 *) conftest_s=' .text
4281 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4284 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4285 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4287 [AC_DEFINE(HAVE_AS_REL16, 1,
4288 [Define if your assembler supports R_PPC_REL16 relocs.])])
4291 *-*-aix*) conftest_s=' .machine "pwr6"
4294 *) conftest_s=' .machine power6
4299 gcc_GAS_CHECK_FEATURE([compare bytes support],
4300 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4302 [AC_DEFINE(HAVE_AS_CMPB, 1,
4303 [Define if your assembler supports cmpb.])])
4306 *-*-aix*) conftest_s=' .machine "pwr6"
4309 *) conftest_s=' .machine power6
4314 gcc_GAS_CHECK_FEATURE([decimal float support],
4315 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4317 [AC_DEFINE(HAVE_AS_DFP, 1,
4318 [Define if your assembler supports DFP instructions.])])
4321 *-*-aix*) conftest_s=' .machine "pwr7"
4324 *) conftest_s=' .machine power7
4329 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4330 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4332 [AC_DEFINE(HAVE_AS_VSX, 1,
4333 [Define if your assembler supports VSX instructions.])])
4336 *-*-aix*) conftest_s=' .machine "pwr7"
4339 *) conftest_s=' .machine power7
4344 gcc_GAS_CHECK_FEATURE([popcntd support],
4345 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4347 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4348 [Define if your assembler supports POPCNTD instructions.])])
4351 *-*-aix*) conftest_s=' .machine "pwr8"
4352 .csect .text[[PR]]';;
4353 *) conftest_s=' .machine power8
4357 gcc_GAS_CHECK_FEATURE([power8 support],
4358 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4360 [AC_DEFINE(HAVE_AS_POWER8, 1,
4361 [Define if your assembler supports POWER8 instructions.])])
4364 *-*-aix*) conftest_s=' .machine "pwr9"
4365 .csect .text[[PR]]';;
4366 *) conftest_s=' .machine power9
4370 gcc_GAS_CHECK_FEATURE([power9 support],
4371 gcc_cv_as_powerpc_power9, [2,19,2], -a32,
4373 [AC_DEFINE(HAVE_AS_POWER9, 1,
4374 [Define if your assembler supports POWER9 instructions.])])
4377 *-*-aix*) conftest_s=' .csect .text[[PR]]
4379 *) conftest_s=' .text
4383 gcc_GAS_CHECK_FEATURE([lwsync support],
4384 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4386 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4387 [Define if your assembler supports LWSYNC instructions.])])
4390 *-*-aix*) conftest_s=' .machine "476"
4393 *) conftest_s=' .machine "476"
4398 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4399 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4401 [AC_DEFINE(HAVE_AS_DCI, 1,
4402 [Define if your assembler supports the DCI/ICI instructions.])])
4404 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4405 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4406 [.gnu_attribute 4,1],,
4407 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4408 [Define if your assembler supports .gnu_attribute.])])
4410 gcc_GAS_CHECK_FEATURE([tls marker support],
4411 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4412 [ bl __tls_get_addr(x@tlsgd)],,
4413 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4414 [Define if your assembler supports arg info for __tls_get_addr.])])
4416 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4417 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4418 [ .reloc .,R_PPC64_ENTRY; nop],,
4419 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4420 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4424 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4425 gcc_cv_as_aix_ref, [2,21,0],,
4426 [ .csect stuff[[rw]]
4432 [AC_DEFINE(HAVE_AS_REF, 1,
4433 [Define if your assembler supports .ref])])
4435 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4436 gcc_cv_as_aix_dwloc, [2,21,0],,
4441 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4442 [Define if your assembler supports AIX debug frame section label reference.])])
4448 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4449 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4450 [ lw $4,%gp_rel(foo)($4)],,
4451 [if test x$target_cpu_default = x
4452 then target_cpu_default=MASK_EXPLICIT_RELOCS
4453 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4456 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4457 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4458 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4459 [Define if the assembler understands -mno-shared.])])
4461 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4462 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4463 [.gnu_attribute 4,1],,
4464 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4465 [Define if your assembler supports .gnu_attribute.])])
4467 gcc_GAS_CHECK_FEATURE([.module support],
4468 gcc_cv_as_mips_dot_module,,[-32],
4471 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4472 [Define if your assembler supports .module.])])
4473 if test x$gcc_cv_as_mips_dot_module = xno \
4474 && test x$with_fp_32 != x; then
4476 [Requesting --with-fp-32= requires assembler support for .module.])
4479 gcc_GAS_CHECK_FEATURE([.micromips support],
4480 gcc_cv_as_micromips_support,,[--fatal-warnings],
4482 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4483 [Define if your assembler supports the .set micromips directive])])
4485 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4486 gcc_cv_as_mips_dtprelword, [2,18,0],,
4487 [.section .tdata,"awT",@progbits
4491 .dtprelword x+0x8000],,
4492 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4493 [Define if your assembler supports .dtprelword.])])
4495 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4496 gcc_cv_as_mips_dspr1_mult,,,
4506 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4507 [Define if your assembler supports DSPR1 mult.])])
4509 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4510 gcc_cv_as_ld_jalr_reloc=no
4511 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4512 if test $in_tree_ld = yes ; then
4513 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4514 && test $in_tree_ld_is_elf = yes; then
4515 gcc_cv_as_ld_jalr_reloc=yes
4517 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4518 echo ' .ent x' > conftest.s
4519 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4520 echo ' lw $25,%call16(y)($28)' >> conftest.s
4521 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4522 echo '1: jalr $25' >> conftest.s
4523 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4524 echo '1: jalr $25' >> conftest.s
4525 echo ' .end x' >> conftest.s
4526 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4527 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4528 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4529 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4530 gcc_cv_as_ld_jalr_reloc=yes
4536 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4537 if test x$target_cpu_default = x; then
4538 target_cpu_default=MASK_RELAX_PIC_CALLS
4540 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4543 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4545 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4546 [gcc_cv_ld_mips_personality_relaxation],
4547 [gcc_cv_ld_mips_personality_relaxation=no
4548 if test $in_tree_ld = yes ; then
4549 if test "$gcc_cv_gld_major_version" -eq 2 \
4550 -a "$gcc_cv_gld_minor_version" -ge 21 \
4551 -o "$gcc_cv_gld_major_version" -gt 2; then
4552 gcc_cv_ld_mips_personality_relaxation=yes
4554 elif test x$gcc_cv_as != x \
4555 -a x$gcc_cv_ld != x \
4556 -a x$gcc_cv_readelf != x ; then
4557 cat > conftest.s <<EOF
4559 .cfi_personality 0x80,indirect_ptr
4566 .section .data,"aw",@progbits
4570 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4571 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4572 if $gcc_cv_readelf -d conftest 2>&1 \
4573 | grep TEXTREL > /dev/null 2>&1; then
4575 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4576 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4579 gcc_cv_ld_mips_personality_relaxation=yes
4583 rm -f conftest.s conftest.o conftest])
4584 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4585 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4586 [Define if your linker can relax absolute .eh_frame personality
4587 pointers into PC-relative form.])
4590 gcc_GAS_CHECK_FEATURE([-mnan= support],
4591 gcc_cv_as_mips_nan,,
4593 [AC_DEFINE(HAVE_AS_NAN, 1,
4594 [Define if the assembler understands -mnan=.])])
4595 if test x$gcc_cv_as_mips_nan = xno \
4596 && test x$with_nan != x; then
4598 [Requesting --with-nan= requires assembler support for -mnan=])
4602 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4603 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4604 [.gnu_attribute 8,1],,
4605 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4606 [Define if your assembler supports .gnu_attribute.])])
4607 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4608 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4613 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4614 [Define if your assembler supports .machine and .machinemode.])])
4615 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4616 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4617 [ .machine z13+vx ],,
4618 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4619 [Define if your assembler supports architecture modifiers.])])
4623 # Mips and HP-UX need the GNU assembler.
4624 # Linux on IA64 might be able to use the Intel assembler.
4627 mips*-*-* | *-*-hpux* )
4628 if test x$gas_flag = xyes \
4629 || test x"$host" != x"$build" \
4630 || test ! -x "$gcc_cv_as" \
4631 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4634 echo "*** This configuration requires the GNU assembler" >&2
4640 # ??? Not all targets support dwarf2 debug_line, even within a version
4641 # of gas. Moreover, we need to emit a valid instruction to trigger any
4642 # info to the output file. So, as supported targets are added to gas 2.11,
4643 # add some instruction here to (also) show we expect this might work.
4644 # ??? Once 2.11 is released, probably need to add first known working
4645 # version to the per-target configury.
4647 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4648 | mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
4649 | visium | xstormy16 | xtensa)
4659 if test x"$insn" != x; then
4661 .file 1 \"conftest.s\"
4664 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4665 gcc_cv_as_dwarf2_debug_line,
4666 [elf,2,11,0],, [$conftest_s],
4667 [if test x$gcc_cv_objdump != x \
4668 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4669 | grep debug_line > /dev/null 2>&1; then
4670 gcc_cv_as_dwarf2_debug_line=yes
4673 # The .debug_line file table must be in the exact order that
4674 # we specified the files, since these indices are also used
4675 # by DW_AT_decl_file. Approximate this test by testing if
4676 # the assembler bitches if the same index is assigned twice.
4677 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4678 gcc_cv_as_dwarf2_file_buggy,,,
4682 if test $gcc_cv_as_dwarf2_debug_line = yes \
4683 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4684 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4685 [Define if your assembler supports dwarf2 .file/.loc directives,
4686 and preserves file table indices exactly as given.])
4689 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4690 gcc_cv_as_gdwarf2_flag,
4691 [elf,2,11,0], [--gdwarf2], [$insn],,
4692 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4693 [Define if your assembler supports the --gdwarf2 option.])])
4695 gcc_GAS_CHECK_FEATURE([--gstabs option],
4696 gcc_cv_as_gstabs_flag,
4697 [elf,2,11,0], [--gstabs], [$insn],,
4698 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4699 [Define if your assembler supports the --gstabs option.])])
4701 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4702 gcc_cv_as_debug_prefix_map_flag,
4703 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4704 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4705 [Define if your assembler supports the --debug-prefix-map option.])])
4708 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4709 gcc_cv_as_compress_debug,,[--compress-debug-sections],,
4710 [# gas compiled without zlib cannot compress debug sections and warns
4711 # about it, but still exits successfully. So check for this, too.
4712 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4714 gcc_cv_as_compress_debug=0
4715 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4717 gcc_cv_as_compress_debug=1
4718 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4719 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4721 gcc_cv_as_compress_debug=0
4722 # FIXME: Future gas versions will support ELF gABI style via
4723 # --compress-debug-sections[=type].
4725 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4726 [Define to the level of your assembler's compressed debug section support.])
4727 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4728 [Define to the assembler option to enable compressed debug sections.])
4729 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4730 [Define to the assembler option to disable compressed debug sections.])
4732 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4735 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4736 [Define if your assembler supports .lcomm with an alignment field.])])
4738 if test x$with_sysroot = x && test x$host = x$target \
4739 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4740 && test "$prefix" != "NONE"; then
4741 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4742 [Define to PREFIX/include if cpp should also search that directory.])
4745 # Determine the version of glibc, if any, used on the target.
4746 AC_MSG_CHECKING([for target glibc version])
4747 AC_ARG_WITH([glibc-version],
4748 [AS_HELP_STRING([--with-glibc-version=M.N],
4749 [assume GCC used with glibc version M.N or later])], [
4750 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4751 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4752 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4754 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4756 glibc_version_major=0
4757 glibc_version_minor=0
4758 [if test -f $target_header_dir/features.h \
4759 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4760 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4761 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4762 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4764 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4765 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
4766 [GNU C Library major version number used on the target, or 0.])
4767 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
4768 [GNU C Library minor version number used on the target, or 0.])
4770 AC_ARG_ENABLE(gnu-unique-object,
4771 [AS_HELP_STRING([--enable-gnu-unique-object],
4772 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4773 [case $enable_gnu_unique_object in
4775 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4776 Valid choices are 'yes' and 'no'.]) ;;
4778 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4780 [.type foo, '$target_type_format_char'gnu_unique_object],,
4781 # We need to unquote above to to use the definition from config.gcc.
4782 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4783 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4785 if test x$enable_gnu_unique_object = xyes; then
4786 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4787 [Define if your assembler supports @gnu_unique_object.])
4790 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4791 [gcc_cv_as_line_zero],
4792 [gcc_cv_as_line_zero=no
4793 if test $in_tree_gas = yes; then
4794 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4795 elif test "x$gcc_cv_as" != x; then
4796 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4797 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4798 test "x`cat conftest.out`" = x
4800 gcc_cv_as_line_zero=yes
4802 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4803 cat conftest.s >&AS_MESSAGE_LOG_FD
4804 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4805 cat conftest.out >&AS_MESSAGE_LOG_FD
4807 rm -f conftest.o conftest.s conftest.out
4809 if test "x$gcc_cv_as_line_zero" = xyes; then
4810 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4811 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4814 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4815 gcc_cv_ld_eh_frame_hdr=no
4816 if test $in_tree_ld = yes ; then
4817 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4818 && test $in_tree_ld_is_elf = yes; then
4819 gcc_cv_ld_eh_frame_hdr=yes
4821 elif test x$gcc_cv_ld != x; then
4822 if echo "$ld_ver" | grep GNU > /dev/null; then
4823 # Check if linker supports --eh-frame-hdr option
4824 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4825 gcc_cv_ld_eh_frame_hdr=yes
4830 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4831 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4832 gcc_cv_ld_eh_frame_hdr=yes
4838 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4839 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4840 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4841 [Define if your linker supports .eh_frame_hdr.])
4843 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4845 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4846 gcc_cv_ld_eh_frame_ciev3=no
4847 if test $in_tree_ld = yes ; then
4848 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4849 && test $in_tree_ld_is_elf = yes; then
4850 gcc_cv_ld_eh_frame_ciev3=yes
4852 elif test x$gcc_cv_ld != x; then
4853 if echo "$ld_ver" | grep GNU > /dev/null; then
4854 gcc_cv_ld_eh_frame_ciev3=yes
4855 if test 0"$ld_date" -lt 20040513; then
4856 if test -n "$ld_date"; then
4857 # If there was date string, but was earlier than 2004-05-13, fail
4858 gcc_cv_ld_eh_frame_ciev3=no
4859 elif test "$ld_vers_major" -lt 2; then
4860 gcc_cv_ld_eh_frame_ciev3=no
4861 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4862 gcc_cv_ld_eh_frame_ciev3=no
4868 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4869 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4870 gcc_cv_ld_eh_frame_ciev3=yes
4876 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4877 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4878 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4879 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4881 AC_MSG_CHECKING(linker position independent executable support)
4883 if test $in_tree_ld = yes ; then
4885 # Full PIE support on Solaris was only introduced in gld 2.26.
4886 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
4887 *) gcc_gld_pie_min_version=15 ;;
4889 if test "$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 \
4890 && test $in_tree_ld_is_elf = yes; then
4893 elif test x$gcc_cv_ld != x; then
4894 # Check if linker supports -pie option
4895 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4899 if echo "$ld_ver" | grep GNU > /dev/null \
4900 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
4907 *-*-solaris2.1[[1-9]]*)
4908 # Solaris 11.x and Solaris 12 added PIE support.
4909 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
4916 if test x"$gcc_cv_ld_pie" = xyes; then
4917 AC_DEFINE(HAVE_LD_PIE, 1,
4918 [Define if your linker supports PIE option.])
4920 AC_MSG_RESULT($gcc_cv_ld_pie)
4922 AC_MSG_CHECKING(linker PIE support with copy reloc)
4923 gcc_cv_ld_pie_copyreloc=no
4924 if test $gcc_cv_ld_pie = yes ; then
4925 if test $in_tree_ld = yes ; then
4926 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
4927 gcc_cv_ld_pie_copyreloc=yes
4929 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4930 # Check if linker supports -pie option with copy reloc
4932 i?86-*-linux* | x86_64-*-linux*)
4933 cat > conftest1.s <<EOF
4936 .type a_glob, @object
4941 cat > conftest2.s <<EOF
4944 .type main, @function
4946 movl %eax, a_glob(%rip)
4949 .section .data.rel,"aw",@progbits
4954 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4955 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
4956 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4957 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
4958 gcc_cv_ld_pie_copyreloc=yes
4960 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
4965 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
4966 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
4967 [Define 0/1 if your linker supports -pie option with copy reloc.])
4968 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
4970 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4971 gcc_cv_ld_eh_gc_sections=no
4972 if test $in_tree_ld = yes ; then
4973 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4974 && test $in_tree_ld_is_elf = yes; then
4975 gcc_cv_ld_eh_gc_sections=yes
4977 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4978 cat > conftest.s <<EOF
4981 .type _start, @function
4984 .size _start, .-_start
4985 .section .text.foo,"ax",@progbits
4986 .type foo, @function
4990 .section .gcc_except_table.foo,"a",@progbits
4993 .section .eh_frame,"a",@progbits
4996 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4997 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4998 | grep "gc-sections option ignored" > /dev/null; then
4999 gcc_cv_ld_eh_gc_sections=no
5000 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5001 | grep gcc_except_table > /dev/null; then
5002 gcc_cv_ld_eh_gc_sections=yes
5003 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5004 if test x$gcc_cv_as_comdat_group != xyes; then
5005 gcc_cv_ld_eh_gc_sections=no
5006 cat > conftest.s <<EOF
5009 .type _start, @function
5012 .size _start, .-_start
5013 .section .gnu.linkonce.t.foo,"ax",@progbits
5014 .type foo, @function
5018 .section .gcc_except_table.foo,"a",@progbits
5021 .section .eh_frame,"a",@progbits
5024 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5025 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5026 | grep "gc-sections option ignored" > /dev/null; then
5027 gcc_cv_ld_eh_gc_sections=no
5028 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5029 | grep gcc_except_table > /dev/null; then
5030 gcc_cv_ld_eh_gc_sections=yes
5036 rm -f conftest.s conftest.o conftest
5040 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5041 gcc_cv_ld_eh_gc_sections=no
5044 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5045 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5046 [Define if your linker supports garbage collection of
5047 sections in presence of EH frames.])
5049 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5051 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5052 gcc_cv_ld_eh_gc_sections_bug=no
5053 if test $in_tree_ld = yes ; then
5054 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5055 && test $in_tree_ld_is_elf = yes; then
5056 gcc_cv_ld_eh_gc_sections_bug=yes
5058 elif test x$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
5059 gcc_cv_ld_eh_gc_sections_bug=yes
5060 cat > conftest.s <<EOF
5063 .type _start, @function
5066 .size _start, .-_start
5067 .section .text.startup.foo,"ax",@progbits
5068 .type foo, @function
5072 .section .gcc_except_table.foo,"a",@progbits
5075 .section .eh_frame,"a",@progbits
5078 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5079 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5080 | grep "gc-sections option ignored" > /dev/null; then
5082 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5083 | grep gcc_except_table > /dev/null; then
5084 gcc_cv_ld_eh_gc_sections_bug=no
5087 rm -f conftest.s conftest.o conftest
5089 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5090 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5091 [Define if your linker has buggy garbage collection of
5092 sections support when .text.startup.foo like sections are used.])
5094 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5096 AC_MSG_CHECKING(linker for compressed debug sections)
5097 # gold/gld support compressed debug sections since binutils 2.19/2.21
5098 if test $in_tree_ld = yes ; then
5099 gcc_cv_ld_compress_debug=0
5100 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5101 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5102 gcc_cv_ld_compress_debug=2
5103 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5104 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5105 && test $in_tree_ld_is_elf = yes; then
5106 gcc_cv_ld_compress_debug=1
5108 elif echo "$ld_ver" | grep GNU > /dev/null; then
5109 gcc_cv_ld_compress_debug=1
5110 if test 0"$ld_date" -lt 20050308; then
5111 if test -n "$ld_date"; then
5112 # If there was date string, but was earlier than 2005-03-08, fail
5113 gcc_cv_ld_compress_debug=0
5114 elif test "$ld_vers_major" -lt 2; then
5115 gcc_cv_ld_compress_debug=0
5116 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5117 gcc_cv_ld_compress_debug=0
5120 if test $ld_is_gold = yes; then
5121 gcc_cv_ld_compress_debug=2
5122 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5128 # Introduced in Solaris 11.2.
5129 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5130 gcc_cv_ld_compress_debug=3
5131 gcc_cv_ld_compress_debug_option="-z compress-sections"
5133 gcc_cv_ld_compress_debug=0
5137 # Assume linkers other than GNU ld don't support compessed debug
5139 gcc_cv_ld_compress_debug=0
5144 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5145 [Define to the level of your linker's compressed debug section support.])
5146 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5147 [Define to the linker option to enable compressed debug sections.])
5148 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5154 AC_CACHE_CHECK(linker --as-needed support,
5155 gcc_cv_ld_as_needed,
5156 [gcc_cv_ld_as_needed=no
5157 gcc_cv_ld_as_needed_option='--as-needed'
5158 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5159 if test $in_tree_ld = yes ; then
5160 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5161 && test $in_tree_ld_is_elf = yes; then
5162 gcc_cv_ld_as_needed=yes
5164 elif test x$gcc_cv_ld != x; then
5165 # Check if linker supports --as-needed and --no-as-needed options
5166 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
5167 gcc_cv_ld_as_needed=yes
5170 # Solaris 2 ld always supports -z ignore/-z record.
5172 gcc_cv_ld_as_needed=yes
5173 gcc_cv_ld_as_needed_option="-z ignore"
5174 gcc_cv_ld_no_as_needed_option="-z record"
5179 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5180 # dl_iterate_phdr, i.e. since Solaris 11.
5182 *-*-solaris2.1[[1-9]]*)
5184 i?86-*-* | x86_64-*-*)
5185 if echo "$ld_ver" | grep GNU > /dev/null; then
5186 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5187 gcc_cv_ld_as_needed=no
5193 gcc_cv_ld_as_needed=no
5197 if test x"$gcc_cv_ld_as_needed" = xyes; then
5198 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5199 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5200 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5201 [Define to the linker option to ignore unused dependencies.])
5202 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5203 [Define to the linker option to keep unused dependencies.])
5206 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5207 saved_LDFLAGS="$LDFLAGS"
5208 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5209 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5210 AC_LINK_IFELSE([int main(void) {return 0;}],
5211 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5213 LDFLAGS="$saved_LDFLAGS"
5214 if test "x$gcc_cv_ld_clearcap" = xyes; then
5215 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5216 [Define if the linker supports clearing hardware capabilities via mapfile.])
5217 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5219 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5221 case "$target:$tm_file" in
5222 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5225 emul_name="-melf64lppc"
5228 emul_name="-melf64ppc"
5231 emul_name="-melf64ppc_fbsd"
5234 AC_CACHE_CHECK(linker support for omitting dot symbols,
5235 gcc_cv_ld_no_dot_syms,
5236 [gcc_cv_ld_no_dot_syms=no
5237 if test x"$ld_is_gold" = xyes; then
5238 gcc_cv_ld_no_dot_syms=yes
5239 elif test $in_tree_ld = yes ; then
5240 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5241 gcc_cv_ld_no_dot_syms=yes
5243 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5244 cat > conftest1.s <<EOF
5248 cat > conftest2.s <<EOF
5249 .section ".opd","aw"
5254 .quad .LEfoo,.TOC.@tocbase,0
5260 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5261 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5262 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5263 gcc_cv_ld_no_dot_syms=yes
5265 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5268 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5269 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5270 [Define if your PowerPC64 linker only needs function descriptor syms.])
5273 AC_CACHE_CHECK(linker large toc support,
5274 gcc_cv_ld_large_toc,
5275 [gcc_cv_ld_large_toc=no
5276 if test x"$ld_is_gold" = xyes; then
5277 gcc_cv_ld_large_toc=yes
5278 elif test $in_tree_ld = yes ; then
5279 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5280 gcc_cv_ld_large_toc=yes
5282 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5283 cat > conftest.s <<EOF
5284 .section ".tbss","awT",@nobits
5290 addis 9,13,ie0@got@tprel@ha
5291 ld 9,ie0@got@tprel@l(9)
5293 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5294 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5295 gcc_cv_ld_large_toc=yes
5297 rm -f conftest conftest.o conftest.s
5300 if test x"$gcc_cv_ld_large_toc" = xyes; then
5301 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5302 [Define if your PowerPC64 linker supports a large TOC.])
5305 AC_CACHE_CHECK(linker toc pointer alignment,
5306 gcc_cv_ld_toc_align,
5307 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5308 cat > conftest.s <<EOF
5313 .section .data.rel.ro,"aw",@progbits
5318 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5319 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5320 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5322 rm -f conftest conftest.o conftest.s
5325 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5326 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5327 [Define to .TOC. alignment forced by your linker.])
5334 AC_CACHE_CHECK(linker large toc support,
5335 gcc_cv_ld_large_toc,
5336 [gcc_cv_ld_large_toc=no
5337 if test x$gcc_cv_as != x ; then
5338 cat > conftest.s <<EOF
5348 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5349 gcc_cv_ld_large_toc=yes
5351 rm -f conftest conftest.o conftest.s
5354 if test x"$gcc_cv_ld_large_toc" = xyes; then
5355 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5356 [Define if your PowerPC64 linker supports a large TOC.])
5361 AC_CACHE_CHECK(linker --build-id support,
5363 [gcc_cv_ld_buildid=no
5364 if test $in_tree_ld = yes ; then
5365 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5366 "$gcc_cv_gld_minor_version" -ge 18 -o \
5367 "$gcc_cv_gld_major_version" -gt 2 \
5368 && test $in_tree_ld_is_elf = yes; then
5369 gcc_cv_ld_buildid=yes
5371 elif test x$gcc_cv_ld != x; then
5372 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
5373 gcc_cv_ld_buildid=yes
5376 if test x"$gcc_cv_ld_buildid" = xyes; then
5377 AC_DEFINE(HAVE_LD_BUILDID, 1,
5378 [Define if your linker supports --build-id.])
5381 AC_ARG_ENABLE(linker-build-id,
5382 [AS_HELP_STRING([--enable-linker-build-id],
5383 [compiler will always pass --build-id to linker])],
5385 enable_linker_build_id=no)
5387 if test x"$enable_linker_build_id" = xyes; then
5388 if test x"$gcc_cv_ld_buildid" = xyes; then
5389 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5390 [Define if gcc should always pass --build-id to linker.])
5392 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5396 # In binutils 2.21, GNU ld gained support for new emulations fully
5397 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5398 AC_CACHE_CHECK(linker *_sol2 emulation support,
5399 gcc_cv_ld_sol2_emulation,
5400 [gcc_cv_ld_sol2_emulation=no
5401 if test $in_tree_ld = yes ; then
5402 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5403 "$gcc_cv_gld_minor_version" -ge 21 -o \
5404 "$gcc_cv_gld_major_version" -gt 2 \
5405 && test $in_tree_ld_is_elf = yes; then
5406 gcc_cv_ld_sol2_emulation=yes
5408 elif test x$gcc_cv_ld != x; then
5409 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5410 grep _sol2 > /dev/null; then
5411 gcc_cv_ld_sol2_emulation=yes
5414 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5415 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5416 [Define if your linker supports the *_sol2 emulations.])
5419 AC_CACHE_CHECK(linker --sysroot support,
5421 [gcc_cv_ld_sysroot=no
5422 if test $in_tree_ld = yes ; then
5423 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5424 gcc_cv_ld_sysroot=yes
5426 elif test x$gcc_cv_ld != x; then
5427 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
5428 gcc_cv_ld_sysroot=yes
5431 if test x"$gcc_cv_ld_sysroot" = xyes; then
5432 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5433 [Define if your linker supports --sysroot.])
5438 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5439 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5440 gcc_cv_solaris_crts,
5441 [gcc_cv_solaris_crts=no
5442 if test x$host != x$target; then
5443 if test "x$with_sysroot" = xyes; then
5444 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5446 target_sysroot="${with_sysroot}"
5449 target_libdir="$target_sysroot/usr/lib"
5450 # At the time they were added, gcrt1.o became a symlink for backwards
5451 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5453 i?86-*-solaris2* | x86_64-*-solaris2*)
5454 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5457 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5462 if test x$gcc_cv_solaris_crts = xyes; then
5463 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5464 [Define if the system-provided CRTs are present on Solaris.])
5467 # Test for stack protector support in target C library.
5468 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5469 gcc_cv_libc_provides_ssp,
5470 [gcc_cv_libc_provides_ssp=no
5473 # All versions of musl provide stack protector
5474 gcc_cv_libc_provides_ssp=yes;;
5475 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
5476 # glibc 2.4 and later provides __stack_chk_fail and
5477 # either __stack_chk_guard, or TLS access to stack guard canary.
5478 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5479 [if test -f $target_header_dir/features.h \
5480 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5481 $target_header_dir/features.h > /dev/null; then
5482 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5483 $target_header_dir/features.h > /dev/null && \
5484 test -f $target_header_dir/bits/uClibc_config.h && \
5485 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5486 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5487 gcc_cv_libc_provides_ssp=yes
5489 # all versions of Bionic support stack protector
5490 elif test -f $target_header_dir/sys/cdefs.h \
5491 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5492 $target_header_dir/sys/cdefs.h > /dev/null; then
5493 gcc_cv_libc_provides_ssp=yes
5497 # Avoid complicated tests (see
5498 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5499 # simply assert that glibc does provide this, which is true for all
5500 # realistically usable GNU/Hurd configurations.
5501 # All supported versions of musl provide it as well
5502 gcc_cv_libc_provides_ssp=yes;;
5503 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
5504 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5505 [echo "no __stack_chk_fail on this target"])
5507 *) gcc_cv_libc_provides_ssp=no ;;
5510 if test x$gcc_cv_libc_provides_ssp = xyes; then
5511 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5512 [Define if your target C library provides stack protector support])
5515 # Check whether --enable-default-ssp was given.
5516 AC_ARG_ENABLE(default-ssp,
5517 [AS_HELP_STRING([--enable-default-ssp],
5518 [enable Stack Smashing Protection as default])],[
5519 if test x$gcc_cv_libc_provides_ssp = xyes; then
5521 ia64*-*-*) enable_default_ssp=no ;;
5522 *) enable_default_ssp=$enableval ;;
5525 enable_default_ssp=no
5527 enable_default_ssp=no)
5528 if test x$enable_default_ssp = xyes ; then
5529 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5530 [Define if your target supports default stack protector and it is enabled.])
5532 AC_SUBST([enable_default_ssp])
5534 # Test for <sys/sdt.h> on the target.
5535 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5536 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5538 if test -f $target_header_dir/sys/sdt.h; then
5540 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5541 [Define if your target C library provides sys/sdt.h])
5543 AC_MSG_RESULT($have_sys_sdt_h)
5545 # Check if TFmode long double should be used by default or not.
5546 # Some glibc targets used DFmode long double, but with glibc 2.4
5547 # and later they can use TFmode.
5549 powerpc*-*-linux* | \
5553 AC_ARG_WITH(long-double-128,
5554 [AS_HELP_STRING([--with-long-double-128],
5555 [use 128-bit long double by default])],
5556 gcc_cv_target_ldbl128="$with_long_double_128",
5557 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5558 [gcc_cv_target_ldbl128=no
5559 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5560 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5561 && gcc_cv_target_ldbl128=yes
5565 if test x$gcc_cv_target_ldbl128 = xyes; then
5566 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5567 [Define if TFmode long double should be the default])
5570 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
5571 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
5572 gcc_cv_libc_provides_hwcap_in_tcb=no
5575 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
5578 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
5579 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
5580 [Define if your target C Library provides the AT_HWCAP value in the TCB])
5583 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5584 gcc_cv_target_dl_iterate_phdr=unknown
5586 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5587 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5588 # libdl there, both complicating its use and breaking compatibility
5589 # between Solaris 10 updates.
5590 *-*-solaris2.1[[1-9]]*)
5591 # <link.h> needs both a dl_iterate_phdr declaration and support for
5592 # compilation with largefile support.
5593 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5594 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5595 gcc_cv_target_dl_iterate_phdr=yes
5597 gcc_cv_target_dl_iterate_phdr=no
5600 *-*-dragonfly* | *-*-freebsd*)
5601 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5602 gcc_cv_target_dl_iterate_phdr=yes
5604 gcc_cv_target_dl_iterate_phdr=no
5608 gcc_cv_target_dl_iterate_phdr=yes
5611 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5612 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5613 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5614 [Define if your target C library provides the `dl_iterate_phdr' function.])
5616 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5618 # We no longer support different GC mechanisms. Emit an error if
5619 # the user configures with --with-gc.
5621 [AS_HELP_STRING([--with-gc={page,zone}],
5622 [this option is not supported anymore. It used to choose
5623 the garbage collection mechanism to use with the compiler])],
5624 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5627 # Libraries to use on the host. This will normally be set by the top
5628 # level Makefile. Here we simply capture the value for our Makefile.
5629 if test -z "${HOST_LIBS+set}"; then
5634 # Use the system's zlib library.
5637 dnl Very limited version of automake's enable-maintainer-mode
5639 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5640 dnl maintainer-mode is disabled by default
5641 AC_ARG_ENABLE(maintainer-mode,
5642 [AS_HELP_STRING([--enable-maintainer-mode],
5643 [enable make rules and dependencies not useful
5644 (and sometimes confusing) to the casual installer])],
5645 maintainer_mode=$enableval,
5648 AC_MSG_RESULT($maintainer_mode)
5650 if test "$maintainer_mode" = "yes"; then
5657 dnl Whether to prevent multiple front-ends from linking at the same time
5659 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5660 AC_ARG_ENABLE(link-mutex,
5661 [AS_HELP_STRING([--enable-link-mutex],
5662 [avoid linking multiple front-ends at once to avoid thrashing
5663 on the build machine])],
5664 do_link_mutex=$enableval,
5666 AC_MSG_RESULT($do_link_mutex)
5668 if test "$do_link_mutex" = "yes"; then
5673 AC_SUBST(DO_LINK_MUTEX)
5679 # Make empty files to contain the specs and options for each language.
5680 # Then add #include lines to for a compiler that has specs and/or options.
5686 # These (without "all_") are set in each config-lang.in.
5687 # `language' must be a single word so is spelled singularly.
5690 all_outputs='Makefile'
5691 # List of language makefile fragments.
5693 # Additional files for gengtype
5694 all_gtfiles="$target_gtfiles"
5696 # These are the languages that are set in --enable-languages,
5697 # and are available in the GCC tree.
5698 all_selected_languages=
5700 # Add the language fragments.
5701 # Languages are added via two mechanisms. Some information must be
5702 # recorded in makefile variables, these are defined in config-lang.in.
5703 # We accumulate them and plug them into the main Makefile.
5704 # The other mechanism is a set of hooks for each of the main targets
5705 # like `clean', `install', etc.
5707 language_hooks="Make-hooks"
5709 for lang in ${srcdir}/*/config-lang.in
5712 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5714 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5715 if test "x$lang_alias" = x
5717 echo "$lang doesn't set \$language." 1>&2
5720 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5721 subdirs="$subdirs $subdir"
5723 # $gcc_subdir is where the gcc integration files are to be found
5724 # for a language, both for internal compiler purposes (compiler
5725 # sources implementing front-end to GCC tree converters), and for
5726 # build infrastructure purposes (Make-lang.in, etc.)
5728 # This will be <subdir> (relative to $srcdir) if a line like
5729 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5730 # is found in <langdir>/config-lang.in, and will remain <langdir>
5733 # Except for the language alias (fetched above), the regular
5734 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5735 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5736 # only this and the language alias.
5738 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5739 if [ "$gcc_subdir" = "" ]; then
5740 gcc_subdir="$subdir"
5743 case ",$enable_languages," in
5745 all_selected_languages="$all_selected_languages $lang_alias"
5746 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5747 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5759 . ${srcdir}/$gcc_subdir/config-lang.in
5760 if test "x$language" = x
5762 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5767 case ",$enable_languages," in
5770 for i in $subdir_requires; do
5771 test -f "${srcdir}/$i/config-lang.in" && continue
5779 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5780 if test -f $srcdir/$gcc_subdir/lang.opt; then
5781 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5782 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5784 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5785 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5787 all_languages="$all_languages $language"
5788 all_compilers="$all_compilers $compilers"
5789 all_outputs="$all_outputs $outputs"
5790 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5791 case ",$enable_languages," in
5793 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5795 AC_SUBST(enable_lto)
5802 for language in $all_selected_languages
5804 check_languages="$check_languages check-$language"
5807 # We link each language in with a set of hooks, reached indirectly via
5808 # lang.${target}. Only do so for selected languages.
5812 target_list="all.cross start.encap rest.encap tags \
5813 install-common install-man install-info install-pdf install-html dvi \
5814 pdf html uninstall info man srcextra srcman srcinfo \
5815 mostlyclean clean distclean maintainer-clean install-plugin"
5817 for t in $target_list
5820 for lang in $all_selected_languages
5824 echo "lang.$t: $x" >> Make-hooks
5828 # Option include files
5831 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5832 option_includes="option-includes.mk"
5833 AC_SUBST_FILE(option_includes)
5841 echo "dir ." > .gdbinit
5842 echo "dir ${srcdir}" >> .gdbinit
5843 if test x$gdb_needs_out_file_path = xyes
5845 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5847 if test "x$subdirs" != x; then
5850 echo "dir ${srcdir}/$s" >> .gdbinit
5853 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5854 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
5856 # Put a breakpoint on __asan_report_error to help with debugging buffer
5859 *-fsanitize=address*)
5860 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
5864 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5865 AC_SUBST(gcc_tooldir)
5868 # Find a directory in which to install a shared libgcc.
5870 AC_ARG_ENABLE(version-specific-runtime-libs,
5871 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5872 [specify that runtime libraries should be
5873 installed in a compiler-specific directory])])
5875 # Substitute configuration variables
5878 AC_SUBST(all_compilers)
5879 AC_SUBST(all_gtfiles)
5880 AC_SUBST(all_lang_makefrags)
5881 AC_SUBST(all_languages)
5882 AC_SUBST(all_selected_languages)
5883 AC_SUBST(build_exeext)
5884 AC_SUBST(build_install_headers_dir)
5885 AC_SUBST(build_xm_file_list)
5886 AC_SUBST(build_xm_include_list)
5887 AC_SUBST(build_xm_defines)
5888 AC_SUBST(build_file_translate)
5889 AC_SUBST(check_languages)
5890 AC_SUBST(cpp_install_dir)
5891 AC_SUBST(xmake_file)
5892 AC_SUBST(tmake_file)
5893 AC_SUBST(TM_ENDIAN_CONFIG)
5894 AC_SUBST(TM_MULTILIB_CONFIG)
5895 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5896 AC_SUBST(extra_gcc_objs)
5897 AC_SUBST(user_headers_inc_next_pre)
5898 AC_SUBST(user_headers_inc_next_post)
5899 AC_SUBST(extra_headers_list)
5900 AC_SUBST(extra_objs)
5901 AC_SUBST(extra_programs)
5902 AC_SUBST(float_h_file)
5903 AC_SUBST(gcc_config_arguments)
5904 AC_SUBST(gcc_gxx_include_dir)
5905 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5906 AC_SUBST(host_exeext)
5907 AC_SUBST(host_xm_file_list)
5908 AC_SUBST(host_xm_include_list)
5909 AC_SUBST(host_xm_defines)
5910 AC_SUBST(out_host_hook_obj)
5912 AC_SUBST(lang_opt_files)
5913 AC_SUBST(lang_specs_files)
5914 AC_SUBST(lang_tree_files)
5915 AC_SUBST(local_prefix)
5917 AC_SUBST(objc_boehm_gc)
5919 AC_SUBST(out_object_file)
5920 AC_SUBST(common_out_file)
5921 AC_SUBST(common_out_object_file)
5922 AC_SUBST(tm_file_list)
5923 AC_SUBST(tm_include_list)
5924 AC_SUBST(tm_defines)
5925 AC_SUBST(tm_p_file_list)
5926 AC_SUBST(tm_p_include_list)
5927 AC_SUBST(xm_file_list)
5928 AC_SUBST(xm_include_list)
5929 AC_SUBST(xm_defines)
5930 AC_SUBST(use_gcc_stdint)
5931 AC_SUBST(c_target_objs)
5932 AC_SUBST(cxx_target_objs)
5933 AC_SUBST(fortran_target_objs)
5934 AC_SUBST(target_cpu_default)
5936 AC_SUBST_FILE(language_hooks)
5939 if test x${build} = x${host} ; then
5940 if test x${host} = x${target} ; then
5941 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5943 echo "Links are now set up to build a cross-compiler" 1>&2
5944 echo " from ${host} to ${target}." 1>&2
5947 if test x${host} = x${target} ; then
5948 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5949 echo " for ${target}." 1>&2
5951 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5952 echo " from ${host} to ${target}." 1>&2
5956 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5957 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5959 AC_ARG_VAR(ISLLIBS,[How to link isl])
5960 AC_ARG_VAR(ISLINC,[How to find isl include files])
5961 if test "x${ISLLIBS}" != "x" ; then
5962 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
5965 # Check whether isl_options_set_schedule_serialize_sccs is available;
5966 # it's new in isl 0.15.
5967 if test "x${ISLLIBS}" != "x" ; then
5968 saved_CXXFLAGS="$CXXFLAGS"
5969 CXXFLAGS="$CXXFLAGS $ISLINC $GMPINC"
5971 LIBS="$LIBS $ISLLIBS $GMPLIBS"
5973 AC_MSG_CHECKING([Checking for isl_options_set_schedule_serialize_sccs])
5974 AC_TRY_LINK([#include <isl/schedule.h>],
5975 [isl_options_set_schedule_serialize_sccs (NULL, 0);],
5976 [ac_has_isl_options_set_schedule_serialize_sccs=yes],
5977 [ac_has_isl_options_set_schedule_serialize_sccs=no])
5978 AC_MSG_RESULT($ac_has_isl_options_set_schedule_serialize_sccs)
5981 CXXFLAGS="$saved_CXXFLAGS"
5983 if test x"$ac_has_isl_options_set_schedule_serialize_sccs" = x"yes"; then
5984 AC_DEFINE(HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS, 1,
5985 [Define if isl_options_set_schedule_serialize_sccs exists.])
5990 AC_SUBST(pluginlibs)
5991 AC_SUBST(enable_plugin)
5992 if test x"$enable_plugin" = x"yes"; then
5993 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5997 # Enable --enable-host-shared
5998 AC_ARG_ENABLE(host-shared,
5999 [AS_HELP_STRING([--enable-host-shared],
6000 [build host code as shared libraries])],
6001 [PICFLAG=-fPIC], [PICFLAG=])
6002 AC_SUBST(enable_host_shared)
6006 AC_ARG_ENABLE(libquadmath-support,
6007 [AS_HELP_STRING([--disable-libquadmath-support],
6008 [disable libquadmath support for Fortran])],
6009 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6010 ENABLE_LIBQUADMATH_SUPPORT=yes)
6011 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6012 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6013 [Define to 1 to enable libquadmath support])
6017 # Specify what hash style to use by default.
6018 AC_ARG_WITH([linker-hash-style],
6019 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6020 [specify the linker hash style])],
6021 [case x"$withval" in
6023 LINKER_HASH_STYLE=sysv
6026 LINKER_HASH_STYLE=gnu
6029 LINKER_HASH_STYLE=both
6032 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6035 [LINKER_HASH_STYLE=''])
6036 if test x"${LINKER_HASH_STYLE}" != x; then
6037 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6038 [The linker hash style])
6041 # Specify what should be the default of -fdiagnostics-color option.
6042 AC_ARG_WITH([diagnostics-color],
6043 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6044 [specify the default of -fdiagnostics-color option
6045 auto-if-env stands for -fdiagnostics-color=auto if
6046 GCC_COLOR environment variable is present and
6047 -fdiagnostics-color=never otherwise])],
6048 [case x"$withval" in
6050 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6053 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6056 DIAGNOSTICS_COLOR_DEFAULT=-1
6059 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6062 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6065 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6066 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6067 [The default for -fdiagnostics-color option])
6069 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6070 # of jit/jit-playback.c.
6071 cat > gcc-driver-name.h <<EOF
6072 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
6075 # Check whether --enable-default-pie was given.
6076 AC_ARG_ENABLE(default-pie,
6077 [AS_HELP_STRING([--enable-default-pie],
6078 [enable Position Independent Executable as default])],
6079 enable_default_pie=$enableval,
6080 enable_default_pie=no)
6081 if test x$enable_default_pie = xyes ; then
6082 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6083 [Define if your target supports default PIE and it is enabled.])
6085 AC_SUBST([enable_default_pie])
6087 # Check if -fno-PIE works.
6088 AC_CACHE_CHECK([for -fno-PIE option],
6090 [saved_CXXFLAGS="$CXXFLAGS"
6091 CXXFLAGS="$CXXFLAGS -fno-PIE"
6092 AC_COMPILE_IFELSE([int main(void) {return 0;}],
6093 [gcc_cv_c_no_fpie=yes],
6094 [gcc_cv_c_no_fpie=no])
6095 CXXFLAGS="$saved_CXXFLAGS"])
6096 if test "$gcc_cv_c_no_fpie" = "yes"; then
6097 NO_PIE_CFLAGS="-fno-PIE"
6099 AC_SUBST([NO_PIE_CFLAGS])
6101 # Check if -no-pie works.
6102 AC_CACHE_CHECK([for -no-pie option],
6104 [saved_LDFLAGS="$LDFLAGS"
6105 LDFLAGS="$LDFLAGS -no-pie"
6106 AC_LINK_IFELSE([int main(void) {return 0;}],
6107 [gcc_cv_no_pie=yes],
6109 LDFLAGS="$saved_LDFLAGS"])
6110 if test "$gcc_cv_no_pie" = "yes"; then
6111 NO_PIE_FLAG="-no-pie"
6113 AC_SUBST([NO_PIE_FLAG])
6115 # Check linker supports '-z bndplt'
6116 ld_bndplt_support=no
6117 AC_MSG_CHECKING(linker -z bndplt option)
6118 if test x"$ld_is_gold" = xno; then
6119 if test $in_tree_ld = yes ; then
6120 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6121 ld_bndplt_support=yes
6123 elif test x$gcc_cv_ld != x; then
6124 # Check if linker supports -a bndplt option
6125 if $gcc_cv_ld --help 2>/dev/null | grep -- '-z bndplt' > /dev/null; then
6126 ld_bndplt_support=yes
6130 if test x"$ld_bndplt_support" = xyes; then
6131 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6132 [Define if your linker supports -z bndplt])
6134 AC_MSG_RESULT($ld_bndplt_support)
6136 # Configure the subdirectories
6137 # AC_CONFIG_SUBDIRS($subdirs)
6139 # Create the Makefile
6140 # and configure language subdirectories
6141 AC_CONFIG_FILES($all_outputs)
6143 AC_CONFIG_COMMANDS([default],
6145 case ${CONFIG_HEADERS} in
6146 *auto-host.h:config.in*)
6149 # Make sure all the subdirs exist.
6150 for d in $subdirs doc build common c-family
6152 test -d $d || mkdir $d
6155 [subdirs='$subdirs'])