2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
5 # 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
7 #This file is part of GCC.
9 #GCC is free software; you can redistribute it and/or modify it under
10 #the terms of the GNU General Public License as published by the Free
11 #Software Foundation; either version 3, or (at your option) any later
14 #GCC is distributed in the hope that it will be useful, but WITHOUT
15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 #You should have received a copy of the GNU General Public License
20 #along with GCC; see the file COPYING3. If not see
21 #<http://www.gnu.org/licenses/>.
23 # --------------------------------
24 # Initialization and sanity checks
25 # --------------------------------
29 AC_CONFIG_SRCDIR(tree.c)
30 AC_CONFIG_HEADER(auto-host.h:config.in)
32 gcc_version=`cat $srcdir/BASE-VER`
34 # Determine the host, build, and target systems
39 # Determine the noncanonical target name, for directory use.
40 ACX_NONCANONICAL_TARGET
42 # Determine the target- and build-specific subdirectories
45 # Set program_transform_name
48 # Check for bogus environment variables.
49 # Test if LIBRARY_PATH contains the notation for the current directory
50 # since this would lead to problems installing/building glibc.
51 # LIBRARY_PATH contains the current directory if one of the following
53 # - one of the terminals (":" and ";") is the first or last sign
54 # - two terminals occur directly after each other
55 # - the path contains an element with a dot in it
56 AC_MSG_CHECKING(LIBRARY_PATH variable)
58 case ${LIBRARY_PATH} in
59 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
60 library_path_setting="contains current directory"
63 library_path_setting="ok"
67 AC_MSG_RESULT($library_path_setting)
68 if test "$library_path_setting" != "ok"; then
70 *** LIBRARY_PATH shouldn't contain the current directory when
71 *** building gcc. Please change the environment variable
72 *** and run configure again.])
75 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
76 # since this would lead to problems installing/building glibc.
77 # GCC_EXEC_PREFIX contains the current directory if one of the following
79 # - one of the terminals (":" and ";") is the first or last sign
80 # - two terminals occur directly after each other
81 # - the path contains an element with a dot in it
82 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
84 case ${GCC_EXEC_PREFIX} in
85 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
86 gcc_exec_prefix_setting="contains current directory"
89 gcc_exec_prefix_setting="ok"
93 AC_MSG_RESULT($gcc_exec_prefix_setting)
94 if test "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [ --with-local-prefix=DIR specifies directory to put local include],
109 [case "${withval}" in
110 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
112 *) local_prefix=$with_local_prefix ;;
115 # Default local prefix if it is empty
116 if test x$local_prefix = x; then
117 local_prefix=/usr/local
120 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
121 # passed in by the toplevel make and thus we'd get different behavior
122 # depending on where we built the sources.
124 # Specify the g++ header file directory
125 AC_ARG_WITH(gxx-include-dir,
126 [ --with-gxx-include-dir=DIR
127 specifies directory to put g++ header files],
128 [case "${withval}" in
129 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
131 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
134 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
135 if test x${gcc_gxx_include_dir} = x; then
136 if test x${enable_version_specific_runtime_libs} = xyes; then
137 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 libstdcxx_incdir='include/c++/$(version)'
140 if test x$host != x$target; then
141 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
143 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
147 AC_ARG_WITH(cpp_install_dir,
148 [ --with-cpp-install-dir=DIR
149 install the user visible C preprocessor in DIR
150 (relative to PREFIX) as well as PREFIX/bin],
151 [if test x$withval = xyes; then
152 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
153 elif test x$withval != xno; then
154 cpp_install_dir=$withval
157 # We would like to our source tree to be readonly. However when releases or
158 # pre-releases are generated, the flex/bison generated files as well as the
159 # various formats of manuals need to be included along with the rest of the
160 # sources. Therefore we have --enable-generated-files-in-srcdir to do
163 AC_MSG_CHECKING([whether to place generated files in the source directory])
164 dnl generated-files-in-srcdir is disabled by default
165 AC_ARG_ENABLE(generated-files-in-srcdir,
166 [ --enable-generated-files-in-srcdir
167 put copies of generated files in source dir
168 intended for creating source tarballs for users
169 without texinfo bison or flex.],
170 generated_files_in_srcdir=$enableval,
171 generated_files_in_srcdir=no)
173 AC_MSG_RESULT($generated_files_in_srcdir)
175 if test "$generated_files_in_srcdir" = "yes"; then
182 # -------------------
183 # Find default linker
184 # -------------------
188 [ --with-gnu-ld arrange to work with GNU ld.],
189 gnu_ld_flag="$with_gnu_ld",
192 # With pre-defined ld
194 [ --with-ld arrange to use the specified ld (full pathname)],
195 DEFAULT_LINKER="$with_ld")
196 if test x"${DEFAULT_LINKER+set}" = x"set"; then
197 if test ! -x "$DEFAULT_LINKER"; then
198 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
199 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
202 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
203 [Define to enable the use of a default linker.])
206 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
207 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
209 AC_MSG_CHECKING([whether a default linker was specified])
210 if test x"${DEFAULT_LINKER+set}" = x"set"; then
211 if test x"$gnu_ld_flag" = x"no"; then
212 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
214 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
220 # With demangler in GNU ld
221 AC_ARG_WITH(demangler-in-ld,
222 [ --with-demangler-in-ld try to use demangler in GNU ld.],
223 demangler_in_ld="$with_demangler_in_ld",
226 # ----------------------
227 # Find default assembler
228 # ----------------------
232 [ --with-gnu-as arrange to work with GNU as],
233 gas_flag="$with_gnu_as",
237 [ --with-as arrange to use the specified as (full pathname)],
238 DEFAULT_ASSEMBLER="$with_as")
239 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
240 if test ! -x "$DEFAULT_ASSEMBLER"; then
241 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
242 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
245 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
246 [Define to enable the use of a default assembler.])
249 gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
250 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
252 AC_MSG_CHECKING([whether a default assembler was specified])
253 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
254 if test x"$gas_flag" = x"no"; then
255 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
257 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
267 # If a non-executable a.out is present (e.g. created by GNU as above even if
268 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
269 # file, even when creating an executable, so an execution test fails.
270 # Remove possible default executable files to avoid this.
272 # FIXME: This really belongs into AC_PROG_CC and can be removed once
273 # Autoconf includes it.
274 rm -f a.out a.exe b.out
276 # Find the native compiler
280 ACX_PROG_GNAT([-I"$srcdir"/ada])
282 # autoconf is lame and doesn't give us any substitution variable for this.
283 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
284 NO_MINUS_C_MINUS_O=yes
286 OUTPUT_OPTION='-o $@'
288 AC_SUBST(NO_MINUS_C_MINUS_O)
289 AC_SUBST(OUTPUT_OPTION)
291 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
292 # optimizations to be activated explicitly by the toplevel.
295 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
299 # -------------------------
300 # Check C compiler features
301 # -------------------------
303 AC_USE_SYSTEM_EXTENSIONS
307 # sizeof(char) is 1 by definition.
308 AC_CHECK_SIZEOF(void *)
309 AC_CHECK_SIZEOF(short)
311 AC_CHECK_SIZEOF(long)
312 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
313 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
316 # ---------------------
317 # Warnings and checking
318 # ---------------------
320 # Check $CC warning features (if it's GCC).
321 # We want to use -pedantic, but we don't want warnings about
325 # So, we only use -pedantic if we can disable those warnings.
327 ACX_PROG_CC_WARNING_OPTS(
328 m4_quote(m4_do([-W -Wall -Wwrite-strings -Wcast-qual])), [loose_warn])
329 ACX_PROG_CC_WARNING_OPTS(
330 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
332 ACX_PROG_CC_WARNING_OPTS(
333 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
334 ACX_PROG_CC_WARNING_OPTS(
335 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
336 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
337 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
338 [-Wno-overlength-strings])), [strict_warn])
339 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
341 # The above macros do nothing if the compiler is not GCC. However, the
342 # Makefile has more goo to add other flags, so these variables are used
343 # to enable warnings only for GCC.
346 if test "x$GCC" = "xyes"; then
347 warn_cflags='$(GCC_WARN_CFLAGS)'
348 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
350 AC_SUBST(warn_cflags)
351 AC_SUBST(warn_cxxflags)
353 # Enable expensive internal checks
355 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
359 AC_ARG_ENABLE(checking,
360 [ --enable-checking[=LIST]
361 enable expensive run-time checks. With LIST,
362 enable only specific categories of checks.
363 Categories are: yes,no,all,none,release.
364 Flags are: assert,df,fold,gc,gcac,gimple,misc,
365 rtlflag,rtl,runtime,tree,valgrind,types.],
366 [ac_checking_flags="${enableval}"],[
367 # Determine the default checks.
368 if test x$is_release = x ; then
369 ac_checking_flags=yes
371 ac_checking_flags=release
373 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
374 for check in release $ac_checking_flags
377 # these set all the flags to specific states
378 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
379 ac_fold_checking= ; ac_gc_checking=1 ;
380 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
381 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
382 ac_tree_checking=1 ; ac_valgrind_checking= ;
383 ac_types_checking=1 ;;
384 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
385 ac_fold_checking= ; ac_gc_checking= ;
386 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
387 ac_rtlflag_checking= ; ac_runtime_checking= ;
388 ac_tree_checking= ; ac_valgrind_checking= ;
389 ac_types_checking= ;;
390 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
391 ac_fold_checking=1 ; ac_gc_checking=1 ;
392 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
393 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
394 ac_tree_checking=1 ; ac_valgrind_checking= ;
395 ac_types_checking=1 ;;
396 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
397 ac_fold_checking= ; ac_gc_checking= ;
398 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
399 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
400 ac_tree_checking= ; ac_valgrind_checking= ;
401 ac_types_checking= ;;
402 # these enable particular checks
403 assert) ac_assert_checking=1 ;;
404 df) ac_df_checking=1 ;;
405 fold) ac_fold_checking=1 ;;
406 gc) ac_gc_checking=1 ;;
407 gcac) ac_gc_always_collect=1 ;;
408 gimple) ac_gimple_checking=1 ;;
409 misc) ac_checking=1 ;;
410 rtl) ac_rtl_checking=1 ;;
411 rtlflag) ac_rtlflag_checking=1 ;;
412 runtime) ac_runtime_checking=1 ;;
413 tree) ac_tree_checking=1 ;;
414 types) ac_types_checking=1 ;;
415 valgrind) ac_valgrind_checking=1 ;;
416 *) AC_MSG_ERROR(unknown check category $check) ;;
422 if test x$ac_checking != x ; then
423 AC_DEFINE(ENABLE_CHECKING, 1,
424 [Define if you want more run-time sanity checks. This one gets a grab
425 bag of miscellaneous but relatively cheap checks.])
426 nocommon_flag=-fno-common
428 AC_SUBST(nocommon_flag)
429 if test x$ac_df_checking != x ; then
430 AC_DEFINE(ENABLE_DF_CHECKING, 1,
431 [Define if you want more run-time sanity checks for dataflow.])
433 if test x$ac_assert_checking != x ; then
434 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
435 [Define if you want assertions enabled. This is a cheap check.])
437 if test x$ac_gimple_checking != x ; then
438 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
439 [Define if you want operations on GIMPLE (the basic data structure of
440 the high-level optimizers) to be checked for dynamic type safety at
441 runtime. This is moderately expensive.])
443 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
444 if test x$ac_runtime_checking != x ; then
445 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
446 [Define if you want runtime assertions enabled. This is a cheap check.])
448 if test x$ac_tree_checking != x ; then
449 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
450 [Define if you want all operations on trees (the basic data
451 structure of the front ends) to be checked for dynamic type safety
452 at runtime. This is moderately expensive. The tree browser debugging
453 routines will also be enabled by this option.
455 TREEBROWSER=tree-browser.o
457 if test x$ac_types_checking != x ; then
458 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
459 [Define if you want all gimple types to be verified after gimplifiation.
463 AC_SUBST(TREEBROWSER)
464 if test x$ac_rtl_checking != x ; then
465 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
466 [Define if you want all operations on RTL (the basic data structure
467 of the optimizer and back end) to be checked for dynamic type safety
468 at runtime. This is quite expensive.])
470 if test x$ac_rtlflag_checking != x ; then
471 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
472 [Define if you want RTL flag accesses to be checked against the RTL
473 codes that are supported for each access macro. This is relatively
476 if test x$ac_gc_checking != x ; then
477 AC_DEFINE(ENABLE_GC_CHECKING, 1,
478 [Define if you want the garbage collector to do object poisoning and
479 other memory allocation checks. This is quite expensive.])
481 if test x$ac_gc_always_collect != x ; then
482 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
483 [Define if you want the garbage collector to operate in maximally
484 paranoid mode, validating the entire heap and collecting garbage at
485 every opportunity. This is extremely expensive.])
487 if test x$ac_fold_checking != x ; then
488 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
489 [Define if you want fold checked that it never destructs its argument.
490 This is quite expensive.])
492 valgrind_path_defines=
495 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
496 dnl # an if statement. This was the source of very frustrating bugs
497 dnl # in converting to autoconf 2.5x!
498 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
500 if test x$ac_valgrind_checking != x ; then
501 # It is certainly possible that there's valgrind but no valgrind.h.
502 # GCC relies on making annotations so we must have both.
503 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
504 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
505 [[#include <valgrind/memcheck.h>
506 #ifndef VALGRIND_DISCARD
507 #error VALGRIND_DISCARD not defined
509 [gcc_cv_header_valgrind_memcheck_h=yes],
510 [gcc_cv_header_valgrind_memcheck_h=no])
511 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
512 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
513 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
514 [[#include <memcheck.h>
515 #ifndef VALGRIND_DISCARD
516 #error VALGRIND_DISCARD not defined
518 [gcc_cv_header_memcheck_h=yes],
519 [gcc_cv_header_memcheck_h=no])
520 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
521 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
522 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
523 if test "x$valgrind_path" = "x" \
524 || (test $have_valgrind_h = no \
525 && test $gcc_cv_header_memcheck_h = no \
526 && test $gcc_cv_header_valgrind_memcheck_h = no); then
527 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
529 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
530 valgrind_command="$valgrind_path -q"
531 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
532 [Define if you want to run subprograms and generated programs
533 through valgrind (a memory checker). This is extremely expensive.])
534 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
535 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
536 [Define if valgrind's valgrind/memcheck.h header is installed.])
538 if test $gcc_cv_header_memcheck_h = yes; then
539 AC_DEFINE(HAVE_MEMCHECK_H, 1,
540 [Define if valgrind's memcheck.h header is installed.])
543 AC_SUBST(valgrind_path_defines)
544 AC_SUBST(valgrind_command)
546 # Enable code coverage collection
547 AC_ARG_ENABLE(coverage,
548 [ --enable-coverage[=LEVEL]
549 enable compiler's code coverage collection.
550 Use to measure compiler performance and locate
551 unused parts of the compiler. With LEVEL, specify
552 optimization. Values are opt, noopt,
554 [case "${enableval}" in
556 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
559 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
562 # a.k.a. --disable-coverage
566 AC_MSG_ERROR(unknown coverage setting $enableval)
570 AC_SUBST(coverage_flags)
572 AC_ARG_ENABLE(gather-detailed-mem-stats,
573 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
574 [enable_gather_detailed_mem_stats=no])
575 if test x$enable_gather_detailed_mem_stats = xyes ; then
576 AC_DEFINE(GATHER_STATISTICS, 1,
577 [Define to enable detailed memory allocation stats gathering.])
580 # -------------------------------
581 # Miscenalleous configure options
582 # -------------------------------
584 # See if we are building gcc with C++.
585 AC_ARG_ENABLE(build-with-cxx,
586 [ --enable-build-with-cxx build with C++ compiler instead of C compiler],
587 ENABLE_BUILD_WITH_CXX=$enableval,
588 ENABLE_BUILD_WITH_CXX=no)
589 AC_SUBST(ENABLE_BUILD_WITH_CXX)
593 [ --with-stabs arrange to use stabs instead of host debug format],
597 # Determine whether or not multilibs are enabled.
598 AC_ARG_ENABLE(multilib,
599 [ --enable-multilib enable library support for multiple ABIs],
600 [], [enable_multilib=yes])
601 AC_SUBST(enable_multilib)
603 # Enable __cxa_atexit for C++.
604 AC_ARG_ENABLE(__cxa_atexit,
605 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
608 # Enable C extension for decimal float if target supports it.
609 AC_ARG_ENABLE(decimal-float,
610 [ --enable-decimal-float={no,yes,bid,dpd}
611 enable decimal float extension to C. Selecting 'bid'
612 or 'dpd' choses which decimal floating point format
615 case $enable_decimal_float in
616 yes | no | bid | dpd) ;;
617 *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
618 Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
623 powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
624 enable_decimal_float=yes
627 AC_MSG_WARN(decimal float is not supported for this target, ignored)
628 enable_decimal_float=no
633 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
634 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
635 [Define to 1 to enable decimal float extension to C.])
637 # x86's use BID format instead of DPD
638 case x$enable_decimal_float in
641 i?86*-*-linux* | x86_64*-*-linux*)
642 enable_decimal_float=bid
645 enable_decimal_float=dpd
650 # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
651 # dependency on libdecnumber.
652 enable_decimal_float=dpd
655 AC_SUBST(enable_decimal_float)
657 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
658 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
659 [Define to 1 to specify that we are using the BID decimal floating
660 point format instead of DPD])
662 # Enable C extension for fixed-point arithmetic.
663 AC_ARG_ENABLE(fixed-point,
664 [ --enable-fixed-point enable fixed-point arithmetic extension to C],
672 AC_MSG_WARN(fixed-point is not supported on IRIX, ignored)
673 enable_fixed_point=no
676 enable_fixed_point=yes
681 AC_MSG_WARN(fixed-point is not supported for this target, ignored)
682 enable_fixed_point=no
686 AC_SUBST(enable_fixed_point)
688 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
689 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
690 [Define to 1 to enable fixed-point arithmetic extension to C.])
693 # Pass with no value to take the default
694 # Pass with a value to specify a thread package
695 AC_ARG_ENABLE(threads,
696 [ --enable-threads enable thread usage for target GCC
697 --enable-threads=LIB use LIB thread package for target GCC],,
701 [ --enable-tls enable or disable generation of tls code
702 overriding the assembler check for tls support],
706 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
707 Valid choices are 'yes' and 'no'.]) ;;
711 AC_ARG_ENABLE(objc-gc,
712 [ --enable-objc-gc enable the use of Boehm's garbage collector with
713 the GNU Objective-C runtime],
714 if test x$enable_objc_gc = xno; then
722 [ --with-dwarf2 force the default debug format to be DWARF 2],
723 dwarf2="$with_dwarf2",
726 AC_ARG_ENABLE(shared,
727 [ --disable-shared don't provide a shared libgcc],
729 case $enable_shared in
733 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
734 for pkg in $enableval; do
735 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
742 ], [enable_shared=yes])
743 AC_SUBST(enable_shared)
745 AC_ARG_WITH(build-sysroot,
746 [ --with-build-sysroot=sysroot
747 use sysroot as the system root during the build])
750 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
752 case ${with_sysroot} in
753 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
754 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
757 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
758 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
760 if test "x$prefix" = xNONE; then
761 test_prefix=/usr/local
765 if test "x$exec_prefix" = xNONE; then
766 test_exec_prefix=$test_prefix
768 test_exec_prefix=$exec_prefix
770 case ${TARGET_SYSTEM_ROOT} in
771 "${test_prefix}"|"${test_prefix}/"*|\
772 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
773 '${prefix}'|'${prefix}/'*|\
774 '${exec_prefix}'|'${exec_prefix}/'*)
775 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
776 TARGET_SYSTEM_ROOT_DEFINE="$t"
781 TARGET_SYSTEM_ROOT_DEFINE=
782 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
784 AC_SUBST(TARGET_SYSTEM_ROOT)
785 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
786 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
789 [AS_HELP_STRING([--with-specs=SPECS],
790 [add SPECS to driver command-line processing])],
791 [CONFIGURE_SPECS=$withval],
794 AC_SUBST(CONFIGURE_SPECS)
796 # Build with intermodule optimisations
797 AC_ARG_ENABLE(intermodule,
798 [ --enable-intermodule build the compiler in one step],
799 [case ${enable_intermodule} in
800 yes) onestep="-onestep";;
806 ACX_PKGVERSION([GCC])
807 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
809 # Sanity check enable_languages in case someone does not run the toplevel
810 # configure # script.
811 AC_ARG_ENABLE(languages,
812 [ --enable-languages=LIST specify which front-ends to build],
813 [case ,${enable_languages}, in
815 # go safe -- we cannot be much sure without the toplevel
817 # analysis of which target libs are present and usable
821 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
826 enable_languages=c,${enable_languages}
829 [enable_languages=c])
831 AC_ARG_WITH(multilib-list,
832 [ --with-multilib-list Select multilibs (SH only)],
834 with_multilib_list=default)
836 # -------------------------
837 # Checks for other programs
838 # -------------------------
842 # Find some useful tools
844 # We need awk to create options.c and options.h.
845 # Bail out if it's missing.
847 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
855 # By default, the Darwin ranlib will not treat common symbols as
856 # definitions when building the archive table of contents. Other
857 # ranlibs do that; pass an option to the Darwin ranlib that makes
858 # it behave similarly.
864 AC_SUBST(ranlib_flags)
868 # See if cmp has --ignore-initial.
869 gcc_AC_PROG_CMP_IGNORE_INITIAL
871 # See if we have the mktemp command.
872 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
874 # See if makeinfo has been installed and is modern enough
875 # that we can use it.
876 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
877 [GNU texinfo.* \([0-9][0-9.]*\)],
878 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
879 if test $gcc_cv_prog_makeinfo_modern = no; then
881 *** Makeinfo is missing or too old.
882 *** Info documentation will not be built.])
889 # Is pod2man recent enough to regenerate manpages?
890 AC_MSG_CHECKING([for recent Pod::Man])
891 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
893 GENERATED_MANPAGES=generated-manpages
898 AC_SUBST(GENERATED_MANPAGES)
900 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
903 dnl Don't use AC_PROG_LEX; we insist on flex.
904 dnl LEXLIB is not useful in gcc.
905 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
908 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
910 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
911 # check for build == host before using them.
914 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
915 && test -d ../binutils ; then
916 NM='$(objdir)/../binutils/nm-new'
918 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
922 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
923 && test -d ../binutils ; then
924 AR='$(objdir)/../binutils/ar'
926 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
930 # --------------------
931 # Checks for C headers
932 # --------------------
934 # Need to reject headers which give warnings, so that the -Werror bootstrap
935 # works later. *sigh* This needs to come before all header checks.
942 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
943 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
944 sys/resource.h sys/param.h sys/times.h sys/stat.h \
945 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
947 # Check for thread headers.
948 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
949 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
951 # These tests can't be done till we know if we have limits.h.
960 # These libraries may be used by collect2.
961 # We may need a special search path to get them linked.
962 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
964 for libs in '' -lld -lmld \
965 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
966 '-L/usr/lib/cmplrs/cc3.11 -lmld'
969 AC_TRY_LINK_FUNC(ldopen,
970 [gcc_cv_collect2_libs="$libs"; break])
973 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
974 case $gcc_cv_collect2_libs in
976 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
978 AC_SUBST(COLLECT2_LIBS)
980 # When building Ada code on Alpha, we need exc_resume which is usually in
981 # -lexc. So test for it.
984 AC_SEARCH_LIBS(exc_resume, exc)
987 AC_SUBST(GNAT_LIBEXC)
989 # Some systems put ldexp and frexp in libm instead of libc; assume
990 # they're both in the same place. jcf-dump needs them.
993 AC_SEARCH_LIBS(ldexp, m)
998 # Use <inttypes.h> only if it exists,
999 # doesn't clash with <sys/types.h>, and declares intmax_t.
1000 AC_MSG_CHECKING(for inttypes.h)
1001 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1002 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1003 [[#include <sys/types.h>
1004 #include <inttypes.h>]],
1005 [[intmax_t i = -1;]])],
1006 [gcc_cv_header_inttypes_h=yes],
1007 [gcc_cv_header_inttypes_h=no])])
1008 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1009 if test $gcc_cv_header_inttypes_h = yes; then
1010 AC_DEFINE(HAVE_INTTYPES_H, 1,
1011 [Define if you have a working <inttypes.h> header file.])
1014 dnl Disabled until we have a complete test for buggy enum bitfields.
1015 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1017 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1018 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1019 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1020 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1021 putchar_unlocked putc_unlocked)
1022 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1023 sysconf strsignal getrusage nl_langinfo \
1024 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1027 save_CPPFLAGS="$CPPFLAGS"
1029 LIBS="$LIBS $LIBELFLIBS"
1030 AC_CHECK_FUNCS(elf_getshdrstrndx,,
1031 [AC_CHECK_FUNCS(elf_getshstrndx,
1032 [AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1036 return elf_getshstrndx (NULL, 0) == 0;
1037 }]])], AC_DEFINE(HAVE_ELF_GETSHSTRNDX_GABI, 1,
1038 [Define if elf_getshstrndx has gABI conformant return values.]))])]
1041 CPPFLAGS="$save_CPPFLAGS"
1043 if test x$ac_cv_func_mbstowcs = xyes; then
1044 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1045 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1051 [gcc_cv_func_mbstowcs_works=yes],
1052 [gcc_cv_func_mbstowcs_works=no],
1053 [gcc_cv_func_mbstowcs_works=yes])])
1054 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1055 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1056 [Define this macro if mbstowcs does not crash when its
1057 first argument is NULL.])
1061 AC_CHECK_TYPE(ssize_t, int)
1062 AC_CHECK_TYPE(caddr_t, char *)
1064 gcc_AC_FUNC_MMAP_BLACKLIST
1068 # Under VMS, vfork works very differently than on Unix. The standard test
1069 # won't work, and it isn't easily adaptable. It makes more sense to
1071 ac_cv_func_vfork_works=yes
1077 # Until we have in-tree GNU iconv:
1079 AC_SUBST(LIBICONV_DEP)
1085 # We will need to find libiberty.h and ansidecl.h
1086 saved_CFLAGS="$CFLAGS"
1087 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1088 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1089 strsignal strstr strverscmp \
1090 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1091 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1092 #include "ansidecl.h"
1093 #include "system.h"])
1095 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1096 #include "ansidecl.h"
1098 #ifdef HAVE_SYS_RESOURCE_H
1099 #include <sys/resource.h>
1103 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1104 #include "ansidecl.h"
1106 #ifdef HAVE_SYS_RESOURCE_H
1107 #include <sys/resource.h>
1109 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1110 [Define to `long' if <sys/resource.h> doesn't define.])])
1112 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1113 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1114 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1115 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1116 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1117 #include "ansidecl.h"
1126 gcc_AC_CHECK_DECLS(times, , ,[
1127 #include "ansidecl.h"
1129 #ifdef HAVE_SYS_TIMES_H
1130 #include <sys/times.h>
1134 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1135 #include "ansidecl.h"
1140 # More time-related stuff.
1141 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1142 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1143 #include "ansidecl.h"
1145 #ifdef HAVE_SYS_TIMES_H
1146 #include <sys/times.h>
1148 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1149 if test $ac_cv_struct_tms = yes; then
1150 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1151 [Define if <sys/times.h> defines struct tms.])
1154 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1155 # revisit after autoconf 2.50.
1156 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1157 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1158 #include "ansidecl.h"
1160 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1161 if test $gcc_cv_type_clock_t = yes; then
1162 AC_DEFINE(HAVE_CLOCK_T, 1,
1163 [Define if <time.h> defines clock_t.])
1166 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1167 CFLAGS="$saved_CFLAGS"
1169 gcc_AC_INITFINI_ARRAY
1171 # mkdir takes a single argument on some systems.
1172 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1180 # With Setjmp/Longjmp based exception handling.
1181 AC_ARG_ENABLE(sjlj-exceptions,
1182 [ --enable-sjlj-exceptions
1183 arrange to use setjmp/longjmp exception handling],
1186 if test $enableval != yes; then
1187 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1192 force_sjlj_exceptions=yes],
1195 force_sjlj_exceptions=yes
1199 force_sjlj_exceptions=no
1202 if test $force_sjlj_exceptions = yes; then
1203 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1204 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1205 [Define 0/1 to force the choice for exception handling model.])
1208 # For platforms with the unwind ABI which includes an unwind library,
1209 # libunwind, we can choose to use the system libunwind.
1210 # config.gcc also contains tests of with_system_libunwind.
1211 GCC_CHECK_UNWIND_GETIPINFO
1213 # --------------------------------------------------------
1214 # Build, host, and target specific configuration fragments
1215 # --------------------------------------------------------
1217 # Collect build-machine-specific information.
1218 . ${srcdir}/config.build
1220 # Collect host-machine-specific information.
1221 . ${srcdir}/config.host
1225 # Collect target-machine-specific information.
1226 . ${srcdir}/config.gcc
1228 extra_objs="${host_extra_objs} ${extra_objs}"
1229 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1231 # Default the target-machine variables that were not explicitly set.
1232 if test x"$tm_file" = x
1233 then tm_file=$cpu_type/$cpu_type.h; fi
1235 if test x"$extra_headers" = x
1236 then extra_headers=; fi
1238 if test x$md_file = x
1239 then md_file=$cpu_type/$cpu_type.md; fi
1241 if test x$out_file = x
1242 then out_file=$cpu_type/$cpu_type.c; fi
1244 if test x"$tmake_file" = x
1245 then tmake_file=$cpu_type/t-$cpu_type
1248 if test x"$dwarf2" = xyes
1249 then tm_file="$tm_file tm-dwarf2.h"
1252 # Say what files are being used for the output code and MD file.
1253 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1254 echo "Using \`$srcdir/config/$md_file' as machine description file."
1256 # If any of the xm_file variables contain nonexistent files, warn
1257 # about them and drop them.
1260 for x in $build_xm_file; do
1261 if test -f $srcdir/config/$x
1263 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1269 for x in $host_xm_file; do
1270 if test -f $srcdir/config/$x
1272 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1278 for x in $xm_file; do
1279 if test -f $srcdir/config/$x
1281 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1287 for f in $tm_file; do
1290 if test $count = ax; then
1291 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1293 echo "Using the following target machine macro files:"
1294 for f in $tm_file; do
1295 echo " $srcdir/config/$f"
1299 if test x$need_64bit_hwint = xyes; then
1300 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1301 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1304 if test x$use_long_long_for_widest_fast_int = xyes; then
1305 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1306 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1307 efficiently supported by the host hardware.])
1311 for f in $host_xm_file; do
1314 if test $count = a; then
1316 elif test $count = ax; then
1317 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1319 echo "Using the following host machine macro files:"
1320 for f in $host_xm_file; do
1321 echo " $srcdir/config/$f"
1324 echo "Using ${out_host_hook_obj} for host machine hooks."
1326 if test "$host_xm_file" != "$build_xm_file"; then
1328 for f in $build_xm_file; do
1331 if test $count = a; then
1333 elif test $count = ax; then
1334 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1336 echo "Using the following build machine macro files:"
1337 for f in $build_xm_file; do
1338 echo " $srcdir/config/$f"
1345 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1346 gcc_cv_mcontext_underscores,
1348 #include <sys/cdefs.h>
1349 #include <sys/signal.h>
1350 #include <ucontext.h>
1351 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1353 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1354 if test $gcc_cv_mcontext_underscores = yes; then
1355 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1356 [mcontext_t fields start with __])
1365 # Check if a valid thread package
1366 case ${enable_threads} in
1369 target_thread_file='single'
1373 target_thread_file='single'
1375 aix | dce | gnat | irix | posix | posix95 | rtems | \
1376 single | solaris | vxworks | win32 | mipssde)
1377 target_thread_file=${enable_threads}
1380 echo "${enable_threads} is an unknown thread package" 1>&2
1385 if test x${thread_file} = x; then
1386 # No thread file set by target-specific clauses in config.gcc,
1387 # so use file chosen by default logic above
1388 thread_file=${target_thread_file}
1391 # Make gthr-default.h if we have a thread file.
1393 if test $thread_file != single; then
1394 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1395 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1396 rm -f gthr-default.h-t
1398 mv -f gthr-default.h-t gthr-default.h
1400 gthread_flags=-DHAVE_GTHR_DEFAULT
1402 AC_SUBST(gthread_flags)
1409 if test x$enable___cxa_atexit = xyes || \
1410 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1411 if test x$host = x$target; then
1413 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1414 # keyed to flag_use_cxa_atexit
1419 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1420 [echo "__cxa_atexit can't be enabled on this target"])
1424 # We can't check for __cxa_atexit when building a cross, so assume
1428 if test x$use_cxa_atexit = xyes; then
1429 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1430 [Define if you want to use __cxa_atexit, rather than atexit, to
1431 register C++ destructors for local statics and global objects.
1432 This is essential for fully standards-compliant handling of
1433 destructors, but requires __cxa_atexit in libc.])
1437 # Look for a file containing extra machine modes.
1438 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1439 extra_modes_file='$(srcdir)'/config/${extra_modes}
1440 AC_SUBST(extra_modes_file)
1441 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1442 [Define to the name of a file containing a list of extra machine modes
1443 for this architecture.])
1446 # Convert extra_options into a form suitable for Makefile use.
1448 for f in $extra_options; do
1449 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1451 AC_SUBST(extra_opt_files)
1453 # auto-host.h is the file containing items generated by autoconf and is
1454 # the first file included by config.h.
1455 # If host=build, it is correct to have bconfig include auto-host.h
1456 # as well. If host!=build, we are in error and need to do more
1457 # work to find out the build config parameters.
1458 if test x$host = x$build
1460 build_auto=auto-host.h
1462 # We create a subdir, then run autoconf in the subdir.
1463 # To prevent recursion we set host and build for the new
1464 # invocation of configure to the build for this invocation
1471 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1472 *) realsrcdir=../${srcdir};;
1474 saved_CFLAGS="${CFLAGS}"
1475 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1476 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1477 ${realsrcdir}/configure \
1478 --enable-languages=${enable_languages-all} \
1479 --target=$target_alias --host=$build_alias --build=$build_alias
1480 CFLAGS="${saved_CFLAGS}"
1482 # We just finished tests for the build machine, so rename
1483 # the file auto-build.h in the gcc directory.
1484 mv auto-host.h ../auto-build.h
1487 build_auto=auto-build.h
1489 AC_SUBST(build_subdir)
1491 tm_file="${tm_file} defaults.h"
1492 tm_p_file="${tm_p_file} tm-preds.h"
1493 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1494 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1495 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1496 # put this back in temporarily.
1497 xm_file="auto-host.h ansidecl.h ${xm_file}"
1504 # Compile in configure arguments.
1505 if test -f configargs.h ; then
1506 # Being re-configured.
1507 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1508 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1510 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1513 # Double all backslashes and backslash all quotes to turn
1514 # gcc_config_arguments into a C string.
1515 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1516 $gcc_config_arguments
1518 gcc_config_arguments_str=`cat conftest.out`
1521 cat > configargs.h <<EOF
1522 /* Generated automatically. */
1523 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1524 static const char thread_model[] = "$thread_file";
1526 static const struct {
1527 const char *name, *value;
1528 } configure_default_options[] = $configure_default_options;
1533 gcc_BASEVER=`cat $srcdir/BASE-VER`
1534 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1535 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1536 if test -f $srcdir/REVISION ; then
1537 gcc_REVISION=`cat $srcdir/REVISION`
1541 cat > plugin-version.h <<EOF
1542 #include "configargs.h"
1544 static char basever[] = "$gcc_BASEVER";
1545 static char datestamp[] = "$gcc_DATESTAMP";
1546 static char devphase[] = "$gcc_DEVPHASE";
1547 static char revision[] = "$gcc_REVISION";
1549 /* FIXME plugins: We should make the version information more precise.
1550 One way to do is to add a checksum. */
1552 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1554 configuration_arguments};
1558 # Internationalization
1559 ZW_GNU_GETTEXT_SISTER_DIR
1561 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1562 # -liconv on the link line twice.
1563 case "$LIBINTL" in *$LIBICONV*)
1567 AC_ARG_ENABLE(secureplt,
1568 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1572 [ --enable-cld enable -mcld by default for 32bit x86], [],
1575 # Windows32 Registry support for specifying GCC installation paths.
1576 AC_ARG_ENABLE(win32-registry,
1577 [ --disable-win32-registry
1578 disable lookup of installation paths in the
1579 Registry on Windows hosts
1580 --enable-win32-registry enable registry lookup (default)
1581 --enable-win32-registry=KEY
1582 use KEY instead of GCC version as the last portion
1583 of the registry key],,)
1586 win32 | pe | cygwin* | mingw32* | uwin*)
1587 if test "x$enable_win32_registry" != xno; then
1588 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1591 if test "x$enable_win32_registry" != xno; then
1592 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1593 [Define to 1 if installation paths should be looked up in the Windows
1594 Registry. Ignored on non-Windows hosts.])
1596 if test "x$enable_win32_registry" != xyes \
1597 && test "x$enable_win32_registry" != x; then
1598 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1599 [Define to be the last component of the Windows registry key under which
1600 to look for installation paths. The full key used will be
1601 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1602 The default is the GCC version number.])
1608 # Get an absolute path to the GCC top-level source directory
1609 holddir=`${PWDCMD-pwd}`
1611 topdir=`${PWDCMD-pwd}`
1614 # Conditionalize the makefile for this host machine.
1616 for f in ${host_xmake_file}
1618 if test -f ${srcdir}/config/$f
1620 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1624 # Conditionalize the makefile for this target machine.
1626 for f in ${tmake_file}
1628 if test -f ${srcdir}/config/$f
1630 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1633 tmake_file="${tmake_file_}"
1635 out_object_file=`basename $out_file .c`.o
1637 tm_file_list="options.h"
1638 tm_include_list="options.h"
1639 for f in $tm_file; do
1642 f=`echo $f | sed 's/^..//'`
1643 tm_file_list="${tm_file_list} $f"
1644 tm_include_list="${tm_include_list} $f"
1647 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1648 tm_include_list="${tm_include_list} $f"
1651 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1652 tm_include_list="${tm_include_list} config/$f"
1659 for f in $tm_p_file; do
1662 tm_p_file_list="${tm_p_file_list} $f"
1663 tm_p_include_list="${tm_p_include_list} $f"
1666 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1667 tm_p_include_list="${tm_p_include_list} config/$f"
1673 for f in $xm_file; do
1676 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1677 xm_include_list="${xm_include_list} $f"
1680 xm_file_list="${xm_file_list} $f"
1681 xm_include_list="${xm_include_list} $f"
1684 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1685 xm_include_list="${xm_include_list} config/$f"
1691 host_xm_include_list=
1692 for f in $host_xm_file; do
1695 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1696 host_xm_include_list="${host_xm_include_list} $f"
1699 host_xm_file_list="${host_xm_file_list} $f"
1700 host_xm_include_list="${host_xm_include_list} $f"
1703 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1704 host_xm_include_list="${host_xm_include_list} config/$f"
1710 for f in $build_xm_file; do
1713 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1714 build_xm_include_list="${build_xm_include_list} $f"
1716 auto-build.h | auto-host.h )
1717 build_xm_file_list="${build_xm_file_list} $f"
1718 build_xm_include_list="${build_xm_include_list} $f"
1721 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1722 build_xm_include_list="${build_xm_include_list} config/$f"
1727 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1728 # cross-compiler which does not use the native headers and libraries.
1729 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1730 CROSS= AC_SUBST(CROSS)
1731 ALL=all.internal AC_SUBST(ALL)
1732 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1734 if test "x$with_build_sysroot" != x; then
1735 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1737 # This value is used, even on a native system, because
1738 # CROSS_SYSTEM_HEADER_DIR is just
1739 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1740 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1743 if test x$host != x$target
1745 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1747 SYSTEM_HEADER_DIR=$build_system_header_dir
1748 case "$host","$target" in
1749 # Darwin crosses can use the host system's libraries and headers,
1750 # because of the fat library support. Of course, it must be the
1751 # same version of Darwin on both sides. Allow the user to
1752 # just say --target=foo-darwin without a version number to mean
1753 # "the version on this system".
1754 *-*-darwin*,*-*-darwin*)
1755 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1756 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1757 if test $hostos = $targetos -o $targetos = darwin ; then
1759 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1764 i?86-*-*,x86_64-*-* \
1765 | powerpc*-*-*,powerpc64*-*-*)
1766 CROSS="$CROSS -DNATIVE_CROSS" ;;
1768 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1769 SYSTEM_HEADER_DIR=$build_system_header_dir
1772 # If this is a cross-compiler that does not
1773 # have its own set of headers then define
1776 # If this is using newlib, without having the headers available now,
1777 # then define inhibit_libc in LIBGCC2_CFLAGS.
1778 # This prevents libgcc2 from containing any code which requires libc
1780 : ${inhibit_libc=false}
1781 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1782 test x$with_newlib = xyes ; } &&
1783 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1786 AC_SUBST(inhibit_libc)
1788 # When building gcc with a cross-compiler, we need to adjust things so
1789 # that the generator programs are still built with the native compiler.
1790 # Also, we cannot run fixincludes.
1792 # These are the normal (build=host) settings:
1793 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1794 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1795 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1796 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1798 # And these apply if build != host, or we are generating coverage data
1799 if test x$build != x$host || test "x$coverage_flags" != x
1801 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1802 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1805 # Expand extra_headers to include complete path.
1806 # This substitutes for lots of t-* files.
1808 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1809 for file in ${extra_headers} ; do
1810 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1813 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1814 if test x"$use_gcc_tgmath" = xyes
1815 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1818 # Define collect2 in Makefile.
1819 case $host_can_use_collect2 in
1821 *) collect2='collect2$(exeext)' ;;
1823 AC_SUBST([collect2])
1825 # Add a definition of USE_COLLECT2 if system wants one.
1826 case $use_collect2 in
1827 no) use_collect2= ;;
1830 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1831 xm_defines="${xm_defines} USE_COLLECT2"
1832 case $host_can_use_collect2 in
1834 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1840 # ---------------------------
1841 # Assembler & linker features
1842 # ---------------------------
1844 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1845 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1846 # However when ld-new is first executed from the build tree, libtool will
1847 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1848 # to the build tree. While doing this we need to use the previous-stage
1849 # linker, or we have an infinite loop. The presence of a shell script as
1850 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1851 # the gcc/collect-ld script. So we need to know how libtool works, or
1852 # exec-tool will fail.
1854 m4_defun([_LT_CONFIG_COMMANDS], [])
1857 AC_SUBST(enable_fast_install)
1859 # Identify the assembler which will work hand-in-glove with the newly
1860 # built GCC, so that we can examine its features. This is the assembler
1861 # which will be driven by the driver program.
1863 # If build != host, and we aren't building gas in-tree, we identify a
1864 # build->target assembler and hope that it will have the same features
1865 # as the host->target assembler we'll be using.
1866 gcc_cv_gas_major_version=
1867 gcc_cv_gas_minor_version=
1868 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1870 m4_pattern_allow([AS_FOR_TARGET])dnl
1871 AS_VAR_SET_IF(gcc_cv_as,, [
1872 if test -x "$DEFAULT_ASSEMBLER"; then
1873 gcc_cv_as="$DEFAULT_ASSEMBLER"
1874 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1875 && test -f ../gas/Makefile \
1876 && test x$build = x$host; then
1877 gcc_cv_as=../gas/as-new$build_exeext
1878 elif test -x as$build_exeext; then
1879 # Build using assembler in the current directory.
1880 gcc_cv_as=./as$build_exeext
1881 elif test -x $AS_FOR_TARGET; then
1882 gcc_cv_as="$AS_FOR_TARGET"
1884 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1887 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1888 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1889 case "$ORIGINAL_AS_FOR_TARGET" in
1890 ./as | ./as$build_exeext) ;;
1891 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1894 AC_MSG_CHECKING(what assembler to use)
1895 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1896 # Single tree build which includes gas. We want to prefer it
1897 # over whatever linker top-level may have detected, since
1898 # we'll use what we're building after installation anyway.
1899 AC_MSG_RESULT(newly built gas)
1901 _gcc_COMPUTE_GAS_VERSION
1902 in_tree_gas_is_elf=no
1903 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1904 || (grep 'obj_format = multi' ../gas/Makefile \
1905 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1907 in_tree_gas_is_elf=yes
1910 AC_MSG_RESULT($gcc_cv_as)
1914 # Identify the linker which will work hand-in-glove with the newly
1915 # built GCC, so that we can examine its features. This is the linker
1916 # which will be driven by the driver program.
1918 # If build != host, and we aren't building gas in-tree, we identify a
1919 # build->target linker and hope that it will have the same features
1920 # as the host->target linker we'll be using.
1921 gcc_cv_gld_major_version=
1922 gcc_cv_gld_minor_version=
1923 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1924 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1926 AS_VAR_SET_IF(gcc_cv_ld,, [
1927 if test -x "$DEFAULT_LINKER"; then
1928 gcc_cv_ld="$DEFAULT_LINKER"
1929 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1930 && test -f ../ld/Makefile \
1931 && test x$build = x$host; then
1932 gcc_cv_ld=../ld/ld-new$build_exeext
1933 elif test -x collect-ld$build_exeext; then
1934 # Build using linker in the current directory.
1935 gcc_cv_ld=./collect-ld$build_exeext
1936 elif test -x $LD_FOR_TARGET; then
1937 gcc_cv_ld="$LD_FOR_TARGET"
1939 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1942 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1943 PLUGIN_LD=`basename $gcc_cv_ld`
1944 AC_ARG_WITH(plugin-ld,
1945 [ --with-plugin-ld=[[ARG]] specify the plugin linker],
1946 [if test x"$withval" != x; then
1947 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1948 PLUGIN_LD="$withval"
1950 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1951 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1953 # Check to see if we are using gold instead of ld
1954 AC_MSG_CHECKING(whether we are using gold)
1956 if test x$gcc_cv_ld != x; then
1957 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
1958 | grep "GNU gold" > /dev/null; then
1962 AC_MSG_RESULT($ld_is_gold)
1964 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1965 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1966 case "$ORIGINAL_LD_FOR_TARGET" in
1967 ./collect-ld | ./collect-ld$build_exeext) ;;
1968 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1971 AC_MSG_CHECKING(what linker to use)
1972 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1973 # Single tree build which includes ld. We want to prefer it
1974 # over whatever linker top-level may have detected, since
1975 # we'll use what we're building after installation anyway.
1976 AC_MSG_RESULT(newly built ld)
1978 in_tree_ld_is_elf=no
1979 if (grep 'EMUL = .*elf' ../ld/Makefile \
1980 || grep 'EMUL = .*linux' ../ld/Makefile \
1981 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1982 in_tree_ld_is_elf=yes
1984 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
1987 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1988 if test x$gcc_cv_gld_version != x; then
1992 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1993 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1996 AC_MSG_RESULT($gcc_cv_ld)
2000 # Figure out what nm we will be using.
2001 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2002 AS_VAR_SET_IF(gcc_cv_nm,, [
2003 if test -f $gcc_cv_binutils_srcdir/configure.in \
2004 && test -f ../binutils/Makefile \
2005 && test x$build = x$host; then
2006 gcc_cv_nm=../binutils/nm-new$build_exeext
2007 elif test -x nm$build_exeext; then
2008 gcc_cv_nm=./nm$build_exeext
2009 elif test -x $NM_FOR_TARGET; then
2010 gcc_cv_nm="$NM_FOR_TARGET"
2012 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2015 AC_MSG_CHECKING(what nm to use)
2016 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2017 # Single tree build which includes binutils.
2018 AC_MSG_RESULT(newly built nm)
2021 AC_MSG_RESULT($gcc_cv_nm)
2025 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2026 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2027 case "$ORIGINAL_NM_FOR_TARGET" in
2028 ./nm | ./nm$build_exeext) ;;
2029 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2033 # Figure out what objdump we will be using.
2034 AS_VAR_SET_IF(gcc_cv_objdump,, [
2035 if test -f $gcc_cv_binutils_srcdir/configure.in \
2036 && test -f ../binutils/Makefile \
2037 && test x$build = x$host; then
2038 # Single tree build which includes binutils.
2039 gcc_cv_objdump=../binutils/objdump$build_exeext
2040 elif test -x objdump$build_exeext; then
2041 gcc_cv_objdump=./objdump$build_exeext
2042 elif test -x $OBJDUMP_FOR_TARGET; then
2043 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2045 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2048 AC_MSG_CHECKING(what objdump to use)
2049 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2050 # Single tree build which includes binutils.
2051 AC_MSG_RESULT(newly built objdump)
2052 elif test x$gcc_cv_objdump = x; then
2053 AC_MSG_RESULT(not found)
2055 AC_MSG_RESULT($gcc_cv_objdump)
2058 # Figure out what readelf we will be using.
2059 AS_VAR_SET_IF(gcc_cv_readelf,, [
2060 if test -f $gcc_cv_binutils_srcdir/configure.in \
2061 && test -f ../binutils/Makefile \
2062 && test x$build = x$host; then
2063 # Single tree build which includes binutils.
2064 gcc_cv_readelf=../binutils/readelf$build_exeext
2065 elif test -x readelf$build_exeext; then
2066 gcc_cv_readelf=./readelf$build_exeext
2068 AC_PATH_PROG(gcc_cv_readelf, readelf)
2071 AC_MSG_CHECKING(what readelf to use)
2072 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2073 # Single tree build which includes binutils.
2074 AC_MSG_RESULT(newly built readelf)
2075 elif test x$gcc_cv_readelf = x; then
2076 AC_MSG_RESULT(not found)
2078 AC_MSG_RESULT($gcc_cv_readelf)
2081 # Figure out what assembler alignment features are present.
2082 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2086 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2087 [Define if your assembler supports .balign and .p2align.])])
2089 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2092 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2093 [Define if your assembler supports specifying the maximum number
2094 of bytes to skip when using the GAS .p2align command.])])
2096 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2099 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2100 [Define if your assembler supports .literal16.])])
2102 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2104 [conftest_label1: .word 0
2106 conftest_label2: .word 0
2108 [if test x$gcc_cv_nm != x; then
2109 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2110 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2111 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2113 else gcc_cv_as_subsection_m1=yes
2115 rm -f conftest.nm1 conftest.nm2
2117 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2118 [Define if your assembler supports .subsection and .subsection -1 starts
2119 emitting at the beginning of your section.])])
2121 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2124 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2126 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2128 [ .weakref foobar, barfnot],,
2129 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2131 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2134 .NSUBSPA $CODE$,COMDAT],,
2135 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2137 # .hidden needs to be supported in both the assembler and the linker,
2138 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2139 # This is irritatingly difficult to feature test for; we have to check the
2140 # date string after the version number. If we've got an in-tree
2141 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2143 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2144 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2150 if test $in_tree_ld != yes ; then
2151 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2152 if test x"$ld_is_gold" = xyes; then
2153 gcc_cv_ld_hidden=yes
2154 elif echo "$ld_ver" | grep GNU > /dev/null; then
2155 ld_vers=`echo $ld_ver | sed -n \
2156 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2157 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2158 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2159 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2160 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2165 # Solaris 2 ld -V output looks like this for a regular version:
2167 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2169 # but test versions add stuff at the end:
2171 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2173 ld_ver=`$gcc_cv_ld -V 2>&1`
2174 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2175 ld_vers=`echo $ld_ver | sed -n \
2176 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2177 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2178 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2186 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2187 [[if test $in_tree_ld = yes ; then
2189 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2190 && test $in_tree_ld_is_elf = yes; then
2191 gcc_cv_ld_hidden=yes
2194 gcc_cv_ld_hidden=yes
2195 if echo "$ld_ver" | grep GNU > /dev/null; then
2196 if test 0"$ld_date" -lt 20020404; then
2197 if test -n "$ld_date"; then
2198 # If there was date string, but was earlier than 2002-04-04, fail
2200 elif test -z "$ld_vers"; then
2201 # If there was no date string nor ld version number, something is wrong
2204 test -z "$ld_vers_patch" && ld_vers_patch=0
2205 if test "$ld_vers_major" -lt 2; then
2207 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2208 gcc_cv_ld_hidden="no"
2209 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2216 hppa64*-*-hpux* | ia64*-*-hpux*)
2217 gcc_cv_ld_hidden=yes
2219 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2220 gcc_cv_ld_hidden=yes
2228 libgcc_visibility=no
2229 AC_SUBST(libgcc_visibility)
2230 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2231 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2232 libgcc_visibility=yes
2233 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2234 [Define if your assembler and linker support .hidden.])
2237 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2238 gcc_cv_ld_ro_rw_mix=unknown
2239 if test $in_tree_ld = yes ; then
2240 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2241 && test $in_tree_ld_is_elf = yes; then
2242 gcc_cv_ld_ro_rw_mix=read-write
2244 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2245 echo '.section myfoosect, "a"' > conftest1.s
2246 echo '.section myfoosect, "aw"' > conftest2.s
2247 echo '.byte 1' >> conftest2.s
2248 echo '.section myfoosect, "a"' > conftest3.s
2249 echo '.byte 0' >> conftest3.s
2250 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2251 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2252 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2253 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2254 conftest2.o conftest3.o > /dev/null 2>&1; then
2255 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2256 | sed -e '/myfoosect/!d' -e N`
2257 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2258 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2259 gcc_cv_ld_ro_rw_mix=read-only
2261 gcc_cv_ld_ro_rw_mix=read-write
2266 rm -f conftest.* conftest[123].*
2269 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2270 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2271 [Define if your linker links a mix of read-only
2272 and read-write sections into a read-write section.])
2274 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2276 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2277 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2285 [[# GAS versions before 2.11 do not support uleb128,
2286 # despite appearing to.
2287 # ??? There exists an elf-specific test that will crash
2288 # the assembler. Perhaps it's better to figure out whether
2289 # arbitrary sections are supported and try the test.
2290 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2291 if echo "$as_ver" | grep GNU > /dev/null; then
2292 as_vers=`echo $as_ver | sed -n \
2293 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2294 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2295 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2296 if test $as_major -eq 2 && test $as_minor -lt 11
2298 else gcc_cv_as_leb128=yes
2301 [AC_DEFINE(HAVE_AS_LEB128, 1,
2302 [Define if your assembler supports .sleb128 and .uleb128.])])
2304 # Check if we have assembler support for unwind directives.
2305 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2312 .cfi_escape 1, 2, 3, 4, 5
2316 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2317 # read-only and read-write sections, we need to make sure that the
2318 # assembler used emits read-write .eh_frame sections.
2319 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2320 if test "x$gcc_cv_objdump" != x; then
2321 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2322 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2323 gcc_cv_as_cfi_directive=no
2326 i?86-*-solaris2.1[[0-9]]*)
2327 # On Solaris/x86, make sure that GCC and gas agree on using
2328 # read-only .eh_frame sections for 64-bit.
2329 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2330 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2331 sed -e /.eh_frame/!d -e N | \
2332 grep READONLY > /dev/null; then
2333 gcc_cv_as_cfi_directive=yes
2335 gcc_cv_as_cfi_directive=no
2339 gcc_cv_as_cfi_directive=yes
2344 # no objdump, err on the side of caution
2345 gcc_cv_as_cfi_directive=no
2348 gcc_cv_as_cfi_directive=yes
2352 gcc_cv_as_cfi_directive=yes
2355 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_readelf != x; then
2356 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2360 .cfi_adjust_cfa_offset 64
2362 .cfi_adjust_cfa_offset 128
2365 if $gcc_cv_readelf -wf conftest.o 2>/dev/null \
2366 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2367 gcc_cv_as_cfi_advance_working=yes
2371 # no readelf, err on the side of caution
2372 gcc_cv_as_cfi_advance_working=no
2374 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2375 [`if test $gcc_cv_as_cfi_directive = yes \
2376 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2377 [Define 0/1 if your assembler supports CFI directives.])
2379 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2380 gcc_cv_as_cfi_personality_directive, ,,
2383 .cfi_personality 0, symbol
2385 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2386 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2387 then echo 1; else echo 0; fi`],
2388 [Define 0/1 if your assembler supports .cfi_personality.])
2390 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2391 gcc_cv_as_cfi_sections_directive, ,,
2393 .cfi_sections .debug_frame, .eh_frame
2396 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2397 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2398 then echo 1; else echo 0; fi`],
2399 [Define 0/1 if your assembler supports .cfi_sections.])
2401 # GAS versions up to and including 2.11.0 may mis-optimize
2403 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2411 .section .eh_frame,"aw",@progbits
2413 .4byte .LECIE1-.LSCIE1
2427 .4byte .LEFDE1-.LASFDE1
2429 .4byte .LASFDE1-__FRAME_BEGIN__
2437 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2438 cat > conftest.lit <<EOF
2439 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2440 0010 01000000 12000000 18000000 00000000 ................
2441 0020 08000000 04080000 0044 .........D @&t@
2443 cat > conftest.big <<EOF
2444 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2445 0010 00000001 00000012 00000018 00000000 ................
2446 0020 00000008 04000000 0844 .........D @&t@
2448 # If the assembler didn't choke, and we can objdump,
2449 # and we got the correct data, then succeed.
2450 # The text in the here-document typically retains its unix-style line
2451 # endings, while the output of objdump will use host line endings.
2452 # Therefore, use diff -b for the comparisons.
2453 if test x$gcc_cv_objdump != x \
2454 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2455 | tail -3 > conftest.got \
2456 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2457 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2459 gcc_cv_as_eh_frame=yes
2460 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2461 gcc_cv_as_eh_frame=buggy
2463 # Uh oh, what do we do now?
2464 gcc_cv_as_eh_frame=no
2467 if test $gcc_cv_as_eh_frame = buggy; then
2468 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2469 [Define if your assembler mis-optimizes .eh_frame data.])
2472 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2473 [elf,2,12,0], [--fatal-warnings],
2474 [.section .rodata.str, "aMS", @progbits, 1])
2475 if test $gcc_cv_as_shf_merge = no; then
2476 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2477 [elf,2,12,0], [--fatal-warnings],
2478 [.section .rodata.str, "aMS", %progbits, 1])
2480 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2481 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2482 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2484 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2485 [elf,2,16,0], [--fatal-warnings],
2486 [.section .text,"axG",@progbits,.foo,comdat])
2487 if test $gcc_cv_as_comdat_group = yes; then
2488 gcc_cv_as_comdat_group_percent=no
2490 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2491 [elf,2,16,0], [--fatal-warnings],
2492 [.section .text,"axG",%progbits,.foo,comdat])
2494 if test x"$ld_is_gold" = xyes; then
2496 elif test $in_tree_ld = yes ; then
2498 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2499 && test $in_tree_ld_is_elf = yes; then
2502 elif echo "$ld_ver" | grep GNU > /dev/null; then
2504 if test 0"$ld_date" -lt 20050308; then
2505 if test -n "$ld_date"; then
2506 # If there was date string, but was earlier than 2005-03-08, fail
2508 elif test "$ld_vers_major" -lt 2; then
2510 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2517 *-*-solaris2.1[1-9]*)
2518 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2519 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2522 # FIXME: Maybe need to refine later when COMDAT group support with
2523 # Sun as is implemented.
2524 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 1688; then
2531 # Assume linkers other than GNU ld don't support COMDAT group.
2537 # Allow overriding the automatic COMDAT group tests above.
2538 AC_ARG_ENABLE(comdat,
2539 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2540 [comdat_group="$enable_comdat"])
2541 if test $comdat_group = no; then
2542 gcc_cv_as_comdat_group=no
2543 gcc_cv_as_comdat_group_percent=no
2545 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2546 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2547 [Define 0/1 if your assembler and linker support COMDAT groups.])
2549 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2550 gcc_cv_as_discriminator,
2554 .loc 1 1 0 discriminator 1],,
2555 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2556 [Define if your assembler supports the .loc discriminator sub-directive.])])
2558 # Thread-local storage - the check is heavily parameterized.
2567 .section ".tdata","awT",@progbits
2570 ldq $27,__tls_get_addr($29) !literal!1
2571 lda $16,foo($29) !tlsgd!1
2572 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2573 ldq $27,__tls_get_addr($29) !literal!2
2574 lda $16,foo($29) !tlsldm!2
2575 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2576 ldq $1,foo($29) !gotdtprel
2577 ldah $2,foo($29) !dtprelhi
2578 lda $3,foo($2) !dtprello
2579 lda $4,foo($29) !dtprel
2580 ldq $1,foo($29) !gottprel
2581 ldah $2,foo($29) !tprelhi
2582 lda $3,foo($2) !tprello
2583 lda $4,foo($29) !tprel'
2586 tls_as_opt=--fatal-warnings
2588 cris-*-*|crisv32-*-*)
2590 .section ".tdata","awT",@progbits
2597 tls_as_opt=--fatal-warnings
2601 .section ".tdata","awT",@progbits
2613 .section ".tdata","awT",@progbits
2617 addil LT%foo-$tls_gdidx$,gp
2618 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2621 addil LT%foo-$tls_ldidx$,gp
2623 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2624 addil LR%foo-$tls_dtpoff$,%ret0
2625 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2627 addil LT%foo-$tls_ieoff$,gp
2628 ldw RT%foo-$tls_ieoff$(%r1),%t2
2631 addil LR%foo-$tls_leoff$,%t1
2632 ldo RR%foo-$tls_leoff$(%r1),%t2'
2635 tls_as_opt=--fatal-warnings
2639 .section ".tdata","awT",%progbits
2652 i[34567]86-*-solaris2.[89]*)
2653 # TLS was introduced in the Solaris 9 4/04 release but
2654 # we do not enable it by default on Solaris 9 either.
2655 if test "x$enable_tls" = xyes ; then
2661 i[34567]86-*-solaris2.*)
2668 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2670 .section .tdata,"awt",@progbits'
2674 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2675 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2679 .section ".tdata","awT",@progbits'
2682 tls_as_opt="--fatal-warnings"
2684 conftest_s="$conftest_s
2688 leal foo@tlsgd(,%ebx,1), %eax
2689 leal foo@tlsldm(%ebx), %eax
2690 leal foo@dtpoff(%eax), %edx
2691 movl foo@gottpoff(%ebx), %eax
2692 subl foo@gottpoff(%ebx), %eax
2693 addl foo@gotntpoff(%ebx), %eax
2694 movl foo@indntpoff, %eax
2695 movl \$foo@tpoff, %eax
2696 subl \$foo@tpoff, %eax
2697 leal foo@ntpoff(%ecx), %eax"
2701 .section ".tdata","awT",@progbits
2705 leaq foo@TLSGD(%rip), %rdi
2706 leaq foo@TLSLD(%rip), %rdi
2707 leaq foo@DTPOFF(%rax), %rdx
2708 movq foo@GOTTPOFF(%rip), %rax
2709 movq $foo@TPOFF, %rax'
2712 tls_as_opt=--fatal-warnings
2716 .section ".tdata","awT",@progbits
2719 addl r16 = @ltoff(@dtpmod(foo#)), gp
2720 addl r17 = @ltoff(@dtprel(foo#)), gp
2721 addl r18 = @ltoff(@tprel(foo#)), gp
2722 addl r19 = @dtprel(foo#), gp
2723 adds r21 = @dtprel(foo#), r13
2724 movl r23 = @dtprel(foo#)
2725 addl r20 = @tprel(foo#), gp
2726 adds r22 = @tprel(foo#), r13
2727 movl r24 = @tprel(foo#)'
2730 tls_as_opt=--fatal-warnings
2734 .section .tdata,"awT",@progbits
2738 addiu $4, $28, %tlsgd(x)
2739 addiu $4, $28, %tlsldm(x)
2740 lui $4, %dtprel_hi(x)
2741 addiu $4, $4, %dtprel_lo(x)
2742 lw $4, %gottprel(x)($28)
2743 lui $4, %tprel_hi(x)
2744 addiu $4, $4, %tprel_lo(x)'
2747 tls_as_opt='-32 --fatal-warnings'
2751 .section .tdata,"awT",@progbits
2756 move.l x@TLSGD(%a5),%a0
2757 move.l x@TLSLDM(%a5),%a0
2758 move.l x@TLSLDO(%a5),%a0
2759 move.l x@TLSIE(%a5),%a0
2760 move.l x@TLSLE(%a5),%a0'
2763 tls_as_opt='--fatal-warnings'
2767 .section ".tdata","awT",@progbits
2775 addi 3,31,ld0@got@tlsgd
2777 addi 3,31,x1@got@tlsld
2780 addis 9,3,x2@dtprel@ha
2781 addi 9,9,x2@dtprel@l
2782 lwz 9,x3@got@tprel(31)
2785 addis 9,2,x2@tprel@ha
2786 addi 9,9,x2@tprel@l'
2789 tls_as_opt="-a32 --fatal-warnings"
2793 .section ".tdata","awT",@progbits
2801 addi 3,2,ld0@got@tlsgd
2807 addi 3,2,x1@got@tlsld
2813 addis 9,3,x2@dtprel@ha
2814 addi 9,9,x2@dtprel@l
2817 ld 9,x3@got@dtprel(2)
2823 tls_as_opt="-a64 --fatal-warnings"
2827 .section ".tdata","awT",@progbits
2836 l %r1,foo@GOTNTPOFF(%r12)
2837 l %r1,0(%r1):tls_load:foo
2838 bas %r14,0(%r1,%r13):tls_gdcall:foo
2839 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2842 tls_as_opt="-m31 --fatal-warnings"
2846 .section ".tdata","awT",@progbits
2854 lg %r1,foo@GOTNTPOFF(%r12)
2855 larl %r1,foo@INDNTPOFF
2856 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2857 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2860 tls_as_opt="-m64 -Aesame --fatal-warnings"
2862 sh-*-* | sh[34]-*-*)
2864 .section ".tdata","awT",@progbits
2874 tls_as_opt=--fatal-warnings
2878 sparc*-sun-solaris2.[89]*)
2879 # TLS was introduced in the Solaris 9 4/04 release but
2880 # we do not enable it by default on Solaris 9 either.
2881 if test "x$enable_tls" = xyes ; then
2887 sparc*-sun-solaris2.*)
2894 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2896 .section ".tdata",#alloc,#write,#tls
2899 sethi %tgd_hi22(foo), %o0
2900 add %o0, %tgd_lo10(foo), %o1
2901 add %l7, %o1, %o0, %tgd_add(foo)
2902 call __tls_get_addr, %tgd_call(foo)
2903 sethi %tldm_hi22(foo), %l1
2904 add %l1, %tldm_lo10(foo), %l2
2905 add %l7, %l2, %o0, %tldm_add(foo)
2906 call __tls_get_addr, %tldm_call(foo)
2907 sethi %tldo_hix22(foo), %l3
2908 xor %l3, %tldo_lox10(foo), %l4
2909 add %o0, %l4, %l5, %tldo_add(foo)
2910 sethi %tie_hi22(foo), %o3
2911 add %o3, %tie_lo10(foo), %o3
2912 ld [%l7 + %o3], %o2, %tie_ld(foo)
2913 add %g7, %o2, %o4, %tie_add(foo)
2914 sethi %tle_hix22(foo), %l1
2915 xor %l1, %tle_lox10(foo), %o5
2916 ld [%g7 + %o5], %o1'
2921 .section ".tdata","awT",@progbits
2924 sethi %tgd_hi22(foo), %o0
2925 add %o0, %tgd_lo10(foo), %o1
2926 add %l7, %o1, %o0, %tgd_add(foo)
2927 call __tls_get_addr, %tgd_call(foo)
2928 sethi %tldm_hi22(foo), %l1
2929 add %l1, %tldm_lo10(foo), %l2
2930 add %l7, %l2, %o0, %tldm_add(foo)
2931 call __tls_get_addr, %tldm_call(foo)
2932 sethi %tldo_hix22(foo), %l3
2933 xor %l3, %tldo_lox10(foo), %l4
2934 add %o0, %l4, %l5, %tldo_add(foo)
2935 sethi %tie_hi22(foo), %o3
2936 add %o3, %tie_lo10(foo), %o3
2937 ld [%l7 + %o3], %o2, %tie_ld(foo)
2938 add %g7, %o2, %o4, %tie_add(foo)
2939 sethi %tle_hix22(foo), %l1
2940 xor %l1, %tle_lox10(foo), %o5
2941 ld [%g7 + %o5], %o1'
2944 tls_as_opt="-32 --fatal-warnings"
2949 .section ".tdata","awT",@progbits
2952 movi a8, foo@TLSFUNC
2953 movi a10, foo@TLSARG
2954 callx8.tls a8, foo@TLSCALL'
2961 if test "x$enable_tls" = xno ; then
2962 : # TLS explicitly disabled.
2963 elif test "x$enable_tls" = xyes ; then
2964 set_have_as_tls=yes # TLS explicitly enabled.
2965 elif test -z "$tls_first_major"; then
2966 : # If we don't have a check, assume no support.
2968 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2969 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2970 [set_have_as_tls=yes])
2972 if test $set_have_as_tls = yes ; then
2973 AC_DEFINE(HAVE_AS_TLS, 1,
2974 [Define if your assembler supports thread-local storage.])
2977 # Target-specific assembler checks.
2979 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2980 gcc_cv_ld_static_dynamic=no
2981 if test $in_tree_ld = yes ; then
2982 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
2983 gcc_cv_ld_static_dynamic=yes
2985 elif test x$gcc_cv_ld != x; then
2986 # Check if linker supports -Bstatic/-Bdynamic option
2987 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2988 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2989 gcc_cv_ld_static_dynamic=yes
2992 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2993 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2994 [Define if your linker supports -Bstatic/-Bdynamic option.])
2996 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2998 if test x"$demangler_in_ld" = xyes; then
2999 AC_MSG_CHECKING(linker --demangle support)
3000 gcc_cv_ld_demangle=no
3001 if test $in_tree_ld = yes; then
3002 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3003 gcc_cv_ld_demangle=yes
3005 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3006 # Check if the GNU linker supports --demangle option
3007 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3008 gcc_cv_ld_demangle=yes
3011 if test x"$gcc_cv_ld_demangle" = xyes; then
3012 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3013 [Define if your linker supports --demangle option.])
3015 AC_MSG_RESULT($gcc_cv_ld_demangle)
3019 # All TARGET_ABI_OSF targets.
3020 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3021 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3022 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3025 extbl $3, $2, $3 !lituse_bytoff!1
3026 ldq $2, a($29) !literal!1
3027 ldq $4, b($29) !literal!2
3028 ldq_u $3, 0($2) !lituse_base!1
3029 ldq $27, f($29) !literal!5
3030 jsr $26, ($27), f !lituse_jsr!5
3031 ldah $29, 0($26) !gpdisp!3
3032 lda $0, c($29) !gprel
3033 ldah $1, d($29) !gprelhigh
3034 lda $1, d($1) !gprellow
3035 lda $29, 0($29) !gpdisp!3],,
3036 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3037 [Define if your assembler supports explicit relocations.])])
3038 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3039 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3042 ldq $27, a($29) !literal!1
3043 jsr $26, ($27), a !lituse_jsrdirect!1],,
3044 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3045 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3049 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3050 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3051 [-no-mul-bug-abort], [.text],,
3052 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3053 [Define if your assembler supports the -no-mul-bug-abort option.])])
3057 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3058 [.register %g2, #scratch],,
3059 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3060 [Define if your assembler supports .register.])])
3062 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3064 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3065 [Define if your assembler supports -relax option.])])
3067 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3068 gcc_cv_as_sparc_gotdata_op,,
3074 sethi %gdop_hix22(foo), %g1
3075 xor %g1, %gdop_lox10(foo), %g1
3076 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3077 [if test x$gcc_cv_ld != x \
3078 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3079 if $gcc_cv_ld -v | grep GNU >/dev/null 2>&1; then
3080 if test x$gcc_cv_objdump != x; then
3081 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3082 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3083 gcc_cv_as_sparc_gotdata_op=no
3085 gcc_cv_as_sparc_gotdata_op=yes
3089 gcc_cv_as_sparc_gotdata_op=yes
3093 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3094 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3096 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3097 gcc_cv_as_sparc_ua_pcrel,,
3105 .uaword %r_disp32(foo)],
3106 [if test x$gcc_cv_ld != x \
3107 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3108 gcc_cv_as_sparc_ua_pcrel=yes
3111 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3112 [Define if your assembler and linker support unaligned PC relative relocs.])
3114 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3115 gcc_cv_as_sparc_ua_pcrel_hidden,,
3120 .uaword %r_disp32(foo)
3121 .byte 0x32, 0x33, 0x34
3126 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3127 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3128 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3129 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3130 if $gcc_cv_objdump -R conftest 2> /dev/null \
3131 | grep 'DISP32' > /dev/null 2>&1; then
3134 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3138 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3139 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3140 ]) # unaligned pcrel relocs
3142 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3143 gcc_cv_as_sparc_offsetable_lo10,,
3146 or %g1, %lo(ab) + 12, %g1
3147 or %g1, %lo(ab + 12), %g1],
3148 [if test x$gcc_cv_objdump != x \
3149 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3150 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3151 gcc_cv_as_sparc_offsetable_lo10=yes
3153 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3154 [Define if your assembler supports offsetable %lo().])])
3158 i[34567]86-*-* | x86_64-*-*)
3162 # Full C++ conformance when using a shared libstdc++-v3 requires some
3163 # support from the Cygwin DLL, which in more recent versions exports
3164 # wrappers to aid in interposing and redirecting operators new, delete,
3165 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3166 # are configuring for a version of Cygwin that exports the wrappers.
3167 if test x$host = x$target; then
3168 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3170 # Can't check presence of libc functions during cross-compile, so
3171 # we just have to assume we're building for an up-to-date target.
3172 gcc_ac_cygwin_dll_wrappers=yes
3174 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3175 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3176 [Define if you want to generate code by default that assumes that the
3177 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3180 cygwin* | pe | mingw32*)
3181 # Recent binutils allows the three-operand form of ".comm" on PE. This
3182 # definition is used unconditionally to initialise the default state of
3183 # the target option variable that governs usage of the feature.
3184 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3185 [2,19,52],,[.comm foo,1,32])
3186 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3187 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3188 [Define if your assembler supports specifying the alignment
3189 of objects allocated using the GAS .comm command.])
3190 # Used for DWARF 2 in PE
3191 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3192 gcc_cv_as_ix86_pe_secrel32,
3198 [if test x$gcc_cv_ld != x \
3199 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3200 gcc_cv_as_ix86_pe_secrel32=yes
3203 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3204 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3208 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3209 gcc_cv_as_ix86_filds,,,
3210 [filds mem; fists mem],,
3211 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3212 [Define if your assembler uses filds and fists mnemonics.])])
3214 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3215 gcc_cv_as_ix86_fildq,,,
3216 [fildq mem; fistpq mem],,
3217 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3218 [Define if your assembler uses fildq and fistq mnemonics.])])
3220 gcc_GAS_CHECK_FEATURE([cmov syntax],
3221 gcc_cv_as_ix86_cmov_sun_syntax,,,
3222 [cmovl.l %edx, %eax],,
3223 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3224 [Define if your assembler supports the Sun syntax for cmov.])])
3226 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3227 gcc_cv_as_ix86_ffreep,,,
3229 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3230 [Define if your assembler supports the ffreep mnemonic.])])
3232 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3233 gcc_cv_as_ix86_sahf,,,
3235 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3236 [Define if your assembler supports the sahf mnemonic.])])
3238 gcc_GAS_CHECK_FEATURE([swap suffix],
3239 gcc_cv_as_ix86_swap,,,
3240 [movl.s %esp, %ebp],,
3241 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3242 [Define if your assembler supports the swap suffix.])])
3244 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3245 gcc_cv_as_ix86_diff_sect_delta,,,
3253 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3254 [Define if your assembler supports the subtraction of symbols in different sections.])])
3256 # This one is used unconditionally by i386.[ch]; it is to be defined
3257 # to 1 if the feature is present, 0 otherwise.
3258 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3259 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3265 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3266 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3267 [Define true if the assembler supports '.long foo@GOTOFF'.])
3271 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3272 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3274 addl r15 = @ltoffx(x#), gp
3276 ld8.mov r16 = [[r15]], x#],,
3277 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3278 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3284 *-*-aix*) conftest_s=' .machine "pwr5"
3288 gcc_GAS_CHECK_FEATURE([.machine directive support],
3289 gcc_cv_as_machine_directive,,,
3290 [ .machine ppc7400])
3291 if test x$gcc_cv_as_machine_directive != xyes; then
3292 echo "*** This target requires an assembler supporting \".machine\"" >&2
3293 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3294 test x$build = x$target && exit 1
3298 *) conftest_s=' .machine power4
3303 gcc_GAS_CHECK_FEATURE([mfcr field support],
3304 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3306 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3307 [Define if your assembler supports mfcr field.])])
3310 *-*-aix*) conftest_s=' .machine "pwr5"
3313 *) conftest_s=' .machine power5
3318 gcc_GAS_CHECK_FEATURE([popcntb support],
3319 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3321 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3322 [Define if your assembler supports popcntb field.])])
3325 *-*-aix*) conftest_s=' .machine "pwr5x"
3328 *) conftest_s=' .machine power5
3333 gcc_GAS_CHECK_FEATURE([fp round support],
3334 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3336 [AC_DEFINE(HAVE_AS_FPRND, 1,
3337 [Define if your assembler supports fprnd.])])
3340 *-*-aix*) conftest_s=' .machine "pwr6"
3343 *) conftest_s=' .machine power6
3348 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3349 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3351 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3352 [Define if your assembler supports mffgpr and mftgpr.])])
3355 *-*-aix*) conftest_s=' .csect .text[[PR]]
3357 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3361 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3362 *) conftest_s=' .text
3364 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3367 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3368 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3370 [AC_DEFINE(HAVE_AS_REL16, 1,
3371 [Define if your assembler supports R_PPC_REL16 relocs.])])
3374 *-*-aix*) conftest_s=' .machine "pwr6"
3377 *) conftest_s=' .machine power6
3382 gcc_GAS_CHECK_FEATURE([compare bytes support],
3383 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3385 [AC_DEFINE(HAVE_AS_CMPB, 1,
3386 [Define if your assembler supports cmpb.])])
3389 *-*-aix*) conftest_s=' .machine "pwr6"
3392 *) conftest_s=' .machine power6
3397 gcc_GAS_CHECK_FEATURE([decimal float support],
3398 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3400 [AC_DEFINE(HAVE_AS_DFP, 1,
3401 [Define if your assembler supports DFP instructions.])])
3404 *-*-aix*) conftest_s=' .machine "pwr7"
3407 *) conftest_s=' .machine power7
3412 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3413 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3415 [AC_DEFINE(HAVE_AS_VSX, 1,
3416 [Define if your assembler supports VSX instructions.])])
3419 *-*-aix*) conftest_s=' .machine "pwr7"
3422 *) conftest_s=' .machine power7
3427 gcc_GAS_CHECK_FEATURE([popcntd support],
3428 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3430 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3431 [Define if your assembler supports POPCNTD instructions.])])
3434 *-*-aix*) conftest_s=' .csect .text[[PR]]
3436 *) conftest_s=' .text
3440 gcc_GAS_CHECK_FEATURE([lwsync support],
3441 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3443 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3444 [Define if your assembler supports LWSYNC instructions.])])
3447 *-*-aix*) conftest_s=' .machine "476"
3450 *) conftest_s=' .machine "476"
3455 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3456 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3458 [AC_DEFINE(HAVE_AS_DCI, 1,
3459 [Define if your assembler supports the DCI/ICI instructions.])])
3461 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3462 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3463 [.gnu_attribute 4,1],,
3464 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3465 [Define if your assembler supports .gnu_attribute.])])
3467 gcc_GAS_CHECK_FEATURE([tls marker support],
3468 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3469 [ bl __tls_get_addr(x@tlsgd)],,
3470 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3471 [Define if your assembler supports arg info for __tls_get_addr.])])
3475 gcc_GAS_CHECK_FEATURE([.ref support],
3476 gcc_cv_as_aix_ref, [2.21.0],,
3477 [ .csect stuff[[rw]]
3483 [AC_DEFINE(HAVE_AS_REF, 1,
3484 [Define if your assembler supports .ref])])
3490 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3491 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3492 [ lw $4,%gp_rel(foo)($4)],,
3493 [if test x$target_cpu_default = x
3494 then target_cpu_default=MASK_EXPLICIT_RELOCS
3495 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3497 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3498 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3499 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3500 [Define if the assembler understands -mno-shared.])])
3502 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3503 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3504 [.gnu_attribute 4,1],,
3505 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3506 [Define if your assembler supports .gnu_attribute.])])
3508 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3509 gcc_cv_as_mips_dtprelword, [2,18,0],,
3510 [.section .tdata,"awT",@progbits
3514 .dtprelword x+0x8000],,
3515 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3516 [Define if your assembler supports .dtprelword.])])
3518 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3519 gcc_cv_as_ld_jalr_reloc=no
3520 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3521 if test $in_tree_ld = yes ; then
3522 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3523 && test $in_tree_ld_is_elf = yes; then
3524 gcc_cv_as_ld_jalr_reloc=yes
3526 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3527 echo ' .ent x' > conftest.s
3528 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3529 echo ' ld $25,%call16(y)($28)' >> conftest.s
3530 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3531 echo '1: jalr $25' >> conftest.s
3532 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3533 echo '1: jalr $25' >> conftest.s
3534 echo ' .end x' >> conftest.s
3535 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3536 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3537 if $gcc_cv_objdump -d conftest.so | grep -q jalr \
3538 && $gcc_cv_objdump -d conftest.so | grep -q "bal.*<x>"; then
3539 gcc_cv_as_ld_jalr_reloc=yes
3545 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3546 if test x$target_cpu_default = x; then
3547 target_cpu_default=MASK_RELAX_PIC_CALLS
3549 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3552 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3554 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3555 [gcc_cv_ld_mips_personality_relaxation],
3556 [gcc_cv_ld_mips_personality_relaxation=no
3557 if test $in_tree_ld = yes ; then
3558 if test "$gcc_cv_gld_major_version" -eq 2 \
3559 -a "$gcc_cv_gld_minor_version" -ge 21 \
3560 -o "$gcc_cv_gld_major_version" -gt 2; then
3561 gcc_cv_ld_mips_personality_relaxation=yes
3563 elif test x$gcc_cv_as != x \
3564 -a x$gcc_cv_ld != x \
3565 -a x$gcc_cv_readelf != x ; then
3566 cat > conftest.s <<EOF
3568 .cfi_personality 0x80,indirect_ptr
3575 .section .data,"aw",@progbits
3579 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3580 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3581 if $gcc_cv_readelf -d conftest 2>&1 \
3582 | grep TEXTREL > /dev/null 2>&1; then
3584 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3585 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3588 gcc_cv_ld_mips_personality_relaxation=yes
3592 rm -f conftest.s conftest.o conftest])
3593 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3594 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3595 [Define if your linker can relax absolute .eh_frame personality
3596 pointers into PC-relative form.])
3601 # Mips and HP-UX need the GNU assembler.
3602 # Linux on IA64 might be able to use the Intel assembler.
3605 mips*-*-* | *-*-hpux* )
3606 if test x$gas_flag = xyes \
3607 || test x"$host" != x"$build" \
3608 || test ! -x "$gcc_cv_as" \
3609 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3612 echo "*** This configuration requires the GNU assembler" >&2
3618 # ??? Not all targets support dwarf2 debug_line, even within a version
3619 # of gas. Moreover, we need to emit a valid instruction to trigger any
3620 # info to the output file. So, as supported targets are added to gas 2.11,
3621 # add some instruction here to (also) show we expect this might work.
3622 # ??? Once 2.11 is released, probably need to add first known working
3623 # version to the per-target configury.
3625 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3626 | x86_64*-*-* | hppa*-*-* | arm*-*-* \
3627 | xstormy16*-*-* | cris-*-* | crisv32-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \
3628 | spu-*-* | fido*-*-* | m32c-*-*)
3631 ia64*-*-* | s390*-*-*)
3638 if test x"$insn" != x; then
3640 .file 1 \"conftest.s\"
3643 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3644 gcc_cv_as_dwarf2_debug_line,
3645 [elf,2,11,0],, [$conftest_s],
3646 [if test x$gcc_cv_objdump != x \
3647 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3648 | grep debug_line > /dev/null 2>&1; then
3649 gcc_cv_as_dwarf2_debug_line=yes
3652 # The .debug_line file table must be in the exact order that
3653 # we specified the files, since these indices are also used
3654 # by DW_AT_decl_file. Approximate this test by testing if
3655 # the assembler bitches if the same index is assigned twice.
3656 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3657 gcc_cv_as_dwarf2_file_buggy,,,
3661 if test $gcc_cv_as_dwarf2_debug_line = yes \
3662 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3663 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3664 [Define if your assembler supports dwarf2 .file/.loc directives,
3665 and preserves file table indices exactly as given.])
3668 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3669 gcc_cv_as_gdwarf2_flag,
3670 [elf,2,11,0], [--gdwarf2], [$insn],,
3671 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3672 [Define if your assembler supports the --gdwarf2 option.])])
3674 gcc_GAS_CHECK_FEATURE([--gstabs option],
3675 gcc_cv_as_gstabs_flag,
3676 [elf,2,11,0], [--gstabs], [$insn],
3677 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3678 # and warns about it, but still exits successfully. So check for
3680 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3682 else gcc_cv_as_gstabs_flag=yes
3684 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3685 [Define if your assembler supports the --gstabs option.])])
3687 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3688 gcc_cv_as_debug_prefix_map_flag,
3689 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3690 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3691 [Define if your assembler supports the --debug-prefix-map option.])])
3694 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3697 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3698 [Define if your assembler supports .lcomm with an alignment field.])])
3700 AC_ARG_ENABLE(gnu-unique-object,
3701 [ --enable-gnu-unique-object enable the use of the @gnu_unique_object ELF extension on
3703 [case $enable_gnu_unique_object in
3705 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
3706 Valid choices are 'yes' and 'no'.]) ;;
3708 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
3710 [.type foo, @gnu_unique_object],,
3711 # Also check for ld.so support, i.e. glibc 2.11 or higher.
3712 [[if test x$host = x$build -a x$host = x$target &&
3713 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
3714 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
3715 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
3716 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
3717 if test "$glibcnum" -ge 2011 ; then
3718 enable_gnu_unique_object=yes
3721 if test x$enable_gnu_unique_object = xyes; then
3722 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
3723 [Define if your assembler supports @gnu_unique_object.])
3726 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3727 [gcc_cv_as_line_zero],
3728 [gcc_cv_as_line_zero=no
3729 if test $in_tree_gas = yes; then
3730 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3731 elif test "x$gcc_cv_as" != x; then
3732 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3733 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3734 test "x`cat conftest.out`" = x
3736 gcc_cv_as_line_zero=yes
3738 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3739 cat conftest.s >&AS_MESSAGE_LOG_FD
3740 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3741 cat conftest.out >&AS_MESSAGE_LOG_FD
3743 rm -f conftest.o conftest.s conftest.out
3745 if test "x$gcc_cv_as_line_zero" = xyes; then
3746 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3747 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3750 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3751 gcc_cv_ld_eh_frame_hdr=no
3752 if test $in_tree_ld = yes ; then
3753 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3754 && test $in_tree_ld_is_elf = yes; then
3755 gcc_cv_ld_eh_frame_hdr=yes
3757 elif test x$gcc_cv_ld != x; then
3758 # Check if linker supports --eh-frame-hdr option
3759 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3760 gcc_cv_ld_eh_frame_hdr=yes
3763 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3764 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3765 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3766 [Define if your linker supports --eh-frame-hdr option.])
3768 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3770 AC_MSG_CHECKING(linker position independent executable support)
3772 if test $in_tree_ld = yes ; then
3773 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3774 && test $in_tree_ld_is_elf = yes; then
3777 elif test x$gcc_cv_ld != x; then
3778 # Check if linker supports -pie option
3779 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3783 if test x"$gcc_cv_ld_pie" = xyes; then
3784 AC_DEFINE(HAVE_LD_PIE, 1,
3785 [Define if your linker supports -pie option.])
3787 AC_MSG_RESULT($gcc_cv_ld_pie)
3789 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3790 gcc_cv_ld_eh_gc_sections=no
3791 if test $in_tree_ld = yes ; then
3792 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3793 && test $in_tree_ld_is_elf = yes; then
3794 gcc_cv_ld_eh_gc_sections=yes
3796 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3797 cat > conftest.s <<EOF
3800 .type _start, @function
3803 .size _start, .-_start
3804 .section .text.foo,"ax",@progbits
3805 .type foo, @function
3809 .section .gcc_except_table.foo,"a",@progbits
3812 .section .eh_frame,"a",@progbits
3815 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3816 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3817 | grep "gc-sections option ignored" > /dev/null; then
3818 gcc_cv_ld_eh_gc_sections=no
3819 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3820 gcc_cv_ld_eh_gc_sections=yes
3821 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3822 if test x$gcc_cv_as_comdat_group != xyes; then
3823 gcc_cv_ld_eh_gc_sections=no
3824 cat > conftest.s <<EOF
3827 .type _start, @function
3830 .size _start, .-_start
3831 .section .gnu.linkonce.t.foo,"ax",@progbits
3832 .type foo, @function
3836 .section .gcc_except_table.foo,"a",@progbits
3839 .section .eh_frame,"a",@progbits
3842 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3843 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3844 | grep "gc-sections option ignored" > /dev/null; then
3845 gcc_cv_ld_eh_gc_sections=no
3846 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3847 gcc_cv_ld_eh_gc_sections=yes
3853 rm -f conftest.s conftest.o conftest
3857 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3858 gcc_cv_ld_eh_gc_sections=no
3861 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3862 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3863 [Define if your linker supports garbage collection of
3864 sections in presence of EH frames.])
3866 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3872 AC_CACHE_CHECK(linker --as-needed support,
3873 gcc_cv_ld_as_needed,
3874 [gcc_cv_ld_as_needed=no
3875 if test $in_tree_ld = yes ; then
3876 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3877 && test $in_tree_ld_is_elf = yes; then
3878 gcc_cv_ld_as_needed=yes
3880 elif test x$gcc_cv_ld != x; then
3881 # Check if linker supports --as-needed and --no-as-needed options
3882 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3883 gcc_cv_ld_as_needed=yes
3887 if test x"$gcc_cv_ld_as_needed" = xyes; then
3888 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3889 [Define if your linker supports --as-needed and --no-as-needed options.])
3892 case "$target:$tm_file" in
3893 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3894 AC_CACHE_CHECK(linker support for omitting dot symbols,
3895 gcc_cv_ld_no_dot_syms,
3896 [gcc_cv_ld_no_dot_syms=no
3897 if test $in_tree_ld = yes ; then
3898 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3899 gcc_cv_ld_no_dot_syms=yes
3901 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3902 cat > conftest1.s <<EOF
3906 cat > conftest2.s <<EOF
3907 .section ".opd","aw"
3912 .quad .LEfoo,.TOC.@tocbase,0
3918 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3919 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3920 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3921 gcc_cv_ld_no_dot_syms=yes
3923 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3926 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3927 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3928 [Define if your PowerPC64 linker only needs function descriptor syms.])
3933 AC_CACHE_CHECK(linker --build-id support,
3935 [gcc_cv_ld_buildid=no
3936 if test $in_tree_ld = yes ; then
3937 if test "$gcc_cv_gld_major_version" -eq 2 -a \
3938 "$gcc_cv_gld_minor_version" -ge 18 -o \
3939 "$gcc_cv_gld_major_version" -gt 2 \
3940 && test $in_tree_ld_is_elf = yes; then
3941 gcc_cv_ld_buildid=yes
3943 elif test x$gcc_cv_ld != x; then
3944 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
3945 gcc_cv_ld_buildid=yes
3948 if test x"$gcc_cv_ld_buildid" = xyes; then
3949 AC_DEFINE(HAVE_LD_BUILDID, 1,
3950 [Define if your linker supports --build-id.])
3953 AC_ARG_ENABLE(linker-build-id,
3954 [ --enable-linker-build-id
3955 compiler will always pass --build-id to linker],
3957 enable_linker_build_id=no)
3959 if test x"$enable_linker_build_id" = xyes; then
3960 if test x"$gcc_cv_ld_buildid" = xyes; then
3961 AC_DEFINE(ENABLE_LD_BUILDID, 1,
3962 [Define if gcc should always pass --build-id to linker.])
3964 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
3968 AC_CACHE_CHECK(linker --sysroot support,
3970 [gcc_cv_ld_sysroot=no
3971 if test $in_tree_ld = yes ; then
3972 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3973 gcc_cv_ld_sysroot=yes
3975 elif test x$gcc_cv_ld != x; then
3976 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3977 gcc_cv_ld_sysroot=yes
3980 if test x"$gcc_cv_ld_sysroot" = xyes; then
3981 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3982 [Define if your linker supports --sysroot.])
3985 if test x$with_sysroot = x && test x$host = x$target \
3986 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3987 && test "$prefix" != "NONE"; then
3988 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3989 [Define to PREFIX/include if cpp should also search that directory.])
3992 # Test for stack protector support in target C library.
3993 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3994 gcc_cv_libc_provides_ssp,
3995 [gcc_cv_libc_provides_ssp=no
3997 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
3998 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3999 if test "x$with_headers" != x; then
4000 glibc_header_dir=$with_headers
4001 elif test "x$with_sysroot" = x; then
4002 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4003 elif test "x$with_build_sysroot" != "x"; then
4004 glibc_header_dir="${with_build_sysroot}/usr/include"
4005 elif test "x$with_sysroot" = xyes; then
4006 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4008 glibc_header_dir="${with_sysroot}/usr/include"
4011 glibc_header_dir=/usr/include
4013 [# glibc 2.4 and later provides __stack_chk_fail and
4014 # either __stack_chk_guard, or TLS access to stack guard canary.
4015 if test -f $glibc_header_dir/features.h \
4016 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4017 $glibc_header_dir/features.h > /dev/null; then
4018 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4019 $glibc_header_dir/features.h > /dev/null; then
4020 gcc_cv_libc_provides_ssp=yes
4021 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4022 $glibc_header_dir/features.h > /dev/null \
4023 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4024 $glibc_header_dir/features.h > /dev/null; then
4025 gcc_cv_libc_provides_ssp=yes
4026 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4027 $glibc_header_dir/features.h > /dev/null && \
4028 test -f $glibc_header_dir/bits/uClibc_config.h && \
4029 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4030 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
4031 gcc_cv_libc_provides_ssp=yes
4036 # Avoid complicated tests (see
4037 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4038 # simply assert that glibc does provide this, which is true for all
4039 # realistically usable GNU/Hurd configurations.
4040 gcc_cv_libc_provides_ssp=yes;;
4041 *-*-darwin* | *-*-freebsd*)
4042 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4043 [echo "no __stack_chk_fail on this target"])
4045 *) gcc_cv_libc_provides_ssp=no ;;
4048 if test x$gcc_cv_libc_provides_ssp = xyes; then
4049 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4050 [Define if your target C library provides stack protector support])
4053 # Check if TFmode long double should be used by default or not.
4054 # Some glibc targets used DFmode long double, but with glibc 2.4
4055 # and later they can use TFmode.
4057 powerpc*-*-linux* | \
4062 AC_ARG_WITH(long-double-128,
4063 [ --with-long-double-128 Use 128-bit long double by default.],
4064 gcc_cv_target_ldbl128="$with_long_double_128",
4065 [[gcc_cv_target_ldbl128=no
4066 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4067 if test "x$with_sysroot" = x; then
4068 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4069 elif test "x$with_build_sysroot" != "x"; then
4070 glibc_header_dir="${with_build_sysroot}/usr/include"
4071 elif test "x$with_sysroot" = xyes; then
4072 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4074 glibc_header_dir="${with_sysroot}/usr/include"
4077 glibc_header_dir=/usr/include
4079 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4080 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4081 && gcc_cv_target_ldbl128=yes
4085 if test x$gcc_cv_target_ldbl128 = xyes; then
4086 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4087 [Define if TFmode long double should be the default])
4090 # Find out what GC implementation we want, or may, use.
4092 [ --with-gc={page,zone} choose the garbage collection mechanism to use
4100 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4103 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4108 echo "Using $GGC for garbage collection."
4110 # Libraries to use on the host. This will normally be set by the top
4111 # level Makefile. Here we simply capture the value for our Makefile.
4112 if test -z "${HOST_LIBS+set}"; then
4117 # Use the system's zlib library.
4119 zlibinc="-I\$(srcdir)/../zlib"
4120 AC_ARG_WITH(system-zlib,
4121 [ --with-system-zlib use installed libz],
4128 dnl Very limited version of automake's enable-maintainer-mode
4130 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4131 dnl maintainer-mode is disabled by default
4132 AC_ARG_ENABLE(maintainer-mode,
4133 [ --enable-maintainer-mode
4134 enable make rules and dependencies not useful
4135 (and sometimes confusing) to the casual installer],
4136 maintainer_mode=$enableval,
4139 AC_MSG_RESULT($maintainer_mode)
4141 if test "$maintainer_mode" = "yes"; then
4152 # Make empty files to contain the specs and options for each language.
4153 # Then add #include lines to for a compiler that has specs and/or options.
4159 # These (without "all_") are set in each config-lang.in.
4160 # `language' must be a single word so is spelled singularly.
4163 all_outputs='Makefile gccbug'
4164 # List of language makefile fragments.
4166 # List of language subdirectory makefiles. Deprecated.
4168 # Additional files for gengtype
4169 all_gtfiles="$target_gtfiles"
4171 # These are the languages that are set in --enable-languages,
4172 # and are available in the GCC tree.
4173 all_selected_languages=
4175 # Add the language fragments.
4176 # Languages are added via two mechanisms. Some information must be
4177 # recorded in makefile variables, these are defined in config-lang.in.
4178 # We accumulate them and plug them into the main Makefile.
4179 # The other mechanism is a set of hooks for each of the main targets
4180 # like `clean', `install', etc.
4182 language_hooks="Make-hooks"
4184 for lang in ${srcdir}/*/config-lang.in
4187 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4189 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4190 if test "x$lang_alias" = x
4192 echo "$lang doesn't set \$language." 1>&2
4195 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4196 subdirs="$subdirs $subdir"
4198 # $gcc_subdir is where the gcc integration files are to be found
4199 # for a language, both for internal compiler purposes (compiler
4200 # sources implementing front-end to GCC tree converters), and for
4201 # build infrastructure purposes (Make-lang.in, etc.)
4203 # This will be <subdir> (relative to $srcdir) if a line like
4204 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4205 # is found in <langdir>/config-lang.in, and will remain <langdir>
4208 # Except for the language alias (fetched above), the regular
4209 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4210 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4211 # only this and the language alias.
4213 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4214 if [ "$gcc_subdir" = "" ]; then
4215 gcc_subdir="$subdir"
4218 case ",$enable_languages," in
4220 all_selected_languages="$all_selected_languages $lang_alias"
4221 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4222 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4234 . ${srcdir}/$gcc_subdir/config-lang.in
4235 if test "x$language" = x
4237 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4242 case ",$enable_languages," in
4245 for i in $subdir_requires; do
4246 test -f "${srcdir}/$i/config-lang.in" && continue
4254 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4255 if test -f $srcdir/$gcc_subdir/lang.opt; then
4256 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4258 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4259 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4261 if test -f ${srcdir}/$gcc_subdir/Makefile.in
4262 then all_lang_makefiles="$gcc_subdir/Makefile"
4264 all_languages="$all_languages $language"
4265 all_compilers="$all_compilers $compilers"
4266 all_outputs="$all_outputs $outputs"
4267 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4268 case ",$enable_languages," in
4270 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4272 AC_SUBST(enable_lto)
4278 # Pick up gtfiles for c
4280 . ${srcdir}/c-config-lang.in
4281 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4284 for language in $all_selected_languages
4286 check_languages="$check_languages check-$language"
4289 # We link each language in with a set of hooks, reached indirectly via
4290 # lang.${target}. Only do so for selected languages.
4294 target_list="all.cross start.encap rest.encap tags \
4295 install-common install-man install-info install-pdf install-html dvi \
4296 pdf html uninstall info man srcextra srcman srcinfo \
4297 mostlyclean clean distclean maintainer-clean install-plugin"
4299 for t in $target_list
4302 for lang in $all_selected_languages
4306 echo "lang.$t: $x" >> Make-hooks
4315 echo "dir ." > .gdbinit
4316 echo "dir ${srcdir}" >> .gdbinit
4317 if test x$gdb_needs_out_file_path = xyes
4319 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4321 if test "x$subdirs" != x; then
4324 echo "dir ${srcdir}/$s" >> .gdbinit
4327 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4329 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4330 AC_SUBST(gcc_tooldir)
4333 # Find a directory in which to install a shared libgcc.
4335 AC_ARG_ENABLE(version-specific-runtime-libs,
4336 [ --enable-version-specific-runtime-libs
4337 specify that runtime libraries should be
4338 installed in a compiler-specific directory])
4340 AC_ARG_WITH(slibdir,
4341 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
4342 slibdir="$with_slibdir",
4343 if test "${enable_version_specific_runtime_libs+set}" = set; then
4344 slibdir='$(libsubdir)'
4345 elif test "$host" != "$target"; then
4346 slibdir='$(build_tooldir)/lib'
4352 # Substitute configuration variables
4355 AC_SUBST(all_compilers)
4356 AC_SUBST(all_gtfiles)
4357 AC_SUBST(all_lang_makefrags)
4358 AC_SUBST(all_lang_makefiles)
4359 AC_SUBST(all_languages)
4360 AC_SUBST(all_selected_languages)
4361 AC_SUBST(build_exeext)
4362 AC_SUBST(build_install_headers_dir)
4363 AC_SUBST(build_xm_file_list)
4364 AC_SUBST(build_xm_include_list)
4365 AC_SUBST(build_xm_defines)
4366 AC_SUBST(build_file_translate)
4367 AC_SUBST(check_languages)
4368 AC_SUBST(cpp_install_dir)
4369 AC_SUBST(xmake_file)
4370 AC_SUBST(tmake_file)
4371 AC_SUBST(TM_ENDIAN_CONFIG)
4372 AC_SUBST(TM_MULTILIB_CONFIG)
4373 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4374 AC_SUBST(extra_gcc_objs)
4375 AC_SUBST(extra_headers_list)
4376 AC_SUBST(extra_objs)
4377 AC_SUBST(extra_parts)
4378 AC_SUBST(extra_passes)
4379 AC_SUBST(extra_programs)
4380 AC_SUBST(float_h_file)
4381 AC_SUBST(gcc_config_arguments)
4382 AC_SUBST(gcc_gxx_include_dir)
4383 AC_SUBST(host_exeext)
4384 AC_SUBST(host_xm_file_list)
4385 AC_SUBST(host_xm_include_list)
4386 AC_SUBST(host_xm_defines)
4387 AC_SUBST(out_host_hook_obj)
4389 AC_SUBST(lang_opt_files)
4390 AC_SUBST(lang_specs_files)
4391 AC_SUBST(lang_tree_files)
4392 AC_SUBST(local_prefix)
4394 AC_SUBST(objc_boehm_gc)
4396 AC_SUBST(out_object_file)
4397 AC_SUBST(thread_file)
4398 AC_SUBST(tm_file_list)
4399 AC_SUBST(tm_include_list)
4400 AC_SUBST(tm_defines)
4401 AC_SUBST(tm_p_file_list)
4402 AC_SUBST(tm_p_include_list)
4403 AC_SUBST(xm_file_list)
4404 AC_SUBST(xm_include_list)
4405 AC_SUBST(xm_defines)
4406 AC_SUBST(use_gcc_stdint)
4407 AC_SUBST(c_target_objs)
4408 AC_SUBST(cxx_target_objs)
4409 AC_SUBST(fortran_target_objs)
4410 AC_SUBST(target_cpu_default)
4412 AC_SUBST_FILE(language_hooks)
4415 if test x${build} = x${host} ; then
4416 if test x${host} = x${target} ; then
4417 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4419 echo "Links are now set up to build a cross-compiler" 1>&2
4420 echo " from ${host} to ${target}." 1>&2
4423 if test x${host} = x${target} ; then
4424 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4425 echo " for ${target}." 1>&2
4427 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4428 echo " from ${host} to ${target}." 1>&2
4432 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4433 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4435 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4436 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4438 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4439 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4440 if test "x${CLOOGLIBS}" != "x" ; then
4441 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4444 AC_ARG_VAR(LIBELFLIBS,[How to link libelf])
4445 AC_ARG_VAR(LIBELFINC,[How to find libelf include files])
4446 if test "x${LIBELFLIBS}" != "x" ; then
4447 AC_DEFINE(HAVE_libelf, 1, [Define if libelf is in use.])
4450 # Check for plugin support
4451 AC_ARG_ENABLE(plugin,
4452 [ --enable-plugin enable plugin support],
4453 enable_plugin=$enableval,
4454 enable_plugin=yes; default_plugin=yes)
4457 if test x"$enable_plugin" = x"yes"; then
4459 AC_MSG_CHECKING([for exported symbols])
4460 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4461 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4462 if $gcc_cv_objdump -T conftest | grep foobar > /dev/null; then
4463 : # No need to use a flag
4465 AC_MSG_CHECKING([for -rdynamic])
4466 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
4467 if $gcc_cv_objdump -T conftest | grep foobar > /dev/null; then
4469 pluginlibs="-rdynamic"
4474 AC_MSG_RESULT([$plugin_rdynamic])
4479 AC_SEARCH_LIBS([dlopen], [dl])
4480 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
4481 pluginlibs="$pluginlibs -ldl"
4485 # Check that we can build shared objects with -fPIC -shared
4486 saved_LDFLAGS="$LDFLAGS"
4487 LDFLAGS="$LDFLAGS -fPIC -shared"
4488 AC_MSG_CHECKING([for -fPIC -shared])
4490 [extern int X;],[return X == 0;],
4491 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
4492 [AC_MSG_RESULT([no]); have_pic_shared=no])
4493 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
4497 LDFLAGS="$saved_LDFLAGS"
4499 # If plugin support had been requested but not available, fail.
4500 if test x"$enable_plugin" = x"no" ; then
4501 if test x"$default_plugin" != x"yes"; then
4503 Building GCC with plugin support requires a host that supports
4504 -fPIC, -shared, -ldl and -rdynamic.])
4509 AC_SUBST(pluginlibs)
4510 AC_SUBST(enable_plugin)
4511 if test x"$enable_plugin" = x"yes"; then
4512 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
4515 # Configure the subdirectories
4516 # AC_CONFIG_SUBDIRS($subdirs)
4518 # Create the Makefile
4519 # and configure language subdirectories
4520 AC_CONFIG_FILES($all_outputs)
4522 AC_CONFIG_COMMANDS([default],
4524 case ${CONFIG_HEADERS} in
4525 *auto-host.h:config.in*)
4528 # Make sure all the subdirs exist.
4529 for d in $subdirs doc build
4531 test -d $d || mkdir $d
4534 [subdirs='$subdirs'])