2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2015 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 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
420 # If the host compiler is affected by the bug, and we build with optimization
421 # enabled (which happens e.g. when cross-compiling), the pool allocator may
422 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
423 # Since there is no reliable feature check for the presence of this bug,
424 # we simply use a GCC version number check. (This should never trigger for
425 # stages 2 or 3 of a native bootstrap.)
427 if test "$GCC" = yes; then
428 saved_CXXFLAGS="$CXXFLAGS"
430 # The following test compilation will succeed if and only if $CXX accepts
431 # -fno-strict-aliasing *and* is older than GCC 4.3.
432 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
433 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
435 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
436 #error compiler not affected by placement new aliasing bug
439 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
440 [AC_MSG_RESULT([no])])
442 CXXFLAGS="$saved_CXXFLAGS"
444 AC_SUBST(aliasing_flags)
448 # ---------------------
449 # Warnings and checking
450 # ---------------------
452 # Check $CC warning features (if it's GCC).
453 # We want to use -pedantic, but we don't want warnings about
457 # * C++11 narrowing conversions in { }
458 # So, we only use -pedantic if we can disable those warnings.
460 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
461 AC_ARG_ENABLE(build-format-warnings,
462 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
463 [],[enable_build_format_warnings=yes])
464 AS_IF([test $enable_build_format_warnings = no],
465 [wf_opt=-Wno-format],[wf_opt=])
466 ACX_PROG_CXX_WARNING_OPTS(
467 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual $wf_opt])), [loose_warn])
468 ACX_PROG_CC_WARNING_OPTS(
469 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
471 ACX_PROG_CXX_WARNING_OPTS(
472 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
473 ACX_PROG_CXX_WARNING_OPTS(
474 m4_quote(m4_do([-Woverloaded-virtual])), [strict_warn])
475 ACX_PROG_CC_WARNING_OPTS(
476 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
477 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
478 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
479 [-Wno-overlength-strings])), [strict_warn])
480 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
482 # The above macros do nothing if the compiler is not GCC. However, the
483 # Makefile has more goo to add other flags, so these variables are used
484 # to enable warnings only for GCC.
487 if test "x$GCC" = "xyes"; then
488 warn_cflags='$(GCC_WARN_CFLAGS)'
489 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
491 AC_SUBST(warn_cflags)
492 AC_SUBST(warn_cxxflags)
494 # Disable exceptions and RTTI if building with g++
495 ACX_PROG_CC_WARNING_OPTS(
496 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
499 # Enable expensive internal checks
501 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
505 AC_ARG_ENABLE(checking,
506 [AS_HELP_STRING([[--enable-checking[=LIST]]],
507 [enable expensive run-time checks. With LIST,
508 enable only specific categories of checks.
509 Categories are: yes,no,all,none,release.
510 Flags are: assert,df,fold,gc,gcac,gimple,misc,
511 rtlflag,rtl,runtime,tree,valgrind,types])],
512 [ac_checking_flags="${enableval}"],[
513 # Determine the default checks.
514 if test x$is_release = x ; then
515 ac_checking_flags=yes
517 ac_checking_flags=release
519 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
520 for check in release $ac_checking_flags
523 # these set all the flags to specific states
524 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
525 ac_fold_checking= ; ac_gc_checking=1 ;
526 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
527 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
528 ac_tree_checking=1 ; ac_valgrind_checking= ;
529 ac_types_checking=1 ;;
530 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
531 ac_fold_checking= ; ac_gc_checking= ;
532 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
533 ac_rtlflag_checking= ; ac_runtime_checking= ;
534 ac_tree_checking= ; ac_valgrind_checking= ;
535 ac_types_checking= ;;
536 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
537 ac_fold_checking=1 ; ac_gc_checking=1 ;
538 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
539 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
540 ac_tree_checking=1 ; ac_valgrind_checking= ;
541 ac_types_checking=1 ;;
542 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
543 ac_fold_checking= ; ac_gc_checking= ;
544 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
545 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
546 ac_tree_checking= ; ac_valgrind_checking= ;
547 ac_types_checking= ;;
548 # these enable particular checks
549 assert) ac_assert_checking=1 ;;
550 df) ac_df_checking=1 ;;
551 fold) ac_fold_checking=1 ;;
552 gc) ac_gc_checking=1 ;;
553 gcac) ac_gc_always_collect=1 ;;
554 gimple) ac_gimple_checking=1 ;;
555 misc) ac_checking=1 ;;
556 rtl) ac_rtl_checking=1 ;;
557 rtlflag) ac_rtlflag_checking=1 ;;
558 runtime) ac_runtime_checking=1 ;;
559 tree) ac_tree_checking=1 ;;
560 types) ac_types_checking=1 ;;
561 valgrind) ac_valgrind_checking=1 ;;
562 *) AC_MSG_ERROR(unknown check category $check) ;;
568 if test x$ac_checking != x ; then
569 AC_DEFINE(ENABLE_CHECKING, 1,
570 [Define if you want more run-time sanity checks. This one gets a grab
571 bag of miscellaneous but relatively cheap checks.])
572 nocommon_flag=-fno-common
574 AC_SUBST(nocommon_flag)
575 if test x$ac_df_checking != x ; then
576 AC_DEFINE(ENABLE_DF_CHECKING, 1,
577 [Define if you want more run-time sanity checks for dataflow.])
579 if test x$ac_assert_checking != x ; then
580 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
581 [Define if you want assertions enabled. This is a cheap check.])
583 if test x$ac_gimple_checking != x ; then
584 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
585 [Define if you want operations on GIMPLE (the basic data structure of
586 the high-level optimizers) to be checked for dynamic type safety at
587 runtime. This is moderately expensive.])
589 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
590 if test x$ac_runtime_checking != x ; then
591 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
592 [Define if you want runtime assertions enabled. This is a cheap check.])
594 if test x$ac_tree_checking != x ; then
595 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
596 [Define if you want all operations on trees (the basic data
597 structure of the front ends) to be checked for dynamic type safety
598 at runtime. This is moderately expensive.
602 if test x$ac_types_checking != x ; then
603 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
604 [Define if you want all gimple types to be verified after gimplifiation.
608 AC_SUBST(TREECHECKING)
609 if test x$ac_rtl_checking != x ; then
610 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
611 [Define if you want all operations on RTL (the basic data structure
612 of the optimizer and back end) to be checked for dynamic type safety
613 at runtime. This is quite expensive.])
615 if test x$ac_rtlflag_checking != x ; then
616 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
617 [Define if you want RTL flag accesses to be checked against the RTL
618 codes that are supported for each access macro. This is relatively
621 if test x$ac_gc_checking != x ; then
622 AC_DEFINE(ENABLE_GC_CHECKING, 1,
623 [Define if you want the garbage collector to do object poisoning and
624 other memory allocation checks. This is quite expensive.])
626 if test x$ac_gc_always_collect != x ; then
627 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
628 [Define if you want the garbage collector to operate in maximally
629 paranoid mode, validating the entire heap and collecting garbage at
630 every opportunity. This is extremely expensive.])
632 if test x$ac_fold_checking != x ; then
633 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
634 [Define if you want fold checked that it never destructs its argument.
635 This is quite expensive.])
637 valgrind_path_defines=
640 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
641 dnl # an if statement. This was the source of very frustrating bugs
642 dnl # in converting to autoconf 2.5x!
643 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
645 # It is certainly possible that there's valgrind but no valgrind.h.
646 # GCC relies on making annotations so we must have both.
647 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
648 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
649 [[#include <valgrind/memcheck.h>
650 #ifndef VALGRIND_DISCARD
651 #error VALGRIND_DISCARD not defined
653 [gcc_cv_header_valgrind_memcheck_h=yes],
654 [gcc_cv_header_valgrind_memcheck_h=no])
655 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
656 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
657 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
658 [[#include <memcheck.h>
659 #ifndef VALGRIND_DISCARD
660 #error VALGRIND_DISCARD not defined
662 [gcc_cv_header_memcheck_h=yes],
663 [gcc_cv_header_memcheck_h=no])
664 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
665 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
666 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
667 [Define if valgrind's valgrind/memcheck.h header is installed.])
669 if test $gcc_cv_header_memcheck_h = yes; then
670 AC_DEFINE(HAVE_MEMCHECK_H, 1,
671 [Define if valgrind's memcheck.h header is installed.])
674 if test x$ac_valgrind_checking != x ; then
675 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
676 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
677 if test "x$valgrind_path" = "x" \
678 || (test $have_valgrind_h = no \
679 && test $gcc_cv_header_memcheck_h = no \
680 && test $gcc_cv_header_valgrind_memcheck_h = no); then
681 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
683 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
684 valgrind_command="$valgrind_path -q"
685 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
686 [Define if you want to run subprograms and generated programs
687 through valgrind (a memory checker). This is extremely expensive.])
689 AC_SUBST(valgrind_path_defines)
690 AC_SUBST(valgrind_command)
692 # Enable code coverage collection
693 AC_ARG_ENABLE(coverage,
694 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
695 [enable compiler's code coverage collection.
696 Use to measure compiler performance and locate
697 unused parts of the compiler. With LEVEL, specify
698 optimization. Values are opt, noopt,
700 [case "${enableval}" in
702 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
705 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
708 # a.k.a. --disable-coverage
712 AC_MSG_ERROR(unknown coverage setting $enableval)
716 AC_SUBST(coverage_flags)
718 AC_ARG_ENABLE(gather-detailed-mem-stats,
719 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
720 [enable detailed memory allocation stats gathering])], [],
721 [enable_gather_detailed_mem_stats=no])
722 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
723 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
724 [Define to enable detailed memory allocation stats gathering.])
726 AC_ARG_ENABLE(valgrind-annotations,
727 [AS_HELP_STRING([--enable-valgrind-annotations],
728 [enable valgrind runtime interaction])], [],
729 [enable_valgrind_annotations=no])
730 if test x$enable_valgrind_annotations != xno \
731 || test x$ac_valgrind_checking != x; then
732 if (test $have_valgrind_h = no \
733 && test $gcc_cv_header_memcheck_h = no \
734 && test $gcc_cv_header_valgrind_memcheck_h = no); then
735 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
737 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
738 [Define to get calls to the valgrind runtime enabled.])
741 # -------------------------------
742 # Miscenalleous configure options
743 # -------------------------------
747 [AS_HELP_STRING([--with-stabs],
748 [arrange to use stabs instead of host debug format])],
752 # Determine whether or not multilibs are enabled.
753 AC_ARG_ENABLE(multilib,
754 [AS_HELP_STRING([--enable-multilib],
755 [enable library support for multiple ABIs])],
756 [], [enable_multilib=yes])
757 AC_SUBST(enable_multilib)
759 # Determine whether or not multiarch is enabled.
760 AC_ARG_ENABLE(multiarch,
761 [AS_HELP_STRING([--enable-multiarch],
762 [enable support for multiarch paths])],
763 [case "${enableval}" in
764 yes|no|auto) enable_multiarch=$enableval;;
765 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
766 esac], [enable_multiarch=auto])
767 if test x${enable_multiarch} = xauto; then
768 if test x${with_native_system_header_dir} != x; then
769 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
772 if test x$host != x$target && test "x$with_sysroot" = x; then
773 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
777 AC_MSG_CHECKING(for multiarch configuration)
778 AC_SUBST(enable_multiarch)
779 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
781 # needed for setting the multiarch name for soft-float/hard-float ABIs
785 # Enable __cxa_atexit for C++.
786 AC_ARG_ENABLE(__cxa_atexit,
787 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
790 # Enable C extension for decimal float if target supports it.
791 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
793 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
794 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
795 [Define to 1 to enable decimal float extension to C.])
797 # Use default_decimal_float for dependency.
798 enable_decimal_float=$default_decimal_float
800 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
801 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
802 [Define to 1 to specify that we are using the BID decimal floating
803 point format instead of DPD])
805 # Enable C extension for fixed-point arithmetic.
806 AC_ARG_ENABLE(fixed-point,
807 [AS_HELP_STRING([--enable-fixed-point],
808 [enable fixed-point arithmetic extension to C])],
813 enable_fixed_point=yes
817 enable_fixed_point=yes
820 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
821 enable_fixed_point=no
825 AC_SUBST(enable_fixed_point)
827 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
828 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
829 [Define to 1 to enable fixed-point arithmetic extension to C.])
832 # Pass with no value to take the default
833 # Pass with a value to specify a thread package
834 AC_ARG_ENABLE(threads,
835 [AS_HELP_STRING([[--enable-threads[=LIB]]],
836 [enable thread usage for target GCC,
837 using LIB thread package])],,
841 [AS_HELP_STRING([--enable-tls],
842 [enable or disable generation of tls code
843 overriding the assembler check for tls support])],
847 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
848 Valid choices are 'yes' and 'no'.]) ;;
852 AC_ARG_ENABLE(objc-gc,
853 [AS_HELP_STRING([--enable-objc-gc],
854 [enable the use of Boehm's garbage collector with
855 the GNU Objective-C runtime])],
856 if test x$enable_objc_gc = xno; then
864 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
865 dwarf2="$with_dwarf2",
868 AC_ARG_ENABLE(shared,
869 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
871 case $enable_shared in
875 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
876 for pkg in $enableval; do
877 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
884 ], [enable_shared=yes])
885 AC_SUBST(enable_shared)
888 [AS_HELP_STRING([--with-specs=SPECS],
889 [add SPECS to driver command-line processing])],
890 [CONFIGURE_SPECS=$withval],
893 AC_SUBST(CONFIGURE_SPECS)
895 ACX_PKGVERSION([GCC])
896 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
898 # Sanity check enable_languages in case someone does not run the toplevel
899 # configure # script.
900 AC_ARG_ENABLE(languages,
901 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
902 [case ,${enable_languages}, in
904 # go safe -- we cannot be much sure without the toplevel
906 # analysis of which target libs are present and usable
910 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
915 enable_languages=c,${enable_languages}
918 [enable_languages=c])
920 if test x"$enable_as_accelerator_for" != x; then
921 AC_DEFINE(ACCEL_COMPILER, 1,
922 [Define if this compiler should be built as the offload target compiler.])
923 enable_as_accelerator=yes
926 # In this case we expect offload compiler to be built as native, so we
927 # need to rename the driver to avoid clashes with host's drivers.
928 program_transform_name="s&^&${target}-&" ;;
930 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
931 program_transform_name=`echo $program_transform_name | sed $sedscript`
932 accel_dir_suffix=/accel/${target_noncanonical}
933 real_target_noncanonical=${enable_as_accelerator_for}
935 AC_SUBST(enable_as_accelerator)
936 AC_SUBST(real_target_noncanonical)
937 AC_SUBST(accel_dir_suffix)
939 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
940 tgt=`echo $tgt | sed 's/=.*//'`
941 if test x"$offload_targets" = x; then
944 offload_targets="$offload_targets:$tgt"
947 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
948 [Define to hold the list of target names suitable for offloading.])
949 if test x"$offload_targets" != x; then
950 AC_DEFINE(ENABLE_OFFLOADING, 1,
951 [Define this to enable support for offloading.])
954 AC_ARG_WITH(multilib-list,
955 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
957 with_multilib_list=default)
959 # -------------------------
960 # Checks for other programs
961 # -------------------------
965 # Find some useful tools
967 # We need awk to create options.c and options.h.
968 # Bail out if it's missing.
970 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
977 AC_SUBST(ranlib_flags)
981 # See if cmp has --ignore-initial.
982 gcc_AC_PROG_CMP_IGNORE_INITIAL
984 # See if we have the mktemp command.
985 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
987 # See if makeinfo has been installed and is modern enough
988 # that we can use it.
989 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
990 [GNU texinfo.* \([0-9][0-9.]*\)],
991 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
992 if test $gcc_cv_prog_makeinfo_modern = no; then
994 *** Makeinfo is missing or too old.
995 *** Info documentation will not be built.])
1000 AC_SUBST(BUILD_INFO)
1002 # Is pod2man recent enough to regenerate manpages?
1003 AC_MSG_CHECKING([for recent Pod::Man])
1004 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1006 GENERATED_MANPAGES=generated-manpages
1011 AC_SUBST(GENERATED_MANPAGES)
1013 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1016 dnl Don't use AC_PROG_LEX; we insist on flex.
1017 dnl LEXLIB is not useful in gcc.
1018 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1021 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1023 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1024 # check for build == host before using them.
1027 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1028 && test -d ../binutils ; then
1029 NM='${objdir}/../binutils/nm-new'
1031 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1035 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1036 && test -d ../binutils ; then
1037 AR='${objdir}/../binutils/ar'
1039 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1042 # The jit documentation looks better if built with sphinx, but can be
1043 # built with texinfo if sphinx is not available.
1044 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1045 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1047 # --------------------
1048 # Checks for C headers
1049 # --------------------
1051 # Need to reject headers which give warnings, so that the -Werror bootstrap
1052 # works later. *sigh* This needs to come before all header checks.
1059 AC_HEADER_TIOCGWINSZ
1060 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1061 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1062 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1063 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1065 # Check for thread headers.
1066 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1067 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1069 # These tests can't be done till we know if we have limits.h.
1073 # ----------------------
1074 # Checks for C++ headers
1075 # ----------------------
1077 dnl Autoconf will give an error in the configure script if there is no
1078 dnl C++ preprocessor. Hack to prevent that.
1079 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1081 m4_popdef([AC_MSG_ERROR])[]dnl
1083 AC_CHECK_HEADERS(unordered_map)
1084 AC_CHECK_HEADERS(tr1/unordered_map)
1085 AC_CHECK_HEADERS(ext/hash_map)
1088 # Dependency checking.
1092 AC_CONFIG_COMMANDS([gccdepdir],[
1093 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1094 for lang in $subdirs c-family common
1096 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1097 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1099 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1106 # These libraries may be used by collect2.
1107 # We may need a special search path to get them linked.
1108 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1110 for libs in '' -lld -lmld \
1111 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1112 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1115 AC_TRY_LINK_FUNC(ldopen,
1116 [gcc_cv_collect2_libs="$libs"; break])
1119 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1120 case $gcc_cv_collect2_libs in
1122 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1124 AC_SUBST(COLLECT2_LIBS)
1126 # When building Ada code on Alpha, we need exc_resume which is usually in
1127 # -lexc. So test for it.
1130 AC_SEARCH_LIBS(exc_resume, exc)
1133 AC_SUBST(GNAT_LIBEXC)
1135 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1138 AC_SEARCH_LIBS(kstat_open, kstat)
1139 EXTRA_GCC_LIBS="$LIBS"
1141 AC_SUBST(EXTRA_GCC_LIBS)
1143 # Some systems put ldexp and frexp in libm instead of libc; assume
1144 # they're both in the same place. jcf-dump needs them.
1147 AC_SEARCH_LIBS(ldexp, m)
1152 # Use <inttypes.h> only if it exists,
1153 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1155 AC_MSG_CHECKING(for inttypes.h)
1156 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1157 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1158 [[#define __STDC_FORMAT_MACROS
1159 #include <sys/types.h>
1160 #include <inttypes.h>]],
1165 [gcc_cv_header_inttypes_h=yes],
1166 [gcc_cv_header_inttypes_h=no])])
1167 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1168 if test $gcc_cv_header_inttypes_h = yes; then
1169 AC_DEFINE(HAVE_INTTYPES_H, 1,
1170 [Define if you have a working <inttypes.h> header file.])
1173 dnl Disabled until we have a complete test for buggy enum bitfields.
1174 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1176 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1177 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1178 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1179 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1180 putchar_unlocked putc_unlocked)
1181 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1182 popen sysconf strsignal getrusage nl_langinfo \
1183 gettimeofday mbstowcs wcswidth mmap setlocale \
1184 gcc_UNLOCKED_FUNCS madvise)
1186 if test x$ac_cv_func_mbstowcs = xyes; then
1187 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1188 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1194 [gcc_cv_func_mbstowcs_works=yes],
1195 [gcc_cv_func_mbstowcs_works=no],
1196 [gcc_cv_func_mbstowcs_works=yes])])
1197 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1198 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1199 [Define this macro if mbstowcs does not crash when its
1200 first argument is NULL.])
1204 AC_CHECK_TYPE(ssize_t, int)
1205 AC_CHECK_TYPE(caddr_t, char *)
1207 GCC_AC_FUNC_MMAP_BLACKLIST
1211 # Under VMS, vfork works very differently than on Unix. The standard test
1212 # won't work, and it isn't easily adaptable. It makes more sense to
1214 ac_cv_func_vfork_works=yes
1221 # Until we have in-tree GNU iconv:
1223 if test -f "$LTLIBICONV"; then
1224 LIBICONV_DEP=$LTLIBICONV
1226 AC_SUBST(LIBICONV_DEP)
1232 # We will need to find libiberty.h and ansidecl.h
1233 saved_CFLAGS="$CFLAGS"
1234 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1235 saved_CXXFLAGS="$CXXFLAGS"
1236 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1238 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1239 # normal autoconf function for these. But force definition of
1240 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1241 # basename handling in libiberty.h.
1242 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1243 #undef HAVE_DECL_BASENAME
1244 #define HAVE_DECL_BASENAME 1
1245 #include "ansidecl.h"
1246 #include "system.h"])
1248 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1249 madvise stpcpy strnlen strsignal strverscmp \
1250 strtol strtoul strtoll strtoull \
1251 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1252 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1253 #include "ansidecl.h"
1254 #include "system.h"])
1256 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1257 #include "ansidecl.h"
1259 #ifdef HAVE_SYS_RESOURCE_H
1260 #include <sys/resource.h>
1264 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1265 #include "ansidecl.h"
1267 #ifdef HAVE_SYS_RESOURCE_H
1268 #include <sys/resource.h>
1270 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1271 [Define to `long' if <sys/resource.h> doesn't define.])])
1273 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1274 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1275 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1276 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1277 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1278 #include "ansidecl.h"
1287 gcc_AC_CHECK_DECLS(times, , ,[
1288 #include "ansidecl.h"
1290 #ifdef HAVE_SYS_TIMES_H
1291 #include <sys/times.h>
1295 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1296 #include "ansidecl.h"
1301 # More time-related stuff.
1302 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1303 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1304 #include "ansidecl.h"
1306 #ifdef HAVE_SYS_TIMES_H
1307 #include <sys/times.h>
1309 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1310 if test $ac_cv_struct_tms = yes; then
1311 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1312 [Define if <sys/times.h> defines struct tms.])
1315 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1316 # revisit after autoconf 2.50.
1317 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1318 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1319 #include "ansidecl.h"
1321 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1322 if test $gcc_cv_type_clock_t = yes; then
1323 AC_DEFINE(HAVE_CLOCK_T, 1,
1324 [Define if <time.h> defines clock_t.])
1327 # Check if F_SETLKW is supported by fcntl.
1328 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1329 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1330 #include <fcntl.h>]], [[
1336 return fcntl (1, F_SETLKW, &fl);]])],
1337 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1338 if test $ac_cv_f_setlkw = yes; then
1339 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1340 [Define if F_SETLKW supported by fcntl.])
1343 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1344 CFLAGS="$saved_CFLAGS"
1345 CXXFLAGS="$saved_CXXFLAGS"
1347 # mkdir takes a single argument on some systems.
1348 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1356 # With Setjmp/Longjmp based exception handling.
1357 AC_ARG_ENABLE(sjlj-exceptions,
1358 [AS_HELP_STRING([--enable-sjlj-exceptions],
1359 [arrange to use setjmp/longjmp exception handling])],
1362 if test $enableval != yes; then
1363 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1368 force_sjlj_exceptions=yes],
1371 force_sjlj_exceptions=yes
1375 force_sjlj_exceptions=yes
1379 force_sjlj_exceptions=no
1382 if test $force_sjlj_exceptions = yes; then
1383 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1384 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1385 [Define 0/1 to force the choice for exception handling model.])
1388 # --------------------------------------------------------
1389 # Build, host, and target specific configuration fragments
1390 # --------------------------------------------------------
1392 # Collect build-machine-specific information.
1393 . ${srcdir}/config.build
1395 # Collect host-machine-specific information.
1396 . ${srcdir}/config.host
1400 # Collect target-machine-specific information.
1401 . ${srcdir}/config.gcc
1403 extra_objs="${host_extra_objs} ${extra_objs}"
1404 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1406 # Default the target-machine variables that were not explicitly set.
1407 if test x"$tm_file" = x
1408 then tm_file=$cpu_type/$cpu_type.h; fi
1410 if test x"$extra_headers" = x
1411 then extra_headers=; fi
1413 if test x$md_file = x
1414 then md_file=$cpu_type/$cpu_type.md; fi
1416 if test x$out_file = x
1417 then out_file=$cpu_type/$cpu_type.c; fi
1419 if test x"$tmake_file" = x
1420 then tmake_file=$cpu_type/t-$cpu_type
1423 # Support --enable-initfini-array.
1424 if test x$enable_initfini_array != xno; then
1425 tm_file="${tm_file} initfini-array.h"
1428 if test x"$dwarf2" = xyes
1429 then tm_file="$tm_file tm-dwarf2.h"
1432 # Say what files are being used for the output code and MD file.
1433 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1434 echo "Using \`$srcdir/config/$md_file' as machine description file."
1436 # If any of the xm_file variables contain nonexistent files, warn
1437 # about them and drop them.
1440 for x in $build_xm_file; do
1441 if test -f $srcdir/config/$x
1443 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1449 for x in $host_xm_file; do
1450 if test -f $srcdir/config/$x
1452 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1458 for x in $xm_file; do
1459 if test -f $srcdir/config/$x
1461 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1467 for f in $tm_file; do
1470 if test $count = ax; then
1471 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1473 echo "Using the following target machine macro files:"
1474 for f in $tm_file; do
1475 echo " $srcdir/config/$f"
1479 if test x$use_long_long_for_widest_fast_int = xyes; then
1480 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1481 [Define to 1 if the 'long long' type is wider than 'long' but still
1482 efficiently supported by the host hardware.])
1485 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1486 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1488 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1489 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1492 for f in $host_xm_file; do
1495 if test $count = a; then
1497 elif test $count = ax; then
1498 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1500 echo "Using the following host machine macro files:"
1501 for f in $host_xm_file; do
1502 echo " $srcdir/config/$f"
1505 echo "Using ${out_host_hook_obj} for host machine hooks."
1507 if test "$host_xm_file" != "$build_xm_file"; then
1509 for f in $build_xm_file; do
1512 if test $count = a; then
1514 elif test $count = ax; then
1515 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1517 echo "Using the following build machine macro files:"
1518 for f in $build_xm_file; do
1519 echo " $srcdir/config/$f"
1524 if test -n "$configured_native_system_header_dir"; then
1525 native_system_header_dir=$configured_native_system_header_dir
1527 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1528 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1532 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1533 gcc_cv_mcontext_underscores,
1535 #include <sys/cdefs.h>
1536 #include <sys/signal.h>
1537 #include <ucontext.h>
1538 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1540 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1541 if test $gcc_cv_mcontext_underscores = yes; then
1542 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1543 [mcontext_t fields start with __])
1552 # Check if a valid thread package
1553 case ${enable_threads} in
1556 target_thread_file='single'
1560 target_thread_file='single'
1562 aix | dce | lynx | mipssde | posix | rtems | \
1563 single | tpf | vxworks | win32)
1564 target_thread_file=${enable_threads}
1567 echo "${enable_threads} is an unknown thread package" 1>&2
1572 if test x${thread_file} = x; then
1573 # No thread file set by target-specific clauses in config.gcc,
1574 # so use file chosen by default logic above
1575 thread_file=${target_thread_file}
1583 if test x$enable___cxa_atexit = xyes || \
1584 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1585 if test x$host = x$target; then
1587 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1588 # keyed to flag_use_cxa_atexit
1596 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1597 [echo "__cxa_atexit can't be enabled on this target"])
1601 # We can't check for __cxa_atexit when building a cross, so assume
1605 if test x$use_cxa_atexit = xyes; then
1606 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1607 [Define if you want to use __cxa_atexit, rather than atexit, to
1608 register C++ destructors for local statics and global objects.
1609 This is essential for fully standards-compliant handling of
1610 destructors, but requires __cxa_atexit in libc.])
1614 # Look for a file containing extra machine modes.
1615 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1616 extra_modes_file='$(srcdir)'/config/${extra_modes}
1617 AC_SUBST(extra_modes_file)
1618 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1619 [Define to the name of a file containing a list of extra machine modes
1620 for this architecture.])
1623 # Convert extra_options into a form suitable for Makefile use.
1626 for f in $extra_options; do
1627 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1628 all_opt_files="$all_opt_files $srcdir/config/$f"
1630 AC_SUBST(extra_opt_files)
1632 # auto-host.h is the file containing items generated by autoconf and is
1633 # the first file included by config.h.
1634 # If host=build, it is correct to have bconfig include auto-host.h
1635 # as well. If host!=build, we are in error and need to do more
1636 # work to find out the build config parameters.
1637 if test x$host = x$build
1639 build_auto=auto-host.h
1641 # We create a subdir, then run autoconf in the subdir.
1642 # To prevent recursion we set host and build for the new
1643 # invocation of configure to the build for this invocation
1650 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1651 *) realsrcdir=../${srcdir};;
1653 # Clearing GMPINC is necessary to prevent host headers being
1654 # used by the build compiler. Defining GENERATOR_FILE stops
1655 # system.h from including gmp.h.
1656 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1657 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1658 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1659 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1660 ${realsrcdir}/configure \
1661 --enable-languages=${enable_languages-all} \
1662 --target=$target_alias --host=$build_alias --build=$build_alias
1664 # We just finished tests for the build machine, so rename
1665 # the file auto-build.h in the gcc directory.
1666 mv auto-host.h ../auto-build.h
1669 build_auto=auto-build.h
1671 AC_SUBST(build_subdir)
1673 tm_file="${tm_file} defaults.h"
1674 tm_p_file="${tm_p_file} tm-preds.h"
1675 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1676 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1677 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1678 # put this back in temporarily.
1679 xm_file="auto-host.h ansidecl.h ${xm_file}"
1686 # Compile in configure arguments.
1687 if test -f configargs.h ; then
1688 # Being re-configured.
1689 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1690 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1692 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1695 # Double all backslashes and backslash all quotes to turn
1696 # gcc_config_arguments into a C string.
1697 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1698 $gcc_config_arguments
1700 gcc_config_arguments_str=`cat conftest.out`
1703 cat > configargs.h <<EOF
1704 /* Generated automatically. */
1705 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1706 static const char thread_model[] = "$thread_file";
1708 static const struct {
1709 const char *name, *value;
1710 } configure_default_options[] = $configure_default_options;
1715 gcc_BASEVER=`cat $srcdir/BASE-VER`
1716 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1717 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1718 if test -f $srcdir/REVISION ; then
1719 gcc_REVISION=`cat $srcdir/REVISION`
1723 cat > plugin-version.h <<EOF
1724 #include "configargs.h"
1726 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1727 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1728 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1729 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1731 static char basever[] = "$gcc_BASEVER";
1732 static char datestamp[] = "$gcc_DATESTAMP";
1733 static char devphase[] = "$gcc_DEVPHASE";
1734 static char revision[] = "$gcc_REVISION";
1736 /* FIXME plugins: We should make the version information more precise.
1737 One way to do is to add a checksum. */
1739 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1741 configuration_arguments};
1745 # Internationalization
1746 ZW_GNU_GETTEXT_SISTER_DIR
1748 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1749 # -liconv on the link line twice.
1750 case "$LIBINTL" in *$LIBICONV*)
1754 AC_ARG_ENABLE(secureplt,
1755 [AS_HELP_STRING([--enable-secureplt],
1756 [enable -msecure-plt by default for PowerPC])],
1759 AC_ARG_ENABLE(leading-mingw64-underscores,
1760 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1761 [enable leading underscores on 64 bit mingw targets]),
1763 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1764 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1765 [Define if we should use leading underscore on 64 bit mingw targets])])
1768 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1771 AC_ARG_ENABLE(frame-pointer,
1772 [AS_HELP_STRING([--enable-frame-pointer],
1773 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1776 linux* | darwin[[8912]]*)
1777 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1779 enable_frame_pointer=no
1782 enable_frame_pointer=yes
1787 # Windows32 Registry support for specifying GCC installation paths.
1788 AC_ARG_ENABLE(win32-registry,
1789 [AS_HELP_STRING([--disable-win32-registry],
1790 [disable lookup of installation paths in the
1791 Registry on Windows hosts])
1792 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1793 AS_HELP_STRING([--enable-win32-registry=KEY],
1794 [use KEY instead of GCC version as the last portion
1795 of the registry key])],,)
1798 win32 | pe | cygwin* | mingw32*)
1799 if test "x$enable_win32_registry" != xno; then
1800 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1803 if test "x$enable_win32_registry" != xno; then
1804 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1805 [Define to 1 if installation paths should be looked up in the Windows
1806 Registry. Ignored on non-Windows hosts.])
1808 if test "x$enable_win32_registry" != xyes \
1809 && test "x$enable_win32_registry" != x; then
1810 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1811 [Define to be the last component of the Windows registry key under which
1812 to look for installation paths. The full key used will be
1813 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1814 The default is the GCC version number.])
1820 # Get an absolute path to the GCC top-level source directory
1821 holddir=`${PWDCMD-pwd}`
1823 topdir=`${PWDCMD-pwd}`
1826 # Conditionalize the makefile for this host machine.
1828 for f in ${host_xmake_file}
1830 if test -f ${srcdir}/config/$f
1832 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1836 # Conditionalize the makefile for this target machine.
1838 for f in ${tmake_file}
1840 if test -f ${srcdir}/config/$f
1842 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1845 tmake_file="${tmake_file_}"
1847 out_object_file=`basename $out_file .c`.o
1848 common_out_object_file=`basename $common_out_file .c`.o
1850 tm_file_list="options.h"
1851 tm_include_list="options.h insn-constants.h"
1852 for f in $tm_file; do
1855 f=`echo $f | sed 's/^..//'`
1856 tm_file_list="${tm_file_list} $f"
1857 tm_include_list="${tm_include_list} $f"
1860 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1861 tm_include_list="${tm_include_list} $f"
1864 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1865 tm_include_list="${tm_include_list} config/$f"
1872 for f in $tm_p_file; do
1875 tm_p_file_list="${tm_p_file_list} $f"
1876 tm_p_include_list="${tm_p_include_list} $f"
1879 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1880 tm_p_include_list="${tm_p_include_list} config/$f"
1886 for f in $xm_file; do
1889 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1890 xm_include_list="${xm_include_list} $f"
1893 xm_file_list="${xm_file_list} $f"
1894 xm_include_list="${xm_include_list} $f"
1897 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1898 xm_include_list="${xm_include_list} config/$f"
1904 host_xm_include_list=
1905 for f in $host_xm_file; do
1908 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1909 host_xm_include_list="${host_xm_include_list} $f"
1912 host_xm_file_list="${host_xm_file_list} $f"
1913 host_xm_include_list="${host_xm_include_list} $f"
1916 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1917 host_xm_include_list="${host_xm_include_list} config/$f"
1923 for f in $build_xm_file; do
1926 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1927 build_xm_include_list="${build_xm_include_list} $f"
1929 auto-build.h | auto-host.h )
1930 build_xm_file_list="${build_xm_file_list} $f"
1931 build_xm_include_list="${build_xm_include_list} $f"
1934 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1935 build_xm_include_list="${build_xm_include_list} config/$f"
1940 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1941 # cross-compiler which does not use the native headers and libraries.
1942 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1943 CROSS= AC_SUBST(CROSS)
1944 ALL=all.internal AC_SUBST(ALL)
1945 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1947 if test "x$with_build_sysroot" != x; then
1948 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1950 # This value is used, even on a native system, because
1951 # CROSS_SYSTEM_HEADER_DIR is just
1952 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1953 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1956 if test x$host != x$target
1958 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1960 SYSTEM_HEADER_DIR=$build_system_header_dir
1961 case "$host","$target" in
1962 # Darwin crosses can use the host system's libraries and headers,
1963 # because of the fat library support. Of course, it must be the
1964 # same version of Darwin on both sides. Allow the user to
1965 # just say --target=foo-darwin without a version number to mean
1966 # "the version on this system".
1967 *-*-darwin*,*-*-darwin*)
1968 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1969 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1970 if test $hostos = $targetos -o $targetos = darwin ; then
1972 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1977 i?86-*-*,x86_64-*-* \
1978 | powerpc*-*-*,powerpc64*-*-*)
1979 CROSS="$CROSS -DNATIVE_CROSS" ;;
1984 if test "x$with_headers" = x; then
1991 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1992 SYSTEM_HEADER_DIR=$build_system_header_dir
1995 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
1996 if test "x$with_headers" != x; then
1997 target_header_dir=$with_headers
1998 elif test "x$with_sysroot" = x; then
1999 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2000 elif test "x$with_build_sysroot" != "x"; then
2001 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2002 elif test "x$with_sysroot" = xyes; then
2003 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2005 target_header_dir="${with_sysroot}${native_system_header_dir}"
2008 target_header_dir=${native_system_header_dir}
2011 # If this is a cross-compiler that does not
2012 # have its own set of headers then define
2015 # If this is using newlib, without having the headers available now,
2016 # then define inhibit_libc in LIBGCC2_CFLAGS.
2017 # This prevents libgcc2 from containing any code which requires libc
2019 : ${inhibit_libc=false}
2020 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2021 test x$with_newlib = xyes ; } &&
2022 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2025 AC_SUBST(inhibit_libc)
2027 # When building gcc with a cross-compiler, we need to adjust things so
2028 # that the generator programs are still built with the native compiler.
2029 # Also, we cannot run fixincludes.
2031 # These are the normal (build=host) settings:
2032 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2033 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2034 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2035 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2036 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2037 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2039 # And these apply if build != host, or we are generating coverage data
2040 if test x$build != x$host || test "x$coverage_flags" != x
2042 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2043 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2044 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2047 # Expand extra_headers to include complete path.
2048 # This substitutes for lots of t-* files.
2050 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2051 for file in ${extra_headers} ; do
2052 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2055 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2056 if test x"$use_gcc_tgmath" = xyes
2057 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2060 # Define collect2 in Makefile.
2061 case $host_can_use_collect2 in
2063 *) collect2='collect2$(exeext)' ;;
2065 AC_SUBST([collect2])
2067 # Add a definition of USE_COLLECT2 if system wants one.
2068 case $use_collect2 in
2069 no) use_collect2= ;;
2072 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2073 xm_defines="${xm_defines} USE_COLLECT2"
2074 case $host_can_use_collect2 in
2076 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2082 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2083 [Define to the name of the LTO plugin DSO that must be
2084 passed to the linker's -plugin=LIB option.])
2086 # ---------------------------
2087 # Assembler & linker features
2088 # ---------------------------
2090 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2091 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2092 # However when ld-new is first executed from the build tree, libtool will
2093 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2094 # to the build tree. While doing this we need to use the previous-stage
2095 # linker, or we have an infinite loop. The presence of a shell script as
2096 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2097 # the gcc/collect-ld script. So we need to know how libtool works, or
2098 # exec-tool will fail.
2100 m4_defun([_LT_CONFIG_COMMANDS], [])
2103 AC_SUBST(enable_fast_install)
2105 # Identify the assembler which will work hand-in-glove with the newly
2106 # built GCC, so that we can examine its features. This is the assembler
2107 # which will be driven by the driver program.
2109 # If build != host, and we aren't building gas in-tree, we identify a
2110 # build->target assembler and hope that it will have the same features
2111 # as the host->target assembler we'll be using.
2112 gcc_cv_gas_major_version=
2113 gcc_cv_gas_minor_version=
2114 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2116 m4_pattern_allow([AS_FOR_TARGET])dnl
2117 AS_VAR_SET_IF(gcc_cv_as,, [
2118 if test -x "$DEFAULT_ASSEMBLER"; then
2119 gcc_cv_as="$DEFAULT_ASSEMBLER"
2120 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2121 && test -f ../gas/Makefile \
2122 && test x$build = x$host; then
2123 gcc_cv_as=../gas/as-new$build_exeext
2124 elif test -x as$build_exeext; then
2125 # Build using assembler in the current directory.
2126 gcc_cv_as=./as$build_exeext
2127 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2128 gcc_cv_as="$AS_FOR_TARGET"
2130 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2133 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2134 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2135 case "$ORIGINAL_AS_FOR_TARGET" in
2136 ./as | ./as$build_exeext) ;;
2137 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2140 AC_MSG_CHECKING(what assembler to use)
2141 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2142 # Single tree build which includes gas. We want to prefer it
2143 # over whatever linker top-level may have detected, since
2144 # we'll use what we're building after installation anyway.
2145 AC_MSG_RESULT(newly built gas)
2147 _gcc_COMPUTE_GAS_VERSION
2148 in_tree_gas_is_elf=no
2149 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2150 || (grep 'obj_format = multi' ../gas/Makefile \
2151 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2153 in_tree_gas_is_elf=yes
2156 AC_MSG_RESULT($gcc_cv_as)
2162 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2163 [case "${enableval}" in
2169 install_gold_as_default=no
2171 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2172 [case "${enableval}" in
2174 install_gold_as_default=yes
2177 if test x${default_ld} != x; then
2178 install_gold_as_default=yes
2184 AC_MSG_ERROR([invalid --enable-gold argument])
2188 # Identify the linker which will work hand-in-glove with the newly
2189 # built GCC, so that we can examine its features. This is the linker
2190 # which will be driven by the driver program.
2192 # If build != host, and we aren't building gas in-tree, we identify a
2193 # build->target linker and hope that it will have the same features
2194 # as the host->target linker we'll be using.
2195 gcc_cv_gld_major_version=
2196 gcc_cv_gld_minor_version=
2197 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2198 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2199 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2201 AS_VAR_SET_IF(gcc_cv_ld,, [
2202 if test -x "$DEFAULT_LINKER"; then
2203 gcc_cv_ld="$DEFAULT_LINKER"
2204 elif test $install_gold_as_default = yes \
2205 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2206 && test -f ../gold/Makefile \
2207 && test x$build = x$host; then
2208 gcc_cv_ld=../gold/ld-new$build_exeext
2209 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2210 && test -f ../ld/Makefile \
2211 && test x$build = x$host; then
2212 gcc_cv_ld=../ld/ld-new$build_exeext
2213 elif test -x collect-ld$build_exeext; then
2214 # Build using linker in the current directory.
2215 gcc_cv_ld=./collect-ld$build_exeext
2216 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2217 gcc_cv_ld="$LD_FOR_TARGET"
2219 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2222 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2223 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2224 # if the PLUGIN_LD is set ld-new, just have it as ld
2225 # as that is the installed named.
2226 if test x$PLUGIN_LD_SUFFIX = xld-new \
2227 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2230 AC_ARG_WITH(plugin-ld,
2231 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2232 [if test x"$withval" != x; then
2233 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2234 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2236 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2237 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2239 # Check to see if we are using gold instead of ld
2240 AC_MSG_CHECKING(whether we are using gold)
2242 if test x$gcc_cv_ld != x; then
2243 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2244 | grep "GNU gold" > /dev/null; then
2248 AC_MSG_RESULT($ld_is_gold)
2250 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2251 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2252 case "$ORIGINAL_LD_FOR_TARGET" in
2253 ./collect-ld | ./collect-ld$build_exeext) ;;
2254 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2257 AC_MSG_CHECKING(what linker to use)
2258 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2259 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2260 # Single tree build which includes ld. We want to prefer it
2261 # over whatever linker top-level may have detected, since
2262 # we'll use what we're building after installation anyway.
2263 AC_MSG_RESULT(newly built ld)
2265 in_tree_ld_is_elf=no
2266 if (grep 'EMUL = .*elf' ../ld/Makefile \
2267 || grep 'EMUL = .*linux' ../ld/Makefile \
2268 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2269 in_tree_ld_is_elf=yes
2270 elif test "$ld_is_gold" = yes; then
2271 in_tree_ld_is_elf=yes
2273 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
2276 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2277 if test x$gcc_cv_gld_version != x; then
2281 case $gcc_cv_gld_version in
2284 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2287 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2288 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2290 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2291 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2293 AC_MSG_RESULT($gcc_cv_ld)
2295 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2296 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2297 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2300 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2301 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2303 # Figure out what nm we will be using.
2304 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2305 AS_VAR_SET_IF(gcc_cv_nm,, [
2306 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2307 && test -f ../binutils/Makefile \
2308 && test x$build = x$host; then
2309 gcc_cv_nm=../binutils/nm-new$build_exeext
2310 elif test -x nm$build_exeext; then
2311 gcc_cv_nm=./nm$build_exeext
2312 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2313 gcc_cv_nm="$NM_FOR_TARGET"
2315 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2318 AC_MSG_CHECKING(what nm to use)
2319 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2320 # Single tree build which includes binutils.
2321 AC_MSG_RESULT(newly built nm)
2324 AC_MSG_RESULT($gcc_cv_nm)
2328 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2329 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2330 case "$ORIGINAL_NM_FOR_TARGET" in
2331 ./nm | ./nm$build_exeext) ;;
2332 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2336 # Figure out what objdump we will be using.
2337 AS_VAR_SET_IF(gcc_cv_objdump,, [
2338 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2339 && test -f ../binutils/Makefile \
2340 && test x$build = x$host; then
2341 # Single tree build which includes binutils.
2342 gcc_cv_objdump=../binutils/objdump$build_exeext
2343 elif test -x objdump$build_exeext; then
2344 gcc_cv_objdump=./objdump$build_exeext
2345 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2346 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2348 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2351 AC_MSG_CHECKING(what objdump to use)
2352 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2353 # Single tree build which includes binutils.
2354 AC_MSG_RESULT(newly built objdump)
2355 elif test x$gcc_cv_objdump = x; then
2356 AC_MSG_RESULT(not found)
2358 AC_MSG_RESULT($gcc_cv_objdump)
2361 # Figure out what readelf we will be using.
2362 AS_VAR_SET_IF(gcc_cv_readelf,, [
2363 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2364 && test -f ../binutils/Makefile \
2365 && test x$build = x$host; then
2366 # Single tree build which includes binutils.
2367 gcc_cv_readelf=../binutils/readelf$build_exeext
2368 elif test -x readelf$build_exeext; then
2369 gcc_cv_readelf=./readelf$build_exeext
2370 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2371 gcc_cv_readelf="$READELF_FOR_TARGET"
2373 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2376 AC_MSG_CHECKING(what readelf to use)
2377 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2378 # Single tree build which includes binutils.
2379 AC_MSG_RESULT(newly built readelf)
2380 elif test x$gcc_cv_readelf = x; then
2381 AC_MSG_RESULT(not found)
2383 AC_MSG_RESULT($gcc_cv_readelf)
2386 # Figure out what assembler alignment features are present.
2387 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2391 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2392 [Define if your assembler supports .balign and .p2align.])])
2394 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2397 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2398 [Define if your assembler supports specifying the maximum number
2399 of bytes to skip when using the GAS .p2align command.])])
2401 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2404 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2405 [Define if your assembler supports .literal16.])])
2407 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2409 [conftest_label1: .word 0
2411 conftest_label2: .word 0
2413 [if test x$gcc_cv_nm != x; then
2414 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2415 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2416 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2418 else gcc_cv_as_subsection_m1=yes
2420 rm -f conftest.nm1 conftest.nm2
2422 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2423 [Define if your assembler supports .subsection and .subsection -1 starts
2424 emitting at the beginning of your section.])])
2426 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2429 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2431 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2433 [ .weakref foobar, barfnot],,
2434 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2436 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2439 .NSUBSPA $CODE$,COMDAT],,
2440 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2442 # .hidden needs to be supported in both the assembler and the linker,
2443 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2444 # This is irritatingly difficult to feature test for; we have to check the
2445 # date string after the version number. If we've got an in-tree
2446 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2448 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2449 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2455 # Darwin as has some visibility support, though with a different syntax.
2456 gcc_cv_as_hidden=yes
2460 # gnu_indirect_function type is an extension proposed at
2461 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2462 # selection of function implementation
2463 AC_ARG_ENABLE(gnu-indirect-function,
2464 [AS_HELP_STRING([--enable-gnu-indirect-function],
2465 [enable the use of the @gnu_indirect_function to glibc systems])],
2466 [case $enable_gnu_indirect_function in
2468 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2469 Valid choices are 'yes' and 'no'.]) ;;
2471 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2473 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2474 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2475 [Define if your system supports gnu indirect functions.])
2479 if test $in_tree_ld != yes ; then
2480 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2481 if echo "$ld_ver" | grep GNU > /dev/null; then
2482 if test x"$ld_is_gold" = xyes; then
2483 # GNU gold --version looks like this:
2485 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2487 # We extract the binutils version which is more familiar and specific
2488 # than the gold version.
2489 ld_vers=`echo $ld_ver | sed -n \
2490 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2492 # GNU ld --version looks like this:
2494 # GNU ld (GNU Binutils) 2.21.51.20110225
2495 ld_vers=`echo $ld_ver | sed -n \
2496 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2498 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2499 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2500 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2501 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2505 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2508 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2509 # /usr/ccs/bin/ld has been configured.
2510 ld_ver=`$gcc_cv_ld -V 2>&1`
2511 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2512 ld_vers=`echo $ld_ver | sed -n \
2513 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2514 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2515 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2523 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2524 [[if test $in_tree_ld = yes ; then
2526 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2527 && test $in_tree_ld_is_elf = yes; then
2528 gcc_cv_ld_hidden=yes
2531 gcc_cv_ld_hidden=yes
2532 if test x"$ld_is_gold" = xyes; then
2534 elif echo "$ld_ver" | grep GNU > /dev/null; then
2536 mmix-knuth-mmixware)
2537 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2541 if test 0"$ld_date" -lt 20020404; then
2542 if test -n "$ld_date"; then
2543 # If there was date string, but was earlier than 2002-04-04, fail
2545 elif test -z "$ld_vers"; then
2546 # If there was no date string nor ld version number, something is wrong
2549 test -z "$ld_vers_patch" && ld_vers_patch=0
2550 if test "$ld_vers_major" -lt 2; then
2552 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2553 gcc_cv_ld_hidden="no"
2554 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2562 # Darwin ld has some visibility support.
2563 gcc_cv_ld_hidden=yes
2565 hppa64*-*-hpux* | ia64*-*-hpux*)
2566 gcc_cv_ld_hidden=yes
2568 *-*-solaris2.1[0-9]*)
2569 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2570 # .symbolic was only added in Solaris 9 12/02.
2571 gcc_cv_ld_hidden=yes
2579 libgcc_visibility=no
2580 AC_SUBST(libgcc_visibility)
2581 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2582 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2583 libgcc_visibility=yes
2584 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2585 [Define if your assembler and linker support .hidden.])
2588 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2589 gcc_cv_ld_ro_rw_mix=unknown
2590 if test $in_tree_ld = yes ; then
2591 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2592 && test $in_tree_ld_is_elf = yes; then
2593 gcc_cv_ld_ro_rw_mix=read-write
2595 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2596 echo '.section myfoosect, "a"' > conftest1.s
2597 echo '.section myfoosect, "aw"' > conftest2.s
2598 echo '.byte 1' >> conftest2.s
2599 echo '.section myfoosect, "a"' > conftest3.s
2600 echo '.byte 0' >> conftest3.s
2601 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2602 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2603 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2604 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2605 conftest2.o conftest3.o > /dev/null 2>&1; then
2606 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2607 | sed -e '/myfoosect/!d' -e N`
2608 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2609 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2610 gcc_cv_ld_ro_rw_mix=read-only
2612 gcc_cv_ld_ro_rw_mix=read-write
2617 rm -f conftest.* conftest[123].*
2620 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2621 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2622 [Define if your linker links a mix of read-only
2623 and read-write sections into a read-write section.])
2625 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2627 gcc_AC_INITFINI_ARRAY
2629 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2630 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2638 [[# GAS versions before 2.11 do not support uleb128,
2639 # despite appearing to.
2640 # ??? There exists an elf-specific test that will crash
2641 # the assembler. Perhaps it's better to figure out whether
2642 # arbitrary sections are supported and try the test.
2643 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2644 if echo "$as_ver" | grep GNU > /dev/null; then
2645 as_vers=`echo $as_ver | sed -n \
2646 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2647 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2648 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2649 if test $as_major -eq 2 && test $as_minor -lt 11
2651 else gcc_cv_as_leb128=yes
2654 [AC_DEFINE(HAVE_AS_LEB128, 1,
2655 [Define if your assembler supports .sleb128 and .uleb128.])])
2657 # Check if we have assembler support for unwind directives.
2658 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2665 .cfi_escape 1, 2, 3, 4, 5
2669 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2670 # read-only and read-write sections, we need to make sure that the
2671 # assembler used emits read-write .eh_frame sections.
2672 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2673 if test "x$gcc_cv_objdump" != x; then
2674 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2675 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2676 gcc_cv_as_cfi_directive=no
2679 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2680 # On Solaris/x86, make sure that GCC and assembler agree on using
2681 # read-only .eh_frame sections for 64-bit.
2682 if test x$gas = xyes; then
2683 as_ix86_64_opt="--64"
2685 as_ix86_64_opt="-xarch=amd64"
2687 if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \
2688 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2689 sed -e /.eh_frame/!d -e N | \
2690 grep READONLY > /dev/null; then
2691 gcc_cv_as_cfi_directive=yes
2693 gcc_cv_as_cfi_directive=no
2697 gcc_cv_as_cfi_directive=yes
2702 # no objdump, err on the side of caution
2703 gcc_cv_as_cfi_directive=no
2706 gcc_cv_as_cfi_directive=yes
2710 gcc_cv_as_cfi_directive=yes
2713 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2714 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2718 .cfi_adjust_cfa_offset 64
2720 .cfi_adjust_cfa_offset 128
2723 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2724 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2725 gcc_cv_as_cfi_advance_working=yes
2729 # no objdump, err on the side of caution
2730 gcc_cv_as_cfi_advance_working=no
2732 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2733 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2734 [`if test $gcc_cv_as_cfi_directive = yes \
2735 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2736 [Define 0/1 if your assembler supports CFI directives.])
2738 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2739 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2740 gcc_cv_as_cfi_personality_directive, ,,
2743 .cfi_personality 0, symbol
2745 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2746 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2747 then echo 1; else echo 0; fi`],
2748 [Define 0/1 if your assembler supports .cfi_personality.])
2750 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2751 gcc_cv_as_cfi_sections_directive, ,,
2753 .cfi_sections .debug_frame, .eh_frame
2757 win32 | pe | cygwin* | mingw32*)
2758 # Need to check that we generated the correct relocation for the
2759 # .debug_frame section. This was fixed for binutils 2.21.
2760 gcc_cv_as_cfi_sections_directive=no
2761 if test "x$gcc_cv_objdump" != x; then
2762 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2763 grep secrel > /dev/null; then
2764 gcc_cv_as_cfi_sections_directive=yes
2769 gcc_cv_as_cfi_sections_directive=yes
2772 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2773 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2774 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2775 then echo 1; else echo 0; fi`],
2776 [Define 0/1 if your assembler supports .cfi_sections.])
2778 # GAS versions up to and including 2.11.0 may mis-optimize
2780 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2788 .section .eh_frame,"aw",@progbits
2790 .4byte .LECIE1-.LSCIE1
2804 .4byte .LEFDE1-.LASFDE1
2806 .4byte .LASFDE1-__FRAME_BEGIN__
2814 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2815 cat > conftest.lit <<EOF
2816 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2817 0010 01000000 12000000 18000000 00000000 ................
2818 0020 08000000 04080000 0044 .........D @&t@
2820 cat > conftest.big <<EOF
2821 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2822 0010 00000001 00000012 00000018 00000000 ................
2823 0020 00000008 04000000 0844 .........D @&t@
2825 # If the assembler didn't choke, and we can objdump,
2826 # and we got the correct data, then succeed.
2827 # The text in the here-document typically retains its unix-style line
2828 # endings, while the output of objdump will use host line endings.
2829 # Therefore, use diff -b for the comparisons.
2830 if test x$gcc_cv_objdump != x \
2831 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2832 | tail -3 > conftest.got \
2833 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2834 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2836 gcc_cv_as_eh_frame=yes
2837 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2838 gcc_cv_as_eh_frame=buggy
2840 # Uh oh, what do we do now?
2841 gcc_cv_as_eh_frame=no
2844 if test $gcc_cv_as_eh_frame = buggy; then
2845 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2846 [Define if your assembler mis-optimizes .eh_frame data.])
2849 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2850 [elf,2,12,0], [--fatal-warnings],
2851 [.section .rodata.str, "aMS", @progbits, 1])
2852 if test $gcc_cv_as_shf_merge = no; then
2853 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2854 [elf,2,12,0], [--fatal-warnings],
2855 [.section .rodata.str, "aMS", %progbits, 1])
2857 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2858 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2859 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2861 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2862 gcc_cv_as_comdat_group,
2863 [elf,2,16,0], [--fatal-warnings],
2864 [.section .text,"axG",@progbits,.foo,comdat])
2865 if test $gcc_cv_as_comdat_group = yes; then
2866 gcc_cv_as_comdat_group_percent=no
2867 gcc_cv_as_comdat_group_group=no
2869 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2870 gcc_cv_as_comdat_group_percent,
2871 [elf,2,16,0], [--fatal-warnings],
2872 [.section .text,"axG",%progbits,.foo,comdat])
2873 if test $gcc_cv_as_comdat_group_percent = yes; then
2874 gcc_cv_as_comdat_group_group=no
2877 # Sun as uses a completely different syntax.
2882 .group foo,".text%foo",#comdat
2883 .section ".text%foo", #alloc,#execinstr,#progbits
2888 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2890 .group foo,.text%foo,#comdat
2891 .section .text%foo, "ax", @progbits
2897 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2898 gcc_cv_as_comdat_group_group,
2902 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2903 gcc_cv_as_comdat_group_group=no
2907 if test x"$ld_is_gold" = xyes; then
2909 elif test $in_tree_ld = yes ; then
2911 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2912 && test $in_tree_ld_is_elf = yes; then
2915 elif echo "$ld_ver" | grep GNU > /dev/null; then
2917 if test 0"$ld_date" -lt 20050308; then
2918 if test -n "$ld_date"; then
2919 # If there was date string, but was earlier than 2005-03-08, fail
2921 elif test "$ld_vers_major" -lt 2; then
2923 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2930 *-*-solaris2.1[1-9]*)
2932 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2933 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2936 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2937 # least ld version 1.2267.
2938 if test "$ld_vers_major" -gt 1; then
2940 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2942 elif test "$ld_vers_minor" -ge 2267; then
2947 # Assume linkers other than GNU ld don't support COMDAT group.
2953 # Allow overriding the automatic COMDAT group tests above.
2954 AC_ARG_ENABLE(comdat,
2955 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2956 [comdat_group="$enable_comdat"])
2957 if test $comdat_group = no; then
2958 gcc_cv_as_comdat_group=no
2959 gcc_cv_as_comdat_group_percent=no
2960 gcc_cv_as_comdat_group_group=no
2962 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2963 [`if test $gcc_cv_as_comdat_group = yes \
2964 || test $gcc_cv_as_comdat_group_percent = yes \
2965 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2966 [Define 0/1 if your assembler and linker support COMDAT groups.])
2968 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2969 gcc_cv_as_discriminator,
2973 .loc 1 1 0 discriminator 1],,
2974 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2975 [Define if your assembler supports the .loc discriminator sub-directive.])])
2977 # Thread-local storage - the check is heavily parameterized.
2986 .section ".tdata","awT",@progbits
2989 ldq $27,__tls_get_addr($29) !literal!1
2990 lda $16,foo($29) !tlsgd!1
2991 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2992 ldq $27,__tls_get_addr($29) !literal!2
2993 lda $16,foo($29) !tlsldm!2
2994 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2995 ldq $1,foo($29) !gotdtprel
2996 ldah $2,foo($29) !dtprelhi
2997 lda $3,foo($2) !dtprello
2998 lda $4,foo($29) !dtprel
2999 ldq $1,foo($29) !gottprel
3000 ldah $2,foo($29) !tprelhi
3001 lda $3,foo($2) !tprello
3002 lda $4,foo($29) !tprel'
3005 tls_as_opt=--fatal-warnings
3007 cris-*-*|crisv32-*-*)
3009 .section ".tdata","awT",@progbits
3016 tls_as_opt=--fatal-warnings
3020 .section ".tdata","awT",@progbits
3032 .section ".tdata","awT",@progbits
3036 addil LT%foo-$tls_gdidx$,gp
3037 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3040 addil LT%foo-$tls_ldidx$,gp
3042 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3043 addil LR%foo-$tls_dtpoff$,%ret0
3044 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3046 addil LT%foo-$tls_ieoff$,gp
3047 ldw RT%foo-$tls_ieoff$(%r1),%t2
3050 addil LR%foo-$tls_leoff$,%t1
3051 ldo RR%foo-$tls_leoff$(%r1),%t2'
3054 tls_as_opt=--fatal-warnings
3058 .section ".tdata","awT",%progbits
3069 i[34567]86-*-* | x86_64-*-*)
3071 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3078 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3080 .section .tdata,"awt",@progbits'
3085 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3086 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3090 .section ".tdata","awT",@progbits'
3094 tls_as_opt="--fatal-warnings"
3098 conftest_s="$conftest_s
3102 leal foo@tlsgd(,%ebx,1), %eax
3103 leal foo@tlsldm(%ebx), %eax
3104 leal foo@dtpoff(%eax), %edx
3105 movl foo@gottpoff(%ebx), %eax
3106 subl foo@gottpoff(%ebx), %eax
3107 addl foo@gotntpoff(%ebx), %eax
3108 movl foo@indntpoff, %eax
3109 movl \$foo@tpoff, %eax
3110 subl \$foo@tpoff, %eax
3111 leal foo@ntpoff(%ecx), %eax"
3114 if test x$on_solaris = xyes; then
3116 yes) tls_as_opt="$tls_as_opt --64" ;;
3117 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3120 conftest_s="$conftest_s
3124 leaq foo@tlsgd(%rip), %rdi
3125 leaq foo@tlsld(%rip), %rdi
3126 leaq foo@dtpoff(%rax), %rdx
3127 movq foo@gottpoff(%rip), %rax
3128 movq \$foo@tpoff, %rax"
3134 .section ".tdata","awT",@progbits
3137 addl r16 = @ltoff(@dtpmod(foo#)), gp
3138 addl r17 = @ltoff(@dtprel(foo#)), gp
3139 addl r18 = @ltoff(@tprel(foo#)), gp
3140 addl r19 = @dtprel(foo#), gp
3141 adds r21 = @dtprel(foo#), r13
3142 movl r23 = @dtprel(foo#)
3143 addl r20 = @tprel(foo#), gp
3144 adds r22 = @tprel(foo#), r13
3145 movl r24 = @tprel(foo#)'
3148 tls_as_opt=--fatal-warnings
3152 .section .tdata,"awT",@progbits
3156 addik r5,r20,x@TLSGD
3157 addik r5,r20,x@TLSLDM'
3160 tls_as_opt='--fatal-warnings'
3164 .section .tdata,"awT",@progbits
3168 addiu $4, $28, %tlsgd(x)
3169 addiu $4, $28, %tlsldm(x)
3170 lui $4, %dtprel_hi(x)
3171 addiu $4, $4, %dtprel_lo(x)
3172 lw $4, %gottprel(x)($28)
3173 lui $4, %tprel_hi(x)
3174 addiu $4, $4, %tprel_lo(x)'
3177 tls_as_opt='-32 --fatal-warnings'
3181 .section .tdata,"awT",@progbits
3186 move.l x@TLSGD(%a5),%a0
3187 move.l x@TLSLDM(%a5),%a0
3188 move.l x@TLSLDO(%a5),%a0
3189 move.l x@TLSIE(%a5),%a0
3190 move.l x@TLSLE(%a5),%a0'
3193 tls_as_opt='--fatal-warnings'
3197 .section ".tdata","awT",@progbits'
3200 tls_as_opt="--fatal-warnings"
3204 .section ".tdata","awT",%progbits
3208 add x0, x0, #:tlsgd_lo12:x
3213 tls_as_opt='--fatal-warnings'
3217 .extern __get_tpointer
3235 .section ".tdata","awT",@progbits
3243 addi 3,2,ld0@got@tlsgd
3249 addi 3,2,x1@got@tlsld
3255 addis 9,3,x2@dtprel@ha
3256 addi 9,9,x2@dtprel@l
3259 ld 9,x3@got@dtprel(2)
3265 tls_as_opt="-a64 --fatal-warnings"
3269 .section ".tdata","awT",@progbits
3277 addi 3,31,ld0@got@tlsgd
3279 addi 3,31,x1@got@tlsld
3282 addis 9,3,x2@dtprel@ha
3283 addi 9,9,x2@dtprel@l
3284 lwz 9,x3@got@tprel(31)
3287 addis 9,2,x2@tprel@ha
3288 addi 9,9,x2@tprel@l'
3291 tls_as_opt="-a32 --fatal-warnings"
3295 .section ".tdata","awT",@progbits
3304 l %r1,foo@GOTNTPOFF(%r12)
3305 l %r1,0(%r1):tls_load:foo
3306 bas %r14,0(%r1,%r13):tls_gdcall:foo
3307 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3310 tls_as_opt="-m31 --fatal-warnings"
3314 .section ".tdata","awT",@progbits
3322 lg %r1,foo@GOTNTPOFF(%r12)
3323 larl %r1,foo@INDNTPOFF
3324 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3325 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3328 tls_as_opt="-m64 -Aesame --fatal-warnings"
3330 sh-*-* | sh[34]-*-*)
3332 .section ".tdata","awT",@progbits
3342 tls_as_opt=--fatal-warnings
3346 sparc*-sun-solaris2.*)
3353 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3355 .section ".tdata",#alloc,#write,#tls'
3360 .section ".tdata","awT",@progbits'
3363 tls_as_opt="-32 --fatal-warnings"
3365 conftest_s="$conftest_s
3368 sethi %tgd_hi22(foo), %o0
3369 add %o0, %tgd_lo10(foo), %o1
3370 add %l7, %o1, %o0, %tgd_add(foo)
3371 call __tls_get_addr, %tgd_call(foo)
3372 sethi %tldm_hi22(foo), %l1
3373 add %l1, %tldm_lo10(foo), %l2
3374 add %l7, %l2, %o0, %tldm_add(foo)
3375 call __tls_get_addr, %tldm_call(foo)
3376 sethi %tldo_hix22(foo), %l3
3377 xor %l3, %tldo_lox10(foo), %l4
3378 add %o0, %l4, %l5, %tldo_add(foo)
3379 sethi %tie_hi22(foo), %o3
3380 add %o3, %tie_lo10(foo), %o3
3381 ld [%l7 + %o3], %o2, %tie_ld(foo)
3382 add %g7, %o2, %o4, %tie_add(foo)
3383 sethi %tle_hix22(foo), %l1
3384 xor %l1, %tle_lox10(foo), %o5
3385 ld [%g7 + %o5], %o1"
3389 .section ".tdata","awT",@progbits
3392 addli r0, zero, tls_gd(foo)
3393 auli r0, zero, tls_gd_ha16(foo)
3394 addli r0, r0, tls_gd_lo16(foo)
3396 addli r0, zero, tls_ie(foo)
3397 auli r0, r0, tls_ie_ha16(foo)
3398 addli r0, r0, tls_ie_lo16(foo)'
3401 tls_as_opt="--fatal-warnings"
3405 .section ".tdata","awT",@progbits
3408 shl16insli r0, zero, hw0_last_tls_gd(foo)
3409 shl16insli r0, zero, hw1_last_tls_gd(foo)
3410 shl16insli r0, r0, hw0_tls_gd(foo)
3412 shl16insli r0, zero, hw1_last_tls_ie(foo)
3413 shl16insli r0, r0, hw0_tls_ie(foo)'
3416 tls_as_opt="--fatal-warnings"
3420 .section ".tdata","awT",@progbits
3423 movi a8, foo@TLSFUNC
3424 movi a10, foo@TLSARG
3425 callx8.tls a8, foo@TLSCALL'
3432 if test "x$enable_tls" = xno ; then
3433 : # TLS explicitly disabled.
3434 elif test "x$enable_tls" = xyes ; then
3435 set_have_as_tls=yes # TLS explicitly enabled.
3436 elif test -z "$tls_first_major"; then
3437 : # If we don't have a check, assume no support.
3439 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3440 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3441 [set_have_as_tls=yes])
3443 if test $set_have_as_tls = yes ; then
3444 AC_DEFINE(HAVE_AS_TLS, 1,
3445 [Define if your assembler and linker support thread-local storage.])
3448 # Target-specific assembler checks.
3450 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3451 gcc_cv_ld_static_dynamic=no
3452 gcc_cv_ld_static_option='-Bstatic'
3453 gcc_cv_ld_dynamic_option='-Bdynamic'
3454 if test $in_tree_ld = yes ; then
3455 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3456 gcc_cv_ld_static_dynamic=yes
3458 elif test x$gcc_cv_ld != x; then
3459 # Check if linker supports -Bstatic/-Bdynamic option
3460 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3461 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3462 gcc_cv_ld_static_dynamic=yes
3465 # AIX ld uses -b flags
3466 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3467 gcc_cv_ld_static_dynamic=yes
3468 gcc_cv_ld_static_option="-bstatic"
3469 gcc_cv_ld_dynamic_option="-bdynamic"
3471 # HP-UX ld uses -a flags to select between shared and archive.
3473 if test x"$gnu_ld" = xno; then
3474 gcc_cv_ld_static_dynamic=yes
3475 gcc_cv_ld_static_option="-aarchive_shared"
3476 gcc_cv_ld_dynamic_option="-adefault"
3479 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3481 gcc_cv_ld_static_dynamic=yes
3486 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3487 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3488 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3489 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3490 [Define to the linker option to disable use of shared objects.])
3491 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3492 [Define to the linker option to enable use of shared objects.])
3494 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3496 if test x"$demangler_in_ld" = xyes; then
3497 AC_MSG_CHECKING(linker --demangle support)
3498 gcc_cv_ld_demangle=no
3499 if test $in_tree_ld = yes; then
3500 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3501 gcc_cv_ld_demangle=yes
3503 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3504 # Check if the GNU linker supports --demangle option
3505 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3506 gcc_cv_ld_demangle=yes
3509 if test x"$gcc_cv_ld_demangle" = xyes; then
3510 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3511 [Define if your linker supports --demangle option.])
3513 AC_MSG_RESULT($gcc_cv_ld_demangle)
3516 AC_MSG_CHECKING(linker plugin support)
3518 if test -f liblto_plugin.la; then
3519 save_ld_ver="$ld_ver"
3520 save_ld_vers_major="$ld_vers_major"
3521 save_ld_vers_minor="$ld_vers_minor"
3522 save_ld_is_gold="$ld_is_gold"
3526 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3528 # FIXME: ld_is_gold?
3529 ld_vers_major="$gcc_cv_gld_major_version"
3530 ld_vers_minor="$gcc_cv_gld_minor_version"
3532 # Determine plugin linker version.
3533 # FIXME: Partial duplicate from above, generalize.
3535 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3536 if echo "$ld_ver" | grep GNU > /dev/null; then
3537 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3539 ld_vers=`echo $ld_ver | sed -n \
3540 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3542 ld_vers=`echo $ld_ver | sed -n \
3543 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3545 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3546 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3551 # Determine plugin support.
3552 if echo "$ld_ver" | grep GNU > /dev/null; then
3553 # Require GNU ld or gold 2.21+ for plugin support by default.
3554 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3556 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3557 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3562 ld_ver="$save_ld_ver"
3563 ld_vers_major="$save_ld_vers_major"
3564 ld_vers_minor="$save_ld_vers_minor"
3565 ld_is_gold="$save_ld_is_gold"
3567 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3568 [Define to the level of your linker's plugin support.])
3569 AC_MSG_RESULT($gcc_cv_lto_plugin)
3573 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3574 [-mabi=lp64], [.text],,,)
3575 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3576 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3577 [Define if your assembler supports the -mabi option.])
3579 if test x$with_abi = xilp32; then
3580 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3581 Upgrade the Assembler.])
3583 if test x"$with_multilib_list" = xdefault; then
3584 TM_MULTILIB_CONFIG=lp64
3586 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3587 for aarch64_multilib in ${aarch64_multilibs}; do
3588 case ${aarch64_multilib} in
3590 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3591 Upgrade the Assembler.])
3599 # Check if we have binutils support for relocations types needed by -fpic
3600 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3603 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3604 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3605 [Define if your assembler supports relocs needed by -fpic.])])
3606 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3607 AC_ARG_ENABLE(fix-cortex-a53-835769,
3609 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3610 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3611 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3612 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3617 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3622 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3623 Valid choices are 'yes' and 'no'.])
3629 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3630 AC_ARG_ENABLE(fix-cortex-a53-843419,
3632 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3633 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3634 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3635 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3640 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3645 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3646 Valid choices are 'yes' and 'no'.])
3654 # All TARGET_ABI_OSF targets.
3655 alpha*-*-linux* | alpha*-*-*bsd*)
3656 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3657 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3660 extbl $3, $2, $3 !lituse_bytoff!1
3661 ldq $2, a($29) !literal!1
3662 ldq $4, b($29) !literal!2
3663 ldq_u $3, 0($2) !lituse_base!1
3664 ldq $27, f($29) !literal!5
3665 jsr $26, ($27), f !lituse_jsr!5
3666 ldah $29, 0($26) !gpdisp!3
3667 lda $0, c($29) !gprel
3668 ldah $1, d($29) !gprelhigh
3669 lda $1, d($1) !gprellow
3670 lda $29, 0($29) !gpdisp!3],,
3671 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3672 [Define if your assembler supports explicit relocations.])])
3673 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3674 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3677 ldq $27, a($29) !literal!1
3678 jsr $26, ($27), a !lituse_jsrdirect!1],,
3679 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3680 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3684 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3685 [--mlink-relax], [.text],,
3686 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3687 [Define if your avr assembler supports --mlink-relax option.])])
3689 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3691 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3692 [Define if your avr assembler supports -mrmw option.])])
3696 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3697 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3698 [-no-mul-bug-abort], [.text],,
3699 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3700 [Define if your assembler supports the -no-mul-bug-abort option.])])
3704 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3705 [.register %g2, #scratch],,
3706 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3707 [Define if your assembler supports .register.])])
3709 gcc_GAS_CHECK_FEATURE([@%:@nobits], gcc_cv_as_sparc_nobits,,,
3710 [.section "nobits",#alloc,#write,#nobits
3711 .section "progbits",#alloc,#write,#progbits])
3712 AC_DEFINE_UNQUOTED(HAVE_AS_SPARC_NOBITS,
3713 [`if test $gcc_cv_as_sparc_nobits = yes; then echo 1; else echo 0; fi`],
3714 [Define to 1 if your assembler supports #nobits, 0 otherwise.])
3716 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3718 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3719 [Define if your assembler supports -relax option.])])
3721 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3722 gcc_cv_as_sparc_gotdata_op,,
3729 sethi %gdop_hix22(foo), %g1
3730 xor %g1, %gdop_lox10(foo), %g1
3731 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3732 [if test x$gcc_cv_ld != x \
3733 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3734 if test x$gcc_cv_objdump != x; then
3735 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3736 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3737 gcc_cv_as_sparc_gotdata_op=no
3739 gcc_cv_as_sparc_gotdata_op=yes
3744 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3745 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3747 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3748 gcc_cv_as_sparc_ua_pcrel,,
3756 .uaword %r_disp32(foo)],
3757 [if test x$gcc_cv_ld != x \
3758 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3759 gcc_cv_as_sparc_ua_pcrel=yes
3762 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3763 [Define if your assembler and linker support unaligned PC relative relocs.])
3765 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3766 gcc_cv_as_sparc_ua_pcrel_hidden,,
3771 .uaword %r_disp32(foo)
3772 .byte 0x32, 0x33, 0x34
3777 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3778 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3779 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3780 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3781 if $gcc_cv_objdump -R conftest 2> /dev/null \
3782 | grep 'DISP32' > /dev/null 2>&1; then
3785 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3789 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3790 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3791 ]) # unaligned pcrel relocs
3793 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3794 gcc_cv_as_sparc_offsetable_lo10,,
3797 or %g1, %lo(ab) + 12, %g1
3798 or %g1, %lo(ab + 12), %g1],
3799 [if test x$gcc_cv_objdump != x \
3800 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3801 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3802 gcc_cv_as_sparc_offsetable_lo10=yes
3804 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3805 [Define if your assembler supports offsetable %lo().])])
3807 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3808 gcc_cv_as_sparc_fmaf,,
3811 .register %g2, #scratch
3812 .register %g3, #scratch
3814 fmaddd %f0, %f2, %f4, %f6
3815 addxccc %g1, %g2, %g3
3816 fsrl32 %f2, %f4, %f8
3817 fnaddd %f10, %f12, %f14],,
3818 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3819 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3821 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3822 gcc_cv_as_sparc_sparc4,,
3825 .register %g2, #scratch
3826 .register %g3, #scratch
3829 1: cwbneg %g2, %g3, 1f
3832 aes_kexpand0 %f4, %f6, %f8
3833 des_round %f38, %f40, %f42, %f44
3834 camellia_f %f54, %f56, %f58, %f60
3835 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3836 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3837 [Define if your assembler supports SPARC4 instructions.])])
3839 gcc_GAS_CHECK_FEATURE([LEON instructions],
3840 gcc_cv_as_sparc_leon,,
3843 .register %g2, #scratch
3844 .register %g3, #scratch
3848 casa [[%g2]] 0xb, %g3, %g1],,
3849 [AC_DEFINE(HAVE_AS_LEON, 1,
3850 [Define if your assembler supports LEON instructions.])])
3854 i[34567]86-*-* | x86_64-*-*)
3858 # Full C++ conformance when using a shared libstdc++-v3 requires some
3859 # support from the Cygwin DLL, which in more recent versions exports
3860 # wrappers to aid in interposing and redirecting operators new, delete,
3861 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3862 # are configuring for a version of Cygwin that exports the wrappers.
3863 if test x$host = x$target && test x$host_cpu = xi686; then
3864 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3866 # Can't check presence of libc functions during cross-compile, so
3867 # we just have to assume we're building for an up-to-date target.
3868 gcc_ac_cygwin_dll_wrappers=yes
3870 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3871 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3872 [Define if you want to generate code by default that assumes that the
3873 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3876 cygwin* | pe | mingw32* | interix*)
3877 # Recent binutils allows the three-operand form of ".comm" on PE. This
3878 # definition is used unconditionally to initialise the default state of
3879 # the target option variable that governs usage of the feature.
3880 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3881 [2,19,52],,[.comm foo,1,32])
3882 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3883 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3884 [Define if your assembler supports specifying the alignment
3885 of objects allocated using the GAS .comm command.])
3886 # Used for DWARF 2 in PE
3887 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3888 gcc_cv_as_ix86_pe_secrel32,
3894 [if test x$gcc_cv_ld != x \
3895 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3896 gcc_cv_as_ix86_pe_secrel32=yes
3899 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3900 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3901 # Test if the assembler supports the extended form of the .section
3902 # directive that specifies section alignment. LTO support uses this,
3903 # but normally only after installation, so we warn but don't fail the
3904 # configure if LTO is enabled but the assembler does not support it.
3905 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3906 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3907 if test x$gcc_cv_as_section_has_align != xyes; then
3908 case ",$enable_languages," in
3910 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3917 # Test if the assembler supports the section flag 'e' for specifying
3918 # an excluded section.
3919 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3920 [2,22,51], [--fatal-warnings],
3923 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3924 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3925 [Define if your assembler supports specifying the section flag e.])
3927 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3928 gcc_cv_as_ix86_filds,,,
3929 [filds (%ebp); fists (%ebp)],,
3930 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3931 [Define if your assembler uses filds and fists mnemonics.])])
3933 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3934 gcc_cv_as_ix86_fildq,,,
3935 [fildq (%ebp); fistpq (%ebp)],,
3936 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3937 [Define if your assembler uses fildq and fistq mnemonics.])])
3939 gcc_GAS_CHECK_FEATURE([cmov syntax],
3940 gcc_cv_as_ix86_cmov_sun_syntax,,,
3941 [cmovl.l %edx, %eax],,
3942 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3943 [Define if your assembler supports the Sun syntax for cmov.])])
3945 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3946 gcc_cv_as_ix86_ffreep,,,
3948 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3949 [Define if your assembler supports the ffreep mnemonic.])])
3951 gcc_GAS_CHECK_FEATURE([.quad directive],
3952 gcc_cv_as_ix86_quad,,,
3954 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3955 [Define if your assembler supports the .quad directive.])])
3957 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3958 gcc_cv_as_ix86_sahf,,,
3961 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3962 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3964 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
3965 gcc_cv_as_ix86_interunit_movq,,,
3969 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
3970 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
3971 [Define if your assembler supports interunit movq mnemonic.])
3973 gcc_GAS_CHECK_FEATURE([hle prefixes],
3974 gcc_cv_as_ix86_hle,,,
3975 [lock xacquire cmpxchg %esi, (%ecx)],,
3976 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3977 [Define if your assembler supports HLE prefixes.])])
3979 gcc_GAS_CHECK_FEATURE([swap suffix],
3980 gcc_cv_as_ix86_swap,,,
3981 [movl.s %esp, %ebp],,
3982 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3983 [Define if your assembler supports the swap suffix.])])
3985 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3986 gcc_cv_as_ix86_diff_sect_delta,,,
3994 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3995 [Define if your assembler supports the subtraction of symbols in different sections.])])
3997 # These two are used unconditionally by i386.[ch]; it is to be defined
3998 # to 1 if the feature is present, 0 otherwise.
3999 as_ix86_gotoff_in_data_opt=
4000 if test x$gas = xyes; then
4001 as_ix86_gotoff_in_data_opt="--32"
4003 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4004 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4005 [$as_ix86_gotoff_in_data_opt],
4011 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4012 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4013 [Define true if the assembler supports '.long foo@GOTOFF'.])
4015 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4016 gcc_cv_as_ix86_rep_lock_prefix,,,
4022 lock addl %edi, (%eax,%esi)
4023 lock orl $0, (%esp)],,
4024 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4025 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4027 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4028 gcc_cv_as_ix86_ud2,,,
4030 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4031 [Define if your assembler supports the 'ud2' mnemonic.])])
4033 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4034 gcc_cv_as_ix86_tlsgdplt,,,
4035 [call tls_gd@tlsgdplt],
4036 [if test x$gcc_cv_ld != x \
4037 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4038 gcc_cv_as_ix86_tlsgdplt=yes
4041 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4042 [Define if your assembler and linker support @tlsgdplt.])])
4045 .section .tdata,"aw'$tls_section_flag'",@progbits
4047 .section .text,"ax",@progbits
4048 call tls_ld@tlsldmplt'
4049 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4050 gcc_cv_as_ix86_tlsldmplt,,,
4052 [if test x$gcc_cv_ld != x \
4053 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4054 gcc_cv_as_ix86_tlsldmplt=yes
4057 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4058 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4059 [Define to 1 if your assembler and linker support @tlsldmplt.])
4061 # Enforce 32-bit output with gas and gld.
4062 if test x$gas = xyes; then
4063 as_ix86_tls_ldm_opt="--32"
4065 if echo "$ld_ver" | grep GNU > /dev/null; then
4066 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4067 ld_ix86_tls_ldm_opt="-melf_i386_sol2"
4069 ld_ix86_tls_ldm_opt="-melf_i386"
4073 .section .text,"ax",@progbits
4075 .type _start, @function
4077 leal value@tlsldm(%ebx), %eax
4078 call ___tls_get_addr@plt
4080 .section .tdata,"aw'$tls_section_flag'",@progbits
4081 .type value, @object
4083 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4084 gcc_cv_as_ix86_tlsldm,,
4085 [$as_ix86_tls_ldm_opt],
4087 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4088 && $gcc_cv_ld $ld_ix86_tls_ldm_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4089 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4090 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4091 gcc_cv_as_ix86_tlsldm=yes
4095 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4096 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4097 [Define to 1 if your assembler and linker support @tlsldm.])
4102 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4103 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4105 addl r15 = @ltoffx(x#), gp
4107 ld8.mov r16 = [[r15]], x#],,
4108 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4109 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4115 *-*-aix*) conftest_s=' .machine "pwr5"
4119 gcc_GAS_CHECK_FEATURE([.machine directive support],
4120 gcc_cv_as_machine_directive,,,
4121 [ .machine ppc7400])
4122 if test x$gcc_cv_as_machine_directive != xyes; then
4123 echo "*** This target requires an assembler supporting \".machine\"" >&2
4124 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4125 test x$build = x$target && exit 1
4129 *) conftest_s=' .machine power4
4134 gcc_GAS_CHECK_FEATURE([mfcr field support],
4135 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4137 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4138 [Define if your assembler supports mfcr field.])])
4141 *-*-aix*) conftest_s=' .machine "pwr5"
4144 *) conftest_s=' .machine power5
4149 gcc_GAS_CHECK_FEATURE([popcntb support],
4150 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4152 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4153 [Define if your assembler supports popcntb field.])])
4156 *-*-aix*) conftest_s=' .machine "pwr5x"
4159 *) conftest_s=' .machine power5
4164 gcc_GAS_CHECK_FEATURE([fp round support],
4165 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4167 [AC_DEFINE(HAVE_AS_FPRND, 1,
4168 [Define if your assembler supports fprnd.])])
4171 *-*-aix*) conftest_s=' .machine "pwr6"
4174 *) conftest_s=' .machine power6
4179 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4180 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4182 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4183 [Define if your assembler supports mffgpr and mftgpr.])])
4186 *-*-aix*) conftest_s=' .csect .text[[PR]]
4188 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4192 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4193 *) conftest_s=' .text
4195 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4198 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4199 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4201 [AC_DEFINE(HAVE_AS_REL16, 1,
4202 [Define if your assembler supports R_PPC_REL16 relocs.])])
4205 *-*-aix*) conftest_s=' .machine "pwr6"
4208 *) conftest_s=' .machine power6
4213 gcc_GAS_CHECK_FEATURE([compare bytes support],
4214 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4216 [AC_DEFINE(HAVE_AS_CMPB, 1,
4217 [Define if your assembler supports cmpb.])])
4220 *-*-aix*) conftest_s=' .machine "pwr6"
4223 *) conftest_s=' .machine power6
4228 gcc_GAS_CHECK_FEATURE([decimal float support],
4229 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4231 [AC_DEFINE(HAVE_AS_DFP, 1,
4232 [Define if your assembler supports DFP instructions.])])
4235 *-*-aix*) conftest_s=' .machine "pwr7"
4238 *) conftest_s=' .machine power7
4243 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4244 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4246 [AC_DEFINE(HAVE_AS_VSX, 1,
4247 [Define if your assembler supports VSX instructions.])])
4250 *-*-aix*) conftest_s=' .machine "pwr7"
4253 *) conftest_s=' .machine power7
4258 gcc_GAS_CHECK_FEATURE([popcntd support],
4259 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4261 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4262 [Define if your assembler supports POPCNTD instructions.])])
4265 *-*-aix*) conftest_s=' .machine "pwr8"
4266 .csect .text[[PR]]';;
4267 *) conftest_s=' .machine power8
4271 gcc_GAS_CHECK_FEATURE([power8 support],
4272 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4274 [AC_DEFINE(HAVE_AS_POWER8, 1,
4275 [Define if your assembler supports POWER8 instructions.])])
4278 *-*-aix*) conftest_s=' .csect .text[[PR]]
4280 *) conftest_s=' .text
4284 gcc_GAS_CHECK_FEATURE([lwsync support],
4285 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4287 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4288 [Define if your assembler supports LWSYNC instructions.])])
4291 *-*-aix*) conftest_s=' .machine "476"
4294 *) conftest_s=' .machine "476"
4299 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4300 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4302 [AC_DEFINE(HAVE_AS_DCI, 1,
4303 [Define if your assembler supports the DCI/ICI instructions.])])
4305 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4306 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4307 [.gnu_attribute 4,1],,
4308 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4309 [Define if your assembler supports .gnu_attribute.])])
4311 gcc_GAS_CHECK_FEATURE([tls marker support],
4312 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4313 [ bl __tls_get_addr(x@tlsgd)],,
4314 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4315 [Define if your assembler supports arg info for __tls_get_addr.])])
4319 gcc_GAS_CHECK_FEATURE([.ref support],
4320 gcc_cv_as_aix_ref, [2,21,0],,
4321 [ .csect stuff[[rw]]
4327 [AC_DEFINE(HAVE_AS_REF, 1,
4328 [Define if your assembler supports .ref])])
4334 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4335 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4336 [ lw $4,%gp_rel(foo)($4)],,
4337 [if test x$target_cpu_default = x
4338 then target_cpu_default=MASK_EXPLICIT_RELOCS
4339 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4341 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4342 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4343 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4344 [Define if the assembler understands -mno-shared.])])
4346 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4347 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4348 [.gnu_attribute 4,1],,
4349 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4350 [Define if your assembler supports .gnu_attribute.])])
4352 gcc_GAS_CHECK_FEATURE([.module support],
4353 gcc_cv_as_mips_dot_module,,[-32],
4356 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4357 [Define if your assembler supports .module.])])
4358 if test x$gcc_cv_as_mips_dot_module = xno \
4359 && test x$with_fp_32 != x; then
4361 [Requesting --with-fp-32= requires assembler support for .module.])
4364 gcc_GAS_CHECK_FEATURE([.micromips support],
4365 gcc_cv_as_micromips_support,,[--fatal-warnings],
4367 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4368 [Define if your assembler supports the .set micromips directive])])
4370 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4371 gcc_cv_as_mips_dtprelword, [2,18,0],,
4372 [.section .tdata,"awT",@progbits
4376 .dtprelword x+0x8000],,
4377 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4378 [Define if your assembler supports .dtprelword.])])
4380 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4381 gcc_cv_as_mips_dspr1_mult,,,
4391 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4392 [Define if your assembler supports DSPR1 mult.])])
4394 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4395 gcc_cv_as_ld_jalr_reloc=no
4396 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4397 if test $in_tree_ld = yes ; then
4398 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4399 && test $in_tree_ld_is_elf = yes; then
4400 gcc_cv_as_ld_jalr_reloc=yes
4402 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4403 echo ' .ent x' > conftest.s
4404 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4405 echo ' lw $25,%call16(y)($28)' >> conftest.s
4406 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4407 echo '1: jalr $25' >> conftest.s
4408 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4409 echo '1: jalr $25' >> conftest.s
4410 echo ' .end x' >> conftest.s
4411 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4412 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4413 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4414 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4415 gcc_cv_as_ld_jalr_reloc=yes
4421 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4422 if test x$target_cpu_default = x; then
4423 target_cpu_default=MASK_RELAX_PIC_CALLS
4425 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4428 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4430 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4431 [gcc_cv_ld_mips_personality_relaxation],
4432 [gcc_cv_ld_mips_personality_relaxation=no
4433 if test $in_tree_ld = yes ; then
4434 if test "$gcc_cv_gld_major_version" -eq 2 \
4435 -a "$gcc_cv_gld_minor_version" -ge 21 \
4436 -o "$gcc_cv_gld_major_version" -gt 2; then
4437 gcc_cv_ld_mips_personality_relaxation=yes
4439 elif test x$gcc_cv_as != x \
4440 -a x$gcc_cv_ld != x \
4441 -a x$gcc_cv_readelf != x ; then
4442 cat > conftest.s <<EOF
4444 .cfi_personality 0x80,indirect_ptr
4451 .section .data,"aw",@progbits
4455 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4456 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4457 if $gcc_cv_readelf -d conftest 2>&1 \
4458 | grep TEXTREL > /dev/null 2>&1; then
4460 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4461 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4464 gcc_cv_ld_mips_personality_relaxation=yes
4468 rm -f conftest.s conftest.o conftest])
4469 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4470 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4471 [Define if your linker can relax absolute .eh_frame personality
4472 pointers into PC-relative form.])
4475 gcc_GAS_CHECK_FEATURE([-mnan= support],
4476 gcc_cv_as_mips_nan,,
4478 [AC_DEFINE(HAVE_AS_NAN, 1,
4479 [Define if the assembler understands -mnan=.])])
4480 if test x$gcc_cv_as_mips_nan = xno \
4481 && test x$with_nan != x; then
4483 [Requesting --with-nan= requires assembler support for -mnan=])
4487 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4488 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4489 [.gnu_attribute 8,1],,
4490 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4491 [Define if your assembler supports .gnu_attribute.])])
4495 # Mips and HP-UX need the GNU assembler.
4496 # Linux on IA64 might be able to use the Intel assembler.
4499 mips*-*-* | *-*-hpux* )
4500 if test x$gas_flag = xyes \
4501 || test x"$host" != x"$build" \
4502 || test ! -x "$gcc_cv_as" \
4503 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4506 echo "*** This configuration requires the GNU assembler" >&2
4512 # ??? Not all targets support dwarf2 debug_line, even within a version
4513 # of gas. Moreover, we need to emit a valid instruction to trigger any
4514 # info to the output file. So, as supported targets are added to gas 2.11,
4515 # add some instruction here to (also) show we expect this might work.
4516 # ??? Once 2.11 is released, probably need to add first known working
4517 # version to the per-target configury.
4519 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4520 | mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
4521 | visium | xstormy16 | xtensa)
4531 if test x"$insn" != x; then
4533 .file 1 \"conftest.s\"
4536 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4537 gcc_cv_as_dwarf2_debug_line,
4538 [elf,2,11,0],, [$conftest_s],
4539 [if test x$gcc_cv_objdump != x \
4540 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4541 | grep debug_line > /dev/null 2>&1; then
4542 gcc_cv_as_dwarf2_debug_line=yes
4545 # The .debug_line file table must be in the exact order that
4546 # we specified the files, since these indices are also used
4547 # by DW_AT_decl_file. Approximate this test by testing if
4548 # the assembler bitches if the same index is assigned twice.
4549 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4550 gcc_cv_as_dwarf2_file_buggy,,,
4554 if test $gcc_cv_as_dwarf2_debug_line = yes \
4555 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4556 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4557 [Define if your assembler supports dwarf2 .file/.loc directives,
4558 and preserves file table indices exactly as given.])
4561 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4562 gcc_cv_as_gdwarf2_flag,
4563 [elf,2,11,0], [--gdwarf2], [$insn],,
4564 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4565 [Define if your assembler supports the --gdwarf2 option.])])
4567 gcc_GAS_CHECK_FEATURE([--gstabs option],
4568 gcc_cv_as_gstabs_flag,
4569 [elf,2,11,0], [--gstabs], [$insn],,
4570 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4571 [Define if your assembler supports the --gstabs option.])])
4573 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4574 gcc_cv_as_debug_prefix_map_flag,
4575 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4576 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4577 [Define if your assembler supports the --debug-prefix-map option.])])
4580 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4581 gcc_cv_as_compress_debug,,[--compress-debug-sections],,
4582 [# gas compiled without zlib cannot compress debug sections and warns
4583 # about it, but still exits successfully. So check for this, too.
4584 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4586 gcc_cv_as_compress_debug=0
4587 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4589 gcc_cv_as_compress_debug=1
4590 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4591 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4593 gcc_cv_as_compress_debug=0
4594 # FIXME: Future gas versions will support ELF gABI style via
4595 # --compress-debug-sections[=type].
4597 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4598 [Define to the level of your assembler's compressed debug section support.])
4599 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4600 [Define to the assembler option to enable compressed debug sections.])
4601 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4602 [Define to the assembler option to disable compressed debug sections.])
4604 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4607 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4608 [Define if your assembler supports .lcomm with an alignment field.])])
4610 if test x$with_sysroot = x && test x$host = x$target \
4611 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4612 && test "$prefix" != "NONE"; then
4613 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4614 [Define to PREFIX/include if cpp should also search that directory.])
4617 # Determine the version of glibc, if any, used on the target.
4618 AC_MSG_CHECKING([for target glibc version])
4619 AC_ARG_WITH([glibc-version],
4620 [AS_HELP_STRING([--with-glibc-version=M.N],
4621 [assume GCC used with glibc version M.N or later])], [
4622 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4623 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4624 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4626 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4628 glibc_version_major=0
4629 glibc_version_minor=0
4630 [if test -f $target_header_dir/features.h \
4631 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4632 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4633 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4634 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4636 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4637 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
4638 [GNU C Library major version number used on the target, or 0.])
4639 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
4640 [GNU C Library minor version number used on the target, or 0.])
4642 AC_ARG_ENABLE(gnu-unique-object,
4643 [AS_HELP_STRING([--enable-gnu-unique-object],
4644 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4645 [case $enable_gnu_unique_object in
4647 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4648 Valid choices are 'yes' and 'no'.]) ;;
4650 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4652 [.type foo, '$target_type_format_char'gnu_unique_object],,
4653 # We need to unquote above to to use the definition from config.gcc.
4654 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4655 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4657 if test x$enable_gnu_unique_object = xyes; then
4658 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4659 [Define if your assembler supports @gnu_unique_object.])
4662 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4663 [gcc_cv_as_line_zero],
4664 [gcc_cv_as_line_zero=no
4665 if test $in_tree_gas = yes; then
4666 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4667 elif test "x$gcc_cv_as" != x; then
4668 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4669 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4670 test "x`cat conftest.out`" = x
4672 gcc_cv_as_line_zero=yes
4674 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4675 cat conftest.s >&AS_MESSAGE_LOG_FD
4676 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4677 cat conftest.out >&AS_MESSAGE_LOG_FD
4679 rm -f conftest.o conftest.s conftest.out
4681 if test "x$gcc_cv_as_line_zero" = xyes; then
4682 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4683 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4686 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4687 gcc_cv_ld_eh_frame_hdr=no
4688 if test $in_tree_ld = yes ; then
4689 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4690 && test $in_tree_ld_is_elf = yes; then
4691 gcc_cv_ld_eh_frame_hdr=yes
4693 elif test x$gcc_cv_ld != x; then
4694 if echo "$ld_ver" | grep GNU > /dev/null; then
4695 # Check if linker supports --eh-frame-hdr option
4696 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4697 gcc_cv_ld_eh_frame_hdr=yes
4702 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4703 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4704 gcc_cv_ld_eh_frame_hdr=yes
4710 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4711 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4712 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4713 [Define if your linker supports .eh_frame_hdr.])
4715 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4717 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4718 gcc_cv_ld_eh_frame_ciev3=no
4719 if test $in_tree_ld = yes ; then
4720 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4721 && test $in_tree_ld_is_elf = yes; then
4722 gcc_cv_ld_eh_frame_ciev3=yes
4724 elif test x$gcc_cv_ld != x; then
4725 if echo "$ld_ver" | grep GNU > /dev/null; then
4726 gcc_cv_ld_eh_frame_ciev3=yes
4727 if test 0"$ld_date" -lt 20040513; then
4728 if test -n "$ld_date"; then
4729 # If there was date string, but was earlier than 2004-05-13, fail
4730 gcc_cv_ld_eh_frame_ciev3=no
4731 elif test "$ld_vers_major" -lt 2; then
4732 gcc_cv_ld_eh_frame_ciev3=no
4733 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4734 gcc_cv_ld_eh_frame_ciev3=no
4740 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4741 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4742 gcc_cv_ld_eh_frame_ciev3=yes
4748 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4749 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4750 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4751 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4753 AC_MSG_CHECKING(linker position independent executable support)
4755 if test $in_tree_ld = yes ; then
4756 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4757 && test $in_tree_ld_is_elf = yes; then
4760 elif test x$gcc_cv_ld != x; then
4761 # Check if linker supports -pie option
4762 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4766 if test x"$gcc_cv_ld_pie" = xyes; then
4767 AC_DEFINE(HAVE_LD_PIE, 1,
4768 [Define if your linker supports -pie option.])
4770 AC_MSG_RESULT($gcc_cv_ld_pie)
4772 AC_MSG_CHECKING(linker PIE support with copy reloc)
4773 gcc_cv_ld_pie_copyreloc=no
4774 if test $gcc_cv_ld_pie = yes ; then
4775 if test $in_tree_ld = yes ; then
4776 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
4777 gcc_cv_ld_pie_copyreloc=yes
4779 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4780 # Check if linker supports -pie option with copy reloc
4782 i?86-*-linux* | x86_64-*-linux*)
4783 cat > conftest1.s <<EOF
4786 .type a_glob, @object
4791 cat > conftest2.s <<EOF
4794 .type main, @function
4796 movl %eax, a_glob(%rip)
4799 .section .data.rel,"aw",@progbits
4804 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4805 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
4806 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4807 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
4808 gcc_cv_ld_pie_copyreloc=yes
4810 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
4815 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
4816 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
4817 [Define 0/1 if your linker supports -pie option with copy reloc.])
4818 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
4820 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4821 gcc_cv_ld_eh_gc_sections=no
4822 if test $in_tree_ld = yes ; then
4823 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4824 && test $in_tree_ld_is_elf = yes; then
4825 gcc_cv_ld_eh_gc_sections=yes
4827 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4828 cat > conftest.s <<EOF
4831 .type _start, @function
4834 .size _start, .-_start
4835 .section .text.foo,"ax",@progbits
4836 .type foo, @function
4840 .section .gcc_except_table.foo,"a",@progbits
4843 .section .eh_frame,"a",@progbits
4846 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4847 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4848 | grep "gc-sections option ignored" > /dev/null; then
4849 gcc_cv_ld_eh_gc_sections=no
4850 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4851 | grep gcc_except_table > /dev/null; then
4852 gcc_cv_ld_eh_gc_sections=yes
4853 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4854 if test x$gcc_cv_as_comdat_group != xyes; then
4855 gcc_cv_ld_eh_gc_sections=no
4856 cat > conftest.s <<EOF
4859 .type _start, @function
4862 .size _start, .-_start
4863 .section .gnu.linkonce.t.foo,"ax",@progbits
4864 .type foo, @function
4868 .section .gcc_except_table.foo,"a",@progbits
4871 .section .eh_frame,"a",@progbits
4874 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4875 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4876 | grep "gc-sections option ignored" > /dev/null; then
4877 gcc_cv_ld_eh_gc_sections=no
4878 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4879 | grep gcc_except_table > /dev/null; then
4880 gcc_cv_ld_eh_gc_sections=yes
4886 rm -f conftest.s conftest.o conftest
4890 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4891 gcc_cv_ld_eh_gc_sections=no
4894 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4895 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4896 [Define if your linker supports garbage collection of
4897 sections in presence of EH frames.])
4899 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4901 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4902 gcc_cv_ld_eh_gc_sections_bug=no
4903 if test $in_tree_ld = yes ; then
4904 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4905 && test $in_tree_ld_is_elf = yes; then
4906 gcc_cv_ld_eh_gc_sections_bug=yes
4908 elif test x$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
4909 gcc_cv_ld_eh_gc_sections_bug=yes
4910 cat > conftest.s <<EOF
4913 .type _start, @function
4916 .size _start, .-_start
4917 .section .text.startup.foo,"ax",@progbits
4918 .type foo, @function
4922 .section .gcc_except_table.foo,"a",@progbits
4925 .section .eh_frame,"a",@progbits
4928 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4929 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4930 | grep "gc-sections option ignored" > /dev/null; then
4932 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4933 | grep gcc_except_table > /dev/null; then
4934 gcc_cv_ld_eh_gc_sections_bug=no
4937 rm -f conftest.s conftest.o conftest
4939 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4940 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4941 [Define if your linker has buggy garbage collection of
4942 sections support when .text.startup.foo like sections are used.])
4944 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4946 AC_MSG_CHECKING(linker for compressed debug sections)
4947 # gold/gld support compressed debug sections since binutils 2.19/2.21
4948 if test $in_tree_ld = yes ; then
4949 gcc_cv_ld_compress_debug=0
4950 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
4951 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
4952 gcc_cv_ld_compress_debug=2
4953 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
4954 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
4955 && test $in_tree_ld_is_elf = yes; then
4956 gcc_cv_ld_compress_debug=1
4958 elif echo "$ld_ver" | grep GNU > /dev/null; then
4959 gcc_cv_ld_compress_debug=1
4960 if test 0"$ld_date" -lt 20050308; then
4961 if test -n "$ld_date"; then
4962 # If there was date string, but was earlier than 2005-03-08, fail
4963 gcc_cv_ld_compress_debug=0
4964 elif test "$ld_vers_major" -lt 2; then
4965 gcc_cv_ld_compress_debug=0
4966 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
4967 gcc_cv_ld_compress_debug=0
4970 if test $ld_is_gold = yes; then
4971 gcc_cv_ld_compress_debug=2
4972 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
4978 # Introduced in Solaris 11.2.
4979 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
4980 gcc_cv_ld_compress_debug=3
4981 gcc_cv_ld_compress_debug_option="-z compress-sections"
4983 gcc_cv_ld_compress_debug=0
4987 # Assume linkers other than GNU ld don't support compessed debug
4989 gcc_cv_ld_compress_debug=0
4994 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
4995 [Define to the level of your linker's compressed debug section support.])
4996 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
4997 [Define to the linker option to enable compressed debug sections.])
4998 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5004 AC_CACHE_CHECK(linker --as-needed support,
5005 gcc_cv_ld_as_needed,
5006 [gcc_cv_ld_as_needed=no
5007 gcc_cv_ld_as_needed_option='--as-needed'
5008 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5009 if test $in_tree_ld = yes ; then
5010 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5011 && test $in_tree_ld_is_elf = yes; then
5012 gcc_cv_ld_as_needed=yes
5014 elif test x$gcc_cv_ld != x; then
5015 # Check if linker supports --as-needed and --no-as-needed options
5016 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
5017 gcc_cv_ld_as_needed=yes
5020 # Solaris 2 ld always supports -z ignore/-z record.
5022 gcc_cv_ld_as_needed=yes
5023 gcc_cv_ld_as_needed_option="-z ignore"
5024 gcc_cv_ld_no_as_needed_option="-z record"
5029 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5030 # dl_iterate_phdr, i.e. since Solaris 11.
5032 *-*-solaris2.1[[1-9]]*)
5034 i?86-*-* | x86_64-*-*)
5035 if echo "$ld_ver" | grep GNU > /dev/null; then
5036 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5037 gcc_cv_ld_as_needed=no
5043 gcc_cv_ld_as_needed=no
5047 if test x"$gcc_cv_ld_as_needed" = xyes; then
5048 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5049 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5050 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5051 [Define to the linker option to ignore unused dependencies.])
5052 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5053 [Define to the linker option to keep unused dependencies.])
5056 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5057 saved_LDFLAGS="$LDFLAGS"
5058 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5059 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5060 AC_LINK_IFELSE([int main(void) {return 0;}],
5061 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5063 LDFLAGS="$saved_LDFLAGS"
5064 if test "x$gcc_cv_ld_clearcap" = xyes; then
5065 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5066 [Define if the linker supports clearing hardware capabilities via mapfile.])
5067 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5069 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5071 case "$target:$tm_file" in
5072 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5075 emul_name="-melf64lppc"
5078 emul_name="-melf64ppc"
5081 emul_name="-melf64ppc_fbsd"
5084 AC_CACHE_CHECK(linker support for omitting dot symbols,
5085 gcc_cv_ld_no_dot_syms,
5086 [gcc_cv_ld_no_dot_syms=no
5087 if test x"$ld_is_gold" = xyes; then
5088 gcc_cv_ld_no_dot_syms=yes
5089 elif test $in_tree_ld = yes ; then
5090 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5091 gcc_cv_ld_no_dot_syms=yes
5093 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5094 cat > conftest1.s <<EOF
5098 cat > conftest2.s <<EOF
5099 .section ".opd","aw"
5104 .quad .LEfoo,.TOC.@tocbase,0
5110 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5111 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5112 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5113 gcc_cv_ld_no_dot_syms=yes
5115 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5118 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5119 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5120 [Define if your PowerPC64 linker only needs function descriptor syms.])
5123 AC_CACHE_CHECK(linker large toc support,
5124 gcc_cv_ld_large_toc,
5125 [gcc_cv_ld_large_toc=no
5126 if test x"$ld_is_gold" = xyes; then
5127 gcc_cv_ld_large_toc=yes
5128 elif test $in_tree_ld = yes ; then
5129 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5130 gcc_cv_ld_large_toc=yes
5132 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5133 cat > conftest.s <<EOF
5134 .section ".tbss","awT",@nobits
5140 addis 9,13,ie0@got@tprel@ha
5141 ld 9,ie0@got@tprel@l(9)
5143 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5144 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5145 gcc_cv_ld_large_toc=yes
5147 rm -f conftest conftest.o conftest.s
5150 if test x"$gcc_cv_ld_large_toc" = xyes; then
5151 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5152 [Define if your PowerPC64 linker supports a large TOC.])
5155 AC_CACHE_CHECK(linker toc pointer alignment,
5156 gcc_cv_ld_toc_align,
5157 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5158 cat > conftest.s <<EOF
5163 .section .data.rel.ro,"aw",@progbits
5168 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5169 && $gcc_cv_ld $emul_name -o conftest conftest.o > /dev/null 2>&1; then
5170 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5172 rm -f conftest conftest.o conftest.s
5175 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5176 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5177 [Define to .TOC. alignment forced by your linker.])
5184 AC_CACHE_CHECK(linker large toc support,
5185 gcc_cv_ld_large_toc,
5186 [gcc_cv_ld_large_toc=no
5187 if test x$gcc_cv_as != x ; then
5188 cat > conftest.s <<EOF
5198 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5199 gcc_cv_ld_large_toc=yes
5201 rm -f conftest conftest.o conftest.s
5204 if test x"$gcc_cv_ld_large_toc" = xyes; then
5205 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5206 [Define if your PowerPC64 linker supports a large TOC.])
5211 AC_CACHE_CHECK(linker --build-id support,
5213 [gcc_cv_ld_buildid=no
5214 if test $in_tree_ld = yes ; then
5215 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5216 "$gcc_cv_gld_minor_version" -ge 18 -o \
5217 "$gcc_cv_gld_major_version" -gt 2 \
5218 && test $in_tree_ld_is_elf = yes; then
5219 gcc_cv_ld_buildid=yes
5221 elif test x$gcc_cv_ld != x; then
5222 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
5223 gcc_cv_ld_buildid=yes
5226 if test x"$gcc_cv_ld_buildid" = xyes; then
5227 AC_DEFINE(HAVE_LD_BUILDID, 1,
5228 [Define if your linker supports --build-id.])
5231 AC_ARG_ENABLE(linker-build-id,
5232 [AS_HELP_STRING([--enable-linker-build-id],
5233 [compiler will always pass --build-id to linker])],
5235 enable_linker_build_id=no)
5237 if test x"$enable_linker_build_id" = xyes; then
5238 if test x"$gcc_cv_ld_buildid" = xyes; then
5239 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5240 [Define if gcc should always pass --build-id to linker.])
5242 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5246 # In binutils 2.21, GNU ld gained support for new emulations fully
5247 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5248 AC_CACHE_CHECK(linker *_sol2 emulation support,
5249 gcc_cv_ld_sol2_emulation,
5250 [gcc_cv_ld_sol2_emulation=no
5251 if test $in_tree_ld = yes ; then
5252 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5253 "$gcc_cv_gld_minor_version" -ge 21 -o \
5254 "$gcc_cv_gld_major_version" -gt 2 \
5255 && test $in_tree_ld_is_elf = yes; then
5256 gcc_cv_ld_sol2_emulation=yes
5258 elif test x$gcc_cv_ld != x; then
5259 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5260 grep _sol2 > /dev/null; then
5261 gcc_cv_ld_sol2_emulation=yes
5264 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5265 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5266 [Define if your linker supports the *_sol2 emulations.])
5269 AC_CACHE_CHECK(linker --sysroot support,
5271 [gcc_cv_ld_sysroot=no
5272 if test $in_tree_ld = yes ; then
5273 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5274 gcc_cv_ld_sysroot=yes
5276 elif test x$gcc_cv_ld != x; then
5277 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
5278 gcc_cv_ld_sysroot=yes
5281 if test x"$gcc_cv_ld_sysroot" = xyes; then
5282 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5283 [Define if your linker supports --sysroot.])
5286 # Test for stack protector support in target C library.
5287 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5288 gcc_cv_libc_provides_ssp,
5289 [gcc_cv_libc_provides_ssp=no
5292 # All versions of musl provide stack protector
5293 gcc_cv_libc_provides_ssp=yes;;
5294 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
5295 # glibc 2.4 and later provides __stack_chk_fail and
5296 # either __stack_chk_guard, or TLS access to stack guard canary.
5297 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5298 [if test -f $target_header_dir/features.h \
5299 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5300 $target_header_dir/features.h > /dev/null; then
5301 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5302 $target_header_dir/features.h > /dev/null && \
5303 test -f $target_header_dir/bits/uClibc_config.h && \
5304 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5305 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5306 gcc_cv_libc_provides_ssp=yes
5308 # all versions of Bionic support stack protector
5309 elif test -f $target_header_dir/sys/cdefs.h \
5310 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5311 $target_header_dir/sys/cdefs.h > /dev/null; then
5312 gcc_cv_libc_provides_ssp=yes
5316 # Avoid complicated tests (see
5317 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5318 # simply assert that glibc does provide this, which is true for all
5319 # realistically usable GNU/Hurd configurations.
5320 # All supported versions of musl provide it as well
5321 gcc_cv_libc_provides_ssp=yes;;
5322 *-*-darwin* | *-*-freebsd*)
5323 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5324 [echo "no __stack_chk_fail on this target"])
5326 *) gcc_cv_libc_provides_ssp=no ;;
5329 if test x$gcc_cv_libc_provides_ssp = xyes; then
5330 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5331 [Define if your target C library provides stack protector support])
5334 # Check whether --enable-default-ssp was given.
5335 AC_ARG_ENABLE(default-ssp,
5336 [AS_HELP_STRING([--enable-default-ssp],
5337 [enable Stack Smashing Protection as default])],[
5338 if test x$gcc_cv_libc_provides_ssp = xyes; then
5340 ia64*-*-*) enable_default_ssp=no ;;
5341 *) enable_default_ssp=$enableval ;;
5344 enable_default_ssp=no
5346 enable_default_ssp=no)
5347 if test x$enable_default_ssp == xyes ; then
5348 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5349 [Define if your target supports default stack protector and it is enabled.])
5351 AC_SUBST([enable_default_ssp])
5353 # Test for <sys/sdt.h> on the target.
5354 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5355 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5357 if test -f $target_header_dir/sys/sdt.h; then
5359 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5360 [Define if your target C library provides sys/sdt.h])
5362 AC_MSG_RESULT($have_sys_sdt_h)
5364 # Check if TFmode long double should be used by default or not.
5365 # Some glibc targets used DFmode long double, but with glibc 2.4
5366 # and later they can use TFmode.
5368 powerpc*-*-linux* | \
5372 AC_ARG_WITH(long-double-128,
5373 [AS_HELP_STRING([--with-long-double-128],
5374 [use 128-bit long double by default])],
5375 gcc_cv_target_ldbl128="$with_long_double_128",
5376 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5377 [gcc_cv_target_ldbl128=no
5378 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5379 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5380 && gcc_cv_target_ldbl128=yes
5384 if test x$gcc_cv_target_ldbl128 = xyes; then
5385 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5386 [Define if TFmode long double should be the default])
5389 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5390 gcc_cv_target_dl_iterate_phdr=unknown
5392 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5393 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5394 # libdl there, both complicating its use and breaking compatibility
5395 # between Solaris 10 updates.
5396 *-*-solaris2.1[[1-9]]*)
5397 # <link.h> needs both a dl_iterate_phdr declaration and support for
5398 # compilation with largefile support.
5399 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5400 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5401 gcc_cv_target_dl_iterate_phdr=yes
5403 gcc_cv_target_dl_iterate_phdr=no
5406 *-*-dragonfly* | *-*-freebsd*)
5407 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5408 gcc_cv_target_dl_iterate_phdr=yes
5410 gcc_cv_target_dl_iterate_phdr=no
5414 gcc_cv_target_dl_iterate_phdr=yes
5417 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5418 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5419 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5420 [Define if your target C library provides the `dl_iterate_phdr' function.])
5422 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5424 # We no longer support different GC mechanisms. Emit an error if
5425 # the user configures with --with-gc.
5427 [AS_HELP_STRING([--with-gc={page,zone}],
5428 [this option is not supported anymore. It used to choose
5429 the garbage collection mechanism to use with the compiler])],
5430 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5433 # Libraries to use on the host. This will normally be set by the top
5434 # level Makefile. Here we simply capture the value for our Makefile.
5435 if test -z "${HOST_LIBS+set}"; then
5440 # Use the system's zlib library.
5443 dnl Very limited version of automake's enable-maintainer-mode
5445 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5446 dnl maintainer-mode is disabled by default
5447 AC_ARG_ENABLE(maintainer-mode,
5448 [AS_HELP_STRING([--enable-maintainer-mode],
5449 [enable make rules and dependencies not useful
5450 (and sometimes confusing) to the casual installer])],
5451 maintainer_mode=$enableval,
5454 AC_MSG_RESULT($maintainer_mode)
5456 if test "$maintainer_mode" = "yes"; then
5463 dnl Whether to prevent multiple front-ends from linking at the same time
5465 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5466 AC_ARG_ENABLE(link-mutex,
5467 [AS_HELP_STRING([--enable-link-mutex],
5468 [avoid linking multiple front-ends at once to avoid thrashing
5469 on the build machine])],
5470 do_link_mutex=$enableval,
5472 AC_MSG_RESULT($do_link_mutex)
5474 if test "$do_link_mutex" = "yes"; then
5479 AC_SUBST(DO_LINK_MUTEX)
5485 # Make empty files to contain the specs and options for each language.
5486 # Then add #include lines to for a compiler that has specs and/or options.
5492 # These (without "all_") are set in each config-lang.in.
5493 # `language' must be a single word so is spelled singularly.
5496 all_outputs='Makefile'
5497 # List of language makefile fragments.
5499 # Additional files for gengtype
5500 all_gtfiles="$target_gtfiles"
5502 # These are the languages that are set in --enable-languages,
5503 # and are available in the GCC tree.
5504 all_selected_languages=
5506 # Add the language fragments.
5507 # Languages are added via two mechanisms. Some information must be
5508 # recorded in makefile variables, these are defined in config-lang.in.
5509 # We accumulate them and plug them into the main Makefile.
5510 # The other mechanism is a set of hooks for each of the main targets
5511 # like `clean', `install', etc.
5513 language_hooks="Make-hooks"
5515 for lang in ${srcdir}/*/config-lang.in
5518 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5520 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5521 if test "x$lang_alias" = x
5523 echo "$lang doesn't set \$language." 1>&2
5526 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5527 subdirs="$subdirs $subdir"
5529 # $gcc_subdir is where the gcc integration files are to be found
5530 # for a language, both for internal compiler purposes (compiler
5531 # sources implementing front-end to GCC tree converters), and for
5532 # build infrastructure purposes (Make-lang.in, etc.)
5534 # This will be <subdir> (relative to $srcdir) if a line like
5535 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5536 # is found in <langdir>/config-lang.in, and will remain <langdir>
5539 # Except for the language alias (fetched above), the regular
5540 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5541 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5542 # only this and the language alias.
5544 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5545 if [ "$gcc_subdir" = "" ]; then
5546 gcc_subdir="$subdir"
5549 case ",$enable_languages," in
5551 all_selected_languages="$all_selected_languages $lang_alias"
5552 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5553 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5565 . ${srcdir}/$gcc_subdir/config-lang.in
5566 if test "x$language" = x
5568 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5573 case ",$enable_languages," in
5576 for i in $subdir_requires; do
5577 test -f "${srcdir}/$i/config-lang.in" && continue
5585 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5586 if test -f $srcdir/$gcc_subdir/lang.opt; then
5587 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5588 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5590 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5591 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5593 all_languages="$all_languages $language"
5594 all_compilers="$all_compilers $compilers"
5595 all_outputs="$all_outputs $outputs"
5596 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5597 case ",$enable_languages," in
5599 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5601 AC_SUBST(enable_lto)
5608 for language in $all_selected_languages
5610 check_languages="$check_languages check-$language"
5613 # We link each language in with a set of hooks, reached indirectly via
5614 # lang.${target}. Only do so for selected languages.
5618 target_list="all.cross start.encap rest.encap tags \
5619 install-common install-man install-info install-pdf install-html dvi \
5620 pdf html uninstall info man srcextra srcman srcinfo \
5621 mostlyclean clean distclean maintainer-clean install-plugin"
5623 for t in $target_list
5626 for lang in $all_selected_languages
5630 echo "lang.$t: $x" >> Make-hooks
5634 # Option include files
5637 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5638 option_includes="option-includes.mk"
5639 AC_SUBST_FILE(option_includes)
5647 echo "dir ." > .gdbinit
5648 echo "dir ${srcdir}" >> .gdbinit
5649 if test x$gdb_needs_out_file_path = xyes
5651 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5653 if test "x$subdirs" != x; then
5656 echo "dir ${srcdir}/$s" >> .gdbinit
5659 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5660 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
5662 # Put a breakpoint on __asan_report_error to help with debugging buffer
5665 *-fsanitize=address*)
5666 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
5670 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5671 AC_SUBST(gcc_tooldir)
5674 # Find a directory in which to install a shared libgcc.
5676 AC_ARG_ENABLE(version-specific-runtime-libs,
5677 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5678 [specify that runtime libraries should be
5679 installed in a compiler-specific directory])])
5681 # Substitute configuration variables
5684 AC_SUBST(all_compilers)
5685 AC_SUBST(all_gtfiles)
5686 AC_SUBST(all_lang_makefrags)
5687 AC_SUBST(all_languages)
5688 AC_SUBST(all_selected_languages)
5689 AC_SUBST(build_exeext)
5690 AC_SUBST(build_install_headers_dir)
5691 AC_SUBST(build_xm_file_list)
5692 AC_SUBST(build_xm_include_list)
5693 AC_SUBST(build_xm_defines)
5694 AC_SUBST(build_file_translate)
5695 AC_SUBST(check_languages)
5696 AC_SUBST(cpp_install_dir)
5697 AC_SUBST(xmake_file)
5698 AC_SUBST(tmake_file)
5699 AC_SUBST(TM_ENDIAN_CONFIG)
5700 AC_SUBST(TM_MULTILIB_CONFIG)
5701 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5702 AC_SUBST(extra_gcc_objs)
5703 AC_SUBST(user_headers_inc_next_pre)
5704 AC_SUBST(user_headers_inc_next_post)
5705 AC_SUBST(extra_headers_list)
5706 AC_SUBST(extra_objs)
5707 AC_SUBST(extra_programs)
5708 AC_SUBST(float_h_file)
5709 AC_SUBST(gcc_config_arguments)
5710 AC_SUBST(gcc_gxx_include_dir)
5711 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5712 AC_SUBST(host_exeext)
5713 AC_SUBST(host_xm_file_list)
5714 AC_SUBST(host_xm_include_list)
5715 AC_SUBST(host_xm_defines)
5716 AC_SUBST(out_host_hook_obj)
5718 AC_SUBST(lang_opt_files)
5719 AC_SUBST(lang_specs_files)
5720 AC_SUBST(lang_tree_files)
5721 AC_SUBST(local_prefix)
5723 AC_SUBST(objc_boehm_gc)
5725 AC_SUBST(out_object_file)
5726 AC_SUBST(common_out_file)
5727 AC_SUBST(common_out_object_file)
5728 AC_SUBST(tm_file_list)
5729 AC_SUBST(tm_include_list)
5730 AC_SUBST(tm_defines)
5731 AC_SUBST(tm_p_file_list)
5732 AC_SUBST(tm_p_include_list)
5733 AC_SUBST(xm_file_list)
5734 AC_SUBST(xm_include_list)
5735 AC_SUBST(xm_defines)
5736 AC_SUBST(use_gcc_stdint)
5737 AC_SUBST(c_target_objs)
5738 AC_SUBST(cxx_target_objs)
5739 AC_SUBST(fortran_target_objs)
5740 AC_SUBST(target_cpu_default)
5742 AC_SUBST_FILE(language_hooks)
5745 if test x${build} = x${host} ; then
5746 if test x${host} = x${target} ; then
5747 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5749 echo "Links are now set up to build a cross-compiler" 1>&2
5750 echo " from ${host} to ${target}." 1>&2
5753 if test x${host} = x${target} ; then
5754 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5755 echo " for ${target}." 1>&2
5757 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5758 echo " from ${host} to ${target}." 1>&2
5762 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5763 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5765 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5766 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5767 if test "x${ISLLIBS}" != "x" ; then
5768 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
5771 # Check whether isl_schedule_constraints_compute_schedule is available;
5772 # it's new in ISL-0.13.
5773 # Check whether isl_options_set_schedule_serialize_sccs is available;
5774 # it's new in ISL-0.15.
5775 if test "x${ISLLIBS}" != "x" ; then
5776 saved_CXXFLAGS="$CXXFLAGS"
5777 CXXFLAGS="$CXXFLAGS $ISLINC"
5779 LIBS="$LIBS $ISLLIBS $GMPLIBS"
5781 AC_MSG_CHECKING([Checking for isl_schedule_constraints_compute_schedule])
5782 AC_TRY_LINK([#include <isl/schedule.h>],
5783 [isl_schedule_constraints_compute_schedule (NULL);],
5784 [ac_has_isl_schedule_constraints_compute_schedule=yes],
5785 [ac_has_isl_schedule_constraints_compute_schedule=no])
5786 AC_MSG_RESULT($ac_has_isl_schedule_constraints_compute_schedule)
5788 AC_MSG_CHECKING([Checking for isl_options_set_schedule_serialize_sccs])
5789 AC_TRY_LINK([#include <isl/schedule.h>],
5790 [isl_options_set_schedule_serialize_sccs (NULL, 0);],
5791 [ac_has_isl_options_set_schedule_serialize_sccs=yes],
5792 [ac_has_isl_options_set_schedule_serialize_sccs=no])
5793 AC_MSG_RESULT($ac_has_isl_options_set_schedule_serialize_sccs)
5796 CXXFLAGS="$saved_CXXFLAGS"
5798 if test x"$ac_has_isl_schedule_constraints_compute_schedule" = x"yes"; then
5799 AC_DEFINE(HAVE_ISL_SCHED_CONSTRAINTS_COMPUTE_SCHEDULE, 1,
5800 [Define if isl_schedule_constraints_compute_schedule exists.])
5803 if test x"$ac_has_isl_options_set_schedule_serialize_sccs" = x"yes"; then
5804 AC_DEFINE(HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS, 1,
5805 [Define if isl_options_set_schedule_serialize_sccs exists.])
5810 AC_SUBST(pluginlibs)
5811 AC_SUBST(enable_plugin)
5812 if test x"$enable_plugin" = x"yes"; then
5813 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5817 # Enable --enable-host-shared
5818 AC_ARG_ENABLE(host-shared,
5819 [AS_HELP_STRING([--enable-host-shared],
5820 [build host code as shared libraries])],
5821 [PICFLAG=-fPIC], [PICFLAG=])
5822 AC_SUBST(enable_host_shared)
5826 AC_ARG_ENABLE(libquadmath-support,
5827 [AS_HELP_STRING([--disable-libquadmath-support],
5828 [disable libquadmath support for Fortran])],
5829 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5830 ENABLE_LIBQUADMATH_SUPPORT=yes)
5831 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5832 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5833 [Define to 1 to enable libquadmath support])
5837 # Specify what hash style to use by default.
5838 AC_ARG_WITH([linker-hash-style],
5839 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5840 [specify the linker hash style])],
5841 [case x"$withval" in
5843 LINKER_HASH_STYLE=sysv
5846 LINKER_HASH_STYLE=gnu
5849 LINKER_HASH_STYLE=both
5852 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5855 [LINKER_HASH_STYLE=''])
5856 if test x"${LINKER_HASH_STYLE}" != x; then
5857 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5858 [The linker hash style])
5861 # Specify what should be the default of -fdiagnostics-color option.
5862 AC_ARG_WITH([diagnostics-color],
5863 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
5864 [specify the default of -fdiagnostics-color option
5865 auto-if-env stands for -fdiagnostics-color=auto if
5866 GCC_COLOR environment variable is present and
5867 -fdiagnostics-color=never otherwise])],
5868 [case x"$withval" in
5870 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
5873 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
5876 DIAGNOSTICS_COLOR_DEFAULT=-1
5879 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
5882 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
5885 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
5886 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
5887 [The default for -fdiagnostics-color option])
5889 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
5890 # of jit/jit-playback.c.
5891 cat > gcc-driver-name.h <<EOF
5892 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
5895 # Check whether --enable-default-pie was given.
5896 AC_ARG_ENABLE(default-pie,
5897 [AS_HELP_STRING([--enable-default-pie],
5898 [enable Position Independent Executable as default])],
5899 enable_default_pie=$enableval,
5900 enable_default_pie=no)
5901 if test x$enable_default_pie == xyes ; then
5902 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
5903 [Define if your target supports default PIE and it is enabled.])
5905 AC_SUBST([enable_default_pie])
5907 # Check if -fno-PIE works.
5908 AC_CACHE_CHECK([for -fno-PIE option],
5910 [saved_CXXFLAGS="$CXXFLAGS"
5911 CXXFLAGS="$CXXFLAGS -fno-PIE"
5912 AC_COMPILE_IFELSE([int main(void) {return 0;}],
5913 [gcc_cv_c_no_fpie=yes],
5914 [gcc_cv_c_no_fpie=no])
5915 CXXFLAGS="$saved_CXXFLAGS"])
5916 if test "$gcc_cv_c_no_fpie" = "yes"; then
5917 NO_PIE_CFLAGS="-fno-PIE"
5919 AC_SUBST([NO_PIE_CFLAGS])
5921 # Check if -no-pie works.
5922 AC_CACHE_CHECK([for -no-pie option],
5924 [saved_LDFLAGS="$LDFLAGS"
5925 LDFLAGS="$LDFLAGS -no-pie"
5926 AC_LINK_IFELSE([int main(void) {return 0;}],
5927 [gcc_cv_no_pie=yes],
5929 LDFLAGS="$saved_LDFLAGS"])
5930 if test "$gcc_cv_no_pie" = "yes"; then
5931 NO_PIE_FLAG="-no-pie"
5933 AC_SUBST([NO_PIE_FLAG])
5935 # Check linker supports '-z bndplt'
5936 ld_bndplt_support=no
5937 AC_MSG_CHECKING(linker -z bndplt option)
5938 if test x"$ld_is_gold" = xno; then
5939 if test $in_tree_ld = yes ; then
5940 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5941 ld_bndplt_support=yes
5943 elif test x$gcc_cv_ld != x; then
5944 # Check if linker supports -a bndplt option
5945 if $gcc_cv_ld --help 2>/dev/null | grep -- '-z bndplt' > /dev/null; then
5946 ld_bndplt_support=yes
5950 if test x"$ld_bndplt_support" = xyes; then
5951 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
5952 [Define if your linker supports -z bndplt])
5954 AC_MSG_RESULT($ld_bndplt_support)
5956 # Configure the subdirectories
5957 # AC_CONFIG_SUBDIRS($subdirs)
5959 # Create the Makefile
5960 # and configure language subdirectories
5961 AC_CONFIG_FILES($all_outputs)
5963 AC_CONFIG_COMMANDS([default],
5965 case ${CONFIG_HEADERS} in
5966 *auto-host.h:config.in*)
5969 # Make sure all the subdirs exist.
5970 for d in $subdirs doc build common c-family
5972 test -d $d || mkdir $d
5975 [subdirs='$subdirs'])