2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
5 # 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
7 #This file is part of GCC.
9 #GCC is free software; you can redistribute it and/or modify it under
10 #the terms of the GNU General Public License as published by the Free
11 #Software Foundation; either version 3, or (at your option) any later
14 #GCC is distributed in the hope that it will be useful, but WITHOUT
15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 #You should have received a copy of the GNU General Public License
20 #along with GCC; see the file COPYING3. If not see
21 #<http://www.gnu.org/licenses/>.
23 # --------------------------------
24 # Initialization and sanity checks
25 # --------------------------------
29 AC_CONFIG_SRCDIR(tree.c)
30 AC_CONFIG_HEADER(auto-host.h:config.in)
32 gcc_version=`cat $srcdir/BASE-VER`
34 # Determine the host, build, and target systems
39 # Determine the noncanonical target name, for directory use.
40 ACX_NONCANONICAL_TARGET
42 # Determine the target- and build-specific subdirectories
45 # Set program_transform_name
48 # Check for bogus environment variables.
49 # Test if LIBRARY_PATH contains the notation for the current directory
50 # since this would lead to problems installing/building glibc.
51 # LIBRARY_PATH contains the current directory if one of the following
53 # - one of the terminals (":" and ";") is the first or last sign
54 # - two terminals occur directly after each other
55 # - the path contains an element with a dot in it
56 AC_MSG_CHECKING(LIBRARY_PATH variable)
58 case ${LIBRARY_PATH} in
59 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
60 library_path_setting="contains current directory"
63 library_path_setting="ok"
67 AC_MSG_RESULT($library_path_setting)
68 if test "$library_path_setting" != "ok"; then
70 *** LIBRARY_PATH shouldn't contain the current directory when
71 *** building gcc. Please change the environment variable
72 *** and run configure again.])
75 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
76 # since this would lead to problems installing/building glibc.
77 # GCC_EXEC_PREFIX contains the current directory if one of the following
79 # - one of the terminals (":" and ";") is the first or last sign
80 # - two terminals occur directly after each other
81 # - the path contains an element with a dot in it
82 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
84 case ${GCC_EXEC_PREFIX} in
85 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
86 gcc_exec_prefix_setting="contains current directory"
89 gcc_exec_prefix_setting="ok"
93 AC_MSG_RESULT($gcc_exec_prefix_setting)
94 if test "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [AS_HELP_STRING([--with-local-prefix=DIR],
109 [specifies directory to put local include])],
110 [case "${withval}" in
111 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
113 *) local_prefix=$with_local_prefix ;;
116 # Default local prefix if it is empty
117 if test x$local_prefix = x; then
118 local_prefix=/usr/local
121 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
122 # passed in by the toplevel make and thus we'd get different behavior
123 # depending on where we built the sources.
125 # Specify the g++ header file directory
126 AC_ARG_WITH(gxx-include-dir,
127 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
128 [specifies directory to put g++ header files])],
129 [case "${withval}" in
130 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
132 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
135 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
136 if test x${gcc_gxx_include_dir} = x; then
137 if test x${enable_version_specific_runtime_libs} = xyes; then
138 gcc_gxx_include_dir='${libsubdir}/include/c++'
140 libstdcxx_incdir='include/c++/$(version)'
141 if test x$host != x$target; then
142 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
144 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
148 gcc_gxx_include_dir_add_sysroot=0
149 if test "${with_sysroot+set}" = set; then
150 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
151 if test "${gcc_gxx_without_sysroot}"; then
152 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
153 gcc_gxx_include_dir_add_sysroot=1
157 AC_ARG_WITH(cpp_install_dir,
158 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
159 [install the user visible C preprocessor in DIR
160 (relative to PREFIX) as well as PREFIX/bin])],
161 [if test x$withval = xyes; then
162 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
163 elif test x$withval != xno; then
164 cpp_install_dir=$withval
167 # We would like to our source tree to be readonly. However when releases or
168 # pre-releases are generated, the flex/bison generated files as well as the
169 # various formats of manuals need to be included along with the rest of the
170 # sources. Therefore we have --enable-generated-files-in-srcdir to do
173 AC_MSG_CHECKING([whether to place generated files in the source directory])
174 dnl generated-files-in-srcdir is disabled by default
175 AC_ARG_ENABLE(generated-files-in-srcdir,
176 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
177 [put copies of generated files in source dir
178 intended for creating source tarballs for users
179 without texinfo bison or flex])],
180 generated_files_in_srcdir=$enableval,
181 generated_files_in_srcdir=no)
183 AC_MSG_RESULT($generated_files_in_srcdir)
185 if test "$generated_files_in_srcdir" = "yes"; then
192 # -------------------
193 # Find default linker
194 # -------------------
198 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
199 gnu_ld_flag="$with_gnu_ld",
202 # With pre-defined ld
204 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
205 DEFAULT_LINKER="$with_ld")
206 if test x"${DEFAULT_LINKER+set}" = x"set"; then
207 if test ! -x "$DEFAULT_LINKER"; then
208 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
209 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
212 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
213 [Define to enable the use of a default linker.])
216 AC_MSG_CHECKING([whether a default linker was specified])
217 if test x"${DEFAULT_LINKER+set}" = x"set"; then
218 if test x"$gnu_ld_flag" = x"no"; then
219 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
221 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
227 # With demangler in GNU ld
228 AC_ARG_WITH(demangler-in-ld,
229 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
230 demangler_in_ld="$with_demangler_in_ld",
233 # ----------------------
234 # Find default assembler
235 # ----------------------
239 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
240 gas_flag="$with_gnu_as",
244 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
245 DEFAULT_ASSEMBLER="$with_as")
246 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
247 if test ! -x "$DEFAULT_ASSEMBLER"; then
248 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
249 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
252 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
253 [Define to enable the use of a default assembler.])
256 AC_MSG_CHECKING([whether a default assembler was specified])
257 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
258 if test x"$gas_flag" = x"no"; then
259 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
261 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
271 # If a non-executable a.out is present (e.g. created by GNU as above even if
272 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
273 # file, even when creating an executable, so an execution test fails.
274 # Remove possible default executable files to avoid this.
276 # FIXME: This really belongs into AC_PROG_CC and can be removed once
277 # Autoconf includes it.
278 rm -f a.out a.exe b.out
280 # Find the native compiler
284 ACX_PROG_GNAT([-I"$srcdir"/ada])
286 # autoconf is lame and doesn't give us any substitution variable for this.
287 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
288 NO_MINUS_C_MINUS_O=yes
290 OUTPUT_OPTION='-o $@'
292 AC_SUBST(NO_MINUS_C_MINUS_O)
293 AC_SUBST(OUTPUT_OPTION)
295 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
296 # optimizations to be activated explicitly by the toplevel.
299 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
300 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
305 # Determine PICFLAG for target gnatlib.
306 GCC_PICFLAG_FOR_TARGET
307 AC_SUBST(PICFLAG_FOR_TARGET)
309 # -------------------------
310 # Check C compiler features
311 # -------------------------
313 AC_USE_SYSTEM_EXTENSIONS
319 # sizeof(char) is 1 by definition.
320 AC_CHECK_SIZEOF(void *)
321 AC_CHECK_SIZEOF(short)
323 AC_CHECK_SIZEOF(long)
324 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
325 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
328 # ---------------------
329 # Warnings and checking
330 # ---------------------
332 # Check $CC warning features (if it's GCC).
333 # We want to use -pedantic, but we don't want warnings about
337 # * C++11 narrowing conversions in { }
338 # So, we only use -pedantic if we can disable those warnings.
340 ACX_PROG_CC_WARNING_OPTS(
341 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual])), [loose_warn])
342 ACX_PROG_CC_WARNING_OPTS(
343 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
345 ACX_PROG_CC_WARNING_OPTS(
346 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
347 ACX_PROG_CC_WARNING_OPTS(
348 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
349 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
350 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
351 [-Wno-overlength-strings])), [strict_warn])
352 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
354 # The above macros do nothing if the compiler is not GCC. However, the
355 # Makefile has more goo to add other flags, so these variables are used
356 # to enable warnings only for GCC.
359 if test "x$GCC" = "xyes"; then
360 warn_cflags='$(GCC_WARN_CFLAGS)'
361 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
363 AC_SUBST(warn_cflags)
364 AC_SUBST(warn_cxxflags)
366 # Disable exceptions and RTTI if building with g++
367 ACX_PROG_CC_WARNING_OPTS(
368 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
371 # Enable expensive internal checks
373 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
377 AC_ARG_ENABLE(checking,
378 [AS_HELP_STRING([[--enable-checking[=LIST]]],
379 [enable expensive run-time checks. With LIST,
380 enable only specific categories of checks.
381 Categories are: yes,no,all,none,release.
382 Flags are: assert,df,fold,gc,gcac,gimple,misc,
383 rtlflag,rtl,runtime,tree,valgrind,types])],
384 [ac_checking_flags="${enableval}"],[
385 # Determine the default checks.
386 if test x$is_release = x ; then
387 ac_checking_flags=yes
389 ac_checking_flags=release
391 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
392 for check in release $ac_checking_flags
395 # these set all the flags to specific states
396 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
397 ac_fold_checking= ; ac_gc_checking=1 ;
398 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
399 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
400 ac_tree_checking=1 ; ac_valgrind_checking= ;
401 ac_types_checking=1 ;;
402 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
403 ac_fold_checking= ; ac_gc_checking= ;
404 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
405 ac_rtlflag_checking= ; ac_runtime_checking= ;
406 ac_tree_checking= ; ac_valgrind_checking= ;
407 ac_types_checking= ;;
408 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
409 ac_fold_checking=1 ; ac_gc_checking=1 ;
410 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
411 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
412 ac_tree_checking=1 ; ac_valgrind_checking= ;
413 ac_types_checking=1 ;;
414 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
415 ac_fold_checking= ; ac_gc_checking= ;
416 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
417 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
418 ac_tree_checking= ; ac_valgrind_checking= ;
419 ac_types_checking= ;;
420 # these enable particular checks
421 assert) ac_assert_checking=1 ;;
422 df) ac_df_checking=1 ;;
423 fold) ac_fold_checking=1 ;;
424 gc) ac_gc_checking=1 ;;
425 gcac) ac_gc_always_collect=1 ;;
426 gimple) ac_gimple_checking=1 ;;
427 misc) ac_checking=1 ;;
428 rtl) ac_rtl_checking=1 ;;
429 rtlflag) ac_rtlflag_checking=1 ;;
430 runtime) ac_runtime_checking=1 ;;
431 tree) ac_tree_checking=1 ;;
432 types) ac_types_checking=1 ;;
433 valgrind) ac_valgrind_checking=1 ;;
434 *) AC_MSG_ERROR(unknown check category $check) ;;
440 if test x$ac_checking != x ; then
441 AC_DEFINE(ENABLE_CHECKING, 1,
442 [Define if you want more run-time sanity checks. This one gets a grab
443 bag of miscellaneous but relatively cheap checks.])
444 nocommon_flag=-fno-common
446 AC_SUBST(nocommon_flag)
447 if test x$ac_df_checking != x ; then
448 AC_DEFINE(ENABLE_DF_CHECKING, 1,
449 [Define if you want more run-time sanity checks for dataflow.])
451 if test x$ac_assert_checking != x ; then
452 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
453 [Define if you want assertions enabled. This is a cheap check.])
455 if test x$ac_gimple_checking != x ; then
456 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
457 [Define if you want operations on GIMPLE (the basic data structure of
458 the high-level optimizers) to be checked for dynamic type safety at
459 runtime. This is moderately expensive.])
461 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
462 if test x$ac_runtime_checking != x ; then
463 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
464 [Define if you want runtime assertions enabled. This is a cheap check.])
466 if test x$ac_tree_checking != x ; then
467 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
468 [Define if you want all operations on trees (the basic data
469 structure of the front ends) to be checked for dynamic type safety
470 at runtime. This is moderately expensive. The tree browser debugging
471 routines will also be enabled by this option.
473 TREEBROWSER=tree-browser.o
475 if test x$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 if test x$ac_rtl_checking != x ; then
483 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
484 [Define if you want all operations on RTL (the basic data structure
485 of the optimizer and back end) to be checked for dynamic type safety
486 at runtime. This is quite expensive.])
488 if test x$ac_rtlflag_checking != x ; then
489 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
490 [Define if you want RTL flag accesses to be checked against the RTL
491 codes that are supported for each access macro. This is relatively
494 if test x$ac_gc_checking != x ; then
495 AC_DEFINE(ENABLE_GC_CHECKING, 1,
496 [Define if you want the garbage collector to do object poisoning and
497 other memory allocation checks. This is quite expensive.])
499 if test x$ac_gc_always_collect != x ; then
500 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
501 [Define if you want the garbage collector to operate in maximally
502 paranoid mode, validating the entire heap and collecting garbage at
503 every opportunity. This is extremely expensive.])
505 if test x$ac_fold_checking != x ; then
506 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
507 [Define if you want fold checked that it never destructs its argument.
508 This is quite expensive.])
510 valgrind_path_defines=
513 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
514 dnl # an if statement. This was the source of very frustrating bugs
515 dnl # in converting to autoconf 2.5x!
516 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
518 if test x$ac_valgrind_checking != x ; then
519 # It is certainly possible that there's valgrind but no valgrind.h.
520 # GCC relies on making annotations so we must have both.
521 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
522 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
523 [[#include <valgrind/memcheck.h>
524 #ifndef VALGRIND_DISCARD
525 #error VALGRIND_DISCARD not defined
527 [gcc_cv_header_valgrind_memcheck_h=yes],
528 [gcc_cv_header_valgrind_memcheck_h=no])
529 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
530 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
531 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
532 [[#include <memcheck.h>
533 #ifndef VALGRIND_DISCARD
534 #error VALGRIND_DISCARD not defined
536 [gcc_cv_header_memcheck_h=yes],
537 [gcc_cv_header_memcheck_h=no])
538 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
539 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
540 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
541 if test "x$valgrind_path" = "x" \
542 || (test $have_valgrind_h = no \
543 && test $gcc_cv_header_memcheck_h = no \
544 && test $gcc_cv_header_valgrind_memcheck_h = no); then
545 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
547 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
548 valgrind_command="$valgrind_path -q"
549 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
550 [Define if you want to run subprograms and generated programs
551 through valgrind (a memory checker). This is extremely expensive.])
552 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
553 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
554 [Define if valgrind's valgrind/memcheck.h header is installed.])
556 if test $gcc_cv_header_memcheck_h = yes; then
557 AC_DEFINE(HAVE_MEMCHECK_H, 1,
558 [Define if valgrind's memcheck.h header is installed.])
561 AC_SUBST(valgrind_path_defines)
562 AC_SUBST(valgrind_command)
564 # Enable code coverage collection
565 AC_ARG_ENABLE(coverage,
566 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
567 [enable compiler's code coverage collection.
568 Use to measure compiler performance and locate
569 unused parts of the compiler. With LEVEL, specify
570 optimization. Values are opt, noopt,
572 [case "${enableval}" in
574 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
577 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
580 # a.k.a. --disable-coverage
584 AC_MSG_ERROR(unknown coverage setting $enableval)
588 AC_SUBST(coverage_flags)
590 AC_ARG_ENABLE(gather-detailed-mem-stats,
591 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
592 [enable detailed memory allocation stats gathering])], [],
593 [enable_gather_detailed_mem_stats=no])
594 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
595 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
596 [Define to enable detailed memory allocation stats gathering.])
598 # -------------------------------
599 # Miscenalleous configure options
600 # -------------------------------
604 [AS_HELP_STRING([--with-stabs],
605 [arrange to use stabs instead of host debug format])],
609 # Determine whether or not multilibs are enabled.
610 AC_ARG_ENABLE(multilib,
611 [AS_HELP_STRING([--enable-multilib],
612 [enable library support for multiple ABIs])],
613 [], [enable_multilib=yes])
614 AC_SUBST(enable_multilib)
616 # Determine whether or not multiarch is enabled.
617 AC_ARG_ENABLE(multiarch,
618 [AS_HELP_STRING([--enable-multiarch],
619 [enable support for multiarch paths])],
620 [case "${enableval}" in
621 yes|no|auto) enable_multiarch=$enableval;;
622 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
623 esac], [enable_multiarch=auto])
624 if test x${enable_multiarch} = xauto; then
625 if test x${with_native_system_header_dir} != x; then
626 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
629 if test x$host != x$target && test "x$with_sysroot" = x; then
630 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
634 AC_MSG_CHECKING(for multiarch configuration)
635 AC_SUBST(enable_multiarch)
636 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
638 # needed for setting the multiarch name for soft-float/hard-float ABIs
642 # Enable __cxa_atexit for C++.
643 AC_ARG_ENABLE(__cxa_atexit,
644 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
647 # Enable C extension for decimal float if target supports it.
648 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
650 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
651 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
652 [Define to 1 to enable decimal float extension to C.])
654 # Use default_decimal_float for dependency.
655 enable_decimal_float=$default_decimal_float
657 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
658 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
659 [Define to 1 to specify that we are using the BID decimal floating
660 point format instead of DPD])
662 # Enable C extension for fixed-point arithmetic.
663 AC_ARG_ENABLE(fixed-point,
664 [AS_HELP_STRING([--enable-fixed-point],
665 [enable fixed-point arithmetic extension to C])],
670 enable_fixed_point=yes
674 enable_fixed_point=yes
677 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
678 enable_fixed_point=no
682 AC_SUBST(enable_fixed_point)
684 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
685 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
686 [Define to 1 to enable fixed-point arithmetic extension to C.])
689 # Pass with no value to take the default
690 # Pass with a value to specify a thread package
691 AC_ARG_ENABLE(threads,
692 [AS_HELP_STRING([[--enable-threads[=LIB]]],
693 [enable thread usage for target GCC,
694 using LIB thread package])],,
698 [AS_HELP_STRING([--enable-tls],
699 [enable or disable generation of tls code
700 overriding the assembler check for tls support])],
704 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
705 Valid choices are 'yes' and 'no'.]) ;;
709 AC_ARG_ENABLE(objc-gc,
710 [AS_HELP_STRING([--enable-objc-gc],
711 [enable the use of Boehm's garbage collector with
712 the GNU Objective-C runtime])],
713 if test x$enable_objc_gc = xno; then
721 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
722 dwarf2="$with_dwarf2",
725 AC_ARG_ENABLE(shared,
726 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
728 case $enable_shared in
732 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
733 for pkg in $enableval; do
734 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
741 ], [enable_shared=yes])
742 AC_SUBST(enable_shared)
744 AC_ARG_WITH([native-system-header-dir],
745 [ --with-native-system-header-dir=dir
746 use dir as the directory to look for standard
747 system header files in. Defaults to /usr/include.],
749 case ${with_native_system_header_dir} in
750 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
751 /* | [[A-Za-z]]:[[\\/]]*) ;;
752 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
754 configured_native_system_header_dir="${withval}"
755 ], [configured_native_system_header_dir=])
757 AC_ARG_WITH(build-sysroot,
758 [AS_HELP_STRING([--with-build-sysroot=sysroot],
759 [use sysroot as the system root during the build])],
760 [if test x"$withval" != x ; then
761 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
763 [SYSROOT_CFLAGS_FOR_TARGET=])
764 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
766 if test "x$prefix" = xNONE; then
767 test_prefix=/usr/local
771 if test "x$exec_prefix" = xNONE; then
772 test_exec_prefix=$test_prefix
774 test_exec_prefix=$exec_prefix
778 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
779 [search for usr/lib, usr/include, et al, within DIR])],
781 case ${with_sysroot} in
782 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
783 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
786 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
787 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
789 case ${TARGET_SYSTEM_ROOT} in
790 "${test_prefix}"|"${test_prefix}/"*|\
791 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
792 '${prefix}'|'${prefix}/'*|\
793 '${exec_prefix}'|'${exec_prefix}/'*)
794 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
795 TARGET_SYSTEM_ROOT_DEFINE="$t"
800 TARGET_SYSTEM_ROOT_DEFINE=
801 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
803 AC_SUBST(TARGET_SYSTEM_ROOT)
804 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
805 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
808 [AS_HELP_STRING([--with-specs=SPECS],
809 [add SPECS to driver command-line processing])],
810 [CONFIGURE_SPECS=$withval],
813 AC_SUBST(CONFIGURE_SPECS)
815 ACX_PKGVERSION([GCC])
816 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
818 # Sanity check enable_languages in case someone does not run the toplevel
819 # configure # script.
820 AC_ARG_ENABLE(languages,
821 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
822 [case ,${enable_languages}, in
824 # go safe -- we cannot be much sure without the toplevel
826 # analysis of which target libs are present and usable
830 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
835 enable_languages=c,${enable_languages}
838 [enable_languages=c])
840 AC_ARG_WITH(multilib-list,
841 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
843 with_multilib_list=default)
845 # -------------------------
846 # Checks for other programs
847 # -------------------------
851 # Find some useful tools
853 # We need awk to create options.c and options.h.
854 # Bail out if it's missing.
856 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
863 AC_SUBST(ranlib_flags)
867 # See if cmp has --ignore-initial.
868 gcc_AC_PROG_CMP_IGNORE_INITIAL
870 # See if we have the mktemp command.
871 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
873 # See if makeinfo has been installed and is modern enough
874 # that we can use it.
875 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
876 [GNU texinfo.* \([0-9][0-9.]*\)],
877 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
878 if test $gcc_cv_prog_makeinfo_modern = no; then
880 *** Makeinfo is missing or too old.
881 *** Info documentation will not be built.])
888 # Is pod2man recent enough to regenerate manpages?
889 AC_MSG_CHECKING([for recent Pod::Man])
890 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
892 GENERATED_MANPAGES=generated-manpages
897 AC_SUBST(GENERATED_MANPAGES)
899 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
902 dnl Don't use AC_PROG_LEX; we insist on flex.
903 dnl LEXLIB is not useful in gcc.
904 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
907 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
909 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
910 # check for build == host before using them.
913 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
914 && test -d ../binutils ; then
915 NM='${objdir}/../binutils/nm-new'
917 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
921 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
922 && test -d ../binutils ; then
923 AR='${objdir}/../binutils/ar'
925 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
929 # --------------------
930 # Checks for C headers
931 # --------------------
933 # Need to reject headers which give warnings, so that the -Werror bootstrap
934 # works later. *sigh* This needs to come before all header checks.
941 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
942 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
943 sys/resource.h sys/param.h sys/times.h sys/stat.h \
944 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h libintl.h)
946 # Check for thread headers.
947 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
948 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
950 # These tests can't be done till we know if we have limits.h.
954 # ----------------------
955 # Checks for C++ headers
956 # ----------------------
958 dnl Autoconf will give an error in the configure script if there is no
959 dnl C++ preprocessor. Hack to prevent that.
960 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
962 m4_popdef([AC_MSG_ERROR])[]dnl
966 AC_CHECK_HEADERS(unordered_map)
967 AC_CHECK_HEADERS(tr1/unordered_map)
968 AC_CHECK_HEADERS(ext/hash_map)
977 # These libraries may be used by collect2.
978 # We may need a special search path to get them linked.
979 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
981 for libs in '' -lld -lmld \
982 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
983 '-L/usr/lib/cmplrs/cc3.11 -lmld'
986 AC_TRY_LINK_FUNC(ldopen,
987 [gcc_cv_collect2_libs="$libs"; break])
990 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
991 case $gcc_cv_collect2_libs in
993 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
995 AC_SUBST(COLLECT2_LIBS)
997 # When building Ada code on Alpha, we need exc_resume which is usually in
998 # -lexc. So test for it.
1001 AC_SEARCH_LIBS(exc_resume, exc)
1004 AC_SUBST(GNAT_LIBEXC)
1006 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1009 AC_SEARCH_LIBS(kstat_open, kstat)
1010 EXTRA_GCC_LIBS="$LIBS"
1012 AC_SUBST(EXTRA_GCC_LIBS)
1014 # Some systems put ldexp and frexp in libm instead of libc; assume
1015 # they're both in the same place. jcf-dump needs them.
1018 AC_SEARCH_LIBS(ldexp, m)
1023 # Use <inttypes.h> only if it exists,
1024 # doesn't clash with <sys/types.h>, and declares intmax_t.
1025 AC_MSG_CHECKING(for inttypes.h)
1026 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1027 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1028 [[#include <sys/types.h>
1029 #include <inttypes.h>]],
1030 [[intmax_t i = -1;]])],
1031 [gcc_cv_header_inttypes_h=yes],
1032 [gcc_cv_header_inttypes_h=no])])
1033 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1034 if test $gcc_cv_header_inttypes_h = yes; then
1035 AC_DEFINE(HAVE_INTTYPES_H, 1,
1036 [Define if you have a working <inttypes.h> header file.])
1039 dnl Disabled until we have a complete test for buggy enum bitfields.
1040 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1042 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1043 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1044 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1045 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1046 putchar_unlocked putc_unlocked)
1047 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1048 sysconf strsignal getrusage nl_langinfo \
1049 gettimeofday mbstowcs wcswidth mmap setlocale \
1050 gcc_UNLOCKED_FUNCS madvise)
1052 if test x$ac_cv_func_mbstowcs = xyes; then
1053 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1054 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1060 [gcc_cv_func_mbstowcs_works=yes],
1061 [gcc_cv_func_mbstowcs_works=no],
1062 [gcc_cv_func_mbstowcs_works=yes])])
1063 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1064 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1065 [Define this macro if mbstowcs does not crash when its
1066 first argument is NULL.])
1070 AC_CHECK_TYPE(ssize_t, int)
1071 AC_CHECK_TYPE(caddr_t, char *)
1073 GCC_AC_FUNC_MMAP_BLACKLIST
1077 # Under VMS, vfork works very differently than on Unix. The standard test
1078 # won't work, and it isn't easily adaptable. It makes more sense to
1080 ac_cv_func_vfork_works=yes
1085 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1086 # iconv() prototype.
1091 # Until we have in-tree GNU iconv:
1093 AC_SUBST(LIBICONV_DEP)
1099 # We will need to find libiberty.h and ansidecl.h
1100 saved_CFLAGS="$CFLAGS"
1101 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1102 saved_CXXFLAGS="$CXXFLAGS"
1103 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1104 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1105 strsignal strstr stpcpy strverscmp \
1106 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1107 free basename getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1108 #include "ansidecl.h"
1109 #include "system.h"])
1111 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1112 #include "ansidecl.h"
1114 #ifdef HAVE_SYS_RESOURCE_H
1115 #include <sys/resource.h>
1119 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1120 #include "ansidecl.h"
1122 #ifdef HAVE_SYS_RESOURCE_H
1123 #include <sys/resource.h>
1125 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1126 [Define to `long' if <sys/resource.h> doesn't define.])])
1128 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1129 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1130 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1131 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1132 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1133 #include "ansidecl.h"
1142 gcc_AC_CHECK_DECLS(times, , ,[
1143 #include "ansidecl.h"
1145 #ifdef HAVE_SYS_TIMES_H
1146 #include <sys/times.h>
1150 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1151 #include "ansidecl.h"
1156 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1159 gcc_AC_CHECK_DECLS(madvise, , ,[
1160 #include "ansidecl.h"
1165 # More time-related stuff.
1166 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1167 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1168 #include "ansidecl.h"
1170 #ifdef HAVE_SYS_TIMES_H
1171 #include <sys/times.h>
1173 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1174 if test $ac_cv_struct_tms = yes; then
1175 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1176 [Define if <sys/times.h> defines struct tms.])
1179 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1180 # revisit after autoconf 2.50.
1181 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1182 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1183 #include "ansidecl.h"
1185 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1186 if test $gcc_cv_type_clock_t = yes; then
1187 AC_DEFINE(HAVE_CLOCK_T, 1,
1188 [Define if <time.h> defines clock_t.])
1191 # Check if F_SETLKW is supported by fcntl.
1192 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1193 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1194 #include <fcntl.h>]], [[
1200 return fcntl (1, F_SETLKW, &fl);]])],
1201 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1202 if test $ac_cv_f_setlkw = yes; then
1203 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1204 [Define if F_SETLKW supported by fcntl.])
1207 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1208 CFLAGS="$saved_CFLAGS"
1209 CXXFLAGS="$saved_CXXFLAGS"
1211 # mkdir takes a single argument on some systems.
1212 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1220 # With Setjmp/Longjmp based exception handling.
1221 AC_ARG_ENABLE(sjlj-exceptions,
1222 [AS_HELP_STRING([--enable-sjlj-exceptions],
1223 [arrange to use setjmp/longjmp exception handling])],
1226 if test $enableval != yes; then
1227 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1232 force_sjlj_exceptions=yes],
1235 force_sjlj_exceptions=yes
1239 force_sjlj_exceptions=no
1242 if test $force_sjlj_exceptions = yes; then
1243 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1244 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1245 [Define 0/1 to force the choice for exception handling model.])
1248 # --------------------------------------------------------
1249 # Build, host, and target specific configuration fragments
1250 # --------------------------------------------------------
1252 # Collect build-machine-specific information.
1253 . ${srcdir}/config.build
1255 # Collect host-machine-specific information.
1256 . ${srcdir}/config.host
1260 # Collect target-machine-specific information.
1261 . ${srcdir}/config.gcc
1263 extra_objs="${host_extra_objs} ${extra_objs}"
1264 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1266 # Default the target-machine variables that were not explicitly set.
1267 if test x"$tm_file" = x
1268 then tm_file=$cpu_type/$cpu_type.h; fi
1270 if test x"$extra_headers" = x
1271 then extra_headers=; fi
1273 if test x$md_file = x
1274 then md_file=$cpu_type/$cpu_type.md; fi
1276 if test x$out_file = x
1277 then out_file=$cpu_type/$cpu_type.c; fi
1279 if test x"$tmake_file" = x
1280 then tmake_file=$cpu_type/t-$cpu_type
1283 # Support --enable-initfini-array.
1284 if test x$enable_initfini_array != xno; then
1285 tm_file="${tm_file} initfini-array.h"
1288 if test x"$dwarf2" = xyes
1289 then tm_file="$tm_file tm-dwarf2.h"
1292 # Say what files are being used for the output code and MD file.
1293 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1294 echo "Using \`$srcdir/config/$md_file' as machine description file."
1296 # If any of the xm_file variables contain nonexistent files, warn
1297 # about them and drop them.
1300 for x in $build_xm_file; do
1301 if test -f $srcdir/config/$x
1303 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1309 for x in $host_xm_file; do
1310 if test -f $srcdir/config/$x
1312 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1318 for x in $xm_file; do
1319 if test -f $srcdir/config/$x
1321 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1327 for f in $tm_file; do
1330 if test $count = ax; then
1331 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1333 echo "Using the following target machine macro files:"
1334 for f in $tm_file; do
1335 echo " $srcdir/config/$f"
1339 if test x$need_64bit_hwint = xyes; then
1340 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1341 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1344 if test x$use_long_long_for_widest_fast_int = xyes; then
1345 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1346 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1347 efficiently supported by the host hardware.])
1350 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1351 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1353 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1354 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1357 for f in $host_xm_file; do
1360 if test $count = a; then
1362 elif test $count = ax; then
1363 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1365 echo "Using the following host machine macro files:"
1366 for f in $host_xm_file; do
1367 echo " $srcdir/config/$f"
1370 echo "Using ${out_host_hook_obj} for host machine hooks."
1372 if test "$host_xm_file" != "$build_xm_file"; then
1374 for f in $build_xm_file; do
1377 if test $count = a; then
1379 elif test $count = ax; then
1380 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1382 echo "Using the following build machine macro files:"
1383 for f in $build_xm_file; do
1384 echo " $srcdir/config/$f"
1389 if test -n "$configured_native_system_header_dir"; then
1390 native_system_header_dir=$configured_native_system_header_dir
1392 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1393 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1397 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1398 gcc_cv_mcontext_underscores,
1400 #include <sys/cdefs.h>
1401 #include <sys/signal.h>
1402 #include <ucontext.h>
1403 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1405 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1406 if test $gcc_cv_mcontext_underscores = yes; then
1407 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1408 [mcontext_t fields start with __])
1417 # Check if a valid thread package
1418 case ${enable_threads} in
1421 target_thread_file='single'
1425 target_thread_file='single'
1427 aix | dce | lynx | mipssde | posix | rtems | \
1428 single | tpf | vxworks | win32)
1429 target_thread_file=${enable_threads}
1432 echo "${enable_threads} is an unknown thread package" 1>&2
1437 if test x${thread_file} = x; then
1438 # No thread file set by target-specific clauses in config.gcc,
1439 # so use file chosen by default logic above
1440 thread_file=${target_thread_file}
1448 if test x$enable___cxa_atexit = xyes || \
1449 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1450 if test x$host = x$target; then
1452 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1453 # keyed to flag_use_cxa_atexit
1458 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1459 [echo "__cxa_atexit can't be enabled on this target"])
1463 # We can't check for __cxa_atexit when building a cross, so assume
1467 if test x$use_cxa_atexit = xyes; then
1468 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1469 [Define if you want to use __cxa_atexit, rather than atexit, to
1470 register C++ destructors for local statics and global objects.
1471 This is essential for fully standards-compliant handling of
1472 destructors, but requires __cxa_atexit in libc.])
1476 # Look for a file containing extra machine modes.
1477 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1478 extra_modes_file='$(srcdir)'/config/${extra_modes}
1479 AC_SUBST(extra_modes_file)
1480 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1481 [Define to the name of a file containing a list of extra machine modes
1482 for this architecture.])
1485 # Convert extra_options into a form suitable for Makefile use.
1488 for f in $extra_options; do
1489 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1490 all_opt_files="$all_opt_files $srcdir/config/$f"
1492 AC_SUBST(extra_opt_files)
1494 # auto-host.h is the file containing items generated by autoconf and is
1495 # the first file included by config.h.
1496 # If host=build, it is correct to have bconfig include auto-host.h
1497 # as well. If host!=build, we are in error and need to do more
1498 # work to find out the build config parameters.
1499 if test x$host = x$build
1501 build_auto=auto-host.h
1503 # We create a subdir, then run autoconf in the subdir.
1504 # To prevent recursion we set host and build for the new
1505 # invocation of configure to the build for this invocation
1512 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1513 *) realsrcdir=../${srcdir};;
1515 saved_CFLAGS="${CFLAGS}"
1516 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1517 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1518 ${realsrcdir}/configure \
1519 --enable-languages=${enable_languages-all} \
1520 --target=$target_alias --host=$build_alias --build=$build_alias
1521 CFLAGS="${saved_CFLAGS}"
1523 # We just finished tests for the build machine, so rename
1524 # the file auto-build.h in the gcc directory.
1525 mv auto-host.h ../auto-build.h
1528 build_auto=auto-build.h
1530 AC_SUBST(build_subdir)
1532 tm_file="${tm_file} defaults.h"
1533 tm_p_file="${tm_p_file} tm-preds.h"
1534 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1535 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1536 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1537 # put this back in temporarily.
1538 xm_file="auto-host.h ansidecl.h ${xm_file}"
1545 # Compile in configure arguments.
1546 if test -f configargs.h ; then
1547 # Being re-configured.
1548 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1549 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1551 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1554 # Double all backslashes and backslash all quotes to turn
1555 # gcc_config_arguments into a C string.
1556 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1557 $gcc_config_arguments
1559 gcc_config_arguments_str=`cat conftest.out`
1562 cat > configargs.h <<EOF
1563 /* Generated automatically. */
1564 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1565 static const char thread_model[] = "$thread_file";
1567 static const struct {
1568 const char *name, *value;
1569 } configure_default_options[] = $configure_default_options;
1574 gcc_BASEVER=`cat $srcdir/BASE-VER`
1575 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1576 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1577 if test -f $srcdir/REVISION ; then
1578 gcc_REVISION=`cat $srcdir/REVISION`
1582 cat > plugin-version.h <<EOF
1583 #include "configargs.h"
1585 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1586 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1587 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1588 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1590 static char basever[] = "$gcc_BASEVER";
1591 static char datestamp[] = "$gcc_DATESTAMP";
1592 static char devphase[] = "$gcc_DEVPHASE";
1593 static char revision[] = "$gcc_REVISION";
1595 /* FIXME plugins: We should make the version information more precise.
1596 One way to do is to add a checksum. */
1598 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1600 configuration_arguments};
1604 # Internationalization
1605 ZW_GNU_GETTEXT_SISTER_DIR
1607 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1608 # -liconv on the link line twice.
1609 case "$LIBINTL" in *$LIBICONV*)
1613 AC_ARG_ENABLE(secureplt,
1614 [AS_HELP_STRING([--enable-secureplt],
1615 [enable -msecure-plt by default for PowerPC])],
1618 AC_ARG_ENABLE(leading-mingw64-underscores,
1619 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1620 [enable leading underscores on 64 bit mingw targets]),
1622 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1623 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1624 [Define if we should use leading underscore on 64 bit mingw targets])])
1627 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1630 AC_ARG_ENABLE(frame-pointer,
1631 [AS_HELP_STRING([--enable-frame-pointer],
1632 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1635 linux* | darwin[[8912]]*)
1636 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1638 enable_frame_pointer=no
1641 enable_frame_pointer=yes
1646 # Windows32 Registry support for specifying GCC installation paths.
1647 AC_ARG_ENABLE(win32-registry,
1648 [AS_HELP_STRING([--disable-win32-registry],
1649 [disable lookup of installation paths in the
1650 Registry on Windows hosts])
1651 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1652 AS_HELP_STRING([--enable-win32-registry=KEY],
1653 [use KEY instead of GCC version as the last portion
1654 of the registry key])],,)
1657 win32 | pe | cygwin* | mingw32* | uwin*)
1658 if test "x$enable_win32_registry" != xno; then
1659 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1662 if test "x$enable_win32_registry" != xno; then
1663 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1664 [Define to 1 if installation paths should be looked up in the Windows
1665 Registry. Ignored on non-Windows hosts.])
1667 if test "x$enable_win32_registry" != xyes \
1668 && test "x$enable_win32_registry" != x; then
1669 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1670 [Define to be the last component of the Windows registry key under which
1671 to look for installation paths. The full key used will be
1672 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1673 The default is the GCC version number.])
1679 # Get an absolute path to the GCC top-level source directory
1680 holddir=`${PWDCMD-pwd}`
1682 topdir=`${PWDCMD-pwd}`
1685 # Conditionalize the makefile for this host machine.
1687 for f in ${host_xmake_file}
1689 if test -f ${srcdir}/config/$f
1691 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1695 # Conditionalize the makefile for this target machine.
1697 for f in ${tmake_file}
1699 if test -f ${srcdir}/config/$f
1701 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1704 tmake_file="${tmake_file_}"
1706 out_object_file=`basename $out_file .c`.o
1707 common_out_object_file=`basename $common_out_file .c`.o
1709 tm_file_list="options.h"
1710 tm_include_list="options.h insn-constants.h"
1711 for f in $tm_file; do
1714 f=`echo $f | sed 's/^..//'`
1715 tm_file_list="${tm_file_list} $f"
1716 tm_include_list="${tm_include_list} $f"
1719 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1720 tm_include_list="${tm_include_list} $f"
1723 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1724 tm_include_list="${tm_include_list} config/$f"
1731 for f in $tm_p_file; do
1734 tm_p_file_list="${tm_p_file_list} $f"
1735 tm_p_include_list="${tm_p_include_list} $f"
1738 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1739 tm_p_include_list="${tm_p_include_list} config/$f"
1745 for f in $xm_file; do
1748 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1749 xm_include_list="${xm_include_list} $f"
1752 xm_file_list="${xm_file_list} $f"
1753 xm_include_list="${xm_include_list} $f"
1756 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1757 xm_include_list="${xm_include_list} config/$f"
1763 host_xm_include_list=
1764 for f in $host_xm_file; do
1767 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1768 host_xm_include_list="${host_xm_include_list} $f"
1771 host_xm_file_list="${host_xm_file_list} $f"
1772 host_xm_include_list="${host_xm_include_list} $f"
1775 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1776 host_xm_include_list="${host_xm_include_list} config/$f"
1782 for f in $build_xm_file; do
1785 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1786 build_xm_include_list="${build_xm_include_list} $f"
1788 auto-build.h | auto-host.h )
1789 build_xm_file_list="${build_xm_file_list} $f"
1790 build_xm_include_list="${build_xm_include_list} $f"
1793 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1794 build_xm_include_list="${build_xm_include_list} config/$f"
1799 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1800 # cross-compiler which does not use the native headers and libraries.
1801 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1802 CROSS= AC_SUBST(CROSS)
1803 ALL=all.internal AC_SUBST(ALL)
1804 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1806 if test "x$with_build_sysroot" != x; then
1807 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1809 # This value is used, even on a native system, because
1810 # CROSS_SYSTEM_HEADER_DIR is just
1811 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1812 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1815 if test x$host != x$target
1817 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1819 SYSTEM_HEADER_DIR=$build_system_header_dir
1820 case "$host","$target" in
1821 # Darwin crosses can use the host system's libraries and headers,
1822 # because of the fat library support. Of course, it must be the
1823 # same version of Darwin on both sides. Allow the user to
1824 # just say --target=foo-darwin without a version number to mean
1825 # "the version on this system".
1826 *-*-darwin*,*-*-darwin*)
1827 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1828 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1829 if test $hostos = $targetos -o $targetos = darwin ; then
1831 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1836 i?86-*-*,x86_64-*-* \
1837 | powerpc*-*-*,powerpc64*-*-*)
1838 CROSS="$CROSS -DNATIVE_CROSS" ;;
1843 if test "x$with_headers" = x; then
1850 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1851 SYSTEM_HEADER_DIR=$build_system_header_dir
1854 # If this is a cross-compiler that does not
1855 # have its own set of headers then define
1858 # If this is using newlib, without having the headers available now,
1859 # then define inhibit_libc in LIBGCC2_CFLAGS.
1860 # This prevents libgcc2 from containing any code which requires libc
1862 : ${inhibit_libc=false}
1863 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1864 test x$with_newlib = xyes ; } &&
1865 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1868 AC_SUBST(inhibit_libc)
1870 # When building gcc with a cross-compiler, we need to adjust things so
1871 # that the generator programs are still built with the native compiler.
1872 # Also, we cannot run fixincludes.
1874 # These are the normal (build=host) settings:
1875 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1876 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
1877 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1878 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
1879 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1880 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1882 # And these apply if build != host, or we are generating coverage data
1883 if test x$build != x$host || test "x$coverage_flags" != x
1885 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1886 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1889 # Expand extra_headers to include complete path.
1890 # This substitutes for lots of t-* files.
1892 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1893 for file in ${extra_headers} ; do
1894 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1897 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1898 if test x"$use_gcc_tgmath" = xyes
1899 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1902 # Define collect2 in Makefile.
1903 case $host_can_use_collect2 in
1905 *) collect2='collect2$(exeext)' ;;
1907 AC_SUBST([collect2])
1909 # Add a definition of USE_COLLECT2 if system wants one.
1910 case $use_collect2 in
1911 no) use_collect2= ;;
1914 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1915 xm_defines="${xm_defines} USE_COLLECT2"
1916 case $host_can_use_collect2 in
1918 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1924 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1925 [Define to the name of the LTO plugin DSO that must be
1926 passed to the linker's -plugin=LIB option.])
1928 # ---------------------------
1929 # Assembler & linker features
1930 # ---------------------------
1932 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1933 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1934 # However when ld-new is first executed from the build tree, libtool will
1935 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1936 # to the build tree. While doing this we need to use the previous-stage
1937 # linker, or we have an infinite loop. The presence of a shell script as
1938 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1939 # the gcc/collect-ld script. So we need to know how libtool works, or
1940 # exec-tool will fail.
1942 m4_defun([_LT_CONFIG_COMMANDS], [])
1945 AC_SUBST(enable_fast_install)
1947 # Identify the assembler which will work hand-in-glove with the newly
1948 # built GCC, so that we can examine its features. This is the assembler
1949 # which will be driven by the driver program.
1951 # If build != host, and we aren't building gas in-tree, we identify a
1952 # build->target assembler and hope that it will have the same features
1953 # as the host->target assembler we'll be using.
1954 gcc_cv_gas_major_version=
1955 gcc_cv_gas_minor_version=
1956 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1958 m4_pattern_allow([AS_FOR_TARGET])dnl
1959 AS_VAR_SET_IF(gcc_cv_as,, [
1960 if test -x "$DEFAULT_ASSEMBLER"; then
1961 gcc_cv_as="$DEFAULT_ASSEMBLER"
1962 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1963 && test -f ../gas/Makefile \
1964 && test x$build = x$host; then
1965 gcc_cv_as=../gas/as-new$build_exeext
1966 elif test -x as$build_exeext; then
1967 # Build using assembler in the current directory.
1968 gcc_cv_as=./as$build_exeext
1969 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1970 gcc_cv_as="$AS_FOR_TARGET"
1972 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1975 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1976 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1977 case "$ORIGINAL_AS_FOR_TARGET" in
1978 ./as | ./as$build_exeext) ;;
1979 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1982 AC_MSG_CHECKING(what assembler to use)
1983 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1984 # Single tree build which includes gas. We want to prefer it
1985 # over whatever linker top-level may have detected, since
1986 # we'll use what we're building after installation anyway.
1987 AC_MSG_RESULT(newly built gas)
1989 _gcc_COMPUTE_GAS_VERSION
1990 in_tree_gas_is_elf=no
1991 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1992 || (grep 'obj_format = multi' ../gas/Makefile \
1993 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1995 in_tree_gas_is_elf=yes
1998 AC_MSG_RESULT($gcc_cv_as)
2002 # Identify the linker which will work hand-in-glove with the newly
2003 # built GCC, so that we can examine its features. This is the linker
2004 # which will be driven by the driver program.
2006 # If build != host, and we aren't building gas in-tree, we identify a
2007 # build->target linker and hope that it will have the same features
2008 # as the host->target linker we'll be using.
2009 gcc_cv_gld_major_version=
2010 gcc_cv_gld_minor_version=
2011 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2012 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2014 AS_VAR_SET_IF(gcc_cv_ld,, [
2015 if test -x "$DEFAULT_LINKER"; then
2016 gcc_cv_ld="$DEFAULT_LINKER"
2017 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2018 && test -f ../ld/Makefile \
2019 && test x$build = x$host; then
2020 gcc_cv_ld=../ld/ld-new$build_exeext
2021 elif test -x collect-ld$build_exeext; then
2022 # Build using linker in the current directory.
2023 gcc_cv_ld=./collect-ld$build_exeext
2024 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2025 gcc_cv_ld="$LD_FOR_TARGET"
2027 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2030 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2031 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2032 # if the PLUGIN_LD is set ld-new, just have it as ld
2033 # as that is the installed named.
2034 if test x$PLUGIN_LD_SUFFIX = xld-new \
2035 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2038 AC_ARG_WITH(plugin-ld,
2039 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2040 [if test x"$withval" != x; then
2041 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2042 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2044 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2045 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2047 # Check to see if we are using gold instead of ld
2048 AC_MSG_CHECKING(whether we are using gold)
2050 if test x$gcc_cv_ld != x; then
2051 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2052 | grep "GNU gold" > /dev/null; then
2056 AC_MSG_RESULT($ld_is_gold)
2058 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2059 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2060 case "$ORIGINAL_LD_FOR_TARGET" in
2061 ./collect-ld | ./collect-ld$build_exeext) ;;
2062 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2065 AC_MSG_CHECKING(what linker to use)
2066 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2067 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2068 # Single tree build which includes ld. We want to prefer it
2069 # over whatever linker top-level may have detected, since
2070 # we'll use what we're building after installation anyway.
2071 AC_MSG_RESULT(newly built ld)
2073 in_tree_ld_is_elf=no
2074 if (grep 'EMUL = .*elf' ../ld/Makefile \
2075 || grep 'EMUL = .*linux' ../ld/Makefile \
2076 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2077 in_tree_ld_is_elf=yes
2078 elif test "$ld_is_gold" = yes; then
2079 in_tree_ld_is_elf=yes
2081 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
2084 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2085 if test x$gcc_cv_gld_version != x; then
2089 case $gcc_cv_gld_version in
2092 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2095 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2096 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2099 AC_MSG_RESULT($gcc_cv_ld)
2103 # Figure out what nm we will be using.
2104 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2105 AS_VAR_SET_IF(gcc_cv_nm,, [
2106 if test -f $gcc_cv_binutils_srcdir/configure.in \
2107 && test -f ../binutils/Makefile \
2108 && test x$build = x$host; then
2109 gcc_cv_nm=../binutils/nm-new$build_exeext
2110 elif test -x nm$build_exeext; then
2111 gcc_cv_nm=./nm$build_exeext
2112 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2113 gcc_cv_nm="$NM_FOR_TARGET"
2115 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2118 AC_MSG_CHECKING(what nm to use)
2119 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2120 # Single tree build which includes binutils.
2121 AC_MSG_RESULT(newly built nm)
2124 AC_MSG_RESULT($gcc_cv_nm)
2128 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2129 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2130 case "$ORIGINAL_NM_FOR_TARGET" in
2131 ./nm | ./nm$build_exeext) ;;
2132 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2136 # Figure out what objdump we will be using.
2137 AS_VAR_SET_IF(gcc_cv_objdump,, [
2138 if test -f $gcc_cv_binutils_srcdir/configure.in \
2139 && test -f ../binutils/Makefile \
2140 && test x$build = x$host; then
2141 # Single tree build which includes binutils.
2142 gcc_cv_objdump=../binutils/objdump$build_exeext
2143 elif test -x objdump$build_exeext; then
2144 gcc_cv_objdump=./objdump$build_exeext
2145 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2146 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2148 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2151 AC_MSG_CHECKING(what objdump to use)
2152 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2153 # Single tree build which includes binutils.
2154 AC_MSG_RESULT(newly built objdump)
2155 elif test x$gcc_cv_objdump = x; then
2156 AC_MSG_RESULT(not found)
2158 AC_MSG_RESULT($gcc_cv_objdump)
2161 # Figure out what readelf we will be using.
2162 AS_VAR_SET_IF(gcc_cv_readelf,, [
2163 if test -f $gcc_cv_binutils_srcdir/configure.in \
2164 && test -f ../binutils/Makefile \
2165 && test x$build = x$host; then
2166 # Single tree build which includes binutils.
2167 gcc_cv_readelf=../binutils/readelf$build_exeext
2168 elif test -x readelf$build_exeext; then
2169 gcc_cv_readelf=./readelf$build_exeext
2171 AC_PATH_PROG(gcc_cv_readelf, readelf)
2174 AC_MSG_CHECKING(what readelf to use)
2175 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2176 # Single tree build which includes binutils.
2177 AC_MSG_RESULT(newly built readelf)
2178 elif test x$gcc_cv_readelf = x; then
2179 AC_MSG_RESULT(not found)
2181 AC_MSG_RESULT($gcc_cv_readelf)
2184 # Figure out what assembler alignment features are present.
2185 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2189 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2190 [Define if your assembler supports .balign and .p2align.])])
2192 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2195 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2196 [Define if your assembler supports specifying the maximum number
2197 of bytes to skip when using the GAS .p2align command.])])
2199 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2202 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2203 [Define if your assembler supports .literal16.])])
2205 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2207 [conftest_label1: .word 0
2209 conftest_label2: .word 0
2211 [if test x$gcc_cv_nm != x; then
2212 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2213 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2214 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2216 else gcc_cv_as_subsection_m1=yes
2218 rm -f conftest.nm1 conftest.nm2
2220 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2221 [Define if your assembler supports .subsection and .subsection -1 starts
2222 emitting at the beginning of your section.])])
2224 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2227 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2229 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2231 [ .weakref foobar, barfnot],,
2232 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2234 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2237 .NSUBSPA $CODE$,COMDAT],,
2238 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2240 # .hidden needs to be supported in both the assembler and the linker,
2241 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2242 # This is irritatingly difficult to feature test for; we have to check the
2243 # date string after the version number. If we've got an in-tree
2244 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2246 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2247 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2251 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2252 # STV_HIDDEN, so disable .hidden support if so.
2254 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2255 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2256 cat > conftest.s <<EOF
2263 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2264 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2265 grep '\.hidden default' > /dev/null; then
2268 gcc_cv_as_hidden=yes
2271 # Assume bug is present if objdump is missing.
2276 gcc_cv_as_hidden=yes
2281 # Darwin as has some visibility support, though with a different syntax.
2282 gcc_cv_as_hidden=yes
2286 # gnu_indirect_function type is an extension proposed at
2287 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2288 # selection of function implementation
2289 AC_ARG_ENABLE(gnu-indirect-function,
2290 [AS_HELP_STRING([--enable-gnu-indirect-function],
2291 [enable the use of the @gnu_indirect_function to glibc systems])],
2292 [case $enable_gnu_indirect_function in
2294 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2295 Valid choices are 'yes' and 'no'.]) ;;
2297 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2298 if test x$enable_gnu_indirect_function = xyes; then
2299 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2300 [Define if your system supports gnu indirect functions.])
2304 if test $in_tree_ld != yes ; then
2305 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2306 if echo "$ld_ver" | grep GNU > /dev/null; then
2307 if test x"$ld_is_gold" = xyes; then
2308 # GNU gold --version looks like this:
2310 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2312 # We extract the binutils version which is more familiar and specific
2313 # than the gold version.
2314 ld_vers=`echo $ld_ver | sed -n \
2315 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2317 # GNU ld --version looks like this:
2319 # GNU ld (GNU Binutils) 2.21.51.20110225
2320 ld_vers=`echo $ld_ver | sed -n \
2321 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2323 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2324 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2325 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2326 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2330 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2333 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2334 # /usr/ccs/bin/ld has been configured.
2335 ld_ver=`$gcc_cv_ld -V 2>&1`
2336 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2337 ld_vers=`echo $ld_ver | sed -n \
2338 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2339 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2340 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2348 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2349 [[if test $in_tree_ld = yes ; then
2351 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2352 && test $in_tree_ld_is_elf = yes; then
2353 gcc_cv_ld_hidden=yes
2356 gcc_cv_ld_hidden=yes
2357 if test x"$ld_is_gold" = xyes; then
2359 elif echo "$ld_ver" | grep GNU > /dev/null; then
2361 mmix-knuth-mmixware)
2362 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2366 if test 0"$ld_date" -lt 20020404; then
2367 if test -n "$ld_date"; then
2368 # If there was date string, but was earlier than 2002-04-04, fail
2370 elif test -z "$ld_vers"; then
2371 # If there was no date string nor ld version number, something is wrong
2374 test -z "$ld_vers_patch" && ld_vers_patch=0
2375 if test "$ld_vers_major" -lt 2; then
2377 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2378 gcc_cv_ld_hidden="no"
2379 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2387 # Darwin ld has some visibility support.
2388 gcc_cv_ld_hidden=yes
2390 hppa64*-*-hpux* | ia64*-*-hpux*)
2391 gcc_cv_ld_hidden=yes
2393 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2394 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2395 # .symbolic was only added in Solaris 9 12/02.
2396 gcc_cv_ld_hidden=yes
2404 libgcc_visibility=no
2405 AC_SUBST(libgcc_visibility)
2406 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2407 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2408 libgcc_visibility=yes
2409 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2410 [Define if your assembler and linker support .hidden.])
2413 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2414 gcc_cv_ld_ro_rw_mix=unknown
2415 if test $in_tree_ld = yes ; then
2416 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2417 && test $in_tree_ld_is_elf = yes; then
2418 gcc_cv_ld_ro_rw_mix=read-write
2420 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2421 echo '.section myfoosect, "a"' > conftest1.s
2422 echo '.section myfoosect, "aw"' > conftest2.s
2423 echo '.byte 1' >> conftest2.s
2424 echo '.section myfoosect, "a"' > conftest3.s
2425 echo '.byte 0' >> conftest3.s
2426 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2427 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2428 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2429 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2430 conftest2.o conftest3.o > /dev/null 2>&1; then
2431 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2432 | sed -e '/myfoosect/!d' -e N`
2433 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2434 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2435 gcc_cv_ld_ro_rw_mix=read-only
2437 gcc_cv_ld_ro_rw_mix=read-write
2442 rm -f conftest.* conftest[123].*
2445 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2446 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2447 [Define if your linker links a mix of read-only
2448 and read-write sections into a read-write section.])
2450 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2452 gcc_AC_INITFINI_ARRAY
2454 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2455 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2463 [[# GAS versions before 2.11 do not support uleb128,
2464 # despite appearing to.
2465 # ??? There exists an elf-specific test that will crash
2466 # the assembler. Perhaps it's better to figure out whether
2467 # arbitrary sections are supported and try the test.
2468 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2469 if echo "$as_ver" | grep GNU > /dev/null; then
2470 as_vers=`echo $as_ver | sed -n \
2471 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2472 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2473 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2474 if test $as_major -eq 2 && test $as_minor -lt 11
2476 else gcc_cv_as_leb128=yes
2479 [AC_DEFINE(HAVE_AS_LEB128, 1,
2480 [Define if your assembler supports .sleb128 and .uleb128.])])
2482 # Check if we have assembler support for unwind directives.
2483 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2490 .cfi_escape 1, 2, 3, 4, 5
2494 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2495 # read-only and read-write sections, we need to make sure that the
2496 # assembler used emits read-write .eh_frame sections.
2497 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2498 if test "x$gcc_cv_objdump" != x; then
2499 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2500 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2501 gcc_cv_as_cfi_directive=no
2504 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2505 # On Solaris/x86, make sure that GCC and gas agree on using
2506 # read-only .eh_frame sections for 64-bit.
2507 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2508 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2509 sed -e /.eh_frame/!d -e N | \
2510 grep READONLY > /dev/null; then
2511 gcc_cv_as_cfi_directive=yes
2513 gcc_cv_as_cfi_directive=no
2517 gcc_cv_as_cfi_directive=yes
2522 # no objdump, err on the side of caution
2523 gcc_cv_as_cfi_directive=no
2526 gcc_cv_as_cfi_directive=yes
2530 gcc_cv_as_cfi_directive=yes
2533 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2534 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2538 .cfi_adjust_cfa_offset 64
2540 .cfi_adjust_cfa_offset 128
2543 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2544 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2545 gcc_cv_as_cfi_advance_working=yes
2549 # no objdump, err on the side of caution
2550 gcc_cv_as_cfi_advance_working=no
2552 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2553 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2554 [`if test $gcc_cv_as_cfi_directive = yes \
2555 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2556 [Define 0/1 if your assembler supports CFI directives.])
2558 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2559 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2560 gcc_cv_as_cfi_personality_directive, ,,
2563 .cfi_personality 0, symbol
2565 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2566 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2567 then echo 1; else echo 0; fi`],
2568 [Define 0/1 if your assembler supports .cfi_personality.])
2570 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2571 gcc_cv_as_cfi_sections_directive, ,,
2573 .cfi_sections .debug_frame, .eh_frame
2577 win32 | pe | cygwin* | mingw32* | uwin*)
2578 # Need to check that we generated the correct relocation for the
2579 # .debug_frame section. This was fixed for binutils 2.21.
2580 gcc_cv_as_cfi_sections_directive=no
2581 if test "x$gcc_cv_objdump" != x; then
2582 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2583 grep secrel > /dev/null; then
2584 gcc_cv_as_cfi_sections_directive=yes
2589 gcc_cv_as_cfi_sections_directive=yes
2592 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2593 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2594 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2595 then echo 1; else echo 0; fi`],
2596 [Define 0/1 if your assembler supports .cfi_sections.])
2598 # GAS versions up to and including 2.11.0 may mis-optimize
2600 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2608 .section .eh_frame,"aw",@progbits
2610 .4byte .LECIE1-.LSCIE1
2624 .4byte .LEFDE1-.LASFDE1
2626 .4byte .LASFDE1-__FRAME_BEGIN__
2634 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2635 cat > conftest.lit <<EOF
2636 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2637 0010 01000000 12000000 18000000 00000000 ................
2638 0020 08000000 04080000 0044 .........D @&t@
2640 cat > conftest.big <<EOF
2641 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2642 0010 00000001 00000012 00000018 00000000 ................
2643 0020 00000008 04000000 0844 .........D @&t@
2645 # If the assembler didn't choke, and we can objdump,
2646 # and we got the correct data, then succeed.
2647 # The text in the here-document typically retains its unix-style line
2648 # endings, while the output of objdump will use host line endings.
2649 # Therefore, use diff -b for the comparisons.
2650 if test x$gcc_cv_objdump != x \
2651 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2652 | tail -3 > conftest.got \
2653 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2654 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2656 gcc_cv_as_eh_frame=yes
2657 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2658 gcc_cv_as_eh_frame=buggy
2660 # Uh oh, what do we do now?
2661 gcc_cv_as_eh_frame=no
2664 if test $gcc_cv_as_eh_frame = buggy; then
2665 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2666 [Define if your assembler mis-optimizes .eh_frame data.])
2669 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2670 [elf,2,12,0], [--fatal-warnings],
2671 [.section .rodata.str, "aMS", @progbits, 1])
2672 if test $gcc_cv_as_shf_merge = no; then
2673 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2674 [elf,2,12,0], [--fatal-warnings],
2675 [.section .rodata.str, "aMS", %progbits, 1])
2677 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2678 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2679 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2681 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2682 gcc_cv_as_comdat_group,
2683 [elf,2,16,0], [--fatal-warnings],
2684 [.section .text,"axG",@progbits,.foo,comdat])
2685 if test $gcc_cv_as_comdat_group = yes; then
2686 gcc_cv_as_comdat_group_percent=no
2687 gcc_cv_as_comdat_group_group=no
2689 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2690 gcc_cv_as_comdat_group_percent,
2691 [elf,2,16,0], [--fatal-warnings],
2692 [.section .text,"axG",%progbits,.foo,comdat])
2693 if test $gcc_cv_as_comdat_group_percent = yes; then
2694 gcc_cv_as_comdat_group_group=no
2696 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2697 gcc_cv_as_comdat_group_group=no
2700 # Sun as uses a completely different syntax.
2705 .group foo,".text%foo",#comdat
2706 .section ".text%foo", #alloc,#execinstr,#progbits
2711 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2713 .group foo,.text%foo,#comdat
2714 .section .text%foo, "ax", @progbits
2720 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2721 gcc_cv_as_comdat_group_group,
2727 if test x"$ld_is_gold" = xyes; then
2729 elif test $in_tree_ld = yes ; then
2731 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2732 && test $in_tree_ld_is_elf = yes; then
2735 elif echo "$ld_ver" | grep GNU > /dev/null; then
2737 if test 0"$ld_date" -lt 20050308; then
2738 if test -n "$ld_date"; then
2739 # If there was date string, but was earlier than 2005-03-08, fail
2741 elif test "$ld_vers_major" -lt 2; then
2743 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2750 *-*-solaris2.1[1-9]*)
2752 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2753 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2756 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2757 # least ld version 1.2267.
2758 if test "$ld_vers_major" -gt 1; then
2760 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2762 elif test "$ld_vers_minor" -ge 2267; then
2767 # Assume linkers other than GNU ld don't support COMDAT group.
2773 # Allow overriding the automatic COMDAT group tests above.
2774 AC_ARG_ENABLE(comdat,
2775 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2776 [comdat_group="$enable_comdat"])
2777 if test $comdat_group = no; then
2778 gcc_cv_as_comdat_group=no
2779 gcc_cv_as_comdat_group_percent=no
2780 gcc_cv_as_comdat_group_group=no
2782 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2783 [`if test $gcc_cv_as_comdat_group = yes \
2784 || test $gcc_cv_as_comdat_group_percent = yes \
2785 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2786 [Define 0/1 if your assembler and linker support COMDAT groups.])
2788 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2789 gcc_cv_as_discriminator,
2793 .loc 1 1 0 discriminator 1],,
2794 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2795 [Define if your assembler supports the .loc discriminator sub-directive.])])
2797 # Thread-local storage - the check is heavily parameterized.
2806 .section ".tdata","awT",@progbits
2809 ldq $27,__tls_get_addr($29) !literal!1
2810 lda $16,foo($29) !tlsgd!1
2811 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2812 ldq $27,__tls_get_addr($29) !literal!2
2813 lda $16,foo($29) !tlsldm!2
2814 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2815 ldq $1,foo($29) !gotdtprel
2816 ldah $2,foo($29) !dtprelhi
2817 lda $3,foo($2) !dtprello
2818 lda $4,foo($29) !dtprel
2819 ldq $1,foo($29) !gottprel
2820 ldah $2,foo($29) !tprelhi
2821 lda $3,foo($2) !tprello
2822 lda $4,foo($29) !tprel'
2825 tls_as_opt=--fatal-warnings
2827 cris-*-*|crisv32-*-*)
2829 .section ".tdata","awT",@progbits
2836 tls_as_opt=--fatal-warnings
2840 .section ".tdata","awT",@progbits
2852 .section ".tdata","awT",@progbits
2856 addil LT%foo-$tls_gdidx$,gp
2857 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2860 addil LT%foo-$tls_ldidx$,gp
2862 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2863 addil LR%foo-$tls_dtpoff$,%ret0
2864 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2866 addil LT%foo-$tls_ieoff$,gp
2867 ldw RT%foo-$tls_ieoff$(%r1),%t2
2870 addil LR%foo-$tls_leoff$,%t1
2871 ldo RR%foo-$tls_leoff$(%r1),%t2'
2874 tls_as_opt=--fatal-warnings
2878 .section ".tdata","awT",%progbits
2889 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2891 i[34567]86-*-solaris2.*)
2893 tga_func=___tls_get_addr
2895 x86_64-*-solaris2.1[0-9]*)
2897 tga_func=__tls_get_addr
2903 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2905 .section .tdata,"awt",@progbits'
2909 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2910 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2914 .section ".tdata","awT",@progbits'
2917 tls_as_opt="--fatal-warnings"
2919 conftest_s="$conftest_s
2923 leal foo@tlsgd(,%ebx,1), %eax
2924 leal foo@tlsldm(%ebx), %eax
2925 leal foo@dtpoff(%eax), %edx
2926 movl foo@gottpoff(%ebx), %eax
2927 subl foo@gottpoff(%ebx), %eax
2928 addl foo@gotntpoff(%ebx), %eax
2929 movl foo@indntpoff, %eax
2930 movl \$foo@tpoff, %eax
2931 subl \$foo@tpoff, %eax
2932 leal foo@ntpoff(%ecx), %eax"
2936 .section ".tdata","awT",@progbits
2940 leaq foo@TLSGD(%rip), %rdi
2941 leaq foo@TLSLD(%rip), %rdi
2942 leaq foo@DTPOFF(%rax), %rdx
2943 movq foo@GOTTPOFF(%rip), %rax
2944 movq $foo@TPOFF, %rax'
2947 tls_as_opt=--fatal-warnings
2951 .section ".tdata","awT",@progbits
2954 addl r16 = @ltoff(@dtpmod(foo#)), gp
2955 addl r17 = @ltoff(@dtprel(foo#)), gp
2956 addl r18 = @ltoff(@tprel(foo#)), gp
2957 addl r19 = @dtprel(foo#), gp
2958 adds r21 = @dtprel(foo#), r13
2959 movl r23 = @dtprel(foo#)
2960 addl r20 = @tprel(foo#), gp
2961 adds r22 = @tprel(foo#), r13
2962 movl r24 = @tprel(foo#)'
2965 tls_as_opt=--fatal-warnings
2969 .section .tdata,"awT",@progbits
2973 addiu $4, $28, %tlsgd(x)
2974 addiu $4, $28, %tlsldm(x)
2975 lui $4, %dtprel_hi(x)
2976 addiu $4, $4, %dtprel_lo(x)
2977 lw $4, %gottprel(x)($28)
2978 lui $4, %tprel_hi(x)
2979 addiu $4, $4, %tprel_lo(x)'
2982 tls_as_opt='-32 --fatal-warnings'
2986 .section .tdata,"awT",@progbits
2991 move.l x@TLSGD(%a5),%a0
2992 move.l x@TLSLDM(%a5),%a0
2993 move.l x@TLSLDO(%a5),%a0
2994 move.l x@TLSIE(%a5),%a0
2995 move.l x@TLSLE(%a5),%a0'
2998 tls_as_opt='--fatal-warnings'
3002 .section ".tdata","awT",%progbits
3006 add x0, x0, #:tlsgd_lo12:x
3011 tls_as_opt='--fatal-warnings'
3015 .section ".tdata","awT",@progbits
3023 addi 3,31,ld0@got@tlsgd
3025 addi 3,31,x1@got@tlsld
3028 addis 9,3,x2@dtprel@ha
3029 addi 9,9,x2@dtprel@l
3030 lwz 9,x3@got@tprel(31)
3033 addis 9,2,x2@tprel@ha
3034 addi 9,9,x2@tprel@l'
3037 tls_as_opt="-a32 --fatal-warnings"
3041 .section ".tdata","awT",@progbits
3049 addi 3,2,ld0@got@tlsgd
3055 addi 3,2,x1@got@tlsld
3061 addis 9,3,x2@dtprel@ha
3062 addi 9,9,x2@dtprel@l
3065 ld 9,x3@got@dtprel(2)
3071 tls_as_opt="-a64 --fatal-warnings"
3075 .section ".tdata","awT",@progbits
3084 l %r1,foo@GOTNTPOFF(%r12)
3085 l %r1,0(%r1):tls_load:foo
3086 bas %r14,0(%r1,%r13):tls_gdcall:foo
3087 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3090 tls_as_opt="-m31 --fatal-warnings"
3094 .section ".tdata","awT",@progbits
3102 lg %r1,foo@GOTNTPOFF(%r12)
3103 larl %r1,foo@INDNTPOFF
3104 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3105 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3108 tls_as_opt="-m64 -Aesame --fatal-warnings"
3110 sh-*-* | sh[34]-*-*)
3112 .section ".tdata","awT",@progbits
3122 tls_as_opt=--fatal-warnings
3126 sparc*-sun-solaris2.*)
3128 tga_func=__tls_get_addr
3134 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3136 .section ".tdata",#alloc,#write,#tls'
3141 .section ".tdata","awT",@progbits'
3144 tls_as_opt="-32 --fatal-warnings"
3146 conftest_s="$conftest_s
3149 sethi %tgd_hi22(foo), %o0
3150 add %o0, %tgd_lo10(foo), %o1
3151 add %l7, %o1, %o0, %tgd_add(foo)
3152 call __tls_get_addr, %tgd_call(foo)
3153 sethi %tldm_hi22(foo), %l1
3154 add %l1, %tldm_lo10(foo), %l2
3155 add %l7, %l2, %o0, %tldm_add(foo)
3156 call __tls_get_addr, %tldm_call(foo)
3157 sethi %tldo_hix22(foo), %l3
3158 xor %l3, %tldo_lox10(foo), %l4
3159 add %o0, %l4, %l5, %tldo_add(foo)
3160 sethi %tie_hi22(foo), %o3
3161 add %o3, %tie_lo10(foo), %o3
3162 ld [%l7 + %o3], %o2, %tie_ld(foo)
3163 add %g7, %o2, %o4, %tie_add(foo)
3164 sethi %tle_hix22(foo), %l1
3165 xor %l1, %tle_lox10(foo), %o5
3166 ld [%g7 + %o5], %o1"
3170 .section ".tdata","awT",@progbits
3173 addli r0, zero, tls_gd(foo)
3174 auli r0, zero, tls_gd_ha16(foo)
3175 addli r0, r0, tls_gd_lo16(foo)
3177 addli r0, zero, tls_ie(foo)
3178 auli r0, r0, tls_ie_ha16(foo)
3179 addli r0, r0, tls_ie_lo16(foo)'
3182 tls_as_opt="--fatal-warnings"
3186 .section ".tdata","awT",@progbits
3189 shl16insli r0, zero, hw0_last_tls_gd(foo)
3190 shl16insli r0, zero, hw1_last_tls_gd(foo)
3191 shl16insli r0, r0, hw0_tls_gd(foo)
3193 shl16insli r0, zero, hw1_last_tls_ie(foo)
3194 shl16insli r0, r0, hw0_tls_ie(foo)'
3197 tls_as_opt="--fatal-warnings"
3201 .section ".tdata","awT",@progbits
3204 movi a8, foo@TLSFUNC
3205 movi a10, foo@TLSARG
3206 callx8.tls a8, foo@TLSCALL'
3213 if test "x$enable_tls" = xno ; then
3214 : # TLS explicitly disabled.
3215 elif test "x$enable_tls" = xyes ; then
3216 set_have_as_tls=yes # TLS explicitly enabled.
3217 elif test -z "$tls_first_major"; then
3218 : # If we don't have a check, assume no support.
3220 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3221 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3222 [set_have_as_tls=yes])
3225 # TLS was introduced in the Solaris 9 FCS release. Support for GNU-style
3226 # TLS on x86 was only introduced in Solaris 9 4/04, replacing the earlier
3227 # Sun style that Sun ld and GCC don't support any longer.
3229 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3231 # Check ld and ld.so.1 TLS support.
3232 if echo "$ld_ver" | grep GNU > /dev/null; then
3233 # Assume all interesting versions of GNU ld have TLS support.
3234 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3238 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3240 min_tls_ld_vers_minor=374
3242 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3243 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3244 min_tls_ld_vers_minor=343
3247 if test "$ld_vers_major" -gt 1 || \
3248 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3254 AC_MSG_RESULT($ld_tls_support)
3257 save_LDFLAGS="$LDFLAGS"
3261 AC_MSG_CHECKING(library containing $tga_func)
3262 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3263 # (32-bit x86) only lived in libthread, so check for that. Keep
3264 # set_have_as_tls if found, disable if not.
3265 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3266 # Clear LIBS if we cannot support TLS.
3267 if test $set_have_as_tls = no; then
3270 # Always define LIB_TLS_SPEC, even without TLS support.
3271 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3272 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3273 AC_MSG_RESULT($LIBS)
3276 LDFLAGS="$save_LDFLAGS"
3279 if test $set_have_as_tls = yes ; then
3280 AC_DEFINE(HAVE_AS_TLS, 1,
3281 [Define if your assembler and linker support thread-local storage.])
3284 # Target-specific assembler checks.
3286 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3287 gcc_cv_ld_static_dynamic=no
3288 gcc_cv_ld_static_option='-Bstatic'
3289 gcc_cv_ld_dynamic_option='-Bdynamic'
3290 if test $in_tree_ld = yes ; then
3291 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3292 gcc_cv_ld_static_dynamic=yes
3294 elif test x$gcc_cv_ld != x; then
3295 # Check if linker supports -Bstatic/-Bdynamic option
3296 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3297 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3298 gcc_cv_ld_static_dynamic=yes
3301 # HP-UX ld uses -a flags to select between shared and archive.
3303 if test x"$gnu_ld" = xno; then
3304 gcc_cv_ld_static_dynamic=yes
3305 gcc_cv_ld_static_option="-aarchive_shared"
3306 gcc_cv_ld_dynamic_option="-adefault"
3309 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3311 gcc_cv_ld_static_dynamic=yes
3316 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3317 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3318 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3319 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3320 [Define to the linker option to disable use of shared objects.])
3321 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3322 [Define to the linker option to enable use of shared objects.])
3324 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3326 if test x"$demangler_in_ld" = xyes; then
3327 AC_MSG_CHECKING(linker --demangle support)
3328 gcc_cv_ld_demangle=no
3329 if test $in_tree_ld = yes; then
3330 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3331 gcc_cv_ld_demangle=yes
3333 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3334 # Check if the GNU linker supports --demangle option
3335 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3336 gcc_cv_ld_demangle=yes
3339 if test x"$gcc_cv_ld_demangle" = xyes; then
3340 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3341 [Define if your linker supports --demangle option.])
3343 AC_MSG_RESULT($gcc_cv_ld_demangle)
3346 AC_MSG_CHECKING(linker plugin support)
3348 if test -f liblto_plugin.la; then
3349 save_ld_ver="$ld_ver"
3350 save_ld_vers_major="$ld_vers_major"
3351 save_ld_vers_minor="$ld_vers_minor"
3352 save_ld_is_gold="$ld_is_gold"
3356 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3358 # FIXME: ld_is_gold?
3359 ld_vers_major="$gcc_cv_gld_major_version"
3360 ld_vers_minor="$gcc_cv_gld_minor_version"
3362 # Determine plugin linker version.
3363 # FIXME: Partial duplicate from above, generalize.
3365 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3366 if echo "$ld_ver" | grep GNU > /dev/null; then
3367 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3369 ld_vers=`echo $ld_ver | sed -n \
3370 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3372 ld_vers=`echo $ld_ver | sed -n \
3373 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3375 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3376 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3381 # Determine plugin support.
3382 if echo "$ld_ver" | grep GNU > /dev/null; then
3383 # Require GNU ld or gold 2.21+ for plugin support by default.
3384 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3386 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3387 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3392 ld_ver="$save_ld_ver"
3393 ld_vers_major="$save_ld_vers_major"
3394 ld_vers_minor="$save_ld_vers_minor"
3395 ld_is_gold="$save_ld_is_gold"
3397 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3398 [Define to the level of your linker's plugin support.])
3399 AC_MSG_RESULT($gcc_cv_lto_plugin)
3402 # All TARGET_ABI_OSF targets.
3403 alpha*-*-linux* | alpha*-*-*bsd*)
3404 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3405 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3408 extbl $3, $2, $3 !lituse_bytoff!1
3409 ldq $2, a($29) !literal!1
3410 ldq $4, b($29) !literal!2
3411 ldq_u $3, 0($2) !lituse_base!1
3412 ldq $27, f($29) !literal!5
3413 jsr $26, ($27), f !lituse_jsr!5
3414 ldah $29, 0($26) !gpdisp!3
3415 lda $0, c($29) !gprel
3416 ldah $1, d($29) !gprelhigh
3417 lda $1, d($1) !gprellow
3418 lda $29, 0($29) !gpdisp!3],,
3419 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3420 [Define if your assembler supports explicit relocations.])])
3421 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3422 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3425 ldq $27, a($29) !literal!1
3426 jsr $26, ($27), a !lituse_jsrdirect!1],,
3427 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3428 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3432 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3433 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3434 [-no-mul-bug-abort], [.text],,
3435 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3436 [Define if your assembler supports the -no-mul-bug-abort option.])])
3440 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3441 [.register %g2, #scratch],,
3442 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3443 [Define if your assembler supports .register.])])
3445 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3447 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3448 [Define if your assembler supports -relax option.])])
3450 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3451 gcc_cv_as_sparc_gotdata_op,,
3458 sethi %gdop_hix22(foo), %g1
3459 xor %g1, %gdop_lox10(foo), %g1
3460 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3461 [if test x$gcc_cv_ld != x \
3462 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3463 if test x$gcc_cv_objdump != x; then
3464 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3465 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3466 gcc_cv_as_sparc_gotdata_op=no
3468 gcc_cv_as_sparc_gotdata_op=yes
3473 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3474 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3476 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3477 gcc_cv_as_sparc_ua_pcrel,,
3485 .uaword %r_disp32(foo)],
3486 [if test x$gcc_cv_ld != x \
3487 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3488 gcc_cv_as_sparc_ua_pcrel=yes
3491 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3492 [Define if your assembler and linker support unaligned PC relative relocs.])
3494 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3495 gcc_cv_as_sparc_ua_pcrel_hidden,,
3500 .uaword %r_disp32(foo)
3501 .byte 0x32, 0x33, 0x34
3506 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3507 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3508 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3509 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3510 if $gcc_cv_objdump -R conftest 2> /dev/null \
3511 | grep 'DISP32' > /dev/null 2>&1; then
3514 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3518 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3519 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3520 ]) # unaligned pcrel relocs
3522 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3523 gcc_cv_as_sparc_offsetable_lo10,,
3526 or %g1, %lo(ab) + 12, %g1
3527 or %g1, %lo(ab + 12), %g1],
3528 [if test x$gcc_cv_objdump != x \
3529 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3530 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3531 gcc_cv_as_sparc_offsetable_lo10=yes
3533 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3534 [Define if your assembler supports offsetable %lo().])])
3536 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3537 gcc_cv_as_sparc_fmaf,,
3540 .register %g2, #scratch
3541 .register %g3, #scratch
3543 fmaddd %f0, %f2, %f4, %f6
3544 addxccc %g1, %g2, %g3
3545 fsrl32 %f2, %f4, %f8
3546 fnaddd %f10, %f12, %f14],,
3547 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3548 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3550 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3551 gcc_cv_as_sparc_sparc4,,
3554 .register %g2, #scratch
3555 .register %g3, #scratch
3558 1: cwbneg %g2, %g3, 1f
3561 aes_kexpand0 %f4, %f6, %f8
3562 des_round %f38, %f40, %f42, %f44
3563 camellia_f %f54, %f56, %f58, %f60
3564 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3565 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3566 [Define if your assembler supports SPARC4 instructions.])])
3570 i[34567]86-*-* | x86_64-*-*)
3574 # Full C++ conformance when using a shared libstdc++-v3 requires some
3575 # support from the Cygwin DLL, which in more recent versions exports
3576 # wrappers to aid in interposing and redirecting operators new, delete,
3577 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3578 # are configuring for a version of Cygwin that exports the wrappers.
3579 if test x$host = x$target; then
3580 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3582 # Can't check presence of libc functions during cross-compile, so
3583 # we just have to assume we're building for an up-to-date target.
3584 gcc_ac_cygwin_dll_wrappers=yes
3586 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3587 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3588 [Define if you want to generate code by default that assumes that the
3589 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3592 cygwin* | pe | mingw32* | interix*)
3593 # Recent binutils allows the three-operand form of ".comm" on PE. This
3594 # definition is used unconditionally to initialise the default state of
3595 # the target option variable that governs usage of the feature.
3596 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3597 [2,19,52],,[.comm foo,1,32])
3598 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3599 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3600 [Define if your assembler supports specifying the alignment
3601 of objects allocated using the GAS .comm command.])
3602 # Used for DWARF 2 in PE
3603 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3604 gcc_cv_as_ix86_pe_secrel32,
3610 [if test x$gcc_cv_ld != x \
3611 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3612 gcc_cv_as_ix86_pe_secrel32=yes
3615 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3616 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3617 # Test if the assembler supports the extended form of the .section
3618 # directive that specifies section alignment. LTO support uses this,
3619 # but normally only after installation, so we warn but don't fail the
3620 # configure if LTO is enabled but the assembler does not support it.
3621 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3622 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3623 if test x$gcc_cv_as_section_has_align != xyes; then
3624 case ",$enable_languages," in
3626 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3630 # Test if the assembler supports the section flag 'e' for specifying
3631 # an excluded section.
3632 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3636 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3637 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3638 [Define if your assembler supports specifying the section flag e.])
3642 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3643 gcc_cv_as_ix86_filds,,,
3644 [filds mem; fists mem],,
3645 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3646 [Define if your assembler uses filds and fists mnemonics.])])
3648 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3649 gcc_cv_as_ix86_fildq,,,
3650 [fildq mem; fistpq mem],,
3651 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3652 [Define if your assembler uses fildq and fistq mnemonics.])])
3654 gcc_GAS_CHECK_FEATURE([cmov syntax],
3655 gcc_cv_as_ix86_cmov_sun_syntax,,,
3656 [cmovl.l %edx, %eax],,
3657 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3658 [Define if your assembler supports the Sun syntax for cmov.])])
3660 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3661 gcc_cv_as_ix86_ffreep,,,
3663 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3664 [Define if your assembler supports the ffreep mnemonic.])])
3666 gcc_GAS_CHECK_FEATURE([.quad directive],
3667 gcc_cv_as_ix86_quad,,,
3669 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3670 [Define if your assembler supports the .quad directive.])])
3672 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3673 gcc_cv_as_ix86_sahf,,,
3676 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3677 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3679 gcc_GAS_CHECK_FEATURE([hle prefixes],
3680 gcc_cv_as_ix86_hle,,,
3681 [lock xacquire cmpxchg %esi, (%ecx)],,
3682 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3683 [Define if your assembler supports HLE prefixes.])])
3685 gcc_GAS_CHECK_FEATURE([swap suffix],
3686 gcc_cv_as_ix86_swap,,,
3687 [movl.s %esp, %ebp],,
3688 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3689 [Define if your assembler supports the swap suffix.])])
3691 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3692 gcc_cv_as_ix86_diff_sect_delta,,,
3700 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3701 [Define if your assembler supports the subtraction of symbols in different sections.])])
3703 # These two are used unconditionally by i386.[ch]; it is to be defined
3704 # to 1 if the feature is present, 0 otherwise.
3705 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3706 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3712 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3713 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3714 [Define true if the assembler supports '.long foo@GOTOFF'.])
3716 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3717 gcc_cv_as_ix86_rep_lock_prefix,,,
3723 lock addl %edi, (%eax,%esi)
3724 lock orl $0, (%esp)],,
3725 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3726 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3728 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3729 gcc_cv_as_ix86_tlsgdplt,,,
3730 [call tls_gd@tlsgdplt],
3731 [if test x$gcc_cv_ld != x \
3732 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3733 gcc_cv_as_ix86_tlsgdplt=yes
3736 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3737 [Define if your assembler and linker support @tlsgdplt.])])
3739 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3740 gcc_cv_as_ix86_tlsldmplt,,,
3742 call tls_ld@tlsldmplt],
3743 [if test x$gcc_cv_ld != x \
3744 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3745 gcc_cv_as_ix86_tlsldmplt=yes
3748 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3749 [Define if your assembler and linker support @tlsldmplt.])])
3754 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3755 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3757 addl r15 = @ltoffx(x#), gp
3759 ld8.mov r16 = [[r15]], x#],,
3760 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3761 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3767 *-*-aix*) conftest_s=' .machine "pwr5"
3771 gcc_GAS_CHECK_FEATURE([.machine directive support],
3772 gcc_cv_as_machine_directive,,,
3773 [ .machine ppc7400])
3774 if test x$gcc_cv_as_machine_directive != xyes; then
3775 echo "*** This target requires an assembler supporting \".machine\"" >&2
3776 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3777 test x$build = x$target && exit 1
3781 *) conftest_s=' .machine power4
3786 gcc_GAS_CHECK_FEATURE([mfcr field support],
3787 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3789 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3790 [Define if your assembler supports mfcr field.])])
3793 *-*-aix*) conftest_s=' .machine "pwr5"
3796 *) conftest_s=' .machine power5
3801 gcc_GAS_CHECK_FEATURE([popcntb support],
3802 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3804 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3805 [Define if your assembler supports popcntb field.])])
3808 *-*-aix*) conftest_s=' .machine "pwr5x"
3811 *) conftest_s=' .machine power5
3816 gcc_GAS_CHECK_FEATURE([fp round support],
3817 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3819 [AC_DEFINE(HAVE_AS_FPRND, 1,
3820 [Define if your assembler supports fprnd.])])
3823 *-*-aix*) conftest_s=' .machine "pwr6"
3826 *) conftest_s=' .machine power6
3831 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3832 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3834 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3835 [Define if your assembler supports mffgpr and mftgpr.])])
3838 *-*-aix*) conftest_s=' .csect .text[[PR]]
3840 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3844 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3845 *) conftest_s=' .text
3847 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3850 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3851 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3853 [AC_DEFINE(HAVE_AS_REL16, 1,
3854 [Define if your assembler supports R_PPC_REL16 relocs.])])
3857 *-*-aix*) conftest_s=' .machine "pwr6"
3860 *) conftest_s=' .machine power6
3865 gcc_GAS_CHECK_FEATURE([compare bytes support],
3866 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3868 [AC_DEFINE(HAVE_AS_CMPB, 1,
3869 [Define if your assembler supports cmpb.])])
3872 *-*-aix*) conftest_s=' .machine "pwr6"
3875 *) conftest_s=' .machine power6
3880 gcc_GAS_CHECK_FEATURE([decimal float support],
3881 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3883 [AC_DEFINE(HAVE_AS_DFP, 1,
3884 [Define if your assembler supports DFP instructions.])])
3887 *-*-aix*) conftest_s=' .machine "pwr7"
3890 *) conftest_s=' .machine power7
3895 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3896 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3898 [AC_DEFINE(HAVE_AS_VSX, 1,
3899 [Define if your assembler supports VSX instructions.])])
3902 *-*-aix*) conftest_s=' .machine "pwr7"
3905 *) conftest_s=' .machine power7
3910 gcc_GAS_CHECK_FEATURE([popcntd support],
3911 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3913 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3914 [Define if your assembler supports POPCNTD instructions.])])
3917 *-*-aix*) conftest_s=' .machine "pwr8"
3918 .csect .text[[PR]]';;
3919 *) conftest_s=' .machine power8
3923 gcc_GAS_CHECK_FEATURE([power8 support],
3924 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
3926 [AC_DEFINE(HAVE_AS_POWER8, 1,
3927 [Define if your assembler supports POWER8 instructions.])])
3930 *-*-aix*) conftest_s=' .csect .text[[PR]]
3932 *) conftest_s=' .text
3936 gcc_GAS_CHECK_FEATURE([lwsync support],
3937 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3939 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3940 [Define if your assembler supports LWSYNC instructions.])])
3943 *-*-aix*) conftest_s=' .machine "476"
3946 *) conftest_s=' .machine "476"
3951 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3952 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3954 [AC_DEFINE(HAVE_AS_DCI, 1,
3955 [Define if your assembler supports the DCI/ICI instructions.])])
3957 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3958 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3959 [.gnu_attribute 4,1],,
3960 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3961 [Define if your assembler supports .gnu_attribute.])])
3963 gcc_GAS_CHECK_FEATURE([tls marker support],
3964 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3965 [ bl __tls_get_addr(x@tlsgd)],,
3966 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3967 [Define if your assembler supports arg info for __tls_get_addr.])])
3971 gcc_GAS_CHECK_FEATURE([.ref support],
3972 gcc_cv_as_aix_ref, [2,21,0],,
3973 [ .csect stuff[[rw]]
3979 [AC_DEFINE(HAVE_AS_REF, 1,
3980 [Define if your assembler supports .ref])])
3986 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3987 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3988 [ lw $4,%gp_rel(foo)($4)],,
3989 [if test x$target_cpu_default = x
3990 then target_cpu_default=MASK_EXPLICIT_RELOCS
3991 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3993 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3994 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3995 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3996 [Define if the assembler understands -mno-shared.])])
3998 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3999 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4000 [.gnu_attribute 4,1],,
4001 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4002 [Define if your assembler supports .gnu_attribute.])])
4004 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4005 gcc_cv_as_mips_dtprelword, [2,18,0],,
4006 [.section .tdata,"awT",@progbits
4010 .dtprelword x+0x8000],,
4011 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4012 [Define if your assembler supports .dtprelword.])])
4014 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4015 gcc_cv_as_mips_dspr1_mult,,,
4025 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4026 [Define if your assembler supports DSPR1 mult.])])
4028 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4029 gcc_cv_as_ld_jalr_reloc=no
4030 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4031 if test $in_tree_ld = yes ; then
4032 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4033 && test $in_tree_ld_is_elf = yes; then
4034 gcc_cv_as_ld_jalr_reloc=yes
4036 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4037 echo ' .ent x' > conftest.s
4038 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
4039 echo ' ld $25,%call16(y)($28)' >> conftest.s
4040 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4041 echo '1: jalr $25' >> conftest.s
4042 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4043 echo '1: jalr $25' >> conftest.s
4044 echo ' .end x' >> conftest.s
4045 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4046 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4047 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4048 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4049 gcc_cv_as_ld_jalr_reloc=yes
4055 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4056 if test x$target_cpu_default = x; then
4057 target_cpu_default=MASK_RELAX_PIC_CALLS
4059 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4062 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4064 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4065 [gcc_cv_ld_mips_personality_relaxation],
4066 [gcc_cv_ld_mips_personality_relaxation=no
4067 if test $in_tree_ld = yes ; then
4068 if test "$gcc_cv_gld_major_version" -eq 2 \
4069 -a "$gcc_cv_gld_minor_version" -ge 21 \
4070 -o "$gcc_cv_gld_major_version" -gt 2; then
4071 gcc_cv_ld_mips_personality_relaxation=yes
4073 elif test x$gcc_cv_as != x \
4074 -a x$gcc_cv_ld != x \
4075 -a x$gcc_cv_readelf != x ; then
4076 cat > conftest.s <<EOF
4078 .cfi_personality 0x80,indirect_ptr
4085 .section .data,"aw",@progbits
4089 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4090 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4091 if $gcc_cv_readelf -d conftest 2>&1 \
4092 | grep TEXTREL > /dev/null 2>&1; then
4094 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4095 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4098 gcc_cv_ld_mips_personality_relaxation=yes
4102 rm -f conftest.s conftest.o conftest])
4103 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4104 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4105 [Define if your linker can relax absolute .eh_frame personality
4106 pointers into PC-relative form.])
4111 # Mips and HP-UX need the GNU assembler.
4112 # Linux on IA64 might be able to use the Intel assembler.
4115 mips*-*-* | *-*-hpux* )
4116 if test x$gas_flag = xyes \
4117 || test x"$host" != x"$build" \
4118 || test ! -x "$gcc_cv_as" \
4119 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4122 echo "*** This configuration requires the GNU assembler" >&2
4128 # ??? Not all targets support dwarf2 debug_line, even within a version
4129 # of gas. Moreover, we need to emit a valid instruction to trigger any
4130 # info to the output file. So, as supported targets are added to gas 2.11,
4131 # add some instruction here to (also) show we expect this might work.
4132 # ??? Once 2.11 is released, probably need to add first known working
4133 # version to the per-target configury.
4135 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4136 | pa | rs6000 | score | sparc | spu | tilegx | tilepro | xstormy16 | xtensa)
4146 if test x"$insn" != x; then
4148 .file 1 \"conftest.s\"
4151 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4152 gcc_cv_as_dwarf2_debug_line,
4153 [elf,2,11,0],, [$conftest_s],
4154 [if test x$gcc_cv_objdump != x \
4155 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4156 | grep debug_line > /dev/null 2>&1; then
4157 gcc_cv_as_dwarf2_debug_line=yes
4160 # The .debug_line file table must be in the exact order that
4161 # we specified the files, since these indices are also used
4162 # by DW_AT_decl_file. Approximate this test by testing if
4163 # the assembler bitches if the same index is assigned twice.
4164 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4165 gcc_cv_as_dwarf2_file_buggy,,,
4169 if test $gcc_cv_as_dwarf2_debug_line = yes \
4170 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4171 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4172 [Define if your assembler supports dwarf2 .file/.loc directives,
4173 and preserves file table indices exactly as given.])
4176 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4177 gcc_cv_as_gdwarf2_flag,
4178 [elf,2,11,0], [--gdwarf2], [$insn],,
4179 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4180 [Define if your assembler supports the --gdwarf2 option.])])
4182 gcc_GAS_CHECK_FEATURE([--gstabs option],
4183 gcc_cv_as_gstabs_flag,
4184 [elf,2,11,0], [--gstabs], [$insn],
4185 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4186 # and warns about it, but still exits successfully. So check for
4188 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4190 else gcc_cv_as_gstabs_flag=yes
4192 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4193 [Define if your assembler supports the --gstabs option.])])
4195 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4196 gcc_cv_as_debug_prefix_map_flag,
4197 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4198 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4199 [Define if your assembler supports the --debug-prefix-map option.])])
4202 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4205 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4206 [Define if your assembler supports .lcomm with an alignment field.])])
4208 AC_ARG_ENABLE(gnu-unique-object,
4209 [AS_HELP_STRING([--enable-gnu-unique-object],
4210 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4211 [case $enable_gnu_unique_object in
4213 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4214 Valid choices are 'yes' and 'no'.]) ;;
4216 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4218 [.type foo, '$target_type_format_char'gnu_unique_object],,
4219 # We need to unquote above to to use the definition from config.gcc.
4220 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4221 [[if test x$host = x$build -a x$host = x$target &&
4222 ldd --version 2>/dev/null &&
4223 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4224 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4225 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4226 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4227 if test "$glibcnum" -ge 2011 ; then
4228 enable_gnu_unique_object=yes
4231 if test x$enable_gnu_unique_object = xyes; then
4232 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4233 [Define if your assembler supports @gnu_unique_object.])
4236 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4237 [gcc_cv_as_line_zero],
4238 [gcc_cv_as_line_zero=no
4239 if test $in_tree_gas = yes; then
4240 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4241 elif test "x$gcc_cv_as" != x; then
4242 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4243 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4244 test "x`cat conftest.out`" = x
4246 gcc_cv_as_line_zero=yes
4248 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4249 cat conftest.s >&AS_MESSAGE_LOG_FD
4250 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4251 cat conftest.out >&AS_MESSAGE_LOG_FD
4253 rm -f conftest.o conftest.s conftest.out
4255 if test "x$gcc_cv_as_line_zero" = xyes; then
4256 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4257 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4260 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4261 gcc_cv_ld_eh_frame_hdr=no
4262 if test $in_tree_ld = yes ; then
4263 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4264 && test $in_tree_ld_is_elf = yes; then
4265 gcc_cv_ld_eh_frame_hdr=yes
4267 elif test x$gcc_cv_ld != x; then
4268 if echo "$ld_ver" | grep GNU > /dev/null; then
4269 # Check if linker supports --eh-frame-hdr option
4270 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4271 gcc_cv_ld_eh_frame_hdr=yes
4276 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4277 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4278 gcc_cv_ld_eh_frame_hdr=yes
4284 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4285 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4286 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4287 [Define if your linker supports .eh_frame_hdr.])
4289 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4291 AC_MSG_CHECKING(linker position independent executable support)
4293 if test $in_tree_ld = yes ; then
4294 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4295 && test $in_tree_ld_is_elf = yes; then
4298 elif test x$gcc_cv_ld != x; then
4299 # Check if linker supports -pie option
4300 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4304 if test x"$gcc_cv_ld_pie" = xyes; then
4305 AC_DEFINE(HAVE_LD_PIE, 1,
4306 [Define if your linker supports -pie option.])
4308 AC_MSG_RESULT($gcc_cv_ld_pie)
4310 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4311 gcc_cv_ld_eh_gc_sections=no
4312 if test $in_tree_ld = yes ; then
4313 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4314 && test $in_tree_ld_is_elf = yes; then
4315 gcc_cv_ld_eh_gc_sections=yes
4317 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4318 cat > conftest.s <<EOF
4321 .type _start, @function
4324 .size _start, .-_start
4325 .section .text.foo,"ax",@progbits
4326 .type foo, @function
4330 .section .gcc_except_table.foo,"a",@progbits
4333 .section .eh_frame,"a",@progbits
4336 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4337 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4338 | grep "gc-sections option ignored" > /dev/null; then
4339 gcc_cv_ld_eh_gc_sections=no
4340 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4341 | grep gcc_except_table > /dev/null; then
4342 gcc_cv_ld_eh_gc_sections=yes
4343 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4344 if test x$gcc_cv_as_comdat_group != xyes; then
4345 gcc_cv_ld_eh_gc_sections=no
4346 cat > conftest.s <<EOF
4349 .type _start, @function
4352 .size _start, .-_start
4353 .section .gnu.linkonce.t.foo,"ax",@progbits
4354 .type foo, @function
4358 .section .gcc_except_table.foo,"a",@progbits
4361 .section .eh_frame,"a",@progbits
4364 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4365 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4366 | grep "gc-sections option ignored" > /dev/null; then
4367 gcc_cv_ld_eh_gc_sections=no
4368 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4369 | grep gcc_except_table > /dev/null; then
4370 gcc_cv_ld_eh_gc_sections=yes
4376 rm -f conftest.s conftest.o conftest
4380 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4381 gcc_cv_ld_eh_gc_sections=no
4384 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4385 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4386 [Define if your linker supports garbage collection of
4387 sections in presence of EH frames.])
4389 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4391 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4392 gcc_cv_ld_eh_gc_sections_bug=no
4393 if test $in_tree_ld = yes ; then
4394 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4395 && test $in_tree_ld_is_elf = yes; then
4396 gcc_cv_ld_eh_gc_sections_bug=yes
4398 elif test x$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
4399 gcc_cv_ld_eh_gc_sections_bug=yes
4400 cat > conftest.s <<EOF
4403 .type _start, @function
4406 .size _start, .-_start
4407 .section .text.startup.foo,"ax",@progbits
4408 .type foo, @function
4412 .section .gcc_except_table.foo,"a",@progbits
4415 .section .eh_frame,"a",@progbits
4418 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4419 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4420 | grep "gc-sections option ignored" > /dev/null; then
4422 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4423 | grep gcc_except_table > /dev/null; then
4424 gcc_cv_ld_eh_gc_sections_bug=no
4427 rm -f conftest.s conftest.o conftest
4429 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4430 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4431 [Define if your linker has buggy garbage collection of
4432 sections support when .text.startup.foo like sections are used.])
4434 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4440 AC_CACHE_CHECK(linker --as-needed support,
4441 gcc_cv_ld_as_needed,
4442 [gcc_cv_ld_as_needed=no
4443 if test $in_tree_ld = yes ; then
4444 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4445 && test $in_tree_ld_is_elf = yes; then
4446 gcc_cv_ld_as_needed=yes
4448 elif test x$gcc_cv_ld != x; then
4449 # Check if linker supports --as-needed and --no-as-needed options
4450 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4451 gcc_cv_ld_as_needed=yes
4455 if test x"$gcc_cv_ld_as_needed" = xyes; then
4456 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4457 [Define if your linker supports --as-needed and --no-as-needed options.])
4460 case "$target:$tm_file" in
4461 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4464 emul_name="-melf64ppc"
4467 emul_name="-melf64ppc_fbsd"
4470 AC_CACHE_CHECK(linker support for omitting dot symbols,
4471 gcc_cv_ld_no_dot_syms,
4472 [gcc_cv_ld_no_dot_syms=no
4473 if test x"$ld_is_gold" = xyes; then
4474 gcc_cv_ld_no_dot_syms=yes
4475 elif 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; then
4477 gcc_cv_ld_no_dot_syms=yes
4479 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4480 cat > conftest1.s <<EOF
4484 cat > conftest2.s <<EOF
4485 .section ".opd","aw"
4490 .quad .LEfoo,.TOC.@tocbase,0
4496 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4497 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4498 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4499 gcc_cv_ld_no_dot_syms=yes
4501 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4504 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4505 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4506 [Define if your PowerPC64 linker only needs function descriptor syms.])
4509 AC_CACHE_CHECK(linker large toc support,
4510 gcc_cv_ld_large_toc,
4511 [gcc_cv_ld_large_toc=no
4512 if test x"$ld_is_gold" = xyes; then
4513 gcc_cv_ld_large_toc=yes
4514 elif test $in_tree_ld = yes ; then
4515 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4516 gcc_cv_ld_large_toc=yes
4518 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4519 cat > conftest.s <<EOF
4520 .section ".tbss","awT",@nobits
4526 addis 9,13,ie0@got@tprel@ha
4527 ld 9,ie0@got@tprel@l(9)
4529 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4530 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4531 gcc_cv_ld_large_toc=yes
4533 rm -f conftest conftest.o conftest.s
4536 if test x"$gcc_cv_ld_large_toc" = xyes; then
4537 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4538 [Define if your PowerPC64 linker supports a large TOC.])
4545 AC_CACHE_CHECK(linker large toc support,
4546 gcc_cv_ld_large_toc,
4547 [gcc_cv_ld_large_toc=no
4548 if test x$gcc_cv_as != x ; then
4549 cat > conftest.s <<EOF
4559 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
4560 gcc_cv_ld_large_toc=yes
4562 rm -f conftest conftest.o conftest.s
4565 if test x"$gcc_cv_ld_large_toc" = xyes; then
4566 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4567 [Define if your AIX linker supports a large TOC.])
4572 AC_CACHE_CHECK(linker --build-id support,
4574 [gcc_cv_ld_buildid=no
4575 if test $in_tree_ld = yes ; then
4576 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4577 "$gcc_cv_gld_minor_version" -ge 18 -o \
4578 "$gcc_cv_gld_major_version" -gt 2 \
4579 && test $in_tree_ld_is_elf = yes; then
4580 gcc_cv_ld_buildid=yes
4582 elif test x$gcc_cv_ld != x; then
4583 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4584 gcc_cv_ld_buildid=yes
4587 if test x"$gcc_cv_ld_buildid" = xyes; then
4588 AC_DEFINE(HAVE_LD_BUILDID, 1,
4589 [Define if your linker supports --build-id.])
4592 AC_ARG_ENABLE(linker-build-id,
4593 [AS_HELP_STRING([--enable-linker-build-id],
4594 [compiler will always pass --build-id to linker])],
4596 enable_linker_build_id=no)
4598 if test x"$enable_linker_build_id" = xyes; then
4599 if test x"$gcc_cv_ld_buildid" = xyes; then
4600 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4601 [Define if gcc should always pass --build-id to linker.])
4603 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4607 # In binutils 2.21, GNU ld gained support for new emulations fully
4608 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4609 AC_CACHE_CHECK(linker *_sol2 emulation support,
4610 gcc_cv_ld_sol2_emulation,
4611 [gcc_cv_ld_sol2_emulation=no
4612 if test $in_tree_ld = yes ; then
4613 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4614 "$gcc_cv_gld_minor_version" -ge 21 -o \
4615 "$gcc_cv_gld_major_version" -gt 2 \
4616 && test $in_tree_ld_is_elf = yes; then
4617 gcc_cv_ld_sol2_emulation=yes
4619 elif test x$gcc_cv_ld != x; then
4620 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4621 grep _sol2 > /dev/null; then
4622 gcc_cv_ld_sol2_emulation=yes
4625 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4626 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4627 [Define if your linker supports the *_sol2 emulations.])
4630 AC_CACHE_CHECK(linker --sysroot support,
4632 [gcc_cv_ld_sysroot=no
4633 if test $in_tree_ld = yes ; then
4634 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4635 gcc_cv_ld_sysroot=yes
4637 elif test x$gcc_cv_ld != x; then
4638 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4639 gcc_cv_ld_sysroot=yes
4642 if test x"$gcc_cv_ld_sysroot" = xyes; then
4643 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4644 [Define if your linker supports --sysroot.])
4647 if test x$with_sysroot = x && test x$host = x$target \
4648 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4649 && test "$prefix" != "NONE"; then
4650 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4651 [Define to PREFIX/include if cpp should also search that directory.])
4654 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4655 if test "x$with_headers" != x; then
4656 target_header_dir=$with_headers
4657 elif test "x$with_sysroot" = x; then
4658 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
4659 elif test "x$with_build_sysroot" != "x"; then
4660 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4661 elif test "x$with_sysroot" = xyes; then
4662 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4664 target_header_dir="${with_sysroot}${native_system_header_dir}"
4667 target_header_dir=${native_system_header_dir}
4670 # Test for stack protector support in target C library.
4671 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4672 gcc_cv_libc_provides_ssp,
4673 [gcc_cv_libc_provides_ssp=no
4675 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4676 [# glibc 2.4 and later provides __stack_chk_fail and
4677 # either __stack_chk_guard, or TLS access to stack guard canary.
4678 if test -f $target_header_dir/features.h \
4679 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4680 $target_header_dir/features.h > /dev/null; then
4681 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4682 $target_header_dir/features.h > /dev/null; then
4683 gcc_cv_libc_provides_ssp=yes
4684 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4685 $target_header_dir/features.h > /dev/null \
4686 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4687 $target_header_dir/features.h > /dev/null; then
4688 gcc_cv_libc_provides_ssp=yes
4689 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4690 $target_header_dir/features.h > /dev/null && \
4691 test -f $target_header_dir/bits/uClibc_config.h && \
4692 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4693 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4694 gcc_cv_libc_provides_ssp=yes
4696 # all versions of Bionic support stack protector
4697 elif test -f $target_header_dir/sys/cdefs.h \
4698 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
4699 $target_header_dir/sys/cdefs.h > /dev/null; then
4700 gcc_cv_libc_provides_ssp=yes
4704 # Avoid complicated tests (see
4705 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4706 # simply assert that glibc does provide this, which is true for all
4707 # realistically usable GNU/Hurd configurations.
4708 gcc_cv_libc_provides_ssp=yes;;
4709 *-*-darwin* | *-*-freebsd*)
4710 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4711 [echo "no __stack_chk_fail on this target"])
4713 *) gcc_cv_libc_provides_ssp=no ;;
4716 if test x$gcc_cv_libc_provides_ssp = xyes; then
4717 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4718 [Define if your target C library provides stack protector support])
4721 # Test for <sys/sdt.h> on the target.
4722 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4723 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4725 if test -f $target_header_dir/sys/sdt.h; then
4727 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4728 [Define if your target C library provides sys/sdt.h])
4730 AC_MSG_RESULT($have_sys_sdt_h)
4732 # Check if TFmode long double should be used by default or not.
4733 # Some glibc targets used DFmode long double, but with glibc 2.4
4734 # and later they can use TFmode.
4736 powerpc*-*-linux* | \
4740 AC_ARG_WITH(long-double-128,
4741 [AS_HELP_STRING([--with-long-double-128],
4742 [use 128-bit long double by default])],
4743 gcc_cv_target_ldbl128="$with_long_double_128",
4744 [[gcc_cv_target_ldbl128=no
4745 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4746 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4747 && gcc_cv_target_ldbl128=yes
4751 if test x$gcc_cv_target_ldbl128 = xyes; then
4752 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4753 [Define if TFmode long double should be the default])
4756 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4757 gcc_cv_target_dl_iterate_phdr=unknown
4759 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
4760 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
4761 # libdl there, both complicating its use and breaking compatibility
4762 # between Solaris 10 updates.
4763 *-*-solaris2.1[[1-9]]*)
4764 # <link.h> needs both a dl_iterate_phdr declaration and support for
4765 # compilation with largefile support.
4766 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4767 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4768 gcc_cv_target_dl_iterate_phdr=yes
4770 gcc_cv_target_dl_iterate_phdr=no
4774 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4775 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4776 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4777 [Define if your target C library provides the `dl_iterate_phdr' function.])
4779 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4781 # Find out what GC implementation we want, or may, use.
4783 [AS_HELP_STRING([--with-gc={page,zone}],
4784 [choose the garbage collection mechanism to use
4785 with the compiler])],
4792 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4795 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4800 echo "Using $GGC for garbage collection."
4802 # Libraries to use on the host. This will normally be set by the top
4803 # level Makefile. Here we simply capture the value for our Makefile.
4804 if test -z "${HOST_LIBS+set}"; then
4809 # Use the system's zlib library.
4811 zlibinc="-I\$(srcdir)/../zlib"
4812 AC_ARG_WITH(system-zlib,
4813 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4820 dnl Very limited version of automake's enable-maintainer-mode
4822 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4823 dnl maintainer-mode is disabled by default
4824 AC_ARG_ENABLE(maintainer-mode,
4825 [AS_HELP_STRING([--enable-maintainer-mode],
4826 [enable make rules and dependencies not useful
4827 (and sometimes confusing) to the casual installer])],
4828 maintainer_mode=$enableval,
4831 AC_MSG_RESULT($maintainer_mode)
4833 if test "$maintainer_mode" = "yes"; then
4844 # Make empty files to contain the specs and options for each language.
4845 # Then add #include lines to for a compiler that has specs and/or options.
4851 # These (without "all_") are set in each config-lang.in.
4852 # `language' must be a single word so is spelled singularly.
4855 all_outputs='Makefile'
4856 # List of language makefile fragments.
4858 # Additional files for gengtype
4859 all_gtfiles="$target_gtfiles"
4861 # These are the languages that are set in --enable-languages,
4862 # and are available in the GCC tree.
4863 all_selected_languages=
4865 # Add the language fragments.
4866 # Languages are added via two mechanisms. Some information must be
4867 # recorded in makefile variables, these are defined in config-lang.in.
4868 # We accumulate them and plug them into the main Makefile.
4869 # The other mechanism is a set of hooks for each of the main targets
4870 # like `clean', `install', etc.
4872 language_hooks="Make-hooks"
4874 for lang in ${srcdir}/*/config-lang.in
4877 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4879 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4880 if test "x$lang_alias" = x
4882 echo "$lang doesn't set \$language." 1>&2
4885 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4886 subdirs="$subdirs $subdir"
4888 # $gcc_subdir is where the gcc integration files are to be found
4889 # for a language, both for internal compiler purposes (compiler
4890 # sources implementing front-end to GCC tree converters), and for
4891 # build infrastructure purposes (Make-lang.in, etc.)
4893 # This will be <subdir> (relative to $srcdir) if a line like
4894 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4895 # is found in <langdir>/config-lang.in, and will remain <langdir>
4898 # Except for the language alias (fetched above), the regular
4899 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4900 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4901 # only this and the language alias.
4903 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4904 if [ "$gcc_subdir" = "" ]; then
4905 gcc_subdir="$subdir"
4908 case ",$enable_languages," in
4910 all_selected_languages="$all_selected_languages $lang_alias"
4911 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4912 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4924 . ${srcdir}/$gcc_subdir/config-lang.in
4925 if test "x$language" = x
4927 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4932 case ",$enable_languages," in
4935 for i in $subdir_requires; do
4936 test -f "${srcdir}/$i/config-lang.in" && continue
4944 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4945 if test -f $srcdir/$gcc_subdir/lang.opt; then
4946 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4947 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4949 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4950 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4952 all_languages="$all_languages $language"
4953 all_compilers="$all_compilers $compilers"
4954 all_outputs="$all_outputs $outputs"
4955 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4956 case ",$enable_languages," in
4958 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4960 AC_SUBST(enable_lto)
4967 for language in $all_selected_languages
4969 check_languages="$check_languages check-$language"
4972 # We link each language in with a set of hooks, reached indirectly via
4973 # lang.${target}. Only do so for selected languages.
4977 target_list="all.cross start.encap rest.encap tags \
4978 install-common install-man install-info install-pdf install-html dvi \
4979 pdf html uninstall info man srcextra srcman srcinfo \
4980 mostlyclean clean distclean maintainer-clean install-plugin"
4982 for t in $target_list
4985 for lang in $all_selected_languages
4989 echo "lang.$t: $x" >> Make-hooks
4993 # Option include files
4996 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4997 option_includes="option-includes.mk"
4998 AC_SUBST_FILE(option_includes)
5006 echo "dir ." > .gdbinit
5007 echo "dir ${srcdir}" >> .gdbinit
5008 if test x$gdb_needs_out_file_path = xyes
5010 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5012 if test "x$subdirs" != x; then
5015 echo "dir ${srcdir}/$s" >> .gdbinit
5018 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5020 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5021 AC_SUBST(gcc_tooldir)
5024 # Find a directory in which to install a shared libgcc.
5026 AC_ARG_ENABLE(version-specific-runtime-libs,
5027 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5028 [specify that runtime libraries should be
5029 installed in a compiler-specific directory])])
5031 # Substitute configuration variables
5034 AC_SUBST(all_compilers)
5035 AC_SUBST(all_gtfiles)
5036 AC_SUBST(all_lang_makefrags)
5037 AC_SUBST(all_languages)
5038 AC_SUBST(all_selected_languages)
5039 AC_SUBST(build_exeext)
5040 AC_SUBST(build_install_headers_dir)
5041 AC_SUBST(build_xm_file_list)
5042 AC_SUBST(build_xm_include_list)
5043 AC_SUBST(build_xm_defines)
5044 AC_SUBST(build_file_translate)
5045 AC_SUBST(check_languages)
5046 AC_SUBST(cpp_install_dir)
5047 AC_SUBST(xmake_file)
5048 AC_SUBST(tmake_file)
5049 AC_SUBST(TM_ENDIAN_CONFIG)
5050 AC_SUBST(TM_MULTILIB_CONFIG)
5051 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5052 AC_SUBST(extra_gcc_objs)
5053 AC_SUBST(user_headers_inc_next_pre)
5054 AC_SUBST(user_headers_inc_next_post)
5055 AC_SUBST(extra_headers_list)
5056 AC_SUBST(extra_objs)
5057 AC_SUBST(extra_programs)
5058 AC_SUBST(float_h_file)
5059 AC_SUBST(gcc_config_arguments)
5060 AC_SUBST(gcc_gxx_include_dir)
5061 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5062 AC_SUBST(host_exeext)
5063 AC_SUBST(host_xm_file_list)
5064 AC_SUBST(host_xm_include_list)
5065 AC_SUBST(host_xm_defines)
5066 AC_SUBST(out_host_hook_obj)
5068 AC_SUBST(lang_opt_files)
5069 AC_SUBST(lang_specs_files)
5070 AC_SUBST(lang_tree_files)
5071 AC_SUBST(local_prefix)
5073 AC_SUBST(objc_boehm_gc)
5075 AC_SUBST(out_object_file)
5076 AC_SUBST(common_out_file)
5077 AC_SUBST(common_out_object_file)
5078 AC_SUBST(tm_file_list)
5079 AC_SUBST(tm_include_list)
5080 AC_SUBST(tm_defines)
5081 AC_SUBST(tm_p_file_list)
5082 AC_SUBST(tm_p_include_list)
5083 AC_SUBST(xm_file_list)
5084 AC_SUBST(xm_include_list)
5085 AC_SUBST(xm_defines)
5086 AC_SUBST(use_gcc_stdint)
5087 AC_SUBST(c_target_objs)
5088 AC_SUBST(cxx_target_objs)
5089 AC_SUBST(fortran_target_objs)
5090 AC_SUBST(target_cpu_default)
5092 AC_SUBST_FILE(language_hooks)
5095 if test x${build} = x${host} ; then
5096 if test x${host} = x${target} ; then
5097 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5099 echo "Links are now set up to build a cross-compiler" 1>&2
5100 echo " from ${host} to ${target}." 1>&2
5103 if test x${host} = x${target} ; then
5104 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5105 echo " for ${target}." 1>&2
5107 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5108 echo " from ${host} to ${target}." 1>&2
5112 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5113 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5115 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5116 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5118 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5119 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5120 if test "x${CLOOGLIBS}" != "x" ; then
5121 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5124 # Check for plugin support
5125 AC_ARG_ENABLE(plugin,
5126 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5127 enable_plugin=$enableval,
5128 enable_plugin=yes; default_plugin=yes)
5134 if test x$build = x$host; then
5135 export_sym_check="nm${exeext} -g"
5136 elif test x$host = x$target; then
5137 export_sym_check="$gcc_cv_nm -g"
5143 if test x$build = x$host; then
5144 export_sym_check="objdump${exeext} -T"
5145 elif test x$host = x$target; then
5146 export_sym_check="$gcc_cv_objdump -T"
5153 if test x"$enable_plugin" = x"yes"; then
5155 AC_MSG_CHECKING([for exported symbols])
5156 if test "x$export_sym_check" != x; then
5157 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5158 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
5159 if $export_sym_check conftest | grep foobar > /dev/null; then
5160 : # No need to use a flag
5161 AC_MSG_RESULT([yes])
5163 AC_MSG_RESULT([yes])
5164 AC_MSG_CHECKING([for -rdynamic])
5165 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
5166 if $export_sym_check conftest | grep foobar > /dev/null; then
5168 pluginlibs="-rdynamic"
5173 AC_MSG_RESULT([$plugin_rdynamic])
5176 AC_MSG_RESULT([unable to check])
5181 AC_SEARCH_LIBS([dlopen], [dl])
5182 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5183 pluginlibs="$pluginlibs -ldl"
5187 # Check that we can build shared objects with -fPIC -shared
5188 saved_LDFLAGS="$LDFLAGS"
5189 saved_CFLAGS="$CFLAGS"
5192 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5193 CFLAGS="$CFLAGS -fPIC"
5194 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5197 CFLAGS="$CFLAGS -fPIC"
5198 LDFLAGS="$LDFLAGS -fPIC -shared"
5201 AC_MSG_CHECKING([for -fPIC -shared])
5203 [extern int X;],[return X == 0;],
5204 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5205 [AC_MSG_RESULT([no]); have_pic_shared=no])
5206 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5210 LDFLAGS="$saved_LDFLAGS"
5211 CFLAGS="$saved_CFLAGS"
5213 # If plugin support had been requested but not available, fail.
5214 if test x"$enable_plugin" = x"no" ; then
5215 if test x"$default_plugin" != x"yes"; then
5217 Building GCC with plugin support requires a host that supports
5218 -fPIC, -shared, -ldl and -rdynamic.])
5223 AC_SUBST(pluginlibs)
5224 AC_SUBST(enable_plugin)
5225 if test x"$enable_plugin" = x"yes"; then
5226 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5230 AC_ARG_ENABLE(libquadmath-support,
5231 [AS_HELP_STRING([--disable-libquadmath-support],
5232 [disable libquadmath support for Fortran])],
5233 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5234 ENABLE_LIBQUADMATH_SUPPORT=yes)
5235 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5236 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5237 [Define to 1 to enable libquadmath support])
5241 # Specify what hash style to use by default.
5242 AC_ARG_WITH([linker-hash-style],
5243 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5244 [specify the linker hash style])],
5245 [case x"$withval" in
5247 LINKER_HASH_STYLE=sysv
5250 LINKER_HASH_STYLE=gnu
5253 LINKER_HASH_STYLE=both
5256 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5259 [LINKER_HASH_STYLE=''])
5260 if test x"${LINKER_HASH_STYLE}" != x; then
5261 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5262 [The linker hash style])
5265 # Configure the subdirectories
5266 # AC_CONFIG_SUBDIRS($subdirs)
5268 # Create the Makefile
5269 # and configure language subdirectories
5270 AC_CONFIG_FILES($all_outputs)
5272 AC_CONFIG_COMMANDS([default],
5274 case ${CONFIG_HEADERS} in
5275 *auto-host.h:config.in*)
5278 # Make sure all the subdirs exist.
5279 for d in $subdirs doc build common c-family
5281 test -d $d || mkdir $d
5284 [subdirs='$subdirs'])