2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
5 # 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
7 #This file is part of GCC.
9 #GCC is free software; you can redistribute it and/or modify it under
10 #the terms of the GNU General Public License as published by the Free
11 #Software Foundation; either version 3, or (at your option) any later
14 #GCC is distributed in the hope that it will be useful, but WITHOUT
15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 #You should have received a copy of the GNU General Public License
20 #along with GCC; see the file COPYING3. If not see
21 #<http://www.gnu.org/licenses/>.
23 # --------------------------------
24 # Initialization and sanity checks
25 # --------------------------------
29 AC_CONFIG_SRCDIR(tree.c)
30 AC_CONFIG_HEADER(auto-host.h:config.in)
32 gcc_version=`cat $srcdir/BASE-VER`
34 # Determine the host, build, and target systems
39 # Determine the noncanonical target name, for directory use.
40 ACX_NONCANONICAL_TARGET
42 # Determine the target- and build-specific subdirectories
45 # Set program_transform_name
48 # Check for bogus environment variables.
49 # Test if LIBRARY_PATH contains the notation for the current directory
50 # since this would lead to problems installing/building glibc.
51 # LIBRARY_PATH contains the current directory if one of the following
53 # - one of the terminals (":" and ";") is the first or last sign
54 # - two terminals occur directly after each other
55 # - the path contains an element with a dot in it
56 AC_MSG_CHECKING(LIBRARY_PATH variable)
58 case ${LIBRARY_PATH} in
59 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
60 library_path_setting="contains current directory"
63 library_path_setting="ok"
67 AC_MSG_RESULT($library_path_setting)
68 if test "$library_path_setting" != "ok"; then
70 *** LIBRARY_PATH shouldn't contain the current directory when
71 *** building gcc. Please change the environment variable
72 *** and run configure again.])
75 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
76 # since this would lead to problems installing/building glibc.
77 # GCC_EXEC_PREFIX contains the current directory if one of the following
79 # - one of the terminals (":" and ";") is the first or last sign
80 # - two terminals occur directly after each other
81 # - the path contains an element with a dot in it
82 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
84 case ${GCC_EXEC_PREFIX} in
85 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
86 gcc_exec_prefix_setting="contains current directory"
89 gcc_exec_prefix_setting="ok"
93 AC_MSG_RESULT($gcc_exec_prefix_setting)
94 if test "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [AS_HELP_STRING([--with-local-prefix=DIR],
109 [specifies directory to put local include])],
110 [case "${withval}" in
111 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
113 *) local_prefix=$with_local_prefix ;;
116 # Default local prefix if it is empty
117 if test x$local_prefix = x; then
118 local_prefix=/usr/local
121 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
122 # passed in by the toplevel make and thus we'd get different behavior
123 # depending on where we built the sources.
125 # Specify the g++ header file directory
126 AC_ARG_WITH(gxx-include-dir,
127 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
128 [specifies directory to put g++ header files])],
129 [case "${withval}" in
130 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
132 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
135 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
136 if test x${gcc_gxx_include_dir} = x; then
137 if test x${enable_version_specific_runtime_libs} = xyes; then
138 gcc_gxx_include_dir='${libsubdir}/include/c++'
140 libstdcxx_incdir='include/c++/$(version)'
141 if test x$host != x$target; then
142 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
144 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
148 gcc_gxx_include_dir_add_sysroot=0
149 if test "${with_sysroot+set}" = set; then
150 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
151 if test "${gcc_gxx_without_sysroot}"; then
152 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
153 gcc_gxx_include_dir_add_sysroot=1
157 AC_ARG_WITH(cpp_install_dir,
158 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
159 [install the user visible C preprocessor in DIR
160 (relative to PREFIX) as well as PREFIX/bin])],
161 [if test x$withval = xyes; then
162 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
163 elif test x$withval != xno; then
164 cpp_install_dir=$withval
167 # We would like to our source tree to be readonly. However when releases or
168 # pre-releases are generated, the flex/bison generated files as well as the
169 # various formats of manuals need to be included along with the rest of the
170 # sources. Therefore we have --enable-generated-files-in-srcdir to do
173 AC_MSG_CHECKING([whether to place generated files in the source directory])
174 dnl generated-files-in-srcdir is disabled by default
175 AC_ARG_ENABLE(generated-files-in-srcdir,
176 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
177 [put copies of generated files in source dir
178 intended for creating source tarballs for users
179 without texinfo bison or flex])],
180 generated_files_in_srcdir=$enableval,
181 generated_files_in_srcdir=no)
183 AC_MSG_RESULT($generated_files_in_srcdir)
185 if test "$generated_files_in_srcdir" = "yes"; then
192 # -------------------
193 # Find default linker
194 # -------------------
198 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
199 gnu_ld_flag="$with_gnu_ld",
202 # With pre-defined ld
204 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
205 DEFAULT_LINKER="$with_ld")
206 if test x"${DEFAULT_LINKER+set}" = x"set"; then
207 if test ! -x "$DEFAULT_LINKER"; then
208 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
209 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
212 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
213 [Define to enable the use of a default linker.])
216 AC_MSG_CHECKING([whether a default linker was specified])
217 if test x"${DEFAULT_LINKER+set}" = x"set"; then
218 if test x"$gnu_ld_flag" = x"no"; then
219 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
221 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
227 # With demangler in GNU ld
228 AC_ARG_WITH(demangler-in-ld,
229 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
230 demangler_in_ld="$with_demangler_in_ld",
233 # ----------------------
234 # Find default assembler
235 # ----------------------
239 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
240 gas_flag="$with_gnu_as",
244 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
245 DEFAULT_ASSEMBLER="$with_as")
246 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
247 if test ! -x "$DEFAULT_ASSEMBLER"; then
248 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
249 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
252 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
253 [Define to enable the use of a default assembler.])
256 AC_MSG_CHECKING([whether a default assembler was specified])
257 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
258 if test x"$gas_flag" = x"no"; then
259 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
261 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
271 # If a non-executable a.out is present (e.g. created by GNU as above even if
272 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
273 # file, even when creating an executable, so an execution test fails.
274 # Remove possible default executable files to avoid this.
276 # FIXME: This really belongs into AC_PROG_CC and can be removed once
277 # Autoconf includes it.
278 rm -f a.out a.exe b.out
280 # Find the native compiler
284 ACX_PROG_GNAT([-I"$srcdir"/ada])
286 # autoconf is lame and doesn't give us any substitution variable for this.
287 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
288 NO_MINUS_C_MINUS_O=yes
290 OUTPUT_OPTION='-o $@'
292 AC_SUBST(NO_MINUS_C_MINUS_O)
293 AC_SUBST(OUTPUT_OPTION)
295 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
296 # optimizations to be activated explicitly by the toplevel.
299 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
303 # Determine PICFLAG for target gnatlib.
304 GCC_PICFLAG_FOR_TARGET
305 AC_SUBST(PICFLAG_FOR_TARGET)
307 # -------------------------
308 # Check C compiler features
309 # -------------------------
311 AC_USE_SYSTEM_EXTENSIONS
317 # sizeof(char) is 1 by definition.
318 AC_CHECK_SIZEOF(void *)
319 AC_CHECK_SIZEOF(short)
321 AC_CHECK_SIZEOF(long)
322 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
323 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
326 # ---------------------
327 # Warnings and checking
328 # ---------------------
330 # Check $CC warning features (if it's GCC).
331 # We want to use -pedantic, but we don't want warnings about
335 # * C++11 narrowing conversions in { }
336 # So, we only use -pedantic if we can disable those warnings.
338 ACX_PROG_CC_WARNING_OPTS(
339 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual])), [loose_warn])
340 ACX_PROG_CC_WARNING_OPTS(
341 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
343 ACX_PROG_CC_WARNING_OPTS(
344 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
345 ACX_PROG_CC_WARNING_OPTS(
346 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
347 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
348 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
349 [-Wno-overlength-strings])), [strict_warn])
350 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
352 # The above macros do nothing if the compiler is not GCC. However, the
353 # Makefile has more goo to add other flags, so these variables are used
354 # to enable warnings only for GCC.
357 if test "x$GCC" = "xyes"; then
358 warn_cflags='$(GCC_WARN_CFLAGS)'
359 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
361 AC_SUBST(warn_cflags)
362 AC_SUBST(warn_cxxflags)
364 # Disable exceptions and RTTI if building with g++
365 ACX_PROG_CC_WARNING_OPTS(
366 m4_quote(m4_do([-fno-exceptions -fno-rtti])), [noexception_flags])
368 # Enable expensive internal checks
370 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
374 AC_ARG_ENABLE(checking,
375 [AS_HELP_STRING([[--enable-checking[=LIST]]],
376 [enable expensive run-time checks. With LIST,
377 enable only specific categories of checks.
378 Categories are: yes,no,all,none,release.
379 Flags are: assert,df,fold,gc,gcac,gimple,misc,
380 rtlflag,rtl,runtime,tree,valgrind,types])],
381 [ac_checking_flags="${enableval}"],[
382 # Determine the default checks.
383 if test x$is_release = x ; then
384 ac_checking_flags=yes
386 ac_checking_flags=release
388 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
389 for check in release $ac_checking_flags
392 # these set all the flags to specific states
393 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
394 ac_fold_checking= ; ac_gc_checking=1 ;
395 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
396 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
397 ac_tree_checking=1 ; ac_valgrind_checking= ;
398 ac_types_checking=1 ;;
399 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
400 ac_fold_checking= ; ac_gc_checking= ;
401 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
402 ac_rtlflag_checking= ; ac_runtime_checking= ;
403 ac_tree_checking= ; ac_valgrind_checking= ;
404 ac_types_checking= ;;
405 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
406 ac_fold_checking=1 ; ac_gc_checking=1 ;
407 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
408 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
409 ac_tree_checking=1 ; ac_valgrind_checking= ;
410 ac_types_checking=1 ;;
411 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
412 ac_fold_checking= ; ac_gc_checking= ;
413 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
414 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
415 ac_tree_checking= ; ac_valgrind_checking= ;
416 ac_types_checking= ;;
417 # these enable particular checks
418 assert) ac_assert_checking=1 ;;
419 df) ac_df_checking=1 ;;
420 fold) ac_fold_checking=1 ;;
421 gc) ac_gc_checking=1 ;;
422 gcac) ac_gc_always_collect=1 ;;
423 gimple) ac_gimple_checking=1 ;;
424 misc) ac_checking=1 ;;
425 rtl) ac_rtl_checking=1 ;;
426 rtlflag) ac_rtlflag_checking=1 ;;
427 runtime) ac_runtime_checking=1 ;;
428 tree) ac_tree_checking=1 ;;
429 types) ac_types_checking=1 ;;
430 valgrind) ac_valgrind_checking=1 ;;
431 *) AC_MSG_ERROR(unknown check category $check) ;;
437 if test x$ac_checking != x ; then
438 AC_DEFINE(ENABLE_CHECKING, 1,
439 [Define if you want more run-time sanity checks. This one gets a grab
440 bag of miscellaneous but relatively cheap checks.])
441 nocommon_flag=-fno-common
443 AC_SUBST(nocommon_flag)
444 if test x$ac_df_checking != x ; then
445 AC_DEFINE(ENABLE_DF_CHECKING, 1,
446 [Define if you want more run-time sanity checks for dataflow.])
448 if test x$ac_assert_checking != x ; then
449 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
450 [Define if you want assertions enabled. This is a cheap check.])
452 if test x$ac_gimple_checking != x ; then
453 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
454 [Define if you want operations on GIMPLE (the basic data structure of
455 the high-level optimizers) to be checked for dynamic type safety at
456 runtime. This is moderately expensive.])
458 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
459 if test x$ac_runtime_checking != x ; then
460 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
461 [Define if you want runtime assertions enabled. This is a cheap check.])
463 if test x$ac_tree_checking != x ; then
464 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
465 [Define if you want all operations on trees (the basic data
466 structure of the front ends) to be checked for dynamic type safety
467 at runtime. This is moderately expensive. The tree browser debugging
468 routines will also be enabled by this option.
470 TREEBROWSER=tree-browser.o
472 if test x$ac_types_checking != x ; then
473 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
474 [Define if you want all gimple types to be verified after gimplifiation.
478 AC_SUBST(TREEBROWSER)
479 if test x$ac_rtl_checking != x ; then
480 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
481 [Define if you want all operations on RTL (the basic data structure
482 of the optimizer and back end) to be checked for dynamic type safety
483 at runtime. This is quite expensive.])
485 if test x$ac_rtlflag_checking != x ; then
486 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
487 [Define if you want RTL flag accesses to be checked against the RTL
488 codes that are supported for each access macro. This is relatively
491 if test x$ac_gc_checking != x ; then
492 AC_DEFINE(ENABLE_GC_CHECKING, 1,
493 [Define if you want the garbage collector to do object poisoning and
494 other memory allocation checks. This is quite expensive.])
496 if test x$ac_gc_always_collect != x ; then
497 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
498 [Define if you want the garbage collector to operate in maximally
499 paranoid mode, validating the entire heap and collecting garbage at
500 every opportunity. This is extremely expensive.])
502 if test x$ac_fold_checking != x ; then
503 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
504 [Define if you want fold checked that it never destructs its argument.
505 This is quite expensive.])
507 valgrind_path_defines=
510 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
511 dnl # an if statement. This was the source of very frustrating bugs
512 dnl # in converting to autoconf 2.5x!
513 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
515 if test x$ac_valgrind_checking != x ; then
516 # It is certainly possible that there's valgrind but no valgrind.h.
517 # GCC relies on making annotations so we must have both.
518 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
519 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
520 [[#include <valgrind/memcheck.h>
521 #ifndef VALGRIND_DISCARD
522 #error VALGRIND_DISCARD not defined
524 [gcc_cv_header_valgrind_memcheck_h=yes],
525 [gcc_cv_header_valgrind_memcheck_h=no])
526 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
527 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
528 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
529 [[#include <memcheck.h>
530 #ifndef VALGRIND_DISCARD
531 #error VALGRIND_DISCARD not defined
533 [gcc_cv_header_memcheck_h=yes],
534 [gcc_cv_header_memcheck_h=no])
535 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
536 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
537 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
538 if test "x$valgrind_path" = "x" \
539 || (test $have_valgrind_h = no \
540 && test $gcc_cv_header_memcheck_h = no \
541 && test $gcc_cv_header_valgrind_memcheck_h = no); then
542 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
544 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
545 valgrind_command="$valgrind_path -q"
546 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
547 [Define if you want to run subprograms and generated programs
548 through valgrind (a memory checker). This is extremely expensive.])
549 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
550 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
551 [Define if valgrind's valgrind/memcheck.h header is installed.])
553 if test $gcc_cv_header_memcheck_h = yes; then
554 AC_DEFINE(HAVE_MEMCHECK_H, 1,
555 [Define if valgrind's memcheck.h header is installed.])
558 AC_SUBST(valgrind_path_defines)
559 AC_SUBST(valgrind_command)
561 # Enable code coverage collection
562 AC_ARG_ENABLE(coverage,
563 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
564 [enable compiler's code coverage collection.
565 Use to measure compiler performance and locate
566 unused parts of the compiler. With LEVEL, specify
567 optimization. Values are opt, noopt,
569 [case "${enableval}" in
571 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
574 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
577 # a.k.a. --disable-coverage
581 AC_MSG_ERROR(unknown coverage setting $enableval)
585 AC_SUBST(coverage_flags)
587 AC_ARG_ENABLE(gather-detailed-mem-stats,
588 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
589 [enable detailed memory allocation stats gathering])], [],
590 [enable_gather_detailed_mem_stats=no])
591 if test x$enable_gather_detailed_mem_stats = xyes ; then
592 AC_DEFINE(GATHER_STATISTICS, 1,
593 [Define to enable detailed memory allocation stats gathering.])
596 # -------------------------------
597 # Miscenalleous configure options
598 # -------------------------------
600 # See if we are building gcc with C++.
601 AC_ARG_ENABLE(build-with-cxx,
602 [AS_HELP_STRING([--enable-build-with-cxx],
603 [build with C++ compiler instead of C compiler])],
604 ENABLE_BUILD_WITH_CXX=$enableval,
605 ENABLE_BUILD_WITH_CXX=no)
606 AC_SUBST(ENABLE_BUILD_WITH_CXX)
607 if test "$ENABLE_BUILD_WITH_CXX" = "yes"; then
608 AC_DEFINE(ENABLE_BUILD_WITH_CXX, 1,
609 [Define if building with C++.])
614 [AS_HELP_STRING([--with-stabs],
615 [arrange to use stabs instead of host debug format])],
619 # Determine whether or not multilibs are enabled.
620 AC_ARG_ENABLE(multilib,
621 [AS_HELP_STRING([--enable-multilib],
622 [enable library support for multiple ABIs])],
623 [], [enable_multilib=yes])
624 AC_SUBST(enable_multilib)
626 # Determine whether or not multiarch is enabled.
627 AC_ARG_ENABLE(multiarch,
628 [AS_HELP_STRING([--enable-multiarch],
629 [enable support for multiarch paths])],
630 [case "${enableval}" in
631 yes|no|auto) enable_multiarch=$enableval;;
632 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
633 esac], [enable_multiarch=auto])
634 if test x${enable_multiarch} = xauto; then
635 if test x${with_native_system_header_dir} != x; then
636 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
639 if test x$host != x$target && test "x$with_sysroot" = x; then
640 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
644 AC_MSG_CHECKING(for multiarch configuration)
645 AC_SUBST(enable_multiarch)
646 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
648 # needed for setting the multiarch name for soft-float/hard-float ABIs
652 # Enable __cxa_atexit for C++.
653 AC_ARG_ENABLE(__cxa_atexit,
654 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
657 # Enable C extension for decimal float if target supports it.
658 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
660 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
661 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
662 [Define to 1 to enable decimal float extension to C.])
664 # Use default_decimal_float for dependency.
665 enable_decimal_float=$default_decimal_float
667 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
668 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
669 [Define to 1 to specify that we are using the BID decimal floating
670 point format instead of DPD])
672 # Enable C extension for fixed-point arithmetic.
673 AC_ARG_ENABLE(fixed-point,
674 [AS_HELP_STRING([--enable-fixed-point],
675 [enable fixed-point arithmetic extension to C])],
680 enable_fixed_point=yes
686 AC_MSG_WARN([fixed-point is not supported on IRIX, ignored])
687 enable_fixed_point=no
690 enable_fixed_point=yes
695 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
696 enable_fixed_point=no
700 AC_SUBST(enable_fixed_point)
702 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
703 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
704 [Define to 1 to enable fixed-point arithmetic extension to C.])
707 # Pass with no value to take the default
708 # Pass with a value to specify a thread package
709 AC_ARG_ENABLE(threads,
710 [AS_HELP_STRING([[--enable-threads[=LIB]]],
711 [enable thread usage for target GCC,
712 using LIB thread package])],,
716 [AS_HELP_STRING([--enable-tls],
717 [enable or disable generation of tls code
718 overriding the assembler check for tls support])],
722 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
723 Valid choices are 'yes' and 'no'.]) ;;
727 AC_ARG_ENABLE(objc-gc,
728 [AS_HELP_STRING([--enable-objc-gc],
729 [enable the use of Boehm's garbage collector with
730 the GNU Objective-C runtime])],
731 if test x$enable_objc_gc = xno; then
739 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
740 dwarf2="$with_dwarf2",
743 AC_ARG_ENABLE(shared,
744 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
746 case $enable_shared in
750 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
751 for pkg in $enableval; do
752 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
759 ], [enable_shared=yes])
760 AC_SUBST(enable_shared)
762 AC_ARG_WITH([native-system-header-dir],
763 [ --with-native-system-header-dir=dir
764 use dir as the directory to look for standard
765 system header files in. Defaults to /usr/include.],
767 case ${with_native_system_header_dir} in
768 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
769 /* | [[A-Za-z]]:[[\\/]]*) ;;
770 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
772 configured_native_system_header_dir="${withval}"
773 ], [configured_native_system_header_dir=])
775 AC_ARG_WITH(build-sysroot,
776 [AS_HELP_STRING([--with-build-sysroot=sysroot],
777 [use sysroot as the system root during the build])],
778 [if test x"$withval" != x ; then
779 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
781 [SYSROOT_CFLAGS_FOR_TARGET=])
782 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
785 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
786 [search for usr/lib, usr/include, et al, within DIR])],
788 case ${with_sysroot} in
789 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
790 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
793 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
794 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
796 if test "x$prefix" = xNONE; then
797 test_prefix=/usr/local
801 if test "x$exec_prefix" = xNONE; then
802 test_exec_prefix=$test_prefix
804 test_exec_prefix=$exec_prefix
806 case ${TARGET_SYSTEM_ROOT} in
807 "${test_prefix}"|"${test_prefix}/"*|\
808 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
809 '${prefix}'|'${prefix}/'*|\
810 '${exec_prefix}'|'${exec_prefix}/'*)
811 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
812 TARGET_SYSTEM_ROOT_DEFINE="$t"
817 TARGET_SYSTEM_ROOT_DEFINE=
818 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
820 AC_SUBST(TARGET_SYSTEM_ROOT)
821 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
822 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
825 [AS_HELP_STRING([--with-specs=SPECS],
826 [add SPECS to driver command-line processing])],
827 [CONFIGURE_SPECS=$withval],
830 AC_SUBST(CONFIGURE_SPECS)
832 ACX_PKGVERSION([GCC])
833 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
835 # Sanity check enable_languages in case someone does not run the toplevel
836 # configure # script.
837 AC_ARG_ENABLE(languages,
838 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
839 [case ,${enable_languages}, in
841 # go safe -- we cannot be much sure without the toplevel
843 # analysis of which target libs are present and usable
847 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
852 enable_languages=c,${enable_languages}
855 [enable_languages=c])
857 AC_ARG_WITH(multilib-list,
858 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
860 with_multilib_list=default)
862 # -------------------------
863 # Checks for other programs
864 # -------------------------
868 # Find some useful tools
870 # We need awk to create options.c and options.h.
871 # Bail out if it's missing.
873 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
880 AC_SUBST(ranlib_flags)
884 # See if cmp has --ignore-initial.
885 gcc_AC_PROG_CMP_IGNORE_INITIAL
887 # See if we have the mktemp command.
888 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
890 # See if makeinfo has been installed and is modern enough
891 # that we can use it.
892 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
893 [GNU texinfo.* \([0-9][0-9.]*\)],
894 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
895 if test $gcc_cv_prog_makeinfo_modern = no; then
897 *** Makeinfo is missing or too old.
898 *** Info documentation will not be built.])
905 # Is pod2man recent enough to regenerate manpages?
906 AC_MSG_CHECKING([for recent Pod::Man])
907 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
909 GENERATED_MANPAGES=generated-manpages
914 AC_SUBST(GENERATED_MANPAGES)
916 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
919 dnl Don't use AC_PROG_LEX; we insist on flex.
920 dnl LEXLIB is not useful in gcc.
921 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
924 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
926 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
927 # check for build == host before using them.
930 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
931 && test -d ../binutils ; then
932 NM='${objdir}/../binutils/nm-new'
934 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
938 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
939 && test -d ../binutils ; then
940 AR='${objdir}/../binutils/ar'
942 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
946 # --------------------
947 # Checks for C headers
948 # --------------------
950 # Need to reject headers which give warnings, so that the -Werror bootstrap
951 # works later. *sigh* This needs to come before all header checks.
958 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
959 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
960 sys/resource.h sys/param.h sys/times.h sys/stat.h \
961 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
963 # Check for thread headers.
964 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
965 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
967 # These tests can't be done till we know if we have limits.h.
971 # ----------------------
972 # Checks for C++ headers
973 # ----------------------
975 dnl Autoconf will give an error in the configure script if there is no
976 dnl C++ preprocessor. Hack to prevent that.
977 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
979 m4_popdef([AC_MSG_ERROR])[]dnl
983 AC_CHECK_HEADERS(unordered_map)
984 AC_CHECK_HEADERS(tr1/unordered_map)
985 AC_CHECK_HEADERS(ext/hash_map)
994 # These libraries may be used by collect2.
995 # We may need a special search path to get them linked.
996 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
998 for libs in '' -lld -lmld \
999 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1000 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1003 AC_TRY_LINK_FUNC(ldopen,
1004 [gcc_cv_collect2_libs="$libs"; break])
1007 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1008 case $gcc_cv_collect2_libs in
1010 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1012 AC_SUBST(COLLECT2_LIBS)
1014 # When building Ada code on Alpha, we need exc_resume which is usually in
1015 # -lexc. So test for it.
1018 AC_SEARCH_LIBS(exc_resume, exc)
1021 AC_SUBST(GNAT_LIBEXC)
1023 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1026 AC_SEARCH_LIBS(kstat_open, kstat)
1027 EXTRA_GCC_LIBS="$LIBS"
1029 AC_SUBST(EXTRA_GCC_LIBS)
1031 # Some systems put ldexp and frexp in libm instead of libc; assume
1032 # they're both in the same place. jcf-dump needs them.
1035 AC_SEARCH_LIBS(ldexp, m)
1040 # Use <inttypes.h> only if it exists,
1041 # doesn't clash with <sys/types.h>, and declares intmax_t.
1042 AC_MSG_CHECKING(for inttypes.h)
1043 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1044 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1045 [[#include <sys/types.h>
1046 #include <inttypes.h>]],
1047 [[intmax_t i = -1;]])],
1048 [gcc_cv_header_inttypes_h=yes],
1049 [gcc_cv_header_inttypes_h=no])])
1050 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1051 if test $gcc_cv_header_inttypes_h = yes; then
1052 AC_DEFINE(HAVE_INTTYPES_H, 1,
1053 [Define if you have a working <inttypes.h> header file.])
1056 dnl Disabled until we have a complete test for buggy enum bitfields.
1057 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1059 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1060 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1061 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1062 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1063 putchar_unlocked putc_unlocked)
1064 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1065 sysconf strsignal getrusage nl_langinfo \
1066 gettimeofday mbstowcs wcswidth mmap setlocale \
1067 gcc_UNLOCKED_FUNCS madvise)
1069 if test x$ac_cv_func_mbstowcs = xyes; then
1070 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1071 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1077 [gcc_cv_func_mbstowcs_works=yes],
1078 [gcc_cv_func_mbstowcs_works=no],
1079 [gcc_cv_func_mbstowcs_works=yes])])
1080 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1081 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1082 [Define this macro if mbstowcs does not crash when its
1083 first argument is NULL.])
1087 AC_CHECK_TYPE(ssize_t, int)
1088 AC_CHECK_TYPE(caddr_t, char *)
1090 gcc_AC_FUNC_MMAP_BLACKLIST
1094 # Under VMS, vfork works very differently than on Unix. The standard test
1095 # won't work, and it isn't easily adaptable. It makes more sense to
1097 ac_cv_func_vfork_works=yes
1102 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1103 # iconv() prototype.
1104 AS_IF([test "$ENABLE_BUILD_WITH_CXX" = "yes"],
1105 [AC_LANG_PUSH([C++])
1107 AC_LANG_POP([C++])],
1110 # Until we have in-tree GNU iconv:
1112 AC_SUBST(LIBICONV_DEP)
1118 # We will need to find libiberty.h and ansidecl.h
1119 saved_CFLAGS="$CFLAGS"
1120 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1121 saved_CXXFLAGS="$CXXFLAGS"
1122 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include"
1123 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1124 strsignal strstr stpcpy strverscmp \
1125 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1126 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1127 #include "ansidecl.h"
1128 #include "system.h"])
1130 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1131 #include "ansidecl.h"
1133 #ifdef HAVE_SYS_RESOURCE_H
1134 #include <sys/resource.h>
1138 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1139 #include "ansidecl.h"
1141 #ifdef HAVE_SYS_RESOURCE_H
1142 #include <sys/resource.h>
1144 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1145 [Define to `long' if <sys/resource.h> doesn't define.])])
1147 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1148 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1149 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1150 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1151 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1152 #include "ansidecl.h"
1161 gcc_AC_CHECK_DECLS(times, , ,[
1162 #include "ansidecl.h"
1164 #ifdef HAVE_SYS_TIMES_H
1165 #include <sys/times.h>
1169 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1170 #include "ansidecl.h"
1175 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1177 AS_IF([test "$ENABLE_BUILD_WITH_CXX" = "yes"],
1178 [AC_LANG_PUSH([C++])
1179 gcc_AC_CHECK_DECLS(madvise, , ,[
1180 #include "ansidecl.h"
1183 AC_LANG_POP([C++])],
1184 [gcc_AC_CHECK_DECLS(madvise, , ,[
1185 #include "ansidecl.h"
1190 # More time-related stuff.
1191 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1192 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1193 #include "ansidecl.h"
1195 #ifdef HAVE_SYS_TIMES_H
1196 #include <sys/times.h>
1198 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1199 if test $ac_cv_struct_tms = yes; then
1200 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1201 [Define if <sys/times.h> defines struct tms.])
1204 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1205 # revisit after autoconf 2.50.
1206 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1207 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1208 #include "ansidecl.h"
1210 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1211 if test $gcc_cv_type_clock_t = yes; then
1212 AC_DEFINE(HAVE_CLOCK_T, 1,
1213 [Define if <time.h> defines clock_t.])
1216 # Check if F_SETLKW is supported by fcntl.
1217 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1218 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1219 #include <fcntl.h>]], [[
1225 return fcntl (1, F_SETLKW, &fl);]])],
1226 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1227 if test $ac_cv_f_setlkw = yes; then
1228 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1229 [Define if F_SETLKW supported by fcntl.])
1232 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1233 CFLAGS="$saved_CFLAGS"
1234 CXXFLAGS="$saved_CXXFLAGS"
1236 # mkdir takes a single argument on some systems.
1237 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1245 # With Setjmp/Longjmp based exception handling.
1246 AC_ARG_ENABLE(sjlj-exceptions,
1247 [AS_HELP_STRING([--enable-sjlj-exceptions],
1248 [arrange to use setjmp/longjmp exception handling])],
1251 if test $enableval != yes; then
1252 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1257 force_sjlj_exceptions=yes],
1260 force_sjlj_exceptions=yes
1264 force_sjlj_exceptions=no
1267 if test $force_sjlj_exceptions = yes; then
1268 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1269 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1270 [Define 0/1 to force the choice for exception handling model.])
1273 # --------------------------------------------------------
1274 # Build, host, and target specific configuration fragments
1275 # --------------------------------------------------------
1277 # Collect build-machine-specific information.
1278 . ${srcdir}/config.build
1280 # Collect host-machine-specific information.
1281 . ${srcdir}/config.host
1285 # Collect target-machine-specific information.
1286 . ${srcdir}/config.gcc
1288 extra_objs="${host_extra_objs} ${extra_objs}"
1289 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1291 # Default the target-machine variables that were not explicitly set.
1292 if test x"$tm_file" = x
1293 then tm_file=$cpu_type/$cpu_type.h; fi
1295 if test x"$extra_headers" = x
1296 then extra_headers=; fi
1298 if test x$md_file = x
1299 then md_file=$cpu_type/$cpu_type.md; fi
1301 if test x$out_file = x
1302 then out_file=$cpu_type/$cpu_type.c; fi
1304 if test x"$tmake_file" = x
1305 then tmake_file=$cpu_type/t-$cpu_type
1308 # Support --enable-initfini-array.
1309 if test x$enable_initfini_array != xno; then
1310 tm_file="${tm_file} initfini-array.h"
1313 if test x"$dwarf2" = xyes
1314 then tm_file="$tm_file tm-dwarf2.h"
1317 # Say what files are being used for the output code and MD file.
1318 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1319 echo "Using \`$srcdir/config/$md_file' as machine description file."
1321 # If any of the xm_file variables contain nonexistent files, warn
1322 # about them and drop them.
1325 for x in $build_xm_file; do
1326 if test -f $srcdir/config/$x
1328 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1334 for x in $host_xm_file; do
1335 if test -f $srcdir/config/$x
1337 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1343 for x in $xm_file; do
1344 if test -f $srcdir/config/$x
1346 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1352 for f in $tm_file; do
1355 if test $count = ax; then
1356 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1358 echo "Using the following target machine macro files:"
1359 for f in $tm_file; do
1360 echo " $srcdir/config/$f"
1364 if test x$need_64bit_hwint = xyes; then
1365 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1366 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1369 if test x$use_long_long_for_widest_fast_int = xyes; then
1370 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1371 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1372 efficiently supported by the host hardware.])
1375 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1376 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1378 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1379 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1382 for f in $host_xm_file; do
1385 if test $count = a; then
1387 elif test $count = ax; then
1388 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1390 echo "Using the following host machine macro files:"
1391 for f in $host_xm_file; do
1392 echo " $srcdir/config/$f"
1395 echo "Using ${out_host_hook_obj} for host machine hooks."
1397 if test "$host_xm_file" != "$build_xm_file"; then
1399 for f in $build_xm_file; do
1402 if test $count = a; then
1404 elif test $count = ax; then
1405 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1407 echo "Using the following build machine macro files:"
1408 for f in $build_xm_file; do
1409 echo " $srcdir/config/$f"
1414 if test -n "$configured_native_system_header_dir"; then
1415 native_system_header_dir=$configured_native_system_header_dir
1417 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1418 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1422 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1423 gcc_cv_mcontext_underscores,
1425 #include <sys/cdefs.h>
1426 #include <sys/signal.h>
1427 #include <ucontext.h>
1428 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1430 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1431 if test $gcc_cv_mcontext_underscores = yes; then
1432 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1433 [mcontext_t fields start with __])
1442 # Check if a valid thread package
1443 case ${enable_threads} in
1446 target_thread_file='single'
1450 target_thread_file='single'
1452 aix | dce | lynx | mipssde | posix | rtems | \
1453 single | tpf | vxworks | win32)
1454 target_thread_file=${enable_threads}
1457 echo "${enable_threads} is an unknown thread package" 1>&2
1462 if test x${thread_file} = x; then
1463 # No thread file set by target-specific clauses in config.gcc,
1464 # so use file chosen by default logic above
1465 thread_file=${target_thread_file}
1473 if test x$enable___cxa_atexit = xyes || \
1474 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1475 if test x$host = x$target; then
1477 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1478 # keyed to flag_use_cxa_atexit
1483 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1484 [echo "__cxa_atexit can't be enabled on this target"])
1488 # We can't check for __cxa_atexit when building a cross, so assume
1492 if test x$use_cxa_atexit = xyes; then
1493 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1494 [Define if you want to use __cxa_atexit, rather than atexit, to
1495 register C++ destructors for local statics and global objects.
1496 This is essential for fully standards-compliant handling of
1497 destructors, but requires __cxa_atexit in libc.])
1501 # Look for a file containing extra machine modes.
1502 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1503 extra_modes_file='$(srcdir)'/config/${extra_modes}
1504 AC_SUBST(extra_modes_file)
1505 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1506 [Define to the name of a file containing a list of extra machine modes
1507 for this architecture.])
1510 # Convert extra_options into a form suitable for Makefile use.
1513 for f in $extra_options; do
1514 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1515 all_opt_files="$all_opt_files $srcdir/config/$f"
1517 AC_SUBST(extra_opt_files)
1519 # auto-host.h is the file containing items generated by autoconf and is
1520 # the first file included by config.h.
1521 # If host=build, it is correct to have bconfig include auto-host.h
1522 # as well. If host!=build, we are in error and need to do more
1523 # work to find out the build config parameters.
1524 if test x$host = x$build
1526 build_auto=auto-host.h
1528 # We create a subdir, then run autoconf in the subdir.
1529 # To prevent recursion we set host and build for the new
1530 # invocation of configure to the build for this invocation
1537 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1538 *) realsrcdir=../${srcdir};;
1540 saved_CFLAGS="${CFLAGS}"
1541 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1542 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1543 ${realsrcdir}/configure \
1544 --enable-languages=${enable_languages-all} \
1545 --target=$target_alias --host=$build_alias --build=$build_alias
1546 CFLAGS="${saved_CFLAGS}"
1548 # We just finished tests for the build machine, so rename
1549 # the file auto-build.h in the gcc directory.
1550 mv auto-host.h ../auto-build.h
1553 build_auto=auto-build.h
1555 AC_SUBST(build_subdir)
1557 tm_file="${tm_file} defaults.h"
1558 tm_p_file="${tm_p_file} tm-preds.h"
1559 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1560 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1561 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1562 # put this back in temporarily.
1563 xm_file="auto-host.h ansidecl.h ${xm_file}"
1570 # Compile in configure arguments.
1571 if test -f configargs.h ; then
1572 # Being re-configured.
1573 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1574 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1576 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1579 # Double all backslashes and backslash all quotes to turn
1580 # gcc_config_arguments into a C string.
1581 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1582 $gcc_config_arguments
1584 gcc_config_arguments_str=`cat conftest.out`
1587 cat > configargs.h <<EOF
1588 /* Generated automatically. */
1589 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1590 static const char thread_model[] = "$thread_file";
1592 static const struct {
1593 const char *name, *value;
1594 } configure_default_options[] = $configure_default_options;
1599 gcc_BASEVER=`cat $srcdir/BASE-VER`
1600 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1601 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1602 if test -f $srcdir/REVISION ; then
1603 gcc_REVISION=`cat $srcdir/REVISION`
1607 cat > plugin-version.h <<EOF
1608 #include "configargs.h"
1610 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1611 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1612 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1613 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1615 static char basever[] = "$gcc_BASEVER";
1616 static char datestamp[] = "$gcc_DATESTAMP";
1617 static char devphase[] = "$gcc_DEVPHASE";
1618 static char revision[] = "$gcc_REVISION";
1620 /* FIXME plugins: We should make the version information more precise.
1621 One way to do is to add a checksum. */
1623 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1625 configuration_arguments};
1629 # Internationalization
1630 ZW_GNU_GETTEXT_SISTER_DIR
1632 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1633 # -liconv on the link line twice.
1634 case "$LIBINTL" in *$LIBICONV*)
1638 AC_ARG_ENABLE(secureplt,
1639 [AS_HELP_STRING([--enable-secureplt],
1640 [enable -msecure-plt by default for PowerPC])],
1643 AC_ARG_ENABLE(leading-mingw64-underscores,
1644 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1645 [enable leading underscores on 64 bit mingw targets]),
1647 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1648 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1649 [Define if we should use leading underscore on 64 bit mingw targets])])
1652 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1655 AC_ARG_ENABLE(frame-pointer,
1656 [AS_HELP_STRING([--enable-frame-pointer],
1657 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1660 linux* | darwin[[8912]]*)
1661 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1663 enable_frame_pointer=no
1666 enable_frame_pointer=yes
1671 # Windows32 Registry support for specifying GCC installation paths.
1672 AC_ARG_ENABLE(win32-registry,
1673 [AS_HELP_STRING([--disable-win32-registry],
1674 [disable lookup of installation paths in the
1675 Registry on Windows hosts])
1676 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1677 AS_HELP_STRING([--enable-win32-registry=KEY],
1678 [use KEY instead of GCC version as the last portion
1679 of the registry key])],,)
1682 win32 | pe | cygwin* | mingw32* | uwin*)
1683 if test "x$enable_win32_registry" != xno; then
1684 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1687 if test "x$enable_win32_registry" != xno; then
1688 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1689 [Define to 1 if installation paths should be looked up in the Windows
1690 Registry. Ignored on non-Windows hosts.])
1692 if test "x$enable_win32_registry" != xyes \
1693 && test "x$enable_win32_registry" != x; then
1694 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1695 [Define to be the last component of the Windows registry key under which
1696 to look for installation paths. The full key used will be
1697 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1698 The default is the GCC version number.])
1704 # Get an absolute path to the GCC top-level source directory
1705 holddir=`${PWDCMD-pwd}`
1707 topdir=`${PWDCMD-pwd}`
1710 # Conditionalize the makefile for this host machine.
1712 for f in ${host_xmake_file}
1714 if test -f ${srcdir}/config/$f
1716 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1720 # Conditionalize the makefile for this target machine.
1722 for f in ${tmake_file}
1724 if test -f ${srcdir}/config/$f
1726 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1729 tmake_file="${tmake_file_}"
1731 out_object_file=`basename $out_file .c`.o
1732 common_out_object_file=`basename $common_out_file .c`.o
1734 tm_file_list="options.h"
1735 tm_include_list="options.h insn-constants.h"
1736 for f in $tm_file; do
1739 f=`echo $f | sed 's/^..//'`
1740 tm_file_list="${tm_file_list} $f"
1741 tm_include_list="${tm_include_list} $f"
1744 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1745 tm_include_list="${tm_include_list} $f"
1748 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1749 tm_include_list="${tm_include_list} config/$f"
1756 for f in $tm_p_file; do
1759 tm_p_file_list="${tm_p_file_list} $f"
1760 tm_p_include_list="${tm_p_include_list} $f"
1763 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1764 tm_p_include_list="${tm_p_include_list} config/$f"
1770 for f in $xm_file; do
1773 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1774 xm_include_list="${xm_include_list} $f"
1777 xm_file_list="${xm_file_list} $f"
1778 xm_include_list="${xm_include_list} $f"
1781 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1782 xm_include_list="${xm_include_list} config/$f"
1788 host_xm_include_list=
1789 for f in $host_xm_file; do
1792 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1793 host_xm_include_list="${host_xm_include_list} $f"
1796 host_xm_file_list="${host_xm_file_list} $f"
1797 host_xm_include_list="${host_xm_include_list} $f"
1800 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1801 host_xm_include_list="${host_xm_include_list} config/$f"
1807 for f in $build_xm_file; do
1810 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1811 build_xm_include_list="${build_xm_include_list} $f"
1813 auto-build.h | auto-host.h )
1814 build_xm_file_list="${build_xm_file_list} $f"
1815 build_xm_include_list="${build_xm_include_list} $f"
1818 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1819 build_xm_include_list="${build_xm_include_list} config/$f"
1824 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1825 # cross-compiler which does not use the native headers and libraries.
1826 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1827 CROSS= AC_SUBST(CROSS)
1828 ALL=all.internal AC_SUBST(ALL)
1829 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1831 if test "x$with_build_sysroot" != x; then
1832 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1834 # This value is used, even on a native system, because
1835 # CROSS_SYSTEM_HEADER_DIR is just
1836 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1837 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1840 if test x$host != x$target
1842 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1844 SYSTEM_HEADER_DIR=$build_system_header_dir
1845 case "$host","$target" in
1846 # Darwin crosses can use the host system's libraries and headers,
1847 # because of the fat library support. Of course, it must be the
1848 # same version of Darwin on both sides. Allow the user to
1849 # just say --target=foo-darwin without a version number to mean
1850 # "the version on this system".
1851 *-*-darwin*,*-*-darwin*)
1852 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1853 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1854 if test $hostos = $targetos -o $targetos = darwin ; then
1856 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1861 i?86-*-*,x86_64-*-* \
1862 | powerpc*-*-*,powerpc64*-*-*)
1863 CROSS="$CROSS -DNATIVE_CROSS" ;;
1868 if test "x$with_headers" = x; then
1875 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1876 SYSTEM_HEADER_DIR=$build_system_header_dir
1879 # If this is a cross-compiler that does not
1880 # have its own set of headers then define
1883 # If this is using newlib, without having the headers available now,
1884 # then define inhibit_libc in LIBGCC2_CFLAGS.
1885 # This prevents libgcc2 from containing any code which requires libc
1887 : ${inhibit_libc=false}
1888 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1889 test x$with_newlib = xyes ; } &&
1890 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1893 AC_SUBST(inhibit_libc)
1895 # When building gcc with a cross-compiler, we need to adjust things so
1896 # that the generator programs are still built with the native compiler.
1897 # Also, we cannot run fixincludes.
1899 # These are the normal (build=host) settings:
1900 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1901 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1902 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1903 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1905 # And these apply if build != host, or we are generating coverage data
1906 if test x$build != x$host || test "x$coverage_flags" != x
1908 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1909 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1912 # Expand extra_headers to include complete path.
1913 # This substitutes for lots of t-* files.
1915 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1916 for file in ${extra_headers} ; do
1917 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1920 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1921 if test x"$use_gcc_tgmath" = xyes
1922 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1925 # Define collect2 in Makefile.
1926 case $host_can_use_collect2 in
1928 *) collect2='collect2$(exeext)' ;;
1930 AC_SUBST([collect2])
1932 # Add a definition of USE_COLLECT2 if system wants one.
1933 case $use_collect2 in
1934 no) use_collect2= ;;
1937 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1938 xm_defines="${xm_defines} USE_COLLECT2"
1939 case $host_can_use_collect2 in
1941 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1947 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1948 [Define to the name of the LTO plugin DSO that must be
1949 passed to the linker's -plugin=LIB option.])
1951 # ---------------------------
1952 # Assembler & linker features
1953 # ---------------------------
1955 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1956 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1957 # However when ld-new is first executed from the build tree, libtool will
1958 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1959 # to the build tree. While doing this we need to use the previous-stage
1960 # linker, or we have an infinite loop. The presence of a shell script as
1961 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1962 # the gcc/collect-ld script. So we need to know how libtool works, or
1963 # exec-tool will fail.
1965 m4_defun([_LT_CONFIG_COMMANDS], [])
1968 AC_SUBST(enable_fast_install)
1970 # Identify the assembler which will work hand-in-glove with the newly
1971 # built GCC, so that we can examine its features. This is the assembler
1972 # which will be driven by the driver program.
1974 # If build != host, and we aren't building gas in-tree, we identify a
1975 # build->target assembler and hope that it will have the same features
1976 # as the host->target assembler we'll be using.
1977 gcc_cv_gas_major_version=
1978 gcc_cv_gas_minor_version=
1979 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1981 m4_pattern_allow([AS_FOR_TARGET])dnl
1982 AS_VAR_SET_IF(gcc_cv_as,, [
1983 if test -x "$DEFAULT_ASSEMBLER"; then
1984 gcc_cv_as="$DEFAULT_ASSEMBLER"
1985 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1986 && test -f ../gas/Makefile \
1987 && test x$build = x$host; then
1988 gcc_cv_as=../gas/as-new$build_exeext
1989 elif test -x as$build_exeext; then
1990 # Build using assembler in the current directory.
1991 gcc_cv_as=./as$build_exeext
1992 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1993 gcc_cv_as="$AS_FOR_TARGET"
1995 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1998 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1999 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2000 case "$ORIGINAL_AS_FOR_TARGET" in
2001 ./as | ./as$build_exeext) ;;
2002 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2005 AC_MSG_CHECKING(what assembler to use)
2006 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2007 # Single tree build which includes gas. We want to prefer it
2008 # over whatever linker top-level may have detected, since
2009 # we'll use what we're building after installation anyway.
2010 AC_MSG_RESULT(newly built gas)
2012 _gcc_COMPUTE_GAS_VERSION
2013 in_tree_gas_is_elf=no
2014 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2015 || (grep 'obj_format = multi' ../gas/Makefile \
2016 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2018 in_tree_gas_is_elf=yes
2021 AC_MSG_RESULT($gcc_cv_as)
2025 # Identify the linker which will work hand-in-glove with the newly
2026 # built GCC, so that we can examine its features. This is the linker
2027 # which will be driven by the driver program.
2029 # If build != host, and we aren't building gas in-tree, we identify a
2030 # build->target linker and hope that it will have the same features
2031 # as the host->target linker we'll be using.
2032 gcc_cv_gld_major_version=
2033 gcc_cv_gld_minor_version=
2034 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2035 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2037 AS_VAR_SET_IF(gcc_cv_ld,, [
2038 if test -x "$DEFAULT_LINKER"; then
2039 gcc_cv_ld="$DEFAULT_LINKER"
2040 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2041 && test -f ../ld/Makefile \
2042 && test x$build = x$host; then
2043 gcc_cv_ld=../ld/ld-new$build_exeext
2044 elif test -x collect-ld$build_exeext; then
2045 # Build using linker in the current directory.
2046 gcc_cv_ld=./collect-ld$build_exeext
2047 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2048 gcc_cv_ld="$LD_FOR_TARGET"
2050 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2053 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2054 PLUGIN_LD=`basename $gcc_cv_ld`
2055 AC_ARG_WITH(plugin-ld,
2056 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2057 [if test x"$withval" != x; then
2058 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2059 PLUGIN_LD="$withval"
2061 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2062 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
2064 # Check to see if we are using gold instead of ld
2065 AC_MSG_CHECKING(whether we are using gold)
2067 if test x$gcc_cv_ld != x; then
2068 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2069 | grep "GNU gold" > /dev/null; then
2073 AC_MSG_RESULT($ld_is_gold)
2075 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2076 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2077 case "$ORIGINAL_LD_FOR_TARGET" in
2078 ./collect-ld | ./collect-ld$build_exeext) ;;
2079 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2082 AC_MSG_CHECKING(what linker to use)
2083 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2084 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2085 # Single tree build which includes ld. We want to prefer it
2086 # over whatever linker top-level may have detected, since
2087 # we'll use what we're building after installation anyway.
2088 AC_MSG_RESULT(newly built ld)
2090 in_tree_ld_is_elf=no
2091 if (grep 'EMUL = .*elf' ../ld/Makefile \
2092 || grep 'EMUL = .*linux' ../ld/Makefile \
2093 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2094 in_tree_ld_is_elf=yes
2095 elif test "$ld_is_gold" = yes; then
2096 in_tree_ld_is_elf=yes
2098 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
2101 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
2102 if test x$gcc_cv_gld_version != x; then
2106 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2107 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2110 AC_MSG_RESULT($gcc_cv_ld)
2114 # Figure out what nm we will be using.
2115 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2116 AS_VAR_SET_IF(gcc_cv_nm,, [
2117 if test -f $gcc_cv_binutils_srcdir/configure.in \
2118 && test -f ../binutils/Makefile \
2119 && test x$build = x$host; then
2120 gcc_cv_nm=../binutils/nm-new$build_exeext
2121 elif test -x nm$build_exeext; then
2122 gcc_cv_nm=./nm$build_exeext
2123 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2124 gcc_cv_nm="$NM_FOR_TARGET"
2126 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2129 AC_MSG_CHECKING(what nm to use)
2130 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2131 # Single tree build which includes binutils.
2132 AC_MSG_RESULT(newly built nm)
2135 AC_MSG_RESULT($gcc_cv_nm)
2139 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2140 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2141 case "$ORIGINAL_NM_FOR_TARGET" in
2142 ./nm | ./nm$build_exeext) ;;
2143 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2147 # Figure out what objdump we will be using.
2148 AS_VAR_SET_IF(gcc_cv_objdump,, [
2149 if test -f $gcc_cv_binutils_srcdir/configure.in \
2150 && test -f ../binutils/Makefile \
2151 && test x$build = x$host; then
2152 # Single tree build which includes binutils.
2153 gcc_cv_objdump=../binutils/objdump$build_exeext
2154 elif test -x objdump$build_exeext; then
2155 gcc_cv_objdump=./objdump$build_exeext
2156 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2157 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2159 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2162 AC_MSG_CHECKING(what objdump to use)
2163 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2164 # Single tree build which includes binutils.
2165 AC_MSG_RESULT(newly built objdump)
2166 elif test x$gcc_cv_objdump = x; then
2167 AC_MSG_RESULT(not found)
2169 AC_MSG_RESULT($gcc_cv_objdump)
2172 # Figure out what readelf we will be using.
2173 AS_VAR_SET_IF(gcc_cv_readelf,, [
2174 if test -f $gcc_cv_binutils_srcdir/configure.in \
2175 && test -f ../binutils/Makefile \
2176 && test x$build = x$host; then
2177 # Single tree build which includes binutils.
2178 gcc_cv_readelf=../binutils/readelf$build_exeext
2179 elif test -x readelf$build_exeext; then
2180 gcc_cv_readelf=./readelf$build_exeext
2182 AC_PATH_PROG(gcc_cv_readelf, readelf)
2185 AC_MSG_CHECKING(what readelf to use)
2186 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2187 # Single tree build which includes binutils.
2188 AC_MSG_RESULT(newly built readelf)
2189 elif test x$gcc_cv_readelf = x; then
2190 AC_MSG_RESULT(not found)
2192 AC_MSG_RESULT($gcc_cv_readelf)
2195 # Figure out what assembler alignment features are present.
2196 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2200 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2201 [Define if your assembler supports .balign and .p2align.])])
2203 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2206 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2207 [Define if your assembler supports specifying the maximum number
2208 of bytes to skip when using the GAS .p2align command.])])
2210 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2213 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2214 [Define if your assembler supports .literal16.])])
2216 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2218 [conftest_label1: .word 0
2220 conftest_label2: .word 0
2222 [if test x$gcc_cv_nm != x; then
2223 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2224 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2225 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2227 else gcc_cv_as_subsection_m1=yes
2229 rm -f conftest.nm1 conftest.nm2
2231 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2232 [Define if your assembler supports .subsection and .subsection -1 starts
2233 emitting at the beginning of your section.])])
2235 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2238 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2240 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2242 [ .weakref foobar, barfnot],,
2243 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2245 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2248 .NSUBSPA $CODE$,COMDAT],,
2249 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2251 # .hidden needs to be supported in both the assembler and the linker,
2252 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2253 # This is irritatingly difficult to feature test for; we have to check the
2254 # date string after the version number. If we've got an in-tree
2255 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2257 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2258 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2262 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2263 # STV_HIDDEN, so disable .hidden support if so.
2265 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2266 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2267 cat > conftest.s <<EOF
2274 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2275 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2276 grep '\.hidden default' > /dev/null; then
2279 gcc_cv_as_hidden=yes
2282 # Assume bug is present if objdump is missing.
2287 gcc_cv_as_hidden=yes
2292 # Darwin as has some visibility support, though with a different syntax.
2293 gcc_cv_as_hidden=yes
2297 # gnu_indirect_function type is an extension proposed at
2298 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2299 # selection of function implementation
2300 AC_ARG_ENABLE(gnu-indirect-function,
2301 [AS_HELP_STRING([--enable-gnu-indirect-function],
2302 [enable the use of the @gnu_indirect_function to glibc systems])],
2303 [case $enable_gnu_indirect_function in
2305 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2306 Valid choices are 'yes' and 'no'.]) ;;
2308 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2309 if test x$enable_gnu_indirect_function = xyes; then
2310 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2311 [Define if your system supports gnu indirect functions.])
2315 if test $in_tree_ld != yes ; then
2316 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2317 if echo "$ld_ver" | grep GNU > /dev/null; then
2318 if test x"$ld_is_gold" = xyes; then
2319 # GNU gold --version looks like this:
2321 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2323 # We extract the binutils version which is more familiar and specific
2324 # than the gold version.
2325 ld_vers=`echo $ld_ver | sed -n \
2326 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2328 # GNU ld --version looks like this:
2330 # GNU ld (GNU Binutils) 2.21.51.20110225
2331 ld_vers=`echo $ld_ver | sed -n \
2332 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2334 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2335 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2336 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2337 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2341 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2344 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2345 # /usr/ccs/bin/ld has been configured.
2346 ld_ver=`$gcc_cv_ld -V 2>&1`
2347 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2348 ld_vers=`echo $ld_ver | sed -n \
2349 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2350 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2351 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2359 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2360 [[if test $in_tree_ld = yes ; then
2362 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2363 && test $in_tree_ld_is_elf = yes; then
2364 gcc_cv_ld_hidden=yes
2367 gcc_cv_ld_hidden=yes
2368 if test x"$ld_is_gold" = xyes; then
2370 elif echo "$ld_ver" | grep GNU > /dev/null; then
2371 if test 0"$ld_date" -lt 20020404; then
2372 if test -n "$ld_date"; then
2373 # If there was date string, but was earlier than 2002-04-04, fail
2375 elif test -z "$ld_vers"; then
2376 # If there was no date string nor ld version number, something is wrong
2379 test -z "$ld_vers_patch" && ld_vers_patch=0
2380 if test "$ld_vers_major" -lt 2; then
2382 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2383 gcc_cv_ld_hidden="no"
2384 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2392 # Darwin ld has some visibility support.
2393 gcc_cv_ld_hidden=yes
2395 hppa64*-*-hpux* | ia64*-*-hpux*)
2396 gcc_cv_ld_hidden=yes
2399 # .hidden support was backported to Solaris 8, starting with ld
2401 if test "$ld_vers_minor" -ge 276; then
2402 gcc_cv_ld_hidden=yes
2407 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2408 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2409 # .symbolic was only added in Solaris 9 12/02.
2410 gcc_cv_ld_hidden=yes
2418 libgcc_visibility=no
2419 AC_SUBST(libgcc_visibility)
2420 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2421 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2422 libgcc_visibility=yes
2423 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2424 [Define if your assembler and linker support .hidden.])
2427 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2428 gcc_cv_ld_ro_rw_mix=unknown
2429 if test $in_tree_ld = yes ; then
2430 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2431 && test $in_tree_ld_is_elf = yes; then
2432 gcc_cv_ld_ro_rw_mix=read-write
2434 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2435 echo '.section myfoosect, "a"' > conftest1.s
2436 echo '.section myfoosect, "aw"' > conftest2.s
2437 echo '.byte 1' >> conftest2.s
2438 echo '.section myfoosect, "a"' > conftest3.s
2439 echo '.byte 0' >> conftest3.s
2440 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2441 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2442 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2443 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2444 conftest2.o conftest3.o > /dev/null 2>&1; then
2445 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2446 | sed -e '/myfoosect/!d' -e N`
2447 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2448 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2449 gcc_cv_ld_ro_rw_mix=read-only
2451 gcc_cv_ld_ro_rw_mix=read-write
2456 rm -f conftest.* conftest[123].*
2459 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2460 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2461 [Define if your linker links a mix of read-only
2462 and read-write sections into a read-write section.])
2464 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2466 gcc_AC_INITFINI_ARRAY
2468 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2469 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2477 [[# GAS versions before 2.11 do not support uleb128,
2478 # despite appearing to.
2479 # ??? There exists an elf-specific test that will crash
2480 # the assembler. Perhaps it's better to figure out whether
2481 # arbitrary sections are supported and try the test.
2482 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2483 if echo "$as_ver" | grep GNU > /dev/null; then
2484 as_vers=`echo $as_ver | sed -n \
2485 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2486 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2487 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2488 if test $as_major -eq 2 && test $as_minor -lt 11
2490 else gcc_cv_as_leb128=yes
2493 [AC_DEFINE(HAVE_AS_LEB128, 1,
2494 [Define if your assembler supports .sleb128 and .uleb128.])])
2496 # Check if we have assembler support for unwind directives.
2497 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2504 .cfi_escape 1, 2, 3, 4, 5
2508 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2509 # read-only and read-write sections, we need to make sure that the
2510 # assembler used emits read-write .eh_frame sections.
2511 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2512 if test "x$gcc_cv_objdump" != x; then
2513 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2514 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2515 gcc_cv_as_cfi_directive=no
2518 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2519 # On Solaris/x86, make sure that GCC and gas agree on using
2520 # read-only .eh_frame sections for 64-bit.
2521 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2522 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2523 sed -e /.eh_frame/!d -e N | \
2524 grep READONLY > /dev/null; then
2525 gcc_cv_as_cfi_directive=yes
2527 gcc_cv_as_cfi_directive=no
2531 gcc_cv_as_cfi_directive=yes
2536 # no objdump, err on the side of caution
2537 gcc_cv_as_cfi_directive=no
2540 gcc_cv_as_cfi_directive=yes
2544 gcc_cv_as_cfi_directive=yes
2547 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2548 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2552 .cfi_adjust_cfa_offset 64
2554 .cfi_adjust_cfa_offset 128
2557 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2558 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2559 gcc_cv_as_cfi_advance_working=yes
2563 # no objdump, err on the side of caution
2564 gcc_cv_as_cfi_advance_working=no
2566 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2567 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2568 [`if test $gcc_cv_as_cfi_directive = yes \
2569 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2570 [Define 0/1 if your assembler supports CFI directives.])
2572 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2573 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2574 gcc_cv_as_cfi_personality_directive, ,,
2577 .cfi_personality 0, symbol
2579 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2580 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2581 then echo 1; else echo 0; fi`],
2582 [Define 0/1 if your assembler supports .cfi_personality.])
2584 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2585 gcc_cv_as_cfi_sections_directive, ,,
2587 .cfi_sections .debug_frame, .eh_frame
2591 win32 | pe | cygwin* | mingw32* | uwin*)
2592 # Need to check that we generated the correct relocation for the
2593 # .debug_frame section. This was fixed for binutils 2.21.
2594 gcc_cv_as_cfi_sections_directive=no
2595 if test "x$gcc_cv_objdump" != x; then
2596 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2597 grep secrel > /dev/null; then
2598 gcc_cv_as_cfi_sections_directive=yes
2603 gcc_cv_as_cfi_sections_directive=yes
2606 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2607 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2608 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2609 then echo 1; else echo 0; fi`],
2610 [Define 0/1 if your assembler supports .cfi_sections.])
2612 # GAS versions up to and including 2.11.0 may mis-optimize
2614 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2622 .section .eh_frame,"aw",@progbits
2624 .4byte .LECIE1-.LSCIE1
2638 .4byte .LEFDE1-.LASFDE1
2640 .4byte .LASFDE1-__FRAME_BEGIN__
2648 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2649 cat > conftest.lit <<EOF
2650 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2651 0010 01000000 12000000 18000000 00000000 ................
2652 0020 08000000 04080000 0044 .........D @&t@
2654 cat > conftest.big <<EOF
2655 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2656 0010 00000001 00000012 00000018 00000000 ................
2657 0020 00000008 04000000 0844 .........D @&t@
2659 # If the assembler didn't choke, and we can objdump,
2660 # and we got the correct data, then succeed.
2661 # The text in the here-document typically retains its unix-style line
2662 # endings, while the output of objdump will use host line endings.
2663 # Therefore, use diff -b for the comparisons.
2664 if test x$gcc_cv_objdump != x \
2665 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2666 | tail -3 > conftest.got \
2667 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2668 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2670 gcc_cv_as_eh_frame=yes
2671 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2672 gcc_cv_as_eh_frame=buggy
2674 # Uh oh, what do we do now?
2675 gcc_cv_as_eh_frame=no
2678 if test $gcc_cv_as_eh_frame = buggy; then
2679 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2680 [Define if your assembler mis-optimizes .eh_frame data.])
2683 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2684 [elf,2,12,0], [--fatal-warnings],
2685 [.section .rodata.str, "aMS", @progbits, 1])
2686 if test $gcc_cv_as_shf_merge = no; then
2687 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2688 [elf,2,12,0], [--fatal-warnings],
2689 [.section .rodata.str, "aMS", %progbits, 1])
2691 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2692 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2693 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2695 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2696 gcc_cv_as_comdat_group,
2697 [elf,2,16,0], [--fatal-warnings],
2698 [.section .text,"axG",@progbits,.foo,comdat])
2699 if test $gcc_cv_as_comdat_group = yes; then
2700 gcc_cv_as_comdat_group_percent=no
2701 gcc_cv_as_comdat_group_group=no
2703 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2704 gcc_cv_as_comdat_group_percent,
2705 [elf,2,16,0], [--fatal-warnings],
2706 [.section .text,"axG",%progbits,.foo,comdat])
2707 if test $gcc_cv_as_comdat_group_percent = yes; then
2708 gcc_cv_as_comdat_group_group=no
2711 # Sun as uses a completely different syntax.
2716 .group foo,".text%foo",#comdat
2717 .section ".text%foo", #alloc,#execinstr,#progbits
2722 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2724 .group foo,.text%foo,#comdat
2725 .section .text%foo, "ax", @progbits
2731 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2732 gcc_cv_as_comdat_group_group,
2738 if test x"$ld_is_gold" = xyes; then
2740 elif test $in_tree_ld = yes ; then
2742 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2743 && test $in_tree_ld_is_elf = yes; then
2746 elif echo "$ld_ver" | grep GNU > /dev/null; then
2748 if test 0"$ld_date" -lt 20050308; then
2749 if test -n "$ld_date"; then
2750 # If there was date string, but was earlier than 2005-03-08, fail
2752 elif test "$ld_vers_major" -lt 2; then
2754 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2761 *-*-solaris2.1[1-9]*)
2763 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2764 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2767 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2768 # least ld version 1.2267.
2769 if test "$ld_vers_major" -gt 1; then
2771 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2773 elif test "$ld_vers_minor" -ge 2267; then
2778 # Assume linkers other than GNU ld don't support COMDAT group.
2784 # Allow overriding the automatic COMDAT group tests above.
2785 AC_ARG_ENABLE(comdat,
2786 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2787 [comdat_group="$enable_comdat"])
2788 if test $comdat_group = no; then
2789 gcc_cv_as_comdat_group=no
2790 gcc_cv_as_comdat_group_percent=no
2791 gcc_cv_as_comdat_group_group=no
2793 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2794 [`if test $gcc_cv_as_comdat_group = yes \
2795 || test $gcc_cv_as_comdat_group_percent = yes \
2796 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2797 [Define 0/1 if your assembler and linker support COMDAT groups.])
2799 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2800 gcc_cv_as_discriminator,
2804 .loc 1 1 0 discriminator 1],,
2805 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2806 [Define if your assembler supports the .loc discriminator sub-directive.])])
2808 # Thread-local storage - the check is heavily parameterized.
2817 .section ".tdata","awT",@progbits
2820 ldq $27,__tls_get_addr($29) !literal!1
2821 lda $16,foo($29) !tlsgd!1
2822 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2823 ldq $27,__tls_get_addr($29) !literal!2
2824 lda $16,foo($29) !tlsldm!2
2825 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2826 ldq $1,foo($29) !gotdtprel
2827 ldah $2,foo($29) !dtprelhi
2828 lda $3,foo($2) !dtprello
2829 lda $4,foo($29) !dtprel
2830 ldq $1,foo($29) !gottprel
2831 ldah $2,foo($29) !tprelhi
2832 lda $3,foo($2) !tprello
2833 lda $4,foo($29) !tprel'
2836 tls_as_opt=--fatal-warnings
2838 cris-*-*|crisv32-*-*)
2840 .section ".tdata","awT",@progbits
2847 tls_as_opt=--fatal-warnings
2851 .section ".tdata","awT",@progbits
2863 .section ".tdata","awT",@progbits
2867 addil LT%foo-$tls_gdidx$,gp
2868 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2871 addil LT%foo-$tls_ldidx$,gp
2873 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2874 addil LR%foo-$tls_dtpoff$,%ret0
2875 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2877 addil LT%foo-$tls_ieoff$,gp
2878 ldw RT%foo-$tls_ieoff$(%r1),%t2
2881 addil LR%foo-$tls_leoff$,%t1
2882 ldo RR%foo-$tls_leoff$(%r1),%t2'
2885 tls_as_opt=--fatal-warnings
2889 .section ".tdata","awT",%progbits
2900 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2902 i[34567]86-*-solaris2.*)
2904 tga_func=___tls_get_addr
2906 x86_64-*-solaris2.1[0-9]*)
2908 tga_func=__tls_get_addr
2914 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2916 .section .tdata,"awt",@progbits'
2920 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2921 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2925 .section ".tdata","awT",@progbits'
2928 tls_as_opt="--fatal-warnings"
2930 conftest_s="$conftest_s
2934 leal foo@tlsgd(,%ebx,1), %eax
2935 leal foo@tlsldm(%ebx), %eax
2936 leal foo@dtpoff(%eax), %edx
2937 movl foo@gottpoff(%ebx), %eax
2938 subl foo@gottpoff(%ebx), %eax
2939 addl foo@gotntpoff(%ebx), %eax
2940 movl foo@indntpoff, %eax
2941 movl \$foo@tpoff, %eax
2942 subl \$foo@tpoff, %eax
2943 leal foo@ntpoff(%ecx), %eax"
2947 .section ".tdata","awT",@progbits
2951 leaq foo@TLSGD(%rip), %rdi
2952 leaq foo@TLSLD(%rip), %rdi
2953 leaq foo@DTPOFF(%rax), %rdx
2954 movq foo@GOTTPOFF(%rip), %rax
2955 movq $foo@TPOFF, %rax'
2958 tls_as_opt=--fatal-warnings
2962 .section ".tdata","awT",@progbits
2965 addl r16 = @ltoff(@dtpmod(foo#)), gp
2966 addl r17 = @ltoff(@dtprel(foo#)), gp
2967 addl r18 = @ltoff(@tprel(foo#)), gp
2968 addl r19 = @dtprel(foo#), gp
2969 adds r21 = @dtprel(foo#), r13
2970 movl r23 = @dtprel(foo#)
2971 addl r20 = @tprel(foo#), gp
2972 adds r22 = @tprel(foo#), r13
2973 movl r24 = @tprel(foo#)'
2976 tls_as_opt=--fatal-warnings
2980 .section .tdata,"awT",@progbits
2984 addiu $4, $28, %tlsgd(x)
2985 addiu $4, $28, %tlsldm(x)
2986 lui $4, %dtprel_hi(x)
2987 addiu $4, $4, %dtprel_lo(x)
2988 lw $4, %gottprel(x)($28)
2989 lui $4, %tprel_hi(x)
2990 addiu $4, $4, %tprel_lo(x)'
2993 tls_as_opt='-32 --fatal-warnings'
2997 .section .tdata,"awT",@progbits
3002 move.l x@TLSGD(%a5),%a0
3003 move.l x@TLSLDM(%a5),%a0
3004 move.l x@TLSLDO(%a5),%a0
3005 move.l x@TLSIE(%a5),%a0
3006 move.l x@TLSLE(%a5),%a0'
3009 tls_as_opt='--fatal-warnings'
3013 .section ".tdata","awT",@progbits
3021 addi 3,31,ld0@got@tlsgd
3023 addi 3,31,x1@got@tlsld
3026 addis 9,3,x2@dtprel@ha
3027 addi 9,9,x2@dtprel@l
3028 lwz 9,x3@got@tprel(31)
3031 addis 9,2,x2@tprel@ha
3032 addi 9,9,x2@tprel@l'
3035 tls_as_opt="-a32 --fatal-warnings"
3039 .section ".tdata","awT",@progbits
3047 addi 3,2,ld0@got@tlsgd
3053 addi 3,2,x1@got@tlsld
3059 addis 9,3,x2@dtprel@ha
3060 addi 9,9,x2@dtprel@l
3063 ld 9,x3@got@dtprel(2)
3069 tls_as_opt="-a64 --fatal-warnings"
3073 .section ".tdata","awT",@progbits
3082 l %r1,foo@GOTNTPOFF(%r12)
3083 l %r1,0(%r1):tls_load:foo
3084 bas %r14,0(%r1,%r13):tls_gdcall:foo
3085 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3088 tls_as_opt="-m31 --fatal-warnings"
3092 .section ".tdata","awT",@progbits
3100 lg %r1,foo@GOTNTPOFF(%r12)
3101 larl %r1,foo@INDNTPOFF
3102 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3103 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3106 tls_as_opt="-m64 -Aesame --fatal-warnings"
3108 sh-*-* | sh[34]-*-*)
3110 .section ".tdata","awT",@progbits
3120 tls_as_opt=--fatal-warnings
3124 sparc*-sun-solaris2.*)
3126 tga_func=__tls_get_addr
3132 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3134 .section ".tdata",#alloc,#write,#tls'
3139 .section ".tdata","awT",@progbits'
3142 tls_as_opt="-32 --fatal-warnings"
3144 conftest_s="$conftest_s
3147 sethi %tgd_hi22(foo), %o0
3148 add %o0, %tgd_lo10(foo), %o1
3149 add %l7, %o1, %o0, %tgd_add(foo)
3150 call __tls_get_addr, %tgd_call(foo)
3151 sethi %tldm_hi22(foo), %l1
3152 add %l1, %tldm_lo10(foo), %l2
3153 add %l7, %l2, %o0, %tldm_add(foo)
3154 call __tls_get_addr, %tldm_call(foo)
3155 sethi %tldo_hix22(foo), %l3
3156 xor %l3, %tldo_lox10(foo), %l4
3157 add %o0, %l4, %l5, %tldo_add(foo)
3158 sethi %tie_hi22(foo), %o3
3159 add %o3, %tie_lo10(foo), %o3
3160 ld [%l7 + %o3], %o2, %tie_ld(foo)
3161 add %g7, %o2, %o4, %tie_add(foo)
3162 sethi %tle_hix22(foo), %l1
3163 xor %l1, %tle_lox10(foo), %o5
3164 ld [%g7 + %o5], %o1"
3168 .section ".tdata","awT",@progbits
3171 addli r0, zero, tls_gd(foo)
3172 auli r0, zero, tls_gd_ha16(foo)
3173 addli r0, r0, tls_gd_lo16(foo)
3175 addli r0, zero, tls_ie(foo)
3176 auli r0, r0, tls_ie_ha16(foo)
3177 addli r0, r0, tls_ie_lo16(foo)'
3180 tls_as_opt="--fatal-warnings"
3184 .section ".tdata","awT",@progbits
3187 shl16insli r0, zero, hw0_last_tls_gd(foo)
3188 shl16insli r0, zero, hw1_last_tls_gd(foo)
3189 shl16insli r0, r0, hw0_tls_gd(foo)
3191 shl16insli r0, zero, hw1_last_tls_ie(foo)
3192 shl16insli r0, r0, hw0_tls_ie(foo)'
3195 tls_as_opt="--fatal-warnings"
3199 .section ".tdata","awT",@progbits
3202 movi a8, foo@TLSFUNC
3203 movi a10, foo@TLSARG
3204 callx8.tls a8, foo@TLSCALL'
3211 if test "x$enable_tls" = xno ; then
3212 : # TLS explicitly disabled.
3213 elif test "x$enable_tls" = xyes ; then
3214 set_have_as_tls=yes # TLS explicitly enabled.
3215 elif test -z "$tls_first_major"; then
3216 : # If we don't have a check, assume no support.
3218 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3219 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3220 [set_have_as_tls=yes])
3224 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3225 # with TLS support are in use, native TLS cannot work.
3229 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3230 # gld with TLS support are in use, native TLS cannot work.
3233 # TLS was introduced in the Solaris 9 FCS release and backported to
3234 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3235 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3236 # ld and GCC don't support any longer.
3238 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3240 # Check ld and ld.so.1 TLS support.
3241 if echo "$ld_ver" | grep GNU > /dev/null; then
3242 # Assume all interesting versions of GNU ld have TLS support.
3243 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3247 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3249 min_tls_ld_vers_minor=280
3251 # Solaris 8/SPARC ld has TLS support since version 1.272.
3252 sparc*-*-solaris2.8)
3253 min_tls_ld_vers_minor=272
3255 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3257 min_tls_ld_vers_minor=374
3259 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3260 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3261 min_tls_ld_vers_minor=343
3264 if test "$ld_vers_major" -gt 1 || \
3265 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3271 AC_MSG_RESULT($ld_tls_support)
3274 save_LDFLAGS="$LDFLAGS"
3278 AC_MSG_CHECKING(alternate thread library)
3280 # TLS support was backported to Solaris 8 patches, but only lives in
3281 # the alternate thread library which became the default in Solaris 9.
3282 # We want to always use that, irrespective of TLS support.
3284 # Take multilib subdir into account. There's no spec to handle
3285 # this. The 64 symlink exists since Solaris 8.
3286 lwp_dir=/usr/lib/lwp
3287 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3288 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3295 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3296 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3297 [Define to the linker flags to use for -pthread.])
3298 AC_MSG_RESULT($lwp_dir)
3300 AC_MSG_CHECKING(library containing $tga_func)
3301 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3302 # (32-bit x86) only lived in libthread, so check for that. Keep
3303 # set_have_as_tls if found, disable if not.
3304 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3305 # Clear LIBS if we cannot support TLS.
3306 if test $set_have_as_tls = no; then
3309 # Even without TLS support on Solaris 8, explicitly link with libthread
3310 # to guarantee that the alternate thread library is used.
3316 # Always define LIB_TLS_SPEC, even without TLS support.
3317 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3318 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3319 AC_MSG_RESULT($LIBS)
3322 LDFLAGS="$save_LDFLAGS"
3325 if test $set_have_as_tls = yes ; then
3326 AC_DEFINE(HAVE_AS_TLS, 1,
3327 [Define if your assembler and linker support thread-local storage.])
3330 # Target-specific assembler checks.
3332 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3333 gcc_cv_ld_static_dynamic=no
3334 gcc_cv_ld_static_option='-Bstatic'
3335 gcc_cv_ld_dynamic_option='-Bdynamic'
3336 if test $in_tree_ld = yes ; then
3337 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3338 gcc_cv_ld_static_dynamic=yes
3340 elif test x$gcc_cv_ld != x; then
3341 # Check if linker supports -Bstatic/-Bdynamic option
3342 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3343 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3344 gcc_cv_ld_static_dynamic=yes
3347 # AIX ld uses -b flags
3348 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3349 gcc_cv_ld_static_dynamic=yes
3350 gcc_cv_ld_static_option="-bstatic"
3351 gcc_cv_ld_dynamic_option="-bdynamic"
3353 # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic.
3355 gcc_cv_ld_static_dynamic=yes
3356 gcc_cv_ld_static_option="-noso"
3357 gcc_cv_ld_dynamic_option="-so_archive"
3359 # HP-UX ld uses -a flags to select between shared and archive.
3361 if test x"$gnu_ld" = xno; then
3362 gcc_cv_ld_static_dynamic=yes
3363 gcc_cv_ld_static_option="-aarchive_shared"
3364 gcc_cv_ld_dynamic_option="-adefault"
3367 # IRIX 6 ld supports -Bstatic/-Bdynamic.
3369 gcc_cv_ld_static_dynamic=yes
3371 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3373 gcc_cv_ld_static_dynamic=yes
3378 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3379 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3380 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3381 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3382 [Define to the linker option to disable use of shared objects.])
3383 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3384 [Define to the linker option to enable use of shared objects.])
3386 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3388 if test x"$demangler_in_ld" = xyes; then
3389 AC_MSG_CHECKING(linker --demangle support)
3390 gcc_cv_ld_demangle=no
3391 if test $in_tree_ld = yes; then
3392 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3393 gcc_cv_ld_demangle=yes
3395 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3396 # Check if the GNU linker supports --demangle option
3397 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3398 gcc_cv_ld_demangle=yes
3401 if test x"$gcc_cv_ld_demangle" = xyes; then
3402 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3403 [Define if your linker supports --demangle option.])
3405 AC_MSG_RESULT($gcc_cv_ld_demangle)
3408 AC_MSG_CHECKING(linker plugin support)
3410 if test -f liblto_plugin.la; then
3411 save_ld_ver="$ld_ver"
3412 save_ld_vers_major="$ld_vers_major"
3413 save_ld_vers_minor="$ld_vers_minor"
3414 save_ld_is_gold="$ld_is_gold"
3418 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3420 # FIXME: ld_is_gold?
3421 ld_vers_major="$gcc_cv_gld_major_version"
3422 ld_vers_minor="$gcc_cv_gld_minor_version"
3424 # Determine plugin linker version.
3425 # FIXME: Partial duplicate from above, generalize.
3427 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3428 if echo "$ld_ver" | grep GNU > /dev/null; then
3429 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3431 ld_vers=`echo $ld_ver | sed -n \
3432 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3434 ld_vers=`echo $ld_ver | sed -n \
3435 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3437 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3438 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3443 # Determine plugin support.
3444 if echo "$ld_ver" | grep GNU > /dev/null; then
3445 # Require GNU ld or gold 2.21+ for plugin support by default.
3446 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3448 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3449 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3454 ld_ver="$save_ld_ver"
3455 ld_vers_major="$save_ld_vers_major"
3456 ld_vers_minor="$save_ld_vers_minor"
3457 ld_is_gold="$save_ld_is_gold"
3459 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3460 [Define to the level of your linker's plugin support.])
3461 AC_MSG_RESULT($gcc_cv_lto_plugin)
3464 # All TARGET_ABI_OSF targets.
3465 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3466 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3467 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3470 extbl $3, $2, $3 !lituse_bytoff!1
3471 ldq $2, a($29) !literal!1
3472 ldq $4, b($29) !literal!2
3473 ldq_u $3, 0($2) !lituse_base!1
3474 ldq $27, f($29) !literal!5
3475 jsr $26, ($27), f !lituse_jsr!5
3476 ldah $29, 0($26) !gpdisp!3
3477 lda $0, c($29) !gprel
3478 ldah $1, d($29) !gprelhigh
3479 lda $1, d($1) !gprellow
3480 lda $29, 0($29) !gpdisp!3],,
3481 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3482 [Define if your assembler supports explicit relocations.])])
3483 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3484 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3487 ldq $27, a($29) !literal!1
3488 jsr $26, ($27), a !lituse_jsrdirect!1],,
3489 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3490 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3494 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3495 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3496 [-no-mul-bug-abort], [.text],,
3497 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3498 [Define if your assembler supports the -no-mul-bug-abort option.])])
3502 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3503 [.register %g2, #scratch],,
3504 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3505 [Define if your assembler supports .register.])])
3507 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3509 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3510 [Define if your assembler supports -relax option.])])
3512 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3513 gcc_cv_as_sparc_gotdata_op,,
3520 sethi %gdop_hix22(foo), %g1
3521 xor %g1, %gdop_lox10(foo), %g1
3522 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3523 [if test x$gcc_cv_ld != x \
3524 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3525 if test x$gcc_cv_objdump != x; then
3526 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3527 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3528 gcc_cv_as_sparc_gotdata_op=no
3530 gcc_cv_as_sparc_gotdata_op=yes
3535 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3536 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3538 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3539 gcc_cv_as_sparc_ua_pcrel,,
3547 .uaword %r_disp32(foo)],
3548 [if test x$gcc_cv_ld != x \
3549 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3550 gcc_cv_as_sparc_ua_pcrel=yes
3553 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3554 [Define if your assembler and linker support unaligned PC relative relocs.])
3556 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3557 gcc_cv_as_sparc_ua_pcrel_hidden,,
3562 .uaword %r_disp32(foo)
3563 .byte 0x32, 0x33, 0x34
3568 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3569 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3570 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3571 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3572 if $gcc_cv_objdump -R conftest 2> /dev/null \
3573 | grep 'DISP32' > /dev/null 2>&1; then
3576 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3580 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3581 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3582 ]) # unaligned pcrel relocs
3584 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3585 gcc_cv_as_sparc_offsetable_lo10,,
3588 or %g1, %lo(ab) + 12, %g1
3589 or %g1, %lo(ab + 12), %g1],
3590 [if test x$gcc_cv_objdump != x \
3591 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3592 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3593 gcc_cv_as_sparc_offsetable_lo10=yes
3595 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3596 [Define if your assembler supports offsetable %lo().])])
3598 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3599 gcc_cv_as_sparc_fmaf,,
3602 .register %g2, #scratch
3603 .register %g3, #scratch
3605 fmaddd %f0, %f2, %f4, %f6
3606 addxccc %g1, %g2, %g3
3607 fsrl32 %f2, %f4, %f8
3608 fnaddd %f10, %f12, %f14],,
3609 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3610 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3614 i[34567]86-*-* | x86_64-*-*)
3618 # Full C++ conformance when using a shared libstdc++-v3 requires some
3619 # support from the Cygwin DLL, which in more recent versions exports
3620 # wrappers to aid in interposing and redirecting operators new, delete,
3621 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3622 # are configuring for a version of Cygwin that exports the wrappers.
3623 if test x$host = x$target; then
3624 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3626 # Can't check presence of libc functions during cross-compile, so
3627 # we just have to assume we're building for an up-to-date target.
3628 gcc_ac_cygwin_dll_wrappers=yes
3630 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3631 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3632 [Define if you want to generate code by default that assumes that the
3633 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3636 cygwin* | pe | mingw32* | interix*)
3637 # Recent binutils allows the three-operand form of ".comm" on PE. This
3638 # definition is used unconditionally to initialise the default state of
3639 # the target option variable that governs usage of the feature.
3640 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3641 [2,19,52],,[.comm foo,1,32])
3642 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3643 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3644 [Define if your assembler supports specifying the alignment
3645 of objects allocated using the GAS .comm command.])
3646 # Used for DWARF 2 in PE
3647 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3648 gcc_cv_as_ix86_pe_secrel32,
3654 [if test x$gcc_cv_ld != x \
3655 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3656 gcc_cv_as_ix86_pe_secrel32=yes
3659 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3660 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3661 # Test if the assembler supports the extended form of the .section
3662 # directive that specifies section alignment. LTO support uses this,
3663 # but normally only after installation, so we warn but don't fail the
3664 # configure if LTO is enabled but the assembler does not support it.
3665 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3666 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3667 if test x$gcc_cv_as_section_has_align != xyes; then
3668 case ",$enable_languages," in
3670 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3674 # Test if the assembler supports the section flag 'e' for specifying
3675 # an excluded section.
3676 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3680 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3681 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3682 [Define if your assembler supports specifying the section flag e.])
3686 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3687 gcc_cv_as_ix86_filds,,,
3688 [filds mem; fists mem],,
3689 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3690 [Define if your assembler uses filds and fists mnemonics.])])
3692 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3693 gcc_cv_as_ix86_fildq,,,
3694 [fildq mem; fistpq mem],,
3695 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3696 [Define if your assembler uses fildq and fistq mnemonics.])])
3698 gcc_GAS_CHECK_FEATURE([cmov syntax],
3699 gcc_cv_as_ix86_cmov_sun_syntax,,,
3700 [cmovl.l %edx, %eax],,
3701 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3702 [Define if your assembler supports the Sun syntax for cmov.])])
3704 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3705 gcc_cv_as_ix86_ffreep,,,
3707 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3708 [Define if your assembler supports the ffreep mnemonic.])])
3710 gcc_GAS_CHECK_FEATURE([.quad directive],
3711 gcc_cv_as_ix86_quad,,,
3713 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3714 [Define if your assembler supports the .quad directive.])])
3716 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3717 gcc_cv_as_ix86_sahf,,,
3720 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3721 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3723 gcc_GAS_CHECK_FEATURE([swap suffix],
3724 gcc_cv_as_ix86_swap,,,
3725 [movl.s %esp, %ebp],,
3726 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3727 [Define if your assembler supports the swap suffix.])])
3729 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3730 gcc_cv_as_ix86_diff_sect_delta,,,
3738 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3739 [Define if your assembler supports the subtraction of symbols in different sections.])])
3741 # These two are used unconditionally by i386.[ch]; it is to be defined
3742 # to 1 if the feature is present, 0 otherwise.
3743 as_ix86_gotoff_in_data_opt=
3744 if test x$gas = xyes; then
3745 as_ix86_gotoff_in_data_opt="--32"
3747 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3748 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
3749 [$as_ix86_gotoff_in_data_opt],
3755 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3756 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3757 [Define true if the assembler supports '.long foo@GOTOFF'.])
3759 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3760 gcc_cv_as_ix86_rep_lock_prefix,,,
3762 lock addl %edi, (%eax,%esi)
3763 lock orl $0, (%esp)],,
3764 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3765 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3767 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3768 gcc_cv_as_ix86_tlsgdplt,,,
3769 [call tls_gd@tlsgdplt],
3770 [if test x$gcc_cv_ld != x \
3771 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3772 gcc_cv_as_ix86_tlsgdplt=yes
3775 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3776 [Define if your assembler and linker support @tlsgdplt.])])
3778 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3779 gcc_cv_as_ix86_tlsldmplt,,,
3781 call tls_ld@tlsldmplt],
3782 [if test x$gcc_cv_ld != x \
3783 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3784 gcc_cv_as_ix86_tlsldmplt=yes
3787 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3788 [Define if your assembler and linker support @tlsldmplt.])])
3793 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3794 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3796 addl r15 = @ltoffx(x#), gp
3798 ld8.mov r16 = [[r15]], x#],,
3799 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3800 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3806 *-*-aix*) conftest_s=' .machine "pwr5"
3810 gcc_GAS_CHECK_FEATURE([.machine directive support],
3811 gcc_cv_as_machine_directive,,,
3812 [ .machine ppc7400])
3813 if test x$gcc_cv_as_machine_directive != xyes; then
3814 echo "*** This target requires an assembler supporting \".machine\"" >&2
3815 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3816 test x$build = x$target && exit 1
3820 *) conftest_s=' .machine power4
3825 gcc_GAS_CHECK_FEATURE([mfcr field support],
3826 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3828 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3829 [Define if your assembler supports mfcr field.])])
3832 *-*-aix*) conftest_s=' .machine "pwr5"
3835 *) conftest_s=' .machine power5
3840 gcc_GAS_CHECK_FEATURE([popcntb support],
3841 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3843 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3844 [Define if your assembler supports popcntb field.])])
3847 *-*-aix*) conftest_s=' .machine "pwr5x"
3850 *) conftest_s=' .machine power5
3855 gcc_GAS_CHECK_FEATURE([fp round support],
3856 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3858 [AC_DEFINE(HAVE_AS_FPRND, 1,
3859 [Define if your assembler supports fprnd.])])
3862 *-*-aix*) conftest_s=' .machine "pwr6"
3865 *) conftest_s=' .machine power6
3870 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3871 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3873 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3874 [Define if your assembler supports mffgpr and mftgpr.])])
3877 *-*-aix*) conftest_s=' .csect .text[[PR]]
3879 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3883 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3884 *) conftest_s=' .text
3886 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3889 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3890 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3892 [AC_DEFINE(HAVE_AS_REL16, 1,
3893 [Define if your assembler supports R_PPC_REL16 relocs.])])
3896 *-*-aix*) conftest_s=' .machine "pwr6"
3899 *) conftest_s=' .machine power6
3904 gcc_GAS_CHECK_FEATURE([compare bytes support],
3905 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3907 [AC_DEFINE(HAVE_AS_CMPB, 1,
3908 [Define if your assembler supports cmpb.])])
3911 *-*-aix*) conftest_s=' .machine "pwr6"
3914 *) conftest_s=' .machine power6
3919 gcc_GAS_CHECK_FEATURE([decimal float support],
3920 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3922 [AC_DEFINE(HAVE_AS_DFP, 1,
3923 [Define if your assembler supports DFP instructions.])])
3926 *-*-aix*) conftest_s=' .machine "pwr7"
3929 *) conftest_s=' .machine power7
3934 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3935 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3937 [AC_DEFINE(HAVE_AS_VSX, 1,
3938 [Define if your assembler supports VSX instructions.])])
3941 *-*-aix*) conftest_s=' .machine "pwr7"
3944 *) conftest_s=' .machine power7
3949 gcc_GAS_CHECK_FEATURE([popcntd support],
3950 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3952 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3953 [Define if your assembler supports POPCNTD instructions.])])
3956 *-*-aix*) conftest_s=' .csect .text[[PR]]
3958 *) conftest_s=' .text
3962 gcc_GAS_CHECK_FEATURE([lwsync support],
3963 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3965 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3966 [Define if your assembler supports LWSYNC instructions.])])
3969 *-*-aix*) conftest_s=' .machine "476"
3972 *) conftest_s=' .machine "476"
3977 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3978 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3980 [AC_DEFINE(HAVE_AS_DCI, 1,
3981 [Define if your assembler supports the DCI/ICI instructions.])])
3983 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3984 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3985 [.gnu_attribute 4,1],,
3986 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3987 [Define if your assembler supports .gnu_attribute.])])
3989 gcc_GAS_CHECK_FEATURE([tls marker support],
3990 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3991 [ bl __tls_get_addr(x@tlsgd)],,
3992 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3993 [Define if your assembler supports arg info for __tls_get_addr.])])
3997 gcc_GAS_CHECK_FEATURE([.ref support],
3998 gcc_cv_as_aix_ref, [2.21.0],,
3999 [ .csect stuff[[rw]]
4005 [AC_DEFINE(HAVE_AS_REF, 1,
4006 [Define if your assembler supports .ref])])
4012 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4013 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4014 [ lw $4,%gp_rel(foo)($4)],,
4015 [if test x$target_cpu_default = x
4016 then target_cpu_default=MASK_EXPLICIT_RELOCS
4017 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4019 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4020 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4021 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4022 [Define if the assembler understands -mno-shared.])])
4024 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4025 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4026 [.gnu_attribute 4,1],,
4027 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4028 [Define if your assembler supports .gnu_attribute.])])
4030 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4031 gcc_cv_as_mips_dtprelword, [2,18,0],,
4032 [.section .tdata,"awT",@progbits
4036 .dtprelword x+0x8000],,
4037 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4038 [Define if your assembler supports .dtprelword.])])
4040 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4041 gcc_cv_as_mips_dspr1_mult,,,
4051 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4052 [Define if your assembler supports DSPR1 mult.])])
4054 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4055 gcc_cv_as_ld_jalr_reloc=no
4056 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4057 if test $in_tree_ld = yes ; then
4058 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4059 && test $in_tree_ld_is_elf = yes; then
4060 gcc_cv_as_ld_jalr_reloc=yes
4062 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4063 echo ' .ent x' > conftest.s
4064 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
4065 echo ' ld $25,%call16(y)($28)' >> conftest.s
4066 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4067 echo '1: jalr $25' >> conftest.s
4068 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4069 echo '1: jalr $25' >> conftest.s
4070 echo ' .end x' >> conftest.s
4071 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4072 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4073 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4074 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4075 gcc_cv_as_ld_jalr_reloc=yes
4081 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4082 if test x$target_cpu_default = x; then
4083 target_cpu_default=MASK_RELAX_PIC_CALLS
4085 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4088 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4090 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4091 [gcc_cv_ld_mips_personality_relaxation],
4092 [gcc_cv_ld_mips_personality_relaxation=no
4093 if test $in_tree_ld = yes ; then
4094 if test "$gcc_cv_gld_major_version" -eq 2 \
4095 -a "$gcc_cv_gld_minor_version" -ge 21 \
4096 -o "$gcc_cv_gld_major_version" -gt 2; then
4097 gcc_cv_ld_mips_personality_relaxation=yes
4099 elif test x$gcc_cv_as != x \
4100 -a x$gcc_cv_ld != x \
4101 -a x$gcc_cv_readelf != x ; then
4102 cat > conftest.s <<EOF
4104 .cfi_personality 0x80,indirect_ptr
4111 .section .data,"aw",@progbits
4115 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4116 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4117 if $gcc_cv_readelf -d conftest 2>&1 \
4118 | grep TEXTREL > /dev/null 2>&1; then
4120 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4121 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4124 gcc_cv_ld_mips_personality_relaxation=yes
4128 rm -f conftest.s conftest.o conftest])
4129 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4130 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4131 [Define if your linker can relax absolute .eh_frame personality
4132 pointers into PC-relative form.])
4137 # Mips and HP-UX need the GNU assembler.
4138 # Linux on IA64 might be able to use the Intel assembler.
4141 mips*-*-* | *-*-hpux* )
4142 if test x$gas_flag = xyes \
4143 || test x"$host" != x"$build" \
4144 || test ! -x "$gcc_cv_as" \
4145 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4148 echo "*** This configuration requires the GNU assembler" >&2
4154 # ??? Not all targets support dwarf2 debug_line, even within a version
4155 # of gas. Moreover, we need to emit a valid instruction to trigger any
4156 # info to the output file. So, as supported targets are added to gas 2.11,
4157 # add some instruction here to (also) show we expect this might work.
4158 # ??? Once 2.11 is released, probably need to add first known working
4159 # version to the per-target configury.
4161 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4162 | pa | rs6000 | score | sparc | spu | tilegx | tilepro | xstormy16 | xtensa)
4172 if test x"$insn" != x; then
4174 .file 1 \"conftest.s\"
4177 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4178 gcc_cv_as_dwarf2_debug_line,
4179 [elf,2,11,0],, [$conftest_s],
4180 [if test x$gcc_cv_objdump != x \
4181 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4182 | grep debug_line > /dev/null 2>&1; then
4183 gcc_cv_as_dwarf2_debug_line=yes
4186 # The .debug_line file table must be in the exact order that
4187 # we specified the files, since these indices are also used
4188 # by DW_AT_decl_file. Approximate this test by testing if
4189 # the assembler bitches if the same index is assigned twice.
4190 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4191 gcc_cv_as_dwarf2_file_buggy,,,
4195 if test $gcc_cv_as_dwarf2_debug_line = yes \
4196 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4197 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4198 [Define if your assembler supports dwarf2 .file/.loc directives,
4199 and preserves file table indices exactly as given.])
4202 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4203 gcc_cv_as_gdwarf2_flag,
4204 [elf,2,11,0], [--gdwarf2], [$insn],,
4205 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4206 [Define if your assembler supports the --gdwarf2 option.])])
4208 gcc_GAS_CHECK_FEATURE([--gstabs option],
4209 gcc_cv_as_gstabs_flag,
4210 [elf,2,11,0], [--gstabs], [$insn],
4211 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4212 # and warns about it, but still exits successfully. So check for
4214 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4216 else gcc_cv_as_gstabs_flag=yes
4218 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4219 [Define if your assembler supports the --gstabs option.])])
4221 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4222 gcc_cv_as_debug_prefix_map_flag,
4223 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4224 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4225 [Define if your assembler supports the --debug-prefix-map option.])])
4228 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4231 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4232 [Define if your assembler supports .lcomm with an alignment field.])])
4234 AC_ARG_ENABLE(gnu-unique-object,
4235 [AS_HELP_STRING([--enable-gnu-unique-object],
4236 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4237 [case $enable_gnu_unique_object in
4239 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4240 Valid choices are 'yes' and 'no'.]) ;;
4242 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4244 [.type foo, '$target_type_format_char'gnu_unique_object],,
4245 # We need to unquote above to to use the definition from config.gcc.
4246 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4247 [[if test x$host = x$build -a x$host = x$target &&
4248 ldd --version 2>/dev/null &&
4249 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4250 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4251 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4252 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4253 if test "$glibcnum" -ge 2011 ; then
4254 enable_gnu_unique_object=yes
4257 if test x$enable_gnu_unique_object = xyes; then
4258 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4259 [Define if your assembler supports @gnu_unique_object.])
4262 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4263 [gcc_cv_as_line_zero],
4264 [gcc_cv_as_line_zero=no
4265 if test $in_tree_gas = yes; then
4266 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4267 elif test "x$gcc_cv_as" != x; then
4268 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4269 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4270 test "x`cat conftest.out`" = x
4272 gcc_cv_as_line_zero=yes
4274 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4275 cat conftest.s >&AS_MESSAGE_LOG_FD
4276 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4277 cat conftest.out >&AS_MESSAGE_LOG_FD
4279 rm -f conftest.o conftest.s conftest.out
4281 if test "x$gcc_cv_as_line_zero" = xyes; then
4282 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4283 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4286 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4287 gcc_cv_ld_eh_frame_hdr=no
4288 if test $in_tree_ld = yes ; then
4289 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4290 && test $in_tree_ld_is_elf = yes; then
4291 gcc_cv_ld_eh_frame_hdr=yes
4293 elif test x$gcc_cv_ld != x; then
4294 if echo "$ld_ver" | grep GNU > /dev/null; then
4295 # Check if linker supports --eh-frame-hdr option
4296 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4297 gcc_cv_ld_eh_frame_hdr=yes
4302 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4303 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4304 gcc_cv_ld_eh_frame_hdr=yes
4310 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4311 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4312 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4313 [Define if your linker supports .eh_frame_hdr.])
4315 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4317 AC_MSG_CHECKING(linker position independent executable support)
4319 if test $in_tree_ld = yes ; then
4320 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4321 && test $in_tree_ld_is_elf = yes; then
4324 elif test x$gcc_cv_ld != x; then
4325 # Check if linker supports -pie option
4326 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4330 if test x"$gcc_cv_ld_pie" = xyes; then
4331 AC_DEFINE(HAVE_LD_PIE, 1,
4332 [Define if your linker supports -pie option.])
4334 AC_MSG_RESULT($gcc_cv_ld_pie)
4336 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4337 gcc_cv_ld_eh_gc_sections=no
4338 if test $in_tree_ld = yes ; then
4339 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4340 && test $in_tree_ld_is_elf = yes; then
4341 gcc_cv_ld_eh_gc_sections=yes
4343 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4344 cat > conftest.s <<EOF
4347 .type _start, @function
4350 .size _start, .-_start
4351 .section .text.foo,"ax",@progbits
4352 .type foo, @function
4356 .section .gcc_except_table.foo,"a",@progbits
4359 .section .eh_frame,"a",@progbits
4362 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4363 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4364 | grep "gc-sections option ignored" > /dev/null; then
4365 gcc_cv_ld_eh_gc_sections=no
4366 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4367 | grep gcc_except_table > /dev/null; then
4368 gcc_cv_ld_eh_gc_sections=yes
4369 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4370 if test x$gcc_cv_as_comdat_group != xyes; then
4371 gcc_cv_ld_eh_gc_sections=no
4372 cat > conftest.s <<EOF
4375 .type _start, @function
4378 .size _start, .-_start
4379 .section .gnu.linkonce.t.foo,"ax",@progbits
4380 .type foo, @function
4384 .section .gcc_except_table.foo,"a",@progbits
4387 .section .eh_frame,"a",@progbits
4390 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4391 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4392 | grep "gc-sections option ignored" > /dev/null; then
4393 gcc_cv_ld_eh_gc_sections=no
4394 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4395 | grep gcc_except_table > /dev/null; then
4396 gcc_cv_ld_eh_gc_sections=yes
4402 rm -f conftest.s conftest.o conftest
4406 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4407 gcc_cv_ld_eh_gc_sections=no
4410 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4411 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4412 [Define if your linker supports garbage collection of
4413 sections in presence of EH frames.])
4415 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4417 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4418 gcc_cv_ld_eh_gc_sections_bug=no
4419 if test $in_tree_ld = yes ; then
4420 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4421 && test $in_tree_ld_is_elf = yes; then
4422 gcc_cv_ld_eh_gc_sections_bug=yes
4424 elif test x$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
4425 gcc_cv_ld_eh_gc_sections_bug=yes
4426 cat > conftest.s <<EOF
4429 .type _start, @function
4432 .size _start, .-_start
4433 .section .text.startup.foo,"ax",@progbits
4434 .type foo, @function
4438 .section .gcc_except_table.foo,"a",@progbits
4441 .section .eh_frame,"a",@progbits
4444 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4445 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4446 | grep "gc-sections option ignored" > /dev/null; then
4448 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4449 | grep gcc_except_table > /dev/null; then
4450 gcc_cv_ld_eh_gc_sections_bug=no
4453 rm -f conftest.s conftest.o conftest
4455 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4456 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4457 [Define if your linker has buggy garbage collection of
4458 sections support when .text.startup.foo like sections are used.])
4460 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4466 AC_CACHE_CHECK(linker --as-needed support,
4467 gcc_cv_ld_as_needed,
4468 [gcc_cv_ld_as_needed=no
4469 if test $in_tree_ld = yes ; then
4470 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4471 && test $in_tree_ld_is_elf = yes; then
4472 gcc_cv_ld_as_needed=yes
4474 elif test x$gcc_cv_ld != x; then
4475 # Check if linker supports --as-needed and --no-as-needed options
4476 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4477 gcc_cv_ld_as_needed=yes
4481 if test x"$gcc_cv_ld_as_needed" = xyes; then
4482 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4483 [Define if your linker supports --as-needed and --no-as-needed options.])
4486 case "$target:$tm_file" in
4487 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4490 emul_name="-melf64ppc"
4493 emul_name="-melf64ppc_fbsd"
4496 AC_CACHE_CHECK(linker support for omitting dot symbols,
4497 gcc_cv_ld_no_dot_syms,
4498 [gcc_cv_ld_no_dot_syms=no
4499 if test x"$ld_is_gold" = xyes; then
4500 gcc_cv_ld_no_dot_syms=yes
4501 elif test $in_tree_ld = yes ; then
4502 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4503 gcc_cv_ld_no_dot_syms=yes
4505 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4506 cat > conftest1.s <<EOF
4510 cat > conftest2.s <<EOF
4511 .section ".opd","aw"
4516 .quad .LEfoo,.TOC.@tocbase,0
4522 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4523 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4524 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4525 gcc_cv_ld_no_dot_syms=yes
4527 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4530 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4531 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4532 [Define if your PowerPC64 linker only needs function descriptor syms.])
4535 AC_CACHE_CHECK(linker large toc support,
4536 gcc_cv_ld_large_toc,
4537 [gcc_cv_ld_large_toc=no
4538 if test x"$ld_is_gold" = xyes; then
4539 gcc_cv_ld_large_toc=yes
4540 elif test $in_tree_ld = yes ; then
4541 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4542 gcc_cv_ld_large_toc=yes
4544 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4545 cat > conftest.s <<EOF
4546 .section ".tbss","awT",@nobits
4552 addis 9,13,ie0@got@tprel@ha
4553 ld 9,ie0@got@tprel@l(9)
4555 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4556 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4557 gcc_cv_ld_large_toc=yes
4559 rm -f conftest conftest.o conftest.s
4562 if test x"$gcc_cv_ld_large_toc" = xyes; then
4563 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4564 [Define if your PowerPC64 linker supports a large TOC.])
4569 AC_CACHE_CHECK(linker --build-id support,
4571 [gcc_cv_ld_buildid=no
4572 if test $in_tree_ld = yes ; then
4573 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4574 "$gcc_cv_gld_minor_version" -ge 18 -o \
4575 "$gcc_cv_gld_major_version" -gt 2 \
4576 && test $in_tree_ld_is_elf = yes; then
4577 gcc_cv_ld_buildid=yes
4579 elif test x$gcc_cv_ld != x; then
4580 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4581 gcc_cv_ld_buildid=yes
4584 if test x"$gcc_cv_ld_buildid" = xyes; then
4585 AC_DEFINE(HAVE_LD_BUILDID, 1,
4586 [Define if your linker supports --build-id.])
4589 AC_ARG_ENABLE(linker-build-id,
4590 [AS_HELP_STRING([--enable-linker-build-id],
4591 [compiler will always pass --build-id to linker])],
4593 enable_linker_build_id=no)
4595 if test x"$enable_linker_build_id" = xyes; then
4596 if test x"$gcc_cv_ld_buildid" = xyes; then
4597 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4598 [Define if gcc should always pass --build-id to linker.])
4600 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4604 # In binutils 2.21, GNU ld gained support for new emulations fully
4605 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4606 AC_CACHE_CHECK(linker *_sol2 emulation support,
4607 gcc_cv_ld_sol2_emulation,
4608 [gcc_cv_ld_sol2_emulation=no
4609 if test $in_tree_ld = yes ; then
4610 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4611 "$gcc_cv_gld_minor_version" -ge 21 -o \
4612 "$gcc_cv_gld_major_version" -gt 2 \
4613 && test $in_tree_ld_is_elf = yes; then
4614 gcc_cv_ld_sol2_emulation=yes
4616 elif test x$gcc_cv_ld != x; then
4617 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4618 grep _sol2 > /dev/null; then
4619 gcc_cv_ld_sol2_emulation=yes
4622 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4623 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4624 [Define if your linker supports the *_sol2 emulations.])
4627 AC_CACHE_CHECK(linker --sysroot support,
4629 [gcc_cv_ld_sysroot=no
4630 if test $in_tree_ld = yes ; then
4631 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4632 gcc_cv_ld_sysroot=yes
4634 elif test x$gcc_cv_ld != x; then
4635 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4636 gcc_cv_ld_sysroot=yes
4639 if test x"$gcc_cv_ld_sysroot" = xyes; then
4640 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4641 [Define if your linker supports --sysroot.])
4644 if test x$with_sysroot = x && test x$host = x$target \
4645 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4646 && test "$prefix" != "NONE"; then
4647 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4648 [Define to PREFIX/include if cpp should also search that directory.])
4651 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4652 if test "x$with_headers" != x; then
4653 target_header_dir=$with_headers
4654 elif test "x$with_sysroot" = x; then
4655 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4656 elif test "x$with_build_sysroot" != "x"; then
4657 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4658 elif test "x$with_sysroot" = xyes; then
4659 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4661 target_header_dir="${with_sysroot}${native_system_header_dir}"
4664 target_header_dir=${native_system_header_dir}
4667 # Test for stack protector support in target C library.
4668 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4669 gcc_cv_libc_provides_ssp,
4670 [gcc_cv_libc_provides_ssp=no
4672 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4673 [# glibc 2.4 and later provides __stack_chk_fail and
4674 # either __stack_chk_guard, or TLS access to stack guard canary.
4675 if test -f $target_header_dir/features.h \
4676 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4677 $target_header_dir/features.h > /dev/null; then
4678 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4679 $target_header_dir/features.h > /dev/null; then
4680 gcc_cv_libc_provides_ssp=yes
4681 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4682 $target_header_dir/features.h > /dev/null \
4683 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4684 $target_header_dir/features.h > /dev/null; then
4685 gcc_cv_libc_provides_ssp=yes
4686 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4687 $target_header_dir/features.h > /dev/null && \
4688 test -f $target_header_dir/bits/uClibc_config.h && \
4689 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4690 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4691 gcc_cv_libc_provides_ssp=yes
4693 # all versions of Bionic support stack protector
4694 elif test -f $target_header_dir/sys/cdefs.h \
4695 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
4696 $target_header_dir/sys/cdefs.h > /dev/null; then
4697 gcc_cv_libc_provides_ssp=yes
4701 # Avoid complicated tests (see
4702 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4703 # simply assert that glibc does provide this, which is true for all
4704 # realistically usable GNU/Hurd configurations.
4705 gcc_cv_libc_provides_ssp=yes;;
4706 *-*-darwin* | *-*-freebsd*)
4707 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4708 [echo "no __stack_chk_fail on this target"])
4710 *) gcc_cv_libc_provides_ssp=no ;;
4713 if test x$gcc_cv_libc_provides_ssp = xyes; then
4714 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4715 [Define if your target C library provides stack protector support])
4718 # Test for <sys/sdt.h> on the target.
4719 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4720 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4722 if test -f $target_header_dir/sys/sdt.h; then
4724 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4725 [Define if your target C library provides sys/sdt.h])
4727 AC_MSG_RESULT($have_sys_sdt_h)
4729 # Check if TFmode long double should be used by default or not.
4730 # Some glibc targets used DFmode long double, but with glibc 2.4
4731 # and later they can use TFmode.
4733 powerpc*-*-linux* | \
4737 AC_ARG_WITH(long-double-128,
4738 [AS_HELP_STRING([--with-long-double-128],
4739 [use 128-bit long double by default])],
4740 gcc_cv_target_ldbl128="$with_long_double_128",
4741 [[gcc_cv_target_ldbl128=no
4742 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4743 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4744 && gcc_cv_target_ldbl128=yes
4748 if test x$gcc_cv_target_ldbl128 = xyes; then
4749 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4750 [Define if TFmode long double should be the default])
4753 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4754 gcc_cv_target_dl_iterate_phdr=unknown
4756 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
4757 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
4758 # libdl there, both complicating its use and breaking compatibility
4759 # between Solaris 10 updates.
4760 *-*-solaris2.1[[1-9]]*)
4761 # <link.h> needs both a dl_iterate_phdr declaration and support for
4762 # compilation with largefile support.
4763 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4764 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4765 gcc_cv_target_dl_iterate_phdr=yes
4767 gcc_cv_target_dl_iterate_phdr=no
4771 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4772 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4773 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4774 [Define if your target C library provides the `dl_iterate_phdr' function.])
4776 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4778 # Find out what GC implementation we want, or may, use.
4780 [AS_HELP_STRING([--with-gc={page,zone}],
4781 [choose the garbage collection mechanism to use
4782 with the compiler])],
4789 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4792 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4797 echo "Using $GGC for garbage collection."
4799 # Libraries to use on the host. This will normally be set by the top
4800 # level Makefile. Here we simply capture the value for our Makefile.
4801 if test -z "${HOST_LIBS+set}"; then
4806 # Use the system's zlib library.
4808 zlibinc="-I\$(srcdir)/../zlib"
4809 AC_ARG_WITH(system-zlib,
4810 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4817 dnl Very limited version of automake's enable-maintainer-mode
4819 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4820 dnl maintainer-mode is disabled by default
4821 AC_ARG_ENABLE(maintainer-mode,
4822 [AS_HELP_STRING([--enable-maintainer-mode],
4823 [enable make rules and dependencies not useful
4824 (and sometimes confusing) to the casual installer])],
4825 maintainer_mode=$enableval,
4828 AC_MSG_RESULT($maintainer_mode)
4830 if test "$maintainer_mode" = "yes"; then
4841 # Make empty files to contain the specs and options for each language.
4842 # Then add #include lines to for a compiler that has specs and/or options.
4848 # These (without "all_") are set in each config-lang.in.
4849 # `language' must be a single word so is spelled singularly.
4852 all_outputs='Makefile'
4853 # List of language makefile fragments.
4855 # Additional files for gengtype
4856 all_gtfiles="$target_gtfiles"
4858 # These are the languages that are set in --enable-languages,
4859 # and are available in the GCC tree.
4860 all_selected_languages=
4862 # Add the language fragments.
4863 # Languages are added via two mechanisms. Some information must be
4864 # recorded in makefile variables, these are defined in config-lang.in.
4865 # We accumulate them and plug them into the main Makefile.
4866 # The other mechanism is a set of hooks for each of the main targets
4867 # like `clean', `install', etc.
4869 language_hooks="Make-hooks"
4871 for lang in ${srcdir}/*/config-lang.in
4874 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4876 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4877 if test "x$lang_alias" = x
4879 echo "$lang doesn't set \$language." 1>&2
4882 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4883 subdirs="$subdirs $subdir"
4885 # $gcc_subdir is where the gcc integration files are to be found
4886 # for a language, both for internal compiler purposes (compiler
4887 # sources implementing front-end to GCC tree converters), and for
4888 # build infrastructure purposes (Make-lang.in, etc.)
4890 # This will be <subdir> (relative to $srcdir) if a line like
4891 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4892 # is found in <langdir>/config-lang.in, and will remain <langdir>
4895 # Except for the language alias (fetched above), the regular
4896 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4897 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4898 # only this and the language alias.
4900 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4901 if [ "$gcc_subdir" = "" ]; then
4902 gcc_subdir="$subdir"
4905 case ",$enable_languages," in
4907 all_selected_languages="$all_selected_languages $lang_alias"
4908 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4909 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4921 . ${srcdir}/$gcc_subdir/config-lang.in
4922 if test "x$language" = x
4924 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4929 case ",$enable_languages," in
4932 for i in $subdir_requires; do
4933 test -f "${srcdir}/$i/config-lang.in" && continue
4941 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4942 if test -f $srcdir/$gcc_subdir/lang.opt; then
4943 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4944 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4946 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4947 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4949 all_languages="$all_languages $language"
4950 all_compilers="$all_compilers $compilers"
4951 all_outputs="$all_outputs $outputs"
4952 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4953 case ",$enable_languages," in
4955 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4957 AC_SUBST(enable_lto)
4963 # Pick up gtfiles for c
4965 . ${srcdir}/c-config-lang.in
4966 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4969 for language in $all_selected_languages
4971 check_languages="$check_languages check-$language"
4974 # We link each language in with a set of hooks, reached indirectly via
4975 # lang.${target}. Only do so for selected languages.
4979 target_list="all.cross start.encap rest.encap tags \
4980 install-common install-man install-info install-pdf install-html dvi \
4981 pdf html uninstall info man srcextra srcman srcinfo \
4982 mostlyclean clean distclean maintainer-clean install-plugin"
4984 for t in $target_list
4987 for lang in $all_selected_languages
4991 echo "lang.$t: $x" >> Make-hooks
4995 # Option include files
4998 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4999 option_includes="option-includes.mk"
5000 AC_SUBST_FILE(option_includes)
5008 echo "dir ." > .gdbinit
5009 echo "dir ${srcdir}" >> .gdbinit
5010 if test x$gdb_needs_out_file_path = xyes
5012 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5014 if test "x$subdirs" != x; then
5017 echo "dir ${srcdir}/$s" >> .gdbinit
5020 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5022 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5023 AC_SUBST(gcc_tooldir)
5026 # Find a directory in which to install a shared libgcc.
5028 AC_ARG_ENABLE(version-specific-runtime-libs,
5029 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5030 [specify that runtime libraries should be
5031 installed in a compiler-specific directory])])
5033 # Substitute configuration variables
5036 AC_SUBST(all_compilers)
5037 AC_SUBST(all_gtfiles)
5038 AC_SUBST(all_lang_makefrags)
5039 AC_SUBST(all_languages)
5040 AC_SUBST(all_selected_languages)
5041 AC_SUBST(build_exeext)
5042 AC_SUBST(build_install_headers_dir)
5043 AC_SUBST(build_xm_file_list)
5044 AC_SUBST(build_xm_include_list)
5045 AC_SUBST(build_xm_defines)
5046 AC_SUBST(build_file_translate)
5047 AC_SUBST(check_languages)
5048 AC_SUBST(cpp_install_dir)
5049 AC_SUBST(xmake_file)
5050 AC_SUBST(tmake_file)
5051 AC_SUBST(TM_ENDIAN_CONFIG)
5052 AC_SUBST(TM_MULTILIB_CONFIG)
5053 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5054 AC_SUBST(extra_gcc_objs)
5055 AC_SUBST(user_headers_inc_next_pre)
5056 AC_SUBST(user_headers_inc_next_post)
5057 AC_SUBST(extra_headers_list)
5058 AC_SUBST(extra_objs)
5059 AC_SUBST(extra_passes)
5060 AC_SUBST(extra_programs)
5061 AC_SUBST(float_h_file)
5062 AC_SUBST(gcc_config_arguments)
5063 AC_SUBST(gcc_gxx_include_dir)
5064 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5065 AC_SUBST(host_exeext)
5066 AC_SUBST(host_xm_file_list)
5067 AC_SUBST(host_xm_include_list)
5068 AC_SUBST(host_xm_defines)
5069 AC_SUBST(out_host_hook_obj)
5071 AC_SUBST(lang_opt_files)
5072 AC_SUBST(lang_specs_files)
5073 AC_SUBST(lang_tree_files)
5074 AC_SUBST(local_prefix)
5076 AC_SUBST(objc_boehm_gc)
5078 AC_SUBST(out_object_file)
5079 AC_SUBST(common_out_file)
5080 AC_SUBST(common_out_object_file)
5081 AC_SUBST(tm_file_list)
5082 AC_SUBST(tm_include_list)
5083 AC_SUBST(tm_defines)
5084 AC_SUBST(tm_p_file_list)
5085 AC_SUBST(tm_p_include_list)
5086 AC_SUBST(xm_file_list)
5087 AC_SUBST(xm_include_list)
5088 AC_SUBST(xm_defines)
5089 AC_SUBST(use_gcc_stdint)
5090 AC_SUBST(c_target_objs)
5091 AC_SUBST(cxx_target_objs)
5092 AC_SUBST(fortran_target_objs)
5093 AC_SUBST(target_cpu_default)
5095 AC_SUBST_FILE(language_hooks)
5098 if test x${build} = x${host} ; then
5099 if test x${host} = x${target} ; then
5100 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5102 echo "Links are now set up to build a cross-compiler" 1>&2
5103 echo " from ${host} to ${target}." 1>&2
5106 if test x${host} = x${target} ; then
5107 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5108 echo " for ${target}." 1>&2
5110 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5111 echo " from ${host} to ${target}." 1>&2
5115 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5116 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5118 AC_ARG_VAR(PPLLIBS,[How to link PPL])
5119 AC_ARG_VAR(PPLINC,[How to find PPL include files])
5121 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5122 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5123 if test "x${CLOOGLIBS}" != "x" ; then
5124 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5127 # Check for plugin support
5128 AC_ARG_ENABLE(plugin,
5129 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5130 enable_plugin=$enableval,
5131 enable_plugin=yes; default_plugin=yes)
5137 if test x$build = x$host; then
5138 export_sym_check="nm${exeext} -g"
5139 elif test x$host = x$target; then
5140 export_sym_check="$gcc_cv_nm -g"
5146 if test x$build = x$host; then
5147 export_sym_check="objdump${exeext} -T"
5148 elif test x$host = x$target; then
5149 export_sym_check="$gcc_cv_objdump -T"
5156 if test x"$enable_plugin" = x"yes"; then
5158 AC_MSG_CHECKING([for exported symbols])
5159 if test "x$export_sym_check" != x; then
5160 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5161 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest$ac_exeext > /dev/null 2>&1
5162 if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
5163 : # No need to use a flag
5164 AC_MSG_RESULT([yes])
5166 AC_MSG_RESULT([yes])
5167 AC_MSG_CHECKING([for -rdynamic])
5168 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest$ac_exeext > /dev/null 2>&1
5169 if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
5171 pluginlibs="-rdynamic"
5176 AC_MSG_RESULT([$plugin_rdynamic])
5179 AC_MSG_RESULT([unable to check])
5184 AC_SEARCH_LIBS([dlopen], [dl])
5185 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5186 pluginlibs="$pluginlibs -ldl"
5190 # Check that we can build shared objects with -fPIC -shared
5191 saved_LDFLAGS="$LDFLAGS"
5192 saved_CFLAGS="$CFLAGS"
5195 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5196 CFLAGS="$CFLAGS -fPIC"
5197 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5200 CFLAGS="$CFLAGS -fPIC"
5201 LDFLAGS="$LDFLAGS -fPIC -shared"
5204 AC_MSG_CHECKING([for -fPIC -shared])
5206 [extern int X;],[return X == 0;],
5207 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5208 [AC_MSG_RESULT([no]); have_pic_shared=no])
5209 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5213 LDFLAGS="$saved_LDFLAGS"
5214 CFLAGS="$saved_CFLAGS"
5216 # If plugin support had been requested but not available, fail.
5217 if test x"$enable_plugin" = x"no" ; then
5218 if test x"$default_plugin" != x"yes"; then
5220 Building GCC with plugin support requires a host that supports
5221 -fPIC, -shared, -ldl and -rdynamic.])
5226 AC_SUBST(pluginlibs)
5227 AC_SUBST(enable_plugin)
5228 if test x"$enable_plugin" = x"yes"; then
5229 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5233 AC_ARG_ENABLE(libquadmath-support,
5234 [AS_HELP_STRING([--disable-libquadmath-support],
5235 [disable libquadmath support for Fortran])],
5236 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5237 ENABLE_LIBQUADMATH_SUPPORT=yes)
5238 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5239 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5240 [Define to 1 to enable libquadmath support])
5244 # Specify what hash style to use by default.
5245 AC_ARG_WITH([linker-hash-style],
5246 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5247 [specify the linker hash style])],
5248 [case x"$withval" in
5250 LINKER_HASH_STYLE=sysv
5253 LINKER_HASH_STYLE=gnu
5256 LINKER_HASH_STYLE=both
5259 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5262 [LINKER_HASH_STYLE=''])
5263 if test x"${LINKER_HASH_STYLE}" != x; then
5264 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5265 [The linker hash style])
5268 # Configure the subdirectories
5269 # AC_CONFIG_SUBDIRS($subdirs)
5271 # Create the Makefile
5272 # and configure language subdirectories
5273 AC_CONFIG_FILES($all_outputs)
5275 AC_CONFIG_COMMANDS([default],
5277 case ${CONFIG_HEADERS} in
5278 *auto-host.h:config.in*)
5281 # Make sure all the subdirs exist.
5282 for d in $subdirs doc build common c-family
5284 test -d $d || mkdir $d
5287 [subdirs='$subdirs'])