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 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 "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [ --with-local-prefix=DIR specifies directory to put local include],
109 [case "${withval}" in
110 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
112 *) local_prefix=$with_local_prefix ;;
115 # Default local prefix if it is empty
116 if test x$local_prefix = x; then
117 local_prefix=/usr/local
120 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
121 # passed in by the toplevel make and thus we'd get different behavior
122 # depending on where we built the sources.
124 # Specify the g++ header file directory
125 AC_ARG_WITH(gxx-include-dir,
126 [ --with-gxx-include-dir=DIR
127 specifies directory to put g++ header files],
128 [case "${withval}" in
129 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
131 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
134 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
135 if test x${gcc_gxx_include_dir} = x; then
136 if test x${enable_version_specific_runtime_libs} = xyes; then
137 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 libstdcxx_incdir='include/c++/$(version)'
140 if test x$host != x$target; then
141 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
143 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
147 AC_ARG_WITH(cpp_install_dir,
148 [ --with-cpp-install-dir=DIR
149 install the user visible C preprocessor in DIR
150 (relative to PREFIX) as well as PREFIX/bin],
151 [if test x$withval = xyes; then
152 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
153 elif test x$withval != xno; then
154 cpp_install_dir=$withval
157 # We would like to our source tree to be readonly. However when releases or
158 # pre-releases are generated, the flex/bison generated files as well as the
159 # various formats of manuals need to be included along with the rest of the
160 # sources. Therefore we have --enable-generated-files-in-srcdir to do
163 AC_MSG_CHECKING([whether to place generated files in the source directory])
164 dnl generated-files-in-srcdir is disabled by default
165 AC_ARG_ENABLE(generated-files-in-srcdir,
166 [ --enable-generated-files-in-srcdir
167 put copies of generated files in source dir
168 intended for creating source tarballs for users
169 without texinfo bison or flex.],
170 generated_files_in_srcdir=$enableval,
171 generated_files_in_srcdir=no)
173 AC_MSG_RESULT($generated_files_in_srcdir)
175 if test "$generated_files_in_srcdir" = "yes"; then
182 # -------------------
183 # Find default linker
184 # -------------------
188 [ --with-gnu-ld arrange to work with GNU ld.],
189 gnu_ld_flag="$with_gnu_ld",
192 # With pre-defined ld
194 [ --with-ld arrange to use the specified ld (full pathname)],
195 DEFAULT_LINKER="$with_ld")
196 if test x"${DEFAULT_LINKER+set}" = x"set"; then
197 if test ! -x "$DEFAULT_LINKER"; then
198 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
199 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
202 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
203 [Define to enable the use of a default linker.])
206 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
207 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
209 AC_MSG_CHECKING([whether a default linker was specified])
210 if test x"${DEFAULT_LINKER+set}" = x"set"; then
211 if test x"$gnu_ld_flag" = x"no"; then
212 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
214 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
220 # With demangler in GNU ld
221 AC_ARG_WITH(demangler-in-ld,
222 [ --with-demangler-in-ld try to use demangler in GNU ld.],
223 demangler_in_ld="$with_demangler_in_ld",
226 # ----------------------
227 # Find default assembler
228 # ----------------------
232 [ --with-gnu-as arrange to work with GNU as],
233 gas_flag="$with_gnu_as",
237 [ --with-as arrange to use the specified as (full pathname)],
238 DEFAULT_ASSEMBLER="$with_as")
239 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
240 if test ! -x "$DEFAULT_ASSEMBLER"; then
241 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
242 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
245 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
246 [Define to enable the use of a default assembler.])
249 gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
250 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
252 AC_MSG_CHECKING([whether a default assembler was specified])
253 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
254 if test x"$gas_flag" = x"no"; then
255 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
257 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
267 # If a non-executable a.out is present (e.g. created by GNU as above even if
268 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
269 # file, even when creating an executable, so an execution test fails.
270 # Remove possible default executable files to avoid this.
272 # FIXME: This really belongs into AC_PROG_CC and can be removed once
273 # Autoconf includes it.
274 rm -f a.out a.exe b.out
276 # Find the native compiler
280 ACX_PROG_GNAT([-I"$srcdir"/ada])
282 # autoconf is lame and doesn't give us any substitution variable for this.
283 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
284 NO_MINUS_C_MINUS_O=yes
286 OUTPUT_OPTION='-o $@'
288 AC_SUBST(NO_MINUS_C_MINUS_O)
289 AC_SUBST(OUTPUT_OPTION)
291 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
292 # optimizations to be activated explicitly by the toplevel.
295 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
299 # -------------------------
300 # Check C compiler features
301 # -------------------------
303 AC_USE_SYSTEM_EXTENSIONS
307 # sizeof(char) is 1 by definition.
308 AC_CHECK_SIZEOF(void *)
309 AC_CHECK_SIZEOF(short)
311 AC_CHECK_SIZEOF(long)
312 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
313 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
316 # ---------------------
317 # Warnings and checking
318 # ---------------------
320 # Check $CC warning features (if it's GCC).
321 # We want to use -pedantic, but we don't want warnings about
325 # So, we only use -pedantic if we can disable those warnings.
327 ACX_PROG_CC_WARNING_OPTS(
328 m4_quote(m4_do([-W -Wall -Wwrite-strings -Wcast-qual])), [loose_warn])
329 ACX_PROG_CC_WARNING_OPTS(
330 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
332 ACX_PROG_CC_WARNING_OPTS(
333 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
334 ACX_PROG_CC_WARNING_OPTS(
335 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
336 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
337 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
338 [-Wno-overlength-strings])), [strict_warn])
339 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
341 # The above macros do nothing if the compiler is not GCC. However, the
342 # Makefile has more goo to add other flags, so these variables are used
343 # to enable warnings only for GCC.
346 if test "x$GCC" = "xyes"; then
347 warn_cflags='$(GCC_WARN_CFLAGS)'
348 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
350 AC_SUBST(warn_cflags)
351 AC_SUBST(warn_cxxflags)
353 # Enable expensive internal checks
355 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
359 AC_ARG_ENABLE(checking,
360 [ --enable-checking[=LIST]
361 enable expensive run-time checks. With LIST,
362 enable only specific categories of checks.
363 Categories are: yes,no,all,none,release.
364 Flags are: assert,df,fold,gc,gcac,gimple,misc,
365 rtlflag,rtl,runtime,tree,valgrind,types.],
366 [ac_checking_flags="${enableval}"],[
367 # Determine the default checks.
368 if test x$is_release = x ; then
369 ac_checking_flags=yes
371 ac_checking_flags=release
373 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
374 for check in release $ac_checking_flags
377 # these set all the flags to specific states
378 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
379 ac_fold_checking= ; ac_gc_checking=1 ;
380 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
381 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
382 ac_tree_checking=1 ; ac_valgrind_checking= ;
383 ac_types_checking=1 ;;
384 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
385 ac_fold_checking= ; ac_gc_checking= ;
386 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
387 ac_rtlflag_checking= ; ac_runtime_checking= ;
388 ac_tree_checking= ; ac_valgrind_checking= ;
389 ac_types_checking= ;;
390 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
391 ac_fold_checking=1 ; ac_gc_checking=1 ;
392 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
393 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
394 ac_tree_checking=1 ; ac_valgrind_checking= ;
395 ac_types_checking=1 ;;
396 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
397 ac_fold_checking= ; ac_gc_checking= ;
398 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
399 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
400 ac_tree_checking= ; ac_valgrind_checking= ;
401 ac_types_checking= ;;
402 # these enable particular checks
403 assert) ac_assert_checking=1 ;;
404 df) ac_df_checking=1 ;;
405 fold) ac_fold_checking=1 ;;
406 gc) ac_gc_checking=1 ;;
407 gcac) ac_gc_always_collect=1 ;;
408 gimple) ac_gimple_checking=1 ;;
409 misc) ac_checking=1 ;;
410 rtl) ac_rtl_checking=1 ;;
411 rtlflag) ac_rtlflag_checking=1 ;;
412 runtime) ac_runtime_checking=1 ;;
413 tree) ac_tree_checking=1 ;;
414 types) ac_types_checking=1 ;;
415 valgrind) ac_valgrind_checking=1 ;;
416 *) AC_MSG_ERROR(unknown check category $check) ;;
422 if test x$ac_checking != x ; then
423 AC_DEFINE(ENABLE_CHECKING, 1,
424 [Define if you want more run-time sanity checks. This one gets a grab
425 bag of miscellaneous but relatively cheap checks.])
426 nocommon_flag=-fno-common
428 AC_SUBST(nocommon_flag)
429 if test x$ac_df_checking != x ; then
430 AC_DEFINE(ENABLE_DF_CHECKING, 1,
431 [Define if you want more run-time sanity checks for dataflow.])
433 if test x$ac_assert_checking != x ; then
434 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
435 [Define if you want assertions enabled. This is a cheap check.])
437 if test x$ac_gimple_checking != x ; then
438 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
439 [Define if you want operations on GIMPLE (the basic data structure of
440 the high-level optimizers) to be checked for dynamic type safety at
441 runtime. This is moderately expensive.])
443 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
444 if test x$ac_runtime_checking != x ; then
445 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
446 [Define if you want runtime assertions enabled. This is a cheap check.])
448 if test x$ac_tree_checking != x ; then
449 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
450 [Define if you want all operations on trees (the basic data
451 structure of the front ends) to be checked for dynamic type safety
452 at runtime. This is moderately expensive. The tree browser debugging
453 routines will also be enabled by this option.
455 TREEBROWSER=tree-browser.o
457 if test x$ac_types_checking != x ; then
458 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
459 [Define if you want all gimple types to be verified after gimplifiation.
463 AC_SUBST(TREEBROWSER)
464 if test x$ac_rtl_checking != x ; then
465 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
466 [Define if you want all operations on RTL (the basic data structure
467 of the optimizer and back end) to be checked for dynamic type safety
468 at runtime. This is quite expensive.])
470 if test x$ac_rtlflag_checking != x ; then
471 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
472 [Define if you want RTL flag accesses to be checked against the RTL
473 codes that are supported for each access macro. This is relatively
476 if test x$ac_gc_checking != x ; then
477 AC_DEFINE(ENABLE_GC_CHECKING, 1,
478 [Define if you want the garbage collector to do object poisoning and
479 other memory allocation checks. This is quite expensive.])
481 if test x$ac_gc_always_collect != x ; then
482 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
483 [Define if you want the garbage collector to operate in maximally
484 paranoid mode, validating the entire heap and collecting garbage at
485 every opportunity. This is extremely expensive.])
487 if test x$ac_fold_checking != x ; then
488 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
489 [Define if you want fold checked that it never destructs its argument.
490 This is quite expensive.])
492 valgrind_path_defines=
495 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
496 dnl # an if statement. This was the source of very frustrating bugs
497 dnl # in converting to autoconf 2.5x!
498 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
500 if test x$ac_valgrind_checking != x ; then
501 # It is certainly possible that there's valgrind but no valgrind.h.
502 # GCC relies on making annotations so we must have both.
503 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
504 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
505 [[#include <valgrind/memcheck.h>
506 #ifndef VALGRIND_DISCARD
507 #error VALGRIND_DISCARD not defined
509 [gcc_cv_header_valgrind_memcheck_h=yes],
510 [gcc_cv_header_valgrind_memcheck_h=no])
511 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
512 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
513 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
514 [[#include <memcheck.h>
515 #ifndef VALGRIND_DISCARD
516 #error VALGRIND_DISCARD not defined
518 [gcc_cv_header_memcheck_h=yes],
519 [gcc_cv_header_memcheck_h=no])
520 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
521 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
522 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
523 if test "x$valgrind_path" = "x" \
524 || (test $have_valgrind_h = no \
525 && test $gcc_cv_header_memcheck_h = no \
526 && test $gcc_cv_header_valgrind_memcheck_h = no); then
527 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
529 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
530 valgrind_command="$valgrind_path -q"
531 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
532 [Define if you want to run subprograms and generated programs
533 through valgrind (a memory checker). This is extremely expensive.])
534 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
535 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
536 [Define if valgrind's valgrind/memcheck.h header is installed.])
538 if test $gcc_cv_header_memcheck_h = yes; then
539 AC_DEFINE(HAVE_MEMCHECK_H, 1,
540 [Define if valgrind's memcheck.h header is installed.])
543 AC_SUBST(valgrind_path_defines)
544 AC_SUBST(valgrind_command)
546 # Enable code coverage collection
547 AC_ARG_ENABLE(coverage,
548 [ --enable-coverage[=LEVEL]
549 enable compiler's code coverage collection.
550 Use to measure compiler performance and locate
551 unused parts of the compiler. With LEVEL, specify
552 optimization. Values are opt, noopt,
554 [case "${enableval}" in
556 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
559 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
562 # a.k.a. --disable-coverage
566 AC_MSG_ERROR(unknown coverage setting $enableval)
570 AC_SUBST(coverage_flags)
572 AC_ARG_ENABLE(gather-detailed-mem-stats,
573 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
574 [enable_gather_detailed_mem_stats=no])
575 if test x$enable_gather_detailed_mem_stats = xyes ; then
576 AC_DEFINE(GATHER_STATISTICS, 1,
577 [Define to enable detailed memory allocation stats gathering.])
580 # -------------------------------
581 # Miscenalleous configure options
582 # -------------------------------
584 # See if we are building gcc with C++.
585 AC_ARG_ENABLE(build-with-cxx,
586 [ --enable-build-with-cxx build with C++ compiler instead of C compiler],
587 ENABLE_BUILD_WITH_CXX=$enableval,
588 ENABLE_BUILD_WITH_CXX=no)
589 AC_SUBST(ENABLE_BUILD_WITH_CXX)
593 [ --with-stabs arrange to use stabs instead of host debug format],
597 # Determine whether or not multilibs are enabled.
598 AC_ARG_ENABLE(multilib,
599 [ --enable-multilib enable library support for multiple ABIs],
600 [], [enable_multilib=yes])
601 AC_SUBST(enable_multilib)
603 # Enable __cxa_atexit for C++.
604 AC_ARG_ENABLE(__cxa_atexit,
605 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
608 # Enable C extension for decimal float if target supports it.
609 AC_ARG_ENABLE(decimal-float,
610 [ --enable-decimal-float={no,yes,bid,dpd}
611 enable decimal float extension to C. Selecting 'bid'
612 or 'dpd' choses which decimal floating point format
615 case $enable_decimal_float in
616 yes | no | bid | dpd) ;;
617 *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
618 Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
623 powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
624 enable_decimal_float=yes
627 AC_MSG_WARN(decimal float is not supported for this target, ignored)
628 enable_decimal_float=no
633 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
634 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
635 [Define to 1 to enable decimal float extension to C.])
637 # x86's use BID format instead of DPD
638 case x$enable_decimal_float in
641 i?86*-*-linux* | x86_64*-*-linux*)
642 enable_decimal_float=bid
645 enable_decimal_float=dpd
650 # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
651 # dependency on libdecnumber.
652 enable_decimal_float=dpd
655 AC_SUBST(enable_decimal_float)
657 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
658 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
659 [Define to 1 to specify that we are using the BID decimal floating
660 point format instead of DPD])
662 # Enable C extension for fixed-point arithmetic.
663 AC_ARG_ENABLE(fixed-point,
664 [ --enable-fixed-point enable fixed-point arithmetic extension to C],
672 AC_MSG_WARN(fixed-point is not supported on IRIX, ignored)
673 enable_fixed_point=no
676 enable_fixed_point=yes
681 AC_MSG_WARN(fixed-point is not supported for this target, ignored)
682 enable_fixed_point=no
686 AC_SUBST(enable_fixed_point)
688 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
689 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
690 [Define to 1 to enable fixed-point arithmetic extension to C.])
693 # Pass with no value to take the default
694 # Pass with a value to specify a thread package
695 AC_ARG_ENABLE(threads,
696 [ --enable-threads enable thread usage for target GCC
697 --enable-threads=LIB use LIB thread package for target GCC],,
701 [ --enable-tls enable or disable generation of tls code
702 overriding the assembler check for tls support],
706 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
707 Valid choices are 'yes' and 'no'.]) ;;
711 AC_ARG_ENABLE(objc-gc,
712 [ --enable-objc-gc enable the use of Boehm's garbage collector with
713 the GNU Objective-C runtime],
714 if test x$enable_objc_gc = xno; then
722 [ --with-dwarf2 force the default debug format to be DWARF 2],
723 dwarf2="$with_dwarf2",
726 AC_ARG_ENABLE(shared,
727 [ --disable-shared don't provide a shared libgcc],
729 case $enable_shared in
733 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
734 for pkg in $enableval; do
735 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
742 ], [enable_shared=yes])
743 AC_SUBST(enable_shared)
745 AC_ARG_WITH(build-sysroot,
746 [ --with-build-sysroot=sysroot
747 use sysroot as the system root during the build])
750 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
752 case ${with_sysroot} in
753 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
754 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
757 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
758 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
760 if test "x$prefix" = xNONE; then
761 test_prefix=/usr/local
765 if test "x$exec_prefix" = xNONE; then
766 test_exec_prefix=$test_prefix
768 test_exec_prefix=$exec_prefix
770 case ${TARGET_SYSTEM_ROOT} in
771 "${test_prefix}"|"${test_prefix}/"*|\
772 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
773 '${prefix}'|'${prefix}/'*|\
774 '${exec_prefix}'|'${exec_prefix}/'*)
775 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
776 TARGET_SYSTEM_ROOT_DEFINE="$t"
781 TARGET_SYSTEM_ROOT_DEFINE=
782 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
784 AC_SUBST(TARGET_SYSTEM_ROOT)
785 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
786 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
789 [AS_HELP_STRING([--with-specs=SPECS],
790 [add SPECS to driver command-line processing])],
791 [CONFIGURE_SPECS=$withval],
794 AC_SUBST(CONFIGURE_SPECS)
796 # Build with intermodule optimisations
797 AC_ARG_ENABLE(intermodule,
798 [ --enable-intermodule build the compiler in one step],
799 [case ${enable_intermodule} in
800 yes) onestep="-onestep";;
806 ACX_PKGVERSION([GCC])
807 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
809 # Sanity check enable_languages in case someone does not run the toplevel
810 # configure # script.
811 AC_ARG_ENABLE(languages,
812 [ --enable-languages=LIST specify which front-ends to build],
813 [case ,${enable_languages}, in
815 # go safe -- we cannot be much sure without the toplevel
817 # analysis of which target libs are present and usable
821 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
826 enable_languages=c,${enable_languages}
829 [enable_languages=c])
831 AC_ARG_WITH(multilib-list,
832 [ --with-multilib-list Select multilibs (SH only)],
834 with_multilib_list=default)
836 # -------------------------
837 # Checks for other programs
838 # -------------------------
842 # Find some useful tools
844 # We need awk to create options.c and options.h.
845 # Bail out if it's missing.
847 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
855 # By default, the Darwin ranlib will not treat common symbols as
856 # definitions when building the archive table of contents. Other
857 # ranlibs do that; pass an option to the Darwin ranlib that makes
858 # it behave similarly.
864 AC_SUBST(ranlib_flags)
868 # See if cmp has --ignore-initial.
869 gcc_AC_PROG_CMP_IGNORE_INITIAL
871 # See if we have the mktemp command.
872 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
874 # See if makeinfo has been installed and is modern enough
875 # that we can use it.
876 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
877 [GNU texinfo.* \([0-9][0-9.]*\)],
878 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
879 if test $gcc_cv_prog_makeinfo_modern = no; then
881 *** Makeinfo is missing or too old.
882 *** Info documentation will not be built.])
889 # Is pod2man recent enough to regenerate manpages?
890 AC_MSG_CHECKING([for recent Pod::Man])
891 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
893 GENERATED_MANPAGES=generated-manpages
898 AC_SUBST(GENERATED_MANPAGES)
900 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
903 dnl Don't use AC_PROG_LEX; we insist on flex.
904 dnl LEXLIB is not useful in gcc.
905 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
908 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
910 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
911 # check for build == host before using them.
914 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
915 && test -d ../binutils ; then
916 NM='${objdir}/../binutils/nm-new'
918 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
922 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
923 && test -d ../binutils ; then
924 AR='${objdir}/../binutils/ar'
926 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
930 # --------------------
931 # Checks for C headers
932 # --------------------
934 # Need to reject headers which give warnings, so that the -Werror bootstrap
935 # works later. *sigh* This needs to come before all header checks.
942 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
943 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
944 sys/resource.h sys/param.h sys/times.h sys/stat.h \
945 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
947 # Check for thread headers.
948 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
949 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
951 # These tests can't be done till we know if we have limits.h.
960 # These libraries may be used by collect2.
961 # We may need a special search path to get them linked.
962 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
964 for libs in '' -lld -lmld \
965 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
966 '-L/usr/lib/cmplrs/cc3.11 -lmld'
969 AC_TRY_LINK_FUNC(ldopen,
970 [gcc_cv_collect2_libs="$libs"; break])
973 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
974 case $gcc_cv_collect2_libs in
976 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
978 AC_SUBST(COLLECT2_LIBS)
980 # When building Ada code on Alpha, we need exc_resume which is usually in
981 # -lexc. So test for it.
984 AC_SEARCH_LIBS(exc_resume, exc)
987 AC_SUBST(GNAT_LIBEXC)
989 # Some systems put ldexp and frexp in libm instead of libc; assume
990 # they're both in the same place. jcf-dump needs them.
993 AC_SEARCH_LIBS(ldexp, m)
998 # Use <inttypes.h> only if it exists,
999 # doesn't clash with <sys/types.h>, and declares intmax_t.
1000 AC_MSG_CHECKING(for inttypes.h)
1001 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1002 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1003 [[#include <sys/types.h>
1004 #include <inttypes.h>]],
1005 [[intmax_t i = -1;]])],
1006 [gcc_cv_header_inttypes_h=yes],
1007 [gcc_cv_header_inttypes_h=no])])
1008 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1009 if test $gcc_cv_header_inttypes_h = yes; then
1010 AC_DEFINE(HAVE_INTTYPES_H, 1,
1011 [Define if you have a working <inttypes.h> header file.])
1014 dnl Disabled until we have a complete test for buggy enum bitfields.
1015 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1017 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1018 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1019 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1020 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1021 putchar_unlocked putc_unlocked)
1022 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1023 sysconf strsignal getrusage nl_langinfo \
1024 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1027 save_CPPFLAGS="$CPPFLAGS"
1029 LIBS="$LIBS $LIBELFLIBS"
1030 AC_CHECK_FUNCS(elf_getshdrstrndx,,
1031 [AC_CHECK_FUNCS(elf_getshstrndx,
1032 [AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1036 return elf_getshstrndx (NULL, 0) == 0;
1037 }]])], AC_DEFINE(HAVE_ELF_GETSHSTRNDX_GABI, 1,
1038 [Define if elf_getshstrndx has gABI conformant return values.]))])]
1041 CPPFLAGS="$save_CPPFLAGS"
1043 if test x$ac_cv_func_mbstowcs = xyes; then
1044 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1045 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1051 [gcc_cv_func_mbstowcs_works=yes],
1052 [gcc_cv_func_mbstowcs_works=no],
1053 [gcc_cv_func_mbstowcs_works=yes])])
1054 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1055 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1056 [Define this macro if mbstowcs does not crash when its
1057 first argument is NULL.])
1061 AC_CHECK_TYPE(ssize_t, int)
1062 AC_CHECK_TYPE(caddr_t, char *)
1064 gcc_AC_FUNC_MMAP_BLACKLIST
1068 # Under VMS, vfork works very differently than on Unix. The standard test
1069 # won't work, and it isn't easily adaptable. It makes more sense to
1071 ac_cv_func_vfork_works=yes
1077 # Until we have in-tree GNU iconv:
1079 AC_SUBST(LIBICONV_DEP)
1085 # We will need to find libiberty.h and ansidecl.h
1086 saved_CFLAGS="$CFLAGS"
1087 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1088 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1089 strsignal strstr strverscmp \
1090 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1091 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1092 #include "ansidecl.h"
1093 #include "system.h"])
1095 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1096 #include "ansidecl.h"
1098 #ifdef HAVE_SYS_RESOURCE_H
1099 #include <sys/resource.h>
1103 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1104 #include "ansidecl.h"
1106 #ifdef HAVE_SYS_RESOURCE_H
1107 #include <sys/resource.h>
1109 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1110 [Define to `long' if <sys/resource.h> doesn't define.])])
1112 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1113 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1114 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1115 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1116 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1117 #include "ansidecl.h"
1126 gcc_AC_CHECK_DECLS(times, , ,[
1127 #include "ansidecl.h"
1129 #ifdef HAVE_SYS_TIMES_H
1130 #include <sys/times.h>
1134 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1135 #include "ansidecl.h"
1140 # More time-related stuff.
1141 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1142 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1143 #include "ansidecl.h"
1145 #ifdef HAVE_SYS_TIMES_H
1146 #include <sys/times.h>
1148 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1149 if test $ac_cv_struct_tms = yes; then
1150 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1151 [Define if <sys/times.h> defines struct tms.])
1154 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1155 # revisit after autoconf 2.50.
1156 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1157 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1158 #include "ansidecl.h"
1160 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1161 if test $gcc_cv_type_clock_t = yes; then
1162 AC_DEFINE(HAVE_CLOCK_T, 1,
1163 [Define if <time.h> defines clock_t.])
1166 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1167 CFLAGS="$saved_CFLAGS"
1169 gcc_AC_INITFINI_ARRAY
1171 # mkdir takes a single argument on some systems.
1172 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1180 # With Setjmp/Longjmp based exception handling.
1181 AC_ARG_ENABLE(sjlj-exceptions,
1182 [ --enable-sjlj-exceptions
1183 arrange to use setjmp/longjmp exception handling],
1186 if test $enableval != yes; then
1187 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1192 force_sjlj_exceptions=yes],
1195 force_sjlj_exceptions=yes
1199 force_sjlj_exceptions=no
1202 if test $force_sjlj_exceptions = yes; then
1203 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1204 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1205 [Define 0/1 to force the choice for exception handling model.])
1208 # For platforms with the unwind ABI which includes an unwind library,
1209 # libunwind, we can choose to use the system libunwind.
1210 # config.gcc also contains tests of with_system_libunwind.
1211 GCC_CHECK_UNWIND_GETIPINFO
1213 # --------------------------------------------------------
1214 # Build, host, and target specific configuration fragments
1215 # --------------------------------------------------------
1217 # Collect build-machine-specific information.
1218 . ${srcdir}/config.build
1220 # Collect host-machine-specific information.
1221 . ${srcdir}/config.host
1225 # Collect target-machine-specific information.
1226 . ${srcdir}/config.gcc
1228 extra_objs="${host_extra_objs} ${extra_objs}"
1229 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1231 # Default the target-machine variables that were not explicitly set.
1232 if test x"$tm_file" = x
1233 then tm_file=$cpu_type/$cpu_type.h; fi
1235 if test x"$extra_headers" = x
1236 then extra_headers=; fi
1238 if test x$md_file = x
1239 then md_file=$cpu_type/$cpu_type.md; fi
1241 if test x$out_file = x
1242 then out_file=$cpu_type/$cpu_type.c; fi
1244 if test x"$tmake_file" = x
1245 then tmake_file=$cpu_type/t-$cpu_type
1248 if test x"$dwarf2" = xyes
1249 then tm_file="$tm_file tm-dwarf2.h"
1252 # Say what files are being used for the output code and MD file.
1253 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1254 echo "Using \`$srcdir/config/$md_file' as machine description file."
1256 # If any of the xm_file variables contain nonexistent files, warn
1257 # about them and drop them.
1260 for x in $build_xm_file; do
1261 if test -f $srcdir/config/$x
1263 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1269 for x in $host_xm_file; do
1270 if test -f $srcdir/config/$x
1272 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1278 for x in $xm_file; do
1279 if test -f $srcdir/config/$x
1281 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1287 for f in $tm_file; do
1290 if test $count = ax; then
1291 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1293 echo "Using the following target machine macro files:"
1294 for f in $tm_file; do
1295 echo " $srcdir/config/$f"
1299 if test x$need_64bit_hwint = xyes; then
1300 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1301 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1304 if test x$use_long_long_for_widest_fast_int = xyes; then
1305 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1306 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1307 efficiently supported by the host hardware.])
1311 for f in $host_xm_file; do
1314 if test $count = a; then
1316 elif test $count = ax; then
1317 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1319 echo "Using the following host machine macro files:"
1320 for f in $host_xm_file; do
1321 echo " $srcdir/config/$f"
1324 echo "Using ${out_host_hook_obj} for host machine hooks."
1326 if test "$host_xm_file" != "$build_xm_file"; then
1328 for f in $build_xm_file; do
1331 if test $count = a; then
1333 elif test $count = ax; then
1334 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1336 echo "Using the following build machine macro files:"
1337 for f in $build_xm_file; do
1338 echo " $srcdir/config/$f"
1345 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1346 gcc_cv_mcontext_underscores,
1348 #include <sys/cdefs.h>
1349 #include <sys/signal.h>
1350 #include <ucontext.h>
1351 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1353 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1354 if test $gcc_cv_mcontext_underscores = yes; then
1355 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1356 [mcontext_t fields start with __])
1365 # Check if a valid thread package
1366 case ${enable_threads} in
1369 target_thread_file='single'
1373 target_thread_file='single'
1375 aix | dce | gnat | irix | posix | posix95 | rtems | \
1376 single | solaris | vxworks | win32 | mipssde)
1377 target_thread_file=${enable_threads}
1380 echo "${enable_threads} is an unknown thread package" 1>&2
1385 if test x${thread_file} = x; then
1386 # No thread file set by target-specific clauses in config.gcc,
1387 # so use file chosen by default logic above
1388 thread_file=${target_thread_file}
1391 # Make gthr-default.h if we have a thread file.
1393 if test $thread_file != single; then
1394 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1395 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1396 rm -f gthr-default.h-t
1398 mv -f gthr-default.h-t gthr-default.h
1400 gthread_flags=-DHAVE_GTHR_DEFAULT
1402 AC_SUBST(gthread_flags)
1409 if test x$enable___cxa_atexit = xyes || \
1410 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1411 if test x$host = x$target; then
1413 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1414 # keyed to flag_use_cxa_atexit
1419 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1420 [echo "__cxa_atexit can't be enabled on this target"])
1424 # We can't check for __cxa_atexit when building a cross, so assume
1428 if test x$use_cxa_atexit = xyes; then
1429 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1430 [Define if you want to use __cxa_atexit, rather than atexit, to
1431 register C++ destructors for local statics and global objects.
1432 This is essential for fully standards-compliant handling of
1433 destructors, but requires __cxa_atexit in libc.])
1437 # Look for a file containing extra machine modes.
1438 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1439 extra_modes_file='$(srcdir)'/config/${extra_modes}
1440 AC_SUBST(extra_modes_file)
1441 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1442 [Define to the name of a file containing a list of extra machine modes
1443 for this architecture.])
1446 # Convert extra_options into a form suitable for Makefile use.
1448 for f in $extra_options; do
1449 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1451 AC_SUBST(extra_opt_files)
1453 # auto-host.h is the file containing items generated by autoconf and is
1454 # the first file included by config.h.
1455 # If host=build, it is correct to have bconfig include auto-host.h
1456 # as well. If host!=build, we are in error and need to do more
1457 # work to find out the build config parameters.
1458 if test x$host = x$build
1460 build_auto=auto-host.h
1462 # We create a subdir, then run autoconf in the subdir.
1463 # To prevent recursion we set host and build for the new
1464 # invocation of configure to the build for this invocation
1471 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1472 *) realsrcdir=../${srcdir};;
1474 saved_CFLAGS="${CFLAGS}"
1475 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1476 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1477 ${realsrcdir}/configure \
1478 --enable-languages=${enable_languages-all} \
1479 --target=$target_alias --host=$build_alias --build=$build_alias
1480 CFLAGS="${saved_CFLAGS}"
1482 # We just finished tests for the build machine, so rename
1483 # the file auto-build.h in the gcc directory.
1484 mv auto-host.h ../auto-build.h
1487 build_auto=auto-build.h
1489 AC_SUBST(build_subdir)
1491 tm_file="${tm_file} defaults.h"
1492 tm_p_file="${tm_p_file} tm-preds.h"
1493 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1494 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1495 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1496 # put this back in temporarily.
1497 xm_file="auto-host.h ansidecl.h ${xm_file}"
1504 # Compile in configure arguments.
1505 if test -f configargs.h ; then
1506 # Being re-configured.
1507 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1508 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1510 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1513 # Double all backslashes and backslash all quotes to turn
1514 # gcc_config_arguments into a C string.
1515 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1516 $gcc_config_arguments
1518 gcc_config_arguments_str=`cat conftest.out`
1521 cat > configargs.h <<EOF
1522 /* Generated automatically. */
1523 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1524 static const char thread_model[] = "$thread_file";
1526 static const struct {
1527 const char *name, *value;
1528 } configure_default_options[] = $configure_default_options;
1533 gcc_BASEVER=`cat $srcdir/BASE-VER`
1534 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1535 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1536 if test -f $srcdir/REVISION ; then
1537 gcc_REVISION=`cat $srcdir/REVISION`
1541 cat > plugin-version.h <<EOF
1542 #include "configargs.h"
1544 static char basever[] = "$gcc_BASEVER";
1545 static char datestamp[] = "$gcc_DATESTAMP";
1546 static char devphase[] = "$gcc_DEVPHASE";
1547 static char revision[] = "$gcc_REVISION";
1549 /* FIXME plugins: We should make the version information more precise.
1550 One way to do is to add a checksum. */
1552 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1554 configuration_arguments};
1558 # Internationalization
1559 ZW_GNU_GETTEXT_SISTER_DIR
1561 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1562 # -liconv on the link line twice.
1563 case "$LIBINTL" in *$LIBICONV*)
1567 AC_ARG_ENABLE(secureplt,
1568 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1571 AC_ARG_ENABLE(leading-mingw64-underscores,
1572 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1573 [Enable leading underscores on 64 bit mingw targets]),
1575 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1576 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1577 [Define if we should use leading underscore on 64 bit mingw targets])])
1580 [ --enable-cld enable -mcld by default for 32bit x86], [],
1583 AC_ARG_ENABLE(frame-pointer,
1584 [ --enable-frame-pointer enable -fno-omit-frame-pointer by default for 32bit x86], [],
1588 # Enable -fomit-frame-pointer by default for Linux.
1589 enable_frame_pointer=no
1592 enable_frame_pointer=yes
1597 # Windows32 Registry support for specifying GCC installation paths.
1598 AC_ARG_ENABLE(win32-registry,
1599 [ --disable-win32-registry
1600 disable lookup of installation paths in the
1601 Registry on Windows hosts
1602 --enable-win32-registry enable registry lookup (default)
1603 --enable-win32-registry=KEY
1604 use KEY instead of GCC version as the last portion
1605 of the registry key],,)
1608 win32 | pe | cygwin* | mingw32* | uwin*)
1609 if test "x$enable_win32_registry" != xno; then
1610 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1613 if test "x$enable_win32_registry" != xno; then
1614 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1615 [Define to 1 if installation paths should be looked up in the Windows
1616 Registry. Ignored on non-Windows hosts.])
1618 if test "x$enable_win32_registry" != xyes \
1619 && test "x$enable_win32_registry" != x; then
1620 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1621 [Define to be the last component of the Windows registry key under which
1622 to look for installation paths. The full key used will be
1623 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1624 The default is the GCC version number.])
1630 # Get an absolute path to the GCC top-level source directory
1631 holddir=`${PWDCMD-pwd}`
1633 topdir=`${PWDCMD-pwd}`
1636 # Conditionalize the makefile for this host machine.
1638 for f in ${host_xmake_file}
1640 if test -f ${srcdir}/config/$f
1642 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1646 # Conditionalize the makefile for this target machine.
1648 for f in ${tmake_file}
1650 if test -f ${srcdir}/config/$f
1652 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1655 tmake_file="${tmake_file_}"
1657 out_object_file=`basename $out_file .c`.o
1659 tm_file_list="options.h"
1660 tm_include_list="options.h insn-constants.h"
1661 for f in $tm_file; do
1664 f=`echo $f | sed 's/^..//'`
1665 tm_file_list="${tm_file_list} $f"
1666 tm_include_list="${tm_include_list} $f"
1669 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1670 tm_include_list="${tm_include_list} $f"
1673 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1674 tm_include_list="${tm_include_list} config/$f"
1681 for f in $tm_p_file; do
1684 tm_p_file_list="${tm_p_file_list} $f"
1685 tm_p_include_list="${tm_p_include_list} $f"
1688 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1689 tm_p_include_list="${tm_p_include_list} config/$f"
1695 for f in $xm_file; do
1698 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1699 xm_include_list="${xm_include_list} $f"
1702 xm_file_list="${xm_file_list} $f"
1703 xm_include_list="${xm_include_list} $f"
1706 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1707 xm_include_list="${xm_include_list} config/$f"
1713 host_xm_include_list=
1714 for f in $host_xm_file; do
1717 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1718 host_xm_include_list="${host_xm_include_list} $f"
1721 host_xm_file_list="${host_xm_file_list} $f"
1722 host_xm_include_list="${host_xm_include_list} $f"
1725 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1726 host_xm_include_list="${host_xm_include_list} config/$f"
1732 for f in $build_xm_file; do
1735 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1736 build_xm_include_list="${build_xm_include_list} $f"
1738 auto-build.h | auto-host.h )
1739 build_xm_file_list="${build_xm_file_list} $f"
1740 build_xm_include_list="${build_xm_include_list} $f"
1743 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1744 build_xm_include_list="${build_xm_include_list} config/$f"
1749 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1750 # cross-compiler which does not use the native headers and libraries.
1751 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1752 CROSS= AC_SUBST(CROSS)
1753 ALL=all.internal AC_SUBST(ALL)
1754 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1756 if test "x$with_build_sysroot" != x; then
1757 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1759 # This value is used, even on a native system, because
1760 # CROSS_SYSTEM_HEADER_DIR is just
1761 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1762 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1765 if test x$host != x$target
1767 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1769 SYSTEM_HEADER_DIR=$build_system_header_dir
1770 case "$host","$target" in
1771 # Darwin crosses can use the host system's libraries and headers,
1772 # because of the fat library support. Of course, it must be the
1773 # same version of Darwin on both sides. Allow the user to
1774 # just say --target=foo-darwin without a version number to mean
1775 # "the version on this system".
1776 *-*-darwin*,*-*-darwin*)
1777 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1778 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1779 if test $hostos = $targetos -o $targetos = darwin ; then
1781 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1786 i?86-*-*,x86_64-*-* \
1787 | powerpc*-*-*,powerpc64*-*-*)
1788 CROSS="$CROSS -DNATIVE_CROSS" ;;
1790 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1791 SYSTEM_HEADER_DIR=$build_system_header_dir
1794 # If this is a cross-compiler that does not
1795 # have its own set of headers then define
1798 # If this is using newlib, without having the headers available now,
1799 # then define inhibit_libc in LIBGCC2_CFLAGS.
1800 # This prevents libgcc2 from containing any code which requires libc
1802 : ${inhibit_libc=false}
1803 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1804 test x$with_newlib = xyes ; } &&
1805 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1808 AC_SUBST(inhibit_libc)
1810 # When building gcc with a cross-compiler, we need to adjust things so
1811 # that the generator programs are still built with the native compiler.
1812 # Also, we cannot run fixincludes.
1814 # These are the normal (build=host) settings:
1815 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1816 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1817 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1818 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1820 # And these apply if build != host, or we are generating coverage data
1821 if test x$build != x$host || test "x$coverage_flags" != x
1823 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1824 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1827 # Expand extra_headers to include complete path.
1828 # This substitutes for lots of t-* files.
1830 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1831 for file in ${extra_headers} ; do
1832 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1835 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1836 if test x"$use_gcc_tgmath" = xyes
1837 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1840 # Define collect2 in Makefile.
1841 case $host_can_use_collect2 in
1843 *) collect2='collect2$(exeext)' ;;
1845 AC_SUBST([collect2])
1847 # Add a definition of USE_COLLECT2 if system wants one.
1848 case $use_collect2 in
1849 no) use_collect2= ;;
1852 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1853 xm_defines="${xm_defines} USE_COLLECT2"
1854 case $host_can_use_collect2 in
1856 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1862 # ---------------------------
1863 # Assembler & linker features
1864 # ---------------------------
1866 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1867 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1868 # However when ld-new is first executed from the build tree, libtool will
1869 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1870 # to the build tree. While doing this we need to use the previous-stage
1871 # linker, or we have an infinite loop. The presence of a shell script as
1872 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1873 # the gcc/collect-ld script. So we need to know how libtool works, or
1874 # exec-tool will fail.
1876 m4_defun([_LT_CONFIG_COMMANDS], [])
1879 AC_SUBST(enable_fast_install)
1881 # Identify the assembler which will work hand-in-glove with the newly
1882 # built GCC, so that we can examine its features. This is the assembler
1883 # which will be driven by the driver program.
1885 # If build != host, and we aren't building gas in-tree, we identify a
1886 # build->target assembler and hope that it will have the same features
1887 # as the host->target assembler we'll be using.
1888 gcc_cv_gas_major_version=
1889 gcc_cv_gas_minor_version=
1890 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1892 m4_pattern_allow([AS_FOR_TARGET])dnl
1893 AS_VAR_SET_IF(gcc_cv_as,, [
1894 if test -x "$DEFAULT_ASSEMBLER"; then
1895 gcc_cv_as="$DEFAULT_ASSEMBLER"
1896 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1897 && test -f ../gas/Makefile \
1898 && test x$build = x$host; then
1899 gcc_cv_as=../gas/as-new$build_exeext
1900 elif test -x as$build_exeext; then
1901 # Build using assembler in the current directory.
1902 gcc_cv_as=./as$build_exeext
1903 elif test -x $AS_FOR_TARGET; then
1904 gcc_cv_as="$AS_FOR_TARGET"
1906 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1909 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1910 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1911 case "$ORIGINAL_AS_FOR_TARGET" in
1912 ./as | ./as$build_exeext) ;;
1913 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1916 AC_MSG_CHECKING(what assembler to use)
1917 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1918 # Single tree build which includes gas. We want to prefer it
1919 # over whatever linker top-level may have detected, since
1920 # we'll use what we're building after installation anyway.
1921 AC_MSG_RESULT(newly built gas)
1923 _gcc_COMPUTE_GAS_VERSION
1924 in_tree_gas_is_elf=no
1925 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1926 || (grep 'obj_format = multi' ../gas/Makefile \
1927 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1929 in_tree_gas_is_elf=yes
1932 AC_MSG_RESULT($gcc_cv_as)
1936 # Identify the linker which will work hand-in-glove with the newly
1937 # built GCC, so that we can examine its features. This is the linker
1938 # which will be driven by the driver program.
1940 # If build != host, and we aren't building gas in-tree, we identify a
1941 # build->target linker and hope that it will have the same features
1942 # as the host->target linker we'll be using.
1943 gcc_cv_gld_major_version=
1944 gcc_cv_gld_minor_version=
1945 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1946 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1948 AS_VAR_SET_IF(gcc_cv_ld,, [
1949 if test -x "$DEFAULT_LINKER"; then
1950 gcc_cv_ld="$DEFAULT_LINKER"
1951 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1952 && test -f ../ld/Makefile \
1953 && test x$build = x$host; then
1954 gcc_cv_ld=../ld/ld-new$build_exeext
1955 elif test -x collect-ld$build_exeext; then
1956 # Build using linker in the current directory.
1957 gcc_cv_ld=./collect-ld$build_exeext
1958 elif test -x $LD_FOR_TARGET; then
1959 gcc_cv_ld="$LD_FOR_TARGET"
1961 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1964 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1965 PLUGIN_LD=`basename $gcc_cv_ld`
1966 AC_ARG_WITH(plugin-ld,
1967 [ --with-plugin-ld=[[ARG]] specify the plugin linker],
1968 [if test x"$withval" != x; then
1969 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1970 PLUGIN_LD="$withval"
1972 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1973 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1975 # Check to see if we are using gold instead of ld
1976 AC_MSG_CHECKING(whether we are using gold)
1978 if test x$gcc_cv_ld != x; then
1979 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
1980 | grep "GNU gold" > /dev/null; then
1984 AC_MSG_RESULT($ld_is_gold)
1986 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1987 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1988 case "$ORIGINAL_LD_FOR_TARGET" in
1989 ./collect-ld | ./collect-ld$build_exeext) ;;
1990 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1993 AC_MSG_CHECKING(what linker to use)
1994 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1995 # Single tree build which includes ld. We want to prefer it
1996 # over whatever linker top-level may have detected, since
1997 # we'll use what we're building after installation anyway.
1998 AC_MSG_RESULT(newly built ld)
2000 in_tree_ld_is_elf=no
2001 if (grep 'EMUL = .*elf' ../ld/Makefile \
2002 || grep 'EMUL = .*linux' ../ld/Makefile \
2003 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2004 in_tree_ld_is_elf=yes
2006 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
2009 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
2010 if test x$gcc_cv_gld_version != x; then
2014 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2015 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2018 AC_MSG_RESULT($gcc_cv_ld)
2022 # Figure out what nm we will be using.
2023 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2024 AS_VAR_SET_IF(gcc_cv_nm,, [
2025 if test -f $gcc_cv_binutils_srcdir/configure.in \
2026 && test -f ../binutils/Makefile \
2027 && test x$build = x$host; then
2028 gcc_cv_nm=../binutils/nm-new$build_exeext
2029 elif test -x nm$build_exeext; then
2030 gcc_cv_nm=./nm$build_exeext
2031 elif test -x $NM_FOR_TARGET; then
2032 gcc_cv_nm="$NM_FOR_TARGET"
2034 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2037 AC_MSG_CHECKING(what nm to use)
2038 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2039 # Single tree build which includes binutils.
2040 AC_MSG_RESULT(newly built nm)
2043 AC_MSG_RESULT($gcc_cv_nm)
2047 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2048 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2049 case "$ORIGINAL_NM_FOR_TARGET" in
2050 ./nm | ./nm$build_exeext) ;;
2051 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2055 # Figure out what objdump we will be using.
2056 AS_VAR_SET_IF(gcc_cv_objdump,, [
2057 if test -f $gcc_cv_binutils_srcdir/configure.in \
2058 && test -f ../binutils/Makefile \
2059 && test x$build = x$host; then
2060 # Single tree build which includes binutils.
2061 gcc_cv_objdump=../binutils/objdump$build_exeext
2062 elif test -x objdump$build_exeext; then
2063 gcc_cv_objdump=./objdump$build_exeext
2064 elif test -x $OBJDUMP_FOR_TARGET; then
2065 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2067 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2070 AC_MSG_CHECKING(what objdump to use)
2071 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2072 # Single tree build which includes binutils.
2073 AC_MSG_RESULT(newly built objdump)
2074 elif test x$gcc_cv_objdump = x; then
2075 AC_MSG_RESULT(not found)
2077 AC_MSG_RESULT($gcc_cv_objdump)
2080 # Figure out what readelf we will be using.
2081 AS_VAR_SET_IF(gcc_cv_readelf,, [
2082 if test -f $gcc_cv_binutils_srcdir/configure.in \
2083 && test -f ../binutils/Makefile \
2084 && test x$build = x$host; then
2085 # Single tree build which includes binutils.
2086 gcc_cv_readelf=../binutils/readelf$build_exeext
2087 elif test -x readelf$build_exeext; then
2088 gcc_cv_readelf=./readelf$build_exeext
2090 AC_PATH_PROG(gcc_cv_readelf, readelf)
2093 AC_MSG_CHECKING(what readelf to use)
2094 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2095 # Single tree build which includes binutils.
2096 AC_MSG_RESULT(newly built readelf)
2097 elif test x$gcc_cv_readelf = x; then
2098 AC_MSG_RESULT(not found)
2100 AC_MSG_RESULT($gcc_cv_readelf)
2103 # Figure out what assembler alignment features are present.
2104 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2108 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2109 [Define if your assembler supports .balign and .p2align.])])
2111 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2114 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2115 [Define if your assembler supports specifying the maximum number
2116 of bytes to skip when using the GAS .p2align command.])])
2118 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2121 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2122 [Define if your assembler supports .literal16.])])
2124 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2126 [conftest_label1: .word 0
2128 conftest_label2: .word 0
2130 [if test x$gcc_cv_nm != x; then
2131 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2132 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2133 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2135 else gcc_cv_as_subsection_m1=yes
2137 rm -f conftest.nm1 conftest.nm2
2139 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2140 [Define if your assembler supports .subsection and .subsection -1 starts
2141 emitting at the beginning of your section.])])
2143 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2146 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2148 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2150 [ .weakref foobar, barfnot],,
2151 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2153 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2156 .NSUBSPA $CODE$,COMDAT],,
2157 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2159 # .hidden needs to be supported in both the assembler and the linker,
2160 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2161 # This is irritatingly difficult to feature test for; we have to check the
2162 # date string after the version number. If we've got an in-tree
2163 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2165 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2166 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2170 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2171 # STV_HIDDEN, so disable .hidden support if so.
2174 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2175 cat > conftest.s <<EOF
2182 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2183 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2184 grep '\.hidden default' > /dev/null; then
2187 gcc_cv_as_hidden=yes
2190 # Assume bug is present if objdump is missing.
2195 gcc_cv_as_hidden=yes
2200 if test $in_tree_ld != yes ; then
2201 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2202 if test x"$ld_is_gold" = xyes; then
2203 gcc_cv_ld_hidden=yes
2204 elif echo "$ld_ver" | grep GNU > /dev/null; then
2205 ld_vers=`echo $ld_ver | sed -n \
2206 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2207 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2208 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2209 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2210 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2215 # Solaris 2 ld -V output looks like this for a regular version:
2217 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2219 # but test versions add stuff at the end:
2221 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2223 ld_ver=`$gcc_cv_ld -V 2>&1`
2224 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2225 ld_vers=`echo $ld_ver | sed -n \
2226 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2227 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2228 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2236 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2237 [[if test $in_tree_ld = yes ; then
2239 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2240 && test $in_tree_ld_is_elf = yes; then
2241 gcc_cv_ld_hidden=yes
2244 gcc_cv_ld_hidden=yes
2245 if echo "$ld_ver" | grep GNU > /dev/null; then
2246 if test 0"$ld_date" -lt 20020404; then
2247 if test -n "$ld_date"; then
2248 # If there was date string, but was earlier than 2002-04-04, fail
2250 elif test -z "$ld_vers"; then
2251 # If there was no date string nor ld version number, something is wrong
2254 test -z "$ld_vers_patch" && ld_vers_patch=0
2255 if test "$ld_vers_major" -lt 2; then
2257 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2258 gcc_cv_ld_hidden="no"
2259 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2266 hppa64*-*-hpux* | ia64*-*-hpux*)
2267 gcc_cv_ld_hidden=yes
2269 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2270 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2271 # .symbolic was only added in Solaris 9 12/02.
2272 gcc_cv_ld_hidden=yes
2280 libgcc_visibility=no
2281 AC_SUBST(libgcc_visibility)
2282 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2283 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2284 libgcc_visibility=yes
2285 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2286 [Define if your assembler and linker support .hidden.])
2289 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2290 gcc_cv_ld_ro_rw_mix=unknown
2291 if test $in_tree_ld = yes ; then
2292 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2293 && test $in_tree_ld_is_elf = yes; then
2294 gcc_cv_ld_ro_rw_mix=read-write
2296 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2297 echo '.section myfoosect, "a"' > conftest1.s
2298 echo '.section myfoosect, "aw"' > conftest2.s
2299 echo '.byte 1' >> conftest2.s
2300 echo '.section myfoosect, "a"' > conftest3.s
2301 echo '.byte 0' >> conftest3.s
2302 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2303 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2304 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2305 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2306 conftest2.o conftest3.o > /dev/null 2>&1; then
2307 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2308 | sed -e '/myfoosect/!d' -e N`
2309 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2310 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2311 gcc_cv_ld_ro_rw_mix=read-only
2313 gcc_cv_ld_ro_rw_mix=read-write
2318 rm -f conftest.* conftest[123].*
2321 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2322 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2323 [Define if your linker links a mix of read-only
2324 and read-write sections into a read-write section.])
2326 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2328 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2329 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2337 [[# GAS versions before 2.11 do not support uleb128,
2338 # despite appearing to.
2339 # ??? There exists an elf-specific test that will crash
2340 # the assembler. Perhaps it's better to figure out whether
2341 # arbitrary sections are supported and try the test.
2342 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2343 if echo "$as_ver" | grep GNU > /dev/null; then
2344 as_vers=`echo $as_ver | sed -n \
2345 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2346 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2347 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2348 if test $as_major -eq 2 && test $as_minor -lt 11
2350 else gcc_cv_as_leb128=yes
2353 [AC_DEFINE(HAVE_AS_LEB128, 1,
2354 [Define if your assembler supports .sleb128 and .uleb128.])])
2356 # Check if we have assembler support for unwind directives.
2357 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2364 .cfi_escape 1, 2, 3, 4, 5
2368 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2369 # read-only and read-write sections, we need to make sure that the
2370 # assembler used emits read-write .eh_frame sections.
2371 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2372 if test "x$gcc_cv_objdump" != x; then
2373 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2374 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2375 gcc_cv_as_cfi_directive=no
2378 i?86-*-solaris2.1[[0-9]]*)
2379 # On Solaris/x86, make sure that GCC and gas agree on using
2380 # read-only .eh_frame sections for 64-bit.
2381 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2382 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2383 sed -e /.eh_frame/!d -e N | \
2384 grep READONLY > /dev/null; then
2385 gcc_cv_as_cfi_directive=yes
2387 gcc_cv_as_cfi_directive=no
2391 gcc_cv_as_cfi_directive=yes
2396 # no objdump, err on the side of caution
2397 gcc_cv_as_cfi_directive=no
2400 gcc_cv_as_cfi_directive=yes
2404 gcc_cv_as_cfi_directive=yes
2407 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_readelf != x; then
2408 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2412 .cfi_adjust_cfa_offset 64
2414 .cfi_adjust_cfa_offset 128
2417 if $gcc_cv_readelf -wf conftest.o 2>/dev/null \
2418 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2419 gcc_cv_as_cfi_advance_working=yes
2423 # no readelf, err on the side of caution
2424 gcc_cv_as_cfi_advance_working=no
2426 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2427 [`if test $gcc_cv_as_cfi_directive = yes \
2428 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2429 [Define 0/1 if your assembler supports CFI directives.])
2431 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2432 gcc_cv_as_cfi_personality_directive, ,,
2435 .cfi_personality 0, symbol
2437 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2438 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2439 then echo 1; else echo 0; fi`],
2440 [Define 0/1 if your assembler supports .cfi_personality.])
2442 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2443 gcc_cv_as_cfi_sections_directive, ,,
2445 .cfi_sections .debug_frame, .eh_frame
2448 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2449 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2450 then echo 1; else echo 0; fi`],
2451 [Define 0/1 if your assembler supports .cfi_sections.])
2453 # GAS versions up to and including 2.11.0 may mis-optimize
2455 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2463 .section .eh_frame,"aw",@progbits
2465 .4byte .LECIE1-.LSCIE1
2479 .4byte .LEFDE1-.LASFDE1
2481 .4byte .LASFDE1-__FRAME_BEGIN__
2489 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2490 cat > conftest.lit <<EOF
2491 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2492 0010 01000000 12000000 18000000 00000000 ................
2493 0020 08000000 04080000 0044 .........D @&t@
2495 cat > conftest.big <<EOF
2496 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2497 0010 00000001 00000012 00000018 00000000 ................
2498 0020 00000008 04000000 0844 .........D @&t@
2500 # If the assembler didn't choke, and we can objdump,
2501 # and we got the correct data, then succeed.
2502 # The text in the here-document typically retains its unix-style line
2503 # endings, while the output of objdump will use host line endings.
2504 # Therefore, use diff -b for the comparisons.
2505 if test x$gcc_cv_objdump != x \
2506 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2507 | tail -3 > conftest.got \
2508 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2509 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2511 gcc_cv_as_eh_frame=yes
2512 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2513 gcc_cv_as_eh_frame=buggy
2515 # Uh oh, what do we do now?
2516 gcc_cv_as_eh_frame=no
2519 if test $gcc_cv_as_eh_frame = buggy; then
2520 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2521 [Define if your assembler mis-optimizes .eh_frame data.])
2524 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2525 [elf,2,12,0], [--fatal-warnings],
2526 [.section .rodata.str, "aMS", @progbits, 1])
2527 if test $gcc_cv_as_shf_merge = no; then
2528 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2529 [elf,2,12,0], [--fatal-warnings],
2530 [.section .rodata.str, "aMS", %progbits, 1])
2532 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2533 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2534 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2536 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2537 [elf,2,16,0], [--fatal-warnings],
2538 [.section .text,"axG",@progbits,.foo,comdat])
2539 if test $gcc_cv_as_comdat_group = yes; then
2540 gcc_cv_as_comdat_group_percent=no
2542 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2543 [elf,2,16,0], [--fatal-warnings],
2544 [.section .text,"axG",%progbits,.foo,comdat])
2546 if test x"$ld_is_gold" = xyes; then
2548 elif test $in_tree_ld = yes ; then
2550 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2551 && test $in_tree_ld_is_elf = yes; then
2554 elif echo "$ld_ver" | grep GNU > /dev/null; then
2556 if test 0"$ld_date" -lt 20050308; then
2557 if test -n "$ld_date"; then
2558 # If there was date string, but was earlier than 2005-03-08, fail
2560 elif test "$ld_vers_major" -lt 2; then
2562 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2569 *-*-solaris2.1[1-9]*)
2570 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2571 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2574 # FIXME: Maybe need to refine later when COMDAT group support with
2575 # Sun as is implemented.
2576 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 1688; then
2583 # Assume linkers other than GNU ld don't support COMDAT group.
2589 # Allow overriding the automatic COMDAT group tests above.
2590 AC_ARG_ENABLE(comdat,
2591 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2592 [comdat_group="$enable_comdat"])
2593 if test $comdat_group = no; then
2594 gcc_cv_as_comdat_group=no
2595 gcc_cv_as_comdat_group_percent=no
2597 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2598 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2599 [Define 0/1 if your assembler and linker support COMDAT groups.])
2601 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2602 gcc_cv_as_discriminator,
2606 .loc 1 1 0 discriminator 1],,
2607 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2608 [Define if your assembler supports the .loc discriminator sub-directive.])])
2610 # Thread-local storage - the check is heavily parameterized.
2619 .section ".tdata","awT",@progbits
2622 ldq $27,__tls_get_addr($29) !literal!1
2623 lda $16,foo($29) !tlsgd!1
2624 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2625 ldq $27,__tls_get_addr($29) !literal!2
2626 lda $16,foo($29) !tlsldm!2
2627 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2628 ldq $1,foo($29) !gotdtprel
2629 ldah $2,foo($29) !dtprelhi
2630 lda $3,foo($2) !dtprello
2631 lda $4,foo($29) !dtprel
2632 ldq $1,foo($29) !gottprel
2633 ldah $2,foo($29) !tprelhi
2634 lda $3,foo($2) !tprello
2635 lda $4,foo($29) !tprel'
2638 tls_as_opt=--fatal-warnings
2640 cris-*-*|crisv32-*-*)
2642 .section ".tdata","awT",@progbits
2649 tls_as_opt=--fatal-warnings
2653 .section ".tdata","awT",@progbits
2665 .section ".tdata","awT",@progbits
2669 addil LT%foo-$tls_gdidx$,gp
2670 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2673 addil LT%foo-$tls_ldidx$,gp
2675 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2676 addil LR%foo-$tls_dtpoff$,%ret0
2677 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2679 addil LT%foo-$tls_ieoff$,gp
2680 ldw RT%foo-$tls_ieoff$(%r1),%t2
2683 addil LR%foo-$tls_leoff$,%t1
2684 ldo RR%foo-$tls_leoff$(%r1),%t2'
2687 tls_as_opt=--fatal-warnings
2691 .section ".tdata","awT",%progbits
2704 i[34567]86-*-solaris2.*)
2706 tga_func=___tls_get_addr
2712 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2714 .section .tdata,"awt",@progbits'
2718 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2719 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2723 .section ".tdata","awT",@progbits'
2726 tls_as_opt="--fatal-warnings"
2728 conftest_s="$conftest_s
2732 leal foo@tlsgd(,%ebx,1), %eax
2733 leal foo@tlsldm(%ebx), %eax
2734 leal foo@dtpoff(%eax), %edx
2735 movl foo@gottpoff(%ebx), %eax
2736 subl foo@gottpoff(%ebx), %eax
2737 addl foo@gotntpoff(%ebx), %eax
2738 movl foo@indntpoff, %eax
2739 movl \$foo@tpoff, %eax
2740 subl \$foo@tpoff, %eax
2741 leal foo@ntpoff(%ecx), %eax"
2745 .section ".tdata","awT",@progbits
2749 leaq foo@TLSGD(%rip), %rdi
2750 leaq foo@TLSLD(%rip), %rdi
2751 leaq foo@DTPOFF(%rax), %rdx
2752 movq foo@GOTTPOFF(%rip), %rax
2753 movq $foo@TPOFF, %rax'
2756 tls_as_opt=--fatal-warnings
2760 .section ".tdata","awT",@progbits
2763 addl r16 = @ltoff(@dtpmod(foo#)), gp
2764 addl r17 = @ltoff(@dtprel(foo#)), gp
2765 addl r18 = @ltoff(@tprel(foo#)), gp
2766 addl r19 = @dtprel(foo#), gp
2767 adds r21 = @dtprel(foo#), r13
2768 movl r23 = @dtprel(foo#)
2769 addl r20 = @tprel(foo#), gp
2770 adds r22 = @tprel(foo#), r13
2771 movl r24 = @tprel(foo#)'
2774 tls_as_opt=--fatal-warnings
2778 .section .tdata,"awT",@progbits
2782 addiu $4, $28, %tlsgd(x)
2783 addiu $4, $28, %tlsldm(x)
2784 lui $4, %dtprel_hi(x)
2785 addiu $4, $4, %dtprel_lo(x)
2786 lw $4, %gottprel(x)($28)
2787 lui $4, %tprel_hi(x)
2788 addiu $4, $4, %tprel_lo(x)'
2791 tls_as_opt='-32 --fatal-warnings'
2795 .section .tdata,"awT",@progbits
2800 move.l x@TLSGD(%a5),%a0
2801 move.l x@TLSLDM(%a5),%a0
2802 move.l x@TLSLDO(%a5),%a0
2803 move.l x@TLSIE(%a5),%a0
2804 move.l x@TLSLE(%a5),%a0'
2807 tls_as_opt='--fatal-warnings'
2811 .section ".tdata","awT",@progbits
2819 addi 3,31,ld0@got@tlsgd
2821 addi 3,31,x1@got@tlsld
2824 addis 9,3,x2@dtprel@ha
2825 addi 9,9,x2@dtprel@l
2826 lwz 9,x3@got@tprel(31)
2829 addis 9,2,x2@tprel@ha
2830 addi 9,9,x2@tprel@l'
2833 tls_as_opt="-a32 --fatal-warnings"
2837 .section ".tdata","awT",@progbits
2845 addi 3,2,ld0@got@tlsgd
2851 addi 3,2,x1@got@tlsld
2857 addis 9,3,x2@dtprel@ha
2858 addi 9,9,x2@dtprel@l
2861 ld 9,x3@got@dtprel(2)
2867 tls_as_opt="-a64 --fatal-warnings"
2871 .section ".tdata","awT",@progbits
2880 l %r1,foo@GOTNTPOFF(%r12)
2881 l %r1,0(%r1):tls_load:foo
2882 bas %r14,0(%r1,%r13):tls_gdcall:foo
2883 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2886 tls_as_opt="-m31 --fatal-warnings"
2890 .section ".tdata","awT",@progbits
2898 lg %r1,foo@GOTNTPOFF(%r12)
2899 larl %r1,foo@INDNTPOFF
2900 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2901 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2904 tls_as_opt="-m64 -Aesame --fatal-warnings"
2906 sh-*-* | sh[34]-*-*)
2908 .section ".tdata","awT",@progbits
2918 tls_as_opt=--fatal-warnings
2922 sparc*-sun-solaris2.*)
2924 tga_func=__tls_get_addr
2930 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2932 .section ".tdata",#alloc,#write,#tls'
2937 .section ".tdata","awT",@progbits'
2940 tls_as_opt="-32 --fatal-warnings"
2942 conftest_s="$conftest_s
2945 sethi %tgd_hi22(foo), %o0
2946 add %o0, %tgd_lo10(foo), %o1
2947 add %l7, %o1, %o0, %tgd_add(foo)
2948 call __tls_get_addr, %tgd_call(foo)
2949 sethi %tldm_hi22(foo), %l1
2950 add %l1, %tldm_lo10(foo), %l2
2951 add %l7, %l2, %o0, %tldm_add(foo)
2952 call __tls_get_addr, %tldm_call(foo)
2953 sethi %tldo_hix22(foo), %l3
2954 xor %l3, %tldo_lox10(foo), %l4
2955 add %o0, %l4, %l5, %tldo_add(foo)
2956 sethi %tie_hi22(foo), %o3
2957 add %o3, %tie_lo10(foo), %o3
2958 ld [%l7 + %o3], %o2, %tie_ld(foo)
2959 add %g7, %o2, %o4, %tie_add(foo)
2960 sethi %tle_hix22(foo), %l1
2961 xor %l1, %tle_lox10(foo), %o5
2962 ld [%g7 + %o5], %o1"
2966 .section ".tdata","awT",@progbits
2969 movi a8, foo@TLSFUNC
2970 movi a10, foo@TLSARG
2971 callx8.tls a8, foo@TLSCALL'
2978 if test "x$enable_tls" = xno ; then
2979 : # TLS explicitly disabled.
2980 elif test "x$enable_tls" = xyes ; then
2981 set_have_as_tls=yes # TLS explicitly enabled.
2982 elif test -z "$tls_first_major"; then
2983 : # If we don't have a check, assume no support.
2985 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2986 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2987 [set_have_as_tls=yes])
2990 # TLS was introduced in the Solaris 9 FCS release and backported to
2991 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
2992 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
2993 # ld and GCC don't support any longer.
2995 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
2997 # Check ld and ld.so.1 TLS support.
2998 if echo "$ld_ver" | grep GNU > /dev/null; then
2999 # Assume all interesting versions of GNU ld have TLS support.
3000 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3004 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3006 min_tls_ld_vers_minor=280
3008 # Solaris 8/SPARC ld has TLS support since version 1.272.
3009 sparc*-*-solaris2.8)
3010 min_tls_ld_vers_minor=272
3012 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3014 min_tls_ld_vers_minor=374
3016 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3017 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3018 min_tls_ld_vers_minor=343
3021 if test "$ls_vers_major" -gt 1 || \
3022 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3028 AC_MSG_RESULT($ld_tls_support)
3031 save_LDFLAGS="$LDFLAGS"
3035 AC_MSG_CHECKING(alternate thread library)
3037 # TLS support was backported to Solaris 8 patches, but only lives in
3038 # the alternate thread library which became the default in Solaris 9.
3039 # We want to always use that, irrespective of TLS support.
3041 # Take multilib subdir into account. There's no spec to handle
3042 # this. The 64 symlink exists since Solaris 8.
3043 lwp_dir=/usr/lib/lwp
3044 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3045 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3052 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3053 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3054 [Define to the linker flags to use for -pthread.])
3055 AC_MSG_RESULT($lwp_dir)
3057 AC_MSG_CHECKING(library containing $tga_func)
3058 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3059 # (32-bit x86) only lived in libthread, so check for that. Keep
3060 # set_have_as_tls if found, disable if not.
3061 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3062 # Clear LIBS if we cannot support TLS.
3063 if test $set_have_as_tls = no; then
3066 # Always define LIB_TLS_SPEC, even without TLS support.
3067 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3068 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3069 AC_MSG_RESULT($LIBS)
3072 LDFLAGS="$save_LDFLAGS"
3075 if test $set_have_as_tls = yes ; then
3076 AC_DEFINE(HAVE_AS_TLS, 1,
3077 [Define if your assembler and linker support thread-local storage.])
3080 # Target-specific assembler checks.
3082 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3083 gcc_cv_ld_static_dynamic=no
3084 if test $in_tree_ld = yes ; then
3085 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3086 gcc_cv_ld_static_dynamic=yes
3088 elif test x$gcc_cv_ld != x; then
3089 # Check if linker supports -Bstatic/-Bdynamic option
3090 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3091 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3092 gcc_cv_ld_static_dynamic=yes
3095 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3096 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3097 [Define if your linker supports -Bstatic/-Bdynamic option.])
3099 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3101 if test x"$demangler_in_ld" = xyes; then
3102 AC_MSG_CHECKING(linker --demangle support)
3103 gcc_cv_ld_demangle=no
3104 if test $in_tree_ld = yes; then
3105 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3106 gcc_cv_ld_demangle=yes
3108 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3109 # Check if the GNU linker supports --demangle option
3110 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3111 gcc_cv_ld_demangle=yes
3114 if test x"$gcc_cv_ld_demangle" = xyes; then
3115 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3116 [Define if your linker supports --demangle option.])
3118 AC_MSG_RESULT($gcc_cv_ld_demangle)
3122 # All TARGET_ABI_OSF targets.
3123 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3124 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3125 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3128 extbl $3, $2, $3 !lituse_bytoff!1
3129 ldq $2, a($29) !literal!1
3130 ldq $4, b($29) !literal!2
3131 ldq_u $3, 0($2) !lituse_base!1
3132 ldq $27, f($29) !literal!5
3133 jsr $26, ($27), f !lituse_jsr!5
3134 ldah $29, 0($26) !gpdisp!3
3135 lda $0, c($29) !gprel
3136 ldah $1, d($29) !gprelhigh
3137 lda $1, d($1) !gprellow
3138 lda $29, 0($29) !gpdisp!3],,
3139 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3140 [Define if your assembler supports explicit relocations.])])
3141 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3142 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3145 ldq $27, a($29) !literal!1
3146 jsr $26, ($27), a !lituse_jsrdirect!1],,
3147 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3148 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3152 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3153 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3154 [-no-mul-bug-abort], [.text],,
3155 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3156 [Define if your assembler supports the -no-mul-bug-abort option.])])
3160 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3161 [.register %g2, #scratch],,
3162 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3163 [Define if your assembler supports .register.])])
3165 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3167 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3168 [Define if your assembler supports -relax option.])])
3170 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3171 gcc_cv_as_sparc_gotdata_op,,
3177 sethi %gdop_hix22(foo), %g1
3178 xor %g1, %gdop_lox10(foo), %g1
3179 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3180 [if test x$gcc_cv_ld != x \
3181 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3182 if $gcc_cv_ld -v | grep GNU >/dev/null 2>&1; then
3183 if test x$gcc_cv_objdump != x; then
3184 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3185 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3186 gcc_cv_as_sparc_gotdata_op=no
3188 gcc_cv_as_sparc_gotdata_op=yes
3192 gcc_cv_as_sparc_gotdata_op=yes
3196 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3197 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3199 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3200 gcc_cv_as_sparc_ua_pcrel,,
3208 .uaword %r_disp32(foo)],
3209 [if test x$gcc_cv_ld != x \
3210 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3211 gcc_cv_as_sparc_ua_pcrel=yes
3214 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3215 [Define if your assembler and linker support unaligned PC relative relocs.])
3217 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3218 gcc_cv_as_sparc_ua_pcrel_hidden,,
3223 .uaword %r_disp32(foo)
3224 .byte 0x32, 0x33, 0x34
3229 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3230 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3231 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3232 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3233 if $gcc_cv_objdump -R conftest 2> /dev/null \
3234 | grep 'DISP32' > /dev/null 2>&1; then
3237 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3241 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3242 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3243 ]) # unaligned pcrel relocs
3245 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3246 gcc_cv_as_sparc_offsetable_lo10,,
3249 or %g1, %lo(ab) + 12, %g1
3250 or %g1, %lo(ab + 12), %g1],
3251 [if test x$gcc_cv_objdump != x \
3252 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3253 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3254 gcc_cv_as_sparc_offsetable_lo10=yes
3256 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3257 [Define if your assembler supports offsetable %lo().])])
3261 i[34567]86-*-* | x86_64-*-*)
3265 # Full C++ conformance when using a shared libstdc++-v3 requires some
3266 # support from the Cygwin DLL, which in more recent versions exports
3267 # wrappers to aid in interposing and redirecting operators new, delete,
3268 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3269 # are configuring for a version of Cygwin that exports the wrappers.
3270 if test x$host = x$target; then
3271 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3273 # Can't check presence of libc functions during cross-compile, so
3274 # we just have to assume we're building for an up-to-date target.
3275 gcc_ac_cygwin_dll_wrappers=yes
3277 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3278 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3279 [Define if you want to generate code by default that assumes that the
3280 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3283 cygwin* | pe | mingw32*)
3284 # Recent binutils allows the three-operand form of ".comm" on PE. This
3285 # definition is used unconditionally to initialise the default state of
3286 # the target option variable that governs usage of the feature.
3287 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3288 [2,19,52],,[.comm foo,1,32])
3289 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3290 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3291 [Define if your assembler supports specifying the alignment
3292 of objects allocated using the GAS .comm command.])
3293 # Used for DWARF 2 in PE
3294 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3295 gcc_cv_as_ix86_pe_secrel32,
3301 [if test x$gcc_cv_ld != x \
3302 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3303 gcc_cv_as_ix86_pe_secrel32=yes
3306 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3307 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3308 # Test if the assembler supports the extended form of the .section
3309 # directive that specifies section alignment. LTO support uses this,
3310 # but normally only after installation, so we warn but don't fail the
3311 # configure if LTO is enabled but the assembler does not support it.
3312 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3313 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3314 if test x$gcc_cv_as_section_has_align != xyes; then
3315 case ",$enable_languages," in
3317 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3324 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3325 gcc_cv_as_ix86_filds,,,
3326 [filds mem; fists mem],,
3327 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3328 [Define if your assembler uses filds and fists mnemonics.])])
3330 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3331 gcc_cv_as_ix86_fildq,,,
3332 [fildq mem; fistpq mem],,
3333 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3334 [Define if your assembler uses fildq and fistq mnemonics.])])
3336 gcc_GAS_CHECK_FEATURE([cmov syntax],
3337 gcc_cv_as_ix86_cmov_sun_syntax,,,
3338 [cmovl.l %edx, %eax],,
3339 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3340 [Define if your assembler supports the Sun syntax for cmov.])])
3342 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3343 gcc_cv_as_ix86_ffreep,,,
3345 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3346 [Define if your assembler supports the ffreep mnemonic.])])
3348 gcc_GAS_CHECK_FEATURE([.quad directive],
3349 gcc_cv_as_ix86_quad,,,
3351 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3352 [Define if your assembler supports the .quad directive.])])
3354 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3355 gcc_cv_as_ix86_sahf,,,
3358 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3359 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3361 gcc_GAS_CHECK_FEATURE([swap suffix],
3362 gcc_cv_as_ix86_swap,,,
3363 [movl.s %esp, %ebp],,
3364 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3365 [Define if your assembler supports the swap suffix.])])
3367 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3368 gcc_cv_as_ix86_diff_sect_delta,,,
3376 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3377 [Define if your assembler supports the subtraction of symbols in different sections.])])
3379 # These two are used unconditionally by i386.[ch]; it is to be defined
3380 # to 1 if the feature is present, 0 otherwise.
3381 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3382 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3388 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3389 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3390 [Define true if the assembler supports '.long foo@GOTOFF'.])
3392 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3393 gcc_cv_as_ix86_rep_lock_prefix,,,
3395 lock addl %edi, (%eax,%esi)
3396 lock orl $0, (%esp)],,
3397 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3398 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3403 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3404 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3406 addl r15 = @ltoffx(x#), gp
3408 ld8.mov r16 = [[r15]], x#],,
3409 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3410 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3416 *-*-aix*) conftest_s=' .machine "pwr5"
3420 gcc_GAS_CHECK_FEATURE([.machine directive support],
3421 gcc_cv_as_machine_directive,,,
3422 [ .machine ppc7400])
3423 if test x$gcc_cv_as_machine_directive != xyes; then
3424 echo "*** This target requires an assembler supporting \".machine\"" >&2
3425 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3426 test x$build = x$target && exit 1
3430 *) conftest_s=' .machine power4
3435 gcc_GAS_CHECK_FEATURE([mfcr field support],
3436 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3438 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3439 [Define if your assembler supports mfcr field.])])
3442 *-*-aix*) conftest_s=' .machine "pwr5"
3445 *) conftest_s=' .machine power5
3450 gcc_GAS_CHECK_FEATURE([popcntb support],
3451 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3453 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3454 [Define if your assembler supports popcntb field.])])
3457 *-*-aix*) conftest_s=' .machine "pwr5x"
3460 *) conftest_s=' .machine power5
3465 gcc_GAS_CHECK_FEATURE([fp round support],
3466 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3468 [AC_DEFINE(HAVE_AS_FPRND, 1,
3469 [Define if your assembler supports fprnd.])])
3472 *-*-aix*) conftest_s=' .machine "pwr6"
3475 *) conftest_s=' .machine power6
3480 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3481 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3483 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3484 [Define if your assembler supports mffgpr and mftgpr.])])
3487 *-*-aix*) conftest_s=' .csect .text[[PR]]
3489 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3493 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3494 *) conftest_s=' .text
3496 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3499 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3500 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3502 [AC_DEFINE(HAVE_AS_REL16, 1,
3503 [Define if your assembler supports R_PPC_REL16 relocs.])])
3506 *-*-aix*) conftest_s=' .machine "pwr6"
3509 *) conftest_s=' .machine power6
3514 gcc_GAS_CHECK_FEATURE([compare bytes support],
3515 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3517 [AC_DEFINE(HAVE_AS_CMPB, 1,
3518 [Define if your assembler supports cmpb.])])
3521 *-*-aix*) conftest_s=' .machine "pwr6"
3524 *) conftest_s=' .machine power6
3529 gcc_GAS_CHECK_FEATURE([decimal float support],
3530 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3532 [AC_DEFINE(HAVE_AS_DFP, 1,
3533 [Define if your assembler supports DFP instructions.])])
3536 *-*-aix*) conftest_s=' .machine "pwr7"
3539 *) conftest_s=' .machine power7
3544 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3545 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3547 [AC_DEFINE(HAVE_AS_VSX, 1,
3548 [Define if your assembler supports VSX instructions.])])
3551 *-*-aix*) conftest_s=' .machine "pwr7"
3554 *) conftest_s=' .machine power7
3559 gcc_GAS_CHECK_FEATURE([popcntd support],
3560 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3562 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3563 [Define if your assembler supports POPCNTD instructions.])])
3566 *-*-aix*) conftest_s=' .csect .text[[PR]]
3568 *) conftest_s=' .text
3572 gcc_GAS_CHECK_FEATURE([lwsync support],
3573 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3575 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3576 [Define if your assembler supports LWSYNC instructions.])])
3579 *-*-aix*) conftest_s=' .machine "476"
3582 *) conftest_s=' .machine "476"
3587 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3588 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3590 [AC_DEFINE(HAVE_AS_DCI, 1,
3591 [Define if your assembler supports the DCI/ICI instructions.])])
3593 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3594 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3595 [.gnu_attribute 4,1],,
3596 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3597 [Define if your assembler supports .gnu_attribute.])])
3599 gcc_GAS_CHECK_FEATURE([tls marker support],
3600 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3601 [ bl __tls_get_addr(x@tlsgd)],,
3602 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3603 [Define if your assembler supports arg info for __tls_get_addr.])])
3607 gcc_GAS_CHECK_FEATURE([.ref support],
3608 gcc_cv_as_aix_ref, [2.21.0],,
3609 [ .csect stuff[[rw]]
3615 [AC_DEFINE(HAVE_AS_REF, 1,
3616 [Define if your assembler supports .ref])])
3622 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3623 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3624 [ lw $4,%gp_rel(foo)($4)],,
3625 [if test x$target_cpu_default = x
3626 then target_cpu_default=MASK_EXPLICIT_RELOCS
3627 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3629 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3630 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3631 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3632 [Define if the assembler understands -mno-shared.])])
3634 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3635 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3636 [.gnu_attribute 4,1],,
3637 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3638 [Define if your assembler supports .gnu_attribute.])])
3640 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3641 gcc_cv_as_mips_dtprelword, [2,18,0],,
3642 [.section .tdata,"awT",@progbits
3646 .dtprelword x+0x8000],,
3647 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3648 [Define if your assembler supports .dtprelword.])])
3650 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3651 gcc_cv_as_ld_jalr_reloc=no
3652 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3653 if test $in_tree_ld = yes ; then
3654 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3655 && test $in_tree_ld_is_elf = yes; then
3656 gcc_cv_as_ld_jalr_reloc=yes
3658 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3659 echo ' .ent x' > conftest.s
3660 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3661 echo ' ld $25,%call16(y)($28)' >> conftest.s
3662 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3663 echo '1: jalr $25' >> conftest.s
3664 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3665 echo '1: jalr $25' >> conftest.s
3666 echo ' .end x' >> conftest.s
3667 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3668 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3669 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3670 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3671 gcc_cv_as_ld_jalr_reloc=yes
3677 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3678 if test x$target_cpu_default = x; then
3679 target_cpu_default=MASK_RELAX_PIC_CALLS
3681 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3684 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3686 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3687 [gcc_cv_ld_mips_personality_relaxation],
3688 [gcc_cv_ld_mips_personality_relaxation=no
3689 if test $in_tree_ld = yes ; then
3690 if test "$gcc_cv_gld_major_version" -eq 2 \
3691 -a "$gcc_cv_gld_minor_version" -ge 21 \
3692 -o "$gcc_cv_gld_major_version" -gt 2; then
3693 gcc_cv_ld_mips_personality_relaxation=yes
3695 elif test x$gcc_cv_as != x \
3696 -a x$gcc_cv_ld != x \
3697 -a x$gcc_cv_readelf != x ; then
3698 cat > conftest.s <<EOF
3700 .cfi_personality 0x80,indirect_ptr
3707 .section .data,"aw",@progbits
3711 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3712 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3713 if $gcc_cv_readelf -d conftest 2>&1 \
3714 | grep TEXTREL > /dev/null 2>&1; then
3716 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3717 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3720 gcc_cv_ld_mips_personality_relaxation=yes
3724 rm -f conftest.s conftest.o conftest])
3725 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3726 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3727 [Define if your linker can relax absolute .eh_frame personality
3728 pointers into PC-relative form.])
3733 # Mips and HP-UX need the GNU assembler.
3734 # Linux on IA64 might be able to use the Intel assembler.
3737 mips*-*-* | *-*-hpux* )
3738 if test x$gas_flag = xyes \
3739 || test x"$host" != x"$build" \
3740 || test ! -x "$gcc_cv_as" \
3741 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3744 echo "*** This configuration requires the GNU assembler" >&2
3750 # ??? Not all targets support dwarf2 debug_line, even within a version
3751 # of gas. Moreover, we need to emit a valid instruction to trigger any
3752 # info to the output file. So, as supported targets are added to gas 2.11,
3753 # add some instruction here to (also) show we expect this might work.
3754 # ??? Once 2.11 is released, probably need to add first known working
3755 # version to the per-target configury.
3757 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3758 | x86_64*-*-* | hppa*-*-* | arm*-*-* \
3759 | xstormy16*-*-* | cris-*-* | crisv32-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \
3760 | spu-*-* | fido*-*-* | m32c-*-*)
3763 ia64*-*-* | s390*-*-*)
3770 if test x"$insn" != x; then
3772 .file 1 \"conftest.s\"
3775 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3776 gcc_cv_as_dwarf2_debug_line,
3777 [elf,2,11,0],, [$conftest_s],
3778 [if test x$gcc_cv_objdump != x \
3779 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3780 | grep debug_line > /dev/null 2>&1; then
3781 gcc_cv_as_dwarf2_debug_line=yes
3784 # The .debug_line file table must be in the exact order that
3785 # we specified the files, since these indices are also used
3786 # by DW_AT_decl_file. Approximate this test by testing if
3787 # the assembler bitches if the same index is assigned twice.
3788 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3789 gcc_cv_as_dwarf2_file_buggy,,,
3793 if test $gcc_cv_as_dwarf2_debug_line = yes \
3794 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3795 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3796 [Define if your assembler supports dwarf2 .file/.loc directives,
3797 and preserves file table indices exactly as given.])
3800 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3801 gcc_cv_as_gdwarf2_flag,
3802 [elf,2,11,0], [--gdwarf2], [$insn],,
3803 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3804 [Define if your assembler supports the --gdwarf2 option.])])
3806 gcc_GAS_CHECK_FEATURE([--gstabs option],
3807 gcc_cv_as_gstabs_flag,
3808 [elf,2,11,0], [--gstabs], [$insn],
3809 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3810 # and warns about it, but still exits successfully. So check for
3812 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3814 else gcc_cv_as_gstabs_flag=yes
3816 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3817 [Define if your assembler supports the --gstabs option.])])
3819 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3820 gcc_cv_as_debug_prefix_map_flag,
3821 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3822 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3823 [Define if your assembler supports the --debug-prefix-map option.])])
3826 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3829 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3830 [Define if your assembler supports .lcomm with an alignment field.])])
3832 AC_ARG_ENABLE(gnu-unique-object,
3833 [ --enable-gnu-unique-object enable the use of the @gnu_unique_object ELF extension on
3835 [case $enable_gnu_unique_object in
3837 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
3838 Valid choices are 'yes' and 'no'.]) ;;
3840 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
3842 [.type foo, @gnu_unique_object],,
3843 # Also check for ld.so support, i.e. glibc 2.11 or higher.
3844 [[if test x$host = x$build -a x$host = x$target &&
3845 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
3846 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
3847 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
3848 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
3849 if test "$glibcnum" -ge 2011 ; then
3850 enable_gnu_unique_object=yes
3853 if test x$enable_gnu_unique_object = xyes; then
3854 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
3855 [Define if your assembler supports @gnu_unique_object.])
3858 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3859 [gcc_cv_as_line_zero],
3860 [gcc_cv_as_line_zero=no
3861 if test $in_tree_gas = yes; then
3862 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3863 elif test "x$gcc_cv_as" != x; then
3864 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3865 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3866 test "x`cat conftest.out`" = x
3868 gcc_cv_as_line_zero=yes
3870 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3871 cat conftest.s >&AS_MESSAGE_LOG_FD
3872 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3873 cat conftest.out >&AS_MESSAGE_LOG_FD
3875 rm -f conftest.o conftest.s conftest.out
3877 if test "x$gcc_cv_as_line_zero" = xyes; then
3878 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3879 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3882 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3883 gcc_cv_ld_eh_frame_hdr=no
3884 if test $in_tree_ld = yes ; then
3885 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3886 && test $in_tree_ld_is_elf = yes; then
3887 gcc_cv_ld_eh_frame_hdr=yes
3889 elif test x$gcc_cv_ld != x; then
3890 # Check if linker supports --eh-frame-hdr option
3891 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3892 gcc_cv_ld_eh_frame_hdr=yes
3895 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3896 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3897 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3898 [Define if your linker supports --eh-frame-hdr option.])
3900 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3902 AC_MSG_CHECKING(linker position independent executable support)
3904 if test $in_tree_ld = yes ; then
3905 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3906 && test $in_tree_ld_is_elf = yes; then
3909 elif test x$gcc_cv_ld != x; then
3910 # Check if linker supports -pie option
3911 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3915 if test x"$gcc_cv_ld_pie" = xyes; then
3916 AC_DEFINE(HAVE_LD_PIE, 1,
3917 [Define if your linker supports -pie option.])
3919 AC_MSG_RESULT($gcc_cv_ld_pie)
3921 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3922 gcc_cv_ld_eh_gc_sections=no
3923 if test $in_tree_ld = yes ; then
3924 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3925 && test $in_tree_ld_is_elf = yes; then
3926 gcc_cv_ld_eh_gc_sections=yes
3928 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3929 cat > conftest.s <<EOF
3932 .type _start, @function
3935 .size _start, .-_start
3936 .section .text.foo,"ax",@progbits
3937 .type foo, @function
3941 .section .gcc_except_table.foo,"a",@progbits
3944 .section .eh_frame,"a",@progbits
3947 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3948 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3949 | grep "gc-sections option ignored" > /dev/null; then
3950 gcc_cv_ld_eh_gc_sections=no
3951 elif $gcc_cv_objdump -h conftest 2> /dev/null \
3952 | grep gcc_except_table > /dev/null; then
3953 gcc_cv_ld_eh_gc_sections=yes
3954 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3955 if test x$gcc_cv_as_comdat_group != xyes; then
3956 gcc_cv_ld_eh_gc_sections=no
3957 cat > conftest.s <<EOF
3960 .type _start, @function
3963 .size _start, .-_start
3964 .section .gnu.linkonce.t.foo,"ax",@progbits
3965 .type foo, @function
3969 .section .gcc_except_table.foo,"a",@progbits
3972 .section .eh_frame,"a",@progbits
3975 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3976 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3977 | grep "gc-sections option ignored" > /dev/null; then
3978 gcc_cv_ld_eh_gc_sections=no
3979 elif $gcc_cv_objdump -h conftest 2> /dev/null \
3980 | grep gcc_except_table > /dev/null; then
3981 gcc_cv_ld_eh_gc_sections=yes
3987 rm -f conftest.s conftest.o conftest
3991 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3992 gcc_cv_ld_eh_gc_sections=no
3995 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3996 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3997 [Define if your linker supports garbage collection of
3998 sections in presence of EH frames.])
4000 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4006 AC_CACHE_CHECK(linker --as-needed support,
4007 gcc_cv_ld_as_needed,
4008 [gcc_cv_ld_as_needed=no
4009 if test $in_tree_ld = yes ; then
4010 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4011 && test $in_tree_ld_is_elf = yes; then
4012 gcc_cv_ld_as_needed=yes
4014 elif test x$gcc_cv_ld != x; then
4015 # Check if linker supports --as-needed and --no-as-needed options
4016 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4017 gcc_cv_ld_as_needed=yes
4021 if test x"$gcc_cv_ld_as_needed" = xyes; then
4022 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4023 [Define if your linker supports --as-needed and --no-as-needed options.])
4026 case "$target:$tm_file" in
4027 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4028 AC_CACHE_CHECK(linker support for omitting dot symbols,
4029 gcc_cv_ld_no_dot_syms,
4030 [gcc_cv_ld_no_dot_syms=no
4031 if test $in_tree_ld = yes ; then
4032 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4033 gcc_cv_ld_no_dot_syms=yes
4035 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4036 cat > conftest1.s <<EOF
4040 cat > conftest2.s <<EOF
4041 .section ".opd","aw"
4046 .quad .LEfoo,.TOC.@tocbase,0
4052 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4053 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4054 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4055 gcc_cv_ld_no_dot_syms=yes
4057 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4060 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4061 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4062 [Define if your PowerPC64 linker only needs function descriptor syms.])
4065 AC_CACHE_CHECK(linker large toc support,
4066 gcc_cv_ld_large_toc,
4067 [gcc_cv_ld_large_toc=no
4068 if test $in_tree_ld = yes ; then
4069 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4070 gcc_cv_ld_large_toc=yes
4072 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4073 cat > conftest.s <<EOF
4074 .section ".tbss","awT",@nobits
4080 addis 9,13,ie0@got@tprel@ha
4081 ld 9,ie0@got@tprel@l(9)
4083 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4084 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4085 gcc_cv_ld_large_toc=yes
4087 rm -f conftest conftest.o conftest.s
4090 if test x"$gcc_cv_ld_large_toc" = xyes; then
4091 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4092 [Define if your PowerPC64 linker supports a large TOC.])
4097 AC_CACHE_CHECK(linker --build-id support,
4099 [gcc_cv_ld_buildid=no
4100 if test $in_tree_ld = yes ; then
4101 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4102 "$gcc_cv_gld_minor_version" -ge 18 -o \
4103 "$gcc_cv_gld_major_version" -gt 2 \
4104 && test $in_tree_ld_is_elf = yes; then
4105 gcc_cv_ld_buildid=yes
4107 elif test x$gcc_cv_ld != x; then
4108 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4109 gcc_cv_ld_buildid=yes
4112 if test x"$gcc_cv_ld_buildid" = xyes; then
4113 AC_DEFINE(HAVE_LD_BUILDID, 1,
4114 [Define if your linker supports --build-id.])
4117 AC_ARG_ENABLE(linker-build-id,
4118 [ --enable-linker-build-id
4119 compiler will always pass --build-id to linker],
4121 enable_linker_build_id=no)
4123 if test x"$enable_linker_build_id" = xyes; then
4124 if test x"$gcc_cv_ld_buildid" = xyes; then
4125 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4126 [Define if gcc should always pass --build-id to linker.])
4128 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4132 # In binutils 2.21, GNU ld gained support for new emulations fully
4133 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4134 AC_CACHE_CHECK(linker *_sol2 emulation support,
4135 gcc_cv_ld_sol2_emulation,
4136 [gcc_cv_ld_sol2_emulation=no
4137 if test $in_tree_ld = yes ; then
4138 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4139 "$gcc_cv_gld_minor_version" -ge 21 -o \
4140 "$gcc_cv_gld_major_version" -gt 2 \
4141 && test $in_tree_ld_is_elf = yes; then
4142 gcc_cv_ld_sol2_emulation=yes
4144 elif test x$gcc_cv_ld != x; then
4145 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4146 grep _sol2 > /dev/null; then
4147 gcc_cv_ld_sol2_emulation=yes
4150 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4151 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4152 [Define if your linker supports the *_sol2 emulations.])
4155 AC_CACHE_CHECK(linker --sysroot support,
4157 [gcc_cv_ld_sysroot=no
4158 if test $in_tree_ld = yes ; then
4159 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4160 gcc_cv_ld_sysroot=yes
4162 elif test x$gcc_cv_ld != x; then
4163 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4164 gcc_cv_ld_sysroot=yes
4167 if test x"$gcc_cv_ld_sysroot" = xyes; then
4168 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4169 [Define if your linker supports --sysroot.])
4172 if test x$with_sysroot = x && test x$host = x$target \
4173 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4174 && test "$prefix" != "NONE"; then
4175 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4176 [Define to PREFIX/include if cpp should also search that directory.])
4179 # Test for stack protector support in target C library.
4180 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4181 gcc_cv_libc_provides_ssp,
4182 [gcc_cv_libc_provides_ssp=no
4184 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4185 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4186 if test "x$with_headers" != x; then
4187 glibc_header_dir=$with_headers
4188 elif test "x$with_sysroot" = x; then
4189 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4190 elif test "x$with_build_sysroot" != "x"; then
4191 glibc_header_dir="${with_build_sysroot}/usr/include"
4192 elif test "x$with_sysroot" = xyes; then
4193 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4195 glibc_header_dir="${with_sysroot}/usr/include"
4198 glibc_header_dir=/usr/include
4200 [# glibc 2.4 and later provides __stack_chk_fail and
4201 # either __stack_chk_guard, or TLS access to stack guard canary.
4202 if test -f $glibc_header_dir/features.h \
4203 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4204 $glibc_header_dir/features.h > /dev/null; then
4205 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4206 $glibc_header_dir/features.h > /dev/null; then
4207 gcc_cv_libc_provides_ssp=yes
4208 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4209 $glibc_header_dir/features.h > /dev/null \
4210 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4211 $glibc_header_dir/features.h > /dev/null; then
4212 gcc_cv_libc_provides_ssp=yes
4213 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4214 $glibc_header_dir/features.h > /dev/null && \
4215 test -f $glibc_header_dir/bits/uClibc_config.h && \
4216 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4217 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
4218 gcc_cv_libc_provides_ssp=yes
4223 # Avoid complicated tests (see
4224 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4225 # simply assert that glibc does provide this, which is true for all
4226 # realistically usable GNU/Hurd configurations.
4227 gcc_cv_libc_provides_ssp=yes;;
4228 *-*-darwin* | *-*-freebsd*)
4229 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4230 [echo "no __stack_chk_fail on this target"])
4232 *) gcc_cv_libc_provides_ssp=no ;;
4235 if test x$gcc_cv_libc_provides_ssp = xyes; then
4236 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4237 [Define if your target C library provides stack protector support])
4240 # Check if TFmode long double should be used by default or not.
4241 # Some glibc targets used DFmode long double, but with glibc 2.4
4242 # and later they can use TFmode.
4244 powerpc*-*-linux* | \
4249 AC_ARG_WITH(long-double-128,
4250 [ --with-long-double-128 Use 128-bit long double by default.],
4251 gcc_cv_target_ldbl128="$with_long_double_128",
4252 [[gcc_cv_target_ldbl128=no
4253 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4254 if test "x$with_sysroot" = x; then
4255 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4256 elif test "x$with_build_sysroot" != "x"; then
4257 glibc_header_dir="${with_build_sysroot}/usr/include"
4258 elif test "x$with_sysroot" = xyes; then
4259 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4261 glibc_header_dir="${with_sysroot}/usr/include"
4264 glibc_header_dir=/usr/include
4266 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4267 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4268 && gcc_cv_target_ldbl128=yes
4272 if test x$gcc_cv_target_ldbl128 = xyes; then
4273 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4274 [Define if TFmode long double should be the default])
4277 # Find out what GC implementation we want, or may, use.
4279 [ --with-gc={page,zone} choose the garbage collection mechanism to use
4287 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4290 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4295 echo "Using $GGC for garbage collection."
4297 # Libraries to use on the host. This will normally be set by the top
4298 # level Makefile. Here we simply capture the value for our Makefile.
4299 if test -z "${HOST_LIBS+set}"; then
4304 # Use the system's zlib library.
4306 zlibinc="-I\$(srcdir)/../zlib"
4307 AC_ARG_WITH(system-zlib,
4308 [ --with-system-zlib use installed libz],
4315 dnl Very limited version of automake's enable-maintainer-mode
4317 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4318 dnl maintainer-mode is disabled by default
4319 AC_ARG_ENABLE(maintainer-mode,
4320 [ --enable-maintainer-mode
4321 enable make rules and dependencies not useful
4322 (and sometimes confusing) to the casual installer],
4323 maintainer_mode=$enableval,
4326 AC_MSG_RESULT($maintainer_mode)
4328 if test "$maintainer_mode" = "yes"; then
4339 # Make empty files to contain the specs and options for each language.
4340 # Then add #include lines to for a compiler that has specs and/or options.
4346 # These (without "all_") are set in each config-lang.in.
4347 # `language' must be a single word so is spelled singularly.
4350 all_outputs='Makefile gccbug'
4351 # List of language makefile fragments.
4353 # Additional files for gengtype
4354 all_gtfiles="$target_gtfiles"
4356 # These are the languages that are set in --enable-languages,
4357 # and are available in the GCC tree.
4358 all_selected_languages=
4360 # Add the language fragments.
4361 # Languages are added via two mechanisms. Some information must be
4362 # recorded in makefile variables, these are defined in config-lang.in.
4363 # We accumulate them and plug them into the main Makefile.
4364 # The other mechanism is a set of hooks for each of the main targets
4365 # like `clean', `install', etc.
4367 language_hooks="Make-hooks"
4369 for lang in ${srcdir}/*/config-lang.in
4372 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4374 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4375 if test "x$lang_alias" = x
4377 echo "$lang doesn't set \$language." 1>&2
4380 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4381 subdirs="$subdirs $subdir"
4383 # $gcc_subdir is where the gcc integration files are to be found
4384 # for a language, both for internal compiler purposes (compiler
4385 # sources implementing front-end to GCC tree converters), and for
4386 # build infrastructure purposes (Make-lang.in, etc.)
4388 # This will be <subdir> (relative to $srcdir) if a line like
4389 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4390 # is found in <langdir>/config-lang.in, and will remain <langdir>
4393 # Except for the language alias (fetched above), the regular
4394 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4395 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4396 # only this and the language alias.
4398 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4399 if [ "$gcc_subdir" = "" ]; then
4400 gcc_subdir="$subdir"
4403 case ",$enable_languages," in
4405 all_selected_languages="$all_selected_languages $lang_alias"
4406 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4407 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4419 . ${srcdir}/$gcc_subdir/config-lang.in
4420 if test "x$language" = x
4422 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4427 case ",$enable_languages," in
4430 for i in $subdir_requires; do
4431 test -f "${srcdir}/$i/config-lang.in" && continue
4439 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4440 if test -f $srcdir/$gcc_subdir/lang.opt; then
4441 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4443 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4444 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4446 all_languages="$all_languages $language"
4447 all_compilers="$all_compilers $compilers"
4448 all_outputs="$all_outputs $outputs"
4449 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4450 case ",$enable_languages," in
4452 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4454 AC_SUBST(enable_lto)
4455 # LTO needs to speak the platform's object file format, and has a
4456 # number of implementations of the required binary file access APIs.
4457 # ELF is the most common, and default. We only link libelf if ELF
4458 # is indeed the selected format.
4459 LTO_BINARY_READER=${lto_binary_reader}
4460 LTO_USE_LIBELF=-lelf
4461 if test "x$lto_binary_reader" != "xlto-elf" ; then
4464 AC_SUBST(LTO_BINARY_READER)
4465 AC_SUBST(LTO_USE_LIBELF)
4471 # Pick up gtfiles for c
4473 . ${srcdir}/c-config-lang.in
4474 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4477 for language in $all_selected_languages
4479 check_languages="$check_languages check-$language"
4482 # We link each language in with a set of hooks, reached indirectly via
4483 # lang.${target}. Only do so for selected languages.
4487 target_list="all.cross start.encap rest.encap tags \
4488 install-common install-man install-info install-pdf install-html dvi \
4489 pdf html uninstall info man srcextra srcman srcinfo \
4490 mostlyclean clean distclean maintainer-clean install-plugin"
4492 for t in $target_list
4495 for lang in $all_selected_languages
4499 echo "lang.$t: $x" >> Make-hooks
4508 echo "dir ." > .gdbinit
4509 echo "dir ${srcdir}" >> .gdbinit
4510 if test x$gdb_needs_out_file_path = xyes
4512 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4514 if test "x$subdirs" != x; then
4517 echo "dir ${srcdir}/$s" >> .gdbinit
4520 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4522 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4523 AC_SUBST(gcc_tooldir)
4526 # Find a directory in which to install a shared libgcc.
4528 AC_ARG_ENABLE(version-specific-runtime-libs,
4529 [ --enable-version-specific-runtime-libs
4530 specify that runtime libraries should be
4531 installed in a compiler-specific directory])
4533 AC_ARG_WITH(slibdir,
4534 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
4535 slibdir="$with_slibdir",
4536 if test "${enable_version_specific_runtime_libs+set}" = set; then
4537 slibdir='$(libsubdir)'
4538 elif test "$host" != "$target"; then
4539 slibdir='$(build_tooldir)/lib'
4545 # Substitute configuration variables
4548 AC_SUBST(all_compilers)
4549 AC_SUBST(all_gtfiles)
4550 AC_SUBST(all_lang_makefrags)
4551 AC_SUBST(all_languages)
4552 AC_SUBST(all_selected_languages)
4553 AC_SUBST(build_exeext)
4554 AC_SUBST(build_install_headers_dir)
4555 AC_SUBST(build_xm_file_list)
4556 AC_SUBST(build_xm_include_list)
4557 AC_SUBST(build_xm_defines)
4558 AC_SUBST(build_file_translate)
4559 AC_SUBST(check_languages)
4560 AC_SUBST(cpp_install_dir)
4561 AC_SUBST(xmake_file)
4562 AC_SUBST(tmake_file)
4563 AC_SUBST(TM_ENDIAN_CONFIG)
4564 AC_SUBST(TM_MULTILIB_CONFIG)
4565 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4566 AC_SUBST(extra_gcc_objs)
4567 AC_SUBST(user_headers_inc_next_pre)
4568 AC_SUBST(user_headers_inc_next_post)
4569 AC_SUBST(extra_headers_list)
4570 AC_SUBST(extra_objs)
4571 AC_SUBST(extra_parts)
4572 AC_SUBST(extra_passes)
4573 AC_SUBST(extra_programs)
4574 AC_SUBST(float_h_file)
4575 AC_SUBST(gcc_config_arguments)
4576 AC_SUBST(gcc_gxx_include_dir)
4577 AC_SUBST(host_exeext)
4578 AC_SUBST(host_xm_file_list)
4579 AC_SUBST(host_xm_include_list)
4580 AC_SUBST(host_xm_defines)
4581 AC_SUBST(out_host_hook_obj)
4583 AC_SUBST(lang_opt_files)
4584 AC_SUBST(lang_specs_files)
4585 AC_SUBST(lang_tree_files)
4586 AC_SUBST(local_prefix)
4588 AC_SUBST(objc_boehm_gc)
4590 AC_SUBST(out_object_file)
4591 AC_SUBST(thread_file)
4592 AC_SUBST(tm_file_list)
4593 AC_SUBST(tm_include_list)
4594 AC_SUBST(tm_defines)
4595 AC_SUBST(tm_p_file_list)
4596 AC_SUBST(tm_p_include_list)
4597 AC_SUBST(xm_file_list)
4598 AC_SUBST(xm_include_list)
4599 AC_SUBST(xm_defines)
4600 AC_SUBST(use_gcc_stdint)
4601 AC_SUBST(c_target_objs)
4602 AC_SUBST(cxx_target_objs)
4603 AC_SUBST(fortran_target_objs)
4604 AC_SUBST(target_cpu_default)
4606 AC_SUBST_FILE(language_hooks)
4609 if test x${build} = x${host} ; then
4610 if test x${host} = x${target} ; then
4611 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4613 echo "Links are now set up to build a cross-compiler" 1>&2
4614 echo " from ${host} to ${target}." 1>&2
4617 if test x${host} = x${target} ; then
4618 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4619 echo " for ${target}." 1>&2
4621 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4622 echo " from ${host} to ${target}." 1>&2
4626 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4627 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4629 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4630 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4632 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4633 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4634 if test "x${CLOOGLIBS}" != "x" ; then
4635 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4638 AC_ARG_VAR(LIBELFLIBS,[How to link libelf])
4639 AC_ARG_VAR(LIBELFINC,[How to find libelf include files])
4640 if test "x${LIBELFLIBS}" != "x" ; then
4641 AC_DEFINE(HAVE_libelf, 1, [Define if libelf is in use.])
4644 # Check for plugin support
4645 AC_ARG_ENABLE(plugin,
4646 [ --enable-plugin enable plugin support],
4647 enable_plugin=$enableval,
4648 enable_plugin=yes; default_plugin=yes)
4651 if test x"$enable_plugin" = x"yes"; then
4655 export_sym_check="$gcc_cv_nm -g"
4658 export_sym_check="$gcc_cv_objdump -T"
4661 AC_MSG_CHECKING([for exported symbols])
4662 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4663 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4664 if $export_sym_check conftest | grep foobar > /dev/null; then
4665 : # No need to use a flag
4667 AC_MSG_CHECKING([for -rdynamic])
4668 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
4669 if $export_sym_check conftest | grep foobar > /dev/null; then
4671 pluginlibs="-rdynamic"
4676 AC_MSG_RESULT([$plugin_rdynamic])
4681 AC_SEARCH_LIBS([dlopen], [dl])
4682 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
4683 pluginlibs="$pluginlibs -ldl"
4687 # Check that we can build shared objects with -fPIC -shared
4688 saved_LDFLAGS="$LDFLAGS"
4691 LDFLAGS="$LDFLAGS -fPIC -shared -undefined dynamic_lookup"
4694 LDFLAGS="$LDFLAGS -fPIC -shared"
4697 AC_MSG_CHECKING([for -fPIC -shared])
4699 [extern int X;],[return X == 0;],
4700 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
4701 [AC_MSG_RESULT([no]); have_pic_shared=no])
4702 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
4706 LDFLAGS="$saved_LDFLAGS"
4708 # If plugin support had been requested but not available, fail.
4709 if test x"$enable_plugin" = x"no" ; then
4710 if test x"$default_plugin" != x"yes"; then
4712 Building GCC with plugin support requires a host that supports
4713 -fPIC, -shared, -ldl and -rdynamic.])
4718 AC_SUBST(pluginlibs)
4719 AC_SUBST(enable_plugin)
4720 if test x"$enable_plugin" = x"yes"; then
4721 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
4724 # Configure the subdirectories
4725 # AC_CONFIG_SUBDIRS($subdirs)
4727 # Create the Makefile
4728 # and configure language subdirectories
4729 AC_CONFIG_FILES($all_outputs)
4731 AC_CONFIG_COMMANDS([default],
4733 case ${CONFIG_HEADERS} in
4734 *auto-host.h:config.in*)
4737 # Make sure all the subdirs exist.
4738 for d in $subdirs doc build c-family
4740 test -d $d || mkdir $d
4743 [subdirs='$subdirs'])