2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2013 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 # Determine the target- and build-specific subdirectories
44 # Set program_transform_name
47 # Check for bogus environment variables.
48 # Test if LIBRARY_PATH contains the notation for the current directory
49 # since this would lead to problems installing/building glibc.
50 # LIBRARY_PATH contains the current directory if one of the following
52 # - one of the terminals (":" and ";") is the first or last sign
53 # - two terminals occur directly after each other
54 # - the path contains an element with a dot in it
55 AC_MSG_CHECKING(LIBRARY_PATH variable)
57 case ${LIBRARY_PATH} in
58 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
59 library_path_setting="contains current directory"
62 library_path_setting="ok"
66 AC_MSG_RESULT($library_path_setting)
67 if test "$library_path_setting" != "ok"; then
69 *** LIBRARY_PATH shouldn't contain the current directory when
70 *** building gcc. Please change the environment variable
71 *** and run configure again.])
74 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
75 # since this would lead to problems installing/building glibc.
76 # GCC_EXEC_PREFIX contains the current directory if one of the following
78 # - one of the terminals (":" and ";") is the first or last sign
79 # - two terminals occur directly after each other
80 # - the path contains an element with a dot in it
81 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
83 case ${GCC_EXEC_PREFIX} in
84 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
85 gcc_exec_prefix_setting="contains current directory"
88 gcc_exec_prefix_setting="ok"
92 AC_MSG_RESULT($gcc_exec_prefix_setting)
93 if test "$gcc_exec_prefix_setting" != "ok"; then
95 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
96 *** building gcc. Please change the environment variable
97 *** and run configure again.])
104 # Specify the local prefix
106 AC_ARG_WITH(local-prefix,
107 [AS_HELP_STRING([--with-local-prefix=DIR],
108 [specifies directory to put local include])],
109 [case "${withval}" in
110 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
112 *) local_prefix=$with_local_prefix ;;
115 # Default local prefix if it is empty
116 if test x$local_prefix = x; then
117 local_prefix=/usr/local
120 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
121 # passed in by the toplevel make and thus we'd get different behavior
122 # depending on where we built the sources.
124 # Specify the g++ header file directory
125 AC_ARG_WITH(gxx-include-dir,
126 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
127 [specifies directory to put g++ header files])],
128 [case "${withval}" in
129 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
131 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
134 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
135 if test x${gcc_gxx_include_dir} = x; then
136 if test x${enable_version_specific_runtime_libs} = xyes; then
137 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 libstdcxx_incdir='include/c++/$(version)'
140 if test x$host != x$target; then
141 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
143 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
147 gcc_gxx_include_dir_add_sysroot=0
148 if test "${with_sysroot+set}" = set; then
149 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
150 if test "${gcc_gxx_without_sysroot}"; then
151 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
152 gcc_gxx_include_dir_add_sysroot=1
156 AC_ARG_WITH(cpp_install_dir,
157 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
158 [install the user visible C preprocessor in DIR
159 (relative to PREFIX) as well as PREFIX/bin])],
160 [if test x$withval = xyes; then
161 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
162 elif test x$withval != xno; then
163 cpp_install_dir=$withval
166 # We would like to our source tree to be readonly. However when releases or
167 # pre-releases are generated, the flex/bison generated files as well as the
168 # various formats of manuals need to be included along with the rest of the
169 # sources. Therefore we have --enable-generated-files-in-srcdir to do
172 AC_MSG_CHECKING([whether to place generated files in the source directory])
173 dnl generated-files-in-srcdir is disabled by default
174 AC_ARG_ENABLE(generated-files-in-srcdir,
175 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
176 [put copies of generated files in source dir
177 intended for creating source tarballs for users
178 without texinfo bison or flex])],
179 generated_files_in_srcdir=$enableval,
180 generated_files_in_srcdir=no)
182 AC_MSG_RESULT($generated_files_in_srcdir)
184 if test "$generated_files_in_srcdir" = "yes"; then
191 # -------------------
192 # Find default linker
193 # -------------------
197 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
198 gnu_ld_flag="$with_gnu_ld",
201 # With pre-defined ld
203 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
204 DEFAULT_LINKER="$with_ld")
205 if test x"${DEFAULT_LINKER+set}" = x"set"; then
206 if test ! -x "$DEFAULT_LINKER"; then
207 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
208 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
211 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
212 [Define to enable the use of a default linker.])
215 AC_MSG_CHECKING([whether a default linker was specified])
216 if test x"${DEFAULT_LINKER+set}" = x"set"; then
217 if test x"$gnu_ld_flag" = x"no"; then
218 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
220 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
226 # With demangler in GNU ld
227 AC_ARG_WITH(demangler-in-ld,
228 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
229 demangler_in_ld="$with_demangler_in_ld",
232 # ----------------------
233 # Find default assembler
234 # ----------------------
238 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
239 gas_flag="$with_gnu_as",
243 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
244 DEFAULT_ASSEMBLER="$with_as")
245 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
246 if test ! -x "$DEFAULT_ASSEMBLER"; then
247 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
248 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
251 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
252 [Define to enable the use of a default assembler.])
255 AC_MSG_CHECKING([whether a default assembler was specified])
256 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
257 if test x"$gas_flag" = x"no"; then
258 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
260 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
270 # If a non-executable a.out is present (e.g. created by GNU as above even if
271 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
272 # file, even when creating an executable, so an execution test fails.
273 # Remove possible default executable files to avoid this.
275 # FIXME: This really belongs into AC_PROG_CC and can be removed once
276 # Autoconf includes it.
277 rm -f a.out a.exe b.out
279 # Find the native compiler
283 ACX_PROG_GNAT([-I"$srcdir"/ada])
285 # autoconf is lame and doesn't give us any substitution variable for this.
286 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
287 NO_MINUS_C_MINUS_O=yes
289 OUTPUT_OPTION='-o $@'
291 AC_SUBST(NO_MINUS_C_MINUS_O)
292 AC_SUBST(OUTPUT_OPTION)
294 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
295 # optimizations to be activated explicitly by the toplevel.
298 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
299 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
304 # Determine PICFLAG for target gnatlib.
305 GCC_PICFLAG_FOR_TARGET
306 AC_SUBST(PICFLAG_FOR_TARGET)
308 # -------------------------
309 # Check C compiler features
310 # -------------------------
312 AC_USE_SYSTEM_EXTENSIONS
318 # sizeof(char) is 1 by definition.
319 AC_CHECK_SIZEOF(void *)
320 AC_CHECK_SIZEOF(short)
322 AC_CHECK_SIZEOF(long)
323 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
324 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
327 # ---------------------
328 # Warnings and checking
329 # ---------------------
331 # Check $CC warning features (if it's GCC).
332 # We want to use -pedantic, but we don't want warnings about
336 # * C++11 narrowing conversions in { }
337 # So, we only use -pedantic if we can disable those warnings.
339 ACX_PROG_CC_WARNING_OPTS(
340 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual])), [loose_warn])
341 ACX_PROG_CC_WARNING_OPTS(
342 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
344 ACX_PROG_CC_WARNING_OPTS(
345 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
346 ACX_PROG_CC_WARNING_OPTS(
347 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
348 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
349 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
350 [-Wno-overlength-strings])), [strict_warn])
351 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
353 # The above macros do nothing if the compiler is not GCC. However, the
354 # Makefile has more goo to add other flags, so these variables are used
355 # to enable warnings only for GCC.
358 if test "x$GCC" = "xyes"; then
359 warn_cflags='$(GCC_WARN_CFLAGS)'
360 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
362 AC_SUBST(warn_cflags)
363 AC_SUBST(warn_cxxflags)
365 # Disable exceptions and RTTI if building with g++
366 ACX_PROG_CC_WARNING_OPTS(
367 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
370 # Enable expensive internal checks
372 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
376 AC_ARG_ENABLE(checking,
377 [AS_HELP_STRING([[--enable-checking[=LIST]]],
378 [enable expensive run-time checks. With LIST,
379 enable only specific categories of checks.
380 Categories are: yes,no,all,none,release.
381 Flags are: assert,df,fold,gc,gcac,gimple,misc,
382 rtlflag,rtl,runtime,tree,valgrind,types])],
383 [ac_checking_flags="${enableval}"],[
384 # Determine the default checks.
385 if test x$is_release = x ; then
386 ac_checking_flags=yes
388 ac_checking_flags=release
390 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
391 for check in release $ac_checking_flags
394 # these set all the flags to specific states
395 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
396 ac_fold_checking= ; ac_gc_checking=1 ;
397 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
398 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
399 ac_tree_checking=1 ; ac_valgrind_checking= ;
400 ac_types_checking=1 ;;
401 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
402 ac_fold_checking= ; ac_gc_checking= ;
403 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
404 ac_rtlflag_checking= ; ac_runtime_checking= ;
405 ac_tree_checking= ; ac_valgrind_checking= ;
406 ac_types_checking= ;;
407 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
408 ac_fold_checking=1 ; ac_gc_checking=1 ;
409 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
410 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
411 ac_tree_checking=1 ; ac_valgrind_checking= ;
412 ac_types_checking=1 ;;
413 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
414 ac_fold_checking= ; ac_gc_checking= ;
415 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
416 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
417 ac_tree_checking= ; ac_valgrind_checking= ;
418 ac_types_checking= ;;
419 # these enable particular checks
420 assert) ac_assert_checking=1 ;;
421 df) ac_df_checking=1 ;;
422 fold) ac_fold_checking=1 ;;
423 gc) ac_gc_checking=1 ;;
424 gcac) ac_gc_always_collect=1 ;;
425 gimple) ac_gimple_checking=1 ;;
426 misc) ac_checking=1 ;;
427 rtl) ac_rtl_checking=1 ;;
428 rtlflag) ac_rtlflag_checking=1 ;;
429 runtime) ac_runtime_checking=1 ;;
430 tree) ac_tree_checking=1 ;;
431 types) ac_types_checking=1 ;;
432 valgrind) ac_valgrind_checking=1 ;;
433 *) AC_MSG_ERROR(unknown check category $check) ;;
439 if test x$ac_checking != x ; then
440 AC_DEFINE(ENABLE_CHECKING, 1,
441 [Define if you want more run-time sanity checks. This one gets a grab
442 bag of miscellaneous but relatively cheap checks.])
443 nocommon_flag=-fno-common
445 AC_SUBST(nocommon_flag)
446 if test x$ac_df_checking != x ; then
447 AC_DEFINE(ENABLE_DF_CHECKING, 1,
448 [Define if you want more run-time sanity checks for dataflow.])
450 if test x$ac_assert_checking != x ; then
451 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
452 [Define if you want assertions enabled. This is a cheap check.])
454 if test x$ac_gimple_checking != x ; then
455 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
456 [Define if you want operations on GIMPLE (the basic data structure of
457 the high-level optimizers) to be checked for dynamic type safety at
458 runtime. This is moderately expensive.])
460 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
461 if test x$ac_runtime_checking != x ; then
462 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
463 [Define if you want runtime assertions enabled. This is a cheap check.])
465 if test x$ac_tree_checking != x ; then
466 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
467 [Define if you want all operations on trees (the basic data
468 structure of the front ends) to be checked for dynamic type safety
469 at runtime. This is moderately expensive. The tree browser debugging
470 routines will also be enabled by this option.
472 TREEBROWSER=tree-browser.o
475 if test x$ac_types_checking != x ; then
476 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
477 [Define if you want all gimple types to be verified after gimplifiation.
481 AC_SUBST(TREEBROWSER)
482 AC_SUBST(TREECHECKING)
483 if test x$ac_rtl_checking != x ; then
484 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
485 [Define if you want all operations on RTL (the basic data structure
486 of the optimizer and back end) to be checked for dynamic type safety
487 at runtime. This is quite expensive.])
489 if test x$ac_rtlflag_checking != x ; then
490 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
491 [Define if you want RTL flag accesses to be checked against the RTL
492 codes that are supported for each access macro. This is relatively
495 if test x$ac_gc_checking != x ; then
496 AC_DEFINE(ENABLE_GC_CHECKING, 1,
497 [Define if you want the garbage collector to do object poisoning and
498 other memory allocation checks. This is quite expensive.])
500 if test x$ac_gc_always_collect != x ; then
501 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
502 [Define if you want the garbage collector to operate in maximally
503 paranoid mode, validating the entire heap and collecting garbage at
504 every opportunity. This is extremely expensive.])
506 if test x$ac_fold_checking != x ; then
507 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
508 [Define if you want fold checked that it never destructs its argument.
509 This is quite expensive.])
511 valgrind_path_defines=
514 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
515 dnl # an if statement. This was the source of very frustrating bugs
516 dnl # in converting to autoconf 2.5x!
517 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
519 if test x$ac_valgrind_checking != x ; then
520 # It is certainly possible that there's valgrind but no valgrind.h.
521 # GCC relies on making annotations so we must have both.
522 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
523 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
524 [[#include <valgrind/memcheck.h>
525 #ifndef VALGRIND_DISCARD
526 #error VALGRIND_DISCARD not defined
528 [gcc_cv_header_valgrind_memcheck_h=yes],
529 [gcc_cv_header_valgrind_memcheck_h=no])
530 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
531 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
532 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
533 [[#include <memcheck.h>
534 #ifndef VALGRIND_DISCARD
535 #error VALGRIND_DISCARD not defined
537 [gcc_cv_header_memcheck_h=yes],
538 [gcc_cv_header_memcheck_h=no])
539 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
540 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
541 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
542 if test "x$valgrind_path" = "x" \
543 || (test $have_valgrind_h = no \
544 && test $gcc_cv_header_memcheck_h = no \
545 && test $gcc_cv_header_valgrind_memcheck_h = no); then
546 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
548 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
549 valgrind_command="$valgrind_path -q"
550 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
551 [Define if you want to run subprograms and generated programs
552 through valgrind (a memory checker). This is extremely expensive.])
553 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
554 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
555 [Define if valgrind's valgrind/memcheck.h header is installed.])
557 if test $gcc_cv_header_memcheck_h = yes; then
558 AC_DEFINE(HAVE_MEMCHECK_H, 1,
559 [Define if valgrind's memcheck.h header is installed.])
562 AC_SUBST(valgrind_path_defines)
563 AC_SUBST(valgrind_command)
565 # Enable code coverage collection
566 AC_ARG_ENABLE(coverage,
567 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
568 [enable compiler's code coverage collection.
569 Use to measure compiler performance and locate
570 unused parts of the compiler. With LEVEL, specify
571 optimization. Values are opt, noopt,
573 [case "${enableval}" in
575 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
578 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
581 # a.k.a. --disable-coverage
585 AC_MSG_ERROR(unknown coverage setting $enableval)
589 AC_SUBST(coverage_flags)
591 AC_ARG_ENABLE(gather-detailed-mem-stats,
592 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
593 [enable detailed memory allocation stats gathering])], [],
594 [enable_gather_detailed_mem_stats=no])
595 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
596 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
597 [Define to enable detailed memory allocation stats gathering.])
599 # -------------------------------
600 # Miscenalleous configure options
601 # -------------------------------
605 [AS_HELP_STRING([--with-stabs],
606 [arrange to use stabs instead of host debug format])],
610 # Determine whether or not multilibs are enabled.
611 AC_ARG_ENABLE(multilib,
612 [AS_HELP_STRING([--enable-multilib],
613 [enable library support for multiple ABIs])],
614 [], [enable_multilib=yes])
615 AC_SUBST(enable_multilib)
617 # Determine whether or not multiarch is enabled.
618 AC_ARG_ENABLE(multiarch,
619 [AS_HELP_STRING([--enable-multiarch],
620 [enable support for multiarch paths])],
621 [case "${enableval}" in
622 yes|no|auto) enable_multiarch=$enableval;;
623 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
624 esac], [enable_multiarch=auto])
625 if test x${enable_multiarch} = xauto; then
626 if test x${with_native_system_header_dir} != x; then
627 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
630 if test x$host != x$target && test "x$with_sysroot" = x; then
631 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
635 AC_MSG_CHECKING(for multiarch configuration)
636 AC_SUBST(enable_multiarch)
637 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
639 # needed for setting the multiarch name for soft-float/hard-float ABIs
643 # Enable __cxa_atexit for C++.
644 AC_ARG_ENABLE(__cxa_atexit,
645 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
648 # Enable C extension for decimal float if target supports it.
649 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
651 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
652 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
653 [Define to 1 to enable decimal float extension to C.])
655 # Use default_decimal_float for dependency.
656 enable_decimal_float=$default_decimal_float
658 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
659 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
660 [Define to 1 to specify that we are using the BID decimal floating
661 point format instead of DPD])
663 # Enable C extension for fixed-point arithmetic.
664 AC_ARG_ENABLE(fixed-point,
665 [AS_HELP_STRING([--enable-fixed-point],
666 [enable fixed-point arithmetic extension to C])],
671 enable_fixed_point=yes
675 enable_fixed_point=yes
678 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
679 enable_fixed_point=no
683 AC_SUBST(enable_fixed_point)
685 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
686 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
687 [Define to 1 to enable fixed-point arithmetic extension to C.])
690 # Pass with no value to take the default
691 # Pass with a value to specify a thread package
692 AC_ARG_ENABLE(threads,
693 [AS_HELP_STRING([[--enable-threads[=LIB]]],
694 [enable thread usage for target GCC,
695 using LIB thread package])],,
699 [AS_HELP_STRING([--enable-tls],
700 [enable or disable generation of tls code
701 overriding the assembler check for tls support])],
705 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
706 Valid choices are 'yes' and 'no'.]) ;;
710 AC_ARG_ENABLE(objc-gc,
711 [AS_HELP_STRING([--enable-objc-gc],
712 [enable the use of Boehm's garbage collector with
713 the GNU Objective-C runtime])],
714 if test x$enable_objc_gc = xno; then
722 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
723 dwarf2="$with_dwarf2",
726 AC_ARG_ENABLE(shared,
727 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
729 case $enable_shared in
733 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
734 for pkg in $enableval; do
735 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
742 ], [enable_shared=yes])
743 AC_SUBST(enable_shared)
745 AC_ARG_WITH([native-system-header-dir],
746 [ --with-native-system-header-dir=dir
747 use dir as the directory to look for standard
748 system header files in. Defaults to /usr/include.],
750 case ${with_native_system_header_dir} in
751 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
752 /* | [[A-Za-z]]:[[\\/]]*) ;;
753 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
755 configured_native_system_header_dir="${withval}"
756 ], [configured_native_system_header_dir=])
758 AC_ARG_WITH(build-sysroot,
759 [AS_HELP_STRING([--with-build-sysroot=sysroot],
760 [use sysroot as the system root during the build])],
761 [if test x"$withval" != x ; then
762 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
764 [SYSROOT_CFLAGS_FOR_TARGET=])
765 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
767 if test "x$prefix" = xNONE; then
768 test_prefix=/usr/local
772 if test "x$exec_prefix" = xNONE; then
773 test_exec_prefix=$test_prefix
775 test_exec_prefix=$exec_prefix
779 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
780 [search for usr/lib, usr/include, et al, within DIR])],
782 case ${with_sysroot} in
783 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
784 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
787 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
788 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
790 case ${TARGET_SYSTEM_ROOT} in
791 "${test_prefix}"|"${test_prefix}/"*|\
792 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
793 '${prefix}'|'${prefix}/'*|\
794 '${exec_prefix}'|'${exec_prefix}/'*)
795 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
796 TARGET_SYSTEM_ROOT_DEFINE="$t"
801 TARGET_SYSTEM_ROOT_DEFINE=
802 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
804 AC_SUBST(TARGET_SYSTEM_ROOT)
805 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
806 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
809 [AS_HELP_STRING([--with-specs=SPECS],
810 [add SPECS to driver command-line processing])],
811 [CONFIGURE_SPECS=$withval],
814 AC_SUBST(CONFIGURE_SPECS)
816 ACX_PKGVERSION([GCC])
817 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
819 # Sanity check enable_languages in case someone does not run the toplevel
820 # configure # script.
821 AC_ARG_ENABLE(languages,
822 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
823 [case ,${enable_languages}, in
825 # go safe -- we cannot be much sure without the toplevel
827 # analysis of which target libs are present and usable
831 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
836 enable_languages=c,${enable_languages}
839 [enable_languages=c])
841 AC_ARG_WITH(multilib-list,
842 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
844 with_multilib_list=default)
846 # -------------------------
847 # Checks for other programs
848 # -------------------------
852 # Find some useful tools
854 # We need awk to create options.c and options.h.
855 # Bail out if it's missing.
857 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
864 AC_SUBST(ranlib_flags)
868 # See if cmp has --ignore-initial.
869 gcc_AC_PROG_CMP_IGNORE_INITIAL
871 # See if we have the mktemp command.
872 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
874 # See if makeinfo has been installed and is modern enough
875 # that we can use it.
876 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
877 [GNU texinfo.* \([0-9][0-9.]*\)],
878 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
879 if test $gcc_cv_prog_makeinfo_modern = no; then
881 *** Makeinfo is missing or too old.
882 *** Info documentation will not be built.])
889 # Is pod2man recent enough to regenerate manpages?
890 AC_MSG_CHECKING([for recent Pod::Man])
891 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
893 GENERATED_MANPAGES=generated-manpages
898 AC_SUBST(GENERATED_MANPAGES)
900 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
903 dnl Don't use AC_PROG_LEX; we insist on flex.
904 dnl LEXLIB is not useful in gcc.
905 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
908 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
910 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
911 # check for build == host before using them.
914 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
915 && test -d ../binutils ; then
916 NM='${objdir}/../binutils/nm-new'
918 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
922 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
923 && test -d ../binutils ; then
924 AR='${objdir}/../binutils/ar'
926 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
930 # --------------------
931 # Checks for C headers
932 # --------------------
934 # Need to reject headers which give warnings, so that the -Werror bootstrap
935 # works later. *sigh* This needs to come before all header checks.
942 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
943 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
944 sys/resource.h sys/param.h sys/times.h sys/stat.h \
945 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h libintl.h)
947 # Check for thread headers.
948 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
949 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
951 # These tests can't be done till we know if we have limits.h.
955 # ----------------------
956 # Checks for C++ headers
957 # ----------------------
959 dnl Autoconf will give an error in the configure script if there is no
960 dnl C++ preprocessor. Hack to prevent that.
961 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
963 m4_popdef([AC_MSG_ERROR])[]dnl
967 AC_CHECK_HEADERS(unordered_map)
968 AC_CHECK_HEADERS(tr1/unordered_map)
969 AC_CHECK_HEADERS(ext/hash_map)
978 # These libraries may be used by collect2.
979 # We may need a special search path to get them linked.
980 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
982 for libs in '' -lld -lmld \
983 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
984 '-L/usr/lib/cmplrs/cc3.11 -lmld'
987 AC_TRY_LINK_FUNC(ldopen,
988 [gcc_cv_collect2_libs="$libs"; break])
991 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
992 case $gcc_cv_collect2_libs in
994 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
996 AC_SUBST(COLLECT2_LIBS)
998 # When building Ada code on Alpha, we need exc_resume which is usually in
999 # -lexc. So test for it.
1002 AC_SEARCH_LIBS(exc_resume, exc)
1005 AC_SUBST(GNAT_LIBEXC)
1007 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1010 AC_SEARCH_LIBS(kstat_open, kstat)
1011 EXTRA_GCC_LIBS="$LIBS"
1013 AC_SUBST(EXTRA_GCC_LIBS)
1015 # Some systems put ldexp and frexp in libm instead of libc; assume
1016 # they're both in the same place. jcf-dump needs them.
1019 AC_SEARCH_LIBS(ldexp, m)
1024 # Use <inttypes.h> only if it exists,
1025 # doesn't clash with <sys/types.h>, and declares intmax_t.
1026 AC_MSG_CHECKING(for inttypes.h)
1027 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1028 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1029 [[#include <sys/types.h>
1030 #include <inttypes.h>]],
1031 [[intmax_t i = -1;]])],
1032 [gcc_cv_header_inttypes_h=yes],
1033 [gcc_cv_header_inttypes_h=no])])
1034 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1035 if test $gcc_cv_header_inttypes_h = yes; then
1036 AC_DEFINE(HAVE_INTTYPES_H, 1,
1037 [Define if you have a working <inttypes.h> header file.])
1040 dnl Disabled until we have a complete test for buggy enum bitfields.
1041 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1043 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1044 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1045 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1046 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1047 putchar_unlocked putc_unlocked)
1048 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1049 sysconf strsignal getrusage nl_langinfo \
1050 gettimeofday mbstowcs wcswidth mmap setlocale \
1051 gcc_UNLOCKED_FUNCS madvise)
1053 if test x$ac_cv_func_mbstowcs = xyes; then
1054 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1055 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1061 [gcc_cv_func_mbstowcs_works=yes],
1062 [gcc_cv_func_mbstowcs_works=no],
1063 [gcc_cv_func_mbstowcs_works=yes])])
1064 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1065 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1066 [Define this macro if mbstowcs does not crash when its
1067 first argument is NULL.])
1071 AC_CHECK_TYPE(ssize_t, int)
1072 AC_CHECK_TYPE(caddr_t, char *)
1074 GCC_AC_FUNC_MMAP_BLACKLIST
1078 # Under VMS, vfork works very differently than on Unix. The standard test
1079 # won't work, and it isn't easily adaptable. It makes more sense to
1081 ac_cv_func_vfork_works=yes
1086 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1087 # iconv() prototype.
1092 # Until we have in-tree GNU iconv:
1094 AC_SUBST(LIBICONV_DEP)
1100 # We will need to find libiberty.h and ansidecl.h
1101 saved_CFLAGS="$CFLAGS"
1102 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1103 saved_CXXFLAGS="$CXXFLAGS"
1104 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1105 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1106 strsignal strstr stpcpy strverscmp \
1107 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1108 free basename getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1109 #include "ansidecl.h"
1110 #include "system.h"])
1112 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1113 #include "ansidecl.h"
1115 #ifdef HAVE_SYS_RESOURCE_H
1116 #include <sys/resource.h>
1120 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1121 #include "ansidecl.h"
1123 #ifdef HAVE_SYS_RESOURCE_H
1124 #include <sys/resource.h>
1126 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1127 [Define to `long' if <sys/resource.h> doesn't define.])])
1129 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1130 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1131 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1132 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1133 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1134 #include "ansidecl.h"
1143 gcc_AC_CHECK_DECLS(times, , ,[
1144 #include "ansidecl.h"
1146 #ifdef HAVE_SYS_TIMES_H
1147 #include <sys/times.h>
1151 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1152 #include "ansidecl.h"
1157 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1160 gcc_AC_CHECK_DECLS(madvise, , ,[
1161 #include "ansidecl.h"
1166 # More time-related stuff.
1167 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1168 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1169 #include "ansidecl.h"
1171 #ifdef HAVE_SYS_TIMES_H
1172 #include <sys/times.h>
1174 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1175 if test $ac_cv_struct_tms = yes; then
1176 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1177 [Define if <sys/times.h> defines struct tms.])
1180 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1181 # revisit after autoconf 2.50.
1182 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1183 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1184 #include "ansidecl.h"
1186 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1187 if test $gcc_cv_type_clock_t = yes; then
1188 AC_DEFINE(HAVE_CLOCK_T, 1,
1189 [Define if <time.h> defines clock_t.])
1192 # Check if F_SETLKW is supported by fcntl.
1193 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1194 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1195 #include <fcntl.h>]], [[
1201 return fcntl (1, F_SETLKW, &fl);]])],
1202 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1203 if test $ac_cv_f_setlkw = yes; then
1204 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1205 [Define if F_SETLKW supported by fcntl.])
1208 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1209 CFLAGS="$saved_CFLAGS"
1210 CXXFLAGS="$saved_CXXFLAGS"
1212 # mkdir takes a single argument on some systems.
1213 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1221 # With Setjmp/Longjmp based exception handling.
1222 AC_ARG_ENABLE(sjlj-exceptions,
1223 [AS_HELP_STRING([--enable-sjlj-exceptions],
1224 [arrange to use setjmp/longjmp exception handling])],
1227 if test $enableval != yes; then
1228 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1233 force_sjlj_exceptions=yes],
1236 force_sjlj_exceptions=yes
1240 force_sjlj_exceptions=no
1243 if test $force_sjlj_exceptions = yes; then
1244 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1245 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1246 [Define 0/1 to force the choice for exception handling model.])
1249 # --------------------------------------------------------
1250 # Build, host, and target specific configuration fragments
1251 # --------------------------------------------------------
1253 # Collect build-machine-specific information.
1254 . ${srcdir}/config.build
1256 # Collect host-machine-specific information.
1257 . ${srcdir}/config.host
1261 # Collect target-machine-specific information.
1262 . ${srcdir}/config.gcc
1264 extra_objs="${host_extra_objs} ${extra_objs}"
1265 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1267 # Default the target-machine variables that were not explicitly set.
1268 if test x"$tm_file" = x
1269 then tm_file=$cpu_type/$cpu_type.h; fi
1271 if test x"$extra_headers" = x
1272 then extra_headers=; fi
1274 if test x$md_file = x
1275 then md_file=$cpu_type/$cpu_type.md; fi
1277 if test x$out_file = x
1278 then out_file=$cpu_type/$cpu_type.c; fi
1280 if test x"$tmake_file" = x
1281 then tmake_file=$cpu_type/t-$cpu_type
1284 # Support --enable-initfini-array.
1285 if test x$enable_initfini_array != xno; then
1286 tm_file="${tm_file} initfini-array.h"
1289 if test x"$dwarf2" = xyes
1290 then tm_file="$tm_file tm-dwarf2.h"
1293 # Say what files are being used for the output code and MD file.
1294 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1295 echo "Using \`$srcdir/config/$md_file' as machine description file."
1297 # If any of the xm_file variables contain nonexistent files, warn
1298 # about them and drop them.
1301 for x in $build_xm_file; do
1302 if test -f $srcdir/config/$x
1304 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1310 for x in $host_xm_file; do
1311 if test -f $srcdir/config/$x
1313 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1319 for x in $xm_file; do
1320 if test -f $srcdir/config/$x
1322 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1328 for f in $tm_file; do
1331 if test $count = ax; then
1332 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1334 echo "Using the following target machine macro files:"
1335 for f in $tm_file; do
1336 echo " $srcdir/config/$f"
1340 if test x$need_64bit_hwint = xyes; then
1341 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1342 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1345 if test x$use_long_long_for_widest_fast_int = xyes; then
1346 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1347 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1348 efficiently supported by the host hardware.])
1351 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1352 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1354 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1355 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1358 for f in $host_xm_file; do
1361 if test $count = a; then
1363 elif test $count = ax; then
1364 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1366 echo "Using the following host machine macro files:"
1367 for f in $host_xm_file; do
1368 echo " $srcdir/config/$f"
1371 echo "Using ${out_host_hook_obj} for host machine hooks."
1373 if test "$host_xm_file" != "$build_xm_file"; then
1375 for f in $build_xm_file; do
1378 if test $count = a; then
1380 elif test $count = ax; then
1381 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1383 echo "Using the following build machine macro files:"
1384 for f in $build_xm_file; do
1385 echo " $srcdir/config/$f"
1390 if test -n "$configured_native_system_header_dir"; then
1391 native_system_header_dir=$configured_native_system_header_dir
1393 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1394 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1398 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1399 gcc_cv_mcontext_underscores,
1401 #include <sys/cdefs.h>
1402 #include <sys/signal.h>
1403 #include <ucontext.h>
1404 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1406 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1407 if test $gcc_cv_mcontext_underscores = yes; then
1408 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1409 [mcontext_t fields start with __])
1418 # Check if a valid thread package
1419 case ${enable_threads} in
1422 target_thread_file='single'
1426 target_thread_file='single'
1428 aix | dce | lynx | mipssde | posix | rtems | \
1429 single | tpf | vxworks | win32)
1430 target_thread_file=${enable_threads}
1433 echo "${enable_threads} is an unknown thread package" 1>&2
1438 if test x${thread_file} = x; then
1439 # No thread file set by target-specific clauses in config.gcc,
1440 # so use file chosen by default logic above
1441 thread_file=${target_thread_file}
1449 if test x$enable___cxa_atexit = xyes || \
1450 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1451 if test x$host = x$target; then
1453 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1454 # keyed to flag_use_cxa_atexit
1459 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1460 [echo "__cxa_atexit can't be enabled on this target"])
1464 # We can't check for __cxa_atexit when building a cross, so assume
1468 if test x$use_cxa_atexit = xyes; then
1469 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1470 [Define if you want to use __cxa_atexit, rather than atexit, to
1471 register C++ destructors for local statics and global objects.
1472 This is essential for fully standards-compliant handling of
1473 destructors, but requires __cxa_atexit in libc.])
1477 # Look for a file containing extra machine modes.
1478 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1479 extra_modes_file='$(srcdir)'/config/${extra_modes}
1480 AC_SUBST(extra_modes_file)
1481 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1482 [Define to the name of a file containing a list of extra machine modes
1483 for this architecture.])
1486 # Convert extra_options into a form suitable for Makefile use.
1489 for f in $extra_options; do
1490 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1491 all_opt_files="$all_opt_files $srcdir/config/$f"
1493 AC_SUBST(extra_opt_files)
1495 # auto-host.h is the file containing items generated by autoconf and is
1496 # the first file included by config.h.
1497 # If host=build, it is correct to have bconfig include auto-host.h
1498 # as well. If host!=build, we are in error and need to do more
1499 # work to find out the build config parameters.
1500 if test x$host = x$build
1502 build_auto=auto-host.h
1504 # We create a subdir, then run autoconf in the subdir.
1505 # To prevent recursion we set host and build for the new
1506 # invocation of configure to the build for this invocation
1513 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1514 *) realsrcdir=../${srcdir};;
1516 saved_CFLAGS="${CFLAGS}"
1517 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1518 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1519 ${realsrcdir}/configure \
1520 --enable-languages=${enable_languages-all} \
1521 --target=$target_alias --host=$build_alias --build=$build_alias
1522 CFLAGS="${saved_CFLAGS}"
1524 # We just finished tests for the build machine, so rename
1525 # the file auto-build.h in the gcc directory.
1526 mv auto-host.h ../auto-build.h
1529 build_auto=auto-build.h
1531 AC_SUBST(build_subdir)
1533 tm_file="${tm_file} defaults.h"
1534 tm_p_file="${tm_p_file} tm-preds.h"
1535 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1536 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1537 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1538 # put this back in temporarily.
1539 xm_file="auto-host.h ansidecl.h ${xm_file}"
1546 # Compile in configure arguments.
1547 if test -f configargs.h ; then
1548 # Being re-configured.
1549 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1550 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1552 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1555 # Double all backslashes and backslash all quotes to turn
1556 # gcc_config_arguments into a C string.
1557 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1558 $gcc_config_arguments
1560 gcc_config_arguments_str=`cat conftest.out`
1563 cat > configargs.h <<EOF
1564 /* Generated automatically. */
1565 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1566 static const char thread_model[] = "$thread_file";
1568 static const struct {
1569 const char *name, *value;
1570 } configure_default_options[] = $configure_default_options;
1575 gcc_BASEVER=`cat $srcdir/BASE-VER`
1576 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1577 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1578 if test -f $srcdir/REVISION ; then
1579 gcc_REVISION=`cat $srcdir/REVISION`
1583 cat > plugin-version.h <<EOF
1584 #include "configargs.h"
1586 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1587 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1588 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1589 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1591 static char basever[] = "$gcc_BASEVER";
1592 static char datestamp[] = "$gcc_DATESTAMP";
1593 static char devphase[] = "$gcc_DEVPHASE";
1594 static char revision[] = "$gcc_REVISION";
1596 /* FIXME plugins: We should make the version information more precise.
1597 One way to do is to add a checksum. */
1599 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1601 configuration_arguments};
1605 # Internationalization
1606 ZW_GNU_GETTEXT_SISTER_DIR
1608 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1609 # -liconv on the link line twice.
1610 case "$LIBINTL" in *$LIBICONV*)
1614 AC_ARG_ENABLE(secureplt,
1615 [AS_HELP_STRING([--enable-secureplt],
1616 [enable -msecure-plt by default for PowerPC])],
1619 AC_ARG_ENABLE(leading-mingw64-underscores,
1620 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1621 [enable leading underscores on 64 bit mingw targets]),
1623 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1624 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1625 [Define if we should use leading underscore on 64 bit mingw targets])])
1628 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1631 AC_ARG_ENABLE(frame-pointer,
1632 [AS_HELP_STRING([--enable-frame-pointer],
1633 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1636 linux* | darwin[[8912]]*)
1637 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1639 enable_frame_pointer=no
1642 enable_frame_pointer=yes
1647 # Windows32 Registry support for specifying GCC installation paths.
1648 AC_ARG_ENABLE(win32-registry,
1649 [AS_HELP_STRING([--disable-win32-registry],
1650 [disable lookup of installation paths in the
1651 Registry on Windows hosts])
1652 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1653 AS_HELP_STRING([--enable-win32-registry=KEY],
1654 [use KEY instead of GCC version as the last portion
1655 of the registry key])],,)
1658 win32 | pe | cygwin* | mingw32* | uwin*)
1659 if test "x$enable_win32_registry" != xno; then
1660 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1663 if test "x$enable_win32_registry" != xno; then
1664 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1665 [Define to 1 if installation paths should be looked up in the Windows
1666 Registry. Ignored on non-Windows hosts.])
1668 if test "x$enable_win32_registry" != xyes \
1669 && test "x$enable_win32_registry" != x; then
1670 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1671 [Define to be the last component of the Windows registry key under which
1672 to look for installation paths. The full key used will be
1673 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1674 The default is the GCC version number.])
1680 # Get an absolute path to the GCC top-level source directory
1681 holddir=`${PWDCMD-pwd}`
1683 topdir=`${PWDCMD-pwd}`
1686 # Conditionalize the makefile for this host machine.
1688 for f in ${host_xmake_file}
1690 if test -f ${srcdir}/config/$f
1692 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1696 # Conditionalize the makefile for this target machine.
1698 for f in ${tmake_file}
1700 if test -f ${srcdir}/config/$f
1702 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1705 tmake_file="${tmake_file_}"
1707 out_object_file=`basename $out_file .c`.o
1708 common_out_object_file=`basename $common_out_file .c`.o
1710 tm_file_list="options.h"
1711 tm_include_list="options.h insn-constants.h"
1712 for f in $tm_file; do
1715 f=`echo $f | sed 's/^..//'`
1716 tm_file_list="${tm_file_list} $f"
1717 tm_include_list="${tm_include_list} $f"
1720 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1721 tm_include_list="${tm_include_list} $f"
1724 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1725 tm_include_list="${tm_include_list} config/$f"
1732 for f in $tm_p_file; do
1735 tm_p_file_list="${tm_p_file_list} $f"
1736 tm_p_include_list="${tm_p_include_list} $f"
1739 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1740 tm_p_include_list="${tm_p_include_list} config/$f"
1746 for f in $xm_file; do
1749 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1750 xm_include_list="${xm_include_list} $f"
1753 xm_file_list="${xm_file_list} $f"
1754 xm_include_list="${xm_include_list} $f"
1757 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1758 xm_include_list="${xm_include_list} config/$f"
1764 host_xm_include_list=
1765 for f in $host_xm_file; do
1768 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1769 host_xm_include_list="${host_xm_include_list} $f"
1772 host_xm_file_list="${host_xm_file_list} $f"
1773 host_xm_include_list="${host_xm_include_list} $f"
1776 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1777 host_xm_include_list="${host_xm_include_list} config/$f"
1783 for f in $build_xm_file; do
1786 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1787 build_xm_include_list="${build_xm_include_list} $f"
1789 auto-build.h | auto-host.h )
1790 build_xm_file_list="${build_xm_file_list} $f"
1791 build_xm_include_list="${build_xm_include_list} $f"
1794 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1795 build_xm_include_list="${build_xm_include_list} config/$f"
1800 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1801 # cross-compiler which does not use the native headers and libraries.
1802 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1803 CROSS= AC_SUBST(CROSS)
1804 ALL=all.internal AC_SUBST(ALL)
1805 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1807 if test "x$with_build_sysroot" != x; then
1808 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1810 # This value is used, even on a native system, because
1811 # CROSS_SYSTEM_HEADER_DIR is just
1812 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1813 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1816 if test x$host != x$target
1818 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1820 SYSTEM_HEADER_DIR=$build_system_header_dir
1821 case "$host","$target" in
1822 # Darwin crosses can use the host system's libraries and headers,
1823 # because of the fat library support. Of course, it must be the
1824 # same version of Darwin on both sides. Allow the user to
1825 # just say --target=foo-darwin without a version number to mean
1826 # "the version on this system".
1827 *-*-darwin*,*-*-darwin*)
1828 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1829 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1830 if test $hostos = $targetos -o $targetos = darwin ; then
1832 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1837 i?86-*-*,x86_64-*-* \
1838 | powerpc*-*-*,powerpc64*-*-*)
1839 CROSS="$CROSS -DNATIVE_CROSS" ;;
1844 if test "x$with_headers" = x; then
1851 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1852 SYSTEM_HEADER_DIR=$build_system_header_dir
1855 # If this is a cross-compiler that does not
1856 # have its own set of headers then define
1859 # If this is using newlib, without having the headers available now,
1860 # then define inhibit_libc in LIBGCC2_CFLAGS.
1861 # This prevents libgcc2 from containing any code which requires libc
1863 : ${inhibit_libc=false}
1864 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1865 test x$with_newlib = xyes ; } &&
1866 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1869 AC_SUBST(inhibit_libc)
1871 # When building gcc with a cross-compiler, we need to adjust things so
1872 # that the generator programs are still built with the native compiler.
1873 # Also, we cannot run fixincludes.
1875 # These are the normal (build=host) settings:
1876 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1877 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
1878 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1879 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
1880 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1881 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1883 # And these apply if build != host, or we are generating coverage data
1884 if test x$build != x$host || test "x$coverage_flags" != x
1886 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1887 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1890 # Expand extra_headers to include complete path.
1891 # This substitutes for lots of t-* files.
1893 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1894 for file in ${extra_headers} ; do
1895 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1898 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1899 if test x"$use_gcc_tgmath" = xyes
1900 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1903 # Define collect2 in Makefile.
1904 case $host_can_use_collect2 in
1906 *) collect2='collect2$(exeext)' ;;
1908 AC_SUBST([collect2])
1910 # Add a definition of USE_COLLECT2 if system wants one.
1911 case $use_collect2 in
1912 no) use_collect2= ;;
1915 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1916 xm_defines="${xm_defines} USE_COLLECT2"
1917 case $host_can_use_collect2 in
1919 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1925 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1926 [Define to the name of the LTO plugin DSO that must be
1927 passed to the linker's -plugin=LIB option.])
1929 # ---------------------------
1930 # Assembler & linker features
1931 # ---------------------------
1933 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1934 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1935 # However when ld-new is first executed from the build tree, libtool will
1936 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1937 # to the build tree. While doing this we need to use the previous-stage
1938 # linker, or we have an infinite loop. The presence of a shell script as
1939 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1940 # the gcc/collect-ld script. So we need to know how libtool works, or
1941 # exec-tool will fail.
1943 m4_defun([_LT_CONFIG_COMMANDS], [])
1946 AC_SUBST(enable_fast_install)
1948 # Identify the assembler which will work hand-in-glove with the newly
1949 # built GCC, so that we can examine its features. This is the assembler
1950 # which will be driven by the driver program.
1952 # If build != host, and we aren't building gas in-tree, we identify a
1953 # build->target assembler and hope that it will have the same features
1954 # as the host->target assembler we'll be using.
1955 gcc_cv_gas_major_version=
1956 gcc_cv_gas_minor_version=
1957 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1959 m4_pattern_allow([AS_FOR_TARGET])dnl
1960 AS_VAR_SET_IF(gcc_cv_as,, [
1961 if test -x "$DEFAULT_ASSEMBLER"; then
1962 gcc_cv_as="$DEFAULT_ASSEMBLER"
1963 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1964 && test -f ../gas/Makefile \
1965 && test x$build = x$host; then
1966 gcc_cv_as=../gas/as-new$build_exeext
1967 elif test -x as$build_exeext; then
1968 # Build using assembler in the current directory.
1969 gcc_cv_as=./as$build_exeext
1970 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1971 gcc_cv_as="$AS_FOR_TARGET"
1973 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1976 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1977 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1978 case "$ORIGINAL_AS_FOR_TARGET" in
1979 ./as | ./as$build_exeext) ;;
1980 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1983 AC_MSG_CHECKING(what assembler to use)
1984 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1985 # Single tree build which includes gas. We want to prefer it
1986 # over whatever linker top-level may have detected, since
1987 # we'll use what we're building after installation anyway.
1988 AC_MSG_RESULT(newly built gas)
1990 _gcc_COMPUTE_GAS_VERSION
1991 in_tree_gas_is_elf=no
1992 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1993 || (grep 'obj_format = multi' ../gas/Makefile \
1994 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1996 in_tree_gas_is_elf=yes
1999 AC_MSG_RESULT($gcc_cv_as)
2003 # Identify the linker which will work hand-in-glove with the newly
2004 # built GCC, so that we can examine its features. This is the linker
2005 # which will be driven by the driver program.
2007 # If build != host, and we aren't building gas in-tree, we identify a
2008 # build->target linker and hope that it will have the same features
2009 # as the host->target linker we'll be using.
2010 gcc_cv_gld_major_version=
2011 gcc_cv_gld_minor_version=
2012 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2013 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2015 AS_VAR_SET_IF(gcc_cv_ld,, [
2016 if test -x "$DEFAULT_LINKER"; then
2017 gcc_cv_ld="$DEFAULT_LINKER"
2018 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2019 && test -f ../ld/Makefile \
2020 && test x$build = x$host; then
2021 gcc_cv_ld=../ld/ld-new$build_exeext
2022 elif test -x collect-ld$build_exeext; then
2023 # Build using linker in the current directory.
2024 gcc_cv_ld=./collect-ld$build_exeext
2025 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2026 gcc_cv_ld="$LD_FOR_TARGET"
2028 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2031 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2032 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2033 # if the PLUGIN_LD is set ld-new, just have it as ld
2034 # as that is the installed named.
2035 if test x$PLUGIN_LD_SUFFIX = xld-new \
2036 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2039 AC_ARG_WITH(plugin-ld,
2040 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2041 [if test x"$withval" != x; then
2042 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2043 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2045 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2046 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2048 # Check to see if we are using gold instead of ld
2049 AC_MSG_CHECKING(whether we are using gold)
2051 if test x$gcc_cv_ld != x; then
2052 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2053 | grep "GNU gold" > /dev/null; then
2057 AC_MSG_RESULT($ld_is_gold)
2059 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2060 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2061 case "$ORIGINAL_LD_FOR_TARGET" in
2062 ./collect-ld | ./collect-ld$build_exeext) ;;
2063 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2066 AC_MSG_CHECKING(what linker to use)
2067 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2068 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2069 # Single tree build which includes ld. We want to prefer it
2070 # over whatever linker top-level may have detected, since
2071 # we'll use what we're building after installation anyway.
2072 AC_MSG_RESULT(newly built ld)
2074 in_tree_ld_is_elf=no
2075 if (grep 'EMUL = .*elf' ../ld/Makefile \
2076 || grep 'EMUL = .*linux' ../ld/Makefile \
2077 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2078 in_tree_ld_is_elf=yes
2079 elif test "$ld_is_gold" = yes; then
2080 in_tree_ld_is_elf=yes
2082 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
2085 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2086 if test x$gcc_cv_gld_version != x; then
2090 case $gcc_cv_gld_version in
2093 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2096 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2097 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2100 AC_MSG_RESULT($gcc_cv_ld)
2104 # Figure out what nm we will be using.
2105 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2106 AS_VAR_SET_IF(gcc_cv_nm,, [
2107 if test -f $gcc_cv_binutils_srcdir/configure.in \
2108 && test -f ../binutils/Makefile \
2109 && test x$build = x$host; then
2110 gcc_cv_nm=../binutils/nm-new$build_exeext
2111 elif test -x nm$build_exeext; then
2112 gcc_cv_nm=./nm$build_exeext
2113 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2114 gcc_cv_nm="$NM_FOR_TARGET"
2116 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2119 AC_MSG_CHECKING(what nm to use)
2120 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2121 # Single tree build which includes binutils.
2122 AC_MSG_RESULT(newly built nm)
2125 AC_MSG_RESULT($gcc_cv_nm)
2129 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2130 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2131 case "$ORIGINAL_NM_FOR_TARGET" in
2132 ./nm | ./nm$build_exeext) ;;
2133 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2137 # Figure out what objdump we will be using.
2138 AS_VAR_SET_IF(gcc_cv_objdump,, [
2139 if test -f $gcc_cv_binutils_srcdir/configure.in \
2140 && test -f ../binutils/Makefile \
2141 && test x$build = x$host; then
2142 # Single tree build which includes binutils.
2143 gcc_cv_objdump=../binutils/objdump$build_exeext
2144 elif test -x objdump$build_exeext; then
2145 gcc_cv_objdump=./objdump$build_exeext
2146 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2147 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2149 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2152 AC_MSG_CHECKING(what objdump to use)
2153 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2154 # Single tree build which includes binutils.
2155 AC_MSG_RESULT(newly built objdump)
2156 elif test x$gcc_cv_objdump = x; then
2157 AC_MSG_RESULT(not found)
2159 AC_MSG_RESULT($gcc_cv_objdump)
2162 # Figure out what readelf we will be using.
2163 AS_VAR_SET_IF(gcc_cv_readelf,, [
2164 if test -f $gcc_cv_binutils_srcdir/configure.in \
2165 && test -f ../binutils/Makefile \
2166 && test x$build = x$host; then
2167 # Single tree build which includes binutils.
2168 gcc_cv_readelf=../binutils/readelf$build_exeext
2169 elif test -x readelf$build_exeext; then
2170 gcc_cv_readelf=./readelf$build_exeext
2172 AC_PATH_PROG(gcc_cv_readelf, readelf)
2175 AC_MSG_CHECKING(what readelf to use)
2176 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2177 # Single tree build which includes binutils.
2178 AC_MSG_RESULT(newly built readelf)
2179 elif test x$gcc_cv_readelf = x; then
2180 AC_MSG_RESULT(not found)
2182 AC_MSG_RESULT($gcc_cv_readelf)
2185 # Figure out what assembler alignment features are present.
2186 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2190 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2191 [Define if your assembler supports .balign and .p2align.])])
2193 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2196 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2197 [Define if your assembler supports specifying the maximum number
2198 of bytes to skip when using the GAS .p2align command.])])
2200 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2203 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2204 [Define if your assembler supports .literal16.])])
2206 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2208 [conftest_label1: .word 0
2210 conftest_label2: .word 0
2212 [if test x$gcc_cv_nm != x; then
2213 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2214 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2215 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2217 else gcc_cv_as_subsection_m1=yes
2219 rm -f conftest.nm1 conftest.nm2
2221 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2222 [Define if your assembler supports .subsection and .subsection -1 starts
2223 emitting at the beginning of your section.])])
2225 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2228 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2230 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2232 [ .weakref foobar, barfnot],,
2233 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2235 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2238 .NSUBSPA $CODE$,COMDAT],,
2239 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2241 # .hidden needs to be supported in both the assembler and the linker,
2242 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2243 # This is irritatingly difficult to feature test for; we have to check the
2244 # date string after the version number. If we've got an in-tree
2245 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2247 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2248 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2252 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2253 # STV_HIDDEN, so disable .hidden support if so.
2255 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2256 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2257 cat > conftest.s <<EOF
2264 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2265 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2266 grep '\.hidden default' > /dev/null; then
2269 gcc_cv_as_hidden=yes
2272 # Assume bug is present if objdump is missing.
2277 gcc_cv_as_hidden=yes
2282 # Darwin as has some visibility support, though with a different syntax.
2283 gcc_cv_as_hidden=yes
2287 # gnu_indirect_function type is an extension proposed at
2288 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2289 # selection of function implementation
2290 AC_ARG_ENABLE(gnu-indirect-function,
2291 [AS_HELP_STRING([--enable-gnu-indirect-function],
2292 [enable the use of the @gnu_indirect_function to glibc systems])],
2293 [case $enable_gnu_indirect_function in
2295 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2296 Valid choices are 'yes' and 'no'.]) ;;
2298 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2299 if test x$enable_gnu_indirect_function = xyes; then
2300 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2301 [Define if your system supports gnu indirect functions.])
2305 if test $in_tree_ld != yes ; then
2306 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2307 if echo "$ld_ver" | grep GNU > /dev/null; then
2308 if test x"$ld_is_gold" = xyes; then
2309 # GNU gold --version looks like this:
2311 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2313 # We extract the binutils version which is more familiar and specific
2314 # than the gold version.
2315 ld_vers=`echo $ld_ver | sed -n \
2316 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2318 # GNU ld --version looks like this:
2320 # GNU ld (GNU Binutils) 2.21.51.20110225
2321 ld_vers=`echo $ld_ver | sed -n \
2322 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2324 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2325 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2326 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2327 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2331 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2334 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2335 # /usr/ccs/bin/ld has been configured.
2336 ld_ver=`$gcc_cv_ld -V 2>&1`
2337 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2338 ld_vers=`echo $ld_ver | sed -n \
2339 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2340 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2341 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2349 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2350 [[if test $in_tree_ld = yes ; then
2352 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2353 && test $in_tree_ld_is_elf = yes; then
2354 gcc_cv_ld_hidden=yes
2357 gcc_cv_ld_hidden=yes
2358 if test x"$ld_is_gold" = xyes; then
2360 elif echo "$ld_ver" | grep GNU > /dev/null; then
2362 mmix-knuth-mmixware)
2363 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2367 if test 0"$ld_date" -lt 20020404; then
2368 if test -n "$ld_date"; then
2369 # If there was date string, but was earlier than 2002-04-04, fail
2371 elif test -z "$ld_vers"; then
2372 # If there was no date string nor ld version number, something is wrong
2375 test -z "$ld_vers_patch" && ld_vers_patch=0
2376 if test "$ld_vers_major" -lt 2; then
2378 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2379 gcc_cv_ld_hidden="no"
2380 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2388 # Darwin ld has some visibility support.
2389 gcc_cv_ld_hidden=yes
2391 hppa64*-*-hpux* | ia64*-*-hpux*)
2392 gcc_cv_ld_hidden=yes
2394 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2395 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2396 # .symbolic was only added in Solaris 9 12/02.
2397 gcc_cv_ld_hidden=yes
2405 libgcc_visibility=no
2406 AC_SUBST(libgcc_visibility)
2407 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2408 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2409 libgcc_visibility=yes
2410 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2411 [Define if your assembler and linker support .hidden.])
2414 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2415 gcc_cv_ld_ro_rw_mix=unknown
2416 if test $in_tree_ld = yes ; then
2417 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2418 && test $in_tree_ld_is_elf = yes; then
2419 gcc_cv_ld_ro_rw_mix=read-write
2421 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2422 echo '.section myfoosect, "a"' > conftest1.s
2423 echo '.section myfoosect, "aw"' > conftest2.s
2424 echo '.byte 1' >> conftest2.s
2425 echo '.section myfoosect, "a"' > conftest3.s
2426 echo '.byte 0' >> conftest3.s
2427 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2428 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2429 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2430 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2431 conftest2.o conftest3.o > /dev/null 2>&1; then
2432 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2433 | sed -e '/myfoosect/!d' -e N`
2434 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2435 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2436 gcc_cv_ld_ro_rw_mix=read-only
2438 gcc_cv_ld_ro_rw_mix=read-write
2443 rm -f conftest.* conftest[123].*
2446 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2447 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2448 [Define if your linker links a mix of read-only
2449 and read-write sections into a read-write section.])
2451 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2453 gcc_AC_INITFINI_ARRAY
2455 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2456 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2464 [[# GAS versions before 2.11 do not support uleb128,
2465 # despite appearing to.
2466 # ??? There exists an elf-specific test that will crash
2467 # the assembler. Perhaps it's better to figure out whether
2468 # arbitrary sections are supported and try the test.
2469 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2470 if echo "$as_ver" | grep GNU > /dev/null; then
2471 as_vers=`echo $as_ver | sed -n \
2472 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2473 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2474 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2475 if test $as_major -eq 2 && test $as_minor -lt 11
2477 else gcc_cv_as_leb128=yes
2480 [AC_DEFINE(HAVE_AS_LEB128, 1,
2481 [Define if your assembler supports .sleb128 and .uleb128.])])
2483 # Check if we have assembler support for unwind directives.
2484 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2491 .cfi_escape 1, 2, 3, 4, 5
2495 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2496 # read-only and read-write sections, we need to make sure that the
2497 # assembler used emits read-write .eh_frame sections.
2498 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2499 if test "x$gcc_cv_objdump" != x; then
2500 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2501 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2502 gcc_cv_as_cfi_directive=no
2505 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2506 # On Solaris/x86, make sure that GCC and gas agree on using
2507 # read-only .eh_frame sections for 64-bit.
2508 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2509 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2510 sed -e /.eh_frame/!d -e N | \
2511 grep READONLY > /dev/null; then
2512 gcc_cv_as_cfi_directive=yes
2514 gcc_cv_as_cfi_directive=no
2518 gcc_cv_as_cfi_directive=yes
2523 # no objdump, err on the side of caution
2524 gcc_cv_as_cfi_directive=no
2527 gcc_cv_as_cfi_directive=yes
2531 gcc_cv_as_cfi_directive=yes
2534 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2535 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2539 .cfi_adjust_cfa_offset 64
2541 .cfi_adjust_cfa_offset 128
2544 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2545 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2546 gcc_cv_as_cfi_advance_working=yes
2550 # no objdump, err on the side of caution
2551 gcc_cv_as_cfi_advance_working=no
2553 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2554 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2555 [`if test $gcc_cv_as_cfi_directive = yes \
2556 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2557 [Define 0/1 if your assembler supports CFI directives.])
2559 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2560 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2561 gcc_cv_as_cfi_personality_directive, ,,
2564 .cfi_personality 0, symbol
2566 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2567 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2568 then echo 1; else echo 0; fi`],
2569 [Define 0/1 if your assembler supports .cfi_personality.])
2571 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2572 gcc_cv_as_cfi_sections_directive, ,,
2574 .cfi_sections .debug_frame, .eh_frame
2578 win32 | pe | cygwin* | mingw32* | uwin*)
2579 # Need to check that we generated the correct relocation for the
2580 # .debug_frame section. This was fixed for binutils 2.21.
2581 gcc_cv_as_cfi_sections_directive=no
2582 if test "x$gcc_cv_objdump" != x; then
2583 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2584 grep secrel > /dev/null; then
2585 gcc_cv_as_cfi_sections_directive=yes
2590 gcc_cv_as_cfi_sections_directive=yes
2593 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2594 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2595 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2596 then echo 1; else echo 0; fi`],
2597 [Define 0/1 if your assembler supports .cfi_sections.])
2599 # GAS versions up to and including 2.11.0 may mis-optimize
2601 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2609 .section .eh_frame,"aw",@progbits
2611 .4byte .LECIE1-.LSCIE1
2625 .4byte .LEFDE1-.LASFDE1
2627 .4byte .LASFDE1-__FRAME_BEGIN__
2635 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2636 cat > conftest.lit <<EOF
2637 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2638 0010 01000000 12000000 18000000 00000000 ................
2639 0020 08000000 04080000 0044 .........D @&t@
2641 cat > conftest.big <<EOF
2642 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2643 0010 00000001 00000012 00000018 00000000 ................
2644 0020 00000008 04000000 0844 .........D @&t@
2646 # If the assembler didn't choke, and we can objdump,
2647 # and we got the correct data, then succeed.
2648 # The text in the here-document typically retains its unix-style line
2649 # endings, while the output of objdump will use host line endings.
2650 # Therefore, use diff -b for the comparisons.
2651 if test x$gcc_cv_objdump != x \
2652 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2653 | tail -3 > conftest.got \
2654 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2655 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2657 gcc_cv_as_eh_frame=yes
2658 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2659 gcc_cv_as_eh_frame=buggy
2661 # Uh oh, what do we do now?
2662 gcc_cv_as_eh_frame=no
2665 if test $gcc_cv_as_eh_frame = buggy; then
2666 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2667 [Define if your assembler mis-optimizes .eh_frame data.])
2670 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2671 [elf,2,12,0], [--fatal-warnings],
2672 [.section .rodata.str, "aMS", @progbits, 1])
2673 if test $gcc_cv_as_shf_merge = no; then
2674 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2675 [elf,2,12,0], [--fatal-warnings],
2676 [.section .rodata.str, "aMS", %progbits, 1])
2678 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2679 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2680 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2682 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2683 gcc_cv_as_comdat_group,
2684 [elf,2,16,0], [--fatal-warnings],
2685 [.section .text,"axG",@progbits,.foo,comdat])
2686 if test $gcc_cv_as_comdat_group = yes; then
2687 gcc_cv_as_comdat_group_percent=no
2688 gcc_cv_as_comdat_group_group=no
2690 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2691 gcc_cv_as_comdat_group_percent,
2692 [elf,2,16,0], [--fatal-warnings],
2693 [.section .text,"axG",%progbits,.foo,comdat])
2694 if test $gcc_cv_as_comdat_group_percent = yes; then
2695 gcc_cv_as_comdat_group_group=no
2697 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2698 gcc_cv_as_comdat_group_group=no
2701 # Sun as uses a completely different syntax.
2706 .group foo,".text%foo",#comdat
2707 .section ".text%foo", #alloc,#execinstr,#progbits
2712 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2714 .group foo,.text%foo,#comdat
2715 .section .text%foo, "ax", @progbits
2721 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2722 gcc_cv_as_comdat_group_group,
2728 if test x"$ld_is_gold" = xyes; then
2730 elif test $in_tree_ld = yes ; then
2732 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2733 && test $in_tree_ld_is_elf = yes; then
2736 elif echo "$ld_ver" | grep GNU > /dev/null; then
2738 if test 0"$ld_date" -lt 20050308; then
2739 if test -n "$ld_date"; then
2740 # If there was date string, but was earlier than 2005-03-08, fail
2742 elif test "$ld_vers_major" -lt 2; then
2744 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2751 *-*-solaris2.1[1-9]*)
2753 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2754 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2757 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2758 # least ld version 1.2267.
2759 if test "$ld_vers_major" -gt 1; then
2761 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2763 elif test "$ld_vers_minor" -ge 2267; then
2768 # Assume linkers other than GNU ld don't support COMDAT group.
2774 # Allow overriding the automatic COMDAT group tests above.
2775 AC_ARG_ENABLE(comdat,
2776 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2777 [comdat_group="$enable_comdat"])
2778 if test $comdat_group = no; then
2779 gcc_cv_as_comdat_group=no
2780 gcc_cv_as_comdat_group_percent=no
2781 gcc_cv_as_comdat_group_group=no
2783 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2784 [`if test $gcc_cv_as_comdat_group = yes \
2785 || test $gcc_cv_as_comdat_group_percent = yes \
2786 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2787 [Define 0/1 if your assembler and linker support COMDAT groups.])
2789 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2790 gcc_cv_as_discriminator,
2794 .loc 1 1 0 discriminator 1],,
2795 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2796 [Define if your assembler supports the .loc discriminator sub-directive.])])
2798 # Thread-local storage - the check is heavily parameterized.
2807 .section ".tdata","awT",@progbits
2810 ldq $27,__tls_get_addr($29) !literal!1
2811 lda $16,foo($29) !tlsgd!1
2812 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2813 ldq $27,__tls_get_addr($29) !literal!2
2814 lda $16,foo($29) !tlsldm!2
2815 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2816 ldq $1,foo($29) !gotdtprel
2817 ldah $2,foo($29) !dtprelhi
2818 lda $3,foo($2) !dtprello
2819 lda $4,foo($29) !dtprel
2820 ldq $1,foo($29) !gottprel
2821 ldah $2,foo($29) !tprelhi
2822 lda $3,foo($2) !tprello
2823 lda $4,foo($29) !tprel'
2826 tls_as_opt=--fatal-warnings
2828 cris-*-*|crisv32-*-*)
2830 .section ".tdata","awT",@progbits
2837 tls_as_opt=--fatal-warnings
2841 .section ".tdata","awT",@progbits
2853 .section ".tdata","awT",@progbits
2857 addil LT%foo-$tls_gdidx$,gp
2858 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2861 addil LT%foo-$tls_ldidx$,gp
2863 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2864 addil LR%foo-$tls_dtpoff$,%ret0
2865 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2867 addil LT%foo-$tls_ieoff$,gp
2868 ldw RT%foo-$tls_ieoff$(%r1),%t2
2871 addil LR%foo-$tls_leoff$,%t1
2872 ldo RR%foo-$tls_leoff$(%r1),%t2'
2875 tls_as_opt=--fatal-warnings
2879 .section ".tdata","awT",%progbits
2890 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2892 i[34567]86-*-solaris2.*)
2894 tga_func=___tls_get_addr
2896 x86_64-*-solaris2.1[0-9]*)
2898 tga_func=__tls_get_addr
2904 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2906 .section .tdata,"awt",@progbits'
2910 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2911 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2915 .section ".tdata","awT",@progbits'
2918 tls_as_opt="--fatal-warnings"
2920 conftest_s="$conftest_s
2924 leal foo@tlsgd(,%ebx,1), %eax
2925 leal foo@tlsldm(%ebx), %eax
2926 leal foo@dtpoff(%eax), %edx
2927 movl foo@gottpoff(%ebx), %eax
2928 subl foo@gottpoff(%ebx), %eax
2929 addl foo@gotntpoff(%ebx), %eax
2930 movl foo@indntpoff, %eax
2931 movl \$foo@tpoff, %eax
2932 subl \$foo@tpoff, %eax
2933 leal foo@ntpoff(%ecx), %eax"
2937 .section ".tdata","awT",@progbits
2941 leaq foo@TLSGD(%rip), %rdi
2942 leaq foo@TLSLD(%rip), %rdi
2943 leaq foo@DTPOFF(%rax), %rdx
2944 movq foo@GOTTPOFF(%rip), %rax
2945 movq $foo@TPOFF, %rax'
2948 tls_as_opt=--fatal-warnings
2952 .section ".tdata","awT",@progbits
2955 addl r16 = @ltoff(@dtpmod(foo#)), gp
2956 addl r17 = @ltoff(@dtprel(foo#)), gp
2957 addl r18 = @ltoff(@tprel(foo#)), gp
2958 addl r19 = @dtprel(foo#), gp
2959 adds r21 = @dtprel(foo#), r13
2960 movl r23 = @dtprel(foo#)
2961 addl r20 = @tprel(foo#), gp
2962 adds r22 = @tprel(foo#), r13
2963 movl r24 = @tprel(foo#)'
2966 tls_as_opt=--fatal-warnings
2970 .section .tdata,"awT",@progbits
2974 addiu $4, $28, %tlsgd(x)
2975 addiu $4, $28, %tlsldm(x)
2976 lui $4, %dtprel_hi(x)
2977 addiu $4, $4, %dtprel_lo(x)
2978 lw $4, %gottprel(x)($28)
2979 lui $4, %tprel_hi(x)
2980 addiu $4, $4, %tprel_lo(x)'
2983 tls_as_opt='-32 --fatal-warnings'
2987 .section .tdata,"awT",@progbits
2992 move.l x@TLSGD(%a5),%a0
2993 move.l x@TLSLDM(%a5),%a0
2994 move.l x@TLSLDO(%a5),%a0
2995 move.l x@TLSIE(%a5),%a0
2996 move.l x@TLSLE(%a5),%a0'
2999 tls_as_opt='--fatal-warnings'
3003 .section ".tdata","awT",%progbits
3007 add x0, x0, #:tlsgd_lo12:x
3012 tls_as_opt='--fatal-warnings'
3016 .extern __get_tpointer
3034 .section ".tdata","awT",@progbits
3042 addi 3,31,ld0@got@tlsgd
3044 addi 3,31,x1@got@tlsld
3047 addis 9,3,x2@dtprel@ha
3048 addi 9,9,x2@dtprel@l
3049 lwz 9,x3@got@tprel(31)
3052 addis 9,2,x2@tprel@ha
3053 addi 9,9,x2@tprel@l'
3056 tls_as_opt="-a32 --fatal-warnings"
3060 .section ".tdata","awT",@progbits
3068 addi 3,2,ld0@got@tlsgd
3074 addi 3,2,x1@got@tlsld
3080 addis 9,3,x2@dtprel@ha
3081 addi 9,9,x2@dtprel@l
3084 ld 9,x3@got@dtprel(2)
3090 tls_as_opt="-a64 --fatal-warnings"
3094 .section ".tdata","awT",@progbits
3103 l %r1,foo@GOTNTPOFF(%r12)
3104 l %r1,0(%r1):tls_load:foo
3105 bas %r14,0(%r1,%r13):tls_gdcall:foo
3106 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3109 tls_as_opt="-m31 --fatal-warnings"
3113 .section ".tdata","awT",@progbits
3121 lg %r1,foo@GOTNTPOFF(%r12)
3122 larl %r1,foo@INDNTPOFF
3123 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3124 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3127 tls_as_opt="-m64 -Aesame --fatal-warnings"
3129 sh-*-* | sh[34]-*-*)
3131 .section ".tdata","awT",@progbits
3141 tls_as_opt=--fatal-warnings
3145 sparc*-sun-solaris2.*)
3147 tga_func=__tls_get_addr
3153 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3155 .section ".tdata",#alloc,#write,#tls'
3160 .section ".tdata","awT",@progbits'
3163 tls_as_opt="-32 --fatal-warnings"
3165 conftest_s="$conftest_s
3168 sethi %tgd_hi22(foo), %o0
3169 add %o0, %tgd_lo10(foo), %o1
3170 add %l7, %o1, %o0, %tgd_add(foo)
3171 call __tls_get_addr, %tgd_call(foo)
3172 sethi %tldm_hi22(foo), %l1
3173 add %l1, %tldm_lo10(foo), %l2
3174 add %l7, %l2, %o0, %tldm_add(foo)
3175 call __tls_get_addr, %tldm_call(foo)
3176 sethi %tldo_hix22(foo), %l3
3177 xor %l3, %tldo_lox10(foo), %l4
3178 add %o0, %l4, %l5, %tldo_add(foo)
3179 sethi %tie_hi22(foo), %o3
3180 add %o3, %tie_lo10(foo), %o3
3181 ld [%l7 + %o3], %o2, %tie_ld(foo)
3182 add %g7, %o2, %o4, %tie_add(foo)
3183 sethi %tle_hix22(foo), %l1
3184 xor %l1, %tle_lox10(foo), %o5
3185 ld [%g7 + %o5], %o1"
3189 .section ".tdata","awT",@progbits
3192 addli r0, zero, tls_gd(foo)
3193 auli r0, zero, tls_gd_ha16(foo)
3194 addli r0, r0, tls_gd_lo16(foo)
3196 addli r0, zero, tls_ie(foo)
3197 auli r0, r0, tls_ie_ha16(foo)
3198 addli r0, r0, tls_ie_lo16(foo)'
3201 tls_as_opt="--fatal-warnings"
3205 .section ".tdata","awT",@progbits
3208 shl16insli r0, zero, hw0_last_tls_gd(foo)
3209 shl16insli r0, zero, hw1_last_tls_gd(foo)
3210 shl16insli r0, r0, hw0_tls_gd(foo)
3212 shl16insli r0, zero, hw1_last_tls_ie(foo)
3213 shl16insli r0, r0, hw0_tls_ie(foo)'
3216 tls_as_opt="--fatal-warnings"
3220 .section ".tdata","awT",@progbits
3223 movi a8, foo@TLSFUNC
3224 movi a10, foo@TLSARG
3225 callx8.tls a8, foo@TLSCALL'
3232 if test "x$enable_tls" = xno ; then
3233 : # TLS explicitly disabled.
3234 elif test "x$enable_tls" = xyes ; then
3235 set_have_as_tls=yes # TLS explicitly enabled.
3236 elif test -z "$tls_first_major"; then
3237 : # If we don't have a check, assume no support.
3239 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3240 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3241 [set_have_as_tls=yes])
3244 # TLS was introduced in the Solaris 9 FCS release. Support for GNU-style
3245 # TLS on x86 was only introduced in Solaris 9 4/04, replacing the earlier
3246 # Sun style that Sun ld and GCC don't support any longer.
3248 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3250 # Check ld and ld.so.1 TLS support.
3251 if echo "$ld_ver" | grep GNU > /dev/null; then
3252 # Assume all interesting versions of GNU ld have TLS support.
3253 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3257 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3259 min_tls_ld_vers_minor=374
3261 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3262 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3263 min_tls_ld_vers_minor=343
3266 if test "$ld_vers_major" -gt 1 || \
3267 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3273 AC_MSG_RESULT($ld_tls_support)
3276 save_LDFLAGS="$LDFLAGS"
3280 AC_MSG_CHECKING(library containing $tga_func)
3281 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3282 # (32-bit x86) only lived in libthread, so check for that. Keep
3283 # set_have_as_tls if found, disable if not.
3284 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3285 # Clear LIBS if we cannot support TLS.
3286 if test $set_have_as_tls = no; then
3289 # Always define LIB_TLS_SPEC, even without TLS support.
3290 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3291 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3292 AC_MSG_RESULT($LIBS)
3295 LDFLAGS="$save_LDFLAGS"
3298 if test $set_have_as_tls = yes ; then
3299 AC_DEFINE(HAVE_AS_TLS, 1,
3300 [Define if your assembler and linker support thread-local storage.])
3303 # Target-specific assembler checks.
3305 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3306 gcc_cv_ld_static_dynamic=no
3307 gcc_cv_ld_static_option='-Bstatic'
3308 gcc_cv_ld_dynamic_option='-Bdynamic'
3309 if test $in_tree_ld = yes ; then
3310 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3311 gcc_cv_ld_static_dynamic=yes
3313 elif test x$gcc_cv_ld != x; then
3314 # Check if linker supports -Bstatic/-Bdynamic option
3315 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3316 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3317 gcc_cv_ld_static_dynamic=yes
3320 # AIX ld uses -b flags
3321 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3322 gcc_cv_ld_static_dynamic=yes
3323 gcc_cv_ld_static_option="-bstatic"
3324 gcc_cv_ld_dynamic_option="-bdynamic"
3326 # HP-UX ld uses -a flags to select between shared and archive.
3328 if test x"$gnu_ld" = xno; then
3329 gcc_cv_ld_static_dynamic=yes
3330 gcc_cv_ld_static_option="-aarchive_shared"
3331 gcc_cv_ld_dynamic_option="-adefault"
3334 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3336 gcc_cv_ld_static_dynamic=yes
3341 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3342 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3343 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3344 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3345 [Define to the linker option to disable use of shared objects.])
3346 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3347 [Define to the linker option to enable use of shared objects.])
3349 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3351 if test x"$demangler_in_ld" = xyes; then
3352 AC_MSG_CHECKING(linker --demangle support)
3353 gcc_cv_ld_demangle=no
3354 if test $in_tree_ld = yes; then
3355 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3356 gcc_cv_ld_demangle=yes
3358 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3359 # Check if the GNU linker supports --demangle option
3360 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3361 gcc_cv_ld_demangle=yes
3364 if test x"$gcc_cv_ld_demangle" = xyes; then
3365 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3366 [Define if your linker supports --demangle option.])
3368 AC_MSG_RESULT($gcc_cv_ld_demangle)
3371 AC_MSG_CHECKING(linker plugin support)
3373 if test -f liblto_plugin.la; then
3374 save_ld_ver="$ld_ver"
3375 save_ld_vers_major="$ld_vers_major"
3376 save_ld_vers_minor="$ld_vers_minor"
3377 save_ld_is_gold="$ld_is_gold"
3381 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3383 # FIXME: ld_is_gold?
3384 ld_vers_major="$gcc_cv_gld_major_version"
3385 ld_vers_minor="$gcc_cv_gld_minor_version"
3387 # Determine plugin linker version.
3388 # FIXME: Partial duplicate from above, generalize.
3390 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3391 if echo "$ld_ver" | grep GNU > /dev/null; then
3392 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3394 ld_vers=`echo $ld_ver | sed -n \
3395 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3397 ld_vers=`echo $ld_ver | sed -n \
3398 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3400 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3401 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3406 # Determine plugin support.
3407 if echo "$ld_ver" | grep GNU > /dev/null; then
3408 # Require GNU ld or gold 2.21+ for plugin support by default.
3409 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3411 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3412 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3417 ld_ver="$save_ld_ver"
3418 ld_vers_major="$save_ld_vers_major"
3419 ld_vers_minor="$save_ld_vers_minor"
3420 ld_is_gold="$save_ld_is_gold"
3422 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3423 [Define to the level of your linker's plugin support.])
3424 AC_MSG_RESULT($gcc_cv_lto_plugin)
3427 # All TARGET_ABI_OSF targets.
3428 alpha*-*-linux* | alpha*-*-*bsd*)
3429 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3430 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3433 extbl $3, $2, $3 !lituse_bytoff!1
3434 ldq $2, a($29) !literal!1
3435 ldq $4, b($29) !literal!2
3436 ldq_u $3, 0($2) !lituse_base!1
3437 ldq $27, f($29) !literal!5
3438 jsr $26, ($27), f !lituse_jsr!5
3439 ldah $29, 0($26) !gpdisp!3
3440 lda $0, c($29) !gprel
3441 ldah $1, d($29) !gprelhigh
3442 lda $1, d($1) !gprellow
3443 lda $29, 0($29) !gpdisp!3],,
3444 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3445 [Define if your assembler supports explicit relocations.])])
3446 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3447 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3450 ldq $27, a($29) !literal!1
3451 jsr $26, ($27), a !lituse_jsrdirect!1],,
3452 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3453 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3457 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3458 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3459 [-no-mul-bug-abort], [.text],,
3460 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3461 [Define if your assembler supports the -no-mul-bug-abort option.])])
3465 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3466 [.register %g2, #scratch],,
3467 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3468 [Define if your assembler supports .register.])])
3470 gcc_GAS_CHECK_FEATURE([@%:@nobits], gcc_cv_as_sparc_nobits,,,
3471 [.section "nobits",#alloc,#write,#nobits
3472 .section "progbits",#alloc,#write,#progbits])
3473 AC_DEFINE_UNQUOTED(HAVE_AS_SPARC_NOBITS,
3474 [`if test $gcc_cv_as_sparc_nobits = yes; then echo 1; else echo 0; fi`],
3475 [Define to 1 if your assembler supports #nobits, 0 otherwise.])
3477 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3479 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3480 [Define if your assembler supports -relax option.])])
3482 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3483 gcc_cv_as_sparc_gotdata_op,,
3490 sethi %gdop_hix22(foo), %g1
3491 xor %g1, %gdop_lox10(foo), %g1
3492 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3493 [if test x$gcc_cv_ld != x \
3494 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3495 if test x$gcc_cv_objdump != x; then
3496 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3497 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3498 gcc_cv_as_sparc_gotdata_op=no
3500 gcc_cv_as_sparc_gotdata_op=yes
3505 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3506 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3508 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3509 gcc_cv_as_sparc_ua_pcrel,,
3517 .uaword %r_disp32(foo)],
3518 [if test x$gcc_cv_ld != x \
3519 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3520 gcc_cv_as_sparc_ua_pcrel=yes
3523 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3524 [Define if your assembler and linker support unaligned PC relative relocs.])
3526 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3527 gcc_cv_as_sparc_ua_pcrel_hidden,,
3532 .uaword %r_disp32(foo)
3533 .byte 0x32, 0x33, 0x34
3538 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3539 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3540 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3541 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3542 if $gcc_cv_objdump -R conftest 2> /dev/null \
3543 | grep 'DISP32' > /dev/null 2>&1; then
3546 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3550 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3551 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3552 ]) # unaligned pcrel relocs
3554 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3555 gcc_cv_as_sparc_offsetable_lo10,,
3558 or %g1, %lo(ab) + 12, %g1
3559 or %g1, %lo(ab + 12), %g1],
3560 [if test x$gcc_cv_objdump != x \
3561 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3562 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3563 gcc_cv_as_sparc_offsetable_lo10=yes
3565 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3566 [Define if your assembler supports offsetable %lo().])])
3568 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3569 gcc_cv_as_sparc_fmaf,,
3572 .register %g2, #scratch
3573 .register %g3, #scratch
3575 fmaddd %f0, %f2, %f4, %f6
3576 addxccc %g1, %g2, %g3
3577 fsrl32 %f2, %f4, %f8
3578 fnaddd %f10, %f12, %f14],,
3579 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3580 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3582 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3583 gcc_cv_as_sparc_sparc4,,
3586 .register %g2, #scratch
3587 .register %g3, #scratch
3590 1: cwbneg %g2, %g3, 1f
3593 aes_kexpand0 %f4, %f6, %f8
3594 des_round %f38, %f40, %f42, %f44
3595 camellia_f %f54, %f56, %f58, %f60
3596 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3597 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3598 [Define if your assembler supports SPARC4 instructions.])])
3602 i[34567]86-*-* | x86_64-*-*)
3606 # Full C++ conformance when using a shared libstdc++-v3 requires some
3607 # support from the Cygwin DLL, which in more recent versions exports
3608 # wrappers to aid in interposing and redirecting operators new, delete,
3609 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3610 # are configuring for a version of Cygwin that exports the wrappers.
3611 if test x$host = x$target; then
3612 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3614 # Can't check presence of libc functions during cross-compile, so
3615 # we just have to assume we're building for an up-to-date target.
3616 gcc_ac_cygwin_dll_wrappers=yes
3618 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3619 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3620 [Define if you want to generate code by default that assumes that the
3621 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3624 cygwin* | pe | mingw32* | interix*)
3625 # Recent binutils allows the three-operand form of ".comm" on PE. This
3626 # definition is used unconditionally to initialise the default state of
3627 # the target option variable that governs usage of the feature.
3628 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3629 [2,19,52],,[.comm foo,1,32])
3630 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3631 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3632 [Define if your assembler supports specifying the alignment
3633 of objects allocated using the GAS .comm command.])
3634 # Used for DWARF 2 in PE
3635 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3636 gcc_cv_as_ix86_pe_secrel32,
3642 [if test x$gcc_cv_ld != x \
3643 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3644 gcc_cv_as_ix86_pe_secrel32=yes
3647 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3648 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3649 # Test if the assembler supports the extended form of the .section
3650 # directive that specifies section alignment. LTO support uses this,
3651 # but normally only after installation, so we warn but don't fail the
3652 # configure if LTO is enabled but the assembler does not support it.
3653 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3654 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3655 if test x$gcc_cv_as_section_has_align != xyes; then
3656 case ",$enable_languages," in
3658 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3662 # Test if the assembler supports the section flag 'e' for specifying
3663 # an excluded section.
3664 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3668 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3669 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3670 [Define if your assembler supports specifying the section flag e.])
3674 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3675 gcc_cv_as_ix86_filds,,,
3676 [filds mem; fists mem],,
3677 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3678 [Define if your assembler uses filds and fists mnemonics.])])
3680 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3681 gcc_cv_as_ix86_fildq,,,
3682 [fildq mem; fistpq mem],,
3683 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3684 [Define if your assembler uses fildq and fistq mnemonics.])])
3686 gcc_GAS_CHECK_FEATURE([cmov syntax],
3687 gcc_cv_as_ix86_cmov_sun_syntax,,,
3688 [cmovl.l %edx, %eax],,
3689 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3690 [Define if your assembler supports the Sun syntax for cmov.])])
3692 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3693 gcc_cv_as_ix86_ffreep,,,
3695 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3696 [Define if your assembler supports the ffreep mnemonic.])])
3698 gcc_GAS_CHECK_FEATURE([.quad directive],
3699 gcc_cv_as_ix86_quad,,,
3701 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3702 [Define if your assembler supports the .quad directive.])])
3704 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3705 gcc_cv_as_ix86_sahf,,,
3708 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3709 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3711 gcc_GAS_CHECK_FEATURE([hle prefixes],
3712 gcc_cv_as_ix86_hle,,,
3713 [lock xacquire cmpxchg %esi, (%ecx)],,
3714 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3715 [Define if your assembler supports HLE prefixes.])])
3717 gcc_GAS_CHECK_FEATURE([swap suffix],
3718 gcc_cv_as_ix86_swap,,,
3719 [movl.s %esp, %ebp],,
3720 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3721 [Define if your assembler supports the swap suffix.])])
3723 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3724 gcc_cv_as_ix86_diff_sect_delta,,,
3732 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3733 [Define if your assembler supports the subtraction of symbols in different sections.])])
3735 # These two are used unconditionally by i386.[ch]; it is to be defined
3736 # to 1 if the feature is present, 0 otherwise.
3737 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3738 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3744 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3745 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3746 [Define true if the assembler supports '.long foo@GOTOFF'.])
3748 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3749 gcc_cv_as_ix86_rep_lock_prefix,,,
3755 lock addl %edi, (%eax,%esi)
3756 lock orl $0, (%esp)],,
3757 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3758 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3760 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3761 gcc_cv_as_ix86_tlsgdplt,,,
3762 [call tls_gd@tlsgdplt],
3763 [if test x$gcc_cv_ld != x \
3764 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3765 gcc_cv_as_ix86_tlsgdplt=yes
3768 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3769 [Define if your assembler and linker support @tlsgdplt.])])
3771 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3772 gcc_cv_as_ix86_tlsldmplt,,,
3774 call tls_ld@tlsldmplt],
3775 [if test x$gcc_cv_ld != x \
3776 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3777 gcc_cv_as_ix86_tlsldmplt=yes
3780 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3781 [Define if your assembler and linker support @tlsldmplt.])])
3786 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3787 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3789 addl r15 = @ltoffx(x#), gp
3791 ld8.mov r16 = [[r15]], x#],,
3792 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3793 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3799 *-*-aix*) conftest_s=' .machine "pwr5"
3803 gcc_GAS_CHECK_FEATURE([.machine directive support],
3804 gcc_cv_as_machine_directive,,,
3805 [ .machine ppc7400])
3806 if test x$gcc_cv_as_machine_directive != xyes; then
3807 echo "*** This target requires an assembler supporting \".machine\"" >&2
3808 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3809 test x$build = x$target && exit 1
3813 *) conftest_s=' .machine power4
3818 gcc_GAS_CHECK_FEATURE([mfcr field support],
3819 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3821 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3822 [Define if your assembler supports mfcr field.])])
3825 *-*-aix*) conftest_s=' .machine "pwr5"
3828 *) conftest_s=' .machine power5
3833 gcc_GAS_CHECK_FEATURE([popcntb support],
3834 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3836 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3837 [Define if your assembler supports popcntb field.])])
3840 *-*-aix*) conftest_s=' .machine "pwr5x"
3843 *) conftest_s=' .machine power5
3848 gcc_GAS_CHECK_FEATURE([fp round support],
3849 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3851 [AC_DEFINE(HAVE_AS_FPRND, 1,
3852 [Define if your assembler supports fprnd.])])
3855 *-*-aix*) conftest_s=' .machine "pwr6"
3858 *) conftest_s=' .machine power6
3863 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3864 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3866 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3867 [Define if your assembler supports mffgpr and mftgpr.])])
3870 *-*-aix*) conftest_s=' .csect .text[[PR]]
3872 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3876 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3877 *) conftest_s=' .text
3879 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3882 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3883 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3885 [AC_DEFINE(HAVE_AS_REL16, 1,
3886 [Define if your assembler supports R_PPC_REL16 relocs.])])
3889 *-*-aix*) conftest_s=' .machine "pwr6"
3892 *) conftest_s=' .machine power6
3897 gcc_GAS_CHECK_FEATURE([compare bytes support],
3898 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3900 [AC_DEFINE(HAVE_AS_CMPB, 1,
3901 [Define if your assembler supports cmpb.])])
3904 *-*-aix*) conftest_s=' .machine "pwr6"
3907 *) conftest_s=' .machine power6
3912 gcc_GAS_CHECK_FEATURE([decimal float support],
3913 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3915 [AC_DEFINE(HAVE_AS_DFP, 1,
3916 [Define if your assembler supports DFP instructions.])])
3919 *-*-aix*) conftest_s=' .machine "pwr7"
3922 *) conftest_s=' .machine power7
3927 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3928 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3930 [AC_DEFINE(HAVE_AS_VSX, 1,
3931 [Define if your assembler supports VSX instructions.])])
3934 *-*-aix*) conftest_s=' .machine "pwr7"
3937 *) conftest_s=' .machine power7
3942 gcc_GAS_CHECK_FEATURE([popcntd support],
3943 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3945 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3946 [Define if your assembler supports POPCNTD instructions.])])
3949 *-*-aix*) conftest_s=' .machine "pwr8"
3950 .csect .text[[PR]]';;
3951 *) conftest_s=' .machine power8
3955 gcc_GAS_CHECK_FEATURE([power8 support],
3956 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
3958 [AC_DEFINE(HAVE_AS_POWER8, 1,
3959 [Define if your assembler supports POWER8 instructions.])])
3962 *-*-aix*) conftest_s=' .csect .text[[PR]]
3964 *) conftest_s=' .text
3968 gcc_GAS_CHECK_FEATURE([lwsync support],
3969 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3971 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3972 [Define if your assembler supports LWSYNC instructions.])])
3975 *-*-aix*) conftest_s=' .machine "476"
3978 *) conftest_s=' .machine "476"
3983 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3984 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3986 [AC_DEFINE(HAVE_AS_DCI, 1,
3987 [Define if your assembler supports the DCI/ICI instructions.])])
3989 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3990 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3991 [.gnu_attribute 4,1],,
3992 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3993 [Define if your assembler supports .gnu_attribute.])])
3995 gcc_GAS_CHECK_FEATURE([tls marker support],
3996 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3997 [ bl __tls_get_addr(x@tlsgd)],,
3998 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3999 [Define if your assembler supports arg info for __tls_get_addr.])])
4003 gcc_GAS_CHECK_FEATURE([.ref support],
4004 gcc_cv_as_aix_ref, [2,21,0],,
4005 [ .csect stuff[[rw]]
4011 [AC_DEFINE(HAVE_AS_REF, 1,
4012 [Define if your assembler supports .ref])])
4018 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4019 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4020 [ lw $4,%gp_rel(foo)($4)],,
4021 [if test x$target_cpu_default = x
4022 then target_cpu_default=MASK_EXPLICIT_RELOCS
4023 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4025 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4026 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4027 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4028 [Define if the assembler understands -mno-shared.])])
4030 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4031 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4032 [.gnu_attribute 4,1],,
4033 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4034 [Define if your assembler supports .gnu_attribute.])])
4036 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4037 gcc_cv_as_mips_dtprelword, [2,18,0],,
4038 [.section .tdata,"awT",@progbits
4042 .dtprelword x+0x8000],,
4043 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4044 [Define if your assembler supports .dtprelword.])])
4046 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4047 gcc_cv_as_mips_dspr1_mult,,,
4057 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4058 [Define if your assembler supports DSPR1 mult.])])
4060 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4061 gcc_cv_as_ld_jalr_reloc=no
4062 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4063 if test $in_tree_ld = yes ; then
4064 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4065 && test $in_tree_ld_is_elf = yes; then
4066 gcc_cv_as_ld_jalr_reloc=yes
4068 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4069 echo ' .ent x' > conftest.s
4070 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
4071 echo ' ld $25,%call16(y)($28)' >> conftest.s
4072 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4073 echo '1: jalr $25' >> conftest.s
4074 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4075 echo '1: jalr $25' >> conftest.s
4076 echo ' .end x' >> conftest.s
4077 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4078 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4079 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4080 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4081 gcc_cv_as_ld_jalr_reloc=yes
4087 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4088 if test x$target_cpu_default = x; then
4089 target_cpu_default=MASK_RELAX_PIC_CALLS
4091 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4094 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4096 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4097 [gcc_cv_ld_mips_personality_relaxation],
4098 [gcc_cv_ld_mips_personality_relaxation=no
4099 if test $in_tree_ld = yes ; then
4100 if test "$gcc_cv_gld_major_version" -eq 2 \
4101 -a "$gcc_cv_gld_minor_version" -ge 21 \
4102 -o "$gcc_cv_gld_major_version" -gt 2; then
4103 gcc_cv_ld_mips_personality_relaxation=yes
4105 elif test x$gcc_cv_as != x \
4106 -a x$gcc_cv_ld != x \
4107 -a x$gcc_cv_readelf != x ; then
4108 cat > conftest.s <<EOF
4110 .cfi_personality 0x80,indirect_ptr
4117 .section .data,"aw",@progbits
4121 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4122 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4123 if $gcc_cv_readelf -d conftest 2>&1 \
4124 | grep TEXTREL > /dev/null 2>&1; then
4126 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4127 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4130 gcc_cv_ld_mips_personality_relaxation=yes
4134 rm -f conftest.s conftest.o conftest])
4135 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4136 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4137 [Define if your linker can relax absolute .eh_frame personality
4138 pointers into PC-relative form.])
4143 # Mips and HP-UX need the GNU assembler.
4144 # Linux on IA64 might be able to use the Intel assembler.
4147 mips*-*-* | *-*-hpux* )
4148 if test x$gas_flag = xyes \
4149 || test x"$host" != x"$build" \
4150 || test ! -x "$gcc_cv_as" \
4151 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4154 echo "*** This configuration requires the GNU assembler" >&2
4160 # ??? Not all targets support dwarf2 debug_line, even within a version
4161 # of gas. Moreover, we need to emit a valid instruction to trigger any
4162 # info to the output file. So, as supported targets are added to gas 2.11,
4163 # add some instruction here to (also) show we expect this might work.
4164 # ??? Once 2.11 is released, probably need to add first known working
4165 # version to the per-target configury.
4167 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4168 | pa | rs6000 | score | sparc | spu | tilegx | tilepro | xstormy16 | xtensa)
4178 if test x"$insn" != x; then
4180 .file 1 \"conftest.s\"
4183 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4184 gcc_cv_as_dwarf2_debug_line,
4185 [elf,2,11,0],, [$conftest_s],
4186 [if test x$gcc_cv_objdump != x \
4187 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4188 | grep debug_line > /dev/null 2>&1; then
4189 gcc_cv_as_dwarf2_debug_line=yes
4192 # The .debug_line file table must be in the exact order that
4193 # we specified the files, since these indices are also used
4194 # by DW_AT_decl_file. Approximate this test by testing if
4195 # the assembler bitches if the same index is assigned twice.
4196 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4197 gcc_cv_as_dwarf2_file_buggy,,,
4201 if test $gcc_cv_as_dwarf2_debug_line = yes \
4202 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4203 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4204 [Define if your assembler supports dwarf2 .file/.loc directives,
4205 and preserves file table indices exactly as given.])
4208 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4209 gcc_cv_as_gdwarf2_flag,
4210 [elf,2,11,0], [--gdwarf2], [$insn],,
4211 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4212 [Define if your assembler supports the --gdwarf2 option.])])
4214 gcc_GAS_CHECK_FEATURE([--gstabs option],
4215 gcc_cv_as_gstabs_flag,
4216 [elf,2,11,0], [--gstabs], [$insn],
4217 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4218 # and warns about it, but still exits successfully. So check for
4220 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4222 else gcc_cv_as_gstabs_flag=yes
4224 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4225 [Define if your assembler supports the --gstabs option.])])
4227 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4228 gcc_cv_as_debug_prefix_map_flag,
4229 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4230 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4231 [Define if your assembler supports the --debug-prefix-map option.])])
4234 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4237 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4238 [Define if your assembler supports .lcomm with an alignment field.])])
4240 AC_ARG_ENABLE(gnu-unique-object,
4241 [AS_HELP_STRING([--enable-gnu-unique-object],
4242 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4243 [case $enable_gnu_unique_object in
4245 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4246 Valid choices are 'yes' and 'no'.]) ;;
4248 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4250 [.type foo, '$target_type_format_char'gnu_unique_object],,
4251 # We need to unquote above to to use the definition from config.gcc.
4252 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4253 [[if test x$host = x$build -a x$host = x$target &&
4254 ldd --version 2>/dev/null &&
4255 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4256 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4257 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4258 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4259 if test "$glibcnum" -ge 2011 ; then
4260 enable_gnu_unique_object=yes
4263 if test x$enable_gnu_unique_object = xyes; then
4264 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4265 [Define if your assembler supports @gnu_unique_object.])
4268 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4269 [gcc_cv_as_line_zero],
4270 [gcc_cv_as_line_zero=no
4271 if test $in_tree_gas = yes; then
4272 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4273 elif test "x$gcc_cv_as" != x; then
4274 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4275 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4276 test "x`cat conftest.out`" = x
4278 gcc_cv_as_line_zero=yes
4280 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4281 cat conftest.s >&AS_MESSAGE_LOG_FD
4282 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4283 cat conftest.out >&AS_MESSAGE_LOG_FD
4285 rm -f conftest.o conftest.s conftest.out
4287 if test "x$gcc_cv_as_line_zero" = xyes; then
4288 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4289 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4292 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4293 gcc_cv_ld_eh_frame_hdr=no
4294 if test $in_tree_ld = yes ; then
4295 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4296 && test $in_tree_ld_is_elf = yes; then
4297 gcc_cv_ld_eh_frame_hdr=yes
4299 elif test x$gcc_cv_ld != x; then
4300 if echo "$ld_ver" | grep GNU > /dev/null; then
4301 # Check if linker supports --eh-frame-hdr option
4302 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4303 gcc_cv_ld_eh_frame_hdr=yes
4308 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4309 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4310 gcc_cv_ld_eh_frame_hdr=yes
4316 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4317 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4318 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4319 [Define if your linker supports .eh_frame_hdr.])
4321 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4323 AC_MSG_CHECKING(linker position independent executable support)
4325 if test $in_tree_ld = yes ; then
4326 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4327 && test $in_tree_ld_is_elf = yes; then
4330 elif test x$gcc_cv_ld != x; then
4331 # Check if linker supports -pie option
4332 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4336 if test x"$gcc_cv_ld_pie" = xyes; then
4337 AC_DEFINE(HAVE_LD_PIE, 1,
4338 [Define if your linker supports -pie option.])
4340 AC_MSG_RESULT($gcc_cv_ld_pie)
4342 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4343 gcc_cv_ld_eh_gc_sections=no
4344 if test $in_tree_ld = yes ; then
4345 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4346 && test $in_tree_ld_is_elf = yes; then
4347 gcc_cv_ld_eh_gc_sections=yes
4349 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4350 cat > conftest.s <<EOF
4353 .type _start, @function
4356 .size _start, .-_start
4357 .section .text.foo,"ax",@progbits
4358 .type foo, @function
4362 .section .gcc_except_table.foo,"a",@progbits
4365 .section .eh_frame,"a",@progbits
4368 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4369 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4370 | grep "gc-sections option ignored" > /dev/null; then
4371 gcc_cv_ld_eh_gc_sections=no
4372 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4373 | grep gcc_except_table > /dev/null; then
4374 gcc_cv_ld_eh_gc_sections=yes
4375 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4376 if test x$gcc_cv_as_comdat_group != xyes; then
4377 gcc_cv_ld_eh_gc_sections=no
4378 cat > conftest.s <<EOF
4381 .type _start, @function
4384 .size _start, .-_start
4385 .section .gnu.linkonce.t.foo,"ax",@progbits
4386 .type foo, @function
4390 .section .gcc_except_table.foo,"a",@progbits
4393 .section .eh_frame,"a",@progbits
4396 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4397 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4398 | grep "gc-sections option ignored" > /dev/null; then
4399 gcc_cv_ld_eh_gc_sections=no
4400 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4401 | grep gcc_except_table > /dev/null; then
4402 gcc_cv_ld_eh_gc_sections=yes
4408 rm -f conftest.s conftest.o conftest
4412 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4413 gcc_cv_ld_eh_gc_sections=no
4416 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4417 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4418 [Define if your linker supports garbage collection of
4419 sections in presence of EH frames.])
4421 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4423 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4424 gcc_cv_ld_eh_gc_sections_bug=no
4425 if test $in_tree_ld = yes ; then
4426 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4427 && test $in_tree_ld_is_elf = yes; then
4428 gcc_cv_ld_eh_gc_sections_bug=yes
4430 elif test x$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
4431 gcc_cv_ld_eh_gc_sections_bug=yes
4432 cat > conftest.s <<EOF
4435 .type _start, @function
4438 .size _start, .-_start
4439 .section .text.startup.foo,"ax",@progbits
4440 .type foo, @function
4444 .section .gcc_except_table.foo,"a",@progbits
4447 .section .eh_frame,"a",@progbits
4450 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4451 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4452 | grep "gc-sections option ignored" > /dev/null; then
4454 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4455 | grep gcc_except_table > /dev/null; then
4456 gcc_cv_ld_eh_gc_sections_bug=no
4459 rm -f conftest.s conftest.o conftest
4461 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4462 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4463 [Define if your linker has buggy garbage collection of
4464 sections support when .text.startup.foo like sections are used.])
4466 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4472 AC_CACHE_CHECK(linker --as-needed support,
4473 gcc_cv_ld_as_needed,
4474 [gcc_cv_ld_as_needed=no
4475 if test $in_tree_ld = yes ; then
4476 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4477 && test $in_tree_ld_is_elf = yes; then
4478 gcc_cv_ld_as_needed=yes
4480 elif test x$gcc_cv_ld != x; then
4481 # Check if linker supports --as-needed and --no-as-needed options
4482 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4483 gcc_cv_ld_as_needed=yes
4487 if test x"$gcc_cv_ld_as_needed" = xyes; then
4488 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4489 [Define if your linker supports --as-needed and --no-as-needed options.])
4492 case "$target:$tm_file" in
4493 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4496 emul_name="-melf64ppc"
4499 emul_name="-melf64ppc_fbsd"
4502 AC_CACHE_CHECK(linker support for omitting dot symbols,
4503 gcc_cv_ld_no_dot_syms,
4504 [gcc_cv_ld_no_dot_syms=no
4505 if test x"$ld_is_gold" = xyes; then
4506 gcc_cv_ld_no_dot_syms=yes
4507 elif test $in_tree_ld = yes ; then
4508 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4509 gcc_cv_ld_no_dot_syms=yes
4511 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4512 cat > conftest1.s <<EOF
4516 cat > conftest2.s <<EOF
4517 .section ".opd","aw"
4522 .quad .LEfoo,.TOC.@tocbase,0
4528 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4529 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4530 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4531 gcc_cv_ld_no_dot_syms=yes
4533 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4536 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4537 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4538 [Define if your PowerPC64 linker only needs function descriptor syms.])
4541 AC_CACHE_CHECK(linker large toc support,
4542 gcc_cv_ld_large_toc,
4543 [gcc_cv_ld_large_toc=no
4544 if test x"$ld_is_gold" = xyes; then
4545 gcc_cv_ld_large_toc=yes
4546 elif test $in_tree_ld = yes ; then
4547 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4548 gcc_cv_ld_large_toc=yes
4550 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4551 cat > conftest.s <<EOF
4552 .section ".tbss","awT",@nobits
4558 addis 9,13,ie0@got@tprel@ha
4559 ld 9,ie0@got@tprel@l(9)
4561 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4562 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4563 gcc_cv_ld_large_toc=yes
4565 rm -f conftest conftest.o conftest.s
4568 if test x"$gcc_cv_ld_large_toc" = xyes; then
4569 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4570 [Define if your PowerPC64 linker supports a large TOC.])
4577 AC_CACHE_CHECK(linker large toc support,
4578 gcc_cv_ld_large_toc,
4579 [gcc_cv_ld_large_toc=no
4580 if test x$gcc_cv_as != x ; then
4581 cat > conftest.s <<EOF
4591 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
4592 gcc_cv_ld_large_toc=yes
4594 rm -f conftest conftest.o conftest.s
4597 if test x"$gcc_cv_ld_large_toc" = xyes; then
4598 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4599 [Define if your AIX linker supports a large TOC.])
4604 AC_CACHE_CHECK(linker --build-id support,
4606 [gcc_cv_ld_buildid=no
4607 if test $in_tree_ld = yes ; then
4608 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4609 "$gcc_cv_gld_minor_version" -ge 18 -o \
4610 "$gcc_cv_gld_major_version" -gt 2 \
4611 && test $in_tree_ld_is_elf = yes; then
4612 gcc_cv_ld_buildid=yes
4614 elif test x$gcc_cv_ld != x; then
4615 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4616 gcc_cv_ld_buildid=yes
4619 if test x"$gcc_cv_ld_buildid" = xyes; then
4620 AC_DEFINE(HAVE_LD_BUILDID, 1,
4621 [Define if your linker supports --build-id.])
4624 AC_ARG_ENABLE(linker-build-id,
4625 [AS_HELP_STRING([--enable-linker-build-id],
4626 [compiler will always pass --build-id to linker])],
4628 enable_linker_build_id=no)
4630 if test x"$enable_linker_build_id" = xyes; then
4631 if test x"$gcc_cv_ld_buildid" = xyes; then
4632 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4633 [Define if gcc should always pass --build-id to linker.])
4635 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4639 # In binutils 2.21, GNU ld gained support for new emulations fully
4640 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4641 AC_CACHE_CHECK(linker *_sol2 emulation support,
4642 gcc_cv_ld_sol2_emulation,
4643 [gcc_cv_ld_sol2_emulation=no
4644 if test $in_tree_ld = yes ; then
4645 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4646 "$gcc_cv_gld_minor_version" -ge 21 -o \
4647 "$gcc_cv_gld_major_version" -gt 2 \
4648 && test $in_tree_ld_is_elf = yes; then
4649 gcc_cv_ld_sol2_emulation=yes
4651 elif test x$gcc_cv_ld != x; then
4652 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4653 grep _sol2 > /dev/null; then
4654 gcc_cv_ld_sol2_emulation=yes
4657 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4658 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4659 [Define if your linker supports the *_sol2 emulations.])
4662 AC_CACHE_CHECK(linker --sysroot support,
4664 [gcc_cv_ld_sysroot=no
4665 if test $in_tree_ld = yes ; then
4666 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4667 gcc_cv_ld_sysroot=yes
4669 elif test x$gcc_cv_ld != x; then
4670 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4671 gcc_cv_ld_sysroot=yes
4674 if test x"$gcc_cv_ld_sysroot" = xyes; then
4675 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4676 [Define if your linker supports --sysroot.])
4679 if test x$with_sysroot = x && test x$host = x$target \
4680 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4681 && test "$prefix" != "NONE"; then
4682 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4683 [Define to PREFIX/include if cpp should also search that directory.])
4686 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4687 if test "x$with_headers" != x; then
4688 target_header_dir=$with_headers
4689 elif test "x$with_sysroot" = x; then
4690 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
4691 elif test "x$with_build_sysroot" != "x"; then
4692 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4693 elif test "x$with_sysroot" = xyes; then
4694 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4696 target_header_dir="${with_sysroot}${native_system_header_dir}"
4699 target_header_dir=${native_system_header_dir}
4702 # Test for stack protector support in target C library.
4703 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4704 gcc_cv_libc_provides_ssp,
4705 [gcc_cv_libc_provides_ssp=no
4707 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4708 [# glibc 2.4 and later provides __stack_chk_fail and
4709 # either __stack_chk_guard, or TLS access to stack guard canary.
4710 if test -f $target_header_dir/features.h \
4711 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4712 $target_header_dir/features.h > /dev/null; then
4713 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4714 $target_header_dir/features.h > /dev/null; then
4715 gcc_cv_libc_provides_ssp=yes
4716 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4717 $target_header_dir/features.h > /dev/null \
4718 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4719 $target_header_dir/features.h > /dev/null; then
4720 gcc_cv_libc_provides_ssp=yes
4721 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4722 $target_header_dir/features.h > /dev/null && \
4723 test -f $target_header_dir/bits/uClibc_config.h && \
4724 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4725 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4726 gcc_cv_libc_provides_ssp=yes
4728 # all versions of Bionic support stack protector
4729 elif test -f $target_header_dir/sys/cdefs.h \
4730 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
4731 $target_header_dir/sys/cdefs.h > /dev/null; then
4732 gcc_cv_libc_provides_ssp=yes
4736 # Avoid complicated tests (see
4737 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4738 # simply assert that glibc does provide this, which is true for all
4739 # realistically usable GNU/Hurd configurations.
4740 gcc_cv_libc_provides_ssp=yes;;
4741 *-*-darwin* | *-*-freebsd*)
4742 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4743 [echo "no __stack_chk_fail on this target"])
4745 *) gcc_cv_libc_provides_ssp=no ;;
4748 if test x$gcc_cv_libc_provides_ssp = xyes; then
4749 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4750 [Define if your target C library provides stack protector support])
4753 # Test for <sys/sdt.h> on the target.
4754 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4755 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4757 if test -f $target_header_dir/sys/sdt.h; then
4759 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4760 [Define if your target C library provides sys/sdt.h])
4762 AC_MSG_RESULT($have_sys_sdt_h)
4764 # Check if TFmode long double should be used by default or not.
4765 # Some glibc targets used DFmode long double, but with glibc 2.4
4766 # and later they can use TFmode.
4768 powerpc*-*-linux* | \
4772 AC_ARG_WITH(long-double-128,
4773 [AS_HELP_STRING([--with-long-double-128],
4774 [use 128-bit long double by default])],
4775 gcc_cv_target_ldbl128="$with_long_double_128",
4776 [[gcc_cv_target_ldbl128=no
4777 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4778 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4779 && gcc_cv_target_ldbl128=yes
4783 if test x$gcc_cv_target_ldbl128 = xyes; then
4784 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4785 [Define if TFmode long double should be the default])
4788 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4789 gcc_cv_target_dl_iterate_phdr=unknown
4791 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
4792 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
4793 # libdl there, both complicating its use and breaking compatibility
4794 # between Solaris 10 updates.
4795 *-*-solaris2.1[[1-9]]*)
4796 # <link.h> needs both a dl_iterate_phdr declaration and support for
4797 # compilation with largefile support.
4798 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4799 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4800 gcc_cv_target_dl_iterate_phdr=yes
4802 gcc_cv_target_dl_iterate_phdr=no
4806 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4807 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4808 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4809 [Define if your target C library provides the `dl_iterate_phdr' function.])
4811 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4813 # We no longer support different GC mechanisms. Emit an error if
4814 # the user configures with --with-gc.
4816 [AS_HELP_STRING([--with-gc={page,zone}],
4817 [this option is not supported anymore. It used to choose
4818 the garbage collection mechanism to use with the compiler])],
4819 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
4822 # Libraries to use on the host. This will normally be set by the top
4823 # level Makefile. Here we simply capture the value for our Makefile.
4824 if test -z "${HOST_LIBS+set}"; then
4829 # Use the system's zlib library.
4831 zlibinc="-I\$(srcdir)/../zlib"
4832 AC_ARG_WITH(system-zlib,
4833 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4840 dnl Very limited version of automake's enable-maintainer-mode
4842 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4843 dnl maintainer-mode is disabled by default
4844 AC_ARG_ENABLE(maintainer-mode,
4845 [AS_HELP_STRING([--enable-maintainer-mode],
4846 [enable make rules and dependencies not useful
4847 (and sometimes confusing) to the casual installer])],
4848 maintainer_mode=$enableval,
4851 AC_MSG_RESULT($maintainer_mode)
4853 if test "$maintainer_mode" = "yes"; then
4864 # Make empty files to contain the specs and options for each language.
4865 # Then add #include lines to for a compiler that has specs and/or options.
4871 # These (without "all_") are set in each config-lang.in.
4872 # `language' must be a single word so is spelled singularly.
4875 all_outputs='Makefile'
4876 # List of language makefile fragments.
4878 # Additional files for gengtype
4879 all_gtfiles="$target_gtfiles"
4881 # These are the languages that are set in --enable-languages,
4882 # and are available in the GCC tree.
4883 all_selected_languages=
4885 # Add the language fragments.
4886 # Languages are added via two mechanisms. Some information must be
4887 # recorded in makefile variables, these are defined in config-lang.in.
4888 # We accumulate them and plug them into the main Makefile.
4889 # The other mechanism is a set of hooks for each of the main targets
4890 # like `clean', `install', etc.
4892 language_hooks="Make-hooks"
4894 for lang in ${srcdir}/*/config-lang.in
4897 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4899 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4900 if test "x$lang_alias" = x
4902 echo "$lang doesn't set \$language." 1>&2
4905 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4906 subdirs="$subdirs $subdir"
4908 # $gcc_subdir is where the gcc integration files are to be found
4909 # for a language, both for internal compiler purposes (compiler
4910 # sources implementing front-end to GCC tree converters), and for
4911 # build infrastructure purposes (Make-lang.in, etc.)
4913 # This will be <subdir> (relative to $srcdir) if a line like
4914 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4915 # is found in <langdir>/config-lang.in, and will remain <langdir>
4918 # Except for the language alias (fetched above), the regular
4919 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4920 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4921 # only this and the language alias.
4923 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4924 if [ "$gcc_subdir" = "" ]; then
4925 gcc_subdir="$subdir"
4928 case ",$enable_languages," in
4930 all_selected_languages="$all_selected_languages $lang_alias"
4931 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4932 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4944 . ${srcdir}/$gcc_subdir/config-lang.in
4945 if test "x$language" = x
4947 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4952 case ",$enable_languages," in
4955 for i in $subdir_requires; do
4956 test -f "${srcdir}/$i/config-lang.in" && continue
4964 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4965 if test -f $srcdir/$gcc_subdir/lang.opt; then
4966 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4967 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4969 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4970 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4972 all_languages="$all_languages $language"
4973 all_compilers="$all_compilers $compilers"
4974 all_outputs="$all_outputs $outputs"
4975 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4976 case ",$enable_languages," in
4978 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4980 AC_SUBST(enable_lto)
4987 for language in $all_selected_languages
4989 check_languages="$check_languages check-$language"
4992 # We link each language in with a set of hooks, reached indirectly via
4993 # lang.${target}. Only do so for selected languages.
4997 target_list="all.cross start.encap rest.encap tags \
4998 install-common install-man install-info install-pdf install-html dvi \
4999 pdf html uninstall info man srcextra srcman srcinfo \
5000 mostlyclean clean distclean maintainer-clean install-plugin"
5002 for t in $target_list
5005 for lang in $all_selected_languages
5009 echo "lang.$t: $x" >> Make-hooks
5013 # Option include files
5016 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5017 option_includes="option-includes.mk"
5018 AC_SUBST_FILE(option_includes)
5026 echo "dir ." > .gdbinit
5027 echo "dir ${srcdir}" >> .gdbinit
5028 if test x$gdb_needs_out_file_path = xyes
5030 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5032 if test "x$subdirs" != x; then
5035 echo "dir ${srcdir}/$s" >> .gdbinit
5038 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5040 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5041 AC_SUBST(gcc_tooldir)
5044 # Find a directory in which to install a shared libgcc.
5046 AC_ARG_ENABLE(version-specific-runtime-libs,
5047 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5048 [specify that runtime libraries should be
5049 installed in a compiler-specific directory])])
5051 # Substitute configuration variables
5054 AC_SUBST(all_compilers)
5055 AC_SUBST(all_gtfiles)
5056 AC_SUBST(all_lang_makefrags)
5057 AC_SUBST(all_languages)
5058 AC_SUBST(all_selected_languages)
5059 AC_SUBST(build_exeext)
5060 AC_SUBST(build_install_headers_dir)
5061 AC_SUBST(build_xm_file_list)
5062 AC_SUBST(build_xm_include_list)
5063 AC_SUBST(build_xm_defines)
5064 AC_SUBST(build_file_translate)
5065 AC_SUBST(check_languages)
5066 AC_SUBST(cpp_install_dir)
5067 AC_SUBST(xmake_file)
5068 AC_SUBST(tmake_file)
5069 AC_SUBST(TM_ENDIAN_CONFIG)
5070 AC_SUBST(TM_MULTILIB_CONFIG)
5071 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5072 AC_SUBST(extra_gcc_objs)
5073 AC_SUBST(user_headers_inc_next_pre)
5074 AC_SUBST(user_headers_inc_next_post)
5075 AC_SUBST(extra_headers_list)
5076 AC_SUBST(extra_objs)
5077 AC_SUBST(extra_programs)
5078 AC_SUBST(float_h_file)
5079 AC_SUBST(gcc_config_arguments)
5080 AC_SUBST(gcc_gxx_include_dir)
5081 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5082 AC_SUBST(host_exeext)
5083 AC_SUBST(host_xm_file_list)
5084 AC_SUBST(host_xm_include_list)
5085 AC_SUBST(host_xm_defines)
5086 AC_SUBST(out_host_hook_obj)
5088 AC_SUBST(lang_opt_files)
5089 AC_SUBST(lang_specs_files)
5090 AC_SUBST(lang_tree_files)
5091 AC_SUBST(local_prefix)
5093 AC_SUBST(objc_boehm_gc)
5095 AC_SUBST(out_object_file)
5096 AC_SUBST(common_out_file)
5097 AC_SUBST(common_out_object_file)
5098 AC_SUBST(tm_file_list)
5099 AC_SUBST(tm_include_list)
5100 AC_SUBST(tm_defines)
5101 AC_SUBST(tm_p_file_list)
5102 AC_SUBST(tm_p_include_list)
5103 AC_SUBST(xm_file_list)
5104 AC_SUBST(xm_include_list)
5105 AC_SUBST(xm_defines)
5106 AC_SUBST(use_gcc_stdint)
5107 AC_SUBST(c_target_objs)
5108 AC_SUBST(cxx_target_objs)
5109 AC_SUBST(fortran_target_objs)
5110 AC_SUBST(target_cpu_default)
5112 AC_SUBST_FILE(language_hooks)
5115 if test x${build} = x${host} ; then
5116 if test x${host} = x${target} ; then
5117 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5119 echo "Links are now set up to build a cross-compiler" 1>&2
5120 echo " from ${host} to ${target}." 1>&2
5123 if test x${host} = x${target} ; then
5124 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5125 echo " for ${target}." 1>&2
5127 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5128 echo " from ${host} to ${target}." 1>&2
5132 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5133 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5135 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5136 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5138 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5139 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5140 if test "x${CLOOGLIBS}" != "x" ; then
5141 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5144 # Check for plugin support
5145 AC_ARG_ENABLE(plugin,
5146 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5147 enable_plugin=$enableval,
5148 enable_plugin=yes; default_plugin=yes)
5154 if test x$build = x$host; then
5155 export_sym_check="nm${exeext} -g"
5156 elif test x$host = x$target; then
5157 export_sym_check="$gcc_cv_nm -g"
5163 if test x$build = x$host; then
5164 export_sym_check="objdump${exeext} -T"
5165 elif test x$host = x$target; then
5166 export_sym_check="$gcc_cv_objdump -T"
5173 if test x"$enable_plugin" = x"yes"; then
5175 AC_MSG_CHECKING([for exported symbols])
5176 if test "x$export_sym_check" != x; then
5177 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5178 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
5179 if $export_sym_check conftest | grep foobar > /dev/null; then
5180 : # No need to use a flag
5181 AC_MSG_RESULT([yes])
5183 AC_MSG_RESULT([yes])
5184 AC_MSG_CHECKING([for -rdynamic])
5185 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
5186 if $export_sym_check conftest | grep foobar > /dev/null; then
5188 pluginlibs="-rdynamic"
5193 AC_MSG_RESULT([$plugin_rdynamic])
5196 AC_MSG_RESULT([unable to check])
5201 AC_SEARCH_LIBS([dlopen], [dl])
5202 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5203 pluginlibs="$pluginlibs -ldl"
5207 # Check that we can build shared objects with -fPIC -shared
5208 saved_LDFLAGS="$LDFLAGS"
5209 saved_CFLAGS="$CFLAGS"
5212 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5213 CFLAGS="$CFLAGS -fPIC"
5214 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5217 CFLAGS="$CFLAGS -fPIC"
5218 LDFLAGS="$LDFLAGS -fPIC -shared"
5221 AC_MSG_CHECKING([for -fPIC -shared])
5223 [extern int X;],[return X == 0;],
5224 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5225 [AC_MSG_RESULT([no]); have_pic_shared=no])
5226 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5230 LDFLAGS="$saved_LDFLAGS"
5231 CFLAGS="$saved_CFLAGS"
5233 # If plugin support had been requested but not available, fail.
5234 if test x"$enable_plugin" = x"no" ; then
5235 if test x"$default_plugin" != x"yes"; then
5237 Building GCC with plugin support requires a host that supports
5238 -fPIC, -shared, -ldl and -rdynamic.])
5243 AC_SUBST(pluginlibs)
5244 AC_SUBST(enable_plugin)
5245 if test x"$enable_plugin" = x"yes"; then
5246 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5250 AC_ARG_ENABLE(libquadmath-support,
5251 [AS_HELP_STRING([--disable-libquadmath-support],
5252 [disable libquadmath support for Fortran])],
5253 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5254 ENABLE_LIBQUADMATH_SUPPORT=yes)
5255 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5256 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5257 [Define to 1 to enable libquadmath support])
5261 # Specify what hash style to use by default.
5262 AC_ARG_WITH([linker-hash-style],
5263 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5264 [specify the linker hash style])],
5265 [case x"$withval" in
5267 LINKER_HASH_STYLE=sysv
5270 LINKER_HASH_STYLE=gnu
5273 LINKER_HASH_STYLE=both
5276 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5279 [LINKER_HASH_STYLE=''])
5280 if test x"${LINKER_HASH_STYLE}" != x; then
5281 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5282 [The linker hash style])
5285 # Configure the subdirectories
5286 # AC_CONFIG_SUBDIRS($subdirs)
5288 # Create the Makefile
5289 # and configure language subdirectories
5290 AC_CONFIG_FILES($all_outputs)
5292 AC_CONFIG_COMMANDS([default],
5294 case ${CONFIG_HEADERS} in
5295 *auto-host.h:config.in*)
5298 # Make sure all the subdirs exist.
5299 for d in $subdirs doc build common c-family
5301 test -d $d || mkdir $d
5304 [subdirs='$subdirs'])