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, 2011 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 "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [AS_HELP_STRING([--with-local-prefix=DIR],
109 [specifies directory to put local include])],
110 [case "${withval}" in
111 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
113 *) local_prefix=$with_local_prefix ;;
116 # Default local prefix if it is empty
117 if test x$local_prefix = x; then
118 local_prefix=/usr/local
121 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
122 # passed in by the toplevel make and thus we'd get different behavior
123 # depending on where we built the sources.
125 # Specify the g++ header file directory
126 AC_ARG_WITH(gxx-include-dir,
127 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
128 [specifies directory to put g++ header files])],
129 [case "${withval}" in
130 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
132 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
135 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
136 if test x${gcc_gxx_include_dir} = x; then
137 if test x${enable_version_specific_runtime_libs} = xyes; then
138 gcc_gxx_include_dir='${libsubdir}/include/c++'
140 libstdcxx_incdir='include/c++/$(version)'
141 if test x$host != x$target; then
142 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
144 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
148 AC_ARG_WITH(cpp_install_dir,
149 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
150 [install the user visible C preprocessor in DIR
151 (relative to PREFIX) as well as PREFIX/bin])],
152 [if test x$withval = xyes; then
153 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
154 elif test x$withval != xno; then
155 cpp_install_dir=$withval
158 # We would like to our source tree to be readonly. However when releases or
159 # pre-releases are generated, the flex/bison generated files as well as the
160 # various formats of manuals need to be included along with the rest of the
161 # sources. Therefore we have --enable-generated-files-in-srcdir to do
164 AC_MSG_CHECKING([whether to place generated files in the source directory])
165 dnl generated-files-in-srcdir is disabled by default
166 AC_ARG_ENABLE(generated-files-in-srcdir,
167 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
168 [put copies of generated files in source dir
169 intended for creating source tarballs for users
170 without texinfo bison or flex])],
171 generated_files_in_srcdir=$enableval,
172 generated_files_in_srcdir=no)
174 AC_MSG_RESULT($generated_files_in_srcdir)
176 if test "$generated_files_in_srcdir" = "yes"; then
183 # -------------------
184 # Find default linker
185 # -------------------
189 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
190 gnu_ld_flag="$with_gnu_ld",
193 # With pre-defined ld
195 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
196 DEFAULT_LINKER="$with_ld")
197 if test x"${DEFAULT_LINKER+set}" = x"set"; then
198 if test ! -x "$DEFAULT_LINKER"; then
199 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
200 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
203 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
204 [Define to enable the use of a default linker.])
207 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
208 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
210 AC_MSG_CHECKING([whether a default linker was specified])
211 if test x"${DEFAULT_LINKER+set}" = x"set"; then
212 if test x"$gnu_ld_flag" = x"no"; then
213 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
215 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
221 # With demangler in GNU ld
222 AC_ARG_WITH(demangler-in-ld,
223 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
224 demangler_in_ld="$with_demangler_in_ld",
227 # ----------------------
228 # Find default assembler
229 # ----------------------
233 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
234 gas_flag="$with_gnu_as",
238 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
239 DEFAULT_ASSEMBLER="$with_as")
240 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
241 if test ! -x "$DEFAULT_ASSEMBLER"; then
242 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
243 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
246 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
247 [Define to enable the use of a default assembler.])
250 gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
251 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
253 AC_MSG_CHECKING([whether a default assembler was specified])
254 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
255 if test x"$gas_flag" = x"no"; then
256 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
258 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
268 # If a non-executable a.out is present (e.g. created by GNU as above even if
269 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
270 # file, even when creating an executable, so an execution test fails.
271 # Remove possible default executable files to avoid this.
273 # FIXME: This really belongs into AC_PROG_CC and can be removed once
274 # Autoconf includes it.
275 rm -f a.out a.exe b.out
277 # Find the native compiler
281 ACX_PROG_GNAT([-I"$srcdir"/ada])
283 # autoconf is lame and doesn't give us any substitution variable for this.
284 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
285 NO_MINUS_C_MINUS_O=yes
287 OUTPUT_OPTION='-o $@'
289 AC_SUBST(NO_MINUS_C_MINUS_O)
290 AC_SUBST(OUTPUT_OPTION)
292 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
293 # optimizations to be activated explicitly by the toplevel.
296 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
300 # Determine PICFLAG for target gnatlib.
301 GCC_PICFLAG_FOR_TARGET
302 AC_SUBST(PICFLAG_FOR_TARGET)
304 # -------------------------
305 # Check C compiler features
306 # -------------------------
308 AC_USE_SYSTEM_EXTENSIONS
314 # sizeof(char) is 1 by definition.
315 AC_CHECK_SIZEOF(void *)
316 AC_CHECK_SIZEOF(short)
318 AC_CHECK_SIZEOF(long)
319 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
320 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
323 # ---------------------
324 # Warnings and checking
325 # ---------------------
327 # Check $CC warning features (if it's GCC).
328 # We want to use -pedantic, but we don't want warnings about
332 # So, we only use -pedantic if we can disable those warnings.
334 ACX_PROG_CC_WARNING_OPTS(
335 m4_quote(m4_do([-W -Wall -Wwrite-strings -Wcast-qual])), [loose_warn])
336 ACX_PROG_CC_WARNING_OPTS(
337 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
339 ACX_PROG_CC_WARNING_OPTS(
340 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
341 ACX_PROG_CC_WARNING_OPTS(
342 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
343 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
344 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
345 [-Wno-overlength-strings])), [strict_warn])
346 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
348 # The above macros do nothing if the compiler is not GCC. However, the
349 # Makefile has more goo to add other flags, so these variables are used
350 # to enable warnings only for GCC.
353 if test "x$GCC" = "xyes"; then
354 warn_cflags='$(GCC_WARN_CFLAGS)'
355 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
357 AC_SUBST(warn_cflags)
358 AC_SUBST(warn_cxxflags)
360 # Enable expensive internal checks
362 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
366 AC_ARG_ENABLE(checking,
367 [AS_HELP_STRING([[--enable-checking[=LIST]]],
368 [enable expensive run-time checks. With LIST,
369 enable only specific categories of checks.
370 Categories are: yes,no,all,none,release.
371 Flags are: assert,df,fold,gc,gcac,gimple,misc,
372 rtlflag,rtl,runtime,tree,valgrind,types])],
373 [ac_checking_flags="${enableval}"],[
374 # Determine the default checks.
375 if test x$is_release = x ; then
376 ac_checking_flags=yes
378 ac_checking_flags=release
380 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
381 for check in release $ac_checking_flags
384 # these set all the flags to specific states
385 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
386 ac_fold_checking= ; ac_gc_checking=1 ;
387 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
388 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
389 ac_tree_checking=1 ; ac_valgrind_checking= ;
390 ac_types_checking=1 ;;
391 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
392 ac_fold_checking= ; ac_gc_checking= ;
393 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
394 ac_rtlflag_checking= ; ac_runtime_checking= ;
395 ac_tree_checking= ; ac_valgrind_checking= ;
396 ac_types_checking= ;;
397 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
398 ac_fold_checking=1 ; ac_gc_checking=1 ;
399 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
400 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
401 ac_tree_checking=1 ; ac_valgrind_checking= ;
402 ac_types_checking=1 ;;
403 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
404 ac_fold_checking= ; ac_gc_checking= ;
405 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
406 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
407 ac_tree_checking= ; ac_valgrind_checking= ;
408 ac_types_checking= ;;
409 # these enable particular checks
410 assert) ac_assert_checking=1 ;;
411 df) ac_df_checking=1 ;;
412 fold) ac_fold_checking=1 ;;
413 gc) ac_gc_checking=1 ;;
414 gcac) ac_gc_always_collect=1 ;;
415 gimple) ac_gimple_checking=1 ;;
416 misc) ac_checking=1 ;;
417 rtl) ac_rtl_checking=1 ;;
418 rtlflag) ac_rtlflag_checking=1 ;;
419 runtime) ac_runtime_checking=1 ;;
420 tree) ac_tree_checking=1 ;;
421 types) ac_types_checking=1 ;;
422 valgrind) ac_valgrind_checking=1 ;;
423 *) AC_MSG_ERROR(unknown check category $check) ;;
429 if test x$ac_checking != x ; then
430 AC_DEFINE(ENABLE_CHECKING, 1,
431 [Define if you want more run-time sanity checks. This one gets a grab
432 bag of miscellaneous but relatively cheap checks.])
433 nocommon_flag=-fno-common
435 AC_SUBST(nocommon_flag)
436 if test x$ac_df_checking != x ; then
437 AC_DEFINE(ENABLE_DF_CHECKING, 1,
438 [Define if you want more run-time sanity checks for dataflow.])
440 if test x$ac_assert_checking != x ; then
441 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
442 [Define if you want assertions enabled. This is a cheap check.])
444 if test x$ac_gimple_checking != x ; then
445 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
446 [Define if you want operations on GIMPLE (the basic data structure of
447 the high-level optimizers) to be checked for dynamic type safety at
448 runtime. This is moderately expensive.])
450 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
451 if test x$ac_runtime_checking != x ; then
452 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
453 [Define if you want runtime assertions enabled. This is a cheap check.])
455 if test x$ac_tree_checking != x ; then
456 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
457 [Define if you want all operations on trees (the basic data
458 structure of the front ends) to be checked for dynamic type safety
459 at runtime. This is moderately expensive. The tree browser debugging
460 routines will also be enabled by this option.
462 TREEBROWSER=tree-browser.o
464 if test x$ac_types_checking != x ; then
465 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
466 [Define if you want all gimple types to be verified after gimplifiation.
470 AC_SUBST(TREEBROWSER)
471 if test x$ac_rtl_checking != x ; then
472 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
473 [Define if you want all operations on RTL (the basic data structure
474 of the optimizer and back end) to be checked for dynamic type safety
475 at runtime. This is quite expensive.])
477 if test x$ac_rtlflag_checking != x ; then
478 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
479 [Define if you want RTL flag accesses to be checked against the RTL
480 codes that are supported for each access macro. This is relatively
483 if test x$ac_gc_checking != x ; then
484 AC_DEFINE(ENABLE_GC_CHECKING, 1,
485 [Define if you want the garbage collector to do object poisoning and
486 other memory allocation checks. This is quite expensive.])
488 if test x$ac_gc_always_collect != x ; then
489 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
490 [Define if you want the garbage collector to operate in maximally
491 paranoid mode, validating the entire heap and collecting garbage at
492 every opportunity. This is extremely expensive.])
494 if test x$ac_fold_checking != x ; then
495 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
496 [Define if you want fold checked that it never destructs its argument.
497 This is quite expensive.])
499 valgrind_path_defines=
502 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
503 dnl # an if statement. This was the source of very frustrating bugs
504 dnl # in converting to autoconf 2.5x!
505 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
507 if test x$ac_valgrind_checking != x ; then
508 # It is certainly possible that there's valgrind but no valgrind.h.
509 # GCC relies on making annotations so we must have both.
510 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
511 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
512 [[#include <valgrind/memcheck.h>
513 #ifndef VALGRIND_DISCARD
514 #error VALGRIND_DISCARD not defined
516 [gcc_cv_header_valgrind_memcheck_h=yes],
517 [gcc_cv_header_valgrind_memcheck_h=no])
518 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
519 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
520 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
521 [[#include <memcheck.h>
522 #ifndef VALGRIND_DISCARD
523 #error VALGRIND_DISCARD not defined
525 [gcc_cv_header_memcheck_h=yes],
526 [gcc_cv_header_memcheck_h=no])
527 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
528 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
529 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
530 if test "x$valgrind_path" = "x" \
531 || (test $have_valgrind_h = no \
532 && test $gcc_cv_header_memcheck_h = no \
533 && test $gcc_cv_header_valgrind_memcheck_h = no); then
534 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
536 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
537 valgrind_command="$valgrind_path -q"
538 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
539 [Define if you want to run subprograms and generated programs
540 through valgrind (a memory checker). This is extremely expensive.])
541 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
542 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
543 [Define if valgrind's valgrind/memcheck.h header is installed.])
545 if test $gcc_cv_header_memcheck_h = yes; then
546 AC_DEFINE(HAVE_MEMCHECK_H, 1,
547 [Define if valgrind's memcheck.h header is installed.])
550 AC_SUBST(valgrind_path_defines)
551 AC_SUBST(valgrind_command)
553 # Enable code coverage collection
554 AC_ARG_ENABLE(coverage,
555 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
556 [enable compiler's code coverage collection.
557 Use to measure compiler performance and locate
558 unused parts of the compiler. With LEVEL, specify
559 optimization. Values are opt, noopt,
561 [case "${enableval}" in
563 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
566 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
569 # a.k.a. --disable-coverage
573 AC_MSG_ERROR(unknown coverage setting $enableval)
577 AC_SUBST(coverage_flags)
579 AC_ARG_ENABLE(gather-detailed-mem-stats,
580 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
581 [enable detailed memory allocation stats gathering])], [],
582 [enable_gather_detailed_mem_stats=no])
583 if test x$enable_gather_detailed_mem_stats = xyes ; then
584 AC_DEFINE(GATHER_STATISTICS, 1,
585 [Define to enable detailed memory allocation stats gathering.])
588 # -------------------------------
589 # Miscenalleous configure options
590 # -------------------------------
592 # See if we are building gcc with C++.
593 AC_ARG_ENABLE(build-with-cxx,
594 [AS_HELP_STRING([--enable-build-with-cxx],
595 [build with C++ compiler instead of C compiler])],
596 ENABLE_BUILD_WITH_CXX=$enableval,
597 ENABLE_BUILD_WITH_CXX=no)
598 AC_SUBST(ENABLE_BUILD_WITH_CXX)
599 if test "$ENABLE_BUILD_WITH_CXX" = "yes"; then
600 AC_DEFINE(ENABLE_BUILD_WITH_CXX, 1,
601 [Define if building with C++.])
606 [AS_HELP_STRING([--with-stabs],
607 [arrange to use stabs instead of host debug format])],
611 # Determine whether or not multilibs are enabled.
612 AC_ARG_ENABLE(multilib,
613 [AS_HELP_STRING([--enable-multilib],
614 [enable library support for multiple ABIs])],
615 [], [enable_multilib=yes])
616 AC_SUBST(enable_multilib)
618 # Enable __cxa_atexit for C++.
619 AC_ARG_ENABLE(__cxa_atexit,
620 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
623 # Enable C extension for decimal float if target supports it.
624 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
626 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
627 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
628 [Define to 1 to enable decimal float extension to C.])
630 # Use default_decimal_float for dependency.
631 enable_decimal_float=$default_decimal_float
633 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
634 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
635 [Define to 1 to specify that we are using the BID decimal floating
636 point format instead of DPD])
638 # Enable C extension for fixed-point arithmetic.
639 AC_ARG_ENABLE(fixed-point,
640 [AS_HELP_STRING([--enable-fixed-point],
641 [enable fixed-point arithmetic extension to C])],
646 enable_fixed_point=yes
652 AC_MSG_WARN([fixed-point is not supported on IRIX, ignored])
653 enable_fixed_point=no
656 enable_fixed_point=yes
661 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
662 enable_fixed_point=no
666 AC_SUBST(enable_fixed_point)
668 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
669 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
670 [Define to 1 to enable fixed-point arithmetic extension to C.])
673 # Pass with no value to take the default
674 # Pass with a value to specify a thread package
675 AC_ARG_ENABLE(threads,
676 [AS_HELP_STRING([[--enable-threads[=LIB]]],
677 [enable thread usage for target GCC,
678 using LIB thread package])],,
682 [AS_HELP_STRING([--enable-tls],
683 [enable or disable generation of tls code
684 overriding the assembler check for tls support])],
688 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
689 Valid choices are 'yes' and 'no'.]) ;;
693 AC_ARG_ENABLE(objc-gc,
694 [AS_HELP_STRING([--enable-objc-gc],
695 [enable the use of Boehm's garbage collector with
696 the GNU Objective-C runtime])],
697 if test x$enable_objc_gc = xno; then
705 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
706 dwarf2="$with_dwarf2",
709 AC_ARG_ENABLE(shared,
710 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
712 case $enable_shared in
716 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
717 for pkg in $enableval; do
718 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
725 ], [enable_shared=yes])
726 AC_SUBST(enable_shared)
728 AC_ARG_WITH([native-system-header-dir],
729 [ --with-native-system-header-dir=dir
730 use dir as the directory to look for standard
731 system header files in. Defaults to /usr/include.],
733 case ${with_native_system_header_dir} in
734 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
735 /* | [[A-Za-z]]:[[\\/]]*) ;;
736 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
738 configured_native_system_header_dir="${withval}"
739 ], [configured_native_system_header_dir=])
741 AC_ARG_WITH(build-sysroot,
742 [AS_HELP_STRING([--with-build-sysroot=sysroot],
743 [use sysroot as the system root during the build])],
744 [if test x"$withval" != x ; then
745 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
747 [SYSROOT_CFLAGS_FOR_TARGET=])
748 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
751 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
752 [search for usr/lib, usr/include, et al, within DIR])],
754 case ${with_sysroot} in
755 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
756 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
759 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
760 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
762 if test "x$prefix" = xNONE; then
763 test_prefix=/usr/local
767 if test "x$exec_prefix" = xNONE; then
768 test_exec_prefix=$test_prefix
770 test_exec_prefix=$exec_prefix
772 case ${TARGET_SYSTEM_ROOT} in
773 "${test_prefix}"|"${test_prefix}/"*|\
774 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
775 '${prefix}'|'${prefix}/'*|\
776 '${exec_prefix}'|'${exec_prefix}/'*)
777 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
778 TARGET_SYSTEM_ROOT_DEFINE="$t"
783 TARGET_SYSTEM_ROOT_DEFINE=
784 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
786 AC_SUBST(TARGET_SYSTEM_ROOT)
787 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
788 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
791 [AS_HELP_STRING([--with-specs=SPECS],
792 [add SPECS to driver command-line processing])],
793 [CONFIGURE_SPECS=$withval],
796 AC_SUBST(CONFIGURE_SPECS)
798 ACX_PKGVERSION([GCC])
799 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
801 # Sanity check enable_languages in case someone does not run the toplevel
802 # configure # script.
803 AC_ARG_ENABLE(languages,
804 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
805 [case ,${enable_languages}, in
807 # go safe -- we cannot be much sure without the toplevel
809 # analysis of which target libs are present and usable
813 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
818 enable_languages=c,${enable_languages}
821 [enable_languages=c])
823 AC_ARG_WITH(multilib-list,
824 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
826 with_multilib_list=default)
828 # -------------------------
829 # Checks for other programs
830 # -------------------------
834 # Find some useful tools
836 # We need awk to create options.c and options.h.
837 # Bail out if it's missing.
839 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
847 # By default, the Darwin ranlib will not treat common symbols as
848 # definitions when building the archive table of contents. Other
849 # ranlibs do that; pass an option to the Darwin ranlib that makes
850 # it behave similarly.
856 AC_SUBST(ranlib_flags)
860 # See if cmp has --ignore-initial.
861 gcc_AC_PROG_CMP_IGNORE_INITIAL
863 # See if we have the mktemp command.
864 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
866 # See if makeinfo has been installed and is modern enough
867 # that we can use it.
868 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
869 [GNU texinfo.* \([0-9][0-9.]*\)],
870 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
871 if test $gcc_cv_prog_makeinfo_modern = no; then
873 *** Makeinfo is missing or too old.
874 *** Info documentation will not be built.])
881 # Is pod2man recent enough to regenerate manpages?
882 AC_MSG_CHECKING([for recent Pod::Man])
883 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
885 GENERATED_MANPAGES=generated-manpages
890 AC_SUBST(GENERATED_MANPAGES)
892 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
895 dnl Don't use AC_PROG_LEX; we insist on flex.
896 dnl LEXLIB is not useful in gcc.
897 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
900 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
902 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
903 # check for build == host before using them.
906 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
907 && test -d ../binutils ; then
908 NM='${objdir}/../binutils/nm-new'
910 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
914 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
915 && test -d ../binutils ; then
916 AR='${objdir}/../binutils/ar'
918 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
922 # --------------------
923 # Checks for C headers
924 # --------------------
926 # Need to reject headers which give warnings, so that the -Werror bootstrap
927 # works later. *sigh* This needs to come before all header checks.
934 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
935 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
936 sys/resource.h sys/param.h sys/times.h sys/stat.h \
937 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
939 # Check for thread headers.
940 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
941 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
943 # These tests can't be done till we know if we have limits.h.
947 # ----------------------
948 # Checks for C++ headers
949 # ----------------------
951 dnl Autoconf will give an error in the configure script if there is no
952 dnl C++ preprocessor. Hack to prevent that.
953 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
955 m4_popdef([AC_MSG_ERROR])[]dnl
959 AC_CHECK_HEADERS(unordered_map)
960 AC_CHECK_HEADERS(tr1/unordered_map)
961 AC_CHECK_HEADERS(ext/hash_map)
970 # These libraries may be used by collect2.
971 # We may need a special search path to get them linked.
972 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
974 for libs in '' -lld -lmld \
975 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
976 '-L/usr/lib/cmplrs/cc3.11 -lmld'
979 AC_TRY_LINK_FUNC(ldopen,
980 [gcc_cv_collect2_libs="$libs"; break])
983 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
984 case $gcc_cv_collect2_libs in
986 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
988 AC_SUBST(COLLECT2_LIBS)
990 # When building Ada code on Alpha, we need exc_resume which is usually in
991 # -lexc. So test for it.
994 AC_SEARCH_LIBS(exc_resume, exc)
997 AC_SUBST(GNAT_LIBEXC)
999 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1002 AC_SEARCH_LIBS(kstat_open, kstat)
1003 EXTRA_GCC_LIBS="$LIBS"
1005 AC_SUBST(EXTRA_GCC_LIBS)
1007 # Some systems put ldexp and frexp in libm instead of libc; assume
1008 # they're both in the same place. jcf-dump needs them.
1011 AC_SEARCH_LIBS(ldexp, m)
1016 # Use <inttypes.h> only if it exists,
1017 # doesn't clash with <sys/types.h>, and declares intmax_t.
1018 AC_MSG_CHECKING(for inttypes.h)
1019 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1020 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1021 [[#include <sys/types.h>
1022 #include <inttypes.h>]],
1023 [[intmax_t i = -1;]])],
1024 [gcc_cv_header_inttypes_h=yes],
1025 [gcc_cv_header_inttypes_h=no])])
1026 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1027 if test $gcc_cv_header_inttypes_h = yes; then
1028 AC_DEFINE(HAVE_INTTYPES_H, 1,
1029 [Define if you have a working <inttypes.h> header file.])
1032 dnl Disabled until we have a complete test for buggy enum bitfields.
1033 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1035 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1036 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1037 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1038 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1039 putchar_unlocked putc_unlocked)
1040 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1041 sysconf strsignal getrusage nl_langinfo \
1042 gettimeofday mbstowcs wcswidth mmap setlocale \
1043 gcc_UNLOCKED_FUNCS madvise)
1045 if test x$ac_cv_func_mbstowcs = xyes; then
1046 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1047 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1053 [gcc_cv_func_mbstowcs_works=yes],
1054 [gcc_cv_func_mbstowcs_works=no],
1055 [gcc_cv_func_mbstowcs_works=yes])])
1056 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1057 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1058 [Define this macro if mbstowcs does not crash when its
1059 first argument is NULL.])
1063 AC_CHECK_TYPE(ssize_t, int)
1064 AC_CHECK_TYPE(caddr_t, char *)
1066 gcc_AC_FUNC_MMAP_BLACKLIST
1070 # Under VMS, vfork works very differently than on Unix. The standard test
1071 # won't work, and it isn't easily adaptable. It makes more sense to
1073 ac_cv_func_vfork_works=yes
1078 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1079 # iconv() prototype.
1080 AS_IF([test "$ENABLE_BUILD_WITH_CXX" = "yes"],
1081 [AC_LANG_PUSH([C++])
1083 AC_LANG_POP([C++])],
1086 # Until we have in-tree GNU iconv:
1088 AC_SUBST(LIBICONV_DEP)
1094 # We will need to find libiberty.h and ansidecl.h
1095 saved_CFLAGS="$CFLAGS"
1096 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1097 saved_CXXFLAGS="$CXXFLAGS"
1098 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include"
1099 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1100 strsignal strstr strverscmp \
1101 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1102 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1103 #include "ansidecl.h"
1104 #include "system.h"])
1106 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1107 #include "ansidecl.h"
1109 #ifdef HAVE_SYS_RESOURCE_H
1110 #include <sys/resource.h>
1114 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1115 #include "ansidecl.h"
1117 #ifdef HAVE_SYS_RESOURCE_H
1118 #include <sys/resource.h>
1120 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1121 [Define to `long' if <sys/resource.h> doesn't define.])])
1123 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1124 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1125 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1126 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1127 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1128 #include "ansidecl.h"
1137 gcc_AC_CHECK_DECLS(times, , ,[
1138 #include "ansidecl.h"
1140 #ifdef HAVE_SYS_TIMES_H
1141 #include <sys/times.h>
1145 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1146 #include "ansidecl.h"
1151 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1153 AS_IF([test "$ENABLE_BUILD_WITH_CXX" = "yes"],
1154 [AC_LANG_PUSH([C++])
1155 gcc_AC_CHECK_DECLS(madvise, , ,[
1156 #include "ansidecl.h"
1159 AC_LANG_POP([C++])],
1160 [gcc_AC_CHECK_DECLS(madvise, , ,[
1161 #include "ansidecl.h"
1166 # More time-related stuff.
1167 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1168 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1169 #include "ansidecl.h"
1171 #ifdef HAVE_SYS_TIMES_H
1172 #include <sys/times.h>
1174 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1175 if test $ac_cv_struct_tms = yes; then
1176 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1177 [Define if <sys/times.h> defines struct tms.])
1180 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1181 # revisit after autoconf 2.50.
1182 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1183 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1184 #include "ansidecl.h"
1186 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1187 if test $gcc_cv_type_clock_t = yes; then
1188 AC_DEFINE(HAVE_CLOCK_T, 1,
1189 [Define if <time.h> defines clock_t.])
1192 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1193 CFLAGS="$saved_CFLAGS"
1194 CXXFLAGS="$saved_CXXFLAGS"
1196 gcc_AC_INITFINI_ARRAY
1198 # mkdir takes a single argument on some systems.
1199 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1207 # With Setjmp/Longjmp based exception handling.
1208 AC_ARG_ENABLE(sjlj-exceptions,
1209 [AS_HELP_STRING([--enable-sjlj-exceptions],
1210 [arrange to use setjmp/longjmp exception handling])],
1213 if test $enableval != yes; then
1214 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1219 force_sjlj_exceptions=yes],
1222 force_sjlj_exceptions=yes
1226 force_sjlj_exceptions=no
1229 if test $force_sjlj_exceptions = yes; then
1230 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1231 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1232 [Define 0/1 to force the choice for exception handling model.])
1235 # --------------------------------------------------------
1236 # Build, host, and target specific configuration fragments
1237 # --------------------------------------------------------
1239 # Collect build-machine-specific information.
1240 . ${srcdir}/config.build
1242 # Collect host-machine-specific information.
1243 . ${srcdir}/config.host
1247 # Collect target-machine-specific information.
1248 . ${srcdir}/config.gcc
1250 extra_objs="${host_extra_objs} ${extra_objs}"
1251 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1253 # Default the target-machine variables that were not explicitly set.
1254 if test x"$tm_file" = x
1255 then tm_file=$cpu_type/$cpu_type.h; fi
1257 if test x"$extra_headers" = x
1258 then extra_headers=; fi
1260 if test x$md_file = x
1261 then md_file=$cpu_type/$cpu_type.md; fi
1263 if test x$out_file = x
1264 then out_file=$cpu_type/$cpu_type.c; fi
1266 if test x"$tmake_file" = x
1267 then tmake_file=$cpu_type/t-$cpu_type
1270 if test x"$dwarf2" = xyes
1271 then tm_file="$tm_file tm-dwarf2.h"
1274 # Say what files are being used for the output code and MD file.
1275 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1276 echo "Using \`$srcdir/config/$md_file' as machine description file."
1278 # If any of the xm_file variables contain nonexistent files, warn
1279 # about them and drop them.
1282 for x in $build_xm_file; do
1283 if test -f $srcdir/config/$x
1285 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1291 for x in $host_xm_file; do
1292 if test -f $srcdir/config/$x
1294 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1300 for x in $xm_file; do
1301 if test -f $srcdir/config/$x
1303 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1309 for f in $tm_file; do
1312 if test $count = ax; then
1313 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1315 echo "Using the following target machine macro files:"
1316 for f in $tm_file; do
1317 echo " $srcdir/config/$f"
1321 if test x$need_64bit_hwint = xyes; then
1322 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1323 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1326 if test x$use_long_long_for_widest_fast_int = xyes; then
1327 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1328 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1329 efficiently supported by the host hardware.])
1333 for f in $host_xm_file; do
1336 if test $count = a; then
1338 elif test $count = ax; then
1339 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1341 echo "Using the following host machine macro files:"
1342 for f in $host_xm_file; do
1343 echo " $srcdir/config/$f"
1346 echo "Using ${out_host_hook_obj} for host machine hooks."
1348 if test "$host_xm_file" != "$build_xm_file"; then
1350 for f in $build_xm_file; do
1353 if test $count = a; then
1355 elif test $count = ax; then
1356 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1358 echo "Using the following build machine macro files:"
1359 for f in $build_xm_file; do
1360 echo " $srcdir/config/$f"
1365 if test -n "$configured_native_system_header_dir"; then
1366 native_system_header_dir=$configured_native_system_header_dir
1368 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1369 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1373 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1374 gcc_cv_mcontext_underscores,
1376 #include <sys/cdefs.h>
1377 #include <sys/signal.h>
1378 #include <ucontext.h>
1379 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1381 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1382 if test $gcc_cv_mcontext_underscores = yes; then
1383 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1384 [mcontext_t fields start with __])
1393 # Check if a valid thread package
1394 case ${enable_threads} in
1397 target_thread_file='single'
1401 target_thread_file='single'
1403 aix | dce | lynx | mipssde | posix | rtems | \
1404 single | tpf | vxworks | win32)
1405 target_thread_file=${enable_threads}
1408 echo "${enable_threads} is an unknown thread package" 1>&2
1413 if test x${thread_file} = x; then
1414 # No thread file set by target-specific clauses in config.gcc,
1415 # so use file chosen by default logic above
1416 thread_file=${target_thread_file}
1419 # Make gthr-default.h if we have a thread file.
1421 if test $thread_file != single; then
1422 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1423 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1424 rm -f gthr-default.h-t
1426 mv -f gthr-default.h-t gthr-default.h
1428 gthread_flags=-DHAVE_GTHR_DEFAULT
1430 AC_SUBST(gthread_flags)
1437 if test x$enable___cxa_atexit = xyes || \
1438 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1439 if test x$host = x$target; then
1441 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1442 # keyed to flag_use_cxa_atexit
1447 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1448 [echo "__cxa_atexit can't be enabled on this target"])
1452 # We can't check for __cxa_atexit when building a cross, so assume
1456 if test x$use_cxa_atexit = xyes; then
1457 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1458 [Define if you want to use __cxa_atexit, rather than atexit, to
1459 register C++ destructors for local statics and global objects.
1460 This is essential for fully standards-compliant handling of
1461 destructors, but requires __cxa_atexit in libc.])
1465 # Look for a file containing extra machine modes.
1466 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1467 extra_modes_file='$(srcdir)'/config/${extra_modes}
1468 AC_SUBST(extra_modes_file)
1469 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1470 [Define to the name of a file containing a list of extra machine modes
1471 for this architecture.])
1474 # Convert extra_options into a form suitable for Makefile use.
1477 for f in $extra_options; do
1478 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1479 all_opt_files="$all_opt_files $srcdir/config/$f"
1481 AC_SUBST(extra_opt_files)
1483 # auto-host.h is the file containing items generated by autoconf and is
1484 # the first file included by config.h.
1485 # If host=build, it is correct to have bconfig include auto-host.h
1486 # as well. If host!=build, we are in error and need to do more
1487 # work to find out the build config parameters.
1488 if test x$host = x$build
1490 build_auto=auto-host.h
1492 # We create a subdir, then run autoconf in the subdir.
1493 # To prevent recursion we set host and build for the new
1494 # invocation of configure to the build for this invocation
1501 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1502 *) realsrcdir=../${srcdir};;
1504 saved_CFLAGS="${CFLAGS}"
1505 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1506 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1507 ${realsrcdir}/configure \
1508 --enable-languages=${enable_languages-all} \
1509 --target=$target_alias --host=$build_alias --build=$build_alias
1510 CFLAGS="${saved_CFLAGS}"
1512 # We just finished tests for the build machine, so rename
1513 # the file auto-build.h in the gcc directory.
1514 mv auto-host.h ../auto-build.h
1517 build_auto=auto-build.h
1519 AC_SUBST(build_subdir)
1521 tm_file="${tm_file} defaults.h"
1522 tm_p_file="${tm_p_file} tm-preds.h"
1523 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1524 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1525 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1526 # put this back in temporarily.
1527 xm_file="auto-host.h ansidecl.h ${xm_file}"
1534 # Compile in configure arguments.
1535 if test -f configargs.h ; then
1536 # Being re-configured.
1537 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1538 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1540 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1543 # Double all backslashes and backslash all quotes to turn
1544 # gcc_config_arguments into a C string.
1545 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1546 $gcc_config_arguments
1548 gcc_config_arguments_str=`cat conftest.out`
1551 cat > configargs.h <<EOF
1552 /* Generated automatically. */
1553 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1554 static const char thread_model[] = "$thread_file";
1556 static const struct {
1557 const char *name, *value;
1558 } configure_default_options[] = $configure_default_options;
1563 gcc_BASEVER=`cat $srcdir/BASE-VER`
1564 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1565 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1566 if test -f $srcdir/REVISION ; then
1567 gcc_REVISION=`cat $srcdir/REVISION`
1571 cat > plugin-version.h <<EOF
1572 #include "configargs.h"
1574 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1575 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1576 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1577 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1579 static char basever[] = "$gcc_BASEVER";
1580 static char datestamp[] = "$gcc_DATESTAMP";
1581 static char devphase[] = "$gcc_DEVPHASE";
1582 static char revision[] = "$gcc_REVISION";
1584 /* FIXME plugins: We should make the version information more precise.
1585 One way to do is to add a checksum. */
1587 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1589 configuration_arguments};
1593 # Internationalization
1594 ZW_GNU_GETTEXT_SISTER_DIR
1596 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1597 # -liconv on the link line twice.
1598 case "$LIBINTL" in *$LIBICONV*)
1602 AC_ARG_ENABLE(secureplt,
1603 [AS_HELP_STRING([--enable-secureplt],
1604 [enable -msecure-plt by default for PowerPC])],
1607 AC_ARG_ENABLE(leading-mingw64-underscores,
1608 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1609 [enable leading underscores on 64 bit mingw targets]),
1611 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1612 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1613 [Define if we should use leading underscore on 64 bit mingw targets])])
1616 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1619 AC_ARG_ENABLE(frame-pointer,
1620 [AS_HELP_STRING([--enable-frame-pointer],
1621 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1624 linux* | darwin[[8912]]*)
1625 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1627 enable_frame_pointer=no
1630 enable_frame_pointer=yes
1635 # Windows32 Registry support for specifying GCC installation paths.
1636 AC_ARG_ENABLE(win32-registry,
1637 [AS_HELP_STRING([--disable-win32-registry],
1638 [disable lookup of installation paths in the
1639 Registry on Windows hosts])
1640 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1641 AS_HELP_STRING([--enable-win32-registry=KEY],
1642 [use KEY instead of GCC version as the last portion
1643 of the registry key])],,)
1646 win32 | pe | cygwin* | mingw32* | uwin*)
1647 if test "x$enable_win32_registry" != xno; then
1648 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1651 if test "x$enable_win32_registry" != xno; then
1652 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1653 [Define to 1 if installation paths should be looked up in the Windows
1654 Registry. Ignored on non-Windows hosts.])
1656 if test "x$enable_win32_registry" != xyes \
1657 && test "x$enable_win32_registry" != x; then
1658 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1659 [Define to be the last component of the Windows registry key under which
1660 to look for installation paths. The full key used will be
1661 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1662 The default is the GCC version number.])
1668 # Get an absolute path to the GCC top-level source directory
1669 holddir=`${PWDCMD-pwd}`
1671 topdir=`${PWDCMD-pwd}`
1674 # Conditionalize the makefile for this host machine.
1676 for f in ${host_xmake_file}
1678 if test -f ${srcdir}/config/$f
1680 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1684 # Conditionalize the makefile for this target machine.
1686 for f in ${tmake_file}
1688 if test -f ${srcdir}/config/$f
1690 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1693 tmake_file="${tmake_file_}"
1695 out_object_file=`basename $out_file .c`.o
1696 common_out_object_file=`basename $common_out_file .c`.o
1698 tm_file_list="options.h"
1699 tm_include_list="options.h insn-constants.h"
1700 for f in $tm_file; do
1703 f=`echo $f | sed 's/^..//'`
1704 tm_file_list="${tm_file_list} $f"
1705 tm_include_list="${tm_include_list} $f"
1708 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1709 tm_include_list="${tm_include_list} $f"
1712 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1713 tm_include_list="${tm_include_list} config/$f"
1720 for f in $tm_p_file; do
1723 tm_p_file_list="${tm_p_file_list} $f"
1724 tm_p_include_list="${tm_p_include_list} $f"
1727 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1728 tm_p_include_list="${tm_p_include_list} config/$f"
1734 for f in $xm_file; do
1737 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1738 xm_include_list="${xm_include_list} $f"
1741 xm_file_list="${xm_file_list} $f"
1742 xm_include_list="${xm_include_list} $f"
1745 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1746 xm_include_list="${xm_include_list} config/$f"
1752 host_xm_include_list=
1753 for f in $host_xm_file; do
1756 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1757 host_xm_include_list="${host_xm_include_list} $f"
1760 host_xm_file_list="${host_xm_file_list} $f"
1761 host_xm_include_list="${host_xm_include_list} $f"
1764 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1765 host_xm_include_list="${host_xm_include_list} config/$f"
1771 for f in $build_xm_file; do
1774 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1775 build_xm_include_list="${build_xm_include_list} $f"
1777 auto-build.h | auto-host.h )
1778 build_xm_file_list="${build_xm_file_list} $f"
1779 build_xm_include_list="${build_xm_include_list} $f"
1782 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1783 build_xm_include_list="${build_xm_include_list} config/$f"
1788 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1789 # cross-compiler which does not use the native headers and libraries.
1790 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1791 CROSS= AC_SUBST(CROSS)
1792 ALL=all.internal AC_SUBST(ALL)
1793 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1795 if test "x$with_build_sysroot" != x; then
1796 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1798 # This value is used, even on a native system, because
1799 # CROSS_SYSTEM_HEADER_DIR is just
1800 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1801 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1804 if test x$host != x$target
1806 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1808 SYSTEM_HEADER_DIR=$build_system_header_dir
1809 case "$host","$target" in
1810 # Darwin crosses can use the host system's libraries and headers,
1811 # because of the fat library support. Of course, it must be the
1812 # same version of Darwin on both sides. Allow the user to
1813 # just say --target=foo-darwin without a version number to mean
1814 # "the version on this system".
1815 *-*-darwin*,*-*-darwin*)
1816 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1817 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1818 if test $hostos = $targetos -o $targetos = darwin ; then
1820 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1825 i?86-*-*,x86_64-*-* \
1826 | powerpc*-*-*,powerpc64*-*-*)
1827 CROSS="$CROSS -DNATIVE_CROSS" ;;
1832 if test "x$with_headers" = x; then
1839 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1840 SYSTEM_HEADER_DIR=$build_system_header_dir
1843 # If this is a cross-compiler that does not
1844 # have its own set of headers then define
1847 # If this is using newlib, without having the headers available now,
1848 # then define inhibit_libc in LIBGCC2_CFLAGS.
1849 # This prevents libgcc2 from containing any code which requires libc
1851 : ${inhibit_libc=false}
1852 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1853 test x$with_newlib = xyes ; } &&
1854 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1857 AC_SUBST(inhibit_libc)
1859 # When building gcc with a cross-compiler, we need to adjust things so
1860 # that the generator programs are still built with the native compiler.
1861 # Also, we cannot run fixincludes.
1863 # These are the normal (build=host) settings:
1864 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1865 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1866 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1867 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1869 # And these apply if build != host, or we are generating coverage data
1870 if test x$build != x$host || test "x$coverage_flags" != x
1872 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1873 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1876 # Expand extra_headers to include complete path.
1877 # This substitutes for lots of t-* files.
1879 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1880 for file in ${extra_headers} ; do
1881 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1884 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1885 if test x"$use_gcc_tgmath" = xyes
1886 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1889 # Define collect2 in Makefile.
1890 case $host_can_use_collect2 in
1892 *) collect2='collect2$(exeext)' ;;
1894 AC_SUBST([collect2])
1896 # Add a definition of USE_COLLECT2 if system wants one.
1897 case $use_collect2 in
1898 no) use_collect2= ;;
1901 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1902 xm_defines="${xm_defines} USE_COLLECT2"
1903 case $host_can_use_collect2 in
1905 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1911 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1912 [Define to the name of the LTO plugin DSO that must be
1913 passed to the linker's -plugin=LIB option.])
1915 # ---------------------------
1916 # Assembler & linker features
1917 # ---------------------------
1919 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1920 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1921 # However when ld-new is first executed from the build tree, libtool will
1922 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1923 # to the build tree. While doing this we need to use the previous-stage
1924 # linker, or we have an infinite loop. The presence of a shell script as
1925 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1926 # the gcc/collect-ld script. So we need to know how libtool works, or
1927 # exec-tool will fail.
1929 m4_defun([_LT_CONFIG_COMMANDS], [])
1932 AC_SUBST(enable_fast_install)
1934 # Identify the assembler which will work hand-in-glove with the newly
1935 # built GCC, so that we can examine its features. This is the assembler
1936 # which will be driven by the driver program.
1938 # If build != host, and we aren't building gas in-tree, we identify a
1939 # build->target assembler and hope that it will have the same features
1940 # as the host->target assembler we'll be using.
1941 gcc_cv_gas_major_version=
1942 gcc_cv_gas_minor_version=
1943 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1945 m4_pattern_allow([AS_FOR_TARGET])dnl
1946 AS_VAR_SET_IF(gcc_cv_as,, [
1947 if test -x "$DEFAULT_ASSEMBLER"; then
1948 gcc_cv_as="$DEFAULT_ASSEMBLER"
1949 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1950 && test -f ../gas/Makefile \
1951 && test x$build = x$host; then
1952 gcc_cv_as=../gas/as-new$build_exeext
1953 elif test -x as$build_exeext; then
1954 # Build using assembler in the current directory.
1955 gcc_cv_as=./as$build_exeext
1956 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1957 gcc_cv_as="$AS_FOR_TARGET"
1959 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1962 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1963 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1964 case "$ORIGINAL_AS_FOR_TARGET" in
1965 ./as | ./as$build_exeext) ;;
1966 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1969 AC_MSG_CHECKING(what assembler to use)
1970 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1971 # Single tree build which includes gas. We want to prefer it
1972 # over whatever linker top-level may have detected, since
1973 # we'll use what we're building after installation anyway.
1974 AC_MSG_RESULT(newly built gas)
1976 _gcc_COMPUTE_GAS_VERSION
1977 in_tree_gas_is_elf=no
1978 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1979 || (grep 'obj_format = multi' ../gas/Makefile \
1980 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1982 in_tree_gas_is_elf=yes
1985 AC_MSG_RESULT($gcc_cv_as)
1989 # Identify the linker which will work hand-in-glove with the newly
1990 # built GCC, so that we can examine its features. This is the linker
1991 # which will be driven by the driver program.
1993 # If build != host, and we aren't building gas in-tree, we identify a
1994 # build->target linker and hope that it will have the same features
1995 # as the host->target linker we'll be using.
1996 gcc_cv_gld_major_version=
1997 gcc_cv_gld_minor_version=
1998 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1999 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2001 AS_VAR_SET_IF(gcc_cv_ld,, [
2002 if test -x "$DEFAULT_LINKER"; then
2003 gcc_cv_ld="$DEFAULT_LINKER"
2004 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2005 && test -f ../ld/Makefile \
2006 && test x$build = x$host; then
2007 gcc_cv_ld=../ld/ld-new$build_exeext
2008 elif test -x collect-ld$build_exeext; then
2009 # Build using linker in the current directory.
2010 gcc_cv_ld=./collect-ld$build_exeext
2011 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2012 gcc_cv_ld="$LD_FOR_TARGET"
2014 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2017 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2018 PLUGIN_LD=`basename $gcc_cv_ld`
2019 AC_ARG_WITH(plugin-ld,
2020 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2021 [if test x"$withval" != x; then
2022 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2023 PLUGIN_LD="$withval"
2025 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2026 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
2028 # Check to see if we are using gold instead of ld
2029 AC_MSG_CHECKING(whether we are using gold)
2031 if test x$gcc_cv_ld != x; then
2032 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2033 | grep "GNU gold" > /dev/null; then
2037 AC_MSG_RESULT($ld_is_gold)
2039 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2040 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2041 case "$ORIGINAL_LD_FOR_TARGET" in
2042 ./collect-ld | ./collect-ld$build_exeext) ;;
2043 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2046 AC_MSG_CHECKING(what linker to use)
2047 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2048 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2049 # Single tree build which includes ld. We want to prefer it
2050 # over whatever linker top-level may have detected, since
2051 # we'll use what we're building after installation anyway.
2052 AC_MSG_RESULT(newly built ld)
2054 in_tree_ld_is_elf=no
2055 if (grep 'EMUL = .*elf' ../ld/Makefile \
2056 || grep 'EMUL = .*linux' ../ld/Makefile \
2057 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2058 in_tree_ld_is_elf=yes
2059 elif test "$ld_is_gold" = yes; then
2060 in_tree_ld_is_elf=yes
2062 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
2065 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
2066 if test x$gcc_cv_gld_version != x; then
2070 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2071 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2074 AC_MSG_RESULT($gcc_cv_ld)
2078 # Figure out what nm we will be using.
2079 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2080 AS_VAR_SET_IF(gcc_cv_nm,, [
2081 if test -f $gcc_cv_binutils_srcdir/configure.in \
2082 && test -f ../binutils/Makefile \
2083 && test x$build = x$host; then
2084 gcc_cv_nm=../binutils/nm-new$build_exeext
2085 elif test -x nm$build_exeext; then
2086 gcc_cv_nm=./nm$build_exeext
2087 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2088 gcc_cv_nm="$NM_FOR_TARGET"
2090 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2093 AC_MSG_CHECKING(what nm to use)
2094 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2095 # Single tree build which includes binutils.
2096 AC_MSG_RESULT(newly built nm)
2099 AC_MSG_RESULT($gcc_cv_nm)
2103 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2104 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2105 case "$ORIGINAL_NM_FOR_TARGET" in
2106 ./nm | ./nm$build_exeext) ;;
2107 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2111 # Figure out what objdump we will be using.
2112 AS_VAR_SET_IF(gcc_cv_objdump,, [
2113 if test -f $gcc_cv_binutils_srcdir/configure.in \
2114 && test -f ../binutils/Makefile \
2115 && test x$build = x$host; then
2116 # Single tree build which includes binutils.
2117 gcc_cv_objdump=../binutils/objdump$build_exeext
2118 elif test -x objdump$build_exeext; then
2119 gcc_cv_objdump=./objdump$build_exeext
2120 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2121 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2123 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2126 AC_MSG_CHECKING(what objdump to use)
2127 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2128 # Single tree build which includes binutils.
2129 AC_MSG_RESULT(newly built objdump)
2130 elif test x$gcc_cv_objdump = x; then
2131 AC_MSG_RESULT(not found)
2133 AC_MSG_RESULT($gcc_cv_objdump)
2136 # Figure out what readelf we will be using.
2137 AS_VAR_SET_IF(gcc_cv_readelf,, [
2138 if test -f $gcc_cv_binutils_srcdir/configure.in \
2139 && test -f ../binutils/Makefile \
2140 && test x$build = x$host; then
2141 # Single tree build which includes binutils.
2142 gcc_cv_readelf=../binutils/readelf$build_exeext
2143 elif test -x readelf$build_exeext; then
2144 gcc_cv_readelf=./readelf$build_exeext
2146 AC_PATH_PROG(gcc_cv_readelf, readelf)
2149 AC_MSG_CHECKING(what readelf to use)
2150 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2151 # Single tree build which includes binutils.
2152 AC_MSG_RESULT(newly built readelf)
2153 elif test x$gcc_cv_readelf = x; then
2154 AC_MSG_RESULT(not found)
2156 AC_MSG_RESULT($gcc_cv_readelf)
2159 # Figure out what assembler alignment features are present.
2160 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2164 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2165 [Define if your assembler supports .balign and .p2align.])])
2167 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2170 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2171 [Define if your assembler supports specifying the maximum number
2172 of bytes to skip when using the GAS .p2align command.])])
2174 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2177 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2178 [Define if your assembler supports .literal16.])])
2180 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2182 [conftest_label1: .word 0
2184 conftest_label2: .word 0
2186 [if test x$gcc_cv_nm != x; then
2187 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2188 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2189 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2191 else gcc_cv_as_subsection_m1=yes
2193 rm -f conftest.nm1 conftest.nm2
2195 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2196 [Define if your assembler supports .subsection and .subsection -1 starts
2197 emitting at the beginning of your section.])])
2199 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2202 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2204 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2206 [ .weakref foobar, barfnot],,
2207 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2209 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2212 .NSUBSPA $CODE$,COMDAT],,
2213 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2215 # .hidden needs to be supported in both the assembler and the linker,
2216 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2217 # This is irritatingly difficult to feature test for; we have to check the
2218 # date string after the version number. If we've got an in-tree
2219 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2221 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2222 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2226 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2227 # STV_HIDDEN, so disable .hidden support if so.
2229 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2230 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2231 cat > conftest.s <<EOF
2238 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2239 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2240 grep '\.hidden default' > /dev/null; then
2243 gcc_cv_as_hidden=yes
2246 # Assume bug is present if objdump is missing.
2251 gcc_cv_as_hidden=yes
2256 # Darwin as has some visibility support, though with a different syntax.
2257 gcc_cv_as_hidden=yes
2261 # gnu_indirect_function type is an extension proposed at
2262 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2263 # selection of function implementation
2264 AC_ARG_ENABLE(gnu-indirect-function,
2265 [AS_HELP_STRING([--enable-gnu-indirect-function],
2266 [enable the use of the @gnu_indirect_function to glibc systems])],
2267 [case $enable_gnu_indirect_function in
2269 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2270 Valid choices are 'yes' and 'no'.]) ;;
2272 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2273 if test x$enable_gnu_indirect_function = xyes; then
2274 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2275 [Define if your system supports gnu indirect functions.])
2279 if test $in_tree_ld != yes ; then
2280 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2281 if echo "$ld_ver" | grep GNU > /dev/null; then
2282 if test x"$ld_is_gold" = xyes; then
2283 # GNU gold --version looks like this:
2285 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2287 # We extract the binutils version which is more familiar and specific
2288 # than the gold version.
2289 ld_vers=`echo $ld_ver | sed -n \
2290 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2292 # GNU ld --version looks like this:
2294 # GNU ld (GNU Binutils) 2.21.51.20110225
2295 ld_vers=`echo $ld_ver | sed -n \
2296 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2298 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2299 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2300 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2301 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2306 # Solaris 2 ld -V output looks like this for a regular version:
2308 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2310 # but test versions add stuff at the end:
2312 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2314 ld_ver=`$gcc_cv_ld -V 2>&1`
2315 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2316 ld_vers=`echo $ld_ver | sed -n \
2317 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2318 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2319 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2327 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2328 [[if test $in_tree_ld = yes ; then
2330 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2331 && test $in_tree_ld_is_elf = yes; then
2332 gcc_cv_ld_hidden=yes
2335 gcc_cv_ld_hidden=yes
2336 if test x"$ld_is_gold" = xyes; then
2338 elif echo "$ld_ver" | grep GNU > /dev/null; then
2339 if test 0"$ld_date" -lt 20020404; then
2340 if test -n "$ld_date"; then
2341 # If there was date string, but was earlier than 2002-04-04, fail
2343 elif test -z "$ld_vers"; then
2344 # If there was no date string nor ld version number, something is wrong
2347 test -z "$ld_vers_patch" && ld_vers_patch=0
2348 if test "$ld_vers_major" -lt 2; then
2350 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2351 gcc_cv_ld_hidden="no"
2352 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2360 # Darwin ld has some visibility support.
2361 gcc_cv_ld_hidden=yes
2363 hppa64*-*-hpux* | ia64*-*-hpux*)
2364 gcc_cv_ld_hidden=yes
2367 # .hidden support was backported to Solaris 8, starting with ld
2369 if test "$ld_vers_minor" -ge 276; then
2370 gcc_cv_ld_hidden=yes
2375 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2376 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2377 # .symbolic was only added in Solaris 9 12/02.
2378 gcc_cv_ld_hidden=yes
2386 libgcc_visibility=no
2387 AC_SUBST(libgcc_visibility)
2388 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2389 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2390 libgcc_visibility=yes
2391 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2392 [Define if your assembler and linker support .hidden.])
2395 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2396 gcc_cv_ld_ro_rw_mix=unknown
2397 if test $in_tree_ld = yes ; then
2398 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2399 && test $in_tree_ld_is_elf = yes; then
2400 gcc_cv_ld_ro_rw_mix=read-write
2402 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2403 echo '.section myfoosect, "a"' > conftest1.s
2404 echo '.section myfoosect, "aw"' > conftest2.s
2405 echo '.byte 1' >> conftest2.s
2406 echo '.section myfoosect, "a"' > conftest3.s
2407 echo '.byte 0' >> conftest3.s
2408 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2409 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2410 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2411 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2412 conftest2.o conftest3.o > /dev/null 2>&1; then
2413 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2414 | sed -e '/myfoosect/!d' -e N`
2415 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2416 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2417 gcc_cv_ld_ro_rw_mix=read-only
2419 gcc_cv_ld_ro_rw_mix=read-write
2424 rm -f conftest.* conftest[123].*
2427 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2428 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2429 [Define if your linker links a mix of read-only
2430 and read-write sections into a read-write section.])
2432 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2434 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2435 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2443 [[# GAS versions before 2.11 do not support uleb128,
2444 # despite appearing to.
2445 # ??? There exists an elf-specific test that will crash
2446 # the assembler. Perhaps it's better to figure out whether
2447 # arbitrary sections are supported and try the test.
2448 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2449 if echo "$as_ver" | grep GNU > /dev/null; then
2450 as_vers=`echo $as_ver | sed -n \
2451 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2452 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2453 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2454 if test $as_major -eq 2 && test $as_minor -lt 11
2456 else gcc_cv_as_leb128=yes
2459 [AC_DEFINE(HAVE_AS_LEB128, 1,
2460 [Define if your assembler supports .sleb128 and .uleb128.])])
2462 # Check if we have assembler support for unwind directives.
2463 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2470 .cfi_escape 1, 2, 3, 4, 5
2474 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2475 # read-only and read-write sections, we need to make sure that the
2476 # assembler used emits read-write .eh_frame sections.
2477 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2478 if test "x$gcc_cv_objdump" != x; then
2479 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2480 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2481 gcc_cv_as_cfi_directive=no
2484 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2485 # On Solaris/x86, make sure that GCC and gas agree on using
2486 # read-only .eh_frame sections for 64-bit.
2487 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2488 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2489 sed -e /.eh_frame/!d -e N | \
2490 grep READONLY > /dev/null; then
2491 gcc_cv_as_cfi_directive=yes
2493 gcc_cv_as_cfi_directive=no
2497 gcc_cv_as_cfi_directive=yes
2502 # no objdump, err on the side of caution
2503 gcc_cv_as_cfi_directive=no
2506 gcc_cv_as_cfi_directive=yes
2510 gcc_cv_as_cfi_directive=yes
2513 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2514 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2518 .cfi_adjust_cfa_offset 64
2520 .cfi_adjust_cfa_offset 128
2523 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2524 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2525 gcc_cv_as_cfi_advance_working=yes
2529 # no objdump, err on the side of caution
2530 gcc_cv_as_cfi_advance_working=no
2532 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2533 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2534 [`if test $gcc_cv_as_cfi_directive = yes \
2535 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2536 [Define 0/1 if your assembler supports CFI directives.])
2538 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2539 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2540 gcc_cv_as_cfi_personality_directive, ,,
2543 .cfi_personality 0, symbol
2545 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2546 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2547 then echo 1; else echo 0; fi`],
2548 [Define 0/1 if your assembler supports .cfi_personality.])
2550 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2551 gcc_cv_as_cfi_sections_directive, ,,
2553 .cfi_sections .debug_frame, .eh_frame
2557 win32 | pe | cygwin* | mingw32* | uwin*)
2558 # Need to check that we generated the correct relocation for the
2559 # .debug_frame section. This was fixed for binutils 2.21.
2560 gcc_cv_as_cfi_sections_directive=no
2561 if test "x$gcc_cv_objdump" != x; then
2562 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2563 grep secrel > /dev/null; then
2564 gcc_cv_as_cfi_sections_directive=yes
2569 gcc_cv_as_cfi_sections_directive=yes
2572 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2573 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2574 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2575 then echo 1; else echo 0; fi`],
2576 [Define 0/1 if your assembler supports .cfi_sections.])
2578 # GAS versions up to and including 2.11.0 may mis-optimize
2580 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2588 .section .eh_frame,"aw",@progbits
2590 .4byte .LECIE1-.LSCIE1
2604 .4byte .LEFDE1-.LASFDE1
2606 .4byte .LASFDE1-__FRAME_BEGIN__
2614 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2615 cat > conftest.lit <<EOF
2616 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2617 0010 01000000 12000000 18000000 00000000 ................
2618 0020 08000000 04080000 0044 .........D @&t@
2620 cat > conftest.big <<EOF
2621 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2622 0010 00000001 00000012 00000018 00000000 ................
2623 0020 00000008 04000000 0844 .........D @&t@
2625 # If the assembler didn't choke, and we can objdump,
2626 # and we got the correct data, then succeed.
2627 # The text in the here-document typically retains its unix-style line
2628 # endings, while the output of objdump will use host line endings.
2629 # Therefore, use diff -b for the comparisons.
2630 if test x$gcc_cv_objdump != x \
2631 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2632 | tail -3 > conftest.got \
2633 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2634 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2636 gcc_cv_as_eh_frame=yes
2637 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2638 gcc_cv_as_eh_frame=buggy
2640 # Uh oh, what do we do now?
2641 gcc_cv_as_eh_frame=no
2644 if test $gcc_cv_as_eh_frame = buggy; then
2645 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2646 [Define if your assembler mis-optimizes .eh_frame data.])
2649 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2650 [elf,2,12,0], [--fatal-warnings],
2651 [.section .rodata.str, "aMS", @progbits, 1])
2652 if test $gcc_cv_as_shf_merge = no; then
2653 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2654 [elf,2,12,0], [--fatal-warnings],
2655 [.section .rodata.str, "aMS", %progbits, 1])
2657 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2658 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2659 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2661 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2662 gcc_cv_as_comdat_group,
2663 [elf,2,16,0], [--fatal-warnings],
2664 [.section .text,"axG",@progbits,.foo,comdat])
2665 if test $gcc_cv_as_comdat_group = yes; then
2666 gcc_cv_as_comdat_group_percent=no
2667 gcc_cv_as_comdat_group_group=no
2669 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2670 gcc_cv_as_comdat_group_percent,
2671 [elf,2,16,0], [--fatal-warnings],
2672 [.section .text,"axG",%progbits,.foo,comdat])
2673 if test $gcc_cv_as_comdat_group_percent = yes; then
2674 gcc_cv_as_comdat_group_group=no
2677 # Sun as uses a completely different syntax.
2682 .group foo,".text%foo",#comdat
2683 .section ".text%foo", #alloc,#execinstr,#progbits
2688 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2690 .group foo,.text%foo,#comdat
2691 .section .text%foo, "ax", @progbits
2697 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2698 gcc_cv_as_comdat_group_group,
2704 if test x"$ld_is_gold" = xyes; then
2706 elif test $in_tree_ld = yes ; then
2708 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2709 && test $in_tree_ld_is_elf = yes; then
2712 elif echo "$ld_ver" | grep GNU > /dev/null; then
2714 if test 0"$ld_date" -lt 20050308; then
2715 if test -n "$ld_date"; then
2716 # If there was date string, but was earlier than 2005-03-08, fail
2718 elif test "$ld_vers_major" -lt 2; then
2720 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2727 *-*-solaris2.1[1-9]*)
2729 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2730 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2733 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2734 # least ld version 1.2267.
2735 if test "$ld_vers_major" -gt 1; then
2737 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2739 elif test "$ld_vers_minor" -ge 2267; then
2744 # Assume linkers other than GNU ld don't support COMDAT group.
2750 # Allow overriding the automatic COMDAT group tests above.
2751 AC_ARG_ENABLE(comdat,
2752 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2753 [comdat_group="$enable_comdat"])
2754 if test $comdat_group = no; then
2755 gcc_cv_as_comdat_group=no
2756 gcc_cv_as_comdat_group_percent=no
2757 gcc_cv_as_comdat_group_group=no
2759 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2760 [`if test $gcc_cv_as_comdat_group = yes \
2761 || test $gcc_cv_as_comdat_group_percent = yes \
2762 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2763 [Define 0/1 if your assembler and linker support COMDAT groups.])
2765 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2766 gcc_cv_as_discriminator,
2770 .loc 1 1 0 discriminator 1],,
2771 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2772 [Define if your assembler supports the .loc discriminator sub-directive.])])
2774 # Thread-local storage - the check is heavily parameterized.
2783 .section ".tdata","awT",@progbits
2786 ldq $27,__tls_get_addr($29) !literal!1
2787 lda $16,foo($29) !tlsgd!1
2788 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2789 ldq $27,__tls_get_addr($29) !literal!2
2790 lda $16,foo($29) !tlsldm!2
2791 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2792 ldq $1,foo($29) !gotdtprel
2793 ldah $2,foo($29) !dtprelhi
2794 lda $3,foo($2) !dtprello
2795 lda $4,foo($29) !dtprel
2796 ldq $1,foo($29) !gottprel
2797 ldah $2,foo($29) !tprelhi
2798 lda $3,foo($2) !tprello
2799 lda $4,foo($29) !tprel'
2802 tls_as_opt=--fatal-warnings
2804 cris-*-*|crisv32-*-*)
2806 .section ".tdata","awT",@progbits
2813 tls_as_opt=--fatal-warnings
2817 .section ".tdata","awT",@progbits
2829 .section ".tdata","awT",@progbits
2833 addil LT%foo-$tls_gdidx$,gp
2834 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2837 addil LT%foo-$tls_ldidx$,gp
2839 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2840 addil LR%foo-$tls_dtpoff$,%ret0
2841 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2843 addil LT%foo-$tls_ieoff$,gp
2844 ldw RT%foo-$tls_ieoff$(%r1),%t2
2847 addil LR%foo-$tls_leoff$,%t1
2848 ldo RR%foo-$tls_leoff$(%r1),%t2'
2851 tls_as_opt=--fatal-warnings
2855 .section ".tdata","awT",%progbits
2866 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2868 i[34567]86-*-solaris2.*)
2870 tga_func=___tls_get_addr
2872 x86_64-*-solaris2.1[0-9]*)
2874 tga_func=__tls_get_addr
2880 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2882 .section .tdata,"awt",@progbits'
2886 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2887 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2891 .section ".tdata","awT",@progbits'
2894 tls_as_opt="--fatal-warnings"
2896 conftest_s="$conftest_s
2900 leal foo@tlsgd(,%ebx,1), %eax
2901 leal foo@tlsldm(%ebx), %eax
2902 leal foo@dtpoff(%eax), %edx
2903 movl foo@gottpoff(%ebx), %eax
2904 subl foo@gottpoff(%ebx), %eax
2905 addl foo@gotntpoff(%ebx), %eax
2906 movl foo@indntpoff, %eax
2907 movl \$foo@tpoff, %eax
2908 subl \$foo@tpoff, %eax
2909 leal foo@ntpoff(%ecx), %eax"
2913 .section ".tdata","awT",@progbits
2917 leaq foo@TLSGD(%rip), %rdi
2918 leaq foo@TLSLD(%rip), %rdi
2919 leaq foo@DTPOFF(%rax), %rdx
2920 movq foo@GOTTPOFF(%rip), %rax
2921 movq $foo@TPOFF, %rax'
2924 tls_as_opt=--fatal-warnings
2928 .section ".tdata","awT",@progbits
2931 addl r16 = @ltoff(@dtpmod(foo#)), gp
2932 addl r17 = @ltoff(@dtprel(foo#)), gp
2933 addl r18 = @ltoff(@tprel(foo#)), gp
2934 addl r19 = @dtprel(foo#), gp
2935 adds r21 = @dtprel(foo#), r13
2936 movl r23 = @dtprel(foo#)
2937 addl r20 = @tprel(foo#), gp
2938 adds r22 = @tprel(foo#), r13
2939 movl r24 = @tprel(foo#)'
2942 tls_as_opt=--fatal-warnings
2946 .section .tdata,"awT",@progbits
2950 addiu $4, $28, %tlsgd(x)
2951 addiu $4, $28, %tlsldm(x)
2952 lui $4, %dtprel_hi(x)
2953 addiu $4, $4, %dtprel_lo(x)
2954 lw $4, %gottprel(x)($28)
2955 lui $4, %tprel_hi(x)
2956 addiu $4, $4, %tprel_lo(x)'
2959 tls_as_opt='-32 --fatal-warnings'
2963 .section .tdata,"awT",@progbits
2968 move.l x@TLSGD(%a5),%a0
2969 move.l x@TLSLDM(%a5),%a0
2970 move.l x@TLSLDO(%a5),%a0
2971 move.l x@TLSIE(%a5),%a0
2972 move.l x@TLSLE(%a5),%a0'
2975 tls_as_opt='--fatal-warnings'
2979 .section ".tdata","awT",@progbits
2987 addi 3,31,ld0@got@tlsgd
2989 addi 3,31,x1@got@tlsld
2992 addis 9,3,x2@dtprel@ha
2993 addi 9,9,x2@dtprel@l
2994 lwz 9,x3@got@tprel(31)
2997 addis 9,2,x2@tprel@ha
2998 addi 9,9,x2@tprel@l'
3001 tls_as_opt="-a32 --fatal-warnings"
3005 .section ".tdata","awT",@progbits
3013 addi 3,2,ld0@got@tlsgd
3019 addi 3,2,x1@got@tlsld
3025 addis 9,3,x2@dtprel@ha
3026 addi 9,9,x2@dtprel@l
3029 ld 9,x3@got@dtprel(2)
3035 tls_as_opt="-a64 --fatal-warnings"
3039 .section ".tdata","awT",@progbits
3048 l %r1,foo@GOTNTPOFF(%r12)
3049 l %r1,0(%r1):tls_load:foo
3050 bas %r14,0(%r1,%r13):tls_gdcall:foo
3051 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3054 tls_as_opt="-m31 --fatal-warnings"
3058 .section ".tdata","awT",@progbits
3066 lg %r1,foo@GOTNTPOFF(%r12)
3067 larl %r1,foo@INDNTPOFF
3068 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3069 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3072 tls_as_opt="-m64 -Aesame --fatal-warnings"
3074 sh-*-* | sh[34]-*-*)
3076 .section ".tdata","awT",@progbits
3086 tls_as_opt=--fatal-warnings
3090 sparc*-sun-solaris2.*)
3092 tga_func=__tls_get_addr
3098 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3100 .section ".tdata",#alloc,#write,#tls'
3105 .section ".tdata","awT",@progbits'
3108 tls_as_opt="-32 --fatal-warnings"
3110 conftest_s="$conftest_s
3113 sethi %tgd_hi22(foo), %o0
3114 add %o0, %tgd_lo10(foo), %o1
3115 add %l7, %o1, %o0, %tgd_add(foo)
3116 call __tls_get_addr, %tgd_call(foo)
3117 sethi %tldm_hi22(foo), %l1
3118 add %l1, %tldm_lo10(foo), %l2
3119 add %l7, %l2, %o0, %tldm_add(foo)
3120 call __tls_get_addr, %tldm_call(foo)
3121 sethi %tldo_hix22(foo), %l3
3122 xor %l3, %tldo_lox10(foo), %l4
3123 add %o0, %l4, %l5, %tldo_add(foo)
3124 sethi %tie_hi22(foo), %o3
3125 add %o3, %tie_lo10(foo), %o3
3126 ld [%l7 + %o3], %o2, %tie_ld(foo)
3127 add %g7, %o2, %o4, %tie_add(foo)
3128 sethi %tle_hix22(foo), %l1
3129 xor %l1, %tle_lox10(foo), %o5
3130 ld [%g7 + %o5], %o1"
3134 .section ".tdata","awT",@progbits
3137 movi a8, foo@TLSFUNC
3138 movi a10, foo@TLSARG
3139 callx8.tls a8, foo@TLSCALL'
3146 if test "x$enable_tls" = xno ; then
3147 : # TLS explicitly disabled.
3148 elif test "x$enable_tls" = xyes ; then
3149 set_have_as_tls=yes # TLS explicitly enabled.
3150 elif test -z "$tls_first_major"; then
3151 : # If we don't have a check, assume no support.
3153 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3154 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3155 [set_have_as_tls=yes])
3159 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3160 # with TLS support are in use, native TLS cannot work.
3164 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3165 # gld with TLS support are in use, native TLS cannot work.
3168 # TLS was introduced in the Solaris 9 FCS release and backported to
3169 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3170 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3171 # ld and GCC don't support any longer.
3173 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3175 # Check ld and ld.so.1 TLS support.
3176 if echo "$ld_ver" | grep GNU > /dev/null; then
3177 # Assume all interesting versions of GNU ld have TLS support.
3178 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3182 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3184 min_tls_ld_vers_minor=280
3186 # Solaris 8/SPARC ld has TLS support since version 1.272.
3187 sparc*-*-solaris2.8)
3188 min_tls_ld_vers_minor=272
3190 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3192 min_tls_ld_vers_minor=374
3194 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3195 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3196 min_tls_ld_vers_minor=343
3199 if test "$ld_vers_major" -gt 1 || \
3200 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3206 AC_MSG_RESULT($ld_tls_support)
3209 save_LDFLAGS="$LDFLAGS"
3213 AC_MSG_CHECKING(alternate thread library)
3215 # TLS support was backported to Solaris 8 patches, but only lives in
3216 # the alternate thread library which became the default in Solaris 9.
3217 # We want to always use that, irrespective of TLS support.
3219 # Take multilib subdir into account. There's no spec to handle
3220 # this. The 64 symlink exists since Solaris 8.
3221 lwp_dir=/usr/lib/lwp
3222 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3223 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3230 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3231 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3232 [Define to the linker flags to use for -pthread.])
3233 AC_MSG_RESULT($lwp_dir)
3235 AC_MSG_CHECKING(library containing $tga_func)
3236 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3237 # (32-bit x86) only lived in libthread, so check for that. Keep
3238 # set_have_as_tls if found, disable if not.
3239 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3240 # Clear LIBS if we cannot support TLS.
3241 if test $set_have_as_tls = no; then
3244 # Always define LIB_TLS_SPEC, even without TLS support.
3245 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3246 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3247 AC_MSG_RESULT($LIBS)
3250 LDFLAGS="$save_LDFLAGS"
3253 if test $set_have_as_tls = yes ; then
3254 AC_DEFINE(HAVE_AS_TLS, 1,
3255 [Define if your assembler and linker support thread-local storage.])
3258 # Target-specific assembler checks.
3260 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3261 gcc_cv_ld_static_dynamic=no
3262 gcc_cv_ld_static_option='-Bstatic'
3263 gcc_cv_ld_dynamic_option='-Bdynamic'
3264 if test $in_tree_ld = yes ; then
3265 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3266 gcc_cv_ld_static_dynamic=yes
3268 elif test x$gcc_cv_ld != x; then
3269 # Check if linker supports -Bstatic/-Bdynamic option
3270 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3271 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3272 gcc_cv_ld_static_dynamic=yes
3275 # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic.
3277 gcc_cv_ld_static_dynamic=yes
3278 gcc_cv_ld_static_option="-noso"
3279 gcc_cv_ld_dynamic_option="-so_archive"
3281 # HP-UX ld uses -a flags to select between shared and archive.
3283 if test x"$gnu_ld" = xno; then
3284 gcc_cv_ld_static_dynamic=yes
3285 gcc_cv_ld_static_option="-aarchive_shared"
3286 gcc_cv_ld_dynamic_option="-adefault"
3289 # IRIX 6 ld supports -Bstatic/-Bdynamic.
3291 gcc_cv_ld_static_dynamic=yes
3293 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3295 gcc_cv_ld_static_dynamic=yes
3300 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3301 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3302 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3303 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3304 [Define to the linker option to disable use of shared objects.])
3305 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3306 [Define to the linker option to enable use of shared objects.])
3308 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3310 if test x"$demangler_in_ld" = xyes; then
3311 AC_MSG_CHECKING(linker --demangle support)
3312 gcc_cv_ld_demangle=no
3313 if test $in_tree_ld = yes; then
3314 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3315 gcc_cv_ld_demangle=yes
3317 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3318 # Check if the GNU linker supports --demangle option
3319 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3320 gcc_cv_ld_demangle=yes
3323 if test x"$gcc_cv_ld_demangle" = xyes; then
3324 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3325 [Define if your linker supports --demangle option.])
3327 AC_MSG_RESULT($gcc_cv_ld_demangle)
3330 AC_MSG_CHECKING(linker plugin support)
3332 if test -f liblto_plugin.la; then
3333 save_ld_ver="$ld_ver"
3334 save_ld_vers_major="$ld_vers_major"
3335 save_ld_vers_minor="$ld_vers_minor"
3336 save_ld_is_gold="$ld_is_gold"
3340 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3342 # FIXME: ld_is_gold?
3343 ld_vers_major="$gcc_cv_gld_major_version"
3344 ld_vers_minor="$gcc_cv_gld_minor_version"
3346 # Determine plugin linker version.
3347 # FIXME: Partial duplicate from above, generalize.
3349 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3350 if echo "$ld_ver" | grep GNU > /dev/null; then
3351 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3353 ld_vers=`echo $ld_ver | sed -n \
3354 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3356 ld_vers=`echo $ld_ver | sed -n \
3357 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3359 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3360 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3365 # Determine plugin support.
3366 if echo "$ld_ver" | grep GNU > /dev/null; then
3367 # Require GNU ld or gold 2.21+ for plugin support by default.
3368 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3370 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3371 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3376 ld_ver="$save_ld_ver"
3377 ld_vers_major="$save_ld_vers_major"
3378 ld_vers_minor="$save_ld_vers_minor"
3379 ld_is_gold="$save_ld_is_gold"
3381 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3382 [Define to the level of your linker's plugin support.])
3383 AC_MSG_RESULT($gcc_cv_lto_plugin)
3386 # All TARGET_ABI_OSF targets.
3387 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3388 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3389 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3392 extbl $3, $2, $3 !lituse_bytoff!1
3393 ldq $2, a($29) !literal!1
3394 ldq $4, b($29) !literal!2
3395 ldq_u $3, 0($2) !lituse_base!1
3396 ldq $27, f($29) !literal!5
3397 jsr $26, ($27), f !lituse_jsr!5
3398 ldah $29, 0($26) !gpdisp!3
3399 lda $0, c($29) !gprel
3400 ldah $1, d($29) !gprelhigh
3401 lda $1, d($1) !gprellow
3402 lda $29, 0($29) !gpdisp!3],,
3403 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3404 [Define if your assembler supports explicit relocations.])])
3405 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3406 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3409 ldq $27, a($29) !literal!1
3410 jsr $26, ($27), a !lituse_jsrdirect!1],,
3411 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3412 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3416 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3417 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3418 [-no-mul-bug-abort], [.text],,
3419 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3420 [Define if your assembler supports the -no-mul-bug-abort option.])])
3424 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3425 [.register %g2, #scratch],,
3426 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3427 [Define if your assembler supports .register.])])
3429 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3431 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3432 [Define if your assembler supports -relax option.])])
3434 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3435 gcc_cv_as_sparc_gotdata_op,,
3442 sethi %gdop_hix22(foo), %g1
3443 xor %g1, %gdop_lox10(foo), %g1
3444 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3445 [if test x$gcc_cv_ld != x \
3446 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3447 if test x$gcc_cv_objdump != x; then
3448 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3449 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3450 gcc_cv_as_sparc_gotdata_op=no
3452 gcc_cv_as_sparc_gotdata_op=yes
3457 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3458 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3460 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3461 gcc_cv_as_sparc_ua_pcrel,,
3469 .uaword %r_disp32(foo)],
3470 [if test x$gcc_cv_ld != x \
3471 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3472 gcc_cv_as_sparc_ua_pcrel=yes
3475 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3476 [Define if your assembler and linker support unaligned PC relative relocs.])
3478 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3479 gcc_cv_as_sparc_ua_pcrel_hidden,,
3484 .uaword %r_disp32(foo)
3485 .byte 0x32, 0x33, 0x34
3490 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3491 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3492 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3493 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3494 if $gcc_cv_objdump -R conftest 2> /dev/null \
3495 | grep 'DISP32' > /dev/null 2>&1; then
3498 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3502 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3503 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3504 ]) # unaligned pcrel relocs
3506 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3507 gcc_cv_as_sparc_offsetable_lo10,,
3510 or %g1, %lo(ab) + 12, %g1
3511 or %g1, %lo(ab + 12), %g1],
3512 [if test x$gcc_cv_objdump != x \
3513 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3514 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3515 gcc_cv_as_sparc_offsetable_lo10=yes
3517 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3518 [Define if your assembler supports offsetable %lo().])])
3520 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3521 gcc_cv_as_sparc_fmaf,,
3524 .register %g2, #scratch
3525 .register %g3, #scratch
3527 fmaddd %f0, %f2, %f4, %f6
3528 addxccc %g1, %g2, %g3
3529 fsrl32 %f2, %f4, %f8
3530 fnaddd %f10, %f12, %f14],,
3531 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3532 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3536 i[34567]86-*-* | x86_64-*-*)
3540 # Full C++ conformance when using a shared libstdc++-v3 requires some
3541 # support from the Cygwin DLL, which in more recent versions exports
3542 # wrappers to aid in interposing and redirecting operators new, delete,
3543 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3544 # are configuring for a version of Cygwin that exports the wrappers.
3545 if test x$host = x$target; then
3546 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3548 # Can't check presence of libc functions during cross-compile, so
3549 # we just have to assume we're building for an up-to-date target.
3550 gcc_ac_cygwin_dll_wrappers=yes
3552 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3553 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3554 [Define if you want to generate code by default that assumes that the
3555 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3558 cygwin* | pe | mingw32*)
3559 # Recent binutils allows the three-operand form of ".comm" on PE. This
3560 # definition is used unconditionally to initialise the default state of
3561 # the target option variable that governs usage of the feature.
3562 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3563 [2,19,52],,[.comm foo,1,32])
3564 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3565 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3566 [Define if your assembler supports specifying the alignment
3567 of objects allocated using the GAS .comm command.])
3568 # Used for DWARF 2 in PE
3569 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3570 gcc_cv_as_ix86_pe_secrel32,
3576 [if test x$gcc_cv_ld != x \
3577 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3578 gcc_cv_as_ix86_pe_secrel32=yes
3581 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3582 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3583 # Test if the assembler supports the extended form of the .section
3584 # directive that specifies section alignment. LTO support uses this,
3585 # but normally only after installation, so we warn but don't fail the
3586 # configure if LTO is enabled but the assembler does not support it.
3587 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3588 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3589 if test x$gcc_cv_as_section_has_align != xyes; then
3590 case ",$enable_languages," in
3592 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3596 # Test if the assembler supports the section flag 'e' for specifying
3597 # an excluded section.
3598 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3602 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3603 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3604 [Define if your assembler supports specifying the section flag e.])
3608 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3609 gcc_cv_as_ix86_filds,,,
3610 [filds mem; fists mem],,
3611 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3612 [Define if your assembler uses filds and fists mnemonics.])])
3614 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3615 gcc_cv_as_ix86_fildq,,,
3616 [fildq mem; fistpq mem],,
3617 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3618 [Define if your assembler uses fildq and fistq mnemonics.])])
3620 gcc_GAS_CHECK_FEATURE([cmov syntax],
3621 gcc_cv_as_ix86_cmov_sun_syntax,,,
3622 [cmovl.l %edx, %eax],,
3623 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3624 [Define if your assembler supports the Sun syntax for cmov.])])
3626 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3627 gcc_cv_as_ix86_ffreep,,,
3629 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3630 [Define if your assembler supports the ffreep mnemonic.])])
3632 gcc_GAS_CHECK_FEATURE([.quad directive],
3633 gcc_cv_as_ix86_quad,,,
3635 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3636 [Define if your assembler supports the .quad directive.])])
3638 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3639 gcc_cv_as_ix86_sahf,,,
3642 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3643 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3645 gcc_GAS_CHECK_FEATURE([swap suffix],
3646 gcc_cv_as_ix86_swap,,,
3647 [movl.s %esp, %ebp],,
3648 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3649 [Define if your assembler supports the swap suffix.])])
3651 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3652 gcc_cv_as_ix86_diff_sect_delta,,,
3660 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3661 [Define if your assembler supports the subtraction of symbols in different sections.])])
3663 # These two are used unconditionally by i386.[ch]; it is to be defined
3664 # to 1 if the feature is present, 0 otherwise.
3665 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3666 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3672 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3673 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3674 [Define true if the assembler supports '.long foo@GOTOFF'.])
3676 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3677 gcc_cv_as_ix86_rep_lock_prefix,,,
3679 lock addl %edi, (%eax,%esi)
3680 lock orl $0, (%esp)],,
3681 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3682 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3684 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3685 gcc_cv_as_ix86_tlsgdplt,,,
3686 [call tls_gd@tlsgdplt],,
3687 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3688 [Define if your assembler supports @tlsgdplt.])])
3690 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3691 gcc_cv_as_ix86_tlsldmplt,,,
3692 [call tls_ld@tlsldmplt],,
3693 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3694 [Define if your assembler supports @tlsldmplt.])])
3699 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3700 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3702 addl r15 = @ltoffx(x#), gp
3704 ld8.mov r16 = [[r15]], x#],,
3705 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3706 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3712 *-*-aix*) conftest_s=' .machine "pwr5"
3716 gcc_GAS_CHECK_FEATURE([.machine directive support],
3717 gcc_cv_as_machine_directive,,,
3718 [ .machine ppc7400])
3719 if test x$gcc_cv_as_machine_directive != xyes; then
3720 echo "*** This target requires an assembler supporting \".machine\"" >&2
3721 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3722 test x$build = x$target && exit 1
3726 *) conftest_s=' .machine power4
3731 gcc_GAS_CHECK_FEATURE([mfcr field support],
3732 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3734 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3735 [Define if your assembler supports mfcr field.])])
3738 *-*-aix*) conftest_s=' .machine "pwr5"
3741 *) conftest_s=' .machine power5
3746 gcc_GAS_CHECK_FEATURE([popcntb support],
3747 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3749 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3750 [Define if your assembler supports popcntb field.])])
3753 *-*-aix*) conftest_s=' .machine "pwr5x"
3756 *) conftest_s=' .machine power5
3761 gcc_GAS_CHECK_FEATURE([fp round support],
3762 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3764 [AC_DEFINE(HAVE_AS_FPRND, 1,
3765 [Define if your assembler supports fprnd.])])
3768 *-*-aix*) conftest_s=' .machine "pwr6"
3771 *) conftest_s=' .machine power6
3776 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3777 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3779 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3780 [Define if your assembler supports mffgpr and mftgpr.])])
3783 *-*-aix*) conftest_s=' .csect .text[[PR]]
3785 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3789 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3790 *) conftest_s=' .text
3792 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3795 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3796 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3798 [AC_DEFINE(HAVE_AS_REL16, 1,
3799 [Define if your assembler supports R_PPC_REL16 relocs.])])
3802 *-*-aix*) conftest_s=' .machine "pwr6"
3805 *) conftest_s=' .machine power6
3810 gcc_GAS_CHECK_FEATURE([compare bytes support],
3811 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3813 [AC_DEFINE(HAVE_AS_CMPB, 1,
3814 [Define if your assembler supports cmpb.])])
3817 *-*-aix*) conftest_s=' .machine "pwr6"
3820 *) conftest_s=' .machine power6
3825 gcc_GAS_CHECK_FEATURE([decimal float support],
3826 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3828 [AC_DEFINE(HAVE_AS_DFP, 1,
3829 [Define if your assembler supports DFP instructions.])])
3832 *-*-aix*) conftest_s=' .machine "pwr7"
3835 *) conftest_s=' .machine power7
3840 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3841 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3843 [AC_DEFINE(HAVE_AS_VSX, 1,
3844 [Define if your assembler supports VSX instructions.])])
3847 *-*-aix*) conftest_s=' .machine "pwr7"
3850 *) conftest_s=' .machine power7
3855 gcc_GAS_CHECK_FEATURE([popcntd support],
3856 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3858 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3859 [Define if your assembler supports POPCNTD instructions.])])
3862 *-*-aix*) conftest_s=' .csect .text[[PR]]
3864 *) conftest_s=' .text
3868 gcc_GAS_CHECK_FEATURE([lwsync support],
3869 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3871 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3872 [Define if your assembler supports LWSYNC instructions.])])
3875 *-*-aix*) conftest_s=' .machine "476"
3878 *) conftest_s=' .machine "476"
3883 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3884 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3886 [AC_DEFINE(HAVE_AS_DCI, 1,
3887 [Define if your assembler supports the DCI/ICI instructions.])])
3889 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3890 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3891 [.gnu_attribute 4,1],,
3892 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3893 [Define if your assembler supports .gnu_attribute.])])
3895 gcc_GAS_CHECK_FEATURE([tls marker support],
3896 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3897 [ bl __tls_get_addr(x@tlsgd)],,
3898 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3899 [Define if your assembler supports arg info for __tls_get_addr.])])
3903 gcc_GAS_CHECK_FEATURE([.ref support],
3904 gcc_cv_as_aix_ref, [2.21.0],,
3905 [ .csect stuff[[rw]]
3911 [AC_DEFINE(HAVE_AS_REF, 1,
3912 [Define if your assembler supports .ref])])
3918 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3919 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3920 [ lw $4,%gp_rel(foo)($4)],,
3921 [if test x$target_cpu_default = x
3922 then target_cpu_default=MASK_EXPLICIT_RELOCS
3923 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3925 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3926 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3927 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3928 [Define if the assembler understands -mno-shared.])])
3930 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3931 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3932 [.gnu_attribute 4,1],,
3933 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3934 [Define if your assembler supports .gnu_attribute.])])
3936 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3937 gcc_cv_as_mips_dtprelword, [2,18,0],,
3938 [.section .tdata,"awT",@progbits
3942 .dtprelword x+0x8000],,
3943 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3944 [Define if your assembler supports .dtprelword.])])
3946 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3947 gcc_cv_as_mips_dspr1_mult,,,
3957 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3958 [Define if your assembler supports DSPR1 mult.])])
3960 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3961 gcc_cv_as_ld_jalr_reloc=no
3962 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3963 if test $in_tree_ld = yes ; then
3964 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3965 && test $in_tree_ld_is_elf = yes; then
3966 gcc_cv_as_ld_jalr_reloc=yes
3968 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3969 echo ' .ent x' > conftest.s
3970 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3971 echo ' ld $25,%call16(y)($28)' >> conftest.s
3972 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3973 echo '1: jalr $25' >> conftest.s
3974 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3975 echo '1: jalr $25' >> conftest.s
3976 echo ' .end x' >> conftest.s
3977 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3978 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3979 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3980 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3981 gcc_cv_as_ld_jalr_reloc=yes
3987 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3988 if test x$target_cpu_default = x; then
3989 target_cpu_default=MASK_RELAX_PIC_CALLS
3991 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3994 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3996 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3997 [gcc_cv_ld_mips_personality_relaxation],
3998 [gcc_cv_ld_mips_personality_relaxation=no
3999 if test $in_tree_ld = yes ; then
4000 if test "$gcc_cv_gld_major_version" -eq 2 \
4001 -a "$gcc_cv_gld_minor_version" -ge 21 \
4002 -o "$gcc_cv_gld_major_version" -gt 2; then
4003 gcc_cv_ld_mips_personality_relaxation=yes
4005 elif test x$gcc_cv_as != x \
4006 -a x$gcc_cv_ld != x \
4007 -a x$gcc_cv_readelf != x ; then
4008 cat > conftest.s <<EOF
4010 .cfi_personality 0x80,indirect_ptr
4017 .section .data,"aw",@progbits
4021 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4022 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4023 if $gcc_cv_readelf -d conftest 2>&1 \
4024 | grep TEXTREL > /dev/null 2>&1; then
4026 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4027 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4030 gcc_cv_ld_mips_personality_relaxation=yes
4034 rm -f conftest.s conftest.o conftest])
4035 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4036 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4037 [Define if your linker can relax absolute .eh_frame personality
4038 pointers into PC-relative form.])
4043 # Mips and HP-UX need the GNU assembler.
4044 # Linux on IA64 might be able to use the Intel assembler.
4047 mips*-*-* | *-*-hpux* )
4048 if test x$gas_flag = xyes \
4049 || test x"$host" != x"$build" \
4050 || test ! -x "$gcc_cv_as" \
4051 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4054 echo "*** This configuration requires the GNU assembler" >&2
4060 # ??? Not all targets support dwarf2 debug_line, even within a version
4061 # of gas. Moreover, we need to emit a valid instruction to trigger any
4062 # info to the output file. So, as supported targets are added to gas 2.11,
4063 # add some instruction here to (also) show we expect this might work.
4064 # ??? Once 2.11 is released, probably need to add first known working
4065 # version to the per-target configury.
4067 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4068 | pa | rs6000 | score | sparc | spu | xstormy16 | xtensa)
4078 if test x"$insn" != x; then
4080 .file 1 \"conftest.s\"
4083 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4084 gcc_cv_as_dwarf2_debug_line,
4085 [elf,2,11,0],, [$conftest_s],
4086 [if test x$gcc_cv_objdump != x \
4087 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4088 | grep debug_line > /dev/null 2>&1; then
4089 gcc_cv_as_dwarf2_debug_line=yes
4092 # The .debug_line file table must be in the exact order that
4093 # we specified the files, since these indices are also used
4094 # by DW_AT_decl_file. Approximate this test by testing if
4095 # the assembler bitches if the same index is assigned twice.
4096 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4097 gcc_cv_as_dwarf2_file_buggy,,,
4101 if test $gcc_cv_as_dwarf2_debug_line = yes \
4102 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4103 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4104 [Define if your assembler supports dwarf2 .file/.loc directives,
4105 and preserves file table indices exactly as given.])
4108 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4109 gcc_cv_as_gdwarf2_flag,
4110 [elf,2,11,0], [--gdwarf2], [$insn],,
4111 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4112 [Define if your assembler supports the --gdwarf2 option.])])
4114 gcc_GAS_CHECK_FEATURE([--gstabs option],
4115 gcc_cv_as_gstabs_flag,
4116 [elf,2,11,0], [--gstabs], [$insn],
4117 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4118 # and warns about it, but still exits successfully. So check for
4120 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4122 else gcc_cv_as_gstabs_flag=yes
4124 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4125 [Define if your assembler supports the --gstabs option.])])
4127 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4128 gcc_cv_as_debug_prefix_map_flag,
4129 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4130 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4131 [Define if your assembler supports the --debug-prefix-map option.])])
4134 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4137 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4138 [Define if your assembler supports .lcomm with an alignment field.])])
4140 AC_ARG_ENABLE(gnu-unique-object,
4141 [AS_HELP_STRING([--enable-gnu-unique-object],
4142 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4143 [case $enable_gnu_unique_object in
4145 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4146 Valid choices are 'yes' and 'no'.]) ;;
4148 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4150 [.type foo, @gnu_unique_object],,
4151 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4152 [[if test x$host = x$build -a x$host = x$target &&
4153 ldd --version 2>/dev/null &&
4154 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4155 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4156 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4157 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4158 if test "$glibcnum" -ge 2011 ; then
4159 enable_gnu_unique_object=yes
4162 if test x$enable_gnu_unique_object = xyes; then
4163 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4164 [Define if your assembler supports @gnu_unique_object.])
4167 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4168 [gcc_cv_as_line_zero],
4169 [gcc_cv_as_line_zero=no
4170 if test $in_tree_gas = yes; then
4171 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4172 elif test "x$gcc_cv_as" != x; then
4173 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4174 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4175 test "x`cat conftest.out`" = x
4177 gcc_cv_as_line_zero=yes
4179 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4180 cat conftest.s >&AS_MESSAGE_LOG_FD
4181 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4182 cat conftest.out >&AS_MESSAGE_LOG_FD
4184 rm -f conftest.o conftest.s conftest.out
4186 if test "x$gcc_cv_as_line_zero" = xyes; then
4187 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4188 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4191 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4192 gcc_cv_ld_eh_frame_hdr=no
4193 if test $in_tree_ld = yes ; then
4194 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4195 && test $in_tree_ld_is_elf = yes; then
4196 gcc_cv_ld_eh_frame_hdr=yes
4198 elif test x$gcc_cv_ld != x; then
4199 if echo "$ld_ver" | grep GNU > /dev/null; then
4200 # Check if linker supports --eh-frame-hdr option
4201 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4202 gcc_cv_ld_eh_frame_hdr=yes
4207 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4208 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4209 gcc_cv_ld_eh_frame_hdr=yes
4215 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4216 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4217 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4218 [Define if your linker supports .eh_frame_hdr.])
4220 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4222 AC_MSG_CHECKING(linker position independent executable support)
4224 if test $in_tree_ld = yes ; then
4225 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4226 && test $in_tree_ld_is_elf = yes; then
4229 elif test x$gcc_cv_ld != x; then
4230 # Check if linker supports -pie option
4231 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4235 if test x"$gcc_cv_ld_pie" = xyes; then
4236 AC_DEFINE(HAVE_LD_PIE, 1,
4237 [Define if your linker supports -pie option.])
4239 AC_MSG_RESULT($gcc_cv_ld_pie)
4241 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4242 gcc_cv_ld_eh_gc_sections=no
4243 if test $in_tree_ld = yes ; then
4244 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4245 && test $in_tree_ld_is_elf = yes; then
4246 gcc_cv_ld_eh_gc_sections=yes
4248 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4249 cat > conftest.s <<EOF
4252 .type _start, @function
4255 .size _start, .-_start
4256 .section .text.foo,"ax",@progbits
4257 .type foo, @function
4261 .section .gcc_except_table.foo,"a",@progbits
4264 .section .eh_frame,"a",@progbits
4267 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4268 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4269 | grep "gc-sections option ignored" > /dev/null; then
4270 gcc_cv_ld_eh_gc_sections=no
4271 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4272 | grep gcc_except_table > /dev/null; then
4273 gcc_cv_ld_eh_gc_sections=yes
4274 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4275 if test x$gcc_cv_as_comdat_group != xyes; then
4276 gcc_cv_ld_eh_gc_sections=no
4277 cat > conftest.s <<EOF
4280 .type _start, @function
4283 .size _start, .-_start
4284 .section .gnu.linkonce.t.foo,"ax",@progbits
4285 .type foo, @function
4289 .section .gcc_except_table.foo,"a",@progbits
4292 .section .eh_frame,"a",@progbits
4295 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4296 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4297 | grep "gc-sections option ignored" > /dev/null; then
4298 gcc_cv_ld_eh_gc_sections=no
4299 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4300 | grep gcc_except_table > /dev/null; then
4301 gcc_cv_ld_eh_gc_sections=yes
4307 rm -f conftest.s conftest.o conftest
4311 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4312 gcc_cv_ld_eh_gc_sections=no
4315 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4316 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4317 [Define if your linker supports garbage collection of
4318 sections in presence of EH frames.])
4320 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4322 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4323 gcc_cv_ld_eh_gc_sections_bug=no
4324 if test $in_tree_ld = yes ; then
4325 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4326 && test $in_tree_ld_is_elf = yes; then
4327 gcc_cv_ld_eh_gc_sections_bug=yes
4329 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x -a x$gcc_cv_as_comdat_group = xyes; then
4330 gcc_cv_ld_eh_gc_sections_bug=yes
4331 cat > conftest.s <<EOF
4334 .type _start, @function
4337 .size _start, .-_start
4338 .section .text.startup.foo,"ax",@progbits
4339 .type foo, @function
4343 .section .gcc_except_table.foo,"a",@progbits
4346 .section .eh_frame,"a",@progbits
4349 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4350 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4351 | grep "gc-sections option ignored" > /dev/null; then
4353 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4354 | grep gcc_except_table > /dev/null; then
4355 gcc_cv_ld_eh_gc_sections_bug=no
4358 rm -f conftest.s conftest.o conftest
4360 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4361 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4362 [Define if your linker has buggy garbage collection of
4363 sections support when .text.startup.foo like sections are used.])
4365 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4371 AC_CACHE_CHECK(linker --as-needed support,
4372 gcc_cv_ld_as_needed,
4373 [gcc_cv_ld_as_needed=no
4374 if test $in_tree_ld = yes ; then
4375 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4376 && test $in_tree_ld_is_elf = yes; then
4377 gcc_cv_ld_as_needed=yes
4379 elif test x$gcc_cv_ld != x; then
4380 # Check if linker supports --as-needed and --no-as-needed options
4381 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4382 gcc_cv_ld_as_needed=yes
4386 if test x"$gcc_cv_ld_as_needed" = xyes; then
4387 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4388 [Define if your linker supports --as-needed and --no-as-needed options.])
4391 case "$target:$tm_file" in
4392 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4393 AC_CACHE_CHECK(linker support for omitting dot symbols,
4394 gcc_cv_ld_no_dot_syms,
4395 [gcc_cv_ld_no_dot_syms=no
4396 if test $in_tree_ld = yes ; then
4397 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4398 gcc_cv_ld_no_dot_syms=yes
4400 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4401 cat > conftest1.s <<EOF
4405 cat > conftest2.s <<EOF
4406 .section ".opd","aw"
4411 .quad .LEfoo,.TOC.@tocbase,0
4417 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4418 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4419 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4420 gcc_cv_ld_no_dot_syms=yes
4422 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4425 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4426 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4427 [Define if your PowerPC64 linker only needs function descriptor syms.])
4430 AC_CACHE_CHECK(linker large toc support,
4431 gcc_cv_ld_large_toc,
4432 [gcc_cv_ld_large_toc=no
4433 if test $in_tree_ld = yes ; then
4434 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4435 gcc_cv_ld_large_toc=yes
4437 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4438 cat > conftest.s <<EOF
4439 .section ".tbss","awT",@nobits
4445 addis 9,13,ie0@got@tprel@ha
4446 ld 9,ie0@got@tprel@l(9)
4448 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4449 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4450 gcc_cv_ld_large_toc=yes
4452 rm -f conftest conftest.o conftest.s
4455 if test x"$gcc_cv_ld_large_toc" = xyes; then
4456 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4457 [Define if your PowerPC64 linker supports a large TOC.])
4462 AC_CACHE_CHECK(linker --build-id support,
4464 [gcc_cv_ld_buildid=no
4465 if test $in_tree_ld = yes ; then
4466 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4467 "$gcc_cv_gld_minor_version" -ge 18 -o \
4468 "$gcc_cv_gld_major_version" -gt 2 \
4469 && test $in_tree_ld_is_elf = yes; then
4470 gcc_cv_ld_buildid=yes
4472 elif test x$gcc_cv_ld != x; then
4473 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4474 gcc_cv_ld_buildid=yes
4477 if test x"$gcc_cv_ld_buildid" = xyes; then
4478 AC_DEFINE(HAVE_LD_BUILDID, 1,
4479 [Define if your linker supports --build-id.])
4482 AC_ARG_ENABLE(linker-build-id,
4483 [AS_HELP_STRING([--enable-linker-build-id],
4484 [compiler will always pass --build-id to linker])],
4486 enable_linker_build_id=no)
4488 if test x"$enable_linker_build_id" = xyes; then
4489 if test x"$gcc_cv_ld_buildid" = xyes; then
4490 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4491 [Define if gcc should always pass --build-id to linker.])
4493 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4497 # In binutils 2.21, GNU ld gained support for new emulations fully
4498 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4499 AC_CACHE_CHECK(linker *_sol2 emulation support,
4500 gcc_cv_ld_sol2_emulation,
4501 [gcc_cv_ld_sol2_emulation=no
4502 if test $in_tree_ld = yes ; then
4503 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4504 "$gcc_cv_gld_minor_version" -ge 21 -o \
4505 "$gcc_cv_gld_major_version" -gt 2 \
4506 && test $in_tree_ld_is_elf = yes; then
4507 gcc_cv_ld_sol2_emulation=yes
4509 elif test x$gcc_cv_ld != x; then
4510 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4511 grep _sol2 > /dev/null; then
4512 gcc_cv_ld_sol2_emulation=yes
4515 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4516 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4517 [Define if your linker supports the *_sol2 emulations.])
4520 AC_CACHE_CHECK(linker --sysroot support,
4522 [gcc_cv_ld_sysroot=no
4523 if test $in_tree_ld = yes ; then
4524 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4525 gcc_cv_ld_sysroot=yes
4527 elif test x$gcc_cv_ld != x; then
4528 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4529 gcc_cv_ld_sysroot=yes
4532 if test x"$gcc_cv_ld_sysroot" = xyes; then
4533 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4534 [Define if your linker supports --sysroot.])
4537 if test x$with_sysroot = x && test x$host = x$target \
4538 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4539 && test "$prefix" != "NONE"; then
4540 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4541 [Define to PREFIX/include if cpp should also search that directory.])
4544 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4545 if test "x$with_headers" != x; then
4546 target_header_dir=$with_headers
4547 elif test "x$with_sysroot" = x; then
4548 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4549 elif test "x$with_build_sysroot" != "x"; then
4550 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4551 elif test "x$with_sysroot" = xyes; then
4552 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4554 target_header_dir="${with_sysroot}${native_system_header_dir}"
4557 target_header_dir=${native_system_header_dir}
4560 # Test for stack protector support in target C library.
4561 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4562 gcc_cv_libc_provides_ssp,
4563 [gcc_cv_libc_provides_ssp=no
4565 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4566 [# glibc 2.4 and later provides __stack_chk_fail and
4567 # either __stack_chk_guard, or TLS access to stack guard canary.
4568 if test -f $target_header_dir/features.h \
4569 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4570 $target_header_dir/features.h > /dev/null; then
4571 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4572 $target_header_dir/features.h > /dev/null; then
4573 gcc_cv_libc_provides_ssp=yes
4574 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4575 $target_header_dir/features.h > /dev/null \
4576 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4577 $target_header_dir/features.h > /dev/null; then
4578 gcc_cv_libc_provides_ssp=yes
4579 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4580 $target_header_dir/features.h > /dev/null && \
4581 test -f $target_header_dir/bits/uClibc_config.h && \
4582 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4583 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4584 gcc_cv_libc_provides_ssp=yes
4589 # Avoid complicated tests (see
4590 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4591 # simply assert that glibc does provide this, which is true for all
4592 # realistically usable GNU/Hurd configurations.
4593 gcc_cv_libc_provides_ssp=yes;;
4594 *-*-darwin* | *-*-freebsd*)
4595 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4596 [echo "no __stack_chk_fail on this target"])
4598 *) gcc_cv_libc_provides_ssp=no ;;
4601 if test x$gcc_cv_libc_provides_ssp = xyes; then
4602 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4603 [Define if your target C library provides stack protector support])
4606 # Test for <sys/sdt.h> on the target.
4607 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4608 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4610 if test -f $target_header_dir/sys/sdt.h; then
4612 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4613 [Define if your target C library provides sys/sdt.h])
4615 AC_MSG_RESULT($have_sys_sdt_h)
4617 # Check if TFmode long double should be used by default or not.
4618 # Some glibc targets used DFmode long double, but with glibc 2.4
4619 # and later they can use TFmode.
4621 powerpc*-*-linux* | \
4625 AC_ARG_WITH(long-double-128,
4626 [AS_HELP_STRING([--with-long-double-128],
4627 [use 128-bit long double by default])],
4628 gcc_cv_target_ldbl128="$with_long_double_128",
4629 [[gcc_cv_target_ldbl128=no
4630 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4631 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4632 && gcc_cv_target_ldbl128=yes
4636 if test x$gcc_cv_target_ldbl128 = xyes; then
4637 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4638 [Define if TFmode long double should be the default])
4641 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4642 gcc_cv_target_dl_iterate_phdr=unknown
4645 # <link.h> needs both a dl_iterate_phdr declaration and support for
4646 # compilation with largefile support.
4647 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4648 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4649 gcc_cv_target_dl_iterate_phdr=yes
4651 gcc_cv_target_dl_iterate_phdr=no
4655 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4656 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4657 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4658 [Define if your target C library provides the `dl_iterate_phdr' function.])
4660 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4662 # Find out what GC implementation we want, or may, use.
4664 [AS_HELP_STRING([--with-gc={page,zone}],
4665 [choose the garbage collection mechanism to use
4666 with the compiler])],
4673 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4676 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4681 echo "Using $GGC for garbage collection."
4683 # Libraries to use on the host. This will normally be set by the top
4684 # level Makefile. Here we simply capture the value for our Makefile.
4685 if test -z "${HOST_LIBS+set}"; then
4690 # Use the system's zlib library.
4692 zlibinc="-I\$(srcdir)/../zlib"
4693 AC_ARG_WITH(system-zlib,
4694 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4701 dnl Very limited version of automake's enable-maintainer-mode
4703 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4704 dnl maintainer-mode is disabled by default
4705 AC_ARG_ENABLE(maintainer-mode,
4706 [AS_HELP_STRING([--enable-maintainer-mode],
4707 [enable make rules and dependencies not useful
4708 (and sometimes confusing) to the casual installer])],
4709 maintainer_mode=$enableval,
4712 AC_MSG_RESULT($maintainer_mode)
4714 if test "$maintainer_mode" = "yes"; then
4725 # Make empty files to contain the specs and options for each language.
4726 # Then add #include lines to for a compiler that has specs and/or options.
4732 # These (without "all_") are set in each config-lang.in.
4733 # `language' must be a single word so is spelled singularly.
4736 all_outputs='Makefile'
4737 # List of language makefile fragments.
4739 # Additional files for gengtype
4740 all_gtfiles="$target_gtfiles"
4742 # These are the languages that are set in --enable-languages,
4743 # and are available in the GCC tree.
4744 all_selected_languages=
4746 # Add the language fragments.
4747 # Languages are added via two mechanisms. Some information must be
4748 # recorded in makefile variables, these are defined in config-lang.in.
4749 # We accumulate them and plug them into the main Makefile.
4750 # The other mechanism is a set of hooks for each of the main targets
4751 # like `clean', `install', etc.
4753 language_hooks="Make-hooks"
4755 for lang in ${srcdir}/*/config-lang.in
4758 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4760 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4761 if test "x$lang_alias" = x
4763 echo "$lang doesn't set \$language." 1>&2
4766 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4767 subdirs="$subdirs $subdir"
4769 # $gcc_subdir is where the gcc integration files are to be found
4770 # for a language, both for internal compiler purposes (compiler
4771 # sources implementing front-end to GCC tree converters), and for
4772 # build infrastructure purposes (Make-lang.in, etc.)
4774 # This will be <subdir> (relative to $srcdir) if a line like
4775 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4776 # is found in <langdir>/config-lang.in, and will remain <langdir>
4779 # Except for the language alias (fetched above), the regular
4780 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4781 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4782 # only this and the language alias.
4784 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4785 if [ "$gcc_subdir" = "" ]; then
4786 gcc_subdir="$subdir"
4789 case ",$enable_languages," in
4791 all_selected_languages="$all_selected_languages $lang_alias"
4792 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4793 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4805 . ${srcdir}/$gcc_subdir/config-lang.in
4806 if test "x$language" = x
4808 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4813 case ",$enable_languages," in
4816 for i in $subdir_requires; do
4817 test -f "${srcdir}/$i/config-lang.in" && continue
4825 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4826 if test -f $srcdir/$gcc_subdir/lang.opt; then
4827 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4828 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4830 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4831 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4833 all_languages="$all_languages $language"
4834 all_compilers="$all_compilers $compilers"
4835 all_outputs="$all_outputs $outputs"
4836 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4837 case ",$enable_languages," in
4839 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4841 AC_SUBST(enable_lto)
4847 # Pick up gtfiles for c
4849 . ${srcdir}/c-config-lang.in
4850 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4853 for language in $all_selected_languages
4855 check_languages="$check_languages check-$language"
4858 # We link each language in with a set of hooks, reached indirectly via
4859 # lang.${target}. Only do so for selected languages.
4863 target_list="all.cross start.encap rest.encap tags \
4864 install-common install-man install-info install-pdf install-html dvi \
4865 pdf html uninstall info man srcextra srcman srcinfo \
4866 mostlyclean clean distclean maintainer-clean install-plugin"
4868 for t in $target_list
4871 for lang in $all_selected_languages
4875 echo "lang.$t: $x" >> Make-hooks
4879 # Option include files
4882 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4883 option_includes="option-includes.mk"
4884 AC_SUBST_FILE(option_includes)
4892 echo "dir ." > .gdbinit
4893 echo "dir ${srcdir}" >> .gdbinit
4894 if test x$gdb_needs_out_file_path = xyes
4896 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4898 if test "x$subdirs" != x; then
4901 echo "dir ${srcdir}/$s" >> .gdbinit
4904 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4906 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4907 AC_SUBST(gcc_tooldir)
4910 # Find a directory in which to install a shared libgcc.
4912 AC_ARG_ENABLE(version-specific-runtime-libs,
4913 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
4914 [specify that runtime libraries should be
4915 installed in a compiler-specific directory])])
4917 # Substitute configuration variables
4920 AC_SUBST(all_compilers)
4921 AC_SUBST(all_gtfiles)
4922 AC_SUBST(all_lang_makefrags)
4923 AC_SUBST(all_languages)
4924 AC_SUBST(all_selected_languages)
4925 AC_SUBST(build_exeext)
4926 AC_SUBST(build_install_headers_dir)
4927 AC_SUBST(build_xm_file_list)
4928 AC_SUBST(build_xm_include_list)
4929 AC_SUBST(build_xm_defines)
4930 AC_SUBST(build_file_translate)
4931 AC_SUBST(check_languages)
4932 AC_SUBST(cpp_install_dir)
4933 AC_SUBST(xmake_file)
4934 AC_SUBST(tmake_file)
4935 AC_SUBST(TM_ENDIAN_CONFIG)
4936 AC_SUBST(TM_MULTILIB_CONFIG)
4937 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4938 AC_SUBST(extra_gcc_objs)
4939 AC_SUBST(user_headers_inc_next_pre)
4940 AC_SUBST(user_headers_inc_next_post)
4941 AC_SUBST(extra_headers_list)
4942 AC_SUBST(extra_objs)
4943 AC_SUBST(extra_passes)
4944 AC_SUBST(extra_programs)
4945 AC_SUBST(float_h_file)
4946 AC_SUBST(gcc_config_arguments)
4947 AC_SUBST(gcc_gxx_include_dir)
4948 AC_SUBST(host_exeext)
4949 AC_SUBST(host_xm_file_list)
4950 AC_SUBST(host_xm_include_list)
4951 AC_SUBST(host_xm_defines)
4952 AC_SUBST(out_host_hook_obj)
4954 AC_SUBST(lang_opt_files)
4955 AC_SUBST(lang_specs_files)
4956 AC_SUBST(lang_tree_files)
4957 AC_SUBST(local_prefix)
4959 AC_SUBST(objc_boehm_gc)
4961 AC_SUBST(out_object_file)
4962 AC_SUBST(common_out_file)
4963 AC_SUBST(common_out_object_file)
4964 AC_SUBST(thread_file)
4965 AC_SUBST(tm_file_list)
4966 AC_SUBST(tm_include_list)
4967 AC_SUBST(tm_defines)
4968 AC_SUBST(tm_p_file_list)
4969 AC_SUBST(tm_p_include_list)
4970 AC_SUBST(xm_file_list)
4971 AC_SUBST(xm_include_list)
4972 AC_SUBST(xm_defines)
4973 AC_SUBST(use_gcc_stdint)
4974 AC_SUBST(c_target_objs)
4975 AC_SUBST(cxx_target_objs)
4976 AC_SUBST(fortran_target_objs)
4977 AC_SUBST(target_cpu_default)
4979 AC_SUBST_FILE(language_hooks)
4982 if test x${build} = x${host} ; then
4983 if test x${host} = x${target} ; then
4984 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4986 echo "Links are now set up to build a cross-compiler" 1>&2
4987 echo " from ${host} to ${target}." 1>&2
4990 if test x${host} = x${target} ; then
4991 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4992 echo " for ${target}." 1>&2
4994 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4995 echo " from ${host} to ${target}." 1>&2
4999 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5000 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5002 AC_ARG_VAR(PPLLIBS,[How to link PPL])
5003 AC_ARG_VAR(PPLINC,[How to find PPL include files])
5005 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5006 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5007 if test "x${CLOOGLIBS}" != "x" ; then
5008 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5011 # Check for plugin support
5012 AC_ARG_ENABLE(plugin,
5013 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5014 enable_plugin=$enableval,
5015 enable_plugin=yes; default_plugin=yes)
5021 if test x$build = x$host; then
5022 export_sym_check="nm${exeext} -g"
5023 elif test x$host = x$target; then
5024 export_sym_check="$gcc_cv_nm -g"
5030 if test x$build = x$host; then
5031 export_sym_check="objdump${exeext} -T"
5032 elif test x$host = x$target; then
5033 export_sym_check="$gcc_cv_objdump -T"
5040 if test x"$enable_plugin" = x"yes"; then
5042 AC_MSG_CHECKING([for exported symbols])
5043 if test "x$export_sym_check" != x; then
5044 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5045 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
5046 if $export_sym_check conftest | grep foobar > /dev/null; then
5047 : # No need to use a flag
5048 AC_MSG_RESULT([yes])
5050 AC_MSG_RESULT([yes])
5051 AC_MSG_CHECKING([for -rdynamic])
5052 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
5053 if $export_sym_check conftest | grep foobar > /dev/null; then
5055 pluginlibs="-rdynamic"
5060 AC_MSG_RESULT([$plugin_rdynamic])
5063 AC_MSG_RESULT([unable to check])
5068 AC_SEARCH_LIBS([dlopen], [dl])
5069 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5070 pluginlibs="$pluginlibs -ldl"
5074 # Check that we can build shared objects with -fPIC -shared
5075 saved_LDFLAGS="$LDFLAGS"
5076 saved_CFLAGS="$CFLAGS"
5079 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5080 CFLAGS="$CFLAGS -fPIC"
5081 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5084 CFLAGS="$CFLAGS -fPIC"
5085 LDFLAGS="$LDFLAGS -fPIC -shared"
5088 AC_MSG_CHECKING([for -fPIC -shared])
5090 [extern int X;],[return X == 0;],
5091 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5092 [AC_MSG_RESULT([no]); have_pic_shared=no])
5093 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5097 LDFLAGS="$saved_LDFLAGS"
5098 CFLAGS="$saved_CFLAGS"
5100 # If plugin support had been requested but not available, fail.
5101 if test x"$enable_plugin" = x"no" ; then
5102 if test x"$default_plugin" != x"yes"; then
5104 Building GCC with plugin support requires a host that supports
5105 -fPIC, -shared, -ldl and -rdynamic.])
5110 AC_SUBST(pluginlibs)
5111 AC_SUBST(enable_plugin)
5112 if test x"$enable_plugin" = x"yes"; then
5113 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5117 AC_ARG_ENABLE(libquadmath-support,
5118 [AS_HELP_STRING([--disable-libquadmath-support],
5119 [disable libquadmath support for Fortran])],
5120 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5121 ENABLE_LIBQUADMATH_SUPPORT=yes)
5122 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5123 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5124 [Define to 1 to enable libquadmath support])
5128 # Specify what hash style to use by default.
5129 AC_ARG_WITH([linker-hash-style],
5130 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5131 [specify the linker hash style])],
5132 [case x"$withval" in
5134 LINKER_HASH_STYLE=sysv
5137 LINKER_HASH_STYLE=gnu
5140 LINKER_HASH_STYLE=both
5143 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5146 [LINKER_HASH_STYLE=''])
5147 if test x"${LINKER_HASH_STYLE}" != x; then
5148 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5149 [The linker hash style])
5152 # Configure the subdirectories
5153 # AC_CONFIG_SUBDIRS($subdirs)
5155 # Create the Makefile
5156 # and configure language subdirectories
5157 AC_CONFIG_FILES($all_outputs)
5159 AC_CONFIG_COMMANDS([default],
5161 case ${CONFIG_HEADERS} in
5162 *auto-host.h:config.in*)
5165 # Make sure all the subdirs exist.
5166 for d in $subdirs doc build common c-family
5168 test -d $d || mkdir $d
5171 [subdirs='$subdirs'])