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, $gather_stats,
596 [Define to enable detailed memory allocation stats gathering.])
598 # -------------------------------
599 # Miscenalleous configure options
600 # -------------------------------
604 [AS_HELP_STRING([--with-stabs],
605 [arrange to use stabs instead of host debug format])],
609 # Determine whether or not multilibs are enabled.
610 AC_ARG_ENABLE(multilib,
611 [AS_HELP_STRING([--enable-multilib],
612 [enable library support for multiple ABIs])],
613 [], [enable_multilib=yes])
614 AC_SUBST(enable_multilib)
616 # Determine whether or not multiarch is enabled.
617 AC_ARG_ENABLE(multiarch,
618 [AS_HELP_STRING([--enable-multiarch],
619 [enable support for multiarch paths])],
620 [case "${withval}" in
621 yes|no|auto) enable_multiarch=$withval;;
622 *) AC_MSG_ERROR(bad value ${withval} given for --enable-multiarch option) ;;
623 esac], [enable_multiarch=auto])
624 if test x${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
641 # Enable __cxa_atexit for C++.
642 AC_ARG_ENABLE(__cxa_atexit,
643 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
646 # Enable C extension for decimal float if target supports it.
647 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
649 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
650 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
651 [Define to 1 to enable decimal float extension to C.])
653 # Use default_decimal_float for dependency.
654 enable_decimal_float=$default_decimal_float
656 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
657 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
658 [Define to 1 to specify that we are using the BID decimal floating
659 point format instead of DPD])
661 # Enable C extension for fixed-point arithmetic.
662 AC_ARG_ENABLE(fixed-point,
663 [AS_HELP_STRING([--enable-fixed-point],
664 [enable fixed-point arithmetic extension to C])],
669 enable_fixed_point=yes
673 enable_fixed_point=yes
676 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
677 enable_fixed_point=no
681 AC_SUBST(enable_fixed_point)
683 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
684 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
685 [Define to 1 to enable fixed-point arithmetic extension to C.])
688 # Pass with no value to take the default
689 # Pass with a value to specify a thread package
690 AC_ARG_ENABLE(threads,
691 [AS_HELP_STRING([[--enable-threads[=LIB]]],
692 [enable thread usage for target GCC,
693 using LIB thread package])],,
697 [AS_HELP_STRING([--enable-tls],
698 [enable or disable generation of tls code
699 overriding the assembler check for tls support])],
703 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
704 Valid choices are 'yes' and 'no'.]) ;;
708 AC_ARG_ENABLE(objc-gc,
709 [AS_HELP_STRING([--enable-objc-gc],
710 [enable the use of Boehm's garbage collector with
711 the GNU Objective-C runtime])],
712 if test x$enable_objc_gc = xno; then
720 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
721 dwarf2="$with_dwarf2",
724 AC_ARG_ENABLE(shared,
725 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
727 case $enable_shared in
731 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
732 for pkg in $enableval; do
733 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
740 ], [enable_shared=yes])
741 AC_SUBST(enable_shared)
743 AC_ARG_WITH([native-system-header-dir],
744 [ --with-native-system-header-dir=dir
745 use dir as the directory to look for standard
746 system header files in. Defaults to /usr/include.],
748 case ${with_native_system_header_dir} in
749 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
750 /* | [[A-Za-z]]:[[\\/]]*) ;;
751 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
753 configured_native_system_header_dir="${withval}"
754 ], [configured_native_system_header_dir=])
756 AC_ARG_WITH(build-sysroot,
757 [AS_HELP_STRING([--with-build-sysroot=sysroot],
758 [use sysroot as the system root during the build])],
759 [if test x"$withval" != x ; then
760 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
762 [SYSROOT_CFLAGS_FOR_TARGET=])
763 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
765 if test "x$prefix" = xNONE; then
766 test_prefix=/usr/local
770 if test "x$exec_prefix" = xNONE; then
771 test_exec_prefix=$test_prefix
773 test_exec_prefix=$exec_prefix
777 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
778 [search for usr/lib, usr/include, et al, within DIR])],
780 case ${with_sysroot} in
781 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
782 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
785 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
786 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
788 case ${TARGET_SYSTEM_ROOT} in
789 "${test_prefix}"|"${test_prefix}/"*|\
790 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
791 '${prefix}'|'${prefix}/'*|\
792 '${exec_prefix}'|'${exec_prefix}/'*)
793 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
794 TARGET_SYSTEM_ROOT_DEFINE="$t"
799 TARGET_SYSTEM_ROOT_DEFINE=
800 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
802 AC_SUBST(TARGET_SYSTEM_ROOT)
803 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
804 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
807 [AS_HELP_STRING([--with-specs=SPECS],
808 [add SPECS to driver command-line processing])],
809 [CONFIGURE_SPECS=$withval],
812 AC_SUBST(CONFIGURE_SPECS)
814 ACX_PKGVERSION([GCC])
815 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
817 # Sanity check enable_languages in case someone does not run the toplevel
818 # configure # script.
819 AC_ARG_ENABLE(languages,
820 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
821 [case ,${enable_languages}, in
823 # go safe -- we cannot be much sure without the toplevel
825 # analysis of which target libs are present and usable
829 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
834 enable_languages=c,${enable_languages}
837 [enable_languages=c])
839 AC_ARG_WITH(multilib-list,
840 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
842 with_multilib_list=default)
844 # -------------------------
845 # Checks for other programs
846 # -------------------------
850 # Find some useful tools
852 # We need awk to create options.c and options.h.
853 # Bail out if it's missing.
855 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
862 AC_SUBST(ranlib_flags)
866 # See if cmp has --ignore-initial.
867 gcc_AC_PROG_CMP_IGNORE_INITIAL
869 # See if we have the mktemp command.
870 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
872 # See if makeinfo has been installed and is modern enough
873 # that we can use it.
874 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
875 [GNU texinfo.* \([0-9][0-9.]*\)],
876 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
877 if test $gcc_cv_prog_makeinfo_modern = no; then
879 *** Makeinfo is missing or too old.
880 *** Info documentation will not be built.])
887 # Is pod2man recent enough to regenerate manpages?
888 AC_MSG_CHECKING([for recent Pod::Man])
889 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
891 GENERATED_MANPAGES=generated-manpages
896 AC_SUBST(GENERATED_MANPAGES)
898 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
901 dnl Don't use AC_PROG_LEX; we insist on flex.
902 dnl LEXLIB is not useful in gcc.
903 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
906 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
908 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
909 # check for build == host before using them.
912 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
913 && test -d ../binutils ; then
914 NM='${objdir}/../binutils/nm-new'
916 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
920 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
921 && test -d ../binutils ; then
922 AR='${objdir}/../binutils/ar'
924 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
928 # --------------------
929 # Checks for C headers
930 # --------------------
932 # Need to reject headers which give warnings, so that the -Werror bootstrap
933 # works later. *sigh* This needs to come before all header checks.
940 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
941 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
942 sys/resource.h sys/param.h sys/times.h sys/stat.h \
943 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h libintl.h)
945 # Check for thread headers.
946 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
947 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
949 # These tests can't be done till we know if we have limits.h.
953 # ----------------------
954 # Checks for C++ headers
955 # ----------------------
957 dnl Autoconf will give an error in the configure script if there is no
958 dnl C++ preprocessor. Hack to prevent that.
959 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
961 m4_popdef([AC_MSG_ERROR])[]dnl
965 AC_CHECK_HEADERS(unordered_map)
966 AC_CHECK_HEADERS(tr1/unordered_map)
967 AC_CHECK_HEADERS(ext/hash_map)
976 # These libraries may be used by collect2.
977 # We may need a special search path to get them linked.
978 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
980 for libs in '' -lld -lmld \
981 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
982 '-L/usr/lib/cmplrs/cc3.11 -lmld'
985 AC_TRY_LINK_FUNC(ldopen,
986 [gcc_cv_collect2_libs="$libs"; break])
989 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
990 case $gcc_cv_collect2_libs in
992 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
994 AC_SUBST(COLLECT2_LIBS)
996 # When building Ada code on Alpha, we need exc_resume which is usually in
997 # -lexc. So test for it.
1000 AC_SEARCH_LIBS(exc_resume, exc)
1003 AC_SUBST(GNAT_LIBEXC)
1005 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1008 AC_SEARCH_LIBS(kstat_open, kstat)
1009 EXTRA_GCC_LIBS="$LIBS"
1011 AC_SUBST(EXTRA_GCC_LIBS)
1013 # Some systems put ldexp and frexp in libm instead of libc; assume
1014 # they're both in the same place. jcf-dump needs them.
1017 AC_SEARCH_LIBS(ldexp, m)
1022 # Use <inttypes.h> only if it exists,
1023 # doesn't clash with <sys/types.h>, and declares intmax_t.
1024 AC_MSG_CHECKING(for inttypes.h)
1025 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1026 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1027 [[#include <sys/types.h>
1028 #include <inttypes.h>]],
1029 [[intmax_t i = -1;]])],
1030 [gcc_cv_header_inttypes_h=yes],
1031 [gcc_cv_header_inttypes_h=no])])
1032 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1033 if test $gcc_cv_header_inttypes_h = yes; then
1034 AC_DEFINE(HAVE_INTTYPES_H, 1,
1035 [Define if you have a working <inttypes.h> header file.])
1038 dnl Disabled until we have a complete test for buggy enum bitfields.
1039 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1041 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1042 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1043 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1044 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1045 putchar_unlocked putc_unlocked)
1046 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1047 sysconf strsignal getrusage nl_langinfo \
1048 gettimeofday mbstowcs wcswidth mmap setlocale \
1049 gcc_UNLOCKED_FUNCS madvise)
1051 if test x$ac_cv_func_mbstowcs = xyes; then
1052 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1053 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1059 [gcc_cv_func_mbstowcs_works=yes],
1060 [gcc_cv_func_mbstowcs_works=no],
1061 [gcc_cv_func_mbstowcs_works=yes])])
1062 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1063 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1064 [Define this macro if mbstowcs does not crash when its
1065 first argument is NULL.])
1069 AC_CHECK_TYPE(ssize_t, int)
1070 AC_CHECK_TYPE(caddr_t, char *)
1072 GCC_AC_FUNC_MMAP_BLACKLIST
1076 # Under VMS, vfork works very differently than on Unix. The standard test
1077 # won't work, and it isn't easily adaptable. It makes more sense to
1079 ac_cv_func_vfork_works=yes
1084 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1085 # iconv() prototype.
1090 # Until we have in-tree GNU iconv:
1092 AC_SUBST(LIBICONV_DEP)
1098 # We will need to find libiberty.h and ansidecl.h
1099 saved_CFLAGS="$CFLAGS"
1100 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1101 saved_CXXFLAGS="$CXXFLAGS"
1102 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include"
1103 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1104 strsignal strstr stpcpy strverscmp \
1105 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1106 free basename getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1107 #include "ansidecl.h"
1108 #include "system.h"])
1110 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1111 #include "ansidecl.h"
1113 #ifdef HAVE_SYS_RESOURCE_H
1114 #include <sys/resource.h>
1118 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1119 #include "ansidecl.h"
1121 #ifdef HAVE_SYS_RESOURCE_H
1122 #include <sys/resource.h>
1124 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1125 [Define to `long' if <sys/resource.h> doesn't define.])])
1127 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1128 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1129 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1130 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1131 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1132 #include "ansidecl.h"
1141 gcc_AC_CHECK_DECLS(times, , ,[
1142 #include "ansidecl.h"
1144 #ifdef HAVE_SYS_TIMES_H
1145 #include <sys/times.h>
1149 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1150 #include "ansidecl.h"
1155 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1158 gcc_AC_CHECK_DECLS(madvise, , ,[
1159 #include "ansidecl.h"
1164 # More time-related stuff.
1165 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1166 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1167 #include "ansidecl.h"
1169 #ifdef HAVE_SYS_TIMES_H
1170 #include <sys/times.h>
1172 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1173 if test $ac_cv_struct_tms = yes; then
1174 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1175 [Define if <sys/times.h> defines struct tms.])
1178 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1179 # revisit after autoconf 2.50.
1180 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1181 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1182 #include "ansidecl.h"
1184 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1185 if test $gcc_cv_type_clock_t = yes; then
1186 AC_DEFINE(HAVE_CLOCK_T, 1,
1187 [Define if <time.h> defines clock_t.])
1190 # Check if F_SETLKW is supported by fcntl.
1191 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1192 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1193 #include <fcntl.h>]], [[
1199 return fcntl (1, F_SETLKW, &fl);]])],
1200 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1201 if test $ac_cv_f_setlkw = yes; then
1202 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1203 [Define if F_SETLKW supported by fcntl.])
1206 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1207 CFLAGS="$saved_CFLAGS"
1208 CXXFLAGS="$saved_CXXFLAGS"
1210 # mkdir takes a single argument on some systems.
1211 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1219 # With Setjmp/Longjmp based exception handling.
1220 AC_ARG_ENABLE(sjlj-exceptions,
1221 [AS_HELP_STRING([--enable-sjlj-exceptions],
1222 [arrange to use setjmp/longjmp exception handling])],
1225 if test $enableval != yes; then
1226 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1231 force_sjlj_exceptions=yes],
1234 force_sjlj_exceptions=yes
1238 force_sjlj_exceptions=no
1241 if test $force_sjlj_exceptions = yes; then
1242 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1243 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1244 [Define 0/1 to force the choice for exception handling model.])
1247 # --------------------------------------------------------
1248 # Build, host, and target specific configuration fragments
1249 # --------------------------------------------------------
1251 # Collect build-machine-specific information.
1252 . ${srcdir}/config.build
1254 # Collect host-machine-specific information.
1255 . ${srcdir}/config.host
1259 # Collect target-machine-specific information.
1260 . ${srcdir}/config.gcc
1262 extra_objs="${host_extra_objs} ${extra_objs}"
1263 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1265 # Default the target-machine variables that were not explicitly set.
1266 if test x"$tm_file" = x
1267 then tm_file=$cpu_type/$cpu_type.h; fi
1269 if test x"$extra_headers" = x
1270 then extra_headers=; fi
1272 if test x$md_file = x
1273 then md_file=$cpu_type/$cpu_type.md; fi
1275 if test x$out_file = x
1276 then out_file=$cpu_type/$cpu_type.c; fi
1278 if test x"$tmake_file" = x
1279 then tmake_file=$cpu_type/t-$cpu_type
1282 # Support --enable-initfini-array.
1283 if test x$enable_initfini_array != xno; then
1284 tm_file="${tm_file} initfini-array.h"
1287 if test x"$dwarf2" = xyes
1288 then tm_file="$tm_file tm-dwarf2.h"
1291 # Say what files are being used for the output code and MD file.
1292 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1293 echo "Using \`$srcdir/config/$md_file' as machine description file."
1295 # If any of the xm_file variables contain nonexistent files, warn
1296 # about them and drop them.
1299 for x in $build_xm_file; do
1300 if test -f $srcdir/config/$x
1302 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1308 for x in $host_xm_file; do
1309 if test -f $srcdir/config/$x
1311 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1317 for x in $xm_file; do
1318 if test -f $srcdir/config/$x
1320 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1326 for f in $tm_file; do
1329 if test $count = ax; then
1330 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1332 echo "Using the following target machine macro files:"
1333 for f in $tm_file; do
1334 echo " $srcdir/config/$f"
1338 if test x$need_64bit_hwint = xyes; then
1339 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1340 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1343 if test x$use_long_long_for_widest_fast_int = xyes; then
1344 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1345 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1346 efficiently supported by the host hardware.])
1349 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1350 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1352 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1353 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1356 for f in $host_xm_file; do
1359 if test $count = a; then
1361 elif test $count = ax; then
1362 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1364 echo "Using the following host machine macro files:"
1365 for f in $host_xm_file; do
1366 echo " $srcdir/config/$f"
1369 echo "Using ${out_host_hook_obj} for host machine hooks."
1371 if test "$host_xm_file" != "$build_xm_file"; then
1373 for f in $build_xm_file; do
1376 if test $count = a; then
1378 elif test $count = ax; then
1379 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1381 echo "Using the following build machine macro files:"
1382 for f in $build_xm_file; do
1383 echo " $srcdir/config/$f"
1388 if test -n "$configured_native_system_header_dir"; then
1389 native_system_header_dir=$configured_native_system_header_dir
1391 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1392 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1396 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1397 gcc_cv_mcontext_underscores,
1399 #include <sys/cdefs.h>
1400 #include <sys/signal.h>
1401 #include <ucontext.h>
1402 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1404 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1405 if test $gcc_cv_mcontext_underscores = yes; then
1406 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1407 [mcontext_t fields start with __])
1416 # Check if a valid thread package
1417 case ${enable_threads} in
1420 target_thread_file='single'
1424 target_thread_file='single'
1426 aix | dce | lynx | mipssde | posix | rtems | \
1427 single | tpf | vxworks | win32)
1428 target_thread_file=${enable_threads}
1431 echo "${enable_threads} is an unknown thread package" 1>&2
1436 if test x${thread_file} = x; then
1437 # No thread file set by target-specific clauses in config.gcc,
1438 # so use file chosen by default logic above
1439 thread_file=${target_thread_file}
1447 if test x$enable___cxa_atexit = xyes || \
1448 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1449 if test x$host = x$target; then
1451 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1452 # keyed to flag_use_cxa_atexit
1457 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1458 [echo "__cxa_atexit can't be enabled on this target"])
1462 # We can't check for __cxa_atexit when building a cross, so assume
1466 if test x$use_cxa_atexit = xyes; then
1467 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1468 [Define if you want to use __cxa_atexit, rather than atexit, to
1469 register C++ destructors for local statics and global objects.
1470 This is essential for fully standards-compliant handling of
1471 destructors, but requires __cxa_atexit in libc.])
1475 # Look for a file containing extra machine modes.
1476 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1477 extra_modes_file='$(srcdir)'/config/${extra_modes}
1478 AC_SUBST(extra_modes_file)
1479 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1480 [Define to the name of a file containing a list of extra machine modes
1481 for this architecture.])
1484 # Convert extra_options into a form suitable for Makefile use.
1487 for f in $extra_options; do
1488 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1489 all_opt_files="$all_opt_files $srcdir/config/$f"
1491 AC_SUBST(extra_opt_files)
1493 # auto-host.h is the file containing items generated by autoconf and is
1494 # the first file included by config.h.
1495 # If host=build, it is correct to have bconfig include auto-host.h
1496 # as well. If host!=build, we are in error and need to do more
1497 # work to find out the build config parameters.
1498 if test x$host = x$build
1500 build_auto=auto-host.h
1502 # We create a subdir, then run autoconf in the subdir.
1503 # To prevent recursion we set host and build for the new
1504 # invocation of configure to the build for this invocation
1511 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1512 *) realsrcdir=../${srcdir};;
1514 saved_CFLAGS="${CFLAGS}"
1515 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1516 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1517 ${realsrcdir}/configure \
1518 --enable-languages=${enable_languages-all} \
1519 --target=$target_alias --host=$build_alias --build=$build_alias
1520 CFLAGS="${saved_CFLAGS}"
1522 # We just finished tests for the build machine, so rename
1523 # the file auto-build.h in the gcc directory.
1524 mv auto-host.h ../auto-build.h
1527 build_auto=auto-build.h
1529 AC_SUBST(build_subdir)
1531 tm_file="${tm_file} defaults.h"
1532 tm_p_file="${tm_p_file} tm-preds.h"
1533 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1534 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1535 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1536 # put this back in temporarily.
1537 xm_file="auto-host.h ansidecl.h ${xm_file}"
1544 # Compile in configure arguments.
1545 if test -f configargs.h ; then
1546 # Being re-configured.
1547 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1548 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1550 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1553 # Double all backslashes and backslash all quotes to turn
1554 # gcc_config_arguments into a C string.
1555 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1556 $gcc_config_arguments
1558 gcc_config_arguments_str=`cat conftest.out`
1561 cat > configargs.h <<EOF
1562 /* Generated automatically. */
1563 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1564 static const char thread_model[] = "$thread_file";
1566 static const struct {
1567 const char *name, *value;
1568 } configure_default_options[] = $configure_default_options;
1573 gcc_BASEVER=`cat $srcdir/BASE-VER`
1574 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1575 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1576 if test -f $srcdir/REVISION ; then
1577 gcc_REVISION=`cat $srcdir/REVISION`
1581 cat > plugin-version.h <<EOF
1582 #include "configargs.h"
1584 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1585 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1586 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1587 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1589 static char basever[] = "$gcc_BASEVER";
1590 static char datestamp[] = "$gcc_DATESTAMP";
1591 static char devphase[] = "$gcc_DEVPHASE";
1592 static char revision[] = "$gcc_REVISION";
1594 /* FIXME plugins: We should make the version information more precise.
1595 One way to do is to add a checksum. */
1597 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1599 configuration_arguments};
1603 # Internationalization
1604 ZW_GNU_GETTEXT_SISTER_DIR
1606 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1607 # -liconv on the link line twice.
1608 case "$LIBINTL" in *$LIBICONV*)
1612 AC_ARG_ENABLE(secureplt,
1613 [AS_HELP_STRING([--enable-secureplt],
1614 [enable -msecure-plt by default for PowerPC])],
1617 AC_ARG_ENABLE(leading-mingw64-underscores,
1618 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1619 [enable leading underscores on 64 bit mingw targets]),
1621 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1622 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1623 [Define if we should use leading underscore on 64 bit mingw targets])])
1626 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1629 AC_ARG_ENABLE(frame-pointer,
1630 [AS_HELP_STRING([--enable-frame-pointer],
1631 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1634 linux* | darwin[[8912]]*)
1635 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1637 enable_frame_pointer=no
1640 enable_frame_pointer=yes
1645 # Windows32 Registry support for specifying GCC installation paths.
1646 AC_ARG_ENABLE(win32-registry,
1647 [AS_HELP_STRING([--disable-win32-registry],
1648 [disable lookup of installation paths in the
1649 Registry on Windows hosts])
1650 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1651 AS_HELP_STRING([--enable-win32-registry=KEY],
1652 [use KEY instead of GCC version as the last portion
1653 of the registry key])],,)
1656 win32 | pe | cygwin* | mingw32* | uwin*)
1657 if test "x$enable_win32_registry" != xno; then
1658 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1661 if test "x$enable_win32_registry" != xno; then
1662 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1663 [Define to 1 if installation paths should be looked up in the Windows
1664 Registry. Ignored on non-Windows hosts.])
1666 if test "x$enable_win32_registry" != xyes \
1667 && test "x$enable_win32_registry" != x; then
1668 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1669 [Define to be the last component of the Windows registry key under which
1670 to look for installation paths. The full key used will be
1671 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1672 The default is the GCC version number.])
1678 # Get an absolute path to the GCC top-level source directory
1679 holddir=`${PWDCMD-pwd}`
1681 topdir=`${PWDCMD-pwd}`
1684 # Conditionalize the makefile for this host machine.
1686 for f in ${host_xmake_file}
1688 if test -f ${srcdir}/config/$f
1690 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1694 # Conditionalize the makefile for this target machine.
1696 for f in ${tmake_file}
1698 if test -f ${srcdir}/config/$f
1700 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1703 tmake_file="${tmake_file_}"
1705 out_object_file=`basename $out_file .c`.o
1706 common_out_object_file=`basename $common_out_file .c`.o
1708 tm_file_list="options.h"
1709 tm_include_list="options.h insn-constants.h"
1710 for f in $tm_file; do
1713 f=`echo $f | sed 's/^..//'`
1714 tm_file_list="${tm_file_list} $f"
1715 tm_include_list="${tm_include_list} $f"
1718 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1719 tm_include_list="${tm_include_list} $f"
1722 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1723 tm_include_list="${tm_include_list} config/$f"
1730 for f in $tm_p_file; do
1733 tm_p_file_list="${tm_p_file_list} $f"
1734 tm_p_include_list="${tm_p_include_list} $f"
1737 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1738 tm_p_include_list="${tm_p_include_list} config/$f"
1744 for f in $xm_file; do
1747 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1748 xm_include_list="${xm_include_list} $f"
1751 xm_file_list="${xm_file_list} $f"
1752 xm_include_list="${xm_include_list} $f"
1755 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1756 xm_include_list="${xm_include_list} config/$f"
1762 host_xm_include_list=
1763 for f in $host_xm_file; do
1766 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1767 host_xm_include_list="${host_xm_include_list} $f"
1770 host_xm_file_list="${host_xm_file_list} $f"
1771 host_xm_include_list="${host_xm_include_list} $f"
1774 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1775 host_xm_include_list="${host_xm_include_list} config/$f"
1781 for f in $build_xm_file; do
1784 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1785 build_xm_include_list="${build_xm_include_list} $f"
1787 auto-build.h | auto-host.h )
1788 build_xm_file_list="${build_xm_file_list} $f"
1789 build_xm_include_list="${build_xm_include_list} $f"
1792 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1793 build_xm_include_list="${build_xm_include_list} config/$f"
1798 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1799 # cross-compiler which does not use the native headers and libraries.
1800 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1801 CROSS= AC_SUBST(CROSS)
1802 ALL=all.internal AC_SUBST(ALL)
1803 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1805 if test "x$with_build_sysroot" != x; then
1806 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1808 # This value is used, even on a native system, because
1809 # CROSS_SYSTEM_HEADER_DIR is just
1810 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1811 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1814 if test x$host != x$target
1816 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1818 SYSTEM_HEADER_DIR=$build_system_header_dir
1819 case "$host","$target" in
1820 # Darwin crosses can use the host system's libraries and headers,
1821 # because of the fat library support. Of course, it must be the
1822 # same version of Darwin on both sides. Allow the user to
1823 # just say --target=foo-darwin without a version number to mean
1824 # "the version on this system".
1825 *-*-darwin*,*-*-darwin*)
1826 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1827 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1828 if test $hostos = $targetos -o $targetos = darwin ; then
1830 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1835 i?86-*-*,x86_64-*-* \
1836 | powerpc*-*-*,powerpc64*-*-*)
1837 CROSS="$CROSS -DNATIVE_CROSS" ;;
1842 if test "x$with_headers" = x; then
1849 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1850 SYSTEM_HEADER_DIR=$build_system_header_dir
1853 # If this is a cross-compiler that does not
1854 # have its own set of headers then define
1857 # If this is using newlib, without having the headers available now,
1858 # then define inhibit_libc in LIBGCC2_CFLAGS.
1859 # This prevents libgcc2 from containing any code which requires libc
1861 : ${inhibit_libc=false}
1862 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1863 test x$with_newlib = xyes ; } &&
1864 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1867 AC_SUBST(inhibit_libc)
1869 # When building gcc with a cross-compiler, we need to adjust things so
1870 # that the generator programs are still built with the native compiler.
1871 # Also, we cannot run fixincludes.
1873 # These are the normal (build=host) settings:
1874 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1875 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
1876 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1877 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
1878 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1879 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1881 # And these apply if build != host, or we are generating coverage data
1882 if test x$build != x$host || test "x$coverage_flags" != x
1884 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1885 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1888 # Expand extra_headers to include complete path.
1889 # This substitutes for lots of t-* files.
1891 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1892 for file in ${extra_headers} ; do
1893 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1896 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1897 if test x"$use_gcc_tgmath" = xyes
1898 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1901 # Define collect2 in Makefile.
1902 case $host_can_use_collect2 in
1904 *) collect2='collect2$(exeext)' ;;
1906 AC_SUBST([collect2])
1908 # Add a definition of USE_COLLECT2 if system wants one.
1909 case $use_collect2 in
1910 no) use_collect2= ;;
1913 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1914 xm_defines="${xm_defines} USE_COLLECT2"
1915 case $host_can_use_collect2 in
1917 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1923 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1924 [Define to the name of the LTO plugin DSO that must be
1925 passed to the linker's -plugin=LIB option.])
1927 # ---------------------------
1928 # Assembler & linker features
1929 # ---------------------------
1931 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1932 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1933 # However when ld-new is first executed from the build tree, libtool will
1934 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1935 # to the build tree. While doing this we need to use the previous-stage
1936 # linker, or we have an infinite loop. The presence of a shell script as
1937 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1938 # the gcc/collect-ld script. So we need to know how libtool works, or
1939 # exec-tool will fail.
1941 m4_defun([_LT_CONFIG_COMMANDS], [])
1944 AC_SUBST(enable_fast_install)
1946 # Identify the assembler which will work hand-in-glove with the newly
1947 # built GCC, so that we can examine its features. This is the assembler
1948 # which will be driven by the driver program.
1950 # If build != host, and we aren't building gas in-tree, we identify a
1951 # build->target assembler and hope that it will have the same features
1952 # as the host->target assembler we'll be using.
1953 gcc_cv_gas_major_version=
1954 gcc_cv_gas_minor_version=
1955 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1957 m4_pattern_allow([AS_FOR_TARGET])dnl
1958 AS_VAR_SET_IF(gcc_cv_as,, [
1959 if test -x "$DEFAULT_ASSEMBLER"; then
1960 gcc_cv_as="$DEFAULT_ASSEMBLER"
1961 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1962 && test -f ../gas/Makefile \
1963 && test x$build = x$host; then
1964 gcc_cv_as=../gas/as-new$build_exeext
1965 elif test -x as$build_exeext; then
1966 # Build using assembler in the current directory.
1967 gcc_cv_as=./as$build_exeext
1968 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1969 gcc_cv_as="$AS_FOR_TARGET"
1971 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1974 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1975 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1976 case "$ORIGINAL_AS_FOR_TARGET" in
1977 ./as | ./as$build_exeext) ;;
1978 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1981 AC_MSG_CHECKING(what assembler to use)
1982 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1983 # Single tree build which includes gas. We want to prefer it
1984 # over whatever linker top-level may have detected, since
1985 # we'll use what we're building after installation anyway.
1986 AC_MSG_RESULT(newly built gas)
1988 _gcc_COMPUTE_GAS_VERSION
1989 in_tree_gas_is_elf=no
1990 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1991 || (grep 'obj_format = multi' ../gas/Makefile \
1992 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1994 in_tree_gas_is_elf=yes
1997 AC_MSG_RESULT($gcc_cv_as)
2001 # Identify the linker which will work hand-in-glove with the newly
2002 # built GCC, so that we can examine its features. This is the linker
2003 # which will be driven by the driver program.
2005 # If build != host, and we aren't building gas in-tree, we identify a
2006 # build->target linker and hope that it will have the same features
2007 # as the host->target linker we'll be using.
2008 gcc_cv_gld_major_version=
2009 gcc_cv_gld_minor_version=
2010 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2011 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2013 AS_VAR_SET_IF(gcc_cv_ld,, [
2014 if test -x "$DEFAULT_LINKER"; then
2015 gcc_cv_ld="$DEFAULT_LINKER"
2016 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2017 && test -f ../ld/Makefile \
2018 && test x$build = x$host; then
2019 gcc_cv_ld=../ld/ld-new$build_exeext
2020 elif test -x collect-ld$build_exeext; then
2021 # Build using linker in the current directory.
2022 gcc_cv_ld=./collect-ld$build_exeext
2023 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2024 gcc_cv_ld="$LD_FOR_TARGET"
2026 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2029 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2030 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2031 # if the PLUGIN_LD is set ld-new, just have it as ld
2032 # as that is the installed named.
2033 if test x$PLUGIN_LD_SUFFIX == xld-new \
2034 || test x$PLUGIN_LD_SUFFIX == xcollect-ld ; then
2037 AC_ARG_WITH(plugin-ld,
2038 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2039 [if test x"$withval" != x; then
2040 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2041 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2043 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2044 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2046 # Check to see if we are using gold instead of ld
2047 AC_MSG_CHECKING(whether we are using gold)
2049 if test x$gcc_cv_ld != x; then
2050 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2051 | grep "GNU gold" > /dev/null; then
2055 AC_MSG_RESULT($ld_is_gold)
2057 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2058 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2059 case "$ORIGINAL_LD_FOR_TARGET" in
2060 ./collect-ld | ./collect-ld$build_exeext) ;;
2061 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2064 AC_MSG_CHECKING(what linker to use)
2065 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2066 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2067 # Single tree build which includes ld. We want to prefer it
2068 # over whatever linker top-level may have detected, since
2069 # we'll use what we're building after installation anyway.
2070 AC_MSG_RESULT(newly built ld)
2072 in_tree_ld_is_elf=no
2073 if (grep 'EMUL = .*elf' ../ld/Makefile \
2074 || grep 'EMUL = .*linux' ../ld/Makefile \
2075 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2076 in_tree_ld_is_elf=yes
2077 elif test "$ld_is_gold" = yes; then
2078 in_tree_ld_is_elf=yes
2080 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
2083 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2084 if test x$gcc_cv_gld_version != x; then
2088 case $gcc_cv_gld_version in
2091 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2094 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2095 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2098 AC_MSG_RESULT($gcc_cv_ld)
2102 # Figure out what nm we will be using.
2103 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2104 AS_VAR_SET_IF(gcc_cv_nm,, [
2105 if test -f $gcc_cv_binutils_srcdir/configure.in \
2106 && test -f ../binutils/Makefile \
2107 && test x$build = x$host; then
2108 gcc_cv_nm=../binutils/nm-new$build_exeext
2109 elif test -x nm$build_exeext; then
2110 gcc_cv_nm=./nm$build_exeext
2111 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2112 gcc_cv_nm="$NM_FOR_TARGET"
2114 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2117 AC_MSG_CHECKING(what nm to use)
2118 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2119 # Single tree build which includes binutils.
2120 AC_MSG_RESULT(newly built nm)
2123 AC_MSG_RESULT($gcc_cv_nm)
2127 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2128 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2129 case "$ORIGINAL_NM_FOR_TARGET" in
2130 ./nm | ./nm$build_exeext) ;;
2131 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2135 # Figure out what objdump we will be using.
2136 AS_VAR_SET_IF(gcc_cv_objdump,, [
2137 if test -f $gcc_cv_binutils_srcdir/configure.in \
2138 && test -f ../binutils/Makefile \
2139 && test x$build = x$host; then
2140 # Single tree build which includes binutils.
2141 gcc_cv_objdump=../binutils/objdump$build_exeext
2142 elif test -x objdump$build_exeext; then
2143 gcc_cv_objdump=./objdump$build_exeext
2144 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2145 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2147 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2150 AC_MSG_CHECKING(what objdump to use)
2151 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2152 # Single tree build which includes binutils.
2153 AC_MSG_RESULT(newly built objdump)
2154 elif test x$gcc_cv_objdump = x; then
2155 AC_MSG_RESULT(not found)
2157 AC_MSG_RESULT($gcc_cv_objdump)
2160 # Figure out what readelf we will be using.
2161 AS_VAR_SET_IF(gcc_cv_readelf,, [
2162 if test -f $gcc_cv_binutils_srcdir/configure.in \
2163 && test -f ../binutils/Makefile \
2164 && test x$build = x$host; then
2165 # Single tree build which includes binutils.
2166 gcc_cv_readelf=../binutils/readelf$build_exeext
2167 elif test -x readelf$build_exeext; then
2168 gcc_cv_readelf=./readelf$build_exeext
2170 AC_PATH_PROG(gcc_cv_readelf, readelf)
2173 AC_MSG_CHECKING(what readelf to use)
2174 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2175 # Single tree build which includes binutils.
2176 AC_MSG_RESULT(newly built readelf)
2177 elif test x$gcc_cv_readelf = x; then
2178 AC_MSG_RESULT(not found)
2180 AC_MSG_RESULT($gcc_cv_readelf)
2183 # Figure out what assembler alignment features are present.
2184 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2188 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2189 [Define if your assembler supports .balign and .p2align.])])
2191 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2194 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2195 [Define if your assembler supports specifying the maximum number
2196 of bytes to skip when using the GAS .p2align command.])])
2198 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2201 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2202 [Define if your assembler supports .literal16.])])
2204 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2206 [conftest_label1: .word 0
2208 conftest_label2: .word 0
2210 [if test x$gcc_cv_nm != x; then
2211 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2212 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2213 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2215 else gcc_cv_as_subsection_m1=yes
2217 rm -f conftest.nm1 conftest.nm2
2219 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2220 [Define if your assembler supports .subsection and .subsection -1 starts
2221 emitting at the beginning of your section.])])
2223 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2226 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2228 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2230 [ .weakref foobar, barfnot],,
2231 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2233 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2236 .NSUBSPA $CODE$,COMDAT],,
2237 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2239 # .hidden needs to be supported in both the assembler and the linker,
2240 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2241 # This is irritatingly difficult to feature test for; we have to check the
2242 # date string after the version number. If we've got an in-tree
2243 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2245 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2246 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2250 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2251 # STV_HIDDEN, so disable .hidden support if so.
2253 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2254 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2255 cat > conftest.s <<EOF
2262 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2263 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2264 grep '\.hidden default' > /dev/null; then
2267 gcc_cv_as_hidden=yes
2270 # Assume bug is present if objdump is missing.
2275 gcc_cv_as_hidden=yes
2280 # Darwin as has some visibility support, though with a different syntax.
2281 gcc_cv_as_hidden=yes
2285 # gnu_indirect_function type is an extension proposed at
2286 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2287 # selection of function implementation
2288 AC_ARG_ENABLE(gnu-indirect-function,
2289 [AS_HELP_STRING([--enable-gnu-indirect-function],
2290 [enable the use of the @gnu_indirect_function to glibc systems])],
2291 [case $enable_gnu_indirect_function in
2293 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2294 Valid choices are 'yes' and 'no'.]) ;;
2296 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2297 if test x$enable_gnu_indirect_function = xyes; then
2298 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2299 [Define if your system supports gnu indirect functions.])
2303 if test $in_tree_ld != yes ; then
2304 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2305 if echo "$ld_ver" | grep GNU > /dev/null; then
2306 if test x"$ld_is_gold" = xyes; then
2307 # GNU gold --version looks like this:
2309 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2311 # We extract the binutils version which is more familiar and specific
2312 # than the gold version.
2313 ld_vers=`echo $ld_ver | sed -n \
2314 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2316 # GNU ld --version looks like this:
2318 # GNU ld (GNU Binutils) 2.21.51.20110225
2319 ld_vers=`echo $ld_ver | sed -n \
2320 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2322 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2323 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2324 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2325 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2329 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2332 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2333 # /usr/ccs/bin/ld has been configured.
2334 ld_ver=`$gcc_cv_ld -V 2>&1`
2335 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2336 ld_vers=`echo $ld_ver | sed -n \
2337 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2338 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2339 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2347 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2348 [[if test $in_tree_ld = yes ; then
2350 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2351 && test $in_tree_ld_is_elf = yes; then
2352 gcc_cv_ld_hidden=yes
2355 gcc_cv_ld_hidden=yes
2356 if test x"$ld_is_gold" = xyes; then
2358 elif echo "$ld_ver" | grep GNU > /dev/null; then
2360 mmix-knuth-mmixware)
2361 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2365 if test 0"$ld_date" -lt 20020404; then
2366 if test -n "$ld_date"; then
2367 # If there was date string, but was earlier than 2002-04-04, fail
2369 elif test -z "$ld_vers"; then
2370 # If there was no date string nor ld version number, something is wrong
2373 test -z "$ld_vers_patch" && ld_vers_patch=0
2374 if test "$ld_vers_major" -lt 2; then
2376 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2377 gcc_cv_ld_hidden="no"
2378 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2386 # Darwin ld has some visibility support.
2387 gcc_cv_ld_hidden=yes
2389 hppa64*-*-hpux* | ia64*-*-hpux*)
2390 gcc_cv_ld_hidden=yes
2392 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2393 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2394 # .symbolic was only added in Solaris 9 12/02.
2395 gcc_cv_ld_hidden=yes
2403 libgcc_visibility=no
2404 AC_SUBST(libgcc_visibility)
2405 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2406 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2407 libgcc_visibility=yes
2408 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2409 [Define if your assembler and linker support .hidden.])
2412 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2413 gcc_cv_ld_ro_rw_mix=unknown
2414 if test $in_tree_ld = yes ; then
2415 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2416 && test $in_tree_ld_is_elf = yes; then
2417 gcc_cv_ld_ro_rw_mix=read-write
2419 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2420 echo '.section myfoosect, "a"' > conftest1.s
2421 echo '.section myfoosect, "aw"' > conftest2.s
2422 echo '.byte 1' >> conftest2.s
2423 echo '.section myfoosect, "a"' > conftest3.s
2424 echo '.byte 0' >> conftest3.s
2425 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2426 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2427 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2428 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2429 conftest2.o conftest3.o > /dev/null 2>&1; then
2430 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2431 | sed -e '/myfoosect/!d' -e N`
2432 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2433 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2434 gcc_cv_ld_ro_rw_mix=read-only
2436 gcc_cv_ld_ro_rw_mix=read-write
2441 rm -f conftest.* conftest[123].*
2444 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2445 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2446 [Define if your linker links a mix of read-only
2447 and read-write sections into a read-write section.])
2449 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2451 gcc_AC_INITFINI_ARRAY
2453 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2454 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2462 [[# GAS versions before 2.11 do not support uleb128,
2463 # despite appearing to.
2464 # ??? There exists an elf-specific test that will crash
2465 # the assembler. Perhaps it's better to figure out whether
2466 # arbitrary sections are supported and try the test.
2467 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2468 if echo "$as_ver" | grep GNU > /dev/null; then
2469 as_vers=`echo $as_ver | sed -n \
2470 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2471 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2472 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2473 if test $as_major -eq 2 && test $as_minor -lt 11
2475 else gcc_cv_as_leb128=yes
2478 [AC_DEFINE(HAVE_AS_LEB128, 1,
2479 [Define if your assembler supports .sleb128 and .uleb128.])])
2481 # Check if we have assembler support for unwind directives.
2482 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2489 .cfi_escape 1, 2, 3, 4, 5
2493 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2494 # read-only and read-write sections, we need to make sure that the
2495 # assembler used emits read-write .eh_frame sections.
2496 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2497 if test "x$gcc_cv_objdump" != x; then
2498 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2499 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2500 gcc_cv_as_cfi_directive=no
2503 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2504 # On Solaris/x86, make sure that GCC and gas agree on using
2505 # read-only .eh_frame sections for 64-bit.
2506 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2507 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2508 sed -e /.eh_frame/!d -e N | \
2509 grep READONLY > /dev/null; then
2510 gcc_cv_as_cfi_directive=yes
2512 gcc_cv_as_cfi_directive=no
2516 gcc_cv_as_cfi_directive=yes
2521 # no objdump, err on the side of caution
2522 gcc_cv_as_cfi_directive=no
2525 gcc_cv_as_cfi_directive=yes
2529 gcc_cv_as_cfi_directive=yes
2532 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2533 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2537 .cfi_adjust_cfa_offset 64
2539 .cfi_adjust_cfa_offset 128
2542 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2543 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2544 gcc_cv_as_cfi_advance_working=yes
2548 # no objdump, err on the side of caution
2549 gcc_cv_as_cfi_advance_working=no
2551 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2552 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2553 [`if test $gcc_cv_as_cfi_directive = yes \
2554 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2555 [Define 0/1 if your assembler supports CFI directives.])
2557 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2558 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2559 gcc_cv_as_cfi_personality_directive, ,,
2562 .cfi_personality 0, symbol
2564 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2565 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2566 then echo 1; else echo 0; fi`],
2567 [Define 0/1 if your assembler supports .cfi_personality.])
2569 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2570 gcc_cv_as_cfi_sections_directive, ,,
2572 .cfi_sections .debug_frame, .eh_frame
2576 win32 | pe | cygwin* | mingw32* | uwin*)
2577 # Need to check that we generated the correct relocation for the
2578 # .debug_frame section. This was fixed for binutils 2.21.
2579 gcc_cv_as_cfi_sections_directive=no
2580 if test "x$gcc_cv_objdump" != x; then
2581 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2582 grep secrel > /dev/null; then
2583 gcc_cv_as_cfi_sections_directive=yes
2588 gcc_cv_as_cfi_sections_directive=yes
2591 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2592 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2593 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2594 then echo 1; else echo 0; fi`],
2595 [Define 0/1 if your assembler supports .cfi_sections.])
2597 # GAS versions up to and including 2.11.0 may mis-optimize
2599 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2607 .section .eh_frame,"aw",@progbits
2609 .4byte .LECIE1-.LSCIE1
2623 .4byte .LEFDE1-.LASFDE1
2625 .4byte .LASFDE1-__FRAME_BEGIN__
2633 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2634 cat > conftest.lit <<EOF
2635 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2636 0010 01000000 12000000 18000000 00000000 ................
2637 0020 08000000 04080000 0044 .........D @&t@
2639 cat > conftest.big <<EOF
2640 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2641 0010 00000001 00000012 00000018 00000000 ................
2642 0020 00000008 04000000 0844 .........D @&t@
2644 # If the assembler didn't choke, and we can objdump,
2645 # and we got the correct data, then succeed.
2646 # The text in the here-document typically retains its unix-style line
2647 # endings, while the output of objdump will use host line endings.
2648 # Therefore, use diff -b for the comparisons.
2649 if test x$gcc_cv_objdump != x \
2650 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2651 | tail -3 > conftest.got \
2652 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2653 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2655 gcc_cv_as_eh_frame=yes
2656 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2657 gcc_cv_as_eh_frame=buggy
2659 # Uh oh, what do we do now?
2660 gcc_cv_as_eh_frame=no
2663 if test $gcc_cv_as_eh_frame = buggy; then
2664 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2665 [Define if your assembler mis-optimizes .eh_frame data.])
2668 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2669 [elf,2,12,0], [--fatal-warnings],
2670 [.section .rodata.str, "aMS", @progbits, 1])
2671 if test $gcc_cv_as_shf_merge = no; then
2672 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2673 [elf,2,12,0], [--fatal-warnings],
2674 [.section .rodata.str, "aMS", %progbits, 1])
2676 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2677 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2678 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2680 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2681 gcc_cv_as_comdat_group,
2682 [elf,2,16,0], [--fatal-warnings],
2683 [.section .text,"axG",@progbits,.foo,comdat])
2684 if test $gcc_cv_as_comdat_group = yes; then
2685 gcc_cv_as_comdat_group_percent=no
2686 gcc_cv_as_comdat_group_group=no
2688 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2689 gcc_cv_as_comdat_group_percent,
2690 [elf,2,16,0], [--fatal-warnings],
2691 [.section .text,"axG",%progbits,.foo,comdat])
2692 if test $gcc_cv_as_comdat_group_percent = yes; then
2693 gcc_cv_as_comdat_group_group=no
2695 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2696 gcc_cv_as_comdat_group_group=no
2699 # Sun as uses a completely different syntax.
2704 .group foo,".text%foo",#comdat
2705 .section ".text%foo", #alloc,#execinstr,#progbits
2710 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2712 .group foo,.text%foo,#comdat
2713 .section .text%foo, "ax", @progbits
2719 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2720 gcc_cv_as_comdat_group_group,
2726 if test x"$ld_is_gold" = xyes; then
2728 elif test $in_tree_ld = yes ; then
2730 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2731 && test $in_tree_ld_is_elf = yes; then
2734 elif echo "$ld_ver" | grep GNU > /dev/null; then
2736 if test 0"$ld_date" -lt 20050308; then
2737 if test -n "$ld_date"; then
2738 # If there was date string, but was earlier than 2005-03-08, fail
2740 elif test "$ld_vers_major" -lt 2; then
2742 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2749 *-*-solaris2.1[1-9]*)
2751 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2752 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2755 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2756 # least ld version 1.2267.
2757 if test "$ld_vers_major" -gt 1; then
2759 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2761 elif test "$ld_vers_minor" -ge 2267; then
2766 # Assume linkers other than GNU ld don't support COMDAT group.
2772 # Allow overriding the automatic COMDAT group tests above.
2773 AC_ARG_ENABLE(comdat,
2774 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2775 [comdat_group="$enable_comdat"])
2776 if test $comdat_group = no; then
2777 gcc_cv_as_comdat_group=no
2778 gcc_cv_as_comdat_group_percent=no
2779 gcc_cv_as_comdat_group_group=no
2781 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2782 [`if test $gcc_cv_as_comdat_group = yes \
2783 || test $gcc_cv_as_comdat_group_percent = yes \
2784 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2785 [Define 0/1 if your assembler and linker support COMDAT groups.])
2787 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2788 gcc_cv_as_discriminator,
2792 .loc 1 1 0 discriminator 1],,
2793 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2794 [Define if your assembler supports the .loc discriminator sub-directive.])])
2796 # Thread-local storage - the check is heavily parameterized.
2805 .section ".tdata","awT",@progbits
2808 ldq $27,__tls_get_addr($29) !literal!1
2809 lda $16,foo($29) !tlsgd!1
2810 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2811 ldq $27,__tls_get_addr($29) !literal!2
2812 lda $16,foo($29) !tlsldm!2
2813 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2814 ldq $1,foo($29) !gotdtprel
2815 ldah $2,foo($29) !dtprelhi
2816 lda $3,foo($2) !dtprello
2817 lda $4,foo($29) !dtprel
2818 ldq $1,foo($29) !gottprel
2819 ldah $2,foo($29) !tprelhi
2820 lda $3,foo($2) !tprello
2821 lda $4,foo($29) !tprel'
2824 tls_as_opt=--fatal-warnings
2826 cris-*-*|crisv32-*-*)
2828 .section ".tdata","awT",@progbits
2835 tls_as_opt=--fatal-warnings
2839 .section ".tdata","awT",@progbits
2851 .section ".tdata","awT",@progbits
2855 addil LT%foo-$tls_gdidx$,gp
2856 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2859 addil LT%foo-$tls_ldidx$,gp
2861 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2862 addil LR%foo-$tls_dtpoff$,%ret0
2863 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2865 addil LT%foo-$tls_ieoff$,gp
2866 ldw RT%foo-$tls_ieoff$(%r1),%t2
2869 addil LR%foo-$tls_leoff$,%t1
2870 ldo RR%foo-$tls_leoff$(%r1),%t2'
2873 tls_as_opt=--fatal-warnings
2877 .section ".tdata","awT",%progbits
2888 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2890 i[34567]86-*-solaris2.*)
2892 tga_func=___tls_get_addr
2894 x86_64-*-solaris2.1[0-9]*)
2896 tga_func=__tls_get_addr
2902 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2904 .section .tdata,"awt",@progbits'
2908 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2909 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2913 .section ".tdata","awT",@progbits'
2916 tls_as_opt="--fatal-warnings"
2918 conftest_s="$conftest_s
2922 leal foo@tlsgd(,%ebx,1), %eax
2923 leal foo@tlsldm(%ebx), %eax
2924 leal foo@dtpoff(%eax), %edx
2925 movl foo@gottpoff(%ebx), %eax
2926 subl foo@gottpoff(%ebx), %eax
2927 addl foo@gotntpoff(%ebx), %eax
2928 movl foo@indntpoff, %eax
2929 movl \$foo@tpoff, %eax
2930 subl \$foo@tpoff, %eax
2931 leal foo@ntpoff(%ecx), %eax"
2935 .section ".tdata","awT",@progbits
2939 leaq foo@TLSGD(%rip), %rdi
2940 leaq foo@TLSLD(%rip), %rdi
2941 leaq foo@DTPOFF(%rax), %rdx
2942 movq foo@GOTTPOFF(%rip), %rax
2943 movq $foo@TPOFF, %rax'
2946 tls_as_opt=--fatal-warnings
2950 .section ".tdata","awT",@progbits
2953 addl r16 = @ltoff(@dtpmod(foo#)), gp
2954 addl r17 = @ltoff(@dtprel(foo#)), gp
2955 addl r18 = @ltoff(@tprel(foo#)), gp
2956 addl r19 = @dtprel(foo#), gp
2957 adds r21 = @dtprel(foo#), r13
2958 movl r23 = @dtprel(foo#)
2959 addl r20 = @tprel(foo#), gp
2960 adds r22 = @tprel(foo#), r13
2961 movl r24 = @tprel(foo#)'
2964 tls_as_opt=--fatal-warnings
2968 .section .tdata,"awT",@progbits
2972 addiu $4, $28, %tlsgd(x)
2973 addiu $4, $28, %tlsldm(x)
2974 lui $4, %dtprel_hi(x)
2975 addiu $4, $4, %dtprel_lo(x)
2976 lw $4, %gottprel(x)($28)
2977 lui $4, %tprel_hi(x)
2978 addiu $4, $4, %tprel_lo(x)'
2981 tls_as_opt='-32 --fatal-warnings'
2985 .section .tdata,"awT",@progbits
2990 move.l x@TLSGD(%a5),%a0
2991 move.l x@TLSLDM(%a5),%a0
2992 move.l x@TLSLDO(%a5),%a0
2993 move.l x@TLSIE(%a5),%a0
2994 move.l x@TLSLE(%a5),%a0'
2997 tls_as_opt='--fatal-warnings'
3001 .section ".tdata","awT",%progbits
3005 add x0, x0, #:tlsgd_lo12:x
3010 tls_as_opt='--fatal-warnings'
3014 .section ".tdata","awT",@progbits
3022 addi 3,31,ld0@got@tlsgd
3024 addi 3,31,x1@got@tlsld
3027 addis 9,3,x2@dtprel@ha
3028 addi 9,9,x2@dtprel@l
3029 lwz 9,x3@got@tprel(31)
3032 addis 9,2,x2@tprel@ha
3033 addi 9,9,x2@tprel@l'
3036 tls_as_opt="-a32 --fatal-warnings"
3040 .section ".tdata","awT",@progbits
3048 addi 3,2,ld0@got@tlsgd
3054 addi 3,2,x1@got@tlsld
3060 addis 9,3,x2@dtprel@ha
3061 addi 9,9,x2@dtprel@l
3064 ld 9,x3@got@dtprel(2)
3070 tls_as_opt="-a64 --fatal-warnings"
3074 .section ".tdata","awT",@progbits
3083 l %r1,foo@GOTNTPOFF(%r12)
3084 l %r1,0(%r1):tls_load:foo
3085 bas %r14,0(%r1,%r13):tls_gdcall:foo
3086 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3089 tls_as_opt="-m31 --fatal-warnings"
3093 .section ".tdata","awT",@progbits
3101 lg %r1,foo@GOTNTPOFF(%r12)
3102 larl %r1,foo@INDNTPOFF
3103 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3104 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3107 tls_as_opt="-m64 -Aesame --fatal-warnings"
3109 sh-*-* | sh[34]-*-*)
3111 .section ".tdata","awT",@progbits
3121 tls_as_opt=--fatal-warnings
3125 sparc*-sun-solaris2.*)
3127 tga_func=__tls_get_addr
3133 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3135 .section ".tdata",#alloc,#write,#tls'
3140 .section ".tdata","awT",@progbits'
3143 tls_as_opt="-32 --fatal-warnings"
3145 conftest_s="$conftest_s
3148 sethi %tgd_hi22(foo), %o0
3149 add %o0, %tgd_lo10(foo), %o1
3150 add %l7, %o1, %o0, %tgd_add(foo)
3151 call __tls_get_addr, %tgd_call(foo)
3152 sethi %tldm_hi22(foo), %l1
3153 add %l1, %tldm_lo10(foo), %l2
3154 add %l7, %l2, %o0, %tldm_add(foo)
3155 call __tls_get_addr, %tldm_call(foo)
3156 sethi %tldo_hix22(foo), %l3
3157 xor %l3, %tldo_lox10(foo), %l4
3158 add %o0, %l4, %l5, %tldo_add(foo)
3159 sethi %tie_hi22(foo), %o3
3160 add %o3, %tie_lo10(foo), %o3
3161 ld [%l7 + %o3], %o2, %tie_ld(foo)
3162 add %g7, %o2, %o4, %tie_add(foo)
3163 sethi %tle_hix22(foo), %l1
3164 xor %l1, %tle_lox10(foo), %o5
3165 ld [%g7 + %o5], %o1"
3169 .section ".tdata","awT",@progbits
3172 addli r0, zero, tls_gd(foo)
3173 auli r0, zero, tls_gd_ha16(foo)
3174 addli r0, r0, tls_gd_lo16(foo)
3176 addli r0, zero, tls_ie(foo)
3177 auli r0, r0, tls_ie_ha16(foo)
3178 addli r0, r0, tls_ie_lo16(foo)'
3181 tls_as_opt="--fatal-warnings"
3185 .section ".tdata","awT",@progbits
3188 shl16insli r0, zero, hw0_last_tls_gd(foo)
3189 shl16insli r0, zero, hw1_last_tls_gd(foo)
3190 shl16insli r0, r0, hw0_tls_gd(foo)
3192 shl16insli r0, zero, hw1_last_tls_ie(foo)
3193 shl16insli r0, r0, hw0_tls_ie(foo)'
3196 tls_as_opt="--fatal-warnings"
3200 .section ".tdata","awT",@progbits
3203 movi a8, foo@TLSFUNC
3204 movi a10, foo@TLSARG
3205 callx8.tls a8, foo@TLSCALL'
3212 if test "x$enable_tls" = xno ; then
3213 : # TLS explicitly disabled.
3214 elif test "x$enable_tls" = xyes ; then
3215 set_have_as_tls=yes # TLS explicitly enabled.
3216 elif test -z "$tls_first_major"; then
3217 : # If we don't have a check, assume no support.
3219 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3220 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3221 [set_have_as_tls=yes])
3224 # TLS was introduced in the Solaris 9 FCS release. Support for GNU-style
3225 # TLS on x86 was only introduced in Solaris 9 4/04, replacing the earlier
3226 # Sun style that Sun ld and GCC don't support any longer.
3228 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3230 # Check ld and ld.so.1 TLS support.
3231 if echo "$ld_ver" | grep GNU > /dev/null; then
3232 # Assume all interesting versions of GNU ld have TLS support.
3233 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3237 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3239 min_tls_ld_vers_minor=374
3241 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3242 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3243 min_tls_ld_vers_minor=343
3246 if test "$ld_vers_major" -gt 1 || \
3247 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3253 AC_MSG_RESULT($ld_tls_support)
3256 save_LDFLAGS="$LDFLAGS"
3260 AC_MSG_CHECKING(library containing $tga_func)
3261 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3262 # (32-bit x86) only lived in libthread, so check for that. Keep
3263 # set_have_as_tls if found, disable if not.
3264 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3265 # Clear LIBS if we cannot support TLS.
3266 if test $set_have_as_tls = no; then
3269 # Always define LIB_TLS_SPEC, even without TLS support.
3270 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3271 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3272 AC_MSG_RESULT($LIBS)
3275 LDFLAGS="$save_LDFLAGS"
3278 if test $set_have_as_tls = yes ; then
3279 AC_DEFINE(HAVE_AS_TLS, 1,
3280 [Define if your assembler and linker support thread-local storage.])
3283 # Target-specific assembler checks.
3285 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3286 gcc_cv_ld_static_dynamic=no
3287 gcc_cv_ld_static_option='-Bstatic'
3288 gcc_cv_ld_dynamic_option='-Bdynamic'
3289 if test $in_tree_ld = yes ; then
3290 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3291 gcc_cv_ld_static_dynamic=yes
3293 elif test x$gcc_cv_ld != x; then
3294 # Check if linker supports -Bstatic/-Bdynamic option
3295 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3296 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3297 gcc_cv_ld_static_dynamic=yes
3300 # HP-UX ld uses -a flags to select between shared and archive.
3302 if test x"$gnu_ld" = xno; then
3303 gcc_cv_ld_static_dynamic=yes
3304 gcc_cv_ld_static_option="-aarchive_shared"
3305 gcc_cv_ld_dynamic_option="-adefault"
3308 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3310 gcc_cv_ld_static_dynamic=yes
3315 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3316 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3317 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3318 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3319 [Define to the linker option to disable use of shared objects.])
3320 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3321 [Define to the linker option to enable use of shared objects.])
3323 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3325 if test x"$demangler_in_ld" = xyes; then
3326 AC_MSG_CHECKING(linker --demangle support)
3327 gcc_cv_ld_demangle=no
3328 if test $in_tree_ld = yes; then
3329 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3330 gcc_cv_ld_demangle=yes
3332 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3333 # Check if the GNU linker supports --demangle option
3334 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3335 gcc_cv_ld_demangle=yes
3338 if test x"$gcc_cv_ld_demangle" = xyes; then
3339 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3340 [Define if your linker supports --demangle option.])
3342 AC_MSG_RESULT($gcc_cv_ld_demangle)
3345 AC_MSG_CHECKING(linker plugin support)
3347 if test -f liblto_plugin.la; then
3348 save_ld_ver="$ld_ver"
3349 save_ld_vers_major="$ld_vers_major"
3350 save_ld_vers_minor="$ld_vers_minor"
3351 save_ld_is_gold="$ld_is_gold"
3355 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3357 # FIXME: ld_is_gold?
3358 ld_vers_major="$gcc_cv_gld_major_version"
3359 ld_vers_minor="$gcc_cv_gld_minor_version"
3361 # Determine plugin linker version.
3362 # FIXME: Partial duplicate from above, generalize.
3364 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3365 if echo "$ld_ver" | grep GNU > /dev/null; then
3366 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3368 ld_vers=`echo $ld_ver | sed -n \
3369 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3371 ld_vers=`echo $ld_ver | sed -n \
3372 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3374 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3375 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3380 # Determine plugin support.
3381 if echo "$ld_ver" | grep GNU > /dev/null; then
3382 # Require GNU ld or gold 2.21+ for plugin support by default.
3383 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3385 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3386 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3391 ld_ver="$save_ld_ver"
3392 ld_vers_major="$save_ld_vers_major"
3393 ld_vers_minor="$save_ld_vers_minor"
3394 ld_is_gold="$save_ld_is_gold"
3396 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3397 [Define to the level of your linker's plugin support.])
3398 AC_MSG_RESULT($gcc_cv_lto_plugin)
3401 # All TARGET_ABI_OSF targets.
3402 alpha*-*-linux* | alpha*-*-*bsd*)
3403 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3404 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3407 extbl $3, $2, $3 !lituse_bytoff!1
3408 ldq $2, a($29) !literal!1
3409 ldq $4, b($29) !literal!2
3410 ldq_u $3, 0($2) !lituse_base!1
3411 ldq $27, f($29) !literal!5
3412 jsr $26, ($27), f !lituse_jsr!5
3413 ldah $29, 0($26) !gpdisp!3
3414 lda $0, c($29) !gprel
3415 ldah $1, d($29) !gprelhigh
3416 lda $1, d($1) !gprellow
3417 lda $29, 0($29) !gpdisp!3],,
3418 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3419 [Define if your assembler supports explicit relocations.])])
3420 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3421 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3424 ldq $27, a($29) !literal!1
3425 jsr $26, ($27), a !lituse_jsrdirect!1],,
3426 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3427 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3431 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3432 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3433 [-no-mul-bug-abort], [.text],,
3434 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3435 [Define if your assembler supports the -no-mul-bug-abort option.])])
3439 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3440 [.register %g2, #scratch],,
3441 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3442 [Define if your assembler supports .register.])])
3444 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3446 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3447 [Define if your assembler supports -relax option.])])
3449 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3450 gcc_cv_as_sparc_gotdata_op,,
3457 sethi %gdop_hix22(foo), %g1
3458 xor %g1, %gdop_lox10(foo), %g1
3459 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3460 [if test x$gcc_cv_ld != x \
3461 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3462 if test x$gcc_cv_objdump != x; then
3463 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3464 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3465 gcc_cv_as_sparc_gotdata_op=no
3467 gcc_cv_as_sparc_gotdata_op=yes
3472 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3473 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3475 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3476 gcc_cv_as_sparc_ua_pcrel,,
3484 .uaword %r_disp32(foo)],
3485 [if test x$gcc_cv_ld != x \
3486 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3487 gcc_cv_as_sparc_ua_pcrel=yes
3490 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3491 [Define if your assembler and linker support unaligned PC relative relocs.])
3493 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3494 gcc_cv_as_sparc_ua_pcrel_hidden,,
3499 .uaword %r_disp32(foo)
3500 .byte 0x32, 0x33, 0x34
3505 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3506 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3507 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3508 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3509 if $gcc_cv_objdump -R conftest 2> /dev/null \
3510 | grep 'DISP32' > /dev/null 2>&1; then
3513 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3517 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3518 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3519 ]) # unaligned pcrel relocs
3521 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3522 gcc_cv_as_sparc_offsetable_lo10,,
3525 or %g1, %lo(ab) + 12, %g1
3526 or %g1, %lo(ab + 12), %g1],
3527 [if test x$gcc_cv_objdump != x \
3528 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3529 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3530 gcc_cv_as_sparc_offsetable_lo10=yes
3532 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3533 [Define if your assembler supports offsetable %lo().])])
3535 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3536 gcc_cv_as_sparc_fmaf,,
3539 .register %g2, #scratch
3540 .register %g3, #scratch
3542 fmaddd %f0, %f2, %f4, %f6
3543 addxccc %g1, %g2, %g3
3544 fsrl32 %f2, %f4, %f8
3545 fnaddd %f10, %f12, %f14],,
3546 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3547 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3551 i[34567]86-*-* | x86_64-*-*)
3555 # Full C++ conformance when using a shared libstdc++-v3 requires some
3556 # support from the Cygwin DLL, which in more recent versions exports
3557 # wrappers to aid in interposing and redirecting operators new, delete,
3558 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3559 # are configuring for a version of Cygwin that exports the wrappers.
3560 if test x$host = x$target; then
3561 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3563 # Can't check presence of libc functions during cross-compile, so
3564 # we just have to assume we're building for an up-to-date target.
3565 gcc_ac_cygwin_dll_wrappers=yes
3567 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3568 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3569 [Define if you want to generate code by default that assumes that the
3570 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3573 cygwin* | pe | mingw32* | interix*)
3574 # Recent binutils allows the three-operand form of ".comm" on PE. This
3575 # definition is used unconditionally to initialise the default state of
3576 # the target option variable that governs usage of the feature.
3577 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3578 [2,19,52],,[.comm foo,1,32])
3579 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3580 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3581 [Define if your assembler supports specifying the alignment
3582 of objects allocated using the GAS .comm command.])
3583 # Used for DWARF 2 in PE
3584 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3585 gcc_cv_as_ix86_pe_secrel32,
3591 [if test x$gcc_cv_ld != x \
3592 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3593 gcc_cv_as_ix86_pe_secrel32=yes
3596 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3597 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3598 # Test if the assembler supports the extended form of the .section
3599 # directive that specifies section alignment. LTO support uses this,
3600 # but normally only after installation, so we warn but don't fail the
3601 # configure if LTO is enabled but the assembler does not support it.
3602 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3603 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3604 if test x$gcc_cv_as_section_has_align != xyes; then
3605 case ",$enable_languages," in
3607 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3611 # Test if the assembler supports the section flag 'e' for specifying
3612 # an excluded section.
3613 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3617 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3618 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3619 [Define if your assembler supports specifying the section flag e.])
3623 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3624 gcc_cv_as_ix86_filds,,,
3625 [filds mem; fists mem],,
3626 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3627 [Define if your assembler uses filds and fists mnemonics.])])
3629 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3630 gcc_cv_as_ix86_fildq,,,
3631 [fildq mem; fistpq mem],,
3632 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3633 [Define if your assembler uses fildq and fistq mnemonics.])])
3635 gcc_GAS_CHECK_FEATURE([cmov syntax],
3636 gcc_cv_as_ix86_cmov_sun_syntax,,,
3637 [cmovl.l %edx, %eax],,
3638 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3639 [Define if your assembler supports the Sun syntax for cmov.])])
3641 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3642 gcc_cv_as_ix86_ffreep,,,
3644 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3645 [Define if your assembler supports the ffreep mnemonic.])])
3647 gcc_GAS_CHECK_FEATURE([.quad directive],
3648 gcc_cv_as_ix86_quad,,,
3650 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3651 [Define if your assembler supports the .quad directive.])])
3653 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3654 gcc_cv_as_ix86_sahf,,,
3657 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3658 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3660 gcc_GAS_CHECK_FEATURE([hle prefixes],
3661 gcc_cv_as_ix86_hle,,,
3662 [lock xacquire cmpxchg %esi, (%ecx)],,
3663 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3664 [Define if your assembler supports HLE prefixes.])])
3666 gcc_GAS_CHECK_FEATURE([swap suffix],
3667 gcc_cv_as_ix86_swap,,,
3668 [movl.s %esp, %ebp],,
3669 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3670 [Define if your assembler supports the swap suffix.])])
3672 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3673 gcc_cv_as_ix86_diff_sect_delta,,,
3681 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3682 [Define if your assembler supports the subtraction of symbols in different sections.])])
3684 # These two are used unconditionally by i386.[ch]; it is to be defined
3685 # to 1 if the feature is present, 0 otherwise.
3686 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3687 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3693 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3694 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3695 [Define true if the assembler supports '.long foo@GOTOFF'.])
3697 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3698 gcc_cv_as_ix86_rep_lock_prefix,,,
3704 lock addl %edi, (%eax,%esi)
3705 lock orl $0, (%esp)],,
3706 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3707 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3709 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3710 gcc_cv_as_ix86_tlsgdplt,,,
3711 [call tls_gd@tlsgdplt],
3712 [if test x$gcc_cv_ld != x \
3713 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3714 gcc_cv_as_ix86_tlsgdplt=yes
3717 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3718 [Define if your assembler and linker support @tlsgdplt.])])
3720 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3721 gcc_cv_as_ix86_tlsldmplt,,,
3723 call tls_ld@tlsldmplt],
3724 [if test x$gcc_cv_ld != x \
3725 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3726 gcc_cv_as_ix86_tlsldmplt=yes
3729 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3730 [Define if your assembler and linker support @tlsldmplt.])])
3735 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3736 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3738 addl r15 = @ltoffx(x#), gp
3740 ld8.mov r16 = [[r15]], x#],,
3741 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3742 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3748 *-*-aix*) conftest_s=' .machine "pwr5"
3752 gcc_GAS_CHECK_FEATURE([.machine directive support],
3753 gcc_cv_as_machine_directive,,,
3754 [ .machine ppc7400])
3755 if test x$gcc_cv_as_machine_directive != xyes; then
3756 echo "*** This target requires an assembler supporting \".machine\"" >&2
3757 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3758 test x$build = x$target && exit 1
3762 *) conftest_s=' .machine power4
3767 gcc_GAS_CHECK_FEATURE([mfcr field support],
3768 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3770 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3771 [Define if your assembler supports mfcr field.])])
3774 *-*-aix*) conftest_s=' .machine "pwr5"
3777 *) conftest_s=' .machine power5
3782 gcc_GAS_CHECK_FEATURE([popcntb support],
3783 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3785 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3786 [Define if your assembler supports popcntb field.])])
3789 *-*-aix*) conftest_s=' .machine "pwr5x"
3792 *) conftest_s=' .machine power5
3797 gcc_GAS_CHECK_FEATURE([fp round support],
3798 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3800 [AC_DEFINE(HAVE_AS_FPRND, 1,
3801 [Define if your assembler supports fprnd.])])
3804 *-*-aix*) conftest_s=' .machine "pwr6"
3807 *) conftest_s=' .machine power6
3812 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3813 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3815 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3816 [Define if your assembler supports mffgpr and mftgpr.])])
3819 *-*-aix*) conftest_s=' .csect .text[[PR]]
3821 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3825 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3826 *) conftest_s=' .text
3828 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3831 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3832 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3834 [AC_DEFINE(HAVE_AS_REL16, 1,
3835 [Define if your assembler supports R_PPC_REL16 relocs.])])
3838 *-*-aix*) conftest_s=' .machine "pwr6"
3841 *) conftest_s=' .machine power6
3846 gcc_GAS_CHECK_FEATURE([compare bytes support],
3847 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3849 [AC_DEFINE(HAVE_AS_CMPB, 1,
3850 [Define if your assembler supports cmpb.])])
3853 *-*-aix*) conftest_s=' .machine "pwr6"
3856 *) conftest_s=' .machine power6
3861 gcc_GAS_CHECK_FEATURE([decimal float support],
3862 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3864 [AC_DEFINE(HAVE_AS_DFP, 1,
3865 [Define if your assembler supports DFP instructions.])])
3868 *-*-aix*) conftest_s=' .machine "pwr7"
3871 *) conftest_s=' .machine power7
3876 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3877 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3879 [AC_DEFINE(HAVE_AS_VSX, 1,
3880 [Define if your assembler supports VSX instructions.])])
3883 *-*-aix*) conftest_s=' .machine "pwr7"
3886 *) conftest_s=' .machine power7
3891 gcc_GAS_CHECK_FEATURE([popcntd support],
3892 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3894 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3895 [Define if your assembler supports POPCNTD instructions.])])
3898 *-*-aix*) conftest_s=' .machine "pwr8"
3899 .csect .text[[PR]]';;
3900 *) conftest_s=' .machine power8
3904 gcc_GAS_CHECK_FEATURE([power8 support],
3905 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
3907 [AC_DEFINE(HAVE_AS_POWER8, 1,
3908 [Define if your assembler supports POWER8 instructions.])])
3911 *-*-aix*) conftest_s=' .csect .text[[PR]]
3913 *) conftest_s=' .text
3917 gcc_GAS_CHECK_FEATURE([lwsync support],
3918 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3920 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3921 [Define if your assembler supports LWSYNC instructions.])])
3924 *-*-aix*) conftest_s=' .machine "476"
3927 *) conftest_s=' .machine "476"
3932 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3933 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3935 [AC_DEFINE(HAVE_AS_DCI, 1,
3936 [Define if your assembler supports the DCI/ICI instructions.])])
3938 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3939 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3940 [.gnu_attribute 4,1],,
3941 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3942 [Define if your assembler supports .gnu_attribute.])])
3944 gcc_GAS_CHECK_FEATURE([tls marker support],
3945 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3946 [ bl __tls_get_addr(x@tlsgd)],,
3947 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3948 [Define if your assembler supports arg info for __tls_get_addr.])])
3952 gcc_GAS_CHECK_FEATURE([.ref support],
3953 gcc_cv_as_aix_ref, [2,21,0],,
3954 [ .csect stuff[[rw]]
3960 [AC_DEFINE(HAVE_AS_REF, 1,
3961 [Define if your assembler supports .ref])])
3967 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3968 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3969 [ lw $4,%gp_rel(foo)($4)],,
3970 [if test x$target_cpu_default = x
3971 then target_cpu_default=MASK_EXPLICIT_RELOCS
3972 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3974 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3975 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3976 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3977 [Define if the assembler understands -mno-shared.])])
3979 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3980 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3981 [.gnu_attribute 4,1],,
3982 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3983 [Define if your assembler supports .gnu_attribute.])])
3985 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3986 gcc_cv_as_mips_dtprelword, [2,18,0],,
3987 [.section .tdata,"awT",@progbits
3991 .dtprelword x+0x8000],,
3992 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3993 [Define if your assembler supports .dtprelword.])])
3995 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3996 gcc_cv_as_mips_dspr1_mult,,,
4006 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4007 [Define if your assembler supports DSPR1 mult.])])
4009 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4010 gcc_cv_as_ld_jalr_reloc=no
4011 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4012 if test $in_tree_ld = yes ; then
4013 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4014 && test $in_tree_ld_is_elf = yes; then
4015 gcc_cv_as_ld_jalr_reloc=yes
4017 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4018 echo ' .ent x' > conftest.s
4019 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
4020 echo ' ld $25,%call16(y)($28)' >> conftest.s
4021 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4022 echo '1: jalr $25' >> conftest.s
4023 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4024 echo '1: jalr $25' >> conftest.s
4025 echo ' .end x' >> conftest.s
4026 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4027 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4028 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4029 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4030 gcc_cv_as_ld_jalr_reloc=yes
4036 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4037 if test x$target_cpu_default = x; then
4038 target_cpu_default=MASK_RELAX_PIC_CALLS
4040 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4043 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4045 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4046 [gcc_cv_ld_mips_personality_relaxation],
4047 [gcc_cv_ld_mips_personality_relaxation=no
4048 if test $in_tree_ld = yes ; then
4049 if test "$gcc_cv_gld_major_version" -eq 2 \
4050 -a "$gcc_cv_gld_minor_version" -ge 21 \
4051 -o "$gcc_cv_gld_major_version" -gt 2; then
4052 gcc_cv_ld_mips_personality_relaxation=yes
4054 elif test x$gcc_cv_as != x \
4055 -a x$gcc_cv_ld != x \
4056 -a x$gcc_cv_readelf != x ; then
4057 cat > conftest.s <<EOF
4059 .cfi_personality 0x80,indirect_ptr
4066 .section .data,"aw",@progbits
4070 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4071 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4072 if $gcc_cv_readelf -d conftest 2>&1 \
4073 | grep TEXTREL > /dev/null 2>&1; then
4075 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4076 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4079 gcc_cv_ld_mips_personality_relaxation=yes
4083 rm -f conftest.s conftest.o conftest])
4084 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4085 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4086 [Define if your linker can relax absolute .eh_frame personality
4087 pointers into PC-relative form.])
4092 # Mips and HP-UX need the GNU assembler.
4093 # Linux on IA64 might be able to use the Intel assembler.
4096 mips*-*-* | *-*-hpux* )
4097 if test x$gas_flag = xyes \
4098 || test x"$host" != x"$build" \
4099 || test ! -x "$gcc_cv_as" \
4100 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4103 echo "*** This configuration requires the GNU assembler" >&2
4109 # ??? Not all targets support dwarf2 debug_line, even within a version
4110 # of gas. Moreover, we need to emit a valid instruction to trigger any
4111 # info to the output file. So, as supported targets are added to gas 2.11,
4112 # add some instruction here to (also) show we expect this might work.
4113 # ??? Once 2.11 is released, probably need to add first known working
4114 # version to the per-target configury.
4116 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4117 | pa | rs6000 | score | sparc | spu | tilegx | tilepro | xstormy16 | xtensa)
4127 if test x"$insn" != x; then
4129 .file 1 \"conftest.s\"
4132 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4133 gcc_cv_as_dwarf2_debug_line,
4134 [elf,2,11,0],, [$conftest_s],
4135 [if test x$gcc_cv_objdump != x \
4136 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4137 | grep debug_line > /dev/null 2>&1; then
4138 gcc_cv_as_dwarf2_debug_line=yes
4141 # The .debug_line file table must be in the exact order that
4142 # we specified the files, since these indices are also used
4143 # by DW_AT_decl_file. Approximate this test by testing if
4144 # the assembler bitches if the same index is assigned twice.
4145 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4146 gcc_cv_as_dwarf2_file_buggy,,,
4150 if test $gcc_cv_as_dwarf2_debug_line = yes \
4151 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4152 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4153 [Define if your assembler supports dwarf2 .file/.loc directives,
4154 and preserves file table indices exactly as given.])
4157 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4158 gcc_cv_as_gdwarf2_flag,
4159 [elf,2,11,0], [--gdwarf2], [$insn],,
4160 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4161 [Define if your assembler supports the --gdwarf2 option.])])
4163 gcc_GAS_CHECK_FEATURE([--gstabs option],
4164 gcc_cv_as_gstabs_flag,
4165 [elf,2,11,0], [--gstabs], [$insn],
4166 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4167 # and warns about it, but still exits successfully. So check for
4169 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4171 else gcc_cv_as_gstabs_flag=yes
4173 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4174 [Define if your assembler supports the --gstabs option.])])
4176 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4177 gcc_cv_as_debug_prefix_map_flag,
4178 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4179 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4180 [Define if your assembler supports the --debug-prefix-map option.])])
4183 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4186 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4187 [Define if your assembler supports .lcomm with an alignment field.])])
4189 AC_ARG_ENABLE(gnu-unique-object,
4190 [AS_HELP_STRING([--enable-gnu-unique-object],
4191 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4192 [case $enable_gnu_unique_object in
4194 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4195 Valid choices are 'yes' and 'no'.]) ;;
4197 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4199 [.type foo, '$target_type_format_char'gnu_unique_object],,
4200 # We need to unquote above to to use the definition from config.gcc.
4201 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4202 [[if test x$host = x$build -a x$host = x$target &&
4203 ldd --version 2>/dev/null &&
4204 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4205 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4206 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4207 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4208 if test "$glibcnum" -ge 2011 ; then
4209 enable_gnu_unique_object=yes
4212 if test x$enable_gnu_unique_object = xyes; then
4213 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4214 [Define if your assembler supports @gnu_unique_object.])
4217 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4218 [gcc_cv_as_line_zero],
4219 [gcc_cv_as_line_zero=no
4220 if test $in_tree_gas = yes; then
4221 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4222 elif test "x$gcc_cv_as" != x; then
4223 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4224 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4225 test "x`cat conftest.out`" = x
4227 gcc_cv_as_line_zero=yes
4229 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4230 cat conftest.s >&AS_MESSAGE_LOG_FD
4231 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4232 cat conftest.out >&AS_MESSAGE_LOG_FD
4234 rm -f conftest.o conftest.s conftest.out
4236 if test "x$gcc_cv_as_line_zero" = xyes; then
4237 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4238 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4241 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4242 gcc_cv_ld_eh_frame_hdr=no
4243 if test $in_tree_ld = yes ; then
4244 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4245 && test $in_tree_ld_is_elf = yes; then
4246 gcc_cv_ld_eh_frame_hdr=yes
4248 elif test x$gcc_cv_ld != x; then
4249 if echo "$ld_ver" | grep GNU > /dev/null; then
4250 # Check if linker supports --eh-frame-hdr option
4251 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4252 gcc_cv_ld_eh_frame_hdr=yes
4257 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4258 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4259 gcc_cv_ld_eh_frame_hdr=yes
4265 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4266 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4267 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4268 [Define if your linker supports .eh_frame_hdr.])
4270 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4272 AC_MSG_CHECKING(linker position independent executable support)
4274 if test $in_tree_ld = yes ; then
4275 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4276 && test $in_tree_ld_is_elf = yes; then
4279 elif test x$gcc_cv_ld != x; then
4280 # Check if linker supports -pie option
4281 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4285 if test x"$gcc_cv_ld_pie" = xyes; then
4286 AC_DEFINE(HAVE_LD_PIE, 1,
4287 [Define if your linker supports -pie option.])
4289 AC_MSG_RESULT($gcc_cv_ld_pie)
4291 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4292 gcc_cv_ld_eh_gc_sections=no
4293 if test $in_tree_ld = yes ; then
4294 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4295 && test $in_tree_ld_is_elf = yes; then
4296 gcc_cv_ld_eh_gc_sections=yes
4298 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4299 cat > conftest.s <<EOF
4302 .type _start, @function
4305 .size _start, .-_start
4306 .section .text.foo,"ax",@progbits
4307 .type foo, @function
4311 .section .gcc_except_table.foo,"a",@progbits
4314 .section .eh_frame,"a",@progbits
4317 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4318 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4319 | grep "gc-sections option ignored" > /dev/null; then
4320 gcc_cv_ld_eh_gc_sections=no
4321 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4322 | grep gcc_except_table > /dev/null; then
4323 gcc_cv_ld_eh_gc_sections=yes
4324 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4325 if test x$gcc_cv_as_comdat_group != xyes; then
4326 gcc_cv_ld_eh_gc_sections=no
4327 cat > conftest.s <<EOF
4330 .type _start, @function
4333 .size _start, .-_start
4334 .section .gnu.linkonce.t.foo,"ax",@progbits
4335 .type foo, @function
4339 .section .gcc_except_table.foo,"a",@progbits
4342 .section .eh_frame,"a",@progbits
4345 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4346 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4347 | grep "gc-sections option ignored" > /dev/null; then
4348 gcc_cv_ld_eh_gc_sections=no
4349 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4350 | grep gcc_except_table > /dev/null; then
4351 gcc_cv_ld_eh_gc_sections=yes
4357 rm -f conftest.s conftest.o conftest
4361 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4362 gcc_cv_ld_eh_gc_sections=no
4365 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4366 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4367 [Define if your linker supports garbage collection of
4368 sections in presence of EH frames.])
4370 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4372 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4373 gcc_cv_ld_eh_gc_sections_bug=no
4374 if test $in_tree_ld = yes ; then
4375 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4376 && test $in_tree_ld_is_elf = yes; then
4377 gcc_cv_ld_eh_gc_sections_bug=yes
4379 elif test x$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
4380 gcc_cv_ld_eh_gc_sections_bug=yes
4381 cat > conftest.s <<EOF
4384 .type _start, @function
4387 .size _start, .-_start
4388 .section .text.startup.foo,"ax",@progbits
4389 .type foo, @function
4393 .section .gcc_except_table.foo,"a",@progbits
4396 .section .eh_frame,"a",@progbits
4399 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4400 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4401 | grep "gc-sections option ignored" > /dev/null; then
4403 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4404 | grep gcc_except_table > /dev/null; then
4405 gcc_cv_ld_eh_gc_sections_bug=no
4408 rm -f conftest.s conftest.o conftest
4410 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4411 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4412 [Define if your linker has buggy garbage collection of
4413 sections support when .text.startup.foo like sections are used.])
4415 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4421 AC_CACHE_CHECK(linker --as-needed support,
4422 gcc_cv_ld_as_needed,
4423 [gcc_cv_ld_as_needed=no
4424 if test $in_tree_ld = yes ; then
4425 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4426 && test $in_tree_ld_is_elf = yes; then
4427 gcc_cv_ld_as_needed=yes
4429 elif test x$gcc_cv_ld != x; then
4430 # Check if linker supports --as-needed and --no-as-needed options
4431 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4432 gcc_cv_ld_as_needed=yes
4436 if test x"$gcc_cv_ld_as_needed" = xyes; then
4437 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4438 [Define if your linker supports --as-needed and --no-as-needed options.])
4441 case "$target:$tm_file" in
4442 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4445 emul_name="-melf64ppc"
4448 emul_name="-melf64ppc_fbsd"
4451 AC_CACHE_CHECK(linker support for omitting dot symbols,
4452 gcc_cv_ld_no_dot_syms,
4453 [gcc_cv_ld_no_dot_syms=no
4454 if test x"$ld_is_gold" = xyes; then
4455 gcc_cv_ld_no_dot_syms=yes
4456 elif test $in_tree_ld = yes ; then
4457 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4458 gcc_cv_ld_no_dot_syms=yes
4460 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4461 cat > conftest1.s <<EOF
4465 cat > conftest2.s <<EOF
4466 .section ".opd","aw"
4471 .quad .LEfoo,.TOC.@tocbase,0
4477 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4478 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4479 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4480 gcc_cv_ld_no_dot_syms=yes
4482 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4485 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4486 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4487 [Define if your PowerPC64 linker only needs function descriptor syms.])
4490 AC_CACHE_CHECK(linker large toc support,
4491 gcc_cv_ld_large_toc,
4492 [gcc_cv_ld_large_toc=no
4493 if test x"$ld_is_gold" = xyes; then
4494 gcc_cv_ld_large_toc=yes
4495 elif test $in_tree_ld = yes ; then
4496 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4497 gcc_cv_ld_large_toc=yes
4499 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4500 cat > conftest.s <<EOF
4501 .section ".tbss","awT",@nobits
4507 addis 9,13,ie0@got@tprel@ha
4508 ld 9,ie0@got@tprel@l(9)
4510 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4511 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4512 gcc_cv_ld_large_toc=yes
4514 rm -f conftest conftest.o conftest.s
4517 if test x"$gcc_cv_ld_large_toc" = xyes; then
4518 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4519 [Define if your PowerPC64 linker supports a large TOC.])
4526 AC_CACHE_CHECK(linker large toc support,
4527 gcc_cv_ld_large_toc,
4528 [gcc_cv_ld_large_toc=no
4529 if test x$gcc_cv_as != x ; then
4530 cat > conftest.s <<EOF
4540 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
4541 gcc_cv_ld_large_toc=yes
4543 rm -f conftest conftest.o conftest.s
4546 if test x"$gcc_cv_ld_large_toc" = xyes; then
4547 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4548 [Define if your AIX linker supports a large TOC.])
4553 AC_CACHE_CHECK(linker --build-id support,
4555 [gcc_cv_ld_buildid=no
4556 if test $in_tree_ld = yes ; then
4557 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4558 "$gcc_cv_gld_minor_version" -ge 18 -o \
4559 "$gcc_cv_gld_major_version" -gt 2 \
4560 && test $in_tree_ld_is_elf = yes; then
4561 gcc_cv_ld_buildid=yes
4563 elif test x$gcc_cv_ld != x; then
4564 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4565 gcc_cv_ld_buildid=yes
4568 if test x"$gcc_cv_ld_buildid" = xyes; then
4569 AC_DEFINE(HAVE_LD_BUILDID, 1,
4570 [Define if your linker supports --build-id.])
4573 AC_ARG_ENABLE(linker-build-id,
4574 [AS_HELP_STRING([--enable-linker-build-id],
4575 [compiler will always pass --build-id to linker])],
4577 enable_linker_build_id=no)
4579 if test x"$enable_linker_build_id" = xyes; then
4580 if test x"$gcc_cv_ld_buildid" = xyes; then
4581 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4582 [Define if gcc should always pass --build-id to linker.])
4584 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4588 # In binutils 2.21, GNU ld gained support for new emulations fully
4589 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4590 AC_CACHE_CHECK(linker *_sol2 emulation support,
4591 gcc_cv_ld_sol2_emulation,
4592 [gcc_cv_ld_sol2_emulation=no
4593 if test $in_tree_ld = yes ; then
4594 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4595 "$gcc_cv_gld_minor_version" -ge 21 -o \
4596 "$gcc_cv_gld_major_version" -gt 2 \
4597 && test $in_tree_ld_is_elf = yes; then
4598 gcc_cv_ld_sol2_emulation=yes
4600 elif test x$gcc_cv_ld != x; then
4601 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4602 grep _sol2 > /dev/null; then
4603 gcc_cv_ld_sol2_emulation=yes
4606 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4607 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4608 [Define if your linker supports the *_sol2 emulations.])
4611 AC_CACHE_CHECK(linker --sysroot support,
4613 [gcc_cv_ld_sysroot=no
4614 if test $in_tree_ld = yes ; then
4615 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4616 gcc_cv_ld_sysroot=yes
4618 elif test x$gcc_cv_ld != x; then
4619 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4620 gcc_cv_ld_sysroot=yes
4623 if test x"$gcc_cv_ld_sysroot" = xyes; then
4624 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4625 [Define if your linker supports --sysroot.])
4628 if test x$with_sysroot = x && test x$host = x$target \
4629 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4630 && test "$prefix" != "NONE"; then
4631 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4632 [Define to PREFIX/include if cpp should also search that directory.])
4635 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4636 if test "x$with_headers" != x; then
4637 target_header_dir=$with_headers
4638 elif test "x$with_sysroot" = x; then
4639 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
4640 elif test "x$with_build_sysroot" != "x"; then
4641 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4642 elif test "x$with_sysroot" = xyes; then
4643 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4645 target_header_dir="${with_sysroot}${native_system_header_dir}"
4648 target_header_dir=${native_system_header_dir}
4651 # Test for stack protector support in target C library.
4652 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4653 gcc_cv_libc_provides_ssp,
4654 [gcc_cv_libc_provides_ssp=no
4656 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4657 [# glibc 2.4 and later provides __stack_chk_fail and
4658 # either __stack_chk_guard, or TLS access to stack guard canary.
4659 if test -f $target_header_dir/features.h \
4660 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4661 $target_header_dir/features.h > /dev/null; then
4662 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4663 $target_header_dir/features.h > /dev/null; then
4664 gcc_cv_libc_provides_ssp=yes
4665 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4666 $target_header_dir/features.h > /dev/null \
4667 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4668 $target_header_dir/features.h > /dev/null; then
4669 gcc_cv_libc_provides_ssp=yes
4670 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4671 $target_header_dir/features.h > /dev/null && \
4672 test -f $target_header_dir/bits/uClibc_config.h && \
4673 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4674 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4675 gcc_cv_libc_provides_ssp=yes
4677 # all versions of Bionic support stack protector
4678 elif test -f $target_header_dir/sys/cdefs.h \
4679 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
4680 $target_header_dir/sys/cdefs.h > /dev/null; then
4681 gcc_cv_libc_provides_ssp=yes
4685 # Avoid complicated tests (see
4686 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4687 # simply assert that glibc does provide this, which is true for all
4688 # realistically usable GNU/Hurd configurations.
4689 gcc_cv_libc_provides_ssp=yes;;
4690 *-*-darwin* | *-*-freebsd*)
4691 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4692 [echo "no __stack_chk_fail on this target"])
4694 *) gcc_cv_libc_provides_ssp=no ;;
4697 if test x$gcc_cv_libc_provides_ssp = xyes; then
4698 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4699 [Define if your target C library provides stack protector support])
4702 # Test for <sys/sdt.h> on the target.
4703 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4704 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4706 if test -f $target_header_dir/sys/sdt.h; then
4708 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4709 [Define if your target C library provides sys/sdt.h])
4711 AC_MSG_RESULT($have_sys_sdt_h)
4713 # Check if TFmode long double should be used by default or not.
4714 # Some glibc targets used DFmode long double, but with glibc 2.4
4715 # and later they can use TFmode.
4717 powerpc*-*-linux* | \
4721 AC_ARG_WITH(long-double-128,
4722 [AS_HELP_STRING([--with-long-double-128],
4723 [use 128-bit long double by default])],
4724 gcc_cv_target_ldbl128="$with_long_double_128",
4725 [[gcc_cv_target_ldbl128=no
4726 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4727 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4728 && gcc_cv_target_ldbl128=yes
4732 if test x$gcc_cv_target_ldbl128 = xyes; then
4733 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4734 [Define if TFmode long double should be the default])
4737 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4738 gcc_cv_target_dl_iterate_phdr=unknown
4740 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
4741 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
4742 # libdl there, both complicating its use and breaking compatibility
4743 # between Solaris 10 updates.
4744 *-*-solaris2.1[[1-9]]*)
4745 # <link.h> needs both a dl_iterate_phdr declaration and support for
4746 # compilation with largefile support.
4747 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4748 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4749 gcc_cv_target_dl_iterate_phdr=yes
4751 gcc_cv_target_dl_iterate_phdr=no
4755 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4756 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4757 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4758 [Define if your target C library provides the `dl_iterate_phdr' function.])
4760 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4762 # Find out what GC implementation we want, or may, use.
4764 [AS_HELP_STRING([--with-gc={page,zone}],
4765 [choose the garbage collection mechanism to use
4766 with the compiler])],
4773 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4776 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4781 echo "Using $GGC for garbage collection."
4783 # Libraries to use on the host. This will normally be set by the top
4784 # level Makefile. Here we simply capture the value for our Makefile.
4785 if test -z "${HOST_LIBS+set}"; then
4790 # Use the system's zlib library.
4792 zlibinc="-I\$(srcdir)/../zlib"
4793 AC_ARG_WITH(system-zlib,
4794 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4801 dnl Very limited version of automake's enable-maintainer-mode
4803 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4804 dnl maintainer-mode is disabled by default
4805 AC_ARG_ENABLE(maintainer-mode,
4806 [AS_HELP_STRING([--enable-maintainer-mode],
4807 [enable make rules and dependencies not useful
4808 (and sometimes confusing) to the casual installer])],
4809 maintainer_mode=$enableval,
4812 AC_MSG_RESULT($maintainer_mode)
4814 if test "$maintainer_mode" = "yes"; then
4825 # Make empty files to contain the specs and options for each language.
4826 # Then add #include lines to for a compiler that has specs and/or options.
4832 # These (without "all_") are set in each config-lang.in.
4833 # `language' must be a single word so is spelled singularly.
4836 all_outputs='Makefile'
4837 # List of language makefile fragments.
4839 # Additional files for gengtype
4840 all_gtfiles="$target_gtfiles"
4842 # These are the languages that are set in --enable-languages,
4843 # and are available in the GCC tree.
4844 all_selected_languages=
4846 # Add the language fragments.
4847 # Languages are added via two mechanisms. Some information must be
4848 # recorded in makefile variables, these are defined in config-lang.in.
4849 # We accumulate them and plug them into the main Makefile.
4850 # The other mechanism is a set of hooks for each of the main targets
4851 # like `clean', `install', etc.
4853 language_hooks="Make-hooks"
4855 for lang in ${srcdir}/*/config-lang.in
4858 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4860 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4861 if test "x$lang_alias" = x
4863 echo "$lang doesn't set \$language." 1>&2
4866 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4867 subdirs="$subdirs $subdir"
4869 # $gcc_subdir is where the gcc integration files are to be found
4870 # for a language, both for internal compiler purposes (compiler
4871 # sources implementing front-end to GCC tree converters), and for
4872 # build infrastructure purposes (Make-lang.in, etc.)
4874 # This will be <subdir> (relative to $srcdir) if a line like
4875 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4876 # is found in <langdir>/config-lang.in, and will remain <langdir>
4879 # Except for the language alias (fetched above), the regular
4880 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4881 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4882 # only this and the language alias.
4884 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4885 if [ "$gcc_subdir" = "" ]; then
4886 gcc_subdir="$subdir"
4889 case ",$enable_languages," in
4891 all_selected_languages="$all_selected_languages $lang_alias"
4892 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4893 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4905 . ${srcdir}/$gcc_subdir/config-lang.in
4906 if test "x$language" = x
4908 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4913 case ",$enable_languages," in
4916 for i in $subdir_requires; do
4917 test -f "${srcdir}/$i/config-lang.in" && continue
4925 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4926 if test -f $srcdir/$gcc_subdir/lang.opt; then
4927 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4928 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4930 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4931 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4933 all_languages="$all_languages $language"
4934 all_compilers="$all_compilers $compilers"
4935 all_outputs="$all_outputs $outputs"
4936 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4937 case ",$enable_languages," in
4939 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4941 AC_SUBST(enable_lto)
4948 for language in $all_selected_languages
4950 check_languages="$check_languages check-$language"
4953 # We link each language in with a set of hooks, reached indirectly via
4954 # lang.${target}. Only do so for selected languages.
4958 target_list="all.cross start.encap rest.encap tags \
4959 install-common install-man install-info install-pdf install-html dvi \
4960 pdf html uninstall info man srcextra srcman srcinfo \
4961 mostlyclean clean distclean maintainer-clean install-plugin"
4963 for t in $target_list
4966 for lang in $all_selected_languages
4970 echo "lang.$t: $x" >> Make-hooks
4974 # Option include files
4977 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4978 option_includes="option-includes.mk"
4979 AC_SUBST_FILE(option_includes)
4987 echo "dir ." > .gdbinit
4988 echo "dir ${srcdir}" >> .gdbinit
4989 if test x$gdb_needs_out_file_path = xyes
4991 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4993 if test "x$subdirs" != x; then
4996 echo "dir ${srcdir}/$s" >> .gdbinit
4999 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5001 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5002 AC_SUBST(gcc_tooldir)
5005 # Find a directory in which to install a shared libgcc.
5007 AC_ARG_ENABLE(version-specific-runtime-libs,
5008 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5009 [specify that runtime libraries should be
5010 installed in a compiler-specific directory])])
5012 # Substitute configuration variables
5015 AC_SUBST(all_compilers)
5016 AC_SUBST(all_gtfiles)
5017 AC_SUBST(all_lang_makefrags)
5018 AC_SUBST(all_languages)
5019 AC_SUBST(all_selected_languages)
5020 AC_SUBST(build_exeext)
5021 AC_SUBST(build_install_headers_dir)
5022 AC_SUBST(build_xm_file_list)
5023 AC_SUBST(build_xm_include_list)
5024 AC_SUBST(build_xm_defines)
5025 AC_SUBST(build_file_translate)
5026 AC_SUBST(check_languages)
5027 AC_SUBST(cpp_install_dir)
5028 AC_SUBST(xmake_file)
5029 AC_SUBST(tmake_file)
5030 AC_SUBST(TM_ENDIAN_CONFIG)
5031 AC_SUBST(TM_MULTILIB_CONFIG)
5032 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5033 AC_SUBST(extra_gcc_objs)
5034 AC_SUBST(user_headers_inc_next_pre)
5035 AC_SUBST(user_headers_inc_next_post)
5036 AC_SUBST(extra_headers_list)
5037 AC_SUBST(extra_objs)
5038 AC_SUBST(extra_programs)
5039 AC_SUBST(float_h_file)
5040 AC_SUBST(gcc_config_arguments)
5041 AC_SUBST(gcc_gxx_include_dir)
5042 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5043 AC_SUBST(host_exeext)
5044 AC_SUBST(host_xm_file_list)
5045 AC_SUBST(host_xm_include_list)
5046 AC_SUBST(host_xm_defines)
5047 AC_SUBST(out_host_hook_obj)
5049 AC_SUBST(lang_opt_files)
5050 AC_SUBST(lang_specs_files)
5051 AC_SUBST(lang_tree_files)
5052 AC_SUBST(local_prefix)
5054 AC_SUBST(objc_boehm_gc)
5056 AC_SUBST(out_object_file)
5057 AC_SUBST(common_out_file)
5058 AC_SUBST(common_out_object_file)
5059 AC_SUBST(tm_file_list)
5060 AC_SUBST(tm_include_list)
5061 AC_SUBST(tm_defines)
5062 AC_SUBST(tm_p_file_list)
5063 AC_SUBST(tm_p_include_list)
5064 AC_SUBST(xm_file_list)
5065 AC_SUBST(xm_include_list)
5066 AC_SUBST(xm_defines)
5067 AC_SUBST(use_gcc_stdint)
5068 AC_SUBST(c_target_objs)
5069 AC_SUBST(cxx_target_objs)
5070 AC_SUBST(fortran_target_objs)
5071 AC_SUBST(target_cpu_default)
5073 AC_SUBST_FILE(language_hooks)
5076 if test x${build} = x${host} ; then
5077 if test x${host} = x${target} ; then
5078 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5080 echo "Links are now set up to build a cross-compiler" 1>&2
5081 echo " from ${host} to ${target}." 1>&2
5084 if test x${host} = x${target} ; then
5085 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5086 echo " for ${target}." 1>&2
5088 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5089 echo " from ${host} to ${target}." 1>&2
5093 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5094 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5096 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5097 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5099 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5100 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5101 if test "x${CLOOGLIBS}" != "x" ; then
5102 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5105 # Check for plugin support
5106 AC_ARG_ENABLE(plugin,
5107 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5108 enable_plugin=$enableval,
5109 enable_plugin=yes; default_plugin=yes)
5115 if test x$build = x$host; then
5116 export_sym_check="nm${exeext} -g"
5117 elif test x$host = x$target; then
5118 export_sym_check="$gcc_cv_nm -g"
5124 if test x$build = x$host; then
5125 export_sym_check="objdump${exeext} -T"
5126 elif test x$host = x$target; then
5127 export_sym_check="$gcc_cv_objdump -T"
5134 if test x"$enable_plugin" = x"yes"; then
5136 AC_MSG_CHECKING([for exported symbols])
5137 if test "x$export_sym_check" != x; then
5138 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5139 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
5140 if $export_sym_check conftest | grep foobar > /dev/null; then
5141 : # No need to use a flag
5142 AC_MSG_RESULT([yes])
5144 AC_MSG_RESULT([yes])
5145 AC_MSG_CHECKING([for -rdynamic])
5146 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
5147 if $export_sym_check conftest | grep foobar > /dev/null; then
5149 pluginlibs="-rdynamic"
5154 AC_MSG_RESULT([$plugin_rdynamic])
5157 AC_MSG_RESULT([unable to check])
5162 AC_SEARCH_LIBS([dlopen], [dl])
5163 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5164 pluginlibs="$pluginlibs -ldl"
5168 # Check that we can build shared objects with -fPIC -shared
5169 saved_LDFLAGS="$LDFLAGS"
5170 saved_CFLAGS="$CFLAGS"
5173 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5174 CFLAGS="$CFLAGS -fPIC"
5175 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5178 CFLAGS="$CFLAGS -fPIC"
5179 LDFLAGS="$LDFLAGS -fPIC -shared"
5182 AC_MSG_CHECKING([for -fPIC -shared])
5184 [extern int X;],[return X == 0;],
5185 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5186 [AC_MSG_RESULT([no]); have_pic_shared=no])
5187 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5191 LDFLAGS="$saved_LDFLAGS"
5192 CFLAGS="$saved_CFLAGS"
5194 # If plugin support had been requested but not available, fail.
5195 if test x"$enable_plugin" = x"no" ; then
5196 if test x"$default_plugin" != x"yes"; then
5198 Building GCC with plugin support requires a host that supports
5199 -fPIC, -shared, -ldl and -rdynamic.])
5204 AC_SUBST(pluginlibs)
5205 AC_SUBST(enable_plugin)
5206 if test x"$enable_plugin" = x"yes"; then
5207 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5211 AC_ARG_ENABLE(libquadmath-support,
5212 [AS_HELP_STRING([--disable-libquadmath-support],
5213 [disable libquadmath support for Fortran])],
5214 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5215 ENABLE_LIBQUADMATH_SUPPORT=yes)
5216 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5217 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5218 [Define to 1 to enable libquadmath support])
5222 # Specify what hash style to use by default.
5223 AC_ARG_WITH([linker-hash-style],
5224 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5225 [specify the linker hash style])],
5226 [case x"$withval" in
5228 LINKER_HASH_STYLE=sysv
5231 LINKER_HASH_STYLE=gnu
5234 LINKER_HASH_STYLE=both
5237 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5240 [LINKER_HASH_STYLE=''])
5241 if test x"${LINKER_HASH_STYLE}" != x; then
5242 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5243 [The linker hash style])
5246 # Configure the subdirectories
5247 # AC_CONFIG_SUBDIRS($subdirs)
5249 # Create the Makefile
5250 # and configure language subdirectories
5251 AC_CONFIG_FILES($all_outputs)
5253 AC_CONFIG_COMMANDS([default],
5255 case ${CONFIG_HEADERS} in
5256 *auto-host.h:config.in*)
5259 # Make sure all the subdirs exist.
5260 for d in $subdirs doc build common c-family
5262 test -d $d || mkdir $d
5265 [subdirs='$subdirs'])