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 # Windows32 Registry support for specifying GCC installation paths.
1584 AC_ARG_ENABLE(win32-registry,
1585 [ --disable-win32-registry
1586 disable lookup of installation paths in the
1587 Registry on Windows hosts
1588 --enable-win32-registry enable registry lookup (default)
1589 --enable-win32-registry=KEY
1590 use KEY instead of GCC version as the last portion
1591 of the registry key],,)
1594 win32 | pe | cygwin* | mingw32* | uwin*)
1595 if test "x$enable_win32_registry" != xno; then
1596 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1599 if test "x$enable_win32_registry" != xno; then
1600 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1601 [Define to 1 if installation paths should be looked up in the Windows
1602 Registry. Ignored on non-Windows hosts.])
1604 if test "x$enable_win32_registry" != xyes \
1605 && test "x$enable_win32_registry" != x; then
1606 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1607 [Define to be the last component of the Windows registry key under which
1608 to look for installation paths. The full key used will be
1609 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1610 The default is the GCC version number.])
1616 # Get an absolute path to the GCC top-level source directory
1617 holddir=`${PWDCMD-pwd}`
1619 topdir=`${PWDCMD-pwd}`
1622 # Conditionalize the makefile for this host machine.
1624 for f in ${host_xmake_file}
1626 if test -f ${srcdir}/config/$f
1628 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1632 # Conditionalize the makefile for this target machine.
1634 for f in ${tmake_file}
1636 if test -f ${srcdir}/config/$f
1638 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1641 tmake_file="${tmake_file_}"
1643 out_object_file=`basename $out_file .c`.o
1645 tm_file_list="options.h"
1646 tm_include_list="options.h"
1647 for f in $tm_file; do
1650 f=`echo $f | sed 's/^..//'`
1651 tm_file_list="${tm_file_list} $f"
1652 tm_include_list="${tm_include_list} $f"
1655 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1656 tm_include_list="${tm_include_list} $f"
1659 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1660 tm_include_list="${tm_include_list} config/$f"
1667 for f in $tm_p_file; do
1670 tm_p_file_list="${tm_p_file_list} $f"
1671 tm_p_include_list="${tm_p_include_list} $f"
1674 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1675 tm_p_include_list="${tm_p_include_list} config/$f"
1681 for f in $xm_file; do
1684 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1685 xm_include_list="${xm_include_list} $f"
1688 xm_file_list="${xm_file_list} $f"
1689 xm_include_list="${xm_include_list} $f"
1692 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1693 xm_include_list="${xm_include_list} config/$f"
1699 host_xm_include_list=
1700 for f in $host_xm_file; do
1703 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1704 host_xm_include_list="${host_xm_include_list} $f"
1707 host_xm_file_list="${host_xm_file_list} $f"
1708 host_xm_include_list="${host_xm_include_list} $f"
1711 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1712 host_xm_include_list="${host_xm_include_list} config/$f"
1718 for f in $build_xm_file; do
1721 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1722 build_xm_include_list="${build_xm_include_list} $f"
1724 auto-build.h | auto-host.h )
1725 build_xm_file_list="${build_xm_file_list} $f"
1726 build_xm_include_list="${build_xm_include_list} $f"
1729 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1730 build_xm_include_list="${build_xm_include_list} config/$f"
1735 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1736 # cross-compiler which does not use the native headers and libraries.
1737 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1738 CROSS= AC_SUBST(CROSS)
1739 ALL=all.internal AC_SUBST(ALL)
1740 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1742 if test "x$with_build_sysroot" != x; then
1743 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1745 # This value is used, even on a native system, because
1746 # CROSS_SYSTEM_HEADER_DIR is just
1747 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1748 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1751 if test x$host != x$target
1753 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1755 SYSTEM_HEADER_DIR=$build_system_header_dir
1756 case "$host","$target" in
1757 # Darwin crosses can use the host system's libraries and headers,
1758 # because of the fat library support. Of course, it must be the
1759 # same version of Darwin on both sides. Allow the user to
1760 # just say --target=foo-darwin without a version number to mean
1761 # "the version on this system".
1762 *-*-darwin*,*-*-darwin*)
1763 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1764 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1765 if test $hostos = $targetos -o $targetos = darwin ; then
1767 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1772 i?86-*-*,x86_64-*-* \
1773 | powerpc*-*-*,powerpc64*-*-*)
1774 CROSS="$CROSS -DNATIVE_CROSS" ;;
1776 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1777 SYSTEM_HEADER_DIR=$build_system_header_dir
1780 # If this is a cross-compiler that does not
1781 # have its own set of headers then define
1784 # If this is using newlib, without having the headers available now,
1785 # then define inhibit_libc in LIBGCC2_CFLAGS.
1786 # This prevents libgcc2 from containing any code which requires libc
1788 : ${inhibit_libc=false}
1789 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1790 test x$with_newlib = xyes ; } &&
1791 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1794 AC_SUBST(inhibit_libc)
1796 # When building gcc with a cross-compiler, we need to adjust things so
1797 # that the generator programs are still built with the native compiler.
1798 # Also, we cannot run fixincludes.
1800 # These are the normal (build=host) settings:
1801 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1802 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1803 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1804 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1806 # And these apply if build != host, or we are generating coverage data
1807 if test x$build != x$host || test "x$coverage_flags" != x
1809 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1810 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1813 # Expand extra_headers to include complete path.
1814 # This substitutes for lots of t-* files.
1816 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1817 for file in ${extra_headers} ; do
1818 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1821 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1822 if test x"$use_gcc_tgmath" = xyes
1823 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1826 # Define collect2 in Makefile.
1827 case $host_can_use_collect2 in
1829 *) collect2='collect2$(exeext)' ;;
1831 AC_SUBST([collect2])
1833 # Add a definition of USE_COLLECT2 if system wants one.
1834 case $use_collect2 in
1835 no) use_collect2= ;;
1838 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1839 xm_defines="${xm_defines} USE_COLLECT2"
1840 case $host_can_use_collect2 in
1842 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1848 # ---------------------------
1849 # Assembler & linker features
1850 # ---------------------------
1852 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1853 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1854 # However when ld-new is first executed from the build tree, libtool will
1855 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1856 # to the build tree. While doing this we need to use the previous-stage
1857 # linker, or we have an infinite loop. The presence of a shell script as
1858 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1859 # the gcc/collect-ld script. So we need to know how libtool works, or
1860 # exec-tool will fail.
1862 m4_defun([_LT_CONFIG_COMMANDS], [])
1865 AC_SUBST(enable_fast_install)
1867 # Identify the assembler which will work hand-in-glove with the newly
1868 # built GCC, so that we can examine its features. This is the assembler
1869 # which will be driven by the driver program.
1871 # If build != host, and we aren't building gas in-tree, we identify a
1872 # build->target assembler and hope that it will have the same features
1873 # as the host->target assembler we'll be using.
1874 gcc_cv_gas_major_version=
1875 gcc_cv_gas_minor_version=
1876 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1878 m4_pattern_allow([AS_FOR_TARGET])dnl
1879 AS_VAR_SET_IF(gcc_cv_as,, [
1880 if test -x "$DEFAULT_ASSEMBLER"; then
1881 gcc_cv_as="$DEFAULT_ASSEMBLER"
1882 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1883 && test -f ../gas/Makefile \
1884 && test x$build = x$host; then
1885 gcc_cv_as=../gas/as-new$build_exeext
1886 elif test -x as$build_exeext; then
1887 # Build using assembler in the current directory.
1888 gcc_cv_as=./as$build_exeext
1889 elif test -x $AS_FOR_TARGET; then
1890 gcc_cv_as="$AS_FOR_TARGET"
1892 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1895 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1896 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1897 case "$ORIGINAL_AS_FOR_TARGET" in
1898 ./as | ./as$build_exeext) ;;
1899 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1902 AC_MSG_CHECKING(what assembler to use)
1903 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1904 # Single tree build which includes gas. We want to prefer it
1905 # over whatever linker top-level may have detected, since
1906 # we'll use what we're building after installation anyway.
1907 AC_MSG_RESULT(newly built gas)
1909 _gcc_COMPUTE_GAS_VERSION
1910 in_tree_gas_is_elf=no
1911 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1912 || (grep 'obj_format = multi' ../gas/Makefile \
1913 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1915 in_tree_gas_is_elf=yes
1918 AC_MSG_RESULT($gcc_cv_as)
1922 # Identify the linker which will work hand-in-glove with the newly
1923 # built GCC, so that we can examine its features. This is the linker
1924 # which will be driven by the driver program.
1926 # If build != host, and we aren't building gas in-tree, we identify a
1927 # build->target linker and hope that it will have the same features
1928 # as the host->target linker we'll be using.
1929 gcc_cv_gld_major_version=
1930 gcc_cv_gld_minor_version=
1931 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1932 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1934 AS_VAR_SET_IF(gcc_cv_ld,, [
1935 if test -x "$DEFAULT_LINKER"; then
1936 gcc_cv_ld="$DEFAULT_LINKER"
1937 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1938 && test -f ../ld/Makefile \
1939 && test x$build = x$host; then
1940 gcc_cv_ld=../ld/ld-new$build_exeext
1941 elif test -x collect-ld$build_exeext; then
1942 # Build using linker in the current directory.
1943 gcc_cv_ld=./collect-ld$build_exeext
1944 elif test -x $LD_FOR_TARGET; then
1945 gcc_cv_ld="$LD_FOR_TARGET"
1947 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1950 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1951 PLUGIN_LD=`basename $gcc_cv_ld`
1952 AC_ARG_WITH(plugin-ld,
1953 [ --with-plugin-ld=[[ARG]] specify the plugin linker],
1954 [if test x"$withval" != x; then
1955 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1956 PLUGIN_LD="$withval"
1958 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1959 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1961 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1962 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1963 case "$ORIGINAL_LD_FOR_TARGET" in
1964 ./collect-ld | ./collect-ld$build_exeext) ;;
1965 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1968 AC_MSG_CHECKING(what linker to use)
1969 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1970 # Single tree build which includes ld. We want to prefer it
1971 # over whatever linker top-level may have detected, since
1972 # we'll use what we're building after installation anyway.
1973 AC_MSG_RESULT(newly built ld)
1975 in_tree_ld_is_elf=no
1976 if (grep 'EMUL = .*elf' ../ld/Makefile \
1977 || grep 'EMUL = .*linux' ../ld/Makefile \
1978 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1979 in_tree_ld_is_elf=yes
1981 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
1984 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1985 if test x$gcc_cv_gld_version != x; then
1989 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1990 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1993 AC_MSG_RESULT($gcc_cv_ld)
1997 # Figure out what nm we will be using.
1998 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1999 AS_VAR_SET_IF(gcc_cv_nm,, [
2000 if test -f $gcc_cv_binutils_srcdir/configure.in \
2001 && test -f ../binutils/Makefile \
2002 && test x$build = x$host; then
2003 gcc_cv_nm=../binutils/nm-new$build_exeext
2004 elif test -x nm$build_exeext; then
2005 gcc_cv_nm=./nm$build_exeext
2006 elif test -x $NM_FOR_TARGET; then
2007 gcc_cv_nm="$NM_FOR_TARGET"
2009 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2012 AC_MSG_CHECKING(what nm to use)
2013 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2014 # Single tree build which includes binutils.
2015 AC_MSG_RESULT(newly built nm)
2018 AC_MSG_RESULT($gcc_cv_nm)
2022 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2023 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2024 case "$ORIGINAL_NM_FOR_TARGET" in
2025 ./nm | ./nm$build_exeext) ;;
2026 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2030 # Figure out what objdump we will be using.
2031 AS_VAR_SET_IF(gcc_cv_objdump,, [
2032 if test -f $gcc_cv_binutils_srcdir/configure.in \
2033 && test -f ../binutils/Makefile \
2034 && test x$build = x$host; then
2035 # Single tree build which includes binutils.
2036 gcc_cv_objdump=../binutils/objdump$build_exeext
2037 elif test -x objdump$build_exeext; then
2038 gcc_cv_objdump=./objdump$build_exeext
2039 elif test -x $OBJDUMP_FOR_TARGET; then
2040 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2042 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2045 AC_MSG_CHECKING(what objdump to use)
2046 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2047 # Single tree build which includes binutils.
2048 AC_MSG_RESULT(newly built objdump)
2049 elif test x$gcc_cv_objdump = x; then
2050 AC_MSG_RESULT(not found)
2052 AC_MSG_RESULT($gcc_cv_objdump)
2055 # Figure out what readelf we will be using.
2056 AS_VAR_SET_IF(gcc_cv_readelf,, [
2057 if test -f $gcc_cv_binutils_srcdir/configure.in \
2058 && test -f ../binutils/Makefile \
2059 && test x$build = x$host; then
2060 # Single tree build which includes binutils.
2061 gcc_cv_readelf=../binutils/readelf$build_exeext
2062 elif test -x readelf$build_exeext; then
2063 gcc_cv_readelf=./readelf$build_exeext
2065 AC_PATH_PROG(gcc_cv_readelf, readelf)
2068 AC_MSG_CHECKING(what readelf to use)
2069 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2070 # Single tree build which includes binutils.
2071 AC_MSG_RESULT(newly built readelf)
2072 elif test x$gcc_cv_readelf = x; then
2073 AC_MSG_RESULT(not found)
2075 AC_MSG_RESULT($gcc_cv_readelf)
2078 # Figure out what assembler alignment features are present.
2079 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2083 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2084 [Define if your assembler supports .balign and .p2align.])])
2086 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2089 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2090 [Define if your assembler supports specifying the maximum number
2091 of bytes to skip when using the GAS .p2align command.])])
2093 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2096 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2097 [Define if your assembler supports .literal16.])])
2099 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2101 [conftest_label1: .word 0
2103 conftest_label2: .word 0
2105 [if test x$gcc_cv_nm != x; then
2106 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2107 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2108 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2110 else gcc_cv_as_subsection_m1=yes
2112 rm -f conftest.nm1 conftest.nm2
2114 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2115 [Define if your assembler supports .subsection and .subsection -1 starts
2116 emitting at the beginning of your section.])])
2118 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2121 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2123 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2125 [ .weakref foobar, barfnot],,
2126 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2128 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2131 .NSUBSPA $CODE$,COMDAT],,
2132 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2134 # .hidden needs to be supported in both the assembler and the linker,
2135 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2136 # This is irritatingly difficult to feature test for; we have to check the
2137 # date string after the version number. If we've got an in-tree
2138 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2140 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2141 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2145 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2146 # STV_HIDDEN, so disable .hidden support if so.
2149 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2150 cat > conftest.s <<EOF
2157 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2158 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2159 grep '\.hidden default' > /dev/null; then
2162 gcc_cv_as_hidden=yes
2165 # Assume bug is present if objdump is missing.
2170 gcc_cv_as_hidden=yes
2175 if test $in_tree_ld != yes ; then
2176 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2177 if echo "$ld_ver" | grep GNU > /dev/null; then
2178 ld_vers=`echo $ld_ver | sed -n \
2179 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2180 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2181 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2182 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2183 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2188 # Solaris 2 ld -V output looks like this for a regular version:
2190 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2192 # but test versions add stuff at the end:
2194 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2196 ld_ver=`$gcc_cv_ld -V 2>&1`
2197 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2198 ld_vers=`echo $ld_ver | sed -n \
2199 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2200 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2201 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2209 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2210 [[if test $in_tree_ld = yes ; then
2212 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2213 && test $in_tree_ld_is_elf = yes; then
2214 gcc_cv_ld_hidden=yes
2217 gcc_cv_ld_hidden=yes
2218 if echo "$ld_ver" | grep GNU > /dev/null; then
2219 if test 0"$ld_date" -lt 20020404; then
2220 if test -n "$ld_date"; then
2221 # If there was date string, but was earlier than 2002-04-04, fail
2223 elif test -z "$ld_vers"; then
2224 # If there was no date string nor ld version number, something is wrong
2227 test -z "$ld_vers_patch" && ld_vers_patch=0
2228 if test "$ld_vers_major" -lt 2; then
2230 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2231 gcc_cv_ld_hidden="no"
2232 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2239 hppa64*-*-hpux* | ia64*-*-hpux*)
2240 gcc_cv_ld_hidden=yes
2242 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2243 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2244 # .symbolic was only added in Solaris 9 12/02.
2245 gcc_cv_ld_hidden=yes
2253 libgcc_visibility=no
2254 AC_SUBST(libgcc_visibility)
2255 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2256 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2257 libgcc_visibility=yes
2258 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2259 [Define if your assembler and linker support .hidden.])
2262 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2263 gcc_cv_ld_ro_rw_mix=unknown
2264 if test $in_tree_ld = yes ; then
2265 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2266 && test $in_tree_ld_is_elf = yes; then
2267 gcc_cv_ld_ro_rw_mix=read-write
2269 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2270 echo '.section myfoosect, "a"' > conftest1.s
2271 echo '.section myfoosect, "aw"' > conftest2.s
2272 echo '.byte 1' >> conftest2.s
2273 echo '.section myfoosect, "a"' > conftest3.s
2274 echo '.byte 0' >> conftest3.s
2275 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2276 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2277 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2278 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2279 conftest2.o conftest3.o > /dev/null 2>&1; then
2280 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2281 | sed -e '/myfoosect/!d' -e N`
2282 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2283 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2284 gcc_cv_ld_ro_rw_mix=read-only
2286 gcc_cv_ld_ro_rw_mix=read-write
2291 rm -f conftest.* conftest[123].*
2294 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2295 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2296 [Define if your linker links a mix of read-only
2297 and read-write sections into a read-write section.])
2299 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2301 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2302 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2310 [[# GAS versions before 2.11 do not support uleb128,
2311 # despite appearing to.
2312 # ??? There exists an elf-specific test that will crash
2313 # the assembler. Perhaps it's better to figure out whether
2314 # arbitrary sections are supported and try the test.
2315 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2316 if echo "$as_ver" | grep GNU > /dev/null; then
2317 as_vers=`echo $as_ver | sed -n \
2318 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2319 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2320 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2321 if test $as_major -eq 2 && test $as_minor -lt 11
2323 else gcc_cv_as_leb128=yes
2326 [AC_DEFINE(HAVE_AS_LEB128, 1,
2327 [Define if your assembler supports .sleb128 and .uleb128.])])
2329 # Check if we have assembler support for unwind directives.
2330 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2337 .cfi_escape 1, 2, 3, 4, 5
2341 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2342 # read-only and read-write sections, we need to make sure that the
2343 # assembler used emits read-write .eh_frame sections.
2344 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2345 if test "x$gcc_cv_objdump" != x; then
2346 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2347 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2348 gcc_cv_as_cfi_directive=no
2351 i?86-*-solaris2.1[[0-9]]*)
2352 # On Solaris/x86, make sure that GCC and gas agree on using
2353 # read-only .eh_frame sections for 64-bit.
2354 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2355 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2356 sed -e /.eh_frame/!d -e N | \
2357 grep READONLY > /dev/null; then
2358 gcc_cv_as_cfi_directive=yes
2360 gcc_cv_as_cfi_directive=no
2364 gcc_cv_as_cfi_directive=yes
2369 # no objdump, err on the side of caution
2370 gcc_cv_as_cfi_directive=no
2373 gcc_cv_as_cfi_directive=yes
2377 gcc_cv_as_cfi_directive=yes
2380 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_readelf != x; then
2381 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2385 .cfi_adjust_cfa_offset 64
2387 .cfi_adjust_cfa_offset 128
2390 if $gcc_cv_readelf -wf conftest.o 2>/dev/null \
2391 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2392 gcc_cv_as_cfi_advance_working=yes
2396 # no readelf, err on the side of caution
2397 gcc_cv_as_cfi_advance_working=no
2399 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2400 [`if test $gcc_cv_as_cfi_directive = yes \
2401 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2402 [Define 0/1 if your assembler supports CFI directives.])
2404 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2405 gcc_cv_as_cfi_personality_directive, ,,
2408 .cfi_personality 0, symbol
2410 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2411 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2412 then echo 1; else echo 0; fi`],
2413 [Define 0/1 if your assembler supports .cfi_personality.])
2415 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2416 gcc_cv_as_cfi_sections_directive, ,,
2418 .cfi_sections .debug_frame, .eh_frame
2421 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2422 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2423 then echo 1; else echo 0; fi`],
2424 [Define 0/1 if your assembler supports .cfi_sections.])
2426 # GAS versions up to and including 2.11.0 may mis-optimize
2428 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2436 .section .eh_frame,"aw",@progbits
2438 .4byte .LECIE1-.LSCIE1
2452 .4byte .LEFDE1-.LASFDE1
2454 .4byte .LASFDE1-__FRAME_BEGIN__
2462 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2463 cat > conftest.lit <<EOF
2464 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2465 0010 01000000 12000000 18000000 00000000 ................
2466 0020 08000000 04080000 0044 .........D @&t@
2468 cat > conftest.big <<EOF
2469 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2470 0010 00000001 00000012 00000018 00000000 ................
2471 0020 00000008 04000000 0844 .........D @&t@
2473 # If the assembler didn't choke, and we can objdump,
2474 # and we got the correct data, then succeed.
2475 # The text in the here-document typically retains its unix-style line
2476 # endings, while the output of objdump will use host line endings.
2477 # Therefore, use diff -b for the comparisons.
2478 if test x$gcc_cv_objdump != x \
2479 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2480 | tail -3 > conftest.got \
2481 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2482 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2484 gcc_cv_as_eh_frame=yes
2485 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2486 gcc_cv_as_eh_frame=buggy
2488 # Uh oh, what do we do now?
2489 gcc_cv_as_eh_frame=no
2492 if test $gcc_cv_as_eh_frame = buggy; then
2493 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2494 [Define if your assembler mis-optimizes .eh_frame data.])
2497 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2498 [elf,2,12,0], [--fatal-warnings],
2499 [.section .rodata.str, "aMS", @progbits, 1])
2500 if test $gcc_cv_as_shf_merge = no; then
2501 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2502 [elf,2,12,0], [--fatal-warnings],
2503 [.section .rodata.str, "aMS", %progbits, 1])
2505 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2506 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2507 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2509 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2510 [elf,2,16,0], [--fatal-warnings],
2511 [.section .text,"axG",@progbits,.foo,comdat])
2512 if test $gcc_cv_as_comdat_group = yes; then
2513 gcc_cv_as_comdat_group_percent=no
2515 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2516 [elf,2,16,0], [--fatal-warnings],
2517 [.section .text,"axG",%progbits,.foo,comdat])
2519 if test $in_tree_ld = yes ; then
2521 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2522 && test $in_tree_ld_is_elf = yes; then
2525 elif echo "$ld_ver" | grep GNU > /dev/null; then
2527 if test 0"$ld_date" -lt 20050308; then
2528 if test -n "$ld_date"; then
2529 # If there was date string, but was earlier than 2005-03-08, fail
2531 elif test "$ld_vers_major" -lt 2; then
2533 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2540 *-*-solaris2.1[1-9]*)
2541 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2542 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2545 # FIXME: Maybe need to refine later when COMDAT group support with
2546 # Sun as is implemented.
2547 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 1688; then
2554 # Assume linkers other than GNU ld don't support COMDAT group.
2560 # Allow overriding the automatic COMDAT group tests above.
2561 AC_ARG_ENABLE(comdat,
2562 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2563 [comdat_group="$enable_comdat"])
2564 if test $comdat_group = no; then
2565 gcc_cv_as_comdat_group=no
2566 gcc_cv_as_comdat_group_percent=no
2568 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2569 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2570 [Define 0/1 if your assembler and linker support COMDAT groups.])
2572 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2573 gcc_cv_as_discriminator,
2577 .loc 1 1 0 discriminator 1],,
2578 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2579 [Define if your assembler supports the .loc discriminator sub-directive.])])
2581 # Thread-local storage - the check is heavily parameterized.
2590 .section ".tdata","awT",@progbits
2593 ldq $27,__tls_get_addr($29) !literal!1
2594 lda $16,foo($29) !tlsgd!1
2595 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2596 ldq $27,__tls_get_addr($29) !literal!2
2597 lda $16,foo($29) !tlsldm!2
2598 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2599 ldq $1,foo($29) !gotdtprel
2600 ldah $2,foo($29) !dtprelhi
2601 lda $3,foo($2) !dtprello
2602 lda $4,foo($29) !dtprel
2603 ldq $1,foo($29) !gottprel
2604 ldah $2,foo($29) !tprelhi
2605 lda $3,foo($2) !tprello
2606 lda $4,foo($29) !tprel'
2609 tls_as_opt=--fatal-warnings
2611 cris-*-*|crisv32-*-*)
2613 .section ".tdata","awT",@progbits
2620 tls_as_opt=--fatal-warnings
2624 .section ".tdata","awT",@progbits
2636 .section ".tdata","awT",@progbits
2640 addil LT%foo-$tls_gdidx$,gp
2641 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2644 addil LT%foo-$tls_ldidx$,gp
2646 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2647 addil LR%foo-$tls_dtpoff$,%ret0
2648 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2650 addil LT%foo-$tls_ieoff$,gp
2651 ldw RT%foo-$tls_ieoff$(%r1),%t2
2654 addil LR%foo-$tls_leoff$,%t1
2655 ldo RR%foo-$tls_leoff$(%r1),%t2'
2658 tls_as_opt=--fatal-warnings
2662 .section ".tdata","awT",%progbits
2675 i[34567]86-*-solaris2.[56789]*)
2676 # TLS was introduced in the Solaris 9 4/04 release but
2677 # we do not enable it by default on Solaris 9 either.
2678 if test "x$enable_tls" = xyes ; then
2684 i[34567]86-*-solaris2.*)
2691 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2693 .section .tdata,"awt",@progbits'
2697 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2698 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2702 .section ".tdata","awT",@progbits'
2705 tls_as_opt="--fatal-warnings"
2707 conftest_s="$conftest_s
2711 leal foo@tlsgd(,%ebx,1), %eax
2712 leal foo@tlsldm(%ebx), %eax
2713 leal foo@dtpoff(%eax), %edx
2714 movl foo@gottpoff(%ebx), %eax
2715 subl foo@gottpoff(%ebx), %eax
2716 addl foo@gotntpoff(%ebx), %eax
2717 movl foo@indntpoff, %eax
2718 movl \$foo@tpoff, %eax
2719 subl \$foo@tpoff, %eax
2720 leal foo@ntpoff(%ecx), %eax"
2724 .section ".tdata","awT",@progbits
2728 leaq foo@TLSGD(%rip), %rdi
2729 leaq foo@TLSLD(%rip), %rdi
2730 leaq foo@DTPOFF(%rax), %rdx
2731 movq foo@GOTTPOFF(%rip), %rax
2732 movq $foo@TPOFF, %rax'
2735 tls_as_opt=--fatal-warnings
2739 .section ".tdata","awT",@progbits
2742 addl r16 = @ltoff(@dtpmod(foo#)), gp
2743 addl r17 = @ltoff(@dtprel(foo#)), gp
2744 addl r18 = @ltoff(@tprel(foo#)), gp
2745 addl r19 = @dtprel(foo#), gp
2746 adds r21 = @dtprel(foo#), r13
2747 movl r23 = @dtprel(foo#)
2748 addl r20 = @tprel(foo#), gp
2749 adds r22 = @tprel(foo#), r13
2750 movl r24 = @tprel(foo#)'
2753 tls_as_opt=--fatal-warnings
2757 .section .tdata,"awT",@progbits
2761 addiu $4, $28, %tlsgd(x)
2762 addiu $4, $28, %tlsldm(x)
2763 lui $4, %dtprel_hi(x)
2764 addiu $4, $4, %dtprel_lo(x)
2765 lw $4, %gottprel(x)($28)
2766 lui $4, %tprel_hi(x)
2767 addiu $4, $4, %tprel_lo(x)'
2770 tls_as_opt='-32 --fatal-warnings'
2774 .section .tdata,"awT",@progbits
2779 move.l x@TLSGD(%a5),%a0
2780 move.l x@TLSLDM(%a5),%a0
2781 move.l x@TLSLDO(%a5),%a0
2782 move.l x@TLSIE(%a5),%a0
2783 move.l x@TLSLE(%a5),%a0'
2786 tls_as_opt='--fatal-warnings'
2790 .section ".tdata","awT",@progbits
2798 addi 3,31,ld0@got@tlsgd
2800 addi 3,31,x1@got@tlsld
2803 addis 9,3,x2@dtprel@ha
2804 addi 9,9,x2@dtprel@l
2805 lwz 9,x3@got@tprel(31)
2808 addis 9,2,x2@tprel@ha
2809 addi 9,9,x2@tprel@l'
2812 tls_as_opt="-a32 --fatal-warnings"
2816 .section ".tdata","awT",@progbits
2824 addi 3,2,ld0@got@tlsgd
2830 addi 3,2,x1@got@tlsld
2836 addis 9,3,x2@dtprel@ha
2837 addi 9,9,x2@dtprel@l
2840 ld 9,x3@got@dtprel(2)
2846 tls_as_opt="-a64 --fatal-warnings"
2850 .section ".tdata","awT",@progbits
2859 l %r1,foo@GOTNTPOFF(%r12)
2860 l %r1,0(%r1):tls_load:foo
2861 bas %r14,0(%r1,%r13):tls_gdcall:foo
2862 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2865 tls_as_opt="-m31 --fatal-warnings"
2869 .section ".tdata","awT",@progbits
2877 lg %r1,foo@GOTNTPOFF(%r12)
2878 larl %r1,foo@INDNTPOFF
2879 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2880 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2883 tls_as_opt="-m64 -Aesame --fatal-warnings"
2885 sh-*-* | sh[34]-*-*)
2887 .section ".tdata","awT",@progbits
2897 tls_as_opt=--fatal-warnings
2901 sparc*-sun-solaris2.[56789]*)
2902 # TLS was introduced in the Solaris 9 4/04 release but
2903 # we do not enable it by default on Solaris 9 either.
2904 if test "x$enable_tls" = xyes ; then
2910 sparc*-sun-solaris2.*)
2917 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2919 .section ".tdata",#alloc,#write,#tls
2922 sethi %tgd_hi22(foo), %o0
2923 add %o0, %tgd_lo10(foo), %o1
2924 add %l7, %o1, %o0, %tgd_add(foo)
2925 call __tls_get_addr, %tgd_call(foo)
2926 sethi %tldm_hi22(foo), %l1
2927 add %l1, %tldm_lo10(foo), %l2
2928 add %l7, %l2, %o0, %tldm_add(foo)
2929 call __tls_get_addr, %tldm_call(foo)
2930 sethi %tldo_hix22(foo), %l3
2931 xor %l3, %tldo_lox10(foo), %l4
2932 add %o0, %l4, %l5, %tldo_add(foo)
2933 sethi %tie_hi22(foo), %o3
2934 add %o3, %tie_lo10(foo), %o3
2935 ld [%l7 + %o3], %o2, %tie_ld(foo)
2936 add %g7, %o2, %o4, %tie_add(foo)
2937 sethi %tle_hix22(foo), %l1
2938 xor %l1, %tle_lox10(foo), %o5
2939 ld [%g7 + %o5], %o1'
2944 .section ".tdata","awT",@progbits
2947 sethi %tgd_hi22(foo), %o0
2948 add %o0, %tgd_lo10(foo), %o1
2949 add %l7, %o1, %o0, %tgd_add(foo)
2950 call __tls_get_addr, %tgd_call(foo)
2951 sethi %tldm_hi22(foo), %l1
2952 add %l1, %tldm_lo10(foo), %l2
2953 add %l7, %l2, %o0, %tldm_add(foo)
2954 call __tls_get_addr, %tldm_call(foo)
2955 sethi %tldo_hix22(foo), %l3
2956 xor %l3, %tldo_lox10(foo), %l4
2957 add %o0, %l4, %l5, %tldo_add(foo)
2958 sethi %tie_hi22(foo), %o3
2959 add %o3, %tie_lo10(foo), %o3
2960 ld [%l7 + %o3], %o2, %tie_ld(foo)
2961 add %g7, %o2, %o4, %tie_add(foo)
2962 sethi %tle_hix22(foo), %l1
2963 xor %l1, %tle_lox10(foo), %o5
2964 ld [%g7 + %o5], %o1'
2967 tls_as_opt="-32 --fatal-warnings"
2972 .section ".tdata","awT",@progbits
2975 movi a8, foo@TLSFUNC
2976 movi a10, foo@TLSARG
2977 callx8.tls a8, foo@TLSCALL'
2984 if test "x$enable_tls" = xno ; then
2985 : # TLS explicitly disabled.
2986 elif test "x$enable_tls" = xyes ; then
2987 set_have_as_tls=yes # TLS explicitly enabled.
2988 elif test -z "$tls_first_major"; then
2989 : # If we don't have a check, assume no support.
2991 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2992 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2993 [set_have_as_tls=yes])
2995 if test $set_have_as_tls = yes ; then
2996 AC_DEFINE(HAVE_AS_TLS, 1,
2997 [Define if your assembler supports thread-local storage.])
3000 # Target-specific assembler checks.
3002 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3003 gcc_cv_ld_static_dynamic=no
3004 if test $in_tree_ld = yes ; then
3005 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3006 gcc_cv_ld_static_dynamic=yes
3008 elif test x$gcc_cv_ld != x; then
3009 # Check if linker supports -Bstatic/-Bdynamic option
3010 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3011 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3012 gcc_cv_ld_static_dynamic=yes
3015 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3016 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3017 [Define if your linker supports -Bstatic/-Bdynamic option.])
3019 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3021 if test x"$demangler_in_ld" = xyes; then
3022 AC_MSG_CHECKING(linker --demangle support)
3023 gcc_cv_ld_demangle=no
3024 if test $in_tree_ld = yes; then
3025 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3026 gcc_cv_ld_demangle=yes
3028 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3029 # Check if the GNU linker supports --demangle option
3030 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3031 gcc_cv_ld_demangle=yes
3034 if test x"$gcc_cv_ld_demangle" = xyes; then
3035 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3036 [Define if your linker supports --demangle option.])
3038 AC_MSG_RESULT($gcc_cv_ld_demangle)
3042 # All TARGET_ABI_OSF targets.
3043 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3044 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3045 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3048 extbl $3, $2, $3 !lituse_bytoff!1
3049 ldq $2, a($29) !literal!1
3050 ldq $4, b($29) !literal!2
3051 ldq_u $3, 0($2) !lituse_base!1
3052 ldq $27, f($29) !literal!5
3053 jsr $26, ($27), f !lituse_jsr!5
3054 ldah $29, 0($26) !gpdisp!3
3055 lda $0, c($29) !gprel
3056 ldah $1, d($29) !gprelhigh
3057 lda $1, d($1) !gprellow
3058 lda $29, 0($29) !gpdisp!3],,
3059 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3060 [Define if your assembler supports explicit relocations.])])
3061 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3062 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3065 ldq $27, a($29) !literal!1
3066 jsr $26, ($27), a !lituse_jsrdirect!1],,
3067 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3068 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3072 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3073 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3074 [-no-mul-bug-abort], [.text],,
3075 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3076 [Define if your assembler supports the -no-mul-bug-abort option.])])
3080 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3081 [.register %g2, #scratch],,
3082 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3083 [Define if your assembler supports .register.])])
3085 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3087 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3088 [Define if your assembler supports -relax option.])])
3090 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3091 gcc_cv_as_sparc_gotdata_op,,
3097 sethi %gdop_hix22(foo), %g1
3098 xor %g1, %gdop_lox10(foo), %g1
3099 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3100 [if test x$gcc_cv_ld != x \
3101 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3102 if $gcc_cv_ld -v | grep GNU >/dev/null 2>&1; then
3103 if test x$gcc_cv_objdump != x; then
3104 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3105 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3106 gcc_cv_as_sparc_gotdata_op=no
3108 gcc_cv_as_sparc_gotdata_op=yes
3112 gcc_cv_as_sparc_gotdata_op=yes
3116 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3117 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3119 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3120 gcc_cv_as_sparc_ua_pcrel,,
3128 .uaword %r_disp32(foo)],
3129 [if test x$gcc_cv_ld != x \
3130 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3131 gcc_cv_as_sparc_ua_pcrel=yes
3134 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3135 [Define if your assembler and linker support unaligned PC relative relocs.])
3137 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3138 gcc_cv_as_sparc_ua_pcrel_hidden,,
3143 .uaword %r_disp32(foo)
3144 .byte 0x32, 0x33, 0x34
3149 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3150 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3151 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3152 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3153 if $gcc_cv_objdump -R conftest 2> /dev/null \
3154 | grep 'DISP32' > /dev/null 2>&1; then
3157 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3161 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3162 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3163 ]) # unaligned pcrel relocs
3165 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3166 gcc_cv_as_sparc_offsetable_lo10,,
3169 or %g1, %lo(ab) + 12, %g1
3170 or %g1, %lo(ab + 12), %g1],
3171 [if test x$gcc_cv_objdump != x \
3172 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3173 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3174 gcc_cv_as_sparc_offsetable_lo10=yes
3176 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3177 [Define if your assembler supports offsetable %lo().])])
3181 i[34567]86-*-* | x86_64-*-*)
3185 # Full C++ conformance when using a shared libstdc++-v3 requires some
3186 # support from the Cygwin DLL, which in more recent versions exports
3187 # wrappers to aid in interposing and redirecting operators new, delete,
3188 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3189 # are configuring for a version of Cygwin that exports the wrappers.
3190 if test x$host = x$target; then
3191 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3193 # Can't check presence of libc functions during cross-compile, so
3194 # we just have to assume we're building for an up-to-date target.
3195 gcc_ac_cygwin_dll_wrappers=yes
3197 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3198 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3199 [Define if you want to generate code by default that assumes that the
3200 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3203 cygwin* | pe | mingw32*)
3204 # Recent binutils allows the three-operand form of ".comm" on PE. This
3205 # definition is used unconditionally to initialise the default state of
3206 # the target option variable that governs usage of the feature.
3207 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3208 [2,19,52],,[.comm foo,1,32])
3209 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3210 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3211 [Define if your assembler supports specifying the alignment
3212 of objects allocated using the GAS .comm command.])
3213 # Used for DWARF 2 in PE
3214 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3215 gcc_cv_as_ix86_pe_secrel32,
3221 [if test x$gcc_cv_ld != x \
3222 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3223 gcc_cv_as_ix86_pe_secrel32=yes
3226 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3227 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3228 # Test if the assembler supports the extended form of the .section
3229 # directive that specifies section alignment. LTO support uses this,
3230 # but normally only after installation, so we warn but don't fail the
3231 # configure if LTO is enabled but the assembler does not support it.
3232 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3233 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3234 if test x$gcc_cv_as_section_has_align != xyes; then
3235 case ",$enable_languages," in
3237 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3244 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3245 gcc_cv_as_ix86_filds,,,
3246 [filds mem; fists mem],,
3247 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3248 [Define if your assembler uses filds and fists mnemonics.])])
3250 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3251 gcc_cv_as_ix86_fildq,,,
3252 [fildq mem; fistpq mem],,
3253 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3254 [Define if your assembler uses fildq and fistq mnemonics.])])
3256 gcc_GAS_CHECK_FEATURE([cmov syntax],
3257 gcc_cv_as_ix86_cmov_sun_syntax,,,
3258 [cmovl.l %edx, %eax],,
3259 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3260 [Define if your assembler supports the Sun syntax for cmov.])])
3262 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3263 gcc_cv_as_ix86_ffreep,,,
3265 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3266 [Define if your assembler supports the ffreep mnemonic.])])
3268 gcc_GAS_CHECK_FEATURE([.quad directive],
3269 gcc_cv_as_ix86_quad,,,
3271 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3272 [Define if your assembler supports the .quad directive.])])
3274 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3275 gcc_cv_as_ix86_sahf,,,
3278 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3279 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3281 gcc_GAS_CHECK_FEATURE([swap suffix],
3282 gcc_cv_as_ix86_swap,,,
3283 [movl.s %esp, %ebp],,
3284 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3285 [Define if your assembler supports the swap suffix.])])
3287 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3288 gcc_cv_as_ix86_diff_sect_delta,,,
3296 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3297 [Define if your assembler supports the subtraction of symbols in different sections.])])
3299 # These two are used unconditionally by i386.[ch]; it is to be defined
3300 # to 1 if the feature is present, 0 otherwise.
3301 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3302 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3308 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3309 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3310 [Define true if the assembler supports '.long foo@GOTOFF'.])
3312 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3313 gcc_cv_as_ix86_rep_lock_prefix,,,
3315 lock orl $0, (%esp)])
3316 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_REP_LOCK_PREFIX,
3317 [`if test $gcc_cv_as_ix86_rep_lock_prefix = yes; then echo 1; else echo 0; fi`],
3318 [Define true if the assembler supports 'rep <insn>, lock <insn>'.])
3323 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3324 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3326 addl r15 = @ltoffx(x#), gp
3328 ld8.mov r16 = [[r15]], x#],,
3329 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3330 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3336 *-*-aix*) conftest_s=' .machine "pwr5"
3340 gcc_GAS_CHECK_FEATURE([.machine directive support],
3341 gcc_cv_as_machine_directive,,,
3342 [ .machine ppc7400])
3343 if test x$gcc_cv_as_machine_directive != xyes; then
3344 echo "*** This target requires an assembler supporting \".machine\"" >&2
3345 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3346 test x$build = x$target && exit 1
3350 *) conftest_s=' .machine power4
3355 gcc_GAS_CHECK_FEATURE([mfcr field support],
3356 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3358 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3359 [Define if your assembler supports mfcr field.])])
3362 *-*-aix*) conftest_s=' .machine "pwr5"
3365 *) conftest_s=' .machine power5
3370 gcc_GAS_CHECK_FEATURE([popcntb support],
3371 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3373 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3374 [Define if your assembler supports popcntb field.])])
3377 *-*-aix*) conftest_s=' .machine "pwr5x"
3380 *) conftest_s=' .machine power5
3385 gcc_GAS_CHECK_FEATURE([fp round support],
3386 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3388 [AC_DEFINE(HAVE_AS_FPRND, 1,
3389 [Define if your assembler supports fprnd.])])
3392 *-*-aix*) conftest_s=' .machine "pwr6"
3395 *) conftest_s=' .machine power6
3400 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3401 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3403 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3404 [Define if your assembler supports mffgpr and mftgpr.])])
3407 *-*-aix*) conftest_s=' .csect .text[[PR]]
3409 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3413 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3414 *) conftest_s=' .text
3416 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3419 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3420 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3422 [AC_DEFINE(HAVE_AS_REL16, 1,
3423 [Define if your assembler supports R_PPC_REL16 relocs.])])
3426 *-*-aix*) conftest_s=' .machine "pwr6"
3429 *) conftest_s=' .machine power6
3434 gcc_GAS_CHECK_FEATURE([compare bytes support],
3435 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3437 [AC_DEFINE(HAVE_AS_CMPB, 1,
3438 [Define if your assembler supports cmpb.])])
3441 *-*-aix*) conftest_s=' .machine "pwr6"
3444 *) conftest_s=' .machine power6
3449 gcc_GAS_CHECK_FEATURE([decimal float support],
3450 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3452 [AC_DEFINE(HAVE_AS_DFP, 1,
3453 [Define if your assembler supports DFP instructions.])])
3456 *-*-aix*) conftest_s=' .machine "pwr7"
3459 *) conftest_s=' .machine power7
3464 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3465 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3467 [AC_DEFINE(HAVE_AS_VSX, 1,
3468 [Define if your assembler supports VSX instructions.])])
3471 *-*-aix*) conftest_s=' .machine "pwr7"
3474 *) conftest_s=' .machine power7
3479 gcc_GAS_CHECK_FEATURE([popcntd support],
3480 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3482 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3483 [Define if your assembler supports POPCNTD instructions.])])
3486 *-*-aix*) conftest_s=' .csect .text[[PR]]
3488 *) conftest_s=' .text
3492 gcc_GAS_CHECK_FEATURE([lwsync support],
3493 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3495 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3496 [Define if your assembler supports LWSYNC instructions.])])
3499 *-*-aix*) conftest_s=' .machine "476"
3502 *) conftest_s=' .machine "476"
3507 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3508 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3510 [AC_DEFINE(HAVE_AS_DCI, 1,
3511 [Define if your assembler supports the DCI/ICI instructions.])])
3513 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3514 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3515 [.gnu_attribute 4,1],,
3516 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3517 [Define if your assembler supports .gnu_attribute.])])
3519 gcc_GAS_CHECK_FEATURE([tls marker support],
3520 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3521 [ bl __tls_get_addr(x@tlsgd)],,
3522 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3523 [Define if your assembler supports arg info for __tls_get_addr.])])
3527 gcc_GAS_CHECK_FEATURE([.ref support],
3528 gcc_cv_as_aix_ref, [2.21.0],,
3529 [ .csect stuff[[rw]]
3535 [AC_DEFINE(HAVE_AS_REF, 1,
3536 [Define if your assembler supports .ref])])
3542 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3543 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3544 [ lw $4,%gp_rel(foo)($4)],,
3545 [if test x$target_cpu_default = x
3546 then target_cpu_default=MASK_EXPLICIT_RELOCS
3547 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3549 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3550 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3551 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3552 [Define if the assembler understands -mno-shared.])])
3554 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3555 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3556 [.gnu_attribute 4,1],,
3557 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3558 [Define if your assembler supports .gnu_attribute.])])
3560 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3561 gcc_cv_as_mips_dtprelword, [2,18,0],,
3562 [.section .tdata,"awT",@progbits
3566 .dtprelword x+0x8000],,
3567 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3568 [Define if your assembler supports .dtprelword.])])
3570 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3571 gcc_cv_as_ld_jalr_reloc=no
3572 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3573 if test $in_tree_ld = yes ; then
3574 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3575 && test $in_tree_ld_is_elf = yes; then
3576 gcc_cv_as_ld_jalr_reloc=yes
3578 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3579 echo ' .ent x' > conftest.s
3580 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3581 echo ' ld $25,%call16(y)($28)' >> conftest.s
3582 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3583 echo '1: jalr $25' >> conftest.s
3584 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3585 echo '1: jalr $25' >> conftest.s
3586 echo ' .end x' >> conftest.s
3587 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3588 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3589 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3590 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3591 gcc_cv_as_ld_jalr_reloc=yes
3597 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3598 if test x$target_cpu_default = x; then
3599 target_cpu_default=MASK_RELAX_PIC_CALLS
3601 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3604 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3606 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3607 [gcc_cv_ld_mips_personality_relaxation],
3608 [gcc_cv_ld_mips_personality_relaxation=no
3609 if test $in_tree_ld = yes ; then
3610 if test "$gcc_cv_gld_major_version" -eq 2 \
3611 -a "$gcc_cv_gld_minor_version" -ge 21 \
3612 -o "$gcc_cv_gld_major_version" -gt 2; then
3613 gcc_cv_ld_mips_personality_relaxation=yes
3615 elif test x$gcc_cv_as != x \
3616 -a x$gcc_cv_ld != x \
3617 -a x$gcc_cv_readelf != x ; then
3618 cat > conftest.s <<EOF
3620 .cfi_personality 0x80,indirect_ptr
3627 .section .data,"aw",@progbits
3631 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3632 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3633 if $gcc_cv_readelf -d conftest 2>&1 \
3634 | grep TEXTREL > /dev/null 2>&1; then
3636 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3637 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3640 gcc_cv_ld_mips_personality_relaxation=yes
3644 rm -f conftest.s conftest.o conftest])
3645 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3646 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3647 [Define if your linker can relax absolute .eh_frame personality
3648 pointers into PC-relative form.])
3653 # Mips and HP-UX need the GNU assembler.
3654 # Linux on IA64 might be able to use the Intel assembler.
3657 mips*-*-* | *-*-hpux* )
3658 if test x$gas_flag = xyes \
3659 || test x"$host" != x"$build" \
3660 || test ! -x "$gcc_cv_as" \
3661 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3664 echo "*** This configuration requires the GNU assembler" >&2
3670 # ??? Not all targets support dwarf2 debug_line, even within a version
3671 # of gas. Moreover, we need to emit a valid instruction to trigger any
3672 # info to the output file. So, as supported targets are added to gas 2.11,
3673 # add some instruction here to (also) show we expect this might work.
3674 # ??? Once 2.11 is released, probably need to add first known working
3675 # version to the per-target configury.
3677 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3678 | x86_64*-*-* | hppa*-*-* | arm*-*-* \
3679 | xstormy16*-*-* | cris-*-* | crisv32-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \
3680 | spu-*-* | fido*-*-* | m32c-*-*)
3683 ia64*-*-* | s390*-*-*)
3690 if test x"$insn" != x; then
3692 .file 1 \"conftest.s\"
3695 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3696 gcc_cv_as_dwarf2_debug_line,
3697 [elf,2,11,0],, [$conftest_s],
3698 [if test x$gcc_cv_objdump != x \
3699 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3700 | grep debug_line > /dev/null 2>&1; then
3701 gcc_cv_as_dwarf2_debug_line=yes
3704 # The .debug_line file table must be in the exact order that
3705 # we specified the files, since these indices are also used
3706 # by DW_AT_decl_file. Approximate this test by testing if
3707 # the assembler bitches if the same index is assigned twice.
3708 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3709 gcc_cv_as_dwarf2_file_buggy,,,
3713 if test $gcc_cv_as_dwarf2_debug_line = yes \
3714 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3715 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3716 [Define if your assembler supports dwarf2 .file/.loc directives,
3717 and preserves file table indices exactly as given.])
3720 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3721 gcc_cv_as_gdwarf2_flag,
3722 [elf,2,11,0], [--gdwarf2], [$insn],,
3723 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3724 [Define if your assembler supports the --gdwarf2 option.])])
3726 gcc_GAS_CHECK_FEATURE([--gstabs option],
3727 gcc_cv_as_gstabs_flag,
3728 [elf,2,11,0], [--gstabs], [$insn],
3729 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3730 # and warns about it, but still exits successfully. So check for
3732 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3734 else gcc_cv_as_gstabs_flag=yes
3736 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3737 [Define if your assembler supports the --gstabs option.])])
3739 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3740 gcc_cv_as_debug_prefix_map_flag,
3741 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3742 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3743 [Define if your assembler supports the --debug-prefix-map option.])])
3746 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3749 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3750 [Define if your assembler supports .lcomm with an alignment field.])])
3752 AC_ARG_ENABLE(gnu-unique-object,
3753 [ --enable-gnu-unique-object enable the use of the @gnu_unique_object ELF extension on
3755 [case $enable_gnu_unique_object in
3757 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
3758 Valid choices are 'yes' and 'no'.]) ;;
3760 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
3762 [.type foo, @gnu_unique_object],,
3763 # Also check for ld.so support, i.e. glibc 2.11 or higher.
3764 [[if test x$host = x$build -a x$host = x$target &&
3765 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
3766 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
3767 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
3768 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
3769 if test "$glibcnum" -ge 2011 ; then
3770 enable_gnu_unique_object=yes
3773 if test x$enable_gnu_unique_object = xyes; then
3774 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
3775 [Define if your assembler supports @gnu_unique_object.])
3778 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3779 [gcc_cv_as_line_zero],
3780 [gcc_cv_as_line_zero=no
3781 if test $in_tree_gas = yes; then
3782 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3783 elif test "x$gcc_cv_as" != x; then
3784 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3785 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3786 test "x`cat conftest.out`" = x
3788 gcc_cv_as_line_zero=yes
3790 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3791 cat conftest.s >&AS_MESSAGE_LOG_FD
3792 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3793 cat conftest.out >&AS_MESSAGE_LOG_FD
3795 rm -f conftest.o conftest.s conftest.out
3797 if test "x$gcc_cv_as_line_zero" = xyes; then
3798 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3799 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3802 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3803 gcc_cv_ld_eh_frame_hdr=no
3804 if test $in_tree_ld = yes ; then
3805 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3806 && test $in_tree_ld_is_elf = yes; then
3807 gcc_cv_ld_eh_frame_hdr=yes
3809 elif test x$gcc_cv_ld != x; then
3810 # Check if linker supports --eh-frame-hdr option
3811 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3812 gcc_cv_ld_eh_frame_hdr=yes
3815 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3816 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3817 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3818 [Define if your linker supports --eh-frame-hdr option.])
3820 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3822 AC_MSG_CHECKING(linker position independent executable support)
3824 if test $in_tree_ld = yes ; then
3825 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3826 && test $in_tree_ld_is_elf = yes; then
3829 elif test x$gcc_cv_ld != x; then
3830 # Check if linker supports -pie option
3831 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3835 if test x"$gcc_cv_ld_pie" = xyes; then
3836 AC_DEFINE(HAVE_LD_PIE, 1,
3837 [Define if your linker supports -pie option.])
3839 AC_MSG_RESULT($gcc_cv_ld_pie)
3841 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3842 gcc_cv_ld_eh_gc_sections=no
3843 if test $in_tree_ld = yes ; then
3844 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3845 && test $in_tree_ld_is_elf = yes; then
3846 gcc_cv_ld_eh_gc_sections=yes
3848 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3849 cat > conftest.s <<EOF
3852 .type _start, @function
3855 .size _start, .-_start
3856 .section .text.foo,"ax",@progbits
3857 .type foo, @function
3861 .section .gcc_except_table.foo,"a",@progbits
3864 .section .eh_frame,"a",@progbits
3867 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3868 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3869 | grep "gc-sections option ignored" > /dev/null; then
3870 gcc_cv_ld_eh_gc_sections=no
3871 elif $gcc_cv_objdump -h conftest 2> /dev/null \
3872 | grep gcc_except_table > /dev/null; then
3873 gcc_cv_ld_eh_gc_sections=yes
3874 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3875 if test x$gcc_cv_as_comdat_group != xyes; then
3876 gcc_cv_ld_eh_gc_sections=no
3877 cat > conftest.s <<EOF
3880 .type _start, @function
3883 .size _start, .-_start
3884 .section .gnu.linkonce.t.foo,"ax",@progbits
3885 .type foo, @function
3889 .section .gcc_except_table.foo,"a",@progbits
3892 .section .eh_frame,"a",@progbits
3895 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3896 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3897 | grep "gc-sections option ignored" > /dev/null; then
3898 gcc_cv_ld_eh_gc_sections=no
3899 elif $gcc_cv_objdump -h conftest 2> /dev/null \
3900 | grep gcc_except_table > /dev/null; then
3901 gcc_cv_ld_eh_gc_sections=yes
3907 rm -f conftest.s conftest.o conftest
3911 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3912 gcc_cv_ld_eh_gc_sections=no
3915 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3916 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3917 [Define if your linker supports garbage collection of
3918 sections in presence of EH frames.])
3920 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3926 AC_CACHE_CHECK(linker --as-needed support,
3927 gcc_cv_ld_as_needed,
3928 [gcc_cv_ld_as_needed=no
3929 if test $in_tree_ld = yes ; then
3930 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3931 && test $in_tree_ld_is_elf = yes; then
3932 gcc_cv_ld_as_needed=yes
3934 elif test x$gcc_cv_ld != x; then
3935 # Check if linker supports --as-needed and --no-as-needed options
3936 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3937 gcc_cv_ld_as_needed=yes
3941 if test x"$gcc_cv_ld_as_needed" = xyes; then
3942 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3943 [Define if your linker supports --as-needed and --no-as-needed options.])
3946 case "$target:$tm_file" in
3947 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3948 AC_CACHE_CHECK(linker support for omitting dot symbols,
3949 gcc_cv_ld_no_dot_syms,
3950 [gcc_cv_ld_no_dot_syms=no
3951 if test $in_tree_ld = yes ; then
3952 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3953 gcc_cv_ld_no_dot_syms=yes
3955 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3956 cat > conftest1.s <<EOF
3960 cat > conftest2.s <<EOF
3961 .section ".opd","aw"
3966 .quad .LEfoo,.TOC.@tocbase,0
3972 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3973 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3974 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3975 gcc_cv_ld_no_dot_syms=yes
3977 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3980 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3981 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3982 [Define if your PowerPC64 linker only needs function descriptor syms.])
3987 AC_CACHE_CHECK(linker --build-id support,
3989 [gcc_cv_ld_buildid=no
3990 if test $in_tree_ld = yes ; then
3991 if test "$gcc_cv_gld_major_version" -eq 2 -a \
3992 "$gcc_cv_gld_minor_version" -ge 18 -o \
3993 "$gcc_cv_gld_major_version" -gt 2 \
3994 && test $in_tree_ld_is_elf = yes; then
3995 gcc_cv_ld_buildid=yes
3997 elif test x$gcc_cv_ld != x; then
3998 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
3999 gcc_cv_ld_buildid=yes
4002 if test x"$gcc_cv_ld_buildid" = xyes; then
4003 AC_DEFINE(HAVE_LD_BUILDID, 1,
4004 [Define if your linker supports --build-id.])
4007 AC_ARG_ENABLE(linker-build-id,
4008 [ --enable-linker-build-id
4009 compiler will always pass --build-id to linker],
4011 enable_linker_build_id=no)
4013 if test x"$enable_linker_build_id" = xyes; then
4014 if test x"$gcc_cv_ld_buildid" = xyes; then
4015 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4016 [Define if gcc should always pass --build-id to linker.])
4018 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4022 # In binutils 2.21, GNU ld gained support for new emulations fully
4023 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4024 AC_CACHE_CHECK(linker *_sol2 emulation support,
4025 gcc_cv_ld_sol2_emulation,
4026 [gcc_cv_ld_sol2_emulation=no
4027 if test $in_tree_ld = yes ; then
4028 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4029 "$gcc_cv_gld_minor_version" -ge 21 -o \
4030 "$gcc_cv_gld_major_version" -gt 2 \
4031 && test $in_tree_ld_is_elf = yes; then
4032 gcc_cv_ld_sol2_emulation=yes
4034 elif test x$gcc_cv_ld != x; then
4035 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4036 grep _sol2 > /dev/null; then
4037 gcc_cv_ld_sol2_emulation=yes
4040 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4041 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4042 [Define if your linker supports the *_sol2 emulations.])
4045 AC_CACHE_CHECK(linker --sysroot support,
4047 [gcc_cv_ld_sysroot=no
4048 if test $in_tree_ld = yes ; then
4049 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4050 gcc_cv_ld_sysroot=yes
4052 elif test x$gcc_cv_ld != x; then
4053 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4054 gcc_cv_ld_sysroot=yes
4057 if test x"$gcc_cv_ld_sysroot" = xyes; then
4058 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4059 [Define if your linker supports --sysroot.])
4062 if test x$with_sysroot = x && test x$host = x$target \
4063 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4064 && test "$prefix" != "NONE"; then
4065 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4066 [Define to PREFIX/include if cpp should also search that directory.])
4069 # Test for stack protector support in target C library.
4070 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4071 gcc_cv_libc_provides_ssp,
4072 [gcc_cv_libc_provides_ssp=no
4074 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4075 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4076 if test "x$with_headers" != x; then
4077 glibc_header_dir=$with_headers
4078 elif test "x$with_sysroot" = x; then
4079 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4080 elif test "x$with_build_sysroot" != "x"; then
4081 glibc_header_dir="${with_build_sysroot}/usr/include"
4082 elif test "x$with_sysroot" = xyes; then
4083 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4085 glibc_header_dir="${with_sysroot}/usr/include"
4088 glibc_header_dir=/usr/include
4090 [# glibc 2.4 and later provides __stack_chk_fail and
4091 # either __stack_chk_guard, or TLS access to stack guard canary.
4092 if test -f $glibc_header_dir/features.h \
4093 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4094 $glibc_header_dir/features.h > /dev/null; then
4095 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4096 $glibc_header_dir/features.h > /dev/null; then
4097 gcc_cv_libc_provides_ssp=yes
4098 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4099 $glibc_header_dir/features.h > /dev/null \
4100 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4101 $glibc_header_dir/features.h > /dev/null; then
4102 gcc_cv_libc_provides_ssp=yes
4103 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4104 $glibc_header_dir/features.h > /dev/null && \
4105 test -f $glibc_header_dir/bits/uClibc_config.h && \
4106 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4107 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
4108 gcc_cv_libc_provides_ssp=yes
4113 # Avoid complicated tests (see
4114 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4115 # simply assert that glibc does provide this, which is true for all
4116 # realistically usable GNU/Hurd configurations.
4117 gcc_cv_libc_provides_ssp=yes;;
4118 *-*-darwin* | *-*-freebsd*)
4119 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4120 [echo "no __stack_chk_fail on this target"])
4122 *) gcc_cv_libc_provides_ssp=no ;;
4125 if test x$gcc_cv_libc_provides_ssp = xyes; then
4126 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4127 [Define if your target C library provides stack protector support])
4130 # Check if TFmode long double should be used by default or not.
4131 # Some glibc targets used DFmode long double, but with glibc 2.4
4132 # and later they can use TFmode.
4134 powerpc*-*-linux* | \
4139 AC_ARG_WITH(long-double-128,
4140 [ --with-long-double-128 Use 128-bit long double by default.],
4141 gcc_cv_target_ldbl128="$with_long_double_128",
4142 [[gcc_cv_target_ldbl128=no
4143 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4144 if test "x$with_sysroot" = x; then
4145 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4146 elif test "x$with_build_sysroot" != "x"; then
4147 glibc_header_dir="${with_build_sysroot}/usr/include"
4148 elif test "x$with_sysroot" = xyes; then
4149 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4151 glibc_header_dir="${with_sysroot}/usr/include"
4154 glibc_header_dir=/usr/include
4156 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4157 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4158 && gcc_cv_target_ldbl128=yes
4162 if test x$gcc_cv_target_ldbl128 = xyes; then
4163 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4164 [Define if TFmode long double should be the default])
4167 # Find out what GC implementation we want, or may, use.
4169 [ --with-gc={page,zone} choose the garbage collection mechanism to use
4177 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4180 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4185 echo "Using $GGC for garbage collection."
4187 # Libraries to use on the host. This will normally be set by the top
4188 # level Makefile. Here we simply capture the value for our Makefile.
4189 if test -z "${HOST_LIBS+set}"; then
4194 # Use the system's zlib library.
4196 zlibinc="-I\$(srcdir)/../zlib"
4197 AC_ARG_WITH(system-zlib,
4198 [ --with-system-zlib use installed libz],
4205 dnl Very limited version of automake's enable-maintainer-mode
4207 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4208 dnl maintainer-mode is disabled by default
4209 AC_ARG_ENABLE(maintainer-mode,
4210 [ --enable-maintainer-mode
4211 enable make rules and dependencies not useful
4212 (and sometimes confusing) to the casual installer],
4213 maintainer_mode=$enableval,
4216 AC_MSG_RESULT($maintainer_mode)
4218 if test "$maintainer_mode" = "yes"; then
4229 # Make empty files to contain the specs and options for each language.
4230 # Then add #include lines to for a compiler that has specs and/or options.
4236 # These (without "all_") are set in each config-lang.in.
4237 # `language' must be a single word so is spelled singularly.
4240 all_outputs='Makefile gccbug'
4241 # List of language makefile fragments.
4243 # List of language subdirectory makefiles. Deprecated.
4245 # Additional files for gengtype
4246 all_gtfiles="$target_gtfiles"
4248 # These are the languages that are set in --enable-languages,
4249 # and are available in the GCC tree.
4250 all_selected_languages=
4252 # Add the language fragments.
4253 # Languages are added via two mechanisms. Some information must be
4254 # recorded in makefile variables, these are defined in config-lang.in.
4255 # We accumulate them and plug them into the main Makefile.
4256 # The other mechanism is a set of hooks for each of the main targets
4257 # like `clean', `install', etc.
4259 language_hooks="Make-hooks"
4261 for lang in ${srcdir}/*/config-lang.in
4264 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4266 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4267 if test "x$lang_alias" = x
4269 echo "$lang doesn't set \$language." 1>&2
4272 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4273 subdirs="$subdirs $subdir"
4275 # $gcc_subdir is where the gcc integration files are to be found
4276 # for a language, both for internal compiler purposes (compiler
4277 # sources implementing front-end to GCC tree converters), and for
4278 # build infrastructure purposes (Make-lang.in, etc.)
4280 # This will be <subdir> (relative to $srcdir) if a line like
4281 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4282 # is found in <langdir>/config-lang.in, and will remain <langdir>
4285 # Except for the language alias (fetched above), the regular
4286 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4287 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4288 # only this and the language alias.
4290 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4291 if [ "$gcc_subdir" = "" ]; then
4292 gcc_subdir="$subdir"
4295 case ",$enable_languages," in
4297 all_selected_languages="$all_selected_languages $lang_alias"
4298 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4299 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4311 . ${srcdir}/$gcc_subdir/config-lang.in
4312 if test "x$language" = x
4314 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4319 case ",$enable_languages," in
4322 for i in $subdir_requires; do
4323 test -f "${srcdir}/$i/config-lang.in" && continue
4331 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4332 if test -f $srcdir/$gcc_subdir/lang.opt; then
4333 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4335 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4336 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4338 if test -f ${srcdir}/$gcc_subdir/Makefile.in
4339 then all_lang_makefiles="$gcc_subdir/Makefile"
4341 all_languages="$all_languages $language"
4342 all_compilers="$all_compilers $compilers"
4343 all_outputs="$all_outputs $outputs"
4344 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4345 case ",$enable_languages," in
4347 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4349 AC_SUBST(enable_lto)
4350 # LTO needs to speak the platform's object file format, and has a
4351 # number of implementations of the required binary file access APIs.
4352 # ELF is the most common, and default. We only link libelf if ELF
4353 # is indeed the selected format.
4354 LTO_BINARY_READER=${lto_binary_reader}
4355 LTO_USE_LIBELF=-lelf
4356 if test "x$lto_binary_reader" != "xlto-elf" ; then
4359 AC_SUBST(LTO_BINARY_READER)
4360 AC_SUBST(LTO_USE_LIBELF)
4366 # Pick up gtfiles for c
4368 . ${srcdir}/c-config-lang.in
4369 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4372 for language in $all_selected_languages
4374 check_languages="$check_languages check-$language"
4377 # We link each language in with a set of hooks, reached indirectly via
4378 # lang.${target}. Only do so for selected languages.
4382 target_list="all.cross start.encap rest.encap tags \
4383 install-common install-man install-info install-pdf install-html dvi \
4384 pdf html uninstall info man srcextra srcman srcinfo \
4385 mostlyclean clean distclean maintainer-clean install-plugin"
4387 for t in $target_list
4390 for lang in $all_selected_languages
4394 echo "lang.$t: $x" >> Make-hooks
4403 echo "dir ." > .gdbinit
4404 echo "dir ${srcdir}" >> .gdbinit
4405 if test x$gdb_needs_out_file_path = xyes
4407 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4409 if test "x$subdirs" != x; then
4412 echo "dir ${srcdir}/$s" >> .gdbinit
4415 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4417 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4418 AC_SUBST(gcc_tooldir)
4421 # Find a directory in which to install a shared libgcc.
4423 AC_ARG_ENABLE(version-specific-runtime-libs,
4424 [ --enable-version-specific-runtime-libs
4425 specify that runtime libraries should be
4426 installed in a compiler-specific directory])
4428 AC_ARG_WITH(slibdir,
4429 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
4430 slibdir="$with_slibdir",
4431 if test "${enable_version_specific_runtime_libs+set}" = set; then
4432 slibdir='$(libsubdir)'
4433 elif test "$host" != "$target"; then
4434 slibdir='$(build_tooldir)/lib'
4440 # Substitute configuration variables
4443 AC_SUBST(all_compilers)
4444 AC_SUBST(all_gtfiles)
4445 AC_SUBST(all_lang_makefrags)
4446 AC_SUBST(all_lang_makefiles)
4447 AC_SUBST(all_languages)
4448 AC_SUBST(all_selected_languages)
4449 AC_SUBST(build_exeext)
4450 AC_SUBST(build_install_headers_dir)
4451 AC_SUBST(build_xm_file_list)
4452 AC_SUBST(build_xm_include_list)
4453 AC_SUBST(build_xm_defines)
4454 AC_SUBST(build_file_translate)
4455 AC_SUBST(check_languages)
4456 AC_SUBST(cpp_install_dir)
4457 AC_SUBST(xmake_file)
4458 AC_SUBST(tmake_file)
4459 AC_SUBST(TM_ENDIAN_CONFIG)
4460 AC_SUBST(TM_MULTILIB_CONFIG)
4461 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4462 AC_SUBST(extra_gcc_objs)
4463 AC_SUBST(extra_headers_list)
4464 AC_SUBST(extra_objs)
4465 AC_SUBST(extra_parts)
4466 AC_SUBST(extra_passes)
4467 AC_SUBST(extra_programs)
4468 AC_SUBST(float_h_file)
4469 AC_SUBST(gcc_config_arguments)
4470 AC_SUBST(gcc_gxx_include_dir)
4471 AC_SUBST(host_exeext)
4472 AC_SUBST(host_xm_file_list)
4473 AC_SUBST(host_xm_include_list)
4474 AC_SUBST(host_xm_defines)
4475 AC_SUBST(out_host_hook_obj)
4477 AC_SUBST(lang_opt_files)
4478 AC_SUBST(lang_specs_files)
4479 AC_SUBST(lang_tree_files)
4480 AC_SUBST(local_prefix)
4482 AC_SUBST(objc_boehm_gc)
4484 AC_SUBST(out_object_file)
4485 AC_SUBST(thread_file)
4486 AC_SUBST(tm_file_list)
4487 AC_SUBST(tm_include_list)
4488 AC_SUBST(tm_defines)
4489 AC_SUBST(tm_p_file_list)
4490 AC_SUBST(tm_p_include_list)
4491 AC_SUBST(xm_file_list)
4492 AC_SUBST(xm_include_list)
4493 AC_SUBST(xm_defines)
4494 AC_SUBST(use_gcc_stdint)
4495 AC_SUBST(c_target_objs)
4496 AC_SUBST(cxx_target_objs)
4497 AC_SUBST(fortran_target_objs)
4498 AC_SUBST(target_cpu_default)
4500 AC_SUBST_FILE(language_hooks)
4503 if test x${build} = x${host} ; then
4504 if test x${host} = x${target} ; then
4505 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4507 echo "Links are now set up to build a cross-compiler" 1>&2
4508 echo " from ${host} to ${target}." 1>&2
4511 if test x${host} = x${target} ; then
4512 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4513 echo " for ${target}." 1>&2
4515 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4516 echo " from ${host} to ${target}." 1>&2
4520 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4521 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4523 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4524 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4526 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4527 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4528 if test "x${CLOOGLIBS}" != "x" ; then
4529 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4532 AC_ARG_VAR(LIBELFLIBS,[How to link libelf])
4533 AC_ARG_VAR(LIBELFINC,[How to find libelf include files])
4534 if test "x${LIBELFLIBS}" != "x" ; then
4535 AC_DEFINE(HAVE_libelf, 1, [Define if libelf is in use.])
4538 # Check for plugin support
4539 AC_ARG_ENABLE(plugin,
4540 [ --enable-plugin enable plugin support],
4541 enable_plugin=$enableval,
4542 enable_plugin=yes; default_plugin=yes)
4545 if test x"$enable_plugin" = x"yes"; then
4547 AC_MSG_CHECKING([for exported symbols])
4548 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4549 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4550 if $gcc_cv_objdump -T conftest | grep foobar > /dev/null; then
4551 : # No need to use a flag
4553 AC_MSG_CHECKING([for -rdynamic])
4554 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
4555 if $gcc_cv_objdump -T conftest | grep foobar > /dev/null; then
4557 pluginlibs="-rdynamic"
4562 AC_MSG_RESULT([$plugin_rdynamic])
4567 AC_SEARCH_LIBS([dlopen], [dl])
4568 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
4569 pluginlibs="$pluginlibs -ldl"
4573 # Check that we can build shared objects with -fPIC -shared
4574 saved_LDFLAGS="$LDFLAGS"
4575 LDFLAGS="$LDFLAGS -fPIC -shared"
4576 AC_MSG_CHECKING([for -fPIC -shared])
4578 [extern int X;],[return X == 0;],
4579 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
4580 [AC_MSG_RESULT([no]); have_pic_shared=no])
4581 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
4585 LDFLAGS="$saved_LDFLAGS"
4587 # If plugin support had been requested but not available, fail.
4588 if test x"$enable_plugin" = x"no" ; then
4589 if test x"$default_plugin" != x"yes"; then
4591 Building GCC with plugin support requires a host that supports
4592 -fPIC, -shared, -ldl and -rdynamic.])
4597 AC_SUBST(pluginlibs)
4598 AC_SUBST(enable_plugin)
4599 if test x"$enable_plugin" = x"yes"; then
4600 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
4603 # Configure the subdirectories
4604 # AC_CONFIG_SUBDIRS($subdirs)
4606 # Create the Makefile
4607 # and configure language subdirectories
4608 AC_CONFIG_FILES($all_outputs)
4610 AC_CONFIG_COMMANDS([default],
4612 case ${CONFIG_HEADERS} in
4613 *auto-host.h:config.in*)
4616 # Make sure all the subdirs exist.
4617 for d in $subdirs doc build
4619 test -d $d || mkdir $d
4622 [subdirs='$subdirs'])