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 $gcc_cv_header_inttypes_h = yes; then
1010 AC_DEFINE(HAVE_INTTYPES_H, 1,
1011 [Define if you have a working <inttypes.h> header file.])
1014 dnl Disabled until we have a complete test for buggy enum bitfields.
1015 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1017 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1018 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1019 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1020 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1021 putchar_unlocked putc_unlocked)
1022 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1023 sysconf strsignal getrusage nl_langinfo \
1024 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1027 if test x$ac_cv_func_mbstowcs = xyes; then
1028 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1029 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1035 [gcc_cv_func_mbstowcs_works=yes],
1036 [gcc_cv_func_mbstowcs_works=no],
1037 [gcc_cv_func_mbstowcs_works=yes])])
1038 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1039 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1040 [Define this macro if mbstowcs does not crash when its
1041 first argument is NULL.])
1045 AC_CHECK_TYPE(ssize_t, int)
1046 AC_CHECK_TYPE(caddr_t, char *)
1048 gcc_AC_FUNC_MMAP_BLACKLIST
1052 # Under VMS, vfork works very differently than on Unix. The standard test
1053 # won't work, and it isn't easily adaptable. It makes more sense to
1055 ac_cv_func_vfork_works=yes
1061 # Until we have in-tree GNU iconv:
1063 AC_SUBST(LIBICONV_DEP)
1069 # We will need to find libiberty.h and ansidecl.h
1070 saved_CFLAGS="$CFLAGS"
1071 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1072 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1073 strsignal strstr strverscmp \
1074 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1075 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1076 #include "ansidecl.h"
1077 #include "system.h"])
1079 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1080 #include "ansidecl.h"
1082 #ifdef HAVE_SYS_RESOURCE_H
1083 #include <sys/resource.h>
1087 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1088 #include "ansidecl.h"
1090 #ifdef HAVE_SYS_RESOURCE_H
1091 #include <sys/resource.h>
1093 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1094 [Define to `long' if <sys/resource.h> doesn't define.])])
1096 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1097 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1098 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1099 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1100 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1101 #include "ansidecl.h"
1110 gcc_AC_CHECK_DECLS(times, , ,[
1111 #include "ansidecl.h"
1113 #ifdef HAVE_SYS_TIMES_H
1114 #include <sys/times.h>
1118 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1119 #include "ansidecl.h"
1124 # More time-related stuff.
1125 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1126 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1127 #include "ansidecl.h"
1129 #ifdef HAVE_SYS_TIMES_H
1130 #include <sys/times.h>
1132 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1133 if test $ac_cv_struct_tms = yes; then
1134 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1135 [Define if <sys/times.h> defines struct tms.])
1138 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1139 # revisit after autoconf 2.50.
1140 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1141 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1142 #include "ansidecl.h"
1144 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1145 if test $gcc_cv_type_clock_t = yes; then
1146 AC_DEFINE(HAVE_CLOCK_T, 1,
1147 [Define if <time.h> defines clock_t.])
1150 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1151 CFLAGS="$saved_CFLAGS"
1153 gcc_AC_INITFINI_ARRAY
1155 # mkdir takes a single argument on some systems.
1156 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1164 # With Setjmp/Longjmp based exception handling.
1165 AC_ARG_ENABLE(sjlj-exceptions,
1166 [ --enable-sjlj-exceptions
1167 arrange to use setjmp/longjmp exception handling],
1170 if test $enableval != yes; then
1171 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1176 force_sjlj_exceptions=yes],
1179 force_sjlj_exceptions=yes
1183 force_sjlj_exceptions=no
1186 if test $force_sjlj_exceptions = yes; then
1187 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1188 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1189 [Define 0/1 to force the choice for exception handling model.])
1192 # For platforms with the unwind ABI which includes an unwind library,
1193 # libunwind, we can choose to use the system libunwind.
1194 # config.gcc also contains tests of with_system_libunwind.
1195 GCC_CHECK_UNWIND_GETIPINFO
1197 # --------------------------------------------------------
1198 # Build, host, and target specific configuration fragments
1199 # --------------------------------------------------------
1201 # Collect build-machine-specific information.
1202 . ${srcdir}/config.build
1204 # Collect host-machine-specific information.
1205 . ${srcdir}/config.host
1209 # Collect target-machine-specific information.
1210 . ${srcdir}/config.gcc
1212 extra_objs="${host_extra_objs} ${extra_objs}"
1213 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1215 # Default the target-machine variables that were not explicitly set.
1216 if test x"$tm_file" = x
1217 then tm_file=$cpu_type/$cpu_type.h; fi
1219 if test x"$extra_headers" = x
1220 then extra_headers=; fi
1222 if test x$md_file = x
1223 then md_file=$cpu_type/$cpu_type.md; fi
1225 if test x$out_file = x
1226 then out_file=$cpu_type/$cpu_type.c; fi
1228 if test x"$tmake_file" = x
1229 then tmake_file=$cpu_type/t-$cpu_type
1232 if test x"$dwarf2" = xyes
1233 then tm_file="$tm_file tm-dwarf2.h"
1236 # Say what files are being used for the output code and MD file.
1237 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1238 echo "Using \`$srcdir/config/$md_file' as machine description file."
1240 # If any of the xm_file variables contain nonexistent files, warn
1241 # about them and drop them.
1244 for x in $build_xm_file; do
1245 if test -f $srcdir/config/$x
1247 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1253 for x in $host_xm_file; do
1254 if test -f $srcdir/config/$x
1256 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1262 for x in $xm_file; do
1263 if test -f $srcdir/config/$x
1265 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1271 for f in $tm_file; do
1274 if test $count = ax; then
1275 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1277 echo "Using the following target machine macro files:"
1278 for f in $tm_file; do
1279 echo " $srcdir/config/$f"
1283 if test x$need_64bit_hwint = xyes; then
1284 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1285 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1288 if test x$use_long_long_for_widest_fast_int = xyes; then
1289 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1290 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1291 efficiently supported by the host hardware.])
1295 for f in $host_xm_file; do
1298 if test $count = a; then
1300 elif test $count = ax; then
1301 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1303 echo "Using the following host machine macro files:"
1304 for f in $host_xm_file; do
1305 echo " $srcdir/config/$f"
1308 echo "Using ${out_host_hook_obj} for host machine hooks."
1310 if test "$host_xm_file" != "$build_xm_file"; then
1312 for f in $build_xm_file; do
1315 if test $count = a; then
1317 elif test $count = ax; then
1318 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1320 echo "Using the following build machine macro files:"
1321 for f in $build_xm_file; do
1322 echo " $srcdir/config/$f"
1329 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1330 gcc_cv_mcontext_underscores,
1332 #include <sys/cdefs.h>
1333 #include <sys/signal.h>
1334 #include <ucontext.h>
1335 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1337 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1338 if test $gcc_cv_mcontext_underscores = yes; then
1339 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1340 [mcontext_t fields start with __])
1349 # Check if a valid thread package
1350 case ${enable_threads} in
1353 target_thread_file='single'
1357 target_thread_file='single'
1359 aix | dce | gnat | irix | posix | posix95 | rtems | \
1360 single | solaris | vxworks | win32 | mipssde)
1361 target_thread_file=${enable_threads}
1364 echo "${enable_threads} is an unknown thread package" 1>&2
1369 if test x${thread_file} = x; then
1370 # No thread file set by target-specific clauses in config.gcc,
1371 # so use file chosen by default logic above
1372 thread_file=${target_thread_file}
1375 # Make gthr-default.h if we have a thread file.
1377 if test $thread_file != single; then
1378 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1379 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1380 rm -f gthr-default.h-t
1382 mv -f gthr-default.h-t gthr-default.h
1384 gthread_flags=-DHAVE_GTHR_DEFAULT
1386 AC_SUBST(gthread_flags)
1393 if test x$enable___cxa_atexit = xyes || \
1394 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1395 if test x$host = x$target; then
1397 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1398 # keyed to flag_use_cxa_atexit
1403 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1404 [echo "__cxa_atexit can't be enabled on this target"])
1408 # We can't check for __cxa_atexit when building a cross, so assume
1412 if test x$use_cxa_atexit = xyes; then
1413 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1414 [Define if you want to use __cxa_atexit, rather than atexit, to
1415 register C++ destructors for local statics and global objects.
1416 This is essential for fully standards-compliant handling of
1417 destructors, but requires __cxa_atexit in libc.])
1421 # Look for a file containing extra machine modes.
1422 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1423 extra_modes_file='$(srcdir)'/config/${extra_modes}
1424 AC_SUBST(extra_modes_file)
1425 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1426 [Define to the name of a file containing a list of extra machine modes
1427 for this architecture.])
1430 # Convert extra_options into a form suitable for Makefile use.
1432 for f in $extra_options; do
1433 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1435 AC_SUBST(extra_opt_files)
1437 # auto-host.h is the file containing items generated by autoconf and is
1438 # the first file included by config.h.
1439 # If host=build, it is correct to have bconfig include auto-host.h
1440 # as well. If host!=build, we are in error and need to do more
1441 # work to find out the build config parameters.
1442 if test x$host = x$build
1444 build_auto=auto-host.h
1446 # We create a subdir, then run autoconf in the subdir.
1447 # To prevent recursion we set host and build for the new
1448 # invocation of configure to the build for this invocation
1455 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1456 *) realsrcdir=../${srcdir};;
1458 saved_CFLAGS="${CFLAGS}"
1459 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1460 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1461 ${realsrcdir}/configure \
1462 --enable-languages=${enable_languages-all} \
1463 --target=$target_alias --host=$build_alias --build=$build_alias
1464 CFLAGS="${saved_CFLAGS}"
1466 # We just finished tests for the build machine, so rename
1467 # the file auto-build.h in the gcc directory.
1468 mv auto-host.h ../auto-build.h
1471 build_auto=auto-build.h
1473 AC_SUBST(build_subdir)
1475 tm_file="${tm_file} defaults.h"
1476 tm_p_file="${tm_p_file} tm-preds.h"
1477 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1478 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1479 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1480 # put this back in temporarily.
1481 xm_file="auto-host.h ansidecl.h ${xm_file}"
1488 # Compile in configure arguments.
1489 if test -f configargs.h ; then
1490 # Being re-configured.
1491 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1492 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1494 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1497 # Double all backslashes and backslash all quotes to turn
1498 # gcc_config_arguments into a C string.
1499 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1500 $gcc_config_arguments
1502 gcc_config_arguments_str=`cat conftest.out`
1505 cat > configargs.h <<EOF
1506 /* Generated automatically. */
1507 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1508 static const char thread_model[] = "$thread_file";
1510 static const struct {
1511 const char *name, *value;
1512 } configure_default_options[] = $configure_default_options;
1517 gcc_BASEVER=`cat $srcdir/BASE-VER`
1518 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1519 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1520 if test -f $srcdir/REVISION ; then
1521 gcc_REVISION=`cat $srcdir/REVISION`
1525 cat > plugin-version.h <<EOF
1526 #include "configargs.h"
1528 static char basever[] = "$gcc_BASEVER";
1529 static char datestamp[] = "$gcc_DATESTAMP";
1530 static char devphase[] = "$gcc_DEVPHASE";
1531 static char revision[] = "$gcc_REVISION";
1533 /* FIXME plugins: We should make the version information more precise.
1534 One way to do is to add a checksum. */
1536 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1538 configuration_arguments};
1542 # Internationalization
1543 ZW_GNU_GETTEXT_SISTER_DIR
1545 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1546 # -liconv on the link line twice.
1547 case "$LIBINTL" in *$LIBICONV*)
1551 AC_ARG_ENABLE(secureplt,
1552 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1556 [ --enable-cld enable -mcld by default for 32bit x86], [],
1559 # Windows32 Registry support for specifying GCC installation paths.
1560 AC_ARG_ENABLE(win32-registry,
1561 [ --disable-win32-registry
1562 disable lookup of installation paths in the
1563 Registry on Windows hosts
1564 --enable-win32-registry enable registry lookup (default)
1565 --enable-win32-registry=KEY
1566 use KEY instead of GCC version as the last portion
1567 of the registry key],,)
1570 win32 | pe | cygwin* | mingw32* | uwin*)
1571 if test "x$enable_win32_registry" != xno; then
1572 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1575 if test "x$enable_win32_registry" != xno; then
1576 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1577 [Define to 1 if installation paths should be looked up in the Windows
1578 Registry. Ignored on non-Windows hosts.])
1580 if test "x$enable_win32_registry" != xyes \
1581 && test "x$enable_win32_registry" != x; then
1582 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1583 [Define to be the last component of the Windows registry key under which
1584 to look for installation paths. The full key used will be
1585 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1586 The default is the GCC version number.])
1592 # Get an absolute path to the GCC top-level source directory
1593 holddir=`${PWDCMD-pwd}`
1595 topdir=`${PWDCMD-pwd}`
1598 # Conditionalize the makefile for this host machine.
1600 for f in ${host_xmake_file}
1602 if test -f ${srcdir}/config/$f
1604 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1608 # Conditionalize the makefile for this target machine.
1610 for f in ${tmake_file}
1612 if test -f ${srcdir}/config/$f
1614 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1617 tmake_file="${tmake_file_}"
1619 out_object_file=`basename $out_file .c`.o
1621 tm_file_list="options.h"
1622 tm_include_list="options.h"
1623 for f in $tm_file; do
1626 f=`echo $f | sed 's/^..//'`
1627 tm_file_list="${tm_file_list} $f"
1628 tm_include_list="${tm_include_list} $f"
1631 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1632 tm_include_list="${tm_include_list} $f"
1635 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1636 tm_include_list="${tm_include_list} config/$f"
1643 for f in $tm_p_file; do
1646 tm_p_file_list="${tm_p_file_list} $f"
1647 tm_p_include_list="${tm_p_include_list} $f"
1650 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1651 tm_p_include_list="${tm_p_include_list} config/$f"
1657 for f in $xm_file; do
1660 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1661 xm_include_list="${xm_include_list} $f"
1664 xm_file_list="${xm_file_list} $f"
1665 xm_include_list="${xm_include_list} $f"
1668 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1669 xm_include_list="${xm_include_list} config/$f"
1675 host_xm_include_list=
1676 for f in $host_xm_file; do
1679 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1680 host_xm_include_list="${host_xm_include_list} $f"
1683 host_xm_file_list="${host_xm_file_list} $f"
1684 host_xm_include_list="${host_xm_include_list} $f"
1687 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1688 host_xm_include_list="${host_xm_include_list} config/$f"
1694 for f in $build_xm_file; do
1697 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1698 build_xm_include_list="${build_xm_include_list} $f"
1700 auto-build.h | auto-host.h )
1701 build_xm_file_list="${build_xm_file_list} $f"
1702 build_xm_include_list="${build_xm_include_list} $f"
1705 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1706 build_xm_include_list="${build_xm_include_list} config/$f"
1711 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1712 # cross-compiler which does not use the native headers and libraries.
1713 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1714 CROSS= AC_SUBST(CROSS)
1715 ALL=all.internal AC_SUBST(ALL)
1716 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1718 if test "x$with_build_sysroot" != x; then
1719 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1721 # This value is used, even on a native system, because
1722 # CROSS_SYSTEM_HEADER_DIR is just
1723 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1724 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1727 if test x$host != x$target
1729 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1731 SYSTEM_HEADER_DIR=$build_system_header_dir
1732 case "$host","$target" in
1733 # Darwin crosses can use the host system's libraries and headers,
1734 # because of the fat library support. Of course, it must be the
1735 # same version of Darwin on both sides. Allow the user to
1736 # just say --target=foo-darwin without a version number to mean
1737 # "the version on this system".
1738 *-*-darwin*,*-*-darwin*)
1739 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1740 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1741 if test $hostos = $targetos -o $targetos = darwin ; then
1743 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1748 i?86-*-*,x86_64-*-* \
1749 | powerpc*-*-*,powerpc64*-*-*)
1750 CROSS="$CROSS -DNATIVE_CROSS" ;;
1752 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1753 SYSTEM_HEADER_DIR=$build_system_header_dir
1756 # If this is a cross-compiler that does not
1757 # have its own set of headers then define
1760 # If this is using newlib, without having the headers available now,
1761 # then define inhibit_libc in LIBGCC2_CFLAGS.
1762 # This prevents libgcc2 from containing any code which requires libc
1764 : ${inhibit_libc=false}
1765 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1766 test x$with_newlib = xyes ; } &&
1767 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1770 AC_SUBST(inhibit_libc)
1772 # When building gcc with a cross-compiler, we need to adjust things so
1773 # that the generator programs are still built with the native compiler.
1774 # Also, we cannot run fixincludes.
1776 # These are the normal (build=host) settings:
1777 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1778 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1779 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1780 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1782 # And these apply if build != host, or we are generating coverage data
1783 if test x$build != x$host || test "x$coverage_flags" != x
1785 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1786 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1789 # Expand extra_headers to include complete path.
1790 # This substitutes for lots of t-* files.
1792 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1793 for file in ${extra_headers} ; do
1794 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1797 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1798 if test x"$use_gcc_tgmath" = xyes
1799 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1802 # Define collect2 in Makefile.
1803 case $host_can_use_collect2 in
1805 *) collect2='collect2$(exeext)' ;;
1807 AC_SUBST([collect2])
1809 # Add a definition of USE_COLLECT2 if system wants one.
1810 case $use_collect2 in
1811 no) use_collect2= ;;
1814 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1815 xm_defines="${xm_defines} USE_COLLECT2"
1816 case $host_can_use_collect2 in
1818 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1824 # ---------------------------
1825 # Assembler & linker features
1826 # ---------------------------
1828 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1829 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1830 # However when ld-new is first executed from the build tree, libtool will
1831 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1832 # to the build tree. While doing this we need to use the previous-stage
1833 # linker, or we have an infinite loop. The presence of a shell script as
1834 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1835 # the gcc/collect-ld script. So we need to know how libtool works, or
1836 # exec-tool will fail.
1838 m4_defun([_LT_CONFIG_COMMANDS], [])
1841 AC_SUBST(enable_fast_install)
1843 # Identify the assembler which will work hand-in-glove with the newly
1844 # built GCC, so that we can examine its features. This is the assembler
1845 # which will be driven by the driver program.
1847 # If build != host, and we aren't building gas in-tree, we identify a
1848 # build->target assembler and hope that it will have the same features
1849 # as the host->target assembler we'll be using.
1850 gcc_cv_gas_major_version=
1851 gcc_cv_gas_minor_version=
1852 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1854 m4_pattern_allow([AS_FOR_TARGET])dnl
1855 AS_VAR_SET_IF(gcc_cv_as,, [
1856 if test -x "$DEFAULT_ASSEMBLER"; then
1857 gcc_cv_as="$DEFAULT_ASSEMBLER"
1858 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1859 && test -f ../gas/Makefile \
1860 && test x$build = x$host; then
1861 gcc_cv_as=../gas/as-new$build_exeext
1862 elif test -x as$build_exeext; then
1863 # Build using assembler in the current directory.
1864 gcc_cv_as=./as$build_exeext
1865 elif test -x $AS_FOR_TARGET; then
1866 gcc_cv_as="$AS_FOR_TARGET"
1868 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1871 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1872 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1873 case "$ORIGINAL_AS_FOR_TARGET" in
1874 ./as | ./as$build_exeext) ;;
1875 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1878 AC_MSG_CHECKING(what assembler to use)
1879 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1880 # Single tree build which includes gas. We want to prefer it
1881 # over whatever linker top-level may have detected, since
1882 # we'll use what we're building after installation anyway.
1883 AC_MSG_RESULT(newly built gas)
1885 _gcc_COMPUTE_GAS_VERSION
1886 in_tree_gas_is_elf=no
1887 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1888 || (grep 'obj_format = multi' ../gas/Makefile \
1889 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1891 in_tree_gas_is_elf=yes
1894 AC_MSG_RESULT($gcc_cv_as)
1898 # Identify the linker which will work hand-in-glove with the newly
1899 # built GCC, so that we can examine its features. This is the linker
1900 # which will be driven by the driver program.
1902 # If build != host, and we aren't building gas in-tree, we identify a
1903 # build->target linker and hope that it will have the same features
1904 # as the host->target linker we'll be using.
1905 gcc_cv_gld_major_version=
1906 gcc_cv_gld_minor_version=
1907 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1908 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1910 AS_VAR_SET_IF(gcc_cv_ld,, [
1911 if test -x "$DEFAULT_LINKER"; then
1912 gcc_cv_ld="$DEFAULT_LINKER"
1913 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1914 && test -f ../ld/Makefile \
1915 && test x$build = x$host; then
1916 gcc_cv_ld=../ld/ld-new$build_exeext
1917 elif test -x collect-ld$build_exeext; then
1918 # Build using linker in the current directory.
1919 gcc_cv_ld=./collect-ld$build_exeext
1920 elif test -x $LD_FOR_TARGET; then
1921 gcc_cv_ld="$LD_FOR_TARGET"
1923 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1926 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1927 PLUGIN_LD=`basename $gcc_cv_ld`
1928 AC_ARG_WITH(plugin-ld,
1929 [ --with-plugin-ld=[[ARG]] specify the plugin linker],
1930 [if test x"$withval" != x; then
1931 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1932 PLUGIN_LD="$withval"
1934 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1935 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1937 # Check to see if we are using gold instead of ld
1938 AC_MSG_CHECKING(whether we are using gold)
1940 if test x$gcc_cv_ld != x; then
1941 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
1942 | grep "GNU gold" > /dev/null; then
1946 AC_MSG_RESULT($ld_is_gold)
1948 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1949 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1950 case "$ORIGINAL_LD_FOR_TARGET" in
1951 ./collect-ld | ./collect-ld$build_exeext) ;;
1952 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1955 AC_MSG_CHECKING(what linker to use)
1956 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1957 # Single tree build which includes ld. We want to prefer it
1958 # over whatever linker top-level may have detected, since
1959 # we'll use what we're building after installation anyway.
1960 AC_MSG_RESULT(newly built ld)
1962 in_tree_ld_is_elf=no
1963 if (grep 'EMUL = .*elf' ../ld/Makefile \
1964 || grep 'EMUL = .*linux' ../ld/Makefile \
1965 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1966 in_tree_ld_is_elf=yes
1968 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
1971 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1972 if test x$gcc_cv_gld_version != x; then
1976 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1977 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1980 AC_MSG_RESULT($gcc_cv_ld)
1984 # Figure out what nm we will be using.
1985 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1986 AS_VAR_SET_IF(gcc_cv_nm,, [
1987 if test -f $gcc_cv_binutils_srcdir/configure.in \
1988 && test -f ../binutils/Makefile \
1989 && test x$build = x$host; then
1990 gcc_cv_nm=../binutils/nm-new$build_exeext
1991 elif test -x nm$build_exeext; then
1992 gcc_cv_nm=./nm$build_exeext
1993 elif test -x $NM_FOR_TARGET; then
1994 gcc_cv_nm="$NM_FOR_TARGET"
1996 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1999 AC_MSG_CHECKING(what nm to use)
2000 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2001 # Single tree build which includes binutils.
2002 AC_MSG_RESULT(newly built nm)
2005 AC_MSG_RESULT($gcc_cv_nm)
2009 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2010 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2011 case "$ORIGINAL_NM_FOR_TARGET" in
2012 ./nm | ./nm$build_exeext) ;;
2013 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2017 # Figure out what objdump we will be using.
2018 AS_VAR_SET_IF(gcc_cv_objdump,, [
2019 if test -f $gcc_cv_binutils_srcdir/configure.in \
2020 && test -f ../binutils/Makefile \
2021 && test x$build = x$host; then
2022 # Single tree build which includes binutils.
2023 gcc_cv_objdump=../binutils/objdump$build_exeext
2024 elif test -x objdump$build_exeext; then
2025 gcc_cv_objdump=./objdump$build_exeext
2026 elif test -x $OBJDUMP_FOR_TARGET; then
2027 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2029 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2032 AC_MSG_CHECKING(what objdump to use)
2033 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2034 # Single tree build which includes binutils.
2035 AC_MSG_RESULT(newly built objdump)
2036 elif test x$gcc_cv_objdump = x; then
2037 AC_MSG_RESULT(not found)
2039 AC_MSG_RESULT($gcc_cv_objdump)
2042 # Figure out what readelf we will be using.
2043 AS_VAR_SET_IF(gcc_cv_readelf,, [
2044 if test -f $gcc_cv_binutils_srcdir/configure.in \
2045 && test -f ../binutils/Makefile \
2046 && test x$build = x$host; then
2047 # Single tree build which includes binutils.
2048 gcc_cv_readelf=../binutils/readelf$build_exeext
2049 elif test -x readelf$build_exeext; then
2050 gcc_cv_readelf=./readelf$build_exeext
2052 AC_PATH_PROG(gcc_cv_readelf, readelf)
2055 AC_MSG_CHECKING(what readelf to use)
2056 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2057 # Single tree build which includes binutils.
2058 AC_MSG_RESULT(newly built readelf)
2059 elif test x$gcc_cv_readelf = x; then
2060 AC_MSG_RESULT(not found)
2062 AC_MSG_RESULT($gcc_cv_readelf)
2065 # Figure out what assembler alignment features are present.
2066 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2070 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2071 [Define if your assembler supports .balign and .p2align.])])
2073 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2076 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2077 [Define if your assembler supports specifying the maximum number
2078 of bytes to skip when using the GAS .p2align command.])])
2080 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2083 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2084 [Define if your assembler supports .literal16.])])
2086 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2088 [conftest_label1: .word 0
2090 conftest_label2: .word 0
2092 [if test x$gcc_cv_nm != x; then
2093 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2094 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2095 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2097 else gcc_cv_as_subsection_m1=yes
2099 rm -f conftest.nm1 conftest.nm2
2101 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2102 [Define if your assembler supports .subsection and .subsection -1 starts
2103 emitting at the beginning of your section.])])
2105 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2108 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2110 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2112 [ .weakref foobar, barfnot],,
2113 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2115 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2118 .NSUBSPA $CODE$,COMDAT],,
2119 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2121 # .hidden needs to be supported in both the assembler and the linker,
2122 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2123 # This is irritatingly difficult to feature test for; we have to check the
2124 # date string after the version number. If we've got an in-tree
2125 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2127 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2128 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2134 if test $in_tree_ld != yes ; then
2135 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2136 if test x"$ld_is_gold" = xyes; then
2137 gcc_cv_ld_hidden=yes
2138 elif echo "$ld_ver" | grep GNU > /dev/null; then
2139 ld_vers=`echo $ld_ver | sed -n \
2140 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2141 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2142 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2143 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2144 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2149 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2150 [[if test $in_tree_ld = yes ; then
2152 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2153 && test $in_tree_ld_is_elf = yes; then
2154 gcc_cv_ld_hidden=yes
2157 gcc_cv_ld_hidden=yes
2158 if echo "$ld_ver" | grep GNU > /dev/null; then
2159 if test 0"$ld_date" -lt 20020404; then
2160 if test -n "$ld_date"; then
2161 # If there was date string, but was earlier than 2002-04-04, fail
2163 elif test -z "$ld_vers"; then
2164 # If there was no date string nor ld version number, something is wrong
2167 test -z "$ld_vers_patch" && ld_vers_patch=0
2168 if test "$ld_vers_major" -lt 2; then
2170 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2171 gcc_cv_ld_hidden="no"
2172 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2179 hppa64*-*-hpux* | ia64*-*-hpux*)
2180 gcc_cv_ld_hidden=yes
2182 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2183 gcc_cv_ld_hidden=yes
2191 libgcc_visibility=no
2192 AC_SUBST(libgcc_visibility)
2193 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2194 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2195 libgcc_visibility=yes
2196 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2197 [Define if your assembler and linker support .hidden.])
2200 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2201 gcc_cv_ld_ro_rw_mix=unknown
2202 if test $in_tree_ld = yes ; then
2203 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2204 && test $in_tree_ld_is_elf = yes; then
2205 gcc_cv_ld_ro_rw_mix=read-write
2207 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2208 echo '.section myfoosect, "a"' > conftest1.s
2209 echo '.section myfoosect, "aw"' > conftest2.s
2210 echo '.byte 1' >> conftest2.s
2211 echo '.section myfoosect, "a"' > conftest3.s
2212 echo '.byte 0' >> conftest3.s
2213 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2214 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2215 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2216 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2217 conftest2.o conftest3.o > /dev/null 2>&1; then
2218 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2219 | sed -e '/myfoosect/!d' -e N`
2220 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2221 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2222 gcc_cv_ld_ro_rw_mix=read-only
2224 gcc_cv_ld_ro_rw_mix=read-write
2229 rm -f conftest.* conftest[123].*
2232 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2233 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2234 [Define if your linker links a mix of read-only
2235 and read-write sections into a read-write section.])
2237 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2239 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2240 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2248 [[# GAS versions before 2.11 do not support uleb128,
2249 # despite appearing to.
2250 # ??? There exists an elf-specific test that will crash
2251 # the assembler. Perhaps it's better to figure out whether
2252 # arbitrary sections are supported and try the test.
2253 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2254 if echo "$as_ver" | grep GNU > /dev/null; then
2255 as_vers=`echo $as_ver | sed -n \
2256 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2257 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2258 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2259 if test $as_major -eq 2 && test $as_minor -lt 11
2261 else gcc_cv_as_leb128=yes
2264 [AC_DEFINE(HAVE_AS_LEB128, 1,
2265 [Define if your assembler supports .sleb128 and .uleb128.])])
2267 # Check if we have assembler support for unwind directives.
2268 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2275 .cfi_escape 1, 2, 3, 4, 5
2279 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2280 # read-only and read-write sections, we need to make sure that the
2281 # assembler used emits read-write .eh_frame sections.
2282 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2283 if test "x$gcc_cv_objdump" != x; then
2284 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2285 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2286 gcc_cv_as_cfi_directive=no
2289 i?86-*-solaris2.1[[0-9]]*)
2290 # On Solaris/x86, make sure that GCC and gas agree on using
2291 # read-only .eh_frame sections for 64-bit.
2292 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2293 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2294 sed -e /.eh_frame/!d -e N | \
2295 grep READONLY > /dev/null; then
2296 gcc_cv_as_cfi_directive=yes
2298 gcc_cv_as_cfi_directive=no
2302 gcc_cv_as_cfi_directive=yes
2307 # no objdump, err on the side of caution
2308 gcc_cv_as_cfi_directive=no
2311 gcc_cv_as_cfi_directive=yes
2315 gcc_cv_as_cfi_directive=yes
2318 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_readelf != x; then
2319 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2323 .cfi_adjust_cfa_offset 64
2325 .cfi_adjust_cfa_offset 128
2328 if $gcc_cv_readelf -wf conftest.o 2>/dev/null \
2329 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2330 gcc_cv_as_cfi_advance_working=yes
2334 # no readelf, err on the side of caution
2335 gcc_cv_as_cfi_advance_working=no
2337 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2338 [`if test $gcc_cv_as_cfi_directive = yes \
2339 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2340 [Define 0/1 if your assembler supports CFI directives.])
2342 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2343 gcc_cv_as_cfi_personality_directive, ,,
2346 .cfi_personality 0, symbol
2348 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2349 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2350 then echo 1; else echo 0; fi`],
2351 [Define 0/1 if your assembler supports .cfi_personality.])
2353 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2354 gcc_cv_as_cfi_sections_directive, ,,
2356 .cfi_sections .debug_frame, .eh_frame
2359 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2360 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2361 then echo 1; else echo 0; fi`],
2362 [Define 0/1 if your assembler supports .cfi_sections.])
2364 # GAS versions up to and including 2.11.0 may mis-optimize
2366 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2374 .section .eh_frame,"aw",@progbits
2376 .4byte .LECIE1-.LSCIE1
2390 .4byte .LEFDE1-.LASFDE1
2392 .4byte .LASFDE1-__FRAME_BEGIN__
2400 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2401 cat > conftest.lit <<EOF
2402 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2403 0010 01000000 12000000 18000000 00000000 ................
2404 0020 08000000 04080000 0044 .........D @&t@
2406 cat > conftest.big <<EOF
2407 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2408 0010 00000001 00000012 00000018 00000000 ................
2409 0020 00000008 04000000 0844 .........D @&t@
2411 # If the assembler didn't choke, and we can objdump,
2412 # and we got the correct data, then succeed.
2413 # The text in the here-document typically retains its unix-style line
2414 # endings, while the output of objdump will use host line endings.
2415 # Therefore, use diff -b for the comparisons.
2416 if test x$gcc_cv_objdump != x \
2417 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2418 | tail -3 > conftest.got \
2419 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2420 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2422 gcc_cv_as_eh_frame=yes
2423 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2424 gcc_cv_as_eh_frame=buggy
2426 # Uh oh, what do we do now?
2427 gcc_cv_as_eh_frame=no
2430 if test $gcc_cv_as_eh_frame = buggy; then
2431 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2432 [Define if your assembler mis-optimizes .eh_frame data.])
2435 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2436 [elf,2,12,0], [--fatal-warnings],
2437 [.section .rodata.str, "aMS", @progbits, 1])
2438 if test $gcc_cv_as_shf_merge = no; then
2439 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2440 [elf,2,12,0], [--fatal-warnings],
2441 [.section .rodata.str, "aMS", %progbits, 1])
2443 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2444 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2445 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2447 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2448 [elf,2,16,0], [--fatal-warnings],
2449 [.section .text,"axG",@progbits,.foo,comdat])
2450 if test $gcc_cv_as_comdat_group = yes; then
2451 gcc_cv_as_comdat_group_percent=no
2453 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2454 [elf,2,16,0], [--fatal-warnings],
2455 [.section .text,"axG",%progbits,.foo,comdat])
2457 if test x"$ld_is_gold" = xyes; then
2459 elif test $in_tree_ld = yes ; then
2461 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2462 && test $in_tree_ld_is_elf = yes; then
2465 elif test x"$ld_vers" != x; then
2467 if test 0"$ld_date" -lt 20050308; then
2468 if test -n "$ld_date"; then
2469 # If there was date string, but was earlier than 2005-03-08, fail
2471 elif test "$ld_vers_major" -lt 2; then
2473 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2478 # assume linkers other than GNU ld don't support COMDAT group
2481 if test $comdat_group = no; then
2482 gcc_cv_as_comdat_group=no
2483 gcc_cv_as_comdat_group_percent=no
2485 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2486 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2487 [Define 0/1 if your assembler and linker support COMDAT groups.])
2489 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2490 gcc_cv_as_discriminator,
2494 .loc 1 1 0 discriminator 1],,
2495 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2496 [Define if your assembler supports the .loc discriminator sub-directive.])])
2498 # Thread-local storage - the check is heavily parameterized.
2507 .section ".tdata","awT",@progbits
2510 ldq $27,__tls_get_addr($29) !literal!1
2511 lda $16,foo($29) !tlsgd!1
2512 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2513 ldq $27,__tls_get_addr($29) !literal!2
2514 lda $16,foo($29) !tlsldm!2
2515 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2516 ldq $1,foo($29) !gotdtprel
2517 ldah $2,foo($29) !dtprelhi
2518 lda $3,foo($2) !dtprello
2519 lda $4,foo($29) !dtprel
2520 ldq $1,foo($29) !gottprel
2521 ldah $2,foo($29) !tprelhi
2522 lda $3,foo($2) !tprello
2523 lda $4,foo($29) !tprel'
2526 tls_as_opt=--fatal-warnings
2528 cris-*-*|crisv32-*-*)
2530 .section ".tdata","awT",@progbits
2537 tls_as_opt=--fatal-warnings
2541 .section ".tdata","awT",@progbits
2553 .section ".tdata","awT",@progbits
2557 addil LT%foo-$tls_gdidx$,gp
2558 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2561 addil LT%foo-$tls_ldidx$,gp
2563 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2564 addil LR%foo-$tls_dtpoff$,%ret0
2565 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2567 addil LT%foo-$tls_ieoff$,gp
2568 ldw RT%foo-$tls_ieoff$(%r1),%t2
2571 addil LR%foo-$tls_leoff$,%t1
2572 ldo RR%foo-$tls_leoff$(%r1),%t2'
2575 tls_as_opt=--fatal-warnings
2579 .section ".tdata","awT",%progbits
2592 i[34567]86-*-solaris2.[56789]*)
2593 # TLS was introduced in the Solaris 9 4/04 release but
2594 # we do not enable it by default on Solaris 9 either.
2595 if test "x$enable_tls" = xyes ; then
2601 i[34567]86-*-solaris2.*)
2608 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2610 .section .tdata,"awt",@progbits'
2614 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2615 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2619 .section ".tdata","awT",@progbits'
2622 tls_as_opt="--fatal-warnings"
2624 conftest_s="$conftest_s
2628 leal foo@tlsgd(,%ebx,1), %eax
2629 leal foo@tlsldm(%ebx), %eax
2630 leal foo@dtpoff(%eax), %edx
2631 movl foo@gottpoff(%ebx), %eax
2632 subl foo@gottpoff(%ebx), %eax
2633 addl foo@gotntpoff(%ebx), %eax
2634 movl foo@indntpoff, %eax
2635 movl \$foo@tpoff, %eax
2636 subl \$foo@tpoff, %eax
2637 leal foo@ntpoff(%ecx), %eax"
2641 .section ".tdata","awT",@progbits
2645 leaq foo@TLSGD(%rip), %rdi
2646 leaq foo@TLSLD(%rip), %rdi
2647 leaq foo@DTPOFF(%rax), %rdx
2648 movq foo@GOTTPOFF(%rip), %rax
2649 movq $foo@TPOFF, %rax'
2652 tls_as_opt=--fatal-warnings
2656 .section ".tdata","awT",@progbits
2659 addl r16 = @ltoff(@dtpmod(foo#)), gp
2660 addl r17 = @ltoff(@dtprel(foo#)), gp
2661 addl r18 = @ltoff(@tprel(foo#)), gp
2662 addl r19 = @dtprel(foo#), gp
2663 adds r21 = @dtprel(foo#), r13
2664 movl r23 = @dtprel(foo#)
2665 addl r20 = @tprel(foo#), gp
2666 adds r22 = @tprel(foo#), r13
2667 movl r24 = @tprel(foo#)'
2670 tls_as_opt=--fatal-warnings
2674 .section .tdata,"awT",@progbits
2678 addiu $4, $28, %tlsgd(x)
2679 addiu $4, $28, %tlsldm(x)
2680 lui $4, %dtprel_hi(x)
2681 addiu $4, $4, %dtprel_lo(x)
2682 lw $4, %gottprel(x)($28)
2683 lui $4, %tprel_hi(x)
2684 addiu $4, $4, %tprel_lo(x)'
2687 tls_as_opt='-32 --fatal-warnings'
2691 .section .tdata,"awT",@progbits
2696 move.l x@TLSGD(%a5),%a0
2697 move.l x@TLSLDM(%a5),%a0
2698 move.l x@TLSLDO(%a5),%a0
2699 move.l x@TLSIE(%a5),%a0
2700 move.l x@TLSLE(%a5),%a0'
2703 tls_as_opt='--fatal-warnings'
2707 .section ".tdata","awT",@progbits
2715 addi 3,31,ld0@got@tlsgd
2717 addi 3,31,x1@got@tlsld
2720 addis 9,3,x2@dtprel@ha
2721 addi 9,9,x2@dtprel@l
2722 lwz 9,x3@got@tprel(31)
2725 addis 9,2,x2@tprel@ha
2726 addi 9,9,x2@tprel@l'
2729 tls_as_opt="-a32 --fatal-warnings"
2733 .section ".tdata","awT",@progbits
2741 addi 3,2,ld0@got@tlsgd
2747 addi 3,2,x1@got@tlsld
2753 addis 9,3,x2@dtprel@ha
2754 addi 9,9,x2@dtprel@l
2757 ld 9,x3@got@dtprel(2)
2763 tls_as_opt="-a64 --fatal-warnings"
2767 .section ".tdata","awT",@progbits
2776 l %r1,foo@GOTNTPOFF(%r12)
2777 l %r1,0(%r1):tls_load:foo
2778 bas %r14,0(%r1,%r13):tls_gdcall:foo
2779 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2782 tls_as_opt="-m31 --fatal-warnings"
2786 .section ".tdata","awT",@progbits
2794 lg %r1,foo@GOTNTPOFF(%r12)
2795 larl %r1,foo@INDNTPOFF
2796 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2797 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2800 tls_as_opt="-m64 -Aesame --fatal-warnings"
2802 sh-*-* | sh[34]-*-*)
2804 .section ".tdata","awT",@progbits
2814 tls_as_opt=--fatal-warnings
2818 sparc*-sun-solaris2.[56789]*)
2819 # TLS was introduced in the Solaris 9 4/04 release but
2820 # we do not enable it by default on Solaris 9 either.
2821 if test "x$enable_tls" = xyes ; then
2827 sparc*-sun-solaris2.*)
2834 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2836 .section ".tdata",#alloc,#write,#tls
2839 sethi %tgd_hi22(foo), %o0
2840 add %o0, %tgd_lo10(foo), %o1
2841 add %l7, %o1, %o0, %tgd_add(foo)
2842 call __tls_get_addr, %tgd_call(foo)
2843 sethi %tldm_hi22(foo), %l1
2844 add %l1, %tldm_lo10(foo), %l2
2845 add %l7, %l2, %o0, %tldm_add(foo)
2846 call __tls_get_addr, %tldm_call(foo)
2847 sethi %tldo_hix22(foo), %l3
2848 xor %l3, %tldo_lox10(foo), %l4
2849 add %o0, %l4, %l5, %tldo_add(foo)
2850 sethi %tie_hi22(foo), %o3
2851 add %o3, %tie_lo10(foo), %o3
2852 ld [%l7 + %o3], %o2, %tie_ld(foo)
2853 add %g7, %o2, %o4, %tie_add(foo)
2854 sethi %tle_hix22(foo), %l1
2855 xor %l1, %tle_lox10(foo), %o5
2856 ld [%g7 + %o5], %o1'
2861 .section ".tdata","awT",@progbits
2864 sethi %tgd_hi22(foo), %o0
2865 add %o0, %tgd_lo10(foo), %o1
2866 add %l7, %o1, %o0, %tgd_add(foo)
2867 call __tls_get_addr, %tgd_call(foo)
2868 sethi %tldm_hi22(foo), %l1
2869 add %l1, %tldm_lo10(foo), %l2
2870 add %l7, %l2, %o0, %tldm_add(foo)
2871 call __tls_get_addr, %tldm_call(foo)
2872 sethi %tldo_hix22(foo), %l3
2873 xor %l3, %tldo_lox10(foo), %l4
2874 add %o0, %l4, %l5, %tldo_add(foo)
2875 sethi %tie_hi22(foo), %o3
2876 add %o3, %tie_lo10(foo), %o3
2877 ld [%l7 + %o3], %o2, %tie_ld(foo)
2878 add %g7, %o2, %o4, %tie_add(foo)
2879 sethi %tle_hix22(foo), %l1
2880 xor %l1, %tle_lox10(foo), %o5
2881 ld [%g7 + %o5], %o1'
2884 tls_as_opt="-32 --fatal-warnings"
2889 .section ".tdata","awT",@progbits
2892 movi a8, foo@TLSFUNC
2893 movi a10, foo@TLSARG
2894 callx8.tls a8, foo@TLSCALL'
2901 if test "x$enable_tls" = xno ; then
2902 : # TLS explicitly disabled.
2903 elif test "x$enable_tls" = xyes ; then
2904 set_have_as_tls=yes # TLS explicitly enabled.
2905 elif test -z "$tls_first_major"; then
2906 : # If we don't have a check, assume no support.
2908 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2909 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2910 [set_have_as_tls=yes])
2912 if test $set_have_as_tls = yes ; then
2913 AC_DEFINE(HAVE_AS_TLS, 1,
2914 [Define if your assembler supports thread-local storage.])
2917 # Target-specific assembler checks.
2919 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2920 gcc_cv_ld_static_dynamic=no
2921 if test $in_tree_ld = yes ; then
2922 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
2923 gcc_cv_ld_static_dynamic=yes
2925 elif test x$gcc_cv_ld != x; then
2926 # Check if linker supports -Bstatic/-Bdynamic option
2927 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2928 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2929 gcc_cv_ld_static_dynamic=yes
2932 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2933 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2934 [Define if your linker supports -Bstatic/-Bdynamic option.])
2936 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2938 if test x"$demangler_in_ld" = xyes; then
2939 AC_MSG_CHECKING(linker --demangle support)
2940 gcc_cv_ld_demangle=no
2941 if test $in_tree_ld = yes; then
2942 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2943 gcc_cv_ld_demangle=yes
2945 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2946 # Check if the GNU linker supports --demangle option
2947 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2948 gcc_cv_ld_demangle=yes
2951 if test x"$gcc_cv_ld_demangle" = xyes; then
2952 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2953 [Define if your linker supports --demangle option.])
2955 AC_MSG_RESULT($gcc_cv_ld_demangle)
2959 # All TARGET_ABI_OSF targets.
2960 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2961 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2962 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2965 extbl $3, $2, $3 !lituse_bytoff!1
2966 ldq $2, a($29) !literal!1
2967 ldq $4, b($29) !literal!2
2968 ldq_u $3, 0($2) !lituse_base!1
2969 ldq $27, f($29) !literal!5
2970 jsr $26, ($27), f !lituse_jsr!5
2971 ldah $29, 0($26) !gpdisp!3
2972 lda $0, c($29) !gprel
2973 ldah $1, d($29) !gprelhigh
2974 lda $1, d($1) !gprellow
2975 lda $29, 0($29) !gpdisp!3],,
2976 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2977 [Define if your assembler supports explicit relocations.])])
2978 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2979 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2982 ldq $27, a($29) !literal!1
2983 jsr $26, ($27), a !lituse_jsrdirect!1],,
2984 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2985 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2989 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2990 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2991 [-no-mul-bug-abort], [.text],,
2992 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2993 [Define if your assembler supports the -no-mul-bug-abort option.])])
2997 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2998 [.register %g2, #scratch],,
2999 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3000 [Define if your assembler supports .register.])])
3002 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3004 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3005 [Define if your assembler supports -relax option.])])
3007 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3008 gcc_cv_as_sparc_gotdata_op,,
3014 sethi %gdop_hix22(foo), %g1
3015 xor %g1, %gdop_lox10(foo), %g1
3016 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3017 [if test x$gcc_cv_ld != x \
3018 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3019 if $gcc_cv_ld -v | grep GNU >/dev/null 2>&1; then
3020 if test x$gcc_cv_objdump != x; then
3021 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3022 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3023 gcc_cv_as_sparc_gotdata_op=no
3025 gcc_cv_as_sparc_gotdata_op=yes
3029 gcc_cv_as_sparc_gotdata_op=yes
3033 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3034 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3036 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3037 gcc_cv_as_sparc_ua_pcrel,,
3045 .uaword %r_disp32(foo)],
3046 [if test x$gcc_cv_ld != x \
3047 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3048 gcc_cv_as_sparc_ua_pcrel=yes
3051 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3052 [Define if your assembler and linker support unaligned PC relative relocs.])
3054 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3055 gcc_cv_as_sparc_ua_pcrel_hidden,,
3060 .uaword %r_disp32(foo)
3061 .byte 0x32, 0x33, 0x34
3066 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3067 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3068 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3069 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3070 if $gcc_cv_objdump -R conftest 2> /dev/null \
3071 | grep 'DISP32' > /dev/null 2>&1; then
3074 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3078 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3079 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3080 ]) # unaligned pcrel relocs
3082 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3083 gcc_cv_as_sparc_offsetable_lo10,,
3086 or %g1, %lo(ab) + 12, %g1
3087 or %g1, %lo(ab + 12), %g1],
3088 [if test x$gcc_cv_objdump != x \
3089 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3090 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3091 gcc_cv_as_sparc_offsetable_lo10=yes
3093 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3094 [Define if your assembler supports offsetable %lo().])])
3098 i[34567]86-*-* | x86_64-*-*)
3102 # Full C++ conformance when using a shared libstdc++-v3 requires some
3103 # support from the Cygwin DLL, which in more recent versions exports
3104 # wrappers to aid in interposing and redirecting operators new, delete,
3105 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3106 # are configuring for a version of Cygwin that exports the wrappers.
3107 if test x$host = x$target; then
3108 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3110 # Can't check presence of libc functions during cross-compile, so
3111 # we just have to assume we're building for an up-to-date target.
3112 gcc_ac_cygwin_dll_wrappers=yes
3114 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3115 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3116 [Define if you want to generate code by default that assumes that the
3117 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3120 cygwin* | pe | mingw32*)
3121 # Recent binutils allows the three-operand form of ".comm" on PE. This
3122 # definition is used unconditionally to initialise the default state of
3123 # the target option variable that governs usage of the feature.
3124 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3125 [2,19,52],,[.comm foo,1,32])
3126 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3127 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3128 [Define if your assembler supports specifying the alignment
3129 of objects allocated using the GAS .comm command.])
3130 # Used for DWARF 2 in PE
3131 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3132 gcc_cv_as_ix86_pe_secrel32,
3138 [if test x$gcc_cv_ld != x \
3139 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3140 gcc_cv_as_ix86_pe_secrel32=yes
3143 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3144 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3148 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3149 gcc_cv_as_ix86_filds,,,
3150 [filds mem; fists mem],,
3151 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3152 [Define if your assembler uses filds and fists mnemonics.])])
3154 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3155 gcc_cv_as_ix86_fildq,,,
3156 [fildq mem; fistpq mem],,
3157 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3158 [Define if your assembler uses fildq and fistq mnemonics.])])
3160 gcc_GAS_CHECK_FEATURE([cmov syntax],
3161 gcc_cv_as_ix86_cmov_sun_syntax,,,
3162 [cmovl.l %edx, %eax],,
3163 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3164 [Define if your assembler supports the Sun syntax for cmov.])])
3166 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3167 gcc_cv_as_ix86_ffreep,,,
3169 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3170 [Define if your assembler supports the ffreep mnemonic.])])
3172 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3173 gcc_cv_as_ix86_sahf,,,
3175 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3176 [Define if your assembler supports the sahf mnemonic.])])
3178 gcc_GAS_CHECK_FEATURE([swap suffix],
3179 gcc_cv_as_ix86_swap,,,
3180 [movl.s %esp, %ebp],,
3181 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3182 [Define if your assembler supports the swap suffix.])])
3184 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3185 gcc_cv_as_ix86_diff_sect_delta,,,
3193 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3194 [Define if your assembler supports the subtraction of symbols in different sections.])])
3196 # This one is used unconditionally by i386.[ch]; it is to be defined
3197 # to 1 if the feature is present, 0 otherwise.
3198 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3199 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3205 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3206 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3207 [Define true if the assembler supports '.long foo@GOTOFF'.])
3211 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3212 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3214 addl r15 = @ltoffx(x#), gp
3216 ld8.mov r16 = [[r15]], x#],,
3217 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3218 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3224 *-*-aix*) conftest_s=' .machine "pwr5"
3228 gcc_GAS_CHECK_FEATURE([.machine directive support],
3229 gcc_cv_as_machine_directive,,,
3230 [ .machine ppc7400])
3231 if test x$gcc_cv_as_machine_directive != xyes; then
3232 echo "*** This target requires an assembler supporting \".machine\"" >&2
3233 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3234 test x$build = x$target && exit 1
3238 *) conftest_s=' .machine power4
3243 gcc_GAS_CHECK_FEATURE([mfcr field support],
3244 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3246 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3247 [Define if your assembler supports mfcr field.])])
3250 *-*-aix*) conftest_s=' .machine "pwr5"
3253 *) conftest_s=' .machine power5
3258 gcc_GAS_CHECK_FEATURE([popcntb support],
3259 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3261 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3262 [Define if your assembler supports popcntb field.])])
3265 *-*-aix*) conftest_s=' .machine "pwr5x"
3268 *) conftest_s=' .machine power5
3273 gcc_GAS_CHECK_FEATURE([fp round support],
3274 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3276 [AC_DEFINE(HAVE_AS_FPRND, 1,
3277 [Define if your assembler supports fprnd.])])
3280 *-*-aix*) conftest_s=' .machine "pwr6"
3283 *) conftest_s=' .machine power6
3288 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3289 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3291 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3292 [Define if your assembler supports mffgpr and mftgpr.])])
3295 *-*-aix*) conftest_s=' .csect .text[[PR]]
3297 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3301 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3302 *) conftest_s=' .text
3304 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3307 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3308 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3310 [AC_DEFINE(HAVE_AS_REL16, 1,
3311 [Define if your assembler supports R_PPC_REL16 relocs.])])
3314 *-*-aix*) conftest_s=' .machine "pwr6"
3317 *) conftest_s=' .machine power6
3322 gcc_GAS_CHECK_FEATURE([compare bytes support],
3323 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3325 [AC_DEFINE(HAVE_AS_CMPB, 1,
3326 [Define if your assembler supports cmpb.])])
3329 *-*-aix*) conftest_s=' .machine "pwr6"
3332 *) conftest_s=' .machine power6
3337 gcc_GAS_CHECK_FEATURE([decimal float support],
3338 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3340 [AC_DEFINE(HAVE_AS_DFP, 1,
3341 [Define if your assembler supports DFP instructions.])])
3344 *-*-aix*) conftest_s=' .machine "pwr7"
3347 *) conftest_s=' .machine power7
3352 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3353 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3355 [AC_DEFINE(HAVE_AS_VSX, 1,
3356 [Define if your assembler supports VSX instructions.])])
3359 *-*-aix*) conftest_s=' .machine "pwr7"
3362 *) conftest_s=' .machine power7
3367 gcc_GAS_CHECK_FEATURE([popcntd support],
3368 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3370 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3371 [Define if your assembler supports POPCNTD instructions.])])
3374 *-*-aix*) conftest_s=' .csect .text[[PR]]
3376 *) conftest_s=' .text
3380 gcc_GAS_CHECK_FEATURE([lwsync support],
3381 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3383 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3384 [Define if your assembler supports LWSYNC instructions.])])
3387 *-*-aix*) conftest_s=' .machine "476"
3390 *) conftest_s=' .machine "476"
3395 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3396 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3398 [AC_DEFINE(HAVE_AS_DCI, 1,
3399 [Define if your assembler supports the DCI/ICI instructions.])])
3401 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3402 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3403 [.gnu_attribute 4,1],,
3404 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3405 [Define if your assembler supports .gnu_attribute.])])
3407 gcc_GAS_CHECK_FEATURE([tls marker support],
3408 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3409 [ bl __tls_get_addr(x@tlsgd)],,
3410 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3411 [Define if your assembler supports arg info for __tls_get_addr.])])
3415 gcc_GAS_CHECK_FEATURE([.ref support],
3416 gcc_cv_as_aix_ref, [2.21.0],,
3417 [ .csect stuff[[rw]]
3423 [AC_DEFINE(HAVE_AS_REF, 1,
3424 [Define if your assembler supports .ref])])
3430 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3431 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3432 [ lw $4,%gp_rel(foo)($4)],,
3433 [if test x$target_cpu_default = x
3434 then target_cpu_default=MASK_EXPLICIT_RELOCS
3435 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3437 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3438 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3439 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3440 [Define if the assembler understands -mno-shared.])])
3442 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3443 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3444 [.gnu_attribute 4,1],,
3445 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3446 [Define if your assembler supports .gnu_attribute.])])
3448 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3449 gcc_cv_as_mips_dtprelword, [2,18,0],,
3450 [.section .tdata,"awT",@progbits
3454 .dtprelword x+0x8000],,
3455 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3456 [Define if your assembler supports .dtprelword.])])
3458 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3459 gcc_cv_as_ld_jalr_reloc=no
3460 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3461 if test $in_tree_ld = yes ; then
3462 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3463 && test $in_tree_ld_is_elf = yes; then
3464 gcc_cv_as_ld_jalr_reloc=yes
3466 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3467 echo ' .ent x' > conftest.s
3468 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3469 echo ' ld $25,%call16(y)($28)' >> conftest.s
3470 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3471 echo '1: jalr $25' >> conftest.s
3472 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3473 echo '1: jalr $25' >> conftest.s
3474 echo ' .end x' >> conftest.s
3475 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3476 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3477 if $gcc_cv_objdump -d conftest.so | grep -q jalr \
3478 && $gcc_cv_objdump -d conftest.so | grep -q "bal.*<x>"; then
3479 gcc_cv_as_ld_jalr_reloc=yes
3485 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3486 if test x$target_cpu_default = x; then
3487 target_cpu_default=MASK_RELAX_PIC_CALLS
3489 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3492 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3494 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3495 [gcc_cv_ld_mips_personality_relaxation],
3496 [gcc_cv_ld_mips_personality_relaxation=no
3497 if test $in_tree_ld = yes ; then
3498 if test "$gcc_cv_gld_major_version" -eq 2 \
3499 -a "$gcc_cv_gld_minor_version" -ge 21 \
3500 -o "$gcc_cv_gld_major_version" -gt 2; then
3501 gcc_cv_ld_mips_personality_relaxation=yes
3503 elif test x$gcc_cv_as != x \
3504 -a x$gcc_cv_ld != x \
3505 -a x$gcc_cv_readelf != x ; then
3506 cat > conftest.s <<EOF
3508 .cfi_personality 0x80,indirect_ptr
3515 .section .data,"aw",@progbits
3519 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3520 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3521 if $gcc_cv_readelf -d conftest 2>&1 \
3522 | grep TEXTREL > /dev/null 2>&1; then
3524 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3525 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3528 gcc_cv_ld_mips_personality_relaxation=yes
3532 rm -f conftest.s conftest.o conftest])
3533 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3534 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3535 [Define if your linker can relax absolute .eh_frame personality
3536 pointers into PC-relative form.])
3541 # Mips and HP-UX need the GNU assembler.
3542 # Linux on IA64 might be able to use the Intel assembler.
3545 mips*-*-* | *-*-hpux* )
3546 if test x$gas_flag = xyes \
3547 || test x"$host" != x"$build" \
3548 || test ! -x "$gcc_cv_as" \
3549 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3552 echo "*** This configuration requires the GNU assembler" >&2
3558 # ??? Not all targets support dwarf2 debug_line, even within a version
3559 # of gas. Moreover, we need to emit a valid instruction to trigger any
3560 # info to the output file. So, as supported targets are added to gas 2.11,
3561 # add some instruction here to (also) show we expect this might work.
3562 # ??? Once 2.11 is released, probably need to add first known working
3563 # version to the per-target configury.
3565 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3566 | x86_64*-*-* | hppa*-*-* | arm*-*-* \
3567 | xstormy16*-*-* | cris-*-* | crisv32-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \
3568 | spu-*-* | fido*-*-* | m32c-*-*)
3571 ia64*-*-* | s390*-*-*)
3578 if test x"$insn" != x; then
3580 .file 1 \"conftest.s\"
3583 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3584 gcc_cv_as_dwarf2_debug_line,
3585 [elf,2,11,0],, [$conftest_s],
3586 [if test x$gcc_cv_objdump != x \
3587 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3588 | grep debug_line > /dev/null 2>&1; then
3589 gcc_cv_as_dwarf2_debug_line=yes
3592 # The .debug_line file table must be in the exact order that
3593 # we specified the files, since these indices are also used
3594 # by DW_AT_decl_file. Approximate this test by testing if
3595 # the assembler bitches if the same index is assigned twice.
3596 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3597 gcc_cv_as_dwarf2_file_buggy,,,
3601 if test $gcc_cv_as_dwarf2_debug_line = yes \
3602 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3603 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3604 [Define if your assembler supports dwarf2 .file/.loc directives,
3605 and preserves file table indices exactly as given.])
3608 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3609 gcc_cv_as_gdwarf2_flag,
3610 [elf,2,11,0], [--gdwarf2], [$insn],,
3611 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3612 [Define if your assembler supports the --gdwarf2 option.])])
3614 gcc_GAS_CHECK_FEATURE([--gstabs option],
3615 gcc_cv_as_gstabs_flag,
3616 [elf,2,11,0], [--gstabs], [$insn],
3617 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3618 # and warns about it, but still exits successfully. So check for
3620 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3622 else gcc_cv_as_gstabs_flag=yes
3624 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3625 [Define if your assembler supports the --gstabs option.])])
3627 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3628 gcc_cv_as_debug_prefix_map_flag,
3629 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3630 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3631 [Define if your assembler supports the --debug-prefix-map option.])])
3634 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3637 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3638 [Define if your assembler supports .lcomm with an alignment field.])])
3640 AC_ARG_ENABLE(gnu-unique-object,
3641 [ --enable-gnu-unique-object enable the use of the @gnu_unique_object ELF extension on
3643 [case $enable_gnu_unique_object in
3645 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
3646 Valid choices are 'yes' and 'no'.]) ;;
3648 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
3650 [.type foo, @gnu_unique_object],,
3651 # Also check for ld.so support, i.e. glibc 2.11 or higher.
3652 [[if test x$host = x$build -a x$host = x$target &&
3653 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
3654 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
3655 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
3656 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
3657 if test "$glibcnum" -ge 2011 ; then
3658 enable_gnu_unique_object=yes
3661 if test x$enable_gnu_unique_object = xyes; then
3662 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
3663 [Define if your assembler supports @gnu_unique_object.])
3666 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3667 [gcc_cv_as_line_zero],
3668 [gcc_cv_as_line_zero=no
3669 if test $in_tree_gas = yes; then
3670 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3671 elif test "x$gcc_cv_as" != x; then
3672 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3673 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3674 test "x`cat conftest.out`" = x
3676 gcc_cv_as_line_zero=yes
3678 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3679 cat conftest.s >&AS_MESSAGE_LOG_FD
3680 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3681 cat conftest.out >&AS_MESSAGE_LOG_FD
3683 rm -f conftest.o conftest.s conftest.out
3685 if test "x$gcc_cv_as_line_zero" = xyes; then
3686 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3687 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3690 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3691 gcc_cv_ld_eh_frame_hdr=no
3692 if test $in_tree_ld = yes ; then
3693 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3694 && test $in_tree_ld_is_elf = yes; then
3695 gcc_cv_ld_eh_frame_hdr=yes
3697 elif test x$gcc_cv_ld != x; then
3698 # Check if linker supports --eh-frame-hdr option
3699 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3700 gcc_cv_ld_eh_frame_hdr=yes
3703 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3704 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3705 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3706 [Define if your linker supports --eh-frame-hdr option.])
3708 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3710 AC_MSG_CHECKING(linker position independent executable support)
3712 if test $in_tree_ld = yes ; then
3713 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3714 && test $in_tree_ld_is_elf = yes; then
3717 elif test x$gcc_cv_ld != x; then
3718 # Check if linker supports -pie option
3719 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3723 if test x"$gcc_cv_ld_pie" = xyes; then
3724 AC_DEFINE(HAVE_LD_PIE, 1,
3725 [Define if your linker supports -pie option.])
3727 AC_MSG_RESULT($gcc_cv_ld_pie)
3729 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3730 gcc_cv_ld_eh_gc_sections=no
3731 if test $in_tree_ld = yes ; then
3732 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3733 && test $in_tree_ld_is_elf = yes; then
3734 gcc_cv_ld_eh_gc_sections=yes
3736 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3737 cat > conftest.s <<EOF
3740 .type _start, @function
3743 .size _start, .-_start
3744 .section .text.foo,"ax",@progbits
3745 .type foo, @function
3749 .section .gcc_except_table.foo,"a",@progbits
3752 .section .eh_frame,"a",@progbits
3755 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3756 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3757 | grep "gc-sections option ignored" > /dev/null; then
3758 gcc_cv_ld_eh_gc_sections=no
3759 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3760 gcc_cv_ld_eh_gc_sections=yes
3761 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3762 if test x$gcc_cv_as_comdat_group != xyes; then
3763 gcc_cv_ld_eh_gc_sections=no
3764 cat > conftest.s <<EOF
3767 .type _start, @function
3770 .size _start, .-_start
3771 .section .gnu.linkonce.t.foo,"ax",@progbits
3772 .type foo, @function
3776 .section .gcc_except_table.foo,"a",@progbits
3779 .section .eh_frame,"a",@progbits
3782 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3783 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3784 | grep "gc-sections option ignored" > /dev/null; then
3785 gcc_cv_ld_eh_gc_sections=no
3786 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3787 gcc_cv_ld_eh_gc_sections=yes
3793 rm -f conftest.s conftest.o conftest
3797 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3798 gcc_cv_ld_eh_gc_sections=no
3801 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3802 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3803 [Define if your linker supports garbage collection of
3804 sections in presence of EH frames.])
3806 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3812 AC_CACHE_CHECK(linker --as-needed support,
3813 gcc_cv_ld_as_needed,
3814 [gcc_cv_ld_as_needed=no
3815 if test $in_tree_ld = yes ; then
3816 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3817 && test $in_tree_ld_is_elf = yes; then
3818 gcc_cv_ld_as_needed=yes
3820 elif test x$gcc_cv_ld != x; then
3821 # Check if linker supports --as-needed and --no-as-needed options
3822 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3823 gcc_cv_ld_as_needed=yes
3827 if test x"$gcc_cv_ld_as_needed" = xyes; then
3828 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3829 [Define if your linker supports --as-needed and --no-as-needed options.])
3832 case "$target:$tm_file" in
3833 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3834 AC_CACHE_CHECK(linker support for omitting dot symbols,
3835 gcc_cv_ld_no_dot_syms,
3836 [gcc_cv_ld_no_dot_syms=no
3837 if test $in_tree_ld = yes ; then
3838 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3839 gcc_cv_ld_no_dot_syms=yes
3841 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3842 cat > conftest1.s <<EOF
3846 cat > conftest2.s <<EOF
3847 .section ".opd","aw"
3852 .quad .LEfoo,.TOC.@tocbase,0
3858 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3859 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3860 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3861 gcc_cv_ld_no_dot_syms=yes
3863 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3866 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3867 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3868 [Define if your PowerPC64 linker only needs function descriptor syms.])
3873 AC_CACHE_CHECK(linker --build-id support,
3875 [gcc_cv_ld_buildid=no
3876 if test $in_tree_ld = yes ; then
3877 if test "$gcc_cv_gld_major_version" -eq 2 -a \
3878 "$gcc_cv_gld_minor_version" -ge 18 -o \
3879 "$gcc_cv_gld_major_version" -gt 2 \
3880 && test $in_tree_ld_is_elf = yes; then
3881 gcc_cv_ld_buildid=yes
3883 elif test x$gcc_cv_ld != x; then
3884 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
3885 gcc_cv_ld_buildid=yes
3888 if test x"$gcc_cv_ld_buildid" = xyes; then
3889 AC_DEFINE(HAVE_LD_BUILDID, 1,
3890 [Define if your linker supports --build-id.])
3893 AC_ARG_ENABLE(linker-build-id,
3894 [ --enable-linker-build-id
3895 compiler will always pass --build-id to linker],
3897 enable_linker_build_id=no)
3899 if test x"$enable_linker_build_id" = xyes; then
3900 if test x"$gcc_cv_ld_buildid" = xyes; then
3901 AC_DEFINE(ENABLE_LD_BUILDID, 1,
3902 [Define if gcc should always pass --build-id to linker.])
3904 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
3908 AC_CACHE_CHECK(linker --sysroot support,
3910 [gcc_cv_ld_sysroot=no
3911 if test $in_tree_ld = yes ; then
3912 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3913 gcc_cv_ld_sysroot=yes
3915 elif test x$gcc_cv_ld != x; then
3916 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3917 gcc_cv_ld_sysroot=yes
3920 if test x"$gcc_cv_ld_sysroot" = xyes; then
3921 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3922 [Define if your linker supports --sysroot.])
3925 if test x$with_sysroot = x && test x$host = x$target \
3926 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3927 && test "$prefix" != "NONE"; then
3928 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3929 [Define to PREFIX/include if cpp should also search that directory.])
3932 # Test for stack protector support in target C library.
3933 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3934 gcc_cv_libc_provides_ssp,
3935 [gcc_cv_libc_provides_ssp=no
3937 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
3938 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3939 if test "x$with_headers" != x; then
3940 glibc_header_dir=$with_headers
3941 elif test "x$with_sysroot" = x; then
3942 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3943 elif test "x$with_build_sysroot" != "x"; then
3944 glibc_header_dir="${with_build_sysroot}/usr/include"
3945 elif test "x$with_sysroot" = xyes; then
3946 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3948 glibc_header_dir="${with_sysroot}/usr/include"
3951 glibc_header_dir=/usr/include
3953 [# glibc 2.4 and later provides __stack_chk_fail and
3954 # either __stack_chk_guard, or TLS access to stack guard canary.
3955 if test -f $glibc_header_dir/features.h \
3956 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3957 $glibc_header_dir/features.h > /dev/null; then
3958 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3959 $glibc_header_dir/features.h > /dev/null; then
3960 gcc_cv_libc_provides_ssp=yes
3961 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3962 $glibc_header_dir/features.h > /dev/null \
3963 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3964 $glibc_header_dir/features.h > /dev/null; then
3965 gcc_cv_libc_provides_ssp=yes
3966 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
3967 $glibc_header_dir/features.h > /dev/null && \
3968 test -f $glibc_header_dir/bits/uClibc_config.h && \
3969 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
3970 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
3971 gcc_cv_libc_provides_ssp=yes
3976 # Avoid complicated tests (see
3977 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
3978 # simply assert that glibc does provide this, which is true for all
3979 # realistically usable GNU/Hurd configurations.
3980 gcc_cv_libc_provides_ssp=yes;;
3981 *-*-darwin* | *-*-freebsd*)
3982 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3983 [echo "no __stack_chk_fail on this target"])
3985 *) gcc_cv_libc_provides_ssp=no ;;
3988 if test x$gcc_cv_libc_provides_ssp = xyes; then
3989 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3990 [Define if your target C library provides stack protector support])
3993 # Check if TFmode long double should be used by default or not.
3994 # Some glibc targets used DFmode long double, but with glibc 2.4
3995 # and later they can use TFmode.
3997 powerpc*-*-linux* | \
4002 AC_ARG_WITH(long-double-128,
4003 [ --with-long-double-128 Use 128-bit long double by default.],
4004 gcc_cv_target_ldbl128="$with_long_double_128",
4005 [[gcc_cv_target_ldbl128=no
4006 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4007 if test "x$with_sysroot" = x; then
4008 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4009 elif test "x$with_build_sysroot" != "x"; then
4010 glibc_header_dir="${with_build_sysroot}/usr/include"
4011 elif test "x$with_sysroot" = xyes; then
4012 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4014 glibc_header_dir="${with_sysroot}/usr/include"
4017 glibc_header_dir=/usr/include
4019 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4020 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4021 && gcc_cv_target_ldbl128=yes
4025 if test x$gcc_cv_target_ldbl128 = xyes; then
4026 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4027 [Define if TFmode long double should be the default])
4030 # Find out what GC implementation we want, or may, use.
4032 [ --with-gc={page,zone} choose the garbage collection mechanism to use
4040 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4043 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4048 echo "Using $GGC for garbage collection."
4050 # Libraries to use on the host. This will normally be set by the top
4051 # level Makefile. Here we simply capture the value for our Makefile.
4052 if test -z "${HOST_LIBS+set}"; then
4057 # Use the system's zlib library.
4059 zlibinc="-I\$(srcdir)/../zlib"
4060 AC_ARG_WITH(system-zlib,
4061 [ --with-system-zlib use installed libz],
4068 dnl Very limited version of automake's enable-maintainer-mode
4070 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4071 dnl maintainer-mode is disabled by default
4072 AC_ARG_ENABLE(maintainer-mode,
4073 [ --enable-maintainer-mode
4074 enable make rules and dependencies not useful
4075 (and sometimes confusing) to the casual installer],
4076 maintainer_mode=$enableval,
4079 AC_MSG_RESULT($maintainer_mode)
4081 if test "$maintainer_mode" = "yes"; then
4092 # Make empty files to contain the specs and options for each language.
4093 # Then add #include lines to for a compiler that has specs and/or options.
4099 # These (without "all_") are set in each config-lang.in.
4100 # `language' must be a single word so is spelled singularly.
4103 all_outputs='Makefile gccbug'
4104 # List of language makefile fragments.
4106 # List of language subdirectory makefiles. Deprecated.
4108 # Additional files for gengtype
4109 all_gtfiles="$target_gtfiles"
4111 # These are the languages that are set in --enable-languages,
4112 # and are available in the GCC tree.
4113 all_selected_languages=
4115 # Add the language fragments.
4116 # Languages are added via two mechanisms. Some information must be
4117 # recorded in makefile variables, these are defined in config-lang.in.
4118 # We accumulate them and plug them into the main Makefile.
4119 # The other mechanism is a set of hooks for each of the main targets
4120 # like `clean', `install', etc.
4122 language_hooks="Make-hooks"
4124 for lang in ${srcdir}/*/config-lang.in
4127 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4129 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4130 if test "x$lang_alias" = x
4132 echo "$lang doesn't set \$language." 1>&2
4135 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4136 subdirs="$subdirs $subdir"
4138 # $gcc_subdir is where the gcc integration files are to be found
4139 # for a language, both for internal compiler purposes (compiler
4140 # sources implementing front-end to GCC tree converters), and for
4141 # build infrastructure purposes (Make-lang.in, etc.)
4143 # This will be <subdir> (relative to $srcdir) if a line like
4144 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4145 # is found in <langdir>/config-lang.in, and will remain <langdir>
4148 # Except for the language alias (fetched above), the regular
4149 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4150 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4151 # only this and the language alias.
4153 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4154 if [ "$gcc_subdir" = "" ]; then
4155 gcc_subdir="$subdir"
4158 case ",$enable_languages," in
4160 all_selected_languages="$all_selected_languages $lang_alias"
4161 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4162 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4174 . ${srcdir}/$gcc_subdir/config-lang.in
4175 if test "x$language" = x
4177 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4182 case ",$enable_languages," in
4185 for i in $subdir_requires; do
4186 test -f "${srcdir}/$i/config-lang.in" && continue
4194 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4195 if test -f $srcdir/$gcc_subdir/lang.opt; then
4196 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4198 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4199 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4201 if test -f ${srcdir}/$gcc_subdir/Makefile.in
4202 then all_lang_makefiles="$gcc_subdir/Makefile"
4204 all_languages="$all_languages $language"
4205 all_compilers="$all_compilers $compilers"
4206 all_outputs="$all_outputs $outputs"
4207 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4208 case ",$enable_languages," in
4210 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4212 AC_SUBST(enable_lto)
4218 # Pick up gtfiles for c
4220 . ${srcdir}/c-config-lang.in
4221 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4224 for language in $all_selected_languages
4226 check_languages="$check_languages check-$language"
4229 # We link each language in with a set of hooks, reached indirectly via
4230 # lang.${target}. Only do so for selected languages.
4234 target_list="all.cross start.encap rest.encap tags \
4235 install-common install-man install-info install-pdf install-html dvi \
4236 pdf html uninstall info man srcextra srcman srcinfo \
4237 mostlyclean clean distclean maintainer-clean install-plugin"
4239 for t in $target_list
4242 for lang in $all_selected_languages
4246 echo "lang.$t: $x" >> Make-hooks
4255 echo "dir ." > .gdbinit
4256 echo "dir ${srcdir}" >> .gdbinit
4257 if test x$gdb_needs_out_file_path = xyes
4259 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4261 if test "x$subdirs" != x; then
4264 echo "dir ${srcdir}/$s" >> .gdbinit
4267 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4269 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4270 AC_SUBST(gcc_tooldir)
4273 # Find a directory in which to install a shared libgcc.
4275 AC_ARG_ENABLE(version-specific-runtime-libs,
4276 [ --enable-version-specific-runtime-libs
4277 specify that runtime libraries should be
4278 installed in a compiler-specific directory])
4280 AC_ARG_WITH(slibdir,
4281 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
4282 slibdir="$with_slibdir",
4283 if test "${enable_version_specific_runtime_libs+set}" = set; then
4284 slibdir='$(libsubdir)'
4285 elif test "$host" != "$target"; then
4286 slibdir='$(build_tooldir)/lib'
4292 # Substitute configuration variables
4295 AC_SUBST(all_compilers)
4296 AC_SUBST(all_gtfiles)
4297 AC_SUBST(all_lang_makefrags)
4298 AC_SUBST(all_lang_makefiles)
4299 AC_SUBST(all_languages)
4300 AC_SUBST(all_selected_languages)
4301 AC_SUBST(build_exeext)
4302 AC_SUBST(build_install_headers_dir)
4303 AC_SUBST(build_xm_file_list)
4304 AC_SUBST(build_xm_include_list)
4305 AC_SUBST(build_xm_defines)
4306 AC_SUBST(build_file_translate)
4307 AC_SUBST(check_languages)
4308 AC_SUBST(cpp_install_dir)
4309 AC_SUBST(xmake_file)
4310 AC_SUBST(tmake_file)
4311 AC_SUBST(TM_ENDIAN_CONFIG)
4312 AC_SUBST(TM_MULTILIB_CONFIG)
4313 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4314 AC_SUBST(extra_gcc_objs)
4315 AC_SUBST(extra_headers_list)
4316 AC_SUBST(extra_objs)
4317 AC_SUBST(extra_parts)
4318 AC_SUBST(extra_passes)
4319 AC_SUBST(extra_programs)
4320 AC_SUBST(float_h_file)
4321 AC_SUBST(gcc_config_arguments)
4322 AC_SUBST(gcc_gxx_include_dir)
4323 AC_SUBST(host_exeext)
4324 AC_SUBST(host_xm_file_list)
4325 AC_SUBST(host_xm_include_list)
4326 AC_SUBST(host_xm_defines)
4327 AC_SUBST(out_host_hook_obj)
4329 AC_SUBST(lang_opt_files)
4330 AC_SUBST(lang_specs_files)
4331 AC_SUBST(lang_tree_files)
4332 AC_SUBST(local_prefix)
4334 AC_SUBST(objc_boehm_gc)
4336 AC_SUBST(out_object_file)
4337 AC_SUBST(thread_file)
4338 AC_SUBST(tm_file_list)
4339 AC_SUBST(tm_include_list)
4340 AC_SUBST(tm_defines)
4341 AC_SUBST(tm_p_file_list)
4342 AC_SUBST(tm_p_include_list)
4343 AC_SUBST(xm_file_list)
4344 AC_SUBST(xm_include_list)
4345 AC_SUBST(xm_defines)
4346 AC_SUBST(use_gcc_stdint)
4347 AC_SUBST(c_target_objs)
4348 AC_SUBST(cxx_target_objs)
4349 AC_SUBST(fortran_target_objs)
4350 AC_SUBST(target_cpu_default)
4352 AC_SUBST_FILE(language_hooks)
4355 if test x${build} = x${host} ; then
4356 if test x${host} = x${target} ; then
4357 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4359 echo "Links are now set up to build a cross-compiler" 1>&2
4360 echo " from ${host} to ${target}." 1>&2
4363 if test x${host} = x${target} ; then
4364 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4365 echo " for ${target}." 1>&2
4367 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4368 echo " from ${host} to ${target}." 1>&2
4372 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4373 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4375 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4376 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4378 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4379 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4380 if test "x${CLOOGLIBS}" != "x" ; then
4381 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4384 AC_ARG_VAR(LIBELFLIBS,[How to link libelf])
4385 AC_ARG_VAR(LIBELFINC,[How to find libelf include files])
4386 if test "x${LIBELFLIBS}" != "x" ; then
4387 AC_DEFINE(HAVE_libelf, 1, [Define if libelf is in use.])
4390 # Check for plugin support
4391 AC_ARG_ENABLE(plugin,
4392 [ --enable-plugin enable plugin support],
4393 enable_plugin=$enableval,
4394 enable_plugin=yes; default_plugin=yes)
4397 if test x"$enable_plugin" = x"yes"; then
4399 AC_MSG_CHECKING([for exported symbols])
4400 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4401 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4402 if $gcc_cv_objdump -T conftest | grep foobar > /dev/null; then
4403 : # No need to use a flag
4405 AC_MSG_CHECKING([for -rdynamic])
4406 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
4407 if $gcc_cv_objdump -T conftest | grep foobar > /dev/null; then
4408 pluginlibs="-rdynamic"
4416 AC_SEARCH_LIBS([dlopen], [dl])
4417 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
4418 pluginlibs="$pluginlibs -ldl"
4422 # Check that we can build shared objects with -fPIC -shared
4423 saved_LDFLAGS="$LDFLAGS"
4424 LDFLAGS="$LDFLAGS -fPIC -shared"
4425 AC_MSG_CHECKING([for -fPIC -shared])
4427 [extern int X;],[return X == 0;],
4428 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
4429 [AC_MSG_RESULT([no]); have_pic_shared=no])
4430 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
4434 LDFLAGS="$saved_LDFLAGS"
4436 # If plugin support had been requested but not available, fail.
4437 if test x"$enable_plugin" = x"no" ; then
4438 if test x"$default_plugin" != x"yes"; then
4440 Building GCC with plugin support requires a host that supports
4441 -fPIC, -shared, -ldl and -rdynamic.])
4446 AC_SUBST(pluginlibs)
4447 AC_SUBST(enable_plugin)
4448 if test x"$enable_plugin" = x"yes"; then
4449 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
4452 # Configure the subdirectories
4453 # AC_CONFIG_SUBDIRS($subdirs)
4455 # Create the Makefile
4456 # and configure language subdirectories
4457 AC_CONFIG_FILES($all_outputs)
4459 AC_CONFIG_COMMANDS([default],
4461 case ${CONFIG_HEADERS} in
4462 *auto-host.h:config.in*)
4465 # Make sure all the subdirs exist.
4466 for d in $subdirs doc build
4468 test -d $d || mkdir $d
4471 [subdirs='$subdirs'])