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])])
422 # ---------------------
423 # Warnings and checking
424 # ---------------------
426 # Check $CC warning features (if it's GCC).
427 # We want to use -pedantic, but we don't want warnings about
431 # * C++11 narrowing conversions in { }
432 # So, we only use -pedantic if we can disable those warnings.
434 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
435 AC_ARG_ENABLE(build-format-warnings,
436 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
437 [],[enable_build_format_warnings=yes])
438 AS_IF([test $enable_build_format_warnings = no],
439 [wf_opt=-Wno-format],[wf_opt=])
440 ACX_PROG_CXX_WARNING_OPTS(
441 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual $wf_opt])), [loose_warn])
442 ACX_PROG_CC_WARNING_OPTS(
443 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
445 ACX_PROG_CXX_WARNING_OPTS(
446 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
447 ACX_PROG_CXX_WARNING_OPTS(
448 m4_quote(m4_do([-Woverloaded-virtual])), [strict_warn])
449 ACX_PROG_CC_WARNING_OPTS(
450 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
451 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
452 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
453 [-Wno-overlength-strings])), [strict_warn])
454 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
456 # The above macros do nothing if the compiler is not GCC. However, the
457 # Makefile has more goo to add other flags, so these variables are used
458 # to enable warnings only for GCC.
461 if test "x$GCC" = "xyes"; then
462 warn_cflags='$(GCC_WARN_CFLAGS)'
463 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
465 AC_SUBST(warn_cflags)
466 AC_SUBST(warn_cxxflags)
468 # Disable exceptions and RTTI if building with g++
469 ACX_PROG_CC_WARNING_OPTS(
470 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
473 # Enable expensive internal checks
475 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
479 AC_ARG_ENABLE(checking,
480 [AS_HELP_STRING([[--enable-checking[=LIST]]],
481 [enable expensive run-time checks. With LIST,
482 enable only specific categories of checks.
483 Categories are: yes,no,all,none,release.
484 Flags are: assert,df,fold,gc,gcac,gimple,misc,
485 rtlflag,rtl,runtime,tree,valgrind,types])],
486 [ac_checking_flags="${enableval}"],[
487 # Determine the default checks.
488 if test x$is_release = x ; then
489 ac_checking_flags=yes
491 ac_checking_flags=release
493 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
494 for check in release $ac_checking_flags
497 # these set all the flags to specific states
498 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
499 ac_fold_checking= ; ac_gc_checking=1 ;
500 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
501 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
502 ac_tree_checking=1 ; ac_valgrind_checking= ;
503 ac_types_checking=1 ;;
504 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
505 ac_fold_checking= ; ac_gc_checking= ;
506 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
507 ac_rtlflag_checking= ; ac_runtime_checking= ;
508 ac_tree_checking= ; ac_valgrind_checking= ;
509 ac_types_checking= ;;
510 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
511 ac_fold_checking=1 ; ac_gc_checking=1 ;
512 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
513 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
514 ac_tree_checking=1 ; ac_valgrind_checking= ;
515 ac_types_checking=1 ;;
516 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
517 ac_fold_checking= ; ac_gc_checking= ;
518 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
519 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
520 ac_tree_checking= ; ac_valgrind_checking= ;
521 ac_types_checking= ;;
522 # these enable particular checks
523 assert) ac_assert_checking=1 ;;
524 df) ac_df_checking=1 ;;
525 fold) ac_fold_checking=1 ;;
526 gc) ac_gc_checking=1 ;;
527 gcac) ac_gc_always_collect=1 ;;
528 gimple) ac_gimple_checking=1 ;;
529 misc) ac_checking=1 ;;
530 rtl) ac_rtl_checking=1 ;;
531 rtlflag) ac_rtlflag_checking=1 ;;
532 runtime) ac_runtime_checking=1 ;;
533 tree) ac_tree_checking=1 ;;
534 types) ac_types_checking=1 ;;
535 valgrind) ac_valgrind_checking=1 ;;
536 *) AC_MSG_ERROR(unknown check category $check) ;;
542 if test x$ac_checking != x ; then
543 AC_DEFINE(ENABLE_CHECKING, 1,
544 [Define if you want more run-time sanity checks. This one gets a grab
545 bag of miscellaneous but relatively cheap checks.])
546 nocommon_flag=-fno-common
548 AC_SUBST(nocommon_flag)
549 if test x$ac_df_checking != x ; then
550 AC_DEFINE(ENABLE_DF_CHECKING, 1,
551 [Define if you want more run-time sanity checks for dataflow.])
553 if test x$ac_assert_checking != x ; then
554 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
555 [Define if you want assertions enabled. This is a cheap check.])
557 if test x$ac_gimple_checking != x ; then
558 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
559 [Define if you want operations on GIMPLE (the basic data structure of
560 the high-level optimizers) to be checked for dynamic type safety at
561 runtime. This is moderately expensive.])
563 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
564 if test x$ac_runtime_checking != x ; then
565 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
566 [Define if you want runtime assertions enabled. This is a cheap check.])
568 if test x$ac_tree_checking != x ; then
569 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
570 [Define if you want all operations on trees (the basic data
571 structure of the front ends) to be checked for dynamic type safety
572 at runtime. This is moderately expensive. The tree browser debugging
573 routines will also be enabled by this option.
575 TREEBROWSER=tree-browser.o
578 if test x$ac_types_checking != x ; then
579 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
580 [Define if you want all gimple types to be verified after gimplifiation.
584 AC_SUBST(TREEBROWSER)
585 AC_SUBST(TREECHECKING)
586 if test x$ac_rtl_checking != x ; then
587 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
588 [Define if you want all operations on RTL (the basic data structure
589 of the optimizer and back end) to be checked for dynamic type safety
590 at runtime. This is quite expensive.])
592 if test x$ac_rtlflag_checking != x ; then
593 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
594 [Define if you want RTL flag accesses to be checked against the RTL
595 codes that are supported for each access macro. This is relatively
598 if test x$ac_gc_checking != x ; then
599 AC_DEFINE(ENABLE_GC_CHECKING, 1,
600 [Define if you want the garbage collector to do object poisoning and
601 other memory allocation checks. This is quite expensive.])
603 if test x$ac_gc_always_collect != x ; then
604 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
605 [Define if you want the garbage collector to operate in maximally
606 paranoid mode, validating the entire heap and collecting garbage at
607 every opportunity. This is extremely expensive.])
609 if test x$ac_fold_checking != x ; then
610 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
611 [Define if you want fold checked that it never destructs its argument.
612 This is quite expensive.])
614 valgrind_path_defines=
617 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
618 dnl # an if statement. This was the source of very frustrating bugs
619 dnl # in converting to autoconf 2.5x!
620 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
622 # It is certainly possible that there's valgrind but no valgrind.h.
623 # GCC relies on making annotations so we must have both.
624 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
625 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
626 [[#include <valgrind/memcheck.h>
627 #ifndef VALGRIND_DISCARD
628 #error VALGRIND_DISCARD not defined
630 [gcc_cv_header_valgrind_memcheck_h=yes],
631 [gcc_cv_header_valgrind_memcheck_h=no])
632 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
633 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
634 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
635 [[#include <memcheck.h>
636 #ifndef VALGRIND_DISCARD
637 #error VALGRIND_DISCARD not defined
639 [gcc_cv_header_memcheck_h=yes],
640 [gcc_cv_header_memcheck_h=no])
641 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
642 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
643 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
644 [Define if valgrind's valgrind/memcheck.h header is installed.])
646 if test $gcc_cv_header_memcheck_h = yes; then
647 AC_DEFINE(HAVE_MEMCHECK_H, 1,
648 [Define if valgrind's memcheck.h header is installed.])
651 if test x$ac_valgrind_checking != x ; then
652 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
653 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
654 if test "x$valgrind_path" = "x" \
655 || (test $have_valgrind_h = no \
656 && test $gcc_cv_header_memcheck_h = no \
657 && test $gcc_cv_header_valgrind_memcheck_h = no); then
658 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
660 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
661 valgrind_command="$valgrind_path -q"
662 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
663 [Define if you want to run subprograms and generated programs
664 through valgrind (a memory checker). This is extremely expensive.])
666 AC_SUBST(valgrind_path_defines)
667 AC_SUBST(valgrind_command)
669 # Enable code coverage collection
670 AC_ARG_ENABLE(coverage,
671 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
672 [enable compiler's code coverage collection.
673 Use to measure compiler performance and locate
674 unused parts of the compiler. With LEVEL, specify
675 optimization. Values are opt, noopt,
677 [case "${enableval}" in
679 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
682 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
685 # a.k.a. --disable-coverage
689 AC_MSG_ERROR(unknown coverage setting $enableval)
693 AC_SUBST(coverage_flags)
695 AC_ARG_ENABLE(gather-detailed-mem-stats,
696 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
697 [enable detailed memory allocation stats gathering])], [],
698 [enable_gather_detailed_mem_stats=no])
699 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
700 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
701 [Define to enable detailed memory allocation stats gathering.])
703 AC_ARG_ENABLE(valgrind-annotations,
704 [AS_HELP_STRING([--enable-valgrind-annotations],
705 [enable valgrind runtime interaction])], [],
706 [enable_valgrind_annotations=no])
707 if test x$enable_valgrind_annotations != xno \
708 || test x$ac_valgrind_checking != x; then
709 if (test $have_valgrind_h = no \
710 && test $gcc_cv_header_memcheck_h = no \
711 && test $gcc_cv_header_valgrind_memcheck_h = no); then
712 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
714 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
715 [Define to get calls to the valgrind runtime enabled.])
718 # -------------------------------
719 # Miscenalleous configure options
720 # -------------------------------
724 [AS_HELP_STRING([--with-stabs],
725 [arrange to use stabs instead of host debug format])],
729 # Determine whether or not multilibs are enabled.
730 AC_ARG_ENABLE(multilib,
731 [AS_HELP_STRING([--enable-multilib],
732 [enable library support for multiple ABIs])],
733 [], [enable_multilib=yes])
734 AC_SUBST(enable_multilib)
736 # Determine whether or not multiarch is enabled.
737 AC_ARG_ENABLE(multiarch,
738 [AS_HELP_STRING([--enable-multiarch],
739 [enable support for multiarch paths])],
740 [case "${enableval}" in
741 yes|no|auto) enable_multiarch=$enableval;;
742 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
743 esac], [enable_multiarch=auto])
744 if test x${enable_multiarch} = xauto; then
745 if test x${with_native_system_header_dir} != x; then
746 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
749 if test x$host != x$target && test "x$with_sysroot" = x; then
750 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
754 AC_MSG_CHECKING(for multiarch configuration)
755 AC_SUBST(enable_multiarch)
756 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
758 # needed for setting the multiarch name for soft-float/hard-float ABIs
762 # Enable __cxa_atexit for C++.
763 AC_ARG_ENABLE(__cxa_atexit,
764 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
767 # Enable C extension for decimal float if target supports it.
768 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
770 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
771 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
772 [Define to 1 to enable decimal float extension to C.])
774 # Use default_decimal_float for dependency.
775 enable_decimal_float=$default_decimal_float
777 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
778 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
779 [Define to 1 to specify that we are using the BID decimal floating
780 point format instead of DPD])
782 # Enable C extension for fixed-point arithmetic.
783 AC_ARG_ENABLE(fixed-point,
784 [AS_HELP_STRING([--enable-fixed-point],
785 [enable fixed-point arithmetic extension to C])],
790 enable_fixed_point=yes
794 enable_fixed_point=yes
797 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
798 enable_fixed_point=no
802 AC_SUBST(enable_fixed_point)
804 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
805 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
806 [Define to 1 to enable fixed-point arithmetic extension to C.])
809 # Pass with no value to take the default
810 # Pass with a value to specify a thread package
811 AC_ARG_ENABLE(threads,
812 [AS_HELP_STRING([[--enable-threads[=LIB]]],
813 [enable thread usage for target GCC,
814 using LIB thread package])],,
818 [AS_HELP_STRING([--enable-tls],
819 [enable or disable generation of tls code
820 overriding the assembler check for tls support])],
824 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
825 Valid choices are 'yes' and 'no'.]) ;;
829 AC_ARG_ENABLE(objc-gc,
830 [AS_HELP_STRING([--enable-objc-gc],
831 [enable the use of Boehm's garbage collector with
832 the GNU Objective-C runtime])],
833 if test x$enable_objc_gc = xno; then
841 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
842 dwarf2="$with_dwarf2",
845 AC_ARG_ENABLE(shared,
846 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
848 case $enable_shared in
852 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
853 for pkg in $enableval; do
854 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
861 ], [enable_shared=yes])
862 AC_SUBST(enable_shared)
865 [AS_HELP_STRING([--with-specs=SPECS],
866 [add SPECS to driver command-line processing])],
867 [CONFIGURE_SPECS=$withval],
870 AC_SUBST(CONFIGURE_SPECS)
872 ACX_PKGVERSION([GCC])
873 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
875 # Sanity check enable_languages in case someone does not run the toplevel
876 # configure # script.
877 AC_ARG_ENABLE(languages,
878 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
879 [case ,${enable_languages}, in
881 # go safe -- we cannot be much sure without the toplevel
883 # analysis of which target libs are present and usable
887 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
892 enable_languages=c,${enable_languages}
895 [enable_languages=c])
897 if test x"$enable_as_accelerator_for" != x; then
898 AC_DEFINE(ACCEL_COMPILER, 1,
899 [Define if this compiler should be built as the offload target compiler.])
900 enable_as_accelerator=yes
903 # In this case we expect offload compiler to be built as native, so we
904 # need to rename the driver to avoid clashes with host's drivers.
905 program_transform_name="s&^&${target}-&" ;;
907 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
908 program_transform_name=`echo $program_transform_name | sed $sedscript`
909 accel_dir_suffix=/accel/${target_noncanonical}
910 real_target_noncanonical=${enable_as_accelerator_for}
912 AC_SUBST(enable_as_accelerator)
913 AC_SUBST(real_target_noncanonical)
914 AC_SUBST(accel_dir_suffix)
916 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
917 tgt=`echo $tgt | sed 's/=.*//'`
918 if test x"$offload_targets" = x; then
921 offload_targets="$offload_targets:$tgt"
924 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
925 [Define to hold the list of target names suitable for offloading.])
926 if test x"$offload_targets" != x; then
927 AC_DEFINE(ENABLE_OFFLOADING, 1,
928 [Define this to enable support for offloading.])
931 AC_ARG_WITH(multilib-list,
932 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
934 with_multilib_list=default)
936 # -------------------------
937 # Checks for other programs
938 # -------------------------
942 # Find some useful tools
944 # We need awk to create options.c and options.h.
945 # Bail out if it's missing.
947 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
954 AC_SUBST(ranlib_flags)
958 # See if cmp has --ignore-initial.
959 gcc_AC_PROG_CMP_IGNORE_INITIAL
961 # See if we have the mktemp command.
962 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
964 # See if makeinfo has been installed and is modern enough
965 # that we can use it.
966 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
967 [GNU texinfo.* \([0-9][0-9.]*\)],
968 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
969 if test $gcc_cv_prog_makeinfo_modern = no; then
971 *** Makeinfo is missing or too old.
972 *** Info documentation will not be built.])
979 # Is pod2man recent enough to regenerate manpages?
980 AC_MSG_CHECKING([for recent Pod::Man])
981 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
983 GENERATED_MANPAGES=generated-manpages
988 AC_SUBST(GENERATED_MANPAGES)
990 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
993 dnl Don't use AC_PROG_LEX; we insist on flex.
994 dnl LEXLIB is not useful in gcc.
995 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
998 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1000 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1001 # check for build == host before using them.
1004 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1005 && test -d ../binutils ; then
1006 NM='${objdir}/../binutils/nm-new'
1008 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1012 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1013 && test -d ../binutils ; then
1014 AR='${objdir}/../binutils/ar'
1016 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1019 # The jit documentation looks better if built with sphinx, but can be
1020 # built with texinfo if sphinx is not available.
1021 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1022 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1024 # --------------------
1025 # Checks for C headers
1026 # --------------------
1028 # Need to reject headers which give warnings, so that the -Werror bootstrap
1029 # works later. *sigh* This needs to come before all header checks.
1036 AC_HEADER_TIOCGWINSZ
1037 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1038 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1039 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1040 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1042 # Check for thread headers.
1043 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1044 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1046 # These tests can't be done till we know if we have limits.h.
1050 # ----------------------
1051 # Checks for C++ headers
1052 # ----------------------
1054 dnl Autoconf will give an error in the configure script if there is no
1055 dnl C++ preprocessor. Hack to prevent that.
1056 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1058 m4_popdef([AC_MSG_ERROR])[]dnl
1060 AC_CHECK_HEADERS(unordered_map)
1061 AC_CHECK_HEADERS(tr1/unordered_map)
1062 AC_CHECK_HEADERS(ext/hash_map)
1065 # Dependency checking.
1069 AC_CONFIG_COMMANDS([gccdepdir],[
1070 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1071 for lang in $subdirs c-family common
1073 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1074 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1076 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1083 # These libraries may be used by collect2.
1084 # We may need a special search path to get them linked.
1085 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1087 for libs in '' -lld -lmld \
1088 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1089 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1092 AC_TRY_LINK_FUNC(ldopen,
1093 [gcc_cv_collect2_libs="$libs"; break])
1096 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1097 case $gcc_cv_collect2_libs in
1099 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1101 AC_SUBST(COLLECT2_LIBS)
1103 # When building Ada code on Alpha, we need exc_resume which is usually in
1104 # -lexc. So test for it.
1107 AC_SEARCH_LIBS(exc_resume, exc)
1110 AC_SUBST(GNAT_LIBEXC)
1112 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1115 AC_SEARCH_LIBS(kstat_open, kstat)
1116 EXTRA_GCC_LIBS="$LIBS"
1118 AC_SUBST(EXTRA_GCC_LIBS)
1120 # Some systems put ldexp and frexp in libm instead of libc; assume
1121 # they're both in the same place. jcf-dump needs them.
1124 AC_SEARCH_LIBS(ldexp, m)
1129 # Use <inttypes.h> only if it exists,
1130 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1132 AC_MSG_CHECKING(for inttypes.h)
1133 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1134 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1135 [[#define __STDC_FORMAT_MACROS
1136 #include <sys/types.h>
1137 #include <inttypes.h>]],
1142 [gcc_cv_header_inttypes_h=yes],
1143 [gcc_cv_header_inttypes_h=no])])
1144 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1145 if test $gcc_cv_header_inttypes_h = yes; then
1146 AC_DEFINE(HAVE_INTTYPES_H, 1,
1147 [Define if you have a working <inttypes.h> header file.])
1150 dnl Disabled until we have a complete test for buggy enum bitfields.
1151 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1153 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1154 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1155 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1156 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1157 putchar_unlocked putc_unlocked)
1158 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1159 popen sysconf strsignal getrusage nl_langinfo \
1160 gettimeofday mbstowcs wcswidth mmap setlocale \
1161 gcc_UNLOCKED_FUNCS madvise)
1163 if test x$ac_cv_func_mbstowcs = xyes; then
1164 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1165 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1171 [gcc_cv_func_mbstowcs_works=yes],
1172 [gcc_cv_func_mbstowcs_works=no],
1173 [gcc_cv_func_mbstowcs_works=yes])])
1174 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1175 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1176 [Define this macro if mbstowcs does not crash when its
1177 first argument is NULL.])
1181 AC_CHECK_TYPE(ssize_t, int)
1182 AC_CHECK_TYPE(caddr_t, char *)
1184 GCC_AC_FUNC_MMAP_BLACKLIST
1188 # Under VMS, vfork works very differently than on Unix. The standard test
1189 # won't work, and it isn't easily adaptable. It makes more sense to
1191 ac_cv_func_vfork_works=yes
1198 # Until we have in-tree GNU iconv:
1200 AC_SUBST(LIBICONV_DEP)
1206 # We will need to find libiberty.h and ansidecl.h
1207 saved_CFLAGS="$CFLAGS"
1208 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1209 saved_CXXFLAGS="$CXXFLAGS"
1210 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1212 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1213 # normal autoconf function for these. But force definition of
1214 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1215 # basename handling in libiberty.h.
1216 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1217 #undef HAVE_DECL_BASENAME
1218 #define HAVE_DECL_BASENAME 1
1219 #include "ansidecl.h"
1220 #include "system.h"])
1222 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1223 madvise stpcpy strnlen strsignal strverscmp \
1224 strtol strtoul strtoll strtoull \
1225 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1226 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1227 #include "ansidecl.h"
1228 #include "system.h"])
1230 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1231 #include "ansidecl.h"
1233 #ifdef HAVE_SYS_RESOURCE_H
1234 #include <sys/resource.h>
1238 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1239 #include "ansidecl.h"
1241 #ifdef HAVE_SYS_RESOURCE_H
1242 #include <sys/resource.h>
1244 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1245 [Define to `long' if <sys/resource.h> doesn't define.])])
1247 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1248 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1249 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1250 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1251 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1252 #include "ansidecl.h"
1261 gcc_AC_CHECK_DECLS(times, , ,[
1262 #include "ansidecl.h"
1264 #ifdef HAVE_SYS_TIMES_H
1265 #include <sys/times.h>
1269 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1270 #include "ansidecl.h"
1275 # More time-related stuff.
1276 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1277 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1278 #include "ansidecl.h"
1280 #ifdef HAVE_SYS_TIMES_H
1281 #include <sys/times.h>
1283 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1284 if test $ac_cv_struct_tms = yes; then
1285 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1286 [Define if <sys/times.h> defines struct tms.])
1289 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1290 # revisit after autoconf 2.50.
1291 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1292 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1293 #include "ansidecl.h"
1295 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1296 if test $gcc_cv_type_clock_t = yes; then
1297 AC_DEFINE(HAVE_CLOCK_T, 1,
1298 [Define if <time.h> defines clock_t.])
1301 # Check if F_SETLKW is supported by fcntl.
1302 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1303 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1304 #include <fcntl.h>]], [[
1310 return fcntl (1, F_SETLKW, &fl);]])],
1311 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1312 if test $ac_cv_f_setlkw = yes; then
1313 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1314 [Define if F_SETLKW supported by fcntl.])
1317 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1318 CFLAGS="$saved_CFLAGS"
1319 CXXFLAGS="$saved_CXXFLAGS"
1321 # mkdir takes a single argument on some systems.
1322 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1330 # With Setjmp/Longjmp based exception handling.
1331 AC_ARG_ENABLE(sjlj-exceptions,
1332 [AS_HELP_STRING([--enable-sjlj-exceptions],
1333 [arrange to use setjmp/longjmp exception handling])],
1336 if test $enableval != yes; then
1337 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1342 force_sjlj_exceptions=yes],
1345 force_sjlj_exceptions=yes
1349 force_sjlj_exceptions=yes
1353 force_sjlj_exceptions=no
1356 if test $force_sjlj_exceptions = yes; then
1357 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1358 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1359 [Define 0/1 to force the choice for exception handling model.])
1362 # --------------------------------------------------------
1363 # Build, host, and target specific configuration fragments
1364 # --------------------------------------------------------
1366 # Collect build-machine-specific information.
1367 . ${srcdir}/config.build
1369 # Collect host-machine-specific information.
1370 . ${srcdir}/config.host
1374 # Collect target-machine-specific information.
1375 . ${srcdir}/config.gcc
1377 extra_objs="${host_extra_objs} ${extra_objs}"
1378 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1380 # Default the target-machine variables that were not explicitly set.
1381 if test x"$tm_file" = x
1382 then tm_file=$cpu_type/$cpu_type.h; fi
1384 if test x"$extra_headers" = x
1385 then extra_headers=; fi
1387 if test x$md_file = x
1388 then md_file=$cpu_type/$cpu_type.md; fi
1390 if test x$out_file = x
1391 then out_file=$cpu_type/$cpu_type.c; fi
1393 if test x"$tmake_file" = x
1394 then tmake_file=$cpu_type/t-$cpu_type
1397 # Support --enable-initfini-array.
1398 if test x$enable_initfini_array != xno; then
1399 tm_file="${tm_file} initfini-array.h"
1402 if test x"$dwarf2" = xyes
1403 then tm_file="$tm_file tm-dwarf2.h"
1406 # Say what files are being used for the output code and MD file.
1407 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1408 echo "Using \`$srcdir/config/$md_file' as machine description file."
1410 # If any of the xm_file variables contain nonexistent files, warn
1411 # about them and drop them.
1414 for x in $build_xm_file; do
1415 if test -f $srcdir/config/$x
1417 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1423 for x in $host_xm_file; do
1424 if test -f $srcdir/config/$x
1426 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1432 for x in $xm_file; do
1433 if test -f $srcdir/config/$x
1435 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1441 for f in $tm_file; do
1444 if test $count = ax; then
1445 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1447 echo "Using the following target machine macro files:"
1448 for f in $tm_file; do
1449 echo " $srcdir/config/$f"
1453 if test x$use_long_long_for_widest_fast_int = xyes; then
1454 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1455 [Define to 1 if the 'long long' type is wider than 'long' but still
1456 efficiently supported by the host hardware.])
1459 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1460 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1462 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1463 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1466 for f in $host_xm_file; do
1469 if test $count = a; then
1471 elif test $count = ax; then
1472 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1474 echo "Using the following host machine macro files:"
1475 for f in $host_xm_file; do
1476 echo " $srcdir/config/$f"
1479 echo "Using ${out_host_hook_obj} for host machine hooks."
1481 if test "$host_xm_file" != "$build_xm_file"; then
1483 for f in $build_xm_file; do
1486 if test $count = a; then
1488 elif test $count = ax; then
1489 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1491 echo "Using the following build machine macro files:"
1492 for f in $build_xm_file; do
1493 echo " $srcdir/config/$f"
1498 if test -n "$configured_native_system_header_dir"; then
1499 native_system_header_dir=$configured_native_system_header_dir
1501 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1502 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1506 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1507 gcc_cv_mcontext_underscores,
1509 #include <sys/cdefs.h>
1510 #include <sys/signal.h>
1511 #include <ucontext.h>
1512 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1514 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1515 if test $gcc_cv_mcontext_underscores = yes; then
1516 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1517 [mcontext_t fields start with __])
1526 # Check if a valid thread package
1527 case ${enable_threads} in
1530 target_thread_file='single'
1534 target_thread_file='single'
1536 aix | dce | lynx | mipssde | posix | rtems | \
1537 single | tpf | vxworks | win32)
1538 target_thread_file=${enable_threads}
1541 echo "${enable_threads} is an unknown thread package" 1>&2
1546 if test x${thread_file} = x; then
1547 # No thread file set by target-specific clauses in config.gcc,
1548 # so use file chosen by default logic above
1549 thread_file=${target_thread_file}
1557 if test x$enable___cxa_atexit = xyes || \
1558 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1559 if test x$host = x$target; then
1561 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1562 # keyed to flag_use_cxa_atexit
1570 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1571 [echo "__cxa_atexit can't be enabled on this target"])
1575 # We can't check for __cxa_atexit when building a cross, so assume
1579 if test x$use_cxa_atexit = xyes; then
1580 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1581 [Define if you want to use __cxa_atexit, rather than atexit, to
1582 register C++ destructors for local statics and global objects.
1583 This is essential for fully standards-compliant handling of
1584 destructors, but requires __cxa_atexit in libc.])
1588 # Look for a file containing extra machine modes.
1589 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1590 extra_modes_file='$(srcdir)'/config/${extra_modes}
1591 AC_SUBST(extra_modes_file)
1592 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1593 [Define to the name of a file containing a list of extra machine modes
1594 for this architecture.])
1597 # Convert extra_options into a form suitable for Makefile use.
1600 for f in $extra_options; do
1601 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1602 all_opt_files="$all_opt_files $srcdir/config/$f"
1604 AC_SUBST(extra_opt_files)
1606 # auto-host.h is the file containing items generated by autoconf and is
1607 # the first file included by config.h.
1608 # If host=build, it is correct to have bconfig include auto-host.h
1609 # as well. If host!=build, we are in error and need to do more
1610 # work to find out the build config parameters.
1611 if test x$host = x$build
1613 build_auto=auto-host.h
1615 # We create a subdir, then run autoconf in the subdir.
1616 # To prevent recursion we set host and build for the new
1617 # invocation of configure to the build for this invocation
1624 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1625 *) realsrcdir=../${srcdir};;
1627 # Clearing GMPINC is necessary to prevent host headers being
1628 # used by the build compiler. Defining GENERATOR_FILE stops
1629 # system.h from including gmp.h.
1630 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1631 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1632 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1633 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1634 ${realsrcdir}/configure \
1635 --enable-languages=${enable_languages-all} \
1636 --target=$target_alias --host=$build_alias --build=$build_alias
1638 # We just finished tests for the build machine, so rename
1639 # the file auto-build.h in the gcc directory.
1640 mv auto-host.h ../auto-build.h
1643 build_auto=auto-build.h
1645 AC_SUBST(build_subdir)
1647 tm_file="${tm_file} defaults.h"
1648 tm_p_file="${tm_p_file} tm-preds.h"
1649 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1650 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1651 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1652 # put this back in temporarily.
1653 xm_file="auto-host.h ansidecl.h ${xm_file}"
1660 # Compile in configure arguments.
1661 if test -f configargs.h ; then
1662 # Being re-configured.
1663 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1664 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1666 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1669 # Double all backslashes and backslash all quotes to turn
1670 # gcc_config_arguments into a C string.
1671 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1672 $gcc_config_arguments
1674 gcc_config_arguments_str=`cat conftest.out`
1677 cat > configargs.h <<EOF
1678 /* Generated automatically. */
1679 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1680 static const char thread_model[] = "$thread_file";
1682 static const struct {
1683 const char *name, *value;
1684 } configure_default_options[] = $configure_default_options;
1689 gcc_BASEVER=`cat $srcdir/BASE-VER`
1690 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1691 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1692 if test -f $srcdir/REVISION ; then
1693 gcc_REVISION=`cat $srcdir/REVISION`
1697 cat > plugin-version.h <<EOF
1698 #include "configargs.h"
1700 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1701 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1702 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1703 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1705 static char basever[] = "$gcc_BASEVER";
1706 static char datestamp[] = "$gcc_DATESTAMP";
1707 static char devphase[] = "$gcc_DEVPHASE";
1708 static char revision[] = "$gcc_REVISION";
1710 /* FIXME plugins: We should make the version information more precise.
1711 One way to do is to add a checksum. */
1713 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1715 configuration_arguments};
1719 # Internationalization
1720 ZW_GNU_GETTEXT_SISTER_DIR
1722 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1723 # -liconv on the link line twice.
1724 case "$LIBINTL" in *$LIBICONV*)
1728 AC_ARG_ENABLE(secureplt,
1729 [AS_HELP_STRING([--enable-secureplt],
1730 [enable -msecure-plt by default for PowerPC])],
1733 AC_ARG_ENABLE(leading-mingw64-underscores,
1734 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1735 [enable leading underscores on 64 bit mingw targets]),
1737 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1738 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1739 [Define if we should use leading underscore on 64 bit mingw targets])])
1742 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1745 AC_ARG_ENABLE(frame-pointer,
1746 [AS_HELP_STRING([--enable-frame-pointer],
1747 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1750 linux* | darwin[[8912]]*)
1751 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1753 enable_frame_pointer=no
1756 enable_frame_pointer=yes
1761 # Windows32 Registry support for specifying GCC installation paths.
1762 AC_ARG_ENABLE(win32-registry,
1763 [AS_HELP_STRING([--disable-win32-registry],
1764 [disable lookup of installation paths in the
1765 Registry on Windows hosts])
1766 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1767 AS_HELP_STRING([--enable-win32-registry=KEY],
1768 [use KEY instead of GCC version as the last portion
1769 of the registry key])],,)
1772 win32 | pe | cygwin* | mingw32* | uwin*)
1773 if test "x$enable_win32_registry" != xno; then
1774 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1777 if test "x$enable_win32_registry" != xno; then
1778 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1779 [Define to 1 if installation paths should be looked up in the Windows
1780 Registry. Ignored on non-Windows hosts.])
1782 if test "x$enable_win32_registry" != xyes \
1783 && test "x$enable_win32_registry" != x; then
1784 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1785 [Define to be the last component of the Windows registry key under which
1786 to look for installation paths. The full key used will be
1787 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1788 The default is the GCC version number.])
1794 # Get an absolute path to the GCC top-level source directory
1795 holddir=`${PWDCMD-pwd}`
1797 topdir=`${PWDCMD-pwd}`
1800 # Conditionalize the makefile for this host machine.
1802 for f in ${host_xmake_file}
1804 if test -f ${srcdir}/config/$f
1806 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1810 # Conditionalize the makefile for this target machine.
1812 for f in ${tmake_file}
1814 if test -f ${srcdir}/config/$f
1816 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1819 tmake_file="${tmake_file_}"
1821 out_object_file=`basename $out_file .c`.o
1822 common_out_object_file=`basename $common_out_file .c`.o
1824 tm_file_list="options.h"
1825 tm_include_list="options.h insn-constants.h"
1826 for f in $tm_file; do
1829 f=`echo $f | sed 's/^..//'`
1830 tm_file_list="${tm_file_list} $f"
1831 tm_include_list="${tm_include_list} $f"
1834 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1835 tm_include_list="${tm_include_list} $f"
1838 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1839 tm_include_list="${tm_include_list} config/$f"
1846 for f in $tm_p_file; do
1849 tm_p_file_list="${tm_p_file_list} $f"
1850 tm_p_include_list="${tm_p_include_list} $f"
1853 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1854 tm_p_include_list="${tm_p_include_list} config/$f"
1860 for f in $xm_file; do
1863 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1864 xm_include_list="${xm_include_list} $f"
1867 xm_file_list="${xm_file_list} $f"
1868 xm_include_list="${xm_include_list} $f"
1871 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1872 xm_include_list="${xm_include_list} config/$f"
1878 host_xm_include_list=
1879 for f in $host_xm_file; do
1882 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1883 host_xm_include_list="${host_xm_include_list} $f"
1886 host_xm_file_list="${host_xm_file_list} $f"
1887 host_xm_include_list="${host_xm_include_list} $f"
1890 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1891 host_xm_include_list="${host_xm_include_list} config/$f"
1897 for f in $build_xm_file; do
1900 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1901 build_xm_include_list="${build_xm_include_list} $f"
1903 auto-build.h | auto-host.h )
1904 build_xm_file_list="${build_xm_file_list} $f"
1905 build_xm_include_list="${build_xm_include_list} $f"
1908 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1909 build_xm_include_list="${build_xm_include_list} config/$f"
1914 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1915 # cross-compiler which does not use the native headers and libraries.
1916 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1917 CROSS= AC_SUBST(CROSS)
1918 ALL=all.internal AC_SUBST(ALL)
1919 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1921 if test "x$with_build_sysroot" != x; then
1922 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1924 # This value is used, even on a native system, because
1925 # CROSS_SYSTEM_HEADER_DIR is just
1926 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1927 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1930 if test x$host != x$target
1932 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1934 SYSTEM_HEADER_DIR=$build_system_header_dir
1935 case "$host","$target" in
1936 # Darwin crosses can use the host system's libraries and headers,
1937 # because of the fat library support. Of course, it must be the
1938 # same version of Darwin on both sides. Allow the user to
1939 # just say --target=foo-darwin without a version number to mean
1940 # "the version on this system".
1941 *-*-darwin*,*-*-darwin*)
1942 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1943 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1944 if test $hostos = $targetos -o $targetos = darwin ; then
1946 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1951 i?86-*-*,x86_64-*-* \
1952 | powerpc*-*-*,powerpc64*-*-*)
1953 CROSS="$CROSS -DNATIVE_CROSS" ;;
1958 if test "x$with_headers" = x; then
1965 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1966 SYSTEM_HEADER_DIR=$build_system_header_dir
1969 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
1970 if test "x$with_headers" != x; then
1971 target_header_dir=$with_headers
1972 elif test "x$with_sysroot" = x; then
1973 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
1974 elif test "x$with_build_sysroot" != "x"; then
1975 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
1976 elif test "x$with_sysroot" = xyes; then
1977 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
1979 target_header_dir="${with_sysroot}${native_system_header_dir}"
1982 target_header_dir=${native_system_header_dir}
1985 # If this is a cross-compiler that does not
1986 # have its own set of headers then define
1989 # If this is using newlib, without having the headers available now,
1990 # then define inhibit_libc in LIBGCC2_CFLAGS.
1991 # This prevents libgcc2 from containing any code which requires libc
1993 : ${inhibit_libc=false}
1994 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1995 test x$with_newlib = xyes ; } &&
1996 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
1999 AC_SUBST(inhibit_libc)
2001 # When building gcc with a cross-compiler, we need to adjust things so
2002 # that the generator programs are still built with the native compiler.
2003 # Also, we cannot run fixincludes.
2005 # These are the normal (build=host) settings:
2006 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2007 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2008 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2009 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2010 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2011 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2013 # And these apply if build != host, or we are generating coverage data
2014 if test x$build != x$host || test "x$coverage_flags" != x
2016 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2017 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2018 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2021 # Expand extra_headers to include complete path.
2022 # This substitutes for lots of t-* files.
2024 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2025 for file in ${extra_headers} ; do
2026 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2029 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2030 if test x"$use_gcc_tgmath" = xyes
2031 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2034 # Define collect2 in Makefile.
2035 case $host_can_use_collect2 in
2037 *) collect2='collect2$(exeext)' ;;
2039 AC_SUBST([collect2])
2041 # Add a definition of USE_COLLECT2 if system wants one.
2042 case $use_collect2 in
2043 no) use_collect2= ;;
2046 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2047 xm_defines="${xm_defines} USE_COLLECT2"
2048 case $host_can_use_collect2 in
2050 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2056 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2057 [Define to the name of the LTO plugin DSO that must be
2058 passed to the linker's -plugin=LIB option.])
2060 # ---------------------------
2061 # Assembler & linker features
2062 # ---------------------------
2064 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2065 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2066 # However when ld-new is first executed from the build tree, libtool will
2067 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2068 # to the build tree. While doing this we need to use the previous-stage
2069 # linker, or we have an infinite loop. The presence of a shell script as
2070 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2071 # the gcc/collect-ld script. So we need to know how libtool works, or
2072 # exec-tool will fail.
2074 m4_defun([_LT_CONFIG_COMMANDS], [])
2077 AC_SUBST(enable_fast_install)
2079 # Identify the assembler which will work hand-in-glove with the newly
2080 # built GCC, so that we can examine its features. This is the assembler
2081 # which will be driven by the driver program.
2083 # If build != host, and we aren't building gas in-tree, we identify a
2084 # build->target assembler and hope that it will have the same features
2085 # as the host->target assembler we'll be using.
2086 gcc_cv_gas_major_version=
2087 gcc_cv_gas_minor_version=
2088 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2090 m4_pattern_allow([AS_FOR_TARGET])dnl
2091 AS_VAR_SET_IF(gcc_cv_as,, [
2092 if test -x "$DEFAULT_ASSEMBLER"; then
2093 gcc_cv_as="$DEFAULT_ASSEMBLER"
2094 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
2095 && test -f ../gas/Makefile \
2096 && test x$build = x$host; then
2097 gcc_cv_as=../gas/as-new$build_exeext
2098 elif test -x as$build_exeext; then
2099 # Build using assembler in the current directory.
2100 gcc_cv_as=./as$build_exeext
2101 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2102 gcc_cv_as="$AS_FOR_TARGET"
2104 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2107 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2108 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2109 case "$ORIGINAL_AS_FOR_TARGET" in
2110 ./as | ./as$build_exeext) ;;
2111 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2114 AC_MSG_CHECKING(what assembler to use)
2115 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2116 # Single tree build which includes gas. We want to prefer it
2117 # over whatever linker top-level may have detected, since
2118 # we'll use what we're building after installation anyway.
2119 AC_MSG_RESULT(newly built gas)
2121 _gcc_COMPUTE_GAS_VERSION
2122 in_tree_gas_is_elf=no
2123 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2124 || (grep 'obj_format = multi' ../gas/Makefile \
2125 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2127 in_tree_gas_is_elf=yes
2130 AC_MSG_RESULT($gcc_cv_as)
2136 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2137 [case "${enableval}" in
2143 install_gold_as_default=no
2145 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2146 [case "${enableval}" in
2148 install_gold_as_default=yes
2151 if test x${default_ld} != x; then
2152 install_gold_as_default=yes
2158 AC_MSG_ERROR([invalid --enable-gold argument])
2162 # Identify the linker which will work hand-in-glove with the newly
2163 # built GCC, so that we can examine its features. This is the linker
2164 # which will be driven by the driver program.
2166 # If build != host, and we aren't building gas in-tree, we identify a
2167 # build->target linker and hope that it will have the same features
2168 # as the host->target linker we'll be using.
2169 gcc_cv_gld_major_version=
2170 gcc_cv_gld_minor_version=
2171 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2172 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2173 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2175 AS_VAR_SET_IF(gcc_cv_ld,, [
2176 if test -x "$DEFAULT_LINKER"; then
2177 gcc_cv_ld="$DEFAULT_LINKER"
2178 elif test $install_gold_as_default = yes \
2179 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2180 && test -f ../gold/Makefile \
2181 && test x$build = x$host; then
2182 gcc_cv_ld=../gold/ld-new$build_exeext
2183 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2184 && test -f ../ld/Makefile \
2185 && test x$build = x$host; then
2186 gcc_cv_ld=../ld/ld-new$build_exeext
2187 elif test -x collect-ld$build_exeext; then
2188 # Build using linker in the current directory.
2189 gcc_cv_ld=./collect-ld$build_exeext
2190 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2191 gcc_cv_ld="$LD_FOR_TARGET"
2193 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2196 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2197 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2198 # if the PLUGIN_LD is set ld-new, just have it as ld
2199 # as that is the installed named.
2200 if test x$PLUGIN_LD_SUFFIX = xld-new \
2201 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2204 AC_ARG_WITH(plugin-ld,
2205 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2206 [if test x"$withval" != x; then
2207 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2208 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2210 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2211 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2213 # Check to see if we are using gold instead of ld
2214 AC_MSG_CHECKING(whether we are using gold)
2216 if test x$gcc_cv_ld != x; then
2217 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2218 | grep "GNU gold" > /dev/null; then
2222 AC_MSG_RESULT($ld_is_gold)
2224 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2225 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2226 case "$ORIGINAL_LD_FOR_TARGET" in
2227 ./collect-ld | ./collect-ld$build_exeext) ;;
2228 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2231 AC_MSG_CHECKING(what linker to use)
2232 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2233 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2234 # Single tree build which includes ld. We want to prefer it
2235 # over whatever linker top-level may have detected, since
2236 # we'll use what we're building after installation anyway.
2237 AC_MSG_RESULT(newly built ld)
2239 in_tree_ld_is_elf=no
2240 if (grep 'EMUL = .*elf' ../ld/Makefile \
2241 || grep 'EMUL = .*linux' ../ld/Makefile \
2242 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2243 in_tree_ld_is_elf=yes
2244 elif test "$ld_is_gold" = yes; then
2245 in_tree_ld_is_elf=yes
2247 for f in $gcc_cv_ld_bfd_srcdir/configure $gcc_cv_ld_gld_srcdir/configure $gcc_cv_ld_gld_srcdir/configure.in $gcc_cv_ld_gld_srcdir/Makefile.in
2250 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2251 if test x$gcc_cv_gld_version != x; then
2255 case $gcc_cv_gld_version in
2258 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2261 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2262 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2264 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2265 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2267 AC_MSG_RESULT($gcc_cv_ld)
2269 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2270 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2271 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2274 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2275 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2277 # Figure out what nm we will be using.
2278 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2279 AS_VAR_SET_IF(gcc_cv_nm,, [
2280 if test -f $gcc_cv_binutils_srcdir/configure.in \
2281 && test -f ../binutils/Makefile \
2282 && test x$build = x$host; then
2283 gcc_cv_nm=../binutils/nm-new$build_exeext
2284 elif test -x nm$build_exeext; then
2285 gcc_cv_nm=./nm$build_exeext
2286 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2287 gcc_cv_nm="$NM_FOR_TARGET"
2289 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2292 AC_MSG_CHECKING(what nm to use)
2293 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2294 # Single tree build which includes binutils.
2295 AC_MSG_RESULT(newly built nm)
2298 AC_MSG_RESULT($gcc_cv_nm)
2302 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2303 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2304 case "$ORIGINAL_NM_FOR_TARGET" in
2305 ./nm | ./nm$build_exeext) ;;
2306 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2310 # Figure out what objdump we will be using.
2311 AS_VAR_SET_IF(gcc_cv_objdump,, [
2312 if test -f $gcc_cv_binutils_srcdir/configure.in \
2313 && test -f ../binutils/Makefile \
2314 && test x$build = x$host; then
2315 # Single tree build which includes binutils.
2316 gcc_cv_objdump=../binutils/objdump$build_exeext
2317 elif test -x objdump$build_exeext; then
2318 gcc_cv_objdump=./objdump$build_exeext
2319 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2320 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2322 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2325 AC_MSG_CHECKING(what objdump to use)
2326 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2327 # Single tree build which includes binutils.
2328 AC_MSG_RESULT(newly built objdump)
2329 elif test x$gcc_cv_objdump = x; then
2330 AC_MSG_RESULT(not found)
2332 AC_MSG_RESULT($gcc_cv_objdump)
2335 # Figure out what readelf we will be using.
2336 AS_VAR_SET_IF(gcc_cv_readelf,, [
2337 if test -f $gcc_cv_binutils_srcdir/configure.in \
2338 && test -f ../binutils/Makefile \
2339 && test x$build = x$host; then
2340 # Single tree build which includes binutils.
2341 gcc_cv_readelf=../binutils/readelf$build_exeext
2342 elif test -x readelf$build_exeext; then
2343 gcc_cv_readelf=./readelf$build_exeext
2345 AC_PATH_PROG(gcc_cv_readelf, readelf)
2348 AC_MSG_CHECKING(what readelf to use)
2349 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2350 # Single tree build which includes binutils.
2351 AC_MSG_RESULT(newly built readelf)
2352 elif test x$gcc_cv_readelf = x; then
2353 AC_MSG_RESULT(not found)
2355 AC_MSG_RESULT($gcc_cv_readelf)
2358 # Figure out what assembler alignment features are present.
2359 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2363 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2364 [Define if your assembler supports .balign and .p2align.])])
2366 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2369 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2370 [Define if your assembler supports specifying the maximum number
2371 of bytes to skip when using the GAS .p2align command.])])
2373 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2376 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2377 [Define if your assembler supports .literal16.])])
2379 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2381 [conftest_label1: .word 0
2383 conftest_label2: .word 0
2385 [if test x$gcc_cv_nm != x; then
2386 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2387 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2388 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2390 else gcc_cv_as_subsection_m1=yes
2392 rm -f conftest.nm1 conftest.nm2
2394 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2395 [Define if your assembler supports .subsection and .subsection -1 starts
2396 emitting at the beginning of your section.])])
2398 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2401 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2403 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2405 [ .weakref foobar, barfnot],,
2406 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2408 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2411 .NSUBSPA $CODE$,COMDAT],,
2412 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2414 # .hidden needs to be supported in both the assembler and the linker,
2415 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2416 # This is irritatingly difficult to feature test for; we have to check the
2417 # date string after the version number. If we've got an in-tree
2418 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2420 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2421 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2427 # Darwin as has some visibility support, though with a different syntax.
2428 gcc_cv_as_hidden=yes
2432 # gnu_indirect_function type is an extension proposed at
2433 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2434 # selection of function implementation
2435 AC_ARG_ENABLE(gnu-indirect-function,
2436 [AS_HELP_STRING([--enable-gnu-indirect-function],
2437 [enable the use of the @gnu_indirect_function to glibc systems])],
2438 [case $enable_gnu_indirect_function in
2440 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2441 Valid choices are 'yes' and 'no'.]) ;;
2443 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2445 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2446 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2447 [Define if your system supports gnu indirect functions.])
2451 if test $in_tree_ld != yes ; then
2452 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2453 if echo "$ld_ver" | grep GNU > /dev/null; then
2454 if test x"$ld_is_gold" = xyes; then
2455 # GNU gold --version looks like this:
2457 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2459 # We extract the binutils version which is more familiar and specific
2460 # than the gold version.
2461 ld_vers=`echo $ld_ver | sed -n \
2462 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2464 # GNU ld --version looks like this:
2466 # GNU ld (GNU Binutils) 2.21.51.20110225
2467 ld_vers=`echo $ld_ver | sed -n \
2468 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2470 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2471 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2472 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2473 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2477 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2480 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2481 # /usr/ccs/bin/ld has been configured.
2482 ld_ver=`$gcc_cv_ld -V 2>&1`
2483 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2484 ld_vers=`echo $ld_ver | sed -n \
2485 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2486 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2487 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2495 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2496 [[if test $in_tree_ld = yes ; then
2498 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2499 && test $in_tree_ld_is_elf = yes; then
2500 gcc_cv_ld_hidden=yes
2503 gcc_cv_ld_hidden=yes
2504 if test x"$ld_is_gold" = xyes; then
2506 elif echo "$ld_ver" | grep GNU > /dev/null; then
2508 mmix-knuth-mmixware)
2509 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2513 if test 0"$ld_date" -lt 20020404; then
2514 if test -n "$ld_date"; then
2515 # If there was date string, but was earlier than 2002-04-04, fail
2517 elif test -z "$ld_vers"; then
2518 # If there was no date string nor ld version number, something is wrong
2521 test -z "$ld_vers_patch" && ld_vers_patch=0
2522 if test "$ld_vers_major" -lt 2; then
2524 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2525 gcc_cv_ld_hidden="no"
2526 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2534 # Darwin ld has some visibility support.
2535 gcc_cv_ld_hidden=yes
2537 hppa64*-*-hpux* | ia64*-*-hpux*)
2538 gcc_cv_ld_hidden=yes
2540 *-*-solaris2.1[0-9]*)
2541 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2542 # .symbolic was only added in Solaris 9 12/02.
2543 gcc_cv_ld_hidden=yes
2551 libgcc_visibility=no
2552 AC_SUBST(libgcc_visibility)
2553 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2554 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2555 libgcc_visibility=yes
2556 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2557 [Define if your assembler and linker support .hidden.])
2560 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2561 gcc_cv_ld_ro_rw_mix=unknown
2562 if test $in_tree_ld = yes ; then
2563 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2564 && test $in_tree_ld_is_elf = yes; then
2565 gcc_cv_ld_ro_rw_mix=read-write
2567 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2568 echo '.section myfoosect, "a"' > conftest1.s
2569 echo '.section myfoosect, "aw"' > conftest2.s
2570 echo '.byte 1' >> conftest2.s
2571 echo '.section myfoosect, "a"' > conftest3.s
2572 echo '.byte 0' >> conftest3.s
2573 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2574 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2575 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2576 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2577 conftest2.o conftest3.o > /dev/null 2>&1; then
2578 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2579 | sed -e '/myfoosect/!d' -e N`
2580 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2581 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2582 gcc_cv_ld_ro_rw_mix=read-only
2584 gcc_cv_ld_ro_rw_mix=read-write
2589 rm -f conftest.* conftest[123].*
2592 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2593 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2594 [Define if your linker links a mix of read-only
2595 and read-write sections into a read-write section.])
2597 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2599 gcc_AC_INITFINI_ARRAY
2601 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2602 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2610 [[# GAS versions before 2.11 do not support uleb128,
2611 # despite appearing to.
2612 # ??? There exists an elf-specific test that will crash
2613 # the assembler. Perhaps it's better to figure out whether
2614 # arbitrary sections are supported and try the test.
2615 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2616 if echo "$as_ver" | grep GNU > /dev/null; then
2617 as_vers=`echo $as_ver | sed -n \
2618 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2619 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2620 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2621 if test $as_major -eq 2 && test $as_minor -lt 11
2623 else gcc_cv_as_leb128=yes
2626 [AC_DEFINE(HAVE_AS_LEB128, 1,
2627 [Define if your assembler supports .sleb128 and .uleb128.])])
2629 # Check if we have assembler support for unwind directives.
2630 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2637 .cfi_escape 1, 2, 3, 4, 5
2641 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2642 # read-only and read-write sections, we need to make sure that the
2643 # assembler used emits read-write .eh_frame sections.
2644 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2645 if test "x$gcc_cv_objdump" != x; then
2646 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2647 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2648 gcc_cv_as_cfi_directive=no
2651 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2652 # On Solaris/x86, make sure that GCC and assembler agree on using
2653 # read-only .eh_frame sections for 64-bit.
2654 if test x$gas = xyes; then
2655 as_ix86_64_opt="--64"
2657 as_ix86_64_opt="-xarch=amd64"
2659 if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \
2660 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2661 sed -e /.eh_frame/!d -e N | \
2662 grep READONLY > /dev/null; then
2663 gcc_cv_as_cfi_directive=yes
2665 gcc_cv_as_cfi_directive=no
2669 gcc_cv_as_cfi_directive=yes
2674 # no objdump, err on the side of caution
2675 gcc_cv_as_cfi_directive=no
2678 gcc_cv_as_cfi_directive=yes
2682 gcc_cv_as_cfi_directive=yes
2685 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2686 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2690 .cfi_adjust_cfa_offset 64
2692 .cfi_adjust_cfa_offset 128
2695 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2696 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2697 gcc_cv_as_cfi_advance_working=yes
2701 # no objdump, err on the side of caution
2702 gcc_cv_as_cfi_advance_working=no
2704 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2705 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2706 [`if test $gcc_cv_as_cfi_directive = yes \
2707 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2708 [Define 0/1 if your assembler supports CFI directives.])
2710 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2711 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2712 gcc_cv_as_cfi_personality_directive, ,,
2715 .cfi_personality 0, symbol
2717 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2718 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2719 then echo 1; else echo 0; fi`],
2720 [Define 0/1 if your assembler supports .cfi_personality.])
2722 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2723 gcc_cv_as_cfi_sections_directive, ,,
2725 .cfi_sections .debug_frame, .eh_frame
2729 win32 | pe | cygwin* | mingw32* | uwin*)
2730 # Need to check that we generated the correct relocation for the
2731 # .debug_frame section. This was fixed for binutils 2.21.
2732 gcc_cv_as_cfi_sections_directive=no
2733 if test "x$gcc_cv_objdump" != x; then
2734 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2735 grep secrel > /dev/null; then
2736 gcc_cv_as_cfi_sections_directive=yes
2741 gcc_cv_as_cfi_sections_directive=yes
2744 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2745 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2746 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2747 then echo 1; else echo 0; fi`],
2748 [Define 0/1 if your assembler supports .cfi_sections.])
2750 # GAS versions up to and including 2.11.0 may mis-optimize
2752 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2760 .section .eh_frame,"aw",@progbits
2762 .4byte .LECIE1-.LSCIE1
2776 .4byte .LEFDE1-.LASFDE1
2778 .4byte .LASFDE1-__FRAME_BEGIN__
2786 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2787 cat > conftest.lit <<EOF
2788 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2789 0010 01000000 12000000 18000000 00000000 ................
2790 0020 08000000 04080000 0044 .........D @&t@
2792 cat > conftest.big <<EOF
2793 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2794 0010 00000001 00000012 00000018 00000000 ................
2795 0020 00000008 04000000 0844 .........D @&t@
2797 # If the assembler didn't choke, and we can objdump,
2798 # and we got the correct data, then succeed.
2799 # The text in the here-document typically retains its unix-style line
2800 # endings, while the output of objdump will use host line endings.
2801 # Therefore, use diff -b for the comparisons.
2802 if test x$gcc_cv_objdump != x \
2803 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2804 | tail -3 > conftest.got \
2805 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2806 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2808 gcc_cv_as_eh_frame=yes
2809 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2810 gcc_cv_as_eh_frame=buggy
2812 # Uh oh, what do we do now?
2813 gcc_cv_as_eh_frame=no
2816 if test $gcc_cv_as_eh_frame = buggy; then
2817 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2818 [Define if your assembler mis-optimizes .eh_frame data.])
2821 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2822 [elf,2,12,0], [--fatal-warnings],
2823 [.section .rodata.str, "aMS", @progbits, 1])
2824 if test $gcc_cv_as_shf_merge = no; then
2825 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2826 [elf,2,12,0], [--fatal-warnings],
2827 [.section .rodata.str, "aMS", %progbits, 1])
2829 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2830 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2831 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2833 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2834 gcc_cv_as_comdat_group,
2835 [elf,2,16,0], [--fatal-warnings],
2836 [.section .text,"axG",@progbits,.foo,comdat])
2837 if test $gcc_cv_as_comdat_group = yes; then
2838 gcc_cv_as_comdat_group_percent=no
2839 gcc_cv_as_comdat_group_group=no
2841 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2842 gcc_cv_as_comdat_group_percent,
2843 [elf,2,16,0], [--fatal-warnings],
2844 [.section .text,"axG",%progbits,.foo,comdat])
2845 if test $gcc_cv_as_comdat_group_percent = yes; then
2846 gcc_cv_as_comdat_group_group=no
2849 # Sun as uses a completely different syntax.
2854 .group foo,".text%foo",#comdat
2855 .section ".text%foo", #alloc,#execinstr,#progbits
2860 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2862 .group foo,.text%foo,#comdat
2863 .section .text%foo, "ax", @progbits
2869 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2870 gcc_cv_as_comdat_group_group,
2874 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2875 gcc_cv_as_comdat_group_group=no
2879 if test x"$ld_is_gold" = xyes; then
2881 elif test $in_tree_ld = yes ; then
2883 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2884 && test $in_tree_ld_is_elf = yes; then
2887 elif echo "$ld_ver" | grep GNU > /dev/null; then
2889 if test 0"$ld_date" -lt 20050308; then
2890 if test -n "$ld_date"; then
2891 # If there was date string, but was earlier than 2005-03-08, fail
2893 elif test "$ld_vers_major" -lt 2; then
2895 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2902 *-*-solaris2.1[1-9]*)
2904 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2905 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2908 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2909 # least ld version 1.2267.
2910 if test "$ld_vers_major" -gt 1; then
2912 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2914 elif test "$ld_vers_minor" -ge 2267; then
2919 # Assume linkers other than GNU ld don't support COMDAT group.
2925 # Allow overriding the automatic COMDAT group tests above.
2926 AC_ARG_ENABLE(comdat,
2927 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2928 [comdat_group="$enable_comdat"])
2929 if test $comdat_group = no; then
2930 gcc_cv_as_comdat_group=no
2931 gcc_cv_as_comdat_group_percent=no
2932 gcc_cv_as_comdat_group_group=no
2934 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2935 [`if test $gcc_cv_as_comdat_group = yes \
2936 || test $gcc_cv_as_comdat_group_percent = yes \
2937 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2938 [Define 0/1 if your assembler and linker support COMDAT groups.])
2940 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2941 gcc_cv_as_discriminator,
2945 .loc 1 1 0 discriminator 1],,
2946 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2947 [Define if your assembler supports the .loc discriminator sub-directive.])])
2949 # Thread-local storage - the check is heavily parameterized.
2958 .section ".tdata","awT",@progbits
2961 ldq $27,__tls_get_addr($29) !literal!1
2962 lda $16,foo($29) !tlsgd!1
2963 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2964 ldq $27,__tls_get_addr($29) !literal!2
2965 lda $16,foo($29) !tlsldm!2
2966 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2967 ldq $1,foo($29) !gotdtprel
2968 ldah $2,foo($29) !dtprelhi
2969 lda $3,foo($2) !dtprello
2970 lda $4,foo($29) !dtprel
2971 ldq $1,foo($29) !gottprel
2972 ldah $2,foo($29) !tprelhi
2973 lda $3,foo($2) !tprello
2974 lda $4,foo($29) !tprel'
2977 tls_as_opt=--fatal-warnings
2979 cris-*-*|crisv32-*-*)
2981 .section ".tdata","awT",@progbits
2988 tls_as_opt=--fatal-warnings
2992 .section ".tdata","awT",@progbits
3004 .section ".tdata","awT",@progbits
3008 addil LT%foo-$tls_gdidx$,gp
3009 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3012 addil LT%foo-$tls_ldidx$,gp
3014 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3015 addil LR%foo-$tls_dtpoff$,%ret0
3016 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3018 addil LT%foo-$tls_ieoff$,gp
3019 ldw RT%foo-$tls_ieoff$(%r1),%t2
3022 addil LR%foo-$tls_leoff$,%t1
3023 ldo RR%foo-$tls_leoff$(%r1),%t2'
3026 tls_as_opt=--fatal-warnings
3030 .section ".tdata","awT",%progbits
3041 i[34567]86-*-* | x86_64-*-*)
3043 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3050 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3052 .section .tdata,"awt",@progbits'
3057 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3058 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3062 .section ".tdata","awT",@progbits'
3066 tls_as_opt="--fatal-warnings"
3070 conftest_s="$conftest_s
3074 leal foo@tlsgd(,%ebx,1), %eax
3075 leal foo@tlsldm(%ebx), %eax
3076 leal foo@dtpoff(%eax), %edx
3077 movl foo@gottpoff(%ebx), %eax
3078 subl foo@gottpoff(%ebx), %eax
3079 addl foo@gotntpoff(%ebx), %eax
3080 movl foo@indntpoff, %eax
3081 movl \$foo@tpoff, %eax
3082 subl \$foo@tpoff, %eax
3083 leal foo@ntpoff(%ecx), %eax"
3086 if test x$on_solaris = xyes; then
3088 yes) tls_as_opt="$tls_as_opt --64" ;;
3089 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3092 conftest_s="$conftest_s
3096 leaq foo@tlsgd(%rip), %rdi
3097 leaq foo@tlsld(%rip), %rdi
3098 leaq foo@dtpoff(%rax), %rdx
3099 movq foo@gottpoff(%rip), %rax
3100 movq \$foo@tpoff, %rax"
3106 .section ".tdata","awT",@progbits
3109 addl r16 = @ltoff(@dtpmod(foo#)), gp
3110 addl r17 = @ltoff(@dtprel(foo#)), gp
3111 addl r18 = @ltoff(@tprel(foo#)), gp
3112 addl r19 = @dtprel(foo#), gp
3113 adds r21 = @dtprel(foo#), r13
3114 movl r23 = @dtprel(foo#)
3115 addl r20 = @tprel(foo#), gp
3116 adds r22 = @tprel(foo#), r13
3117 movl r24 = @tprel(foo#)'
3120 tls_as_opt=--fatal-warnings
3124 .section .tdata,"awT",@progbits
3128 addik r5,r20,x@TLSGD
3129 addik r5,r20,x@TLSLDM'
3132 tls_as_opt='--fatal-warnings'
3136 .section .tdata,"awT",@progbits
3140 addiu $4, $28, %tlsgd(x)
3141 addiu $4, $28, %tlsldm(x)
3142 lui $4, %dtprel_hi(x)
3143 addiu $4, $4, %dtprel_lo(x)
3144 lw $4, %gottprel(x)($28)
3145 lui $4, %tprel_hi(x)
3146 addiu $4, $4, %tprel_lo(x)'
3149 tls_as_opt='-32 --fatal-warnings'
3153 .section .tdata,"awT",@progbits
3158 move.l x@TLSGD(%a5),%a0
3159 move.l x@TLSLDM(%a5),%a0
3160 move.l x@TLSLDO(%a5),%a0
3161 move.l x@TLSIE(%a5),%a0
3162 move.l x@TLSLE(%a5),%a0'
3165 tls_as_opt='--fatal-warnings'
3169 .section ".tdata","awT",@progbits'
3172 tls_as_opt="--fatal-warnings"
3176 .section ".tdata","awT",%progbits
3180 add x0, x0, #:tlsgd_lo12:x
3185 tls_as_opt='--fatal-warnings'
3189 .extern __get_tpointer
3207 .section ".tdata","awT",@progbits
3215 addi 3,2,ld0@got@tlsgd
3221 addi 3,2,x1@got@tlsld
3227 addis 9,3,x2@dtprel@ha
3228 addi 9,9,x2@dtprel@l
3231 ld 9,x3@got@dtprel(2)
3237 tls_as_opt="-a64 --fatal-warnings"
3241 .section ".tdata","awT",@progbits
3249 addi 3,31,ld0@got@tlsgd
3251 addi 3,31,x1@got@tlsld
3254 addis 9,3,x2@dtprel@ha
3255 addi 9,9,x2@dtprel@l
3256 lwz 9,x3@got@tprel(31)
3259 addis 9,2,x2@tprel@ha
3260 addi 9,9,x2@tprel@l'
3263 tls_as_opt="-a32 --fatal-warnings"
3267 .section ".tdata","awT",@progbits
3276 l %r1,foo@GOTNTPOFF(%r12)
3277 l %r1,0(%r1):tls_load:foo
3278 bas %r14,0(%r1,%r13):tls_gdcall:foo
3279 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3282 tls_as_opt="-m31 --fatal-warnings"
3286 .section ".tdata","awT",@progbits
3294 lg %r1,foo@GOTNTPOFF(%r12)
3295 larl %r1,foo@INDNTPOFF
3296 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3297 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3300 tls_as_opt="-m64 -Aesame --fatal-warnings"
3302 sh-*-* | sh[34]-*-*)
3304 .section ".tdata","awT",@progbits
3314 tls_as_opt=--fatal-warnings
3318 sparc*-sun-solaris2.*)
3325 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3327 .section ".tdata",#alloc,#write,#tls'
3332 .section ".tdata","awT",@progbits'
3335 tls_as_opt="-32 --fatal-warnings"
3337 conftest_s="$conftest_s
3340 sethi %tgd_hi22(foo), %o0
3341 add %o0, %tgd_lo10(foo), %o1
3342 add %l7, %o1, %o0, %tgd_add(foo)
3343 call __tls_get_addr, %tgd_call(foo)
3344 sethi %tldm_hi22(foo), %l1
3345 add %l1, %tldm_lo10(foo), %l2
3346 add %l7, %l2, %o0, %tldm_add(foo)
3347 call __tls_get_addr, %tldm_call(foo)
3348 sethi %tldo_hix22(foo), %l3
3349 xor %l3, %tldo_lox10(foo), %l4
3350 add %o0, %l4, %l5, %tldo_add(foo)
3351 sethi %tie_hi22(foo), %o3
3352 add %o3, %tie_lo10(foo), %o3
3353 ld [%l7 + %o3], %o2, %tie_ld(foo)
3354 add %g7, %o2, %o4, %tie_add(foo)
3355 sethi %tle_hix22(foo), %l1
3356 xor %l1, %tle_lox10(foo), %o5
3357 ld [%g7 + %o5], %o1"
3361 .section ".tdata","awT",@progbits
3364 addli r0, zero, tls_gd(foo)
3365 auli r0, zero, tls_gd_ha16(foo)
3366 addli r0, r0, tls_gd_lo16(foo)
3368 addli r0, zero, tls_ie(foo)
3369 auli r0, r0, tls_ie_ha16(foo)
3370 addli r0, r0, tls_ie_lo16(foo)'
3373 tls_as_opt="--fatal-warnings"
3377 .section ".tdata","awT",@progbits
3380 shl16insli r0, zero, hw0_last_tls_gd(foo)
3381 shl16insli r0, zero, hw1_last_tls_gd(foo)
3382 shl16insli r0, r0, hw0_tls_gd(foo)
3384 shl16insli r0, zero, hw1_last_tls_ie(foo)
3385 shl16insli r0, r0, hw0_tls_ie(foo)'
3388 tls_as_opt="--fatal-warnings"
3392 .section ".tdata","awT",@progbits
3395 movi a8, foo@TLSFUNC
3396 movi a10, foo@TLSARG
3397 callx8.tls a8, foo@TLSCALL'
3404 if test "x$enable_tls" = xno ; then
3405 : # TLS explicitly disabled.
3406 elif test "x$enable_tls" = xyes ; then
3407 set_have_as_tls=yes # TLS explicitly enabled.
3408 elif test -z "$tls_first_major"; then
3409 : # If we don't have a check, assume no support.
3411 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3412 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3413 [set_have_as_tls=yes])
3415 if test $set_have_as_tls = yes ; then
3416 AC_DEFINE(HAVE_AS_TLS, 1,
3417 [Define if your assembler and linker support thread-local storage.])
3420 # Target-specific assembler checks.
3422 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3423 gcc_cv_ld_static_dynamic=no
3424 gcc_cv_ld_static_option='-Bstatic'
3425 gcc_cv_ld_dynamic_option='-Bdynamic'
3426 if test $in_tree_ld = yes ; then
3427 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3428 gcc_cv_ld_static_dynamic=yes
3430 elif test x$gcc_cv_ld != x; then
3431 # Check if linker supports -Bstatic/-Bdynamic option
3432 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3433 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3434 gcc_cv_ld_static_dynamic=yes
3437 # AIX ld uses -b flags
3438 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3439 gcc_cv_ld_static_dynamic=yes
3440 gcc_cv_ld_static_option="-bstatic"
3441 gcc_cv_ld_dynamic_option="-bdynamic"
3443 # HP-UX ld uses -a flags to select between shared and archive.
3445 if test x"$gnu_ld" = xno; then
3446 gcc_cv_ld_static_dynamic=yes
3447 gcc_cv_ld_static_option="-aarchive_shared"
3448 gcc_cv_ld_dynamic_option="-adefault"
3451 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3453 gcc_cv_ld_static_dynamic=yes
3458 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3459 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3460 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3461 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3462 [Define to the linker option to disable use of shared objects.])
3463 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3464 [Define to the linker option to enable use of shared objects.])
3466 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3468 if test x"$demangler_in_ld" = xyes; then
3469 AC_MSG_CHECKING(linker --demangle support)
3470 gcc_cv_ld_demangle=no
3471 if test $in_tree_ld = yes; then
3472 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3473 gcc_cv_ld_demangle=yes
3475 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3476 # Check if the GNU linker supports --demangle option
3477 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3478 gcc_cv_ld_demangle=yes
3481 if test x"$gcc_cv_ld_demangle" = xyes; then
3482 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3483 [Define if your linker supports --demangle option.])
3485 AC_MSG_RESULT($gcc_cv_ld_demangle)
3488 AC_MSG_CHECKING(linker plugin support)
3490 if test -f liblto_plugin.la; then
3491 save_ld_ver="$ld_ver"
3492 save_ld_vers_major="$ld_vers_major"
3493 save_ld_vers_minor="$ld_vers_minor"
3494 save_ld_is_gold="$ld_is_gold"
3498 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3500 # FIXME: ld_is_gold?
3501 ld_vers_major="$gcc_cv_gld_major_version"
3502 ld_vers_minor="$gcc_cv_gld_minor_version"
3504 # Determine plugin linker version.
3505 # FIXME: Partial duplicate from above, generalize.
3507 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3508 if echo "$ld_ver" | grep GNU > /dev/null; then
3509 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3511 ld_vers=`echo $ld_ver | sed -n \
3512 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3514 ld_vers=`echo $ld_ver | sed -n \
3515 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3517 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3518 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3523 # Determine plugin support.
3524 if echo "$ld_ver" | grep GNU > /dev/null; then
3525 # Require GNU ld or gold 2.21+ for plugin support by default.
3526 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3528 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3529 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3534 ld_ver="$save_ld_ver"
3535 ld_vers_major="$save_ld_vers_major"
3536 ld_vers_minor="$save_ld_vers_minor"
3537 ld_is_gold="$save_ld_is_gold"
3539 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3540 [Define to the level of your linker's plugin support.])
3541 AC_MSG_RESULT($gcc_cv_lto_plugin)
3545 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3546 [-mabi=lp64], [.text],,,)
3547 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3548 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3549 [Define if your assembler supports the -mabi option.])
3551 if test x$with_abi = xilp32; then
3552 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3553 Upgrade the Assembler.])
3555 if test x"$with_multilib_list" = xdefault; then
3556 TM_MULTILIB_CONFIG=lp64
3558 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3559 for aarch64_multilib in ${aarch64_multilibs}; do
3560 case ${aarch64_multilib} in
3562 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3563 Upgrade the Assembler.])
3571 # Check if we have binutils support for relocations types needed by -fpic
3572 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3575 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3576 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3577 [Define if your assembler supports relocs needed by -fpic.])])
3578 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3579 AC_ARG_ENABLE(fix-cortex-a53-835769,
3581 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3582 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3583 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3584 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3589 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3594 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3595 Valid choices are 'yes' and 'no'.])
3601 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3602 AC_ARG_ENABLE(fix-cortex-a53-843419,
3604 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3605 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3606 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3607 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3612 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3617 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3618 Valid choices are 'yes' and 'no'.])
3626 # All TARGET_ABI_OSF targets.
3627 alpha*-*-linux* | alpha*-*-*bsd*)
3628 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3629 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3632 extbl $3, $2, $3 !lituse_bytoff!1
3633 ldq $2, a($29) !literal!1
3634 ldq $4, b($29) !literal!2
3635 ldq_u $3, 0($2) !lituse_base!1
3636 ldq $27, f($29) !literal!5
3637 jsr $26, ($27), f !lituse_jsr!5
3638 ldah $29, 0($26) !gpdisp!3
3639 lda $0, c($29) !gprel
3640 ldah $1, d($29) !gprelhigh
3641 lda $1, d($1) !gprellow
3642 lda $29, 0($29) !gpdisp!3],,
3643 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3644 [Define if your assembler supports explicit relocations.])])
3645 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3646 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3649 ldq $27, a($29) !literal!1
3650 jsr $26, ($27), a !lituse_jsrdirect!1],,
3651 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3652 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3656 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3657 [--mlink-relax], [.text],,
3658 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3659 [Define if your avr assembler supports --mlink-relax option.])])
3661 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3663 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3664 [Define if your avr assembler supports -mrmw option.])])
3668 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3669 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3670 [-no-mul-bug-abort], [.text],,
3671 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3672 [Define if your assembler supports the -no-mul-bug-abort option.])])
3676 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3677 [.register %g2, #scratch],,
3678 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3679 [Define if your assembler supports .register.])])
3681 gcc_GAS_CHECK_FEATURE([@%:@nobits], gcc_cv_as_sparc_nobits,,,
3682 [.section "nobits",#alloc,#write,#nobits
3683 .section "progbits",#alloc,#write,#progbits])
3684 AC_DEFINE_UNQUOTED(HAVE_AS_SPARC_NOBITS,
3685 [`if test $gcc_cv_as_sparc_nobits = yes; then echo 1; else echo 0; fi`],
3686 [Define to 1 if your assembler supports #nobits, 0 otherwise.])
3688 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3690 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3691 [Define if your assembler supports -relax option.])])
3693 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3694 gcc_cv_as_sparc_gotdata_op,,
3701 sethi %gdop_hix22(foo), %g1
3702 xor %g1, %gdop_lox10(foo), %g1
3703 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3704 [if test x$gcc_cv_ld != x \
3705 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3706 if test x$gcc_cv_objdump != x; then
3707 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3708 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3709 gcc_cv_as_sparc_gotdata_op=no
3711 gcc_cv_as_sparc_gotdata_op=yes
3716 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3717 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3719 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3720 gcc_cv_as_sparc_ua_pcrel,,
3728 .uaword %r_disp32(foo)],
3729 [if test x$gcc_cv_ld != x \
3730 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3731 gcc_cv_as_sparc_ua_pcrel=yes
3734 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3735 [Define if your assembler and linker support unaligned PC relative relocs.])
3737 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3738 gcc_cv_as_sparc_ua_pcrel_hidden,,
3743 .uaword %r_disp32(foo)
3744 .byte 0x32, 0x33, 0x34
3749 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3750 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3751 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3752 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3753 if $gcc_cv_objdump -R conftest 2> /dev/null \
3754 | grep 'DISP32' > /dev/null 2>&1; then
3757 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3761 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3762 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3763 ]) # unaligned pcrel relocs
3765 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3766 gcc_cv_as_sparc_offsetable_lo10,,
3769 or %g1, %lo(ab) + 12, %g1
3770 or %g1, %lo(ab + 12), %g1],
3771 [if test x$gcc_cv_objdump != x \
3772 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3773 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3774 gcc_cv_as_sparc_offsetable_lo10=yes
3776 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3777 [Define if your assembler supports offsetable %lo().])])
3779 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3780 gcc_cv_as_sparc_fmaf,,
3783 .register %g2, #scratch
3784 .register %g3, #scratch
3786 fmaddd %f0, %f2, %f4, %f6
3787 addxccc %g1, %g2, %g3
3788 fsrl32 %f2, %f4, %f8
3789 fnaddd %f10, %f12, %f14],,
3790 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3791 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3793 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3794 gcc_cv_as_sparc_sparc4,,
3797 .register %g2, #scratch
3798 .register %g3, #scratch
3801 1: cwbneg %g2, %g3, 1f
3804 aes_kexpand0 %f4, %f6, %f8
3805 des_round %f38, %f40, %f42, %f44
3806 camellia_f %f54, %f56, %f58, %f60
3807 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3808 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3809 [Define if your assembler supports SPARC4 instructions.])])
3811 gcc_GAS_CHECK_FEATURE([LEON instructions],
3812 gcc_cv_as_sparc_leon,,
3815 .register %g2, #scratch
3816 .register %g3, #scratch
3820 casa [[%g2]] 0xb, %g3, %g1],,
3821 [AC_DEFINE(HAVE_AS_LEON, 1,
3822 [Define if your assembler supports LEON instructions.])])
3826 i[34567]86-*-* | x86_64-*-*)
3830 # Full C++ conformance when using a shared libstdc++-v3 requires some
3831 # support from the Cygwin DLL, which in more recent versions exports
3832 # wrappers to aid in interposing and redirecting operators new, delete,
3833 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3834 # are configuring for a version of Cygwin that exports the wrappers.
3835 if test x$host = x$target && test x$host_cpu = xi686; then
3836 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3838 # Can't check presence of libc functions during cross-compile, so
3839 # we just have to assume we're building for an up-to-date target.
3840 gcc_ac_cygwin_dll_wrappers=yes
3842 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3843 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3844 [Define if you want to generate code by default that assumes that the
3845 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3848 cygwin* | pe | mingw32* | interix*)
3849 # Recent binutils allows the three-operand form of ".comm" on PE. This
3850 # definition is used unconditionally to initialise the default state of
3851 # the target option variable that governs usage of the feature.
3852 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3853 [2,19,52],,[.comm foo,1,32])
3854 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3855 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3856 [Define if your assembler supports specifying the alignment
3857 of objects allocated using the GAS .comm command.])
3858 # Used for DWARF 2 in PE
3859 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3860 gcc_cv_as_ix86_pe_secrel32,
3866 [if test x$gcc_cv_ld != x \
3867 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3868 gcc_cv_as_ix86_pe_secrel32=yes
3871 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3872 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3873 # Test if the assembler supports the extended form of the .section
3874 # directive that specifies section alignment. LTO support uses this,
3875 # but normally only after installation, so we warn but don't fail the
3876 # configure if LTO is enabled but the assembler does not support it.
3877 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3878 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3879 if test x$gcc_cv_as_section_has_align != xyes; then
3880 case ",$enable_languages," in
3882 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3889 # Test if the assembler supports the section flag 'e' for specifying
3890 # an excluded section.
3891 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3892 [2,22,51], [--fatal-warnings],
3895 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3896 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3897 [Define if your assembler supports specifying the section flag e.])
3899 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3900 gcc_cv_as_ix86_filds,,,
3901 [filds (%ebp); fists (%ebp)],,
3902 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3903 [Define if your assembler uses filds and fists mnemonics.])])
3905 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3906 gcc_cv_as_ix86_fildq,,,
3907 [fildq (%ebp); fistpq (%ebp)],,
3908 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3909 [Define if your assembler uses fildq and fistq mnemonics.])])
3911 gcc_GAS_CHECK_FEATURE([cmov syntax],
3912 gcc_cv_as_ix86_cmov_sun_syntax,,,
3913 [cmovl.l %edx, %eax],,
3914 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3915 [Define if your assembler supports the Sun syntax for cmov.])])
3917 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3918 gcc_cv_as_ix86_ffreep,,,
3920 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3921 [Define if your assembler supports the ffreep mnemonic.])])
3923 gcc_GAS_CHECK_FEATURE([.quad directive],
3924 gcc_cv_as_ix86_quad,,,
3926 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3927 [Define if your assembler supports the .quad directive.])])
3929 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3930 gcc_cv_as_ix86_sahf,,,
3933 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3934 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3936 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
3937 gcc_cv_as_ix86_interunit_movq,,,
3941 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
3942 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
3943 [Define if your assembler supports interunit movq mnemonic.])
3945 gcc_GAS_CHECK_FEATURE([hle prefixes],
3946 gcc_cv_as_ix86_hle,,,
3947 [lock xacquire cmpxchg %esi, (%ecx)],,
3948 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3949 [Define if your assembler supports HLE prefixes.])])
3951 gcc_GAS_CHECK_FEATURE([swap suffix],
3952 gcc_cv_as_ix86_swap,,,
3953 [movl.s %esp, %ebp],,
3954 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3955 [Define if your assembler supports the swap suffix.])])
3957 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3958 gcc_cv_as_ix86_diff_sect_delta,,,
3966 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3967 [Define if your assembler supports the subtraction of symbols in different sections.])])
3969 # These two are used unconditionally by i386.[ch]; it is to be defined
3970 # to 1 if the feature is present, 0 otherwise.
3971 as_ix86_gotoff_in_data_opt=
3972 if test x$gas = xyes; then
3973 as_ix86_gotoff_in_data_opt="--32"
3975 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3976 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
3977 [$as_ix86_gotoff_in_data_opt],
3983 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3984 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3985 [Define true if the assembler supports '.long foo@GOTOFF'.])
3987 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3988 gcc_cv_as_ix86_rep_lock_prefix,,,
3994 lock addl %edi, (%eax,%esi)
3995 lock orl $0, (%esp)],,
3996 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3997 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3999 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4000 gcc_cv_as_ix86_ud2,,,
4002 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4003 [Define if your assembler supports the 'ud2' mnemonic.])])
4005 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4006 gcc_cv_as_ix86_tlsgdplt,,,
4007 [call tls_gd@tlsgdplt],
4008 [if test x$gcc_cv_ld != x \
4009 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4010 gcc_cv_as_ix86_tlsgdplt=yes
4013 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4014 [Define if your assembler and linker support @tlsgdplt.])])
4017 .section .tdata,"aw'$tls_section_flag'",@progbits
4019 .section .text,"ax",@progbits
4020 call tls_ld@tlsldmplt'
4021 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4022 gcc_cv_as_ix86_tlsldmplt,,,
4024 [if test x$gcc_cv_ld != x \
4025 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4026 gcc_cv_as_ix86_tlsldmplt=yes
4029 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4030 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4031 [Define to 1 if your assembler and linker support @tlsldmplt.])
4033 # Enforce 32-bit output with gas and gld.
4034 if test x$gas = xyes; then
4035 as_ix86_tls_ldm_opt="--32"
4037 if echo "$ld_ver" | grep GNU > /dev/null; then
4038 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4039 ld_ix86_tls_ldm_opt="-melf_i386_sol2"
4041 ld_ix86_tls_ldm_opt="-melf_i386"
4045 .section .text,"ax",@progbits
4047 .type _start, @function
4049 leal value@tlsldm(%ebx), %eax
4050 call ___tls_get_addr@plt
4052 .section .tdata,"aw'$tls_section_flag'",@progbits
4053 .type value, @object
4055 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4056 gcc_cv_as_ix86_tlsldm,,
4057 [$as_ix86_tls_ldm_opt],
4059 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4060 && $gcc_cv_ld $ld_ix86_tls_ldm_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4061 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4062 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4063 gcc_cv_as_ix86_tlsldm=yes
4067 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4068 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4069 [Define to 1 if your assembler and linker support @tlsldm.])
4074 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4075 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4077 addl r15 = @ltoffx(x#), gp
4079 ld8.mov r16 = [[r15]], x#],,
4080 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4081 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4087 *-*-aix*) conftest_s=' .machine "pwr5"
4091 gcc_GAS_CHECK_FEATURE([.machine directive support],
4092 gcc_cv_as_machine_directive,,,
4093 [ .machine ppc7400])
4094 if test x$gcc_cv_as_machine_directive != xyes; then
4095 echo "*** This target requires an assembler supporting \".machine\"" >&2
4096 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4097 test x$build = x$target && exit 1
4101 *) conftest_s=' .machine power4
4106 gcc_GAS_CHECK_FEATURE([mfcr field support],
4107 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4109 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4110 [Define if your assembler supports mfcr field.])])
4113 *-*-aix*) conftest_s=' .machine "pwr5"
4116 *) conftest_s=' .machine power5
4121 gcc_GAS_CHECK_FEATURE([popcntb support],
4122 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4124 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4125 [Define if your assembler supports popcntb field.])])
4128 *-*-aix*) conftest_s=' .machine "pwr5x"
4131 *) conftest_s=' .machine power5
4136 gcc_GAS_CHECK_FEATURE([fp round support],
4137 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4139 [AC_DEFINE(HAVE_AS_FPRND, 1,
4140 [Define if your assembler supports fprnd.])])
4143 *-*-aix*) conftest_s=' .machine "pwr6"
4146 *) conftest_s=' .machine power6
4151 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4152 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4154 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4155 [Define if your assembler supports mffgpr and mftgpr.])])
4158 *-*-aix*) conftest_s=' .csect .text[[PR]]
4160 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4164 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4165 *) conftest_s=' .text
4167 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4170 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4171 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4173 [AC_DEFINE(HAVE_AS_REL16, 1,
4174 [Define if your assembler supports R_PPC_REL16 relocs.])])
4177 *-*-aix*) conftest_s=' .machine "pwr6"
4180 *) conftest_s=' .machine power6
4185 gcc_GAS_CHECK_FEATURE([compare bytes support],
4186 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4188 [AC_DEFINE(HAVE_AS_CMPB, 1,
4189 [Define if your assembler supports cmpb.])])
4192 *-*-aix*) conftest_s=' .machine "pwr6"
4195 *) conftest_s=' .machine power6
4200 gcc_GAS_CHECK_FEATURE([decimal float support],
4201 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4203 [AC_DEFINE(HAVE_AS_DFP, 1,
4204 [Define if your assembler supports DFP instructions.])])
4207 *-*-aix*) conftest_s=' .machine "pwr7"
4210 *) conftest_s=' .machine power7
4215 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4216 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4218 [AC_DEFINE(HAVE_AS_VSX, 1,
4219 [Define if your assembler supports VSX instructions.])])
4222 *-*-aix*) conftest_s=' .machine "pwr7"
4225 *) conftest_s=' .machine power7
4230 gcc_GAS_CHECK_FEATURE([popcntd support],
4231 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4233 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4234 [Define if your assembler supports POPCNTD instructions.])])
4237 *-*-aix*) conftest_s=' .machine "pwr8"
4238 .csect .text[[PR]]';;
4239 *) conftest_s=' .machine power8
4243 gcc_GAS_CHECK_FEATURE([power8 support],
4244 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4246 [AC_DEFINE(HAVE_AS_POWER8, 1,
4247 [Define if your assembler supports POWER8 instructions.])])
4250 *-*-aix*) conftest_s=' .csect .text[[PR]]
4252 *) conftest_s=' .text
4256 gcc_GAS_CHECK_FEATURE([lwsync support],
4257 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4259 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4260 [Define if your assembler supports LWSYNC instructions.])])
4263 *-*-aix*) conftest_s=' .machine "476"
4266 *) conftest_s=' .machine "476"
4271 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4272 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4274 [AC_DEFINE(HAVE_AS_DCI, 1,
4275 [Define if your assembler supports the DCI/ICI instructions.])])
4277 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4278 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4279 [.gnu_attribute 4,1],,
4280 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4281 [Define if your assembler supports .gnu_attribute.])])
4283 gcc_GAS_CHECK_FEATURE([tls marker support],
4284 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4285 [ bl __tls_get_addr(x@tlsgd)],,
4286 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4287 [Define if your assembler supports arg info for __tls_get_addr.])])
4291 gcc_GAS_CHECK_FEATURE([.ref support],
4292 gcc_cv_as_aix_ref, [2,21,0],,
4293 [ .csect stuff[[rw]]
4299 [AC_DEFINE(HAVE_AS_REF, 1,
4300 [Define if your assembler supports .ref])])
4306 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4307 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4308 [ lw $4,%gp_rel(foo)($4)],,
4309 [if test x$target_cpu_default = x
4310 then target_cpu_default=MASK_EXPLICIT_RELOCS
4311 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4313 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4314 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4315 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4316 [Define if the assembler understands -mno-shared.])])
4318 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4319 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4320 [.gnu_attribute 4,1],,
4321 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4322 [Define if your assembler supports .gnu_attribute.])])
4324 gcc_GAS_CHECK_FEATURE([.module support],
4325 gcc_cv_as_mips_dot_module,,[-32],
4328 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4329 [Define if your assembler supports .module.])])
4330 if test x$gcc_cv_as_mips_dot_module = xno \
4331 && test x$with_fp_32 != x; then
4333 [Requesting --with-fp-32= requires assembler support for .module.])
4336 gcc_GAS_CHECK_FEATURE([.micromips support],
4337 gcc_cv_as_micromips_support,,[--fatal-warnings],
4339 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4340 [Define if your assembler supports the .set micromips directive])])
4342 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4343 gcc_cv_as_mips_dtprelword, [2,18,0],,
4344 [.section .tdata,"awT",@progbits
4348 .dtprelword x+0x8000],,
4349 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4350 [Define if your assembler supports .dtprelword.])])
4352 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4353 gcc_cv_as_mips_dspr1_mult,,,
4363 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4364 [Define if your assembler supports DSPR1 mult.])])
4366 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4367 gcc_cv_as_ld_jalr_reloc=no
4368 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4369 if test $in_tree_ld = yes ; then
4370 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4371 && test $in_tree_ld_is_elf = yes; then
4372 gcc_cv_as_ld_jalr_reloc=yes
4374 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4375 echo ' .ent x' > conftest.s
4376 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4377 echo ' lw $25,%call16(y)($28)' >> conftest.s
4378 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4379 echo '1: jalr $25' >> conftest.s
4380 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4381 echo '1: jalr $25' >> conftest.s
4382 echo ' .end x' >> conftest.s
4383 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4384 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4385 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4386 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4387 gcc_cv_as_ld_jalr_reloc=yes
4393 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4394 if test x$target_cpu_default = x; then
4395 target_cpu_default=MASK_RELAX_PIC_CALLS
4397 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4400 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4402 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4403 [gcc_cv_ld_mips_personality_relaxation],
4404 [gcc_cv_ld_mips_personality_relaxation=no
4405 if test $in_tree_ld = yes ; then
4406 if test "$gcc_cv_gld_major_version" -eq 2 \
4407 -a "$gcc_cv_gld_minor_version" -ge 21 \
4408 -o "$gcc_cv_gld_major_version" -gt 2; then
4409 gcc_cv_ld_mips_personality_relaxation=yes
4411 elif test x$gcc_cv_as != x \
4412 -a x$gcc_cv_ld != x \
4413 -a x$gcc_cv_readelf != x ; then
4414 cat > conftest.s <<EOF
4416 .cfi_personality 0x80,indirect_ptr
4423 .section .data,"aw",@progbits
4427 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4428 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4429 if $gcc_cv_readelf -d conftest 2>&1 \
4430 | grep TEXTREL > /dev/null 2>&1; then
4432 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4433 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4436 gcc_cv_ld_mips_personality_relaxation=yes
4440 rm -f conftest.s conftest.o conftest])
4441 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4442 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4443 [Define if your linker can relax absolute .eh_frame personality
4444 pointers into PC-relative form.])
4447 gcc_GAS_CHECK_FEATURE([-mnan= support],
4448 gcc_cv_as_mips_nan,,
4450 [AC_DEFINE(HAVE_AS_NAN, 1,
4451 [Define if the assembler understands -mnan=.])])
4452 if test x$gcc_cv_as_mips_nan = xno \
4453 && test x$with_nan != x; then
4455 [Requesting --with-nan= requires assembler support for -mnan=])
4459 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4460 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4461 [.gnu_attribute 8,1],,
4462 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4463 [Define if your assembler supports .gnu_attribute.])])
4467 # Mips and HP-UX need the GNU assembler.
4468 # Linux on IA64 might be able to use the Intel assembler.
4471 mips*-*-* | *-*-hpux* )
4472 if test x$gas_flag = xyes \
4473 || test x"$host" != x"$build" \
4474 || test ! -x "$gcc_cv_as" \
4475 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4478 echo "*** This configuration requires the GNU assembler" >&2
4484 # ??? Not all targets support dwarf2 debug_line, even within a version
4485 # of gas. Moreover, we need to emit a valid instruction to trigger any
4486 # info to the output file. So, as supported targets are added to gas 2.11,
4487 # add some instruction here to (also) show we expect this might work.
4488 # ??? Once 2.11 is released, probably need to add first known working
4489 # version to the per-target configury.
4491 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4492 | mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
4493 | visium | xstormy16 | xtensa)
4503 if test x"$insn" != x; then
4505 .file 1 \"conftest.s\"
4508 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4509 gcc_cv_as_dwarf2_debug_line,
4510 [elf,2,11,0],, [$conftest_s],
4511 [if test x$gcc_cv_objdump != x \
4512 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4513 | grep debug_line > /dev/null 2>&1; then
4514 gcc_cv_as_dwarf2_debug_line=yes
4517 # The .debug_line file table must be in the exact order that
4518 # we specified the files, since these indices are also used
4519 # by DW_AT_decl_file. Approximate this test by testing if
4520 # the assembler bitches if the same index is assigned twice.
4521 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4522 gcc_cv_as_dwarf2_file_buggy,,,
4526 if test $gcc_cv_as_dwarf2_debug_line = yes \
4527 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4528 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4529 [Define if your assembler supports dwarf2 .file/.loc directives,
4530 and preserves file table indices exactly as given.])
4533 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4534 gcc_cv_as_gdwarf2_flag,
4535 [elf,2,11,0], [--gdwarf2], [$insn],,
4536 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4537 [Define if your assembler supports the --gdwarf2 option.])])
4539 gcc_GAS_CHECK_FEATURE([--gstabs option],
4540 gcc_cv_as_gstabs_flag,
4541 [elf,2,11,0], [--gstabs], [$insn],,
4542 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4543 [Define if your assembler supports the --gstabs option.])])
4545 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4546 gcc_cv_as_debug_prefix_map_flag,
4547 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4548 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4549 [Define if your assembler supports the --debug-prefix-map option.])])
4552 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4553 gcc_cv_as_compress_debug,,[--compress-debug-sections],,
4554 [# gas compiled without zlib cannot compress debug sections and warns
4555 # about it, but still exits successfully. So check for this, too.
4556 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4558 gcc_cv_as_compress_debug=0
4559 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4561 gcc_cv_as_compress_debug=1
4562 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4563 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4565 gcc_cv_as_compress_debug=0
4566 # FIXME: Future gas versions will support ELF gABI style via
4567 # --compress-debug-sections[=type].
4569 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4570 [Define to the level of your assembler's compressed debug section support.])
4571 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4572 [Define to the assembler option to enable compressed debug sections.])
4573 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4574 [Define to the assembler option to disable compressed debug sections.])
4576 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4579 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4580 [Define if your assembler supports .lcomm with an alignment field.])])
4582 if test x$with_sysroot = x && test x$host = x$target \
4583 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4584 && test "$prefix" != "NONE"; then
4585 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4586 [Define to PREFIX/include if cpp should also search that directory.])
4589 # Determine the version of glibc, if any, used on the target.
4590 AC_MSG_CHECKING([for target glibc version])
4591 AC_ARG_WITH([glibc-version],
4592 [AS_HELP_STRING([--with-glibc-version=M.N],
4593 [assume GCC used with glibc version M.N or later])], [
4594 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4595 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4596 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4598 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4600 glibc_version_major=0
4601 glibc_version_minor=0
4602 [if test -f $target_header_dir/features.h \
4603 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4604 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4605 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4606 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4608 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4609 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
4610 [GNU C Library major version number used on the target, or 0.])
4611 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
4612 [GNU C Library minor version number used on the target, or 0.])
4614 AC_ARG_ENABLE(gnu-unique-object,
4615 [AS_HELP_STRING([--enable-gnu-unique-object],
4616 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4617 [case $enable_gnu_unique_object in
4619 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4620 Valid choices are 'yes' and 'no'.]) ;;
4622 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4624 [.type foo, '$target_type_format_char'gnu_unique_object],,
4625 # We need to unquote above to to use the definition from config.gcc.
4626 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4627 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4629 if test x$enable_gnu_unique_object = xyes; then
4630 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4631 [Define if your assembler supports @gnu_unique_object.])
4634 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4635 [gcc_cv_as_line_zero],
4636 [gcc_cv_as_line_zero=no
4637 if test $in_tree_gas = yes; then
4638 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4639 elif test "x$gcc_cv_as" != x; then
4640 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4641 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4642 test "x`cat conftest.out`" = x
4644 gcc_cv_as_line_zero=yes
4646 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4647 cat conftest.s >&AS_MESSAGE_LOG_FD
4648 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4649 cat conftest.out >&AS_MESSAGE_LOG_FD
4651 rm -f conftest.o conftest.s conftest.out
4653 if test "x$gcc_cv_as_line_zero" = xyes; then
4654 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4655 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4658 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4659 gcc_cv_ld_eh_frame_hdr=no
4660 if test $in_tree_ld = yes ; then
4661 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4662 && test $in_tree_ld_is_elf = yes; then
4663 gcc_cv_ld_eh_frame_hdr=yes
4665 elif test x$gcc_cv_ld != x; then
4666 if echo "$ld_ver" | grep GNU > /dev/null; then
4667 # Check if linker supports --eh-frame-hdr option
4668 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4669 gcc_cv_ld_eh_frame_hdr=yes
4674 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4675 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4676 gcc_cv_ld_eh_frame_hdr=yes
4682 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4683 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4684 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4685 [Define if your linker supports .eh_frame_hdr.])
4687 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4689 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4690 gcc_cv_ld_eh_frame_ciev3=no
4691 if test $in_tree_ld = yes ; then
4692 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4693 && test $in_tree_ld_is_elf = yes; then
4694 gcc_cv_ld_eh_frame_ciev3=yes
4696 elif test x$gcc_cv_ld != x; then
4697 if echo "$ld_ver" | grep GNU > /dev/null; then
4698 gcc_cv_ld_eh_frame_ciev3=yes
4699 if test 0"$ld_date" -lt 20040513; then
4700 if test -n "$ld_date"; then
4701 # If there was date string, but was earlier than 2004-05-13, fail
4702 gcc_cv_ld_eh_frame_ciev3=no
4703 elif test "$ld_vers_major" -lt 2; then
4704 gcc_cv_ld_eh_frame_ciev3=no
4705 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4706 gcc_cv_ld_eh_frame_ciev3=no
4712 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4713 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4714 gcc_cv_ld_eh_frame_ciev3=yes
4720 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4721 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4722 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4723 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4725 AC_MSG_CHECKING(linker position independent executable support)
4727 if test $in_tree_ld = yes ; then
4728 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4729 && test $in_tree_ld_is_elf = yes; then
4732 elif test x$gcc_cv_ld != x; then
4733 # Check if linker supports -pie option
4734 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4738 if test x"$gcc_cv_ld_pie" = xyes; then
4739 AC_DEFINE(HAVE_LD_PIE, 1,
4740 [Define if your linker supports -pie option.])
4742 AC_MSG_RESULT($gcc_cv_ld_pie)
4744 AC_MSG_CHECKING(linker PIE support with copy reloc)
4745 gcc_cv_ld_pie_copyreloc=no
4746 if test $gcc_cv_ld_pie = yes ; then
4747 if test $in_tree_ld = yes ; then
4748 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
4749 gcc_cv_ld_pie_copyreloc=yes
4751 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4752 # Check if linker supports -pie option with copy reloc
4754 i?86-*-linux* | x86_64-*-linux*)
4755 cat > conftest1.s <<EOF
4758 .type a_glob, @object
4763 cat > conftest2.s <<EOF
4766 .type main, @function
4768 movl %eax, a_glob(%rip)
4771 .section .data.rel,"aw",@progbits
4776 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4777 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
4778 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4779 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
4780 gcc_cv_ld_pie_copyreloc=yes
4782 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
4787 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
4788 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
4789 [Define 0/1 if your linker supports -pie option with copy reloc.])
4790 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
4792 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4793 gcc_cv_ld_eh_gc_sections=no
4794 if test $in_tree_ld = yes ; then
4795 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4796 && test $in_tree_ld_is_elf = yes; then
4797 gcc_cv_ld_eh_gc_sections=yes
4799 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4800 cat > conftest.s <<EOF
4803 .type _start, @function
4806 .size _start, .-_start
4807 .section .text.foo,"ax",@progbits
4808 .type foo, @function
4812 .section .gcc_except_table.foo,"a",@progbits
4815 .section .eh_frame,"a",@progbits
4818 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4819 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4820 | grep "gc-sections option ignored" > /dev/null; then
4821 gcc_cv_ld_eh_gc_sections=no
4822 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4823 | grep gcc_except_table > /dev/null; then
4824 gcc_cv_ld_eh_gc_sections=yes
4825 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4826 if test x$gcc_cv_as_comdat_group != xyes; then
4827 gcc_cv_ld_eh_gc_sections=no
4828 cat > conftest.s <<EOF
4831 .type _start, @function
4834 .size _start, .-_start
4835 .section .gnu.linkonce.t.foo,"ax",@progbits
4836 .type foo, @function
4840 .section .gcc_except_table.foo,"a",@progbits
4843 .section .eh_frame,"a",@progbits
4846 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4847 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4848 | grep "gc-sections option ignored" > /dev/null; then
4849 gcc_cv_ld_eh_gc_sections=no
4850 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4851 | grep gcc_except_table > /dev/null; then
4852 gcc_cv_ld_eh_gc_sections=yes
4858 rm -f conftest.s conftest.o conftest
4862 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4863 gcc_cv_ld_eh_gc_sections=no
4866 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4867 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4868 [Define if your linker supports garbage collection of
4869 sections in presence of EH frames.])
4871 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4873 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4874 gcc_cv_ld_eh_gc_sections_bug=no
4875 if test $in_tree_ld = yes ; then
4876 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4877 && test $in_tree_ld_is_elf = yes; then
4878 gcc_cv_ld_eh_gc_sections_bug=yes
4880 elif test x$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
4881 gcc_cv_ld_eh_gc_sections_bug=yes
4882 cat > conftest.s <<EOF
4885 .type _start, @function
4888 .size _start, .-_start
4889 .section .text.startup.foo,"ax",@progbits
4890 .type foo, @function
4894 .section .gcc_except_table.foo,"a",@progbits
4897 .section .eh_frame,"a",@progbits
4900 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4901 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4902 | grep "gc-sections option ignored" > /dev/null; then
4904 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4905 | grep gcc_except_table > /dev/null; then
4906 gcc_cv_ld_eh_gc_sections_bug=no
4909 rm -f conftest.s conftest.o conftest
4911 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4912 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4913 [Define if your linker has buggy garbage collection of
4914 sections support when .text.startup.foo like sections are used.])
4916 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4918 AC_MSG_CHECKING(linker for compressed debug sections)
4919 # gold/gld support compressed debug sections since binutils 2.19/2.21
4920 if test $in_tree_ld = yes ; then
4921 gcc_cv_ld_compress_debug=0
4922 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
4923 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
4924 gcc_cv_ld_compress_debug=2
4925 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
4926 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
4927 && test $in_tree_ld_is_elf = yes; then
4928 gcc_cv_ld_compress_debug=1
4930 elif echo "$ld_ver" | grep GNU > /dev/null; then
4931 gcc_cv_ld_compress_debug=1
4932 if test 0"$ld_date" -lt 20050308; then
4933 if test -n "$ld_date"; then
4934 # If there was date string, but was earlier than 2005-03-08, fail
4935 gcc_cv_ld_compress_debug=0
4936 elif test "$ld_vers_major" -lt 2; then
4937 gcc_cv_ld_compress_debug=0
4938 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
4939 gcc_cv_ld_compress_debug=0
4942 if test $ld_is_gold = yes; then
4943 gcc_cv_ld_compress_debug=2
4944 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
4950 # Introduced in Solaris 11.2.
4951 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
4952 gcc_cv_ld_compress_debug=3
4953 gcc_cv_ld_compress_debug_option="-z compress-sections"
4955 gcc_cv_ld_compress_debug=0
4959 # Assume linkers other than GNU ld don't support compessed debug
4961 gcc_cv_ld_compress_debug=0
4966 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
4967 [Define to the level of your linker's compressed debug section support.])
4968 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
4969 [Define to the linker option to enable compressed debug sections.])
4970 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
4976 AC_CACHE_CHECK(linker --as-needed support,
4977 gcc_cv_ld_as_needed,
4978 [gcc_cv_ld_as_needed=no
4979 gcc_cv_ld_as_needed_option='--as-needed'
4980 gcc_cv_ld_no_as_needed_option='--no-as-needed'
4981 if test $in_tree_ld = yes ; then
4982 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4983 && test $in_tree_ld_is_elf = yes; then
4984 gcc_cv_ld_as_needed=yes
4986 elif test x$gcc_cv_ld != x; then
4987 # Check if linker supports --as-needed and --no-as-needed options
4988 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4989 gcc_cv_ld_as_needed=yes
4992 # Solaris 2 ld always supports -z ignore/-z record.
4994 gcc_cv_ld_as_needed=yes
4995 gcc_cv_ld_as_needed_option="-z ignore"
4996 gcc_cv_ld_no_as_needed_option="-z record"
5001 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5002 # dl_iterate_phdr, i.e. since Solaris 11.
5004 *-*-solaris2.1[[1-9]]*)
5006 i?86-*-* | x86_64-*-*)
5007 if echo "$ld_ver" | grep GNU > /dev/null; then
5008 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5009 gcc_cv_ld_as_needed=no
5015 gcc_cv_ld_as_needed=no
5019 if test x"$gcc_cv_ld_as_needed" = xyes; then
5020 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5021 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5022 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5023 [Define to the linker option to ignore unused dependencies.])
5024 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5025 [Define to the linker option to keep unused dependencies.])
5028 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5029 saved_LDFLAGS="$LDFLAGS"
5030 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5031 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5032 AC_LINK_IFELSE([int main(void) {return 0;}],
5033 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5035 LDFLAGS="$saved_LDFLAGS"
5036 if test "x$gcc_cv_ld_clearcap" = xyes; then
5037 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5038 [Define if the linker supports clearing hardware capabilities via mapfile.])
5039 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5041 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5043 case "$target:$tm_file" in
5044 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5047 emul_name="-melf64lppc"
5050 emul_name="-melf64ppc"
5053 emul_name="-melf64ppc_fbsd"
5056 AC_CACHE_CHECK(linker support for omitting dot symbols,
5057 gcc_cv_ld_no_dot_syms,
5058 [gcc_cv_ld_no_dot_syms=no
5059 if test x"$ld_is_gold" = xyes; then
5060 gcc_cv_ld_no_dot_syms=yes
5061 elif test $in_tree_ld = yes ; then
5062 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5063 gcc_cv_ld_no_dot_syms=yes
5065 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5066 cat > conftest1.s <<EOF
5070 cat > conftest2.s <<EOF
5071 .section ".opd","aw"
5076 .quad .LEfoo,.TOC.@tocbase,0
5082 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5083 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5084 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5085 gcc_cv_ld_no_dot_syms=yes
5087 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5090 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5091 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5092 [Define if your PowerPC64 linker only needs function descriptor syms.])
5095 AC_CACHE_CHECK(linker large toc support,
5096 gcc_cv_ld_large_toc,
5097 [gcc_cv_ld_large_toc=no
5098 if test x"$ld_is_gold" = xyes; then
5099 gcc_cv_ld_large_toc=yes
5100 elif test $in_tree_ld = yes ; then
5101 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5102 gcc_cv_ld_large_toc=yes
5104 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5105 cat > conftest.s <<EOF
5106 .section ".tbss","awT",@nobits
5112 addis 9,13,ie0@got@tprel@ha
5113 ld 9,ie0@got@tprel@l(9)
5115 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5116 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5117 gcc_cv_ld_large_toc=yes
5119 rm -f conftest conftest.o conftest.s
5122 if test x"$gcc_cv_ld_large_toc" = xyes; then
5123 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5124 [Define if your PowerPC64 linker supports a large TOC.])
5127 AC_CACHE_CHECK(linker toc pointer alignment,
5128 gcc_cv_ld_toc_align,
5129 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5130 cat > conftest.s <<EOF
5135 .section .data.rel.ro,"aw",@progbits
5140 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5141 && $gcc_cv_ld $emul_name -o conftest conftest.o > /dev/null 2>&1; then
5142 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5144 rm -f conftest conftest.o conftest.s
5147 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5148 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5149 [Define to .TOC. alignment forced by your linker.])
5156 AC_CACHE_CHECK(linker large toc support,
5157 gcc_cv_ld_large_toc,
5158 [gcc_cv_ld_large_toc=no
5159 if test x$gcc_cv_as != x ; then
5160 cat > conftest.s <<EOF
5170 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5171 gcc_cv_ld_large_toc=yes
5173 rm -f conftest conftest.o conftest.s
5176 if test x"$gcc_cv_ld_large_toc" = xyes; then
5177 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5178 [Define if your PowerPC64 linker supports a large TOC.])
5183 AC_CACHE_CHECK(linker --build-id support,
5185 [gcc_cv_ld_buildid=no
5186 if test $in_tree_ld = yes ; then
5187 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5188 "$gcc_cv_gld_minor_version" -ge 18 -o \
5189 "$gcc_cv_gld_major_version" -gt 2 \
5190 && test $in_tree_ld_is_elf = yes; then
5191 gcc_cv_ld_buildid=yes
5193 elif test x$gcc_cv_ld != x; then
5194 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
5195 gcc_cv_ld_buildid=yes
5198 if test x"$gcc_cv_ld_buildid" = xyes; then
5199 AC_DEFINE(HAVE_LD_BUILDID, 1,
5200 [Define if your linker supports --build-id.])
5203 AC_ARG_ENABLE(linker-build-id,
5204 [AS_HELP_STRING([--enable-linker-build-id],
5205 [compiler will always pass --build-id to linker])],
5207 enable_linker_build_id=no)
5209 if test x"$enable_linker_build_id" = xyes; then
5210 if test x"$gcc_cv_ld_buildid" = xyes; then
5211 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5212 [Define if gcc should always pass --build-id to linker.])
5214 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5218 # In binutils 2.21, GNU ld gained support for new emulations fully
5219 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5220 AC_CACHE_CHECK(linker *_sol2 emulation support,
5221 gcc_cv_ld_sol2_emulation,
5222 [gcc_cv_ld_sol2_emulation=no
5223 if test $in_tree_ld = yes ; then
5224 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5225 "$gcc_cv_gld_minor_version" -ge 21 -o \
5226 "$gcc_cv_gld_major_version" -gt 2 \
5227 && test $in_tree_ld_is_elf = yes; then
5228 gcc_cv_ld_sol2_emulation=yes
5230 elif test x$gcc_cv_ld != x; then
5231 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5232 grep _sol2 > /dev/null; then
5233 gcc_cv_ld_sol2_emulation=yes
5236 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5237 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5238 [Define if your linker supports the *_sol2 emulations.])
5241 AC_CACHE_CHECK(linker --sysroot support,
5243 [gcc_cv_ld_sysroot=no
5244 if test $in_tree_ld = yes ; then
5245 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5246 gcc_cv_ld_sysroot=yes
5248 elif test x$gcc_cv_ld != x; then
5249 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
5250 gcc_cv_ld_sysroot=yes
5253 if test x"$gcc_cv_ld_sysroot" = xyes; then
5254 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5255 [Define if your linker supports --sysroot.])
5258 # Test for stack protector support in target C library.
5259 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5260 gcc_cv_libc_provides_ssp,
5261 [gcc_cv_libc_provides_ssp=no
5264 # All versions of musl provide stack protector
5265 gcc_cv_libc_provides_ssp=yes;;
5266 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
5267 # glibc 2.4 and later provides __stack_chk_fail and
5268 # either __stack_chk_guard, or TLS access to stack guard canary.
5269 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5270 [if test -f $target_header_dir/features.h \
5271 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5272 $target_header_dir/features.h > /dev/null; then
5273 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5274 $target_header_dir/features.h > /dev/null && \
5275 test -f $target_header_dir/bits/uClibc_config.h && \
5276 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5277 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5278 gcc_cv_libc_provides_ssp=yes
5280 # all versions of Bionic support stack protector
5281 elif test -f $target_header_dir/sys/cdefs.h \
5282 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5283 $target_header_dir/sys/cdefs.h > /dev/null; then
5284 gcc_cv_libc_provides_ssp=yes
5288 # Avoid complicated tests (see
5289 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5290 # simply assert that glibc does provide this, which is true for all
5291 # realistically usable GNU/Hurd configurations.
5292 # All supported versions of musl provide it as well
5293 gcc_cv_libc_provides_ssp=yes;;
5294 *-*-darwin* | *-*-freebsd*)
5295 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5296 [echo "no __stack_chk_fail on this target"])
5298 *) gcc_cv_libc_provides_ssp=no ;;
5301 if test x$gcc_cv_libc_provides_ssp = xyes; then
5302 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5303 [Define if your target C library provides stack protector support])
5306 # Test for <sys/sdt.h> on the target.
5307 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5308 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5310 if test -f $target_header_dir/sys/sdt.h; then
5312 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5313 [Define if your target C library provides sys/sdt.h])
5315 AC_MSG_RESULT($have_sys_sdt_h)
5317 # Check if TFmode long double should be used by default or not.
5318 # Some glibc targets used DFmode long double, but with glibc 2.4
5319 # and later they can use TFmode.
5321 powerpc*-*-linux* | \
5325 AC_ARG_WITH(long-double-128,
5326 [AS_HELP_STRING([--with-long-double-128],
5327 [use 128-bit long double by default])],
5328 gcc_cv_target_ldbl128="$with_long_double_128",
5329 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5330 [gcc_cv_target_ldbl128=no
5331 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5332 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5333 && gcc_cv_target_ldbl128=yes
5337 if test x$gcc_cv_target_ldbl128 = xyes; then
5338 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5339 [Define if TFmode long double should be the default])
5342 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5343 gcc_cv_target_dl_iterate_phdr=unknown
5345 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5346 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5347 # libdl there, both complicating its use and breaking compatibility
5348 # between Solaris 10 updates.
5349 *-*-solaris2.1[[1-9]]*)
5350 # <link.h> needs both a dl_iterate_phdr declaration and support for
5351 # compilation with largefile support.
5352 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5353 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5354 gcc_cv_target_dl_iterate_phdr=yes
5356 gcc_cv_target_dl_iterate_phdr=no
5359 *-*-dragonfly* | *-*-freebsd*)
5360 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5361 gcc_cv_target_dl_iterate_phdr=yes
5363 gcc_cv_target_dl_iterate_phdr=no
5367 gcc_cv_target_dl_iterate_phdr=yes
5370 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5371 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5372 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5373 [Define if your target C library provides the `dl_iterate_phdr' function.])
5375 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5377 # We no longer support different GC mechanisms. Emit an error if
5378 # the user configures with --with-gc.
5380 [AS_HELP_STRING([--with-gc={page,zone}],
5381 [this option is not supported anymore. It used to choose
5382 the garbage collection mechanism to use with the compiler])],
5383 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5386 # Libraries to use on the host. This will normally be set by the top
5387 # level Makefile. Here we simply capture the value for our Makefile.
5388 if test -z "${HOST_LIBS+set}"; then
5393 # Use the system's zlib library.
5396 dnl Very limited version of automake's enable-maintainer-mode
5398 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5399 dnl maintainer-mode is disabled by default
5400 AC_ARG_ENABLE(maintainer-mode,
5401 [AS_HELP_STRING([--enable-maintainer-mode],
5402 [enable make rules and dependencies not useful
5403 (and sometimes confusing) to the casual installer])],
5404 maintainer_mode=$enableval,
5407 AC_MSG_RESULT($maintainer_mode)
5409 if test "$maintainer_mode" = "yes"; then
5416 dnl Whether to prevent multiple front-ends from linking at the same time
5418 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5419 AC_ARG_ENABLE(link-mutex,
5420 [AS_HELP_STRING([--enable-link-mutex],
5421 [avoid linking multiple front-ends at once to avoid thrashing
5422 on the build machine])],
5423 do_link_mutex=$enableval,
5425 AC_MSG_RESULT($do_link_mutex)
5427 if test "$do_link_mutex" = "yes"; then
5432 AC_SUBST(DO_LINK_MUTEX)
5438 # Make empty files to contain the specs and options for each language.
5439 # Then add #include lines to for a compiler that has specs and/or options.
5445 # These (without "all_") are set in each config-lang.in.
5446 # `language' must be a single word so is spelled singularly.
5449 all_outputs='Makefile'
5450 # List of language makefile fragments.
5452 # Additional files for gengtype
5453 all_gtfiles="$target_gtfiles"
5455 # These are the languages that are set in --enable-languages,
5456 # and are available in the GCC tree.
5457 all_selected_languages=
5459 # Add the language fragments.
5460 # Languages are added via two mechanisms. Some information must be
5461 # recorded in makefile variables, these are defined in config-lang.in.
5462 # We accumulate them and plug them into the main Makefile.
5463 # The other mechanism is a set of hooks for each of the main targets
5464 # like `clean', `install', etc.
5466 language_hooks="Make-hooks"
5468 for lang in ${srcdir}/*/config-lang.in
5471 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5473 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5474 if test "x$lang_alias" = x
5476 echo "$lang doesn't set \$language." 1>&2
5479 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5480 subdirs="$subdirs $subdir"
5482 # $gcc_subdir is where the gcc integration files are to be found
5483 # for a language, both for internal compiler purposes (compiler
5484 # sources implementing front-end to GCC tree converters), and for
5485 # build infrastructure purposes (Make-lang.in, etc.)
5487 # This will be <subdir> (relative to $srcdir) if a line like
5488 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5489 # is found in <langdir>/config-lang.in, and will remain <langdir>
5492 # Except for the language alias (fetched above), the regular
5493 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5494 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5495 # only this and the language alias.
5497 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5498 if [ "$gcc_subdir" = "" ]; then
5499 gcc_subdir="$subdir"
5502 case ",$enable_languages," in
5504 all_selected_languages="$all_selected_languages $lang_alias"
5505 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5506 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5518 . ${srcdir}/$gcc_subdir/config-lang.in
5519 if test "x$language" = x
5521 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5526 case ",$enable_languages," in
5529 for i in $subdir_requires; do
5530 test -f "${srcdir}/$i/config-lang.in" && continue
5538 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5539 if test -f $srcdir/$gcc_subdir/lang.opt; then
5540 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5541 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5543 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5544 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5546 all_languages="$all_languages $language"
5547 all_compilers="$all_compilers $compilers"
5548 all_outputs="$all_outputs $outputs"
5549 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5550 case ",$enable_languages," in
5552 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5554 AC_SUBST(enable_lto)
5561 for language in $all_selected_languages
5563 check_languages="$check_languages check-$language"
5566 # We link each language in with a set of hooks, reached indirectly via
5567 # lang.${target}. Only do so for selected languages.
5571 target_list="all.cross start.encap rest.encap tags \
5572 install-common install-man install-info install-pdf install-html dvi \
5573 pdf html uninstall info man srcextra srcman srcinfo \
5574 mostlyclean clean distclean maintainer-clean install-plugin"
5576 for t in $target_list
5579 for lang in $all_selected_languages
5583 echo "lang.$t: $x" >> Make-hooks
5587 # Option include files
5590 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5591 option_includes="option-includes.mk"
5592 AC_SUBST_FILE(option_includes)
5600 echo "dir ." > .gdbinit
5601 echo "dir ${srcdir}" >> .gdbinit
5602 if test x$gdb_needs_out_file_path = xyes
5604 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5606 if test "x$subdirs" != x; then
5609 echo "dir ${srcdir}/$s" >> .gdbinit
5612 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5613 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
5615 # Put a breakpoint on __asan_report_error to help with debugging buffer
5618 *-fsanitize=address*)
5619 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
5623 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5624 AC_SUBST(gcc_tooldir)
5627 # Find a directory in which to install a shared libgcc.
5629 AC_ARG_ENABLE(version-specific-runtime-libs,
5630 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5631 [specify that runtime libraries should be
5632 installed in a compiler-specific directory])])
5634 # Substitute configuration variables
5637 AC_SUBST(all_compilers)
5638 AC_SUBST(all_gtfiles)
5639 AC_SUBST(all_lang_makefrags)
5640 AC_SUBST(all_languages)
5641 AC_SUBST(all_selected_languages)
5642 AC_SUBST(build_exeext)
5643 AC_SUBST(build_install_headers_dir)
5644 AC_SUBST(build_xm_file_list)
5645 AC_SUBST(build_xm_include_list)
5646 AC_SUBST(build_xm_defines)
5647 AC_SUBST(build_file_translate)
5648 AC_SUBST(check_languages)
5649 AC_SUBST(cpp_install_dir)
5650 AC_SUBST(xmake_file)
5651 AC_SUBST(tmake_file)
5652 AC_SUBST(TM_ENDIAN_CONFIG)
5653 AC_SUBST(TM_MULTILIB_CONFIG)
5654 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5655 AC_SUBST(extra_gcc_objs)
5656 AC_SUBST(user_headers_inc_next_pre)
5657 AC_SUBST(user_headers_inc_next_post)
5658 AC_SUBST(extra_headers_list)
5659 AC_SUBST(extra_objs)
5660 AC_SUBST(extra_programs)
5661 AC_SUBST(float_h_file)
5662 AC_SUBST(gcc_config_arguments)
5663 AC_SUBST(gcc_gxx_include_dir)
5664 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5665 AC_SUBST(host_exeext)
5666 AC_SUBST(host_xm_file_list)
5667 AC_SUBST(host_xm_include_list)
5668 AC_SUBST(host_xm_defines)
5669 AC_SUBST(out_host_hook_obj)
5671 AC_SUBST(lang_opt_files)
5672 AC_SUBST(lang_specs_files)
5673 AC_SUBST(lang_tree_files)
5674 AC_SUBST(local_prefix)
5676 AC_SUBST(objc_boehm_gc)
5678 AC_SUBST(out_object_file)
5679 AC_SUBST(common_out_file)
5680 AC_SUBST(common_out_object_file)
5681 AC_SUBST(tm_file_list)
5682 AC_SUBST(tm_include_list)
5683 AC_SUBST(tm_defines)
5684 AC_SUBST(tm_p_file_list)
5685 AC_SUBST(tm_p_include_list)
5686 AC_SUBST(xm_file_list)
5687 AC_SUBST(xm_include_list)
5688 AC_SUBST(xm_defines)
5689 AC_SUBST(use_gcc_stdint)
5690 AC_SUBST(c_target_objs)
5691 AC_SUBST(cxx_target_objs)
5692 AC_SUBST(fortran_target_objs)
5693 AC_SUBST(target_cpu_default)
5695 AC_SUBST_FILE(language_hooks)
5698 if test x${build} = x${host} ; then
5699 if test x${host} = x${target} ; then
5700 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5702 echo "Links are now set up to build a cross-compiler" 1>&2
5703 echo " from ${host} to ${target}." 1>&2
5706 if test x${host} = x${target} ; then
5707 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5708 echo " for ${target}." 1>&2
5710 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5711 echo " from ${host} to ${target}." 1>&2
5715 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5716 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5718 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5719 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5720 if test "x${ISLLIBS}" != "x" ; then
5721 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
5724 # Check whether isl_schedule_constraints_compute_schedule is available;
5725 # it's new in ISL-0.13.
5726 # Check whether isl_options_set_schedule_serialize_sccs is available;
5727 # it's new in ISL-0.15.
5728 if test "x${ISLLIBS}" != "x" ; then
5729 saved_CXXFLAGS="$CXXFLAGS"
5730 CXXFLAGS="$CXXFLAGS $ISLINC"
5732 LIBS="$LIBS $ISLLIBS $GMPLIBS"
5734 AC_MSG_CHECKING([Checking for isl_schedule_constraints_compute_schedule])
5735 AC_TRY_LINK([#include <isl/schedule.h>],
5736 [isl_schedule_constraints_compute_schedule (NULL);],
5737 [ac_has_isl_schedule_constraints_compute_schedule=yes],
5738 [ac_has_isl_schedule_constraints_compute_schedule=no])
5739 AC_MSG_RESULT($ac_has_isl_schedule_constraints_compute_schedule)
5741 AC_MSG_CHECKING([Checking for isl_options_set_schedule_serialize_sccs])
5742 AC_TRY_LINK([#include <isl/schedule.h>],
5743 [isl_options_set_schedule_serialize_sccs (NULL, 0);],
5744 [ac_has_isl_options_set_schedule_serialize_sccs=yes],
5745 [ac_has_isl_options_set_schedule_serialize_sccs=no])
5746 AC_MSG_RESULT($ac_has_isl_options_set_schedule_serialize_sccs)
5749 CXXFLAGS="$saved_CXXFLAGS"
5751 if test x"$ac_has_isl_schedule_constraints_compute_schedule" = x"yes"; then
5752 AC_DEFINE(HAVE_ISL_SCHED_CONSTRAINTS_COMPUTE_SCHEDULE, 1,
5753 [Define if isl_schedule_constraints_compute_schedule exists.])
5756 if test x"$ac_has_isl_options_set_schedule_serialize_sccs" = x"yes"; then
5757 AC_DEFINE(HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS, 1,
5758 [Define if isl_options_set_schedule_serialize_sccs exists.])
5763 AC_SUBST(pluginlibs)
5764 AC_SUBST(enable_plugin)
5765 if test x"$enable_plugin" = x"yes"; then
5766 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5770 # Enable --enable-host-shared
5771 AC_ARG_ENABLE(host-shared,
5772 [AS_HELP_STRING([--enable-host-shared],
5773 [build host code as shared libraries])],
5774 [PICFLAG=-fPIC], [PICFLAG=])
5775 AC_SUBST(enable_host_shared)
5779 AC_ARG_ENABLE(libquadmath-support,
5780 [AS_HELP_STRING([--disable-libquadmath-support],
5781 [disable libquadmath support for Fortran])],
5782 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5783 ENABLE_LIBQUADMATH_SUPPORT=yes)
5784 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5785 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5786 [Define to 1 to enable libquadmath support])
5790 # Specify what hash style to use by default.
5791 AC_ARG_WITH([linker-hash-style],
5792 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5793 [specify the linker hash style])],
5794 [case x"$withval" in
5796 LINKER_HASH_STYLE=sysv
5799 LINKER_HASH_STYLE=gnu
5802 LINKER_HASH_STYLE=both
5805 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5808 [LINKER_HASH_STYLE=''])
5809 if test x"${LINKER_HASH_STYLE}" != x; then
5810 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5811 [The linker hash style])
5814 # Specify what should be the default of -fdiagnostics-color option.
5815 AC_ARG_WITH([diagnostics-color],
5816 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
5817 [specify the default of -fdiagnostics-color option
5818 auto-if-env stands for -fdiagnostics-color=auto if
5819 GCC_COLOR environment variable is present and
5820 -fdiagnostics-color=never otherwise])],
5821 [case x"$withval" in
5823 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
5826 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
5829 DIAGNOSTICS_COLOR_DEFAULT=-1
5832 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
5835 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
5838 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
5839 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
5840 [The default for -fdiagnostics-color option])
5842 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
5843 # of jit/jit-playback.c.
5844 cat > gcc-driver-name.h <<EOF
5845 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
5848 # Check whether --enable-default-pie was given.
5849 AC_ARG_ENABLE(default-pie,
5850 [AS_HELP_STRING([--enable-default-pie],
5851 [enable Position Independent Executable as default])],
5852 enable_default_pie=$enableval,
5853 enable_default_pie=no)
5854 if test x$enable_default_pie == xyes ; then
5855 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
5856 [Define if your target supports default PIE and it is enabled.])
5858 AC_SUBST([enable_default_pie])
5860 # Check if -fno-PIE works.
5861 AC_CACHE_CHECK([for -fno-PIE option],
5863 [saved_CXXFLAGS="$CXXFLAGS"
5864 CXXFLAGS="$CXXFLAGS -fno-PIE"
5865 AC_COMPILE_IFELSE([int main(void) {return 0;}],
5866 [gcc_cv_c_no_fpie=yes],
5867 [gcc_cv_c_no_fpie=no])
5868 CXXFLAGS="$saved_CXXFLAGS"])
5869 if test "$gcc_cv_c_no_fpie" = "yes"; then
5870 NO_PIE_CFLAGS="-fno-PIE"
5872 AC_SUBST([NO_PIE_CFLAGS])
5874 # Check if -no-pie works.
5875 AC_CACHE_CHECK([for -no-pie option],
5877 [saved_LDFLAGS="$LDFLAGS"
5878 LDFLAGS="$LDFLAGS -no-pie"
5879 AC_LINK_IFELSE([int main(void) {return 0;}],
5880 [gcc_cv_no_pie=yes],
5882 LDFLAGS="$saved_LDFLAGS"])
5883 if test "$gcc_cv_no_pie" = "yes"; then
5884 NO_PIE_FLAG="-no-pie"
5886 AC_SUBST([NO_PIE_FLAG])
5888 # Check linker supports '-z bndplt'
5889 ld_bndplt_support=no
5890 AC_MSG_CHECKING(linker -z bndplt option)
5891 if test x"$ld_is_gold" = xno; then
5892 if test $in_tree_ld = yes ; then
5893 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5894 ld_bndplt_support=yes
5896 elif test x$gcc_cv_ld != x; then
5897 # Check if linker supports -a bndplt option
5898 if $gcc_cv_ld --help 2>/dev/null | grep -- '-z bndplt' > /dev/null; then
5899 ld_bndplt_support=yes
5903 if test x"$ld_bndplt_support" = xyes; then
5904 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
5905 [Define if your linker supports -z bndplt])
5907 AC_MSG_RESULT($ld_bndplt_support)
5909 # Configure the subdirectories
5910 # AC_CONFIG_SUBDIRS($subdirs)
5912 # Create the Makefile
5913 # and configure language subdirectories
5914 AC_CONFIG_FILES($all_outputs)
5916 AC_CONFIG_COMMANDS([default],
5918 case ${CONFIG_HEADERS} in
5919 *auto-host.h:config.in*)
5922 # Make sure all the subdirs exist.
5923 for d in $subdirs doc build common c-family
5925 test -d $d || mkdir $d
5928 [subdirs='$subdirs'])