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(build-sysroot,
729 [AS_HELP_STRING([--with-build-sysroot=sysroot],
730 [use sysroot as the system root during the build])])
733 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
734 [search for usr/lib, usr/include, et al, within DIR])],
736 case ${with_sysroot} in
737 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
738 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
741 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
742 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
744 if test "x$prefix" = xNONE; then
745 test_prefix=/usr/local
749 if test "x$exec_prefix" = xNONE; then
750 test_exec_prefix=$test_prefix
752 test_exec_prefix=$exec_prefix
754 case ${TARGET_SYSTEM_ROOT} in
755 "${test_prefix}"|"${test_prefix}/"*|\
756 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
757 '${prefix}'|'${prefix}/'*|\
758 '${exec_prefix}'|'${exec_prefix}/'*)
759 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
760 TARGET_SYSTEM_ROOT_DEFINE="$t"
765 TARGET_SYSTEM_ROOT_DEFINE=
766 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
768 AC_SUBST(TARGET_SYSTEM_ROOT)
769 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
770 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
773 [AS_HELP_STRING([--with-specs=SPECS],
774 [add SPECS to driver command-line processing])],
775 [CONFIGURE_SPECS=$withval],
778 AC_SUBST(CONFIGURE_SPECS)
780 ACX_PKGVERSION([GCC])
781 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
783 # Sanity check enable_languages in case someone does not run the toplevel
784 # configure # script.
785 AC_ARG_ENABLE(languages,
786 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
787 [case ,${enable_languages}, in
789 # go safe -- we cannot be much sure without the toplevel
791 # analysis of which target libs are present and usable
795 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
800 enable_languages=c,${enable_languages}
803 [enable_languages=c])
805 AC_ARG_WITH(multilib-list,
806 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
808 with_multilib_list=default)
810 # -------------------------
811 # Checks for other programs
812 # -------------------------
816 # Find some useful tools
818 # We need awk to create options.c and options.h.
819 # Bail out if it's missing.
821 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
829 # By default, the Darwin ranlib will not treat common symbols as
830 # definitions when building the archive table of contents. Other
831 # ranlibs do that; pass an option to the Darwin ranlib that makes
832 # it behave similarly.
838 AC_SUBST(ranlib_flags)
842 # See if cmp has --ignore-initial.
843 gcc_AC_PROG_CMP_IGNORE_INITIAL
845 # See if we have the mktemp command.
846 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
848 # See if makeinfo has been installed and is modern enough
849 # that we can use it.
850 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
851 [GNU texinfo.* \([0-9][0-9.]*\)],
852 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
853 if test $gcc_cv_prog_makeinfo_modern = no; then
855 *** Makeinfo is missing or too old.
856 *** Info documentation will not be built.])
863 # Is pod2man recent enough to regenerate manpages?
864 AC_MSG_CHECKING([for recent Pod::Man])
865 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
867 GENERATED_MANPAGES=generated-manpages
872 AC_SUBST(GENERATED_MANPAGES)
874 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
877 dnl Don't use AC_PROG_LEX; we insist on flex.
878 dnl LEXLIB is not useful in gcc.
879 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
882 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
884 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
885 # check for build == host before using them.
888 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
889 && test -d ../binutils ; then
890 NM='${objdir}/../binutils/nm-new'
892 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
896 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
897 && test -d ../binutils ; then
898 AR='${objdir}/../binutils/ar'
900 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
904 # --------------------
905 # Checks for C headers
906 # --------------------
908 # Need to reject headers which give warnings, so that the -Werror bootstrap
909 # works later. *sigh* This needs to come before all header checks.
916 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
917 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
918 sys/resource.h sys/param.h sys/times.h sys/stat.h \
919 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
921 # Check for thread headers.
922 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
923 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
925 # These tests can't be done till we know if we have limits.h.
929 # ----------------------
930 # Checks for C++ headers
931 # ----------------------
933 dnl Autoconf will give an error in the configure script if there is no
934 dnl C++ preprocessor. Hack to prevent that.
935 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
937 m4_popdef([AC_MSG_ERROR])[]dnl
941 AC_CHECK_HEADERS(unordered_map)
942 AC_CHECK_HEADERS(tr1/unordered_map)
943 AC_CHECK_HEADERS(ext/hash_map)
952 # These libraries may be used by collect2.
953 # We may need a special search path to get them linked.
954 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
956 for libs in '' -lld -lmld \
957 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
958 '-L/usr/lib/cmplrs/cc3.11 -lmld'
961 AC_TRY_LINK_FUNC(ldopen,
962 [gcc_cv_collect2_libs="$libs"; break])
965 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
966 case $gcc_cv_collect2_libs in
968 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
970 AC_SUBST(COLLECT2_LIBS)
972 # When building Ada code on Alpha, we need exc_resume which is usually in
973 # -lexc. So test for it.
976 AC_SEARCH_LIBS(exc_resume, exc)
979 AC_SUBST(GNAT_LIBEXC)
981 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
984 AC_SEARCH_LIBS(kstat_open, kstat)
985 EXTRA_GCC_LIBS="$LIBS"
987 AC_SUBST(EXTRA_GCC_LIBS)
989 # Some systems put ldexp and frexp in libm instead of libc; assume
990 # they're both in the same place. jcf-dump needs them.
993 AC_SEARCH_LIBS(ldexp, m)
998 # Use <inttypes.h> only if it exists,
999 # doesn't clash with <sys/types.h>, and declares intmax_t.
1000 AC_MSG_CHECKING(for inttypes.h)
1001 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1002 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1003 [[#include <sys/types.h>
1004 #include <inttypes.h>]],
1005 [[intmax_t i = -1;]])],
1006 [gcc_cv_header_inttypes_h=yes],
1007 [gcc_cv_header_inttypes_h=no])])
1008 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1009 if test $gcc_cv_header_inttypes_h = yes; then
1010 AC_DEFINE(HAVE_INTTYPES_H, 1,
1011 [Define if you have a working <inttypes.h> header file.])
1014 dnl Disabled until we have a complete test for buggy enum bitfields.
1015 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1017 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1018 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1019 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1020 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1021 putchar_unlocked putc_unlocked)
1022 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1023 sysconf strsignal getrusage nl_langinfo \
1024 gettimeofday mbstowcs wcswidth mmap setlocale \
1027 if test x$ac_cv_func_mbstowcs = xyes; then
1028 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1029 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1035 [gcc_cv_func_mbstowcs_works=yes],
1036 [gcc_cv_func_mbstowcs_works=no],
1037 [gcc_cv_func_mbstowcs_works=yes])])
1038 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1039 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1040 [Define this macro if mbstowcs does not crash when its
1041 first argument is NULL.])
1045 AC_CHECK_TYPE(ssize_t, int)
1046 AC_CHECK_TYPE(caddr_t, char *)
1048 gcc_AC_FUNC_MMAP_BLACKLIST
1052 # Under VMS, vfork works very differently than on Unix. The standard test
1053 # won't work, and it isn't easily adaptable. It makes more sense to
1055 ac_cv_func_vfork_works=yes
1060 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1061 # iconv() prototype.
1062 AS_IF([test "$ENABLE_BUILD_WITH_CXX" = "yes"],
1063 [AC_LANG_PUSH([C++])
1065 AC_LANG_POP([C++])],
1068 # Until we have in-tree GNU iconv:
1070 AC_SUBST(LIBICONV_DEP)
1076 # We will need to find libiberty.h and ansidecl.h
1077 saved_CFLAGS="$CFLAGS"
1078 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1079 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1080 strsignal strstr strverscmp \
1081 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1082 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1083 #include "ansidecl.h"
1084 #include "system.h"])
1086 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1087 #include "ansidecl.h"
1089 #ifdef HAVE_SYS_RESOURCE_H
1090 #include <sys/resource.h>
1094 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1095 #include "ansidecl.h"
1097 #ifdef HAVE_SYS_RESOURCE_H
1098 #include <sys/resource.h>
1100 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1101 [Define to `long' if <sys/resource.h> doesn't define.])])
1103 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1104 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1105 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1106 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1107 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1108 #include "ansidecl.h"
1117 gcc_AC_CHECK_DECLS(times, , ,[
1118 #include "ansidecl.h"
1120 #ifdef HAVE_SYS_TIMES_H
1121 #include <sys/times.h>
1125 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1126 #include "ansidecl.h"
1131 # More time-related stuff.
1132 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1133 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1134 #include "ansidecl.h"
1136 #ifdef HAVE_SYS_TIMES_H
1137 #include <sys/times.h>
1139 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1140 if test $ac_cv_struct_tms = yes; then
1141 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1142 [Define if <sys/times.h> defines struct tms.])
1145 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1146 # revisit after autoconf 2.50.
1147 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1148 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1149 #include "ansidecl.h"
1151 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1152 if test $gcc_cv_type_clock_t = yes; then
1153 AC_DEFINE(HAVE_CLOCK_T, 1,
1154 [Define if <time.h> defines clock_t.])
1157 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1158 CFLAGS="$saved_CFLAGS"
1160 gcc_AC_INITFINI_ARRAY
1162 # mkdir takes a single argument on some systems.
1163 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1171 # With Setjmp/Longjmp based exception handling.
1172 AC_ARG_ENABLE(sjlj-exceptions,
1173 [AS_HELP_STRING([--enable-sjlj-exceptions],
1174 [arrange to use setjmp/longjmp exception handling])],
1177 if test $enableval != yes; then
1178 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1183 force_sjlj_exceptions=yes],
1186 force_sjlj_exceptions=yes
1190 force_sjlj_exceptions=no
1193 if test $force_sjlj_exceptions = yes; then
1194 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1195 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1196 [Define 0/1 to force the choice for exception handling model.])
1199 # --------------------------------------------------------
1200 # Build, host, and target specific configuration fragments
1201 # --------------------------------------------------------
1203 # Collect build-machine-specific information.
1204 . ${srcdir}/config.build
1206 # Collect host-machine-specific information.
1207 . ${srcdir}/config.host
1211 # Collect target-machine-specific information.
1212 . ${srcdir}/config.gcc
1214 extra_objs="${host_extra_objs} ${extra_objs}"
1215 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1217 # Default the target-machine variables that were not explicitly set.
1218 if test x"$tm_file" = x
1219 then tm_file=$cpu_type/$cpu_type.h; fi
1221 if test x"$extra_headers" = x
1222 then extra_headers=; fi
1224 if test x$md_file = x
1225 then md_file=$cpu_type/$cpu_type.md; fi
1227 if test x$out_file = x
1228 then out_file=$cpu_type/$cpu_type.c; fi
1230 if test x"$tmake_file" = x
1231 then tmake_file=$cpu_type/t-$cpu_type
1234 if test x"$dwarf2" = xyes
1235 then tm_file="$tm_file tm-dwarf2.h"
1238 # Say what files are being used for the output code and MD file.
1239 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1240 echo "Using \`$srcdir/config/$md_file' as machine description file."
1242 # If any of the xm_file variables contain nonexistent files, warn
1243 # about them and drop them.
1246 for x in $build_xm_file; do
1247 if test -f $srcdir/config/$x
1249 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1255 for x in $host_xm_file; do
1256 if test -f $srcdir/config/$x
1258 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1264 for x in $xm_file; do
1265 if test -f $srcdir/config/$x
1267 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1273 for f in $tm_file; do
1276 if test $count = ax; then
1277 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1279 echo "Using the following target machine macro files:"
1280 for f in $tm_file; do
1281 echo " $srcdir/config/$f"
1285 if test x$need_64bit_hwint = xyes; then
1286 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1287 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1290 if test x$use_long_long_for_widest_fast_int = xyes; then
1291 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1292 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1293 efficiently supported by the host hardware.])
1297 for f in $host_xm_file; do
1300 if test $count = a; then
1302 elif test $count = ax; then
1303 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1305 echo "Using the following host machine macro files:"
1306 for f in $host_xm_file; do
1307 echo " $srcdir/config/$f"
1310 echo "Using ${out_host_hook_obj} for host machine hooks."
1312 if test "$host_xm_file" != "$build_xm_file"; then
1314 for f in $build_xm_file; do
1317 if test $count = a; then
1319 elif test $count = ax; then
1320 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1322 echo "Using the following build machine macro files:"
1323 for f in $build_xm_file; do
1324 echo " $srcdir/config/$f"
1331 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1332 gcc_cv_mcontext_underscores,
1334 #include <sys/cdefs.h>
1335 #include <sys/signal.h>
1336 #include <ucontext.h>
1337 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1339 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1340 if test $gcc_cv_mcontext_underscores = yes; then
1341 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1342 [mcontext_t fields start with __])
1351 # Check if a valid thread package
1352 case ${enable_threads} in
1355 target_thread_file='single'
1359 target_thread_file='single'
1361 aix | dce | lynx | mipssde | posix | rtems | \
1362 single | tpf | vxworks | win32)
1363 target_thread_file=${enable_threads}
1366 echo "${enable_threads} is an unknown thread package" 1>&2
1371 if test x${thread_file} = x; then
1372 # No thread file set by target-specific clauses in config.gcc,
1373 # so use file chosen by default logic above
1374 thread_file=${target_thread_file}
1377 # Make gthr-default.h if we have a thread file.
1379 if test $thread_file != single; then
1380 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1381 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1382 rm -f gthr-default.h-t
1384 mv -f gthr-default.h-t gthr-default.h
1386 gthread_flags=-DHAVE_GTHR_DEFAULT
1388 AC_SUBST(gthread_flags)
1395 if test x$enable___cxa_atexit = xyes || \
1396 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1397 if test x$host = x$target; then
1399 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1400 # keyed to flag_use_cxa_atexit
1405 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1406 [echo "__cxa_atexit can't be enabled on this target"])
1410 # We can't check for __cxa_atexit when building a cross, so assume
1414 if test x$use_cxa_atexit = xyes; then
1415 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1416 [Define if you want to use __cxa_atexit, rather than atexit, to
1417 register C++ destructors for local statics and global objects.
1418 This is essential for fully standards-compliant handling of
1419 destructors, but requires __cxa_atexit in libc.])
1423 # Look for a file containing extra machine modes.
1424 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1425 extra_modes_file='$(srcdir)'/config/${extra_modes}
1426 AC_SUBST(extra_modes_file)
1427 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1428 [Define to the name of a file containing a list of extra machine modes
1429 for this architecture.])
1432 # Convert extra_options into a form suitable for Makefile use.
1435 for f in $extra_options; do
1436 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1437 all_opt_files="$all_opt_files $srcdir/config/$f"
1439 AC_SUBST(extra_opt_files)
1441 # auto-host.h is the file containing items generated by autoconf and is
1442 # the first file included by config.h.
1443 # If host=build, it is correct to have bconfig include auto-host.h
1444 # as well. If host!=build, we are in error and need to do more
1445 # work to find out the build config parameters.
1446 if test x$host = x$build
1448 build_auto=auto-host.h
1450 # We create a subdir, then run autoconf in the subdir.
1451 # To prevent recursion we set host and build for the new
1452 # invocation of configure to the build for this invocation
1459 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1460 *) realsrcdir=../${srcdir};;
1462 saved_CFLAGS="${CFLAGS}"
1463 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1464 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1465 ${realsrcdir}/configure \
1466 --enable-languages=${enable_languages-all} \
1467 --target=$target_alias --host=$build_alias --build=$build_alias
1468 CFLAGS="${saved_CFLAGS}"
1470 # We just finished tests for the build machine, so rename
1471 # the file auto-build.h in the gcc directory.
1472 mv auto-host.h ../auto-build.h
1475 build_auto=auto-build.h
1477 AC_SUBST(build_subdir)
1479 tm_file="${tm_file} defaults.h"
1480 tm_p_file="${tm_p_file} tm-preds.h"
1481 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1482 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1483 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1484 # put this back in temporarily.
1485 xm_file="auto-host.h ansidecl.h ${xm_file}"
1492 # Compile in configure arguments.
1493 if test -f configargs.h ; then
1494 # Being re-configured.
1495 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1496 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1498 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1501 # Double all backslashes and backslash all quotes to turn
1502 # gcc_config_arguments into a C string.
1503 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1504 $gcc_config_arguments
1506 gcc_config_arguments_str=`cat conftest.out`
1509 cat > configargs.h <<EOF
1510 /* Generated automatically. */
1511 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1512 static const char thread_model[] = "$thread_file";
1514 static const struct {
1515 const char *name, *value;
1516 } configure_default_options[] = $configure_default_options;
1521 gcc_BASEVER=`cat $srcdir/BASE-VER`
1522 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1523 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1524 if test -f $srcdir/REVISION ; then
1525 gcc_REVISION=`cat $srcdir/REVISION`
1529 cat > plugin-version.h <<EOF
1530 #include "configargs.h"
1532 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1533 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1534 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1535 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1537 static char basever[] = "$gcc_BASEVER";
1538 static char datestamp[] = "$gcc_DATESTAMP";
1539 static char devphase[] = "$gcc_DEVPHASE";
1540 static char revision[] = "$gcc_REVISION";
1542 /* FIXME plugins: We should make the version information more precise.
1543 One way to do is to add a checksum. */
1545 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1547 configuration_arguments};
1551 # Internationalization
1552 ZW_GNU_GETTEXT_SISTER_DIR
1554 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1555 # -liconv on the link line twice.
1556 case "$LIBINTL" in *$LIBICONV*)
1560 AC_ARG_ENABLE(secureplt,
1561 [AS_HELP_STRING([--enable-secureplt],
1562 [enable -msecure-plt by default for PowerPC])],
1565 AC_ARG_ENABLE(leading-mingw64-underscores,
1566 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1567 [enable leading underscores on 64 bit mingw targets]),
1569 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1570 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1571 [Define if we should use leading underscore on 64 bit mingw targets])])
1574 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1577 AC_ARG_ENABLE(frame-pointer,
1578 [AS_HELP_STRING([--enable-frame-pointer],
1579 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1582 linux* | darwin[[8912]]*)
1583 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1585 enable_frame_pointer=no
1588 enable_frame_pointer=yes
1593 # Windows32 Registry support for specifying GCC installation paths.
1594 AC_ARG_ENABLE(win32-registry,
1595 [AS_HELP_STRING([--disable-win32-registry],
1596 [disable lookup of installation paths in the
1597 Registry on Windows hosts])
1598 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1599 AS_HELP_STRING([--enable-win32-registry=KEY],
1600 [use KEY instead of GCC version as the last portion
1601 of the registry key])],,)
1604 win32 | pe | cygwin* | mingw32* | uwin*)
1605 if test "x$enable_win32_registry" != xno; then
1606 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1609 if test "x$enable_win32_registry" != xno; then
1610 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1611 [Define to 1 if installation paths should be looked up in the Windows
1612 Registry. Ignored on non-Windows hosts.])
1614 if test "x$enable_win32_registry" != xyes \
1615 && test "x$enable_win32_registry" != x; then
1616 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1617 [Define to be the last component of the Windows registry key under which
1618 to look for installation paths. The full key used will be
1619 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1620 The default is the GCC version number.])
1626 # Get an absolute path to the GCC top-level source directory
1627 holddir=`${PWDCMD-pwd}`
1629 topdir=`${PWDCMD-pwd}`
1632 # Conditionalize the makefile for this host machine.
1634 for f in ${host_xmake_file}
1636 if test -f ${srcdir}/config/$f
1638 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1642 # Conditionalize the makefile for this target machine.
1644 for f in ${tmake_file}
1646 if test -f ${srcdir}/config/$f
1648 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1651 tmake_file="${tmake_file_}"
1653 out_object_file=`basename $out_file .c`.o
1654 common_out_object_file=`basename $common_out_file .c`.o
1656 tm_file_list="options.h"
1657 tm_include_list="options.h insn-constants.h"
1658 for f in $tm_file; do
1661 f=`echo $f | sed 's/^..//'`
1662 tm_file_list="${tm_file_list} $f"
1663 tm_include_list="${tm_include_list} $f"
1666 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1667 tm_include_list="${tm_include_list} $f"
1670 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1671 tm_include_list="${tm_include_list} config/$f"
1676 libgcc_tm_file_list=
1677 libgcc_tm_include_list=
1678 for f in $libgcc_tm_file; do
1679 libgcc_tm_file_list="${libgcc_tm_file_list} \$(srcdir)/../libgcc/config/$f"
1680 libgcc_tm_include_list="${libgcc_tm_include_list} ../libgcc/config/$f"
1685 for f in $tm_p_file; do
1688 tm_p_file_list="${tm_p_file_list} $f"
1689 tm_p_include_list="${tm_p_include_list} $f"
1692 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1693 tm_p_include_list="${tm_p_include_list} config/$f"
1699 for f in $xm_file; do
1702 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1703 xm_include_list="${xm_include_list} $f"
1706 xm_file_list="${xm_file_list} $f"
1707 xm_include_list="${xm_include_list} $f"
1710 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1711 xm_include_list="${xm_include_list} config/$f"
1717 host_xm_include_list=
1718 for f in $host_xm_file; do
1721 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1722 host_xm_include_list="${host_xm_include_list} $f"
1725 host_xm_file_list="${host_xm_file_list} $f"
1726 host_xm_include_list="${host_xm_include_list} $f"
1729 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1730 host_xm_include_list="${host_xm_include_list} config/$f"
1736 for f in $build_xm_file; do
1739 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1740 build_xm_include_list="${build_xm_include_list} $f"
1742 auto-build.h | auto-host.h )
1743 build_xm_file_list="${build_xm_file_list} $f"
1744 build_xm_include_list="${build_xm_include_list} $f"
1747 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1748 build_xm_include_list="${build_xm_include_list} config/$f"
1753 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1754 # cross-compiler which does not use the native headers and libraries.
1755 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1756 CROSS= AC_SUBST(CROSS)
1757 ALL=all.internal AC_SUBST(ALL)
1758 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1760 if test "x$with_build_sysroot" != x; then
1761 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1763 # This value is used, even on a native system, because
1764 # CROSS_SYSTEM_HEADER_DIR is just
1765 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1766 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1769 if test x$host != x$target
1771 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1773 SYSTEM_HEADER_DIR=$build_system_header_dir
1774 case "$host","$target" in
1775 # Darwin crosses can use the host system's libraries and headers,
1776 # because of the fat library support. Of course, it must be the
1777 # same version of Darwin on both sides. Allow the user to
1778 # just say --target=foo-darwin without a version number to mean
1779 # "the version on this system".
1780 *-*-darwin*,*-*-darwin*)
1781 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1782 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1783 if test $hostos = $targetos -o $targetos = darwin ; then
1785 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1790 i?86-*-*,x86_64-*-* \
1791 | powerpc*-*-*,powerpc64*-*-*)
1792 CROSS="$CROSS -DNATIVE_CROSS" ;;
1797 if test "x$with_headers" = x; then
1804 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1805 SYSTEM_HEADER_DIR=$build_system_header_dir
1808 # If this is a cross-compiler that does not
1809 # have its own set of headers then define
1812 # If this is using newlib, without having the headers available now,
1813 # then define inhibit_libc in LIBGCC2_CFLAGS.
1814 # This prevents libgcc2 from containing any code which requires libc
1816 : ${inhibit_libc=false}
1817 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1818 test x$with_newlib = xyes ; } &&
1819 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1822 AC_SUBST(inhibit_libc)
1824 # When building gcc with a cross-compiler, we need to adjust things so
1825 # that the generator programs are still built with the native compiler.
1826 # Also, we cannot run fixincludes.
1828 # These are the normal (build=host) settings:
1829 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1830 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1831 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1832 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1834 # And these apply if build != host, or we are generating coverage data
1835 if test x$build != x$host || test "x$coverage_flags" != x
1837 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1838 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1841 # Expand extra_headers to include complete path.
1842 # This substitutes for lots of t-* files.
1844 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1845 for file in ${extra_headers} ; do
1846 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1849 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1850 if test x"$use_gcc_tgmath" = xyes
1851 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1854 # Define collect2 in Makefile.
1855 case $host_can_use_collect2 in
1857 *) collect2='collect2$(exeext)' ;;
1859 AC_SUBST([collect2])
1861 # Add a definition of USE_COLLECT2 if system wants one.
1862 case $use_collect2 in
1863 no) use_collect2= ;;
1866 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1867 xm_defines="${xm_defines} USE_COLLECT2"
1868 case $host_can_use_collect2 in
1870 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1876 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1877 [Define to the name of the LTO plugin DSO that must be
1878 passed to the linker's -plugin=LIB option.])
1880 # ---------------------------
1881 # Assembler & linker features
1882 # ---------------------------
1884 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1885 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1886 # However when ld-new is first executed from the build tree, libtool will
1887 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1888 # to the build tree. While doing this we need to use the previous-stage
1889 # linker, or we have an infinite loop. The presence of a shell script as
1890 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1891 # the gcc/collect-ld script. So we need to know how libtool works, or
1892 # exec-tool will fail.
1894 m4_defun([_LT_CONFIG_COMMANDS], [])
1897 AC_SUBST(enable_fast_install)
1899 # Identify the assembler which will work hand-in-glove with the newly
1900 # built GCC, so that we can examine its features. This is the assembler
1901 # which will be driven by the driver program.
1903 # If build != host, and we aren't building gas in-tree, we identify a
1904 # build->target assembler and hope that it will have the same features
1905 # as the host->target assembler we'll be using.
1906 gcc_cv_gas_major_version=
1907 gcc_cv_gas_minor_version=
1908 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1910 m4_pattern_allow([AS_FOR_TARGET])dnl
1911 AS_VAR_SET_IF(gcc_cv_as,, [
1912 if test -x "$DEFAULT_ASSEMBLER"; then
1913 gcc_cv_as="$DEFAULT_ASSEMBLER"
1914 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1915 && test -f ../gas/Makefile \
1916 && test x$build = x$host; then
1917 gcc_cv_as=../gas/as-new$build_exeext
1918 elif test -x as$build_exeext; then
1919 # Build using assembler in the current directory.
1920 gcc_cv_as=./as$build_exeext
1921 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1922 gcc_cv_as="$AS_FOR_TARGET"
1924 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1927 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1928 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1929 case "$ORIGINAL_AS_FOR_TARGET" in
1930 ./as | ./as$build_exeext) ;;
1931 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1934 AC_MSG_CHECKING(what assembler to use)
1935 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1936 # Single tree build which includes gas. We want to prefer it
1937 # over whatever linker top-level may have detected, since
1938 # we'll use what we're building after installation anyway.
1939 AC_MSG_RESULT(newly built gas)
1941 _gcc_COMPUTE_GAS_VERSION
1942 in_tree_gas_is_elf=no
1943 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1944 || (grep 'obj_format = multi' ../gas/Makefile \
1945 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1947 in_tree_gas_is_elf=yes
1950 AC_MSG_RESULT($gcc_cv_as)
1954 # Identify the linker which will work hand-in-glove with the newly
1955 # built GCC, so that we can examine its features. This is the linker
1956 # which will be driven by the driver program.
1958 # If build != host, and we aren't building gas in-tree, we identify a
1959 # build->target linker and hope that it will have the same features
1960 # as the host->target linker we'll be using.
1961 gcc_cv_gld_major_version=
1962 gcc_cv_gld_minor_version=
1963 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1964 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1966 AS_VAR_SET_IF(gcc_cv_ld,, [
1967 if test -x "$DEFAULT_LINKER"; then
1968 gcc_cv_ld="$DEFAULT_LINKER"
1969 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1970 && test -f ../ld/Makefile \
1971 && test x$build = x$host; then
1972 gcc_cv_ld=../ld/ld-new$build_exeext
1973 elif test -x collect-ld$build_exeext; then
1974 # Build using linker in the current directory.
1975 gcc_cv_ld=./collect-ld$build_exeext
1976 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
1977 gcc_cv_ld="$LD_FOR_TARGET"
1979 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1982 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1983 PLUGIN_LD=`basename $gcc_cv_ld`
1984 AC_ARG_WITH(plugin-ld,
1985 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
1986 [if test x"$withval" != x; then
1987 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1988 PLUGIN_LD="$withval"
1990 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1991 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1993 # Check to see if we are using gold instead of ld
1994 AC_MSG_CHECKING(whether we are using gold)
1996 if test x$gcc_cv_ld != x; then
1997 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
1998 | grep "GNU gold" > /dev/null; then
2002 AC_MSG_RESULT($ld_is_gold)
2004 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2005 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2006 case "$ORIGINAL_LD_FOR_TARGET" in
2007 ./collect-ld | ./collect-ld$build_exeext) ;;
2008 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2011 AC_MSG_CHECKING(what linker to use)
2012 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2013 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2014 # Single tree build which includes ld. We want to prefer it
2015 # over whatever linker top-level may have detected, since
2016 # we'll use what we're building after installation anyway.
2017 AC_MSG_RESULT(newly built ld)
2019 in_tree_ld_is_elf=no
2020 if (grep 'EMUL = .*elf' ../ld/Makefile \
2021 || grep 'EMUL = .*linux' ../ld/Makefile \
2022 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2023 in_tree_ld_is_elf=yes
2024 elif test "$ld_is_gold" = yes; then
2025 in_tree_ld_is_elf=yes
2027 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
2030 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
2031 if test x$gcc_cv_gld_version != x; then
2035 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2036 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2039 AC_MSG_RESULT($gcc_cv_ld)
2043 # Figure out what nm we will be using.
2044 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2045 AS_VAR_SET_IF(gcc_cv_nm,, [
2046 if test -f $gcc_cv_binutils_srcdir/configure.in \
2047 && test -f ../binutils/Makefile \
2048 && test x$build = x$host; then
2049 gcc_cv_nm=../binutils/nm-new$build_exeext
2050 elif test -x nm$build_exeext; then
2051 gcc_cv_nm=./nm$build_exeext
2052 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2053 gcc_cv_nm="$NM_FOR_TARGET"
2055 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2058 AC_MSG_CHECKING(what nm to use)
2059 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2060 # Single tree build which includes binutils.
2061 AC_MSG_RESULT(newly built nm)
2064 AC_MSG_RESULT($gcc_cv_nm)
2068 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2069 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2070 case "$ORIGINAL_NM_FOR_TARGET" in
2071 ./nm | ./nm$build_exeext) ;;
2072 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2076 # Figure out what objdump we will be using.
2077 AS_VAR_SET_IF(gcc_cv_objdump,, [
2078 if test -f $gcc_cv_binutils_srcdir/configure.in \
2079 && test -f ../binutils/Makefile \
2080 && test x$build = x$host; then
2081 # Single tree build which includes binutils.
2082 gcc_cv_objdump=../binutils/objdump$build_exeext
2083 elif test -x objdump$build_exeext; then
2084 gcc_cv_objdump=./objdump$build_exeext
2085 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2086 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2088 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2091 AC_MSG_CHECKING(what objdump to use)
2092 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2093 # Single tree build which includes binutils.
2094 AC_MSG_RESULT(newly built objdump)
2095 elif test x$gcc_cv_objdump = x; then
2096 AC_MSG_RESULT(not found)
2098 AC_MSG_RESULT($gcc_cv_objdump)
2101 # Figure out what readelf we will be using.
2102 AS_VAR_SET_IF(gcc_cv_readelf,, [
2103 if test -f $gcc_cv_binutils_srcdir/configure.in \
2104 && test -f ../binutils/Makefile \
2105 && test x$build = x$host; then
2106 # Single tree build which includes binutils.
2107 gcc_cv_readelf=../binutils/readelf$build_exeext
2108 elif test -x readelf$build_exeext; then
2109 gcc_cv_readelf=./readelf$build_exeext
2111 AC_PATH_PROG(gcc_cv_readelf, readelf)
2114 AC_MSG_CHECKING(what readelf to use)
2115 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2116 # Single tree build which includes binutils.
2117 AC_MSG_RESULT(newly built readelf)
2118 elif test x$gcc_cv_readelf = x; then
2119 AC_MSG_RESULT(not found)
2121 AC_MSG_RESULT($gcc_cv_readelf)
2124 # Figure out what assembler alignment features are present.
2125 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2129 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2130 [Define if your assembler supports .balign and .p2align.])])
2132 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2135 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2136 [Define if your assembler supports specifying the maximum number
2137 of bytes to skip when using the GAS .p2align command.])])
2139 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2142 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2143 [Define if your assembler supports .literal16.])])
2145 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2147 [conftest_label1: .word 0
2149 conftest_label2: .word 0
2151 [if test x$gcc_cv_nm != x; then
2152 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2153 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2154 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2156 else gcc_cv_as_subsection_m1=yes
2158 rm -f conftest.nm1 conftest.nm2
2160 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2161 [Define if your assembler supports .subsection and .subsection -1 starts
2162 emitting at the beginning of your section.])])
2164 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2167 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2169 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2171 [ .weakref foobar, barfnot],,
2172 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2174 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2177 .NSUBSPA $CODE$,COMDAT],,
2178 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2180 # .hidden needs to be supported in both the assembler and the linker,
2181 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2182 # This is irritatingly difficult to feature test for; we have to check the
2183 # date string after the version number. If we've got an in-tree
2184 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2186 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2187 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2191 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2192 # STV_HIDDEN, so disable .hidden support if so.
2194 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2195 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2196 cat > conftest.s <<EOF
2203 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2204 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2205 grep '\.hidden default' > /dev/null; then
2208 gcc_cv_as_hidden=yes
2211 # Assume bug is present if objdump is missing.
2216 gcc_cv_as_hidden=yes
2221 # Darwin as has some visibility support, though with a different syntax.
2222 gcc_cv_as_hidden=yes
2226 # gnu_indirect_function type is an extension proposed at
2227 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2228 # selection of function implementation
2229 AC_ARG_ENABLE(gnu-indirect-function,
2230 [AS_HELP_STRING([--enable-gnu-indirect-function],
2231 [enable the use of the @gnu_indirect_function to glibc systems])],
2232 [case $enable_gnu_indirect_function in
2234 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2235 Valid choices are 'yes' and 'no'.]) ;;
2237 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2238 if test x$enable_gnu_indirect_function = xyes; then
2239 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2240 [Define if your system supports gnu indirect functions.])
2244 if test $in_tree_ld != yes ; then
2245 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2246 if echo "$ld_ver" | grep GNU > /dev/null; then
2247 if test x"$ld_is_gold" = xyes; then
2248 # GNU gold --version looks like this:
2250 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2252 # We extract the binutils version which is more familiar and specific
2253 # than the gold version.
2254 ld_vers=`echo $ld_ver | sed -n \
2255 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2257 # GNU ld --version looks like this:
2259 # GNU ld (GNU Binutils) 2.21.51.20110225
2260 ld_vers=`echo $ld_ver | sed -n \
2261 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2263 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2264 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2265 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2266 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2271 # Solaris 2 ld -V output looks like this for a regular version:
2273 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2275 # but test versions add stuff at the end:
2277 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2279 ld_ver=`$gcc_cv_ld -V 2>&1`
2280 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2281 ld_vers=`echo $ld_ver | sed -n \
2282 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2283 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2284 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2292 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2293 [[if test $in_tree_ld = yes ; then
2295 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2296 && test $in_tree_ld_is_elf = yes; then
2297 gcc_cv_ld_hidden=yes
2300 gcc_cv_ld_hidden=yes
2301 if test x"$ld_is_gold" = xyes; then
2303 elif echo "$ld_ver" | grep GNU > /dev/null; then
2304 if test 0"$ld_date" -lt 20020404; then
2305 if test -n "$ld_date"; then
2306 # If there was date string, but was earlier than 2002-04-04, fail
2308 elif test -z "$ld_vers"; then
2309 # If there was no date string nor ld version number, something is wrong
2312 test -z "$ld_vers_patch" && ld_vers_patch=0
2313 if test "$ld_vers_major" -lt 2; then
2315 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2316 gcc_cv_ld_hidden="no"
2317 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2325 # Darwin ld has some visibility support.
2326 gcc_cv_ld_hidden=yes
2328 hppa64*-*-hpux* | ia64*-*-hpux*)
2329 gcc_cv_ld_hidden=yes
2332 # .hidden support was backported to Solaris 8, starting with ld
2334 if test "$ld_vers_minor" -ge 276; then
2335 gcc_cv_ld_hidden=yes
2340 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2341 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2342 # .symbolic was only added in Solaris 9 12/02.
2343 gcc_cv_ld_hidden=yes
2351 libgcc_visibility=no
2352 AC_SUBST(libgcc_visibility)
2353 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2354 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2355 libgcc_visibility=yes
2356 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2357 [Define if your assembler and linker support .hidden.])
2360 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2361 gcc_cv_ld_ro_rw_mix=unknown
2362 if test $in_tree_ld = yes ; then
2363 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2364 && test $in_tree_ld_is_elf = yes; then
2365 gcc_cv_ld_ro_rw_mix=read-write
2367 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2368 echo '.section myfoosect, "a"' > conftest1.s
2369 echo '.section myfoosect, "aw"' > conftest2.s
2370 echo '.byte 1' >> conftest2.s
2371 echo '.section myfoosect, "a"' > conftest3.s
2372 echo '.byte 0' >> conftest3.s
2373 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2374 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2375 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2376 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2377 conftest2.o conftest3.o > /dev/null 2>&1; then
2378 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2379 | sed -e '/myfoosect/!d' -e N`
2380 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2381 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2382 gcc_cv_ld_ro_rw_mix=read-only
2384 gcc_cv_ld_ro_rw_mix=read-write
2389 rm -f conftest.* conftest[123].*
2392 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2393 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2394 [Define if your linker links a mix of read-only
2395 and read-write sections into a read-write section.])
2397 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2399 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2400 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2408 [[# GAS versions before 2.11 do not support uleb128,
2409 # despite appearing to.
2410 # ??? There exists an elf-specific test that will crash
2411 # the assembler. Perhaps it's better to figure out whether
2412 # arbitrary sections are supported and try the test.
2413 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2414 if echo "$as_ver" | grep GNU > /dev/null; then
2415 as_vers=`echo $as_ver | sed -n \
2416 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2417 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2418 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2419 if test $as_major -eq 2 && test $as_minor -lt 11
2421 else gcc_cv_as_leb128=yes
2424 [AC_DEFINE(HAVE_AS_LEB128, 1,
2425 [Define if your assembler supports .sleb128 and .uleb128.])])
2427 # Check if we have assembler support for unwind directives.
2428 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2435 .cfi_escape 1, 2, 3, 4, 5
2439 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2440 # read-only and read-write sections, we need to make sure that the
2441 # assembler used emits read-write .eh_frame sections.
2442 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2443 if test "x$gcc_cv_objdump" != x; then
2444 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2445 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2446 gcc_cv_as_cfi_directive=no
2449 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2450 # On Solaris/x86, make sure that GCC and gas agree on using
2451 # read-only .eh_frame sections for 64-bit.
2452 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2453 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2454 sed -e /.eh_frame/!d -e N | \
2455 grep READONLY > /dev/null; then
2456 gcc_cv_as_cfi_directive=yes
2458 gcc_cv_as_cfi_directive=no
2462 gcc_cv_as_cfi_directive=yes
2467 # no objdump, err on the side of caution
2468 gcc_cv_as_cfi_directive=no
2471 gcc_cv_as_cfi_directive=yes
2475 gcc_cv_as_cfi_directive=yes
2478 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2479 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2483 .cfi_adjust_cfa_offset 64
2485 .cfi_adjust_cfa_offset 128
2488 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2489 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2490 gcc_cv_as_cfi_advance_working=yes
2494 # no objdump, err on the side of caution
2495 gcc_cv_as_cfi_advance_working=no
2497 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2498 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2499 [`if test $gcc_cv_as_cfi_directive = yes \
2500 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2501 [Define 0/1 if your assembler supports CFI directives.])
2503 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2504 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2505 gcc_cv_as_cfi_personality_directive, ,,
2508 .cfi_personality 0, symbol
2510 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2511 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2512 then echo 1; else echo 0; fi`],
2513 [Define 0/1 if your assembler supports .cfi_personality.])
2515 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2516 gcc_cv_as_cfi_sections_directive, ,,
2518 .cfi_sections .debug_frame, .eh_frame
2522 win32 | pe | cygwin* | mingw32* | uwin*)
2523 # Need to check that we generated the correct relocation for the
2524 # .debug_frame section. This was fixed for binutils 2.21.
2525 gcc_cv_as_cfi_sections_directive=no
2526 if test "x$gcc_cv_objdump" != x; then
2527 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2528 grep secrel > /dev/null; then
2529 gcc_cv_as_cfi_sections_directive=yes
2534 gcc_cv_as_cfi_sections_directive=yes
2537 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2538 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2539 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2540 then echo 1; else echo 0; fi`],
2541 [Define 0/1 if your assembler supports .cfi_sections.])
2543 # GAS versions up to and including 2.11.0 may mis-optimize
2545 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2553 .section .eh_frame,"aw",@progbits
2555 .4byte .LECIE1-.LSCIE1
2569 .4byte .LEFDE1-.LASFDE1
2571 .4byte .LASFDE1-__FRAME_BEGIN__
2579 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2580 cat > conftest.lit <<EOF
2581 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2582 0010 01000000 12000000 18000000 00000000 ................
2583 0020 08000000 04080000 0044 .........D @&t@
2585 cat > conftest.big <<EOF
2586 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2587 0010 00000001 00000012 00000018 00000000 ................
2588 0020 00000008 04000000 0844 .........D @&t@
2590 # If the assembler didn't choke, and we can objdump,
2591 # and we got the correct data, then succeed.
2592 # The text in the here-document typically retains its unix-style line
2593 # endings, while the output of objdump will use host line endings.
2594 # Therefore, use diff -b for the comparisons.
2595 if test x$gcc_cv_objdump != x \
2596 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2597 | tail -3 > conftest.got \
2598 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2599 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2601 gcc_cv_as_eh_frame=yes
2602 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2603 gcc_cv_as_eh_frame=buggy
2605 # Uh oh, what do we do now?
2606 gcc_cv_as_eh_frame=no
2609 if test $gcc_cv_as_eh_frame = buggy; then
2610 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2611 [Define if your assembler mis-optimizes .eh_frame data.])
2614 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2615 [elf,2,12,0], [--fatal-warnings],
2616 [.section .rodata.str, "aMS", @progbits, 1])
2617 if test $gcc_cv_as_shf_merge = no; then
2618 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2619 [elf,2,12,0], [--fatal-warnings],
2620 [.section .rodata.str, "aMS", %progbits, 1])
2622 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2623 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2624 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2626 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2627 gcc_cv_as_comdat_group,
2628 [elf,2,16,0], [--fatal-warnings],
2629 [.section .text,"axG",@progbits,.foo,comdat])
2630 if test $gcc_cv_as_comdat_group = yes; then
2631 gcc_cv_as_comdat_group_percent=no
2632 gcc_cv_as_comdat_group_group=no
2634 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2635 gcc_cv_as_comdat_group_percent,
2636 [elf,2,16,0], [--fatal-warnings],
2637 [.section .text,"axG",%progbits,.foo,comdat])
2638 if test $gcc_cv_as_comdat_group_percent = yes; then
2639 gcc_cv_as_comdat_group_group=no
2642 # Sun as uses a completely different syntax.
2647 .group foo,".text%foo",#comdat
2648 .section ".text%foo", #alloc,#execinstr,#progbits
2653 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2655 .group foo,.text%foo,#comdat
2656 .section .text%foo, "ax", @progbits
2662 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2663 gcc_cv_as_comdat_group_group,
2669 if test x"$ld_is_gold" = xyes; then
2671 elif test $in_tree_ld = yes ; then
2673 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2674 && test $in_tree_ld_is_elf = yes; then
2677 elif echo "$ld_ver" | grep GNU > /dev/null; then
2679 if test 0"$ld_date" -lt 20050308; then
2680 if test -n "$ld_date"; then
2681 # If there was date string, but was earlier than 2005-03-08, fail
2683 elif test "$ld_vers_major" -lt 2; then
2685 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2692 *-*-solaris2.1[1-9]*)
2694 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2695 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2698 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2699 # least ld version 1.2267.
2700 if test "$ld_vers_major" -gt 1; then
2702 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2704 elif test "$ld_vers_minor" -ge 2267; then
2709 # Assume linkers other than GNU ld don't support COMDAT group.
2715 # Allow overriding the automatic COMDAT group tests above.
2716 AC_ARG_ENABLE(comdat,
2717 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2718 [comdat_group="$enable_comdat"])
2719 if test $comdat_group = no; then
2720 gcc_cv_as_comdat_group=no
2721 gcc_cv_as_comdat_group_percent=no
2722 gcc_cv_as_comdat_group_group=no
2724 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2725 [`if test $gcc_cv_as_comdat_group = yes \
2726 || test $gcc_cv_as_comdat_group_percent = yes \
2727 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2728 [Define 0/1 if your assembler and linker support COMDAT groups.])
2730 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2731 gcc_cv_as_discriminator,
2735 .loc 1 1 0 discriminator 1],,
2736 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2737 [Define if your assembler supports the .loc discriminator sub-directive.])])
2739 # Thread-local storage - the check is heavily parameterized.
2748 .section ".tdata","awT",@progbits
2751 ldq $27,__tls_get_addr($29) !literal!1
2752 lda $16,foo($29) !tlsgd!1
2753 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2754 ldq $27,__tls_get_addr($29) !literal!2
2755 lda $16,foo($29) !tlsldm!2
2756 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2757 ldq $1,foo($29) !gotdtprel
2758 ldah $2,foo($29) !dtprelhi
2759 lda $3,foo($2) !dtprello
2760 lda $4,foo($29) !dtprel
2761 ldq $1,foo($29) !gottprel
2762 ldah $2,foo($29) !tprelhi
2763 lda $3,foo($2) !tprello
2764 lda $4,foo($29) !tprel'
2767 tls_as_opt=--fatal-warnings
2769 cris-*-*|crisv32-*-*)
2771 .section ".tdata","awT",@progbits
2778 tls_as_opt=--fatal-warnings
2782 .section ".tdata","awT",@progbits
2794 .section ".tdata","awT",@progbits
2798 addil LT%foo-$tls_gdidx$,gp
2799 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2802 addil LT%foo-$tls_ldidx$,gp
2804 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2805 addil LR%foo-$tls_dtpoff$,%ret0
2806 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2808 addil LT%foo-$tls_ieoff$,gp
2809 ldw RT%foo-$tls_ieoff$(%r1),%t2
2812 addil LR%foo-$tls_leoff$,%t1
2813 ldo RR%foo-$tls_leoff$(%r1),%t2'
2816 tls_as_opt=--fatal-warnings
2820 .section ".tdata","awT",%progbits
2831 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2833 i[34567]86-*-solaris2.*)
2835 tga_func=___tls_get_addr
2837 x86_64-*-solaris2.1[0-9]*)
2839 tga_func=__tls_get_addr
2845 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2847 .section .tdata,"awt",@progbits'
2851 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2852 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2856 .section ".tdata","awT",@progbits'
2859 tls_as_opt="--fatal-warnings"
2861 conftest_s="$conftest_s
2865 leal foo@tlsgd(,%ebx,1), %eax
2866 leal foo@tlsldm(%ebx), %eax
2867 leal foo@dtpoff(%eax), %edx
2868 movl foo@gottpoff(%ebx), %eax
2869 subl foo@gottpoff(%ebx), %eax
2870 addl foo@gotntpoff(%ebx), %eax
2871 movl foo@indntpoff, %eax
2872 movl \$foo@tpoff, %eax
2873 subl \$foo@tpoff, %eax
2874 leal foo@ntpoff(%ecx), %eax"
2878 .section ".tdata","awT",@progbits
2882 leaq foo@TLSGD(%rip), %rdi
2883 leaq foo@TLSLD(%rip), %rdi
2884 leaq foo@DTPOFF(%rax), %rdx
2885 movq foo@GOTTPOFF(%rip), %rax
2886 movq $foo@TPOFF, %rax'
2889 tls_as_opt=--fatal-warnings
2893 .section ".tdata","awT",@progbits
2896 addl r16 = @ltoff(@dtpmod(foo#)), gp
2897 addl r17 = @ltoff(@dtprel(foo#)), gp
2898 addl r18 = @ltoff(@tprel(foo#)), gp
2899 addl r19 = @dtprel(foo#), gp
2900 adds r21 = @dtprel(foo#), r13
2901 movl r23 = @dtprel(foo#)
2902 addl r20 = @tprel(foo#), gp
2903 adds r22 = @tprel(foo#), r13
2904 movl r24 = @tprel(foo#)'
2907 tls_as_opt=--fatal-warnings
2911 .section .tdata,"awT",@progbits
2915 addiu $4, $28, %tlsgd(x)
2916 addiu $4, $28, %tlsldm(x)
2917 lui $4, %dtprel_hi(x)
2918 addiu $4, $4, %dtprel_lo(x)
2919 lw $4, %gottprel(x)($28)
2920 lui $4, %tprel_hi(x)
2921 addiu $4, $4, %tprel_lo(x)'
2924 tls_as_opt='-32 --fatal-warnings'
2928 .section .tdata,"awT",@progbits
2933 move.l x@TLSGD(%a5),%a0
2934 move.l x@TLSLDM(%a5),%a0
2935 move.l x@TLSLDO(%a5),%a0
2936 move.l x@TLSIE(%a5),%a0
2937 move.l x@TLSLE(%a5),%a0'
2940 tls_as_opt='--fatal-warnings'
2944 .section ".tdata","awT",@progbits
2952 addi 3,31,ld0@got@tlsgd
2954 addi 3,31,x1@got@tlsld
2957 addis 9,3,x2@dtprel@ha
2958 addi 9,9,x2@dtprel@l
2959 lwz 9,x3@got@tprel(31)
2962 addis 9,2,x2@tprel@ha
2963 addi 9,9,x2@tprel@l'
2966 tls_as_opt="-a32 --fatal-warnings"
2970 .section ".tdata","awT",@progbits
2978 addi 3,2,ld0@got@tlsgd
2984 addi 3,2,x1@got@tlsld
2990 addis 9,3,x2@dtprel@ha
2991 addi 9,9,x2@dtprel@l
2994 ld 9,x3@got@dtprel(2)
3000 tls_as_opt="-a64 --fatal-warnings"
3004 .section ".tdata","awT",@progbits
3013 l %r1,foo@GOTNTPOFF(%r12)
3014 l %r1,0(%r1):tls_load:foo
3015 bas %r14,0(%r1,%r13):tls_gdcall:foo
3016 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3019 tls_as_opt="-m31 --fatal-warnings"
3023 .section ".tdata","awT",@progbits
3031 lg %r1,foo@GOTNTPOFF(%r12)
3032 larl %r1,foo@INDNTPOFF
3033 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3034 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3037 tls_as_opt="-m64 -Aesame --fatal-warnings"
3039 sh-*-* | sh[34]-*-*)
3041 .section ".tdata","awT",@progbits
3051 tls_as_opt=--fatal-warnings
3055 sparc*-sun-solaris2.*)
3057 tga_func=__tls_get_addr
3063 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3065 .section ".tdata",#alloc,#write,#tls'
3070 .section ".tdata","awT",@progbits'
3073 tls_as_opt="-32 --fatal-warnings"
3075 conftest_s="$conftest_s
3078 sethi %tgd_hi22(foo), %o0
3079 add %o0, %tgd_lo10(foo), %o1
3080 add %l7, %o1, %o0, %tgd_add(foo)
3081 call __tls_get_addr, %tgd_call(foo)
3082 sethi %tldm_hi22(foo), %l1
3083 add %l1, %tldm_lo10(foo), %l2
3084 add %l7, %l2, %o0, %tldm_add(foo)
3085 call __tls_get_addr, %tldm_call(foo)
3086 sethi %tldo_hix22(foo), %l3
3087 xor %l3, %tldo_lox10(foo), %l4
3088 add %o0, %l4, %l5, %tldo_add(foo)
3089 sethi %tie_hi22(foo), %o3
3090 add %o3, %tie_lo10(foo), %o3
3091 ld [%l7 + %o3], %o2, %tie_ld(foo)
3092 add %g7, %o2, %o4, %tie_add(foo)
3093 sethi %tle_hix22(foo), %l1
3094 xor %l1, %tle_lox10(foo), %o5
3095 ld [%g7 + %o5], %o1"
3099 .section ".tdata","awT",@progbits
3102 movi a8, foo@TLSFUNC
3103 movi a10, foo@TLSARG
3104 callx8.tls a8, foo@TLSCALL'
3111 if test "x$enable_tls" = xno ; then
3112 : # TLS explicitly disabled.
3113 elif test "x$enable_tls" = xyes ; then
3114 set_have_as_tls=yes # TLS explicitly enabled.
3115 elif test -z "$tls_first_major"; then
3116 : # If we don't have a check, assume no support.
3118 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3119 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3120 [set_have_as_tls=yes])
3124 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3125 # with TLS support are in use, native TLS cannot work.
3129 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3130 # gld with TLS support are in use, native TLS cannot work.
3133 # TLS was introduced in the Solaris 9 FCS release and backported to
3134 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3135 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3136 # ld and GCC don't support any longer.
3138 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3140 # Check ld and ld.so.1 TLS support.
3141 if echo "$ld_ver" | grep GNU > /dev/null; then
3142 # Assume all interesting versions of GNU ld have TLS support.
3143 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3147 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3149 min_tls_ld_vers_minor=280
3151 # Solaris 8/SPARC ld has TLS support since version 1.272.
3152 sparc*-*-solaris2.8)
3153 min_tls_ld_vers_minor=272
3155 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3157 min_tls_ld_vers_minor=374
3159 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3160 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3161 min_tls_ld_vers_minor=343
3164 if test "$ld_vers_major" -gt 1 || \
3165 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3171 AC_MSG_RESULT($ld_tls_support)
3174 save_LDFLAGS="$LDFLAGS"
3178 AC_MSG_CHECKING(alternate thread library)
3180 # TLS support was backported to Solaris 8 patches, but only lives in
3181 # the alternate thread library which became the default in Solaris 9.
3182 # We want to always use that, irrespective of TLS support.
3184 # Take multilib subdir into account. There's no spec to handle
3185 # this. The 64 symlink exists since Solaris 8.
3186 lwp_dir=/usr/lib/lwp
3187 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3188 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3195 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3196 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3197 [Define to the linker flags to use for -pthread.])
3198 AC_MSG_RESULT($lwp_dir)
3200 AC_MSG_CHECKING(library containing $tga_func)
3201 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3202 # (32-bit x86) only lived in libthread, so check for that. Keep
3203 # set_have_as_tls if found, disable if not.
3204 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3205 # Clear LIBS if we cannot support TLS.
3206 if test $set_have_as_tls = no; then
3209 # Always define LIB_TLS_SPEC, even without TLS support.
3210 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3211 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3212 AC_MSG_RESULT($LIBS)
3215 LDFLAGS="$save_LDFLAGS"
3218 if test $set_have_as_tls = yes ; then
3219 AC_DEFINE(HAVE_AS_TLS, 1,
3220 [Define if your assembler and linker support thread-local storage.])
3223 # Target-specific assembler checks.
3225 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3226 gcc_cv_ld_static_dynamic=no
3227 gcc_cv_ld_static_option='-Bstatic'
3228 gcc_cv_ld_dynamic_option='-Bdynamic'
3229 if test $in_tree_ld = yes ; then
3230 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3231 gcc_cv_ld_static_dynamic=yes
3233 elif test x$gcc_cv_ld != x; then
3234 # Check if linker supports -Bstatic/-Bdynamic option
3235 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3236 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3237 gcc_cv_ld_static_dynamic=yes
3240 # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic.
3242 gcc_cv_ld_static_dynamic=yes
3243 gcc_cv_ld_static_option="-noso"
3244 gcc_cv_ld_dynamic_option="-so_archive"
3246 # IRIX 6 ld supports -Bstatic/-Bdynamic.
3248 gcc_cv_ld_static_dynamic=yes
3250 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3252 gcc_cv_ld_static_dynamic=yes
3257 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3258 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3259 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3260 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3261 [Define to the linker option to disable use of shared objects.])
3262 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3263 [Define to the linker option to enable use of shared objects.])
3265 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3267 if test x"$demangler_in_ld" = xyes; then
3268 AC_MSG_CHECKING(linker --demangle support)
3269 gcc_cv_ld_demangle=no
3270 if test $in_tree_ld = yes; then
3271 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3272 gcc_cv_ld_demangle=yes
3274 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3275 # Check if the GNU linker supports --demangle option
3276 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3277 gcc_cv_ld_demangle=yes
3280 if test x"$gcc_cv_ld_demangle" = xyes; then
3281 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3282 [Define if your linker supports --demangle option.])
3284 AC_MSG_RESULT($gcc_cv_ld_demangle)
3287 AC_MSG_CHECKING(linker plugin support)
3289 if test -f liblto_plugin.la; then
3290 save_ld_ver="$ld_ver"
3291 save_ld_vers_major="$ld_vers_major"
3292 save_ld_vers_minor="$ld_vers_minor"
3293 save_ld_is_gold="$ld_is_gold"
3297 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3299 # FIXME: ld_is_gold?
3300 ld_vers_major="$gcc_cv_gld_major_version"
3301 ld_vers_minor="$gcc_cv_gld_minor_version"
3303 # Determine plugin linker version.
3304 # FIXME: Partial duplicate from above, generalize.
3306 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3307 if echo "$ld_ver" | grep GNU > /dev/null; then
3308 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3310 ld_vers=`echo $ld_ver | sed -n \
3311 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3313 ld_vers=`echo $ld_ver | sed -n \
3314 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3316 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3317 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3322 # Determine plugin support.
3323 if echo "$ld_ver" | grep GNU > /dev/null; then
3324 # Require GNU ld or gold 2.21+ for plugin support by default.
3325 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3327 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3328 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3333 ld_ver="$save_ld_ver"
3334 ld_vers_major="$save_ld_vers_major"
3335 ld_vers_minor="$save_ld_vers_minor"
3336 ld_is_gold="$save_ld_is_gold"
3338 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3339 [Define to the level of your linker's plugin support.])
3340 AC_MSG_RESULT($gcc_cv_lto_plugin)
3343 # All TARGET_ABI_OSF targets.
3344 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3345 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3346 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3349 extbl $3, $2, $3 !lituse_bytoff!1
3350 ldq $2, a($29) !literal!1
3351 ldq $4, b($29) !literal!2
3352 ldq_u $3, 0($2) !lituse_base!1
3353 ldq $27, f($29) !literal!5
3354 jsr $26, ($27), f !lituse_jsr!5
3355 ldah $29, 0($26) !gpdisp!3
3356 lda $0, c($29) !gprel
3357 ldah $1, d($29) !gprelhigh
3358 lda $1, d($1) !gprellow
3359 lda $29, 0($29) !gpdisp!3],,
3360 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3361 [Define if your assembler supports explicit relocations.])])
3362 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3363 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3366 ldq $27, a($29) !literal!1
3367 jsr $26, ($27), a !lituse_jsrdirect!1],,
3368 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3369 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3373 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3374 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3375 [-no-mul-bug-abort], [.text],,
3376 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3377 [Define if your assembler supports the -no-mul-bug-abort option.])])
3381 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3382 [.register %g2, #scratch],,
3383 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3384 [Define if your assembler supports .register.])])
3386 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3388 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3389 [Define if your assembler supports -relax option.])])
3391 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3392 gcc_cv_as_sparc_gotdata_op,,
3399 sethi %gdop_hix22(foo), %g1
3400 xor %g1, %gdop_lox10(foo), %g1
3401 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3402 [if test x$gcc_cv_ld != x \
3403 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3404 if test x$gcc_cv_objdump != x; then
3405 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3406 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3407 gcc_cv_as_sparc_gotdata_op=no
3409 gcc_cv_as_sparc_gotdata_op=yes
3414 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3415 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3417 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3418 gcc_cv_as_sparc_ua_pcrel,,
3426 .uaword %r_disp32(foo)],
3427 [if test x$gcc_cv_ld != x \
3428 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3429 gcc_cv_as_sparc_ua_pcrel=yes
3432 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3433 [Define if your assembler and linker support unaligned PC relative relocs.])
3435 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3436 gcc_cv_as_sparc_ua_pcrel_hidden,,
3441 .uaword %r_disp32(foo)
3442 .byte 0x32, 0x33, 0x34
3447 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3448 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3449 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3450 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3451 if $gcc_cv_objdump -R conftest 2> /dev/null \
3452 | grep 'DISP32' > /dev/null 2>&1; then
3455 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3459 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3460 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3461 ]) # unaligned pcrel relocs
3463 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3464 gcc_cv_as_sparc_offsetable_lo10,,
3467 or %g1, %lo(ab) + 12, %g1
3468 or %g1, %lo(ab + 12), %g1],
3469 [if test x$gcc_cv_objdump != x \
3470 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3471 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3472 gcc_cv_as_sparc_offsetable_lo10=yes
3474 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3475 [Define if your assembler supports offsetable %lo().])])
3479 i[34567]86-*-* | x86_64-*-*)
3483 # Full C++ conformance when using a shared libstdc++-v3 requires some
3484 # support from the Cygwin DLL, which in more recent versions exports
3485 # wrappers to aid in interposing and redirecting operators new, delete,
3486 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3487 # are configuring for a version of Cygwin that exports the wrappers.
3488 if test x$host = x$target; then
3489 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3491 # Can't check presence of libc functions during cross-compile, so
3492 # we just have to assume we're building for an up-to-date target.
3493 gcc_ac_cygwin_dll_wrappers=yes
3495 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3496 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3497 [Define if you want to generate code by default that assumes that the
3498 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3501 cygwin* | pe | mingw32*)
3502 # Recent binutils allows the three-operand form of ".comm" on PE. This
3503 # definition is used unconditionally to initialise the default state of
3504 # the target option variable that governs usage of the feature.
3505 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3506 [2,19,52],,[.comm foo,1,32])
3507 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3508 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3509 [Define if your assembler supports specifying the alignment
3510 of objects allocated using the GAS .comm command.])
3511 # Used for DWARF 2 in PE
3512 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3513 gcc_cv_as_ix86_pe_secrel32,
3519 [if test x$gcc_cv_ld != x \
3520 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3521 gcc_cv_as_ix86_pe_secrel32=yes
3524 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3525 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3526 # Test if the assembler supports the extended form of the .section
3527 # directive that specifies section alignment. LTO support uses this,
3528 # but normally only after installation, so we warn but don't fail the
3529 # configure if LTO is enabled but the assembler does not support it.
3530 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3531 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3532 if test x$gcc_cv_as_section_has_align != xyes; then
3533 case ",$enable_languages," in
3535 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3542 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3543 gcc_cv_as_ix86_filds,,,
3544 [filds mem; fists mem],,
3545 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3546 [Define if your assembler uses filds and fists mnemonics.])])
3548 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3549 gcc_cv_as_ix86_fildq,,,
3550 [fildq mem; fistpq mem],,
3551 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3552 [Define if your assembler uses fildq and fistq mnemonics.])])
3554 gcc_GAS_CHECK_FEATURE([cmov syntax],
3555 gcc_cv_as_ix86_cmov_sun_syntax,,,
3556 [cmovl.l %edx, %eax],,
3557 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3558 [Define if your assembler supports the Sun syntax for cmov.])])
3560 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3561 gcc_cv_as_ix86_ffreep,,,
3563 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3564 [Define if your assembler supports the ffreep mnemonic.])])
3566 gcc_GAS_CHECK_FEATURE([.quad directive],
3567 gcc_cv_as_ix86_quad,,,
3569 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3570 [Define if your assembler supports the .quad directive.])])
3572 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3573 gcc_cv_as_ix86_sahf,,,
3576 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3577 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3579 gcc_GAS_CHECK_FEATURE([swap suffix],
3580 gcc_cv_as_ix86_swap,,,
3581 [movl.s %esp, %ebp],,
3582 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3583 [Define if your assembler supports the swap suffix.])])
3585 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3586 gcc_cv_as_ix86_diff_sect_delta,,,
3594 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3595 [Define if your assembler supports the subtraction of symbols in different sections.])])
3597 # These two are used unconditionally by i386.[ch]; it is to be defined
3598 # to 1 if the feature is present, 0 otherwise.
3599 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3600 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3606 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3607 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3608 [Define true if the assembler supports '.long foo@GOTOFF'.])
3610 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3611 gcc_cv_as_ix86_rep_lock_prefix,,,
3613 lock addl %edi, (%eax,%esi)
3614 lock orl $0, (%esp)],,
3615 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3616 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3618 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3619 gcc_cv_as_ix86_tlsgdplt,,,
3620 [call tls_gd@tlsgdplt],,
3621 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3622 [Define if your assembler supports @tlsgdplt.])])
3624 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3625 gcc_cv_as_ix86_tlsldmplt,,,
3626 [call tls_ld@tlsldmplt],,
3627 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3628 [Define if your assembler supports @tlsldmplt.])])
3633 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3634 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3636 addl r15 = @ltoffx(x#), gp
3638 ld8.mov r16 = [[r15]], x#],,
3639 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3640 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3646 *-*-aix*) conftest_s=' .machine "pwr5"
3650 gcc_GAS_CHECK_FEATURE([.machine directive support],
3651 gcc_cv_as_machine_directive,,,
3652 [ .machine ppc7400])
3653 if test x$gcc_cv_as_machine_directive != xyes; then
3654 echo "*** This target requires an assembler supporting \".machine\"" >&2
3655 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3656 test x$build = x$target && exit 1
3660 *) conftest_s=' .machine power4
3665 gcc_GAS_CHECK_FEATURE([mfcr field support],
3666 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3668 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3669 [Define if your assembler supports mfcr field.])])
3672 *-*-aix*) conftest_s=' .machine "pwr5"
3675 *) conftest_s=' .machine power5
3680 gcc_GAS_CHECK_FEATURE([popcntb support],
3681 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3683 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3684 [Define if your assembler supports popcntb field.])])
3687 *-*-aix*) conftest_s=' .machine "pwr5x"
3690 *) conftest_s=' .machine power5
3695 gcc_GAS_CHECK_FEATURE([fp round support],
3696 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3698 [AC_DEFINE(HAVE_AS_FPRND, 1,
3699 [Define if your assembler supports fprnd.])])
3702 *-*-aix*) conftest_s=' .machine "pwr6"
3705 *) conftest_s=' .machine power6
3710 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3711 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3713 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3714 [Define if your assembler supports mffgpr and mftgpr.])])
3717 *-*-aix*) conftest_s=' .csect .text[[PR]]
3719 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3723 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3724 *) conftest_s=' .text
3726 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3729 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3730 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3732 [AC_DEFINE(HAVE_AS_REL16, 1,
3733 [Define if your assembler supports R_PPC_REL16 relocs.])])
3736 *-*-aix*) conftest_s=' .machine "pwr6"
3739 *) conftest_s=' .machine power6
3744 gcc_GAS_CHECK_FEATURE([compare bytes support],
3745 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3747 [AC_DEFINE(HAVE_AS_CMPB, 1,
3748 [Define if your assembler supports cmpb.])])
3751 *-*-aix*) conftest_s=' .machine "pwr6"
3754 *) conftest_s=' .machine power6
3759 gcc_GAS_CHECK_FEATURE([decimal float support],
3760 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3762 [AC_DEFINE(HAVE_AS_DFP, 1,
3763 [Define if your assembler supports DFP instructions.])])
3766 *-*-aix*) conftest_s=' .machine "pwr7"
3769 *) conftest_s=' .machine power7
3774 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3775 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3777 [AC_DEFINE(HAVE_AS_VSX, 1,
3778 [Define if your assembler supports VSX instructions.])])
3781 *-*-aix*) conftest_s=' .machine "pwr7"
3784 *) conftest_s=' .machine power7
3789 gcc_GAS_CHECK_FEATURE([popcntd support],
3790 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3792 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3793 [Define if your assembler supports POPCNTD instructions.])])
3796 *-*-aix*) conftest_s=' .csect .text[[PR]]
3798 *) conftest_s=' .text
3802 gcc_GAS_CHECK_FEATURE([lwsync support],
3803 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3805 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3806 [Define if your assembler supports LWSYNC instructions.])])
3809 *-*-aix*) conftest_s=' .machine "476"
3812 *) conftest_s=' .machine "476"
3817 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3818 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3820 [AC_DEFINE(HAVE_AS_DCI, 1,
3821 [Define if your assembler supports the DCI/ICI instructions.])])
3823 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3824 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3825 [.gnu_attribute 4,1],,
3826 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3827 [Define if your assembler supports .gnu_attribute.])])
3829 gcc_GAS_CHECK_FEATURE([tls marker support],
3830 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3831 [ bl __tls_get_addr(x@tlsgd)],,
3832 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3833 [Define if your assembler supports arg info for __tls_get_addr.])])
3837 gcc_GAS_CHECK_FEATURE([.ref support],
3838 gcc_cv_as_aix_ref, [2.21.0],,
3839 [ .csect stuff[[rw]]
3845 [AC_DEFINE(HAVE_AS_REF, 1,
3846 [Define if your assembler supports .ref])])
3852 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3853 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3854 [ lw $4,%gp_rel(foo)($4)],,
3855 [if test x$target_cpu_default = x
3856 then target_cpu_default=MASK_EXPLICIT_RELOCS
3857 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3859 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3860 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3861 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3862 [Define if the assembler understands -mno-shared.])])
3864 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3865 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3866 [.gnu_attribute 4,1],,
3867 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3868 [Define if your assembler supports .gnu_attribute.])])
3870 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3871 gcc_cv_as_mips_dtprelword, [2,18,0],,
3872 [.section .tdata,"awT",@progbits
3876 .dtprelword x+0x8000],,
3877 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3878 [Define if your assembler supports .dtprelword.])])
3880 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3881 gcc_cv_as_mips_dspr1_mult,,,
3891 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3892 [Define if your assembler supports DSPR1 mult.])])
3894 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3895 gcc_cv_as_ld_jalr_reloc=no
3896 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3897 if test $in_tree_ld = yes ; then
3898 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3899 && test $in_tree_ld_is_elf = yes; then
3900 gcc_cv_as_ld_jalr_reloc=yes
3902 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3903 echo ' .ent x' > conftest.s
3904 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3905 echo ' ld $25,%call16(y)($28)' >> conftest.s
3906 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3907 echo '1: jalr $25' >> conftest.s
3908 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3909 echo '1: jalr $25' >> conftest.s
3910 echo ' .end x' >> conftest.s
3911 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3912 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3913 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3914 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3915 gcc_cv_as_ld_jalr_reloc=yes
3921 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3922 if test x$target_cpu_default = x; then
3923 target_cpu_default=MASK_RELAX_PIC_CALLS
3925 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3928 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3930 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3931 [gcc_cv_ld_mips_personality_relaxation],
3932 [gcc_cv_ld_mips_personality_relaxation=no
3933 if test $in_tree_ld = yes ; then
3934 if test "$gcc_cv_gld_major_version" -eq 2 \
3935 -a "$gcc_cv_gld_minor_version" -ge 21 \
3936 -o "$gcc_cv_gld_major_version" -gt 2; then
3937 gcc_cv_ld_mips_personality_relaxation=yes
3939 elif test x$gcc_cv_as != x \
3940 -a x$gcc_cv_ld != x \
3941 -a x$gcc_cv_readelf != x ; then
3942 cat > conftest.s <<EOF
3944 .cfi_personality 0x80,indirect_ptr
3951 .section .data,"aw",@progbits
3955 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3956 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3957 if $gcc_cv_readelf -d conftest 2>&1 \
3958 | grep TEXTREL > /dev/null 2>&1; then
3960 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3961 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3964 gcc_cv_ld_mips_personality_relaxation=yes
3968 rm -f conftest.s conftest.o conftest])
3969 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3970 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3971 [Define if your linker can relax absolute .eh_frame personality
3972 pointers into PC-relative form.])
3977 # Mips and HP-UX need the GNU assembler.
3978 # Linux on IA64 might be able to use the Intel assembler.
3981 mips*-*-* | *-*-hpux* )
3982 if test x$gas_flag = xyes \
3983 || test x"$host" != x"$build" \
3984 || test ! -x "$gcc_cv_as" \
3985 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3988 echo "*** This configuration requires the GNU assembler" >&2
3994 # ??? Not all targets support dwarf2 debug_line, even within a version
3995 # of gas. Moreover, we need to emit a valid instruction to trigger any
3996 # info to the output file. So, as supported targets are added to gas 2.11,
3997 # add some instruction here to (also) show we expect this might work.
3998 # ??? Once 2.11 is released, probably need to add first known working
3999 # version to the per-target configury.
4001 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4002 | pa | rs6000 | score | sparc | spu | xstormy16 | xtensa)
4012 if test x"$insn" != x; then
4014 .file 1 \"conftest.s\"
4017 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4018 gcc_cv_as_dwarf2_debug_line,
4019 [elf,2,11,0],, [$conftest_s],
4020 [if test x$gcc_cv_objdump != x \
4021 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4022 | grep debug_line > /dev/null 2>&1; then
4023 gcc_cv_as_dwarf2_debug_line=yes
4026 # The .debug_line file table must be in the exact order that
4027 # we specified the files, since these indices are also used
4028 # by DW_AT_decl_file. Approximate this test by testing if
4029 # the assembler bitches if the same index is assigned twice.
4030 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4031 gcc_cv_as_dwarf2_file_buggy,,,
4035 if test $gcc_cv_as_dwarf2_debug_line = yes \
4036 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4037 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4038 [Define if your assembler supports dwarf2 .file/.loc directives,
4039 and preserves file table indices exactly as given.])
4042 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4043 gcc_cv_as_gdwarf2_flag,
4044 [elf,2,11,0], [--gdwarf2], [$insn],,
4045 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4046 [Define if your assembler supports the --gdwarf2 option.])])
4048 gcc_GAS_CHECK_FEATURE([--gstabs option],
4049 gcc_cv_as_gstabs_flag,
4050 [elf,2,11,0], [--gstabs], [$insn],
4051 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4052 # and warns about it, but still exits successfully. So check for
4054 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4056 else gcc_cv_as_gstabs_flag=yes
4058 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4059 [Define if your assembler supports the --gstabs option.])])
4061 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4062 gcc_cv_as_debug_prefix_map_flag,
4063 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4064 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4065 [Define if your assembler supports the --debug-prefix-map option.])])
4068 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4071 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4072 [Define if your assembler supports .lcomm with an alignment field.])])
4074 AC_ARG_ENABLE(gnu-unique-object,
4075 [AS_HELP_STRING([--enable-gnu-unique-object],
4076 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4077 [case $enable_gnu_unique_object in
4079 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4080 Valid choices are 'yes' and 'no'.]) ;;
4082 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4084 [.type foo, @gnu_unique_object],,
4085 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4086 [[if test x$host = x$build -a x$host = x$target &&
4087 ldd --version 2>/dev/null &&
4088 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4089 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4090 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4091 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4092 if test "$glibcnum" -ge 2011 ; then
4093 enable_gnu_unique_object=yes
4096 if test x$enable_gnu_unique_object = xyes; then
4097 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4098 [Define if your assembler supports @gnu_unique_object.])
4101 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4102 [gcc_cv_as_line_zero],
4103 [gcc_cv_as_line_zero=no
4104 if test $in_tree_gas = yes; then
4105 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4106 elif test "x$gcc_cv_as" != x; then
4107 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4108 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4109 test "x`cat conftest.out`" = x
4111 gcc_cv_as_line_zero=yes
4113 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4114 cat conftest.s >&AS_MESSAGE_LOG_FD
4115 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4116 cat conftest.out >&AS_MESSAGE_LOG_FD
4118 rm -f conftest.o conftest.s conftest.out
4120 if test "x$gcc_cv_as_line_zero" = xyes; then
4121 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4122 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4125 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4126 gcc_cv_ld_eh_frame_hdr=no
4127 if test $in_tree_ld = yes ; then
4128 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4129 && test $in_tree_ld_is_elf = yes; then
4130 gcc_cv_ld_eh_frame_hdr=yes
4132 elif test x$gcc_cv_ld != x; then
4133 if echo "$ld_ver" | grep GNU > /dev/null; then
4134 # Check if linker supports --eh-frame-hdr option
4135 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4136 gcc_cv_ld_eh_frame_hdr=yes
4141 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4142 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4143 gcc_cv_ld_eh_frame_hdr=yes
4149 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4150 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4151 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4152 [Define if your linker supports .eh_frame_hdr.])
4154 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4156 AC_MSG_CHECKING(linker position independent executable support)
4158 if test $in_tree_ld = yes ; then
4159 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4160 && test $in_tree_ld_is_elf = yes; then
4163 elif test x$gcc_cv_ld != x; then
4164 # Check if linker supports -pie option
4165 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4169 if test x"$gcc_cv_ld_pie" = xyes; then
4170 AC_DEFINE(HAVE_LD_PIE, 1,
4171 [Define if your linker supports -pie option.])
4173 AC_MSG_RESULT($gcc_cv_ld_pie)
4175 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4176 gcc_cv_ld_eh_gc_sections=no
4177 if test $in_tree_ld = yes ; then
4178 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4179 && test $in_tree_ld_is_elf = yes; then
4180 gcc_cv_ld_eh_gc_sections=yes
4182 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4183 cat > conftest.s <<EOF
4186 .type _start, @function
4189 .size _start, .-_start
4190 .section .text.foo,"ax",@progbits
4191 .type foo, @function
4195 .section .gcc_except_table.foo,"a",@progbits
4198 .section .eh_frame,"a",@progbits
4201 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4202 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4203 | grep "gc-sections option ignored" > /dev/null; then
4204 gcc_cv_ld_eh_gc_sections=no
4205 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4206 | grep gcc_except_table > /dev/null; then
4207 gcc_cv_ld_eh_gc_sections=yes
4208 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4209 if test x$gcc_cv_as_comdat_group != xyes; then
4210 gcc_cv_ld_eh_gc_sections=no
4211 cat > conftest.s <<EOF
4214 .type _start, @function
4217 .size _start, .-_start
4218 .section .gnu.linkonce.t.foo,"ax",@progbits
4219 .type foo, @function
4223 .section .gcc_except_table.foo,"a",@progbits
4226 .section .eh_frame,"a",@progbits
4229 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4230 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4231 | grep "gc-sections option ignored" > /dev/null; then
4232 gcc_cv_ld_eh_gc_sections=no
4233 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4234 | grep gcc_except_table > /dev/null; then
4235 gcc_cv_ld_eh_gc_sections=yes
4241 rm -f conftest.s conftest.o conftest
4245 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4246 gcc_cv_ld_eh_gc_sections=no
4249 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4250 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4251 [Define if your linker supports garbage collection of
4252 sections in presence of EH frames.])
4254 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4256 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4257 gcc_cv_ld_eh_gc_sections_bug=no
4258 if test $in_tree_ld = yes ; then
4259 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4260 && test $in_tree_ld_is_elf = yes; then
4261 gcc_cv_ld_eh_gc_sections_bug=yes
4263 elif test x$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
4264 gcc_cv_ld_eh_gc_sections_bug=yes
4265 cat > conftest.s <<EOF
4268 .type _start, @function
4271 .size _start, .-_start
4272 .section .text.startup.foo,"ax",@progbits
4273 .type foo, @function
4277 .section .gcc_except_table.foo,"a",@progbits
4280 .section .eh_frame,"a",@progbits
4283 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4284 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4285 | grep "gc-sections option ignored" > /dev/null; then
4287 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4288 | grep gcc_except_table > /dev/null; then
4289 gcc_cv_ld_eh_gc_sections_bug=no
4292 rm -f conftest.s conftest.o conftest
4294 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4295 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4296 [Define if your linker has buggy garbage collection of
4297 sections support when .text.startup.foo like sections are used.])
4299 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4305 AC_CACHE_CHECK(linker --as-needed support,
4306 gcc_cv_ld_as_needed,
4307 [gcc_cv_ld_as_needed=no
4308 if test $in_tree_ld = yes ; then
4309 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4310 && test $in_tree_ld_is_elf = yes; then
4311 gcc_cv_ld_as_needed=yes
4313 elif test x$gcc_cv_ld != x; then
4314 # Check if linker supports --as-needed and --no-as-needed options
4315 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4316 gcc_cv_ld_as_needed=yes
4320 if test x"$gcc_cv_ld_as_needed" = xyes; then
4321 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4322 [Define if your linker supports --as-needed and --no-as-needed options.])
4325 case "$target:$tm_file" in
4326 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4327 AC_CACHE_CHECK(linker support for omitting dot symbols,
4328 gcc_cv_ld_no_dot_syms,
4329 [gcc_cv_ld_no_dot_syms=no
4330 if test $in_tree_ld = yes ; then
4331 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4332 gcc_cv_ld_no_dot_syms=yes
4334 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4335 cat > conftest1.s <<EOF
4339 cat > conftest2.s <<EOF
4340 .section ".opd","aw"
4345 .quad .LEfoo,.TOC.@tocbase,0
4351 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4352 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4353 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4354 gcc_cv_ld_no_dot_syms=yes
4356 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4359 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4360 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4361 [Define if your PowerPC64 linker only needs function descriptor syms.])
4364 AC_CACHE_CHECK(linker large toc support,
4365 gcc_cv_ld_large_toc,
4366 [gcc_cv_ld_large_toc=no
4367 if test $in_tree_ld = yes ; then
4368 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4369 gcc_cv_ld_large_toc=yes
4371 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4372 cat > conftest.s <<EOF
4373 .section ".tbss","awT",@nobits
4379 addis 9,13,ie0@got@tprel@ha
4380 ld 9,ie0@got@tprel@l(9)
4382 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4383 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4384 gcc_cv_ld_large_toc=yes
4386 rm -f conftest conftest.o conftest.s
4389 if test x"$gcc_cv_ld_large_toc" = xyes; then
4390 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4391 [Define if your PowerPC64 linker supports a large TOC.])
4396 AC_CACHE_CHECK(linker --build-id support,
4398 [gcc_cv_ld_buildid=no
4399 if test $in_tree_ld = yes ; then
4400 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4401 "$gcc_cv_gld_minor_version" -ge 18 -o \
4402 "$gcc_cv_gld_major_version" -gt 2 \
4403 && test $in_tree_ld_is_elf = yes; then
4404 gcc_cv_ld_buildid=yes
4406 elif test x$gcc_cv_ld != x; then
4407 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4408 gcc_cv_ld_buildid=yes
4411 if test x"$gcc_cv_ld_buildid" = xyes; then
4412 AC_DEFINE(HAVE_LD_BUILDID, 1,
4413 [Define if your linker supports --build-id.])
4416 AC_ARG_ENABLE(linker-build-id,
4417 [AS_HELP_STRING([--enable-linker-build-id],
4418 [compiler will always pass --build-id to linker])],
4420 enable_linker_build_id=no)
4422 if test x"$enable_linker_build_id" = xyes; then
4423 if test x"$gcc_cv_ld_buildid" = xyes; then
4424 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4425 [Define if gcc should always pass --build-id to linker.])
4427 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4431 # In binutils 2.21, GNU ld gained support for new emulations fully
4432 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4433 AC_CACHE_CHECK(linker *_sol2 emulation support,
4434 gcc_cv_ld_sol2_emulation,
4435 [gcc_cv_ld_sol2_emulation=no
4436 if test $in_tree_ld = yes ; then
4437 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4438 "$gcc_cv_gld_minor_version" -ge 21 -o \
4439 "$gcc_cv_gld_major_version" -gt 2 \
4440 && test $in_tree_ld_is_elf = yes; then
4441 gcc_cv_ld_sol2_emulation=yes
4443 elif test x$gcc_cv_ld != x; then
4444 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4445 grep _sol2 > /dev/null; then
4446 gcc_cv_ld_sol2_emulation=yes
4449 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4450 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4451 [Define if your linker supports the *_sol2 emulations.])
4454 AC_CACHE_CHECK(linker --sysroot support,
4456 [gcc_cv_ld_sysroot=no
4457 if test $in_tree_ld = yes ; then
4458 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4459 gcc_cv_ld_sysroot=yes
4461 elif test x$gcc_cv_ld != x; then
4462 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4463 gcc_cv_ld_sysroot=yes
4466 if test x"$gcc_cv_ld_sysroot" = xyes; then
4467 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4468 [Define if your linker supports --sysroot.])
4471 if test x$with_sysroot = x && test x$host = x$target \
4472 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4473 && test "$prefix" != "NONE"; then
4474 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4475 [Define to PREFIX/include if cpp should also search that directory.])
4478 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4479 if test "x$with_headers" != x; then
4480 target_header_dir=$with_headers
4481 elif test "x$with_sysroot" = x; then
4482 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4483 elif test "x$with_build_sysroot" != "x"; then
4484 target_header_dir="${with_build_sysroot}/usr/include"
4485 elif test "x$with_sysroot" = xyes; then
4486 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4488 target_header_dir="${with_sysroot}/usr/include"
4491 target_header_dir=/usr/include
4494 # Test for stack protector support in target C library.
4495 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4496 gcc_cv_libc_provides_ssp,
4497 [gcc_cv_libc_provides_ssp=no
4499 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4500 [# glibc 2.4 and later provides __stack_chk_fail and
4501 # either __stack_chk_guard, or TLS access to stack guard canary.
4502 if test -f $target_header_dir/features.h \
4503 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4504 $target_header_dir/features.h > /dev/null; then
4505 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4506 $target_header_dir/features.h > /dev/null; then
4507 gcc_cv_libc_provides_ssp=yes
4508 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4509 $target_header_dir/features.h > /dev/null \
4510 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4511 $target_header_dir/features.h > /dev/null; then
4512 gcc_cv_libc_provides_ssp=yes
4513 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4514 $target_header_dir/features.h > /dev/null && \
4515 test -f $target_header_dir/bits/uClibc_config.h && \
4516 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4517 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4518 gcc_cv_libc_provides_ssp=yes
4523 # Avoid complicated tests (see
4524 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4525 # simply assert that glibc does provide this, which is true for all
4526 # realistically usable GNU/Hurd configurations.
4527 gcc_cv_libc_provides_ssp=yes;;
4528 *-*-darwin* | *-*-freebsd*)
4529 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4530 [echo "no __stack_chk_fail on this target"])
4532 *) gcc_cv_libc_provides_ssp=no ;;
4535 if test x$gcc_cv_libc_provides_ssp = xyes; then
4536 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4537 [Define if your target C library provides stack protector support])
4540 # Test for <sys/sdt.h> on the target.
4541 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4542 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4544 if test -f $target_header_dir/sys/sdt.h; then
4545 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4546 [Define if your target C library provides sys/sdt.h])
4548 AC_MSG_RESULT($have_sys_sdt_h)
4550 # Check if TFmode long double should be used by default or not.
4551 # Some glibc targets used DFmode long double, but with glibc 2.4
4552 # and later they can use TFmode.
4554 powerpc*-*-linux* | \
4558 AC_ARG_WITH(long-double-128,
4559 [AS_HELP_STRING([--with-long-double-128],
4560 [use 128-bit long double by default])],
4561 gcc_cv_target_ldbl128="$with_long_double_128",
4562 [[gcc_cv_target_ldbl128=no
4563 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4564 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4565 && gcc_cv_target_ldbl128=yes
4569 if test x$gcc_cv_target_ldbl128 = xyes; then
4570 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4571 [Define if TFmode long double should be the default])
4574 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4575 gcc_cv_target_dl_iterate_phdr=unknown
4578 # <link.h> needs both a dl_iterate_phdr declaration and support for
4579 # compilation with largefile support.
4580 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4581 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4582 gcc_cv_target_dl_iterate_phdr=yes
4584 gcc_cv_target_dl_iterate_phdr=no
4588 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4589 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4590 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4591 [Define if your target C library provides the `dl_iterate_phdr' function.])
4593 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4595 # Find out what GC implementation we want, or may, use.
4597 [AS_HELP_STRING([--with-gc={page,zone}],
4598 [choose the garbage collection mechanism to use
4599 with the compiler])],
4606 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4609 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4614 echo "Using $GGC for garbage collection."
4616 # Libraries to use on the host. This will normally be set by the top
4617 # level Makefile. Here we simply capture the value for our Makefile.
4618 if test -z "${HOST_LIBS+set}"; then
4623 # Use the system's zlib library.
4625 zlibinc="-I\$(srcdir)/../zlib"
4626 AC_ARG_WITH(system-zlib,
4627 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4634 dnl Very limited version of automake's enable-maintainer-mode
4636 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4637 dnl maintainer-mode is disabled by default
4638 AC_ARG_ENABLE(maintainer-mode,
4639 [AS_HELP_STRING([--enable-maintainer-mode],
4640 [enable make rules and dependencies not useful
4641 (and sometimes confusing) to the casual installer])],
4642 maintainer_mode=$enableval,
4645 AC_MSG_RESULT($maintainer_mode)
4647 if test "$maintainer_mode" = "yes"; then
4658 # Make empty files to contain the specs and options for each language.
4659 # Then add #include lines to for a compiler that has specs and/or options.
4665 # These (without "all_") are set in each config-lang.in.
4666 # `language' must be a single word so is spelled singularly.
4669 all_outputs='Makefile'
4670 # List of language makefile fragments.
4672 # Additional files for gengtype
4673 all_gtfiles="$target_gtfiles"
4675 # These are the languages that are set in --enable-languages,
4676 # and are available in the GCC tree.
4677 all_selected_languages=
4679 # Add the language fragments.
4680 # Languages are added via two mechanisms. Some information must be
4681 # recorded in makefile variables, these are defined in config-lang.in.
4682 # We accumulate them and plug them into the main Makefile.
4683 # The other mechanism is a set of hooks for each of the main targets
4684 # like `clean', `install', etc.
4686 language_hooks="Make-hooks"
4688 for lang in ${srcdir}/*/config-lang.in
4691 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4693 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4694 if test "x$lang_alias" = x
4696 echo "$lang doesn't set \$language." 1>&2
4699 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4700 subdirs="$subdirs $subdir"
4702 # $gcc_subdir is where the gcc integration files are to be found
4703 # for a language, both for internal compiler purposes (compiler
4704 # sources implementing front-end to GCC tree converters), and for
4705 # build infrastructure purposes (Make-lang.in, etc.)
4707 # This will be <subdir> (relative to $srcdir) if a line like
4708 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4709 # is found in <langdir>/config-lang.in, and will remain <langdir>
4712 # Except for the language alias (fetched above), the regular
4713 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4714 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4715 # only this and the language alias.
4717 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4718 if [ "$gcc_subdir" = "" ]; then
4719 gcc_subdir="$subdir"
4722 case ",$enable_languages," in
4724 all_selected_languages="$all_selected_languages $lang_alias"
4725 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4726 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4738 . ${srcdir}/$gcc_subdir/config-lang.in
4739 if test "x$language" = x
4741 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4746 case ",$enable_languages," in
4749 for i in $subdir_requires; do
4750 test -f "${srcdir}/$i/config-lang.in" && continue
4758 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4759 if test -f $srcdir/$gcc_subdir/lang.opt; then
4760 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4761 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4763 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4764 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4766 all_languages="$all_languages $language"
4767 all_compilers="$all_compilers $compilers"
4768 all_outputs="$all_outputs $outputs"
4769 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4770 case ",$enable_languages," in
4772 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4774 AC_SUBST(enable_lto)
4780 # Pick up gtfiles for c
4782 . ${srcdir}/c-config-lang.in
4783 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4786 for language in $all_selected_languages
4788 check_languages="$check_languages check-$language"
4791 # We link each language in with a set of hooks, reached indirectly via
4792 # lang.${target}. Only do so for selected languages.
4796 target_list="all.cross start.encap rest.encap tags \
4797 install-common install-man install-info install-pdf install-html dvi \
4798 pdf html uninstall info man srcextra srcman srcinfo \
4799 mostlyclean clean distclean maintainer-clean install-plugin"
4801 for t in $target_list
4804 for lang in $all_selected_languages
4808 echo "lang.$t: $x" >> Make-hooks
4812 # Option include files
4815 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4816 option_includes="option-includes.mk"
4817 AC_SUBST_FILE(option_includes)
4825 echo "dir ." > .gdbinit
4826 echo "dir ${srcdir}" >> .gdbinit
4827 if test x$gdb_needs_out_file_path = xyes
4829 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4831 if test "x$subdirs" != x; then
4834 echo "dir ${srcdir}/$s" >> .gdbinit
4837 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4839 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4840 AC_SUBST(gcc_tooldir)
4843 # Find a directory in which to install a shared libgcc.
4845 AC_ARG_ENABLE(version-specific-runtime-libs,
4846 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
4847 [specify that runtime libraries should be
4848 installed in a compiler-specific directory])])
4850 AC_ARG_WITH(slibdir,
4851 [AS_HELP_STRING([--with-slibdir=DIR], [shared libraries in DIR @<:@LIBDIR@:>@])],
4852 slibdir="$with_slibdir",
4853 if test "${enable_version_specific_runtime_libs+set}" = set; then
4854 slibdir='$(libsubdir)'
4855 elif test "$host" != "$target"; then
4856 slibdir='$(build_tooldir)/lib'
4862 # Substitute configuration variables
4865 AC_SUBST(all_compilers)
4866 AC_SUBST(all_gtfiles)
4867 AC_SUBST(all_lang_makefrags)
4868 AC_SUBST(all_languages)
4869 AC_SUBST(all_selected_languages)
4870 AC_SUBST(build_exeext)
4871 AC_SUBST(build_install_headers_dir)
4872 AC_SUBST(build_xm_file_list)
4873 AC_SUBST(build_xm_include_list)
4874 AC_SUBST(build_xm_defines)
4875 AC_SUBST(build_file_translate)
4876 AC_SUBST(check_languages)
4877 AC_SUBST(cpp_install_dir)
4878 AC_SUBST(xmake_file)
4879 AC_SUBST(tmake_file)
4880 AC_SUBST(TM_ENDIAN_CONFIG)
4881 AC_SUBST(TM_MULTILIB_CONFIG)
4882 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4883 AC_SUBST(extra_gcc_objs)
4884 AC_SUBST(user_headers_inc_next_pre)
4885 AC_SUBST(user_headers_inc_next_post)
4886 AC_SUBST(extra_headers_list)
4887 AC_SUBST(extra_objs)
4888 AC_SUBST(extra_parts)
4889 AC_SUBST(extra_passes)
4890 AC_SUBST(extra_programs)
4891 AC_SUBST(float_h_file)
4892 AC_SUBST(gcc_config_arguments)
4893 AC_SUBST(gcc_gxx_include_dir)
4894 AC_SUBST(host_exeext)
4895 AC_SUBST(host_xm_file_list)
4896 AC_SUBST(host_xm_include_list)
4897 AC_SUBST(host_xm_defines)
4898 AC_SUBST(out_host_hook_obj)
4900 AC_SUBST(lang_opt_files)
4901 AC_SUBST(lang_specs_files)
4902 AC_SUBST(lang_tree_files)
4903 AC_SUBST(local_prefix)
4905 AC_SUBST(objc_boehm_gc)
4907 AC_SUBST(out_object_file)
4908 AC_SUBST(common_out_file)
4909 AC_SUBST(common_out_object_file)
4910 AC_SUBST(thread_file)
4911 AC_SUBST(tm_file_list)
4912 AC_SUBST(tm_include_list)
4913 AC_SUBST(tm_defines)
4914 AC_SUBST(libgcc_tm_file_list)
4915 AC_SUBST(libgcc_tm_include_list)
4916 AC_SUBST(tm_p_file_list)
4917 AC_SUBST(tm_p_include_list)
4918 AC_SUBST(xm_file_list)
4919 AC_SUBST(xm_include_list)
4920 AC_SUBST(xm_defines)
4921 AC_SUBST(use_gcc_stdint)
4922 AC_SUBST(c_target_objs)
4923 AC_SUBST(cxx_target_objs)
4924 AC_SUBST(fortran_target_objs)
4925 AC_SUBST(target_cpu_default)
4927 AC_SUBST_FILE(language_hooks)
4930 if test x${build} = x${host} ; then
4931 if test x${host} = x${target} ; then
4932 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4934 echo "Links are now set up to build a cross-compiler" 1>&2
4935 echo " from ${host} to ${target}." 1>&2
4938 if test x${host} = x${target} ; then
4939 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4940 echo " for ${target}." 1>&2
4942 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4943 echo " from ${host} to ${target}." 1>&2
4947 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4948 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4950 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4951 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4953 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4954 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4955 if test "x${CLOOGLIBS}" != "x" ; then
4956 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4959 # Check for plugin support
4960 AC_ARG_ENABLE(plugin,
4961 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
4962 enable_plugin=$enableval,
4963 enable_plugin=yes; default_plugin=yes)
4969 if test x$build = x$host; then
4970 export_sym_check="nm${exeext} -g"
4971 elif test x$host = x$target; then
4972 export_sym_check="$gcc_cv_nm -g"
4978 if test x$build = x$host; then
4979 export_sym_check="objdump${exeext} -T"
4980 elif test x$host = x$target; then
4981 export_sym_check="$gcc_cv_objdump -T"
4988 if test x"$enable_plugin" = x"yes"; then
4990 AC_MSG_CHECKING([for exported symbols])
4991 if test "x$export_sym_check" != x; then
4992 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4993 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4994 if $export_sym_check conftest | grep foobar > /dev/null; then
4995 : # No need to use a flag
4996 AC_MSG_RESULT([yes])
4998 AC_MSG_RESULT([yes])
4999 AC_MSG_CHECKING([for -rdynamic])
5000 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
5001 if $export_sym_check conftest | grep foobar > /dev/null; then
5003 pluginlibs="-rdynamic"
5008 AC_MSG_RESULT([$plugin_rdynamic])
5011 AC_MSG_RESULT([unable to check])
5016 AC_SEARCH_LIBS([dlopen], [dl])
5017 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5018 pluginlibs="$pluginlibs -ldl"
5022 # Check that we can build shared objects with -fPIC -shared
5023 saved_LDFLAGS="$LDFLAGS"
5024 saved_CFLAGS="$CFLAGS"
5027 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5028 CFLAGS="$CFLAGS -fPIC"
5029 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5032 CFLAGS="$CFLAGS -fPIC"
5033 LDFLAGS="$LDFLAGS -fPIC -shared"
5036 AC_MSG_CHECKING([for -fPIC -shared])
5038 [extern int X;],[return X == 0;],
5039 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5040 [AC_MSG_RESULT([no]); have_pic_shared=no])
5041 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5045 LDFLAGS="$saved_LDFLAGS"
5046 CFLAGS="$saved_CFLAGS"
5048 # If plugin support had been requested but not available, fail.
5049 if test x"$enable_plugin" = x"no" ; then
5050 if test x"$default_plugin" != x"yes"; then
5052 Building GCC with plugin support requires a host that supports
5053 -fPIC, -shared, -ldl and -rdynamic.])
5058 AC_SUBST(pluginlibs)
5059 AC_SUBST(enable_plugin)
5060 if test x"$enable_plugin" = x"yes"; then
5061 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5065 AC_ARG_ENABLE(libquadmath-support,
5066 [AS_HELP_STRING([--disable-libquadmath-support],
5067 [disable libquadmath support for Fortran])],
5068 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5069 ENABLE_LIBQUADMATH_SUPPORT=yes)
5070 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5071 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5072 [Define to 1 to enable libquadmath support])
5076 # Specify what hash style to use by default.
5077 AC_ARG_WITH([linker-hash-style],
5078 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5079 [specify the linker hash style])],
5080 [case x"$withval" in
5082 LINKER_HASH_STYLE=sysv
5085 LINKER_HASH_STYLE=gnu
5088 LINKER_HASH_STYLE=both
5091 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5094 [LINKER_HASH_STYLE=''])
5095 if test x"${LINKER_HASH_STYLE}" != x; then
5096 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5097 [The linker hash style])
5100 # Configure the subdirectories
5101 # AC_CONFIG_SUBDIRS($subdirs)
5103 # Create the Makefile
5104 # and configure language subdirectories
5105 AC_CONFIG_FILES($all_outputs)
5107 AC_CONFIG_COMMANDS([default],
5109 case ${CONFIG_HEADERS} in
5110 *auto-host.h:config.in*)
5113 # Make sure all the subdirs exist.
5114 for d in $subdirs doc build common c-family
5116 test -d $d || mkdir $d
5119 [subdirs='$subdirs'])