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 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)
788 # Build with intermodule optimisations
789 AC_ARG_ENABLE(intermodule,
790 [ --enable-intermodule build the compiler in one step],
791 [case ${enable_intermodule} in
792 yes) onestep="-onestep";;
798 ACX_PKGVERSION([GCC])
799 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
801 # Sanity check enable_languages in case someone does not run the toplevel
802 # configure # script.
803 AC_ARG_ENABLE(languages,
804 [ --enable-languages=LIST specify which front-ends to build],
805 [case ,${enable_languages}, in
807 # go safe -- we cannot be much sure without the toplevel
809 # analysis of which target libs are present and usable
813 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
818 enable_languages=c,${enable_languages}
821 [enable_languages=c])
823 AC_ARG_WITH(multilib-list,
824 [ --with-multilib-list Select multilibs (SH only)],
826 with_multilib_list=default)
828 # -------------------------
829 # Checks for other programs
830 # -------------------------
834 # Find some useful tools
836 # We need awk to create options.c and options.h.
837 # Bail out if it's missing.
839 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
847 # By default, the Darwin ranlib will not treat common symbols as
848 # definitions when building the archive table of contents. Other
849 # ranlibs do that; pass an option to the Darwin ranlib that makes
850 # it behave similarly.
856 AC_SUBST(ranlib_flags)
860 # See if cmp has --ignore-initial.
861 gcc_AC_PROG_CMP_IGNORE_INITIAL
863 # See if we have the mktemp command.
864 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
866 # See if makeinfo has been installed and is modern enough
867 # that we can use it.
868 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
869 [GNU texinfo.* \([0-9][0-9.]*\)],
870 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
871 if test $gcc_cv_prog_makeinfo_modern = no; then
873 *** Makeinfo is missing or too old.
874 *** Info documentation will not be built.])
881 # Is pod2man recent enough to regenerate manpages?
882 AC_MSG_CHECKING([for recent Pod::Man])
883 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
885 GENERATED_MANPAGES=generated-manpages
890 AC_SUBST(GENERATED_MANPAGES)
892 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
895 dnl Don't use AC_PROG_LEX; we insist on flex.
896 dnl LEXLIB is not useful in gcc.
897 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
900 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
902 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
903 # check for build == host before using them.
906 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
907 && test -d ../binutils ; then
908 NM='$(objdir)/../binutils/nm-new'
910 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
914 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
915 && test -d ../binutils ; then
916 AR='$(objdir)/../binutils/ar'
918 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
922 # --------------------
923 # Checks for C headers
924 # --------------------
926 # Need to reject headers which give warnings, so that the -Werror bootstrap
927 # works later. *sigh* This needs to come before all header checks.
934 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
935 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
936 sys/resource.h sys/param.h sys/times.h sys/stat.h \
937 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
939 # Check for thread headers.
940 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
941 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
943 # These tests can't be done till we know if we have limits.h.
952 # These libraries may be used by collect2.
953 # We may need a special search path to get them linked.
954 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
956 for libs in '' -lld -lmld \
957 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
958 '-L/usr/lib/cmplrs/cc3.11 -lmld'
961 AC_TRY_LINK_FUNC(ldopen,
962 [gcc_cv_collect2_libs="$libs"; break])
965 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
966 case $gcc_cv_collect2_libs in
968 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
970 AC_SUBST(COLLECT2_LIBS)
972 # When building Ada code on Alpha, we need exc_resume which is usually in
973 # -lexc. So test for it.
976 AC_SEARCH_LIBS(exc_resume, exc)
979 AC_SUBST(GNAT_LIBEXC)
981 # Some systems put ldexp and frexp in libm instead of libc; assume
982 # they're both in the same place. jcf-dump needs them.
985 AC_SEARCH_LIBS(ldexp, m)
990 # Use <inttypes.h> only if it exists,
991 # doesn't clash with <sys/types.h>, and declares intmax_t.
992 AC_MSG_CHECKING(for inttypes.h)
993 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
994 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
995 [[#include <sys/types.h>
996 #include <inttypes.h>]],
997 [[intmax_t i = -1;]])],
998 [gcc_cv_header_inttypes_h=yes],
999 [gcc_cv_header_inttypes_h=no])])
1000 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1001 if test $gcc_cv_header_inttypes_h = yes; then
1002 AC_DEFINE(HAVE_INTTYPES_H, 1,
1003 [Define if you have a working <inttypes.h> header file.])
1006 dnl Disabled until we have a complete test for buggy enum bitfields.
1007 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1009 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1010 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1011 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1012 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1013 putchar_unlocked putc_unlocked)
1014 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1015 sysconf strsignal getrusage nl_langinfo \
1016 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1019 if test x$ac_cv_func_mbstowcs = xyes; then
1020 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1021 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1027 [gcc_cv_func_mbstowcs_works=yes],
1028 [gcc_cv_func_mbstowcs_works=no],
1029 [gcc_cv_func_mbstowcs_works=yes])])
1030 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1031 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1032 [Define this macro if mbstowcs does not crash when its
1033 first argument is NULL.])
1037 AC_CHECK_TYPE(ssize_t, int)
1038 AC_CHECK_TYPE(caddr_t, char *)
1040 gcc_AC_FUNC_MMAP_BLACKLIST
1044 # Under VMS, vfork works very differently than on Unix. The standard test
1045 # won't work, and it isn't easily adaptable. It makes more sense to
1047 ac_cv_func_vfork_works=yes
1053 # Until we have in-tree GNU iconv:
1055 AC_SUBST(LIBICONV_DEP)
1061 # We will need to find libiberty.h and ansidecl.h
1062 saved_CFLAGS="$CFLAGS"
1063 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1064 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1065 strsignal strstr strverscmp \
1066 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1067 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1068 #include "ansidecl.h"
1069 #include "system.h"])
1071 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1072 #include "ansidecl.h"
1074 #ifdef HAVE_SYS_RESOURCE_H
1075 #include <sys/resource.h>
1079 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1080 #include "ansidecl.h"
1082 #ifdef HAVE_SYS_RESOURCE_H
1083 #include <sys/resource.h>
1085 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1086 [Define to `long' if <sys/resource.h> doesn't define.])])
1088 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1089 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1090 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1091 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1092 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1093 #include "ansidecl.h"
1102 gcc_AC_CHECK_DECLS(times, , ,[
1103 #include "ansidecl.h"
1105 #ifdef HAVE_SYS_TIMES_H
1106 #include <sys/times.h>
1110 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1111 #include "ansidecl.h"
1116 # More time-related stuff.
1117 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1118 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1119 #include "ansidecl.h"
1121 #ifdef HAVE_SYS_TIMES_H
1122 #include <sys/times.h>
1124 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1125 if test $ac_cv_struct_tms = yes; then
1126 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1127 [Define if <sys/times.h> defines struct tms.])
1130 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1131 # revisit after autoconf 2.50.
1132 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1133 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1134 #include "ansidecl.h"
1136 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1137 if test $gcc_cv_type_clock_t = yes; then
1138 AC_DEFINE(HAVE_CLOCK_T, 1,
1139 [Define if <time.h> defines clock_t.])
1142 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1143 CFLAGS="$saved_CFLAGS"
1145 gcc_AC_INITFINI_ARRAY
1147 # mkdir takes a single argument on some systems.
1148 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1156 # With Setjmp/Longjmp based exception handling.
1157 AC_ARG_ENABLE(sjlj-exceptions,
1158 [ --enable-sjlj-exceptions
1159 arrange to use setjmp/longjmp exception handling],
1162 if test $enableval != yes; then
1163 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1168 force_sjlj_exceptions=yes],
1171 force_sjlj_exceptions=yes
1175 force_sjlj_exceptions=no
1178 if test $force_sjlj_exceptions = yes; then
1179 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1180 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1181 [Define 0/1 to force the choice for exception handling model.])
1184 # For platforms with the unwind ABI which includes an unwind library,
1185 # libunwind, we can choose to use the system libunwind.
1186 # config.gcc also contains tests of with_system_libunwind.
1187 GCC_CHECK_UNWIND_GETIPINFO
1189 # --------------------------------------------------------
1190 # Build, host, and target specific configuration fragments
1191 # --------------------------------------------------------
1193 # Collect build-machine-specific information.
1194 . ${srcdir}/config.build
1196 # Collect host-machine-specific information.
1197 . ${srcdir}/config.host
1201 # Collect target-machine-specific information.
1202 . ${srcdir}/config.gcc
1204 extra_objs="${host_extra_objs} ${extra_objs}"
1205 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1207 # Default the target-machine variables that were not explicitly set.
1208 if test x"$tm_file" = x
1209 then tm_file=$cpu_type/$cpu_type.h; fi
1211 if test x"$extra_headers" = x
1212 then extra_headers=; fi
1214 if test x$md_file = x
1215 then md_file=$cpu_type/$cpu_type.md; fi
1217 if test x$out_file = x
1218 then out_file=$cpu_type/$cpu_type.c; fi
1220 if test x"$tmake_file" = x
1221 then tmake_file=$cpu_type/t-$cpu_type
1224 if test x"$dwarf2" = xyes
1225 then tm_file="$tm_file tm-dwarf2.h"
1228 # Say what files are being used for the output code and MD file.
1229 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1230 echo "Using \`$srcdir/config/$md_file' as machine description file."
1232 # If any of the xm_file variables contain nonexistent files, warn
1233 # about them and drop them.
1236 for x in $build_xm_file; do
1237 if test -f $srcdir/config/$x
1239 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1245 for x in $host_xm_file; do
1246 if test -f $srcdir/config/$x
1248 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1254 for x in $xm_file; do
1255 if test -f $srcdir/config/$x
1257 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1263 for f in $tm_file; do
1266 if test $count = ax; then
1267 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1269 echo "Using the following target machine macro files:"
1270 for f in $tm_file; do
1271 echo " $srcdir/config/$f"
1275 if test x$need_64bit_hwint = xyes; then
1276 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1277 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1280 if test x$use_long_long_for_widest_fast_int = xyes; then
1281 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1282 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1283 efficiently supported by the host hardware.])
1287 for f in $host_xm_file; do
1290 if test $count = a; then
1292 elif test $count = ax; then
1293 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1295 echo "Using the following host machine macro files:"
1296 for f in $host_xm_file; do
1297 echo " $srcdir/config/$f"
1300 echo "Using ${out_host_hook_obj} for host machine hooks."
1302 if test "$host_xm_file" != "$build_xm_file"; then
1304 for f in $build_xm_file; do
1307 if test $count = a; then
1309 elif test $count = ax; then
1310 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1312 echo "Using the following build machine macro files:"
1313 for f in $build_xm_file; do
1314 echo " $srcdir/config/$f"
1321 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1322 gcc_cv_mcontext_underscores,
1324 #include <sys/cdefs.h>
1325 #include <sys/signal.h>
1326 #include <ucontext.h>
1327 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1329 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1330 if test $gcc_cv_mcontext_underscores = yes; then
1331 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1332 [mcontext_t fields start with __])
1341 # Check if a valid thread package
1342 case ${enable_threads} in
1345 target_thread_file='single'
1349 target_thread_file='single'
1351 aix | dce | gnat | irix | posix | posix95 | rtems | \
1352 single | solaris | vxworks | win32 | mipssde)
1353 target_thread_file=${enable_threads}
1356 echo "${enable_threads} is an unknown thread package" 1>&2
1361 if test x${thread_file} = x; then
1362 # No thread file set by target-specific clauses in config.gcc,
1363 # so use file chosen by default logic above
1364 thread_file=${target_thread_file}
1367 # Make gthr-default.h if we have a thread file.
1369 if test $thread_file != single; then
1370 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1371 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1372 rm -f gthr-default.h-t
1374 mv -f gthr-default.h-t gthr-default.h
1376 gthread_flags=-DHAVE_GTHR_DEFAULT
1378 AC_SUBST(gthread_flags)
1385 if test x$enable___cxa_atexit = xyes || \
1386 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1387 if test x$host = x$target; then
1389 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1390 # keyed to flag_use_cxa_atexit
1395 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1396 [echo "__cxa_atexit can't be enabled on this target"])
1400 # We can't check for __cxa_atexit when building a cross, so assume
1404 if test x$use_cxa_atexit = xyes; then
1405 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1406 [Define if you want to use __cxa_atexit, rather than atexit, to
1407 register C++ destructors for local statics and global objects.
1408 This is essential for fully standards-compliant handling of
1409 destructors, but requires __cxa_atexit in libc.])
1413 # Look for a file containing extra machine modes.
1414 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1415 extra_modes_file='$(srcdir)'/config/${extra_modes}
1416 AC_SUBST(extra_modes_file)
1417 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1418 [Define to the name of a file containing a list of extra machine modes
1419 for this architecture.])
1422 # Convert extra_options into a form suitable for Makefile use.
1424 for f in $extra_options; do
1425 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1427 AC_SUBST(extra_opt_files)
1429 # auto-host.h is the file containing items generated by autoconf and is
1430 # the first file included by config.h.
1431 # If host=build, it is correct to have bconfig include auto-host.h
1432 # as well. If host!=build, we are in error and need to do more
1433 # work to find out the build config parameters.
1434 if test x$host = x$build
1436 build_auto=auto-host.h
1438 # We create a subdir, then run autoconf in the subdir.
1439 # To prevent recursion we set host and build for the new
1440 # invocation of configure to the build for this invocation
1447 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1448 *) realsrcdir=../${srcdir};;
1450 saved_CFLAGS="${CFLAGS}"
1451 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1452 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1453 ${realsrcdir}/configure \
1454 --enable-languages=${enable_languages-all} \
1455 --target=$target_alias --host=$build_alias --build=$build_alias
1456 CFLAGS="${saved_CFLAGS}"
1458 # We just finished tests for the build machine, so rename
1459 # the file auto-build.h in the gcc directory.
1460 mv auto-host.h ../auto-build.h
1463 build_auto=auto-build.h
1465 AC_SUBST(build_subdir)
1467 tm_file="${tm_file} defaults.h"
1468 tm_p_file="${tm_p_file} tm-preds.h"
1469 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1470 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1471 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1472 # put this back in temporarily.
1473 xm_file="auto-host.h ansidecl.h ${xm_file}"
1480 # Compile in configure arguments.
1481 if test -f configargs.h ; then
1482 # Being re-configured.
1483 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1484 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1486 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1489 # Double all backslashes and backslash all quotes to turn
1490 # gcc_config_arguments into a C string.
1491 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1492 $gcc_config_arguments
1494 gcc_config_arguments_str=`cat conftest.out`
1497 cat > configargs.h <<EOF
1498 /* Generated automatically. */
1499 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1500 static const char thread_model[] = "$thread_file";
1502 static const struct {
1503 const char *name, *value;
1504 } configure_default_options[] = $configure_default_options;
1509 gcc_BASEVER=`cat $srcdir/BASE-VER`
1510 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1511 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1512 if test -f $srcdir/REVISION ; then
1513 gcc_REVISION=`cat $srcdir/REVISION`
1517 cat > plugin-version.h <<EOF
1518 #include "configargs.h"
1520 static char basever[] = "$gcc_BASEVER";
1521 static char datestamp[] = "$gcc_DATESTAMP";
1522 static char devphase[] = "$gcc_DEVPHASE";
1523 static char revision[] = "$gcc_REVISION";
1525 /* FIXME plugins: We should make the version information more precise.
1526 One way to do is to add a checksum. */
1528 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1530 configuration_arguments};
1534 # Internationalization
1535 ZW_GNU_GETTEXT_SISTER_DIR
1537 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1538 # -liconv on the link line twice.
1539 case "$LIBINTL" in *$LIBICONV*)
1543 AC_ARG_ENABLE(secureplt,
1544 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1548 [ --enable-cld enable -mcld by default for 32bit x86], [],
1551 # Windows32 Registry support for specifying GCC installation paths.
1552 AC_ARG_ENABLE(win32-registry,
1553 [ --disable-win32-registry
1554 disable lookup of installation paths in the
1555 Registry on Windows hosts
1556 --enable-win32-registry enable registry lookup (default)
1557 --enable-win32-registry=KEY
1558 use KEY instead of GCC version as the last portion
1559 of the registry key],,)
1562 win32 | pe | cygwin* | mingw32* | uwin*)
1563 if test "x$enable_win32_registry" != xno; then
1564 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1567 if test "x$enable_win32_registry" != xno; then
1568 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1569 [Define to 1 if installation paths should be looked up in the Windows
1570 Registry. Ignored on non-Windows hosts.])
1572 if test "x$enable_win32_registry" != xyes \
1573 && test "x$enable_win32_registry" != x; then
1574 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1575 [Define to be the last component of the Windows registry key under which
1576 to look for installation paths. The full key used will be
1577 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1578 The default is the GCC version number.])
1584 # Get an absolute path to the GCC top-level source directory
1585 holddir=`${PWDCMD-pwd}`
1587 topdir=`${PWDCMD-pwd}`
1590 # Conditionalize the makefile for this host machine.
1592 for f in ${host_xmake_file}
1594 if test -f ${srcdir}/config/$f
1596 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1600 # Conditionalize the makefile for this target machine.
1602 for f in ${tmake_file}
1604 if test -f ${srcdir}/config/$f
1606 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1609 tmake_file="${tmake_file_}"
1611 out_object_file=`basename $out_file .c`.o
1613 tm_file_list="options.h"
1614 tm_include_list="options.h"
1615 for f in $tm_file; do
1618 f=`echo $f | sed 's/^..//'`
1619 tm_file_list="${tm_file_list} $f"
1620 tm_include_list="${tm_include_list} $f"
1623 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1624 tm_include_list="${tm_include_list} $f"
1627 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1628 tm_include_list="${tm_include_list} config/$f"
1635 for f in $tm_p_file; do
1638 tm_p_file_list="${tm_p_file_list} $f"
1639 tm_p_include_list="${tm_p_include_list} $f"
1642 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1643 tm_p_include_list="${tm_p_include_list} config/$f"
1649 for f in $xm_file; do
1652 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1653 xm_include_list="${xm_include_list} $f"
1656 xm_file_list="${xm_file_list} $f"
1657 xm_include_list="${xm_include_list} $f"
1660 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1661 xm_include_list="${xm_include_list} config/$f"
1667 host_xm_include_list=
1668 for f in $host_xm_file; do
1671 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1672 host_xm_include_list="${host_xm_include_list} $f"
1675 host_xm_file_list="${host_xm_file_list} $f"
1676 host_xm_include_list="${host_xm_include_list} $f"
1679 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1680 host_xm_include_list="${host_xm_include_list} config/$f"
1686 for f in $build_xm_file; do
1689 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1690 build_xm_include_list="${build_xm_include_list} $f"
1692 auto-build.h | auto-host.h )
1693 build_xm_file_list="${build_xm_file_list} $f"
1694 build_xm_include_list="${build_xm_include_list} $f"
1697 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1698 build_xm_include_list="${build_xm_include_list} config/$f"
1703 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1704 # cross-compiler which does not use the native headers and libraries.
1705 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1706 CROSS= AC_SUBST(CROSS)
1707 ALL=all.internal AC_SUBST(ALL)
1708 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1710 if test "x$with_build_sysroot" != x; then
1711 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1713 # This value is used, even on a native system, because
1714 # CROSS_SYSTEM_HEADER_DIR is just
1715 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1716 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1719 if test x$host != x$target
1721 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1723 SYSTEM_HEADER_DIR=$build_system_header_dir
1724 case "$host","$target" in
1725 # Darwin crosses can use the host system's libraries and headers,
1726 # because of the fat library support. Of course, it must be the
1727 # same version of Darwin on both sides. Allow the user to
1728 # just say --target=foo-darwin without a version number to mean
1729 # "the version on this system".
1730 *-*-darwin*,*-*-darwin*)
1731 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1732 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1733 if test $hostos = $targetos -o $targetos = darwin ; then
1735 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1740 i?86-*-*,x86_64-*-* \
1741 | powerpc*-*-*,powerpc64*-*-*)
1742 CROSS="$CROSS -DNATIVE_CROSS" ;;
1744 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1745 SYSTEM_HEADER_DIR=$build_system_header_dir
1748 # If this is a cross-compiler that does not
1749 # have its own set of headers then define
1752 # If this is using newlib, without having the headers available now,
1753 # then define inhibit_libc in LIBGCC2_CFLAGS.
1754 # This prevents libgcc2 from containing any code which requires libc
1756 : ${inhibit_libc=false}
1757 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1758 test x$with_newlib = xyes ; } &&
1759 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1762 AC_SUBST(inhibit_libc)
1764 # When building gcc with a cross-compiler, we need to adjust things so
1765 # that the generator programs are still built with the native compiler.
1766 # Also, we cannot run fixincludes.
1768 # These are the normal (build=host) settings:
1769 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1770 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1771 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1772 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1774 # And these apply if build != host, or we are generating coverage data
1775 if test x$build != x$host || test "x$coverage_flags" != x
1777 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1778 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1781 # Expand extra_headers to include complete path.
1782 # This substitutes for lots of t-* files.
1784 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1785 for file in ${extra_headers} ; do
1786 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1789 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1790 if test x"$use_gcc_tgmath" = xyes
1791 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1794 # Define collect2 in Makefile.
1795 case $host_can_use_collect2 in
1797 *) collect2='collect2$(exeext)' ;;
1799 AC_SUBST([collect2])
1801 # Add a definition of USE_COLLECT2 if system wants one.
1802 case $use_collect2 in
1803 no) use_collect2= ;;
1806 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1807 xm_defines="${xm_defines} USE_COLLECT2"
1808 case $host_can_use_collect2 in
1810 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1816 # ---------------------------
1817 # Assembler & linker features
1818 # ---------------------------
1820 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1821 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1822 # However when ld-new is first executed from the build tree, libtool will
1823 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1824 # to the build tree. While doing this we need to use the previous-stage
1825 # linker, or we have an infinite loop. The presence of a shell script as
1826 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1827 # the gcc/collect-ld script. So we need to know how libtool works, or
1828 # exec-tool will fail.
1830 m4_defun([_LT_CONFIG_COMMANDS], [])
1833 AC_SUBST(enable_fast_install)
1835 # Identify the assembler which will work hand-in-glove with the newly
1836 # built GCC, so that we can examine its features. This is the assembler
1837 # which will be driven by the driver program.
1839 # If build != host, and we aren't building gas in-tree, we identify a
1840 # build->target assembler and hope that it will have the same features
1841 # as the host->target assembler we'll be using.
1842 gcc_cv_gas_major_version=
1843 gcc_cv_gas_minor_version=
1844 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1846 m4_pattern_allow([AS_FOR_TARGET])dnl
1847 AS_VAR_SET_IF(gcc_cv_as,, [
1848 if test -x "$DEFAULT_ASSEMBLER"; then
1849 gcc_cv_as="$DEFAULT_ASSEMBLER"
1850 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1851 && test -f ../gas/Makefile \
1852 && test x$build = x$host; then
1853 gcc_cv_as=../gas/as-new$build_exeext
1854 elif test -x as$build_exeext; then
1855 # Build using assembler in the current directory.
1856 gcc_cv_as=./as$build_exeext
1857 elif test -x $AS_FOR_TARGET; then
1858 gcc_cv_as="$AS_FOR_TARGET"
1860 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1863 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1864 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1865 case "$ORIGINAL_AS_FOR_TARGET" in
1866 ./as | ./as$build_exeext) ;;
1867 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1870 AC_MSG_CHECKING(what assembler to use)
1871 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1872 # Single tree build which includes gas. We want to prefer it
1873 # over whatever linker top-level may have detected, since
1874 # we'll use what we're building after installation anyway.
1875 AC_MSG_RESULT(newly built gas)
1877 _gcc_COMPUTE_GAS_VERSION
1878 in_tree_gas_is_elf=no
1879 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1880 || (grep 'obj_format = multi' ../gas/Makefile \
1881 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1883 in_tree_gas_is_elf=yes
1886 AC_MSG_RESULT($gcc_cv_as)
1890 # Identify the linker which will work hand-in-glove with the newly
1891 # built GCC, so that we can examine its features. This is the linker
1892 # which will be driven by the driver program.
1894 # If build != host, and we aren't building gas in-tree, we identify a
1895 # build->target linker and hope that it will have the same features
1896 # as the host->target linker we'll be using.
1897 gcc_cv_gld_major_version=
1898 gcc_cv_gld_minor_version=
1899 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1900 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1902 AS_VAR_SET_IF(gcc_cv_ld,, [
1903 if test -x "$DEFAULT_LINKER"; then
1904 gcc_cv_ld="$DEFAULT_LINKER"
1905 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1906 && test -f ../ld/Makefile \
1907 && test x$build = x$host; then
1908 gcc_cv_ld=../ld/ld-new$build_exeext
1909 elif test -x collect-ld$build_exeext; then
1910 # Build using linker in the current directory.
1911 gcc_cv_ld=./collect-ld$build_exeext
1912 elif test -x $LD_FOR_TARGET; then
1913 gcc_cv_ld="$LD_FOR_TARGET"
1915 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1918 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1919 PLUGIN_LD=`basename $gcc_cv_ld`
1920 AC_ARG_WITH(plugin-ld,
1921 [ --with-plugin-ld=[[ARG]] specify the plugin linker],
1922 [if test x"$withval" != x; then
1923 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1924 PLUGIN_LD="$withval"
1926 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1927 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1929 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1930 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1931 case "$ORIGINAL_LD_FOR_TARGET" in
1932 ./collect-ld | ./collect-ld$build_exeext) ;;
1933 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1936 AC_MSG_CHECKING(what linker to use)
1937 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1938 # Single tree build which includes ld. We want to prefer it
1939 # over whatever linker top-level may have detected, since
1940 # we'll use what we're building after installation anyway.
1941 AC_MSG_RESULT(newly built ld)
1943 in_tree_ld_is_elf=no
1944 if (grep 'EMUL = .*elf' ../ld/Makefile \
1945 || grep 'EMUL = .*linux' ../ld/Makefile \
1946 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1947 in_tree_ld_is_elf=yes
1949 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
1952 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1953 if test x$gcc_cv_gld_version != x; then
1957 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1958 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1961 AC_MSG_RESULT($gcc_cv_ld)
1965 # Figure out what nm we will be using.
1966 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1967 AS_VAR_SET_IF(gcc_cv_nm,, [
1968 if test -f $gcc_cv_binutils_srcdir/configure.in \
1969 && test -f ../binutils/Makefile \
1970 && test x$build = x$host; then
1971 gcc_cv_nm=../binutils/nm-new$build_exeext
1972 elif test -x nm$build_exeext; then
1973 gcc_cv_nm=./nm$build_exeext
1974 elif test -x $NM_FOR_TARGET; then
1975 gcc_cv_nm="$NM_FOR_TARGET"
1977 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1980 AC_MSG_CHECKING(what nm to use)
1981 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1982 # Single tree build which includes binutils.
1983 AC_MSG_RESULT(newly built nm)
1986 AC_MSG_RESULT($gcc_cv_nm)
1990 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1991 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1992 case "$ORIGINAL_NM_FOR_TARGET" in
1993 ./nm | ./nm$build_exeext) ;;
1994 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
1998 # Figure out what objdump we will be using.
1999 AS_VAR_SET_IF(gcc_cv_objdump,, [
2000 if test -f $gcc_cv_binutils_srcdir/configure.in \
2001 && test -f ../binutils/Makefile \
2002 && test x$build = x$host; then
2003 # Single tree build which includes binutils.
2004 gcc_cv_objdump=../binutils/objdump$build_exeext
2005 elif test -x objdump$build_exeext; then
2006 gcc_cv_objdump=./objdump$build_exeext
2007 elif test -x $OBJDUMP_FOR_TARGET; then
2008 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2010 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2013 AC_MSG_CHECKING(what objdump to use)
2014 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2015 # Single tree build which includes binutils.
2016 AC_MSG_RESULT(newly built objdump)
2017 elif test x$gcc_cv_objdump = x; then
2018 AC_MSG_RESULT(not found)
2020 AC_MSG_RESULT($gcc_cv_objdump)
2023 # Figure out what readelf we will be using.
2024 AS_VAR_SET_IF(gcc_cv_readelf,, [
2025 if test -f $gcc_cv_binutils_srcdir/configure.in \
2026 && test -f ../binutils/Makefile \
2027 && test x$build = x$host; then
2028 # Single tree build which includes binutils.
2029 gcc_cv_readelf=../binutils/readelf$build_exeext
2030 elif test -x readelf$build_exeext; then
2031 gcc_cv_readelf=./readelf$build_exeext
2033 AC_PATH_PROG(gcc_cv_readelf, readelf)
2036 AC_MSG_CHECKING(what readelf to use)
2037 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2038 # Single tree build which includes binutils.
2039 AC_MSG_RESULT(newly built readelf)
2040 elif test x$gcc_cv_readelf = x; then
2041 AC_MSG_RESULT(not found)
2043 AC_MSG_RESULT($gcc_cv_readelf)
2046 # Figure out what assembler alignment features are present.
2047 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2051 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2052 [Define if your assembler supports .balign and .p2align.])])
2054 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2057 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2058 [Define if your assembler supports specifying the maximum number
2059 of bytes to skip when using the GAS .p2align command.])])
2061 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2064 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2065 [Define if your assembler supports .literal16.])])
2067 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2069 [conftest_label1: .word 0
2071 conftest_label2: .word 0
2073 [if test x$gcc_cv_nm != x; then
2074 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2075 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2076 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2078 else gcc_cv_as_subsection_m1=yes
2080 rm -f conftest.nm1 conftest.nm2
2082 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2083 [Define if your assembler supports .subsection and .subsection -1 starts
2084 emitting at the beginning of your section.])])
2086 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2089 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2091 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2093 [ .weakref foobar, barfnot],,
2094 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2096 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2099 .NSUBSPA $CODE$,COMDAT],,
2100 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2102 # .hidden needs to be supported in both the assembler and the linker,
2103 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2104 # This is irritatingly difficult to feature test for; we have to check the
2105 # date string after the version number. If we've got an in-tree
2106 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2108 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2109 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2114 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2115 [if test $in_tree_ld = yes ; then
2117 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2118 && test $in_tree_ld_is_elf = yes; then
2119 gcc_cv_ld_hidden=yes
2123 gcc_cv_ld_hidden=yes
2124 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2125 if echo "$ld_ver" | grep GNU > /dev/null; then
2126 ld_vers=`echo $ld_ver | sed -n \
2127 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2128 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2129 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2130 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2131 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2132 if test 0"$ld_date" -lt 20020404; then
2133 if test -n "$ld_date"; then
2134 # If there was date string, but was earlier than 2002-04-04, fail
2136 elif test -z "$ld_vers"; then
2137 # If there was no date string nor ld version number, something is wrong
2140 test -z "$ld_vers_patch" && ld_vers_patch=0
2141 if test "$ld_vers_major" -lt 2; then
2143 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2144 gcc_cv_ld_hidden="no"
2145 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2152 hppa64*-*-hpux* | ia64*-*-hpux*)
2153 gcc_cv_ld_hidden=yes
2155 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2156 gcc_cv_ld_hidden=yes
2165 libgcc_visibility=no
2166 AC_SUBST(libgcc_visibility)
2167 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2168 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2169 libgcc_visibility=yes
2170 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2171 [Define if your assembler and linker support .hidden.])
2174 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2175 gcc_cv_ld_ro_rw_mix=unknown
2176 if test $in_tree_ld = yes ; then
2177 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2178 && test $in_tree_ld_is_elf = yes; then
2179 gcc_cv_ld_ro_rw_mix=read-write
2181 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2182 echo '.section myfoosect, "a"' > conftest1.s
2183 echo '.section myfoosect, "aw"' > conftest2.s
2184 echo '.byte 1' >> conftest2.s
2185 echo '.section myfoosect, "a"' > conftest3.s
2186 echo '.byte 0' >> conftest3.s
2187 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2188 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2189 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2190 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2191 conftest2.o conftest3.o > /dev/null 2>&1; then
2192 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2193 | sed -e '/myfoosect/!d' -e N`
2194 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2195 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2196 gcc_cv_ld_ro_rw_mix=read-only
2198 gcc_cv_ld_ro_rw_mix=read-write
2203 rm -f conftest.* conftest[123].*
2206 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2207 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2208 [Define if your linker links a mix of read-only
2209 and read-write sections into a read-write section.])
2211 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2213 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2214 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2222 [# GAS versions before 2.11 do not support uleb128,
2223 # despite appearing to.
2224 # ??? There exists an elf-specific test that will crash
2225 # the assembler. Perhaps it's better to figure out whether
2226 # arbitrary sections are supported and try the test.
2227 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2228 if echo "$as_ver" | grep GNU > /dev/null; then
2230 as_vers=`echo $as_ver | sed -n \
2231 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2232 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2233 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2235 if test $as_major -eq 2 && test $as_minor -lt 11
2237 else gcc_cv_as_leb128=yes
2240 [AC_DEFINE(HAVE_AS_LEB128, 1,
2241 [Define if your assembler supports .sleb128 and .uleb128.])])
2243 # Check if we have assembler support for unwind directives.
2244 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2251 .cfi_escape 1, 2, 3, 4, 5
2255 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2256 # read-only and read-write sections, we need to make sure that the
2257 # assembler used emits read-write .eh_frame sections.
2258 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2259 if test "x$gcc_cv_objdump" != x; then
2260 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2261 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2262 gcc_cv_as_cfi_directive=no
2264 gcc_cv_as_cfi_directive=yes
2267 # no objdump, err on the side of caution
2268 gcc_cv_as_cfi_directive=no
2271 gcc_cv_as_cfi_directive=yes
2275 gcc_cv_as_cfi_directive=yes
2278 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_readelf != x; then
2279 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2283 .cfi_adjust_cfa_offset 64
2285 .cfi_adjust_cfa_offset 128
2289 if $gcc_cv_readelf -wf conftest.o 2>/dev/null \
2290 | grep 'DW_CFA_advance_loc[12]:[ ][ ]*512[ ]' >/dev/null; then
2291 gcc_cv_as_cfi_advance_working=yes
2296 # no readelf, err on the side of caution
2297 gcc_cv_as_cfi_advance_working=no
2299 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2300 [`if test $gcc_cv_as_cfi_directive = yes \
2301 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2302 [Define 0/1 if your assembler supports CFI directives.])
2304 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2305 gcc_cv_as_cfi_personality_directive, ,,
2308 .cfi_personality 0, symbol
2310 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2311 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2312 then echo 1; else echo 0; fi`],
2313 [Define 0/1 if your assembler supports .cfi_personality.])
2315 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2316 gcc_cv_as_cfi_sections_directive, ,,
2318 .cfi_sections .debug_frame, .eh_frame
2321 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2322 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2323 then echo 1; else echo 0; fi`],
2324 [Define 0/1 if your assembler supports .cfi_sections.])
2326 # GAS versions up to and including 2.11.0 may mis-optimize
2328 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2336 .section .eh_frame,"aw",@progbits
2338 .4byte .LECIE1-.LSCIE1
2352 .4byte .LEFDE1-.LASFDE1
2354 .4byte .LASFDE1-__FRAME_BEGIN__
2362 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2363 cat > conftest.lit <<EOF
2364 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2365 0010 01000000 12000000 18000000 00000000 ................
2366 0020 08000000 04080000 0044 .........D @&t@
2368 cat > conftest.big <<EOF
2369 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2370 0010 00000001 00000012 00000018 00000000 ................
2371 0020 00000008 04000000 0844 .........D @&t@
2373 # If the assembler didn't choke, and we can objdump,
2374 # and we got the correct data, then succeed.
2375 # The text in the here-document typically retains its unix-style line
2376 # endings, while the output of objdump will use host line endings.
2377 # Therefore, use diff -b for the comparisons.
2378 if test x$gcc_cv_objdump != x \
2379 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2380 | tail -3 > conftest.got \
2381 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2382 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2384 gcc_cv_as_eh_frame=yes
2385 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2386 gcc_cv_as_eh_frame=buggy
2388 # Uh oh, what do we do now?
2389 gcc_cv_as_eh_frame=no
2392 if test $gcc_cv_as_eh_frame = buggy; then
2393 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2394 [Define if your assembler mis-optimizes .eh_frame data.])
2397 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2398 [elf,2,12,0], [--fatal-warnings],
2399 [.section .rodata.str, "aMS", @progbits, 1])
2400 if test $gcc_cv_as_shf_merge = no; then
2401 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2402 [elf,2,12,0], [--fatal-warnings],
2403 [.section .rodata.str, "aMS", %progbits, 1])
2405 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2406 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2407 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2409 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2410 [elf,2,16,0], [--fatal-warnings],
2411 [.section .text,"axG",@progbits,.foo,comdat])
2412 if test $gcc_cv_as_comdat_group = yes; then
2413 gcc_cv_as_comdat_group_percent=no
2415 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2416 [elf,2,16,0], [--fatal-warnings],
2417 [.section .text,"axG",%progbits,.foo,comdat])
2419 if test $in_tree_ld = yes ; then
2421 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2422 && test $in_tree_ld_is_elf = yes; then
2425 elif test x"$ld_vers" != x; then
2427 if test 0"$ld_date" -lt 20050308; then
2428 if test -n "$ld_date"; then
2429 # If there was date string, but was earlier than 2005-03-08, fail
2431 elif test "$ld_vers_major" -lt 2; then
2433 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2438 # assume linkers other than GNU ld don't support COMDAT group
2441 if test $comdat_group = no; then
2442 gcc_cv_as_comdat_group=no
2443 gcc_cv_as_comdat_group_percent=no
2445 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2446 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2447 [Define 0/1 if your assembler and linker support COMDAT groups.])
2449 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2450 gcc_cv_as_discriminator,
2454 .loc 1 1 0 discriminator 1],,
2455 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2456 [Define if your assembler supports the .loc discriminator sub-directive.])])
2458 # Thread-local storage - the check is heavily parameterized.
2467 .section ".tdata","awT",@progbits
2470 ldq $27,__tls_get_addr($29) !literal!1
2471 lda $16,foo($29) !tlsgd!1
2472 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2473 ldq $27,__tls_get_addr($29) !literal!2
2474 lda $16,foo($29) !tlsldm!2
2475 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2476 ldq $1,foo($29) !gotdtprel
2477 ldah $2,foo($29) !dtprelhi
2478 lda $3,foo($2) !dtprello
2479 lda $4,foo($29) !dtprel
2480 ldq $1,foo($29) !gottprel
2481 ldah $2,foo($29) !tprelhi
2482 lda $3,foo($2) !tprello
2483 lda $4,foo($29) !tprel'
2486 tls_as_opt=--fatal-warnings
2488 cris-*-*|crisv32-*-*)
2490 .section ".tdata","awT",@progbits
2497 tls_as_opt=--fatal-warnings
2501 .section ".tdata","awT",@progbits
2513 .section ".tdata","awT",@progbits
2517 addil LT%foo-$tls_gdidx$,gp
2518 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2521 addil LT%foo-$tls_ldidx$,gp
2523 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2524 addil LR%foo-$tls_dtpoff$,%ret0
2525 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2527 addil LT%foo-$tls_ieoff$,gp
2528 ldw RT%foo-$tls_ieoff$(%r1),%t2
2531 addil LR%foo-$tls_leoff$,%t1
2532 ldo RR%foo-$tls_leoff$(%r1),%t2'
2535 tls_as_opt=--fatal-warnings
2539 .section ".tdata","awT",%progbits
2552 .section ".tdata","awT",@progbits
2556 leal foo@TLSGD(,%ebx,1), %eax
2557 leal foo@TLSLDM(%ebx), %eax
2558 leal foo@DTPOFF(%eax), %edx
2559 movl foo@GOTTPOFF(%ebx), %eax
2560 subl foo@GOTTPOFF(%ebx), %eax
2561 addl foo@GOTNTPOFF(%ebx), %eax
2562 movl foo@INDNTPOFF, %eax
2563 movl $foo@TPOFF, %eax
2564 subl $foo@TPOFF, %eax
2565 leal foo@NTPOFF(%ecx), %eax'
2568 tls_as_opt=--fatal-warnings
2572 .section ".tdata","awT",@progbits
2576 leaq foo@TLSGD(%rip), %rdi
2577 leaq foo@TLSLD(%rip), %rdi
2578 leaq foo@DTPOFF(%rax), %rdx
2579 movq foo@GOTTPOFF(%rip), %rax
2580 movq $foo@TPOFF, %rax'
2583 tls_as_opt=--fatal-warnings
2587 .section ".tdata","awT",@progbits
2590 addl r16 = @ltoff(@dtpmod(foo#)), gp
2591 addl r17 = @ltoff(@dtprel(foo#)), gp
2592 addl r18 = @ltoff(@tprel(foo#)), gp
2593 addl r19 = @dtprel(foo#), gp
2594 adds r21 = @dtprel(foo#), r13
2595 movl r23 = @dtprel(foo#)
2596 addl r20 = @tprel(foo#), gp
2597 adds r22 = @tprel(foo#), r13
2598 movl r24 = @tprel(foo#)'
2601 tls_as_opt=--fatal-warnings
2605 .section .tdata,"awT",@progbits
2609 addiu $4, $28, %tlsgd(x)
2610 addiu $4, $28, %tlsldm(x)
2611 lui $4, %dtprel_hi(x)
2612 addiu $4, $4, %dtprel_lo(x)
2613 lw $4, %gottprel(x)($28)
2614 lui $4, %tprel_hi(x)
2615 addiu $4, $4, %tprel_lo(x)'
2618 tls_as_opt='-32 --fatal-warnings'
2622 .section .tdata,"awT",@progbits
2627 move.l x@TLSGD(%a5),%a0
2628 move.l x@TLSLDM(%a5),%a0
2629 move.l x@TLSLDO(%a5),%a0
2630 move.l x@TLSIE(%a5),%a0
2631 move.l x@TLSLE(%a5),%a0'
2634 tls_as_opt='--fatal-warnings'
2638 .section ".tdata","awT",@progbits
2646 addi 3,31,ld0@got@tlsgd
2648 addi 3,31,x1@got@tlsld
2651 addis 9,3,x2@dtprel@ha
2652 addi 9,9,x2@dtprel@l
2653 lwz 9,x3@got@tprel(31)
2656 addis 9,2,x2@tprel@ha
2657 addi 9,9,x2@tprel@l'
2660 tls_as_opt="-a32 --fatal-warnings"
2664 .section ".tdata","awT",@progbits
2672 addi 3,2,ld0@got@tlsgd
2678 addi 3,2,x1@got@tlsld
2684 addis 9,3,x2@dtprel@ha
2685 addi 9,9,x2@dtprel@l
2688 ld 9,x3@got@dtprel(2)
2694 tls_as_opt="-a64 --fatal-warnings"
2698 .section ".tdata","awT",@progbits
2707 l %r1,foo@GOTNTPOFF(%r12)
2708 l %r1,0(%r1):tls_load:foo
2709 bas %r14,0(%r1,%r13):tls_gdcall:foo
2710 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2713 tls_as_opt="-m31 --fatal-warnings"
2717 .section ".tdata","awT",@progbits
2725 lg %r1,foo@GOTNTPOFF(%r12)
2726 larl %r1,foo@INDNTPOFF
2727 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2728 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2731 tls_as_opt="-m64 -Aesame --fatal-warnings"
2733 sh-*-* | sh[34]-*-*)
2735 .section ".tdata","awT",@progbits
2745 tls_as_opt=--fatal-warnings
2749 sparc*-sun-solaris2.[56789]*)
2750 # TLS was introduced in the Solaris 9 4/04 release but
2751 # we do not enable it by default on Solaris 9 either.
2752 if test "x$enable_tls" = xyes ; then
2758 sparc*-sun-solaris2.*)
2765 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2767 .section ".tdata",#alloc,#write,#tls
2770 sethi %tgd_hi22(foo), %o0
2771 add %o0, %tgd_lo10(foo), %o1
2772 add %l7, %o1, %o0, %tgd_add(foo)
2773 call __tls_get_addr, %tgd_call(foo)
2774 sethi %tldm_hi22(foo), %l1
2775 add %l1, %tldm_lo10(foo), %l2
2776 add %l7, %l2, %o0, %tldm_add(foo)
2777 call __tls_get_addr, %tldm_call(foo)
2778 sethi %tldo_hix22(foo), %l3
2779 xor %l3, %tldo_lox10(foo), %l4
2780 add %o0, %l4, %l5, %tldo_add(foo)
2781 sethi %tie_hi22(foo), %o3
2782 add %o3, %tie_lo10(foo), %o3
2783 ld [%l7 + %o3], %o2, %tie_ld(foo)
2784 add %g7, %o2, %o4, %tie_add(foo)
2785 sethi %tle_hix22(foo), %l1
2786 xor %l1, %tle_lox10(foo), %o5
2787 ld [%g7 + %o5], %o1'
2792 .section ".tdata","awT",@progbits
2795 sethi %tgd_hi22(foo), %o0
2796 add %o0, %tgd_lo10(foo), %o1
2797 add %l7, %o1, %o0, %tgd_add(foo)
2798 call __tls_get_addr, %tgd_call(foo)
2799 sethi %tldm_hi22(foo), %l1
2800 add %l1, %tldm_lo10(foo), %l2
2801 add %l7, %l2, %o0, %tldm_add(foo)
2802 call __tls_get_addr, %tldm_call(foo)
2803 sethi %tldo_hix22(foo), %l3
2804 xor %l3, %tldo_lox10(foo), %l4
2805 add %o0, %l4, %l5, %tldo_add(foo)
2806 sethi %tie_hi22(foo), %o3
2807 add %o3, %tie_lo10(foo), %o3
2808 ld [%l7 + %o3], %o2, %tie_ld(foo)
2809 add %g7, %o2, %o4, %tie_add(foo)
2810 sethi %tle_hix22(foo), %l1
2811 xor %l1, %tle_lox10(foo), %o5
2812 ld [%g7 + %o5], %o1'
2815 tls_as_opt="-32 --fatal-warnings"
2820 .section ".tdata","awT",@progbits
2823 movi a8, foo@TLSFUNC
2824 movi a10, foo@TLSARG
2825 callx8.tls a8, foo@TLSCALL'
2832 if test "x$enable_tls" = xno ; then
2833 : # TLS explicitly disabled.
2834 elif test "x$enable_tls" = xyes ; then
2835 set_have_as_tls=yes # TLS explicitly enabled.
2836 elif test -z "$tls_first_major"; then
2837 : # If we don't have a check, assume no support.
2839 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2840 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2841 [set_have_as_tls=yes])
2843 if test $set_have_as_tls = yes ; then
2844 AC_DEFINE(HAVE_AS_TLS, 1,
2845 [Define if your assembler supports thread-local storage.])
2848 # Target-specific assembler checks.
2850 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2851 gcc_cv_ld_static_dynamic=no
2852 if test $in_tree_ld = yes ; then
2853 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
2854 gcc_cv_ld_static_dynamic=yes
2856 elif test x$gcc_cv_ld != x; then
2857 # Check if linker supports -Bstatic/-Bdynamic option
2858 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2859 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2860 gcc_cv_ld_static_dynamic=yes
2863 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2864 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2865 [Define if your linker supports -Bstatic/-Bdynamic option.])
2867 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2869 if test x"$demangler_in_ld" = xyes; then
2870 AC_MSG_CHECKING(linker --demangle support)
2871 gcc_cv_ld_demangle=no
2872 if test $in_tree_ld = yes; then
2873 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2874 gcc_cv_ld_demangle=yes
2876 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2877 # Check if the GNU linker supports --demangle option
2878 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2879 gcc_cv_ld_demangle=yes
2882 if test x"$gcc_cv_ld_demangle" = xyes; then
2883 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2884 [Define if your linker supports --demangle option.])
2886 AC_MSG_RESULT($gcc_cv_ld_demangle)
2890 # All TARGET_ABI_OSF targets.
2891 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2892 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2893 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2896 extbl $3, $2, $3 !lituse_bytoff!1
2897 ldq $2, a($29) !literal!1
2898 ldq $4, b($29) !literal!2
2899 ldq_u $3, 0($2) !lituse_base!1
2900 ldq $27, f($29) !literal!5
2901 jsr $26, ($27), f !lituse_jsr!5
2902 ldah $29, 0($26) !gpdisp!3
2903 lda $0, c($29) !gprel
2904 ldah $1, d($29) !gprelhigh
2905 lda $1, d($1) !gprellow
2906 lda $29, 0($29) !gpdisp!3],,
2907 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2908 [Define if your assembler supports explicit relocations.])])
2909 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2910 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2913 ldq $27, a($29) !literal!1
2914 jsr $26, ($27), a !lituse_jsrdirect!1],,
2915 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2916 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2920 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2921 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2922 [-no-mul-bug-abort], [.text],,
2923 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2924 [Define if your assembler supports the -no-mul-bug-abort option.])])
2928 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2929 [.register %g2, #scratch],,
2930 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2931 [Define if your assembler supports .register.])])
2933 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2935 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2936 [Define if your assembler supports -relax option.])])
2938 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2939 gcc_cv_as_sparc_ua_pcrel,,
2947 .uaword %r_disp32(foo)],
2948 [if test x$gcc_cv_ld != x \
2949 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2950 gcc_cv_as_sparc_ua_pcrel=yes
2953 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2954 [Define if your assembler and linker support unaligned PC relative relocs.])
2956 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2957 gcc_cv_as_sparc_ua_pcrel_hidden,,
2962 .uaword %r_disp32(foo)
2963 .byte 0x32, 0x33, 0x34
2968 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2969 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2970 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2971 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2972 if $gcc_cv_objdump -R conftest 2> /dev/null \
2973 | grep 'DISP32' > /dev/null 2>&1; then
2976 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2980 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2981 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2982 ]) # unaligned pcrel relocs
2984 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2985 gcc_cv_as_sparc_offsetable_lo10,,
2988 or %g1, %lo(ab) + 12, %g1
2989 or %g1, %lo(ab + 12), %g1],
2990 [if test x$gcc_cv_objdump != x \
2991 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2992 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2993 gcc_cv_as_sparc_offsetable_lo10=yes
2995 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2996 [Define if your assembler supports offsetable %lo().])])
3000 i[34567]86-*-* | x86_64-*-*)
3004 # Full C++ conformance when using a shared libstdc++-v3 requires some
3005 # support from the Cygwin DLL, which in more recent versions exports
3006 # wrappers to aid in interposing and redirecting operators new, delete,
3007 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3008 # are configuring for a version of Cygwin that exports the wrappers.
3009 if test x$host = x$target; then
3010 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3012 # Can't check presence of libc functions during cross-compile, so
3013 # we just have to assume we're building for an up-to-date target.
3014 gcc_ac_cygwin_dll_wrappers=yes
3016 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3017 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3018 [Define if you want to generate code by default that assumes that the
3019 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3022 cygwin* | pe | mingw32*)
3023 # Recent binutils allows the three-operand form of ".comm" on PE. This
3024 # definition is used unconditionally to initialise the default state of
3025 # the target option variable that governs usage of the feature.
3026 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3027 [2,19,52],,[.comm foo,1,32])
3028 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3029 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3030 [Define if your assembler supports specifying the alignment
3031 of objects allocated using the GAS .comm command.])
3032 # Used for DWARF 2 in PE
3033 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3034 gcc_cv_as_ix86_pe_secrel32,
3040 [if test x$gcc_cv_ld != x \
3041 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3042 gcc_cv_as_ix86_pe_secrel32=yes
3045 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3046 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3050 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3051 gcc_cv_as_ix86_filds,,,
3052 [filds mem; fists mem],,
3053 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3054 [Define if your assembler uses filds and fists mnemonics.])])
3056 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3057 gcc_cv_as_ix86_fildq,,,
3058 [fildq mem; fistpq mem],,
3059 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3060 [Define if your assembler uses fildq and fistq mnemonics.])])
3062 gcc_GAS_CHECK_FEATURE([cmov syntax],
3063 gcc_cv_as_ix86_cmov_sun_syntax,,,
3064 [cmovl.l %edx, %eax],,
3065 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3066 [Define if your assembler supports the Sun syntax for cmov.])])
3068 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3069 gcc_cv_as_ix86_ffreep,,,
3071 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3072 [Define if your assembler supports the ffreep mnemonic.])])
3074 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3075 gcc_cv_as_ix86_sahf,,,
3077 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3078 [Define if your assembler supports the sahf mnemonic.])])
3080 gcc_GAS_CHECK_FEATURE([swap suffix],
3081 gcc_cv_as_ix86_swap,,,
3082 [movl.s %esp, %ebp],,
3083 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3084 [Define if your assembler supports the swap suffix.])])
3086 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3087 gcc_cv_as_ix86_diff_sect_delta,,,
3095 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3096 [Define if your assembler supports the subtraction of symbols in different sections.])])
3098 # This one is used unconditionally by i386.[ch]; it is to be defined
3099 # to 1 if the feature is present, 0 otherwise.
3100 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3101 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3107 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3108 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3109 [Define true if the assembler supports '.long foo@GOTOFF'.])
3113 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3114 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3116 addl r15 = @ltoffx(x#), gp
3118 ld8.mov r16 = [[r15]], x#],,
3119 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3120 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3126 *-*-aix*) conftest_s=' .machine "pwr5"
3130 gcc_GAS_CHECK_FEATURE([.machine directive support],
3131 gcc_cv_as_machine_directive,,,
3132 [ .machine ppc7400])
3133 if test x$gcc_cv_as_machine_directive != xyes; then
3134 echo "*** This target requires an assembler supporting \".machine\"" >&2
3135 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3136 test x$build = x$target && exit 1
3140 *) conftest_s=' .machine power4
3145 gcc_GAS_CHECK_FEATURE([mfcr field support],
3146 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3148 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3149 [Define if your assembler supports mfcr field.])])
3152 *-*-aix*) conftest_s=' .machine "pwr5"
3155 *) conftest_s=' .machine power5
3160 gcc_GAS_CHECK_FEATURE([popcntb support],
3161 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3163 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3164 [Define if your assembler supports popcntb field.])])
3167 *-*-aix*) conftest_s=' .machine "pwr5x"
3170 *) conftest_s=' .machine power5
3175 gcc_GAS_CHECK_FEATURE([fp round support],
3176 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3178 [AC_DEFINE(HAVE_AS_FPRND, 1,
3179 [Define if your assembler supports fprnd.])])
3182 *-*-aix*) conftest_s=' .machine "pwr6"
3185 *) conftest_s=' .machine power6
3190 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3191 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3193 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3194 [Define if your assembler supports mffgpr and mftgpr.])])
3197 *-*-aix*) conftest_s=' .csect .text[[PR]]
3199 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3203 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3204 *) conftest_s=' .text
3206 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3209 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3210 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3212 [AC_DEFINE(HAVE_AS_REL16, 1,
3213 [Define if your assembler supports R_PPC_REL16 relocs.])])
3216 *-*-aix*) conftest_s=' .machine "pwr6"
3219 *) conftest_s=' .machine power6
3224 gcc_GAS_CHECK_FEATURE([compare bytes support],
3225 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3227 [AC_DEFINE(HAVE_AS_CMPB, 1,
3228 [Define if your assembler supports cmpb.])])
3231 *-*-aix*) conftest_s=' .machine "pwr6"
3234 *) conftest_s=' .machine power6
3239 gcc_GAS_CHECK_FEATURE([decimal float support],
3240 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3242 [AC_DEFINE(HAVE_AS_DFP, 1,
3243 [Define if your assembler supports DFP instructions.])])
3246 *-*-aix*) conftest_s=' .machine "pwr7"
3249 *) conftest_s=' .machine power7
3254 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3255 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3257 [AC_DEFINE(HAVE_AS_VSX, 1,
3258 [Define if your assembler supports VSX instructions.])])
3261 *-*-aix*) conftest_s=' .machine "pwr7"
3264 *) conftest_s=' .machine power7
3269 gcc_GAS_CHECK_FEATURE([popcntd support],
3270 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3272 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3273 [Define if your assembler supports POPCNTD instructions.])])
3276 *-*-aix*) conftest_s=' .csect .text[[PR]]
3278 *) conftest_s=' .text
3282 gcc_GAS_CHECK_FEATURE([lwsync support],
3283 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3285 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3286 [Define if your assembler supports LWSYNC instructions.])])
3289 *-*-aix*) conftest_s=' .machine "476"
3292 *) conftest_s=' .machine "476"
3297 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3298 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3300 [AC_DEFINE(HAVE_AS_DCI, 1,
3301 [Define if your assembler supports the DCI/ICI instructions.])])
3303 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3304 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3305 [.gnu_attribute 4,1],,
3306 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3307 [Define if your assembler supports .gnu_attribute.])])
3309 gcc_GAS_CHECK_FEATURE([tls marker support],
3310 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3311 [ bl __tls_get_addr(x@tlsgd)],,
3312 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3313 [Define if your assembler supports arg info for __tls_get_addr.])])
3317 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3318 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3319 [ lw $4,%gp_rel(foo)($4)],,
3320 [if test x$target_cpu_default = x
3321 then target_cpu_default=MASK_EXPLICIT_RELOCS
3322 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3324 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3325 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3326 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3327 [Define if the assembler understands -mno-shared.])])
3329 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3330 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3331 [.gnu_attribute 4,1],,
3332 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3333 [Define if your assembler supports .gnu_attribute.])])
3335 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3336 gcc_cv_as_mips_dtprelword, [2,18,0],,
3337 [.section .tdata,"awT",@progbits
3341 .dtprelword x+0x8000],,
3342 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3343 [Define if your assembler supports .dtprelword.])])
3345 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3346 gcc_cv_as_ld_jalr_reloc=no
3347 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3348 if test $in_tree_ld = yes ; then
3349 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3350 && test $in_tree_ld_is_elf = yes; then
3351 gcc_cv_as_ld_jalr_reloc=yes
3353 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3354 echo ' .ent x' > conftest.s
3355 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3356 echo ' ld $25,%call16(y)($28)' >> conftest.s
3357 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3358 echo '1: jalr $25' >> conftest.s
3359 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3360 echo '1: jalr $25' >> conftest.s
3361 echo ' .end x' >> conftest.s
3362 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3363 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3364 if $gcc_cv_objdump -d conftest.so | grep -q jalr \
3365 && $gcc_cv_objdump -d conftest.so | grep -q "bal.*<x>"; then
3366 gcc_cv_as_ld_jalr_reloc=yes
3372 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3373 if test x$target_cpu_default = x; then
3374 target_cpu_default=MASK_RELAX_PIC_CALLS
3376 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3379 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3381 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3382 [gcc_cv_ld_mips_personality_relaxation],
3383 [gcc_cv_ld_mips_personality_relaxation=no
3384 if test $in_tree_ld = yes ; then
3385 if test "$gcc_cv_gld_major_version" -eq 2 \
3386 -a "$gcc_cv_gld_minor_version" -ge 21 \
3387 -o "$gcc_cv_gld_major_version" -gt 2; then
3388 gcc_cv_ld_mips_personality_relaxation=yes
3390 elif test x$gcc_cv_as != x \
3391 -a x$gcc_cv_ld != x \
3392 -a x$gcc_cv_readelf != x ; then
3393 cat > conftest.s <<EOF
3395 .cfi_personality 0x80,indirect_ptr
3402 .section .data,"aw",@progbits
3406 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3407 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3408 if $gcc_cv_readelf -d conftest 2>&1 \
3409 | grep TEXTREL > /dev/null 2>&1; then
3411 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3412 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3415 gcc_cv_ld_mips_personality_relaxation=yes
3419 rm -f conftest.s conftest.o conftest])
3420 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3421 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3422 [Define if your linker can relax absolute .eh_frame personality
3423 pointers into PC-relative form.])
3428 # Mips and HP-UX need the GNU assembler.
3429 # Linux on IA64 might be able to use the Intel assembler.
3432 mips*-*-* | *-*-hpux* )
3433 if test x$gas_flag = xyes \
3434 || test x"$host" != x"$build" \
3435 || test ! -x "$gcc_cv_as" \
3436 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3439 echo "*** This configuration requires the GNU assembler" >&2
3445 # ??? Not all targets support dwarf2 debug_line, even within a version
3446 # of gas. Moreover, we need to emit a valid instruction to trigger any
3447 # info to the output file. So, as supported targets are added to gas 2.11,
3448 # add some instruction here to (also) show we expect this might work.
3449 # ??? Once 2.11 is released, probably need to add first known working
3450 # version to the per-target configury.
3452 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3453 | x86_64*-*-* | hppa*-*-* | arm*-*-* \
3454 | xstormy16*-*-* | cris-*-* | crisv32-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \
3455 | spu-*-* | fido*-*-* | m32c-*-*)
3458 ia64*-*-* | s390*-*-*)
3465 if test x"$insn" != x; then
3467 .file 1 \"conftest.s\"
3470 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3471 gcc_cv_as_dwarf2_debug_line,
3472 [elf,2,11,0],, [$conftest_s],
3473 [if test x$gcc_cv_objdump != x \
3474 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3475 | grep debug_line > /dev/null 2>&1; then
3476 gcc_cv_as_dwarf2_debug_line=yes
3479 # The .debug_line file table must be in the exact order that
3480 # we specified the files, since these indices are also used
3481 # by DW_AT_decl_file. Approximate this test by testing if
3482 # the assembler bitches if the same index is assigned twice.
3483 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3484 gcc_cv_as_dwarf2_file_buggy,,,
3488 if test $gcc_cv_as_dwarf2_debug_line = yes \
3489 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3490 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3491 [Define if your assembler supports dwarf2 .file/.loc directives,
3492 and preserves file table indices exactly as given.])
3495 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3496 gcc_cv_as_gdwarf2_flag,
3497 [elf,2,11,0], [--gdwarf2], [$insn],,
3498 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3499 [Define if your assembler supports the --gdwarf2 option.])])
3501 gcc_GAS_CHECK_FEATURE([--gstabs option],
3502 gcc_cv_as_gstabs_flag,
3503 [elf,2,11,0], [--gstabs], [$insn],
3504 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3505 # and warns about it, but still exits successfully. So check for
3507 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3509 else gcc_cv_as_gstabs_flag=yes
3511 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3512 [Define if your assembler supports the --gstabs option.])])
3514 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3515 gcc_cv_as_debug_prefix_map_flag,
3516 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3517 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3518 [Define if your assembler supports the --debug-prefix-map option.])])
3521 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3524 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3525 [Define if your assembler supports .lcomm with an alignment field.])])
3527 AC_ARG_ENABLE(gnu-unique-object,
3528 [ --enable-gnu-unique-object enable the use of the @gnu_unique_object ELF extension on
3530 [case $enable_gnu_unique_object in
3532 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
3533 Valid choices are 'yes' and 'no'.]) ;;
3535 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
3537 [.type foo, @gnu_unique_object],,
3538 # Also check for ld.so support, i.e. glibc 2.11 or higher.
3539 [if test x$host = x$build -a x$host = x$target &&
3540 glibcver=`ldd --version 2>/dev/null`; then
3541 glibcmajor=`expr "$glibcver" : "ldd (GNU libc) \([[0-9]]*\)"`
3542 glibcminor=`expr "$glibcver" : "ldd (GNU libc) [[0-9]]*\.\([[0-9]]*\)"`
3543 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
3544 if test "$glibcnum" -ge 2011 ; then
3545 enable_gnu_unique_object=yes
3548 if test x$enable_gnu_unique_object = xyes; then
3549 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
3550 [Define if your assembler supports @gnu_unique_object.])
3553 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3554 [gcc_cv_as_line_zero],
3555 [gcc_cv_as_line_zero=no
3556 if test $in_tree_gas = yes; then
3557 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3558 elif test "x$gcc_cv_as" != x; then
3559 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3560 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3561 test "x`cat conftest.out`" = x
3563 gcc_cv_as_line_zero=yes
3565 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3566 cat conftest.s >&AS_MESSAGE_LOG_FD
3567 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3568 cat conftest.out >&AS_MESSAGE_LOG_FD
3570 rm -f conftest.o conftest.s conftest.out
3572 if test "x$gcc_cv_as_line_zero" = xyes; then
3573 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3574 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3577 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3578 gcc_cv_ld_eh_frame_hdr=no
3579 if test $in_tree_ld = yes ; then
3580 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3581 && test $in_tree_ld_is_elf = yes; then
3582 gcc_cv_ld_eh_frame_hdr=yes
3584 elif test x$gcc_cv_ld != x; then
3585 # Check if linker supports --eh-frame-hdr option
3586 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3587 gcc_cv_ld_eh_frame_hdr=yes
3590 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3591 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3592 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3593 [Define if your linker supports --eh-frame-hdr option.])
3595 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3597 AC_MSG_CHECKING(linker position independent executable support)
3599 if test $in_tree_ld = yes ; then
3600 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3601 && test $in_tree_ld_is_elf = yes; then
3604 elif test x$gcc_cv_ld != x; then
3605 # Check if linker supports -pie option
3606 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3610 if test x"$gcc_cv_ld_pie" = xyes; then
3611 AC_DEFINE(HAVE_LD_PIE, 1,
3612 [Define if your linker supports -pie option.])
3614 AC_MSG_RESULT($gcc_cv_ld_pie)
3616 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3617 gcc_cv_ld_eh_gc_sections=no
3618 if test $in_tree_ld = yes ; then
3619 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3620 && test $in_tree_ld_is_elf = yes; then
3621 gcc_cv_ld_eh_gc_sections=yes
3623 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3624 cat > conftest.s <<EOF
3627 .type _start, @function