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 saved_CFLAGS="${CFLAGS}"
1520 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1521 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1522 ${realsrcdir}/configure \
1523 --enable-languages=${enable_languages-all} \
1524 --target=$target_alias --host=$build_alias --build=$build_alias
1525 CFLAGS="${saved_CFLAGS}"
1527 # We just finished tests for the build machine, so rename
1528 # the file auto-build.h in the gcc directory.
1529 mv auto-host.h ../auto-build.h
1532 build_auto=auto-build.h
1534 AC_SUBST(build_subdir)
1536 tm_file="${tm_file} defaults.h"
1537 tm_p_file="${tm_p_file} tm-preds.h"
1538 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1539 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1540 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1541 # put this back in temporarily.
1542 xm_file="auto-host.h ansidecl.h ${xm_file}"
1549 # Compile in configure arguments.
1550 if test -f configargs.h ; then
1551 # Being re-configured.
1552 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1553 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1555 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1558 # Double all backslashes and backslash all quotes to turn
1559 # gcc_config_arguments into a C string.
1560 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1561 $gcc_config_arguments
1563 gcc_config_arguments_str=`cat conftest.out`
1566 cat > configargs.h <<EOF
1567 /* Generated automatically. */
1568 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1569 static const char thread_model[] = "$thread_file";
1571 static const struct {
1572 const char *name, *value;
1573 } configure_default_options[] = $configure_default_options;
1578 gcc_BASEVER=`cat $srcdir/BASE-VER`
1579 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1580 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1581 if test -f $srcdir/REVISION ; then
1582 gcc_REVISION=`cat $srcdir/REVISION`
1586 cat > plugin-version.h <<EOF
1587 #include "configargs.h"
1589 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1590 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1591 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1592 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1594 static char basever[] = "$gcc_BASEVER";
1595 static char datestamp[] = "$gcc_DATESTAMP";
1596 static char devphase[] = "$gcc_DEVPHASE";
1597 static char revision[] = "$gcc_REVISION";
1599 /* FIXME plugins: We should make the version information more precise.
1600 One way to do is to add a checksum. */
1602 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1604 configuration_arguments};
1608 # Internationalization
1609 ZW_GNU_GETTEXT_SISTER_DIR
1611 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1612 # -liconv on the link line twice.
1613 case "$LIBINTL" in *$LIBICONV*)
1617 AC_ARG_ENABLE(secureplt,
1618 [AS_HELP_STRING([--enable-secureplt],
1619 [enable -msecure-plt by default for PowerPC])],
1622 AC_ARG_ENABLE(leading-mingw64-underscores,
1623 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1624 [enable leading underscores on 64 bit mingw targets]),
1626 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1627 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1628 [Define if we should use leading underscore on 64 bit mingw targets])])
1631 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1634 AC_ARG_ENABLE(frame-pointer,
1635 [AS_HELP_STRING([--enable-frame-pointer],
1636 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1639 linux* | darwin[[8912]]*)
1640 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1642 enable_frame_pointer=no
1645 enable_frame_pointer=yes
1650 # Windows32 Registry support for specifying GCC installation paths.
1651 AC_ARG_ENABLE(win32-registry,
1652 [AS_HELP_STRING([--disable-win32-registry],
1653 [disable lookup of installation paths in the
1654 Registry on Windows hosts])
1655 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1656 AS_HELP_STRING([--enable-win32-registry=KEY],
1657 [use KEY instead of GCC version as the last portion
1658 of the registry key])],,)
1661 win32 | pe | cygwin* | mingw32* | uwin*)
1662 if test "x$enable_win32_registry" != xno; then
1663 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1666 if test "x$enable_win32_registry" != xno; then
1667 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1668 [Define to 1 if installation paths should be looked up in the Windows
1669 Registry. Ignored on non-Windows hosts.])
1671 if test "x$enable_win32_registry" != xyes \
1672 && test "x$enable_win32_registry" != x; then
1673 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1674 [Define to be the last component of the Windows registry key under which
1675 to look for installation paths. The full key used will be
1676 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1677 The default is the GCC version number.])
1683 # Get an absolute path to the GCC top-level source directory
1684 holddir=`${PWDCMD-pwd}`
1686 topdir=`${PWDCMD-pwd}`
1689 # Conditionalize the makefile for this host machine.
1691 for f in ${host_xmake_file}
1693 if test -f ${srcdir}/config/$f
1695 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1699 # Conditionalize the makefile for this target machine.
1701 for f in ${tmake_file}
1703 if test -f ${srcdir}/config/$f
1705 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1708 tmake_file="${tmake_file_}"
1710 out_object_file=`basename $out_file .c`.o
1711 common_out_object_file=`basename $common_out_file .c`.o
1713 tm_file_list="options.h"
1714 tm_include_list="options.h insn-constants.h"
1715 for f in $tm_file; do
1718 f=`echo $f | sed 's/^..//'`
1719 tm_file_list="${tm_file_list} $f"
1720 tm_include_list="${tm_include_list} $f"
1723 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1724 tm_include_list="${tm_include_list} $f"
1727 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1728 tm_include_list="${tm_include_list} config/$f"
1735 for f in $tm_p_file; do
1738 tm_p_file_list="${tm_p_file_list} $f"
1739 tm_p_include_list="${tm_p_include_list} $f"
1742 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1743 tm_p_include_list="${tm_p_include_list} config/$f"
1749 for f in $xm_file; do
1752 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1753 xm_include_list="${xm_include_list} $f"
1756 xm_file_list="${xm_file_list} $f"
1757 xm_include_list="${xm_include_list} $f"
1760 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1761 xm_include_list="${xm_include_list} config/$f"
1767 host_xm_include_list=
1768 for f in $host_xm_file; do
1771 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1772 host_xm_include_list="${host_xm_include_list} $f"
1775 host_xm_file_list="${host_xm_file_list} $f"
1776 host_xm_include_list="${host_xm_include_list} $f"
1779 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1780 host_xm_include_list="${host_xm_include_list} config/$f"
1786 for f in $build_xm_file; do
1789 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1790 build_xm_include_list="${build_xm_include_list} $f"
1792 auto-build.h | auto-host.h )
1793 build_xm_file_list="${build_xm_file_list} $f"
1794 build_xm_include_list="${build_xm_include_list} $f"
1797 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1798 build_xm_include_list="${build_xm_include_list} config/$f"
1803 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1804 # cross-compiler which does not use the native headers and libraries.
1805 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1806 CROSS= AC_SUBST(CROSS)
1807 ALL=all.internal AC_SUBST(ALL)
1808 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1810 if test "x$with_build_sysroot" != x; then
1811 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1813 # This value is used, even on a native system, because
1814 # CROSS_SYSTEM_HEADER_DIR is just
1815 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1816 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1819 if test x$host != x$target
1821 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1823 SYSTEM_HEADER_DIR=$build_system_header_dir
1824 case "$host","$target" in
1825 # Darwin crosses can use the host system's libraries and headers,
1826 # because of the fat library support. Of course, it must be the
1827 # same version of Darwin on both sides. Allow the user to
1828 # just say --target=foo-darwin without a version number to mean
1829 # "the version on this system".
1830 *-*-darwin*,*-*-darwin*)
1831 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1832 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1833 if test $hostos = $targetos -o $targetos = darwin ; then
1835 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1840 i?86-*-*,x86_64-*-* \
1841 | powerpc*-*-*,powerpc64*-*-*)
1842 CROSS="$CROSS -DNATIVE_CROSS" ;;
1847 if test "x$with_headers" = x; then
1854 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1855 SYSTEM_HEADER_DIR=$build_system_header_dir
1858 # If this is a cross-compiler that does not
1859 # have its own set of headers then define
1862 # If this is using newlib, without having the headers available now,
1863 # then define inhibit_libc in LIBGCC2_CFLAGS.
1864 # This prevents libgcc2 from containing any code which requires libc
1866 : ${inhibit_libc=false}
1867 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1868 test x$with_newlib = xyes ; } &&
1869 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1872 AC_SUBST(inhibit_libc)
1874 # When building gcc with a cross-compiler, we need to adjust things so
1875 # that the generator programs are still built with the native compiler.
1876 # Also, we cannot run fixincludes.
1878 # These are the normal (build=host) settings:
1879 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1880 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
1881 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1882 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
1883 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1884 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1886 # And these apply if build != host, or we are generating coverage data
1887 if test x$build != x$host || test "x$coverage_flags" != x
1889 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1890 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1893 # Expand extra_headers to include complete path.
1894 # This substitutes for lots of t-* files.
1896 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1897 for file in ${extra_headers} ; do
1898 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1901 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1902 if test x"$use_gcc_tgmath" = xyes
1903 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1906 # Define collect2 in Makefile.
1907 case $host_can_use_collect2 in
1909 *) collect2='collect2$(exeext)' ;;
1911 AC_SUBST([collect2])
1913 # Add a definition of USE_COLLECT2 if system wants one.
1914 case $use_collect2 in
1915 no) use_collect2= ;;
1918 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1919 xm_defines="${xm_defines} USE_COLLECT2"
1920 case $host_can_use_collect2 in
1922 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1928 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1929 [Define to the name of the LTO plugin DSO that must be
1930 passed to the linker's -plugin=LIB option.])
1932 # ---------------------------
1933 # Assembler & linker features
1934 # ---------------------------
1936 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1937 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1938 # However when ld-new is first executed from the build tree, libtool will
1939 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1940 # to the build tree. While doing this we need to use the previous-stage
1941 # linker, or we have an infinite loop. The presence of a shell script as
1942 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1943 # the gcc/collect-ld script. So we need to know how libtool works, or
1944 # exec-tool will fail.
1946 m4_defun([_LT_CONFIG_COMMANDS], [])
1949 AC_SUBST(enable_fast_install)
1951 # Identify the assembler which will work hand-in-glove with the newly
1952 # built GCC, so that we can examine its features. This is the assembler
1953 # which will be driven by the driver program.
1955 # If build != host, and we aren't building gas in-tree, we identify a
1956 # build->target assembler and hope that it will have the same features
1957 # as the host->target assembler we'll be using.
1958 gcc_cv_gas_major_version=
1959 gcc_cv_gas_minor_version=
1960 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1962 m4_pattern_allow([AS_FOR_TARGET])dnl
1963 AS_VAR_SET_IF(gcc_cv_as,, [
1964 if test -x "$DEFAULT_ASSEMBLER"; then
1965 gcc_cv_as="$DEFAULT_ASSEMBLER"
1966 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1967 && test -f ../gas/Makefile \
1968 && test x$build = x$host; then
1969 gcc_cv_as=../gas/as-new$build_exeext
1970 elif test -x as$build_exeext; then
1971 # Build using assembler in the current directory.
1972 gcc_cv_as=./as$build_exeext
1973 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1974 gcc_cv_as="$AS_FOR_TARGET"
1976 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1979 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1980 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1981 case "$ORIGINAL_AS_FOR_TARGET" in
1982 ./as | ./as$build_exeext) ;;
1983 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1986 AC_MSG_CHECKING(what assembler to use)
1987 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1988 # Single tree build which includes gas. We want to prefer it
1989 # over whatever linker top-level may have detected, since
1990 # we'll use what we're building after installation anyway.
1991 AC_MSG_RESULT(newly built gas)
1993 _gcc_COMPUTE_GAS_VERSION
1994 in_tree_gas_is_elf=no
1995 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1996 || (grep 'obj_format = multi' ../gas/Makefile \
1997 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1999 in_tree_gas_is_elf=yes
2002 AC_MSG_RESULT($gcc_cv_as)
2006 # Identify the linker which will work hand-in-glove with the newly
2007 # built GCC, so that we can examine its features. This is the linker
2008 # which will be driven by the driver program.
2010 # If build != host, and we aren't building gas in-tree, we identify a
2011 # build->target linker and hope that it will have the same features
2012 # as the host->target linker we'll be using.
2013 gcc_cv_gld_major_version=
2014 gcc_cv_gld_minor_version=
2015 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2016 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2018 AS_VAR_SET_IF(gcc_cv_ld,, [
2019 if test -x "$DEFAULT_LINKER"; then
2020 gcc_cv_ld="$DEFAULT_LINKER"
2021 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2022 && test -f ../ld/Makefile \
2023 && test x$build = x$host; then
2024 gcc_cv_ld=../ld/ld-new$build_exeext
2025 elif test -x collect-ld$build_exeext; then
2026 # Build using linker in the current directory.
2027 gcc_cv_ld=./collect-ld$build_exeext
2028 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2029 gcc_cv_ld="$LD_FOR_TARGET"
2031 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2034 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2035 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2036 # if the PLUGIN_LD is set ld-new, just have it as ld
2037 # as that is the installed named.
2038 if test x$PLUGIN_LD_SUFFIX = xld-new \
2039 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2042 AC_ARG_WITH(plugin-ld,
2043 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2044 [if test x"$withval" != x; then
2045 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2046 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2048 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2049 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2051 # Check to see if we are using gold instead of ld
2052 AC_MSG_CHECKING(whether we are using gold)
2054 if test x$gcc_cv_ld != x; then
2055 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2056 | grep "GNU gold" > /dev/null; then
2060 AC_MSG_RESULT($ld_is_gold)
2062 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2063 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2064 case "$ORIGINAL_LD_FOR_TARGET" in
2065 ./collect-ld | ./collect-ld$build_exeext) ;;
2066 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2069 AC_MSG_CHECKING(what linker to use)
2070 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2071 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2072 # Single tree build which includes ld. We want to prefer it
2073 # over whatever linker top-level may have detected, since
2074 # we'll use what we're building after installation anyway.
2075 AC_MSG_RESULT(newly built ld)
2077 in_tree_ld_is_elf=no
2078 if (grep 'EMUL = .*elf' ../ld/Makefile \
2079 || grep 'EMUL = .*linux' ../ld/Makefile \
2080 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2081 in_tree_ld_is_elf=yes
2082 elif test "$ld_is_gold" = yes; then
2083 in_tree_ld_is_elf=yes
2085 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
2088 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2089 if test x$gcc_cv_gld_version != x; then
2093 case $gcc_cv_gld_version in
2096 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2099 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2100 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2103 AC_MSG_RESULT($gcc_cv_ld)
2107 # Figure out what nm we will be using.
2108 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2109 AS_VAR_SET_IF(gcc_cv_nm,, [
2110 if test -f $gcc_cv_binutils_srcdir/configure.in \
2111 && test -f ../binutils/Makefile \
2112 && test x$build = x$host; then
2113 gcc_cv_nm=../binutils/nm-new$build_exeext
2114 elif test -x nm$build_exeext; then
2115 gcc_cv_nm=./nm$build_exeext
2116 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2117 gcc_cv_nm="$NM_FOR_TARGET"
2119 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2122 AC_MSG_CHECKING(what nm to use)
2123 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2124 # Single tree build which includes binutils.
2125 AC_MSG_RESULT(newly built nm)
2128 AC_MSG_RESULT($gcc_cv_nm)
2132 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2133 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2134 case "$ORIGINAL_NM_FOR_TARGET" in
2135 ./nm | ./nm$build_exeext) ;;
2136 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2140 # Figure out what objdump we will be using.
2141 AS_VAR_SET_IF(gcc_cv_objdump,, [
2142 if test -f $gcc_cv_binutils_srcdir/configure.in \
2143 && test -f ../binutils/Makefile \
2144 && test x$build = x$host; then
2145 # Single tree build which includes binutils.
2146 gcc_cv_objdump=../binutils/objdump$build_exeext
2147 elif test -x objdump$build_exeext; then
2148 gcc_cv_objdump=./objdump$build_exeext
2149 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2150 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2152 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2155 AC_MSG_CHECKING(what objdump to use)
2156 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2157 # Single tree build which includes binutils.
2158 AC_MSG_RESULT(newly built objdump)
2159 elif test x$gcc_cv_objdump = x; then
2160 AC_MSG_RESULT(not found)
2162 AC_MSG_RESULT($gcc_cv_objdump)
2165 # Figure out what readelf we will be using.
2166 AS_VAR_SET_IF(gcc_cv_readelf,, [
2167 if test -f $gcc_cv_binutils_srcdir/configure.in \
2168 && test -f ../binutils/Makefile \
2169 && test x$build = x$host; then
2170 # Single tree build which includes binutils.
2171 gcc_cv_readelf=../binutils/readelf$build_exeext
2172 elif test -x readelf$build_exeext; then
2173 gcc_cv_readelf=./readelf$build_exeext
2175 AC_PATH_PROG(gcc_cv_readelf, readelf)
2178 AC_MSG_CHECKING(what readelf to use)
2179 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2180 # Single tree build which includes binutils.
2181 AC_MSG_RESULT(newly built readelf)
2182 elif test x$gcc_cv_readelf = x; then
2183 AC_MSG_RESULT(not found)
2185 AC_MSG_RESULT($gcc_cv_readelf)
2188 # Figure out what assembler alignment features are present.
2189 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2193 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2194 [Define if your assembler supports .balign and .p2align.])])
2196 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2199 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2200 [Define if your assembler supports specifying the maximum number
2201 of bytes to skip when using the GAS .p2align command.])])
2203 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2206 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2207 [Define if your assembler supports .literal16.])])
2209 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2211 [conftest_label1: .word 0
2213 conftest_label2: .word 0
2215 [if test x$gcc_cv_nm != x; then
2216 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2217 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2218 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2220 else gcc_cv_as_subsection_m1=yes
2222 rm -f conftest.nm1 conftest.nm2
2224 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2225 [Define if your assembler supports .subsection and .subsection -1 starts
2226 emitting at the beginning of your section.])])
2228 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2231 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2233 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2235 [ .weakref foobar, barfnot],,
2236 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2238 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2241 .NSUBSPA $CODE$,COMDAT],,
2242 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2244 # .hidden needs to be supported in both the assembler and the linker,
2245 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2246 # This is irritatingly difficult to feature test for; we have to check the
2247 # date string after the version number. If we've got an in-tree
2248 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2250 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2251 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2255 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2256 # STV_HIDDEN, so disable .hidden support if so.
2258 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2259 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2260 cat > conftest.s <<EOF
2267 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2268 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2269 grep '\.hidden default' > /dev/null; then
2272 gcc_cv_as_hidden=yes
2275 # Assume bug is present if objdump is missing.
2280 gcc_cv_as_hidden=yes
2285 # Darwin as has some visibility support, though with a different syntax.
2286 gcc_cv_as_hidden=yes
2290 # gnu_indirect_function type is an extension proposed at
2291 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2292 # selection of function implementation
2293 AC_ARG_ENABLE(gnu-indirect-function,
2294 [AS_HELP_STRING([--enable-gnu-indirect-function],
2295 [enable the use of the @gnu_indirect_function to glibc systems])],
2296 [case $enable_gnu_indirect_function in
2298 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2299 Valid choices are 'yes' and 'no'.]) ;;
2301 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2302 if test x$enable_gnu_indirect_function = xyes; then
2303 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2304 [Define if your system supports gnu indirect functions.])
2308 if test $in_tree_ld != yes ; then
2309 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2310 if echo "$ld_ver" | grep GNU > /dev/null; then
2311 if test x"$ld_is_gold" = xyes; then
2312 # GNU gold --version looks like this:
2314 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2316 # We extract the binutils version which is more familiar and specific
2317 # than the gold version.
2318 ld_vers=`echo $ld_ver | sed -n \
2319 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2321 # GNU ld --version looks like this:
2323 # GNU ld (GNU Binutils) 2.21.51.20110225
2324 ld_vers=`echo $ld_ver | sed -n \
2325 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2327 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2328 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2329 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2330 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2334 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2337 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2338 # /usr/ccs/bin/ld has been configured.
2339 ld_ver=`$gcc_cv_ld -V 2>&1`
2340 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2341 ld_vers=`echo $ld_ver | sed -n \
2342 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2343 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2344 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2352 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2353 [[if test $in_tree_ld = yes ; then
2355 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2356 && test $in_tree_ld_is_elf = yes; then
2357 gcc_cv_ld_hidden=yes
2360 gcc_cv_ld_hidden=yes
2361 if test x"$ld_is_gold" = xyes; then
2363 elif echo "$ld_ver" | grep GNU > /dev/null; then
2365 mmix-knuth-mmixware)
2366 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2370 if test 0"$ld_date" -lt 20020404; then
2371 if test -n "$ld_date"; then
2372 # If there was date string, but was earlier than 2002-04-04, fail
2374 elif test -z "$ld_vers"; then
2375 # If there was no date string nor ld version number, something is wrong
2378 test -z "$ld_vers_patch" && ld_vers_patch=0
2379 if test "$ld_vers_major" -lt 2; then
2381 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2382 gcc_cv_ld_hidden="no"
2383 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2391 # Darwin ld has some visibility support.
2392 gcc_cv_ld_hidden=yes
2394 hppa64*-*-hpux* | ia64*-*-hpux*)
2395 gcc_cv_ld_hidden=yes
2397 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2398 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2399 # .symbolic was only added in Solaris 9 12/02.
2400 gcc_cv_ld_hidden=yes
2408 libgcc_visibility=no
2409 AC_SUBST(libgcc_visibility)
2410 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2411 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2412 libgcc_visibility=yes
2413 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2414 [Define if your assembler and linker support .hidden.])
2417 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2418 gcc_cv_ld_ro_rw_mix=unknown
2419 if test $in_tree_ld = yes ; then
2420 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2421 && test $in_tree_ld_is_elf = yes; then
2422 gcc_cv_ld_ro_rw_mix=read-write
2424 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2425 echo '.section myfoosect, "a"' > conftest1.s
2426 echo '.section myfoosect, "aw"' > conftest2.s
2427 echo '.byte 1' >> conftest2.s
2428 echo '.section myfoosect, "a"' > conftest3.s
2429 echo '.byte 0' >> conftest3.s
2430 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2431 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2432 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2433 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2434 conftest2.o conftest3.o > /dev/null 2>&1; then
2435 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2436 | sed -e '/myfoosect/!d' -e N`
2437 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2438 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2439 gcc_cv_ld_ro_rw_mix=read-only
2441 gcc_cv_ld_ro_rw_mix=read-write
2446 rm -f conftest.* conftest[123].*
2449 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2450 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2451 [Define if your linker links a mix of read-only
2452 and read-write sections into a read-write section.])
2454 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2456 gcc_AC_INITFINI_ARRAY
2458 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2459 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2467 [[# GAS versions before 2.11 do not support uleb128,
2468 # despite appearing to.
2469 # ??? There exists an elf-specific test that will crash
2470 # the assembler. Perhaps it's better to figure out whether
2471 # arbitrary sections are supported and try the test.
2472 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2473 if echo "$as_ver" | grep GNU > /dev/null; then
2474 as_vers=`echo $as_ver | sed -n \
2475 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2476 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2477 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2478 if test $as_major -eq 2 && test $as_minor -lt 11
2480 else gcc_cv_as_leb128=yes
2483 [AC_DEFINE(HAVE_AS_LEB128, 1,
2484 [Define if your assembler supports .sleb128 and .uleb128.])])
2486 # Check if we have assembler support for unwind directives.
2487 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2494 .cfi_escape 1, 2, 3, 4, 5
2498 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2499 # read-only and read-write sections, we need to make sure that the
2500 # assembler used emits read-write .eh_frame sections.
2501 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2502 if test "x$gcc_cv_objdump" != x; then
2503 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2504 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2505 gcc_cv_as_cfi_directive=no
2508 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2509 # On Solaris/x86, make sure that GCC and gas agree on using
2510 # read-only .eh_frame sections for 64-bit.
2511 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2512 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2513 sed -e /.eh_frame/!d -e N | \
2514 grep READONLY > /dev/null; then
2515 gcc_cv_as_cfi_directive=yes
2517 gcc_cv_as_cfi_directive=no
2521 gcc_cv_as_cfi_directive=yes
2526 # no objdump, err on the side of caution
2527 gcc_cv_as_cfi_directive=no
2530 gcc_cv_as_cfi_directive=yes
2534 gcc_cv_as_cfi_directive=yes
2537 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2538 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2542 .cfi_adjust_cfa_offset 64
2544 .cfi_adjust_cfa_offset 128
2547 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2548 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2549 gcc_cv_as_cfi_advance_working=yes
2553 # no objdump, err on the side of caution
2554 gcc_cv_as_cfi_advance_working=no
2556 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2557 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2558 [`if test $gcc_cv_as_cfi_directive = yes \
2559 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2560 [Define 0/1 if your assembler supports CFI directives.])
2562 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2563 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2564 gcc_cv_as_cfi_personality_directive, ,,
2567 .cfi_personality 0, symbol
2569 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2570 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2571 then echo 1; else echo 0; fi`],
2572 [Define 0/1 if your assembler supports .cfi_personality.])
2574 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2575 gcc_cv_as_cfi_sections_directive, ,,
2577 .cfi_sections .debug_frame, .eh_frame
2581 win32 | pe | cygwin* | mingw32* | uwin*)
2582 # Need to check that we generated the correct relocation for the
2583 # .debug_frame section. This was fixed for binutils 2.21.
2584 gcc_cv_as_cfi_sections_directive=no
2585 if test "x$gcc_cv_objdump" != x; then
2586 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2587 grep secrel > /dev/null; then
2588 gcc_cv_as_cfi_sections_directive=yes
2593 gcc_cv_as_cfi_sections_directive=yes
2596 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2597 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2598 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2599 then echo 1; else echo 0; fi`],
2600 [Define 0/1 if your assembler supports .cfi_sections.])
2602 # GAS versions up to and including 2.11.0 may mis-optimize
2604 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2612 .section .eh_frame,"aw",@progbits
2614 .4byte .LECIE1-.LSCIE1
2628 .4byte .LEFDE1-.LASFDE1
2630 .4byte .LASFDE1-__FRAME_BEGIN__
2638 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2639 cat > conftest.lit <<EOF
2640 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2641 0010 01000000 12000000 18000000 00000000 ................
2642 0020 08000000 04080000 0044 .........D @&t@
2644 cat > conftest.big <<EOF
2645 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2646 0010 00000001 00000012 00000018 00000000 ................
2647 0020 00000008 04000000 0844 .........D @&t@
2649 # If the assembler didn't choke, and we can objdump,
2650 # and we got the correct data, then succeed.
2651 # The text in the here-document typically retains its unix-style line
2652 # endings, while the output of objdump will use host line endings.
2653 # Therefore, use diff -b for the comparisons.
2654 if test x$gcc_cv_objdump != x \
2655 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2656 | tail -3 > conftest.got \
2657 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2658 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2660 gcc_cv_as_eh_frame=yes
2661 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2662 gcc_cv_as_eh_frame=buggy
2664 # Uh oh, what do we do now?
2665 gcc_cv_as_eh_frame=no
2668 if test $gcc_cv_as_eh_frame = buggy; then
2669 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2670 [Define if your assembler mis-optimizes .eh_frame data.])
2673 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2674 [elf,2,12,0], [--fatal-warnings],
2675 [.section .rodata.str, "aMS", @progbits, 1])
2676 if test $gcc_cv_as_shf_merge = no; then
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])
2681 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2682 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2683 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2685 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2686 gcc_cv_as_comdat_group,
2687 [elf,2,16,0], [--fatal-warnings],
2688 [.section .text,"axG",@progbits,.foo,comdat])
2689 if test $gcc_cv_as_comdat_group = yes; then
2690 gcc_cv_as_comdat_group_percent=no
2691 gcc_cv_as_comdat_group_group=no
2693 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2694 gcc_cv_as_comdat_group_percent,
2695 [elf,2,16,0], [--fatal-warnings],
2696 [.section .text,"axG",%progbits,.foo,comdat])
2697 if test $gcc_cv_as_comdat_group_percent = yes; then
2698 gcc_cv_as_comdat_group_group=no
2700 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2701 gcc_cv_as_comdat_group_group=no
2704 # Sun as uses a completely different syntax.
2709 .group foo,".text%foo",#comdat
2710 .section ".text%foo", #alloc,#execinstr,#progbits
2715 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2717 .group foo,.text%foo,#comdat
2718 .section .text%foo, "ax", @progbits
2724 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2725 gcc_cv_as_comdat_group_group,
2731 if test x"$ld_is_gold" = xyes; then
2733 elif test $in_tree_ld = yes ; then
2735 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2736 && test $in_tree_ld_is_elf = yes; then
2739 elif echo "$ld_ver" | grep GNU > /dev/null; then
2741 if test 0"$ld_date" -lt 20050308; then
2742 if test -n "$ld_date"; then
2743 # If there was date string, but was earlier than 2005-03-08, fail
2745 elif test "$ld_vers_major" -lt 2; then
2747 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2754 *-*-solaris2.1[1-9]*)
2756 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2757 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2760 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2761 # least ld version 1.2267.
2762 if test "$ld_vers_major" -gt 1; then
2764 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2766 elif test "$ld_vers_minor" -ge 2267; then
2771 # Assume linkers other than GNU ld don't support COMDAT group.
2777 # Allow overriding the automatic COMDAT group tests above.
2778 AC_ARG_ENABLE(comdat,
2779 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2780 [comdat_group="$enable_comdat"])
2781 if test $comdat_group = no; then
2782 gcc_cv_as_comdat_group=no
2783 gcc_cv_as_comdat_group_percent=no
2784 gcc_cv_as_comdat_group_group=no
2786 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2787 [`if test $gcc_cv_as_comdat_group = yes \
2788 || test $gcc_cv_as_comdat_group_percent = yes \
2789 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2790 [Define 0/1 if your assembler and linker support COMDAT groups.])
2792 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2793 gcc_cv_as_discriminator,
2797 .loc 1 1 0 discriminator 1],,
2798 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2799 [Define if your assembler supports the .loc discriminator sub-directive.])])
2801 # Thread-local storage - the check is heavily parameterized.
2810 .section ".tdata","awT",@progbits
2813 ldq $27,__tls_get_addr($29) !literal!1
2814 lda $16,foo($29) !tlsgd!1
2815 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2816 ldq $27,__tls_get_addr($29) !literal!2
2817 lda $16,foo($29) !tlsldm!2
2818 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2819 ldq $1,foo($29) !gotdtprel
2820 ldah $2,foo($29) !dtprelhi
2821 lda $3,foo($2) !dtprello
2822 lda $4,foo($29) !dtprel
2823 ldq $1,foo($29) !gottprel
2824 ldah $2,foo($29) !tprelhi
2825 lda $3,foo($2) !tprello
2826 lda $4,foo($29) !tprel'
2829 tls_as_opt=--fatal-warnings
2831 cris-*-*|crisv32-*-*)
2833 .section ".tdata","awT",@progbits
2840 tls_as_opt=--fatal-warnings
2844 .section ".tdata","awT",@progbits
2856 .section ".tdata","awT",@progbits
2860 addil LT%foo-$tls_gdidx$,gp
2861 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2864 addil LT%foo-$tls_ldidx$,gp
2866 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2867 addil LR%foo-$tls_dtpoff$,%ret0
2868 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2870 addil LT%foo-$tls_ieoff$,gp
2871 ldw RT%foo-$tls_ieoff$(%r1),%t2
2874 addil LR%foo-$tls_leoff$,%t1
2875 ldo RR%foo-$tls_leoff$(%r1),%t2'
2878 tls_as_opt=--fatal-warnings
2882 .section ".tdata","awT",%progbits
2893 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2895 i[34567]86-*-solaris2.*)
2897 tga_func=___tls_get_addr
2899 x86_64-*-solaris2.1[0-9]*)
2901 tga_func=__tls_get_addr
2907 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2909 .section .tdata,"awt",@progbits'
2913 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2914 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2918 .section ".tdata","awT",@progbits'
2921 tls_as_opt="--fatal-warnings"
2923 conftest_s="$conftest_s
2927 leal foo@tlsgd(,%ebx,1), %eax
2928 leal foo@tlsldm(%ebx), %eax
2929 leal foo@dtpoff(%eax), %edx
2930 movl foo@gottpoff(%ebx), %eax
2931 subl foo@gottpoff(%ebx), %eax
2932 addl foo@gotntpoff(%ebx), %eax
2933 movl foo@indntpoff, %eax
2934 movl \$foo@tpoff, %eax
2935 subl \$foo@tpoff, %eax
2936 leal foo@ntpoff(%ecx), %eax"
2940 .section ".tdata","awT",@progbits
2944 leaq foo@TLSGD(%rip), %rdi
2945 leaq foo@TLSLD(%rip), %rdi
2946 leaq foo@DTPOFF(%rax), %rdx
2947 movq foo@GOTTPOFF(%rip), %rax
2948 movq $foo@TPOFF, %rax'
2951 tls_as_opt=--fatal-warnings
2955 .section ".tdata","awT",@progbits
2958 addl r16 = @ltoff(@dtpmod(foo#)), gp
2959 addl r17 = @ltoff(@dtprel(foo#)), gp
2960 addl r18 = @ltoff(@tprel(foo#)), gp
2961 addl r19 = @dtprel(foo#), gp
2962 adds r21 = @dtprel(foo#), r13
2963 movl r23 = @dtprel(foo#)
2964 addl r20 = @tprel(foo#), gp
2965 adds r22 = @tprel(foo#), r13
2966 movl r24 = @tprel(foo#)'
2969 tls_as_opt=--fatal-warnings
2973 .section .tdata,"awT",@progbits
2977 addik r5,r20,x@TLSGD
2978 addik r5,r20,x@TLSLDM'
2981 tls_as_opt='--fatal-warnings'
2985 .section .tdata,"awT",@progbits
2989 addiu $4, $28, %tlsgd(x)
2990 addiu $4, $28, %tlsldm(x)
2991 lui $4, %dtprel_hi(x)
2992 addiu $4, $4, %dtprel_lo(x)
2993 lw $4, %gottprel(x)($28)
2994 lui $4, %tprel_hi(x)
2995 addiu $4, $4, %tprel_lo(x)'
2998 tls_as_opt='-32 --fatal-warnings'
3002 .section .tdata,"awT",@progbits
3007 move.l x@TLSGD(%a5),%a0
3008 move.l x@TLSLDM(%a5),%a0
3009 move.l x@TLSLDO(%a5),%a0
3010 move.l x@TLSIE(%a5),%a0
3011 move.l x@TLSLE(%a5),%a0'
3014 tls_as_opt='--fatal-warnings'
3018 .section ".tdata","awT",%progbits
3022 add x0, x0, #:tlsgd_lo12:x
3027 tls_as_opt='--fatal-warnings'
3031 .extern __get_tpointer
3049 .section ".tdata","awT",@progbits
3057 addi 3,2,ld0@got@tlsgd
3063 addi 3,2,x1@got@tlsld
3069 addis 9,3,x2@dtprel@ha
3070 addi 9,9,x2@dtprel@l
3073 ld 9,x3@got@dtprel(2)
3079 tls_as_opt="-a64 --fatal-warnings"
3083 .section ".tdata","awT",@progbits
3091 addi 3,31,ld0@got@tlsgd
3093 addi 3,31,x1@got@tlsld
3096 addis 9,3,x2@dtprel@ha
3097 addi 9,9,x2@dtprel@l
3098 lwz 9,x3@got@tprel(31)
3101 addis 9,2,x2@tprel@ha
3102 addi 9,9,x2@tprel@l'
3105 tls_as_opt="-a32 --fatal-warnings"
3109 .section ".tdata","awT",@progbits
3118 l %r1,foo@GOTNTPOFF(%r12)
3119 l %r1,0(%r1):tls_load:foo
3120 bas %r14,0(%r1,%r13):tls_gdcall:foo
3121 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3124 tls_as_opt="-m31 --fatal-warnings"
3128 .section ".tdata","awT",@progbits
3136 lg %r1,foo@GOTNTPOFF(%r12)
3137 larl %r1,foo@INDNTPOFF
3138 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3139 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3142 tls_as_opt="-m64 -Aesame --fatal-warnings"
3144 sh-*-* | sh[34]-*-*)
3146 .section ".tdata","awT",@progbits
3156 tls_as_opt=--fatal-warnings
3160 sparc*-sun-solaris2.*)
3162 tga_func=__tls_get_addr
3168 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3170 .section ".tdata",#alloc,#write,#tls'
3175 .section ".tdata","awT",@progbits'
3178 tls_as_opt="-32 --fatal-warnings"
3180 conftest_s="$conftest_s
3183 sethi %tgd_hi22(foo), %o0
3184 add %o0, %tgd_lo10(foo), %o1
3185 add %l7, %o1, %o0, %tgd_add(foo)
3186 call __tls_get_addr, %tgd_call(foo)
3187 sethi %tldm_hi22(foo), %l1
3188 add %l1, %tldm_lo10(foo), %l2
3189 add %l7, %l2, %o0, %tldm_add(foo)
3190 call __tls_get_addr, %tldm_call(foo)
3191 sethi %tldo_hix22(foo), %l3
3192 xor %l3, %tldo_lox10(foo), %l4
3193 add %o0, %l4, %l5, %tldo_add(foo)
3194 sethi %tie_hi22(foo), %o3
3195 add %o3, %tie_lo10(foo), %o3
3196 ld [%l7 + %o3], %o2, %tie_ld(foo)
3197 add %g7, %o2, %o4, %tie_add(foo)
3198 sethi %tle_hix22(foo), %l1
3199 xor %l1, %tle_lox10(foo), %o5
3200 ld [%g7 + %o5], %o1"
3204 .section ".tdata","awT",@progbits
3207 addli r0, zero, tls_gd(foo)
3208 auli r0, zero, tls_gd_ha16(foo)
3209 addli r0, r0, tls_gd_lo16(foo)
3211 addli r0, zero, tls_ie(foo)
3212 auli r0, r0, tls_ie_ha16(foo)
3213 addli r0, r0, tls_ie_lo16(foo)'
3216 tls_as_opt="--fatal-warnings"
3220 .section ".tdata","awT",@progbits
3223 shl16insli r0, zero, hw0_last_tls_gd(foo)
3224 shl16insli r0, zero, hw1_last_tls_gd(foo)
3225 shl16insli r0, r0, hw0_tls_gd(foo)
3227 shl16insli r0, zero, hw1_last_tls_ie(foo)
3228 shl16insli r0, r0, hw0_tls_ie(foo)'
3231 tls_as_opt="--fatal-warnings"
3235 .section ".tdata","awT",@progbits
3238 movi a8, foo@TLSFUNC
3239 movi a10, foo@TLSARG
3240 callx8.tls a8, foo@TLSCALL'
3247 if test "x$enable_tls" = xno ; then
3248 : # TLS explicitly disabled.
3249 elif test "x$enable_tls" = xyes ; then
3250 set_have_as_tls=yes # TLS explicitly enabled.
3251 elif test -z "$tls_first_major"; then
3252 : # If we don't have a check, assume no support.
3254 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3255 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3256 [set_have_as_tls=yes])
3259 # TLS was introduced in the Solaris 9 FCS release. Support for GNU-style
3260 # TLS on x86 was only introduced in Solaris 9 4/04, replacing the earlier
3261 # Sun style that Sun ld and GCC don't support any longer.
3263 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3265 # Check ld and ld.so.1 TLS support.
3266 if echo "$ld_ver" | grep GNU > /dev/null; then
3267 # Assume all interesting versions of GNU ld have TLS support.
3268 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3272 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3274 min_tls_ld_vers_minor=374
3276 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3277 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3278 min_tls_ld_vers_minor=343
3281 if test "$ld_vers_major" -gt 1 || \
3282 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3288 AC_MSG_RESULT($ld_tls_support)
3291 save_LDFLAGS="$LDFLAGS"
3295 AC_MSG_CHECKING(library containing $tga_func)
3296 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3297 # (32-bit x86) only lived in libthread, so check for that. Keep
3298 # set_have_as_tls if found, disable if not.
3299 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3300 # Clear LIBS if we cannot support TLS.
3301 if test $set_have_as_tls = no; then
3304 # Always define LIB_TLS_SPEC, even without TLS support.
3305 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3306 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3307 AC_MSG_RESULT($LIBS)
3310 LDFLAGS="$save_LDFLAGS"
3313 if test $set_have_as_tls = yes ; then
3314 AC_DEFINE(HAVE_AS_TLS, 1,
3315 [Define if your assembler and linker support thread-local storage.])
3318 # Target-specific assembler checks.
3320 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3321 gcc_cv_ld_static_dynamic=no
3322 gcc_cv_ld_static_option='-Bstatic'
3323 gcc_cv_ld_dynamic_option='-Bdynamic'
3324 if test $in_tree_ld = yes ; then
3325 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3326 gcc_cv_ld_static_dynamic=yes
3328 elif test x$gcc_cv_ld != x; then
3329 # Check if linker supports -Bstatic/-Bdynamic option
3330 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3331 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3332 gcc_cv_ld_static_dynamic=yes
3335 # AIX ld uses -b flags
3336 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3337 gcc_cv_ld_static_dynamic=yes
3338 gcc_cv_ld_static_option="-bstatic"
3339 gcc_cv_ld_dynamic_option="-bdynamic"
3341 # HP-UX ld uses -a flags to select between shared and archive.
3343 if test x"$gnu_ld" = xno; then
3344 gcc_cv_ld_static_dynamic=yes
3345 gcc_cv_ld_static_option="-aarchive_shared"
3346 gcc_cv_ld_dynamic_option="-adefault"
3349 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3351 gcc_cv_ld_static_dynamic=yes
3356 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3357 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3358 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3359 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3360 [Define to the linker option to disable use of shared objects.])
3361 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3362 [Define to the linker option to enable use of shared objects.])
3364 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3366 if test x"$demangler_in_ld" = xyes; then
3367 AC_MSG_CHECKING(linker --demangle support)
3368 gcc_cv_ld_demangle=no
3369 if test $in_tree_ld = yes; then
3370 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3371 gcc_cv_ld_demangle=yes
3373 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3374 # Check if the GNU linker supports --demangle option
3375 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3376 gcc_cv_ld_demangle=yes
3379 if test x"$gcc_cv_ld_demangle" = xyes; then
3380 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3381 [Define if your linker supports --demangle option.])
3383 AC_MSG_RESULT($gcc_cv_ld_demangle)
3386 AC_MSG_CHECKING(linker plugin support)
3388 if test -f liblto_plugin.la; then
3389 save_ld_ver="$ld_ver"
3390 save_ld_vers_major="$ld_vers_major"
3391 save_ld_vers_minor="$ld_vers_minor"
3392 save_ld_is_gold="$ld_is_gold"
3396 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3398 # FIXME: ld_is_gold?
3399 ld_vers_major="$gcc_cv_gld_major_version"
3400 ld_vers_minor="$gcc_cv_gld_minor_version"
3402 # Determine plugin linker version.
3403 # FIXME: Partial duplicate from above, generalize.
3405 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3406 if echo "$ld_ver" | grep GNU > /dev/null; then
3407 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3409 ld_vers=`echo $ld_ver | sed -n \
3410 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3412 ld_vers=`echo $ld_ver | sed -n \
3413 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3415 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3416 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3421 # Determine plugin support.
3422 if echo "$ld_ver" | grep GNU > /dev/null; then
3423 # Require GNU ld or gold 2.21+ for plugin support by default.
3424 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3426 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3427 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3432 ld_ver="$save_ld_ver"
3433 ld_vers_major="$save_ld_vers_major"
3434 ld_vers_minor="$save_ld_vers_minor"
3435 ld_is_gold="$save_ld_is_gold"
3437 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3438 [Define to the level of your linker's plugin support.])
3439 AC_MSG_RESULT($gcc_cv_lto_plugin)
3442 # All TARGET_ABI_OSF targets.
3443 alpha*-*-linux* | alpha*-*-*bsd*)
3444 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3445 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3448 extbl $3, $2, $3 !lituse_bytoff!1
3449 ldq $2, a($29) !literal!1
3450 ldq $4, b($29) !literal!2
3451 ldq_u $3, 0($2) !lituse_base!1
3452 ldq $27, f($29) !literal!5
3453 jsr $26, ($27), f !lituse_jsr!5
3454 ldah $29, 0($26) !gpdisp!3
3455 lda $0, c($29) !gprel
3456 ldah $1, d($29) !gprelhigh
3457 lda $1, d($1) !gprellow
3458 lda $29, 0($29) !gpdisp!3],,
3459 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3460 [Define if your assembler supports explicit relocations.])])
3461 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3462 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3465 ldq $27, a($29) !literal!1
3466 jsr $26, ($27), a !lituse_jsrdirect!1],,
3467 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3468 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3472 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3473 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3474 [-no-mul-bug-abort], [.text],,
3475 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3476 [Define if your assembler supports the -no-mul-bug-abort option.])])
3480 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3481 [.register %g2, #scratch],,
3482 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3483 [Define if your assembler supports .register.])])
3485 gcc_GAS_CHECK_FEATURE([@%:@nobits], gcc_cv_as_sparc_nobits,,,
3486 [.section "nobits",#alloc,#write,#nobits
3487 .section "progbits",#alloc,#write,#progbits])
3488 AC_DEFINE_UNQUOTED(HAVE_AS_SPARC_NOBITS,
3489 [`if test $gcc_cv_as_sparc_nobits = yes; then echo 1; else echo 0; fi`],
3490 [Define to 1 if your assembler supports #nobits, 0 otherwise.])
3492 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3494 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3495 [Define if your assembler supports -relax option.])])
3497 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3498 gcc_cv_as_sparc_gotdata_op,,
3505 sethi %gdop_hix22(foo), %g1
3506 xor %g1, %gdop_lox10(foo), %g1
3507 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3508 [if test x$gcc_cv_ld != x \
3509 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3510 if test x$gcc_cv_objdump != x; then
3511 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3512 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3513 gcc_cv_as_sparc_gotdata_op=no
3515 gcc_cv_as_sparc_gotdata_op=yes
3520 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3521 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3523 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3524 gcc_cv_as_sparc_ua_pcrel,,
3532 .uaword %r_disp32(foo)],
3533 [if test x$gcc_cv_ld != x \
3534 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3535 gcc_cv_as_sparc_ua_pcrel=yes
3538 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3539 [Define if your assembler and linker support unaligned PC relative relocs.])
3541 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3542 gcc_cv_as_sparc_ua_pcrel_hidden,,
3547 .uaword %r_disp32(foo)
3548 .byte 0x32, 0x33, 0x34
3553 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3554 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3555 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3556 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3557 if $gcc_cv_objdump -R conftest 2> /dev/null \
3558 | grep 'DISP32' > /dev/null 2>&1; then
3561 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3565 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3566 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3567 ]) # unaligned pcrel relocs
3569 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3570 gcc_cv_as_sparc_offsetable_lo10,,
3573 or %g1, %lo(ab) + 12, %g1
3574 or %g1, %lo(ab + 12), %g1],
3575 [if test x$gcc_cv_objdump != x \
3576 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3577 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3578 gcc_cv_as_sparc_offsetable_lo10=yes
3580 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3581 [Define if your assembler supports offsetable %lo().])])
3583 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3584 gcc_cv_as_sparc_fmaf,,
3587 .register %g2, #scratch
3588 .register %g3, #scratch
3590 fmaddd %f0, %f2, %f4, %f6
3591 addxccc %g1, %g2, %g3
3592 fsrl32 %f2, %f4, %f8
3593 fnaddd %f10, %f12, %f14],,
3594 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3595 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3597 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3598 gcc_cv_as_sparc_sparc4,,
3601 .register %g2, #scratch
3602 .register %g3, #scratch
3605 1: cwbneg %g2, %g3, 1f
3608 aes_kexpand0 %f4, %f6, %f8
3609 des_round %f38, %f40, %f42, %f44
3610 camellia_f %f54, %f56, %f58, %f60
3611 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3612 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3613 [Define if your assembler supports SPARC4 instructions.])])
3617 i[34567]86-*-* | x86_64-*-*)
3621 # Full C++ conformance when using a shared libstdc++-v3 requires some
3622 # support from the Cygwin DLL, which in more recent versions exports
3623 # wrappers to aid in interposing and redirecting operators new, delete,
3624 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3625 # are configuring for a version of Cygwin that exports the wrappers.
3626 if test x$host = x$target; then
3627 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3629 # Can't check presence of libc functions during cross-compile, so
3630 # we just have to assume we're building for an up-to-date target.
3631 gcc_ac_cygwin_dll_wrappers=yes
3633 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3634 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3635 [Define if you want to generate code by default that assumes that the
3636 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3639 cygwin* | pe | mingw32* | interix*)
3640 # Recent binutils allows the three-operand form of ".comm" on PE. This
3641 # definition is used unconditionally to initialise the default state of
3642 # the target option variable that governs usage of the feature.
3643 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3644 [2,19,52],,[.comm foo,1,32])
3645 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3646 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3647 [Define if your assembler supports specifying the alignment
3648 of objects allocated using the GAS .comm command.])
3649 # Used for DWARF 2 in PE
3650 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3651 gcc_cv_as_ix86_pe_secrel32,
3657 [if test x$gcc_cv_ld != x \
3658 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3659 gcc_cv_as_ix86_pe_secrel32=yes
3662 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3663 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3664 # Test if the assembler supports the extended form of the .section
3665 # directive that specifies section alignment. LTO support uses this,
3666 # but normally only after installation, so we warn but don't fail the
3667 # configure if LTO is enabled but the assembler does not support it.
3668 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3669 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3670 if test x$gcc_cv_as_section_has_align != xyes; then
3671 case ",$enable_languages," in
3673 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3677 # Test if the assembler supports the section flag 'e' for specifying
3678 # an excluded section.
3679 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3683 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3684 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3685 [Define if your assembler supports specifying the section flag e.])
3689 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3690 gcc_cv_as_ix86_filds,,,
3691 [filds mem; fists mem],,
3692 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3693 [Define if your assembler uses filds and fists mnemonics.])])
3695 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3696 gcc_cv_as_ix86_fildq,,,
3697 [fildq mem; fistpq mem],,
3698 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3699 [Define if your assembler uses fildq and fistq mnemonics.])])
3701 gcc_GAS_CHECK_FEATURE([cmov syntax],
3702 gcc_cv_as_ix86_cmov_sun_syntax,,,
3703 [cmovl.l %edx, %eax],,
3704 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3705 [Define if your assembler supports the Sun syntax for cmov.])])
3707 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3708 gcc_cv_as_ix86_ffreep,,,
3710 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3711 [Define if your assembler supports the ffreep mnemonic.])])
3713 gcc_GAS_CHECK_FEATURE([.quad directive],
3714 gcc_cv_as_ix86_quad,,,
3716 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3717 [Define if your assembler supports the .quad directive.])])
3719 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3720 gcc_cv_as_ix86_sahf,,,
3723 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3724 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3726 gcc_GAS_CHECK_FEATURE([hle prefixes],
3727 gcc_cv_as_ix86_hle,,,
3728 [lock xacquire cmpxchg %esi, (%ecx)],,
3729 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3730 [Define if your assembler supports HLE prefixes.])])
3732 gcc_GAS_CHECK_FEATURE([swap suffix],
3733 gcc_cv_as_ix86_swap,,,
3734 [movl.s %esp, %ebp],,
3735 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3736 [Define if your assembler supports the swap suffix.])])
3738 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3739 gcc_cv_as_ix86_diff_sect_delta,,,
3747 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3748 [Define if your assembler supports the subtraction of symbols in different sections.])])
3750 # These two are used unconditionally by i386.[ch]; it is to be defined
3751 # to 1 if the feature is present, 0 otherwise.
3752 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3753 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3759 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3760 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3761 [Define true if the assembler supports '.long foo@GOTOFF'.])
3763 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3764 gcc_cv_as_ix86_rep_lock_prefix,,,
3770 lock addl %edi, (%eax,%esi)
3771 lock orl $0, (%esp)],,
3772 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3773 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3775 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3776 gcc_cv_as_ix86_tlsgdplt,,,
3777 [call tls_gd@tlsgdplt],
3778 [if test x$gcc_cv_ld != x \
3779 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3780 gcc_cv_as_ix86_tlsgdplt=yes
3783 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3784 [Define if your assembler and linker support @tlsgdplt.])])
3786 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3787 gcc_cv_as_ix86_tlsldmplt,,,
3789 call tls_ld@tlsldmplt],
3790 [if test x$gcc_cv_ld != x \
3791 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3792 gcc_cv_as_ix86_tlsldmplt=yes
3795 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3796 [Define if your assembler and linker support @tlsldmplt.])])
3801 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3802 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3804 addl r15 = @ltoffx(x#), gp
3806 ld8.mov r16 = [[r15]], x#],,
3807 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3808 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3814 *-*-aix*) conftest_s=' .machine "pwr5"
3818 gcc_GAS_CHECK_FEATURE([.machine directive support],
3819 gcc_cv_as_machine_directive,,,
3820 [ .machine ppc7400])
3821 if test x$gcc_cv_as_machine_directive != xyes; then
3822 echo "*** This target requires an assembler supporting \".machine\"" >&2
3823 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3824 test x$build = x$target && exit 1
3828 *) conftest_s=' .machine power4
3833 gcc_GAS_CHECK_FEATURE([mfcr field support],
3834 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3836 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3837 [Define if your assembler supports mfcr field.])])
3840 *-*-aix*) conftest_s=' .machine "pwr5"
3843 *) conftest_s=' .machine power5
3848 gcc_GAS_CHECK_FEATURE([popcntb support],
3849 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3851 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3852 [Define if your assembler supports popcntb field.])])
3855 *-*-aix*) conftest_s=' .machine "pwr5x"
3858 *) conftest_s=' .machine power5
3863 gcc_GAS_CHECK_FEATURE([fp round support],
3864 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3866 [AC_DEFINE(HAVE_AS_FPRND, 1,
3867 [Define if your assembler supports fprnd.])])
3870 *-*-aix*) conftest_s=' .machine "pwr6"
3873 *) conftest_s=' .machine power6
3878 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3879 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3881 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3882 [Define if your assembler supports mffgpr and mftgpr.])])
3885 *-*-aix*) conftest_s=' .csect .text[[PR]]
3887 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3891 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3892 *) conftest_s=' .text
3894 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3897 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3898 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3900 [AC_DEFINE(HAVE_AS_REL16, 1,
3901 [Define if your assembler supports R_PPC_REL16 relocs.])])
3904 *-*-aix*) conftest_s=' .machine "pwr6"
3907 *) conftest_s=' .machine power6
3912 gcc_GAS_CHECK_FEATURE([compare bytes support],
3913 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3915 [AC_DEFINE(HAVE_AS_CMPB, 1,
3916 [Define if your assembler supports cmpb.])])
3919 *-*-aix*) conftest_s=' .machine "pwr6"
3922 *) conftest_s=' .machine power6
3927 gcc_GAS_CHECK_FEATURE([decimal float support],
3928 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3930 [AC_DEFINE(HAVE_AS_DFP, 1,
3931 [Define if your assembler supports DFP instructions.])])
3934 *-*-aix*) conftest_s=' .machine "pwr7"
3937 *) conftest_s=' .machine power7
3942 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3943 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3945 [AC_DEFINE(HAVE_AS_VSX, 1,
3946 [Define if your assembler supports VSX instructions.])])
3949 *-*-aix*) conftest_s=' .machine "pwr7"
3952 *) conftest_s=' .machine power7
3957 gcc_GAS_CHECK_FEATURE([popcntd support],
3958 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3960 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3961 [Define if your assembler supports POPCNTD instructions.])])
3964 *-*-aix*) conftest_s=' .machine "pwr8"
3965 .csect .text[[PR]]';;
3966 *) conftest_s=' .machine power8
3970 gcc_GAS_CHECK_FEATURE([power8 support],
3971 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
3973 [AC_DEFINE(HAVE_AS_POWER8, 1,
3974 [Define if your assembler supports POWER8 instructions.])])
3977 *-*-aix*) conftest_s=' .csect .text[[PR]]
3979 *) conftest_s=' .text
3983 gcc_GAS_CHECK_FEATURE([lwsync support],
3984 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3986 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3987 [Define if your assembler supports LWSYNC instructions.])])
3990 *-*-aix*) conftest_s=' .machine "476"
3993 *) conftest_s=' .machine "476"
3998 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3999 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4001 [AC_DEFINE(HAVE_AS_DCI, 1,
4002 [Define if your assembler supports the DCI/ICI instructions.])])
4004 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4005 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4006 [.gnu_attribute 4,1],,
4007 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4008 [Define if your assembler supports .gnu_attribute.])])
4010 gcc_GAS_CHECK_FEATURE([tls marker support],
4011 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4012 [ bl __tls_get_addr(x@tlsgd)],,
4013 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4014 [Define if your assembler supports arg info for __tls_get_addr.])])
4018 gcc_GAS_CHECK_FEATURE([.ref support],
4019 gcc_cv_as_aix_ref, [2,21,0],,
4020 [ .csect stuff[[rw]]
4026 [AC_DEFINE(HAVE_AS_REF, 1,
4027 [Define if your assembler supports .ref])])
4033 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4034 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4035 [ lw $4,%gp_rel(foo)($4)],,
4036 [if test x$target_cpu_default = x
4037 then target_cpu_default=MASK_EXPLICIT_RELOCS
4038 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4040 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4041 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4042 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4043 [Define if the assembler understands -mno-shared.])])
4045 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4046 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4047 [.gnu_attribute 4,1],,
4048 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4049 [Define if your assembler supports .gnu_attribute.])])
4051 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4052 gcc_cv_as_mips_dtprelword, [2,18,0],,
4053 [.section .tdata,"awT",@progbits
4057 .dtprelword x+0x8000],,
4058 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4059 [Define if your assembler supports .dtprelword.])])
4061 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4062 gcc_cv_as_mips_dspr1_mult,,,
4072 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4073 [Define if your assembler supports DSPR1 mult.])])
4075 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4076 gcc_cv_as_ld_jalr_reloc=no
4077 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4078 if test $in_tree_ld = yes ; then
4079 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4080 && test $in_tree_ld_is_elf = yes; then
4081 gcc_cv_as_ld_jalr_reloc=yes
4083 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4084 echo ' .ent x' > conftest.s
4085 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
4086 echo ' ld $25,%call16(y)($28)' >> conftest.s
4087 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4088 echo '1: jalr $25' >> conftest.s
4089 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4090 echo '1: jalr $25' >> conftest.s
4091 echo ' .end x' >> conftest.s
4092 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4093 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4094 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4095 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4096 gcc_cv_as_ld_jalr_reloc=yes
4102 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4103 if test x$target_cpu_default = x; then
4104 target_cpu_default=MASK_RELAX_PIC_CALLS
4106 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4109 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4111 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4112 [gcc_cv_ld_mips_personality_relaxation],
4113 [gcc_cv_ld_mips_personality_relaxation=no
4114 if test $in_tree_ld = yes ; then
4115 if test "$gcc_cv_gld_major_version" -eq 2 \
4116 -a "$gcc_cv_gld_minor_version" -ge 21 \
4117 -o "$gcc_cv_gld_major_version" -gt 2; then
4118 gcc_cv_ld_mips_personality_relaxation=yes
4120 elif test x$gcc_cv_as != x \
4121 -a x$gcc_cv_ld != x \
4122 -a x$gcc_cv_readelf != x ; then
4123 cat > conftest.s <<EOF
4125 .cfi_personality 0x80,indirect_ptr
4132 .section .data,"aw",@progbits
4136 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4137 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4138 if $gcc_cv_readelf -d conftest 2>&1 \
4139 | grep TEXTREL > /dev/null 2>&1; then
4141 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4142 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4145 gcc_cv_ld_mips_personality_relaxation=yes
4149 rm -f conftest.s conftest.o conftest])
4150 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4151 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4152 [Define if your linker can relax absolute .eh_frame personality
4153 pointers into PC-relative form.])
4158 # Mips and HP-UX need the GNU assembler.
4159 # Linux on IA64 might be able to use the Intel assembler.
4162 mips*-*-* | *-*-hpux* )
4163 if test x$gas_flag = xyes \
4164 || test x"$host" != x"$build" \
4165 || test ! -x "$gcc_cv_as" \
4166 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4169 echo "*** This configuration requires the GNU assembler" >&2
4175 # ??? Not all targets support dwarf2 debug_line, even within a version
4176 # of gas. Moreover, we need to emit a valid instruction to trigger any
4177 # info to the output file. So, as supported targets are added to gas 2.11,
4178 # add some instruction here to (also) show we expect this might work.
4179 # ??? Once 2.11 is released, probably need to add first known working
4180 # version to the per-target configury.
4182 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4183 | pa | rs6000 | score | sparc | spu | tilegx | tilepro | xstormy16 | xtensa)
4193 if test x"$insn" != x; then
4195 .file 1 \"conftest.s\"
4198 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4199 gcc_cv_as_dwarf2_debug_line,
4200 [elf,2,11,0],, [$conftest_s],
4201 [if test x$gcc_cv_objdump != x \
4202 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4203 | grep debug_line > /dev/null 2>&1; then
4204 gcc_cv_as_dwarf2_debug_line=yes
4207 # The .debug_line file table must be in the exact order that
4208 # we specified the files, since these indices are also used
4209 # by DW_AT_decl_file. Approximate this test by testing if
4210 # the assembler bitches if the same index is assigned twice.
4211 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4212 gcc_cv_as_dwarf2_file_buggy,,,
4216 if test $gcc_cv_as_dwarf2_debug_line = yes \
4217 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4218 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4219 [Define if your assembler supports dwarf2 .file/.loc directives,
4220 and preserves file table indices exactly as given.])
4223 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4224 gcc_cv_as_gdwarf2_flag,
4225 [elf,2,11,0], [--gdwarf2], [$insn],,
4226 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4227 [Define if your assembler supports the --gdwarf2 option.])])
4229 gcc_GAS_CHECK_FEATURE([--gstabs option],
4230 gcc_cv_as_gstabs_flag,
4231 [elf,2,11,0], [--gstabs], [$insn],
4232 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4233 # and warns about it, but still exits successfully. So check for
4235 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4237 else gcc_cv_as_gstabs_flag=yes
4239 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4240 [Define if your assembler supports the --gstabs option.])])
4242 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4243 gcc_cv_as_debug_prefix_map_flag,
4244 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4245 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4246 [Define if your assembler supports the --debug-prefix-map option.])])
4249 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4252 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4253 [Define if your assembler supports .lcomm with an alignment field.])])
4255 AC_ARG_ENABLE(gnu-unique-object,
4256 [AS_HELP_STRING([--enable-gnu-unique-object],
4257 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4258 [case $enable_gnu_unique_object in
4260 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4261 Valid choices are 'yes' and 'no'.]) ;;
4263 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4265 [.type foo, '$target_type_format_char'gnu_unique_object],,
4266 # We need to unquote above to to use the definition from config.gcc.
4267 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4268 [[if test x$host = x$build -a x$host = x$target &&
4269 ldd --version 2>/dev/null &&
4270 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4271 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4272 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4273 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4274 if test "$glibcnum" -ge 2011 ; then
4275 enable_gnu_unique_object=yes
4278 if test x$enable_gnu_unique_object = xyes; then
4279 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4280 [Define if your assembler supports @gnu_unique_object.])
4283 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4284 [gcc_cv_as_line_zero],
4285 [gcc_cv_as_line_zero=no
4286 if test $in_tree_gas = yes; then
4287 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4288 elif test "x$gcc_cv_as" != x; then
4289 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4290 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4291 test "x`cat conftest.out`" = x
4293 gcc_cv_as_line_zero=yes
4295 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4296 cat conftest.s >&AS_MESSAGE_LOG_FD
4297 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4298 cat conftest.out >&AS_MESSAGE_LOG_FD
4300 rm -f conftest.o conftest.s conftest.out
4302 if test "x$gcc_cv_as_line_zero" = xyes; then
4303 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4304 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4307 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4308 gcc_cv_ld_eh_frame_hdr=no
4309 if test $in_tree_ld = yes ; then
4310 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4311 && test $in_tree_ld_is_elf = yes; then
4312 gcc_cv_ld_eh_frame_hdr=yes
4314 elif test x$gcc_cv_ld != x; then
4315 if echo "$ld_ver" | grep GNU > /dev/null; then
4316 # Check if linker supports --eh-frame-hdr option
4317 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4318 gcc_cv_ld_eh_frame_hdr=yes
4323 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4324 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4325 gcc_cv_ld_eh_frame_hdr=yes
4331 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4332 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4333 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4334 [Define if your linker supports .eh_frame_hdr.])
4336 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4338 AC_MSG_CHECKING(linker position independent executable support)
4340 if test $in_tree_ld = yes ; then
4341 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4342 && test $in_tree_ld_is_elf = yes; then
4345 elif test x$gcc_cv_ld != x; then
4346 # Check if linker supports -pie option
4347 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4351 if test x"$gcc_cv_ld_pie" = xyes; then
4352 AC_DEFINE(HAVE_LD_PIE, 1,
4353 [Define if your linker supports -pie option.])
4355 AC_MSG_RESULT($gcc_cv_ld_pie)
4357 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4358 gcc_cv_ld_eh_gc_sections=no
4359 if test $in_tree_ld = yes ; then
4360 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4361 && test $in_tree_ld_is_elf = yes; then
4362 gcc_cv_ld_eh_gc_sections=yes
4364 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4365 cat > conftest.s <<EOF
4368 .type _start, @function
4371 .size _start, .-_start
4372 .section .text.foo,"ax",@progbits
4373 .type foo, @function
4377 .section .gcc_except_table.foo,"a",@progbits
4380 .section .eh_frame,"a",@progbits
4383 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4384 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4385 | grep "gc-sections option ignored" > /dev/null; then
4386 gcc_cv_ld_eh_gc_sections=no
4387 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4388 | grep gcc_except_table > /dev/null; then
4389 gcc_cv_ld_eh_gc_sections=yes
4390 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4391 if test x$gcc_cv_as_comdat_group != xyes; then
4392 gcc_cv_ld_eh_gc_sections=no
4393 cat > conftest.s <<EOF
4396 .type _start, @function
4399 .size _start, .-_start
4400 .section .gnu.linkonce.t.foo,"ax",@progbits
4401 .type foo, @function
4405 .section .gcc_except_table.foo,"a",@progbits
4408 .section .eh_frame,"a",@progbits
4411 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4412 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4413 | grep "gc-sections option ignored" > /dev/null; then
4414 gcc_cv_ld_eh_gc_sections=no
4415 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4416 | grep gcc_except_table > /dev/null; then
4417 gcc_cv_ld_eh_gc_sections=yes
4423 rm -f conftest.s conftest.o conftest
4427 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4428 gcc_cv_ld_eh_gc_sections=no
4431 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4432 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4433 [Define if your linker supports garbage collection of
4434 sections in presence of EH frames.])
4436 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4438 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4439 gcc_cv_ld_eh_gc_sections_bug=no
4440 if test $in_tree_ld = yes ; then
4441 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4442 && test $in_tree_ld_is_elf = yes; then
4443 gcc_cv_ld_eh_gc_sections_bug=yes
4445 elif test x$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
4446 gcc_cv_ld_eh_gc_sections_bug=yes
4447 cat > conftest.s <<EOF
4450 .type _start, @function
4453 .size _start, .-_start
4454 .section .text.startup.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
4469 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4470 | grep gcc_except_table > /dev/null; then
4471 gcc_cv_ld_eh_gc_sections_bug=no
4474 rm -f conftest.s conftest.o conftest
4476 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4477 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4478 [Define if your linker has buggy garbage collection of
4479 sections support when .text.startup.foo like sections are used.])
4481 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4487 AC_CACHE_CHECK(linker --as-needed support,
4488 gcc_cv_ld_as_needed,
4489 [gcc_cv_ld_as_needed=no
4490 if test $in_tree_ld = yes ; then
4491 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4492 && test $in_tree_ld_is_elf = yes; then
4493 gcc_cv_ld_as_needed=yes
4495 elif test x$gcc_cv_ld != x; then
4496 # Check if linker supports --as-needed and --no-as-needed options
4497 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4498 gcc_cv_ld_as_needed=yes
4502 if test x"$gcc_cv_ld_as_needed" = xyes; then
4503 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4504 [Define if your linker supports --as-needed and --no-as-needed options.])
4507 case "$target:$tm_file" in
4508 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4511 emul_name="-melf64lppc"
4514 emul_name="-melf64ppc"
4517 emul_name="-melf64ppc_fbsd"
4520 AC_CACHE_CHECK(linker support for omitting dot symbols,
4521 gcc_cv_ld_no_dot_syms,
4522 [gcc_cv_ld_no_dot_syms=no
4523 if test x"$ld_is_gold" = xyes; then
4524 gcc_cv_ld_no_dot_syms=yes
4525 elif test $in_tree_ld = yes ; then
4526 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4527 gcc_cv_ld_no_dot_syms=yes
4529 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4530 cat > conftest1.s <<EOF
4534 cat > conftest2.s <<EOF
4535 .section ".opd","aw"
4540 .quad .LEfoo,.TOC.@tocbase,0
4546 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4547 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4548 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4549 gcc_cv_ld_no_dot_syms=yes
4551 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4554 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4555 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4556 [Define if your PowerPC64 linker only needs function descriptor syms.])
4559 AC_CACHE_CHECK(linker large toc support,
4560 gcc_cv_ld_large_toc,
4561 [gcc_cv_ld_large_toc=no
4562 if test x"$ld_is_gold" = xyes; then
4563 gcc_cv_ld_large_toc=yes
4564 elif test $in_tree_ld = yes ; then
4565 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4566 gcc_cv_ld_large_toc=yes
4568 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4569 cat > conftest.s <<EOF
4570 .section ".tbss","awT",@nobits
4576 addis 9,13,ie0@got@tprel@ha
4577 ld 9,ie0@got@tprel@l(9)
4579 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4580 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4581 gcc_cv_ld_large_toc=yes
4583 rm -f conftest conftest.o conftest.s
4586 if test x"$gcc_cv_ld_large_toc" = xyes; then
4587 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4588 [Define if your PowerPC64 linker supports a large TOC.])
4595 AC_CACHE_CHECK(linker large toc support,
4596 gcc_cv_ld_large_toc,
4597 [gcc_cv_ld_large_toc=no
4598 if test x$gcc_cv_as != x ; then
4599 cat > conftest.s <<EOF
4609 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
4610 gcc_cv_ld_large_toc=yes
4612 rm -f conftest conftest.o conftest.s
4615 if test x"$gcc_cv_ld_large_toc" = xyes; then
4616 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4617 [Define if your PowerPC64 linker supports a large TOC.])
4622 AC_CACHE_CHECK(linker --build-id support,
4624 [gcc_cv_ld_buildid=no
4625 if test $in_tree_ld = yes ; then
4626 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4627 "$gcc_cv_gld_minor_version" -ge 18 -o \
4628 "$gcc_cv_gld_major_version" -gt 2 \
4629 && test $in_tree_ld_is_elf = yes; then
4630 gcc_cv_ld_buildid=yes
4632 elif test x$gcc_cv_ld != x; then
4633 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4634 gcc_cv_ld_buildid=yes
4637 if test x"$gcc_cv_ld_buildid" = xyes; then
4638 AC_DEFINE(HAVE_LD_BUILDID, 1,
4639 [Define if your linker supports --build-id.])
4642 AC_ARG_ENABLE(linker-build-id,
4643 [AS_HELP_STRING([--enable-linker-build-id],
4644 [compiler will always pass --build-id to linker])],
4646 enable_linker_build_id=no)
4648 if test x"$enable_linker_build_id" = xyes; then
4649 if test x"$gcc_cv_ld_buildid" = xyes; then
4650 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4651 [Define if gcc should always pass --build-id to linker.])
4653 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4657 # In binutils 2.21, GNU ld gained support for new emulations fully
4658 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4659 AC_CACHE_CHECK(linker *_sol2 emulation support,
4660 gcc_cv_ld_sol2_emulation,
4661 [gcc_cv_ld_sol2_emulation=no
4662 if test $in_tree_ld = yes ; then
4663 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4664 "$gcc_cv_gld_minor_version" -ge 21 -o \
4665 "$gcc_cv_gld_major_version" -gt 2 \
4666 && test $in_tree_ld_is_elf = yes; then
4667 gcc_cv_ld_sol2_emulation=yes
4669 elif test x$gcc_cv_ld != x; then
4670 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4671 grep _sol2 > /dev/null; then
4672 gcc_cv_ld_sol2_emulation=yes
4675 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4676 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4677 [Define if your linker supports the *_sol2 emulations.])
4680 AC_CACHE_CHECK(linker --sysroot support,
4682 [gcc_cv_ld_sysroot=no
4683 if test $in_tree_ld = yes ; then
4684 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4685 gcc_cv_ld_sysroot=yes
4687 elif test x$gcc_cv_ld != x; then
4688 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4689 gcc_cv_ld_sysroot=yes
4692 if test x"$gcc_cv_ld_sysroot" = xyes; then
4693 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4694 [Define if your linker supports --sysroot.])
4697 if test x$with_sysroot = x && test x$host = x$target \
4698 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4699 && test "$prefix" != "NONE"; then
4700 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4701 [Define to PREFIX/include if cpp should also search that directory.])
4704 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4705 if test "x$with_headers" != x; then
4706 target_header_dir=$with_headers
4707 elif test "x$with_sysroot" = x; then
4708 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
4709 elif test "x$with_build_sysroot" != "x"; then
4710 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4711 elif test "x$with_sysroot" = xyes; then
4712 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4714 target_header_dir="${with_sysroot}${native_system_header_dir}"
4717 target_header_dir=${native_system_header_dir}
4720 # Test for stack protector support in target C library.
4721 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4722 gcc_cv_libc_provides_ssp,
4723 [gcc_cv_libc_provides_ssp=no
4725 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4726 [# glibc 2.4 and later provides __stack_chk_fail and
4727 # either __stack_chk_guard, or TLS access to stack guard canary.
4728 if test -f $target_header_dir/features.h \
4729 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4730 $target_header_dir/features.h > /dev/null; then
4731 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4732 $target_header_dir/features.h > /dev/null; then
4733 gcc_cv_libc_provides_ssp=yes
4734 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4735 $target_header_dir/features.h > /dev/null \
4736 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4737 $target_header_dir/features.h > /dev/null; then
4738 gcc_cv_libc_provides_ssp=yes
4739 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4740 $target_header_dir/features.h > /dev/null && \
4741 test -f $target_header_dir/bits/uClibc_config.h && \
4742 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4743 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4744 gcc_cv_libc_provides_ssp=yes
4746 # all versions of Bionic support stack protector
4747 elif test -f $target_header_dir/sys/cdefs.h \
4748 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
4749 $target_header_dir/sys/cdefs.h > /dev/null; then
4750 gcc_cv_libc_provides_ssp=yes
4754 # Avoid complicated tests (see
4755 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4756 # simply assert that glibc does provide this, which is true for all
4757 # realistically usable GNU/Hurd configurations.
4758 gcc_cv_libc_provides_ssp=yes;;
4759 *-*-darwin* | *-*-freebsd*)
4760 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4761 [echo "no __stack_chk_fail on this target"])
4763 *) gcc_cv_libc_provides_ssp=no ;;
4766 if test x$gcc_cv_libc_provides_ssp = xyes; then
4767 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4768 [Define if your target C library provides stack protector support])
4771 # Test for <sys/sdt.h> on the target.
4772 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4773 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4775 if test -f $target_header_dir/sys/sdt.h; then
4777 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4778 [Define if your target C library provides sys/sdt.h])
4780 AC_MSG_RESULT($have_sys_sdt_h)
4782 # Check if TFmode long double should be used by default or not.
4783 # Some glibc targets used DFmode long double, but with glibc 2.4
4784 # and later they can use TFmode.
4786 powerpc*-*-linux* | \
4790 AC_ARG_WITH(long-double-128,
4791 [AS_HELP_STRING([--with-long-double-128],
4792 [use 128-bit long double by default])],
4793 gcc_cv_target_ldbl128="$with_long_double_128",
4794 [[gcc_cv_target_ldbl128=no
4795 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4796 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4797 && gcc_cv_target_ldbl128=yes
4801 if test x$gcc_cv_target_ldbl128 = xyes; then
4802 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4803 [Define if TFmode long double should be the default])
4806 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4807 gcc_cv_target_dl_iterate_phdr=unknown
4809 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
4810 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
4811 # libdl there, both complicating its use and breaking compatibility
4812 # between Solaris 10 updates.
4813 *-*-solaris2.1[[1-9]]*)
4814 # <link.h> needs both a dl_iterate_phdr declaration and support for
4815 # compilation with largefile support.
4816 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4817 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4818 gcc_cv_target_dl_iterate_phdr=yes
4820 gcc_cv_target_dl_iterate_phdr=no
4824 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4825 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4826 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4827 [Define if your target C library provides the `dl_iterate_phdr' function.])
4829 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4831 # We no longer support different GC mechanisms. Emit an error if
4832 # the user configures with --with-gc.
4834 [AS_HELP_STRING([--with-gc={page,zone}],
4835 [this option is not supported anymore. It used to choose
4836 the garbage collection mechanism to use with the compiler])],
4837 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
4840 # Libraries to use on the host. This will normally be set by the top
4841 # level Makefile. Here we simply capture the value for our Makefile.
4842 if test -z "${HOST_LIBS+set}"; then
4847 # Use the system's zlib library.
4849 zlibinc="-I\$(srcdir)/../zlib"
4850 AC_ARG_WITH(system-zlib,
4851 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4858 dnl Very limited version of automake's enable-maintainer-mode
4860 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4861 dnl maintainer-mode is disabled by default
4862 AC_ARG_ENABLE(maintainer-mode,
4863 [AS_HELP_STRING([--enable-maintainer-mode],
4864 [enable make rules and dependencies not useful
4865 (and sometimes confusing) to the casual installer])],
4866 maintainer_mode=$enableval,
4869 AC_MSG_RESULT($maintainer_mode)
4871 if test "$maintainer_mode" = "yes"; then
4882 # Make empty files to contain the specs and options for each language.
4883 # Then add #include lines to for a compiler that has specs and/or options.
4889 # These (without "all_") are set in each config-lang.in.
4890 # `language' must be a single word so is spelled singularly.
4893 all_outputs='Makefile'
4894 # List of language makefile fragments.
4896 # Additional files for gengtype
4897 all_gtfiles="$target_gtfiles"
4899 # These are the languages that are set in --enable-languages,
4900 # and are available in the GCC tree.
4901 all_selected_languages=
4903 # Add the language fragments.
4904 # Languages are added via two mechanisms. Some information must be
4905 # recorded in makefile variables, these are defined in config-lang.in.
4906 # We accumulate them and plug them into the main Makefile.
4907 # The other mechanism is a set of hooks for each of the main targets
4908 # like `clean', `install', etc.
4910 language_hooks="Make-hooks"
4912 for lang in ${srcdir}/*/config-lang.in
4915 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4917 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4918 if test "x$lang_alias" = x
4920 echo "$lang doesn't set \$language." 1>&2
4923 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4924 subdirs="$subdirs $subdir"
4926 # $gcc_subdir is where the gcc integration files are to be found
4927 # for a language, both for internal compiler purposes (compiler
4928 # sources implementing front-end to GCC tree converters), and for
4929 # build infrastructure purposes (Make-lang.in, etc.)
4931 # This will be <subdir> (relative to $srcdir) if a line like
4932 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4933 # is found in <langdir>/config-lang.in, and will remain <langdir>
4936 # Except for the language alias (fetched above), the regular
4937 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4938 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4939 # only this and the language alias.
4941 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4942 if [ "$gcc_subdir" = "" ]; then
4943 gcc_subdir="$subdir"
4946 case ",$enable_languages," in
4948 all_selected_languages="$all_selected_languages $lang_alias"
4949 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4950 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4962 . ${srcdir}/$gcc_subdir/config-lang.in
4963 if test "x$language" = x
4965 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4970 case ",$enable_languages," in
4973 for i in $subdir_requires; do
4974 test -f "${srcdir}/$i/config-lang.in" && continue
4982 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4983 if test -f $srcdir/$gcc_subdir/lang.opt; then
4984 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4985 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4987 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4988 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4990 all_languages="$all_languages $language"
4991 all_compilers="$all_compilers $compilers"
4992 all_outputs="$all_outputs $outputs"
4993 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4994 case ",$enable_languages," in
4996 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4998 AC_SUBST(enable_lto)
5005 for language in $all_selected_languages
5007 check_languages="$check_languages check-$language"
5010 # We link each language in with a set of hooks, reached indirectly via
5011 # lang.${target}. Only do so for selected languages.
5015 target_list="all.cross start.encap rest.encap tags \
5016 install-common install-man install-info install-pdf install-html dvi \
5017 pdf html uninstall info man srcextra srcman srcinfo \
5018 mostlyclean clean distclean maintainer-clean install-plugin"
5020 for t in $target_list
5023 for lang in $all_selected_languages
5027 echo "lang.$t: $x" >> Make-hooks
5031 # Option include files
5034 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5035 option_includes="option-includes.mk"
5036 AC_SUBST_FILE(option_includes)
5044 echo "dir ." > .gdbinit
5045 echo "dir ${srcdir}" >> .gdbinit
5046 if test x$gdb_needs_out_file_path = xyes
5048 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5050 if test "x$subdirs" != x; then
5053 echo "dir ${srcdir}/$s" >> .gdbinit
5056 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5058 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5059 AC_SUBST(gcc_tooldir)
5062 # Find a directory in which to install a shared libgcc.
5064 AC_ARG_ENABLE(version-specific-runtime-libs,
5065 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5066 [specify that runtime libraries should be
5067 installed in a compiler-specific directory])])
5069 # Substitute configuration variables
5072 AC_SUBST(all_compilers)
5073 AC_SUBST(all_gtfiles)
5074 AC_SUBST(all_lang_makefrags)
5075 AC_SUBST(all_languages)
5076 AC_SUBST(all_selected_languages)
5077 AC_SUBST(build_exeext)
5078 AC_SUBST(build_install_headers_dir)
5079 AC_SUBST(build_xm_file_list)
5080 AC_SUBST(build_xm_include_list)
5081 AC_SUBST(build_xm_defines)
5082 AC_SUBST(build_file_translate)
5083 AC_SUBST(check_languages)
5084 AC_SUBST(cpp_install_dir)
5085 AC_SUBST(xmake_file)
5086 AC_SUBST(tmake_file)
5087 AC_SUBST(TM_ENDIAN_CONFIG)
5088 AC_SUBST(TM_MULTILIB_CONFIG)
5089 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5090 AC_SUBST(extra_gcc_objs)
5091 AC_SUBST(user_headers_inc_next_pre)
5092 AC_SUBST(user_headers_inc_next_post)
5093 AC_SUBST(extra_headers_list)
5094 AC_SUBST(extra_objs)
5095 AC_SUBST(extra_programs)
5096 AC_SUBST(float_h_file)
5097 AC_SUBST(gcc_config_arguments)
5098 AC_SUBST(gcc_gxx_include_dir)
5099 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5100 AC_SUBST(host_exeext)
5101 AC_SUBST(host_xm_file_list)
5102 AC_SUBST(host_xm_include_list)
5103 AC_SUBST(host_xm_defines)
5104 AC_SUBST(out_host_hook_obj)
5106 AC_SUBST(lang_opt_files)
5107 AC_SUBST(lang_specs_files)
5108 AC_SUBST(lang_tree_files)
5109 AC_SUBST(local_prefix)
5111 AC_SUBST(objc_boehm_gc)
5113 AC_SUBST(out_object_file)
5114 AC_SUBST(common_out_file)
5115 AC_SUBST(common_out_object_file)
5116 AC_SUBST(tm_file_list)
5117 AC_SUBST(tm_include_list)
5118 AC_SUBST(tm_defines)
5119 AC_SUBST(tm_p_file_list)
5120 AC_SUBST(tm_p_include_list)
5121 AC_SUBST(xm_file_list)
5122 AC_SUBST(xm_include_list)
5123 AC_SUBST(xm_defines)
5124 AC_SUBST(use_gcc_stdint)
5125 AC_SUBST(c_target_objs)
5126 AC_SUBST(cxx_target_objs)
5127 AC_SUBST(fortran_target_objs)
5128 AC_SUBST(target_cpu_default)
5130 AC_SUBST_FILE(language_hooks)
5133 if test x${build} = x${host} ; then
5134 if test x${host} = x${target} ; then
5135 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5137 echo "Links are now set up to build a cross-compiler" 1>&2
5138 echo " from ${host} to ${target}." 1>&2
5141 if test x${host} = x${target} ; then
5142 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5143 echo " for ${target}." 1>&2
5145 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5146 echo " from ${host} to ${target}." 1>&2
5150 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5151 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5153 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5154 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5156 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5157 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5158 if test "x${CLOOGLIBS}" != "x" ; then
5159 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5162 # Check for plugin support
5163 AC_ARG_ENABLE(plugin,
5164 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5165 enable_plugin=$enableval,
5166 enable_plugin=yes; default_plugin=yes)
5172 if test x$build = x$host; then
5173 export_sym_check="nm${exeext} -g"
5174 elif test x$host = x$target; then
5175 export_sym_check="$gcc_cv_nm -g"
5181 if test x$build = x$host; then
5182 export_sym_check="objdump${exeext} -T"
5183 elif test x$host = x$target; then
5184 export_sym_check="$gcc_cv_objdump -T"
5191 if test x"$enable_plugin" = x"yes"; then
5193 AC_MSG_CHECKING([for exported symbols])
5194 if test "x$export_sym_check" != x; then
5195 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5196 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
5197 if $export_sym_check conftest | grep foobar > /dev/null; then
5198 : # No need to use a flag
5199 AC_MSG_RESULT([yes])
5201 AC_MSG_RESULT([yes])
5202 AC_MSG_CHECKING([for -rdynamic])
5203 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
5204 if $export_sym_check conftest | grep foobar > /dev/null; then
5206 pluginlibs="-rdynamic"
5211 AC_MSG_RESULT([$plugin_rdynamic])
5214 AC_MSG_RESULT([unable to check])
5219 AC_SEARCH_LIBS([dlopen], [dl])
5220 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5221 pluginlibs="$pluginlibs -ldl"
5225 # Check that we can build shared objects with -fPIC -shared
5226 saved_LDFLAGS="$LDFLAGS"
5227 saved_CFLAGS="$CFLAGS"
5230 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5231 CFLAGS="$CFLAGS -fPIC"
5232 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5235 CFLAGS="$CFLAGS -fPIC"
5236 LDFLAGS="$LDFLAGS -fPIC -shared"
5239 AC_MSG_CHECKING([for -fPIC -shared])
5241 [extern int X;],[return X == 0;],
5242 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5243 [AC_MSG_RESULT([no]); have_pic_shared=no])
5244 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5248 LDFLAGS="$saved_LDFLAGS"
5249 CFLAGS="$saved_CFLAGS"
5251 # If plugin support had been requested but not available, fail.
5252 if test x"$enable_plugin" = x"no" ; then
5253 if test x"$default_plugin" != x"yes"; then
5255 Building GCC with plugin support requires a host that supports
5256 -fPIC, -shared, -ldl and -rdynamic.])
5261 AC_SUBST(pluginlibs)
5262 AC_SUBST(enable_plugin)
5263 if test x"$enable_plugin" = x"yes"; then
5264 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5268 AC_ARG_ENABLE(libquadmath-support,
5269 [AS_HELP_STRING([--disable-libquadmath-support],
5270 [disable libquadmath support for Fortran])],
5271 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5272 ENABLE_LIBQUADMATH_SUPPORT=yes)
5273 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5274 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5275 [Define to 1 to enable libquadmath support])
5279 # Specify what hash style to use by default.
5280 AC_ARG_WITH([linker-hash-style],
5281 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5282 [specify the linker hash style])],
5283 [case x"$withval" in
5285 LINKER_HASH_STYLE=sysv
5288 LINKER_HASH_STYLE=gnu
5291 LINKER_HASH_STYLE=both
5294 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5297 [LINKER_HASH_STYLE=''])
5298 if test x"${LINKER_HASH_STYLE}" != x; then
5299 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5300 [The linker hash style])
5303 # Configure the subdirectories
5304 # AC_CONFIG_SUBDIRS($subdirs)
5306 # Create the Makefile
5307 # and configure language subdirectories
5308 AC_CONFIG_FILES($all_outputs)
5310 AC_CONFIG_COMMANDS([default],
5312 case ${CONFIG_HEADERS} in
5313 *auto-host.h:config.in*)
5316 # Make sure all the subdirs exist.
5317 for d in $subdirs doc build common c-family
5319 test -d $d || mkdir $d
5322 [subdirs='$subdirs'])