2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
5 # 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
7 #This file is part of GCC.
9 #GCC is free software; you can redistribute it and/or modify it under
10 #the terms of the GNU General Public License as published by the Free
11 #Software Foundation; either version 3, or (at your option) any later
14 #GCC is distributed in the hope that it will be useful, but WITHOUT
15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 #You should have received a copy of the GNU General Public License
20 #along with GCC; see the file COPYING3. If not see
21 #<http://www.gnu.org/licenses/>.
23 # --------------------------------
24 # Initialization and sanity checks
25 # --------------------------------
29 AC_CONFIG_SRCDIR(tree.c)
30 AC_CONFIG_HEADER(auto-host.h:config.in)
32 gcc_version=`cat $srcdir/BASE-VER`
34 # Determine the host, build, and target systems
39 # Determine the noncanonical target name, for directory use.
40 ACX_NONCANONICAL_TARGET
42 # Determine the target- and build-specific subdirectories
45 # Set program_transform_name
48 # Check for bogus environment variables.
49 # Test if LIBRARY_PATH contains the notation for the current directory
50 # since this would lead to problems installing/building glibc.
51 # LIBRARY_PATH contains the current directory if one of the following
53 # - one of the terminals (":" and ";") is the first or last sign
54 # - two terminals occur directly after each other
55 # - the path contains an element with a dot in it
56 AC_MSG_CHECKING(LIBRARY_PATH variable)
58 case ${LIBRARY_PATH} in
59 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
60 library_path_setting="contains current directory"
63 library_path_setting="ok"
67 AC_MSG_RESULT($library_path_setting)
68 if test "$library_path_setting" != "ok"; then
70 *** LIBRARY_PATH shouldn't contain the current directory when
71 *** building gcc. Please change the environment variable
72 *** and run configure again.])
75 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
76 # since this would lead to problems installing/building glibc.
77 # GCC_EXEC_PREFIX contains the current directory if one of the following
79 # - one of the terminals (":" and ";") is the first or last sign
80 # - two terminals occur directly after each other
81 # - the path contains an element with a dot in it
82 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
84 case ${GCC_EXEC_PREFIX} in
85 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
86 gcc_exec_prefix_setting="contains current directory"
89 gcc_exec_prefix_setting="ok"
93 AC_MSG_RESULT($gcc_exec_prefix_setting)
94 if test "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [ --with-local-prefix=DIR specifies directory to put local include],
109 [case "${withval}" in
110 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
112 *) local_prefix=$with_local_prefix ;;
115 # Default local prefix if it is empty
116 if test x$local_prefix = x; then
117 local_prefix=/usr/local
120 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
121 # passed in by the toplevel make and thus we'd get different behavior
122 # depending on where we built the sources.
124 # Specify the g++ header file directory
125 AC_ARG_WITH(gxx-include-dir,
126 [ --with-gxx-include-dir=DIR
127 specifies directory to put g++ header files],
128 [case "${withval}" in
129 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
131 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
134 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
135 if test x${gcc_gxx_include_dir} = x; then
136 if test x${enable_version_specific_runtime_libs} = xyes; then
137 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 libstdcxx_incdir='include/c++/$(version)'
140 if test x$host != x$target; then
141 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
143 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
147 AC_ARG_WITH(cpp_install_dir,
148 [ --with-cpp-install-dir=DIR
149 install the user visible C preprocessor in DIR
150 (relative to PREFIX) as well as PREFIX/bin],
151 [if test x$withval = xyes; then
152 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
153 elif test x$withval != xno; then
154 cpp_install_dir=$withval
157 # We would like to our source tree to be readonly. However when releases or
158 # pre-releases are generated, the flex/bison generated files as well as the
159 # various formats of manuals need to be included along with the rest of the
160 # sources. Therefore we have --enable-generated-files-in-srcdir to do
163 AC_MSG_CHECKING([whether to place generated files in the source directory])
164 dnl generated-files-in-srcdir is disabled by default
165 AC_ARG_ENABLE(generated-files-in-srcdir,
166 [ --enable-generated-files-in-srcdir
167 put copies of generated files in source dir
168 intended for creating source tarballs for users
169 without texinfo bison or flex.],
170 generated_files_in_srcdir=$enableval,
171 generated_files_in_srcdir=no)
173 AC_MSG_RESULT($generated_files_in_srcdir)
175 if test "$generated_files_in_srcdir" = "yes"; then
182 # -------------------
183 # Find default linker
184 # -------------------
188 [ --with-gnu-ld arrange to work with GNU ld.],
189 gnu_ld_flag="$with_gnu_ld",
192 # With pre-defined ld
194 [ --with-ld arrange to use the specified ld (full pathname)],
195 DEFAULT_LINKER="$with_ld")
196 if test x"${DEFAULT_LINKER+set}" = x"set"; then
197 if test ! -x "$DEFAULT_LINKER"; then
198 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
199 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
202 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
203 [Define to enable the use of a default linker.])
206 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
207 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
209 AC_MSG_CHECKING([whether a default linker was specified])
210 if test x"${DEFAULT_LINKER+set}" = x"set"; then
211 if test x"$gnu_ld_flag" = x"no"; then
212 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
214 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
220 # With demangler in GNU ld
221 AC_ARG_WITH(demangler-in-ld,
222 [ --with-demangler-in-ld try to use demangler in GNU ld.],
223 demangler_in_ld="$with_demangler_in_ld",
226 # ----------------------
227 # Find default assembler
228 # ----------------------
232 [ --with-gnu-as arrange to work with GNU as],
233 gas_flag="$with_gnu_as",
237 [ --with-as arrange to use the specified as (full pathname)],
238 DEFAULT_ASSEMBLER="$with_as")
239 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
240 if test ! -x "$DEFAULT_ASSEMBLER"; then
241 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
242 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
245 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
246 [Define to enable the use of a default assembler.])
249 gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
250 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
252 AC_MSG_CHECKING([whether a default assembler was specified])
253 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
254 if test x"$gas_flag" = x"no"; then
255 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
257 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
267 # If a non-executable a.out is present (e.g. created by GNU as above even if
268 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
269 # file, even when creating an executable, so an execution test fails.
270 # Remove possible default executable files to avoid this.
272 # FIXME: This really belongs into AC_PROG_CC and can be removed once
273 # Autoconf includes it.
274 rm -f a.out a.exe b.out
276 # Find the native compiler
280 ACX_PROG_GNAT([-I"$srcdir"/ada])
282 # autoconf is lame and doesn't give us any substitution variable for this.
283 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
284 NO_MINUS_C_MINUS_O=yes
286 OUTPUT_OPTION='-o $@'
288 AC_SUBST(NO_MINUS_C_MINUS_O)
289 AC_SUBST(OUTPUT_OPTION)
291 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
292 # optimizations to be activated explicitly by the toplevel.
295 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
299 # -------------------------
300 # Check C compiler features
301 # -------------------------
303 AC_USE_SYSTEM_EXTENSIONS
307 # sizeof(char) is 1 by definition.
308 AC_CHECK_SIZEOF(void *)
309 AC_CHECK_SIZEOF(short)
311 AC_CHECK_SIZEOF(long)
312 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
313 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
316 # ---------------------
317 # Warnings and checking
318 # ---------------------
320 # Check $CC warning features (if it's GCC).
321 # We want to use -pedantic, but we don't want warnings about
325 # So, we only use -pedantic if we can disable those warnings.
327 ACX_PROG_CC_WARNING_OPTS(
328 m4_quote(m4_do([-W -Wall -Wwrite-strings -Wcast-qual])), [loose_warn])
329 ACX_PROG_CC_WARNING_OPTS(
330 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
332 ACX_PROG_CC_WARNING_OPTS(
333 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
334 ACX_PROG_CC_WARNING_OPTS(
335 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
336 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
337 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
338 [-Wno-overlength-strings])), [strict_warn])
339 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
341 # The above macros do nothing if the compiler is not GCC. However, the
342 # Makefile has more goo to add other flags, so these variables are used
343 # to enable warnings only for GCC.
346 if test "x$GCC" = "xyes"; then
347 warn_cflags='$(GCC_WARN_CFLAGS)'
348 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
350 AC_SUBST(warn_cflags)
351 AC_SUBST(warn_cxxflags)
353 # Enable expensive internal checks
355 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
359 AC_ARG_ENABLE(checking,
360 [ --enable-checking[=LIST]
361 enable expensive run-time checks. With LIST,
362 enable only specific categories of checks.
363 Categories are: yes,no,all,none,release.
364 Flags are: assert,df,fold,gc,gcac,gimple,misc,
365 rtlflag,rtl,runtime,tree,valgrind,types.],
366 [ac_checking_flags="${enableval}"],[
367 # Determine the default checks.
368 if test x$is_release = x ; then
369 ac_checking_flags=yes
371 ac_checking_flags=release
373 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
374 for check in release $ac_checking_flags
377 # these set all the flags to specific states
378 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
379 ac_fold_checking= ; ac_gc_checking=1 ;
380 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
381 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
382 ac_tree_checking=1 ; ac_valgrind_checking= ;
383 ac_types_checking=1 ;;
384 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
385 ac_fold_checking= ; ac_gc_checking= ;
386 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
387 ac_rtlflag_checking= ; ac_runtime_checking= ;
388 ac_tree_checking= ; ac_valgrind_checking= ;
389 ac_types_checking= ;;
390 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
391 ac_fold_checking=1 ; ac_gc_checking=1 ;
392 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
393 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
394 ac_tree_checking=1 ; ac_valgrind_checking= ;
395 ac_types_checking=1 ;;
396 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
397 ac_fold_checking= ; ac_gc_checking= ;
398 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
399 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
400 ac_tree_checking= ; ac_valgrind_checking= ;
401 ac_types_checking= ;;
402 # these enable particular checks
403 assert) ac_assert_checking=1 ;;
404 df) ac_df_checking=1 ;;
405 fold) ac_fold_checking=1 ;;
406 gc) ac_gc_checking=1 ;;
407 gcac) ac_gc_always_collect=1 ;;
408 gimple) ac_gimple_checking=1 ;;
409 misc) ac_checking=1 ;;
410 rtl) ac_rtl_checking=1 ;;
411 rtlflag) ac_rtlflag_checking=1 ;;
412 runtime) ac_runtime_checking=1 ;;
413 tree) ac_tree_checking=1 ;;
414 types) ac_types_checking=1 ;;
415 valgrind) ac_valgrind_checking=1 ;;
416 *) AC_MSG_ERROR(unknown check category $check) ;;
422 if test x$ac_checking != x ; then
423 AC_DEFINE(ENABLE_CHECKING, 1,
424 [Define if you want more run-time sanity checks. This one gets a grab
425 bag of miscellaneous but relatively cheap checks.])
426 nocommon_flag=-fno-common
428 AC_SUBST(nocommon_flag)
429 if test x$ac_df_checking != x ; then
430 AC_DEFINE(ENABLE_DF_CHECKING, 1,
431 [Define if you want more run-time sanity checks for dataflow.])
433 if test x$ac_assert_checking != x ; then
434 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
435 [Define if you want assertions enabled. This is a cheap check.])
437 if test x$ac_gimple_checking != x ; then
438 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
439 [Define if you want operations on GIMPLE (the basic data structure of
440 the high-level optimizers) to be checked for dynamic type safety at
441 runtime. This is moderately expensive.])
443 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
444 if test x$ac_runtime_checking != x ; then
445 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
446 [Define if you want runtime assertions enabled. This is a cheap check.])
448 if test x$ac_tree_checking != x ; then
449 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
450 [Define if you want all operations on trees (the basic data
451 structure of the front ends) to be checked for dynamic type safety
452 at runtime. This is moderately expensive. The tree browser debugging
453 routines will also be enabled by this option.
455 TREEBROWSER=tree-browser.o
457 if test x$ac_types_checking != x ; then
458 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
459 [Define if you want all gimple types to be verified after gimplifiation.
463 AC_SUBST(TREEBROWSER)
464 if test x$ac_rtl_checking != x ; then
465 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
466 [Define if you want all operations on RTL (the basic data structure
467 of the optimizer and back end) to be checked for dynamic type safety
468 at runtime. This is quite expensive.])
470 if test x$ac_rtlflag_checking != x ; then
471 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
472 [Define if you want RTL flag accesses to be checked against the RTL
473 codes that are supported for each access macro. This is relatively
476 if test x$ac_gc_checking != x ; then
477 AC_DEFINE(ENABLE_GC_CHECKING, 1,
478 [Define if you want the garbage collector to do object poisoning and
479 other memory allocation checks. This is quite expensive.])
481 if test x$ac_gc_always_collect != x ; then
482 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
483 [Define if you want the garbage collector to operate in maximally
484 paranoid mode, validating the entire heap and collecting garbage at
485 every opportunity. This is extremely expensive.])
487 if test x$ac_fold_checking != x ; then
488 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
489 [Define if you want fold checked that it never destructs its argument.
490 This is quite expensive.])
492 valgrind_path_defines=
495 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
496 dnl # an if statement. This was the source of very frustrating bugs
497 dnl # in converting to autoconf 2.5x!
498 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
500 if test x$ac_valgrind_checking != x ; then
501 # It is certainly possible that there's valgrind but no valgrind.h.
502 # GCC relies on making annotations so we must have both.
503 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
504 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
505 [[#include <valgrind/memcheck.h>
506 #ifndef VALGRIND_DISCARD
507 #error VALGRIND_DISCARD not defined
509 [gcc_cv_header_valgrind_memcheck_h=yes],
510 [gcc_cv_header_valgrind_memcheck_h=no])
511 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
512 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
513 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
514 [[#include <memcheck.h>
515 #ifndef VALGRIND_DISCARD
516 #error VALGRIND_DISCARD not defined
518 [gcc_cv_header_memcheck_h=yes],
519 [gcc_cv_header_memcheck_h=no])
520 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
521 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
522 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
523 if test "x$valgrind_path" = "x" \
524 || (test $have_valgrind_h = no \
525 && test $gcc_cv_header_memcheck_h = no \
526 && test $gcc_cv_header_valgrind_memcheck_h = no); then
527 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
529 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
530 valgrind_command="$valgrind_path -q"
531 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
532 [Define if you want to run subprograms and generated programs
533 through valgrind (a memory checker). This is extremely expensive.])
534 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
535 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
536 [Define if valgrind's valgrind/memcheck.h header is installed.])
538 if test $gcc_cv_header_memcheck_h = yes; then
539 AC_DEFINE(HAVE_MEMCHECK_H, 1,
540 [Define if valgrind's memcheck.h header is installed.])
543 AC_SUBST(valgrind_path_defines)
544 AC_SUBST(valgrind_command)
546 # Enable code coverage collection
547 AC_ARG_ENABLE(coverage,
548 [ --enable-coverage[=LEVEL]
549 enable compiler's code coverage collection.
550 Use to measure compiler performance and locate
551 unused parts of the compiler. With LEVEL, specify
552 optimization. Values are opt, noopt,
554 [case "${enableval}" in
556 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
559 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
562 # a.k.a. --disable-coverage
566 AC_MSG_ERROR(unknown coverage setting $enableval)
570 AC_SUBST(coverage_flags)
572 AC_ARG_ENABLE(gather-detailed-mem-stats,
573 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
574 [enable_gather_detailed_mem_stats=no])
575 if test x$enable_gather_detailed_mem_stats = xyes ; then
576 AC_DEFINE(GATHER_STATISTICS, 1,
577 [Define to enable detailed memory allocation stats gathering.])
580 # -------------------------------
581 # Miscenalleous configure options
582 # -------------------------------
584 # See if we are building gcc with C++.
585 AC_ARG_ENABLE(build-with-cxx,
586 [ --enable-build-with-cxx build with C++ compiler instead of C compiler],
587 ENABLE_BUILD_WITH_CXX=$enableval,
588 ENABLE_BUILD_WITH_CXX=no)
589 AC_SUBST(ENABLE_BUILD_WITH_CXX)
593 [ --with-stabs arrange to use stabs instead of host debug format],
597 # Determine whether or not multilibs are enabled.
598 AC_ARG_ENABLE(multilib,
599 [ --enable-multilib enable library support for multiple ABIs],
600 [], [enable_multilib=yes])
601 AC_SUBST(enable_multilib)
603 # Enable __cxa_atexit for C++.
604 AC_ARG_ENABLE(__cxa_atexit,
605 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
608 # Enable C extension for decimal float if target supports it.
609 AC_ARG_ENABLE(decimal-float,
610 [ --enable-decimal-float={no,yes,bid,dpd}
611 enable decimal float extension to C. Selecting 'bid'
612 or 'dpd' choses which decimal floating point format
615 case $enable_decimal_float in
616 yes | no | bid | dpd) ;;
617 *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
618 Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
623 powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
624 enable_decimal_float=yes
627 AC_MSG_WARN(decimal float is not supported for this target, ignored)
628 enable_decimal_float=no
633 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
634 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
635 [Define to 1 to enable decimal float extension to C.])
637 # x86's use BID format instead of DPD
638 case x$enable_decimal_float in
641 i?86*-*-linux* | x86_64*-*-linux*)
642 enable_decimal_float=bid
645 enable_decimal_float=dpd
650 # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
651 # dependency on libdecnumber.
652 enable_decimal_float=dpd
655 AC_SUBST(enable_decimal_float)
657 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
658 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
659 [Define to 1 to specify that we are using the BID decimal floating
660 point format instead of DPD])
662 # Enable C extension for fixed-point arithmetic.
663 AC_ARG_ENABLE(fixed-point,
664 [ --enable-fixed-point enable fixed-point arithmetic extension to C],
672 AC_MSG_WARN(fixed-point is not supported on IRIX, ignored)
673 enable_fixed_point=no
676 enable_fixed_point=yes
681 AC_MSG_WARN(fixed-point is not supported for this target, ignored)
682 enable_fixed_point=no
686 AC_SUBST(enable_fixed_point)
688 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
689 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
690 [Define to 1 to enable fixed-point arithmetic extension to C.])
693 # Pass with no value to take the default
694 # Pass with a value to specify a thread package
695 AC_ARG_ENABLE(threads,
696 [ --enable-threads enable thread usage for target GCC
697 --enable-threads=LIB use LIB thread package for target GCC],,
701 [ --enable-tls enable or disable generation of tls code
702 overriding the assembler check for tls support],
706 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
707 Valid choices are 'yes' and 'no'.]) ;;
711 AC_ARG_ENABLE(objc-gc,
712 [ --enable-objc-gc enable the use of Boehm's garbage collector with
713 the GNU Objective-C runtime],
714 if test x$enable_objc_gc = xno; then
722 [ --with-dwarf2 force the default debug format to be DWARF 2],
723 dwarf2="$with_dwarf2",
726 AC_ARG_ENABLE(shared,
727 [ --disable-shared don't provide a shared libgcc],
729 case $enable_shared in
733 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
734 for pkg in $enableval; do
735 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
742 ], [enable_shared=yes])
743 AC_SUBST(enable_shared)
745 AC_ARG_WITH(build-sysroot,
746 [ --with-build-sysroot=sysroot
747 use sysroot as the system root during the build])
750 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
752 case ${with_sysroot} in
753 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
754 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
757 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
758 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
760 if test "x$prefix" = xNONE; then
761 test_prefix=/usr/local
765 if test "x$exec_prefix" = xNONE; then
766 test_exec_prefix=$test_prefix
768 test_exec_prefix=$exec_prefix
770 case ${TARGET_SYSTEM_ROOT} in
771 "${test_prefix}"|"${test_prefix}/"*|\
772 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
773 '${prefix}'|'${prefix}/'*|\
774 '${exec_prefix}'|'${exec_prefix}/'*)
775 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
776 TARGET_SYSTEM_ROOT_DEFINE="$t"
781 TARGET_SYSTEM_ROOT_DEFINE=
782 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
784 AC_SUBST(TARGET_SYSTEM_ROOT)
785 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
786 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
789 [AS_HELP_STRING([--with-specs=SPECS],
790 [add SPECS to driver command-line processing])],
791 [CONFIGURE_SPECS=$withval],
794 AC_SUBST(CONFIGURE_SPECS)
796 # Build with intermodule optimisations
797 AC_ARG_ENABLE(intermodule,
798 [ --enable-intermodule build the compiler in one step],
799 [case ${enable_intermodule} in
800 yes) onestep="-onestep";;
806 ACX_PKGVERSION([GCC])
807 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
809 # Sanity check enable_languages in case someone does not run the toplevel
810 # configure # script.
811 AC_ARG_ENABLE(languages,
812 [ --enable-languages=LIST specify which front-ends to build],
813 [case ,${enable_languages}, in
815 # go safe -- we cannot be much sure without the toplevel
817 # analysis of which target libs are present and usable
821 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
826 enable_languages=c,${enable_languages}
829 [enable_languages=c])
831 AC_ARG_WITH(multilib-list,
832 [ --with-multilib-list Select multilibs (SH only)],
834 with_multilib_list=default)
836 # -------------------------
837 # Checks for other programs
838 # -------------------------
842 # Find some useful tools
844 # We need awk to create options.c and options.h.
845 # Bail out if it's missing.
847 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
855 # By default, the Darwin ranlib will not treat common symbols as
856 # definitions when building the archive table of contents. Other
857 # ranlibs do that; pass an option to the Darwin ranlib that makes
858 # it behave similarly.
864 AC_SUBST(ranlib_flags)
868 # See if cmp has --ignore-initial.
869 gcc_AC_PROG_CMP_IGNORE_INITIAL
871 # See if we have the mktemp command.
872 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
874 # See if makeinfo has been installed and is modern enough
875 # that we can use it.
876 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
877 [GNU texinfo.* \([0-9][0-9.]*\)],
878 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
879 if test $gcc_cv_prog_makeinfo_modern = no; then
881 *** Makeinfo is missing or too old.
882 *** Info documentation will not be built.])
889 # Is pod2man recent enough to regenerate manpages?
890 AC_MSG_CHECKING([for recent Pod::Man])
891 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
893 GENERATED_MANPAGES=generated-manpages
898 AC_SUBST(GENERATED_MANPAGES)
900 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
903 dnl Don't use AC_PROG_LEX; we insist on flex.
904 dnl LEXLIB is not useful in gcc.
905 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
908 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
910 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
911 # check for build == host before using them.
914 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
915 && test -d ../binutils ; then
916 NM='$(objdir)/../binutils/nm-new'
918 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
922 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
923 && test -d ../binutils ; then
924 AR='$(objdir)/../binutils/ar'
926 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
930 # --------------------
931 # Checks for C headers
932 # --------------------
934 # Need to reject headers which give warnings, so that the -Werror bootstrap
935 # works later. *sigh* This needs to come before all header checks.
942 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
943 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
944 sys/resource.h sys/param.h sys/times.h sys/stat.h \
945 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
947 # Check for thread headers.
948 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
949 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
951 # These tests can't be done till we know if we have limits.h.
960 # These libraries may be used by collect2.
961 # We may need a special search path to get them linked.
962 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
964 for libs in '' -lld -lmld \
965 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
966 '-L/usr/lib/cmplrs/cc3.11 -lmld'
969 AC_TRY_LINK_FUNC(ldopen,
970 [gcc_cv_collect2_libs="$libs"; break])
973 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
974 case $gcc_cv_collect2_libs in
976 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
978 AC_SUBST(COLLECT2_LIBS)
980 # When building Ada code on Alpha, we need exc_resume which is usually in
981 # -lexc. So test for it.
984 AC_SEARCH_LIBS(exc_resume, exc)
987 AC_SUBST(GNAT_LIBEXC)
989 # Some systems put ldexp and frexp in libm instead of libc; assume
990 # they're both in the same place. jcf-dump needs them.
993 AC_SEARCH_LIBS(ldexp, m)
998 # Use <inttypes.h> only if it exists,
999 # doesn't clash with <sys/types.h>, and declares intmax_t.
1000 AC_MSG_CHECKING(for inttypes.h)
1001 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1002 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1003 [[#include <sys/types.h>
1004 #include <inttypes.h>]],
1005 [[intmax_t i = -1;]])],
1006 [gcc_cv_header_inttypes_h=yes],
1007 [gcc_cv_header_inttypes_h=no])])
1008 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1009 if test $gcc_cv_header_inttypes_h = yes; then
1010 AC_DEFINE(HAVE_INTTYPES_H, 1,
1011 [Define if you have a working <inttypes.h> header file.])
1014 dnl Disabled until we have a complete test for buggy enum bitfields.
1015 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1017 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1018 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1019 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1020 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1021 putchar_unlocked putc_unlocked)
1022 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1023 sysconf strsignal getrusage nl_langinfo \
1024 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1027 save_CPPFLAGS="$CPPFLAGS"
1029 LIBS="$LIBS $LIBELFLIBS"
1030 AC_CHECK_FUNCS(elf_getshdrstrndx,,
1031 [AC_CHECK_FUNCS(elf_getshstrndx,
1032 [AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1036 return elf_getshstrndx (NULL, 0) == 0;
1037 }]])], AC_DEFINE(HAVE_ELF_GETSHSTRNDX_GABI, 1,
1038 [Define if elf_getshstrndx has gABI conformant return values.]))])]
1041 CPPFLAGS="$save_CPPFLAGS"
1043 if test x$ac_cv_func_mbstowcs = xyes; then
1044 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1045 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1051 [gcc_cv_func_mbstowcs_works=yes],
1052 [gcc_cv_func_mbstowcs_works=no],
1053 [gcc_cv_func_mbstowcs_works=yes])])
1054 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1055 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1056 [Define this macro if mbstowcs does not crash when its
1057 first argument is NULL.])
1061 AC_CHECK_TYPE(ssize_t, int)
1062 AC_CHECK_TYPE(caddr_t, char *)
1064 gcc_AC_FUNC_MMAP_BLACKLIST
1068 # Under VMS, vfork works very differently than on Unix. The standard test
1069 # won't work, and it isn't easily adaptable. It makes more sense to
1071 ac_cv_func_vfork_works=yes
1077 # Until we have in-tree GNU iconv:
1079 AC_SUBST(LIBICONV_DEP)
1085 # We will need to find libiberty.h and ansidecl.h
1086 saved_CFLAGS="$CFLAGS"
1087 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1088 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1089 strsignal strstr strverscmp \
1090 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1091 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1092 #include "ansidecl.h"
1093 #include "system.h"])
1095 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1096 #include "ansidecl.h"
1098 #ifdef HAVE_SYS_RESOURCE_H
1099 #include <sys/resource.h>
1103 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1104 #include "ansidecl.h"
1106 #ifdef HAVE_SYS_RESOURCE_H
1107 #include <sys/resource.h>
1109 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1110 [Define to `long' if <sys/resource.h> doesn't define.])])
1112 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1113 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1114 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1115 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1116 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1117 #include "ansidecl.h"
1126 gcc_AC_CHECK_DECLS(times, , ,[
1127 #include "ansidecl.h"
1129 #ifdef HAVE_SYS_TIMES_H
1130 #include <sys/times.h>
1134 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1135 #include "ansidecl.h"
1140 # More time-related stuff.
1141 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1142 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1143 #include "ansidecl.h"
1145 #ifdef HAVE_SYS_TIMES_H
1146 #include <sys/times.h>
1148 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1149 if test $ac_cv_struct_tms = yes; then
1150 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1151 [Define if <sys/times.h> defines struct tms.])
1154 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1155 # revisit after autoconf 2.50.
1156 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1157 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1158 #include "ansidecl.h"
1160 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1161 if test $gcc_cv_type_clock_t = yes; then
1162 AC_DEFINE(HAVE_CLOCK_T, 1,
1163 [Define if <time.h> defines clock_t.])
1166 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1167 CFLAGS="$saved_CFLAGS"
1169 gcc_AC_INITFINI_ARRAY
1171 # mkdir takes a single argument on some systems.
1172 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1180 # With Setjmp/Longjmp based exception handling.
1181 AC_ARG_ENABLE(sjlj-exceptions,
1182 [ --enable-sjlj-exceptions
1183 arrange to use setjmp/longjmp exception handling],
1186 if test $enableval != yes; then
1187 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1192 force_sjlj_exceptions=yes],
1195 force_sjlj_exceptions=yes
1199 force_sjlj_exceptions=no
1202 if test $force_sjlj_exceptions = yes; then
1203 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1204 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1205 [Define 0/1 to force the choice for exception handling model.])
1208 # For platforms with the unwind ABI which includes an unwind library,
1209 # libunwind, we can choose to use the system libunwind.
1210 # config.gcc also contains tests of with_system_libunwind.
1211 GCC_CHECK_UNWIND_GETIPINFO
1213 # --------------------------------------------------------
1214 # Build, host, and target specific configuration fragments
1215 # --------------------------------------------------------
1217 # Collect build-machine-specific information.
1218 . ${srcdir}/config.build
1220 # Collect host-machine-specific information.
1221 . ${srcdir}/config.host
1225 # Collect target-machine-specific information.
1226 . ${srcdir}/config.gcc
1228 extra_objs="${host_extra_objs} ${extra_objs}"
1229 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1231 # Default the target-machine variables that were not explicitly set.
1232 if test x"$tm_file" = x
1233 then tm_file=$cpu_type/$cpu_type.h; fi
1235 if test x"$extra_headers" = x
1236 then extra_headers=; fi
1238 if test x$md_file = x
1239 then md_file=$cpu_type/$cpu_type.md; fi
1241 if test x$out_file = x
1242 then out_file=$cpu_type/$cpu_type.c; fi
1244 if test x"$tmake_file" = x
1245 then tmake_file=$cpu_type/t-$cpu_type
1248 if test x"$dwarf2" = xyes
1249 then tm_file="$tm_file tm-dwarf2.h"
1252 # Say what files are being used for the output code and MD file.
1253 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1254 echo "Using \`$srcdir/config/$md_file' as machine description file."
1256 # If any of the xm_file variables contain nonexistent files, warn
1257 # about them and drop them.
1260 for x in $build_xm_file; do
1261 if test -f $srcdir/config/$x
1263 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1269 for x in $host_xm_file; do
1270 if test -f $srcdir/config/$x
1272 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1278 for x in $xm_file; do
1279 if test -f $srcdir/config/$x
1281 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1287 for f in $tm_file; do
1290 if test $count = ax; then
1291 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1293 echo "Using the following target machine macro files:"
1294 for f in $tm_file; do
1295 echo " $srcdir/config/$f"
1299 if test x$need_64bit_hwint = xyes; then
1300 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1301 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1304 if test x$use_long_long_for_widest_fast_int = xyes; then
1305 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1306 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1307 efficiently supported by the host hardware.])
1311 for f in $host_xm_file; do
1314 if test $count = a; then
1316 elif test $count = ax; then
1317 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1319 echo "Using the following host machine macro files:"
1320 for f in $host_xm_file; do
1321 echo " $srcdir/config/$f"
1324 echo "Using ${out_host_hook_obj} for host machine hooks."
1326 if test "$host_xm_file" != "$build_xm_file"; then
1328 for f in $build_xm_file; do
1331 if test $count = a; then
1333 elif test $count = ax; then
1334 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1336 echo "Using the following build machine macro files:"
1337 for f in $build_xm_file; do
1338 echo " $srcdir/config/$f"
1345 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1346 gcc_cv_mcontext_underscores,
1348 #include <sys/cdefs.h>
1349 #include <sys/signal.h>
1350 #include <ucontext.h>
1351 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1353 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1354 if test $gcc_cv_mcontext_underscores = yes; then
1355 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1356 [mcontext_t fields start with __])
1365 # Check if a valid thread package
1366 case ${enable_threads} in
1369 target_thread_file='single'
1373 target_thread_file='single'
1375 aix | dce | gnat | irix | posix | posix95 | rtems | \
1376 single | solaris | vxworks | win32 | mipssde)
1377 target_thread_file=${enable_threads}
1380 echo "${enable_threads} is an unknown thread package" 1>&2
1385 if test x${thread_file} = x; then
1386 # No thread file set by target-specific clauses in config.gcc,
1387 # so use file chosen by default logic above
1388 thread_file=${target_thread_file}
1391 # Make gthr-default.h if we have a thread file.
1393 if test $thread_file != single; then
1394 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1395 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1396 rm -f gthr-default.h-t
1398 mv -f gthr-default.h-t gthr-default.h
1400 gthread_flags=-DHAVE_GTHR_DEFAULT
1402 AC_SUBST(gthread_flags)
1409 if test x$enable___cxa_atexit = xyes || \
1410 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1411 if test x$host = x$target; then
1413 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1414 # keyed to flag_use_cxa_atexit
1419 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1420 [echo "__cxa_atexit can't be enabled on this target"])
1424 # We can't check for __cxa_atexit when building a cross, so assume
1428 if test x$use_cxa_atexit = xyes; then
1429 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1430 [Define if you want to use __cxa_atexit, rather than atexit, to
1431 register C++ destructors for local statics and global objects.
1432 This is essential for fully standards-compliant handling of
1433 destructors, but requires __cxa_atexit in libc.])
1437 # Look for a file containing extra machine modes.
1438 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1439 extra_modes_file='$(srcdir)'/config/${extra_modes}
1440 AC_SUBST(extra_modes_file)
1441 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1442 [Define to the name of a file containing a list of extra machine modes
1443 for this architecture.])
1446 # Convert extra_options into a form suitable for Makefile use.
1448 for f in $extra_options; do
1449 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1451 AC_SUBST(extra_opt_files)
1453 # auto-host.h is the file containing items generated by autoconf and is
1454 # the first file included by config.h.
1455 # If host=build, it is correct to have bconfig include auto-host.h
1456 # as well. If host!=build, we are in error and need to do more
1457 # work to find out the build config parameters.
1458 if test x$host = x$build
1460 build_auto=auto-host.h
1462 # We create a subdir, then run autoconf in the subdir.
1463 # To prevent recursion we set host and build for the new
1464 # invocation of configure to the build for this invocation
1471 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1472 *) realsrcdir=../${srcdir};;
1474 saved_CFLAGS="${CFLAGS}"
1475 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1476 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1477 ${realsrcdir}/configure \
1478 --enable-languages=${enable_languages-all} \
1479 --target=$target_alias --host=$build_alias --build=$build_alias
1480 CFLAGS="${saved_CFLAGS}"
1482 # We just finished tests for the build machine, so rename
1483 # the file auto-build.h in the gcc directory.
1484 mv auto-host.h ../auto-build.h
1487 build_auto=auto-build.h
1489 AC_SUBST(build_subdir)
1491 tm_file="${tm_file} defaults.h"
1492 tm_p_file="${tm_p_file} tm-preds.h"
1493 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1494 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1495 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1496 # put this back in temporarily.
1497 xm_file="auto-host.h ansidecl.h ${xm_file}"
1504 # Compile in configure arguments.
1505 if test -f configargs.h ; then
1506 # Being re-configured.
1507 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1508 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1510 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1513 # Double all backslashes and backslash all quotes to turn
1514 # gcc_config_arguments into a C string.
1515 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1516 $gcc_config_arguments
1518 gcc_config_arguments_str=`cat conftest.out`
1521 cat > configargs.h <<EOF
1522 /* Generated automatically. */
1523 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1524 static const char thread_model[] = "$thread_file";
1526 static const struct {
1527 const char *name, *value;
1528 } configure_default_options[] = $configure_default_options;
1533 gcc_BASEVER=`cat $srcdir/BASE-VER`
1534 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1535 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1536 if test -f $srcdir/REVISION ; then
1537 gcc_REVISION=`cat $srcdir/REVISION`
1541 cat > plugin-version.h <<EOF
1542 #include "configargs.h"
1544 static char basever[] = "$gcc_BASEVER";
1545 static char datestamp[] = "$gcc_DATESTAMP";
1546 static char devphase[] = "$gcc_DEVPHASE";
1547 static char revision[] = "$gcc_REVISION";
1549 /* FIXME plugins: We should make the version information more precise.
1550 One way to do is to add a checksum. */
1552 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1554 configuration_arguments};
1558 # Internationalization
1559 ZW_GNU_GETTEXT_SISTER_DIR
1561 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1562 # -liconv on the link line twice.
1563 case "$LIBINTL" in *$LIBICONV*)
1567 AC_ARG_ENABLE(secureplt,
1568 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1571 AC_ARG_ENABLE(leading-mingw64-underscores,
1572 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1573 [Enable leading underscores on 64 bit mingw targets]),
1575 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1576 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1577 [Define if we should use leading underscore on 64 bit mingw targets])])
1580 [ --enable-cld enable -mcld by default for 32bit x86], [],
1583 # Windows32 Registry support for specifying GCC installation paths.
1584 AC_ARG_ENABLE(win32-registry,
1585 [ --disable-win32-registry
1586 disable lookup of installation paths in the
1587 Registry on Windows hosts
1588 --enable-win32-registry enable registry lookup (default)
1589 --enable-win32-registry=KEY
1590 use KEY instead of GCC version as the last portion
1591 of the registry key],,)
1594 win32 | pe | cygwin* | mingw32* | uwin*)
1595 if test "x$enable_win32_registry" != xno; then
1596 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1599 if test "x$enable_win32_registry" != xno; then
1600 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1601 [Define to 1 if installation paths should be looked up in the Windows
1602 Registry. Ignored on non-Windows hosts.])
1604 if test "x$enable_win32_registry" != xyes \
1605 && test "x$enable_win32_registry" != x; then
1606 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1607 [Define to be the last component of the Windows registry key under which
1608 to look for installation paths. The full key used will be
1609 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1610 The default is the GCC version number.])
1616 # Get an absolute path to the GCC top-level source directory
1617 holddir=`${PWDCMD-pwd}`
1619 topdir=`${PWDCMD-pwd}`
1622 # Conditionalize the makefile for this host machine.
1624 for f in ${host_xmake_file}
1626 if test -f ${srcdir}/config/$f
1628 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1632 # Conditionalize the makefile for this target machine.
1634 for f in ${tmake_file}
1636 if test -f ${srcdir}/config/$f
1638 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1641 tmake_file="${tmake_file_}"
1643 out_object_file=`basename $out_file .c`.o
1645 tm_file_list="options.h"
1646 tm_include_list="options.h"
1647 for f in $tm_file; do
1650 f=`echo $f | sed 's/^..//'`
1651 tm_file_list="${tm_file_list} $f"
1652 tm_include_list="${tm_include_list} $f"
1655 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1656 tm_include_list="${tm_include_list} $f"
1659 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1660 tm_include_list="${tm_include_list} config/$f"
1667 for f in $tm_p_file; do
1670 tm_p_file_list="${tm_p_file_list} $f"
1671 tm_p_include_list="${tm_p_include_list} $f"
1674 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1675 tm_p_include_list="${tm_p_include_list} config/$f"
1681 for f in $xm_file; do
1684 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1685 xm_include_list="${xm_include_list} $f"
1688 xm_file_list="${xm_file_list} $f"
1689 xm_include_list="${xm_include_list} $f"
1692 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1693 xm_include_list="${xm_include_list} config/$f"
1699 host_xm_include_list=
1700 for f in $host_xm_file; do
1703 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1704 host_xm_include_list="${host_xm_include_list} $f"
1707 host_xm_file_list="${host_xm_file_list} $f"
1708 host_xm_include_list="${host_xm_include_list} $f"
1711 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1712 host_xm_include_list="${host_xm_include_list} config/$f"
1718 for f in $build_xm_file; do
1721 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1722 build_xm_include_list="${build_xm_include_list} $f"
1724 auto-build.h | auto-host.h )
1725 build_xm_file_list="${build_xm_file_list} $f"
1726 build_xm_include_list="${build_xm_include_list} $f"
1729 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1730 build_xm_include_list="${build_xm_include_list} config/$f"
1735 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1736 # cross-compiler which does not use the native headers and libraries.
1737 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1738 CROSS= AC_SUBST(CROSS)
1739 ALL=all.internal AC_SUBST(ALL)
1740 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1742 if test "x$with_build_sysroot" != x; then
1743 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1745 # This value is used, even on a native system, because
1746 # CROSS_SYSTEM_HEADER_DIR is just
1747 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1748 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1751 if test x$host != x$target
1753 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1755 SYSTEM_HEADER_DIR=$build_system_header_dir
1756 case "$host","$target" in
1757 # Darwin crosses can use the host system's libraries and headers,
1758 # because of the fat library support. Of course, it must be the
1759 # same version of Darwin on both sides. Allow the user to
1760 # just say --target=foo-darwin without a version number to mean
1761 # "the version on this system".
1762 *-*-darwin*,*-*-darwin*)
1763 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1764 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1765 if test $hostos = $targetos -o $targetos = darwin ; then
1767 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1772 i?86-*-*,x86_64-*-* \
1773 | powerpc*-*-*,powerpc64*-*-*)
1774 CROSS="$CROSS -DNATIVE_CROSS" ;;
1776 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1777 SYSTEM_HEADER_DIR=$build_system_header_dir
1780 # If this is a cross-compiler that does not
1781 # have its own set of headers then define
1784 # If this is using newlib, without having the headers available now,
1785 # then define inhibit_libc in LIBGCC2_CFLAGS.
1786 # This prevents libgcc2 from containing any code which requires libc
1788 : ${inhibit_libc=false}
1789 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1790 test x$with_newlib = xyes ; } &&
1791 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1794 AC_SUBST(inhibit_libc)
1796 # When building gcc with a cross-compiler, we need to adjust things so
1797 # that the generator programs are still built with the native compiler.
1798 # Also, we cannot run fixincludes.
1800 # These are the normal (build=host) settings:
1801 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1802 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1803 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1804 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1806 # And these apply if build != host, or we are generating coverage data
1807 if test x$build != x$host || test "x$coverage_flags" != x
1809 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1810 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1813 # Expand extra_headers to include complete path.
1814 # This substitutes for lots of t-* files.
1816 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1817 for file in ${extra_headers} ; do
1818 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1821 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1822 if test x"$use_gcc_tgmath" = xyes
1823 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1826 # Define collect2 in Makefile.
1827 case $host_can_use_collect2 in
1829 *) collect2='collect2$(exeext)' ;;
1831 AC_SUBST([collect2])
1833 # Add a definition of USE_COLLECT2 if system wants one.
1834 case $use_collect2 in
1835 no) use_collect2= ;;
1838 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1839 xm_defines="${xm_defines} USE_COLLECT2"
1840 case $host_can_use_collect2 in
1842 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1848 # ---------------------------
1849 # Assembler & linker features
1850 # ---------------------------
1852 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1853 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1854 # However when ld-new is first executed from the build tree, libtool will
1855 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1856 # to the build tree. While doing this we need to use the previous-stage
1857 # linker, or we have an infinite loop. The presence of a shell script as
1858 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1859 # the gcc/collect-ld script. So we need to know how libtool works, or
1860 # exec-tool will fail.
1862 m4_defun([_LT_CONFIG_COMMANDS], [])
1865 AC_SUBST(enable_fast_install)
1867 # Identify the assembler which will work hand-in-glove with the newly
1868 # built GCC, so that we can examine its features. This is the assembler
1869 # which will be driven by the driver program.
1871 # If build != host, and we aren't building gas in-tree, we identify a
1872 # build->target assembler and hope that it will have the same features
1873 # as the host->target assembler we'll be using.
1874 gcc_cv_gas_major_version=
1875 gcc_cv_gas_minor_version=
1876 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1878 m4_pattern_allow([AS_FOR_TARGET])dnl
1879 AS_VAR_SET_IF(gcc_cv_as,, [
1880 if test -x "$DEFAULT_ASSEMBLER"; then
1881 gcc_cv_as="$DEFAULT_ASSEMBLER"
1882 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1883 && test -f ../gas/Makefile \
1884 && test x$build = x$host; then
1885 gcc_cv_as=../gas/as-new$build_exeext
1886 elif test -x as$build_exeext; then
1887 # Build using assembler in the current directory.
1888 gcc_cv_as=./as$build_exeext
1889 elif test -x $AS_FOR_TARGET; then
1890 gcc_cv_as="$AS_FOR_TARGET"
1892 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1895 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1896 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1897 case "$ORIGINAL_AS_FOR_TARGET" in
1898 ./as | ./as$build_exeext) ;;
1899 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1902 AC_MSG_CHECKING(what assembler to use)
1903 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1904 # Single tree build which includes gas. We want to prefer it
1905 # over whatever linker top-level may have detected, since
1906 # we'll use what we're building after installation anyway.
1907 AC_MSG_RESULT(newly built gas)
1909 _gcc_COMPUTE_GAS_VERSION
1910 in_tree_gas_is_elf=no
1911 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1912 || (grep 'obj_format = multi' ../gas/Makefile \
1913 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1915 in_tree_gas_is_elf=yes
1918 AC_MSG_RESULT($gcc_cv_as)
1922 # Identify the linker which will work hand-in-glove with the newly
1923 # built GCC, so that we can examine its features. This is the linker
1924 # which will be driven by the driver program.
1926 # If build != host, and we aren't building gas in-tree, we identify a
1927 # build->target linker and hope that it will have the same features
1928 # as the host->target linker we'll be using.
1929 gcc_cv_gld_major_version=
1930 gcc_cv_gld_minor_version=
1931 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1932 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1934 AS_VAR_SET_IF(gcc_cv_ld,, [
1935 if test -x "$DEFAULT_LINKER"; then
1936 gcc_cv_ld="$DEFAULT_LINKER"
1937 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1938 && test -f ../ld/Makefile \
1939 && test x$build = x$host; then
1940 gcc_cv_ld=../ld/ld-new$build_exeext
1941 elif test -x collect-ld$build_exeext; then
1942 # Build using linker in the current directory.
1943 gcc_cv_ld=./collect-ld$build_exeext
1944 elif test -x $LD_FOR_TARGET; then
1945 gcc_cv_ld="$LD_FOR_TARGET"
1947 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1950 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1951 PLUGIN_LD=`basename $gcc_cv_ld`
1952 AC_ARG_WITH(plugin-ld,
1953 [ --with-plugin-ld=[[ARG]] specify the plugin linker],
1954 [if test x"$withval" != x; then
1955 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1956 PLUGIN_LD="$withval"
1958 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1959 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1961 # Check to see if we are using gold instead of ld
1962 AC_MSG_CHECKING(whether we are using gold)
1964 if test x$gcc_cv_ld != x; then
1965 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
1966 | grep "GNU gold" > /dev/null; then
1970 AC_MSG_RESULT($ld_is_gold)
1972 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1973 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1974 case "$ORIGINAL_LD_FOR_TARGET" in
1975 ./collect-ld | ./collect-ld$build_exeext) ;;
1976 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1979 AC_MSG_CHECKING(what linker to use)
1980 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1981 # Single tree build which includes ld. We want to prefer it
1982 # over whatever linker top-level may have detected, since
1983 # we'll use what we're building after installation anyway.
1984 AC_MSG_RESULT(newly built ld)
1986 in_tree_ld_is_elf=no
1987 if (grep 'EMUL = .*elf' ../ld/Makefile \
1988 || grep 'EMUL = .*linux' ../ld/Makefile \
1989 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1990 in_tree_ld_is_elf=yes
1992 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
1995 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1996 if test x$gcc_cv_gld_version != x; then
2000 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2001 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2004 AC_MSG_RESULT($gcc_cv_ld)
2008 # Figure out what nm we will be using.
2009 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2010 AS_VAR_SET_IF(gcc_cv_nm,, [
2011 if test -f $gcc_cv_binutils_srcdir/configure.in \
2012 && test -f ../binutils/Makefile \
2013 && test x$build = x$host; then
2014 gcc_cv_nm=../binutils/nm-new$build_exeext
2015 elif test -x nm$build_exeext; then
2016 gcc_cv_nm=./nm$build_exeext
2017 elif test -x $NM_FOR_TARGET; then
2018 gcc_cv_nm="$NM_FOR_TARGET"
2020 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2023 AC_MSG_CHECKING(what nm to use)
2024 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2025 # Single tree build which includes binutils.
2026 AC_MSG_RESULT(newly built nm)
2029 AC_MSG_RESULT($gcc_cv_nm)
2033 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2034 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2035 case "$ORIGINAL_NM_FOR_TARGET" in
2036 ./nm | ./nm$build_exeext) ;;
2037 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2041 # Figure out what objdump we will be using.
2042 AS_VAR_SET_IF(gcc_cv_objdump,, [
2043 if test -f $gcc_cv_binutils_srcdir/configure.in \
2044 && test -f ../binutils/Makefile \
2045 && test x$build = x$host; then
2046 # Single tree build which includes binutils.
2047 gcc_cv_objdump=../binutils/objdump$build_exeext
2048 elif test -x objdump$build_exeext; then
2049 gcc_cv_objdump=./objdump$build_exeext
2050 elif test -x $OBJDUMP_FOR_TARGET; then
2051 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2053 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2056 AC_MSG_CHECKING(what objdump to use)
2057 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2058 # Single tree build which includes binutils.
2059 AC_MSG_RESULT(newly built objdump)
2060 elif test x$gcc_cv_objdump = x; then
2061 AC_MSG_RESULT(not found)
2063 AC_MSG_RESULT($gcc_cv_objdump)
2066 # Figure out what readelf we will be using.
2067 AS_VAR_SET_IF(gcc_cv_readelf,, [
2068 if test -f $gcc_cv_binutils_srcdir/configure.in \
2069 && test -f ../binutils/Makefile \
2070 && test x$build = x$host; then
2071 # Single tree build which includes binutils.
2072 gcc_cv_readelf=../binutils/readelf$build_exeext
2073 elif test -x readelf$build_exeext; then
2074 gcc_cv_readelf=./readelf$build_exeext
2076 AC_PATH_PROG(gcc_cv_readelf, readelf)
2079 AC_MSG_CHECKING(what readelf to use)
2080 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2081 # Single tree build which includes binutils.
2082 AC_MSG_RESULT(newly built readelf)
2083 elif test x$gcc_cv_readelf = x; then
2084 AC_MSG_RESULT(not found)
2086 AC_MSG_RESULT($gcc_cv_readelf)
2089 # Figure out what assembler alignment features are present.
2090 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2094 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2095 [Define if your assembler supports .balign and .p2align.])])
2097 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2100 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2101 [Define if your assembler supports specifying the maximum number
2102 of bytes to skip when using the GAS .p2align command.])])
2104 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2107 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2108 [Define if your assembler supports .literal16.])])
2110 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2112 [conftest_label1: .word 0
2114 conftest_label2: .word 0
2116 [if test x$gcc_cv_nm != x; then
2117 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2118 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2119 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2121 else gcc_cv_as_subsection_m1=yes
2123 rm -f conftest.nm1 conftest.nm2
2125 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2126 [Define if your assembler supports .subsection and .subsection -1 starts
2127 emitting at the beginning of your section.])])
2129 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2132 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2134 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2136 [ .weakref foobar, barfnot],,
2137 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2139 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2142 .NSUBSPA $CODE$,COMDAT],,
2143 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2145 # .hidden needs to be supported in both the assembler and the linker,
2146 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2147 # This is irritatingly difficult to feature test for; we have to check the
2148 # date string after the version number. If we've got an in-tree
2149 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2151 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2152 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2156 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2157 # STV_HIDDEN, so disable .hidden support if so.
2160 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2161 cat > conftest.s <<EOF
2168 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2169 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2170 grep '\.hidden default' > /dev/null; then
2173 gcc_cv_as_hidden=yes
2176 # Assume bug is present if objdump is missing.
2181 gcc_cv_as_hidden=yes
2186 if test $in_tree_ld != yes ; then
2187 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2188 if test x"$ld_is_gold" = xyes; then
2189 gcc_cv_ld_hidden=yes
2190 elif echo "$ld_ver" | grep GNU > /dev/null; then
2191 ld_vers=`echo $ld_ver | sed -n \
2192 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2193 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2194 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2195 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2196 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2201 # Solaris 2 ld -V output looks like this for a regular version:
2203 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2205 # but test versions add stuff at the end:
2207 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2209 ld_ver=`$gcc_cv_ld -V 2>&1`
2210 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2211 ld_vers=`echo $ld_ver | sed -n \
2212 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2213 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2214 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2222 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2223 [[if test $in_tree_ld = yes ; then
2225 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2226 && test $in_tree_ld_is_elf = yes; then
2227 gcc_cv_ld_hidden=yes
2230 gcc_cv_ld_hidden=yes
2231 if echo "$ld_ver" | grep GNU > /dev/null; then
2232 if test 0"$ld_date" -lt 20020404; then
2233 if test -n "$ld_date"; then
2234 # If there was date string, but was earlier than 2002-04-04, fail
2236 elif test -z "$ld_vers"; then
2237 # If there was no date string nor ld version number, something is wrong
2240 test -z "$ld_vers_patch" && ld_vers_patch=0
2241 if test "$ld_vers_major" -lt 2; then
2243 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2244 gcc_cv_ld_hidden="no"
2245 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2252 hppa64*-*-hpux* | ia64*-*-hpux*)
2253 gcc_cv_ld_hidden=yes
2255 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2256 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2257 # .symbolic was only added in Solaris 9 12/02.
2258 gcc_cv_ld_hidden=yes
2266 libgcc_visibility=no
2267 AC_SUBST(libgcc_visibility)
2268 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2269 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2270 libgcc_visibility=yes
2271 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2272 [Define if your assembler and linker support .hidden.])
2275 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2276 gcc_cv_ld_ro_rw_mix=unknown
2277 if test $in_tree_ld = yes ; then
2278 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2279 && test $in_tree_ld_is_elf = yes; then
2280 gcc_cv_ld_ro_rw_mix=read-write
2282 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2283 echo '.section myfoosect, "a"' > conftest1.s
2284 echo '.section myfoosect, "aw"' > conftest2.s
2285 echo '.byte 1' >> conftest2.s
2286 echo '.section myfoosect, "a"' > conftest3.s
2287 echo '.byte 0' >> conftest3.s
2288 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2289 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2290 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2291 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2292 conftest2.o conftest3.o > /dev/null 2>&1; then
2293 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2294 | sed -e '/myfoosect/!d' -e N`
2295 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2296 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2297 gcc_cv_ld_ro_rw_mix=read-only
2299 gcc_cv_ld_ro_rw_mix=read-write
2304 rm -f conftest.* conftest[123].*
2307 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2308 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2309 [Define if your linker links a mix of read-only
2310 and read-write sections into a read-write section.])
2312 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2314 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2315 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2323 [[# GAS versions before 2.11 do not support uleb128,
2324 # despite appearing to.
2325 # ??? There exists an elf-specific test that will crash
2326 # the assembler. Perhaps it's better to figure out whether
2327 # arbitrary sections are supported and try the test.
2328 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2329 if echo "$as_ver" | grep GNU > /dev/null; then
2330 as_vers=`echo $as_ver | sed -n \
2331 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2332 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2333 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2334 if test $as_major -eq 2 && test $as_minor -lt 11
2336 else gcc_cv_as_leb128=yes
2339 [AC_DEFINE(HAVE_AS_LEB128, 1,
2340 [Define if your assembler supports .sleb128 and .uleb128.])])
2342 # Check if we have assembler support for unwind directives.
2343 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2350 .cfi_escape 1, 2, 3, 4, 5
2354 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2355 # read-only and read-write sections, we need to make sure that the
2356 # assembler used emits read-write .eh_frame sections.
2357 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2358 if test "x$gcc_cv_objdump" != x; then
2359 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2360 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2361 gcc_cv_as_cfi_directive=no
2364 i?86-*-solaris2.1[[0-9]]*)
2365 # On Solaris/x86, make sure that GCC and gas agree on using
2366 # read-only .eh_frame sections for 64-bit.
2367 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2368 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2369 sed -e /.eh_frame/!d -e N | \
2370 grep READONLY > /dev/null; then
2371 gcc_cv_as_cfi_directive=yes
2373 gcc_cv_as_cfi_directive=no
2377 gcc_cv_as_cfi_directive=yes
2382 # no objdump, err on the side of caution
2383 gcc_cv_as_cfi_directive=no
2386 gcc_cv_as_cfi_directive=yes
2390 gcc_cv_as_cfi_directive=yes
2393 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_readelf != x; then
2394 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2398 .cfi_adjust_cfa_offset 64
2400 .cfi_adjust_cfa_offset 128
2403 if $gcc_cv_readelf -wf conftest.o 2>/dev/null \
2404 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2405 gcc_cv_as_cfi_advance_working=yes
2409 # no readelf, err on the side of caution
2410 gcc_cv_as_cfi_advance_working=no
2412 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2413 [`if test $gcc_cv_as_cfi_directive = yes \
2414 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2415 [Define 0/1 if your assembler supports CFI directives.])
2417 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2418 gcc_cv_as_cfi_personality_directive, ,,
2421 .cfi_personality 0, symbol
2423 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2424 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2425 then echo 1; else echo 0; fi`],
2426 [Define 0/1 if your assembler supports .cfi_personality.])
2428 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2429 gcc_cv_as_cfi_sections_directive, ,,
2431 .cfi_sections .debug_frame, .eh_frame
2434 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2435 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2436 then echo 1; else echo 0; fi`],
2437 [Define 0/1 if your assembler supports .cfi_sections.])
2439 # GAS versions up to and including 2.11.0 may mis-optimize
2441 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2449 .section .eh_frame,"aw",@progbits
2451 .4byte .LECIE1-.LSCIE1
2465 .4byte .LEFDE1-.LASFDE1
2467 .4byte .LASFDE1-__FRAME_BEGIN__
2475 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2476 cat > conftest.lit <<EOF
2477 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2478 0010 01000000 12000000 18000000 00000000 ................
2479 0020 08000000 04080000 0044 .........D @&t@
2481 cat > conftest.big <<EOF
2482 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2483 0010 00000001 00000012 00000018 00000000 ................
2484 0020 00000008 04000000 0844 .........D @&t@
2486 # If the assembler didn't choke, and we can objdump,
2487 # and we got the correct data, then succeed.
2488 # The text in the here-document typically retains its unix-style line
2489 # endings, while the output of objdump will use host line endings.
2490 # Therefore, use diff -b for the comparisons.
2491 if test x$gcc_cv_objdump != x \
2492 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2493 | tail -3 > conftest.got \
2494 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2495 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2497 gcc_cv_as_eh_frame=yes
2498 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2499 gcc_cv_as_eh_frame=buggy
2501 # Uh oh, what do we do now?
2502 gcc_cv_as_eh_frame=no
2505 if test $gcc_cv_as_eh_frame = buggy; then
2506 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2507 [Define if your assembler mis-optimizes .eh_frame data.])
2510 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2511 [elf,2,12,0], [--fatal-warnings],
2512 [.section .rodata.str, "aMS", @progbits, 1])
2513 if test $gcc_cv_as_shf_merge = no; then
2514 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2515 [elf,2,12,0], [--fatal-warnings],
2516 [.section .rodata.str, "aMS", %progbits, 1])
2518 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2519 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2520 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2522 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2523 [elf,2,16,0], [--fatal-warnings],
2524 [.section .text,"axG",@progbits,.foo,comdat])
2525 if test $gcc_cv_as_comdat_group = yes; then
2526 gcc_cv_as_comdat_group_percent=no
2528 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2529 [elf,2,16,0], [--fatal-warnings],
2530 [.section .text,"axG",%progbits,.foo,comdat])
2532 if test x"$ld_is_gold" = xyes; then
2534 elif test $in_tree_ld = yes ; then
2536 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2537 && test $in_tree_ld_is_elf = yes; then
2540 elif echo "$ld_ver" | grep GNU > /dev/null; then
2542 if test 0"$ld_date" -lt 20050308; then
2543 if test -n "$ld_date"; then
2544 # If there was date string, but was earlier than 2005-03-08, fail
2546 elif test "$ld_vers_major" -lt 2; then
2548 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2555 *-*-solaris2.1[1-9]*)
2556 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2557 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2560 # FIXME: Maybe need to refine later when COMDAT group support with
2561 # Sun as is implemented.
2562 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 1688; then
2569 # Assume linkers other than GNU ld don't support COMDAT group.
2575 # Allow overriding the automatic COMDAT group tests above.
2576 AC_ARG_ENABLE(comdat,
2577 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2578 [comdat_group="$enable_comdat"])
2579 if test $comdat_group = no; then
2580 gcc_cv_as_comdat_group=no
2581 gcc_cv_as_comdat_group_percent=no
2583 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2584 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2585 [Define 0/1 if your assembler and linker support COMDAT groups.])
2587 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2588 gcc_cv_as_discriminator,
2592 .loc 1 1 0 discriminator 1],,
2593 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2594 [Define if your assembler supports the .loc discriminator sub-directive.])])
2596 # Thread-local storage - the check is heavily parameterized.
2605 .section ".tdata","awT",@progbits
2608 ldq $27,__tls_get_addr($29) !literal!1
2609 lda $16,foo($29) !tlsgd!1
2610 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2611 ldq $27,__tls_get_addr($29) !literal!2
2612 lda $16,foo($29) !tlsldm!2
2613 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2614 ldq $1,foo($29) !gotdtprel
2615 ldah $2,foo($29) !dtprelhi
2616 lda $3,foo($2) !dtprello
2617 lda $4,foo($29) !dtprel
2618 ldq $1,foo($29) !gottprel
2619 ldah $2,foo($29) !tprelhi
2620 lda $3,foo($2) !tprello
2621 lda $4,foo($29) !tprel'
2624 tls_as_opt=--fatal-warnings
2626 cris-*-*|crisv32-*-*)
2628 .section ".tdata","awT",@progbits
2635 tls_as_opt=--fatal-warnings
2639 .section ".tdata","awT",@progbits
2651 .section ".tdata","awT",@progbits
2655 addil LT%foo-$tls_gdidx$,gp
2656 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2659 addil LT%foo-$tls_ldidx$,gp
2661 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2662 addil LR%foo-$tls_dtpoff$,%ret0
2663 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2665 addil LT%foo-$tls_ieoff$,gp
2666 ldw RT%foo-$tls_ieoff$(%r1),%t2
2669 addil LR%foo-$tls_leoff$,%t1
2670 ldo RR%foo-$tls_leoff$(%r1),%t2'
2673 tls_as_opt=--fatal-warnings
2677 .section ".tdata","awT",%progbits
2690 i[34567]86-*-solaris2.[89]*)
2691 # TLS was introduced in the Solaris 9 4/04 release but
2692 # we do not enable it by default on Solaris 9 either.
2693 if test "x$enable_tls" = xyes ; then
2699 i[34567]86-*-solaris2.*)
2706 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2708 .section .tdata,"awt",@progbits'
2712 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2713 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2717 .section ".tdata","awT",@progbits'
2720 tls_as_opt="--fatal-warnings"
2722 conftest_s="$conftest_s
2726 leal foo@tlsgd(,%ebx,1), %eax
2727 leal foo@tlsldm(%ebx), %eax
2728 leal foo@dtpoff(%eax), %edx
2729 movl foo@gottpoff(%ebx), %eax
2730 subl foo@gottpoff(%ebx), %eax
2731 addl foo@gotntpoff(%ebx), %eax
2732 movl foo@indntpoff, %eax
2733 movl \$foo@tpoff, %eax
2734 subl \$foo@tpoff, %eax
2735 leal foo@ntpoff(%ecx), %eax"
2739 .section ".tdata","awT",@progbits
2743 leaq foo@TLSGD(%rip), %rdi
2744 leaq foo@TLSLD(%rip), %rdi
2745 leaq foo@DTPOFF(%rax), %rdx
2746 movq foo@GOTTPOFF(%rip), %rax
2747 movq $foo@TPOFF, %rax'
2750 tls_as_opt=--fatal-warnings
2754 .section ".tdata","awT",@progbits
2757 addl r16 = @ltoff(@dtpmod(foo#)), gp
2758 addl r17 = @ltoff(@dtprel(foo#)), gp
2759 addl r18 = @ltoff(@tprel(foo#)), gp
2760 addl r19 = @dtprel(foo#), gp
2761 adds r21 = @dtprel(foo#), r13
2762 movl r23 = @dtprel(foo#)
2763 addl r20 = @tprel(foo#), gp
2764 adds r22 = @tprel(foo#), r13
2765 movl r24 = @tprel(foo#)'
2768 tls_as_opt=--fatal-warnings
2772 .section .tdata,"awT",@progbits
2776 addiu $4, $28, %tlsgd(x)
2777 addiu $4, $28, %tlsldm(x)
2778 lui $4, %dtprel_hi(x)
2779 addiu $4, $4, %dtprel_lo(x)
2780 lw $4, %gottprel(x)($28)
2781 lui $4, %tprel_hi(x)
2782 addiu $4, $4, %tprel_lo(x)'
2785 tls_as_opt='-32 --fatal-warnings'
2789 .section .tdata,"awT",@progbits
2794 move.l x@TLSGD(%a5),%a0
2795 move.l x@TLSLDM(%a5),%a0
2796 move.l x@TLSLDO(%a5),%a0
2797 move.l x@TLSIE(%a5),%a0
2798 move.l x@TLSLE(%a5),%a0'
2801 tls_as_opt='--fatal-warnings'
2805 .section ".tdata","awT",@progbits
2813 addi 3,31,ld0@got@tlsgd
2815 addi 3,31,x1@got@tlsld
2818 addis 9,3,x2@dtprel@ha
2819 addi 9,9,x2@dtprel@l
2820 lwz 9,x3@got@tprel(31)
2823 addis 9,2,x2@tprel@ha
2824 addi 9,9,x2@tprel@l'
2827 tls_as_opt="-a32 --fatal-warnings"
2831 .section ".tdata","awT",@progbits
2839 addi 3,2,ld0@got@tlsgd
2845 addi 3,2,x1@got@tlsld
2851 addis 9,3,x2@dtprel@ha
2852 addi 9,9,x2@dtprel@l
2855 ld 9,x3@got@dtprel(2)
2861 tls_as_opt="-a64 --fatal-warnings"
2865 .section ".tdata","awT",@progbits
2874 l %r1,foo@GOTNTPOFF(%r12)
2875 l %r1,0(%r1):tls_load:foo
2876 bas %r14,0(%r1,%r13):tls_gdcall:foo
2877 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2880 tls_as_opt="-m31 --fatal-warnings"
2884 .section ".tdata","awT",@progbits
2892 lg %r1,foo@GOTNTPOFF(%r12)
2893 larl %r1,foo@INDNTPOFF
2894 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2895 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2898 tls_as_opt="-m64 -Aesame --fatal-warnings"
2900 sh-*-* | sh[34]-*-*)
2902 .section ".tdata","awT",@progbits
2912 tls_as_opt=--fatal-warnings
2916 sparc*-sun-solaris2.[89]*)
2917 # TLS was introduced in the Solaris 9 4/04 release but
2918 # we do not enable it by default on Solaris 9 either.
2919 if test "x$enable_tls" = xyes ; then
2925 sparc*-sun-solaris2.*)
2932 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2934 .section ".tdata",#alloc,#write,#tls
2937 sethi %tgd_hi22(foo), %o0
2938 add %o0, %tgd_lo10(foo), %o1
2939 add %l7, %o1, %o0, %tgd_add(foo)
2940 call __tls_get_addr, %tgd_call(foo)
2941 sethi %tldm_hi22(foo), %l1
2942 add %l1, %tldm_lo10(foo), %l2
2943 add %l7, %l2, %o0, %tldm_add(foo)
2944 call __tls_get_addr, %tldm_call(foo)
2945 sethi %tldo_hix22(foo), %l3
2946 xor %l3, %tldo_lox10(foo), %l4
2947 add %o0, %l4, %l5, %tldo_add(foo)
2948 sethi %tie_hi22(foo), %o3
2949 add %o3, %tie_lo10(foo), %o3
2950 ld [%l7 + %o3], %o2, %tie_ld(foo)
2951 add %g7, %o2, %o4, %tie_add(foo)
2952 sethi %tle_hix22(foo), %l1
2953 xor %l1, %tle_lox10(foo), %o5
2954 ld [%g7 + %o5], %o1'
2959 .section ".tdata","awT",@progbits
2962 sethi %tgd_hi22(foo), %o0
2963 add %o0, %tgd_lo10(foo), %o1
2964 add %l7, %o1, %o0, %tgd_add(foo)
2965 call __tls_get_addr, %tgd_call(foo)
2966 sethi %tldm_hi22(foo), %l1
2967 add %l1, %tldm_lo10(foo), %l2
2968 add %l7, %l2, %o0, %tldm_add(foo)
2969 call __tls_get_addr, %tldm_call(foo)
2970 sethi %tldo_hix22(foo), %l3
2971 xor %l3, %tldo_lox10(foo), %l4
2972 add %o0, %l4, %l5, %tldo_add(foo)
2973 sethi %tie_hi22(foo), %o3
2974 add %o3, %tie_lo10(foo), %o3
2975 ld [%l7 + %o3], %o2, %tie_ld(foo)
2976 add %g7, %o2, %o4, %tie_add(foo)
2977 sethi %tle_hix22(foo), %l1
2978 xor %l1, %tle_lox10(foo), %o5
2979 ld [%g7 + %o5], %o1'
2982 tls_as_opt="-32 --fatal-warnings"
2987 .section ".tdata","awT",@progbits
2990 movi a8, foo@TLSFUNC
2991 movi a10, foo@TLSARG
2992 callx8.tls a8, foo@TLSCALL'
2999 if test "x$enable_tls" = xno ; then
3000 : # TLS explicitly disabled.
3001 elif test "x$enable_tls" = xyes ; then
3002 set_have_as_tls=yes # TLS explicitly enabled.
3003 elif test -z "$tls_first_major"; then
3004 : # If we don't have a check, assume no support.
3006 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3007 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3008 [set_have_as_tls=yes])
3010 if test $set_have_as_tls = yes ; then
3011 AC_DEFINE(HAVE_AS_TLS, 1,
3012 [Define if your assembler supports thread-local storage.])
3015 # Target-specific assembler checks.
3017 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3018 gcc_cv_ld_static_dynamic=no
3019 if test $in_tree_ld = yes ; then
3020 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3021 gcc_cv_ld_static_dynamic=yes
3023 elif test x$gcc_cv_ld != x; then
3024 # Check if linker supports -Bstatic/-Bdynamic option
3025 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3026 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3027 gcc_cv_ld_static_dynamic=yes
3030 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3031 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3032 [Define if your linker supports -Bstatic/-Bdynamic option.])
3034 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3036 if test x"$demangler_in_ld" = xyes; then
3037 AC_MSG_CHECKING(linker --demangle support)
3038 gcc_cv_ld_demangle=no
3039 if test $in_tree_ld = yes; then
3040 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3041 gcc_cv_ld_demangle=yes
3043 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3044 # Check if the GNU linker supports --demangle option
3045 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3046 gcc_cv_ld_demangle=yes
3049 if test x"$gcc_cv_ld_demangle" = xyes; then
3050 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3051 [Define if your linker supports --demangle option.])
3053 AC_MSG_RESULT($gcc_cv_ld_demangle)
3057 # All TARGET_ABI_OSF targets.
3058 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3059 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3060 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3063 extbl $3, $2, $3 !lituse_bytoff!1
3064 ldq $2, a($29) !literal!1
3065 ldq $4, b($29) !literal!2
3066 ldq_u $3, 0($2) !lituse_base!1
3067 ldq $27, f($29) !literal!5
3068 jsr $26, ($27), f !lituse_jsr!5
3069 ldah $29, 0($26) !gpdisp!3
3070 lda $0, c($29) !gprel
3071 ldah $1, d($29) !gprelhigh
3072 lda $1, d($1) !gprellow
3073 lda $29, 0($29) !gpdisp!3],,
3074 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3075 [Define if your assembler supports explicit relocations.])])
3076 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3077 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3080 ldq $27, a($29) !literal!1
3081 jsr $26, ($27), a !lituse_jsrdirect!1],,
3082 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3083 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3087 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3088 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3089 [-no-mul-bug-abort], [.text],,
3090 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3091 [Define if your assembler supports the -no-mul-bug-abort option.])])
3095 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3096 [.register %g2, #scratch],,
3097 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3098 [Define if your assembler supports .register.])])
3100 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3102 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3103 [Define if your assembler supports -relax option.])])
3105 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3106 gcc_cv_as_sparc_gotdata_op,,
3112 sethi %gdop_hix22(foo), %g1
3113 xor %g1, %gdop_lox10(foo), %g1
3114 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3115 [if test x$gcc_cv_ld != x \
3116 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3117 if $gcc_cv_ld -v | grep GNU >/dev/null 2>&1; then
3118 if test x$gcc_cv_objdump != x; then
3119 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3120 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3121 gcc_cv_as_sparc_gotdata_op=no
3123 gcc_cv_as_sparc_gotdata_op=yes
3127 gcc_cv_as_sparc_gotdata_op=yes
3131 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3132 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3134 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3135 gcc_cv_as_sparc_ua_pcrel,,
3143 .uaword %r_disp32(foo)],
3144 [if test x$gcc_cv_ld != x \
3145 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3146 gcc_cv_as_sparc_ua_pcrel=yes
3149 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3150 [Define if your assembler and linker support unaligned PC relative relocs.])
3152 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3153 gcc_cv_as_sparc_ua_pcrel_hidden,,
3158 .uaword %r_disp32(foo)
3159 .byte 0x32, 0x33, 0x34
3164 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3165 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3166 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3167 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3168 if $gcc_cv_objdump -R conftest 2> /dev/null \
3169 | grep 'DISP32' > /dev/null 2>&1; then
3172 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3176 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3177 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3178 ]) # unaligned pcrel relocs
3180 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3181 gcc_cv_as_sparc_offsetable_lo10,,
3184 or %g1, %lo(ab) + 12, %g1
3185 or %g1, %lo(ab + 12), %g1],
3186 [if test x$gcc_cv_objdump != x \
3187 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3188 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3189 gcc_cv_as_sparc_offsetable_lo10=yes
3191 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3192 [Define if your assembler supports offsetable %lo().])])
3196 i[34567]86-*-* | x86_64-*-*)
3200 # Full C++ conformance when using a shared libstdc++-v3 requires some
3201 # support from the Cygwin DLL, which in more recent versions exports
3202 # wrappers to aid in interposing and redirecting operators new, delete,
3203 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3204 # are configuring for a version of Cygwin that exports the wrappers.
3205 if test x$host = x$target; then
3206 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3208 # Can't check presence of libc functions during cross-compile, so
3209 # we just have to assume we're building for an up-to-date target.
3210 gcc_ac_cygwin_dll_wrappers=yes
3212 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3213 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3214 [Define if you want to generate code by default that assumes that the
3215 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3218 cygwin* | pe | mingw32*)
3219 # Recent binutils allows the three-operand form of ".comm" on PE. This
3220 # definition is used unconditionally to initialise the default state of
3221 # the target option variable that governs usage of the feature.
3222 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3223 [2,19,52],,[.comm foo,1,32])
3224 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3225 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3226 [Define if your assembler supports specifying the alignment
3227 of objects allocated using the GAS .comm command.])
3228 # Used for DWARF 2 in PE
3229 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3230 gcc_cv_as_ix86_pe_secrel32,
3236 [if test x$gcc_cv_ld != x \
3237 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3238 gcc_cv_as_ix86_pe_secrel32=yes
3241 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3242 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3243 # Test if the assembler supports the extended form of the .section
3244 # directive that specifies section alignment. LTO support uses this,
3245 # but normally only after installation, so we warn but don't fail the
3246 # configure if LTO is enabled but the assembler does not support it.
3247 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3248 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3249 if test x$gcc_cv_as_section_has_align != xyes; then
3250 case ",$enable_languages," in
3252 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3259 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3260 gcc_cv_as_ix86_filds,,,
3261 [filds mem; fists mem],,
3262 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3263 [Define if your assembler uses filds and fists mnemonics.])])
3265 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3266 gcc_cv_as_ix86_fildq,,,
3267 [fildq mem; fistpq mem],,
3268 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3269 [Define if your assembler uses fildq and fistq mnemonics.])])
3271 gcc_GAS_CHECK_FEATURE([cmov syntax],
3272 gcc_cv_as_ix86_cmov_sun_syntax,,,
3273 [cmovl.l %edx, %eax],,
3274 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3275 [Define if your assembler supports the Sun syntax for cmov.])])
3277 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3278 gcc_cv_as_ix86_ffreep,,,
3280 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3281 [Define if your assembler supports the ffreep mnemonic.])])
3283 gcc_GAS_CHECK_FEATURE([.quad directive],
3284 gcc_cv_as_ix86_quad,,,
3286 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3287 [Define if your assembler supports the .quad directive.])])
3289 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3290 gcc_cv_as_ix86_sahf,,,
3293 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3294 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3296 gcc_GAS_CHECK_FEATURE([swap suffix],
3297 gcc_cv_as_ix86_swap,,,
3298 [movl.s %esp, %ebp],,
3299 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3300 [Define if your assembler supports the swap suffix.])])
3302 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3303 gcc_cv_as_ix86_diff_sect_delta,,,
3311 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3312 [Define if your assembler supports the subtraction of symbols in different sections.])])
3314 # These two are used unconditionally by i386.[ch]; it is to be defined
3315 # to 1 if the feature is present, 0 otherwise.
3316 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3317 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3323 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3324 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3325 [Define true if the assembler supports '.long foo@GOTOFF'.])
3327 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3328 gcc_cv_as_ix86_rep_lock_prefix,,,
3330 lock orl $0, (%esp)])
3331 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_REP_LOCK_PREFIX,
3332 [`if test $gcc_cv_as_ix86_rep_lock_prefix = yes; then echo 1; else echo 0; fi`],
3333 [Define true if the assembler supports 'rep <insn>, lock <insn>'.])
3338 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3339 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3341 addl r15 = @ltoffx(x#), gp
3343 ld8.mov r16 = [[r15]], x#],,
3344 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3345 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3351 *-*-aix*) conftest_s=' .machine "pwr5"
3355 gcc_GAS_CHECK_FEATURE([.machine directive support],
3356 gcc_cv_as_machine_directive,,,
3357 [ .machine ppc7400])
3358 if test x$gcc_cv_as_machine_directive != xyes; then
3359 echo "*** This target requires an assembler supporting \".machine\"" >&2
3360 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3361 test x$build = x$target && exit 1
3365 *) conftest_s=' .machine power4
3370 gcc_GAS_CHECK_FEATURE([mfcr field support],
3371 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3373 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3374 [Define if your assembler supports mfcr field.])])
3377 *-*-aix*) conftest_s=' .machine "pwr5"
3380 *) conftest_s=' .machine power5
3385 gcc_GAS_CHECK_FEATURE([popcntb support],
3386 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3388 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3389 [Define if your assembler supports popcntb field.])])
3392 *-*-aix*) conftest_s=' .machine "pwr5x"
3395 *) conftest_s=' .machine power5
3400 gcc_GAS_CHECK_FEATURE([fp round support],
3401 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3403 [AC_DEFINE(HAVE_AS_FPRND, 1,
3404 [Define if your assembler supports fprnd.])])
3407 *-*-aix*) conftest_s=' .machine "pwr6"
3410 *) conftest_s=' .machine power6
3415 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3416 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3418 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3419 [Define if your assembler supports mffgpr and mftgpr.])])
3422 *-*-aix*) conftest_s=' .csect .text[[PR]]
3424 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3428 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3429 *) conftest_s=' .text
3431 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3434 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3435 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3437 [AC_DEFINE(HAVE_AS_REL16, 1,
3438 [Define if your assembler supports R_PPC_REL16 relocs.])])
3441 *-*-aix*) conftest_s=' .machine "pwr6"
3444 *) conftest_s=' .machine power6
3449 gcc_GAS_CHECK_FEATURE([compare bytes support],
3450 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3452 [AC_DEFINE(HAVE_AS_CMPB, 1,
3453 [Define if your assembler supports cmpb.])])
3456 *-*-aix*) conftest_s=' .machine "pwr6"
3459 *) conftest_s=' .machine power6
3464 gcc_GAS_CHECK_FEATURE([decimal float support],
3465 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3467 [AC_DEFINE(HAVE_AS_DFP, 1,
3468 [Define if your assembler supports DFP instructions.])])
3471 *-*-aix*) conftest_s=' .machine "pwr7"
3474 *) conftest_s=' .machine power7
3479 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3480 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3482 [AC_DEFINE(HAVE_AS_VSX, 1,
3483 [Define if your assembler supports VSX instructions.])])
3486 *-*-aix*) conftest_s=' .machine "pwr7"
3489 *) conftest_s=' .machine power7
3494 gcc_GAS_CHECK_FEATURE([popcntd support],
3495 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3497 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3498 [Define if your assembler supports POPCNTD instructions.])])
3501 *-*-aix*) conftest_s=' .csect .text[[PR]]
3503 *) conftest_s=' .text
3507 gcc_GAS_CHECK_FEATURE([lwsync support],
3508 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3510 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3511 [Define if your assembler supports LWSYNC instructions.])])
3514 *-*-aix*) conftest_s=' .machine "476"
3517 *) conftest_s=' .machine "476"
3522 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3523 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3525 [AC_DEFINE(HAVE_AS_DCI, 1,
3526 [Define if your assembler supports the DCI/ICI instructions.])])
3528 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3529 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3530 [.gnu_attribute 4,1],,
3531 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3532 [Define if your assembler supports .gnu_attribute.])])
3534 gcc_GAS_CHECK_FEATURE([tls marker support],
3535 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3536 [ bl __tls_get_addr(x@tlsgd)],,
3537 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3538 [Define if your assembler supports arg info for __tls_get_addr.])])
3542 gcc_GAS_CHECK_FEATURE([.ref support],
3543 gcc_cv_as_aix_ref, [2.21.0],,
3544 [ .csect stuff[[rw]]
3550 [AC_DEFINE(HAVE_AS_REF, 1,
3551 [Define if your assembler supports .ref])])
3557 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3558 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3559 [ lw $4,%gp_rel(foo)($4)],,
3560 [if test x$target_cpu_default = x
3561 then target_cpu_default=MASK_EXPLICIT_RELOCS
3562 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3564 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3565 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3566 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3567 [Define if the assembler understands -mno-shared.])])
3569 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3570 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3571 [.gnu_attribute 4,1],,
3572 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3573 [Define if your assembler supports .gnu_attribute.])])
3575 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3576 gcc_cv_as_mips_dtprelword, [2,18,0],,
3577 [.section .tdata,"awT",@progbits
3581 .dtprelword x+0x8000],,
3582 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3583 [Define if your assembler supports .dtprelword.])])
3585 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3586 gcc_cv_as_ld_jalr_reloc=no
3587 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3588 if test $in_tree_ld = yes ; then
3589 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3590 && test $in_tree_ld_is_elf = yes; then
3591 gcc_cv_as_ld_jalr_reloc=yes
3593 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3594 echo ' .ent x' > conftest.s
3595 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3596 echo ' ld $25,%call16(y)($28)' >> conftest.s
3597 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3598 echo '1: jalr $25' >> conftest.s
3599 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3600 echo '1: jalr $25' >> conftest.s
3601 echo ' .end x' >> conftest.s
3602 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3603 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3604 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3605 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3606 gcc_cv_as_ld_jalr_reloc=yes
3612 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3613 if test x$target_cpu_default = x; then
3614 target_cpu_default=MASK_RELAX_PIC_CALLS
3616 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3619 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3621 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3622 [gcc_cv_ld_mips_personality_relaxation],
3623 [gcc_cv_ld_mips_personality_relaxation=no
3624 if test $in_tree_ld = yes ; then
3625 if test "$gcc_cv_gld_major_version" -eq 2 \
3626 -a "$gcc_cv_gld_minor_version" -ge 21 \
3627 -o "$gcc_cv_gld_major_version" -gt 2; then
3628 gcc_cv_ld_mips_personality_relaxation=yes
3630 elif test x$gcc_cv_as != x \
3631 -a x$gcc_cv_ld != x \
3632 -a x$gcc_cv_readelf != x ; then
3633 cat > conftest.s <<EOF
3635 .cfi_personality 0x80,indirect_ptr
3642 .section .data,"aw",@progbits
3646 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3647 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3648 if $gcc_cv_readelf -d conftest 2>&1 \
3649 | grep TEXTREL > /dev/null 2>&1; then
3651 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3652 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3655 gcc_cv_ld_mips_personality_relaxation=yes
3659 rm -f conftest.s conftest.o conftest])
3660 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3661 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3662 [Define if your linker can relax absolute .eh_frame personality
3663 pointers into PC-relative form.])
3668 # Mips and HP-UX need the GNU assembler.
3669 # Linux on IA64 might be able to use the Intel assembler.
3672 mips*-*-* | *-*-hpux* )
3673 if test x$gas_flag = xyes \
3674 || test x"$host" != x"$build" \
3675 || test ! -x "$gcc_cv_as" \
3676 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3679 echo "*** This configuration requires the GNU assembler" >&2
3685 # ??? Not all targets support dwarf2 debug_line, even within a version
3686 # of gas. Moreover, we need to emit a valid instruction to trigger any
3687 # info to the output file. So, as supported targets are added to gas 2.11,
3688 # add some instruction here to (also) show we expect this might work.
3689 # ??? Once 2.11 is released, probably need to add first known working
3690 # version to the per-target configury.
3692 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3693 | x86_64*-*-* | hppa*-*-* | arm*-*-* \
3694 | xstormy16*-*-* | cris-*-* | crisv32-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \
3695 | spu-*-* | fido*-*-* | m32c-*-*)
3698 ia64*-*-* | s390*-*-*)
3705 if test x"$insn" != x; then
3707 .file 1 \"conftest.s\"
3710 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3711 gcc_cv_as_dwarf2_debug_line,
3712 [elf,2,11,0],, [$conftest_s],
3713 [if test x$gcc_cv_objdump != x \
3714 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3715 | grep debug_line > /dev/null 2>&1; then
3716 gcc_cv_as_dwarf2_debug_line=yes
3719 # The .debug_line file table must be in the exact order that
3720 # we specified the files, since these indices are also used
3721 # by DW_AT_decl_file. Approximate this test by testing if
3722 # the assembler bitches if the same index is assigned twice.
3723 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3724 gcc_cv_as_dwarf2_file_buggy,,,
3728 if test $gcc_cv_as_dwarf2_debug_line = yes \
3729 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3730 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3731 [Define if your assembler supports dwarf2 .file/.loc directives,
3732 and preserves file table indices exactly as given.])
3735 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3736 gcc_cv_as_gdwarf2_flag,
3737 [elf,2,11,0], [--gdwarf2], [$insn],,
3738 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3739 [Define if your assembler supports the --gdwarf2 option.])])
3741 gcc_GAS_CHECK_FEATURE([--gstabs option],
3742 gcc_cv_as_gstabs_flag,
3743 [elf,2,11,0], [--gstabs], [$insn],
3744 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3745 # and warns about it, but still exits successfully. So check for
3747 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3749 else gcc_cv_as_gstabs_flag=yes
3751 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3752 [Define if your assembler supports the --gstabs option.])])
3754 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3755 gcc_cv_as_debug_prefix_map_flag,
3756 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3757 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3758 [Define if your assembler supports the --debug-prefix-map option.])])
3761 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3764 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3765 [Define if your assembler supports .lcomm with an alignment field.])])
3767 AC_ARG_ENABLE(gnu-unique-object,
3768 [ --enable-gnu-unique-object enable the use of the @gnu_unique_object ELF extension on
3770 [case $enable_gnu_unique_object in
3772 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
3773 Valid choices are 'yes' and 'no'.]) ;;
3775 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
3777 [.type foo, @gnu_unique_object],,
3778 # Also check for ld.so support, i.e. glibc 2.11 or higher.
3779 [[if test x$host = x$build -a x$host = x$target &&
3780 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
3781 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
3782 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
3783 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
3784 if test "$glibcnum" -ge 2011 ; then
3785 enable_gnu_unique_object=yes
3788 if test x$enable_gnu_unique_object = xyes; then
3789 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
3790 [Define if your assembler supports @gnu_unique_object.])
3793 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3794 [gcc_cv_as_line_zero],
3795 [gcc_cv_as_line_zero=no
3796 if test $in_tree_gas = yes; then
3797 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3798 elif test "x$gcc_cv_as" != x; then
3799 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3800 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3801 test "x`cat conftest.out`" = x
3803 gcc_cv_as_line_zero=yes
3805 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3806 cat conftest.s >&AS_MESSAGE_LOG_FD
3807 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3808 cat conftest.out >&AS_MESSAGE_LOG_FD
3810 rm -f conftest.o conftest.s conftest.out
3812 if test "x$gcc_cv_as_line_zero" = xyes; then
3813 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3814 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3817 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3818 gcc_cv_ld_eh_frame_hdr=no
3819 if test $in_tree_ld = yes ; then
3820 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3821 && test $in_tree_ld_is_elf = yes; then
3822 gcc_cv_ld_eh_frame_hdr=yes
3824 elif test x$gcc_cv_ld != x; then
3825 # Check if linker supports --eh-frame-hdr option
3826 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3827 gcc_cv_ld_eh_frame_hdr=yes
3830 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3831 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3832 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3833 [Define if your linker supports --eh-frame-hdr option.])
3835 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3837 AC_MSG_CHECKING(linker position independent executable support)
3839 if test $in_tree_ld = yes ; then
3840 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3841 && test $in_tree_ld_is_elf = yes; then
3844 elif test x$gcc_cv_ld != x; then
3845 # Check if linker supports -pie option
3846 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3850 if test x"$gcc_cv_ld_pie" = xyes; then
3851 AC_DEFINE(HAVE_LD_PIE, 1,
3852 [Define if your linker supports -pie option.])
3854 AC_MSG_RESULT($gcc_cv_ld_pie)
3856 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3857 gcc_cv_ld_eh_gc_sections=no
3858 if test $in_tree_ld = yes ; then
3859 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3860 && test $in_tree_ld_is_elf = yes; then
3861 gcc_cv_ld_eh_gc_sections=yes
3863 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3864 cat > conftest.s <<EOF
3867 .type _start, @function
3870 .size _start, .-_start
3871 .section .text.foo,"ax",@progbits
3872 .type foo, @function
3876 .section .gcc_except_table.foo,"a",@progbits
3879 .section .eh_frame,"a",@progbits
3882 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3883 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3884 | grep "gc-sections option ignored" > /dev/null; then
3885 gcc_cv_ld_eh_gc_sections=no
3886 elif $gcc_cv_objdump -h conftest 2> /dev/null \
3887 | grep gcc_except_table > /dev/null; then
3888 gcc_cv_ld_eh_gc_sections=yes
3889 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3890 if test x$gcc_cv_as_comdat_group != xyes; then
3891 gcc_cv_ld_eh_gc_sections=no
3892 cat > conftest.s <<EOF
3895 .type _start, @function
3898 .size _start, .-_start
3899 .section .gnu.linkonce.t.foo,"ax",@progbits
3900 .type foo, @function
3904 .section .gcc_except_table.foo,"a",@progbits
3907 .section .eh_frame,"a",@progbits
3910 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3911 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3912 | grep "gc-sections option ignored" > /dev/null; then
3913 gcc_cv_ld_eh_gc_sections=no
3914 elif $gcc_cv_objdump -h conftest 2> /dev/null \
3915 | grep gcc_except_table > /dev/null; then
3916 gcc_cv_ld_eh_gc_sections=yes
3922 rm -f conftest.s conftest.o conftest
3926 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3927 gcc_cv_ld_eh_gc_sections=no
3930 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3931 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3932 [Define if your linker supports garbage collection of
3933 sections in presence of EH frames.])
3935 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3941 AC_CACHE_CHECK(linker --as-needed support,
3942 gcc_cv_ld_as_needed,
3943 [gcc_cv_ld_as_needed=no
3944 if test $in_tree_ld = yes ; then
3945 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3946 && test $in_tree_ld_is_elf = yes; then
3947 gcc_cv_ld_as_needed=yes
3949 elif test x$gcc_cv_ld != x; then
3950 # Check if linker supports --as-needed and --no-as-needed options
3951 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3952 gcc_cv_ld_as_needed=yes
3956 if test x"$gcc_cv_ld_as_needed" = xyes; then
3957 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3958 [Define if your linker supports --as-needed and --no-as-needed options.])
3961 case "$target:$tm_file" in
3962 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3963 AC_CACHE_CHECK(linker support for omitting dot symbols,
3964 gcc_cv_ld_no_dot_syms,
3965 [gcc_cv_ld_no_dot_syms=no
3966 if test $in_tree_ld = yes ; then
3967 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3968 gcc_cv_ld_no_dot_syms=yes
3970 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3971 cat > conftest1.s <<EOF
3975 cat > conftest2.s <<EOF
3976 .section ".opd","aw"
3981 .quad .LEfoo,.TOC.@tocbase,0
3987 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3988 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3989 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3990 gcc_cv_ld_no_dot_syms=yes
3992 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3995 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3996 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3997 [Define if your PowerPC64 linker only needs function descriptor syms.])
4002 AC_CACHE_CHECK(linker --build-id support,
4004 [gcc_cv_ld_buildid=no
4005 if test $in_tree_ld = yes ; then
4006 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4007 "$gcc_cv_gld_minor_version" -ge 18 -o \
4008 "$gcc_cv_gld_major_version" -gt 2 \
4009 && test $in_tree_ld_is_elf = yes; then
4010 gcc_cv_ld_buildid=yes
4012 elif test x$gcc_cv_ld != x; then
4013 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4014 gcc_cv_ld_buildid=yes
4017 if test x"$gcc_cv_ld_buildid" = xyes; then
4018 AC_DEFINE(HAVE_LD_BUILDID, 1,
4019 [Define if your linker supports --build-id.])
4022 AC_ARG_ENABLE(linker-build-id,
4023 [ --enable-linker-build-id
4024 compiler will always pass --build-id to linker],
4026 enable_linker_build_id=no)
4028 if test x"$enable_linker_build_id" = xyes; then
4029 if test x"$gcc_cv_ld_buildid" = xyes; then
4030 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4031 [Define if gcc should always pass --build-id to linker.])
4033 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4037 AC_CACHE_CHECK(linker --sysroot support,
4039 [gcc_cv_ld_sysroot=no
4040 if test $in_tree_ld = yes ; then
4041 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4042 gcc_cv_ld_sysroot=yes
4044 elif test x$gcc_cv_ld != x; then
4045 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4046 gcc_cv_ld_sysroot=yes
4049 if test x"$gcc_cv_ld_sysroot" = xyes; then
4050 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4051 [Define if your linker supports --sysroot.])
4054 if test x$with_sysroot = x && test x$host = x$target \
4055 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4056 && test "$prefix" != "NONE"; then
4057 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4058 [Define to PREFIX/include if cpp should also search that directory.])
4061 # Test for stack protector support in target C library.
4062 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4063 gcc_cv_libc_provides_ssp,
4064 [gcc_cv_libc_provides_ssp=no
4066 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4067 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4068 if test "x$with_headers" != x; then
4069 glibc_header_dir=$with_headers
4070 elif test "x$with_sysroot" = x; then
4071 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4072 elif test "x$with_build_sysroot" != "x"; then
4073 glibc_header_dir="${with_build_sysroot}/usr/include"
4074 elif test "x$with_sysroot" = xyes; then
4075 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4077 glibc_header_dir="${with_sysroot}/usr/include"
4080 glibc_header_dir=/usr/include
4082 [# glibc 2.4 and later provides __stack_chk_fail and
4083 # either __stack_chk_guard, or TLS access to stack guard canary.
4084 if test -f $glibc_header_dir/features.h \
4085 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4086 $glibc_header_dir/features.h > /dev/null; then
4087 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4088 $glibc_header_dir/features.h > /dev/null; then
4089 gcc_cv_libc_provides_ssp=yes
4090 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4091 $glibc_header_dir/features.h > /dev/null \
4092 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4093 $glibc_header_dir/features.h > /dev/null; then
4094 gcc_cv_libc_provides_ssp=yes
4095 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4096 $glibc_header_dir/features.h > /dev/null && \
4097 test -f $glibc_header_dir/bits/uClibc_config.h && \
4098 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4099 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
4100 gcc_cv_libc_provides_ssp=yes
4105 # Avoid complicated tests (see
4106 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4107 # simply assert that glibc does provide this, which is true for all
4108 # realistically usable GNU/Hurd configurations.
4109 gcc_cv_libc_provides_ssp=yes;;
4110 *-*-darwin* | *-*-freebsd*)
4111 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4112 [echo "no __stack_chk_fail on this target"])
4114 *) gcc_cv_libc_provides_ssp=no ;;
4117 if test x$gcc_cv_libc_provides_ssp = xyes; then
4118 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4119 [Define if your target C library provides stack protector support])
4122 # Check if TFmode long double should be used by default or not.
4123 # Some glibc targets used DFmode long double, but with glibc 2.4
4124 # and later they can use TFmode.
4126 powerpc*-*-linux* | \
4131 AC_ARG_WITH(long-double-128,
4132 [ --with-long-double-128 Use 128-bit long double by default.],
4133 gcc_cv_target_ldbl128="$with_long_double_128",
4134 [[gcc_cv_target_ldbl128=no
4135 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4136 if test "x$with_sysroot" = x; then
4137 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4138 elif test "x$with_build_sysroot" != "x"; then
4139 glibc_header_dir="${with_build_sysroot}/usr/include"
4140 elif test "x$with_sysroot" = xyes; then
4141 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4143 glibc_header_dir="${with_sysroot}/usr/include"
4146 glibc_header_dir=/usr/include
4148 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4149 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4150 && gcc_cv_target_ldbl128=yes
4154 if test x$gcc_cv_target_ldbl128 = xyes; then
4155 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4156 [Define if TFmode long double should be the default])
4159 # Find out what GC implementation we want, or may, use.
4161 [ --with-gc={page,zone} choose the garbage collection mechanism to use
4169 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4172 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4177 echo "Using $GGC for garbage collection."
4179 # Libraries to use on the host. This will normally be set by the top
4180 # level Makefile. Here we simply capture the value for our Makefile.
4181 if test -z "${HOST_LIBS+set}"; then
4186 # Use the system's zlib library.
4188 zlibinc="-I\$(srcdir)/../zlib"
4189 AC_ARG_WITH(system-zlib,
4190 [ --with-system-zlib use installed libz],
4197 dnl Very limited version of automake's enable-maintainer-mode
4199 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4200 dnl maintainer-mode is disabled by default
4201 AC_ARG_ENABLE(maintainer-mode,
4202 [ --enable-maintainer-mode
4203 enable make rules and dependencies not useful
4204 (and sometimes confusing) to the casual installer],
4205 maintainer_mode=$enableval,
4208 AC_MSG_RESULT($maintainer_mode)
4210 if test "$maintainer_mode" = "yes"; then
4221 # Make empty files to contain the specs and options for each language.
4222 # Then add #include lines to for a compiler that has specs and/or options.
4228 # These (without "all_") are set in each config-lang.in.
4229 # `language' must be a single word so is spelled singularly.
4232 all_outputs='Makefile gccbug'
4233 # List of language makefile fragments.
4235 # Additional files for gengtype
4236 all_gtfiles="$target_gtfiles"
4238 # These are the languages that are set in --enable-languages,
4239 # and are available in the GCC tree.
4240 all_selected_languages=
4242 # Add the language fragments.
4243 # Languages are added via two mechanisms. Some information must be
4244 # recorded in makefile variables, these are defined in config-lang.in.
4245 # We accumulate them and plug them into the main Makefile.
4246 # The other mechanism is a set of hooks for each of the main targets
4247 # like `clean', `install', etc.
4249 language_hooks="Make-hooks"
4251 for lang in ${srcdir}/*/config-lang.in
4254 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4256 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4257 if test "x$lang_alias" = x
4259 echo "$lang doesn't set \$language." 1>&2
4262 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4263 subdirs="$subdirs $subdir"
4265 # $gcc_subdir is where the gcc integration files are to be found
4266 # for a language, both for internal compiler purposes (compiler
4267 # sources implementing front-end to GCC tree converters), and for
4268 # build infrastructure purposes (Make-lang.in, etc.)
4270 # This will be <subdir> (relative to $srcdir) if a line like
4271 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4272 # is found in <langdir>/config-lang.in, and will remain <langdir>
4275 # Except for the language alias (fetched above), the regular
4276 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4277 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4278 # only this and the language alias.
4280 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4281 if [ "$gcc_subdir" = "" ]; then
4282 gcc_subdir="$subdir"
4285 case ",$enable_languages," in
4287 all_selected_languages="$all_selected_languages $lang_alias"
4288 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4289 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4301 . ${srcdir}/$gcc_subdir/config-lang.in
4302 if test "x$language" = x
4304 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4309 case ",$enable_languages," in
4312 for i in $subdir_requires; do
4313 test -f "${srcdir}/$i/config-lang.in" && continue
4321 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4322 if test -f $srcdir/$gcc_subdir/lang.opt; then
4323 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4325 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4326 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4328 all_languages="$all_languages $language"
4329 all_compilers="$all_compilers $compilers"
4330 all_outputs="$all_outputs $outputs"
4331 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4332 case ",$enable_languages," in
4334 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4336 AC_SUBST(enable_lto)
4337 # LTO needs to speak the platform's object file format, and has a
4338 # number of implementations of the required binary file access APIs.
4339 # ELF is the most common, and default. We only link libelf if ELF
4340 # is indeed the selected format.
4341 LTO_BINARY_READER=${lto_binary_reader}
4342 LTO_USE_LIBELF=-lelf
4343 if test "x$lto_binary_reader" != "xlto-elf" ; then
4346 AC_SUBST(LTO_BINARY_READER)
4347 AC_SUBST(LTO_USE_LIBELF)
4353 # Pick up gtfiles for c
4355 . ${srcdir}/c-config-lang.in
4356 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4359 for language in $all_selected_languages
4361 check_languages="$check_languages check-$language"
4364 # We link each language in with a set of hooks, reached indirectly via
4365 # lang.${target}. Only do so for selected languages.
4369 target_list="all.cross start.encap rest.encap tags \
4370 install-common install-man install-info install-pdf install-html dvi \
4371 pdf html uninstall info man srcextra srcman srcinfo \
4372 mostlyclean clean distclean maintainer-clean install-plugin"
4374 for t in $target_list
4377 for lang in $all_selected_languages
4381 echo "lang.$t: $x" >> Make-hooks
4390 echo "dir ." > .gdbinit
4391 echo "dir ${srcdir}" >> .gdbinit
4392 if test x$gdb_needs_out_file_path = xyes
4394 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4396 if test "x$subdirs" != x; then
4399 echo "dir ${srcdir}/$s" >> .gdbinit
4402 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4404 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4405 AC_SUBST(gcc_tooldir)
4408 # Find a directory in which to install a shared libgcc.
4410 AC_ARG_ENABLE(version-specific-runtime-libs,
4411 [ --enable-version-specific-runtime-libs
4412 specify that runtime libraries should be
4413 installed in a compiler-specific directory])
4415 AC_ARG_WITH(slibdir,
4416 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
4417 slibdir="$with_slibdir",
4418 if test "${enable_version_specific_runtime_libs+set}" = set; then
4419 slibdir='$(libsubdir)'
4420 elif test "$host" != "$target"; then
4421 slibdir='$(build_tooldir)/lib'
4427 # Substitute configuration variables
4430 AC_SUBST(all_compilers)
4431 AC_SUBST(all_gtfiles)
4432 AC_SUBST(all_lang_makefrags)
4433 AC_SUBST(all_languages)
4434 AC_SUBST(all_selected_languages)
4435 AC_SUBST(build_exeext)
4436 AC_SUBST(build_install_headers_dir)
4437 AC_SUBST(build_xm_file_list)
4438 AC_SUBST(build_xm_include_list)
4439 AC_SUBST(build_xm_defines)
4440 AC_SUBST(build_file_translate)
4441 AC_SUBST(check_languages)
4442 AC_SUBST(cpp_install_dir)
4443 AC_SUBST(xmake_file)
4444 AC_SUBST(tmake_file)
4445 AC_SUBST(TM_ENDIAN_CONFIG)
4446 AC_SUBST(TM_MULTILIB_CONFIG)
4447 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4448 AC_SUBST(extra_gcc_objs)
4449 AC_SUBST(extra_headers_list)
4450 AC_SUBST(extra_objs)
4451 AC_SUBST(extra_parts)
4452 AC_SUBST(extra_passes)
4453 AC_SUBST(extra_programs)
4454 AC_SUBST(float_h_file)
4455 AC_SUBST(gcc_config_arguments)
4456 AC_SUBST(gcc_gxx_include_dir)
4457 AC_SUBST(host_exeext)
4458 AC_SUBST(host_xm_file_list)
4459 AC_SUBST(host_xm_include_list)
4460 AC_SUBST(host_xm_defines)
4461 AC_SUBST(out_host_hook_obj)
4463 AC_SUBST(lang_opt_files)
4464 AC_SUBST(lang_specs_files)
4465 AC_SUBST(lang_tree_files)
4466 AC_SUBST(local_prefix)
4468 AC_SUBST(objc_boehm_gc)
4470 AC_SUBST(out_object_file)
4471 AC_SUBST(thread_file)
4472 AC_SUBST(tm_file_list)
4473 AC_SUBST(tm_include_list)
4474 AC_SUBST(tm_defines)
4475 AC_SUBST(tm_p_file_list)
4476 AC_SUBST(tm_p_include_list)
4477 AC_SUBST(xm_file_list)
4478 AC_SUBST(xm_include_list)
4479 AC_SUBST(xm_defines)
4480 AC_SUBST(use_gcc_stdint)
4481 AC_SUBST(c_target_objs)
4482 AC_SUBST(cxx_target_objs)
4483 AC_SUBST(fortran_target_objs)
4484 AC_SUBST(target_cpu_default)
4486 AC_SUBST_FILE(language_hooks)
4489 if test x${build} = x${host} ; then
4490 if test x${host} = x${target} ; then
4491 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4493 echo "Links are now set up to build a cross-compiler" 1>&2
4494 echo " from ${host} to ${target}." 1>&2
4497 if test x${host} = x${target} ; then
4498 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4499 echo " for ${target}." 1>&2
4501 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4502 echo " from ${host} to ${target}." 1>&2
4506 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4507 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4509 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4510 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4512 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4513 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4514 if test "x${CLOOGLIBS}" != "x" ; then
4515 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4518 AC_ARG_VAR(LIBELFLIBS,[How to link libelf])
4519 AC_ARG_VAR(LIBELFINC,[How to find libelf include files])
4520 if test "x${LIBELFLIBS}" != "x" ; then
4521 AC_DEFINE(HAVE_libelf, 1, [Define if libelf is in use.])
4524 # Check for plugin support
4525 AC_ARG_ENABLE(plugin,
4526 [ --enable-plugin enable plugin support],
4527 enable_plugin=$enableval,
4528 enable_plugin=yes; default_plugin=yes)
4531 if test x"$enable_plugin" = x"yes"; then
4535 export_sym_check="$gcc_cv_nm -g"
4538 export_sym_check="$gcc_cv_objdump -T"
4541 AC_MSG_CHECKING([for exported symbols])
4542 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4543 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4544 if $export_sym_check conftest | grep foobar > /dev/null; then
4545 : # No need to use a flag
4547 AC_MSG_CHECKING([for -rdynamic])
4548 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
4549 if $export_sym_check conftest | grep foobar > /dev/null; then
4551 pluginlibs="-rdynamic"
4556 AC_MSG_RESULT([$plugin_rdynamic])
4561 AC_SEARCH_LIBS([dlopen], [dl])
4562 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
4563 pluginlibs="$pluginlibs -ldl"
4567 # Check that we can build shared objects with -fPIC -shared
4568 saved_LDFLAGS="$LDFLAGS"
4571 LDFLAGS="$LDFLAGS -fPIC -shared -undefined dynamic_lookup"
4574 LDFLAGS="$LDFLAGS -fPIC -shared"
4577 AC_MSG_CHECKING([for -fPIC -shared])
4579 [extern int X;],[return X == 0;],
4580 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
4581 [AC_MSG_RESULT([no]); have_pic_shared=no])
4582 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
4586 LDFLAGS="$saved_LDFLAGS"
4588 # If plugin support had been requested but not available, fail.
4589 if test x"$enable_plugin" = x"no" ; then
4590 if test x"$default_plugin" != x"yes"; then
4592 Building GCC with plugin support requires a host that supports
4593 -fPIC, -shared, -ldl and -rdynamic.])
4598 AC_SUBST(pluginlibs)
4599 AC_SUBST(enable_plugin)
4600 if test x"$enable_plugin" = x"yes"; then
4601 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
4604 # Configure the subdirectories
4605 # AC_CONFIG_SUBDIRS($subdirs)
4607 # Create the Makefile
4608 # and configure language subdirectories
4609 AC_CONFIG_FILES($all_outputs)
4611 AC_CONFIG_COMMANDS([default],
4613 case ${CONFIG_HEADERS} in
4614 *auto-host.h:config.in*)
4617 # Make sure all the subdirs exist.
4618 for d in $subdirs doc build
4620 test -d $d || mkdir $d
4623 [subdirs='$subdirs'])