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, "$offload_targets",
948 [Define to offload targets, separated by commas.])
949 if test x"$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 setenv unsetenv \
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 AC_MSG_CHECKING(gold linker with split stack support as non default)
2251 # Check to see if default ld is not gold, but gold is
2252 # available and has support for split stack. If gcc was configured
2253 # with gold then no checking is done.
2255 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2257 # For platforms other than powerpc64*, enable as appropriate.
2260 ld_gold=`which ${gcc_cv_ld}.gold`
2261 # Make sure this gold has minimal split stack support
2262 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2263 ld_vers=`$ld_gold --version | sed 1q`
2264 gold_vers=`echo $ld_vers | sed -n \
2265 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2267 # check that the gold version contains the complete split stack support
2268 # on powerpc64 big and little endian
2270 case "$gold_vers" in
2271 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2273 *) gold_non_default=no
2279 if test $gold_non_default = yes; then
2280 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2281 [Define if the gold linker supports split stack and is available as a non-default])
2284 AC_MSG_RESULT($gold_non_default)
2286 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2287 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2288 case "$ORIGINAL_LD_FOR_TARGET" in
2289 ./collect-ld | ./collect-ld$build_exeext) ;;
2290 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2293 AC_MSG_CHECKING(what linker to use)
2294 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2295 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2296 # Single tree build which includes ld. We want to prefer it
2297 # over whatever linker top-level may have detected, since
2298 # we'll use what we're building after installation anyway.
2299 AC_MSG_RESULT(newly built ld)
2301 in_tree_ld_is_elf=no
2302 if (grep 'EMUL = .*elf' ../ld/Makefile \
2303 || grep 'EMUL = .*linux' ../ld/Makefile \
2304 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2305 in_tree_ld_is_elf=yes
2306 elif test "$ld_is_gold" = yes; then
2307 in_tree_ld_is_elf=yes
2309 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
2312 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2313 if test x$gcc_cv_gld_version != x; then
2317 case $gcc_cv_gld_version in
2320 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2323 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2324 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2326 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2327 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2329 AC_MSG_RESULT($gcc_cv_ld)
2331 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2332 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2333 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2336 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2337 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2339 # Figure out what nm we will be using.
2340 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2341 AS_VAR_SET_IF(gcc_cv_nm,, [
2342 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2343 && test -f ../binutils/Makefile \
2344 && test x$build = x$host; then
2345 gcc_cv_nm=../binutils/nm-new$build_exeext
2346 elif test -x nm$build_exeext; then
2347 gcc_cv_nm=./nm$build_exeext
2348 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2349 gcc_cv_nm="$NM_FOR_TARGET"
2351 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2354 AC_MSG_CHECKING(what nm to use)
2355 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2356 # Single tree build which includes binutils.
2357 AC_MSG_RESULT(newly built nm)
2360 AC_MSG_RESULT($gcc_cv_nm)
2364 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2365 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2366 case "$ORIGINAL_NM_FOR_TARGET" in
2367 ./nm | ./nm$build_exeext) ;;
2368 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2372 # Figure out what objdump we will be using.
2373 AS_VAR_SET_IF(gcc_cv_objdump,, [
2374 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2375 && test -f ../binutils/Makefile \
2376 && test x$build = x$host; then
2377 # Single tree build which includes binutils.
2378 gcc_cv_objdump=../binutils/objdump$build_exeext
2379 elif test -x objdump$build_exeext; then
2380 gcc_cv_objdump=./objdump$build_exeext
2381 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2382 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2384 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2387 AC_MSG_CHECKING(what objdump to use)
2388 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2389 # Single tree build which includes binutils.
2390 AC_MSG_RESULT(newly built objdump)
2391 elif test x$gcc_cv_objdump = x; then
2392 AC_MSG_RESULT(not found)
2394 AC_MSG_RESULT($gcc_cv_objdump)
2397 # Figure out what readelf we will be using.
2398 AS_VAR_SET_IF(gcc_cv_readelf,, [
2399 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2400 && test -f ../binutils/Makefile \
2401 && test x$build = x$host; then
2402 # Single tree build which includes binutils.
2403 gcc_cv_readelf=../binutils/readelf$build_exeext
2404 elif test -x readelf$build_exeext; then
2405 gcc_cv_readelf=./readelf$build_exeext
2407 AC_PATH_PROG(gcc_cv_readelf, readelf)
2410 AC_MSG_CHECKING(what readelf to use)
2411 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2412 # Single tree build which includes binutils.
2413 AC_MSG_RESULT(newly built readelf)
2414 elif test x$gcc_cv_readelf = x; then
2415 AC_MSG_RESULT(not found)
2417 AC_MSG_RESULT($gcc_cv_readelf)
2420 # Figure out what assembler alignment features are present.
2421 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2425 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2426 [Define if your assembler supports .balign and .p2align.])])
2428 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2431 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2432 [Define if your assembler supports specifying the maximum number
2433 of bytes to skip when using the GAS .p2align command.])])
2435 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2438 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2439 [Define if your assembler supports .literal16.])])
2441 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2443 [conftest_label1: .word 0
2445 conftest_label2: .word 0
2447 [if test x$gcc_cv_nm != x; then
2448 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2449 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2450 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2452 else gcc_cv_as_subsection_m1=yes
2454 rm -f conftest.nm1 conftest.nm2
2456 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2457 [Define if your assembler supports .subsection and .subsection -1 starts
2458 emitting at the beginning of your section.])])
2460 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2463 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2465 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2467 [ .weakref foobar, barfnot],,
2468 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2470 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2473 .NSUBSPA $CODE$,COMDAT],,
2474 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2476 # .hidden needs to be supported in both the assembler and the linker,
2477 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2478 # This is irritatingly difficult to feature test for; we have to check the
2479 # date string after the version number. If we've got an in-tree
2480 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2482 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2483 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2489 # Darwin as has some visibility support, though with a different syntax.
2490 gcc_cv_as_hidden=yes
2494 # gnu_indirect_function type is an extension proposed at
2495 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2496 # selection of function implementation
2497 AC_ARG_ENABLE(gnu-indirect-function,
2498 [AS_HELP_STRING([--enable-gnu-indirect-function],
2499 [enable the use of the @gnu_indirect_function to glibc systems])],
2500 [case $enable_gnu_indirect_function in
2502 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2503 Valid choices are 'yes' and 'no'.]) ;;
2505 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2507 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2508 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2509 [Define if your system supports gnu indirect functions.])
2513 if test $in_tree_ld != yes ; then
2514 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2515 if echo "$ld_ver" | grep GNU > /dev/null; then
2516 if test x"$ld_is_gold" = xyes; then
2517 # GNU gold --version looks like this:
2519 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2521 # We extract the binutils version which is more familiar and specific
2522 # than the gold version.
2523 ld_vers=`echo $ld_ver | sed -n \
2524 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2526 # GNU ld --version looks like this:
2528 # GNU ld (GNU Binutils) 2.21.51.20110225
2529 ld_vers=`echo $ld_ver | sed -n \
2530 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2532 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2533 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2534 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2535 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2539 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2542 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2543 # /usr/ccs/bin/ld has been configured.
2544 ld_ver=`$gcc_cv_ld -V 2>&1`
2545 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2546 ld_vers=`echo $ld_ver | sed -n \
2547 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2548 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2549 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2557 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2558 [[if test $in_tree_ld = yes ; then
2560 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2561 && test $in_tree_ld_is_elf = yes; then
2562 gcc_cv_ld_hidden=yes
2565 gcc_cv_ld_hidden=yes
2566 if test x"$ld_is_gold" = xyes; then
2568 elif echo "$ld_ver" | grep GNU > /dev/null; then
2570 mmix-knuth-mmixware)
2571 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2575 if test 0"$ld_date" -lt 20020404; then
2576 if test -n "$ld_date"; then
2577 # If there was date string, but was earlier than 2002-04-04, fail
2579 elif test -z "$ld_vers"; then
2580 # If there was no date string nor ld version number, something is wrong
2583 test -z "$ld_vers_patch" && ld_vers_patch=0
2584 if test "$ld_vers_major" -lt 2; then
2586 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2587 gcc_cv_ld_hidden="no"
2588 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2596 # Darwin ld has some visibility support.
2597 gcc_cv_ld_hidden=yes
2599 hppa64*-*-hpux* | ia64*-*-hpux*)
2600 gcc_cv_ld_hidden=yes
2602 *-*-solaris2.1[0-9]*)
2603 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2604 # .symbolic was only added in Solaris 9 12/02.
2605 gcc_cv_ld_hidden=yes
2613 libgcc_visibility=no
2614 AC_SUBST(libgcc_visibility)
2615 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2616 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2617 libgcc_visibility=yes
2618 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2619 [Define if your assembler and linker support .hidden.])
2622 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2623 gcc_cv_ld_ro_rw_mix=unknown
2624 if test $in_tree_ld = yes ; then
2625 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2626 && test $in_tree_ld_is_elf = yes; then
2627 gcc_cv_ld_ro_rw_mix=read-write
2629 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2630 echo '.section myfoosect, "a"' > conftest1.s
2631 echo '.section myfoosect, "aw"' > conftest2.s
2632 echo '.byte 1' >> conftest2.s
2633 echo '.section myfoosect, "a"' > conftest3.s
2634 echo '.byte 0' >> conftest3.s
2635 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2636 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2637 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2638 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2639 conftest2.o conftest3.o > /dev/null 2>&1; then
2640 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2641 | sed -e '/myfoosect/!d' -e N`
2642 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2643 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2644 gcc_cv_ld_ro_rw_mix=read-only
2646 gcc_cv_ld_ro_rw_mix=read-write
2651 rm -f conftest.* conftest[123].*
2654 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2655 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2656 [Define if your linker links a mix of read-only
2657 and read-write sections into a read-write section.])
2659 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2661 gcc_AC_INITFINI_ARRAY
2663 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2664 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2672 [[# GAS versions before 2.11 do not support uleb128,
2673 # despite appearing to.
2674 # ??? There exists an elf-specific test that will crash
2675 # the assembler. Perhaps it's better to figure out whether
2676 # arbitrary sections are supported and try the test.
2677 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2678 if echo "$as_ver" | grep GNU > /dev/null; then
2679 as_vers=`echo $as_ver | sed -n \
2680 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2681 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2682 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2683 if test $as_major -eq 2 && test $as_minor -lt 11
2685 else gcc_cv_as_leb128=yes
2688 [AC_DEFINE(HAVE_AS_LEB128, 1,
2689 [Define if your assembler supports .sleb128 and .uleb128.])])
2691 # Check if we have assembler support for unwind directives.
2692 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2699 .cfi_escape 1, 2, 3, 4, 5
2703 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2704 # read-only and read-write sections, we need to make sure that the
2705 # assembler used emits read-write .eh_frame sections.
2706 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2707 if test "x$gcc_cv_objdump" != x; then
2708 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2709 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2710 gcc_cv_as_cfi_directive=no
2713 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2714 # On Solaris/x86, make sure that GCC and assembler agree on using
2715 # read-only .eh_frame sections for 64-bit.
2716 if test x$gas = xyes; then
2717 as_ix86_64_opt="--64"
2719 as_ix86_64_opt="-xarch=amd64"
2721 if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \
2722 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2723 sed -e /.eh_frame/!d -e N | \
2724 grep READONLY > /dev/null; then
2725 gcc_cv_as_cfi_directive=yes
2727 gcc_cv_as_cfi_directive=no
2731 gcc_cv_as_cfi_directive=yes
2736 # no objdump, err on the side of caution
2737 gcc_cv_as_cfi_directive=no
2740 gcc_cv_as_cfi_directive=yes
2744 gcc_cv_as_cfi_directive=yes
2747 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2748 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2752 .cfi_adjust_cfa_offset 64
2754 .cfi_adjust_cfa_offset 128
2757 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2758 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2759 gcc_cv_as_cfi_advance_working=yes
2763 # no objdump, err on the side of caution
2764 gcc_cv_as_cfi_advance_working=no
2766 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2767 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2768 [`if test $gcc_cv_as_cfi_directive = yes \
2769 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2770 [Define 0/1 if your assembler supports CFI directives.])
2772 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2773 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2774 gcc_cv_as_cfi_personality_directive, ,,
2777 .cfi_personality 0, symbol
2779 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2780 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2781 then echo 1; else echo 0; fi`],
2782 [Define 0/1 if your assembler supports .cfi_personality.])
2784 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2785 gcc_cv_as_cfi_sections_directive, ,,
2787 .cfi_sections .debug_frame, .eh_frame
2791 win32 | pe | cygwin* | mingw32*)
2792 # Need to check that we generated the correct relocation for the
2793 # .debug_frame section. This was fixed for binutils 2.21.
2794 gcc_cv_as_cfi_sections_directive=no
2795 if test "x$gcc_cv_objdump" != x; then
2796 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2797 grep secrel > /dev/null; then
2798 gcc_cv_as_cfi_sections_directive=yes
2803 gcc_cv_as_cfi_sections_directive=yes
2806 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2807 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2808 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2809 then echo 1; else echo 0; fi`],
2810 [Define 0/1 if your assembler supports .cfi_sections.])
2812 # GAS versions up to and including 2.11.0 may mis-optimize
2814 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2822 .section .eh_frame,"aw",@progbits
2824 .4byte .LECIE1-.LSCIE1
2838 .4byte .LEFDE1-.LASFDE1
2840 .4byte .LASFDE1-__FRAME_BEGIN__
2848 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2849 cat > conftest.lit <<EOF
2850 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2851 0010 01000000 12000000 18000000 00000000 ................
2852 0020 08000000 04080000 0044 .........D @&t@
2854 cat > conftest.big <<EOF
2855 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2856 0010 00000001 00000012 00000018 00000000 ................
2857 0020 00000008 04000000 0844 .........D @&t@
2859 # If the assembler didn't choke, and we can objdump,
2860 # and we got the correct data, then succeed.
2861 # The text in the here-document typically retains its unix-style line
2862 # endings, while the output of objdump will use host line endings.
2863 # Therefore, use diff -b for the comparisons.
2864 if test x$gcc_cv_objdump != x \
2865 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2866 | tail -3 > conftest.got \
2867 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2868 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2870 gcc_cv_as_eh_frame=yes
2871 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2872 gcc_cv_as_eh_frame=buggy
2874 # Uh oh, what do we do now?
2875 gcc_cv_as_eh_frame=no
2878 if test $gcc_cv_as_eh_frame = buggy; then
2879 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2880 [Define if your assembler mis-optimizes .eh_frame data.])
2883 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2884 [elf,2,12,0], [--fatal-warnings],
2885 [.section .rodata.str, "aMS", @progbits, 1])
2886 if test $gcc_cv_as_shf_merge = no; then
2887 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2888 [elf,2,12,0], [--fatal-warnings],
2889 [.section .rodata.str, "aMS", %progbits, 1])
2891 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2892 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2893 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2895 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2896 gcc_cv_as_comdat_group,
2897 [elf,2,16,0], [--fatal-warnings],
2898 [.section .text,"axG",@progbits,.foo,comdat])
2899 if test $gcc_cv_as_comdat_group = yes; then
2900 gcc_cv_as_comdat_group_percent=no
2901 gcc_cv_as_comdat_group_group=no
2903 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2904 gcc_cv_as_comdat_group_percent,
2905 [elf,2,16,0], [--fatal-warnings],
2906 [.section .text,"axG",%progbits,.foo,comdat])
2907 if test $gcc_cv_as_comdat_group_percent = yes; then
2908 gcc_cv_as_comdat_group_group=no
2911 # Sun as uses a completely different syntax.
2916 .group foo,".text%foo",#comdat
2917 .section ".text%foo", #alloc,#execinstr,#progbits
2922 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2924 .group foo,.text%foo,#comdat
2925 .section .text%foo, "ax", @progbits
2931 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2932 gcc_cv_as_comdat_group_group,
2936 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2937 gcc_cv_as_comdat_group_group=no
2941 if test x"$ld_is_gold" = xyes; then
2943 elif test $in_tree_ld = yes ; then
2945 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2946 && test $in_tree_ld_is_elf = yes; then
2949 elif echo "$ld_ver" | grep GNU > /dev/null; then
2951 if test 0"$ld_date" -lt 20050308; then
2952 if test -n "$ld_date"; then
2953 # If there was date string, but was earlier than 2005-03-08, fail
2955 elif test "$ld_vers_major" -lt 2; then
2957 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2964 *-*-solaris2.1[1-9]*)
2966 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2967 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2970 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2971 # least ld version 1.2267.
2972 if test "$ld_vers_major" -gt 1; then
2974 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2976 elif test "$ld_vers_minor" -ge 2267; then
2981 # Assume linkers other than GNU ld don't support COMDAT group.
2987 # Allow overriding the automatic COMDAT group tests above.
2988 AC_ARG_ENABLE(comdat,
2989 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2990 [comdat_group="$enable_comdat"])
2991 if test $comdat_group = no; then
2992 gcc_cv_as_comdat_group=no
2993 gcc_cv_as_comdat_group_percent=no
2994 gcc_cv_as_comdat_group_group=no
2996 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2997 [`if test $gcc_cv_as_comdat_group = yes \
2998 || test $gcc_cv_as_comdat_group_percent = yes \
2999 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3000 [Define 0/1 if your assembler and linker support COMDAT groups.])
3002 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3003 gcc_cv_as_discriminator,
3007 .loc 1 1 0 discriminator 1],,
3008 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3009 [Define if your assembler supports the .loc discriminator sub-directive.])])
3011 # Thread-local storage - the check is heavily parameterized.
3020 .section ".tdata","awT",@progbits
3023 ldq $27,__tls_get_addr($29) !literal!1
3024 lda $16,foo($29) !tlsgd!1
3025 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3026 ldq $27,__tls_get_addr($29) !literal!2
3027 lda $16,foo($29) !tlsldm!2
3028 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3029 ldq $1,foo($29) !gotdtprel
3030 ldah $2,foo($29) !dtprelhi
3031 lda $3,foo($2) !dtprello
3032 lda $4,foo($29) !dtprel
3033 ldq $1,foo($29) !gottprel
3034 ldah $2,foo($29) !tprelhi
3035 lda $3,foo($2) !tprello
3036 lda $4,foo($29) !tprel'
3039 tls_as_opt=--fatal-warnings
3041 cris-*-*|crisv32-*-*)
3043 .section ".tdata","awT",@progbits
3050 tls_as_opt=--fatal-warnings
3054 .section ".tdata","awT",@progbits
3066 .section ".tdata","awT",@progbits
3070 addil LT%foo-$tls_gdidx$,gp
3071 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3074 addil LT%foo-$tls_ldidx$,gp
3076 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3077 addil LR%foo-$tls_dtpoff$,%ret0
3078 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3080 addil LT%foo-$tls_ieoff$,gp
3081 ldw RT%foo-$tls_ieoff$(%r1),%t2
3084 addil LR%foo-$tls_leoff$,%t1
3085 ldo RR%foo-$tls_leoff$(%r1),%t2'
3088 tls_as_opt=--fatal-warnings
3092 .section ".tdata","awT",%progbits
3103 i[34567]86-*-* | x86_64-*-*)
3105 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3112 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3114 .section .tdata,"awt",@progbits'
3119 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3120 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3124 .section ".tdata","awT",@progbits'
3128 tls_as_opt="--fatal-warnings"
3132 conftest_s="$conftest_s
3136 leal foo@tlsgd(,%ebx,1), %eax
3137 leal foo@tlsldm(%ebx), %eax
3138 leal foo@dtpoff(%eax), %edx
3139 movl foo@gottpoff(%ebx), %eax
3140 subl foo@gottpoff(%ebx), %eax
3141 addl foo@gotntpoff(%ebx), %eax
3142 movl foo@indntpoff, %eax
3143 movl \$foo@tpoff, %eax
3144 subl \$foo@tpoff, %eax
3145 leal foo@ntpoff(%ecx), %eax"
3148 if test x$on_solaris = xyes; then
3150 yes) tls_as_opt="$tls_as_opt --64" ;;
3151 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3154 conftest_s="$conftest_s
3158 leaq foo@tlsgd(%rip), %rdi
3159 leaq foo@tlsld(%rip), %rdi
3160 leaq foo@dtpoff(%rax), %rdx
3161 movq foo@gottpoff(%rip), %rax
3162 movq \$foo@tpoff, %rax"
3168 .section ".tdata","awT",@progbits
3171 addl r16 = @ltoff(@dtpmod(foo#)), gp
3172 addl r17 = @ltoff(@dtprel(foo#)), gp
3173 addl r18 = @ltoff(@tprel(foo#)), gp
3174 addl r19 = @dtprel(foo#), gp
3175 adds r21 = @dtprel(foo#), r13
3176 movl r23 = @dtprel(foo#)
3177 addl r20 = @tprel(foo#), gp
3178 adds r22 = @tprel(foo#), r13
3179 movl r24 = @tprel(foo#)'
3182 tls_as_opt=--fatal-warnings
3186 .section .tdata,"awT",@progbits
3190 addik r5,r20,x@TLSGD
3191 addik r5,r20,x@TLSLDM'
3194 tls_as_opt='--fatal-warnings'
3198 .section .tdata,"awT",@progbits
3202 addiu $4, $28, %tlsgd(x)
3203 addiu $4, $28, %tlsldm(x)
3204 lui $4, %dtprel_hi(x)
3205 addiu $4, $4, %dtprel_lo(x)
3206 lw $4, %gottprel(x)($28)
3207 lui $4, %tprel_hi(x)
3208 addiu $4, $4, %tprel_lo(x)'
3211 tls_as_opt='-32 --fatal-warnings'
3215 .section .tdata,"awT",@progbits
3220 move.l x@TLSGD(%a5),%a0
3221 move.l x@TLSLDM(%a5),%a0
3222 move.l x@TLSLDO(%a5),%a0
3223 move.l x@TLSIE(%a5),%a0
3224 move.l x@TLSLE(%a5),%a0'
3227 tls_as_opt='--fatal-warnings'
3231 .section ".tdata","awT",@progbits'
3234 tls_as_opt="--fatal-warnings"
3238 .section ".tdata","awT",%progbits
3242 add x0, x0, #:tlsgd_lo12:x
3247 tls_as_opt='--fatal-warnings'
3251 .extern __get_tpointer
3269 .section ".tdata","awT",@progbits
3277 addi 3,2,ld0@got@tlsgd
3283 addi 3,2,x1@got@tlsld
3289 addis 9,3,x2@dtprel@ha
3290 addi 9,9,x2@dtprel@l
3293 ld 9,x3@got@dtprel(2)
3299 tls_as_opt="-a64 --fatal-warnings"
3303 .section ".tdata","awT",@progbits
3311 addi 3,31,ld0@got@tlsgd
3313 addi 3,31,x1@got@tlsld
3316 addis 9,3,x2@dtprel@ha
3317 addi 9,9,x2@dtprel@l
3318 lwz 9,x3@got@tprel(31)
3321 addis 9,2,x2@tprel@ha
3322 addi 9,9,x2@tprel@l'
3325 tls_as_opt="-a32 --fatal-warnings"
3329 .section ".tdata","awT",@progbits
3338 l %r1,foo@GOTNTPOFF(%r12)
3339 l %r1,0(%r1):tls_load:foo
3340 bas %r14,0(%r1,%r13):tls_gdcall:foo
3341 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3344 tls_as_opt="-m31 --fatal-warnings"
3348 .section ".tdata","awT",@progbits
3356 lg %r1,foo@GOTNTPOFF(%r12)
3357 larl %r1,foo@INDNTPOFF
3358 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3359 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3362 tls_as_opt="-m64 -Aesame --fatal-warnings"
3364 sh-*-* | sh[123456789lbe]*-*-*)
3366 .section ".tdata","awT",@progbits
3376 tls_as_opt=--fatal-warnings
3380 sparc*-sun-solaris2.*)
3387 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3389 .section ".tdata",#alloc,#write,#tls'
3394 .section ".tdata","awT",@progbits'
3397 tls_as_opt="-32 --fatal-warnings"
3399 conftest_s="$conftest_s
3402 sethi %tgd_hi22(foo), %o0
3403 add %o0, %tgd_lo10(foo), %o1
3404 add %l7, %o1, %o0, %tgd_add(foo)
3405 call __tls_get_addr, %tgd_call(foo)
3406 sethi %tldm_hi22(foo), %l1
3407 add %l1, %tldm_lo10(foo), %l2
3408 add %l7, %l2, %o0, %tldm_add(foo)
3409 call __tls_get_addr, %tldm_call(foo)
3410 sethi %tldo_hix22(foo), %l3
3411 xor %l3, %tldo_lox10(foo), %l4
3412 add %o0, %l4, %l5, %tldo_add(foo)
3413 sethi %tie_hi22(foo), %o3
3414 add %o3, %tie_lo10(foo), %o3
3415 ld [%l7 + %o3], %o2, %tie_ld(foo)
3416 add %g7, %o2, %o4, %tie_add(foo)
3417 sethi %tle_hix22(foo), %l1
3418 xor %l1, %tle_lox10(foo), %o5
3419 ld [%g7 + %o5], %o1"
3423 .section ".tdata","awT",@progbits
3426 addli r0, zero, tls_gd(foo)
3427 auli r0, zero, tls_gd_ha16(foo)
3428 addli r0, r0, tls_gd_lo16(foo)
3430 addli r0, zero, tls_ie(foo)
3431 auli r0, r0, tls_ie_ha16(foo)
3432 addli r0, r0, tls_ie_lo16(foo)'
3435 tls_as_opt="--fatal-warnings"
3439 .section ".tdata","awT",@progbits
3442 shl16insli r0, zero, hw0_last_tls_gd(foo)
3443 shl16insli r0, zero, hw1_last_tls_gd(foo)
3444 shl16insli r0, r0, hw0_tls_gd(foo)
3446 shl16insli r0, zero, hw1_last_tls_ie(foo)
3447 shl16insli r0, r0, hw0_tls_ie(foo)'
3450 tls_as_opt="--fatal-warnings"
3454 .section ".tdata","awT",@progbits
3457 movi a8, foo@TLSFUNC
3458 movi a10, foo@TLSARG
3459 callx8.tls a8, foo@TLSCALL'
3466 if test "x$enable_tls" = xno ; then
3467 : # TLS explicitly disabled.
3468 elif test "x$enable_tls" = xyes ; then
3469 set_have_as_tls=yes # TLS explicitly enabled.
3470 elif test -z "$tls_first_major"; then
3471 : # If we don't have a check, assume no support.
3473 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3474 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3475 [set_have_as_tls=yes])
3477 if test $set_have_as_tls = yes ; then
3478 AC_DEFINE(HAVE_AS_TLS, 1,
3479 [Define if your assembler and linker support thread-local storage.])
3482 # Target-specific assembler checks.
3484 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3485 gcc_cv_ld_static_dynamic=no
3486 gcc_cv_ld_static_option='-Bstatic'
3487 gcc_cv_ld_dynamic_option='-Bdynamic'
3488 if test $in_tree_ld = yes ; then
3489 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3490 gcc_cv_ld_static_dynamic=yes
3492 elif test x$gcc_cv_ld != x; then
3493 # Check if linker supports -Bstatic/-Bdynamic option
3494 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3495 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3496 gcc_cv_ld_static_dynamic=yes
3499 # AIX ld uses -b flags
3500 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3501 gcc_cv_ld_static_dynamic=yes
3502 gcc_cv_ld_static_option="-bstatic"
3503 gcc_cv_ld_dynamic_option="-bdynamic"
3505 # HP-UX ld uses -a flags to select between shared and archive.
3507 if test x"$gnu_ld" = xno; then
3508 gcc_cv_ld_static_dynamic=yes
3509 gcc_cv_ld_static_option="-aarchive_shared"
3510 gcc_cv_ld_dynamic_option="-adefault"
3513 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3515 gcc_cv_ld_static_dynamic=yes
3520 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3521 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3522 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3523 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3524 [Define to the linker option to disable use of shared objects.])
3525 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3526 [Define to the linker option to enable use of shared objects.])
3528 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3530 if test x"$demangler_in_ld" = xyes; then
3531 AC_MSG_CHECKING(linker --demangle support)
3532 gcc_cv_ld_demangle=no
3533 if test $in_tree_ld = yes; then
3534 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3535 gcc_cv_ld_demangle=yes
3537 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3538 # Check if the GNU linker supports --demangle option
3539 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3540 gcc_cv_ld_demangle=yes
3543 if test x"$gcc_cv_ld_demangle" = xyes; then
3544 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3545 [Define if your linker supports --demangle option.])
3547 AC_MSG_RESULT($gcc_cv_ld_demangle)
3550 AC_MSG_CHECKING(linker plugin support)
3552 if test -f liblto_plugin.la; then
3553 save_ld_ver="$ld_ver"
3554 save_ld_vers_major="$ld_vers_major"
3555 save_ld_vers_minor="$ld_vers_minor"
3556 save_ld_is_gold="$ld_is_gold"
3560 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3562 # FIXME: ld_is_gold?
3563 ld_vers_major="$gcc_cv_gld_major_version"
3564 ld_vers_minor="$gcc_cv_gld_minor_version"
3566 # Determine plugin linker version.
3567 # FIXME: Partial duplicate from above, generalize.
3569 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3570 if echo "$ld_ver" | grep GNU > /dev/null; then
3571 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3573 ld_vers=`echo $ld_ver | sed -n \
3574 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3576 ld_vers=`echo $ld_ver | sed -n \
3577 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3579 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3580 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3585 # Determine plugin support.
3586 if echo "$ld_ver" | grep GNU > /dev/null; then
3587 # Require GNU ld or gold 2.21+ for plugin support by default.
3588 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3590 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3591 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3596 ld_ver="$save_ld_ver"
3597 ld_vers_major="$save_ld_vers_major"
3598 ld_vers_minor="$save_ld_vers_minor"
3599 ld_is_gold="$save_ld_is_gold"
3601 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3602 [Define to the level of your linker's plugin support.])
3603 AC_MSG_RESULT($gcc_cv_lto_plugin)
3607 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3608 [-mabi=lp64], [.text],,,)
3609 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3610 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3611 [Define if your assembler supports the -mabi option.])
3613 if test x$with_abi = xilp32; then
3614 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3615 Upgrade the Assembler.])
3617 if test x"$with_multilib_list" = xdefault; then
3618 TM_MULTILIB_CONFIG=lp64
3620 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3621 for aarch64_multilib in ${aarch64_multilibs}; do
3622 case ${aarch64_multilib} in
3624 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3625 Upgrade the Assembler.])
3633 # Check if we have binutils support for relocations types needed by -fpic
3634 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3637 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3638 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3639 [Define if your assembler supports relocs needed by -fpic.])])
3640 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3641 AC_ARG_ENABLE(fix-cortex-a53-835769,
3643 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3644 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3645 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3646 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3651 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3656 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3657 Valid choices are 'yes' and 'no'.])
3663 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3664 AC_ARG_ENABLE(fix-cortex-a53-843419,
3666 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3667 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3668 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3669 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3674 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3679 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3680 Valid choices are 'yes' and 'no'.])
3688 # All TARGET_ABI_OSF targets.
3689 alpha*-*-linux* | alpha*-*-*bsd*)
3690 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3691 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3694 extbl $3, $2, $3 !lituse_bytoff!1
3695 ldq $2, a($29) !literal!1
3696 ldq $4, b($29) !literal!2
3697 ldq_u $3, 0($2) !lituse_base!1
3698 ldq $27, f($29) !literal!5
3699 jsr $26, ($27), f !lituse_jsr!5
3700 ldah $29, 0($26) !gpdisp!3
3701 lda $0, c($29) !gprel
3702 ldah $1, d($29) !gprelhigh
3703 lda $1, d($1) !gprellow
3704 lda $29, 0($29) !gpdisp!3],,
3705 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3706 [Define if your assembler supports explicit relocations.])])
3707 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3708 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3711 ldq $27, a($29) !literal!1
3712 jsr $26, ($27), a !lituse_jsrdirect!1],,
3713 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3714 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3718 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3719 [--mlink-relax], [.text],,
3720 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3721 [Define if your avr assembler supports --mlink-relax option.])])
3723 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3725 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3726 [Define if your avr assembler supports -mrmw option.])])
3730 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3731 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3732 [-no-mul-bug-abort], [.text],,
3733 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3734 [Define if your assembler supports the -no-mul-bug-abort option.])])
3738 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3739 [.register %g2, #scratch],,
3740 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3741 [Define if your assembler supports .register.])])
3743 gcc_GAS_CHECK_FEATURE([@%:@nobits], gcc_cv_as_sparc_nobits,,,
3744 [.section "nobits",#alloc,#write,#nobits
3745 .section "progbits",#alloc,#write,#progbits])
3746 AC_DEFINE_UNQUOTED(HAVE_AS_SPARC_NOBITS,
3747 [`if test $gcc_cv_as_sparc_nobits = yes; then echo 1; else echo 0; fi`],
3748 [Define to 1 if your assembler supports #nobits, 0 otherwise.])
3750 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3752 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3753 [Define if your assembler supports -relax option.])])
3755 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3756 gcc_cv_as_sparc_gotdata_op,,
3763 sethi %gdop_hix22(foo), %g1
3764 xor %g1, %gdop_lox10(foo), %g1
3765 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3766 [if test x$gcc_cv_ld != x \
3767 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3768 if test x$gcc_cv_objdump != x; then
3769 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3770 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3771 gcc_cv_as_sparc_gotdata_op=no
3773 gcc_cv_as_sparc_gotdata_op=yes
3778 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3779 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3781 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3782 gcc_cv_as_sparc_ua_pcrel,,
3790 .uaword %r_disp32(foo)],
3791 [if test x$gcc_cv_ld != x \
3792 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3793 gcc_cv_as_sparc_ua_pcrel=yes
3796 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3797 [Define if your assembler and linker support unaligned PC relative relocs.])
3799 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3800 gcc_cv_as_sparc_ua_pcrel_hidden,,
3805 .uaword %r_disp32(foo)
3806 .byte 0x32, 0x33, 0x34
3811 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3812 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3813 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3814 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3815 if $gcc_cv_objdump -R conftest 2> /dev/null \
3816 | grep 'DISP32' > /dev/null 2>&1; then
3819 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3823 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3824 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3825 ]) # unaligned pcrel relocs
3827 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3828 gcc_cv_as_sparc_offsetable_lo10,,
3831 or %g1, %lo(ab) + 12, %g1
3832 or %g1, %lo(ab + 12), %g1],
3833 [if test x$gcc_cv_objdump != x \
3834 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3835 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3836 gcc_cv_as_sparc_offsetable_lo10=yes
3838 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3839 [Define if your assembler supports offsetable %lo().])])
3841 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3842 gcc_cv_as_sparc_fmaf,,
3845 .register %g2, #scratch
3846 .register %g3, #scratch
3848 fmaddd %f0, %f2, %f4, %f6
3849 addxccc %g1, %g2, %g3
3850 fsrl32 %f2, %f4, %f8
3851 fnaddd %f10, %f12, %f14],,
3852 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3853 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3855 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3856 gcc_cv_as_sparc_sparc4,,
3859 .register %g2, #scratch
3860 .register %g3, #scratch
3863 1: cwbneg %g2, %g3, 1f
3866 aes_kexpand0 %f4, %f6, %f8
3867 des_round %f38, %f40, %f42, %f44
3868 camellia_f %f54, %f56, %f58, %f60
3869 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3870 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3871 [Define if your assembler supports SPARC4 instructions.])])
3873 gcc_GAS_CHECK_FEATURE([LEON instructions],
3874 gcc_cv_as_sparc_leon,,
3877 .register %g2, #scratch
3878 .register %g3, #scratch
3882 casa [[%g2]] 0xb, %g3, %g1],,
3883 [AC_DEFINE(HAVE_AS_LEON, 1,
3884 [Define if your assembler supports LEON instructions.])])
3888 i[34567]86-*-* | x86_64-*-*)
3892 # Full C++ conformance when using a shared libstdc++-v3 requires some
3893 # support from the Cygwin DLL, which in more recent versions exports
3894 # wrappers to aid in interposing and redirecting operators new, delete,
3895 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3896 # are configuring for a version of Cygwin that exports the wrappers.
3897 if test x$host = x$target && test x$host_cpu = xi686; then
3898 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3900 # Can't check presence of libc functions during cross-compile, so
3901 # we just have to assume we're building for an up-to-date target.
3902 gcc_ac_cygwin_dll_wrappers=yes
3904 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3905 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3906 [Define if you want to generate code by default that assumes that the
3907 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3910 cygwin* | pe | mingw32* | interix*)
3911 # Recent binutils allows the three-operand form of ".comm" on PE. This
3912 # definition is used unconditionally to initialise the default state of
3913 # the target option variable that governs usage of the feature.
3914 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3915 [2,19,52],,[.comm foo,1,32])
3916 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3917 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3918 [Define if your assembler supports specifying the alignment
3919 of objects allocated using the GAS .comm command.])
3920 # Used for DWARF 2 in PE
3921 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3922 gcc_cv_as_ix86_pe_secrel32,
3928 [if test x$gcc_cv_ld != x \
3929 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3930 gcc_cv_as_ix86_pe_secrel32=yes
3933 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3934 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3935 # Test if the assembler supports the extended form of the .section
3936 # directive that specifies section alignment. LTO support uses this,
3937 # but normally only after installation, so we warn but don't fail the
3938 # configure if LTO is enabled but the assembler does not support it.
3939 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3940 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3941 if test x$gcc_cv_as_section_has_align != xyes; then
3942 case ",$enable_languages," in
3944 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3951 # Test if the assembler supports the section flag 'e' for specifying
3952 # an excluded section.
3953 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3954 [2,22,51], [--fatal-warnings],
3957 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3958 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3959 [Define if your assembler supports specifying the section flag e.])
3961 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3962 gcc_cv_as_ix86_filds,,,
3963 [filds (%ebp); fists (%ebp)],,
3964 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3965 [Define if your assembler uses filds and fists mnemonics.])])
3967 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3968 gcc_cv_as_ix86_fildq,,,
3969 [fildq (%ebp); fistpq (%ebp)],,
3970 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3971 [Define if your assembler uses fildq and fistq mnemonics.])])
3973 gcc_GAS_CHECK_FEATURE([cmov syntax],
3974 gcc_cv_as_ix86_cmov_sun_syntax,,,
3975 [cmovl.l %edx, %eax],,
3976 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3977 [Define if your assembler supports the Sun syntax for cmov.])])
3979 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3980 gcc_cv_as_ix86_ffreep,,,
3982 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3983 [Define if your assembler supports the ffreep mnemonic.])])
3985 gcc_GAS_CHECK_FEATURE([.quad directive],
3986 gcc_cv_as_ix86_quad,,,
3988 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3989 [Define if your assembler supports the .quad directive.])])
3991 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3992 gcc_cv_as_ix86_sahf,,,
3995 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3996 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3998 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
3999 gcc_cv_as_ix86_interunit_movq,,,
4003 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4004 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4005 [Define if your assembler supports interunit movq mnemonic.])
4007 gcc_GAS_CHECK_FEATURE([hle prefixes],
4008 gcc_cv_as_ix86_hle,,,
4009 [lock xacquire cmpxchg %esi, (%ecx)],,
4010 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4011 [Define if your assembler supports HLE prefixes.])])
4013 gcc_GAS_CHECK_FEATURE([swap suffix],
4014 gcc_cv_as_ix86_swap,,,
4015 [movl.s %esp, %ebp],,
4016 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4017 [Define if your assembler supports the swap suffix.])])
4019 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4020 gcc_cv_as_ix86_diff_sect_delta,,,
4028 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4029 [Define if your assembler supports the subtraction of symbols in different sections.])])
4031 # These two are used unconditionally by i386.[ch]; it is to be defined
4032 # to 1 if the feature is present, 0 otherwise.
4033 as_ix86_gotoff_in_data_opt=
4034 if test x$gas = xyes; then
4035 as_ix86_gotoff_in_data_opt="--32"
4037 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4038 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4039 [$as_ix86_gotoff_in_data_opt],
4045 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4046 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4047 [Define true if the assembler supports '.long foo@GOTOFF'.])
4049 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4050 gcc_cv_as_ix86_rep_lock_prefix,,,
4056 lock addl %edi, (%eax,%esi)
4057 lock orl $0, (%esp)],,
4058 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4059 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4061 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4062 gcc_cv_as_ix86_ud2,,,
4064 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4065 [Define if your assembler supports the 'ud2' mnemonic.])])
4067 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4068 gcc_cv_as_ix86_tlsgdplt,,,
4069 [call tls_gd@tlsgdplt],
4070 [if test x$gcc_cv_ld != x \
4071 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4072 gcc_cv_as_ix86_tlsgdplt=yes
4075 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4076 [Define if your assembler and linker support @tlsgdplt.])])
4079 .section .tdata,"aw'$tls_section_flag'",@progbits
4081 .section .text,"ax",@progbits
4082 call tls_ld@tlsldmplt'
4083 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4084 gcc_cv_as_ix86_tlsldmplt,,,
4086 [if test x$gcc_cv_ld != x \
4087 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4088 gcc_cv_as_ix86_tlsldmplt=yes
4091 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4092 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4093 [Define to 1 if your assembler and linker support @tlsldmplt.])
4095 # Enforce 32-bit output with gas and gld.
4096 if test x$gas = xyes; then
4097 as_ix86_tls_ldm_opt="--32"
4099 if echo "$ld_ver" | grep GNU > /dev/null; then
4100 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4101 ld_ix86_tls_ldm_opt="-melf_i386_sol2"
4103 ld_ix86_tls_ldm_opt="-melf_i386"
4107 .section .text,"ax",@progbits
4109 .type _start, @function
4111 leal value@tlsldm(%ebx), %eax
4112 call ___tls_get_addr@plt
4114 .section .tdata,"aw'$tls_section_flag'",@progbits
4115 .type value, @object
4117 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4118 gcc_cv_as_ix86_tlsldm,,
4119 [$as_ix86_tls_ldm_opt],
4121 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4122 && $gcc_cv_ld $ld_ix86_tls_ldm_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4123 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4124 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4125 gcc_cv_as_ix86_tlsldm=yes
4129 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4130 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4131 [Define to 1 if your assembler and linker support @tlsldm.])
4136 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4137 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4139 addl r15 = @ltoffx(x#), gp
4141 ld8.mov r16 = [[r15]], x#],,
4142 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4143 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4149 *-*-aix*) conftest_s=' .machine "pwr5"
4153 gcc_GAS_CHECK_FEATURE([.machine directive support],
4154 gcc_cv_as_machine_directive,,,
4155 [ .machine ppc7400])
4156 if test x$gcc_cv_as_machine_directive != xyes; then
4157 echo "*** This target requires an assembler supporting \".machine\"" >&2
4158 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4159 test x$build = x$target && exit 1
4163 *) conftest_s=' .machine power4
4168 gcc_GAS_CHECK_FEATURE([mfcr field support],
4169 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4171 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4172 [Define if your assembler supports mfcr field.])])
4175 *-*-aix*) conftest_s=' .machine "pwr5"
4178 *) conftest_s=' .machine power5
4183 gcc_GAS_CHECK_FEATURE([popcntb support],
4184 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4186 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4187 [Define if your assembler supports popcntb field.])])
4190 *-*-aix*) conftest_s=' .machine "pwr5x"
4193 *) conftest_s=' .machine power5
4198 gcc_GAS_CHECK_FEATURE([fp round support],
4199 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4201 [AC_DEFINE(HAVE_AS_FPRND, 1,
4202 [Define if your assembler supports fprnd.])])
4205 *-*-aix*) conftest_s=' .machine "pwr6"
4208 *) conftest_s=' .machine power6
4213 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4214 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4216 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4217 [Define if your assembler supports mffgpr and mftgpr.])])
4220 *-*-aix*) conftest_s=' .csect .text[[PR]]
4222 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4226 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4227 *) conftest_s=' .text
4229 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4232 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4233 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4235 [AC_DEFINE(HAVE_AS_REL16, 1,
4236 [Define if your assembler supports R_PPC_REL16 relocs.])])
4239 *-*-aix*) conftest_s=' .machine "pwr6"
4242 *) conftest_s=' .machine power6
4247 gcc_GAS_CHECK_FEATURE([compare bytes support],
4248 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4250 [AC_DEFINE(HAVE_AS_CMPB, 1,
4251 [Define if your assembler supports cmpb.])])
4254 *-*-aix*) conftest_s=' .machine "pwr6"
4257 *) conftest_s=' .machine power6
4262 gcc_GAS_CHECK_FEATURE([decimal float support],
4263 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4265 [AC_DEFINE(HAVE_AS_DFP, 1,
4266 [Define if your assembler supports DFP instructions.])])
4269 *-*-aix*) conftest_s=' .machine "pwr7"
4272 *) conftest_s=' .machine power7
4277 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4278 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4280 [AC_DEFINE(HAVE_AS_VSX, 1,
4281 [Define if your assembler supports VSX instructions.])])
4284 *-*-aix*) conftest_s=' .machine "pwr7"
4287 *) conftest_s=' .machine power7
4292 gcc_GAS_CHECK_FEATURE([popcntd support],
4293 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4295 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4296 [Define if your assembler supports POPCNTD instructions.])])
4299 *-*-aix*) conftest_s=' .machine "pwr8"
4300 .csect .text[[PR]]';;
4301 *) conftest_s=' .machine power8
4305 gcc_GAS_CHECK_FEATURE([power8 support],
4306 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4308 [AC_DEFINE(HAVE_AS_POWER8, 1,
4309 [Define if your assembler supports POWER8 instructions.])])
4312 *-*-aix*) conftest_s=' .csect .text[[PR]]
4314 *) conftest_s=' .text
4318 gcc_GAS_CHECK_FEATURE([lwsync support],
4319 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4321 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4322 [Define if your assembler supports LWSYNC instructions.])])
4325 *-*-aix*) conftest_s=' .machine "476"
4328 *) conftest_s=' .machine "476"
4333 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4334 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4336 [AC_DEFINE(HAVE_AS_DCI, 1,
4337 [Define if your assembler supports the DCI/ICI instructions.])])
4339 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4340 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4341 [.gnu_attribute 4,1],,
4342 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4343 [Define if your assembler supports .gnu_attribute.])])
4345 gcc_GAS_CHECK_FEATURE([tls marker support],
4346 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4347 [ bl __tls_get_addr(x@tlsgd)],,
4348 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4349 [Define if your assembler supports arg info for __tls_get_addr.])])
4353 gcc_GAS_CHECK_FEATURE([.ref support],
4354 gcc_cv_as_aix_ref, [2,21,0],,
4355 [ .csect stuff[[rw]]
4361 [AC_DEFINE(HAVE_AS_REF, 1,
4362 [Define if your assembler supports .ref])])
4368 gcc_GAS_CHECK_FEATURE([dwarf location lists section support],
4369 gcc_cv_as_aix_dwloc, [2,21,0],,
4372 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4373 [Define if your assembler supports .dwsect 0xB0000])])
4379 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4380 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4381 [ lw $4,%gp_rel(foo)($4)],,
4382 [if test x$target_cpu_default = x
4383 then target_cpu_default=MASK_EXPLICIT_RELOCS
4384 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4387 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4388 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4389 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4390 [Define if the assembler understands -mno-shared.])])
4392 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4393 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4394 [.gnu_attribute 4,1],,
4395 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4396 [Define if your assembler supports .gnu_attribute.])])
4398 gcc_GAS_CHECK_FEATURE([.module support],
4399 gcc_cv_as_mips_dot_module,,[-32],
4402 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4403 [Define if your assembler supports .module.])])
4404 if test x$gcc_cv_as_mips_dot_module = xno \
4405 && test x$with_fp_32 != x; then
4407 [Requesting --with-fp-32= requires assembler support for .module.])
4410 gcc_GAS_CHECK_FEATURE([.micromips support],
4411 gcc_cv_as_micromips_support,,[--fatal-warnings],
4413 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4414 [Define if your assembler supports the .set micromips directive])])
4416 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4417 gcc_cv_as_mips_dtprelword, [2,18,0],,
4418 [.section .tdata,"awT",@progbits
4422 .dtprelword x+0x8000],,
4423 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4424 [Define if your assembler supports .dtprelword.])])
4426 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4427 gcc_cv_as_mips_dspr1_mult,,,
4437 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4438 [Define if your assembler supports DSPR1 mult.])])
4440 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4441 gcc_cv_as_ld_jalr_reloc=no
4442 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4443 if test $in_tree_ld = yes ; then
4444 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4445 && test $in_tree_ld_is_elf = yes; then
4446 gcc_cv_as_ld_jalr_reloc=yes
4448 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4449 echo ' .ent x' > conftest.s
4450 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4451 echo ' lw $25,%call16(y)($28)' >> conftest.s
4452 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4453 echo '1: jalr $25' >> conftest.s
4454 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4455 echo '1: jalr $25' >> conftest.s
4456 echo ' .end x' >> conftest.s
4457 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4458 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4459 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4460 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4461 gcc_cv_as_ld_jalr_reloc=yes
4467 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4468 if test x$target_cpu_default = x; then
4469 target_cpu_default=MASK_RELAX_PIC_CALLS
4471 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4474 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4476 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4477 [gcc_cv_ld_mips_personality_relaxation],
4478 [gcc_cv_ld_mips_personality_relaxation=no
4479 if test $in_tree_ld = yes ; then
4480 if test "$gcc_cv_gld_major_version" -eq 2 \
4481 -a "$gcc_cv_gld_minor_version" -ge 21 \
4482 -o "$gcc_cv_gld_major_version" -gt 2; then
4483 gcc_cv_ld_mips_personality_relaxation=yes
4485 elif test x$gcc_cv_as != x \
4486 -a x$gcc_cv_ld != x \
4487 -a x$gcc_cv_readelf != x ; then
4488 cat > conftest.s <<EOF
4490 .cfi_personality 0x80,indirect_ptr
4497 .section .data,"aw",@progbits
4501 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4502 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4503 if $gcc_cv_readelf -d conftest 2>&1 \
4504 | grep TEXTREL > /dev/null 2>&1; then
4506 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4507 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4510 gcc_cv_ld_mips_personality_relaxation=yes
4514 rm -f conftest.s conftest.o conftest])
4515 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4516 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4517 [Define if your linker can relax absolute .eh_frame personality
4518 pointers into PC-relative form.])
4521 gcc_GAS_CHECK_FEATURE([-mnan= support],
4522 gcc_cv_as_mips_nan,,
4524 [AC_DEFINE(HAVE_AS_NAN, 1,
4525 [Define if the assembler understands -mnan=.])])
4526 if test x$gcc_cv_as_mips_nan = xno \
4527 && test x$with_nan != x; then
4529 [Requesting --with-nan= requires assembler support for -mnan=])
4533 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4534 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4535 [.gnu_attribute 8,1],,
4536 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4537 [Define if your assembler supports .gnu_attribute.])])
4541 # Mips and HP-UX need the GNU assembler.
4542 # Linux on IA64 might be able to use the Intel assembler.
4545 mips*-*-* | *-*-hpux* )
4546 if test x$gas_flag = xyes \
4547 || test x"$host" != x"$build" \
4548 || test ! -x "$gcc_cv_as" \
4549 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4552 echo "*** This configuration requires the GNU assembler" >&2
4558 # ??? Not all targets support dwarf2 debug_line, even within a version
4559 # of gas. Moreover, we need to emit a valid instruction to trigger any
4560 # info to the output file. So, as supported targets are added to gas 2.11,
4561 # add some instruction here to (also) show we expect this might work.
4562 # ??? Once 2.11 is released, probably need to add first known working
4563 # version to the per-target configury.
4565 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4566 | mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
4567 | visium | xstormy16 | xtensa)
4577 if test x"$insn" != x; then
4579 .file 1 \"conftest.s\"
4582 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4583 gcc_cv_as_dwarf2_debug_line,
4584 [elf,2,11,0],, [$conftest_s],
4585 [if test x$gcc_cv_objdump != x \
4586 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4587 | grep debug_line > /dev/null 2>&1; then
4588 gcc_cv_as_dwarf2_debug_line=yes
4591 # The .debug_line file table must be in the exact order that
4592 # we specified the files, since these indices are also used
4593 # by DW_AT_decl_file. Approximate this test by testing if
4594 # the assembler bitches if the same index is assigned twice.
4595 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4596 gcc_cv_as_dwarf2_file_buggy,,,
4600 if test $gcc_cv_as_dwarf2_debug_line = yes \
4601 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4602 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4603 [Define if your assembler supports dwarf2 .file/.loc directives,
4604 and preserves file table indices exactly as given.])
4607 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4608 gcc_cv_as_gdwarf2_flag,
4609 [elf,2,11,0], [--gdwarf2], [$insn],,
4610 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4611 [Define if your assembler supports the --gdwarf2 option.])])
4613 gcc_GAS_CHECK_FEATURE([--gstabs option],
4614 gcc_cv_as_gstabs_flag,
4615 [elf,2,11,0], [--gstabs], [$insn],,
4616 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4617 [Define if your assembler supports the --gstabs option.])])
4619 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4620 gcc_cv_as_debug_prefix_map_flag,
4621 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4622 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4623 [Define if your assembler supports the --debug-prefix-map option.])])
4626 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4627 gcc_cv_as_compress_debug,,[--compress-debug-sections],,
4628 [# gas compiled without zlib cannot compress debug sections and warns
4629 # about it, but still exits successfully. So check for this, too.
4630 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4632 gcc_cv_as_compress_debug=0
4633 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4635 gcc_cv_as_compress_debug=1
4636 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4637 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4639 gcc_cv_as_compress_debug=0
4640 # FIXME: Future gas versions will support ELF gABI style via
4641 # --compress-debug-sections[=type].
4643 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4644 [Define to the level of your assembler's compressed debug section support.])
4645 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4646 [Define to the assembler option to enable compressed debug sections.])
4647 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4648 [Define to the assembler option to disable compressed debug sections.])
4650 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4653 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4654 [Define if your assembler supports .lcomm with an alignment field.])])
4656 if test x$with_sysroot = x && test x$host = x$target \
4657 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4658 && test "$prefix" != "NONE"; then
4659 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4660 [Define to PREFIX/include if cpp should also search that directory.])
4663 # Determine the version of glibc, if any, used on the target.
4664 AC_MSG_CHECKING([for target glibc version])
4665 AC_ARG_WITH([glibc-version],
4666 [AS_HELP_STRING([--with-glibc-version=M.N],
4667 [assume GCC used with glibc version M.N or later])], [
4668 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4669 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4670 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4672 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4674 glibc_version_major=0
4675 glibc_version_minor=0
4676 [if test -f $target_header_dir/features.h \
4677 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4678 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4679 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4680 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4682 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4683 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
4684 [GNU C Library major version number used on the target, or 0.])
4685 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
4686 [GNU C Library minor version number used on the target, or 0.])
4688 AC_ARG_ENABLE(gnu-unique-object,
4689 [AS_HELP_STRING([--enable-gnu-unique-object],
4690 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4691 [case $enable_gnu_unique_object in
4693 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4694 Valid choices are 'yes' and 'no'.]) ;;
4696 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4698 [.type foo, '$target_type_format_char'gnu_unique_object],,
4699 # We need to unquote above to to use the definition from config.gcc.
4700 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4701 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4703 if test x$enable_gnu_unique_object = xyes; then
4704 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4705 [Define if your assembler supports @gnu_unique_object.])
4708 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4709 [gcc_cv_as_line_zero],
4710 [gcc_cv_as_line_zero=no
4711 if test $in_tree_gas = yes; then
4712 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4713 elif test "x$gcc_cv_as" != x; then
4714 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4715 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4716 test "x`cat conftest.out`" = x
4718 gcc_cv_as_line_zero=yes
4720 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4721 cat conftest.s >&AS_MESSAGE_LOG_FD
4722 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4723 cat conftest.out >&AS_MESSAGE_LOG_FD
4725 rm -f conftest.o conftest.s conftest.out
4727 if test "x$gcc_cv_as_line_zero" = xyes; then
4728 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4729 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4732 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4733 gcc_cv_ld_eh_frame_hdr=no
4734 if test $in_tree_ld = yes ; then
4735 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4736 && test $in_tree_ld_is_elf = yes; then
4737 gcc_cv_ld_eh_frame_hdr=yes
4739 elif test x$gcc_cv_ld != x; then
4740 if echo "$ld_ver" | grep GNU > /dev/null; then
4741 # Check if linker supports --eh-frame-hdr option
4742 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4743 gcc_cv_ld_eh_frame_hdr=yes
4748 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4749 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4750 gcc_cv_ld_eh_frame_hdr=yes
4756 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4757 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4758 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4759 [Define if your linker supports .eh_frame_hdr.])
4761 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4763 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4764 gcc_cv_ld_eh_frame_ciev3=no
4765 if test $in_tree_ld = yes ; then
4766 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4767 && test $in_tree_ld_is_elf = yes; then
4768 gcc_cv_ld_eh_frame_ciev3=yes
4770 elif test x$gcc_cv_ld != x; then
4771 if echo "$ld_ver" | grep GNU > /dev/null; then
4772 gcc_cv_ld_eh_frame_ciev3=yes
4773 if test 0"$ld_date" -lt 20040513; then
4774 if test -n "$ld_date"; then
4775 # If there was date string, but was earlier than 2004-05-13, fail
4776 gcc_cv_ld_eh_frame_ciev3=no
4777 elif test "$ld_vers_major" -lt 2; then
4778 gcc_cv_ld_eh_frame_ciev3=no
4779 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4780 gcc_cv_ld_eh_frame_ciev3=no
4786 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4787 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4788 gcc_cv_ld_eh_frame_ciev3=yes
4794 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4795 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4796 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4797 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4799 AC_MSG_CHECKING(linker position independent executable support)
4801 if test $in_tree_ld = yes ; then
4803 # Full PIE support on Solaris was only introduced in gld 2.26.
4804 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
4805 *) gcc_gld_pie_min_version=15 ;;
4807 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge "$gcc_gld_pie_min_version" -o "$gcc_cv_gld_major_version" -gt 2 \
4808 && test $in_tree_ld_is_elf = yes; then
4811 elif test x$gcc_cv_ld != x; then
4812 # Check if linker supports -pie option
4813 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4817 if echo "$ld_ver" | grep GNU > /dev/null \
4818 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
4825 *-*-solaris2.1[[1-9]]*)
4826 # Solaris 11.x and Solaris 12 added PIE support.
4827 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
4834 if test x"$gcc_cv_ld_pie" = xyes; then
4835 AC_DEFINE(HAVE_LD_PIE, 1,
4836 [Define if your linker supports PIE option.])
4838 AC_MSG_RESULT($gcc_cv_ld_pie)
4840 AC_MSG_CHECKING(linker PIE support with copy reloc)
4841 gcc_cv_ld_pie_copyreloc=no
4842 if test $gcc_cv_ld_pie = yes ; then
4843 if test $in_tree_ld = yes ; then
4844 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
4845 gcc_cv_ld_pie_copyreloc=yes
4847 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4848 # Check if linker supports -pie option with copy reloc
4850 i?86-*-linux* | x86_64-*-linux*)
4851 cat > conftest1.s <<EOF
4854 .type a_glob, @object
4859 cat > conftest2.s <<EOF
4862 .type main, @function
4864 movl %eax, a_glob(%rip)
4867 .section .data.rel,"aw",@progbits
4872 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4873 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
4874 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4875 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
4876 gcc_cv_ld_pie_copyreloc=yes
4878 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
4883 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
4884 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
4885 [Define 0/1 if your linker supports -pie option with copy reloc.])
4886 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
4888 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4889 gcc_cv_ld_eh_gc_sections=no
4890 if test $in_tree_ld = yes ; then
4891 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4892 && test $in_tree_ld_is_elf = yes; then
4893 gcc_cv_ld_eh_gc_sections=yes
4895 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4896 cat > conftest.s <<EOF
4899 .type _start, @function
4902 .size _start, .-_start
4903 .section .text.foo,"ax",@progbits
4904 .type foo, @function
4908 .section .gcc_except_table.foo,"a",@progbits
4911 .section .eh_frame,"a",@progbits
4914 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4915 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4916 | grep "gc-sections option ignored" > /dev/null; then
4917 gcc_cv_ld_eh_gc_sections=no
4918 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4919 | grep gcc_except_table > /dev/null; then
4920 gcc_cv_ld_eh_gc_sections=yes
4921 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4922 if test x$gcc_cv_as_comdat_group != xyes; then
4923 gcc_cv_ld_eh_gc_sections=no
4924 cat > conftest.s <<EOF
4927 .type _start, @function
4930 .size _start, .-_start
4931 .section .gnu.linkonce.t.foo,"ax",@progbits
4932 .type foo, @function
4936 .section .gcc_except_table.foo,"a",@progbits
4939 .section .eh_frame,"a",@progbits
4942 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4943 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4944 | grep "gc-sections option ignored" > /dev/null; then
4945 gcc_cv_ld_eh_gc_sections=no
4946 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4947 | grep gcc_except_table > /dev/null; then
4948 gcc_cv_ld_eh_gc_sections=yes
4954 rm -f conftest.s conftest.o conftest
4958 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4959 gcc_cv_ld_eh_gc_sections=no
4962 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4963 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4964 [Define if your linker supports garbage collection of
4965 sections in presence of EH frames.])
4967 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4969 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4970 gcc_cv_ld_eh_gc_sections_bug=no
4971 if test $in_tree_ld = yes ; then
4972 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4973 && test $in_tree_ld_is_elf = yes; then
4974 gcc_cv_ld_eh_gc_sections_bug=yes
4976 elif test x$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
4977 gcc_cv_ld_eh_gc_sections_bug=yes
4978 cat > conftest.s <<EOF
4981 .type _start, @function
4984 .size _start, .-_start
4985 .section .text.startup.foo,"ax",@progbits
4986 .type foo, @function
4990 .section .gcc_except_table.foo,"a",@progbits
4993 .section .eh_frame,"a",@progbits
4996 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4997 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4998 | grep "gc-sections option ignored" > /dev/null; then
5000 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5001 | grep gcc_except_table > /dev/null; then
5002 gcc_cv_ld_eh_gc_sections_bug=no
5005 rm -f conftest.s conftest.o conftest
5007 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5008 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5009 [Define if your linker has buggy garbage collection of
5010 sections support when .text.startup.foo like sections are used.])
5012 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5014 AC_MSG_CHECKING(linker for compressed debug sections)
5015 # gold/gld support compressed debug sections since binutils 2.19/2.21
5016 if test $in_tree_ld = yes ; then
5017 gcc_cv_ld_compress_debug=0
5018 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5019 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5020 gcc_cv_ld_compress_debug=2
5021 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5022 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5023 && test $in_tree_ld_is_elf = yes; then
5024 gcc_cv_ld_compress_debug=1
5026 elif echo "$ld_ver" | grep GNU > /dev/null; then
5027 gcc_cv_ld_compress_debug=1
5028 if test 0"$ld_date" -lt 20050308; then
5029 if test -n "$ld_date"; then
5030 # If there was date string, but was earlier than 2005-03-08, fail
5031 gcc_cv_ld_compress_debug=0
5032 elif test "$ld_vers_major" -lt 2; then
5033 gcc_cv_ld_compress_debug=0
5034 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5035 gcc_cv_ld_compress_debug=0
5038 if test $ld_is_gold = yes; then
5039 gcc_cv_ld_compress_debug=2
5040 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5046 # Introduced in Solaris 11.2.
5047 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5048 gcc_cv_ld_compress_debug=3
5049 gcc_cv_ld_compress_debug_option="-z compress-sections"
5051 gcc_cv_ld_compress_debug=0
5055 # Assume linkers other than GNU ld don't support compessed debug
5057 gcc_cv_ld_compress_debug=0
5062 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5063 [Define to the level of your linker's compressed debug section support.])
5064 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5065 [Define to the linker option to enable compressed debug sections.])
5066 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5072 AC_CACHE_CHECK(linker --as-needed support,
5073 gcc_cv_ld_as_needed,
5074 [gcc_cv_ld_as_needed=no
5075 gcc_cv_ld_as_needed_option='--as-needed'
5076 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5077 if test $in_tree_ld = yes ; then
5078 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5079 && test $in_tree_ld_is_elf = yes; then
5080 gcc_cv_ld_as_needed=yes
5082 elif test x$gcc_cv_ld != x; then
5083 # Check if linker supports --as-needed and --no-as-needed options
5084 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
5085 gcc_cv_ld_as_needed=yes
5088 # Solaris 2 ld always supports -z ignore/-z record.
5090 gcc_cv_ld_as_needed=yes
5091 gcc_cv_ld_as_needed_option="-z ignore"
5092 gcc_cv_ld_no_as_needed_option="-z record"
5097 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5098 # dl_iterate_phdr, i.e. since Solaris 11.
5100 *-*-solaris2.1[[1-9]]*)
5102 i?86-*-* | x86_64-*-*)
5103 if echo "$ld_ver" | grep GNU > /dev/null; then
5104 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5105 gcc_cv_ld_as_needed=no
5111 gcc_cv_ld_as_needed=no
5115 if test x"$gcc_cv_ld_as_needed" = xyes; then
5116 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5117 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5118 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5119 [Define to the linker option to ignore unused dependencies.])
5120 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5121 [Define to the linker option to keep unused dependencies.])
5124 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5125 saved_LDFLAGS="$LDFLAGS"
5126 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5127 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5128 AC_LINK_IFELSE([int main(void) {return 0;}],
5129 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5131 LDFLAGS="$saved_LDFLAGS"
5132 if test "x$gcc_cv_ld_clearcap" = xyes; then
5133 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5134 [Define if the linker supports clearing hardware capabilities via mapfile.])
5135 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5137 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5139 case "$target:$tm_file" in
5140 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5143 emul_name="-melf64lppc"
5146 emul_name="-melf64ppc"
5149 emul_name="-melf64ppc_fbsd"
5152 AC_CACHE_CHECK(linker support for omitting dot symbols,
5153 gcc_cv_ld_no_dot_syms,
5154 [gcc_cv_ld_no_dot_syms=no
5155 if test x"$ld_is_gold" = xyes; then
5156 gcc_cv_ld_no_dot_syms=yes
5157 elif test $in_tree_ld = yes ; then
5158 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5159 gcc_cv_ld_no_dot_syms=yes
5161 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5162 cat > conftest1.s <<EOF
5166 cat > conftest2.s <<EOF
5167 .section ".opd","aw"
5172 .quad .LEfoo,.TOC.@tocbase,0
5178 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5179 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5180 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5181 gcc_cv_ld_no_dot_syms=yes
5183 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5186 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5187 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5188 [Define if your PowerPC64 linker only needs function descriptor syms.])
5191 AC_CACHE_CHECK(linker large toc support,
5192 gcc_cv_ld_large_toc,
5193 [gcc_cv_ld_large_toc=no
5194 if test x"$ld_is_gold" = xyes; then
5195 gcc_cv_ld_large_toc=yes
5196 elif test $in_tree_ld = yes ; then
5197 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5198 gcc_cv_ld_large_toc=yes
5200 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5201 cat > conftest.s <<EOF
5202 .section ".tbss","awT",@nobits
5208 addis 9,13,ie0@got@tprel@ha
5209 ld 9,ie0@got@tprel@l(9)
5211 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5212 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5213 gcc_cv_ld_large_toc=yes
5215 rm -f conftest conftest.o conftest.s
5218 if test x"$gcc_cv_ld_large_toc" = xyes; then
5219 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5220 [Define if your PowerPC64 linker supports a large TOC.])
5223 AC_CACHE_CHECK(linker toc pointer alignment,
5224 gcc_cv_ld_toc_align,
5225 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5226 cat > conftest.s <<EOF
5231 .section .data.rel.ro,"aw",@progbits
5236 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5237 && $gcc_cv_ld $emul_name -o conftest conftest.o > /dev/null 2>&1; then
5238 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5240 rm -f conftest conftest.o conftest.s
5243 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5244 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5245 [Define to .TOC. alignment forced by your linker.])
5252 AC_CACHE_CHECK(linker large toc support,
5253 gcc_cv_ld_large_toc,
5254 [gcc_cv_ld_large_toc=no
5255 if test x$gcc_cv_as != x ; then
5256 cat > conftest.s <<EOF
5266 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5267 gcc_cv_ld_large_toc=yes
5269 rm -f conftest conftest.o conftest.s
5272 if test x"$gcc_cv_ld_large_toc" = xyes; then
5273 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5274 [Define if your PowerPC64 linker supports a large TOC.])
5279 AC_CACHE_CHECK(linker --build-id support,
5281 [gcc_cv_ld_buildid=no
5282 if test $in_tree_ld = yes ; then
5283 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5284 "$gcc_cv_gld_minor_version" -ge 18 -o \
5285 "$gcc_cv_gld_major_version" -gt 2 \
5286 && test $in_tree_ld_is_elf = yes; then
5287 gcc_cv_ld_buildid=yes
5289 elif test x$gcc_cv_ld != x; then
5290 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
5291 gcc_cv_ld_buildid=yes
5294 if test x"$gcc_cv_ld_buildid" = xyes; then
5295 AC_DEFINE(HAVE_LD_BUILDID, 1,
5296 [Define if your linker supports --build-id.])
5299 AC_ARG_ENABLE(linker-build-id,
5300 [AS_HELP_STRING([--enable-linker-build-id],
5301 [compiler will always pass --build-id to linker])],
5303 enable_linker_build_id=no)
5305 if test x"$enable_linker_build_id" = xyes; then
5306 if test x"$gcc_cv_ld_buildid" = xyes; then
5307 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5308 [Define if gcc should always pass --build-id to linker.])
5310 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5314 # In binutils 2.21, GNU ld gained support for new emulations fully
5315 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5316 AC_CACHE_CHECK(linker *_sol2 emulation support,
5317 gcc_cv_ld_sol2_emulation,
5318 [gcc_cv_ld_sol2_emulation=no
5319 if test $in_tree_ld = yes ; then
5320 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5321 "$gcc_cv_gld_minor_version" -ge 21 -o \
5322 "$gcc_cv_gld_major_version" -gt 2 \
5323 && test $in_tree_ld_is_elf = yes; then
5324 gcc_cv_ld_sol2_emulation=yes
5326 elif test x$gcc_cv_ld != x; then
5327 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5328 grep _sol2 > /dev/null; then
5329 gcc_cv_ld_sol2_emulation=yes
5332 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5333 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5334 [Define if your linker supports the *_sol2 emulations.])
5337 AC_CACHE_CHECK(linker --sysroot support,
5339 [gcc_cv_ld_sysroot=no
5340 if test $in_tree_ld = yes ; then
5341 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5342 gcc_cv_ld_sysroot=yes
5344 elif test x$gcc_cv_ld != x; then
5345 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
5346 gcc_cv_ld_sysroot=yes
5349 if test x"$gcc_cv_ld_sysroot" = xyes; then
5350 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5351 [Define if your linker supports --sysroot.])
5356 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5357 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5358 gcc_cv_solaris_crts,
5359 [gcc_cv_solaris_crts=no
5360 if test x$host != x$target; then
5361 if test "x$with_sysroot" = xyes; then
5362 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5364 target_sysroot="${with_sysroot}"
5367 target_libdir="$target_sysroot/usr/lib"
5368 # At the time they were added, gcrt1.o became a symlink for backwards
5369 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5371 i?86-*-solaris2* | x86_64-*-solaris2*)
5372 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5375 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5380 if test x$gcc_cv_solaris_crts = xyes; then
5381 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5382 [Define if the system-provided CRTs are present on Solaris.])
5385 # Test for stack protector support in target C library.
5386 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5387 gcc_cv_libc_provides_ssp,
5388 [gcc_cv_libc_provides_ssp=no
5391 # All versions of musl provide stack protector
5392 gcc_cv_libc_provides_ssp=yes;;
5393 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
5394 # glibc 2.4 and later provides __stack_chk_fail and
5395 # either __stack_chk_guard, or TLS access to stack guard canary.
5396 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5397 [if test -f $target_header_dir/features.h \
5398 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5399 $target_header_dir/features.h > /dev/null; then
5400 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5401 $target_header_dir/features.h > /dev/null && \
5402 test -f $target_header_dir/bits/uClibc_config.h && \
5403 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5404 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5405 gcc_cv_libc_provides_ssp=yes
5407 # all versions of Bionic support stack protector
5408 elif test -f $target_header_dir/sys/cdefs.h \
5409 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5410 $target_header_dir/sys/cdefs.h > /dev/null; then
5411 gcc_cv_libc_provides_ssp=yes
5415 # Avoid complicated tests (see
5416 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5417 # simply assert that glibc does provide this, which is true for all
5418 # realistically usable GNU/Hurd configurations.
5419 # All supported versions of musl provide it as well
5420 gcc_cv_libc_provides_ssp=yes;;
5421 *-*-darwin* | *-*-freebsd*)
5422 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5423 [echo "no __stack_chk_fail on this target"])
5425 *) gcc_cv_libc_provides_ssp=no ;;
5428 if test x$gcc_cv_libc_provides_ssp = xyes; then
5429 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5430 [Define if your target C library provides stack protector support])
5433 # Check whether --enable-default-ssp was given.
5434 AC_ARG_ENABLE(default-ssp,
5435 [AS_HELP_STRING([--enable-default-ssp],
5436 [enable Stack Smashing Protection as default])],[
5437 if test x$gcc_cv_libc_provides_ssp = xyes; then
5439 ia64*-*-*) enable_default_ssp=no ;;
5440 *) enable_default_ssp=$enableval ;;
5443 enable_default_ssp=no
5445 enable_default_ssp=no)
5446 if test x$enable_default_ssp == xyes ; then
5447 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5448 [Define if your target supports default stack protector and it is enabled.])
5450 AC_SUBST([enable_default_ssp])
5452 # Test for <sys/sdt.h> on the target.
5453 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5454 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5456 if test -f $target_header_dir/sys/sdt.h; then
5458 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5459 [Define if your target C library provides sys/sdt.h])
5461 AC_MSG_RESULT($have_sys_sdt_h)
5463 # Check if TFmode long double should be used by default or not.
5464 # Some glibc targets used DFmode long double, but with glibc 2.4
5465 # and later they can use TFmode.
5467 powerpc*-*-linux* | \
5471 AC_ARG_WITH(long-double-128,
5472 [AS_HELP_STRING([--with-long-double-128],
5473 [use 128-bit long double by default])],
5474 gcc_cv_target_ldbl128="$with_long_double_128",
5475 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5476 [gcc_cv_target_ldbl128=no
5477 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5478 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5479 && gcc_cv_target_ldbl128=yes
5483 if test x$gcc_cv_target_ldbl128 = xyes; then
5484 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5485 [Define if TFmode long double should be the default])
5488 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5489 gcc_cv_target_dl_iterate_phdr=unknown
5491 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5492 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5493 # libdl there, both complicating its use and breaking compatibility
5494 # between Solaris 10 updates.
5495 *-*-solaris2.1[[1-9]]*)
5496 # <link.h> needs both a dl_iterate_phdr declaration and support for
5497 # compilation with largefile support.
5498 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5499 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5500 gcc_cv_target_dl_iterate_phdr=yes
5502 gcc_cv_target_dl_iterate_phdr=no
5505 *-*-dragonfly* | *-*-freebsd*)
5506 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5507 gcc_cv_target_dl_iterate_phdr=yes
5509 gcc_cv_target_dl_iterate_phdr=no
5513 gcc_cv_target_dl_iterate_phdr=yes
5516 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5517 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5518 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5519 [Define if your target C library provides the `dl_iterate_phdr' function.])
5521 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5523 # We no longer support different GC mechanisms. Emit an error if
5524 # the user configures with --with-gc.
5526 [AS_HELP_STRING([--with-gc={page,zone}],
5527 [this option is not supported anymore. It used to choose
5528 the garbage collection mechanism to use with the compiler])],
5529 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5532 # Libraries to use on the host. This will normally be set by the top
5533 # level Makefile. Here we simply capture the value for our Makefile.
5534 if test -z "${HOST_LIBS+set}"; then
5539 # Use the system's zlib library.
5542 dnl Very limited version of automake's enable-maintainer-mode
5544 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5545 dnl maintainer-mode is disabled by default
5546 AC_ARG_ENABLE(maintainer-mode,
5547 [AS_HELP_STRING([--enable-maintainer-mode],
5548 [enable make rules and dependencies not useful
5549 (and sometimes confusing) to the casual installer])],
5550 maintainer_mode=$enableval,
5553 AC_MSG_RESULT($maintainer_mode)
5555 if test "$maintainer_mode" = "yes"; then
5562 dnl Whether to prevent multiple front-ends from linking at the same time
5564 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5565 AC_ARG_ENABLE(link-mutex,
5566 [AS_HELP_STRING([--enable-link-mutex],
5567 [avoid linking multiple front-ends at once to avoid thrashing
5568 on the build machine])],
5569 do_link_mutex=$enableval,
5571 AC_MSG_RESULT($do_link_mutex)
5573 if test "$do_link_mutex" = "yes"; then
5578 AC_SUBST(DO_LINK_MUTEX)
5584 # Make empty files to contain the specs and options for each language.
5585 # Then add #include lines to for a compiler that has specs and/or options.
5591 # These (without "all_") are set in each config-lang.in.
5592 # `language' must be a single word so is spelled singularly.
5595 all_outputs='Makefile'
5596 # List of language makefile fragments.
5598 # Additional files for gengtype
5599 all_gtfiles="$target_gtfiles"
5601 # These are the languages that are set in --enable-languages,
5602 # and are available in the GCC tree.
5603 all_selected_languages=
5605 # Add the language fragments.
5606 # Languages are added via two mechanisms. Some information must be
5607 # recorded in makefile variables, these are defined in config-lang.in.
5608 # We accumulate them and plug them into the main Makefile.
5609 # The other mechanism is a set of hooks for each of the main targets
5610 # like `clean', `install', etc.
5612 language_hooks="Make-hooks"
5614 for lang in ${srcdir}/*/config-lang.in
5617 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5619 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5620 if test "x$lang_alias" = x
5622 echo "$lang doesn't set \$language." 1>&2
5625 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5626 subdirs="$subdirs $subdir"
5628 # $gcc_subdir is where the gcc integration files are to be found
5629 # for a language, both for internal compiler purposes (compiler
5630 # sources implementing front-end to GCC tree converters), and for
5631 # build infrastructure purposes (Make-lang.in, etc.)
5633 # This will be <subdir> (relative to $srcdir) if a line like
5634 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5635 # is found in <langdir>/config-lang.in, and will remain <langdir>
5638 # Except for the language alias (fetched above), the regular
5639 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5640 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5641 # only this and the language alias.
5643 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5644 if [ "$gcc_subdir" = "" ]; then
5645 gcc_subdir="$subdir"
5648 case ",$enable_languages," in
5650 all_selected_languages="$all_selected_languages $lang_alias"
5651 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5652 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5664 . ${srcdir}/$gcc_subdir/config-lang.in
5665 if test "x$language" = x
5667 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5672 case ",$enable_languages," in
5675 for i in $subdir_requires; do
5676 test -f "${srcdir}/$i/config-lang.in" && continue
5684 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5685 if test -f $srcdir/$gcc_subdir/lang.opt; then
5686 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5687 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5689 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5690 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5692 all_languages="$all_languages $language"
5693 all_compilers="$all_compilers $compilers"
5694 all_outputs="$all_outputs $outputs"
5695 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5696 case ",$enable_languages," in
5698 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5700 AC_SUBST(enable_lto)
5707 for language in $all_selected_languages
5709 check_languages="$check_languages check-$language"
5712 # We link each language in with a set of hooks, reached indirectly via
5713 # lang.${target}. Only do so for selected languages.
5717 target_list="all.cross start.encap rest.encap tags \
5718 install-common install-man install-info install-pdf install-html dvi \
5719 pdf html uninstall info man srcextra srcman srcinfo \
5720 mostlyclean clean distclean maintainer-clean install-plugin"
5722 for t in $target_list
5725 for lang in $all_selected_languages
5729 echo "lang.$t: $x" >> Make-hooks
5733 # Option include files
5736 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5737 option_includes="option-includes.mk"
5738 AC_SUBST_FILE(option_includes)
5746 echo "dir ." > .gdbinit
5747 echo "dir ${srcdir}" >> .gdbinit
5748 if test x$gdb_needs_out_file_path = xyes
5750 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5752 if test "x$subdirs" != x; then
5755 echo "dir ${srcdir}/$s" >> .gdbinit
5758 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5759 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
5761 # Put a breakpoint on __asan_report_error to help with debugging buffer
5764 *-fsanitize=address*)
5765 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
5769 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5770 AC_SUBST(gcc_tooldir)
5773 # Find a directory in which to install a shared libgcc.
5775 AC_ARG_ENABLE(version-specific-runtime-libs,
5776 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5777 [specify that runtime libraries should be
5778 installed in a compiler-specific directory])])
5780 # Substitute configuration variables
5783 AC_SUBST(all_compilers)
5784 AC_SUBST(all_gtfiles)
5785 AC_SUBST(all_lang_makefrags)
5786 AC_SUBST(all_languages)
5787 AC_SUBST(all_selected_languages)
5788 AC_SUBST(build_exeext)
5789 AC_SUBST(build_install_headers_dir)
5790 AC_SUBST(build_xm_file_list)
5791 AC_SUBST(build_xm_include_list)
5792 AC_SUBST(build_xm_defines)
5793 AC_SUBST(build_file_translate)
5794 AC_SUBST(check_languages)
5795 AC_SUBST(cpp_install_dir)
5796 AC_SUBST(xmake_file)
5797 AC_SUBST(tmake_file)
5798 AC_SUBST(TM_ENDIAN_CONFIG)
5799 AC_SUBST(TM_MULTILIB_CONFIG)
5800 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5801 AC_SUBST(extra_gcc_objs)
5802 AC_SUBST(user_headers_inc_next_pre)
5803 AC_SUBST(user_headers_inc_next_post)
5804 AC_SUBST(extra_headers_list)
5805 AC_SUBST(extra_objs)
5806 AC_SUBST(extra_programs)
5807 AC_SUBST(float_h_file)
5808 AC_SUBST(gcc_config_arguments)
5809 AC_SUBST(gcc_gxx_include_dir)
5810 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5811 AC_SUBST(host_exeext)
5812 AC_SUBST(host_xm_file_list)
5813 AC_SUBST(host_xm_include_list)
5814 AC_SUBST(host_xm_defines)
5815 AC_SUBST(out_host_hook_obj)
5817 AC_SUBST(lang_opt_files)
5818 AC_SUBST(lang_specs_files)
5819 AC_SUBST(lang_tree_files)
5820 AC_SUBST(local_prefix)
5822 AC_SUBST(objc_boehm_gc)
5824 AC_SUBST(out_object_file)
5825 AC_SUBST(common_out_file)
5826 AC_SUBST(common_out_object_file)
5827 AC_SUBST(tm_file_list)
5828 AC_SUBST(tm_include_list)
5829 AC_SUBST(tm_defines)
5830 AC_SUBST(tm_p_file_list)
5831 AC_SUBST(tm_p_include_list)
5832 AC_SUBST(xm_file_list)
5833 AC_SUBST(xm_include_list)
5834 AC_SUBST(xm_defines)
5835 AC_SUBST(use_gcc_stdint)
5836 AC_SUBST(c_target_objs)
5837 AC_SUBST(cxx_target_objs)
5838 AC_SUBST(fortran_target_objs)
5839 AC_SUBST(target_cpu_default)
5841 AC_SUBST_FILE(language_hooks)
5844 if test x${build} = x${host} ; then
5845 if test x${host} = x${target} ; then
5846 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5848 echo "Links are now set up to build a cross-compiler" 1>&2
5849 echo " from ${host} to ${target}." 1>&2
5852 if test x${host} = x${target} ; then
5853 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5854 echo " for ${target}." 1>&2
5856 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5857 echo " from ${host} to ${target}." 1>&2
5861 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5862 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5864 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5865 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5866 if test "x${ISLLIBS}" != "x" ; then
5867 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
5870 # Check whether isl_schedule_constraints_compute_schedule is available;
5871 # it's new in ISL-0.13.
5872 # Check whether isl_options_set_schedule_serialize_sccs is available;
5873 # it's new in ISL-0.15.
5874 if test "x${ISLLIBS}" != "x" ; then
5875 saved_CXXFLAGS="$CXXFLAGS"
5876 CXXFLAGS="$CXXFLAGS $ISLINC"
5878 LIBS="$LIBS $ISLLIBS $GMPLIBS"
5880 AC_MSG_CHECKING([Checking for isl_schedule_constraints_compute_schedule])
5881 AC_TRY_LINK([#include <isl/schedule.h>],
5882 [isl_schedule_constraints_compute_schedule (NULL);],
5883 [ac_has_isl_schedule_constraints_compute_schedule=yes],
5884 [ac_has_isl_schedule_constraints_compute_schedule=no])
5885 AC_MSG_RESULT($ac_has_isl_schedule_constraints_compute_schedule)
5887 AC_MSG_CHECKING([Checking for isl_options_set_schedule_serialize_sccs])
5888 AC_TRY_LINK([#include <isl/schedule.h>],
5889 [isl_options_set_schedule_serialize_sccs (NULL, 0);],
5890 [ac_has_isl_options_set_schedule_serialize_sccs=yes],
5891 [ac_has_isl_options_set_schedule_serialize_sccs=no])
5892 AC_MSG_RESULT($ac_has_isl_options_set_schedule_serialize_sccs)
5894 AC_MSG_CHECKING([Checking for isl_ctx_get_max_operations])
5895 AC_TRY_LINK([#include <isl/ctx.h>],
5896 [isl_ctx_get_max_operations (isl_ctx_alloc ());],
5897 [ac_has_isl_ctx_get_max_operations=yes],
5898 [ac_has_isl_ctx_get_max_operations=no])
5899 AC_MSG_RESULT($ac_has_isl_ctx_get_max_operations)
5902 CXXFLAGS="$saved_CXXFLAGS"
5904 if test x"$ac_has_isl_schedule_constraints_compute_schedule" = x"yes"; then
5905 AC_DEFINE(HAVE_ISL_SCHED_CONSTRAINTS_COMPUTE_SCHEDULE, 1,
5906 [Define if isl_schedule_constraints_compute_schedule exists.])
5909 if test x"$ac_has_isl_options_set_schedule_serialize_sccs" = x"yes"; then
5910 AC_DEFINE(HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS, 1,
5911 [Define if isl_options_set_schedule_serialize_sccs exists.])
5913 if test x"$ac_has_isl_ctx_get_max_operations" = x"yes"; then
5914 AC_DEFINE(HAVE_ISL_CTX_MAX_OPERATIONS, 1,
5915 [Define if isl_ctx_get_max_operations exists.])
5920 AC_SUBST(pluginlibs)
5921 AC_SUBST(enable_plugin)
5922 if test x"$enable_plugin" = x"yes"; then
5923 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5927 # Enable --enable-host-shared
5928 AC_ARG_ENABLE(host-shared,
5929 [AS_HELP_STRING([--enable-host-shared],
5930 [build host code as shared libraries])],
5931 [PICFLAG=-fPIC], [PICFLAG=])
5932 AC_SUBST(enable_host_shared)
5936 AC_ARG_ENABLE(libquadmath-support,
5937 [AS_HELP_STRING([--disable-libquadmath-support],
5938 [disable libquadmath support for Fortran])],
5939 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5940 ENABLE_LIBQUADMATH_SUPPORT=yes)
5941 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5942 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5943 [Define to 1 to enable libquadmath support])
5947 # Specify what hash style to use by default.
5948 AC_ARG_WITH([linker-hash-style],
5949 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5950 [specify the linker hash style])],
5951 [case x"$withval" in
5953 LINKER_HASH_STYLE=sysv
5956 LINKER_HASH_STYLE=gnu
5959 LINKER_HASH_STYLE=both
5962 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5965 [LINKER_HASH_STYLE=''])
5966 if test x"${LINKER_HASH_STYLE}" != x; then
5967 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5968 [The linker hash style])
5971 # Specify what should be the default of -fdiagnostics-color option.
5972 AC_ARG_WITH([diagnostics-color],
5973 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
5974 [specify the default of -fdiagnostics-color option
5975 auto-if-env stands for -fdiagnostics-color=auto if
5976 GCC_COLOR environment variable is present and
5977 -fdiagnostics-color=never otherwise])],
5978 [case x"$withval" in
5980 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
5983 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
5986 DIAGNOSTICS_COLOR_DEFAULT=-1
5989 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
5992 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
5995 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
5996 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
5997 [The default for -fdiagnostics-color option])
5999 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6000 # of jit/jit-playback.c.
6001 cat > gcc-driver-name.h <<EOF
6002 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
6005 # Check whether --enable-default-pie was given.
6006 AC_ARG_ENABLE(default-pie,
6007 [AS_HELP_STRING([--enable-default-pie],
6008 [enable Position Independent Executable as default])],
6009 enable_default_pie=$enableval,
6010 enable_default_pie=no)
6011 if test x$enable_default_pie == xyes ; then
6012 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6013 [Define if your target supports default PIE and it is enabled.])
6015 AC_SUBST([enable_default_pie])
6017 # Check if -fno-PIE works.
6018 AC_CACHE_CHECK([for -fno-PIE option],
6020 [saved_CXXFLAGS="$CXXFLAGS"
6021 CXXFLAGS="$CXXFLAGS -fno-PIE"
6022 AC_COMPILE_IFELSE([int main(void) {return 0;}],
6023 [gcc_cv_c_no_fpie=yes],
6024 [gcc_cv_c_no_fpie=no])
6025 CXXFLAGS="$saved_CXXFLAGS"])
6026 if test "$gcc_cv_c_no_fpie" = "yes"; then
6027 NO_PIE_CFLAGS="-fno-PIE"
6029 AC_SUBST([NO_PIE_CFLAGS])
6031 # Check if -no-pie works.
6032 AC_CACHE_CHECK([for -no-pie option],
6034 [saved_LDFLAGS="$LDFLAGS"
6035 LDFLAGS="$LDFLAGS -no-pie"
6036 AC_LINK_IFELSE([int main(void) {return 0;}],
6037 [gcc_cv_no_pie=yes],
6039 LDFLAGS="$saved_LDFLAGS"])
6040 if test "$gcc_cv_no_pie" = "yes"; then
6041 NO_PIE_FLAG="-no-pie"
6043 AC_SUBST([NO_PIE_FLAG])
6045 # Check linker supports '-z bndplt'
6046 ld_bndplt_support=no
6047 AC_MSG_CHECKING(linker -z bndplt option)
6048 if test x"$ld_is_gold" = xno; then
6049 if test $in_tree_ld = yes ; then
6050 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6051 ld_bndplt_support=yes
6053 elif test x$gcc_cv_ld != x; then
6054 # Check if linker supports -a bndplt option
6055 if $gcc_cv_ld --help 2>/dev/null | grep -- '-z bndplt' > /dev/null; then
6056 ld_bndplt_support=yes
6060 if test x"$ld_bndplt_support" = xyes; then
6061 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6062 [Define if your linker supports -z bndplt])
6064 AC_MSG_RESULT($ld_bndplt_support)
6066 # Configure the subdirectories
6067 # AC_CONFIG_SUBDIRS($subdirs)
6069 # Create the Makefile
6070 # and configure language subdirectories
6071 AC_CONFIG_FILES($all_outputs)
6073 AC_CONFIG_COMMANDS([default],
6075 case ${CONFIG_HEADERS} in
6076 *auto-host.h:config.in*)
6079 # Make sure all the subdirs exist.
6080 for d in $subdirs doc build common c-family
6082 test -d $d || mkdir $d
6085 [subdirs='$subdirs'])