2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2013 Free Software Foundation, Inc.
6 #This file is part of GCC.
8 #GCC is free software; you can redistribute it and/or modify it under
9 #the terms of the GNU General Public License as published by the Free
10 #Software Foundation; either version 3, or (at your option) any later
13 #GCC is distributed in the hope that it will be useful, but WITHOUT
14 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 #You should have received a copy of the GNU General Public License
19 #along with GCC; see the file COPYING3. If not see
20 #<http://www.gnu.org/licenses/>.
22 # --------------------------------
23 # Initialization and sanity checks
24 # --------------------------------
28 AC_CONFIG_SRCDIR(tree.c)
29 AC_CONFIG_HEADER(auto-host.h:config.in)
31 gcc_version=`cat $srcdir/BASE-VER`
33 # Determine the host, build, and target systems
38 # Determine the noncanonical target name, for directory use.
39 ACX_NONCANONICAL_TARGET
41 # Determine the target- and build-specific subdirectories
44 # Set program_transform_name
47 # Check for bogus environment variables.
48 # Test if LIBRARY_PATH contains the notation for the current directory
49 # since this would lead to problems installing/building glibc.
50 # LIBRARY_PATH contains the current directory if one of the following
52 # - one of the terminals (":" and ";") is the first or last sign
53 # - two terminals occur directly after each other
54 # - the path contains an element with a dot in it
55 AC_MSG_CHECKING(LIBRARY_PATH variable)
57 case ${LIBRARY_PATH} in
58 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
59 library_path_setting="contains current directory"
62 library_path_setting="ok"
66 AC_MSG_RESULT($library_path_setting)
67 if test "$library_path_setting" != "ok"; then
69 *** LIBRARY_PATH shouldn't contain the current directory when
70 *** building gcc. Please change the environment variable
71 *** and run configure again.])
74 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
75 # since this would lead to problems installing/building glibc.
76 # GCC_EXEC_PREFIX contains the current directory if one of the following
78 # - one of the terminals (":" and ";") is the first or last sign
79 # - two terminals occur directly after each other
80 # - the path contains an element with a dot in it
81 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
83 case ${GCC_EXEC_PREFIX} in
84 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
85 gcc_exec_prefix_setting="contains current directory"
88 gcc_exec_prefix_setting="ok"
92 AC_MSG_RESULT($gcc_exec_prefix_setting)
93 if test "$gcc_exec_prefix_setting" != "ok"; then
95 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
96 *** building gcc. Please change the environment variable
97 *** and run configure again.])
104 # Specify the local prefix
106 AC_ARG_WITH(local-prefix,
107 [AS_HELP_STRING([--with-local-prefix=DIR],
108 [specifies directory to put local include])],
109 [case "${withval}" in
110 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
112 *) local_prefix=$with_local_prefix ;;
115 # Default local prefix if it is empty
116 if test x$local_prefix = x; then
117 local_prefix=/usr/local
120 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
121 # passed in by the toplevel make and thus we'd get different behavior
122 # depending on where we built the sources.
124 # Specify the g++ header file directory
125 AC_ARG_WITH(gxx-include-dir,
126 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
127 [specifies directory to put g++ header files])],
128 [case "${withval}" in
129 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
131 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
134 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
135 if test x${gcc_gxx_include_dir} = x; then
136 if test x${enable_version_specific_runtime_libs} = xyes; then
137 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 libstdcxx_incdir='include/c++/$(version)'
140 if test x$host != x$target; then
141 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
143 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
147 gcc_gxx_include_dir_add_sysroot=0
148 if test "${with_sysroot+set}" = set; then
149 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
150 if test "${gcc_gxx_without_sysroot}"; then
151 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
152 gcc_gxx_include_dir_add_sysroot=1
156 AC_ARG_WITH(cpp_install_dir,
157 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
158 [install the user visible C preprocessor in DIR
159 (relative to PREFIX) as well as PREFIX/bin])],
160 [if test x$withval = xyes; then
161 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
162 elif test x$withval != xno; then
163 cpp_install_dir=$withval
166 # We would like to our source tree to be readonly. However when releases or
167 # pre-releases are generated, the flex/bison generated files as well as the
168 # various formats of manuals need to be included along with the rest of the
169 # sources. Therefore we have --enable-generated-files-in-srcdir to do
172 AC_MSG_CHECKING([whether to place generated files in the source directory])
173 dnl generated-files-in-srcdir is disabled by default
174 AC_ARG_ENABLE(generated-files-in-srcdir,
175 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
176 [put copies of generated files in source dir
177 intended for creating source tarballs for users
178 without texinfo bison or flex])],
179 generated_files_in_srcdir=$enableval,
180 generated_files_in_srcdir=no)
182 AC_MSG_RESULT($generated_files_in_srcdir)
184 if test "$generated_files_in_srcdir" = "yes"; then
191 # -------------------
192 # Find default linker
193 # -------------------
197 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
198 gnu_ld_flag="$with_gnu_ld",
201 # With pre-defined ld
203 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
204 DEFAULT_LINKER="$with_ld")
205 if test x"${DEFAULT_LINKER+set}" = x"set"; then
206 if test ! -x "$DEFAULT_LINKER"; then
207 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
208 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
211 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
212 [Define to enable the use of a default linker.])
215 AC_MSG_CHECKING([whether a default linker was specified])
216 if test x"${DEFAULT_LINKER+set}" = x"set"; then
217 if test x"$gnu_ld_flag" = x"no"; then
218 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
220 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
226 # With demangler in GNU ld
227 AC_ARG_WITH(demangler-in-ld,
228 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
229 demangler_in_ld="$with_demangler_in_ld",
232 # ----------------------
233 # Find default assembler
234 # ----------------------
238 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
239 gas_flag="$with_gnu_as",
243 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
244 DEFAULT_ASSEMBLER="$with_as")
245 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
246 if test ! -x "$DEFAULT_ASSEMBLER"; then
247 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
248 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
251 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
252 [Define to enable the use of a default assembler.])
255 AC_MSG_CHECKING([whether a default assembler was specified])
256 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
257 if test x"$gas_flag" = x"no"; then
258 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
260 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
270 # If a non-executable a.out is present (e.g. created by GNU as above even if
271 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
272 # file, even when creating an executable, so an execution test fails.
273 # Remove possible default executable files to avoid this.
275 # FIXME: This really belongs into AC_PROG_CC and can be removed once
276 # Autoconf includes it.
277 rm -f a.out a.exe b.out
279 # Find the native compiler
283 ACX_PROG_GNAT([-I"$srcdir"/ada])
285 # autoconf is lame and doesn't give us any substitution variable for this.
286 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
287 NO_MINUS_C_MINUS_O=yes
289 OUTPUT_OPTION='-o $@'
291 AC_SUBST(NO_MINUS_C_MINUS_O)
292 AC_SUBST(OUTPUT_OPTION)
294 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
295 # optimizations to be activated explicitly by the toplevel.
298 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
299 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
304 # Determine PICFLAG for target gnatlib.
305 GCC_PICFLAG_FOR_TARGET
306 AC_SUBST(PICFLAG_FOR_TARGET)
308 # -------------------------
309 # Check C compiler features
310 # -------------------------
312 AC_USE_SYSTEM_EXTENSIONS
318 # sizeof(char) is 1 by definition.
319 AC_CHECK_SIZEOF(void *)
320 AC_CHECK_SIZEOF(short)
322 AC_CHECK_SIZEOF(long)
323 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
324 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
327 # ---------------------
328 # Warnings and checking
329 # ---------------------
331 # Check $CC warning features (if it's GCC).
332 # We want to use -pedantic, but we don't want warnings about
336 # * C++11 narrowing conversions in { }
337 # So, we only use -pedantic if we can disable those warnings.
339 ACX_PROG_CC_WARNING_OPTS(
340 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual])), [loose_warn])
341 ACX_PROG_CC_WARNING_OPTS(
342 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
344 ACX_PROG_CC_WARNING_OPTS(
345 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
346 ACX_PROG_CC_WARNING_OPTS(
347 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
348 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
349 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
350 [-Wno-overlength-strings])), [strict_warn])
351 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
353 # The above macros do nothing if the compiler is not GCC. However, the
354 # Makefile has more goo to add other flags, so these variables are used
355 # to enable warnings only for GCC.
358 if test "x$GCC" = "xyes"; then
359 warn_cflags='$(GCC_WARN_CFLAGS)'
360 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
362 AC_SUBST(warn_cflags)
363 AC_SUBST(warn_cxxflags)
365 # Disable exceptions and RTTI if building with g++
366 ACX_PROG_CC_WARNING_OPTS(
367 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
370 # Enable expensive internal checks
372 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
376 AC_ARG_ENABLE(checking,
377 [AS_HELP_STRING([[--enable-checking[=LIST]]],
378 [enable expensive run-time checks. With LIST,
379 enable only specific categories of checks.
380 Categories are: yes,no,all,none,release.
381 Flags are: assert,df,fold,gc,gcac,gimple,misc,
382 rtlflag,rtl,runtime,tree,valgrind,types])],
383 [ac_checking_flags="${enableval}"],[
384 # Determine the default checks.
385 if test x$is_release = x ; then
386 ac_checking_flags=yes
388 ac_checking_flags=release
390 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
391 for check in release $ac_checking_flags
394 # these set all the flags to specific states
395 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
396 ac_fold_checking= ; ac_gc_checking=1 ;
397 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
398 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
399 ac_tree_checking=1 ; ac_valgrind_checking= ;
400 ac_types_checking=1 ;;
401 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
402 ac_fold_checking= ; ac_gc_checking= ;
403 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
404 ac_rtlflag_checking= ; ac_runtime_checking= ;
405 ac_tree_checking= ; ac_valgrind_checking= ;
406 ac_types_checking= ;;
407 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
408 ac_fold_checking=1 ; ac_gc_checking=1 ;
409 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
410 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
411 ac_tree_checking=1 ; ac_valgrind_checking= ;
412 ac_types_checking=1 ;;
413 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
414 ac_fold_checking= ; ac_gc_checking= ;
415 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
416 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
417 ac_tree_checking= ; ac_valgrind_checking= ;
418 ac_types_checking= ;;
419 # these enable particular checks
420 assert) ac_assert_checking=1 ;;
421 df) ac_df_checking=1 ;;
422 fold) ac_fold_checking=1 ;;
423 gc) ac_gc_checking=1 ;;
424 gcac) ac_gc_always_collect=1 ;;
425 gimple) ac_gimple_checking=1 ;;
426 misc) ac_checking=1 ;;
427 rtl) ac_rtl_checking=1 ;;
428 rtlflag) ac_rtlflag_checking=1 ;;
429 runtime) ac_runtime_checking=1 ;;
430 tree) ac_tree_checking=1 ;;
431 types) ac_types_checking=1 ;;
432 valgrind) ac_valgrind_checking=1 ;;
433 *) AC_MSG_ERROR(unknown check category $check) ;;
439 if test x$ac_checking != x ; then
440 AC_DEFINE(ENABLE_CHECKING, 1,
441 [Define if you want more run-time sanity checks. This one gets a grab
442 bag of miscellaneous but relatively cheap checks.])
443 nocommon_flag=-fno-common
445 AC_SUBST(nocommon_flag)
446 if test x$ac_df_checking != x ; then
447 AC_DEFINE(ENABLE_DF_CHECKING, 1,
448 [Define if you want more run-time sanity checks for dataflow.])
450 if test x$ac_assert_checking != x ; then
451 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
452 [Define if you want assertions enabled. This is a cheap check.])
454 if test x$ac_gimple_checking != x ; then
455 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
456 [Define if you want operations on GIMPLE (the basic data structure of
457 the high-level optimizers) to be checked for dynamic type safety at
458 runtime. This is moderately expensive.])
460 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
461 if test x$ac_runtime_checking != x ; then
462 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
463 [Define if you want runtime assertions enabled. This is a cheap check.])
465 if test x$ac_tree_checking != x ; then
466 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
467 [Define if you want all operations on trees (the basic data
468 structure of the front ends) to be checked for dynamic type safety
469 at runtime. This is moderately expensive. The tree browser debugging
470 routines will also be enabled by this option.
472 TREEBROWSER=tree-browser.o
475 if test x$ac_types_checking != x ; then
476 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
477 [Define if you want all gimple types to be verified after gimplifiation.
481 AC_SUBST(TREEBROWSER)
482 AC_SUBST(TREECHECKING)
483 if test x$ac_rtl_checking != x ; then
484 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
485 [Define if you want all operations on RTL (the basic data structure
486 of the optimizer and back end) to be checked for dynamic type safety
487 at runtime. This is quite expensive.])
489 if test x$ac_rtlflag_checking != x ; then
490 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
491 [Define if you want RTL flag accesses to be checked against the RTL
492 codes that are supported for each access macro. This is relatively
495 if test x$ac_gc_checking != x ; then
496 AC_DEFINE(ENABLE_GC_CHECKING, 1,
497 [Define if you want the garbage collector to do object poisoning and
498 other memory allocation checks. This is quite expensive.])
500 if test x$ac_gc_always_collect != x ; then
501 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
502 [Define if you want the garbage collector to operate in maximally
503 paranoid mode, validating the entire heap and collecting garbage at
504 every opportunity. This is extremely expensive.])
506 if test x$ac_fold_checking != x ; then
507 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
508 [Define if you want fold checked that it never destructs its argument.
509 This is quite expensive.])
511 valgrind_path_defines=
514 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
515 dnl # an if statement. This was the source of very frustrating bugs
516 dnl # in converting to autoconf 2.5x!
517 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
519 if test x$ac_valgrind_checking != x ; then
520 # It is certainly possible that there's valgrind but no valgrind.h.
521 # GCC relies on making annotations so we must have both.
522 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
523 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
524 [[#include <valgrind/memcheck.h>
525 #ifndef VALGRIND_DISCARD
526 #error VALGRIND_DISCARD not defined
528 [gcc_cv_header_valgrind_memcheck_h=yes],
529 [gcc_cv_header_valgrind_memcheck_h=no])
530 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
531 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
532 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
533 [[#include <memcheck.h>
534 #ifndef VALGRIND_DISCARD
535 #error VALGRIND_DISCARD not defined
537 [gcc_cv_header_memcheck_h=yes],
538 [gcc_cv_header_memcheck_h=no])
539 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
540 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
541 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
542 if test "x$valgrind_path" = "x" \
543 || (test $have_valgrind_h = no \
544 && test $gcc_cv_header_memcheck_h = no \
545 && test $gcc_cv_header_valgrind_memcheck_h = no); then
546 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
548 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
549 valgrind_command="$valgrind_path -q"
550 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
551 [Define if you want to run subprograms and generated programs
552 through valgrind (a memory checker). This is extremely expensive.])
553 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
554 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
555 [Define if valgrind's valgrind/memcheck.h header is installed.])
557 if test $gcc_cv_header_memcheck_h = yes; then
558 AC_DEFINE(HAVE_MEMCHECK_H, 1,
559 [Define if valgrind's memcheck.h header is installed.])
562 AC_SUBST(valgrind_path_defines)
563 AC_SUBST(valgrind_command)
565 # Enable code coverage collection
566 AC_ARG_ENABLE(coverage,
567 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
568 [enable compiler's code coverage collection.
569 Use to measure compiler performance and locate
570 unused parts of the compiler. With LEVEL, specify
571 optimization. Values are opt, noopt,
573 [case "${enableval}" in
575 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
578 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
581 # a.k.a. --disable-coverage
585 AC_MSG_ERROR(unknown coverage setting $enableval)
589 AC_SUBST(coverage_flags)
591 AC_ARG_ENABLE(gather-detailed-mem-stats,
592 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
593 [enable detailed memory allocation stats gathering])], [],
594 [enable_gather_detailed_mem_stats=no])
595 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
596 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
597 [Define to enable detailed memory allocation stats gathering.])
599 # -------------------------------
600 # Miscenalleous configure options
601 # -------------------------------
605 [AS_HELP_STRING([--with-stabs],
606 [arrange to use stabs instead of host debug format])],
610 # Determine whether or not multilibs are enabled.
611 AC_ARG_ENABLE(multilib,
612 [AS_HELP_STRING([--enable-multilib],
613 [enable library support for multiple ABIs])],
614 [], [enable_multilib=yes])
615 AC_SUBST(enable_multilib)
617 # Determine whether or not multiarch is enabled.
618 AC_ARG_ENABLE(multiarch,
619 [AS_HELP_STRING([--enable-multiarch],
620 [enable support for multiarch paths])],
621 [case "${enableval}" in
622 yes|no|auto) enable_multiarch=$enableval;;
623 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
624 esac], [enable_multiarch=auto])
625 if test x${enable_multiarch} = xauto; then
626 if test x${with_native_system_header_dir} != x; then
627 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
630 if test x$host != x$target && test "x$with_sysroot" = x; then
631 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
635 AC_MSG_CHECKING(for multiarch configuration)
636 AC_SUBST(enable_multiarch)
637 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
639 # needed for setting the multiarch name for soft-float/hard-float ABIs
643 # Enable __cxa_atexit for C++.
644 AC_ARG_ENABLE(__cxa_atexit,
645 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
648 # Enable C extension for decimal float if target supports it.
649 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
651 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
652 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
653 [Define to 1 to enable decimal float extension to C.])
655 # Use default_decimal_float for dependency.
656 enable_decimal_float=$default_decimal_float
658 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
659 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
660 [Define to 1 to specify that we are using the BID decimal floating
661 point format instead of DPD])
663 # Enable C extension for fixed-point arithmetic.
664 AC_ARG_ENABLE(fixed-point,
665 [AS_HELP_STRING([--enable-fixed-point],
666 [enable fixed-point arithmetic extension to C])],
671 enable_fixed_point=yes
675 enable_fixed_point=yes
678 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
679 enable_fixed_point=no
683 AC_SUBST(enable_fixed_point)
685 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
686 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
687 [Define to 1 to enable fixed-point arithmetic extension to C.])
690 # Pass with no value to take the default
691 # Pass with a value to specify a thread package
692 AC_ARG_ENABLE(threads,
693 [AS_HELP_STRING([[--enable-threads[=LIB]]],
694 [enable thread usage for target GCC,
695 using LIB thread package])],,
699 [AS_HELP_STRING([--enable-tls],
700 [enable or disable generation of tls code
701 overriding the assembler check for tls support])],
705 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
706 Valid choices are 'yes' and 'no'.]) ;;
710 AC_ARG_ENABLE(objc-gc,
711 [AS_HELP_STRING([--enable-objc-gc],
712 [enable the use of Boehm's garbage collector with
713 the GNU Objective-C runtime])],
714 if test x$enable_objc_gc = xno; then
722 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
723 dwarf2="$with_dwarf2",
726 AC_ARG_ENABLE(shared,
727 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
729 case $enable_shared in
733 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
734 for pkg in $enableval; do
735 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
742 ], [enable_shared=yes])
743 AC_SUBST(enable_shared)
745 AC_ARG_WITH([native-system-header-dir],
746 [ --with-native-system-header-dir=dir
747 use dir as the directory to look for standard
748 system header files in. Defaults to /usr/include.],
750 case ${with_native_system_header_dir} in
751 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
752 /* | [[A-Za-z]]:[[\\/]]*) ;;
753 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
755 configured_native_system_header_dir="${withval}"
756 ], [configured_native_system_header_dir=])
758 AC_ARG_WITH(build-sysroot,
759 [AS_HELP_STRING([--with-build-sysroot=sysroot],
760 [use sysroot as the system root during the build])],
761 [if test x"$withval" != x ; then
762 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
764 [SYSROOT_CFLAGS_FOR_TARGET=])
765 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
767 if test "x$prefix" = xNONE; then
768 test_prefix=/usr/local
772 if test "x$exec_prefix" = xNONE; then
773 test_exec_prefix=$test_prefix
775 test_exec_prefix=$exec_prefix
779 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
780 [search for usr/lib, usr/include, et al, within DIR])],
782 case ${with_sysroot} in
783 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
784 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
787 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
788 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
790 case ${TARGET_SYSTEM_ROOT} in
791 "${test_prefix}"|"${test_prefix}/"*|\
792 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
793 '${prefix}'|'${prefix}/'*|\
794 '${exec_prefix}'|'${exec_prefix}/'*)
795 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
796 TARGET_SYSTEM_ROOT_DEFINE="$t"
801 TARGET_SYSTEM_ROOT_DEFINE=
802 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
804 AC_SUBST(TARGET_SYSTEM_ROOT)
805 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
806 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
809 [AS_HELP_STRING([--with-specs=SPECS],
810 [add SPECS to driver command-line processing])],
811 [CONFIGURE_SPECS=$withval],
814 AC_SUBST(CONFIGURE_SPECS)
816 ACX_PKGVERSION([GCC])
817 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
819 # Sanity check enable_languages in case someone does not run the toplevel
820 # configure # script.
821 AC_ARG_ENABLE(languages,
822 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
823 [case ,${enable_languages}, in
825 # go safe -- we cannot be much sure without the toplevel
827 # analysis of which target libs are present and usable
831 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
836 enable_languages=c,${enable_languages}
839 [enable_languages=c])
841 AC_ARG_WITH(multilib-list,
842 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
844 with_multilib_list=default)
846 # -------------------------
847 # Checks for other programs
848 # -------------------------
852 # Find some useful tools
854 # We need awk to create options.c and options.h.
855 # Bail out if it's missing.
857 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
864 AC_SUBST(ranlib_flags)
868 # See if cmp has --ignore-initial.
869 gcc_AC_PROG_CMP_IGNORE_INITIAL
871 # See if we have the mktemp command.
872 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
874 # See if makeinfo has been installed and is modern enough
875 # that we can use it.
876 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
877 [GNU texinfo.* \([0-9][0-9.]*\)],
878 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
879 if test $gcc_cv_prog_makeinfo_modern = no; then
881 *** Makeinfo is missing or too old.
882 *** Info documentation will not be built.])
889 # Is pod2man recent enough to regenerate manpages?
890 AC_MSG_CHECKING([for recent Pod::Man])
891 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
893 GENERATED_MANPAGES=generated-manpages
898 AC_SUBST(GENERATED_MANPAGES)
900 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
903 dnl Don't use AC_PROG_LEX; we insist on flex.
904 dnl LEXLIB is not useful in gcc.
905 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
908 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
910 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
911 # check for build == host before using them.
914 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
915 && test -d ../binutils ; then
916 NM='${objdir}/../binutils/nm-new'
918 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
922 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
923 && test -d ../binutils ; then
924 AR='${objdir}/../binutils/ar'
926 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
930 # --------------------
931 # Checks for C headers
932 # --------------------
934 # Need to reject headers which give warnings, so that the -Werror bootstrap
935 # works later. *sigh* This needs to come before all header checks.
942 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
943 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
944 sys/resource.h sys/param.h sys/times.h sys/stat.h \
945 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
947 # Check for thread headers.
948 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
949 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
951 # These tests can't be done till we know if we have limits.h.
955 # ----------------------
956 # Checks for C++ headers
957 # ----------------------
959 dnl Autoconf will give an error in the configure script if there is no
960 dnl C++ preprocessor. Hack to prevent that.
961 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
963 m4_popdef([AC_MSG_ERROR])[]dnl
967 AC_CHECK_HEADERS(unordered_map)
968 AC_CHECK_HEADERS(tr1/unordered_map)
969 AC_CHECK_HEADERS(ext/hash_map)
978 # These libraries may be used by collect2.
979 # We may need a special search path to get them linked.
980 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
982 for libs in '' -lld -lmld \
983 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
984 '-L/usr/lib/cmplrs/cc3.11 -lmld'
987 AC_TRY_LINK_FUNC(ldopen,
988 [gcc_cv_collect2_libs="$libs"; break])
991 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
992 case $gcc_cv_collect2_libs in
994 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
996 AC_SUBST(COLLECT2_LIBS)
998 # When building Ada code on Alpha, we need exc_resume which is usually in
999 # -lexc. So test for it.
1002 AC_SEARCH_LIBS(exc_resume, exc)
1005 AC_SUBST(GNAT_LIBEXC)
1007 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1010 AC_SEARCH_LIBS(kstat_open, kstat)
1011 EXTRA_GCC_LIBS="$LIBS"
1013 AC_SUBST(EXTRA_GCC_LIBS)
1015 # Some systems put ldexp and frexp in libm instead of libc; assume
1016 # they're both in the same place. jcf-dump needs them.
1019 AC_SEARCH_LIBS(ldexp, m)
1024 # Use <inttypes.h> only if it exists,
1025 # doesn't clash with <sys/types.h>, and declares intmax_t.
1026 AC_MSG_CHECKING(for inttypes.h)
1027 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1028 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1029 [[#include <sys/types.h>
1030 #include <inttypes.h>]],
1031 [[intmax_t i = -1;]])],
1032 [gcc_cv_header_inttypes_h=yes],
1033 [gcc_cv_header_inttypes_h=no])])
1034 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1035 if test $gcc_cv_header_inttypes_h = yes; then
1036 AC_DEFINE(HAVE_INTTYPES_H, 1,
1037 [Define if you have a working <inttypes.h> header file.])
1040 dnl Disabled until we have a complete test for buggy enum bitfields.
1041 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1043 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1044 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1045 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1046 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1047 putchar_unlocked putc_unlocked)
1048 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1049 sysconf strsignal getrusage nl_langinfo \
1050 gettimeofday mbstowcs wcswidth mmap setlocale \
1051 gcc_UNLOCKED_FUNCS madvise)
1053 if test x$ac_cv_func_mbstowcs = xyes; then
1054 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1055 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1061 [gcc_cv_func_mbstowcs_works=yes],
1062 [gcc_cv_func_mbstowcs_works=no],
1063 [gcc_cv_func_mbstowcs_works=yes])])
1064 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1065 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1066 [Define this macro if mbstowcs does not crash when its
1067 first argument is NULL.])
1071 AC_CHECK_TYPE(ssize_t, int)
1072 AC_CHECK_TYPE(caddr_t, char *)
1074 GCC_AC_FUNC_MMAP_BLACKLIST
1078 # Under VMS, vfork works very differently than on Unix. The standard test
1079 # won't work, and it isn't easily adaptable. It makes more sense to
1081 ac_cv_func_vfork_works=yes
1086 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1087 # iconv() prototype.
1092 # Until we have in-tree GNU iconv:
1094 AC_SUBST(LIBICONV_DEP)
1100 # We will need to find libiberty.h and ansidecl.h
1101 saved_CFLAGS="$CFLAGS"
1102 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1103 saved_CXXFLAGS="$CXXFLAGS"
1104 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1105 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1106 strsignal strstr stpcpy strverscmp \
1107 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1108 free basename getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1109 #include "ansidecl.h"
1110 #include "system.h"])
1112 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1113 #include "ansidecl.h"
1115 #ifdef HAVE_SYS_RESOURCE_H
1116 #include <sys/resource.h>
1120 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1121 #include "ansidecl.h"
1123 #ifdef HAVE_SYS_RESOURCE_H
1124 #include <sys/resource.h>
1126 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1127 [Define to `long' if <sys/resource.h> doesn't define.])])
1129 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1130 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1131 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1132 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1133 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1134 #include "ansidecl.h"
1143 gcc_AC_CHECK_DECLS(times, , ,[
1144 #include "ansidecl.h"
1146 #ifdef HAVE_SYS_TIMES_H
1147 #include <sys/times.h>
1151 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1152 #include "ansidecl.h"
1157 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1160 gcc_AC_CHECK_DECLS(madvise, , ,[
1161 #include "ansidecl.h"
1166 # More time-related stuff.
1167 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1168 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1169 #include "ansidecl.h"
1171 #ifdef HAVE_SYS_TIMES_H
1172 #include <sys/times.h>
1174 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1175 if test $ac_cv_struct_tms = yes; then
1176 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1177 [Define if <sys/times.h> defines struct tms.])
1180 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1181 # revisit after autoconf 2.50.
1182 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1183 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1184 #include "ansidecl.h"
1186 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1187 if test $gcc_cv_type_clock_t = yes; then
1188 AC_DEFINE(HAVE_CLOCK_T, 1,
1189 [Define if <time.h> defines clock_t.])
1192 # Check if F_SETLKW is supported by fcntl.
1193 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1194 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1195 #include <fcntl.h>]], [[
1201 return fcntl (1, F_SETLKW, &fl);]])],
1202 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1203 if test $ac_cv_f_setlkw = yes; then
1204 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1205 [Define if F_SETLKW supported by fcntl.])
1208 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1209 CFLAGS="$saved_CFLAGS"
1210 CXXFLAGS="$saved_CXXFLAGS"
1212 # mkdir takes a single argument on some systems.
1213 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1221 # With Setjmp/Longjmp based exception handling.
1222 AC_ARG_ENABLE(sjlj-exceptions,
1223 [AS_HELP_STRING([--enable-sjlj-exceptions],
1224 [arrange to use setjmp/longjmp exception handling])],
1227 if test $enableval != yes; then
1228 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1233 force_sjlj_exceptions=yes],
1236 force_sjlj_exceptions=yes
1240 force_sjlj_exceptions=no
1243 if test $force_sjlj_exceptions = yes; then
1244 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1245 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1246 [Define 0/1 to force the choice for exception handling model.])
1249 # --------------------------------------------------------
1250 # Build, host, and target specific configuration fragments
1251 # --------------------------------------------------------
1253 # Collect build-machine-specific information.
1254 . ${srcdir}/config.build
1256 # Collect host-machine-specific information.
1257 . ${srcdir}/config.host
1261 # Collect target-machine-specific information.
1262 . ${srcdir}/config.gcc
1264 extra_objs="${host_extra_objs} ${extra_objs}"
1265 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1267 # Default the target-machine variables that were not explicitly set.
1268 if test x"$tm_file" = x
1269 then tm_file=$cpu_type/$cpu_type.h; fi
1271 if test x"$extra_headers" = x
1272 then extra_headers=; fi
1274 if test x$md_file = x
1275 then md_file=$cpu_type/$cpu_type.md; fi
1277 if test x$out_file = x
1278 then out_file=$cpu_type/$cpu_type.c; fi
1280 if test x"$tmake_file" = x
1281 then tmake_file=$cpu_type/t-$cpu_type
1284 # Support --enable-initfini-array.
1285 if test x$enable_initfini_array != xno; then
1286 tm_file="${tm_file} initfini-array.h"
1289 if test x"$dwarf2" = xyes
1290 then tm_file="$tm_file tm-dwarf2.h"
1293 # Say what files are being used for the output code and MD file.
1294 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1295 echo "Using \`$srcdir/config/$md_file' as machine description file."
1297 # If any of the xm_file variables contain nonexistent files, warn
1298 # about them and drop them.
1301 for x in $build_xm_file; do
1302 if test -f $srcdir/config/$x
1304 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1310 for x in $host_xm_file; do
1311 if test -f $srcdir/config/$x
1313 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1319 for x in $xm_file; do
1320 if test -f $srcdir/config/$x
1322 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1328 for f in $tm_file; do
1331 if test $count = ax; then
1332 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1334 echo "Using the following target machine macro files:"
1335 for f in $tm_file; do
1336 echo " $srcdir/config/$f"
1340 if test x$need_64bit_hwint = xyes; then
1341 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1342 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1345 if test x$use_long_long_for_widest_fast_int = xyes; then
1346 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1347 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1348 efficiently supported by the host hardware.])
1351 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1352 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1354 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1355 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1358 for f in $host_xm_file; do
1361 if test $count = a; then
1363 elif test $count = ax; then
1364 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1366 echo "Using the following host machine macro files:"
1367 for f in $host_xm_file; do
1368 echo " $srcdir/config/$f"
1371 echo "Using ${out_host_hook_obj} for host machine hooks."
1373 if test "$host_xm_file" != "$build_xm_file"; then
1375 for f in $build_xm_file; do
1378 if test $count = a; then
1380 elif test $count = ax; then
1381 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1383 echo "Using the following build machine macro files:"
1384 for f in $build_xm_file; do
1385 echo " $srcdir/config/$f"
1390 if test -n "$configured_native_system_header_dir"; then
1391 native_system_header_dir=$configured_native_system_header_dir
1393 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1394 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1398 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1399 gcc_cv_mcontext_underscores,
1401 #include <sys/cdefs.h>
1402 #include <sys/signal.h>
1403 #include <ucontext.h>
1404 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1406 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1407 if test $gcc_cv_mcontext_underscores = yes; then
1408 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1409 [mcontext_t fields start with __])
1418 # Check if a valid thread package
1419 case ${enable_threads} in
1422 target_thread_file='single'
1426 target_thread_file='single'
1428 aix | dce | lynx | mipssde | posix | rtems | \
1429 single | tpf | vxworks | win32)
1430 target_thread_file=${enable_threads}
1433 echo "${enable_threads} is an unknown thread package" 1>&2
1438 if test x${thread_file} = x; then
1439 # No thread file set by target-specific clauses in config.gcc,
1440 # so use file chosen by default logic above
1441 thread_file=${target_thread_file}
1449 if test x$enable___cxa_atexit = xyes || \
1450 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1451 if test x$host = x$target; then
1453 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1454 # keyed to flag_use_cxa_atexit
1462 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1463 [echo "__cxa_atexit can't be enabled on this target"])
1467 # We can't check for __cxa_atexit when building a cross, so assume
1471 if test x$use_cxa_atexit = xyes; then
1472 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1473 [Define if you want to use __cxa_atexit, rather than atexit, to
1474 register C++ destructors for local statics and global objects.
1475 This is essential for fully standards-compliant handling of
1476 destructors, but requires __cxa_atexit in libc.])
1480 # Look for a file containing extra machine modes.
1481 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1482 extra_modes_file='$(srcdir)'/config/${extra_modes}
1483 AC_SUBST(extra_modes_file)
1484 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1485 [Define to the name of a file containing a list of extra machine modes
1486 for this architecture.])
1489 # Convert extra_options into a form suitable for Makefile use.
1492 for f in $extra_options; do
1493 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1494 all_opt_files="$all_opt_files $srcdir/config/$f"
1496 AC_SUBST(extra_opt_files)
1498 # auto-host.h is the file containing items generated by autoconf and is
1499 # the first file included by config.h.
1500 # If host=build, it is correct to have bconfig include auto-host.h
1501 # as well. If host!=build, we are in error and need to do more
1502 # work to find out the build config parameters.
1503 if test x$host = x$build
1505 build_auto=auto-host.h
1507 # We create a subdir, then run autoconf in the subdir.
1508 # To prevent recursion we set host and build for the new
1509 # invocation of configure to the build for this invocation
1516 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1517 *) realsrcdir=../${srcdir};;
1519 # Clearing GMPINC is necessary to prevent host headers being
1520 # used by the build compiler. Defining GENERATOR_FILE stops
1521 # system.h from including gmp.h.
1522 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1523 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1524 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1525 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1526 ${realsrcdir}/configure \
1527 --enable-languages=${enable_languages-all} \
1528 --target=$target_alias --host=$build_alias --build=$build_alias
1530 # We just finished tests for the build machine, so rename
1531 # the file auto-build.h in the gcc directory.
1532 mv auto-host.h ../auto-build.h
1535 build_auto=auto-build.h
1537 AC_SUBST(build_subdir)
1539 tm_file="${tm_file} defaults.h"
1540 tm_p_file="${tm_p_file} tm-preds.h"
1541 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1542 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1543 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1544 # put this back in temporarily.
1545 xm_file="auto-host.h ansidecl.h ${xm_file}"
1552 # Compile in configure arguments.
1553 if test -f configargs.h ; then
1554 # Being re-configured.
1555 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1556 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1558 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1561 # Double all backslashes and backslash all quotes to turn
1562 # gcc_config_arguments into a C string.
1563 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1564 $gcc_config_arguments
1566 gcc_config_arguments_str=`cat conftest.out`
1569 cat > configargs.h <<EOF
1570 /* Generated automatically. */
1571 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1572 static const char thread_model[] = "$thread_file";
1574 static const struct {
1575 const char *name, *value;
1576 } configure_default_options[] = $configure_default_options;
1581 gcc_BASEVER=`cat $srcdir/BASE-VER`
1582 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1583 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1584 if test -f $srcdir/REVISION ; then
1585 gcc_REVISION=`cat $srcdir/REVISION`
1589 cat > plugin-version.h <<EOF
1590 #include "configargs.h"
1592 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1593 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1594 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1595 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1597 static char basever[] = "$gcc_BASEVER";
1598 static char datestamp[] = "$gcc_DATESTAMP";
1599 static char devphase[] = "$gcc_DEVPHASE";
1600 static char revision[] = "$gcc_REVISION";
1602 /* FIXME plugins: We should make the version information more precise.
1603 One way to do is to add a checksum. */
1605 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1607 configuration_arguments};
1611 # Internationalization
1612 ZW_GNU_GETTEXT_SISTER_DIR
1614 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1615 # -liconv on the link line twice.
1616 case "$LIBINTL" in *$LIBICONV*)
1620 AC_ARG_ENABLE(secureplt,
1621 [AS_HELP_STRING([--enable-secureplt],
1622 [enable -msecure-plt by default for PowerPC])],
1625 AC_ARG_ENABLE(leading-mingw64-underscores,
1626 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1627 [enable leading underscores on 64 bit mingw targets]),
1629 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1630 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1631 [Define if we should use leading underscore on 64 bit mingw targets])])
1634 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1637 AC_ARG_ENABLE(frame-pointer,
1638 [AS_HELP_STRING([--enable-frame-pointer],
1639 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1642 linux* | darwin[[8912]]*)
1643 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1645 enable_frame_pointer=no
1648 enable_frame_pointer=yes
1653 # Windows32 Registry support for specifying GCC installation paths.
1654 AC_ARG_ENABLE(win32-registry,
1655 [AS_HELP_STRING([--disable-win32-registry],
1656 [disable lookup of installation paths in the
1657 Registry on Windows hosts])
1658 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1659 AS_HELP_STRING([--enable-win32-registry=KEY],
1660 [use KEY instead of GCC version as the last portion
1661 of the registry key])],,)
1664 win32 | pe | cygwin* | mingw32* | uwin*)
1665 if test "x$enable_win32_registry" != xno; then
1666 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1669 if test "x$enable_win32_registry" != xno; then
1670 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1671 [Define to 1 if installation paths should be looked up in the Windows
1672 Registry. Ignored on non-Windows hosts.])
1674 if test "x$enable_win32_registry" != xyes \
1675 && test "x$enable_win32_registry" != x; then
1676 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1677 [Define to be the last component of the Windows registry key under which
1678 to look for installation paths. The full key used will be
1679 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1680 The default is the GCC version number.])
1686 # Get an absolute path to the GCC top-level source directory
1687 holddir=`${PWDCMD-pwd}`
1689 topdir=`${PWDCMD-pwd}`
1692 # Conditionalize the makefile for this host machine.
1694 for f in ${host_xmake_file}
1696 if test -f ${srcdir}/config/$f
1698 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1702 # Conditionalize the makefile for this target machine.
1704 for f in ${tmake_file}
1706 if test -f ${srcdir}/config/$f
1708 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1711 tmake_file="${tmake_file_}"
1713 out_object_file=`basename $out_file .c`.o
1714 common_out_object_file=`basename $common_out_file .c`.o
1716 tm_file_list="options.h"
1717 tm_include_list="options.h insn-constants.h"
1718 for f in $tm_file; do
1721 f=`echo $f | sed 's/^..//'`
1722 tm_file_list="${tm_file_list} $f"
1723 tm_include_list="${tm_include_list} $f"
1726 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1727 tm_include_list="${tm_include_list} $f"
1730 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1731 tm_include_list="${tm_include_list} config/$f"
1738 for f in $tm_p_file; do
1741 tm_p_file_list="${tm_p_file_list} $f"
1742 tm_p_include_list="${tm_p_include_list} $f"
1745 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1746 tm_p_include_list="${tm_p_include_list} config/$f"
1752 for f in $xm_file; do
1755 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1756 xm_include_list="${xm_include_list} $f"
1759 xm_file_list="${xm_file_list} $f"
1760 xm_include_list="${xm_include_list} $f"
1763 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1764 xm_include_list="${xm_include_list} config/$f"
1770 host_xm_include_list=
1771 for f in $host_xm_file; do
1774 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1775 host_xm_include_list="${host_xm_include_list} $f"
1778 host_xm_file_list="${host_xm_file_list} $f"
1779 host_xm_include_list="${host_xm_include_list} $f"
1782 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1783 host_xm_include_list="${host_xm_include_list} config/$f"
1789 for f in $build_xm_file; do
1792 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1793 build_xm_include_list="${build_xm_include_list} $f"
1795 auto-build.h | auto-host.h )
1796 build_xm_file_list="${build_xm_file_list} $f"
1797 build_xm_include_list="${build_xm_include_list} $f"
1800 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1801 build_xm_include_list="${build_xm_include_list} config/$f"
1806 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1807 # cross-compiler which does not use the native headers and libraries.
1808 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1809 CROSS= AC_SUBST(CROSS)
1810 ALL=all.internal AC_SUBST(ALL)
1811 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1813 if test "x$with_build_sysroot" != x; then
1814 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1816 # This value is used, even on a native system, because
1817 # CROSS_SYSTEM_HEADER_DIR is just
1818 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1819 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1822 if test x$host != x$target
1824 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1826 SYSTEM_HEADER_DIR=$build_system_header_dir
1827 case "$host","$target" in
1828 # Darwin crosses can use the host system's libraries and headers,
1829 # because of the fat library support. Of course, it must be the
1830 # same version of Darwin on both sides. Allow the user to
1831 # just say --target=foo-darwin without a version number to mean
1832 # "the version on this system".
1833 *-*-darwin*,*-*-darwin*)
1834 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1835 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1836 if test $hostos = $targetos -o $targetos = darwin ; then
1838 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1843 i?86-*-*,x86_64-*-* \
1844 | powerpc*-*-*,powerpc64*-*-*)
1845 CROSS="$CROSS -DNATIVE_CROSS" ;;
1850 if test "x$with_headers" = x; then
1857 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1858 SYSTEM_HEADER_DIR=$build_system_header_dir
1861 # If this is a cross-compiler that does not
1862 # have its own set of headers then define
1865 # If this is using newlib, without having the headers available now,
1866 # then define inhibit_libc in LIBGCC2_CFLAGS.
1867 # This prevents libgcc2 from containing any code which requires libc
1869 : ${inhibit_libc=false}
1870 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1871 test x$with_newlib = xyes ; } &&
1872 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1875 AC_SUBST(inhibit_libc)
1877 # When building gcc with a cross-compiler, we need to adjust things so
1878 # that the generator programs are still built with the native compiler.
1879 # Also, we cannot run fixincludes.
1881 # These are the normal (build=host) settings:
1882 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1883 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
1884 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1885 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
1886 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1887 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1889 # And these apply if build != host, or we are generating coverage data
1890 if test x$build != x$host || test "x$coverage_flags" != x
1892 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1893 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
1894 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1897 # Expand extra_headers to include complete path.
1898 # This substitutes for lots of t-* files.
1900 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1901 for file in ${extra_headers} ; do
1902 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1905 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1906 if test x"$use_gcc_tgmath" = xyes
1907 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1910 # Define collect2 in Makefile.
1911 case $host_can_use_collect2 in
1913 *) collect2='collect2$(exeext)' ;;
1915 AC_SUBST([collect2])
1917 # Add a definition of USE_COLLECT2 if system wants one.
1918 case $use_collect2 in
1919 no) use_collect2= ;;
1922 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1923 xm_defines="${xm_defines} USE_COLLECT2"
1924 case $host_can_use_collect2 in
1926 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1932 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1933 [Define to the name of the LTO plugin DSO that must be
1934 passed to the linker's -plugin=LIB option.])
1936 # ---------------------------
1937 # Assembler & linker features
1938 # ---------------------------
1940 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1941 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1942 # However when ld-new is first executed from the build tree, libtool will
1943 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1944 # to the build tree. While doing this we need to use the previous-stage
1945 # linker, or we have an infinite loop. The presence of a shell script as
1946 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1947 # the gcc/collect-ld script. So we need to know how libtool works, or
1948 # exec-tool will fail.
1950 m4_defun([_LT_CONFIG_COMMANDS], [])
1953 AC_SUBST(enable_fast_install)
1955 # Identify the assembler which will work hand-in-glove with the newly
1956 # built GCC, so that we can examine its features. This is the assembler
1957 # which will be driven by the driver program.
1959 # If build != host, and we aren't building gas in-tree, we identify a
1960 # build->target assembler and hope that it will have the same features
1961 # as the host->target assembler we'll be using.
1962 gcc_cv_gas_major_version=
1963 gcc_cv_gas_minor_version=
1964 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1966 m4_pattern_allow([AS_FOR_TARGET])dnl
1967 AS_VAR_SET_IF(gcc_cv_as,, [
1968 if test -x "$DEFAULT_ASSEMBLER"; then
1969 gcc_cv_as="$DEFAULT_ASSEMBLER"
1970 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1971 && test -f ../gas/Makefile \
1972 && test x$build = x$host; then
1973 gcc_cv_as=../gas/as-new$build_exeext
1974 elif test -x as$build_exeext; then
1975 # Build using assembler in the current directory.
1976 gcc_cv_as=./as$build_exeext
1977 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1978 gcc_cv_as="$AS_FOR_TARGET"
1980 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1983 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1984 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1985 case "$ORIGINAL_AS_FOR_TARGET" in
1986 ./as | ./as$build_exeext) ;;
1987 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1990 AC_MSG_CHECKING(what assembler to use)
1991 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1992 # Single tree build which includes gas. We want to prefer it
1993 # over whatever linker top-level may have detected, since
1994 # we'll use what we're building after installation anyway.
1995 AC_MSG_RESULT(newly built gas)
1997 _gcc_COMPUTE_GAS_VERSION
1998 in_tree_gas_is_elf=no
1999 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2000 || (grep 'obj_format = multi' ../gas/Makefile \
2001 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2003 in_tree_gas_is_elf=yes
2006 AC_MSG_RESULT($gcc_cv_as)
2010 # Identify the linker which will work hand-in-glove with the newly
2011 # built GCC, so that we can examine its features. This is the linker
2012 # which will be driven by the driver program.
2014 # If build != host, and we aren't building gas in-tree, we identify a
2015 # build->target linker and hope that it will have the same features
2016 # as the host->target linker we'll be using.
2017 gcc_cv_gld_major_version=
2018 gcc_cv_gld_minor_version=
2019 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2020 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2022 AS_VAR_SET_IF(gcc_cv_ld,, [
2023 if test -x "$DEFAULT_LINKER"; then
2024 gcc_cv_ld="$DEFAULT_LINKER"
2025 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2026 && test -f ../ld/Makefile \
2027 && test x$build = x$host; then
2028 gcc_cv_ld=../ld/ld-new$build_exeext
2029 elif test -x collect-ld$build_exeext; then
2030 # Build using linker in the current directory.
2031 gcc_cv_ld=./collect-ld$build_exeext
2032 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2033 gcc_cv_ld="$LD_FOR_TARGET"
2035 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2038 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2039 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2040 # if the PLUGIN_LD is set ld-new, just have it as ld
2041 # as that is the installed named.
2042 if test x$PLUGIN_LD_SUFFIX = xld-new \
2043 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2046 AC_ARG_WITH(plugin-ld,
2047 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2048 [if test x"$withval" != x; then
2049 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2050 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2052 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2053 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2055 # Check to see if we are using gold instead of ld
2056 AC_MSG_CHECKING(whether we are using gold)
2058 if test x$gcc_cv_ld != x; then
2059 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2060 | grep "GNU gold" > /dev/null; then
2064 AC_MSG_RESULT($ld_is_gold)
2066 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2067 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2068 case "$ORIGINAL_LD_FOR_TARGET" in
2069 ./collect-ld | ./collect-ld$build_exeext) ;;
2070 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2073 AC_MSG_CHECKING(what linker to use)
2074 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2075 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2076 # Single tree build which includes ld. We want to prefer it
2077 # over whatever linker top-level may have detected, since
2078 # we'll use what we're building after installation anyway.
2079 AC_MSG_RESULT(newly built ld)
2081 in_tree_ld_is_elf=no
2082 if (grep 'EMUL = .*elf' ../ld/Makefile \
2083 || grep 'EMUL = .*linux' ../ld/Makefile \
2084 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2085 in_tree_ld_is_elf=yes
2086 elif test "$ld_is_gold" = yes; then
2087 in_tree_ld_is_elf=yes
2089 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
2092 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2093 if test x$gcc_cv_gld_version != x; then
2097 case $gcc_cv_gld_version in
2100 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2103 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2104 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2107 AC_MSG_RESULT($gcc_cv_ld)
2111 # Figure out what nm we will be using.
2112 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2113 AS_VAR_SET_IF(gcc_cv_nm,, [
2114 if test -f $gcc_cv_binutils_srcdir/configure.in \
2115 && test -f ../binutils/Makefile \
2116 && test x$build = x$host; then
2117 gcc_cv_nm=../binutils/nm-new$build_exeext
2118 elif test -x nm$build_exeext; then
2119 gcc_cv_nm=./nm$build_exeext
2120 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2121 gcc_cv_nm="$NM_FOR_TARGET"
2123 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2126 AC_MSG_CHECKING(what nm to use)
2127 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2128 # Single tree build which includes binutils.
2129 AC_MSG_RESULT(newly built nm)
2132 AC_MSG_RESULT($gcc_cv_nm)
2136 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2137 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2138 case "$ORIGINAL_NM_FOR_TARGET" in
2139 ./nm | ./nm$build_exeext) ;;
2140 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2144 # Figure out what objdump we will be using.
2145 AS_VAR_SET_IF(gcc_cv_objdump,, [
2146 if test -f $gcc_cv_binutils_srcdir/configure.in \
2147 && test -f ../binutils/Makefile \
2148 && test x$build = x$host; then
2149 # Single tree build which includes binutils.
2150 gcc_cv_objdump=../binutils/objdump$build_exeext
2151 elif test -x objdump$build_exeext; then
2152 gcc_cv_objdump=./objdump$build_exeext
2153 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2154 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2156 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2159 AC_MSG_CHECKING(what objdump to use)
2160 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2161 # Single tree build which includes binutils.
2162 AC_MSG_RESULT(newly built objdump)
2163 elif test x$gcc_cv_objdump = x; then
2164 AC_MSG_RESULT(not found)
2166 AC_MSG_RESULT($gcc_cv_objdump)
2169 # Figure out what readelf we will be using.
2170 AS_VAR_SET_IF(gcc_cv_readelf,, [
2171 if test -f $gcc_cv_binutils_srcdir/configure.in \
2172 && test -f ../binutils/Makefile \
2173 && test x$build = x$host; then
2174 # Single tree build which includes binutils.
2175 gcc_cv_readelf=../binutils/readelf$build_exeext
2176 elif test -x readelf$build_exeext; then
2177 gcc_cv_readelf=./readelf$build_exeext
2179 AC_PATH_PROG(gcc_cv_readelf, readelf)
2182 AC_MSG_CHECKING(what readelf to use)
2183 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2184 # Single tree build which includes binutils.
2185 AC_MSG_RESULT(newly built readelf)
2186 elif test x$gcc_cv_readelf = x; then
2187 AC_MSG_RESULT(not found)
2189 AC_MSG_RESULT($gcc_cv_readelf)
2192 # Figure out what assembler alignment features are present.
2193 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2197 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2198 [Define if your assembler supports .balign and .p2align.])])
2200 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2203 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2204 [Define if your assembler supports specifying the maximum number
2205 of bytes to skip when using the GAS .p2align command.])])
2207 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2210 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2211 [Define if your assembler supports .literal16.])])
2213 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2215 [conftest_label1: .word 0
2217 conftest_label2: .word 0
2219 [if test x$gcc_cv_nm != x; then
2220 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2221 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2222 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2224 else gcc_cv_as_subsection_m1=yes
2226 rm -f conftest.nm1 conftest.nm2
2228 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2229 [Define if your assembler supports .subsection and .subsection -1 starts
2230 emitting at the beginning of your section.])])
2232 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2235 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2237 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2239 [ .weakref foobar, barfnot],,
2240 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2242 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2245 .NSUBSPA $CODE$,COMDAT],,
2246 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2248 # .hidden needs to be supported in both the assembler and the linker,
2249 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2250 # This is irritatingly difficult to feature test for; we have to check the
2251 # date string after the version number. If we've got an in-tree
2252 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2254 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2255 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2259 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2260 # STV_HIDDEN, so disable .hidden support if so.
2262 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2263 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2264 cat > conftest.s <<EOF
2271 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2272 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2273 grep '\.hidden default' > /dev/null; then
2276 gcc_cv_as_hidden=yes
2279 # Assume bug is present if objdump is missing.
2284 gcc_cv_as_hidden=yes
2289 # Darwin as has some visibility support, though with a different syntax.
2290 gcc_cv_as_hidden=yes
2294 # gnu_indirect_function type is an extension proposed at
2295 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2296 # selection of function implementation
2297 AC_ARG_ENABLE(gnu-indirect-function,
2298 [AS_HELP_STRING([--enable-gnu-indirect-function],
2299 [enable the use of the @gnu_indirect_function to glibc systems])],
2300 [case $enable_gnu_indirect_function in
2302 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2303 Valid choices are 'yes' and 'no'.]) ;;
2305 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2306 if test x$enable_gnu_indirect_function = xyes; then
2307 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2308 [Define if your system supports gnu indirect functions.])
2312 if test $in_tree_ld != yes ; then
2313 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2314 if echo "$ld_ver" | grep GNU > /dev/null; then
2315 if test x"$ld_is_gold" = xyes; then
2316 # GNU gold --version looks like this:
2318 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2320 # We extract the binutils version which is more familiar and specific
2321 # than the gold version.
2322 ld_vers=`echo $ld_ver | sed -n \
2323 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2325 # GNU ld --version looks like this:
2327 # GNU ld (GNU Binutils) 2.21.51.20110225
2328 ld_vers=`echo $ld_ver | sed -n \
2329 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2331 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2332 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2333 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2334 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2338 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2341 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2342 # /usr/ccs/bin/ld has been configured.
2343 ld_ver=`$gcc_cv_ld -V 2>&1`
2344 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2345 ld_vers=`echo $ld_ver | sed -n \
2346 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2347 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2348 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2356 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2357 [[if test $in_tree_ld = yes ; then
2359 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2360 && test $in_tree_ld_is_elf = yes; then
2361 gcc_cv_ld_hidden=yes
2364 gcc_cv_ld_hidden=yes
2365 if test x"$ld_is_gold" = xyes; then
2367 elif echo "$ld_ver" | grep GNU > /dev/null; then
2369 mmix-knuth-mmixware)
2370 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2374 if test 0"$ld_date" -lt 20020404; then
2375 if test -n "$ld_date"; then
2376 # If there was date string, but was earlier than 2002-04-04, fail
2378 elif test -z "$ld_vers"; then
2379 # If there was no date string nor ld version number, something is wrong
2382 test -z "$ld_vers_patch" && ld_vers_patch=0
2383 if test "$ld_vers_major" -lt 2; then
2385 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2386 gcc_cv_ld_hidden="no"
2387 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2395 # Darwin ld has some visibility support.
2396 gcc_cv_ld_hidden=yes
2398 hppa64*-*-hpux* | ia64*-*-hpux*)
2399 gcc_cv_ld_hidden=yes
2401 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2402 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2403 # .symbolic was only added in Solaris 9 12/02.
2404 gcc_cv_ld_hidden=yes
2412 libgcc_visibility=no
2413 AC_SUBST(libgcc_visibility)
2414 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2415 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2416 libgcc_visibility=yes
2417 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2418 [Define if your assembler and linker support .hidden.])
2421 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2422 gcc_cv_ld_ro_rw_mix=unknown
2423 if test $in_tree_ld = yes ; then
2424 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2425 && test $in_tree_ld_is_elf = yes; then
2426 gcc_cv_ld_ro_rw_mix=read-write
2428 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2429 echo '.section myfoosect, "a"' > conftest1.s
2430 echo '.section myfoosect, "aw"' > conftest2.s
2431 echo '.byte 1' >> conftest2.s
2432 echo '.section myfoosect, "a"' > conftest3.s
2433 echo '.byte 0' >> conftest3.s
2434 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2435 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2436 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2437 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2438 conftest2.o conftest3.o > /dev/null 2>&1; then
2439 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2440 | sed -e '/myfoosect/!d' -e N`
2441 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2442 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2443 gcc_cv_ld_ro_rw_mix=read-only
2445 gcc_cv_ld_ro_rw_mix=read-write
2450 rm -f conftest.* conftest[123].*
2453 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2454 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2455 [Define if your linker links a mix of read-only
2456 and read-write sections into a read-write section.])
2458 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2460 gcc_AC_INITFINI_ARRAY
2462 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2463 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2471 [[# GAS versions before 2.11 do not support uleb128,
2472 # despite appearing to.
2473 # ??? There exists an elf-specific test that will crash
2474 # the assembler. Perhaps it's better to figure out whether
2475 # arbitrary sections are supported and try the test.
2476 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2477 if echo "$as_ver" | grep GNU > /dev/null; then
2478 as_vers=`echo $as_ver | sed -n \
2479 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2480 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2481 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2482 if test $as_major -eq 2 && test $as_minor -lt 11
2484 else gcc_cv_as_leb128=yes
2487 [AC_DEFINE(HAVE_AS_LEB128, 1,
2488 [Define if your assembler supports .sleb128 and .uleb128.])])
2490 # Check if we have assembler support for unwind directives.
2491 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2498 .cfi_escape 1, 2, 3, 4, 5
2502 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2503 # read-only and read-write sections, we need to make sure that the
2504 # assembler used emits read-write .eh_frame sections.
2505 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2506 if test "x$gcc_cv_objdump" != x; then
2507 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2508 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2509 gcc_cv_as_cfi_directive=no
2512 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2513 # On Solaris/x86, make sure that GCC and gas agree on using
2514 # read-only .eh_frame sections for 64-bit.
2515 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2516 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2517 sed -e /.eh_frame/!d -e N | \
2518 grep READONLY > /dev/null; then
2519 gcc_cv_as_cfi_directive=yes
2521 gcc_cv_as_cfi_directive=no
2525 gcc_cv_as_cfi_directive=yes
2530 # no objdump, err on the side of caution
2531 gcc_cv_as_cfi_directive=no
2534 gcc_cv_as_cfi_directive=yes
2538 gcc_cv_as_cfi_directive=yes
2541 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2542 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2546 .cfi_adjust_cfa_offset 64
2548 .cfi_adjust_cfa_offset 128
2551 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2552 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2553 gcc_cv_as_cfi_advance_working=yes
2557 # no objdump, err on the side of caution
2558 gcc_cv_as_cfi_advance_working=no
2560 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2561 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2562 [`if test $gcc_cv_as_cfi_directive = yes \
2563 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2564 [Define 0/1 if your assembler supports CFI directives.])
2566 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2567 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2568 gcc_cv_as_cfi_personality_directive, ,,
2571 .cfi_personality 0, symbol
2573 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2574 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2575 then echo 1; else echo 0; fi`],
2576 [Define 0/1 if your assembler supports .cfi_personality.])
2578 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2579 gcc_cv_as_cfi_sections_directive, ,,
2581 .cfi_sections .debug_frame, .eh_frame
2585 win32 | pe | cygwin* | mingw32* | uwin*)
2586 # Need to check that we generated the correct relocation for the
2587 # .debug_frame section. This was fixed for binutils 2.21.
2588 gcc_cv_as_cfi_sections_directive=no
2589 if test "x$gcc_cv_objdump" != x; then
2590 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2591 grep secrel > /dev/null; then
2592 gcc_cv_as_cfi_sections_directive=yes
2597 gcc_cv_as_cfi_sections_directive=yes
2600 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2601 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2602 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2603 then echo 1; else echo 0; fi`],
2604 [Define 0/1 if your assembler supports .cfi_sections.])
2606 # GAS versions up to and including 2.11.0 may mis-optimize
2608 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2616 .section .eh_frame,"aw",@progbits
2618 .4byte .LECIE1-.LSCIE1
2632 .4byte .LEFDE1-.LASFDE1
2634 .4byte .LASFDE1-__FRAME_BEGIN__
2642 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2643 cat > conftest.lit <<EOF
2644 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2645 0010 01000000 12000000 18000000 00000000 ................
2646 0020 08000000 04080000 0044 .........D @&t@
2648 cat > conftest.big <<EOF
2649 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2650 0010 00000001 00000012 00000018 00000000 ................
2651 0020 00000008 04000000 0844 .........D @&t@
2653 # If the assembler didn't choke, and we can objdump,
2654 # and we got the correct data, then succeed.
2655 # The text in the here-document typically retains its unix-style line
2656 # endings, while the output of objdump will use host line endings.
2657 # Therefore, use diff -b for the comparisons.
2658 if test x$gcc_cv_objdump != x \
2659 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2660 | tail -3 > conftest.got \
2661 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2662 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2664 gcc_cv_as_eh_frame=yes
2665 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2666 gcc_cv_as_eh_frame=buggy
2668 # Uh oh, what do we do now?
2669 gcc_cv_as_eh_frame=no
2672 if test $gcc_cv_as_eh_frame = buggy; then
2673 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2674 [Define if your assembler mis-optimizes .eh_frame data.])
2677 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2678 [elf,2,12,0], [--fatal-warnings],
2679 [.section .rodata.str, "aMS", @progbits, 1])
2680 if test $gcc_cv_as_shf_merge = no; then
2681 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2682 [elf,2,12,0], [--fatal-warnings],
2683 [.section .rodata.str, "aMS", %progbits, 1])
2685 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2686 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2687 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2689 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2690 gcc_cv_as_comdat_group,
2691 [elf,2,16,0], [--fatal-warnings],
2692 [.section .text,"axG",@progbits,.foo,comdat])
2693 if test $gcc_cv_as_comdat_group = yes; then
2694 gcc_cv_as_comdat_group_percent=no
2695 gcc_cv_as_comdat_group_group=no
2697 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2698 gcc_cv_as_comdat_group_percent,
2699 [elf,2,16,0], [--fatal-warnings],
2700 [.section .text,"axG",%progbits,.foo,comdat])
2701 if test $gcc_cv_as_comdat_group_percent = yes; then
2702 gcc_cv_as_comdat_group_group=no
2704 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2705 gcc_cv_as_comdat_group_group=no
2708 # Sun as uses a completely different syntax.
2713 .group foo,".text%foo",#comdat
2714 .section ".text%foo", #alloc,#execinstr,#progbits
2719 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2721 .group foo,.text%foo,#comdat
2722 .section .text%foo, "ax", @progbits
2728 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2729 gcc_cv_as_comdat_group_group,
2735 if test x"$ld_is_gold" = xyes; then
2737 elif test $in_tree_ld = yes ; then
2739 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2740 && test $in_tree_ld_is_elf = yes; then
2743 elif echo "$ld_ver" | grep GNU > /dev/null; then
2745 if test 0"$ld_date" -lt 20050308; then
2746 if test -n "$ld_date"; then
2747 # If there was date string, but was earlier than 2005-03-08, fail
2749 elif test "$ld_vers_major" -lt 2; then
2751 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2758 *-*-solaris2.1[1-9]*)
2760 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2761 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2764 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2765 # least ld version 1.2267.
2766 if test "$ld_vers_major" -gt 1; then
2768 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2770 elif test "$ld_vers_minor" -ge 2267; then
2775 # Assume linkers other than GNU ld don't support COMDAT group.
2781 # Allow overriding the automatic COMDAT group tests above.
2782 AC_ARG_ENABLE(comdat,
2783 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2784 [comdat_group="$enable_comdat"])
2785 if test $comdat_group = no; then
2786 gcc_cv_as_comdat_group=no
2787 gcc_cv_as_comdat_group_percent=no
2788 gcc_cv_as_comdat_group_group=no
2790 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2791 [`if test $gcc_cv_as_comdat_group = yes \
2792 || test $gcc_cv_as_comdat_group_percent = yes \
2793 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2794 [Define 0/1 if your assembler and linker support COMDAT groups.])
2796 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2797 gcc_cv_as_discriminator,
2801 .loc 1 1 0 discriminator 1],,
2802 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2803 [Define if your assembler supports the .loc discriminator sub-directive.])])
2805 # Thread-local storage - the check is heavily parameterized.
2814 .section ".tdata","awT",@progbits
2817 ldq $27,__tls_get_addr($29) !literal!1
2818 lda $16,foo($29) !tlsgd!1
2819 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2820 ldq $27,__tls_get_addr($29) !literal!2
2821 lda $16,foo($29) !tlsldm!2
2822 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2823 ldq $1,foo($29) !gotdtprel
2824 ldah $2,foo($29) !dtprelhi
2825 lda $3,foo($2) !dtprello
2826 lda $4,foo($29) !dtprel
2827 ldq $1,foo($29) !gottprel
2828 ldah $2,foo($29) !tprelhi
2829 lda $3,foo($2) !tprello
2830 lda $4,foo($29) !tprel'
2833 tls_as_opt=--fatal-warnings
2835 cris-*-*|crisv32-*-*)
2837 .section ".tdata","awT",@progbits
2844 tls_as_opt=--fatal-warnings
2848 .section ".tdata","awT",@progbits
2860 .section ".tdata","awT",@progbits
2864 addil LT%foo-$tls_gdidx$,gp
2865 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2868 addil LT%foo-$tls_ldidx$,gp
2870 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2871 addil LR%foo-$tls_dtpoff$,%ret0
2872 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2874 addil LT%foo-$tls_ieoff$,gp
2875 ldw RT%foo-$tls_ieoff$(%r1),%t2
2878 addil LR%foo-$tls_leoff$,%t1
2879 ldo RR%foo-$tls_leoff$(%r1),%t2'
2882 tls_as_opt=--fatal-warnings
2886 .section ".tdata","awT",%progbits
2897 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2899 i[34567]86-*-solaris2.*)
2901 tga_func=___tls_get_addr
2903 x86_64-*-solaris2.1[0-9]*)
2905 tga_func=__tls_get_addr
2911 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2913 .section .tdata,"awt",@progbits'
2917 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2918 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2922 .section ".tdata","awT",@progbits'
2925 tls_as_opt="--fatal-warnings"
2927 conftest_s="$conftest_s
2931 leal foo@tlsgd(,%ebx,1), %eax
2932 leal foo@tlsldm(%ebx), %eax
2933 leal foo@dtpoff(%eax), %edx
2934 movl foo@gottpoff(%ebx), %eax
2935 subl foo@gottpoff(%ebx), %eax
2936 addl foo@gotntpoff(%ebx), %eax
2937 movl foo@indntpoff, %eax
2938 movl \$foo@tpoff, %eax
2939 subl \$foo@tpoff, %eax
2940 leal foo@ntpoff(%ecx), %eax"
2944 .section ".tdata","awT",@progbits
2948 leaq foo@TLSGD(%rip), %rdi
2949 leaq foo@TLSLD(%rip), %rdi
2950 leaq foo@DTPOFF(%rax), %rdx
2951 movq foo@GOTTPOFF(%rip), %rax
2952 movq $foo@TPOFF, %rax'
2955 tls_as_opt=--fatal-warnings
2959 .section ".tdata","awT",@progbits
2962 addl r16 = @ltoff(@dtpmod(foo#)), gp
2963 addl r17 = @ltoff(@dtprel(foo#)), gp
2964 addl r18 = @ltoff(@tprel(foo#)), gp
2965 addl r19 = @dtprel(foo#), gp
2966 adds r21 = @dtprel(foo#), r13
2967 movl r23 = @dtprel(foo#)
2968 addl r20 = @tprel(foo#), gp
2969 adds r22 = @tprel(foo#), r13
2970 movl r24 = @tprel(foo#)'
2973 tls_as_opt=--fatal-warnings
2977 .section .tdata,"awT",@progbits
2981 addik r5,r20,x@TLSGD
2982 addik r5,r20,x@TLSLDM'
2985 tls_as_opt='--fatal-warnings'
2989 .section .tdata,"awT",@progbits
2993 addiu $4, $28, %tlsgd(x)
2994 addiu $4, $28, %tlsldm(x)
2995 lui $4, %dtprel_hi(x)
2996 addiu $4, $4, %dtprel_lo(x)
2997 lw $4, %gottprel(x)($28)
2998 lui $4, %tprel_hi(x)
2999 addiu $4, $4, %tprel_lo(x)'
3002 tls_as_opt='-32 --fatal-warnings'
3006 .section .tdata,"awT",@progbits
3011 move.l x@TLSGD(%a5),%a0
3012 move.l x@TLSLDM(%a5),%a0
3013 move.l x@TLSLDO(%a5),%a0
3014 move.l x@TLSIE(%a5),%a0
3015 move.l x@TLSLE(%a5),%a0'
3018 tls_as_opt='--fatal-warnings'
3022 .section ".tdata","awT",%progbits
3026 add x0, x0, #:tlsgd_lo12:x
3031 tls_as_opt='--fatal-warnings'
3035 .extern __get_tpointer
3053 .section ".tdata","awT",@progbits
3061 addi 3,2,ld0@got@tlsgd
3067 addi 3,2,x1@got@tlsld
3073 addis 9,3,x2@dtprel@ha
3074 addi 9,9,x2@dtprel@l
3077 ld 9,x3@got@dtprel(2)
3083 tls_as_opt="-a64 --fatal-warnings"
3087 .section ".tdata","awT",@progbits
3095 addi 3,31,ld0@got@tlsgd
3097 addi 3,31,x1@got@tlsld
3100 addis 9,3,x2@dtprel@ha
3101 addi 9,9,x2@dtprel@l
3102 lwz 9,x3@got@tprel(31)
3105 addis 9,2,x2@tprel@ha
3106 addi 9,9,x2@tprel@l'
3109 tls_as_opt="-a32 --fatal-warnings"
3113 .section ".tdata","awT",@progbits
3122 l %r1,foo@GOTNTPOFF(%r12)
3123 l %r1,0(%r1):tls_load:foo
3124 bas %r14,0(%r1,%r13):tls_gdcall:foo
3125 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3128 tls_as_opt="-m31 --fatal-warnings"
3132 .section ".tdata","awT",@progbits
3140 lg %r1,foo@GOTNTPOFF(%r12)
3141 larl %r1,foo@INDNTPOFF
3142 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3143 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3146 tls_as_opt="-m64 -Aesame --fatal-warnings"
3148 sh-*-* | sh[34]-*-*)
3150 .section ".tdata","awT",@progbits
3160 tls_as_opt=--fatal-warnings
3164 sparc*-sun-solaris2.*)
3166 tga_func=__tls_get_addr
3172 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3174 .section ".tdata",#alloc,#write,#tls'
3179 .section ".tdata","awT",@progbits'
3182 tls_as_opt="-32 --fatal-warnings"
3184 conftest_s="$conftest_s
3187 sethi %tgd_hi22(foo), %o0
3188 add %o0, %tgd_lo10(foo), %o1
3189 add %l7, %o1, %o0, %tgd_add(foo)
3190 call __tls_get_addr, %tgd_call(foo)
3191 sethi %tldm_hi22(foo), %l1
3192 add %l1, %tldm_lo10(foo), %l2
3193 add %l7, %l2, %o0, %tldm_add(foo)
3194 call __tls_get_addr, %tldm_call(foo)
3195 sethi %tldo_hix22(foo), %l3
3196 xor %l3, %tldo_lox10(foo), %l4
3197 add %o0, %l4, %l5, %tldo_add(foo)
3198 sethi %tie_hi22(foo), %o3
3199 add %o3, %tie_lo10(foo), %o3
3200 ld [%l7 + %o3], %o2, %tie_ld(foo)
3201 add %g7, %o2, %o4, %tie_add(foo)
3202 sethi %tle_hix22(foo), %l1
3203 xor %l1, %tle_lox10(foo), %o5
3204 ld [%g7 + %o5], %o1"
3208 .section ".tdata","awT",@progbits
3211 addli r0, zero, tls_gd(foo)
3212 auli r0, zero, tls_gd_ha16(foo)
3213 addli r0, r0, tls_gd_lo16(foo)
3215 addli r0, zero, tls_ie(foo)
3216 auli r0, r0, tls_ie_ha16(foo)
3217 addli r0, r0, tls_ie_lo16(foo)'
3220 tls_as_opt="--fatal-warnings"
3224 .section ".tdata","awT",@progbits
3227 shl16insli r0, zero, hw0_last_tls_gd(foo)
3228 shl16insli r0, zero, hw1_last_tls_gd(foo)
3229 shl16insli r0, r0, hw0_tls_gd(foo)
3231 shl16insli r0, zero, hw1_last_tls_ie(foo)
3232 shl16insli r0, r0, hw0_tls_ie(foo)'
3235 tls_as_opt="--fatal-warnings"
3239 .section ".tdata","awT",@progbits
3242 movi a8, foo@TLSFUNC
3243 movi a10, foo@TLSARG
3244 callx8.tls a8, foo@TLSCALL'
3251 if test "x$enable_tls" = xno ; then
3252 : # TLS explicitly disabled.
3253 elif test "x$enable_tls" = xyes ; then
3254 set_have_as_tls=yes # TLS explicitly enabled.
3255 elif test -z "$tls_first_major"; then
3256 : # If we don't have a check, assume no support.
3258 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3259 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3260 [set_have_as_tls=yes])
3263 # TLS was introduced in the Solaris 9 FCS release. Support for GNU-style
3264 # TLS on x86 was only introduced in Solaris 9 4/04, replacing the earlier
3265 # Sun style that Sun ld and GCC don't support any longer.
3267 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3269 # Check ld and ld.so.1 TLS support.
3270 if echo "$ld_ver" | grep GNU > /dev/null; then
3271 # Assume all interesting versions of GNU ld have TLS support.
3272 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3276 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3278 min_tls_ld_vers_minor=374
3280 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3281 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3282 min_tls_ld_vers_minor=343
3285 if test "$ld_vers_major" -gt 1 || \
3286 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3292 AC_MSG_RESULT($ld_tls_support)
3295 save_LDFLAGS="$LDFLAGS"
3299 AC_MSG_CHECKING(library containing $tga_func)
3300 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3301 # (32-bit x86) only lived in libthread, so check for that. Keep
3302 # set_have_as_tls if found, disable if not.
3303 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3304 # Clear LIBS if we cannot support TLS.
3305 if test $set_have_as_tls = no; then
3308 # Always define LIB_TLS_SPEC, even without TLS support.
3309 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3310 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3311 AC_MSG_RESULT($LIBS)
3314 LDFLAGS="$save_LDFLAGS"
3317 if test $set_have_as_tls = yes ; then
3318 AC_DEFINE(HAVE_AS_TLS, 1,
3319 [Define if your assembler and linker support thread-local storage.])
3322 # Target-specific assembler checks.
3324 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3325 gcc_cv_ld_static_dynamic=no
3326 gcc_cv_ld_static_option='-Bstatic'
3327 gcc_cv_ld_dynamic_option='-Bdynamic'
3328 if test $in_tree_ld = yes ; then
3329 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3330 gcc_cv_ld_static_dynamic=yes
3332 elif test x$gcc_cv_ld != x; then
3333 # Check if linker supports -Bstatic/-Bdynamic option
3334 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3335 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3336 gcc_cv_ld_static_dynamic=yes
3339 # AIX ld uses -b flags
3340 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3341 gcc_cv_ld_static_dynamic=yes
3342 gcc_cv_ld_static_option="-bstatic"
3343 gcc_cv_ld_dynamic_option="-bdynamic"
3345 # HP-UX ld uses -a flags to select between shared and archive.
3347 if test x"$gnu_ld" = xno; then
3348 gcc_cv_ld_static_dynamic=yes
3349 gcc_cv_ld_static_option="-aarchive_shared"
3350 gcc_cv_ld_dynamic_option="-adefault"
3353 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3355 gcc_cv_ld_static_dynamic=yes
3360 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3361 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3362 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3363 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3364 [Define to the linker option to disable use of shared objects.])
3365 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3366 [Define to the linker option to enable use of shared objects.])
3368 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3370 if test x"$demangler_in_ld" = xyes; then
3371 AC_MSG_CHECKING(linker --demangle support)
3372 gcc_cv_ld_demangle=no
3373 if test $in_tree_ld = yes; then
3374 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3375 gcc_cv_ld_demangle=yes
3377 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3378 # Check if the GNU linker supports --demangle option
3379 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3380 gcc_cv_ld_demangle=yes
3383 if test x"$gcc_cv_ld_demangle" = xyes; then
3384 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3385 [Define if your linker supports --demangle option.])
3387 AC_MSG_RESULT($gcc_cv_ld_demangle)
3390 AC_MSG_CHECKING(linker plugin support)
3392 if test -f liblto_plugin.la; then
3393 save_ld_ver="$ld_ver"
3394 save_ld_vers_major="$ld_vers_major"
3395 save_ld_vers_minor="$ld_vers_minor"
3396 save_ld_is_gold="$ld_is_gold"
3400 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3402 # FIXME: ld_is_gold?
3403 ld_vers_major="$gcc_cv_gld_major_version"
3404 ld_vers_minor="$gcc_cv_gld_minor_version"
3406 # Determine plugin linker version.
3407 # FIXME: Partial duplicate from above, generalize.
3409 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3410 if echo "$ld_ver" | grep GNU > /dev/null; then
3411 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3413 ld_vers=`echo $ld_ver | sed -n \
3414 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3416 ld_vers=`echo $ld_ver | sed -n \
3417 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3419 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3420 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3425 # Determine plugin support.
3426 if echo "$ld_ver" | grep GNU > /dev/null; then
3427 # Require GNU ld or gold 2.21+ for plugin support by default.
3428 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3430 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3431 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3436 ld_ver="$save_ld_ver"
3437 ld_vers_major="$save_ld_vers_major"
3438 ld_vers_minor="$save_ld_vers_minor"
3439 ld_is_gold="$save_ld_is_gold"
3441 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3442 [Define to the level of your linker's plugin support.])
3443 AC_MSG_RESULT($gcc_cv_lto_plugin)
3448 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3449 AC_ARG_ENABLE(fix-cortex-a53-835769,
3451 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3452 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3453 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3454 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3459 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3464 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3465 Valid choices are 'yes' and 'no'.])
3472 # All TARGET_ABI_OSF targets.
3473 alpha*-*-linux* | alpha*-*-*bsd*)
3474 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3475 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3478 extbl $3, $2, $3 !lituse_bytoff!1
3479 ldq $2, a($29) !literal!1
3480 ldq $4, b($29) !literal!2
3481 ldq_u $3, 0($2) !lituse_base!1
3482 ldq $27, f($29) !literal!5
3483 jsr $26, ($27), f !lituse_jsr!5
3484 ldah $29, 0($26) !gpdisp!3
3485 lda $0, c($29) !gprel
3486 ldah $1, d($29) !gprelhigh
3487 lda $1, d($1) !gprellow
3488 lda $29, 0($29) !gpdisp!3],,
3489 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3490 [Define if your assembler supports explicit relocations.])])
3491 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3492 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3495 ldq $27, a($29) !literal!1
3496 jsr $26, ($27), a !lituse_jsrdirect!1],,
3497 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3498 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3502 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3503 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3504 [-no-mul-bug-abort], [.text],,
3505 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3506 [Define if your assembler supports the -no-mul-bug-abort option.])])
3510 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3511 [.register %g2, #scratch],,
3512 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3513 [Define if your assembler supports .register.])])
3515 gcc_GAS_CHECK_FEATURE([@%:@nobits], gcc_cv_as_sparc_nobits,,,
3516 [.section "nobits",#alloc,#write,#nobits
3517 .section "progbits",#alloc,#write,#progbits])
3518 AC_DEFINE_UNQUOTED(HAVE_AS_SPARC_NOBITS,
3519 [`if test $gcc_cv_as_sparc_nobits = yes; then echo 1; else echo 0; fi`],
3520 [Define to 1 if your assembler supports #nobits, 0 otherwise.])
3522 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3524 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3525 [Define if your assembler supports -relax option.])])
3527 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3528 gcc_cv_as_sparc_gotdata_op,,
3535 sethi %gdop_hix22(foo), %g1
3536 xor %g1, %gdop_lox10(foo), %g1
3537 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3538 [if test x$gcc_cv_ld != x \
3539 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3540 if test x$gcc_cv_objdump != x; then
3541 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3542 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3543 gcc_cv_as_sparc_gotdata_op=no
3545 gcc_cv_as_sparc_gotdata_op=yes
3550 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3551 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3553 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3554 gcc_cv_as_sparc_ua_pcrel,,
3562 .uaword %r_disp32(foo)],
3563 [if test x$gcc_cv_ld != x \
3564 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3565 gcc_cv_as_sparc_ua_pcrel=yes
3568 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3569 [Define if your assembler and linker support unaligned PC relative relocs.])
3571 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3572 gcc_cv_as_sparc_ua_pcrel_hidden,,
3577 .uaword %r_disp32(foo)
3578 .byte 0x32, 0x33, 0x34
3583 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3584 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3585 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3586 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3587 if $gcc_cv_objdump -R conftest 2> /dev/null \
3588 | grep 'DISP32' > /dev/null 2>&1; then
3591 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3595 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3596 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3597 ]) # unaligned pcrel relocs
3599 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3600 gcc_cv_as_sparc_offsetable_lo10,,
3603 or %g1, %lo(ab) + 12, %g1
3604 or %g1, %lo(ab + 12), %g1],
3605 [if test x$gcc_cv_objdump != x \
3606 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3607 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3608 gcc_cv_as_sparc_offsetable_lo10=yes
3610 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3611 [Define if your assembler supports offsetable %lo().])])
3613 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3614 gcc_cv_as_sparc_fmaf,,
3617 .register %g2, #scratch
3618 .register %g3, #scratch
3620 fmaddd %f0, %f2, %f4, %f6
3621 addxccc %g1, %g2, %g3
3622 fsrl32 %f2, %f4, %f8
3623 fnaddd %f10, %f12, %f14],,
3624 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3625 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3627 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3628 gcc_cv_as_sparc_sparc4,,
3631 .register %g2, #scratch
3632 .register %g3, #scratch
3635 1: cwbneg %g2, %g3, 1f
3638 aes_kexpand0 %f4, %f6, %f8
3639 des_round %f38, %f40, %f42, %f44
3640 camellia_f %f54, %f56, %f58, %f60
3641 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3642 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3643 [Define if your assembler supports SPARC4 instructions.])])
3645 gcc_GAS_CHECK_FEATURE([LEON instructions],
3646 gcc_cv_as_sparc_leon,,
3649 .register %g2, #scratch
3650 .register %g3, #scratch
3654 casa [[%g2]] 0xb, %g3, %g1],,
3655 [AC_DEFINE(HAVE_AS_LEON, 1,
3656 [Define if your assembler supports LEON instructions.])])
3660 i[34567]86-*-* | x86_64-*-*)
3664 # Full C++ conformance when using a shared libstdc++-v3 requires some
3665 # support from the Cygwin DLL, which in more recent versions exports
3666 # wrappers to aid in interposing and redirecting operators new, delete,
3667 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3668 # are configuring for a version of Cygwin that exports the wrappers.
3669 if test x$host = x$target; then
3670 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3672 # Can't check presence of libc functions during cross-compile, so
3673 # we just have to assume we're building for an up-to-date target.
3674 gcc_ac_cygwin_dll_wrappers=yes
3676 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3677 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3678 [Define if you want to generate code by default that assumes that the
3679 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3682 cygwin* | pe | mingw32* | interix*)
3683 # Recent binutils allows the three-operand form of ".comm" on PE. This
3684 # definition is used unconditionally to initialise the default state of
3685 # the target option variable that governs usage of the feature.
3686 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3687 [2,19,52],,[.comm foo,1,32])
3688 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3689 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3690 [Define if your assembler supports specifying the alignment
3691 of objects allocated using the GAS .comm command.])
3692 # Used for DWARF 2 in PE
3693 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3694 gcc_cv_as_ix86_pe_secrel32,
3700 [if test x$gcc_cv_ld != x \
3701 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3702 gcc_cv_as_ix86_pe_secrel32=yes
3705 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3706 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3707 # Test if the assembler supports the extended form of the .section
3708 # directive that specifies section alignment. LTO support uses this,
3709 # but normally only after installation, so we warn but don't fail the
3710 # configure if LTO is enabled but the assembler does not support it.
3711 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3712 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3713 if test x$gcc_cv_as_section_has_align != xyes; then
3714 case ",$enable_languages," in
3716 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3720 # Test if the assembler supports the section flag 'e' for specifying
3721 # an excluded section.
3722 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3726 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3727 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3728 [Define if your assembler supports specifying the section flag e.])
3732 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3733 gcc_cv_as_ix86_filds,,,
3734 [filds mem; fists mem],,
3735 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3736 [Define if your assembler uses filds and fists mnemonics.])])
3738 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3739 gcc_cv_as_ix86_fildq,,,
3740 [fildq mem; fistpq mem],,
3741 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3742 [Define if your assembler uses fildq and fistq mnemonics.])])
3744 gcc_GAS_CHECK_FEATURE([cmov syntax],
3745 gcc_cv_as_ix86_cmov_sun_syntax,,,
3746 [cmovl.l %edx, %eax],,
3747 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3748 [Define if your assembler supports the Sun syntax for cmov.])])
3750 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3751 gcc_cv_as_ix86_ffreep,,,
3753 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3754 [Define if your assembler supports the ffreep mnemonic.])])
3756 gcc_GAS_CHECK_FEATURE([.quad directive],
3757 gcc_cv_as_ix86_quad,,,
3759 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3760 [Define if your assembler supports the .quad directive.])])
3762 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3763 gcc_cv_as_ix86_sahf,,,
3766 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3767 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3769 gcc_GAS_CHECK_FEATURE([hle prefixes],
3770 gcc_cv_as_ix86_hle,,,
3771 [lock xacquire cmpxchg %esi, (%ecx)],,
3772 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3773 [Define if your assembler supports HLE prefixes.])])
3775 gcc_GAS_CHECK_FEATURE([swap suffix],
3776 gcc_cv_as_ix86_swap,,,
3777 [movl.s %esp, %ebp],,
3778 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3779 [Define if your assembler supports the swap suffix.])])
3781 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3782 gcc_cv_as_ix86_diff_sect_delta,,,
3790 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3791 [Define if your assembler supports the subtraction of symbols in different sections.])])
3793 # These two are used unconditionally by i386.[ch]; it is to be defined
3794 # to 1 if the feature is present, 0 otherwise.
3795 as_ix86_gotoff_in_data_opt=
3796 if test x$gas = xyes; then
3797 as_ix86_gotoff_in_data_opt="--32"
3799 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3800 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
3801 [$as_ix86_gotoff_in_data_opt],
3807 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3808 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3809 [Define true if the assembler supports '.long foo@GOTOFF'.])
3811 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3812 gcc_cv_as_ix86_rep_lock_prefix,,,
3818 lock addl %edi, (%eax,%esi)
3819 lock orl $0, (%esp)],,
3820 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3821 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3823 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
3824 gcc_cv_as_ix86_ud2,,,
3826 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
3827 [Define if your assembler supports the 'ud2' mnemonic.])])
3829 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3830 gcc_cv_as_ix86_tlsgdplt,,,
3831 [call tls_gd@tlsgdplt],
3832 [if test x$gcc_cv_ld != x \
3833 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3834 gcc_cv_as_ix86_tlsgdplt=yes
3837 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3838 [Define if your assembler and linker support @tlsgdplt.])])
3840 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3841 gcc_cv_as_ix86_tlsldmplt,,,
3843 call tls_ld@tlsldmplt],
3844 [if test x$gcc_cv_ld != x \
3845 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3846 gcc_cv_as_ix86_tlsldmplt=yes
3849 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3850 [Define if your assembler and linker support @tlsldmplt.])])
3855 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3856 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3858 addl r15 = @ltoffx(x#), gp
3860 ld8.mov r16 = [[r15]], x#],,
3861 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3862 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3868 *-*-aix*) conftest_s=' .machine "pwr5"
3872 gcc_GAS_CHECK_FEATURE([.machine directive support],
3873 gcc_cv_as_machine_directive,,,
3874 [ .machine ppc7400])
3875 if test x$gcc_cv_as_machine_directive != xyes; then
3876 echo "*** This target requires an assembler supporting \".machine\"" >&2
3877 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3878 test x$build = x$target && exit 1
3882 *) conftest_s=' .machine power4
3887 gcc_GAS_CHECK_FEATURE([mfcr field support],
3888 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3890 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3891 [Define if your assembler supports mfcr field.])])
3894 *-*-aix*) conftest_s=' .machine "pwr5"
3897 *) conftest_s=' .machine power5
3902 gcc_GAS_CHECK_FEATURE([popcntb support],
3903 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3905 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3906 [Define if your assembler supports popcntb field.])])
3909 *-*-aix*) conftest_s=' .machine "pwr5x"
3912 *) conftest_s=' .machine power5
3917 gcc_GAS_CHECK_FEATURE([fp round support],
3918 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3920 [AC_DEFINE(HAVE_AS_FPRND, 1,
3921 [Define if your assembler supports fprnd.])])
3924 *-*-aix*) conftest_s=' .machine "pwr6"
3927 *) conftest_s=' .machine power6
3932 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3933 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3935 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3936 [Define if your assembler supports mffgpr and mftgpr.])])
3939 *-*-aix*) conftest_s=' .csect .text[[PR]]
3941 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3945 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3946 *) conftest_s=' .text
3948 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3951 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3952 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3954 [AC_DEFINE(HAVE_AS_REL16, 1,
3955 [Define if your assembler supports R_PPC_REL16 relocs.])])
3958 *-*-aix*) conftest_s=' .machine "pwr6"
3961 *) conftest_s=' .machine power6
3966 gcc_GAS_CHECK_FEATURE([compare bytes support],
3967 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3969 [AC_DEFINE(HAVE_AS_CMPB, 1,
3970 [Define if your assembler supports cmpb.])])
3973 *-*-aix*) conftest_s=' .machine "pwr6"
3976 *) conftest_s=' .machine power6
3981 gcc_GAS_CHECK_FEATURE([decimal float support],
3982 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3984 [AC_DEFINE(HAVE_AS_DFP, 1,
3985 [Define if your assembler supports DFP instructions.])])
3988 *-*-aix*) conftest_s=' .machine "pwr7"
3991 *) conftest_s=' .machine power7
3996 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3997 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3999 [AC_DEFINE(HAVE_AS_VSX, 1,
4000 [Define if your assembler supports VSX instructions.])])
4003 *-*-aix*) conftest_s=' .machine "pwr7"
4006 *) conftest_s=' .machine power7
4011 gcc_GAS_CHECK_FEATURE([popcntd support],
4012 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4014 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4015 [Define if your assembler supports POPCNTD instructions.])])
4018 *-*-aix*) conftest_s=' .machine "pwr8"
4019 .csect .text[[PR]]';;
4020 *) conftest_s=' .machine power8
4024 gcc_GAS_CHECK_FEATURE([power8 support],
4025 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4027 [AC_DEFINE(HAVE_AS_POWER8, 1,
4028 [Define if your assembler supports POWER8 instructions.])])
4031 *-*-aix*) conftest_s=' .csect .text[[PR]]
4033 *) conftest_s=' .text
4037 gcc_GAS_CHECK_FEATURE([lwsync support],
4038 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4040 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4041 [Define if your assembler supports LWSYNC instructions.])])
4044 *-*-aix*) conftest_s=' .machine "476"
4047 *) conftest_s=' .machine "476"
4052 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4053 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4055 [AC_DEFINE(HAVE_AS_DCI, 1,
4056 [Define if your assembler supports the DCI/ICI instructions.])])
4058 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4059 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4060 [.gnu_attribute 4,1],,
4061 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4062 [Define if your assembler supports .gnu_attribute.])])
4064 gcc_GAS_CHECK_FEATURE([tls marker support],
4065 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4066 [ bl __tls_get_addr(x@tlsgd)],,
4067 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4068 [Define if your assembler supports arg info for __tls_get_addr.])])
4072 gcc_GAS_CHECK_FEATURE([.ref support],
4073 gcc_cv_as_aix_ref, [2,21,0],,
4074 [ .csect stuff[[rw]]
4080 [AC_DEFINE(HAVE_AS_REF, 1,
4081 [Define if your assembler supports .ref])])
4087 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4088 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4089 [ lw $4,%gp_rel(foo)($4)],,
4090 [if test x$target_cpu_default = x
4091 then target_cpu_default=MASK_EXPLICIT_RELOCS
4092 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4094 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4095 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4096 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4097 [Define if the assembler understands -mno-shared.])])
4099 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4100 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4101 [.gnu_attribute 4,1],,
4102 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4103 [Define if your assembler supports .gnu_attribute.])])
4105 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4106 gcc_cv_as_mips_dtprelword, [2,18,0],,
4107 [.section .tdata,"awT",@progbits
4111 .dtprelword x+0x8000],,
4112 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4113 [Define if your assembler supports .dtprelword.])])
4115 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4116 gcc_cv_as_mips_dspr1_mult,,,
4126 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4127 [Define if your assembler supports DSPR1 mult.])])
4129 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4130 gcc_cv_as_ld_jalr_reloc=no
4131 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4132 if test $in_tree_ld = yes ; then
4133 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4134 && test $in_tree_ld_is_elf = yes; then
4135 gcc_cv_as_ld_jalr_reloc=yes
4137 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4138 echo ' .ent x' > conftest.s
4139 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
4140 echo ' ld $25,%call16(y)($28)' >> conftest.s
4141 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4142 echo '1: jalr $25' >> conftest.s
4143 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4144 echo '1: jalr $25' >> conftest.s
4145 echo ' .end x' >> conftest.s
4146 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4147 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4148 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4149 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4150 gcc_cv_as_ld_jalr_reloc=yes
4156 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4157 if test x$target_cpu_default = x; then
4158 target_cpu_default=MASK_RELAX_PIC_CALLS
4160 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4163 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4165 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4166 [gcc_cv_ld_mips_personality_relaxation],
4167 [gcc_cv_ld_mips_personality_relaxation=no
4168 if test $in_tree_ld = yes ; then
4169 if test "$gcc_cv_gld_major_version" -eq 2 \
4170 -a "$gcc_cv_gld_minor_version" -ge 21 \
4171 -o "$gcc_cv_gld_major_version" -gt 2; then
4172 gcc_cv_ld_mips_personality_relaxation=yes
4174 elif test x$gcc_cv_as != x \
4175 -a x$gcc_cv_ld != x \
4176 -a x$gcc_cv_readelf != x ; then
4177 cat > conftest.s <<EOF
4179 .cfi_personality 0x80,indirect_ptr
4186 .section .data,"aw",@progbits
4190 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4191 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4192 if $gcc_cv_readelf -d conftest 2>&1 \
4193 | grep TEXTREL > /dev/null 2>&1; then
4195 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4196 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4199 gcc_cv_ld_mips_personality_relaxation=yes
4203 rm -f conftest.s conftest.o conftest])
4204 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4205 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4206 [Define if your linker can relax absolute .eh_frame personality
4207 pointers into PC-relative form.])
4212 # Mips and HP-UX need the GNU assembler.
4213 # Linux on IA64 might be able to use the Intel assembler.
4216 mips*-*-* | *-*-hpux* )
4217 if test x$gas_flag = xyes \
4218 || test x"$host" != x"$build" \
4219 || test ! -x "$gcc_cv_as" \
4220 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4223 echo "*** This configuration requires the GNU assembler" >&2
4229 # ??? Not all targets support dwarf2 debug_line, even within a version
4230 # of gas. Moreover, we need to emit a valid instruction to trigger any
4231 # info to the output file. So, as supported targets are added to gas 2.11,
4232 # add some instruction here to (also) show we expect this might work.
4233 # ??? Once 2.11 is released, probably need to add first known working
4234 # version to the per-target configury.
4236 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4237 | pa | rs6000 | score | sparc | spu | tilegx | tilepro | xstormy16 | xtensa)
4247 if test x"$insn" != x; then
4249 .file 1 \"conftest.s\"
4252 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4253 gcc_cv_as_dwarf2_debug_line,
4254 [elf,2,11,0],, [$conftest_s],
4255 [if test x$gcc_cv_objdump != x \
4256 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4257 | grep debug_line > /dev/null 2>&1; then
4258 gcc_cv_as_dwarf2_debug_line=yes
4261 # The .debug_line file table must be in the exact order that
4262 # we specified the files, since these indices are also used
4263 # by DW_AT_decl_file. Approximate this test by testing if
4264 # the assembler bitches if the same index is assigned twice.
4265 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4266 gcc_cv_as_dwarf2_file_buggy,,,
4270 if test $gcc_cv_as_dwarf2_debug_line = yes \
4271 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4272 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4273 [Define if your assembler supports dwarf2 .file/.loc directives,
4274 and preserves file table indices exactly as given.])
4277 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4278 gcc_cv_as_gdwarf2_flag,
4279 [elf,2,11,0], [--gdwarf2], [$insn],,
4280 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4281 [Define if your assembler supports the --gdwarf2 option.])])
4283 gcc_GAS_CHECK_FEATURE([--gstabs option],
4284 gcc_cv_as_gstabs_flag,
4285 [elf,2,11,0], [--gstabs], [$insn],
4286 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4287 # and warns about it, but still exits successfully. So check for
4289 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4291 else gcc_cv_as_gstabs_flag=yes
4293 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4294 [Define if your assembler supports the --gstabs option.])])
4296 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4297 gcc_cv_as_debug_prefix_map_flag,
4298 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4299 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4300 [Define if your assembler supports the --debug-prefix-map option.])])
4303 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4306 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4307 [Define if your assembler supports .lcomm with an alignment field.])])
4309 AC_ARG_ENABLE(gnu-unique-object,
4310 [AS_HELP_STRING([--enable-gnu-unique-object],
4311 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4312 [case $enable_gnu_unique_object in
4314 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4315 Valid choices are 'yes' and 'no'.]) ;;
4317 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4319 [.type foo, '$target_type_format_char'gnu_unique_object],,
4320 # We need to unquote above to to use the definition from config.gcc.
4321 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4322 [[if test x$host = x$build -a x$host = x$target &&
4323 ldd --version 2>/dev/null &&
4324 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4325 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4326 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4327 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4328 if test "$glibcnum" -ge 2011 ; then
4329 enable_gnu_unique_object=yes
4332 if test x$enable_gnu_unique_object = xyes; then
4333 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4334 [Define if your assembler supports @gnu_unique_object.])
4337 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4338 [gcc_cv_as_line_zero],
4339 [gcc_cv_as_line_zero=no
4340 if test $in_tree_gas = yes; then
4341 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4342 elif test "x$gcc_cv_as" != x; then
4343 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4344 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4345 test "x`cat conftest.out`" = x
4347 gcc_cv_as_line_zero=yes
4349 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4350 cat conftest.s >&AS_MESSAGE_LOG_FD
4351 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4352 cat conftest.out >&AS_MESSAGE_LOG_FD
4354 rm -f conftest.o conftest.s conftest.out
4356 if test "x$gcc_cv_as_line_zero" = xyes; then
4357 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4358 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4361 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4362 gcc_cv_ld_eh_frame_hdr=no
4363 if test $in_tree_ld = yes ; then
4364 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4365 && test $in_tree_ld_is_elf = yes; then
4366 gcc_cv_ld_eh_frame_hdr=yes
4368 elif test x$gcc_cv_ld != x; then
4369 if echo "$ld_ver" | grep GNU > /dev/null; then
4370 # Check if linker supports --eh-frame-hdr option
4371 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4372 gcc_cv_ld_eh_frame_hdr=yes
4377 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4378 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4379 gcc_cv_ld_eh_frame_hdr=yes
4385 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4386 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4387 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4388 [Define if your linker supports .eh_frame_hdr.])
4390 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4392 AC_MSG_CHECKING(linker position independent executable support)
4394 if test $in_tree_ld = yes ; then
4395 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4396 && test $in_tree_ld_is_elf = yes; then
4399 elif test x$gcc_cv_ld != x; then
4400 # Check if linker supports -pie option
4401 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4405 if test x"$gcc_cv_ld_pie" = xyes; then
4406 AC_DEFINE(HAVE_LD_PIE, 1,
4407 [Define if your linker supports -pie option.])
4409 AC_MSG_RESULT($gcc_cv_ld_pie)
4411 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4412 gcc_cv_ld_eh_gc_sections=no
4413 if test $in_tree_ld = yes ; then
4414 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4415 && test $in_tree_ld_is_elf = yes; then
4416 gcc_cv_ld_eh_gc_sections=yes
4418 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4419 cat > conftest.s <<EOF
4422 .type _start, @function
4425 .size _start, .-_start
4426 .section .text.foo,"ax",@progbits
4427 .type foo, @function
4431 .section .gcc_except_table.foo,"a",@progbits
4434 .section .eh_frame,"a",@progbits
4437 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4438 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4439 | grep "gc-sections option ignored" > /dev/null; then
4440 gcc_cv_ld_eh_gc_sections=no
4441 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4442 | grep gcc_except_table > /dev/null; then
4443 gcc_cv_ld_eh_gc_sections=yes
4444 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4445 if test x$gcc_cv_as_comdat_group != xyes; then
4446 gcc_cv_ld_eh_gc_sections=no
4447 cat > conftest.s <<EOF
4450 .type _start, @function
4453 .size _start, .-_start
4454 .section .gnu.linkonce.t.foo,"ax",@progbits
4455 .type foo, @function
4459 .section .gcc_except_table.foo,"a",@progbits
4462 .section .eh_frame,"a",@progbits
4465 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4466 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4467 | grep "gc-sections option ignored" > /dev/null; then
4468 gcc_cv_ld_eh_gc_sections=no
4469 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4470 | grep gcc_except_table > /dev/null; then
4471 gcc_cv_ld_eh_gc_sections=yes
4477 rm -f conftest.s conftest.o conftest
4481 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4482 gcc_cv_ld_eh_gc_sections=no
4485 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4486 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4487 [Define if your linker supports garbage collection of
4488 sections in presence of EH frames.])
4490 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4492 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4493 gcc_cv_ld_eh_gc_sections_bug=no
4494 if test $in_tree_ld = yes ; then
4495 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4496 && test $in_tree_ld_is_elf = yes; then
4497 gcc_cv_ld_eh_gc_sections_bug=yes
4499 elif test x$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
4500 gcc_cv_ld_eh_gc_sections_bug=yes
4501 cat > conftest.s <<EOF
4504 .type _start, @function
4507 .size _start, .-_start
4508 .section .text.startup.foo,"ax",@progbits
4509 .type foo, @function
4513 .section .gcc_except_table.foo,"a",@progbits
4516 .section .eh_frame,"a",@progbits
4519 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4520 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4521 | grep "gc-sections option ignored" > /dev/null; then
4523 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4524 | grep gcc_except_table > /dev/null; then
4525 gcc_cv_ld_eh_gc_sections_bug=no
4528 rm -f conftest.s conftest.o conftest
4530 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4531 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4532 [Define if your linker has buggy garbage collection of
4533 sections support when .text.startup.foo like sections are used.])
4535 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4541 AC_CACHE_CHECK(linker --as-needed support,
4542 gcc_cv_ld_as_needed,
4543 [gcc_cv_ld_as_needed=no
4544 if test $in_tree_ld = yes ; then
4545 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4546 && test $in_tree_ld_is_elf = yes; then
4547 gcc_cv_ld_as_needed=yes
4549 elif test x$gcc_cv_ld != x; then
4550 # Check if linker supports --as-needed and --no-as-needed options
4551 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4552 gcc_cv_ld_as_needed=yes
4556 if test x"$gcc_cv_ld_as_needed" = xyes; then
4557 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4558 [Define if your linker supports --as-needed and --no-as-needed options.])
4561 case "$target:$tm_file" in
4562 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4565 emul_name="-melf64lppc"
4568 emul_name="-melf64ppc"
4571 emul_name="-melf64ppc_fbsd"
4574 AC_CACHE_CHECK(linker support for omitting dot symbols,
4575 gcc_cv_ld_no_dot_syms,
4576 [gcc_cv_ld_no_dot_syms=no
4577 if test x"$ld_is_gold" = xyes; then
4578 gcc_cv_ld_no_dot_syms=yes
4579 elif test $in_tree_ld = yes ; then
4580 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4581 gcc_cv_ld_no_dot_syms=yes
4583 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4584 cat > conftest1.s <<EOF
4588 cat > conftest2.s <<EOF
4589 .section ".opd","aw"
4594 .quad .LEfoo,.TOC.@tocbase,0
4600 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4601 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4602 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4603 gcc_cv_ld_no_dot_syms=yes
4605 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4608 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4609 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4610 [Define if your PowerPC64 linker only needs function descriptor syms.])
4613 AC_CACHE_CHECK(linker large toc support,
4614 gcc_cv_ld_large_toc,
4615 [gcc_cv_ld_large_toc=no
4616 if test x"$ld_is_gold" = xyes; then
4617 gcc_cv_ld_large_toc=yes
4618 elif test $in_tree_ld = yes ; then
4619 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4620 gcc_cv_ld_large_toc=yes
4622 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4623 cat > conftest.s <<EOF
4624 .section ".tbss","awT",@nobits
4630 addis 9,13,ie0@got@tprel@ha
4631 ld 9,ie0@got@tprel@l(9)
4633 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4634 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4635 gcc_cv_ld_large_toc=yes
4637 rm -f conftest conftest.o conftest.s
4640 if test x"$gcc_cv_ld_large_toc" = xyes; then
4641 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4642 [Define if your PowerPC64 linker supports a large TOC.])
4649 AC_CACHE_CHECK(linker large toc support,
4650 gcc_cv_ld_large_toc,
4651 [gcc_cv_ld_large_toc=no
4652 if test x$gcc_cv_as != x ; then
4653 cat > conftest.s <<EOF
4663 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
4664 gcc_cv_ld_large_toc=yes
4666 rm -f conftest conftest.o conftest.s
4669 if test x"$gcc_cv_ld_large_toc" = xyes; then
4670 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4671 [Define if your PowerPC64 linker supports a large TOC.])
4676 AC_CACHE_CHECK(linker --build-id support,
4678 [gcc_cv_ld_buildid=no
4679 if test $in_tree_ld = yes ; then
4680 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4681 "$gcc_cv_gld_minor_version" -ge 18 -o \
4682 "$gcc_cv_gld_major_version" -gt 2 \
4683 && test $in_tree_ld_is_elf = yes; then
4684 gcc_cv_ld_buildid=yes
4686 elif test x$gcc_cv_ld != x; then
4687 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4688 gcc_cv_ld_buildid=yes
4691 if test x"$gcc_cv_ld_buildid" = xyes; then
4692 AC_DEFINE(HAVE_LD_BUILDID, 1,
4693 [Define if your linker supports --build-id.])
4696 AC_ARG_ENABLE(linker-build-id,
4697 [AS_HELP_STRING([--enable-linker-build-id],
4698 [compiler will always pass --build-id to linker])],
4700 enable_linker_build_id=no)
4702 if test x"$enable_linker_build_id" = xyes; then
4703 if test x"$gcc_cv_ld_buildid" = xyes; then
4704 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4705 [Define if gcc should always pass --build-id to linker.])
4707 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4711 # In binutils 2.21, GNU ld gained support for new emulations fully
4712 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4713 AC_CACHE_CHECK(linker *_sol2 emulation support,
4714 gcc_cv_ld_sol2_emulation,
4715 [gcc_cv_ld_sol2_emulation=no
4716 if test $in_tree_ld = yes ; then
4717 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4718 "$gcc_cv_gld_minor_version" -ge 21 -o \
4719 "$gcc_cv_gld_major_version" -gt 2 \
4720 && test $in_tree_ld_is_elf = yes; then
4721 gcc_cv_ld_sol2_emulation=yes
4723 elif test x$gcc_cv_ld != x; then
4724 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4725 grep _sol2 > /dev/null; then
4726 gcc_cv_ld_sol2_emulation=yes
4729 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4730 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4731 [Define if your linker supports the *_sol2 emulations.])
4734 AC_CACHE_CHECK(linker --sysroot support,
4736 [gcc_cv_ld_sysroot=no
4737 if test $in_tree_ld = yes ; then
4738 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4739 gcc_cv_ld_sysroot=yes
4741 elif test x$gcc_cv_ld != x; then
4742 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4743 gcc_cv_ld_sysroot=yes
4746 if test x"$gcc_cv_ld_sysroot" = xyes; then
4747 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4748 [Define if your linker supports --sysroot.])
4751 if test x$with_sysroot = x && test x$host = x$target \
4752 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4753 && test "$prefix" != "NONE"; then
4754 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4755 [Define to PREFIX/include if cpp should also search that directory.])
4758 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4759 if test "x$with_headers" != x; then
4760 target_header_dir=$with_headers
4761 elif test "x$with_sysroot" = x; then
4762 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
4763 elif test "x$with_build_sysroot" != "x"; then
4764 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4765 elif test "x$with_sysroot" = xyes; then
4766 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4768 target_header_dir="${with_sysroot}${native_system_header_dir}"
4771 target_header_dir=${native_system_header_dir}
4774 # Test for stack protector support in target C library.
4775 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4776 gcc_cv_libc_provides_ssp,
4777 [gcc_cv_libc_provides_ssp=no
4779 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4780 [# glibc 2.4 and later provides __stack_chk_fail and
4781 # either __stack_chk_guard, or TLS access to stack guard canary.
4782 if test -f $target_header_dir/features.h \
4783 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4784 $target_header_dir/features.h > /dev/null; then
4785 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4786 $target_header_dir/features.h > /dev/null; then
4787 gcc_cv_libc_provides_ssp=yes
4788 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4789 $target_header_dir/features.h > /dev/null \
4790 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4791 $target_header_dir/features.h > /dev/null; then
4792 gcc_cv_libc_provides_ssp=yes
4793 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4794 $target_header_dir/features.h > /dev/null && \
4795 test -f $target_header_dir/bits/uClibc_config.h && \
4796 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4797 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4798 gcc_cv_libc_provides_ssp=yes
4800 # all versions of Bionic support stack protector
4801 elif test -f $target_header_dir/sys/cdefs.h \
4802 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
4803 $target_header_dir/sys/cdefs.h > /dev/null; then
4804 gcc_cv_libc_provides_ssp=yes
4808 # Avoid complicated tests (see
4809 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4810 # simply assert that glibc does provide this, which is true for all
4811 # realistically usable GNU/Hurd configurations.
4812 gcc_cv_libc_provides_ssp=yes;;
4813 *-*-darwin* | *-*-freebsd*)
4814 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4815 [echo "no __stack_chk_fail on this target"])
4817 *) gcc_cv_libc_provides_ssp=no ;;
4820 if test x$gcc_cv_libc_provides_ssp = xyes; then
4821 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4822 [Define if your target C library provides stack protector support])
4825 # Test for <sys/sdt.h> on the target.
4826 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4827 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4829 if test -f $target_header_dir/sys/sdt.h; then
4831 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4832 [Define if your target C library provides sys/sdt.h])
4834 AC_MSG_RESULT($have_sys_sdt_h)
4836 # Check if TFmode long double should be used by default or not.
4837 # Some glibc targets used DFmode long double, but with glibc 2.4
4838 # and later they can use TFmode.
4840 powerpc*-*-linux* | \
4844 AC_ARG_WITH(long-double-128,
4845 [AS_HELP_STRING([--with-long-double-128],
4846 [use 128-bit long double by default])],
4847 gcc_cv_target_ldbl128="$with_long_double_128",
4848 [[gcc_cv_target_ldbl128=no
4849 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4850 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4851 && gcc_cv_target_ldbl128=yes
4855 if test x$gcc_cv_target_ldbl128 = xyes; then
4856 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4857 [Define if TFmode long double should be the default])
4860 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4861 gcc_cv_target_dl_iterate_phdr=unknown
4863 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
4864 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
4865 # libdl there, both complicating its use and breaking compatibility
4866 # between Solaris 10 updates.
4867 *-*-solaris2.1[[1-9]]*)
4868 # <link.h> needs both a dl_iterate_phdr declaration and support for
4869 # compilation with largefile support.
4870 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4871 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4872 gcc_cv_target_dl_iterate_phdr=yes
4874 gcc_cv_target_dl_iterate_phdr=no
4878 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4879 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4880 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4881 [Define if your target C library provides the `dl_iterate_phdr' function.])
4883 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4885 # We no longer support different GC mechanisms. Emit an error if
4886 # the user configures with --with-gc.
4888 [AS_HELP_STRING([--with-gc={page,zone}],
4889 [this option is not supported anymore. It used to choose
4890 the garbage collection mechanism to use with the compiler])],
4891 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
4894 # Libraries to use on the host. This will normally be set by the top
4895 # level Makefile. Here we simply capture the value for our Makefile.
4896 if test -z "${HOST_LIBS+set}"; then
4901 # Use the system's zlib library.
4903 zlibinc="-I\$(srcdir)/../zlib"
4904 AC_ARG_WITH(system-zlib,
4905 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4912 dnl Very limited version of automake's enable-maintainer-mode
4914 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4915 dnl maintainer-mode is disabled by default
4916 AC_ARG_ENABLE(maintainer-mode,
4917 [AS_HELP_STRING([--enable-maintainer-mode],
4918 [enable make rules and dependencies not useful
4919 (and sometimes confusing) to the casual installer])],
4920 maintainer_mode=$enableval,
4923 AC_MSG_RESULT($maintainer_mode)
4925 if test "$maintainer_mode" = "yes"; then
4936 # Make empty files to contain the specs and options for each language.
4937 # Then add #include lines to for a compiler that has specs and/or options.
4943 # These (without "all_") are set in each config-lang.in.
4944 # `language' must be a single word so is spelled singularly.
4947 all_outputs='Makefile'
4948 # List of language makefile fragments.
4950 # Additional files for gengtype
4951 all_gtfiles="$target_gtfiles"
4953 # These are the languages that are set in --enable-languages,
4954 # and are available in the GCC tree.
4955 all_selected_languages=
4957 # Add the language fragments.
4958 # Languages are added via two mechanisms. Some information must be
4959 # recorded in makefile variables, these are defined in config-lang.in.
4960 # We accumulate them and plug them into the main Makefile.
4961 # The other mechanism is a set of hooks for each of the main targets
4962 # like `clean', `install', etc.
4964 language_hooks="Make-hooks"
4966 for lang in ${srcdir}/*/config-lang.in
4969 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4971 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4972 if test "x$lang_alias" = x
4974 echo "$lang doesn't set \$language." 1>&2
4977 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4978 subdirs="$subdirs $subdir"
4980 # $gcc_subdir is where the gcc integration files are to be found
4981 # for a language, both for internal compiler purposes (compiler
4982 # sources implementing front-end to GCC tree converters), and for
4983 # build infrastructure purposes (Make-lang.in, etc.)
4985 # This will be <subdir> (relative to $srcdir) if a line like
4986 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4987 # is found in <langdir>/config-lang.in, and will remain <langdir>
4990 # Except for the language alias (fetched above), the regular
4991 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4992 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4993 # only this and the language alias.
4995 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4996 if [ "$gcc_subdir" = "" ]; then
4997 gcc_subdir="$subdir"
5000 case ",$enable_languages," in
5002 all_selected_languages="$all_selected_languages $lang_alias"
5003 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5004 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5016 . ${srcdir}/$gcc_subdir/config-lang.in
5017 if test "x$language" = x
5019 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5024 case ",$enable_languages," in
5027 for i in $subdir_requires; do
5028 test -f "${srcdir}/$i/config-lang.in" && continue
5036 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5037 if test -f $srcdir/$gcc_subdir/lang.opt; then
5038 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5039 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5041 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5042 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5044 all_languages="$all_languages $language"
5045 all_compilers="$all_compilers $compilers"
5046 all_outputs="$all_outputs $outputs"
5047 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5048 case ",$enable_languages," in
5050 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5052 AC_SUBST(enable_lto)
5059 for language in $all_selected_languages
5061 check_languages="$check_languages check-$language"
5064 # We link each language in with a set of hooks, reached indirectly via
5065 # lang.${target}. Only do so for selected languages.
5069 target_list="all.cross start.encap rest.encap tags \
5070 install-common install-man install-info install-pdf install-html dvi \
5071 pdf html uninstall info man srcextra srcman srcinfo \
5072 mostlyclean clean distclean maintainer-clean install-plugin"
5074 for t in $target_list
5077 for lang in $all_selected_languages
5081 echo "lang.$t: $x" >> Make-hooks
5085 # Option include files
5088 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5089 option_includes="option-includes.mk"
5090 AC_SUBST_FILE(option_includes)
5098 echo "dir ." > .gdbinit
5099 echo "dir ${srcdir}" >> .gdbinit
5100 if test x$gdb_needs_out_file_path = xyes
5102 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5104 if test "x$subdirs" != x; then
5107 echo "dir ${srcdir}/$s" >> .gdbinit
5110 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5112 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5113 AC_SUBST(gcc_tooldir)
5116 # Find a directory in which to install a shared libgcc.
5118 AC_ARG_ENABLE(version-specific-runtime-libs,
5119 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5120 [specify that runtime libraries should be
5121 installed in a compiler-specific directory])])
5123 # Substitute configuration variables
5126 AC_SUBST(all_compilers)
5127 AC_SUBST(all_gtfiles)
5128 AC_SUBST(all_lang_makefrags)
5129 AC_SUBST(all_languages)
5130 AC_SUBST(all_selected_languages)
5131 AC_SUBST(build_exeext)
5132 AC_SUBST(build_install_headers_dir)
5133 AC_SUBST(build_xm_file_list)
5134 AC_SUBST(build_xm_include_list)
5135 AC_SUBST(build_xm_defines)
5136 AC_SUBST(build_file_translate)
5137 AC_SUBST(check_languages)
5138 AC_SUBST(cpp_install_dir)
5139 AC_SUBST(xmake_file)
5140 AC_SUBST(tmake_file)
5141 AC_SUBST(TM_ENDIAN_CONFIG)
5142 AC_SUBST(TM_MULTILIB_CONFIG)
5143 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5144 AC_SUBST(extra_gcc_objs)
5145 AC_SUBST(user_headers_inc_next_pre)
5146 AC_SUBST(user_headers_inc_next_post)
5147 AC_SUBST(extra_headers_list)
5148 AC_SUBST(extra_objs)
5149 AC_SUBST(extra_programs)
5150 AC_SUBST(float_h_file)
5151 AC_SUBST(gcc_config_arguments)
5152 AC_SUBST(gcc_gxx_include_dir)
5153 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5154 AC_SUBST(host_exeext)
5155 AC_SUBST(host_xm_file_list)
5156 AC_SUBST(host_xm_include_list)
5157 AC_SUBST(host_xm_defines)
5158 AC_SUBST(out_host_hook_obj)
5160 AC_SUBST(lang_opt_files)
5161 AC_SUBST(lang_specs_files)
5162 AC_SUBST(lang_tree_files)
5163 AC_SUBST(local_prefix)
5165 AC_SUBST(objc_boehm_gc)
5167 AC_SUBST(out_object_file)
5168 AC_SUBST(common_out_file)
5169 AC_SUBST(common_out_object_file)
5170 AC_SUBST(tm_file_list)
5171 AC_SUBST(tm_include_list)
5172 AC_SUBST(tm_defines)
5173 AC_SUBST(tm_p_file_list)
5174 AC_SUBST(tm_p_include_list)
5175 AC_SUBST(xm_file_list)
5176 AC_SUBST(xm_include_list)
5177 AC_SUBST(xm_defines)
5178 AC_SUBST(use_gcc_stdint)
5179 AC_SUBST(c_target_objs)
5180 AC_SUBST(cxx_target_objs)
5181 AC_SUBST(fortran_target_objs)
5182 AC_SUBST(target_cpu_default)
5184 AC_SUBST_FILE(language_hooks)
5187 if test x${build} = x${host} ; then
5188 if test x${host} = x${target} ; then
5189 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5191 echo "Links are now set up to build a cross-compiler" 1>&2
5192 echo " from ${host} to ${target}." 1>&2
5195 if test x${host} = x${target} ; then
5196 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5197 echo " for ${target}." 1>&2
5199 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5200 echo " from ${host} to ${target}." 1>&2
5204 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5205 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5207 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5208 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5210 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5211 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5212 if test "x${CLOOGLIBS}" != "x" ; then
5213 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5215 # Check whether isl_schedule_constraints_compute_schedule is available;
5216 # it's new in ISL-0.13.
5217 saved_CFLAGS="$CFLAGS"
5218 CFLAGS="$CFLAGS $ISLINC"
5220 LIBS="$LIBS $CLOOGLIBS $ISLLIBS $GMPLIBS"
5222 AC_MSG_CHECKING([Checking for isl_schedule_constraints_compute_schedule])
5223 AC_TRY_LINK([#include <isl/schedule.h>],
5224 [isl_schedule_constraints_compute_schedule (NULL);],
5225 [ac_has_isl_schedule_constraints_compute_schedule=yes],
5226 [ac_has_isl_schedule_constraints_compute_schedule=no])
5227 AC_MSG_RESULT($ac_has_isl_schedule_constraints_compute_schedule)
5230 CFLAGS="$saved_CFLAGS"
5232 if test x"$ac_has_isl_schedule_constraints_compute_schedule" = x"yes"; then
5233 AC_DEFINE(HAVE_ISL_SCHED_CONSTRAINTS_COMPUTE_SCHEDULE, 1,
5234 [Define if isl_schedule_constraints_compute_schedule exists.])
5239 # Check for plugin support
5240 AC_ARG_ENABLE(plugin,
5241 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5242 enable_plugin=$enableval,
5243 enable_plugin=yes; default_plugin=yes)
5249 if test x$build = x$host; then
5250 export_sym_check="nm${exeext} -g"
5251 elif test x$host = x$target; then
5252 export_sym_check="$gcc_cv_nm -g"
5258 if test x$build = x$host; then
5259 export_sym_check="objdump${exeext} -T"
5260 elif test x$host = x$target; then
5261 export_sym_check="$gcc_cv_objdump -T"
5268 if test x"$enable_plugin" = x"yes"; then
5270 AC_MSG_CHECKING([for exported symbols])
5271 if test "x$export_sym_check" != x; then
5272 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5273 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest$ac_exeext > /dev/null 2>&1
5274 if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
5275 : # No need to use a flag
5276 AC_MSG_RESULT([yes])
5278 AC_MSG_RESULT([yes])
5279 AC_MSG_CHECKING([for -rdynamic])
5280 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest$ac_exeext > /dev/null 2>&1
5281 if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
5283 pluginlibs="-rdynamic"
5288 AC_MSG_RESULT([$plugin_rdynamic])
5291 AC_MSG_RESULT([unable to check])
5296 AC_SEARCH_LIBS([dlopen], [dl])
5297 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5298 pluginlibs="$pluginlibs -ldl"
5302 # Check that we can build shared objects with -fPIC -shared
5303 saved_LDFLAGS="$LDFLAGS"
5304 saved_CFLAGS="$CFLAGS"
5307 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5308 CFLAGS="$CFLAGS -fPIC"
5309 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5312 CFLAGS="$CFLAGS -fPIC"
5313 LDFLAGS="$LDFLAGS -fPIC -shared"
5316 AC_MSG_CHECKING([for -fPIC -shared])
5318 [extern int X;],[return X == 0;],
5319 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5320 [AC_MSG_RESULT([no]); have_pic_shared=no])
5321 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5325 LDFLAGS="$saved_LDFLAGS"
5326 CFLAGS="$saved_CFLAGS"
5328 # If plugin support had been requested but not available, fail.
5329 if test x"$enable_plugin" = x"no" ; then
5330 if test x"$default_plugin" != x"yes"; then
5332 Building GCC with plugin support requires a host that supports
5333 -fPIC, -shared, -ldl and -rdynamic.])
5338 AC_SUBST(pluginlibs)
5339 AC_SUBST(enable_plugin)
5340 if test x"$enable_plugin" = x"yes"; then
5341 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5345 AC_ARG_ENABLE(libquadmath-support,
5346 [AS_HELP_STRING([--disable-libquadmath-support],
5347 [disable libquadmath support for Fortran])],
5348 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5349 ENABLE_LIBQUADMATH_SUPPORT=yes)
5350 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5351 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5352 [Define to 1 to enable libquadmath support])
5356 # Specify what hash style to use by default.
5357 AC_ARG_WITH([linker-hash-style],
5358 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5359 [specify the linker hash style])],
5360 [case x"$withval" in
5362 LINKER_HASH_STYLE=sysv
5365 LINKER_HASH_STYLE=gnu
5368 LINKER_HASH_STYLE=both
5371 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5374 [LINKER_HASH_STYLE=''])
5375 if test x"${LINKER_HASH_STYLE}" != x; then
5376 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5377 [The linker hash style])
5380 # Configure the subdirectories
5381 # AC_CONFIG_SUBDIRS($subdirs)
5383 # Create the Makefile
5384 # and configure language subdirectories
5385 AC_CONFIG_FILES($all_outputs)
5387 AC_CONFIG_COMMANDS([default],
5389 case ${CONFIG_HEADERS} in
5390 *auto-host.h:config.in*)
5393 # Make sure all the subdirs exist.
5394 for d in $subdirs doc build common c-family
5396 test -d $d || mkdir $d
5399 [subdirs='$subdirs'])