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$local_prefix = x; then
121 local_prefix=/usr/local
124 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
125 # passed in by the toplevel make and thus we'd get different behavior
126 # depending on where we built the sources.
128 # Specify the g++ header file directory
129 AC_ARG_WITH(gxx-include-dir,
130 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
131 [specifies directory to put g++ header files])],
132 [case "${withval}" in
133 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
135 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
138 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
139 if test x${gcc_gxx_include_dir} = x; then
140 if test x${enable_version_specific_runtime_libs} = xyes; then
141 gcc_gxx_include_dir='${libsubdir}/include/c++'
143 libstdcxx_incdir='include/c++/$(version)'
144 if test x$host != x$target; then
145 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
147 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
151 gcc_gxx_include_dir_add_sysroot=0
152 if test "${with_sysroot+set}" = set; then
153 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
154 if test "${gcc_gxx_without_sysroot}"; then
155 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
156 gcc_gxx_include_dir_add_sysroot=1
160 AC_ARG_WITH(cpp_install_dir,
161 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
162 [install the user visible C preprocessor in DIR
163 (relative to PREFIX) as well as PREFIX/bin])],
164 [if test x$withval = xyes; then
165 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
166 elif test x$withval != xno; then
167 cpp_install_dir=$withval
170 # We would like to our source tree to be readonly. However when releases or
171 # pre-releases are generated, the flex/bison generated files as well as the
172 # various formats of manuals need to be included along with the rest of the
173 # sources. Therefore we have --enable-generated-files-in-srcdir to do
176 AC_MSG_CHECKING([whether to place generated files in the source directory])
177 dnl generated-files-in-srcdir is disabled by default
178 AC_ARG_ENABLE(generated-files-in-srcdir,
179 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
180 [put copies of generated files in source dir
181 intended for creating source tarballs for users
182 without texinfo bison or flex])],
183 generated_files_in_srcdir=$enableval,
184 generated_files_in_srcdir=no)
186 AC_MSG_RESULT($generated_files_in_srcdir)
188 if test "$generated_files_in_srcdir" = "yes"; then
195 # -------------------
196 # Find default linker
197 # -------------------
201 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
202 gnu_ld_flag="$with_gnu_ld",
205 # With pre-defined ld
207 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
208 DEFAULT_LINKER="$with_ld")
209 if test x"${DEFAULT_LINKER+set}" = x"set"; then
210 if test ! -x "$DEFAULT_LINKER"; then
211 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
212 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
215 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
216 [Define to enable the use of a default linker.])
219 AC_MSG_CHECKING([whether a default linker was specified])
220 if test x"${DEFAULT_LINKER+set}" = x"set"; then
221 if test x"$gnu_ld_flag" = x"no"; then
222 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
224 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
230 # With demangler in GNU ld
231 AC_ARG_WITH(demangler-in-ld,
232 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
233 demangler_in_ld="$with_demangler_in_ld",
236 # ----------------------
237 # Find default assembler
238 # ----------------------
242 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
243 gas_flag="$with_gnu_as",
247 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
248 DEFAULT_ASSEMBLER="$with_as")
249 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
250 if test ! -x "$DEFAULT_ASSEMBLER"; then
251 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
252 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
255 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
256 [Define to enable the use of a default assembler.])
259 AC_MSG_CHECKING([whether a default assembler was specified])
260 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
261 if test x"$gas_flag" = x"no"; then
262 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
264 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
274 # If a non-executable a.out is present (e.g. created by GNU as above even if
275 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
276 # file, even when creating an executable, so an execution test fails.
277 # Remove possible default executable files to avoid this.
279 # FIXME: This really belongs into AC_PROG_CC and can be removed once
280 # Autoconf includes it.
281 rm -f a.out a.exe b.out
283 # Find the native compiler
286 ACX_PROG_GNAT([-I"$srcdir"/ada])
288 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
289 # optimizations to be activated explicitly by the toplevel.
292 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
293 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
298 # Determine PICFLAG for target gnatlib.
299 GCC_PICFLAG_FOR_TARGET
300 AC_SUBST(PICFLAG_FOR_TARGET)
302 # -------------------------
303 # Check C compiler features
304 # -------------------------
306 AC_USE_SYSTEM_EXTENSIONS
312 # sizeof(char) is 1 by definition.
313 AC_CHECK_SIZEOF(void *)
314 AC_CHECK_SIZEOF(short)
316 AC_CHECK_SIZEOF(long)
317 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
319 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
320 AC_MSG_ERROR([uint64_t or int64_t not found])
323 # check what underlying integer type int64_t uses
325 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
326 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
330 template <typename T> struct X { };
332 struct X<long> { typedef long t; };
333 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
334 if test "$ac_cv_int64_t_type" = "long"; then
335 AC_DEFINE(INT64_T_IS_LONG, 1,
336 [Define if int64_t uses long as underlying type.])
338 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
342 template <typename T> struct X { };
344 struct X<long long> { typedef long long t; };
345 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
352 # ---------------------
353 # Warnings and checking
354 # ---------------------
356 # Check $CC warning features (if it's GCC).
357 # We want to use -pedantic, but we don't want warnings about
361 # * C++11 narrowing conversions in { }
362 # So, we only use -pedantic if we can disable those warnings.
364 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
365 AC_ARG_ENABLE(build-format-warnings,
366 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
367 [],[enable_build_format_warnings=yes])
368 AS_IF([test $enable_build_format_warnings = no],
369 [wf_opt=-Wno-format],[wf_opt=])
370 ACX_PROG_CC_WARNING_OPTS(
371 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual $wf_opt])), [loose_warn])
372 ACX_PROG_CC_WARNING_OPTS(
373 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
375 ACX_PROG_CC_WARNING_OPTS(
376 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
377 ACX_PROG_CC_WARNING_OPTS(
378 m4_quote(m4_do([-Woverloaded-virtual])), [strict_warn])
379 ACX_PROG_CC_WARNING_OPTS(
380 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
381 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
382 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
383 [-Wno-overlength-strings])), [strict_warn])
384 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
386 # The above macros do nothing if the compiler is not GCC. However, the
387 # Makefile has more goo to add other flags, so these variables are used
388 # to enable warnings only for GCC.
391 if test "x$GCC" = "xyes"; then
392 warn_cflags='$(GCC_WARN_CFLAGS)'
393 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
395 AC_SUBST(warn_cflags)
396 AC_SUBST(warn_cxxflags)
398 # Disable exceptions and RTTI if building with g++
399 ACX_PROG_CC_WARNING_OPTS(
400 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
403 # Enable expensive internal checks
405 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
409 AC_ARG_ENABLE(checking,
410 [AS_HELP_STRING([[--enable-checking[=LIST]]],
411 [enable expensive run-time checks. With LIST,
412 enable only specific categories of checks.
413 Categories are: yes,no,all,none,release.
414 Flags are: assert,df,fold,gc,gcac,gimple,misc,
415 rtlflag,rtl,runtime,tree,valgrind,types])],
416 [ac_checking_flags="${enableval}"],[
417 # Determine the default checks.
418 if test x$is_release = x ; then
419 ac_checking_flags=yes
421 ac_checking_flags=release
423 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
424 for check in release $ac_checking_flags
427 # these set all the flags to specific states
428 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
429 ac_fold_checking= ; ac_gc_checking=1 ;
430 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
431 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
432 ac_tree_checking=1 ; ac_valgrind_checking= ;
433 ac_types_checking=1 ;;
434 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
435 ac_fold_checking= ; ac_gc_checking= ;
436 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
437 ac_rtlflag_checking= ; ac_runtime_checking= ;
438 ac_tree_checking= ; ac_valgrind_checking= ;
439 ac_types_checking= ;;
440 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
441 ac_fold_checking=1 ; ac_gc_checking=1 ;
442 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
443 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
444 ac_tree_checking=1 ; ac_valgrind_checking= ;
445 ac_types_checking=1 ;;
446 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
447 ac_fold_checking= ; ac_gc_checking= ;
448 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
449 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
450 ac_tree_checking= ; ac_valgrind_checking= ;
451 ac_types_checking= ;;
452 # these enable particular checks
453 assert) ac_assert_checking=1 ;;
454 df) ac_df_checking=1 ;;
455 fold) ac_fold_checking=1 ;;
456 gc) ac_gc_checking=1 ;;
457 gcac) ac_gc_always_collect=1 ;;
458 gimple) ac_gimple_checking=1 ;;
459 misc) ac_checking=1 ;;
460 rtl) ac_rtl_checking=1 ;;
461 rtlflag) ac_rtlflag_checking=1 ;;
462 runtime) ac_runtime_checking=1 ;;
463 tree) ac_tree_checking=1 ;;
464 types) ac_types_checking=1 ;;
465 valgrind) ac_valgrind_checking=1 ;;
466 *) AC_MSG_ERROR(unknown check category $check) ;;
472 if test x$ac_checking != x ; then
473 AC_DEFINE(ENABLE_CHECKING, 1,
474 [Define if you want more run-time sanity checks. This one gets a grab
475 bag of miscellaneous but relatively cheap checks.])
476 nocommon_flag=-fno-common
478 AC_SUBST(nocommon_flag)
479 if test x$ac_df_checking != x ; then
480 AC_DEFINE(ENABLE_DF_CHECKING, 1,
481 [Define if you want more run-time sanity checks for dataflow.])
483 if test x$ac_assert_checking != x ; then
484 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
485 [Define if you want assertions enabled. This is a cheap check.])
487 if test x$ac_gimple_checking != x ; then
488 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
489 [Define if you want operations on GIMPLE (the basic data structure of
490 the high-level optimizers) to be checked for dynamic type safety at
491 runtime. This is moderately expensive.])
493 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
494 if test x$ac_runtime_checking != x ; then
495 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
496 [Define if you want runtime assertions enabled. This is a cheap check.])
498 if test x$ac_tree_checking != x ; then
499 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
500 [Define if you want all operations on trees (the basic data
501 structure of the front ends) to be checked for dynamic type safety
502 at runtime. This is moderately expensive. The tree browser debugging
503 routines will also be enabled by this option.
505 TREEBROWSER=tree-browser.o
508 if test x$ac_types_checking != x ; then
509 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
510 [Define if you want all gimple types to be verified after gimplifiation.
514 AC_SUBST(TREEBROWSER)
515 AC_SUBST(TREECHECKING)
516 if test x$ac_rtl_checking != x ; then
517 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
518 [Define if you want all operations on RTL (the basic data structure
519 of the optimizer and back end) to be checked for dynamic type safety
520 at runtime. This is quite expensive.])
522 if test x$ac_rtlflag_checking != x ; then
523 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
524 [Define if you want RTL flag accesses to be checked against the RTL
525 codes that are supported for each access macro. This is relatively
528 if test x$ac_gc_checking != x ; then
529 AC_DEFINE(ENABLE_GC_CHECKING, 1,
530 [Define if you want the garbage collector to do object poisoning and
531 other memory allocation checks. This is quite expensive.])
533 if test x$ac_gc_always_collect != x ; then
534 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
535 [Define if you want the garbage collector to operate in maximally
536 paranoid mode, validating the entire heap and collecting garbage at
537 every opportunity. This is extremely expensive.])
539 if test x$ac_fold_checking != x ; then
540 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
541 [Define if you want fold checked that it never destructs its argument.
542 This is quite expensive.])
544 valgrind_path_defines=
547 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
548 dnl # an if statement. This was the source of very frustrating bugs
549 dnl # in converting to autoconf 2.5x!
550 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
552 # It is certainly possible that there's valgrind but no valgrind.h.
553 # GCC relies on making annotations so we must have both.
554 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
555 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
556 [[#include <valgrind/memcheck.h>
557 #ifndef VALGRIND_DISCARD
558 #error VALGRIND_DISCARD not defined
560 [gcc_cv_header_valgrind_memcheck_h=yes],
561 [gcc_cv_header_valgrind_memcheck_h=no])
562 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
563 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
564 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
565 [[#include <memcheck.h>
566 #ifndef VALGRIND_DISCARD
567 #error VALGRIND_DISCARD not defined
569 [gcc_cv_header_memcheck_h=yes],
570 [gcc_cv_header_memcheck_h=no])
571 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
572 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
573 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
574 [Define if valgrind's valgrind/memcheck.h header is installed.])
576 if test $gcc_cv_header_memcheck_h = yes; then
577 AC_DEFINE(HAVE_MEMCHECK_H, 1,
578 [Define if valgrind's memcheck.h header is installed.])
581 if test x$ac_valgrind_checking != x ; then
582 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
583 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
584 if test "x$valgrind_path" = "x" \
585 || (test $have_valgrind_h = no \
586 && test $gcc_cv_header_memcheck_h = no \
587 && test $gcc_cv_header_valgrind_memcheck_h = no); then
588 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
590 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
591 valgrind_command="$valgrind_path -q"
592 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
593 [Define if you want to run subprograms and generated programs
594 through valgrind (a memory checker). This is extremely expensive.])
596 AC_SUBST(valgrind_path_defines)
597 AC_SUBST(valgrind_command)
599 # Enable code coverage collection
600 AC_ARG_ENABLE(coverage,
601 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
602 [enable compiler's code coverage collection.
603 Use to measure compiler performance and locate
604 unused parts of the compiler. With LEVEL, specify
605 optimization. Values are opt, noopt,
607 [case "${enableval}" in
609 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
612 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
615 # a.k.a. --disable-coverage
619 AC_MSG_ERROR(unknown coverage setting $enableval)
623 AC_SUBST(coverage_flags)
625 AC_ARG_ENABLE(gather-detailed-mem-stats,
626 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
627 [enable detailed memory allocation stats gathering])], [],
628 [enable_gather_detailed_mem_stats=no])
629 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
630 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
631 [Define to enable detailed memory allocation stats gathering.])
633 AC_ARG_ENABLE(valgrind-annotations,
634 [AS_HELP_STRING([--enable-valgrind-annotations],
635 [enable valgrind runtime interaction])], [],
636 [enable_valgrind_annotations=no])
637 if test x$enable_valgrind_annotations != xno \
638 || test x$ac_valgrind_checking != x; then
639 if (test $have_valgrind_h = no \
640 && test $gcc_cv_header_memcheck_h = no \
641 && test $gcc_cv_header_valgrind_memcheck_h = no); then
642 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
644 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
645 [Define to get calls to the valgrind runtime enabled.])
648 # -------------------------------
649 # Miscenalleous configure options
650 # -------------------------------
654 [AS_HELP_STRING([--with-stabs],
655 [arrange to use stabs instead of host debug format])],
659 # Determine whether or not multilibs are enabled.
660 AC_ARG_ENABLE(multilib,
661 [AS_HELP_STRING([--enable-multilib],
662 [enable library support for multiple ABIs])],
663 [], [enable_multilib=yes])
664 AC_SUBST(enable_multilib)
666 # Determine whether or not multiarch is enabled.
667 AC_ARG_ENABLE(multiarch,
668 [AS_HELP_STRING([--enable-multiarch],
669 [enable support for multiarch paths])],
670 [case "${enableval}" in
671 yes|no|auto) enable_multiarch=$enableval;;
672 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
673 esac], [enable_multiarch=auto])
674 if test x${enable_multiarch} = xauto; then
675 if test x${with_native_system_header_dir} != x; then
676 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
679 if test x$host != x$target && test "x$with_sysroot" = x; then
680 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
684 AC_MSG_CHECKING(for multiarch configuration)
685 AC_SUBST(enable_multiarch)
686 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
688 # needed for setting the multiarch name for soft-float/hard-float ABIs
692 # Enable __cxa_atexit for C++.
693 AC_ARG_ENABLE(__cxa_atexit,
694 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
697 # Enable C extension for decimal float if target supports it.
698 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
700 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
701 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
702 [Define to 1 to enable decimal float extension to C.])
704 # Use default_decimal_float for dependency.
705 enable_decimal_float=$default_decimal_float
707 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
708 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
709 [Define to 1 to specify that we are using the BID decimal floating
710 point format instead of DPD])
712 # Enable C extension for fixed-point arithmetic.
713 AC_ARG_ENABLE(fixed-point,
714 [AS_HELP_STRING([--enable-fixed-point],
715 [enable fixed-point arithmetic extension to C])],
720 enable_fixed_point=yes
724 enable_fixed_point=yes
727 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
728 enable_fixed_point=no
732 AC_SUBST(enable_fixed_point)
734 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
735 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
736 [Define to 1 to enable fixed-point arithmetic extension to C.])
739 # Pass with no value to take the default
740 # Pass with a value to specify a thread package
741 AC_ARG_ENABLE(threads,
742 [AS_HELP_STRING([[--enable-threads[=LIB]]],
743 [enable thread usage for target GCC,
744 using LIB thread package])],,
748 [AS_HELP_STRING([--enable-tls],
749 [enable or disable generation of tls code
750 overriding the assembler check for tls support])],
754 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
755 Valid choices are 'yes' and 'no'.]) ;;
759 AC_ARG_ENABLE(objc-gc,
760 [AS_HELP_STRING([--enable-objc-gc],
761 [enable the use of Boehm's garbage collector with
762 the GNU Objective-C runtime])],
763 if test x$enable_objc_gc = xno; then
771 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
772 dwarf2="$with_dwarf2",
775 AC_ARG_ENABLE(shared,
776 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
778 case $enable_shared in
782 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
783 for pkg in $enableval; do
784 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
791 ], [enable_shared=yes])
792 AC_SUBST(enable_shared)
794 AC_ARG_WITH([native-system-header-dir],
795 [ --with-native-system-header-dir=dir
796 use dir as the directory to look for standard
797 system header files in. Defaults to /usr/include.],
799 case ${with_native_system_header_dir} in
800 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
801 /* | [[A-Za-z]]:[[\\/]]*) ;;
802 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
804 configured_native_system_header_dir="${withval}"
805 ], [configured_native_system_header_dir=])
807 AC_ARG_WITH(build-sysroot,
808 [AS_HELP_STRING([--with-build-sysroot=sysroot],
809 [use sysroot as the system root during the build])],
810 [if test x"$withval" != x ; then
811 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
813 [SYSROOT_CFLAGS_FOR_TARGET=])
814 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
816 if test "x$prefix" = xNONE; then
817 test_prefix=/usr/local
821 if test "x$exec_prefix" = xNONE; then
822 test_exec_prefix=$test_prefix
824 test_exec_prefix=$exec_prefix
828 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
829 [search for usr/lib, usr/include, et al, within DIR])],
831 case ${with_sysroot} in
832 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
833 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
836 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
837 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
839 case ${TARGET_SYSTEM_ROOT} in
840 "${test_prefix}"|"${test_prefix}/"*|\
841 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
842 '${prefix}'|'${prefix}/'*|\
843 '${exec_prefix}'|'${exec_prefix}/'*)
844 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
845 TARGET_SYSTEM_ROOT_DEFINE="$t"
850 TARGET_SYSTEM_ROOT_DEFINE=
851 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
853 AC_SUBST(TARGET_SYSTEM_ROOT)
854 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
855 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
858 [AS_HELP_STRING([--with-specs=SPECS],
859 [add SPECS to driver command-line processing])],
860 [CONFIGURE_SPECS=$withval],
863 AC_SUBST(CONFIGURE_SPECS)
865 ACX_PKGVERSION([GCC])
866 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
868 # Sanity check enable_languages in case someone does not run the toplevel
869 # configure # script.
870 AC_ARG_ENABLE(languages,
871 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
872 [case ,${enable_languages}, in
874 # go safe -- we cannot be much sure without the toplevel
876 # analysis of which target libs are present and usable
880 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
885 enable_languages=c,${enable_languages}
888 [enable_languages=c])
890 if test x"$enable_as_accelerator_for" != x; then
891 AC_DEFINE(ACCEL_COMPILER, 1,
892 [Define if this compiler should be built as the offload target compiler.])
893 enable_as_accelerator=yes
896 # In this case we expect offload compiler to be built as native, so we
897 # need to rename the driver to avoid clashes with host's drivers.
898 program_transform_name="s&^&${target}-&" ;;
900 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
901 program_transform_name=`echo $program_transform_name | sed $sedscript`
902 accel_dir_suffix=/accel/${target_noncanonical}
903 real_target_noncanonical=${enable_as_accelerator_for}
905 AC_SUBST(enable_as_accelerator)
906 AC_SUBST(real_target_noncanonical)
907 AC_SUBST(accel_dir_suffix)
909 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
910 tgt=`echo $tgt | sed 's/=.*//'`
911 if test x"$offload_targets" = x; then
914 offload_targets="$offload_targets:$tgt"
917 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
918 [Define to hold the list of target names suitable for offloading.])
919 if test x"$offload_targets" != x; then
920 AC_DEFINE(ENABLE_OFFLOADING, 1,
921 [Define this to enable support for offloading.])
924 AC_ARG_WITH(multilib-list,
925 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
927 with_multilib_list=default)
929 # -------------------------
930 # Checks for other programs
931 # -------------------------
935 # Find some useful tools
937 # We need awk to create options.c and options.h.
938 # Bail out if it's missing.
940 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
947 AC_SUBST(ranlib_flags)
951 # See if cmp has --ignore-initial.
952 gcc_AC_PROG_CMP_IGNORE_INITIAL
954 # See if we have the mktemp command.
955 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
957 # See if makeinfo has been installed and is modern enough
958 # that we can use it.
959 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
960 [GNU texinfo.* \([0-9][0-9.]*\)],
961 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
962 if test $gcc_cv_prog_makeinfo_modern = no; then
964 *** Makeinfo is missing or too old.
965 *** Info documentation will not be built.])
972 # Is pod2man recent enough to regenerate manpages?
973 AC_MSG_CHECKING([for recent Pod::Man])
974 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
976 GENERATED_MANPAGES=generated-manpages
981 AC_SUBST(GENERATED_MANPAGES)
983 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
986 dnl Don't use AC_PROG_LEX; we insist on flex.
987 dnl LEXLIB is not useful in gcc.
988 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
991 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
993 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
994 # check for build == host before using them.
997 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
998 && test -d ../binutils ; then
999 NM='${objdir}/../binutils/nm-new'
1001 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1005 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1006 && test -d ../binutils ; then
1007 AR='${objdir}/../binutils/ar'
1009 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1012 # The jit documentation looks better if built with sphinx, but can be
1013 # built with texinfo if sphinx is not available.
1014 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1015 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1017 # --------------------
1018 # Checks for C headers
1019 # --------------------
1021 # Need to reject headers which give warnings, so that the -Werror bootstrap
1022 # works later. *sigh* This needs to come before all header checks.
1029 AC_HEADER_TIOCGWINSZ
1030 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1031 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
1032 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1033 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1035 # Check for thread headers.
1036 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1037 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1039 # These tests can't be done till we know if we have limits.h.
1043 # ----------------------
1044 # Checks for C++ headers
1045 # ----------------------
1047 dnl Autoconf will give an error in the configure script if there is no
1048 dnl C++ preprocessor. Hack to prevent that.
1049 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1051 m4_popdef([AC_MSG_ERROR])[]dnl
1055 AC_CHECK_HEADERS(unordered_map)
1056 AC_CHECK_HEADERS(tr1/unordered_map)
1057 AC_CHECK_HEADERS(ext/hash_map)
1062 # Dependency checking.
1067 AC_CONFIG_COMMANDS([gccdepdir],[
1068 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1069 for lang in $subdirs c-family common
1071 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1072 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1074 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1082 # These libraries may be used by collect2.
1083 # We may need a special search path to get them linked.
1084 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1086 for libs in '' -lld -lmld \
1087 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1088 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1091 AC_TRY_LINK_FUNC(ldopen,
1092 [gcc_cv_collect2_libs="$libs"; break])
1095 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1096 case $gcc_cv_collect2_libs in
1098 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1100 AC_SUBST(COLLECT2_LIBS)
1102 # When building Ada code on Alpha, we need exc_resume which is usually in
1103 # -lexc. So test for it.
1106 AC_SEARCH_LIBS(exc_resume, exc)
1109 AC_SUBST(GNAT_LIBEXC)
1111 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1114 AC_SEARCH_LIBS(kstat_open, kstat)
1115 EXTRA_GCC_LIBS="$LIBS"
1117 AC_SUBST(EXTRA_GCC_LIBS)
1119 # Some systems put ldexp and frexp in libm instead of libc; assume
1120 # they're both in the same place. jcf-dump needs them.
1123 AC_SEARCH_LIBS(ldexp, m)
1128 # Use <inttypes.h> only if it exists,
1129 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1131 AC_MSG_CHECKING(for inttypes.h)
1132 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1133 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1134 [[#define __STDC_FORMAT_MACROS
1135 #include <sys/types.h>
1136 #include <inttypes.h>]],
1141 [gcc_cv_header_inttypes_h=yes],
1142 [gcc_cv_header_inttypes_h=no])])
1143 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1144 if test $gcc_cv_header_inttypes_h = yes; then
1145 AC_DEFINE(HAVE_INTTYPES_H, 1,
1146 [Define if you have a working <inttypes.h> header file.])
1149 dnl Disabled until we have a complete test for buggy enum bitfields.
1150 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1152 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1153 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1154 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1155 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1156 putchar_unlocked putc_unlocked)
1157 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1158 popen sysconf strsignal getrusage nl_langinfo \
1159 gettimeofday mbstowcs wcswidth mmap setlocale \
1160 gcc_UNLOCKED_FUNCS madvise)
1162 if test x$ac_cv_func_mbstowcs = xyes; then
1163 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1164 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1170 [gcc_cv_func_mbstowcs_works=yes],
1171 [gcc_cv_func_mbstowcs_works=no],
1172 [gcc_cv_func_mbstowcs_works=yes])])
1173 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1174 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1175 [Define this macro if mbstowcs does not crash when its
1176 first argument is NULL.])
1180 AC_CHECK_TYPE(ssize_t, int)
1181 AC_CHECK_TYPE(caddr_t, char *)
1183 GCC_AC_FUNC_MMAP_BLACKLIST
1187 # Under VMS, vfork works very differently than on Unix. The standard test
1188 # won't work, and it isn't easily adaptable. It makes more sense to
1190 ac_cv_func_vfork_works=yes
1195 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1196 # iconv() prototype.
1201 # Until we have in-tree GNU iconv:
1203 AC_SUBST(LIBICONV_DEP)
1209 # We will need to find libiberty.h and ansidecl.h
1210 saved_CFLAGS="$CFLAGS"
1211 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1212 saved_CXXFLAGS="$CXXFLAGS"
1213 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1214 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1215 stpcpy strnlen strsignal strstr strverscmp \
1216 strtol strtoul strtoll strtoull \
1217 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1218 free basename getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1219 #include "ansidecl.h"
1220 #include "system.h"])
1222 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1223 #include "ansidecl.h"
1225 #ifdef HAVE_SYS_RESOURCE_H
1226 #include <sys/resource.h>
1230 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1231 #include "ansidecl.h"
1233 #ifdef HAVE_SYS_RESOURCE_H
1234 #include <sys/resource.h>
1236 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1237 [Define to `long' if <sys/resource.h> doesn't define.])])
1239 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1240 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1241 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1242 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1243 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1244 #include "ansidecl.h"
1253 gcc_AC_CHECK_DECLS(times, , ,[
1254 #include "ansidecl.h"
1256 #ifdef HAVE_SYS_TIMES_H
1257 #include <sys/times.h>
1261 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1262 #include "ansidecl.h"
1267 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1270 gcc_AC_CHECK_DECLS(madvise, , ,[
1271 #include "ansidecl.h"
1276 # More time-related stuff.
1277 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1278 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1279 #include "ansidecl.h"
1281 #ifdef HAVE_SYS_TIMES_H
1282 #include <sys/times.h>
1284 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1285 if test $ac_cv_struct_tms = yes; then
1286 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1287 [Define if <sys/times.h> defines struct tms.])
1290 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1291 # revisit after autoconf 2.50.
1292 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1293 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1294 #include "ansidecl.h"
1296 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1297 if test $gcc_cv_type_clock_t = yes; then
1298 AC_DEFINE(HAVE_CLOCK_T, 1,
1299 [Define if <time.h> defines clock_t.])
1302 # Check if F_SETLKW is supported by fcntl.
1303 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1304 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1305 #include <fcntl.h>]], [[
1311 return fcntl (1, F_SETLKW, &fl);]])],
1312 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1313 if test $ac_cv_f_setlkw = yes; then
1314 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1315 [Define if F_SETLKW supported by fcntl.])
1318 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1319 CFLAGS="$saved_CFLAGS"
1320 CXXFLAGS="$saved_CXXFLAGS"
1322 # mkdir takes a single argument on some systems.
1323 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1331 # With Setjmp/Longjmp based exception handling.
1332 AC_ARG_ENABLE(sjlj-exceptions,
1333 [AS_HELP_STRING([--enable-sjlj-exceptions],
1334 [arrange to use setjmp/longjmp exception handling])],
1337 if test $enableval != yes; then
1338 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1343 force_sjlj_exceptions=yes],
1346 force_sjlj_exceptions=yes
1350 force_sjlj_exceptions=yes
1354 force_sjlj_exceptions=no
1357 if test $force_sjlj_exceptions = yes; then
1358 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1359 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1360 [Define 0/1 to force the choice for exception handling model.])
1363 # --------------------------------------------------------
1364 # Build, host, and target specific configuration fragments
1365 # --------------------------------------------------------
1367 # Collect build-machine-specific information.
1368 . ${srcdir}/config.build
1370 # Collect host-machine-specific information.
1371 . ${srcdir}/config.host
1375 # Collect target-machine-specific information.
1376 . ${srcdir}/config.gcc
1378 extra_objs="${host_extra_objs} ${extra_objs}"
1379 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1381 # Default the target-machine variables that were not explicitly set.
1382 if test x"$tm_file" = x
1383 then tm_file=$cpu_type/$cpu_type.h; fi
1385 if test x"$extra_headers" = x
1386 then extra_headers=; fi
1388 if test x$md_file = x
1389 then md_file=$cpu_type/$cpu_type.md; fi
1391 if test x$out_file = x
1392 then out_file=$cpu_type/$cpu_type.c; fi
1394 if test x"$tmake_file" = x
1395 then tmake_file=$cpu_type/t-$cpu_type
1398 # Support --enable-initfini-array.
1399 if test x$enable_initfini_array != xno; then
1400 tm_file="${tm_file} initfini-array.h"
1403 if test x"$dwarf2" = xyes
1404 then tm_file="$tm_file tm-dwarf2.h"
1407 # Say what files are being used for the output code and MD file.
1408 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1409 echo "Using \`$srcdir/config/$md_file' as machine description file."
1411 # If any of the xm_file variables contain nonexistent files, warn
1412 # about them and drop them.
1415 for x in $build_xm_file; do
1416 if test -f $srcdir/config/$x
1418 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1424 for x in $host_xm_file; do
1425 if test -f $srcdir/config/$x
1427 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1433 for x in $xm_file; do
1434 if test -f $srcdir/config/$x
1436 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1442 for f in $tm_file; do
1445 if test $count = ax; then
1446 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1448 echo "Using the following target machine macro files:"
1449 for f in $tm_file; do
1450 echo " $srcdir/config/$f"
1454 if test x$use_long_long_for_widest_fast_int = xyes; then
1455 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1456 [Define to 1 if the 'long long' type is wider than 'long' but still
1457 efficiently supported by the host hardware.])
1460 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1461 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1463 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1464 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1467 for f in $host_xm_file; do
1470 if test $count = a; then
1472 elif test $count = ax; then
1473 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1475 echo "Using the following host machine macro files:"
1476 for f in $host_xm_file; do
1477 echo " $srcdir/config/$f"
1480 echo "Using ${out_host_hook_obj} for host machine hooks."
1482 if test "$host_xm_file" != "$build_xm_file"; then
1484 for f in $build_xm_file; do
1487 if test $count = a; then
1489 elif test $count = ax; then
1490 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1492 echo "Using the following build machine macro files:"
1493 for f in $build_xm_file; do
1494 echo " $srcdir/config/$f"
1499 if test -n "$configured_native_system_header_dir"; then
1500 native_system_header_dir=$configured_native_system_header_dir
1502 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1503 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1507 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1508 gcc_cv_mcontext_underscores,
1510 #include <sys/cdefs.h>
1511 #include <sys/signal.h>
1512 #include <ucontext.h>
1513 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1515 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1516 if test $gcc_cv_mcontext_underscores = yes; then
1517 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1518 [mcontext_t fields start with __])
1527 # Check if a valid thread package
1528 case ${enable_threads} in
1531 target_thread_file='single'
1535 target_thread_file='single'
1537 aix | dce | lynx | mipssde | posix | rtems | \
1538 single | tpf | vxworks | win32)
1539 target_thread_file=${enable_threads}
1542 echo "${enable_threads} is an unknown thread package" 1>&2
1547 if test x${thread_file} = x; then
1548 # No thread file set by target-specific clauses in config.gcc,
1549 # so use file chosen by default logic above
1550 thread_file=${target_thread_file}
1558 if test x$enable___cxa_atexit = xyes || \
1559 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1560 if test x$host = x$target; then
1562 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1563 # keyed to flag_use_cxa_atexit
1571 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1572 [echo "__cxa_atexit can't be enabled on this target"])
1576 # We can't check for __cxa_atexit when building a cross, so assume
1580 if test x$use_cxa_atexit = xyes; then
1581 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1582 [Define if you want to use __cxa_atexit, rather than atexit, to
1583 register C++ destructors for local statics and global objects.
1584 This is essential for fully standards-compliant handling of
1585 destructors, but requires __cxa_atexit in libc.])
1589 # Look for a file containing extra machine modes.
1590 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1591 extra_modes_file='$(srcdir)'/config/${extra_modes}
1592 AC_SUBST(extra_modes_file)
1593 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1594 [Define to the name of a file containing a list of extra machine modes
1595 for this architecture.])
1598 # Convert extra_options into a form suitable for Makefile use.
1601 for f in $extra_options; do
1602 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1603 all_opt_files="$all_opt_files $srcdir/config/$f"
1605 AC_SUBST(extra_opt_files)
1607 # auto-host.h is the file containing items generated by autoconf and is
1608 # the first file included by config.h.
1609 # If host=build, it is correct to have bconfig include auto-host.h
1610 # as well. If host!=build, we are in error and need to do more
1611 # work to find out the build config parameters.
1612 if test x$host = x$build
1614 build_auto=auto-host.h
1616 # We create a subdir, then run autoconf in the subdir.
1617 # To prevent recursion we set host and build for the new
1618 # invocation of configure to the build for this invocation
1625 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1626 *) realsrcdir=../${srcdir};;
1628 # Clearing GMPINC is necessary to prevent host headers being
1629 # used by the build compiler. Defining GENERATOR_FILE stops
1630 # system.h from including gmp.h.
1631 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1632 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1633 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1634 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1635 ${realsrcdir}/configure \
1636 --enable-languages=${enable_languages-all} \
1637 --target=$target_alias --host=$build_alias --build=$build_alias
1639 # We just finished tests for the build machine, so rename
1640 # the file auto-build.h in the gcc directory.
1641 mv auto-host.h ../auto-build.h
1644 build_auto=auto-build.h
1646 AC_SUBST(build_subdir)
1648 tm_file="${tm_file} defaults.h"
1649 tm_p_file="${tm_p_file} tm-preds.h"
1650 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1651 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1652 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1653 # put this back in temporarily.
1654 xm_file="auto-host.h ansidecl.h ${xm_file}"
1661 # Compile in configure arguments.
1662 if test -f configargs.h ; then
1663 # Being re-configured.
1664 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1665 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1667 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1670 # Double all backslashes and backslash all quotes to turn
1671 # gcc_config_arguments into a C string.
1672 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1673 $gcc_config_arguments
1675 gcc_config_arguments_str=`cat conftest.out`
1678 cat > configargs.h <<EOF
1679 /* Generated automatically. */
1680 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1681 static const char thread_model[] = "$thread_file";
1683 static const struct {
1684 const char *name, *value;
1685 } configure_default_options[] = $configure_default_options;
1690 gcc_BASEVER=`cat $srcdir/BASE-VER`
1691 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1692 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1693 if test -f $srcdir/REVISION ; then
1694 gcc_REVISION=`cat $srcdir/REVISION`
1698 cat > plugin-version.h <<EOF
1699 #include "configargs.h"
1701 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1702 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1703 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1704 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1706 static char basever[] = "$gcc_BASEVER";
1707 static char datestamp[] = "$gcc_DATESTAMP";
1708 static char devphase[] = "$gcc_DEVPHASE";
1709 static char revision[] = "$gcc_REVISION";
1711 /* FIXME plugins: We should make the version information more precise.
1712 One way to do is to add a checksum. */
1714 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1716 configuration_arguments};
1720 # Internationalization
1721 ZW_GNU_GETTEXT_SISTER_DIR
1723 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1724 # -liconv on the link line twice.
1725 case "$LIBINTL" in *$LIBICONV*)
1729 AC_ARG_ENABLE(secureplt,
1730 [AS_HELP_STRING([--enable-secureplt],
1731 [enable -msecure-plt by default for PowerPC])],
1734 AC_ARG_ENABLE(leading-mingw64-underscores,
1735 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1736 [enable leading underscores on 64 bit mingw targets]),
1738 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1739 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1740 [Define if we should use leading underscore on 64 bit mingw targets])])
1743 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1746 AC_ARG_ENABLE(frame-pointer,
1747 [AS_HELP_STRING([--enable-frame-pointer],
1748 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1751 linux* | darwin[[8912]]*)
1752 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1754 enable_frame_pointer=no
1757 enable_frame_pointer=yes
1762 # Windows32 Registry support for specifying GCC installation paths.
1763 AC_ARG_ENABLE(win32-registry,
1764 [AS_HELP_STRING([--disable-win32-registry],
1765 [disable lookup of installation paths in the
1766 Registry on Windows hosts])
1767 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1768 AS_HELP_STRING([--enable-win32-registry=KEY],
1769 [use KEY instead of GCC version as the last portion
1770 of the registry key])],,)
1773 win32 | pe | cygwin* | mingw32* | uwin*)
1774 if test "x$enable_win32_registry" != xno; then
1775 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1778 if test "x$enable_win32_registry" != xno; then
1779 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1780 [Define to 1 if installation paths should be looked up in the Windows
1781 Registry. Ignored on non-Windows hosts.])
1783 if test "x$enable_win32_registry" != xyes \
1784 && test "x$enable_win32_registry" != x; then
1785 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1786 [Define to be the last component of the Windows registry key under which
1787 to look for installation paths. The full key used will be
1788 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1789 The default is the GCC version number.])
1795 # Get an absolute path to the GCC top-level source directory
1796 holddir=`${PWDCMD-pwd}`
1798 topdir=`${PWDCMD-pwd}`
1801 # Conditionalize the makefile for this host machine.
1803 for f in ${host_xmake_file}
1805 if test -f ${srcdir}/config/$f
1807 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1811 # Conditionalize the makefile for this target machine.
1813 for f in ${tmake_file}
1815 if test -f ${srcdir}/config/$f
1817 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1820 tmake_file="${tmake_file_}"
1822 out_object_file=`basename $out_file .c`.o
1823 common_out_object_file=`basename $common_out_file .c`.o
1825 tm_file_list="options.h"
1826 tm_include_list="options.h insn-constants.h"
1827 for f in $tm_file; do
1830 f=`echo $f | sed 's/^..//'`
1831 tm_file_list="${tm_file_list} $f"
1832 tm_include_list="${tm_include_list} $f"
1835 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1836 tm_include_list="${tm_include_list} $f"
1839 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1840 tm_include_list="${tm_include_list} config/$f"
1847 for f in $tm_p_file; do
1850 tm_p_file_list="${tm_p_file_list} $f"
1851 tm_p_include_list="${tm_p_include_list} $f"
1854 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1855 tm_p_include_list="${tm_p_include_list} config/$f"
1861 for f in $xm_file; do
1864 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1865 xm_include_list="${xm_include_list} $f"
1868 xm_file_list="${xm_file_list} $f"
1869 xm_include_list="${xm_include_list} $f"
1872 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1873 xm_include_list="${xm_include_list} config/$f"
1879 host_xm_include_list=
1880 for f in $host_xm_file; do
1883 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1884 host_xm_include_list="${host_xm_include_list} $f"
1887 host_xm_file_list="${host_xm_file_list} $f"
1888 host_xm_include_list="${host_xm_include_list} $f"
1891 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1892 host_xm_include_list="${host_xm_include_list} config/$f"
1898 for f in $build_xm_file; do
1901 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1902 build_xm_include_list="${build_xm_include_list} $f"
1904 auto-build.h | auto-host.h )
1905 build_xm_file_list="${build_xm_file_list} $f"
1906 build_xm_include_list="${build_xm_include_list} $f"
1909 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1910 build_xm_include_list="${build_xm_include_list} config/$f"
1915 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1916 # cross-compiler which does not use the native headers and libraries.
1917 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1918 CROSS= AC_SUBST(CROSS)
1919 ALL=all.internal AC_SUBST(ALL)
1920 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1922 if test "x$with_build_sysroot" != x; then
1923 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1925 # This value is used, even on a native system, because
1926 # CROSS_SYSTEM_HEADER_DIR is just
1927 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1928 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1931 if test x$host != x$target
1933 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1935 SYSTEM_HEADER_DIR=$build_system_header_dir
1936 case "$host","$target" in
1937 # Darwin crosses can use the host system's libraries and headers,
1938 # because of the fat library support. Of course, it must be the
1939 # same version of Darwin on both sides. Allow the user to
1940 # just say --target=foo-darwin without a version number to mean
1941 # "the version on this system".
1942 *-*-darwin*,*-*-darwin*)
1943 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1944 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1945 if test $hostos = $targetos -o $targetos = darwin ; then
1947 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1952 i?86-*-*,x86_64-*-* \
1953 | powerpc*-*-*,powerpc64*-*-*)
1954 CROSS="$CROSS -DNATIVE_CROSS" ;;
1959 if test "x$with_headers" = x; then
1966 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1967 SYSTEM_HEADER_DIR=$build_system_header_dir
1970 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
1971 if test "x$with_headers" != x; then
1972 target_header_dir=$with_headers
1973 elif test "x$with_sysroot" = x; then
1974 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
1975 elif test "x$with_build_sysroot" != "x"; then
1976 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
1977 elif test "x$with_sysroot" = xyes; then
1978 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
1980 target_header_dir="${with_sysroot}${native_system_header_dir}"
1983 target_header_dir=${native_system_header_dir}
1986 # If this is a cross-compiler that does not
1987 # have its own set of headers then define
1990 # If this is using newlib, without having the headers available now,
1991 # then define inhibit_libc in LIBGCC2_CFLAGS.
1992 # This prevents libgcc2 from containing any code which requires libc
1994 : ${inhibit_libc=false}
1995 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1996 test x$with_newlib = xyes ; } &&
1997 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2000 AC_SUBST(inhibit_libc)
2002 # When building gcc with a cross-compiler, we need to adjust things so
2003 # that the generator programs are still built with the native compiler.
2004 # Also, we cannot run fixincludes.
2006 # These are the normal (build=host) settings:
2007 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2008 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2009 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2010 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2011 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2012 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2014 # And these apply if build != host, or we are generating coverage data
2015 if test x$build != x$host || test "x$coverage_flags" != x
2017 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2018 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2019 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2022 # Expand extra_headers to include complete path.
2023 # This substitutes for lots of t-* files.
2025 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2026 for file in ${extra_headers} ; do
2027 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2030 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2031 if test x"$use_gcc_tgmath" = xyes
2032 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2035 # Define collect2 in Makefile.
2036 case $host_can_use_collect2 in
2038 *) collect2='collect2$(exeext)' ;;
2040 AC_SUBST([collect2])
2042 # Add a definition of USE_COLLECT2 if system wants one.
2043 case $use_collect2 in
2044 no) use_collect2= ;;
2047 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2048 xm_defines="${xm_defines} USE_COLLECT2"
2049 case $host_can_use_collect2 in
2051 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2057 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2058 [Define to the name of the LTO plugin DSO that must be
2059 passed to the linker's -plugin=LIB option.])
2061 # ---------------------------
2062 # Assembler & linker features
2063 # ---------------------------
2065 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2066 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2067 # However when ld-new is first executed from the build tree, libtool will
2068 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2069 # to the build tree. While doing this we need to use the previous-stage
2070 # linker, or we have an infinite loop. The presence of a shell script as
2071 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2072 # the gcc/collect-ld script. So we need to know how libtool works, or
2073 # exec-tool will fail.
2075 m4_defun([_LT_CONFIG_COMMANDS], [])
2078 AC_SUBST(enable_fast_install)
2080 # Identify the assembler which will work hand-in-glove with the newly
2081 # built GCC, so that we can examine its features. This is the assembler
2082 # which will be driven by the driver program.
2084 # If build != host, and we aren't building gas in-tree, we identify a
2085 # build->target assembler and hope that it will have the same features
2086 # as the host->target assembler we'll be using.
2087 gcc_cv_gas_major_version=
2088 gcc_cv_gas_minor_version=
2089 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2091 m4_pattern_allow([AS_FOR_TARGET])dnl
2092 AS_VAR_SET_IF(gcc_cv_as,, [
2093 if test -x "$DEFAULT_ASSEMBLER"; then
2094 gcc_cv_as="$DEFAULT_ASSEMBLER"
2095 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
2096 && test -f ../gas/Makefile \
2097 && test x$build = x$host; then
2098 gcc_cv_as=../gas/as-new$build_exeext
2099 elif test -x as$build_exeext; then
2100 # Build using assembler in the current directory.
2101 gcc_cv_as=./as$build_exeext
2102 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2103 gcc_cv_as="$AS_FOR_TARGET"
2105 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2108 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2109 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2110 case "$ORIGINAL_AS_FOR_TARGET" in
2111 ./as | ./as$build_exeext) ;;
2112 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2115 AC_MSG_CHECKING(what assembler to use)
2116 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2117 # Single tree build which includes gas. We want to prefer it
2118 # over whatever linker top-level may have detected, since
2119 # we'll use what we're building after installation anyway.
2120 AC_MSG_RESULT(newly built gas)
2122 _gcc_COMPUTE_GAS_VERSION
2123 in_tree_gas_is_elf=no
2124 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2125 || (grep 'obj_format = multi' ../gas/Makefile \
2126 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2128 in_tree_gas_is_elf=yes
2131 AC_MSG_RESULT($gcc_cv_as)
2137 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2138 [case "${enableval}" in
2144 install_gold_as_default=no
2146 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2147 [case "${enableval}" in
2149 install_gold_as_default=yes
2152 if test x${default_ld} != x; then
2153 install_gold_as_default=yes
2159 AC_MSG_ERROR([invalid --enable-gold argument])
2163 # Identify the linker which will work hand-in-glove with the newly
2164 # built GCC, so that we can examine its features. This is the linker
2165 # which will be driven by the driver program.
2167 # If build != host, and we aren't building gas in-tree, we identify a
2168 # build->target linker and hope that it will have the same features
2169 # as the host->target linker we'll be using.
2170 gcc_cv_gld_major_version=
2171 gcc_cv_gld_minor_version=
2172 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2173 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2174 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2176 AS_VAR_SET_IF(gcc_cv_ld,, [
2177 if test -x "$DEFAULT_LINKER"; then
2178 gcc_cv_ld="$DEFAULT_LINKER"
2179 elif test $install_gold_as_default = yes \
2180 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2181 && test -f ../gold/Makefile \
2182 && test x$build = x$host; then
2183 gcc_cv_ld=../gold/ld-new$build_exeext
2184 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2185 && test -f ../ld/Makefile \
2186 && test x$build = x$host; then
2187 gcc_cv_ld=../ld/ld-new$build_exeext
2188 elif test -x collect-ld$build_exeext; then
2189 # Build using linker in the current directory.
2190 gcc_cv_ld=./collect-ld$build_exeext
2191 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2192 gcc_cv_ld="$LD_FOR_TARGET"
2194 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2197 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2198 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2199 # if the PLUGIN_LD is set ld-new, just have it as ld
2200 # as that is the installed named.
2201 if test x$PLUGIN_LD_SUFFIX = xld-new \
2202 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2205 AC_ARG_WITH(plugin-ld,
2206 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2207 [if test x"$withval" != x; then
2208 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2209 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2211 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2212 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2214 # Check to see if we are using gold instead of ld
2215 AC_MSG_CHECKING(whether we are using gold)
2217 if test x$gcc_cv_ld != x; then
2218 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2219 | grep "GNU gold" > /dev/null; then
2223 AC_MSG_RESULT($ld_is_gold)
2225 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2226 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2227 case "$ORIGINAL_LD_FOR_TARGET" in
2228 ./collect-ld | ./collect-ld$build_exeext) ;;
2229 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2232 AC_MSG_CHECKING(what linker to use)
2233 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2234 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2235 # Single tree build which includes ld. We want to prefer it
2236 # over whatever linker top-level may have detected, since
2237 # we'll use what we're building after installation anyway.
2238 AC_MSG_RESULT(newly built ld)
2240 in_tree_ld_is_elf=no
2241 if (grep 'EMUL = .*elf' ../ld/Makefile \
2242 || grep 'EMUL = .*linux' ../ld/Makefile \
2243 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2244 in_tree_ld_is_elf=yes
2245 elif test "$ld_is_gold" = yes; then
2246 in_tree_ld_is_elf=yes
2248 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
2251 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2252 if test x$gcc_cv_gld_version != x; then
2256 case $gcc_cv_gld_version in
2259 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2262 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2263 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2265 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2266 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2268 AC_MSG_RESULT($gcc_cv_ld)
2270 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2271 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2272 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2275 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2276 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2278 # Figure out what nm we will be using.
2279 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2280 AS_VAR_SET_IF(gcc_cv_nm,, [
2281 if test -f $gcc_cv_binutils_srcdir/configure.in \
2282 && test -f ../binutils/Makefile \
2283 && test x$build = x$host; then
2284 gcc_cv_nm=../binutils/nm-new$build_exeext
2285 elif test -x nm$build_exeext; then
2286 gcc_cv_nm=./nm$build_exeext
2287 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2288 gcc_cv_nm="$NM_FOR_TARGET"
2290 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2293 AC_MSG_CHECKING(what nm to use)
2294 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2295 # Single tree build which includes binutils.
2296 AC_MSG_RESULT(newly built nm)
2299 AC_MSG_RESULT($gcc_cv_nm)
2303 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2304 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2305 case "$ORIGINAL_NM_FOR_TARGET" in
2306 ./nm | ./nm$build_exeext) ;;
2307 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2311 # Figure out what objdump we will be using.
2312 AS_VAR_SET_IF(gcc_cv_objdump,, [
2313 if test -f $gcc_cv_binutils_srcdir/configure.in \
2314 && test -f ../binutils/Makefile \
2315 && test x$build = x$host; then
2316 # Single tree build which includes binutils.
2317 gcc_cv_objdump=../binutils/objdump$build_exeext
2318 elif test -x objdump$build_exeext; then
2319 gcc_cv_objdump=./objdump$build_exeext
2320 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2321 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2323 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2326 AC_MSG_CHECKING(what objdump to use)
2327 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2328 # Single tree build which includes binutils.
2329 AC_MSG_RESULT(newly built objdump)
2330 elif test x$gcc_cv_objdump = x; then
2331 AC_MSG_RESULT(not found)
2333 AC_MSG_RESULT($gcc_cv_objdump)
2336 # Figure out what readelf we will be using.
2337 AS_VAR_SET_IF(gcc_cv_readelf,, [
2338 if test -f $gcc_cv_binutils_srcdir/configure.in \
2339 && test -f ../binutils/Makefile \
2340 && test x$build = x$host; then
2341 # Single tree build which includes binutils.
2342 gcc_cv_readelf=../binutils/readelf$build_exeext
2343 elif test -x readelf$build_exeext; then
2344 gcc_cv_readelf=./readelf$build_exeext
2346 AC_PATH_PROG(gcc_cv_readelf, readelf)
2349 AC_MSG_CHECKING(what readelf to use)
2350 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2351 # Single tree build which includes binutils.
2352 AC_MSG_RESULT(newly built readelf)
2353 elif test x$gcc_cv_readelf = x; then
2354 AC_MSG_RESULT(not found)
2356 AC_MSG_RESULT($gcc_cv_readelf)
2359 # Figure out what assembler alignment features are present.
2360 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2364 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2365 [Define if your assembler supports .balign and .p2align.])])
2367 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2370 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2371 [Define if your assembler supports specifying the maximum number
2372 of bytes to skip when using the GAS .p2align command.])])
2374 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2377 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2378 [Define if your assembler supports .literal16.])])
2380 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2382 [conftest_label1: .word 0
2384 conftest_label2: .word 0
2386 [if test x$gcc_cv_nm != x; then
2387 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2388 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2389 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2391 else gcc_cv_as_subsection_m1=yes
2393 rm -f conftest.nm1 conftest.nm2
2395 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2396 [Define if your assembler supports .subsection and .subsection -1 starts
2397 emitting at the beginning of your section.])])
2399 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2402 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2404 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2406 [ .weakref foobar, barfnot],,
2407 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2409 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2412 .NSUBSPA $CODE$,COMDAT],,
2413 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2415 # .hidden needs to be supported in both the assembler and the linker,
2416 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2417 # This is irritatingly difficult to feature test for; we have to check the
2418 # date string after the version number. If we've got an in-tree
2419 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2421 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2422 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2428 # Darwin as has some visibility support, though with a different syntax.
2429 gcc_cv_as_hidden=yes
2433 # gnu_indirect_function type is an extension proposed at
2434 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2435 # selection of function implementation
2436 AC_ARG_ENABLE(gnu-indirect-function,
2437 [AS_HELP_STRING([--enable-gnu-indirect-function],
2438 [enable the use of the @gnu_indirect_function to glibc systems])],
2439 [case $enable_gnu_indirect_function in
2441 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2442 Valid choices are 'yes' and 'no'.]) ;;
2444 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2446 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2447 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2448 [Define if your system supports gnu indirect functions.])
2452 if test $in_tree_ld != yes ; then
2453 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2454 if echo "$ld_ver" | grep GNU > /dev/null; then
2455 if test x"$ld_is_gold" = xyes; then
2456 # GNU gold --version looks like this:
2458 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2460 # We extract the binutils version which is more familiar and specific
2461 # than the gold version.
2462 ld_vers=`echo $ld_ver | sed -n \
2463 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2465 # GNU ld --version looks like this:
2467 # GNU ld (GNU Binutils) 2.21.51.20110225
2468 ld_vers=`echo $ld_ver | sed -n \
2469 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2471 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2472 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2473 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2474 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2478 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2481 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2482 # /usr/ccs/bin/ld has been configured.
2483 ld_ver=`$gcc_cv_ld -V 2>&1`
2484 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2485 ld_vers=`echo $ld_ver | sed -n \
2486 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2487 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2488 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2496 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2497 [[if test $in_tree_ld = yes ; then
2499 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2500 && test $in_tree_ld_is_elf = yes; then
2501 gcc_cv_ld_hidden=yes
2504 gcc_cv_ld_hidden=yes
2505 if test x"$ld_is_gold" = xyes; then
2507 elif echo "$ld_ver" | grep GNU > /dev/null; then
2509 mmix-knuth-mmixware)
2510 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2514 if test 0"$ld_date" -lt 20020404; then
2515 if test -n "$ld_date"; then
2516 # If there was date string, but was earlier than 2002-04-04, fail
2518 elif test -z "$ld_vers"; then
2519 # If there was no date string nor ld version number, something is wrong
2522 test -z "$ld_vers_patch" && ld_vers_patch=0
2523 if test "$ld_vers_major" -lt 2; then
2525 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2526 gcc_cv_ld_hidden="no"
2527 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2535 # Darwin ld has some visibility support.
2536 gcc_cv_ld_hidden=yes
2538 hppa64*-*-hpux* | ia64*-*-hpux*)
2539 gcc_cv_ld_hidden=yes
2541 *-*-solaris2.1[0-9]*)
2542 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2543 # .symbolic was only added in Solaris 9 12/02.
2544 gcc_cv_ld_hidden=yes
2552 libgcc_visibility=no
2553 AC_SUBST(libgcc_visibility)
2554 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2555 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2556 libgcc_visibility=yes
2557 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2558 [Define if your assembler and linker support .hidden.])
2561 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2562 gcc_cv_ld_ro_rw_mix=unknown
2563 if test $in_tree_ld = yes ; then
2564 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2565 && test $in_tree_ld_is_elf = yes; then
2566 gcc_cv_ld_ro_rw_mix=read-write
2568 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2569 echo '.section myfoosect, "a"' > conftest1.s
2570 echo '.section myfoosect, "aw"' > conftest2.s
2571 echo '.byte 1' >> conftest2.s
2572 echo '.section myfoosect, "a"' > conftest3.s
2573 echo '.byte 0' >> conftest3.s
2574 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2575 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2576 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2577 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2578 conftest2.o conftest3.o > /dev/null 2>&1; then
2579 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2580 | sed -e '/myfoosect/!d' -e N`
2581 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2582 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2583 gcc_cv_ld_ro_rw_mix=read-only
2585 gcc_cv_ld_ro_rw_mix=read-write
2590 rm -f conftest.* conftest[123].*
2593 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2594 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2595 [Define if your linker links a mix of read-only
2596 and read-write sections into a read-write section.])
2598 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2600 gcc_AC_INITFINI_ARRAY
2602 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2603 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2611 [[# GAS versions before 2.11 do not support uleb128,
2612 # despite appearing to.
2613 # ??? There exists an elf-specific test that will crash
2614 # the assembler. Perhaps it's better to figure out whether
2615 # arbitrary sections are supported and try the test.
2616 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2617 if echo "$as_ver" | grep GNU > /dev/null; then
2618 as_vers=`echo $as_ver | sed -n \
2619 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2620 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2621 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2622 if test $as_major -eq 2 && test $as_minor -lt 11
2624 else gcc_cv_as_leb128=yes
2627 [AC_DEFINE(HAVE_AS_LEB128, 1,
2628 [Define if your assembler supports .sleb128 and .uleb128.])])
2630 # Check if we have assembler support for unwind directives.
2631 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2638 .cfi_escape 1, 2, 3, 4, 5
2642 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2643 # read-only and read-write sections, we need to make sure that the
2644 # assembler used emits read-write .eh_frame sections.
2645 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2646 if test "x$gcc_cv_objdump" != x; then
2647 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2648 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2649 gcc_cv_as_cfi_directive=no
2652 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2653 # On Solaris/x86, make sure that GCC and assembler agree on using
2654 # read-only .eh_frame sections for 64-bit.
2655 if test x$gas = xyes; then
2656 as_ix86_64_opt="--64"
2658 as_ix86_64_opt="-xarch=amd64"
2660 if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \
2661 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2662 sed -e /.eh_frame/!d -e N | \
2663 grep READONLY > /dev/null; then
2664 gcc_cv_as_cfi_directive=yes
2666 gcc_cv_as_cfi_directive=no
2670 gcc_cv_as_cfi_directive=yes
2675 # no objdump, err on the side of caution
2676 gcc_cv_as_cfi_directive=no
2679 gcc_cv_as_cfi_directive=yes
2683 gcc_cv_as_cfi_directive=yes
2686 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2687 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2691 .cfi_adjust_cfa_offset 64
2693 .cfi_adjust_cfa_offset 128
2696 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2697 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2698 gcc_cv_as_cfi_advance_working=yes
2702 # no objdump, err on the side of caution
2703 gcc_cv_as_cfi_advance_working=no
2705 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2706 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2707 [`if test $gcc_cv_as_cfi_directive = yes \
2708 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2709 [Define 0/1 if your assembler supports CFI directives.])
2711 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2712 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2713 gcc_cv_as_cfi_personality_directive, ,,
2716 .cfi_personality 0, symbol
2718 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2719 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2720 then echo 1; else echo 0; fi`],
2721 [Define 0/1 if your assembler supports .cfi_personality.])
2723 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2724 gcc_cv_as_cfi_sections_directive, ,,
2726 .cfi_sections .debug_frame, .eh_frame
2730 win32 | pe | cygwin* | mingw32* | uwin*)
2731 # Need to check that we generated the correct relocation for the
2732 # .debug_frame section. This was fixed for binutils 2.21.
2733 gcc_cv_as_cfi_sections_directive=no
2734 if test "x$gcc_cv_objdump" != x; then
2735 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2736 grep secrel > /dev/null; then
2737 gcc_cv_as_cfi_sections_directive=yes
2742 gcc_cv_as_cfi_sections_directive=yes
2745 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2746 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2747 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2748 then echo 1; else echo 0; fi`],
2749 [Define 0/1 if your assembler supports .cfi_sections.])
2751 # GAS versions up to and including 2.11.0 may mis-optimize
2753 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2761 .section .eh_frame,"aw",@progbits
2763 .4byte .LECIE1-.LSCIE1
2777 .4byte .LEFDE1-.LASFDE1
2779 .4byte .LASFDE1-__FRAME_BEGIN__
2787 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2788 cat > conftest.lit <<EOF
2789 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2790 0010 01000000 12000000 18000000 00000000 ................
2791 0020 08000000 04080000 0044 .........D @&t@
2793 cat > conftest.big <<EOF
2794 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2795 0010 00000001 00000012 00000018 00000000 ................
2796 0020 00000008 04000000 0844 .........D @&t@
2798 # If the assembler didn't choke, and we can objdump,
2799 # and we got the correct data, then succeed.
2800 # The text in the here-document typically retains its unix-style line
2801 # endings, while the output of objdump will use host line endings.
2802 # Therefore, use diff -b for the comparisons.
2803 if test x$gcc_cv_objdump != x \
2804 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2805 | tail -3 > conftest.got \
2806 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2807 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2809 gcc_cv_as_eh_frame=yes
2810 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2811 gcc_cv_as_eh_frame=buggy
2813 # Uh oh, what do we do now?
2814 gcc_cv_as_eh_frame=no
2817 if test $gcc_cv_as_eh_frame = buggy; then
2818 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2819 [Define if your assembler mis-optimizes .eh_frame data.])
2822 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2823 [elf,2,12,0], [--fatal-warnings],
2824 [.section .rodata.str, "aMS", @progbits, 1])
2825 if test $gcc_cv_as_shf_merge = no; then
2826 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2827 [elf,2,12,0], [--fatal-warnings],
2828 [.section .rodata.str, "aMS", %progbits, 1])
2830 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2831 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2832 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2834 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2835 gcc_cv_as_comdat_group,
2836 [elf,2,16,0], [--fatal-warnings],
2837 [.section .text,"axG",@progbits,.foo,comdat])
2838 if test $gcc_cv_as_comdat_group = yes; then
2839 gcc_cv_as_comdat_group_percent=no
2840 gcc_cv_as_comdat_group_group=no
2842 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2843 gcc_cv_as_comdat_group_percent,
2844 [elf,2,16,0], [--fatal-warnings],
2845 [.section .text,"axG",%progbits,.foo,comdat])
2846 if test $gcc_cv_as_comdat_group_percent = yes; then
2847 gcc_cv_as_comdat_group_group=no
2850 # Sun as uses a completely different syntax.
2855 .group foo,".text%foo",#comdat
2856 .section ".text%foo", #alloc,#execinstr,#progbits
2861 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2863 .group foo,.text%foo,#comdat
2864 .section .text%foo, "ax", @progbits
2870 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2871 gcc_cv_as_comdat_group_group,
2875 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2876 gcc_cv_as_comdat_group_group=no
2880 if test x"$ld_is_gold" = xyes; then
2882 elif test $in_tree_ld = yes ; then
2884 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2885 && test $in_tree_ld_is_elf = yes; then
2888 elif echo "$ld_ver" | grep GNU > /dev/null; then
2890 if test 0"$ld_date" -lt 20050308; then
2891 if test -n "$ld_date"; then
2892 # If there was date string, but was earlier than 2005-03-08, fail
2894 elif test "$ld_vers_major" -lt 2; then
2896 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2903 *-*-solaris2.1[1-9]*)
2905 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2906 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2909 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2910 # least ld version 1.2267.
2911 if test "$ld_vers_major" -gt 1; then
2913 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2915 elif test "$ld_vers_minor" -ge 2267; then
2920 # Assume linkers other than GNU ld don't support COMDAT group.
2926 # Allow overriding the automatic COMDAT group tests above.
2927 AC_ARG_ENABLE(comdat,
2928 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2929 [comdat_group="$enable_comdat"])
2930 if test $comdat_group = no; then
2931 gcc_cv_as_comdat_group=no
2932 gcc_cv_as_comdat_group_percent=no
2933 gcc_cv_as_comdat_group_group=no
2935 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2936 [`if test $gcc_cv_as_comdat_group = yes \
2937 || test $gcc_cv_as_comdat_group_percent = yes \
2938 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2939 [Define 0/1 if your assembler and linker support COMDAT groups.])
2941 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2942 gcc_cv_as_discriminator,
2946 .loc 1 1 0 discriminator 1],,
2947 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2948 [Define if your assembler supports the .loc discriminator sub-directive.])])
2950 # Thread-local storage - the check is heavily parameterized.
2959 .section ".tdata","awT",@progbits
2962 ldq $27,__tls_get_addr($29) !literal!1
2963 lda $16,foo($29) !tlsgd!1
2964 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2965 ldq $27,__tls_get_addr($29) !literal!2
2966 lda $16,foo($29) !tlsldm!2
2967 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2968 ldq $1,foo($29) !gotdtprel
2969 ldah $2,foo($29) !dtprelhi
2970 lda $3,foo($2) !dtprello
2971 lda $4,foo($29) !dtprel
2972 ldq $1,foo($29) !gottprel
2973 ldah $2,foo($29) !tprelhi
2974 lda $3,foo($2) !tprello
2975 lda $4,foo($29) !tprel'
2978 tls_as_opt=--fatal-warnings
2980 cris-*-*|crisv32-*-*)
2982 .section ".tdata","awT",@progbits
2989 tls_as_opt=--fatal-warnings
2993 .section ".tdata","awT",@progbits
3005 .section ".tdata","awT",@progbits
3009 addil LT%foo-$tls_gdidx$,gp
3010 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3013 addil LT%foo-$tls_ldidx$,gp
3015 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3016 addil LR%foo-$tls_dtpoff$,%ret0
3017 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3019 addil LT%foo-$tls_ieoff$,gp
3020 ldw RT%foo-$tls_ieoff$(%r1),%t2
3023 addil LR%foo-$tls_leoff$,%t1
3024 ldo RR%foo-$tls_leoff$(%r1),%t2'
3027 tls_as_opt=--fatal-warnings
3031 .section ".tdata","awT",%progbits
3042 i[34567]86-*-* | x86_64-*-*)
3044 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3051 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3053 .section .tdata,"awt",@progbits'
3058 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3059 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3063 .section ".tdata","awT",@progbits'
3067 tls_as_opt="--fatal-warnings"
3071 conftest_s="$conftest_s
3075 leal foo@tlsgd(,%ebx,1), %eax
3076 leal foo@tlsldm(%ebx), %eax
3077 leal foo@dtpoff(%eax), %edx
3078 movl foo@gottpoff(%ebx), %eax
3079 subl foo@gottpoff(%ebx), %eax
3080 addl foo@gotntpoff(%ebx), %eax
3081 movl foo@indntpoff, %eax
3082 movl \$foo@tpoff, %eax
3083 subl \$foo@tpoff, %eax
3084 leal foo@ntpoff(%ecx), %eax"
3087 if test x$on_solaris = xyes; then
3089 yes) tls_as_opt="$tls_as_opt --64" ;;
3090 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3093 conftest_s="$conftest_s
3097 leaq foo@tlsgd(%rip), %rdi
3098 leaq foo@tlsld(%rip), %rdi
3099 leaq foo@dtpoff(%rax), %rdx
3100 movq foo@gottpoff(%rip), %rax
3101 movq \$foo@tpoff, %rax"
3107 .section ".tdata","awT",@progbits
3110 addl r16 = @ltoff(@dtpmod(foo#)), gp
3111 addl r17 = @ltoff(@dtprel(foo#)), gp
3112 addl r18 = @ltoff(@tprel(foo#)), gp
3113 addl r19 = @dtprel(foo#), gp
3114 adds r21 = @dtprel(foo#), r13
3115 movl r23 = @dtprel(foo#)
3116 addl r20 = @tprel(foo#), gp
3117 adds r22 = @tprel(foo#), r13
3118 movl r24 = @tprel(foo#)'
3121 tls_as_opt=--fatal-warnings
3125 .section .tdata,"awT",@progbits
3129 addik r5,r20,x@TLSGD
3130 addik r5,r20,x@TLSLDM'
3133 tls_as_opt='--fatal-warnings'
3137 .section .tdata,"awT",@progbits
3141 addiu $4, $28, %tlsgd(x)
3142 addiu $4, $28, %tlsldm(x)
3143 lui $4, %dtprel_hi(x)
3144 addiu $4, $4, %dtprel_lo(x)
3145 lw $4, %gottprel(x)($28)
3146 lui $4, %tprel_hi(x)
3147 addiu $4, $4, %tprel_lo(x)'
3150 tls_as_opt='-32 --fatal-warnings'
3154 .section .tdata,"awT",@progbits
3159 move.l x@TLSGD(%a5),%a0
3160 move.l x@TLSLDM(%a5),%a0
3161 move.l x@TLSLDO(%a5),%a0
3162 move.l x@TLSIE(%a5),%a0
3163 move.l x@TLSLE(%a5),%a0'
3166 tls_as_opt='--fatal-warnings'
3170 .section ".tdata","awT",@progbits'
3173 tls_as_opt="--fatal-warnings"
3177 .section ".tdata","awT",%progbits
3181 add x0, x0, #:tlsgd_lo12:x
3186 tls_as_opt='--fatal-warnings'
3190 .extern __get_tpointer
3208 .section ".tdata","awT",@progbits
3216 addi 3,2,ld0@got@tlsgd
3222 addi 3,2,x1@got@tlsld
3228 addis 9,3,x2@dtprel@ha
3229 addi 9,9,x2@dtprel@l
3232 ld 9,x3@got@dtprel(2)
3238 tls_as_opt="-a64 --fatal-warnings"
3242 .section ".tdata","awT",@progbits
3250 addi 3,31,ld0@got@tlsgd
3252 addi 3,31,x1@got@tlsld
3255 addis 9,3,x2@dtprel@ha
3256 addi 9,9,x2@dtprel@l
3257 lwz 9,x3@got@tprel(31)
3260 addis 9,2,x2@tprel@ha
3261 addi 9,9,x2@tprel@l'
3264 tls_as_opt="-a32 --fatal-warnings"
3268 .section ".tdata","awT",@progbits
3277 l %r1,foo@GOTNTPOFF(%r12)
3278 l %r1,0(%r1):tls_load:foo
3279 bas %r14,0(%r1,%r13):tls_gdcall:foo
3280 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3283 tls_as_opt="-m31 --fatal-warnings"
3287 .section ".tdata","awT",@progbits
3295 lg %r1,foo@GOTNTPOFF(%r12)
3296 larl %r1,foo@INDNTPOFF
3297 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3298 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3301 tls_as_opt="-m64 -Aesame --fatal-warnings"
3303 sh-*-* | sh[34]-*-*)
3305 .section ".tdata","awT",@progbits
3315 tls_as_opt=--fatal-warnings
3319 sparc*-sun-solaris2.*)
3326 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3328 .section ".tdata",#alloc,#write,#tls'
3333 .section ".tdata","awT",@progbits'
3336 tls_as_opt="-32 --fatal-warnings"
3338 conftest_s="$conftest_s
3341 sethi %tgd_hi22(foo), %o0
3342 add %o0, %tgd_lo10(foo), %o1
3343 add %l7, %o1, %o0, %tgd_add(foo)
3344 call __tls_get_addr, %tgd_call(foo)
3345 sethi %tldm_hi22(foo), %l1
3346 add %l1, %tldm_lo10(foo), %l2
3347 add %l7, %l2, %o0, %tldm_add(foo)
3348 call __tls_get_addr, %tldm_call(foo)
3349 sethi %tldo_hix22(foo), %l3
3350 xor %l3, %tldo_lox10(foo), %l4
3351 add %o0, %l4, %l5, %tldo_add(foo)
3352 sethi %tie_hi22(foo), %o3
3353 add %o3, %tie_lo10(foo), %o3
3354 ld [%l7 + %o3], %o2, %tie_ld(foo)
3355 add %g7, %o2, %o4, %tie_add(foo)
3356 sethi %tle_hix22(foo), %l1
3357 xor %l1, %tle_lox10(foo), %o5
3358 ld [%g7 + %o5], %o1"
3362 .section ".tdata","awT",@progbits
3365 addli r0, zero, tls_gd(foo)
3366 auli r0, zero, tls_gd_ha16(foo)
3367 addli r0, r0, tls_gd_lo16(foo)
3369 addli r0, zero, tls_ie(foo)
3370 auli r0, r0, tls_ie_ha16(foo)
3371 addli r0, r0, tls_ie_lo16(foo)'
3374 tls_as_opt="--fatal-warnings"
3378 .section ".tdata","awT",@progbits
3381 shl16insli r0, zero, hw0_last_tls_gd(foo)
3382 shl16insli r0, zero, hw1_last_tls_gd(foo)
3383 shl16insli r0, r0, hw0_tls_gd(foo)
3385 shl16insli r0, zero, hw1_last_tls_ie(foo)
3386 shl16insli r0, r0, hw0_tls_ie(foo)'
3389 tls_as_opt="--fatal-warnings"
3393 .section ".tdata","awT",@progbits
3396 movi a8, foo@TLSFUNC
3397 movi a10, foo@TLSARG
3398 callx8.tls a8, foo@TLSCALL'
3405 if test "x$enable_tls" = xno ; then
3406 : # TLS explicitly disabled.
3407 elif test "x$enable_tls" = xyes ; then
3408 set_have_as_tls=yes # TLS explicitly enabled.
3409 elif test -z "$tls_first_major"; then
3410 : # If we don't have a check, assume no support.
3412 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3413 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3414 [set_have_as_tls=yes])
3416 if test $set_have_as_tls = yes ; then
3417 AC_DEFINE(HAVE_AS_TLS, 1,
3418 [Define if your assembler and linker support thread-local storage.])
3421 # Target-specific assembler checks.
3423 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3424 gcc_cv_ld_static_dynamic=no
3425 gcc_cv_ld_static_option='-Bstatic'
3426 gcc_cv_ld_dynamic_option='-Bdynamic'
3427 if test $in_tree_ld = yes ; then
3428 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3429 gcc_cv_ld_static_dynamic=yes
3431 elif test x$gcc_cv_ld != x; then
3432 # Check if linker supports -Bstatic/-Bdynamic option
3433 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3434 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3435 gcc_cv_ld_static_dynamic=yes
3438 # AIX ld uses -b flags
3439 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3440 gcc_cv_ld_static_dynamic=yes
3441 gcc_cv_ld_static_option="-bstatic"
3442 gcc_cv_ld_dynamic_option="-bdynamic"
3444 # HP-UX ld uses -a flags to select between shared and archive.
3446 if test x"$gnu_ld" = xno; then
3447 gcc_cv_ld_static_dynamic=yes
3448 gcc_cv_ld_static_option="-aarchive_shared"
3449 gcc_cv_ld_dynamic_option="-adefault"
3452 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3454 gcc_cv_ld_static_dynamic=yes
3459 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3460 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3461 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3462 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3463 [Define to the linker option to disable use of shared objects.])
3464 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3465 [Define to the linker option to enable use of shared objects.])
3467 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3469 if test x"$demangler_in_ld" = xyes; then
3470 AC_MSG_CHECKING(linker --demangle support)
3471 gcc_cv_ld_demangle=no
3472 if test $in_tree_ld = yes; then
3473 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3474 gcc_cv_ld_demangle=yes
3476 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3477 # Check if the GNU linker supports --demangle option
3478 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3479 gcc_cv_ld_demangle=yes
3482 if test x"$gcc_cv_ld_demangle" = xyes; then
3483 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3484 [Define if your linker supports --demangle option.])
3486 AC_MSG_RESULT($gcc_cv_ld_demangle)
3489 AC_MSG_CHECKING(linker plugin support)
3491 if test -f liblto_plugin.la; then
3492 save_ld_ver="$ld_ver"
3493 save_ld_vers_major="$ld_vers_major"
3494 save_ld_vers_minor="$ld_vers_minor"
3495 save_ld_is_gold="$ld_is_gold"
3499 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3501 # FIXME: ld_is_gold?
3502 ld_vers_major="$gcc_cv_gld_major_version"
3503 ld_vers_minor="$gcc_cv_gld_minor_version"
3505 # Determine plugin linker version.
3506 # FIXME: Partial duplicate from above, generalize.
3508 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3509 if echo "$ld_ver" | grep GNU > /dev/null; then
3510 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3512 ld_vers=`echo $ld_ver | sed -n \
3513 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3515 ld_vers=`echo $ld_ver | sed -n \
3516 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3518 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3519 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3524 # Determine plugin support.
3525 if echo "$ld_ver" | grep GNU > /dev/null; then
3526 # Require GNU ld or gold 2.21+ for plugin support by default.
3527 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3529 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3530 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3535 ld_ver="$save_ld_ver"
3536 ld_vers_major="$save_ld_vers_major"
3537 ld_vers_minor="$save_ld_vers_minor"
3538 ld_is_gold="$save_ld_is_gold"
3540 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3541 [Define to the level of your linker's plugin support.])
3542 AC_MSG_RESULT($gcc_cv_lto_plugin)
3546 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3547 [-mabi=lp64], [.text],,,)
3548 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3549 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3550 [Define if your assembler supports the -mabi option.])
3552 if test x$with_abi = xilp32; then
3553 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3554 Upgrade the Assembler.])
3556 if test x"$with_multilib_list" = xdefault; then
3557 TM_MULTILIB_CONFIG=lp64
3559 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3560 for aarch64_multilib in ${aarch64_multilibs}; do
3561 case ${aarch64_multilib} in
3563 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3564 Upgrade the Assembler.])
3572 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3573 AC_ARG_ENABLE(fix-cortex-a53-835769,
3575 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3576 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3577 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3578 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3583 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3588 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3589 Valid choices are 'yes' and 'no'.])
3597 # All TARGET_ABI_OSF targets.
3598 alpha*-*-linux* | alpha*-*-*bsd*)
3599 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3600 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3603 extbl $3, $2, $3 !lituse_bytoff!1
3604 ldq $2, a($29) !literal!1
3605 ldq $4, b($29) !literal!2
3606 ldq_u $3, 0($2) !lituse_base!1
3607 ldq $27, f($29) !literal!5
3608 jsr $26, ($27), f !lituse_jsr!5
3609 ldah $29, 0($26) !gpdisp!3
3610 lda $0, c($29) !gprel
3611 ldah $1, d($29) !gprelhigh
3612 lda $1, d($1) !gprellow
3613 lda $29, 0($29) !gpdisp!3],,
3614 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3615 [Define if your assembler supports explicit relocations.])])
3616 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3617 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3620 ldq $27, a($29) !literal!1
3621 jsr $26, ($27), a !lituse_jsrdirect!1],,
3622 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3623 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3627 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3628 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3629 [-no-mul-bug-abort], [.text],,
3630 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3631 [Define if your assembler supports the -no-mul-bug-abort option.])])
3635 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3636 [.register %g2, #scratch],,
3637 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3638 [Define if your assembler supports .register.])])
3640 gcc_GAS_CHECK_FEATURE([@%:@nobits], gcc_cv_as_sparc_nobits,,,
3641 [.section "nobits",#alloc,#write,#nobits
3642 .section "progbits",#alloc,#write,#progbits])
3643 AC_DEFINE_UNQUOTED(HAVE_AS_SPARC_NOBITS,
3644 [`if test $gcc_cv_as_sparc_nobits = yes; then echo 1; else echo 0; fi`],
3645 [Define to 1 if your assembler supports #nobits, 0 otherwise.])
3647 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3649 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3650 [Define if your assembler supports -relax option.])])
3652 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3653 gcc_cv_as_sparc_gotdata_op,,
3660 sethi %gdop_hix22(foo), %g1
3661 xor %g1, %gdop_lox10(foo), %g1
3662 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3663 [if test x$gcc_cv_ld != x \
3664 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3665 if test x$gcc_cv_objdump != x; then
3666 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3667 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3668 gcc_cv_as_sparc_gotdata_op=no
3670 gcc_cv_as_sparc_gotdata_op=yes
3675 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3676 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3678 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3679 gcc_cv_as_sparc_ua_pcrel,,
3687 .uaword %r_disp32(foo)],
3688 [if test x$gcc_cv_ld != x \
3689 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3690 gcc_cv_as_sparc_ua_pcrel=yes
3693 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3694 [Define if your assembler and linker support unaligned PC relative relocs.])
3696 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3697 gcc_cv_as_sparc_ua_pcrel_hidden,,
3702 .uaword %r_disp32(foo)
3703 .byte 0x32, 0x33, 0x34
3708 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3709 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3710 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3711 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3712 if $gcc_cv_objdump -R conftest 2> /dev/null \
3713 | grep 'DISP32' > /dev/null 2>&1; then
3716 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3720 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3721 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3722 ]) # unaligned pcrel relocs
3724 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3725 gcc_cv_as_sparc_offsetable_lo10,,
3728 or %g1, %lo(ab) + 12, %g1
3729 or %g1, %lo(ab + 12), %g1],
3730 [if test x$gcc_cv_objdump != x \
3731 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3732 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3733 gcc_cv_as_sparc_offsetable_lo10=yes
3735 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3736 [Define if your assembler supports offsetable %lo().])])
3738 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3739 gcc_cv_as_sparc_fmaf,,
3742 .register %g2, #scratch
3743 .register %g3, #scratch
3745 fmaddd %f0, %f2, %f4, %f6
3746 addxccc %g1, %g2, %g3
3747 fsrl32 %f2, %f4, %f8
3748 fnaddd %f10, %f12, %f14],,
3749 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3750 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3752 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3753 gcc_cv_as_sparc_sparc4,,
3756 .register %g2, #scratch
3757 .register %g3, #scratch
3760 1: cwbneg %g2, %g3, 1f
3763 aes_kexpand0 %f4, %f6, %f8
3764 des_round %f38, %f40, %f42, %f44
3765 camellia_f %f54, %f56, %f58, %f60
3766 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3767 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3768 [Define if your assembler supports SPARC4 instructions.])])
3770 gcc_GAS_CHECK_FEATURE([LEON instructions],
3771 gcc_cv_as_sparc_leon,,
3774 .register %g2, #scratch
3775 .register %g3, #scratch
3779 casa [[%g2]] 0xb, %g3, %g1],,
3780 [AC_DEFINE(HAVE_AS_LEON, 1,
3781 [Define if your assembler supports LEON instructions.])])
3785 i[34567]86-*-* | x86_64-*-*)
3789 # Full C++ conformance when using a shared libstdc++-v3 requires some
3790 # support from the Cygwin DLL, which in more recent versions exports
3791 # wrappers to aid in interposing and redirecting operators new, delete,
3792 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3793 # are configuring for a version of Cygwin that exports the wrappers.
3794 if test x$host = x$target && test x$host_cpu = xi686; then
3795 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3797 # Can't check presence of libc functions during cross-compile, so
3798 # we just have to assume we're building for an up-to-date target.
3799 gcc_ac_cygwin_dll_wrappers=yes
3801 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3802 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3803 [Define if you want to generate code by default that assumes that the
3804 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3807 cygwin* | pe | mingw32* | interix*)
3808 # Recent binutils allows the three-operand form of ".comm" on PE. This
3809 # definition is used unconditionally to initialise the default state of
3810 # the target option variable that governs usage of the feature.
3811 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3812 [2,19,52],,[.comm foo,1,32])
3813 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3814 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3815 [Define if your assembler supports specifying the alignment
3816 of objects allocated using the GAS .comm command.])
3817 # Used for DWARF 2 in PE
3818 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3819 gcc_cv_as_ix86_pe_secrel32,
3825 [if test x$gcc_cv_ld != x \
3826 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3827 gcc_cv_as_ix86_pe_secrel32=yes
3830 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3831 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3832 # Test if the assembler supports the extended form of the .section
3833 # directive that specifies section alignment. LTO support uses this,
3834 # but normally only after installation, so we warn but don't fail the
3835 # configure if LTO is enabled but the assembler does not support it.
3836 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3837 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3838 if test x$gcc_cv_as_section_has_align != xyes; then
3839 case ",$enable_languages," in
3841 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3848 # Test if the assembler supports the section flag 'e' for specifying
3849 # an excluded section.
3850 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3851 [2,22,51], [--fatal-warnings],
3854 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3855 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3856 [Define if your assembler supports specifying the section flag e.])
3858 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3859 gcc_cv_as_ix86_filds,,,
3860 [filds mem; fists mem],,
3861 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3862 [Define if your assembler uses filds and fists mnemonics.])])
3864 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3865 gcc_cv_as_ix86_fildq,,,
3866 [fildq mem; fistpq mem],,
3867 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3868 [Define if your assembler uses fildq and fistq mnemonics.])])
3870 gcc_GAS_CHECK_FEATURE([cmov syntax],
3871 gcc_cv_as_ix86_cmov_sun_syntax,,,
3872 [cmovl.l %edx, %eax],,
3873 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3874 [Define if your assembler supports the Sun syntax for cmov.])])
3876 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3877 gcc_cv_as_ix86_ffreep,,,
3879 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3880 [Define if your assembler supports the ffreep mnemonic.])])
3882 gcc_GAS_CHECK_FEATURE([.quad directive],
3883 gcc_cv_as_ix86_quad,,,
3885 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3886 [Define if your assembler supports the .quad directive.])])
3888 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3889 gcc_cv_as_ix86_sahf,,,
3892 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3893 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3895 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
3896 gcc_cv_as_ix86_interunit_movq,,,
3900 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
3901 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
3902 [Define if your assembler supports interunit movq mnemonic.])
3904 gcc_GAS_CHECK_FEATURE([hle prefixes],
3905 gcc_cv_as_ix86_hle,,,
3906 [lock xacquire cmpxchg %esi, (%ecx)],,
3907 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3908 [Define if your assembler supports HLE prefixes.])])
3910 gcc_GAS_CHECK_FEATURE([swap suffix],
3911 gcc_cv_as_ix86_swap,,,
3912 [movl.s %esp, %ebp],,
3913 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3914 [Define if your assembler supports the swap suffix.])])
3916 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3917 gcc_cv_as_ix86_diff_sect_delta,,,
3925 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3926 [Define if your assembler supports the subtraction of symbols in different sections.])])
3928 # These two are used unconditionally by i386.[ch]; it is to be defined
3929 # to 1 if the feature is present, 0 otherwise.
3930 as_ix86_gotoff_in_data_opt=
3931 if test x$gas = xyes; then
3932 as_ix86_gotoff_in_data_opt="--32"
3934 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3935 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
3936 [$as_ix86_gotoff_in_data_opt],
3942 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3943 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3944 [Define true if the assembler supports '.long foo@GOTOFF'.])
3946 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3947 gcc_cv_as_ix86_rep_lock_prefix,,,
3953 lock addl %edi, (%eax,%esi)
3954 lock orl $0, (%esp)],,
3955 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3956 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3958 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
3959 gcc_cv_as_ix86_ud2,,,
3961 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
3962 [Define if your assembler supports the 'ud2' mnemonic.])])
3964 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3965 gcc_cv_as_ix86_tlsgdplt,,,
3966 [call tls_gd@tlsgdplt],
3967 [if test x$gcc_cv_ld != x \
3968 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3969 gcc_cv_as_ix86_tlsgdplt=yes
3972 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3973 [Define if your assembler and linker support @tlsgdplt.])])
3976 .section .tdata,"aw'$tls_section_flag'",@progbits
3978 .section .text,"ax",@progbits
3979 call tls_ld@tlsldmplt'
3980 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3981 gcc_cv_as_ix86_tlsldmplt,,,
3983 [if test x$gcc_cv_ld != x \
3984 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3985 gcc_cv_as_ix86_tlsldmplt=yes
3988 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
3989 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
3990 [Define to 1 if your assembler and linker support @tlsldmplt.])
3992 # Enforce 32-bit output with gas and gld.
3993 if test x$gas = xyes; then
3994 as_ix86_tls_ldm_opt="--32"
3996 if echo "$ld_ver" | grep GNU > /dev/null; then
3997 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
3998 ld_ix86_tls_ldm_opt="-melf_i386_sol2"
4000 ld_ix86_tls_ldm_opt="-melf_i386"
4004 .section .text,"ax",@progbits
4006 .type _start, @function
4008 leal value@tlsldm(%ebx), %eax
4009 call ___tls_get_addr@plt
4011 .section .tdata,"aw'$tls_section_flag'",@progbits
4012 .type value, @object
4014 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4015 gcc_cv_as_ix86_tlsldm,,
4016 [$as_ix86_tls_ldm_opt],
4018 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4019 && $gcc_cv_ld $ld_ix86_tls_ldm_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4020 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4021 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4022 gcc_cv_as_ix86_tlsldm=yes
4026 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4027 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4028 [Define to 1 if your assembler and linker support @tlsldm.])
4033 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4034 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4036 addl r15 = @ltoffx(x#), gp
4038 ld8.mov r16 = [[r15]], x#],,
4039 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4040 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4046 *-*-aix*) conftest_s=' .machine "pwr5"
4050 gcc_GAS_CHECK_FEATURE([.machine directive support],
4051 gcc_cv_as_machine_directive,,,
4052 [ .machine ppc7400])
4053 if test x$gcc_cv_as_machine_directive != xyes; then
4054 echo "*** This target requires an assembler supporting \".machine\"" >&2
4055 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4056 test x$build = x$target && exit 1
4060 *) conftest_s=' .machine power4
4065 gcc_GAS_CHECK_FEATURE([mfcr field support],
4066 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4068 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4069 [Define if your assembler supports mfcr field.])])
4072 *-*-aix*) conftest_s=' .machine "pwr5"
4075 *) conftest_s=' .machine power5
4080 gcc_GAS_CHECK_FEATURE([popcntb support],
4081 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4083 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4084 [Define if your assembler supports popcntb field.])])
4087 *-*-aix*) conftest_s=' .machine "pwr5x"
4090 *) conftest_s=' .machine power5
4095 gcc_GAS_CHECK_FEATURE([fp round support],
4096 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4098 [AC_DEFINE(HAVE_AS_FPRND, 1,
4099 [Define if your assembler supports fprnd.])])
4102 *-*-aix*) conftest_s=' .machine "pwr6"
4105 *) conftest_s=' .machine power6
4110 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4111 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4113 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4114 [Define if your assembler supports mffgpr and mftgpr.])])
4117 *-*-aix*) conftest_s=' .csect .text[[PR]]
4119 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4123 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4124 *) conftest_s=' .text
4126 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4129 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4130 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4132 [AC_DEFINE(HAVE_AS_REL16, 1,
4133 [Define if your assembler supports R_PPC_REL16 relocs.])])
4136 *-*-aix*) conftest_s=' .machine "pwr6"
4139 *) conftest_s=' .machine power6
4144 gcc_GAS_CHECK_FEATURE([compare bytes support],
4145 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4147 [AC_DEFINE(HAVE_AS_CMPB, 1,
4148 [Define if your assembler supports cmpb.])])
4151 *-*-aix*) conftest_s=' .machine "pwr6"
4154 *) conftest_s=' .machine power6
4159 gcc_GAS_CHECK_FEATURE([decimal float support],
4160 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4162 [AC_DEFINE(HAVE_AS_DFP, 1,
4163 [Define if your assembler supports DFP instructions.])])
4166 *-*-aix*) conftest_s=' .machine "pwr7"
4169 *) conftest_s=' .machine power7
4174 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4175 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4177 [AC_DEFINE(HAVE_AS_VSX, 1,
4178 [Define if your assembler supports VSX instructions.])])
4181 *-*-aix*) conftest_s=' .machine "pwr7"
4184 *) conftest_s=' .machine power7
4189 gcc_GAS_CHECK_FEATURE([popcntd support],
4190 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4192 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4193 [Define if your assembler supports POPCNTD instructions.])])
4196 *-*-aix*) conftest_s=' .machine "pwr8"
4197 .csect .text[[PR]]';;
4198 *) conftest_s=' .machine power8
4202 gcc_GAS_CHECK_FEATURE([power8 support],
4203 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4205 [AC_DEFINE(HAVE_AS_POWER8, 1,
4206 [Define if your assembler supports POWER8 instructions.])])
4209 *-*-aix*) conftest_s=' .csect .text[[PR]]
4211 *) conftest_s=' .text
4215 gcc_GAS_CHECK_FEATURE([lwsync support],
4216 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4218 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4219 [Define if your assembler supports LWSYNC instructions.])])
4222 *-*-aix*) conftest_s=' .machine "476"
4225 *) conftest_s=' .machine "476"
4230 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4231 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4233 [AC_DEFINE(HAVE_AS_DCI, 1,
4234 [Define if your assembler supports the DCI/ICI instructions.])])
4236 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4237 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4238 [.gnu_attribute 4,1],,
4239 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4240 [Define if your assembler supports .gnu_attribute.])])
4242 gcc_GAS_CHECK_FEATURE([tls marker support],
4243 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4244 [ bl __tls_get_addr(x@tlsgd)],,
4245 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4246 [Define if your assembler supports arg info for __tls_get_addr.])])
4250 gcc_GAS_CHECK_FEATURE([.ref support],
4251 gcc_cv_as_aix_ref, [2,21,0],,
4252 [ .csect stuff[[rw]]
4258 [AC_DEFINE(HAVE_AS_REF, 1,
4259 [Define if your assembler supports .ref])])
4265 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4266 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4267 [ lw $4,%gp_rel(foo)($4)],,
4268 [if test x$target_cpu_default = x
4269 then target_cpu_default=MASK_EXPLICIT_RELOCS
4270 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4272 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4273 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4274 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4275 [Define if the assembler understands -mno-shared.])])
4277 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4278 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4279 [.gnu_attribute 4,1],,
4280 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4281 [Define if your assembler supports .gnu_attribute.])])
4283 gcc_GAS_CHECK_FEATURE([.module support],
4284 gcc_cv_as_mips_dot_module,,[-32],
4287 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4288 [Define if your assembler supports .module.])])
4289 if test x$gcc_cv_as_mips_dot_module = xno \
4290 && test x$with_fp_32 != x; then
4292 [Requesting --with-fp-32= requires assembler support for .module.])
4295 gcc_GAS_CHECK_FEATURE([.micromips support],
4296 gcc_cv_as_micromips_support,,[--fatal-warnings],
4298 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4299 [Define if your assembler supports the .set micromips directive])])
4301 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4302 gcc_cv_as_mips_dtprelword, [2,18,0],,
4303 [.section .tdata,"awT",@progbits
4307 .dtprelword x+0x8000],,
4308 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4309 [Define if your assembler supports .dtprelword.])])
4311 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4312 gcc_cv_as_mips_dspr1_mult,,,
4322 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4323 [Define if your assembler supports DSPR1 mult.])])
4325 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4326 gcc_cv_as_ld_jalr_reloc=no
4327 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4328 if test $in_tree_ld = yes ; then
4329 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4330 && test $in_tree_ld_is_elf = yes; then
4331 gcc_cv_as_ld_jalr_reloc=yes
4333 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4334 echo ' .ent x' > conftest.s
4335 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4336 echo ' lw $25,%call16(y)($28)' >> conftest.s
4337 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4338 echo '1: jalr $25' >> conftest.s
4339 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4340 echo '1: jalr $25' >> conftest.s
4341 echo ' .end x' >> conftest.s
4342 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4343 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4344 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4345 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4346 gcc_cv_as_ld_jalr_reloc=yes
4352 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4353 if test x$target_cpu_default = x; then
4354 target_cpu_default=MASK_RELAX_PIC_CALLS
4356 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4359 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4361 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4362 [gcc_cv_ld_mips_personality_relaxation],
4363 [gcc_cv_ld_mips_personality_relaxation=no
4364 if test $in_tree_ld = yes ; then
4365 if test "$gcc_cv_gld_major_version" -eq 2 \
4366 -a "$gcc_cv_gld_minor_version" -ge 21 \
4367 -o "$gcc_cv_gld_major_version" -gt 2; then
4368 gcc_cv_ld_mips_personality_relaxation=yes
4370 elif test x$gcc_cv_as != x \
4371 -a x$gcc_cv_ld != x \
4372 -a x$gcc_cv_readelf != x ; then
4373 cat > conftest.s <<EOF
4375 .cfi_personality 0x80,indirect_ptr
4382 .section .data,"aw",@progbits
4386 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4387 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4388 if $gcc_cv_readelf -d conftest 2>&1 \
4389 | grep TEXTREL > /dev/null 2>&1; then
4391 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4392 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4395 gcc_cv_ld_mips_personality_relaxation=yes
4399 rm -f conftest.s conftest.o conftest])
4400 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4401 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4402 [Define if your linker can relax absolute .eh_frame personality
4403 pointers into PC-relative form.])
4406 gcc_GAS_CHECK_FEATURE([-mnan= support],
4407 gcc_cv_as_mips_nan,,
4409 [AC_DEFINE(HAVE_AS_NAN, 1,
4410 [Define if the assembler understands -mnan=.])])
4411 if test x$gcc_cv_as_mips_nan = xno \
4412 && test x$with_nan != x; then
4414 [Requesting --with-nan= requires assembler support for -mnan=])
4419 # Mips and HP-UX need the GNU assembler.
4420 # Linux on IA64 might be able to use the Intel assembler.
4423 mips*-*-* | *-*-hpux* )
4424 if test x$gas_flag = xyes \
4425 || test x"$host" != x"$build" \
4426 || test ! -x "$gcc_cv_as" \
4427 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4430 echo "*** This configuration requires the GNU assembler" >&2
4436 # ??? Not all targets support dwarf2 debug_line, even within a version
4437 # of gas. Moreover, we need to emit a valid instruction to trigger any
4438 # info to the output file. So, as supported targets are added to gas 2.11,
4439 # add some instruction here to (also) show we expect this might work.
4440 # ??? Once 2.11 is released, probably need to add first known working
4441 # version to the per-target configury.
4443 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4444 | mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
4445 | xstormy16 | xtensa)
4455 if test x"$insn" != x; then
4457 .file 1 \"conftest.s\"
4460 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4461 gcc_cv_as_dwarf2_debug_line,
4462 [elf,2,11,0],, [$conftest_s],
4463 [if test x$gcc_cv_objdump != x \
4464 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4465 | grep debug_line > /dev/null 2>&1; then
4466 gcc_cv_as_dwarf2_debug_line=yes
4469 # The .debug_line file table must be in the exact order that
4470 # we specified the files, since these indices are also used
4471 # by DW_AT_decl_file. Approximate this test by testing if
4472 # the assembler bitches if the same index is assigned twice.
4473 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4474 gcc_cv_as_dwarf2_file_buggy,,,
4478 if test $gcc_cv_as_dwarf2_debug_line = yes \
4479 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4480 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4481 [Define if your assembler supports dwarf2 .file/.loc directives,
4482 and preserves file table indices exactly as given.])
4485 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4486 gcc_cv_as_gdwarf2_flag,
4487 [elf,2,11,0], [--gdwarf2], [$insn],,
4488 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4489 [Define if your assembler supports the --gdwarf2 option.])])
4491 gcc_GAS_CHECK_FEATURE([--gstabs option],
4492 gcc_cv_as_gstabs_flag,
4493 [elf,2,11,0], [--gstabs], [$insn],,
4494 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4495 [Define if your assembler supports the --gstabs option.])])
4497 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4498 gcc_cv_as_debug_prefix_map_flag,
4499 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4500 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4501 [Define if your assembler supports the --debug-prefix-map option.])])
4504 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4505 gcc_cv_as_compress_debug,,[--compress-debug-sections],,
4506 [# gas compiled without zlib cannot compress debug sections and warns
4507 # about it, but still exits successfully. So check for this, too.
4508 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4510 gcc_cv_as_compress_debug=0
4511 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4513 gcc_cv_as_compress_debug=1
4514 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4515 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4517 gcc_cv_as_compress_debug=0
4518 # FIXME: Future gas versions will support ELF gABI style via
4519 # --compress-debug-sections[=type].
4521 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4522 [Define to the level of your assembler's compressed debug section support.])
4523 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4524 [Define to the assembler option to enable compressed debug sections.])
4525 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4526 [Define to the assembler option to disable compressed debug sections.])
4528 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4531 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4532 [Define if your assembler supports .lcomm with an alignment field.])])
4534 if test x$with_sysroot = x && test x$host = x$target \
4535 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4536 && test "$prefix" != "NONE"; then
4537 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4538 [Define to PREFIX/include if cpp should also search that directory.])
4541 # Determine the version of glibc, if any, used on the target.
4542 AC_MSG_CHECKING([for target glibc version])
4543 AC_ARG_WITH([glibc-version],
4544 [AS_HELP_STRING([--with-glibc-version=M.N],
4545 [assume GCC used with glibc version M.N or later])], [
4546 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4547 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4548 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4550 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4552 glibc_version_major=0
4553 glibc_version_minor=0
4554 [if test -f $target_header_dir/features.h \
4555 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4556 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4557 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4558 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4560 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4561 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
4562 [GNU C Library major version number used on the target, or 0.])
4563 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
4564 [GNU C Library minor version number used on the target, or 0.])
4566 AC_ARG_ENABLE(gnu-unique-object,
4567 [AS_HELP_STRING([--enable-gnu-unique-object],
4568 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4569 [case $enable_gnu_unique_object in
4571 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4572 Valid choices are 'yes' and 'no'.]) ;;
4574 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4576 [.type foo, '$target_type_format_char'gnu_unique_object],,
4577 # We need to unquote above to to use the definition from config.gcc.
4578 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4579 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4581 if test x$enable_gnu_unique_object = xyes; then
4582 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4583 [Define if your assembler supports @gnu_unique_object.])
4586 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4587 [gcc_cv_as_line_zero],
4588 [gcc_cv_as_line_zero=no
4589 if test $in_tree_gas = yes; then
4590 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4591 elif test "x$gcc_cv_as" != x; then
4592 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4593 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4594 test "x`cat conftest.out`" = x
4596 gcc_cv_as_line_zero=yes
4598 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4599 cat conftest.s >&AS_MESSAGE_LOG_FD
4600 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4601 cat conftest.out >&AS_MESSAGE_LOG_FD
4603 rm -f conftest.o conftest.s conftest.out
4605 if test "x$gcc_cv_as_line_zero" = xyes; then
4606 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4607 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4610 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4611 gcc_cv_ld_eh_frame_hdr=no
4612 if test $in_tree_ld = yes ; then
4613 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4614 && test $in_tree_ld_is_elf = yes; then
4615 gcc_cv_ld_eh_frame_hdr=yes
4617 elif test x$gcc_cv_ld != x; then
4618 if echo "$ld_ver" | grep GNU > /dev/null; then
4619 # Check if linker supports --eh-frame-hdr option
4620 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4621 gcc_cv_ld_eh_frame_hdr=yes
4626 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4627 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4628 gcc_cv_ld_eh_frame_hdr=yes
4634 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4635 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4636 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4637 [Define if your linker supports .eh_frame_hdr.])
4639 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4641 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4642 gcc_cv_ld_eh_frame_ciev3=no
4643 if test $in_tree_ld = yes ; then
4644 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4645 && test $in_tree_ld_is_elf = yes; then
4646 gcc_cv_ld_eh_frame_ciev3=yes
4648 elif test x$gcc_cv_ld != x; then
4649 if echo "$ld_ver" | grep GNU > /dev/null; then
4650 gcc_cv_ld_eh_frame_ciev3=yes
4651 if test 0"$ld_date" -lt 20040513; then
4652 if test -n "$ld_date"; then
4653 # If there was date string, but was earlier than 2004-05-13, fail
4654 gcc_cv_ld_eh_frame_ciev3=no
4655 elif test "$ld_vers_major" -lt 2; then
4656 gcc_cv_ld_eh_frame_ciev3=no
4657 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4658 gcc_cv_ld_eh_frame_ciev3=no
4664 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4665 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4666 gcc_cv_ld_eh_frame_ciev3=yes
4672 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4673 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4674 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4675 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4677 AC_MSG_CHECKING(linker position independent executable support)
4679 if test $in_tree_ld = yes ; then
4680 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4681 && test $in_tree_ld_is_elf = yes; then
4684 elif test x$gcc_cv_ld != x; then
4685 # Check if linker supports -pie option
4686 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4690 if test x"$gcc_cv_ld_pie" = xyes; then
4691 AC_DEFINE(HAVE_LD_PIE, 1,
4692 [Define if your linker supports -pie option.])
4694 AC_MSG_RESULT($gcc_cv_ld_pie)
4696 AC_MSG_CHECKING(linker PIE support with copy reloc)
4697 gcc_cv_ld_pie_copyreloc=no
4698 if test $gcc_cv_ld_pie = yes ; then
4699 if test $in_tree_ld = yes ; then
4700 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
4701 gcc_cv_ld_pie_copyreloc=yes
4703 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4704 # Check if linker supports -pie option with copy reloc
4706 i?86-*-linux* | x86_64-*-linux*)
4707 cat > conftest1.s <<EOF
4710 .type a_glob, @object
4715 cat > conftest2.s <<EOF
4718 .type main, @function
4720 movl %eax, a_glob(%rip)
4723 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4724 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
4725 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4726 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
4727 gcc_cv_ld_pie_copyreloc=yes
4729 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
4734 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
4735 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
4736 [Define 0/1 if your linker supports -pie option with copy reloc.])
4737 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
4739 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4740 gcc_cv_ld_eh_gc_sections=no
4741 if test $in_tree_ld = yes ; then
4742 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4743 && test $in_tree_ld_is_elf = yes; then
4744 gcc_cv_ld_eh_gc_sections=yes
4746 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4747 cat > conftest.s <<EOF
4750 .type _start, @function
4753 .size _start, .-_start
4754 .section .text.foo,"ax",@progbits
4755 .type foo, @function
4759 .section .gcc_except_table.foo,"a",@progbits
4762 .section .eh_frame,"a",@progbits
4765 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4766 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4767 | grep "gc-sections option ignored" > /dev/null; then
4768 gcc_cv_ld_eh_gc_sections=no
4769 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4770 | grep gcc_except_table > /dev/null; then
4771 gcc_cv_ld_eh_gc_sections=yes
4772 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4773 if test x$gcc_cv_as_comdat_group != xyes; then
4774 gcc_cv_ld_eh_gc_sections=no
4775 cat > conftest.s <<EOF
4778 .type _start, @function
4781 .size _start, .-_start
4782 .section .gnu.linkonce.t.foo,"ax",@progbits
4783 .type foo, @function
4787 .section .gcc_except_table.foo,"a",@progbits
4790 .section .eh_frame,"a",@progbits
4793 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4794 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4795 | grep "gc-sections option ignored" > /dev/null; then
4796 gcc_cv_ld_eh_gc_sections=no
4797 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4798 | grep gcc_except_table > /dev/null; then
4799 gcc_cv_ld_eh_gc_sections=yes
4805 rm -f conftest.s conftest.o conftest
4809 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4810 gcc_cv_ld_eh_gc_sections=no
4813 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4814 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4815 [Define if your linker supports garbage collection of
4816 sections in presence of EH frames.])
4818 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4820 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4821 gcc_cv_ld_eh_gc_sections_bug=no
4822 if test $in_tree_ld = yes ; then
4823 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4824 && test $in_tree_ld_is_elf = yes; then
4825 gcc_cv_ld_eh_gc_sections_bug=yes
4827 elif test x$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
4828 gcc_cv_ld_eh_gc_sections_bug=yes
4829 cat > conftest.s <<EOF
4832 .type _start, @function
4835 .size _start, .-_start
4836 .section .text.startup.foo,"ax",@progbits
4837 .type foo, @function
4841 .section .gcc_except_table.foo,"a",@progbits
4844 .section .eh_frame,"a",@progbits
4847 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4848 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4849 | grep "gc-sections option ignored" > /dev/null; then
4851 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4852 | grep gcc_except_table > /dev/null; then
4853 gcc_cv_ld_eh_gc_sections_bug=no
4856 rm -f conftest.s conftest.o conftest
4858 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4859 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4860 [Define if your linker has buggy garbage collection of
4861 sections support when .text.startup.foo like sections are used.])
4863 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4865 AC_MSG_CHECKING(linker for compressed debug sections)
4866 # gold/gld support compressed debug sections since binutils 2.19/2.21
4867 if test $in_tree_ld = yes ; then
4868 gcc_cv_ld_compress_debug=0
4869 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
4870 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
4871 gcc_cv_ld_compress_debug=2
4872 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
4873 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
4874 && test $in_tree_ld_is_elf = yes; then
4875 gcc_cv_ld_compress_debug=1
4877 elif echo "$ld_ver" | grep GNU > /dev/null; then
4878 gcc_cv_ld_compress_debug=1
4879 if test 0"$ld_date" -lt 20050308; then
4880 if test -n "$ld_date"; then
4881 # If there was date string, but was earlier than 2005-03-08, fail
4882 gcc_cv_ld_compress_debug=0
4883 elif test "$ld_vers_major" -lt 2; then
4884 gcc_cv_ld_compress_debug=0
4885 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
4886 gcc_cv_ld_compress_debug=0
4889 if test $ld_is_gold = yes; then
4890 gcc_cv_ld_compress_debug=2
4891 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
4897 # Introduced in Solaris 11.2.
4898 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
4899 gcc_cv_ld_compress_debug=3
4900 gcc_cv_ld_compress_debug_option="-z compress-sections"
4902 gcc_cv_ld_compress_debug=0
4906 # Assume linkers other than GNU ld don't support compessed debug
4908 gcc_cv_ld_compress_debug=0
4913 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
4914 [Define to the level of your linker's compressed debug section support.])
4915 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
4916 [Define to the linker option to enable compressed debug sections.])
4917 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
4923 AC_CACHE_CHECK(linker --as-needed support,
4924 gcc_cv_ld_as_needed,
4925 [gcc_cv_ld_as_needed=no
4926 gcc_cv_ld_as_needed_option='--as-needed'
4927 gcc_cv_ld_no_as_needed_option='--no-as-needed'
4928 if test $in_tree_ld = yes ; then
4929 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4930 && test $in_tree_ld_is_elf = yes; then
4931 gcc_cv_ld_as_needed=yes
4933 elif test x$gcc_cv_ld != x; then
4934 # Check if linker supports --as-needed and --no-as-needed options
4935 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4936 gcc_cv_ld_as_needed=yes
4939 # Solaris 2 ld always supports -z ignore/-z record.
4941 gcc_cv_ld_as_needed=yes
4942 gcc_cv_ld_as_needed_option="-z ignore"
4943 gcc_cv_ld_no_as_needed_option="-z record"
4948 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
4949 # dl_iterate_phdr, i.e. since Solaris 11.
4951 *-*-solaris2.1[[1-9]]*)
4953 i?86-*-* | x86_64-*-*)
4954 if echo "$ld_ver" | grep GNU > /dev/null; then
4955 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
4956 gcc_cv_ld_as_needed=no
4962 gcc_cv_ld_as_needed=no
4966 if test x"$gcc_cv_ld_as_needed" = xyes; then
4967 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4968 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
4969 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
4970 [Define to the linker option to ignore unused dependencies.])
4971 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
4972 [Define to the linker option to keep unused dependencies.])
4975 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
4976 saved_LDFLAGS="$LDFLAGS"
4977 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
4978 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
4979 AC_LINK_IFELSE([int main(void) {return 0;}],
4980 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
4982 LDFLAGS="$saved_LDFLAGS"
4983 if test "x$gcc_cv_ld_clearcap" = xyes; then
4984 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
4985 [Define if the linker supports clearing hardware capabilities via mapfile.])
4986 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
4988 AC_MSG_RESULT($gcc_cv_ld_clearcap)
4990 case "$target:$tm_file" in
4991 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4994 emul_name="-melf64lppc"
4997 emul_name="-melf64ppc"
5000 emul_name="-melf64ppc_fbsd"
5003 AC_CACHE_CHECK(linker support for omitting dot symbols,
5004 gcc_cv_ld_no_dot_syms,
5005 [gcc_cv_ld_no_dot_syms=no
5006 if test x"$ld_is_gold" = xyes; then
5007 gcc_cv_ld_no_dot_syms=yes
5008 elif test $in_tree_ld = yes ; then
5009 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5010 gcc_cv_ld_no_dot_syms=yes
5012 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5013 cat > conftest1.s <<EOF
5017 cat > conftest2.s <<EOF
5018 .section ".opd","aw"
5023 .quad .LEfoo,.TOC.@tocbase,0
5029 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5030 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5031 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5032 gcc_cv_ld_no_dot_syms=yes
5034 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5037 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5038 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5039 [Define if your PowerPC64 linker only needs function descriptor syms.])
5042 AC_CACHE_CHECK(linker large toc support,
5043 gcc_cv_ld_large_toc,
5044 [gcc_cv_ld_large_toc=no
5045 if test x"$ld_is_gold" = xyes; then
5046 gcc_cv_ld_large_toc=yes
5047 elif test $in_tree_ld = yes ; then
5048 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5049 gcc_cv_ld_large_toc=yes
5051 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5052 cat > conftest.s <<EOF
5053 .section ".tbss","awT",@nobits
5059 addis 9,13,ie0@got@tprel@ha
5060 ld 9,ie0@got@tprel@l(9)
5062 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5063 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5064 gcc_cv_ld_large_toc=yes
5066 rm -f conftest conftest.o conftest.s
5069 if test x"$gcc_cv_ld_large_toc" = xyes; then
5070 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5071 [Define if your PowerPC64 linker supports a large TOC.])
5078 AC_CACHE_CHECK(linker large toc support,
5079 gcc_cv_ld_large_toc,
5080 [gcc_cv_ld_large_toc=no
5081 if test x$gcc_cv_as != x ; then
5082 cat > conftest.s <<EOF
5092 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5093 gcc_cv_ld_large_toc=yes
5095 rm -f conftest conftest.o conftest.s
5098 if test x"$gcc_cv_ld_large_toc" = xyes; then
5099 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5100 [Define if your PowerPC64 linker supports a large TOC.])
5105 AC_CACHE_CHECK(linker --build-id support,
5107 [gcc_cv_ld_buildid=no
5108 if test $in_tree_ld = yes ; then
5109 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5110 "$gcc_cv_gld_minor_version" -ge 18 -o \
5111 "$gcc_cv_gld_major_version" -gt 2 \
5112 && test $in_tree_ld_is_elf = yes; then
5113 gcc_cv_ld_buildid=yes
5115 elif test x$gcc_cv_ld != x; then
5116 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
5117 gcc_cv_ld_buildid=yes
5120 if test x"$gcc_cv_ld_buildid" = xyes; then
5121 AC_DEFINE(HAVE_LD_BUILDID, 1,
5122 [Define if your linker supports --build-id.])
5125 AC_ARG_ENABLE(linker-build-id,
5126 [AS_HELP_STRING([--enable-linker-build-id],
5127 [compiler will always pass --build-id to linker])],
5129 enable_linker_build_id=no)
5131 if test x"$enable_linker_build_id" = xyes; then
5132 if test x"$gcc_cv_ld_buildid" = xyes; then
5133 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5134 [Define if gcc should always pass --build-id to linker.])
5136 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5140 # In binutils 2.21, GNU ld gained support for new emulations fully
5141 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5142 AC_CACHE_CHECK(linker *_sol2 emulation support,
5143 gcc_cv_ld_sol2_emulation,
5144 [gcc_cv_ld_sol2_emulation=no
5145 if test $in_tree_ld = yes ; then
5146 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5147 "$gcc_cv_gld_minor_version" -ge 21 -o \
5148 "$gcc_cv_gld_major_version" -gt 2 \
5149 && test $in_tree_ld_is_elf = yes; then
5150 gcc_cv_ld_sol2_emulation=yes
5152 elif test x$gcc_cv_ld != x; then
5153 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5154 grep _sol2 > /dev/null; then
5155 gcc_cv_ld_sol2_emulation=yes
5158 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5159 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5160 [Define if your linker supports the *_sol2 emulations.])
5163 AC_CACHE_CHECK(linker --sysroot support,
5165 [gcc_cv_ld_sysroot=no
5166 if test $in_tree_ld = yes ; then
5167 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5168 gcc_cv_ld_sysroot=yes
5170 elif test x$gcc_cv_ld != x; then
5171 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
5172 gcc_cv_ld_sysroot=yes
5175 if test x"$gcc_cv_ld_sysroot" = xyes; then
5176 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5177 [Define if your linker supports --sysroot.])
5180 # Test for stack protector support in target C library.
5181 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5182 gcc_cv_libc_provides_ssp,
5183 [gcc_cv_libc_provides_ssp=no
5185 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
5186 # glibc 2.4 and later provides __stack_chk_fail and
5187 # either __stack_chk_guard, or TLS access to stack guard canary.
5188 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5189 [if test -f $target_header_dir/features.h \
5190 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5191 $target_header_dir/features.h > /dev/null; then
5192 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5193 $target_header_dir/features.h > /dev/null && \
5194 test -f $target_header_dir/bits/uClibc_config.h && \
5195 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5196 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5197 gcc_cv_libc_provides_ssp=yes
5199 # all versions of Bionic support stack protector
5200 elif test -f $target_header_dir/sys/cdefs.h \
5201 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5202 $target_header_dir/sys/cdefs.h > /dev/null; then
5203 gcc_cv_libc_provides_ssp=yes
5207 # Avoid complicated tests (see
5208 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5209 # simply assert that glibc does provide this, which is true for all
5210 # realistically usable GNU/Hurd configurations.
5211 gcc_cv_libc_provides_ssp=yes;;
5212 *-*-darwin* | *-*-freebsd*)
5213 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5214 [echo "no __stack_chk_fail on this target"])
5216 *) gcc_cv_libc_provides_ssp=no ;;
5219 if test x$gcc_cv_libc_provides_ssp = xyes; then
5220 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5221 [Define if your target C library provides stack protector support])
5224 # Test for <sys/sdt.h> on the target.
5225 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5226 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5228 if test -f $target_header_dir/sys/sdt.h; then
5230 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5231 [Define if your target C library provides sys/sdt.h])
5233 AC_MSG_RESULT($have_sys_sdt_h)
5235 # Check if TFmode long double should be used by default or not.
5236 # Some glibc targets used DFmode long double, but with glibc 2.4
5237 # and later they can use TFmode.
5239 powerpc*-*-linux* | \
5243 AC_ARG_WITH(long-double-128,
5244 [AS_HELP_STRING([--with-long-double-128],
5245 [use 128-bit long double by default])],
5246 gcc_cv_target_ldbl128="$with_long_double_128",
5247 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5248 [gcc_cv_target_ldbl128=no
5249 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5250 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5251 && gcc_cv_target_ldbl128=yes
5255 if test x$gcc_cv_target_ldbl128 = xyes; then
5256 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5257 [Define if TFmode long double should be the default])
5260 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5261 gcc_cv_target_dl_iterate_phdr=unknown
5263 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5264 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5265 # libdl there, both complicating its use and breaking compatibility
5266 # between Solaris 10 updates.
5267 *-*-solaris2.1[[1-9]]*)
5268 # <link.h> needs both a dl_iterate_phdr declaration and support for
5269 # compilation with largefile support.
5270 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5271 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5272 gcc_cv_target_dl_iterate_phdr=yes
5274 gcc_cv_target_dl_iterate_phdr=no
5277 *-*-dragonfly* | *-*-freebsd*)
5278 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5279 gcc_cv_target_dl_iterate_phdr=yes
5281 gcc_cv_target_dl_iterate_phdr=no
5285 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5286 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5287 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5288 [Define if your target C library provides the `dl_iterate_phdr' function.])
5290 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5292 # We no longer support different GC mechanisms. Emit an error if
5293 # the user configures with --with-gc.
5295 [AS_HELP_STRING([--with-gc={page,zone}],
5296 [this option is not supported anymore. It used to choose
5297 the garbage collection mechanism to use with the compiler])],
5298 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5301 # Libraries to use on the host. This will normally be set by the top
5302 # level Makefile. Here we simply capture the value for our Makefile.
5303 if test -z "${HOST_LIBS+set}"; then
5308 # Use the system's zlib library.
5310 zlibinc="-I\$(srcdir)/../zlib"
5311 AC_ARG_WITH(system-zlib,
5312 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
5319 dnl Very limited version of automake's enable-maintainer-mode
5321 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5322 dnl maintainer-mode is disabled by default
5323 AC_ARG_ENABLE(maintainer-mode,
5324 [AS_HELP_STRING([--enable-maintainer-mode],
5325 [enable make rules and dependencies not useful
5326 (and sometimes confusing) to the casual installer])],
5327 maintainer_mode=$enableval,
5330 AC_MSG_RESULT($maintainer_mode)
5332 if test "$maintainer_mode" = "yes"; then
5339 dnl Whether to prevent multiple front-ends from linking at the same time
5341 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5342 AC_ARG_ENABLE(link-mutex,
5343 [AS_HELP_STRING([--enable-link-mutex],
5344 [avoid linking multiple front-ends at once to avoid thrashing
5345 on the build machine])],
5346 do_link_mutex=$enableval,
5348 AC_MSG_RESULT($do_link_mutex)
5350 if test "$do_link_mutex" = "yes"; then
5355 AC_SUBST(DO_LINK_MUTEX)
5361 # Make empty files to contain the specs and options for each language.
5362 # Then add #include lines to for a compiler that has specs and/or options.
5368 # These (without "all_") are set in each config-lang.in.
5369 # `language' must be a single word so is spelled singularly.
5372 all_outputs='Makefile'
5373 # List of language makefile fragments.
5375 # Additional files for gengtype
5376 all_gtfiles="$target_gtfiles"
5378 # These are the languages that are set in --enable-languages,
5379 # and are available in the GCC tree.
5380 all_selected_languages=
5382 # Add the language fragments.
5383 # Languages are added via two mechanisms. Some information must be
5384 # recorded in makefile variables, these are defined in config-lang.in.
5385 # We accumulate them and plug them into the main Makefile.
5386 # The other mechanism is a set of hooks for each of the main targets
5387 # like `clean', `install', etc.
5389 language_hooks="Make-hooks"
5391 for lang in ${srcdir}/*/config-lang.in
5394 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5396 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5397 if test "x$lang_alias" = x
5399 echo "$lang doesn't set \$language." 1>&2
5402 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5403 subdirs="$subdirs $subdir"
5405 # $gcc_subdir is where the gcc integration files are to be found
5406 # for a language, both for internal compiler purposes (compiler
5407 # sources implementing front-end to GCC tree converters), and for
5408 # build infrastructure purposes (Make-lang.in, etc.)
5410 # This will be <subdir> (relative to $srcdir) if a line like
5411 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5412 # is found in <langdir>/config-lang.in, and will remain <langdir>
5415 # Except for the language alias (fetched above), the regular
5416 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5417 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5418 # only this and the language alias.
5420 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5421 if [ "$gcc_subdir" = "" ]; then
5422 gcc_subdir="$subdir"
5425 case ",$enable_languages," in
5427 all_selected_languages="$all_selected_languages $lang_alias"
5428 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5429 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5441 . ${srcdir}/$gcc_subdir/config-lang.in
5442 if test "x$language" = x
5444 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5449 case ",$enable_languages," in
5452 for i in $subdir_requires; do
5453 test -f "${srcdir}/$i/config-lang.in" && continue
5461 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5462 if test -f $srcdir/$gcc_subdir/lang.opt; then
5463 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5464 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5466 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5467 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5469 all_languages="$all_languages $language"
5470 all_compilers="$all_compilers $compilers"
5471 all_outputs="$all_outputs $outputs"
5472 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5473 case ",$enable_languages," in
5475 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5477 AC_SUBST(enable_lto)
5484 for language in $all_selected_languages
5486 check_languages="$check_languages check-$language"
5489 # We link each language in with a set of hooks, reached indirectly via
5490 # lang.${target}. Only do so for selected languages.
5494 target_list="all.cross start.encap rest.encap tags \
5495 install-common install-man install-info install-pdf install-html dvi \
5496 pdf html uninstall info man srcextra srcman srcinfo \
5497 mostlyclean clean distclean maintainer-clean install-plugin"
5499 for t in $target_list
5502 for lang in $all_selected_languages
5506 echo "lang.$t: $x" >> Make-hooks
5510 # Option include files
5513 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5514 option_includes="option-includes.mk"
5515 AC_SUBST_FILE(option_includes)
5523 echo "dir ." > .gdbinit
5524 echo "dir ${srcdir}" >> .gdbinit
5525 if test x$gdb_needs_out_file_path = xyes
5527 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5529 if test "x$subdirs" != x; then
5532 echo "dir ${srcdir}/$s" >> .gdbinit
5535 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5536 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
5538 # Put a breakpoint on __asan_report_error to help with debugging buffer
5541 *-fsanitize=address*)
5542 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
5546 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5547 AC_SUBST(gcc_tooldir)
5550 # Find a directory in which to install a shared libgcc.
5552 AC_ARG_ENABLE(version-specific-runtime-libs,
5553 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5554 [specify that runtime libraries should be
5555 installed in a compiler-specific directory])])
5557 # Substitute configuration variables
5560 AC_SUBST(all_compilers)
5561 AC_SUBST(all_gtfiles)
5562 AC_SUBST(all_lang_makefrags)
5563 AC_SUBST(all_languages)
5564 AC_SUBST(all_selected_languages)
5565 AC_SUBST(build_exeext)
5566 AC_SUBST(build_install_headers_dir)
5567 AC_SUBST(build_xm_file_list)
5568 AC_SUBST(build_xm_include_list)
5569 AC_SUBST(build_xm_defines)
5570 AC_SUBST(build_file_translate)
5571 AC_SUBST(check_languages)
5572 AC_SUBST(cpp_install_dir)
5573 AC_SUBST(xmake_file)
5574 AC_SUBST(tmake_file)
5575 AC_SUBST(TM_ENDIAN_CONFIG)
5576 AC_SUBST(TM_MULTILIB_CONFIG)
5577 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5578 AC_SUBST(extra_gcc_objs)
5579 AC_SUBST(user_headers_inc_next_pre)
5580 AC_SUBST(user_headers_inc_next_post)
5581 AC_SUBST(extra_headers_list)
5582 AC_SUBST(extra_objs)
5583 AC_SUBST(extra_programs)
5584 AC_SUBST(float_h_file)
5585 AC_SUBST(gcc_config_arguments)
5586 AC_SUBST(gcc_gxx_include_dir)
5587 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5588 AC_SUBST(host_exeext)
5589 AC_SUBST(host_xm_file_list)
5590 AC_SUBST(host_xm_include_list)
5591 AC_SUBST(host_xm_defines)
5592 AC_SUBST(out_host_hook_obj)
5594 AC_SUBST(lang_opt_files)
5595 AC_SUBST(lang_specs_files)
5596 AC_SUBST(lang_tree_files)
5597 AC_SUBST(local_prefix)
5599 AC_SUBST(objc_boehm_gc)
5601 AC_SUBST(out_object_file)
5602 AC_SUBST(common_out_file)
5603 AC_SUBST(common_out_object_file)
5604 AC_SUBST(tm_file_list)
5605 AC_SUBST(tm_include_list)
5606 AC_SUBST(tm_defines)
5607 AC_SUBST(tm_p_file_list)
5608 AC_SUBST(tm_p_include_list)
5609 AC_SUBST(xm_file_list)
5610 AC_SUBST(xm_include_list)
5611 AC_SUBST(xm_defines)
5612 AC_SUBST(use_gcc_stdint)
5613 AC_SUBST(c_target_objs)
5614 AC_SUBST(cxx_target_objs)
5615 AC_SUBST(fortran_target_objs)
5616 AC_SUBST(target_cpu_default)
5618 AC_SUBST_FILE(language_hooks)
5621 if test x${build} = x${host} ; then
5622 if test x${host} = x${target} ; then
5623 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5625 echo "Links are now set up to build a cross-compiler" 1>&2
5626 echo " from ${host} to ${target}." 1>&2
5629 if test x${host} = x${target} ; then
5630 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5631 echo " for ${target}." 1>&2
5633 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5634 echo " from ${host} to ${target}." 1>&2
5638 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5639 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5641 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5642 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5643 if test "x${ISLLIBS}" != "x" ; then
5644 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
5647 # Check whether isl_schedule_constraints_compute_schedule is available;
5648 # it's new in ISL-0.13.
5649 if test "x${ISLLIBS}" != "x" ; then
5650 saved_CFLAGS="$CFLAGS"
5651 CFLAGS="$CFLAGS $ISLINC"
5653 LIBS="$LIBS $ISLLIBS $GMPLIBS"
5655 AC_MSG_CHECKING([Checking for isl_schedule_constraints_compute_schedule])
5656 AC_TRY_LINK([#include <isl/schedule.h>],
5657 [isl_schedule_constraints_compute_schedule (NULL);],
5658 [ac_has_isl_schedule_constraints_compute_schedule=yes],
5659 [ac_has_isl_schedule_constraints_compute_schedule=no])
5660 AC_MSG_RESULT($ac_has_isl_schedule_constraints_compute_schedule)
5663 CFLAGS="$saved_CFLAGS"
5665 if test x"$ac_has_isl_schedule_constraints_compute_schedule" = x"yes"; then
5666 AC_DEFINE(HAVE_ISL_SCHED_CONSTRAINTS_COMPUTE_SCHEDULE, 1,
5667 [Define if isl_schedule_constraints_compute_schedule exists.])
5672 AC_SUBST(pluginlibs)
5673 AC_SUBST(enable_plugin)
5674 if test x"$enable_plugin" = x"yes"; then
5675 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5679 # Enable --enable-host-shared
5680 AC_ARG_ENABLE(host-shared,
5681 [AS_HELP_STRING([--enable-host-shared],
5682 [build host code as shared libraries])],
5683 [PICFLAG=-fPIC], [PICFLAG=])
5684 AC_SUBST(enable_host_shared)
5688 AC_ARG_ENABLE(libquadmath-support,
5689 [AS_HELP_STRING([--disable-libquadmath-support],
5690 [disable libquadmath support for Fortran])],
5691 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5692 ENABLE_LIBQUADMATH_SUPPORT=yes)
5693 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5694 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5695 [Define to 1 to enable libquadmath support])
5699 # Specify what hash style to use by default.
5700 AC_ARG_WITH([linker-hash-style],
5701 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5702 [specify the linker hash style])],
5703 [case x"$withval" in
5705 LINKER_HASH_STYLE=sysv
5708 LINKER_HASH_STYLE=gnu
5711 LINKER_HASH_STYLE=both
5714 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5717 [LINKER_HASH_STYLE=''])
5718 if test x"${LINKER_HASH_STYLE}" != x; then
5719 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5720 [The linker hash style])
5723 # Specify what should be the default of -fdiagnostics-color option.
5724 AC_ARG_WITH([diagnostics-color],
5725 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
5726 [specify the default of -fdiagnostics-color option
5727 auto-if-env stands for -fdiagnostics-color=auto if
5728 GCC_COLOR environment variable is present and
5729 -fdiagnostics-color=never otherwise])],
5730 [case x"$withval" in
5732 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
5735 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
5738 DIAGNOSTICS_COLOR_DEFAULT=-1
5741 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
5744 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
5747 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
5748 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
5749 [The default for -fdiagnostics-color option])
5751 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
5752 # of jit/jit-playback.c.
5753 cat > gcc-driver-name.h <<EOF
5754 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
5757 # Configure the subdirectories
5758 # AC_CONFIG_SUBDIRS($subdirs)
5760 # Create the Makefile
5761 # and configure language subdirectories
5762 AC_CONFIG_FILES($all_outputs)
5764 AC_CONFIG_COMMANDS([default],
5766 case ${CONFIG_HEADERS} in
5767 *auto-host.h:config.in*)
5770 # Make sure all the subdirs exist.
5771 for d in $subdirs doc build common c-family
5773 test -d $d || mkdir $d
5776 [subdirs='$subdirs'])