2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
5 # 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
7 #This file is part of GCC.
9 #GCC is free software; you can redistribute it and/or modify it under
10 #the terms of the GNU General Public License as published by the Free
11 #Software Foundation; either version 3, or (at your option) any later
14 #GCC is distributed in the hope that it will be useful, but WITHOUT
15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 #You should have received a copy of the GNU General Public License
20 #along with GCC; see the file COPYING3. If not see
21 #<http://www.gnu.org/licenses/>.
23 # --------------------------------
24 # Initialization and sanity checks
25 # --------------------------------
29 AC_CONFIG_SRCDIR(tree.c)
30 AC_CONFIG_HEADER(auto-host.h:config.in)
32 gcc_version=`cat $srcdir/BASE-VER`
34 # Determine the host, build, and target systems
39 # Determine the noncanonical target name, for directory use.
40 ACX_NONCANONICAL_TARGET
42 # Determine the target- and build-specific subdirectories
45 # Set program_transform_name
48 # Check for bogus environment variables.
49 # Test if LIBRARY_PATH contains the notation for the current directory
50 # since this would lead to problems installing/building glibc.
51 # LIBRARY_PATH contains the current directory if one of the following
53 # - one of the terminals (":" and ";") is the first or last sign
54 # - two terminals occur directly after each other
55 # - the path contains an element with a dot in it
56 AC_MSG_CHECKING(LIBRARY_PATH variable)
58 case ${LIBRARY_PATH} in
59 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
60 library_path_setting="contains current directory"
63 library_path_setting="ok"
67 AC_MSG_RESULT($library_path_setting)
68 if test "$library_path_setting" != "ok"; then
70 *** LIBRARY_PATH shouldn't contain the current directory when
71 *** building gcc. Please change the environment variable
72 *** and run configure again.])
75 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
76 # since this would lead to problems installing/building glibc.
77 # GCC_EXEC_PREFIX contains the current directory if one of the following
79 # - one of the terminals (":" and ";") is the first or last sign
80 # - two terminals occur directly after each other
81 # - the path contains an element with a dot in it
82 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
84 case ${GCC_EXEC_PREFIX} in
85 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
86 gcc_exec_prefix_setting="contains current directory"
89 gcc_exec_prefix_setting="ok"
93 AC_MSG_RESULT($gcc_exec_prefix_setting)
94 if test "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [AS_HELP_STRING([--with-local-prefix=DIR],
109 [specifies directory to put local include])],
110 [case "${withval}" in
111 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
113 *) local_prefix=$with_local_prefix ;;
116 # Default local prefix if it is empty
117 if test x$local_prefix = x; then
118 local_prefix=/usr/local
121 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
122 # passed in by the toplevel make and thus we'd get different behavior
123 # depending on where we built the sources.
125 # Specify the g++ header file directory
126 AC_ARG_WITH(gxx-include-dir,
127 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
128 [specifies directory to put g++ header files])],
129 [case "${withval}" in
130 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
132 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
135 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
136 if test x${gcc_gxx_include_dir} = x; then
137 if test x${enable_version_specific_runtime_libs} = xyes; then
138 gcc_gxx_include_dir='${libsubdir}/include/c++'
140 libstdcxx_incdir='include/c++/$(version)'
141 if test x$host != x$target; then
142 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
144 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
148 AC_ARG_WITH(cpp_install_dir,
149 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
150 [install the user visible C preprocessor in DIR
151 (relative to PREFIX) as well as PREFIX/bin])],
152 [if test x$withval = xyes; then
153 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
154 elif test x$withval != xno; then
155 cpp_install_dir=$withval
158 # We would like to our source tree to be readonly. However when releases or
159 # pre-releases are generated, the flex/bison generated files as well as the
160 # various formats of manuals need to be included along with the rest of the
161 # sources. Therefore we have --enable-generated-files-in-srcdir to do
164 AC_MSG_CHECKING([whether to place generated files in the source directory])
165 dnl generated-files-in-srcdir is disabled by default
166 AC_ARG_ENABLE(generated-files-in-srcdir,
167 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
168 [put copies of generated files in source dir
169 intended for creating source tarballs for users
170 without texinfo bison or flex])],
171 generated_files_in_srcdir=$enableval,
172 generated_files_in_srcdir=no)
174 AC_MSG_RESULT($generated_files_in_srcdir)
176 if test "$generated_files_in_srcdir" = "yes"; then
183 # -------------------
184 # Find default linker
185 # -------------------
189 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
190 gnu_ld_flag="$with_gnu_ld",
193 # With pre-defined ld
195 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
196 DEFAULT_LINKER="$with_ld")
197 if test x"${DEFAULT_LINKER+set}" = x"set"; then
198 if test ! -x "$DEFAULT_LINKER"; then
199 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
200 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
203 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
204 [Define to enable the use of a default linker.])
207 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
208 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
210 AC_MSG_CHECKING([whether a default linker was specified])
211 if test x"${DEFAULT_LINKER+set}" = x"set"; then
212 if test x"$gnu_ld_flag" = x"no"; then
213 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
215 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
221 # With demangler in GNU ld
222 AC_ARG_WITH(demangler-in-ld,
223 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
224 demangler_in_ld="$with_demangler_in_ld",
227 # ----------------------
228 # Find default assembler
229 # ----------------------
233 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
234 gas_flag="$with_gnu_as",
238 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
239 DEFAULT_ASSEMBLER="$with_as")
240 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
241 if test ! -x "$DEFAULT_ASSEMBLER"; then
242 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
243 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
246 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
247 [Define to enable the use of a default assembler.])
250 gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
251 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
253 AC_MSG_CHECKING([whether a default assembler was specified])
254 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
255 if test x"$gas_flag" = x"no"; then
256 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
258 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
268 # If a non-executable a.out is present (e.g. created by GNU as above even if
269 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
270 # file, even when creating an executable, so an execution test fails.
271 # Remove possible default executable files to avoid this.
273 # FIXME: This really belongs into AC_PROG_CC and can be removed once
274 # Autoconf includes it.
275 rm -f a.out a.exe b.out
277 # Find the native compiler
281 ACX_PROG_GNAT([-I"$srcdir"/ada])
283 # autoconf is lame and doesn't give us any substitution variable for this.
284 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
285 NO_MINUS_C_MINUS_O=yes
287 OUTPUT_OPTION='-o $@'
289 AC_SUBST(NO_MINUS_C_MINUS_O)
290 AC_SUBST(OUTPUT_OPTION)
292 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
293 # optimizations to be activated explicitly by the toplevel.
296 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
300 # Determine PICFLAG for target gnatlib.
301 GCC_PICFLAG_FOR_TARGET
302 AC_SUBST(PICFLAG_FOR_TARGET)
304 # -------------------------
305 # Check C compiler features
306 # -------------------------
308 AC_USE_SYSTEM_EXTENSIONS
314 # sizeof(char) is 1 by definition.
315 AC_CHECK_SIZEOF(void *)
316 AC_CHECK_SIZEOF(short)
318 AC_CHECK_SIZEOF(long)
319 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
320 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
323 # ---------------------
324 # Warnings and checking
325 # ---------------------
327 # Check $CC warning features (if it's GCC).
328 # We want to use -pedantic, but we don't want warnings about
332 # So, we only use -pedantic if we can disable those warnings.
334 ACX_PROG_CC_WARNING_OPTS(
335 m4_quote(m4_do([-W -Wall -Wwrite-strings -Wcast-qual])), [loose_warn])
336 ACX_PROG_CC_WARNING_OPTS(
337 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
339 ACX_PROG_CC_WARNING_OPTS(
340 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
341 ACX_PROG_CC_WARNING_OPTS(
342 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
343 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
344 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
345 [-Wno-overlength-strings])), [strict_warn])
346 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
348 # The above macros do nothing if the compiler is not GCC. However, the
349 # Makefile has more goo to add other flags, so these variables are used
350 # to enable warnings only for GCC.
353 if test "x$GCC" = "xyes"; then
354 warn_cflags='$(GCC_WARN_CFLAGS)'
355 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
357 AC_SUBST(warn_cflags)
358 AC_SUBST(warn_cxxflags)
360 # Enable expensive internal checks
362 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
366 AC_ARG_ENABLE(checking,
367 [AS_HELP_STRING([[--enable-checking[=LIST]]],
368 [enable expensive run-time checks. With LIST,
369 enable only specific categories of checks.
370 Categories are: yes,no,all,none,release.
371 Flags are: assert,df,fold,gc,gcac,gimple,misc,
372 rtlflag,rtl,runtime,tree,valgrind,types])],
373 [ac_checking_flags="${enableval}"],[
374 # Determine the default checks.
375 if test x$is_release = x ; then
376 ac_checking_flags=yes
378 ac_checking_flags=release
380 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
381 for check in release $ac_checking_flags
384 # these set all the flags to specific states
385 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
386 ac_fold_checking= ; ac_gc_checking=1 ;
387 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
388 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
389 ac_tree_checking=1 ; ac_valgrind_checking= ;
390 ac_types_checking=1 ;;
391 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
392 ac_fold_checking= ; ac_gc_checking= ;
393 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
394 ac_rtlflag_checking= ; ac_runtime_checking= ;
395 ac_tree_checking= ; ac_valgrind_checking= ;
396 ac_types_checking= ;;
397 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
398 ac_fold_checking=1 ; ac_gc_checking=1 ;
399 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
400 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
401 ac_tree_checking=1 ; ac_valgrind_checking= ;
402 ac_types_checking=1 ;;
403 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
404 ac_fold_checking= ; ac_gc_checking= ;
405 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
406 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
407 ac_tree_checking= ; ac_valgrind_checking= ;
408 ac_types_checking= ;;
409 # these enable particular checks
410 assert) ac_assert_checking=1 ;;
411 df) ac_df_checking=1 ;;
412 fold) ac_fold_checking=1 ;;
413 gc) ac_gc_checking=1 ;;
414 gcac) ac_gc_always_collect=1 ;;
415 gimple) ac_gimple_checking=1 ;;
416 misc) ac_checking=1 ;;
417 rtl) ac_rtl_checking=1 ;;
418 rtlflag) ac_rtlflag_checking=1 ;;
419 runtime) ac_runtime_checking=1 ;;
420 tree) ac_tree_checking=1 ;;
421 types) ac_types_checking=1 ;;
422 valgrind) ac_valgrind_checking=1 ;;
423 *) AC_MSG_ERROR(unknown check category $check) ;;
429 if test x$ac_checking != x ; then
430 AC_DEFINE(ENABLE_CHECKING, 1,
431 [Define if you want more run-time sanity checks. This one gets a grab
432 bag of miscellaneous but relatively cheap checks.])
433 nocommon_flag=-fno-common
435 AC_SUBST(nocommon_flag)
436 if test x$ac_df_checking != x ; then
437 AC_DEFINE(ENABLE_DF_CHECKING, 1,
438 [Define if you want more run-time sanity checks for dataflow.])
440 if test x$ac_assert_checking != x ; then
441 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
442 [Define if you want assertions enabled. This is a cheap check.])
444 if test x$ac_gimple_checking != x ; then
445 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
446 [Define if you want operations on GIMPLE (the basic data structure of
447 the high-level optimizers) to be checked for dynamic type safety at
448 runtime. This is moderately expensive.])
450 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
451 if test x$ac_runtime_checking != x ; then
452 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
453 [Define if you want runtime assertions enabled. This is a cheap check.])
455 if test x$ac_tree_checking != x ; then
456 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
457 [Define if you want all operations on trees (the basic data
458 structure of the front ends) to be checked for dynamic type safety
459 at runtime. This is moderately expensive. The tree browser debugging
460 routines will also be enabled by this option.
462 TREEBROWSER=tree-browser.o
464 if test x$ac_types_checking != x ; then
465 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
466 [Define if you want all gimple types to be verified after gimplifiation.
470 AC_SUBST(TREEBROWSER)
471 if test x$ac_rtl_checking != x ; then
472 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
473 [Define if you want all operations on RTL (the basic data structure
474 of the optimizer and back end) to be checked for dynamic type safety
475 at runtime. This is quite expensive.])
477 if test x$ac_rtlflag_checking != x ; then
478 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
479 [Define if you want RTL flag accesses to be checked against the RTL
480 codes that are supported for each access macro. This is relatively
483 if test x$ac_gc_checking != x ; then
484 AC_DEFINE(ENABLE_GC_CHECKING, 1,
485 [Define if you want the garbage collector to do object poisoning and
486 other memory allocation checks. This is quite expensive.])
488 if test x$ac_gc_always_collect != x ; then
489 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
490 [Define if you want the garbage collector to operate in maximally
491 paranoid mode, validating the entire heap and collecting garbage at
492 every opportunity. This is extremely expensive.])
494 if test x$ac_fold_checking != x ; then
495 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
496 [Define if you want fold checked that it never destructs its argument.
497 This is quite expensive.])
499 valgrind_path_defines=
502 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
503 dnl # an if statement. This was the source of very frustrating bugs
504 dnl # in converting to autoconf 2.5x!
505 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
507 if test x$ac_valgrind_checking != x ; then
508 # It is certainly possible that there's valgrind but no valgrind.h.
509 # GCC relies on making annotations so we must have both.
510 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
511 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
512 [[#include <valgrind/memcheck.h>
513 #ifndef VALGRIND_DISCARD
514 #error VALGRIND_DISCARD not defined
516 [gcc_cv_header_valgrind_memcheck_h=yes],
517 [gcc_cv_header_valgrind_memcheck_h=no])
518 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
519 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
520 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
521 [[#include <memcheck.h>
522 #ifndef VALGRIND_DISCARD
523 #error VALGRIND_DISCARD not defined
525 [gcc_cv_header_memcheck_h=yes],
526 [gcc_cv_header_memcheck_h=no])
527 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
528 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
529 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
530 if test "x$valgrind_path" = "x" \
531 || (test $have_valgrind_h = no \
532 && test $gcc_cv_header_memcheck_h = no \
533 && test $gcc_cv_header_valgrind_memcheck_h = no); then
534 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
536 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
537 valgrind_command="$valgrind_path -q"
538 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
539 [Define if you want to run subprograms and generated programs
540 through valgrind (a memory checker). This is extremely expensive.])
541 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
542 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
543 [Define if valgrind's valgrind/memcheck.h header is installed.])
545 if test $gcc_cv_header_memcheck_h = yes; then
546 AC_DEFINE(HAVE_MEMCHECK_H, 1,
547 [Define if valgrind's memcheck.h header is installed.])
550 AC_SUBST(valgrind_path_defines)
551 AC_SUBST(valgrind_command)
553 # Enable code coverage collection
554 AC_ARG_ENABLE(coverage,
555 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
556 [enable compiler's code coverage collection.
557 Use to measure compiler performance and locate
558 unused parts of the compiler. With LEVEL, specify
559 optimization. Values are opt, noopt,
561 [case "${enableval}" in
563 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
566 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
569 # a.k.a. --disable-coverage
573 AC_MSG_ERROR(unknown coverage setting $enableval)
577 AC_SUBST(coverage_flags)
579 AC_ARG_ENABLE(gather-detailed-mem-stats,
580 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
581 [enable detailed memory allocation stats gathering])], [],
582 [enable_gather_detailed_mem_stats=no])
583 if test x$enable_gather_detailed_mem_stats = xyes ; then
584 AC_DEFINE(GATHER_STATISTICS, 1,
585 [Define to enable detailed memory allocation stats gathering.])
588 # -------------------------------
589 # Miscenalleous configure options
590 # -------------------------------
592 # See if we are building gcc with C++.
593 AC_ARG_ENABLE(build-with-cxx,
594 [AS_HELP_STRING([--enable-build-with-cxx],
595 [build with C++ compiler instead of C compiler])],
596 ENABLE_BUILD_WITH_CXX=$enableval,
597 ENABLE_BUILD_WITH_CXX=no)
598 AC_SUBST(ENABLE_BUILD_WITH_CXX)
599 if test "$ENABLE_BUILD_WITH_CXX" = "yes"; then
600 AC_DEFINE(ENABLE_BUILD_WITH_CXX, 1,
601 [Define if building with C++.])
606 [AS_HELP_STRING([--with-stabs],
607 [arrange to use stabs instead of host debug format])],
611 # Determine whether or not multilibs are enabled.
612 AC_ARG_ENABLE(multilib,
613 [AS_HELP_STRING([--enable-multilib],
614 [enable library support for multiple ABIs])],
615 [], [enable_multilib=yes])
616 AC_SUBST(enable_multilib)
618 # Enable __cxa_atexit for C++.
619 AC_ARG_ENABLE(__cxa_atexit,
620 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
623 # Enable C extension for decimal float if target supports it.
624 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
626 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
627 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
628 [Define to 1 to enable decimal float extension to C.])
630 # Use default_decimal_float for dependency.
631 enable_decimal_float=$default_decimal_float
633 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
634 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
635 [Define to 1 to specify that we are using the BID decimal floating
636 point format instead of DPD])
638 # Enable C extension for fixed-point arithmetic.
639 AC_ARG_ENABLE(fixed-point,
640 [AS_HELP_STRING([--enable-fixed-point],
641 [enable fixed-point arithmetic extension to C])],
646 enable_fixed_point=yes
652 AC_MSG_WARN([fixed-point is not supported on IRIX, ignored])
653 enable_fixed_point=no
656 enable_fixed_point=yes
661 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
662 enable_fixed_point=no
666 AC_SUBST(enable_fixed_point)
668 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
669 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
670 [Define to 1 to enable fixed-point arithmetic extension to C.])
673 # Pass with no value to take the default
674 # Pass with a value to specify a thread package
675 AC_ARG_ENABLE(threads,
676 [AS_HELP_STRING([[--enable-threads[=LIB]]],
677 [enable thread usage for target GCC,
678 using LIB thread package])],,
682 [AS_HELP_STRING([--enable-tls],
683 [enable or disable generation of tls code
684 overriding the assembler check for tls support])],
688 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
689 Valid choices are 'yes' and 'no'.]) ;;
693 AC_ARG_ENABLE(objc-gc,
694 [AS_HELP_STRING([--enable-objc-gc],
695 [enable the use of Boehm's garbage collector with
696 the GNU Objective-C runtime])],
697 if test x$enable_objc_gc = xno; then
705 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
706 dwarf2="$with_dwarf2",
709 AC_ARG_ENABLE(shared,
710 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
712 case $enable_shared in
716 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
717 for pkg in $enableval; do
718 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
725 ], [enable_shared=yes])
726 AC_SUBST(enable_shared)
728 AC_ARG_WITH([native-system-header-dir],
729 [ --with-native-system-header-dir=dir
730 use dir as the directory to look for standard
731 system header files in. Defaults to /usr/include.],
733 case ${with_native_system_header_dir} in
734 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
735 /* | [[A-Za-z]]:[[\\/]]*) ;;
736 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
738 configured_native_system_header_dir="${withval}"
739 ], [configured_native_system_header_dir=])
741 AC_ARG_WITH(build-sysroot,
742 [AS_HELP_STRING([--with-build-sysroot=sysroot],
743 [use sysroot as the system root during the build])],
744 [if test x"$withval" != x ; then
745 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
747 [SYSROOT_CFLAGS_FOR_TARGET=])
748 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
751 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
752 [search for usr/lib, usr/include, et al, within DIR])],
754 case ${with_sysroot} in
755 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
756 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
759 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
760 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
762 if test "x$prefix" = xNONE; then
763 test_prefix=/usr/local
767 if test "x$exec_prefix" = xNONE; then
768 test_exec_prefix=$test_prefix
770 test_exec_prefix=$exec_prefix
772 case ${TARGET_SYSTEM_ROOT} in
773 "${test_prefix}"|"${test_prefix}/"*|\
774 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
775 '${prefix}'|'${prefix}/'*|\
776 '${exec_prefix}'|'${exec_prefix}/'*)
777 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
778 TARGET_SYSTEM_ROOT_DEFINE="$t"
783 TARGET_SYSTEM_ROOT_DEFINE=
784 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
786 AC_SUBST(TARGET_SYSTEM_ROOT)
787 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
788 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
791 [AS_HELP_STRING([--with-specs=SPECS],
792 [add SPECS to driver command-line processing])],
793 [CONFIGURE_SPECS=$withval],
796 AC_SUBST(CONFIGURE_SPECS)
798 ACX_PKGVERSION([GCC])
799 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
801 # Sanity check enable_languages in case someone does not run the toplevel
802 # configure # script.
803 AC_ARG_ENABLE(languages,
804 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
805 [case ,${enable_languages}, in
807 # go safe -- we cannot be much sure without the toplevel
809 # analysis of which target libs are present and usable
813 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
818 enable_languages=c,${enable_languages}
821 [enable_languages=c])
823 AC_ARG_WITH(multilib-list,
824 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
826 with_multilib_list=default)
828 # -------------------------
829 # Checks for other programs
830 # -------------------------
834 # Find some useful tools
836 # We need awk to create options.c and options.h.
837 # Bail out if it's missing.
839 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
847 # By default, the Darwin ranlib will not treat common symbols as
848 # definitions when building the archive table of contents. Other
849 # ranlibs do that; pass an option to the Darwin ranlib that makes
850 # it behave similarly.
856 AC_SUBST(ranlib_flags)
860 # See if cmp has --ignore-initial.
861 gcc_AC_PROG_CMP_IGNORE_INITIAL
863 # See if we have the mktemp command.
864 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
866 # See if makeinfo has been installed and is modern enough
867 # that we can use it.
868 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
869 [GNU texinfo.* \([0-9][0-9.]*\)],
870 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
871 if test $gcc_cv_prog_makeinfo_modern = no; then
873 *** Makeinfo is missing or too old.
874 *** Info documentation will not be built.])
881 # Is pod2man recent enough to regenerate manpages?
882 AC_MSG_CHECKING([for recent Pod::Man])
883 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
885 GENERATED_MANPAGES=generated-manpages
890 AC_SUBST(GENERATED_MANPAGES)
892 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
895 dnl Don't use AC_PROG_LEX; we insist on flex.
896 dnl LEXLIB is not useful in gcc.
897 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
900 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
902 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
903 # check for build == host before using them.
906 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
907 && test -d ../binutils ; then
908 NM='${objdir}/../binutils/nm-new'
910 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
914 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
915 && test -d ../binutils ; then
916 AR='${objdir}/../binutils/ar'
918 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
922 # --------------------
923 # Checks for C headers
924 # --------------------
926 # Need to reject headers which give warnings, so that the -Werror bootstrap
927 # works later. *sigh* This needs to come before all header checks.
934 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
935 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
936 sys/resource.h sys/param.h sys/times.h sys/stat.h \
937 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
939 # Check for thread headers.
940 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
941 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
943 # These tests can't be done till we know if we have limits.h.
947 # ----------------------
948 # Checks for C++ headers
949 # ----------------------
951 dnl Autoconf will give an error in the configure script if there is no
952 dnl C++ preprocessor. Hack to prevent that.
953 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
955 m4_popdef([AC_MSG_ERROR])[]dnl
959 AC_CHECK_HEADERS(unordered_map)
960 AC_CHECK_HEADERS(tr1/unordered_map)
961 AC_CHECK_HEADERS(ext/hash_map)
970 # These libraries may be used by collect2.
971 # We may need a special search path to get them linked.
972 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
974 for libs in '' -lld -lmld \
975 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
976 '-L/usr/lib/cmplrs/cc3.11 -lmld'
979 AC_TRY_LINK_FUNC(ldopen,
980 [gcc_cv_collect2_libs="$libs"; break])
983 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
984 case $gcc_cv_collect2_libs in
986 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
988 AC_SUBST(COLLECT2_LIBS)
990 # When building Ada code on Alpha, we need exc_resume which is usually in
991 # -lexc. So test for it.
994 AC_SEARCH_LIBS(exc_resume, exc)
997 AC_SUBST(GNAT_LIBEXC)
999 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1002 AC_SEARCH_LIBS(kstat_open, kstat)
1003 EXTRA_GCC_LIBS="$LIBS"
1005 AC_SUBST(EXTRA_GCC_LIBS)
1007 # Some systems put ldexp and frexp in libm instead of libc; assume
1008 # they're both in the same place. jcf-dump needs them.
1011 AC_SEARCH_LIBS(ldexp, m)
1016 # Use <inttypes.h> only if it exists,
1017 # doesn't clash with <sys/types.h>, and declares intmax_t.
1018 AC_MSG_CHECKING(for inttypes.h)
1019 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1020 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1021 [[#include <sys/types.h>
1022 #include <inttypes.h>]],
1023 [[intmax_t i = -1;]])],
1024 [gcc_cv_header_inttypes_h=yes],
1025 [gcc_cv_header_inttypes_h=no])])
1026 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1027 if test $gcc_cv_header_inttypes_h = yes; then
1028 AC_DEFINE(HAVE_INTTYPES_H, 1,
1029 [Define if you have a working <inttypes.h> header file.])
1032 dnl Disabled until we have a complete test for buggy enum bitfields.
1033 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1035 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1036 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1037 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1038 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1039 putchar_unlocked putc_unlocked)
1040 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1041 sysconf strsignal getrusage nl_langinfo \
1042 gettimeofday mbstowcs wcswidth mmap setlocale \
1043 gcc_UNLOCKED_FUNCS madvise)
1045 if test x$ac_cv_func_mbstowcs = xyes; then
1046 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1047 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1053 [gcc_cv_func_mbstowcs_works=yes],
1054 [gcc_cv_func_mbstowcs_works=no],
1055 [gcc_cv_func_mbstowcs_works=yes])])
1056 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1057 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1058 [Define this macro if mbstowcs does not crash when its
1059 first argument is NULL.])
1063 AC_CHECK_TYPE(ssize_t, int)
1064 AC_CHECK_TYPE(caddr_t, char *)
1066 gcc_AC_FUNC_MMAP_BLACKLIST
1070 # Under VMS, vfork works very differently than on Unix. The standard test
1071 # won't work, and it isn't easily adaptable. It makes more sense to
1073 ac_cv_func_vfork_works=yes
1078 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1079 # iconv() prototype.
1080 AS_IF([test "$ENABLE_BUILD_WITH_CXX" = "yes"],
1081 [AC_LANG_PUSH([C++])
1083 AC_LANG_POP([C++])],
1086 # Until we have in-tree GNU iconv:
1088 AC_SUBST(LIBICONV_DEP)
1094 # We will need to find libiberty.h and ansidecl.h
1095 saved_CFLAGS="$CFLAGS"
1096 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1097 saved_CXXFLAGS="$CXXFLAGS"
1098 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include"
1099 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1100 strsignal strstr strverscmp \
1101 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1102 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1103 #include "ansidecl.h"
1104 #include "system.h"])
1106 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1107 #include "ansidecl.h"
1109 #ifdef HAVE_SYS_RESOURCE_H
1110 #include <sys/resource.h>
1114 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1115 #include "ansidecl.h"
1117 #ifdef HAVE_SYS_RESOURCE_H
1118 #include <sys/resource.h>
1120 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1121 [Define to `long' if <sys/resource.h> doesn't define.])])
1123 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1124 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1125 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1126 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1127 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1128 #include "ansidecl.h"
1137 gcc_AC_CHECK_DECLS(times, , ,[
1138 #include "ansidecl.h"
1140 #ifdef HAVE_SYS_TIMES_H
1141 #include <sys/times.h>
1145 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1146 #include "ansidecl.h"
1151 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1153 AS_IF([test "$ENABLE_BUILD_WITH_CXX" = "yes"],
1154 [AC_LANG_PUSH([C++])
1155 gcc_AC_CHECK_DECLS(madvise, , ,[
1156 #include "ansidecl.h"
1159 AC_LANG_POP([C++])],
1160 [gcc_AC_CHECK_DECLS(madvise, , ,[
1161 #include "ansidecl.h"
1166 # More time-related stuff.
1167 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1168 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1169 #include "ansidecl.h"
1171 #ifdef HAVE_SYS_TIMES_H
1172 #include <sys/times.h>
1174 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1175 if test $ac_cv_struct_tms = yes; then
1176 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1177 [Define if <sys/times.h> defines struct tms.])
1180 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1181 # revisit after autoconf 2.50.
1182 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1183 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1184 #include "ansidecl.h"
1186 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1187 if test $gcc_cv_type_clock_t = yes; then
1188 AC_DEFINE(HAVE_CLOCK_T, 1,
1189 [Define if <time.h> defines clock_t.])
1192 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1193 CFLAGS="$saved_CFLAGS"
1194 CXXFLAGS="$saved_CXXFLAGS"
1196 gcc_AC_INITFINI_ARRAY
1198 # mkdir takes a single argument on some systems.
1199 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1207 # With Setjmp/Longjmp based exception handling.
1208 AC_ARG_ENABLE(sjlj-exceptions,
1209 [AS_HELP_STRING([--enable-sjlj-exceptions],
1210 [arrange to use setjmp/longjmp exception handling])],
1213 if test $enableval != yes; then
1214 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1219 force_sjlj_exceptions=yes],
1222 force_sjlj_exceptions=yes
1226 force_sjlj_exceptions=no
1229 if test $force_sjlj_exceptions = yes; then
1230 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1231 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1232 [Define 0/1 to force the choice for exception handling model.])
1235 # --------------------------------------------------------
1236 # Build, host, and target specific configuration fragments
1237 # --------------------------------------------------------
1239 # Collect build-machine-specific information.
1240 . ${srcdir}/config.build
1242 # Collect host-machine-specific information.
1243 . ${srcdir}/config.host
1247 # Collect target-machine-specific information.
1248 . ${srcdir}/config.gcc
1250 extra_objs="${host_extra_objs} ${extra_objs}"
1251 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1253 # Default the target-machine variables that were not explicitly set.
1254 if test x"$tm_file" = x
1255 then tm_file=$cpu_type/$cpu_type.h; fi
1257 if test x"$extra_headers" = x
1258 then extra_headers=; fi
1260 if test x$md_file = x
1261 then md_file=$cpu_type/$cpu_type.md; fi
1263 if test x$out_file = x
1264 then out_file=$cpu_type/$cpu_type.c; fi
1266 if test x"$tmake_file" = x
1267 then tmake_file=$cpu_type/t-$cpu_type
1270 if test x"$dwarf2" = xyes
1271 then tm_file="$tm_file tm-dwarf2.h"
1274 # Say what files are being used for the output code and MD file.
1275 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1276 echo "Using \`$srcdir/config/$md_file' as machine description file."
1278 # If any of the xm_file variables contain nonexistent files, warn
1279 # about them and drop them.
1282 for x in $build_xm_file; do
1283 if test -f $srcdir/config/$x
1285 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1291 for x in $host_xm_file; do
1292 if test -f $srcdir/config/$x
1294 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1300 for x in $xm_file; do
1301 if test -f $srcdir/config/$x
1303 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1309 for f in $tm_file; do
1312 if test $count = ax; then
1313 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1315 echo "Using the following target machine macro files:"
1316 for f in $tm_file; do
1317 echo " $srcdir/config/$f"
1321 if test x$need_64bit_hwint = xyes; then
1322 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1323 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1326 if test x$use_long_long_for_widest_fast_int = xyes; then
1327 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1328 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1329 efficiently supported by the host hardware.])
1333 for f in $host_xm_file; do
1336 if test $count = a; then
1338 elif test $count = ax; then
1339 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1341 echo "Using the following host machine macro files:"
1342 for f in $host_xm_file; do
1343 echo " $srcdir/config/$f"
1346 echo "Using ${out_host_hook_obj} for host machine hooks."
1348 if test "$host_xm_file" != "$build_xm_file"; then
1350 for f in $build_xm_file; do
1353 if test $count = a; then
1355 elif test $count = ax; then
1356 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1358 echo "Using the following build machine macro files:"
1359 for f in $build_xm_file; do
1360 echo " $srcdir/config/$f"
1365 if test -n "$configured_native_system_header_dir"; then
1366 native_system_header_dir=$configured_native_system_header_dir
1368 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1369 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1373 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1374 gcc_cv_mcontext_underscores,
1376 #include <sys/cdefs.h>
1377 #include <sys/signal.h>
1378 #include <ucontext.h>
1379 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1381 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1382 if test $gcc_cv_mcontext_underscores = yes; then
1383 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1384 [mcontext_t fields start with __])
1393 # Check if a valid thread package
1394 case ${enable_threads} in
1397 target_thread_file='single'
1401 target_thread_file='single'
1403 aix | dce | lynx | mipssde | posix | rtems | \
1404 single | tpf | vxworks | win32)
1405 target_thread_file=${enable_threads}
1408 echo "${enable_threads} is an unknown thread package" 1>&2
1413 if test x${thread_file} = x; then
1414 # No thread file set by target-specific clauses in config.gcc,
1415 # so use file chosen by default logic above
1416 thread_file=${target_thread_file}
1419 # Make gthr-default.h if we have a thread file.
1421 if test $thread_file != single; then
1422 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1423 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1424 rm -f gthr-default.h-t
1426 mv -f gthr-default.h-t gthr-default.h
1428 gthread_flags=-DHAVE_GTHR_DEFAULT
1430 AC_SUBST(gthread_flags)
1437 if test x$enable___cxa_atexit = xyes || \
1438 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1439 if test x$host = x$target; then
1441 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1442 # keyed to flag_use_cxa_atexit
1447 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1448 [echo "__cxa_atexit can't be enabled on this target"])
1452 # We can't check for __cxa_atexit when building a cross, so assume
1456 if test x$use_cxa_atexit = xyes; then
1457 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1458 [Define if you want to use __cxa_atexit, rather than atexit, to
1459 register C++ destructors for local statics and global objects.
1460 This is essential for fully standards-compliant handling of
1461 destructors, but requires __cxa_atexit in libc.])
1465 # Look for a file containing extra machine modes.
1466 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1467 extra_modes_file='$(srcdir)'/config/${extra_modes}
1468 AC_SUBST(extra_modes_file)
1469 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1470 [Define to the name of a file containing a list of extra machine modes
1471 for this architecture.])
1474 # Convert extra_options into a form suitable for Makefile use.
1477 for f in $extra_options; do
1478 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1479 all_opt_files="$all_opt_files $srcdir/config/$f"
1481 AC_SUBST(extra_opt_files)
1483 # auto-host.h is the file containing items generated by autoconf and is
1484 # the first file included by config.h.
1485 # If host=build, it is correct to have bconfig include auto-host.h
1486 # as well. If host!=build, we are in error and need to do more
1487 # work to find out the build config parameters.
1488 if test x$host = x$build
1490 build_auto=auto-host.h
1492 # We create a subdir, then run autoconf in the subdir.
1493 # To prevent recursion we set host and build for the new
1494 # invocation of configure to the build for this invocation
1501 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1502 *) realsrcdir=../${srcdir};;
1504 saved_CFLAGS="${CFLAGS}"
1505 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1506 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1507 ${realsrcdir}/configure \
1508 --enable-languages=${enable_languages-all} \
1509 --target=$target_alias --host=$build_alias --build=$build_alias
1510 CFLAGS="${saved_CFLAGS}"
1512 # We just finished tests for the build machine, so rename
1513 # the file auto-build.h in the gcc directory.
1514 mv auto-host.h ../auto-build.h
1517 build_auto=auto-build.h
1519 AC_SUBST(build_subdir)
1521 tm_file="${tm_file} defaults.h"
1522 tm_p_file="${tm_p_file} tm-preds.h"
1523 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1524 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1525 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1526 # put this back in temporarily.
1527 xm_file="auto-host.h ansidecl.h ${xm_file}"
1534 # Compile in configure arguments.
1535 if test -f configargs.h ; then
1536 # Being re-configured.
1537 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1538 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1540 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1543 # Double all backslashes and backslash all quotes to turn
1544 # gcc_config_arguments into a C string.
1545 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1546 $gcc_config_arguments
1548 gcc_config_arguments_str=`cat conftest.out`
1551 cat > configargs.h <<EOF
1552 /* Generated automatically. */
1553 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1554 static const char thread_model[] = "$thread_file";
1556 static const struct {
1557 const char *name, *value;
1558 } configure_default_options[] = $configure_default_options;
1563 gcc_BASEVER=`cat $srcdir/BASE-VER`
1564 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1565 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1566 if test -f $srcdir/REVISION ; then
1567 gcc_REVISION=`cat $srcdir/REVISION`
1571 cat > plugin-version.h <<EOF
1572 #include "configargs.h"
1574 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1575 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1576 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1577 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1579 static char basever[] = "$gcc_BASEVER";
1580 static char datestamp[] = "$gcc_DATESTAMP";
1581 static char devphase[] = "$gcc_DEVPHASE";
1582 static char revision[] = "$gcc_REVISION";
1584 /* FIXME plugins: We should make the version information more precise.
1585 One way to do is to add a checksum. */
1587 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1589 configuration_arguments};
1593 # Internationalization
1594 ZW_GNU_GETTEXT_SISTER_DIR
1596 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1597 # -liconv on the link line twice.
1598 case "$LIBINTL" in *$LIBICONV*)
1602 AC_ARG_ENABLE(secureplt,
1603 [AS_HELP_STRING([--enable-secureplt],
1604 [enable -msecure-plt by default for PowerPC])],
1607 AC_ARG_ENABLE(leading-mingw64-underscores,
1608 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1609 [enable leading underscores on 64 bit mingw targets]),
1611 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1612 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1613 [Define if we should use leading underscore on 64 bit mingw targets])])
1616 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1619 AC_ARG_ENABLE(frame-pointer,
1620 [AS_HELP_STRING([--enable-frame-pointer],
1621 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1624 linux* | darwin[[8912]]*)
1625 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1627 enable_frame_pointer=no
1630 enable_frame_pointer=yes
1635 # Windows32 Registry support for specifying GCC installation paths.
1636 AC_ARG_ENABLE(win32-registry,
1637 [AS_HELP_STRING([--disable-win32-registry],
1638 [disable lookup of installation paths in the
1639 Registry on Windows hosts])
1640 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1641 AS_HELP_STRING([--enable-win32-registry=KEY],
1642 [use KEY instead of GCC version as the last portion
1643 of the registry key])],,)
1646 win32 | pe | cygwin* | mingw32* | uwin*)
1647 if test "x$enable_win32_registry" != xno; then
1648 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1651 if test "x$enable_win32_registry" != xno; then
1652 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1653 [Define to 1 if installation paths should be looked up in the Windows
1654 Registry. Ignored on non-Windows hosts.])
1656 if test "x$enable_win32_registry" != xyes \
1657 && test "x$enable_win32_registry" != x; then
1658 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1659 [Define to be the last component of the Windows registry key under which
1660 to look for installation paths. The full key used will be
1661 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1662 The default is the GCC version number.])
1668 # Get an absolute path to the GCC top-level source directory
1669 holddir=`${PWDCMD-pwd}`
1671 topdir=`${PWDCMD-pwd}`
1674 # Conditionalize the makefile for this host machine.
1676 for f in ${host_xmake_file}
1678 if test -f ${srcdir}/config/$f
1680 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1684 # Conditionalize the makefile for this target machine.
1686 for f in ${tmake_file}
1688 if test -f ${srcdir}/config/$f
1690 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1693 tmake_file="${tmake_file_}"
1695 out_object_file=`basename $out_file .c`.o
1696 common_out_object_file=`basename $common_out_file .c`.o
1698 tm_file_list="options.h"
1699 tm_include_list="options.h insn-constants.h"
1700 for f in $tm_file; do
1703 f=`echo $f | sed 's/^..//'`
1704 tm_file_list="${tm_file_list} $f"
1705 tm_include_list="${tm_include_list} $f"
1708 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1709 tm_include_list="${tm_include_list} $f"
1712 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1713 tm_include_list="${tm_include_list} config/$f"
1718 libgcc_tm_file_list=
1719 libgcc_tm_include_list=
1720 for f in $libgcc_tm_file; do
1721 libgcc_tm_file_list="${libgcc_tm_file_list} \$(srcdir)/../libgcc/config/$f"
1722 libgcc_tm_include_list="${libgcc_tm_include_list} ../libgcc/config/$f"
1727 for f in $tm_p_file; do
1730 tm_p_file_list="${tm_p_file_list} $f"
1731 tm_p_include_list="${tm_p_include_list} $f"
1734 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1735 tm_p_include_list="${tm_p_include_list} config/$f"
1741 for f in $xm_file; do
1744 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1745 xm_include_list="${xm_include_list} $f"
1748 xm_file_list="${xm_file_list} $f"
1749 xm_include_list="${xm_include_list} $f"
1752 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1753 xm_include_list="${xm_include_list} config/$f"
1759 host_xm_include_list=
1760 for f in $host_xm_file; do
1763 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1764 host_xm_include_list="${host_xm_include_list} $f"
1767 host_xm_file_list="${host_xm_file_list} $f"
1768 host_xm_include_list="${host_xm_include_list} $f"
1771 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1772 host_xm_include_list="${host_xm_include_list} config/$f"
1778 for f in $build_xm_file; do
1781 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1782 build_xm_include_list="${build_xm_include_list} $f"
1784 auto-build.h | auto-host.h )
1785 build_xm_file_list="${build_xm_file_list} $f"
1786 build_xm_include_list="${build_xm_include_list} $f"
1789 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1790 build_xm_include_list="${build_xm_include_list} config/$f"
1795 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1796 # cross-compiler which does not use the native headers and libraries.
1797 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1798 CROSS= AC_SUBST(CROSS)
1799 ALL=all.internal AC_SUBST(ALL)
1800 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1802 if test "x$with_build_sysroot" != x; then
1803 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1805 # This value is used, even on a native system, because
1806 # CROSS_SYSTEM_HEADER_DIR is just
1807 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1808 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1811 if test x$host != x$target
1813 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1815 SYSTEM_HEADER_DIR=$build_system_header_dir
1816 case "$host","$target" in
1817 # Darwin crosses can use the host system's libraries and headers,
1818 # because of the fat library support. Of course, it must be the
1819 # same version of Darwin on both sides. Allow the user to
1820 # just say --target=foo-darwin without a version number to mean
1821 # "the version on this system".
1822 *-*-darwin*,*-*-darwin*)
1823 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1824 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1825 if test $hostos = $targetos -o $targetos = darwin ; then
1827 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1832 i?86-*-*,x86_64-*-* \
1833 | powerpc*-*-*,powerpc64*-*-*)
1834 CROSS="$CROSS -DNATIVE_CROSS" ;;
1839 if test "x$with_headers" = x; then
1846 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1847 SYSTEM_HEADER_DIR=$build_system_header_dir
1850 # If this is a cross-compiler that does not
1851 # have its own set of headers then define
1854 # If this is using newlib, without having the headers available now,
1855 # then define inhibit_libc in LIBGCC2_CFLAGS.
1856 # This prevents libgcc2 from containing any code which requires libc
1858 : ${inhibit_libc=false}
1859 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1860 test x$with_newlib = xyes ; } &&
1861 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1864 AC_SUBST(inhibit_libc)
1866 # When building gcc with a cross-compiler, we need to adjust things so
1867 # that the generator programs are still built with the native compiler.
1868 # Also, we cannot run fixincludes.
1870 # These are the normal (build=host) settings:
1871 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1872 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1873 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1874 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1876 # And these apply if build != host, or we are generating coverage data
1877 if test x$build != x$host || test "x$coverage_flags" != x
1879 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1880 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1883 # Expand extra_headers to include complete path.
1884 # This substitutes for lots of t-* files.
1886 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1887 for file in ${extra_headers} ; do
1888 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1891 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1892 if test x"$use_gcc_tgmath" = xyes
1893 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1896 # Define collect2 in Makefile.
1897 case $host_can_use_collect2 in
1899 *) collect2='collect2$(exeext)' ;;
1901 AC_SUBST([collect2])
1903 # Add a definition of USE_COLLECT2 if system wants one.
1904 case $use_collect2 in
1905 no) use_collect2= ;;
1908 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1909 xm_defines="${xm_defines} USE_COLLECT2"
1910 case $host_can_use_collect2 in
1912 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1918 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1919 [Define to the name of the LTO plugin DSO that must be
1920 passed to the linker's -plugin=LIB option.])
1922 # ---------------------------
1923 # Assembler & linker features
1924 # ---------------------------
1926 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1927 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1928 # However when ld-new is first executed from the build tree, libtool will
1929 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1930 # to the build tree. While doing this we need to use the previous-stage
1931 # linker, or we have an infinite loop. The presence of a shell script as
1932 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1933 # the gcc/collect-ld script. So we need to know how libtool works, or
1934 # exec-tool will fail.
1936 m4_defun([_LT_CONFIG_COMMANDS], [])
1939 AC_SUBST(enable_fast_install)
1941 # Identify the assembler which will work hand-in-glove with the newly
1942 # built GCC, so that we can examine its features. This is the assembler
1943 # which will be driven by the driver program.
1945 # If build != host, and we aren't building gas in-tree, we identify a
1946 # build->target assembler and hope that it will have the same features
1947 # as the host->target assembler we'll be using.
1948 gcc_cv_gas_major_version=
1949 gcc_cv_gas_minor_version=
1950 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1952 m4_pattern_allow([AS_FOR_TARGET])dnl
1953 AS_VAR_SET_IF(gcc_cv_as,, [
1954 if test -x "$DEFAULT_ASSEMBLER"; then
1955 gcc_cv_as="$DEFAULT_ASSEMBLER"
1956 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1957 && test -f ../gas/Makefile \
1958 && test x$build = x$host; then
1959 gcc_cv_as=../gas/as-new$build_exeext
1960 elif test -x as$build_exeext; then
1961 # Build using assembler in the current directory.
1962 gcc_cv_as=./as$build_exeext
1963 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1964 gcc_cv_as="$AS_FOR_TARGET"
1966 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1969 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1970 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1971 case "$ORIGINAL_AS_FOR_TARGET" in
1972 ./as | ./as$build_exeext) ;;
1973 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1976 AC_MSG_CHECKING(what assembler to use)
1977 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1978 # Single tree build which includes gas. We want to prefer it
1979 # over whatever linker top-level may have detected, since
1980 # we'll use what we're building after installation anyway.
1981 AC_MSG_RESULT(newly built gas)
1983 _gcc_COMPUTE_GAS_VERSION
1984 in_tree_gas_is_elf=no
1985 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1986 || (grep 'obj_format = multi' ../gas/Makefile \
1987 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1989 in_tree_gas_is_elf=yes
1992 AC_MSG_RESULT($gcc_cv_as)
1996 # Identify the linker which will work hand-in-glove with the newly
1997 # built GCC, so that we can examine its features. This is the linker
1998 # which will be driven by the driver program.
2000 # If build != host, and we aren't building gas in-tree, we identify a
2001 # build->target linker and hope that it will have the same features
2002 # as the host->target linker we'll be using.
2003 gcc_cv_gld_major_version=
2004 gcc_cv_gld_minor_version=
2005 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2006 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2008 AS_VAR_SET_IF(gcc_cv_ld,, [
2009 if test -x "$DEFAULT_LINKER"; then
2010 gcc_cv_ld="$DEFAULT_LINKER"
2011 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2012 && test -f ../ld/Makefile \
2013 && test x$build = x$host; then
2014 gcc_cv_ld=../ld/ld-new$build_exeext
2015 elif test -x collect-ld$build_exeext; then
2016 # Build using linker in the current directory.
2017 gcc_cv_ld=./collect-ld$build_exeext
2018 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2019 gcc_cv_ld="$LD_FOR_TARGET"
2021 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2024 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2025 PLUGIN_LD=`basename $gcc_cv_ld`
2026 AC_ARG_WITH(plugin-ld,
2027 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2028 [if test x"$withval" != x; then
2029 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2030 PLUGIN_LD="$withval"
2032 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2033 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
2035 # Check to see if we are using gold instead of ld
2036 AC_MSG_CHECKING(whether we are using gold)
2038 if test x$gcc_cv_ld != x; then
2039 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2040 | grep "GNU gold" > /dev/null; then
2044 AC_MSG_RESULT($ld_is_gold)
2046 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2047 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2048 case "$ORIGINAL_LD_FOR_TARGET" in
2049 ./collect-ld | ./collect-ld$build_exeext) ;;
2050 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2053 AC_MSG_CHECKING(what linker to use)
2054 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2055 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2056 # Single tree build which includes ld. We want to prefer it
2057 # over whatever linker top-level may have detected, since
2058 # we'll use what we're building after installation anyway.
2059 AC_MSG_RESULT(newly built ld)
2061 in_tree_ld_is_elf=no
2062 if (grep 'EMUL = .*elf' ../ld/Makefile \
2063 || grep 'EMUL = .*linux' ../ld/Makefile \
2064 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2065 in_tree_ld_is_elf=yes
2066 elif test "$ld_is_gold" = yes; then
2067 in_tree_ld_is_elf=yes
2069 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
2072 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
2073 if test x$gcc_cv_gld_version != x; then
2077 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2078 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2081 AC_MSG_RESULT($gcc_cv_ld)
2085 # Figure out what nm we will be using.
2086 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2087 AS_VAR_SET_IF(gcc_cv_nm,, [
2088 if test -f $gcc_cv_binutils_srcdir/configure.in \
2089 && test -f ../binutils/Makefile \
2090 && test x$build = x$host; then
2091 gcc_cv_nm=../binutils/nm-new$build_exeext
2092 elif test -x nm$build_exeext; then
2093 gcc_cv_nm=./nm$build_exeext
2094 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2095 gcc_cv_nm="$NM_FOR_TARGET"
2097 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2100 AC_MSG_CHECKING(what nm to use)
2101 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2102 # Single tree build which includes binutils.
2103 AC_MSG_RESULT(newly built nm)
2106 AC_MSG_RESULT($gcc_cv_nm)
2110 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2111 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2112 case "$ORIGINAL_NM_FOR_TARGET" in
2113 ./nm | ./nm$build_exeext) ;;
2114 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2118 # Figure out what objdump we will be using.
2119 AS_VAR_SET_IF(gcc_cv_objdump,, [
2120 if test -f $gcc_cv_binutils_srcdir/configure.in \
2121 && test -f ../binutils/Makefile \
2122 && test x$build = x$host; then
2123 # Single tree build which includes binutils.
2124 gcc_cv_objdump=../binutils/objdump$build_exeext
2125 elif test -x objdump$build_exeext; then
2126 gcc_cv_objdump=./objdump$build_exeext
2127 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2128 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2130 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2133 AC_MSG_CHECKING(what objdump to use)
2134 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2135 # Single tree build which includes binutils.
2136 AC_MSG_RESULT(newly built objdump)
2137 elif test x$gcc_cv_objdump = x; then
2138 AC_MSG_RESULT(not found)
2140 AC_MSG_RESULT($gcc_cv_objdump)
2143 # Figure out what readelf we will be using.
2144 AS_VAR_SET_IF(gcc_cv_readelf,, [
2145 if test -f $gcc_cv_binutils_srcdir/configure.in \
2146 && test -f ../binutils/Makefile \
2147 && test x$build = x$host; then
2148 # Single tree build which includes binutils.
2149 gcc_cv_readelf=../binutils/readelf$build_exeext
2150 elif test -x readelf$build_exeext; then
2151 gcc_cv_readelf=./readelf$build_exeext
2153 AC_PATH_PROG(gcc_cv_readelf, readelf)
2156 AC_MSG_CHECKING(what readelf to use)
2157 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2158 # Single tree build which includes binutils.
2159 AC_MSG_RESULT(newly built readelf)
2160 elif test x$gcc_cv_readelf = x; then
2161 AC_MSG_RESULT(not found)
2163 AC_MSG_RESULT($gcc_cv_readelf)
2166 # Figure out what assembler alignment features are present.
2167 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2171 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2172 [Define if your assembler supports .balign and .p2align.])])
2174 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2177 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2178 [Define if your assembler supports specifying the maximum number
2179 of bytes to skip when using the GAS .p2align command.])])
2181 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2184 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2185 [Define if your assembler supports .literal16.])])
2187 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2189 [conftest_label1: .word 0
2191 conftest_label2: .word 0
2193 [if test x$gcc_cv_nm != x; then
2194 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2195 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2196 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2198 else gcc_cv_as_subsection_m1=yes
2200 rm -f conftest.nm1 conftest.nm2
2202 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2203 [Define if your assembler supports .subsection and .subsection -1 starts
2204 emitting at the beginning of your section.])])
2206 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2209 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2211 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2213 [ .weakref foobar, barfnot],,
2214 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2216 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2219 .NSUBSPA $CODE$,COMDAT],,
2220 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2222 # .hidden needs to be supported in both the assembler and the linker,
2223 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2224 # This is irritatingly difficult to feature test for; we have to check the
2225 # date string after the version number. If we've got an in-tree
2226 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2228 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2229 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2233 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2234 # STV_HIDDEN, so disable .hidden support if so.
2236 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2237 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2238 cat > conftest.s <<EOF
2245 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2246 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2247 grep '\.hidden default' > /dev/null; then
2250 gcc_cv_as_hidden=yes
2253 # Assume bug is present if objdump is missing.
2258 gcc_cv_as_hidden=yes
2263 # Darwin as has some visibility support, though with a different syntax.
2264 gcc_cv_as_hidden=yes
2268 # gnu_indirect_function type is an extension proposed at
2269 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2270 # selection of function implementation
2271 AC_ARG_ENABLE(gnu-indirect-function,
2272 [AS_HELP_STRING([--enable-gnu-indirect-function],
2273 [enable the use of the @gnu_indirect_function to glibc systems])],
2274 [case $enable_gnu_indirect_function in
2276 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2277 Valid choices are 'yes' and 'no'.]) ;;
2279 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2280 if test x$enable_gnu_indirect_function = xyes; then
2281 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2282 [Define if your system supports gnu indirect functions.])
2286 if test $in_tree_ld != yes ; then
2287 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2288 if echo "$ld_ver" | grep GNU > /dev/null; then
2289 if test x"$ld_is_gold" = xyes; then
2290 # GNU gold --version looks like this:
2292 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2294 # We extract the binutils version which is more familiar and specific
2295 # than the gold version.
2296 ld_vers=`echo $ld_ver | sed -n \
2297 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2299 # GNU ld --version looks like this:
2301 # GNU ld (GNU Binutils) 2.21.51.20110225
2302 ld_vers=`echo $ld_ver | sed -n \
2303 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2305 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2306 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2307 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2308 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2313 # Solaris 2 ld -V output looks like this for a regular version:
2315 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2317 # but test versions add stuff at the end:
2319 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2321 ld_ver=`$gcc_cv_ld -V 2>&1`
2322 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2323 ld_vers=`echo $ld_ver | sed -n \
2324 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2325 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2326 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2334 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2335 [[if test $in_tree_ld = yes ; then
2337 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2338 && test $in_tree_ld_is_elf = yes; then
2339 gcc_cv_ld_hidden=yes
2342 gcc_cv_ld_hidden=yes
2343 if test x"$ld_is_gold" = xyes; then
2345 elif echo "$ld_ver" | grep GNU > /dev/null; then
2346 if test 0"$ld_date" -lt 20020404; then
2347 if test -n "$ld_date"; then
2348 # If there was date string, but was earlier than 2002-04-04, fail
2350 elif test -z "$ld_vers"; then
2351 # If there was no date string nor ld version number, something is wrong
2354 test -z "$ld_vers_patch" && ld_vers_patch=0
2355 if test "$ld_vers_major" -lt 2; then
2357 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2358 gcc_cv_ld_hidden="no"
2359 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2367 # Darwin ld has some visibility support.
2368 gcc_cv_ld_hidden=yes
2370 hppa64*-*-hpux* | ia64*-*-hpux*)
2371 gcc_cv_ld_hidden=yes
2374 # .hidden support was backported to Solaris 8, starting with ld
2376 if test "$ld_vers_minor" -ge 276; then
2377 gcc_cv_ld_hidden=yes
2382 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2383 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2384 # .symbolic was only added in Solaris 9 12/02.
2385 gcc_cv_ld_hidden=yes
2393 libgcc_visibility=no
2394 AC_SUBST(libgcc_visibility)
2395 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2396 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2397 libgcc_visibility=yes
2398 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2399 [Define if your assembler and linker support .hidden.])
2402 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2403 gcc_cv_ld_ro_rw_mix=unknown
2404 if test $in_tree_ld = yes ; then
2405 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2406 && test $in_tree_ld_is_elf = yes; then
2407 gcc_cv_ld_ro_rw_mix=read-write
2409 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2410 echo '.section myfoosect, "a"' > conftest1.s
2411 echo '.section myfoosect, "aw"' > conftest2.s
2412 echo '.byte 1' >> conftest2.s
2413 echo '.section myfoosect, "a"' > conftest3.s
2414 echo '.byte 0' >> conftest3.s
2415 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2416 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2417 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2418 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2419 conftest2.o conftest3.o > /dev/null 2>&1; then
2420 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2421 | sed -e '/myfoosect/!d' -e N`
2422 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2423 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2424 gcc_cv_ld_ro_rw_mix=read-only
2426 gcc_cv_ld_ro_rw_mix=read-write
2431 rm -f conftest.* conftest[123].*
2434 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2435 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2436 [Define if your linker links a mix of read-only
2437 and read-write sections into a read-write section.])
2439 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2441 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2442 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2450 [[# GAS versions before 2.11 do not support uleb128,
2451 # despite appearing to.
2452 # ??? There exists an elf-specific test that will crash
2453 # the assembler. Perhaps it's better to figure out whether
2454 # arbitrary sections are supported and try the test.
2455 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2456 if echo "$as_ver" | grep GNU > /dev/null; then
2457 as_vers=`echo $as_ver | sed -n \
2458 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2459 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2460 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2461 if test $as_major -eq 2 && test $as_minor -lt 11
2463 else gcc_cv_as_leb128=yes
2466 [AC_DEFINE(HAVE_AS_LEB128, 1,
2467 [Define if your assembler supports .sleb128 and .uleb128.])])
2469 # Check if we have assembler support for unwind directives.
2470 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2477 .cfi_escape 1, 2, 3, 4, 5
2481 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2482 # read-only and read-write sections, we need to make sure that the
2483 # assembler used emits read-write .eh_frame sections.
2484 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2485 if test "x$gcc_cv_objdump" != x; then
2486 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2487 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2488 gcc_cv_as_cfi_directive=no
2491 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2492 # On Solaris/x86, make sure that GCC and gas agree on using
2493 # read-only .eh_frame sections for 64-bit.
2494 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2495 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2496 sed -e /.eh_frame/!d -e N | \
2497 grep READONLY > /dev/null; then
2498 gcc_cv_as_cfi_directive=yes
2500 gcc_cv_as_cfi_directive=no
2504 gcc_cv_as_cfi_directive=yes
2509 # no objdump, err on the side of caution
2510 gcc_cv_as_cfi_directive=no
2513 gcc_cv_as_cfi_directive=yes
2517 gcc_cv_as_cfi_directive=yes
2520 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2521 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2525 .cfi_adjust_cfa_offset 64
2527 .cfi_adjust_cfa_offset 128
2530 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2531 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2532 gcc_cv_as_cfi_advance_working=yes
2536 # no objdump, err on the side of caution
2537 gcc_cv_as_cfi_advance_working=no
2539 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2540 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2541 [`if test $gcc_cv_as_cfi_directive = yes \
2542 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2543 [Define 0/1 if your assembler supports CFI directives.])
2545 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2546 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2547 gcc_cv_as_cfi_personality_directive, ,,
2550 .cfi_personality 0, symbol
2552 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2553 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2554 then echo 1; else echo 0; fi`],
2555 [Define 0/1 if your assembler supports .cfi_personality.])
2557 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2558 gcc_cv_as_cfi_sections_directive, ,,
2560 .cfi_sections .debug_frame, .eh_frame
2564 win32 | pe | cygwin* | mingw32* | uwin*)
2565 # Need to check that we generated the correct relocation for the
2566 # .debug_frame section. This was fixed for binutils 2.21.
2567 gcc_cv_as_cfi_sections_directive=no
2568 if test "x$gcc_cv_objdump" != x; then
2569 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2570 grep secrel > /dev/null; then
2571 gcc_cv_as_cfi_sections_directive=yes
2576 gcc_cv_as_cfi_sections_directive=yes
2579 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2580 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2581 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2582 then echo 1; else echo 0; fi`],
2583 [Define 0/1 if your assembler supports .cfi_sections.])
2585 # GAS versions up to and including 2.11.0 may mis-optimize
2587 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2595 .section .eh_frame,"aw",@progbits
2597 .4byte .LECIE1-.LSCIE1
2611 .4byte .LEFDE1-.LASFDE1
2613 .4byte .LASFDE1-__FRAME_BEGIN__
2621 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2622 cat > conftest.lit <<EOF
2623 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2624 0010 01000000 12000000 18000000 00000000 ................
2625 0020 08000000 04080000 0044 .........D @&t@
2627 cat > conftest.big <<EOF
2628 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2629 0010 00000001 00000012 00000018 00000000 ................
2630 0020 00000008 04000000 0844 .........D @&t@
2632 # If the assembler didn't choke, and we can objdump,
2633 # and we got the correct data, then succeed.
2634 # The text in the here-document typically retains its unix-style line
2635 # endings, while the output of objdump will use host line endings.
2636 # Therefore, use diff -b for the comparisons.
2637 if test x$gcc_cv_objdump != x \
2638 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2639 | tail -3 > conftest.got \
2640 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2641 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2643 gcc_cv_as_eh_frame=yes
2644 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2645 gcc_cv_as_eh_frame=buggy
2647 # Uh oh, what do we do now?
2648 gcc_cv_as_eh_frame=no
2651 if test $gcc_cv_as_eh_frame = buggy; then
2652 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2653 [Define if your assembler mis-optimizes .eh_frame data.])
2656 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2657 [elf,2,12,0], [--fatal-warnings],
2658 [.section .rodata.str, "aMS", @progbits, 1])
2659 if test $gcc_cv_as_shf_merge = no; then
2660 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2661 [elf,2,12,0], [--fatal-warnings],
2662 [.section .rodata.str, "aMS", %progbits, 1])
2664 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2665 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2666 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2668 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2669 gcc_cv_as_comdat_group,
2670 [elf,2,16,0], [--fatal-warnings],
2671 [.section .text,"axG",@progbits,.foo,comdat])
2672 if test $gcc_cv_as_comdat_group = yes; then
2673 gcc_cv_as_comdat_group_percent=no
2674 gcc_cv_as_comdat_group_group=no
2676 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2677 gcc_cv_as_comdat_group_percent,
2678 [elf,2,16,0], [--fatal-warnings],
2679 [.section .text,"axG",%progbits,.foo,comdat])
2680 if test $gcc_cv_as_comdat_group_percent = yes; then
2681 gcc_cv_as_comdat_group_group=no
2684 # Sun as uses a completely different syntax.
2689 .group foo,".text%foo",#comdat
2690 .section ".text%foo", #alloc,#execinstr,#progbits
2695 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2697 .group foo,.text%foo,#comdat
2698 .section .text%foo, "ax", @progbits
2704 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2705 gcc_cv_as_comdat_group_group,
2711 if test x"$ld_is_gold" = xyes; then
2713 elif test $in_tree_ld = yes ; then
2715 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2716 && test $in_tree_ld_is_elf = yes; then
2719 elif echo "$ld_ver" | grep GNU > /dev/null; then
2721 if test 0"$ld_date" -lt 20050308; then
2722 if test -n "$ld_date"; then
2723 # If there was date string, but was earlier than 2005-03-08, fail
2725 elif test "$ld_vers_major" -lt 2; then
2727 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2734 *-*-solaris2.1[1-9]*)
2736 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2737 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2740 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2741 # least ld version 1.2267.
2742 if test "$ld_vers_major" -gt 1; then
2744 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2746 elif test "$ld_vers_minor" -ge 2267; then
2751 # Assume linkers other than GNU ld don't support COMDAT group.
2757 # Allow overriding the automatic COMDAT group tests above.
2758 AC_ARG_ENABLE(comdat,
2759 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2760 [comdat_group="$enable_comdat"])
2761 if test $comdat_group = no; then
2762 gcc_cv_as_comdat_group=no
2763 gcc_cv_as_comdat_group_percent=no
2764 gcc_cv_as_comdat_group_group=no
2766 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2767 [`if test $gcc_cv_as_comdat_group = yes \
2768 || test $gcc_cv_as_comdat_group_percent = yes \
2769 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2770 [Define 0/1 if your assembler and linker support COMDAT groups.])
2772 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2773 gcc_cv_as_discriminator,
2777 .loc 1 1 0 discriminator 1],,
2778 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2779 [Define if your assembler supports the .loc discriminator sub-directive.])])
2781 # Thread-local storage - the check is heavily parameterized.
2790 .section ".tdata","awT",@progbits
2793 ldq $27,__tls_get_addr($29) !literal!1
2794 lda $16,foo($29) !tlsgd!1
2795 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2796 ldq $27,__tls_get_addr($29) !literal!2
2797 lda $16,foo($29) !tlsldm!2
2798 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2799 ldq $1,foo($29) !gotdtprel
2800 ldah $2,foo($29) !dtprelhi
2801 lda $3,foo($2) !dtprello
2802 lda $4,foo($29) !dtprel
2803 ldq $1,foo($29) !gottprel
2804 ldah $2,foo($29) !tprelhi
2805 lda $3,foo($2) !tprello
2806 lda $4,foo($29) !tprel'
2809 tls_as_opt=--fatal-warnings
2811 cris-*-*|crisv32-*-*)
2813 .section ".tdata","awT",@progbits
2820 tls_as_opt=--fatal-warnings
2824 .section ".tdata","awT",@progbits
2836 .section ".tdata","awT",@progbits
2840 addil LT%foo-$tls_gdidx$,gp
2841 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2844 addil LT%foo-$tls_ldidx$,gp
2846 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2847 addil LR%foo-$tls_dtpoff$,%ret0
2848 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2850 addil LT%foo-$tls_ieoff$,gp
2851 ldw RT%foo-$tls_ieoff$(%r1),%t2
2854 addil LR%foo-$tls_leoff$,%t1
2855 ldo RR%foo-$tls_leoff$(%r1),%t2'
2858 tls_as_opt=--fatal-warnings
2862 .section ".tdata","awT",%progbits
2873 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2875 i[34567]86-*-solaris2.*)
2877 tga_func=___tls_get_addr
2879 x86_64-*-solaris2.1[0-9]*)
2881 tga_func=__tls_get_addr
2887 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2889 .section .tdata,"awt",@progbits'
2893 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2894 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2898 .section ".tdata","awT",@progbits'
2901 tls_as_opt="--fatal-warnings"
2903 conftest_s="$conftest_s
2907 leal foo@tlsgd(,%ebx,1), %eax
2908 leal foo@tlsldm(%ebx), %eax
2909 leal foo@dtpoff(%eax), %edx
2910 movl foo@gottpoff(%ebx), %eax
2911 subl foo@gottpoff(%ebx), %eax
2912 addl foo@gotntpoff(%ebx), %eax
2913 movl foo@indntpoff, %eax
2914 movl \$foo@tpoff, %eax
2915 subl \$foo@tpoff, %eax
2916 leal foo@ntpoff(%ecx), %eax"
2920 .section ".tdata","awT",@progbits
2924 leaq foo@TLSGD(%rip), %rdi
2925 leaq foo@TLSLD(%rip), %rdi
2926 leaq foo@DTPOFF(%rax), %rdx
2927 movq foo@GOTTPOFF(%rip), %rax
2928 movq $foo@TPOFF, %rax'
2931 tls_as_opt=--fatal-warnings
2935 .section ".tdata","awT",@progbits
2938 addl r16 = @ltoff(@dtpmod(foo#)), gp
2939 addl r17 = @ltoff(@dtprel(foo#)), gp
2940 addl r18 = @ltoff(@tprel(foo#)), gp
2941 addl r19 = @dtprel(foo#), gp
2942 adds r21 = @dtprel(foo#), r13
2943 movl r23 = @dtprel(foo#)
2944 addl r20 = @tprel(foo#), gp
2945 adds r22 = @tprel(foo#), r13
2946 movl r24 = @tprel(foo#)'
2949 tls_as_opt=--fatal-warnings
2953 .section .tdata,"awT",@progbits
2957 addiu $4, $28, %tlsgd(x)
2958 addiu $4, $28, %tlsldm(x)
2959 lui $4, %dtprel_hi(x)
2960 addiu $4, $4, %dtprel_lo(x)
2961 lw $4, %gottprel(x)($28)
2962 lui $4, %tprel_hi(x)
2963 addiu $4, $4, %tprel_lo(x)'
2966 tls_as_opt='-32 --fatal-warnings'
2970 .section .tdata,"awT",@progbits
2975 move.l x@TLSGD(%a5),%a0
2976 move.l x@TLSLDM(%a5),%a0
2977 move.l x@TLSLDO(%a5),%a0
2978 move.l x@TLSIE(%a5),%a0
2979 move.l x@TLSLE(%a5),%a0'
2982 tls_as_opt='--fatal-warnings'
2986 .section ".tdata","awT",@progbits
2994 addi 3,31,ld0@got@tlsgd
2996 addi 3,31,x1@got@tlsld
2999 addis 9,3,x2@dtprel@ha
3000 addi 9,9,x2@dtprel@l
3001 lwz 9,x3@got@tprel(31)
3004 addis 9,2,x2@tprel@ha
3005 addi 9,9,x2@tprel@l'
3008 tls_as_opt="-a32 --fatal-warnings"
3012 .section ".tdata","awT",@progbits
3020 addi 3,2,ld0@got@tlsgd
3026 addi 3,2,x1@got@tlsld
3032 addis 9,3,x2@dtprel@ha
3033 addi 9,9,x2@dtprel@l
3036 ld 9,x3@got@dtprel(2)
3042 tls_as_opt="-a64 --fatal-warnings"
3046 .section ".tdata","awT",@progbits
3055 l %r1,foo@GOTNTPOFF(%r12)
3056 l %r1,0(%r1):tls_load:foo
3057 bas %r14,0(%r1,%r13):tls_gdcall:foo
3058 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3061 tls_as_opt="-m31 --fatal-warnings"
3065 .section ".tdata","awT",@progbits
3073 lg %r1,foo@GOTNTPOFF(%r12)
3074 larl %r1,foo@INDNTPOFF
3075 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3076 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3079 tls_as_opt="-m64 -Aesame --fatal-warnings"
3081 sh-*-* | sh[34]-*-*)
3083 .section ".tdata","awT",@progbits
3093 tls_as_opt=--fatal-warnings
3097 sparc*-sun-solaris2.*)
3099 tga_func=__tls_get_addr
3105 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3107 .section ".tdata",#alloc,#write,#tls'
3112 .section ".tdata","awT",@progbits'
3115 tls_as_opt="-32 --fatal-warnings"
3117 conftest_s="$conftest_s
3120 sethi %tgd_hi22(foo), %o0
3121 add %o0, %tgd_lo10(foo), %o1
3122 add %l7, %o1, %o0, %tgd_add(foo)
3123 call __tls_get_addr, %tgd_call(foo)
3124 sethi %tldm_hi22(foo), %l1
3125 add %l1, %tldm_lo10(foo), %l2
3126 add %l7, %l2, %o0, %tldm_add(foo)
3127 call __tls_get_addr, %tldm_call(foo)
3128 sethi %tldo_hix22(foo), %l3
3129 xor %l3, %tldo_lox10(foo), %l4
3130 add %o0, %l4, %l5, %tldo_add(foo)
3131 sethi %tie_hi22(foo), %o3
3132 add %o3, %tie_lo10(foo), %o3
3133 ld [%l7 + %o3], %o2, %tie_ld(foo)
3134 add %g7, %o2, %o4, %tie_add(foo)
3135 sethi %tle_hix22(foo), %l1
3136 xor %l1, %tle_lox10(foo), %o5
3137 ld [%g7 + %o5], %o1"
3141 .section ".tdata","awT",@progbits
3144 movi a8, foo@TLSFUNC
3145 movi a10, foo@TLSARG
3146 callx8.tls a8, foo@TLSCALL'
3153 if test "x$enable_tls" = xno ; then
3154 : # TLS explicitly disabled.
3155 elif test "x$enable_tls" = xyes ; then
3156 set_have_as_tls=yes # TLS explicitly enabled.
3157 elif test -z "$tls_first_major"; then
3158 : # If we don't have a check, assume no support.
3160 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3161 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3162 [set_have_as_tls=yes])
3166 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3167 # with TLS support are in use, native TLS cannot work.
3171 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3172 # gld with TLS support are in use, native TLS cannot work.
3175 # TLS was introduced in the Solaris 9 FCS release and backported to
3176 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3177 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3178 # ld and GCC don't support any longer.
3180 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3182 # Check ld and ld.so.1 TLS support.
3183 if echo "$ld_ver" | grep GNU > /dev/null; then
3184 # Assume all interesting versions of GNU ld have TLS support.
3185 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3189 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3191 min_tls_ld_vers_minor=280
3193 # Solaris 8/SPARC ld has TLS support since version 1.272.
3194 sparc*-*-solaris2.8)
3195 min_tls_ld_vers_minor=272
3197 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3199 min_tls_ld_vers_minor=374
3201 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3202 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3203 min_tls_ld_vers_minor=343
3206 if test "$ld_vers_major" -gt 1 || \
3207 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3213 AC_MSG_RESULT($ld_tls_support)
3216 save_LDFLAGS="$LDFLAGS"
3220 AC_MSG_CHECKING(alternate thread library)
3222 # TLS support was backported to Solaris 8 patches, but only lives in
3223 # the alternate thread library which became the default in Solaris 9.
3224 # We want to always use that, irrespective of TLS support.
3226 # Take multilib subdir into account. There's no spec to handle
3227 # this. The 64 symlink exists since Solaris 8.
3228 lwp_dir=/usr/lib/lwp
3229 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3230 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3237 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3238 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3239 [Define to the linker flags to use for -pthread.])
3240 AC_MSG_RESULT($lwp_dir)
3242 AC_MSG_CHECKING(library containing $tga_func)
3243 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3244 # (32-bit x86) only lived in libthread, so check for that. Keep
3245 # set_have_as_tls if found, disable if not.
3246 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3247 # Clear LIBS if we cannot support TLS.
3248 if test $set_have_as_tls = no; then
3251 # Always define LIB_TLS_SPEC, even without TLS support.
3252 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3253 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3254 AC_MSG_RESULT($LIBS)
3257 LDFLAGS="$save_LDFLAGS"
3260 if test $set_have_as_tls = yes ; then
3261 AC_DEFINE(HAVE_AS_TLS, 1,
3262 [Define if your assembler and linker support thread-local storage.])
3265 # Target-specific assembler checks.
3267 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3268 gcc_cv_ld_static_dynamic=no
3269 gcc_cv_ld_static_option='-Bstatic'
3270 gcc_cv_ld_dynamic_option='-Bdynamic'
3271 if test $in_tree_ld = yes ; then
3272 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3273 gcc_cv_ld_static_dynamic=yes
3275 elif test x$gcc_cv_ld != x; then
3276 # Check if linker supports -Bstatic/-Bdynamic option
3277 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3278 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3279 gcc_cv_ld_static_dynamic=yes
3282 # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic.
3284 gcc_cv_ld_static_dynamic=yes
3285 gcc_cv_ld_static_option="-noso"
3286 gcc_cv_ld_dynamic_option="-so_archive"
3288 # HP-UX ld uses -a flags to select between shared and archive.
3290 if test x"$gnu_ld" = xno; then
3291 gcc_cv_ld_static_dynamic=yes
3292 gcc_cv_ld_static_option="-aarchive_shared"
3293 gcc_cv_ld_dynamic_option="-adefault"
3296 # IRIX 6 ld supports -Bstatic/-Bdynamic.
3298 gcc_cv_ld_static_dynamic=yes
3300 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3302 gcc_cv_ld_static_dynamic=yes
3307 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3308 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3309 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3310 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3311 [Define to the linker option to disable use of shared objects.])
3312 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3313 [Define to the linker option to enable use of shared objects.])
3315 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3317 if test x"$demangler_in_ld" = xyes; then
3318 AC_MSG_CHECKING(linker --demangle support)
3319 gcc_cv_ld_demangle=no
3320 if test $in_tree_ld = yes; then
3321 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3322 gcc_cv_ld_demangle=yes
3324 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3325 # Check if the GNU linker supports --demangle option
3326 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3327 gcc_cv_ld_demangle=yes
3330 if test x"$gcc_cv_ld_demangle" = xyes; then
3331 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3332 [Define if your linker supports --demangle option.])
3334 AC_MSG_RESULT($gcc_cv_ld_demangle)
3337 AC_MSG_CHECKING(linker plugin support)
3339 if test -f liblto_plugin.la; then
3340 save_ld_ver="$ld_ver"
3341 save_ld_vers_major="$ld_vers_major"
3342 save_ld_vers_minor="$ld_vers_minor"
3343 save_ld_is_gold="$ld_is_gold"
3347 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3349 # FIXME: ld_is_gold?
3350 ld_vers_major="$gcc_cv_gld_major_version"
3351 ld_vers_minor="$gcc_cv_gld_minor_version"
3353 # Determine plugin linker version.
3354 # FIXME: Partial duplicate from above, generalize.
3356 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3357 if echo "$ld_ver" | grep GNU > /dev/null; then
3358 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3360 ld_vers=`echo $ld_ver | sed -n \
3361 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3363 ld_vers=`echo $ld_ver | sed -n \
3364 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3366 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3367 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3372 # Determine plugin support.
3373 if echo "$ld_ver" | grep GNU > /dev/null; then
3374 # Require GNU ld or gold 2.21+ for plugin support by default.
3375 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3377 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3378 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3383 ld_ver="$save_ld_ver"
3384 ld_vers_major="$save_ld_vers_major"
3385 ld_vers_minor="$save_ld_vers_minor"
3386 ld_is_gold="$save_ld_is_gold"
3388 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3389 [Define to the level of your linker's plugin support.])
3390 AC_MSG_RESULT($gcc_cv_lto_plugin)
3393 # All TARGET_ABI_OSF targets.
3394 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3395 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3396 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3399 extbl $3, $2, $3 !lituse_bytoff!1
3400 ldq $2, a($29) !literal!1
3401 ldq $4, b($29) !literal!2
3402 ldq_u $3, 0($2) !lituse_base!1
3403 ldq $27, f($29) !literal!5
3404 jsr $26, ($27), f !lituse_jsr!5
3405 ldah $29, 0($26) !gpdisp!3
3406 lda $0, c($29) !gprel
3407 ldah $1, d($29) !gprelhigh
3408 lda $1, d($1) !gprellow
3409 lda $29, 0($29) !gpdisp!3],,
3410 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3411 [Define if your assembler supports explicit relocations.])])
3412 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3413 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3416 ldq $27, a($29) !literal!1
3417 jsr $26, ($27), a !lituse_jsrdirect!1],,
3418 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3419 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3423 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3424 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3425 [-no-mul-bug-abort], [.text],,
3426 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3427 [Define if your assembler supports the -no-mul-bug-abort option.])])
3431 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3432 [.register %g2, #scratch],,
3433 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3434 [Define if your assembler supports .register.])])
3436 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3438 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3439 [Define if your assembler supports -relax option.])])
3441 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3442 gcc_cv_as_sparc_gotdata_op,,
3449 sethi %gdop_hix22(foo), %g1
3450 xor %g1, %gdop_lox10(foo), %g1
3451 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3452 [if test x$gcc_cv_ld != x \
3453 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3454 if test x$gcc_cv_objdump != x; then
3455 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3456 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3457 gcc_cv_as_sparc_gotdata_op=no
3459 gcc_cv_as_sparc_gotdata_op=yes
3464 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3465 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3467 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3468 gcc_cv_as_sparc_ua_pcrel,,
3476 .uaword %r_disp32(foo)],
3477 [if test x$gcc_cv_ld != x \
3478 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3479 gcc_cv_as_sparc_ua_pcrel=yes
3482 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3483 [Define if your assembler and linker support unaligned PC relative relocs.])
3485 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3486 gcc_cv_as_sparc_ua_pcrel_hidden,,
3491 .uaword %r_disp32(foo)
3492 .byte 0x32, 0x33, 0x34
3497 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3498 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3499 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3500 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3501 if $gcc_cv_objdump -R conftest 2> /dev/null \
3502 | grep 'DISP32' > /dev/null 2>&1; then
3505 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3509 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3510 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3511 ]) # unaligned pcrel relocs
3513 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3514 gcc_cv_as_sparc_offsetable_lo10,,
3517 or %g1, %lo(ab) + 12, %g1
3518 or %g1, %lo(ab + 12), %g1],
3519 [if test x$gcc_cv_objdump != x \
3520 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3521 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3522 gcc_cv_as_sparc_offsetable_lo10=yes
3524 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3525 [Define if your assembler supports offsetable %lo().])])
3527 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3528 gcc_cv_as_sparc_fmaf,,
3531 .register %g2, #scratch
3532 .register %g3, #scratch
3534 fmaddd %f0, %f2, %f4, %f6
3535 addxccc %g1, %g2, %g3
3536 fsrl32 %f2, %f4, %f8
3537 fnaddd %f10, %f12, %f14],,
3538 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3539 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3543 i[34567]86-*-* | x86_64-*-*)
3547 # Full C++ conformance when using a shared libstdc++-v3 requires some
3548 # support from the Cygwin DLL, which in more recent versions exports
3549 # wrappers to aid in interposing and redirecting operators new, delete,
3550 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3551 # are configuring for a version of Cygwin that exports the wrappers.
3552 if test x$host = x$target; then
3553 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3555 # Can't check presence of libc functions during cross-compile, so
3556 # we just have to assume we're building for an up-to-date target.
3557 gcc_ac_cygwin_dll_wrappers=yes
3559 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3560 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3561 [Define if you want to generate code by default that assumes that the
3562 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3565 cygwin* | pe | mingw32*)
3566 # Recent binutils allows the three-operand form of ".comm" on PE. This
3567 # definition is used unconditionally to initialise the default state of
3568 # the target option variable that governs usage of the feature.
3569 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3570 [2,19,52],,[.comm foo,1,32])
3571 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3572 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3573 [Define if your assembler supports specifying the alignment
3574 of objects allocated using the GAS .comm command.])
3575 # Used for DWARF 2 in PE
3576 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3577 gcc_cv_as_ix86_pe_secrel32,
3583 [if test x$gcc_cv_ld != x \
3584 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3585 gcc_cv_as_ix86_pe_secrel32=yes
3588 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3589 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3590 # Test if the assembler supports the extended form of the .section
3591 # directive that specifies section alignment. LTO support uses this,
3592 # but normally only after installation, so we warn but don't fail the
3593 # configure if LTO is enabled but the assembler does not support it.
3594 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3595 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3596 if test x$gcc_cv_as_section_has_align != xyes; then
3597 case ",$enable_languages," in
3599 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3603 # Test if the assembler supports the section flag 'e' for specifying
3604 # an excluded section.
3605 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3609 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3610 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3611 [Define if your assembler supports specifying the section flag e.])
3615 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3616 gcc_cv_as_ix86_filds,,,
3617 [filds mem; fists mem],,
3618 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3619 [Define if your assembler uses filds and fists mnemonics.])])
3621 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3622 gcc_cv_as_ix86_fildq,,,
3623 [fildq mem; fistpq mem],,
3624 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3625 [Define if your assembler uses fildq and fistq mnemonics.])])
3627 gcc_GAS_CHECK_FEATURE([cmov syntax],
3628 gcc_cv_as_ix86_cmov_sun_syntax,,,
3629 [cmovl.l %edx, %eax],,
3630 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3631 [Define if your assembler supports the Sun syntax for cmov.])])
3633 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3634 gcc_cv_as_ix86_ffreep,,,
3636 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3637 [Define if your assembler supports the ffreep mnemonic.])])
3639 gcc_GAS_CHECK_FEATURE([.quad directive],
3640 gcc_cv_as_ix86_quad,,,
3642 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3643 [Define if your assembler supports the .quad directive.])])
3645 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3646 gcc_cv_as_ix86_sahf,,,
3649 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3650 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3652 gcc_GAS_CHECK_FEATURE([swap suffix],
3653 gcc_cv_as_ix86_swap,,,
3654 [movl.s %esp, %ebp],,
3655 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3656 [Define if your assembler supports the swap suffix.])])
3658 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3659 gcc_cv_as_ix86_diff_sect_delta,,,
3667 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3668 [Define if your assembler supports the subtraction of symbols in different sections.])])
3670 # These two are used unconditionally by i386.[ch]; it is to be defined
3671 # to 1 if the feature is present, 0 otherwise.
3672 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3673 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3679 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3680 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3681 [Define true if the assembler supports '.long foo@GOTOFF'.])
3683 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3684 gcc_cv_as_ix86_rep_lock_prefix,,,
3686 lock addl %edi, (%eax,%esi)
3687 lock orl $0, (%esp)],,
3688 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3689 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3691 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3692 gcc_cv_as_ix86_tlsgdplt,,,
3693 [call tls_gd@tlsgdplt],,
3694 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3695 [Define if your assembler supports @tlsgdplt.])])
3697 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3698 gcc_cv_as_ix86_tlsldmplt,,,
3699 [call tls_ld@tlsldmplt],,
3700 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3701 [Define if your assembler supports @tlsldmplt.])])
3706 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3707 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3709 addl r15 = @ltoffx(x#), gp
3711 ld8.mov r16 = [[r15]], x#],,
3712 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3713 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3719 *-*-aix*) conftest_s=' .machine "pwr5"
3723 gcc_GAS_CHECK_FEATURE([.machine directive support],
3724 gcc_cv_as_machine_directive,,,
3725 [ .machine ppc7400])
3726 if test x$gcc_cv_as_machine_directive != xyes; then
3727 echo "*** This target requires an assembler supporting \".machine\"" >&2
3728 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3729 test x$build = x$target && exit 1
3733 *) conftest_s=' .machine power4
3738 gcc_GAS_CHECK_FEATURE([mfcr field support],
3739 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3741 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3742 [Define if your assembler supports mfcr field.])])
3745 *-*-aix*) conftest_s=' .machine "pwr5"
3748 *) conftest_s=' .machine power5
3753 gcc_GAS_CHECK_FEATURE([popcntb support],
3754 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3756 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3757 [Define if your assembler supports popcntb field.])])
3760 *-*-aix*) conftest_s=' .machine "pwr5x"
3763 *) conftest_s=' .machine power5
3768 gcc_GAS_CHECK_FEATURE([fp round support],
3769 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3771 [AC_DEFINE(HAVE_AS_FPRND, 1,
3772 [Define if your assembler supports fprnd.])])
3775 *-*-aix*) conftest_s=' .machine "pwr6"
3778 *) conftest_s=' .machine power6
3783 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3784 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3786 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3787 [Define if your assembler supports mffgpr and mftgpr.])])
3790 *-*-aix*) conftest_s=' .csect .text[[PR]]
3792 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3796 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3797 *) conftest_s=' .text
3799 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3802 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3803 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3805 [AC_DEFINE(HAVE_AS_REL16, 1,
3806 [Define if your assembler supports R_PPC_REL16 relocs.])])
3809 *-*-aix*) conftest_s=' .machine "pwr6"
3812 *) conftest_s=' .machine power6
3817 gcc_GAS_CHECK_FEATURE([compare bytes support],
3818 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3820 [AC_DEFINE(HAVE_AS_CMPB, 1,
3821 [Define if your assembler supports cmpb.])])
3824 *-*-aix*) conftest_s=' .machine "pwr6"
3827 *) conftest_s=' .machine power6
3832 gcc_GAS_CHECK_FEATURE([decimal float support],
3833 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3835 [AC_DEFINE(HAVE_AS_DFP, 1,
3836 [Define if your assembler supports DFP instructions.])])
3839 *-*-aix*) conftest_s=' .machine "pwr7"
3842 *) conftest_s=' .machine power7
3847 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3848 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3850 [AC_DEFINE(HAVE_AS_VSX, 1,
3851 [Define if your assembler supports VSX instructions.])])
3854 *-*-aix*) conftest_s=' .machine "pwr7"
3857 *) conftest_s=' .machine power7
3862 gcc_GAS_CHECK_FEATURE([popcntd support],
3863 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3865 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3866 [Define if your assembler supports POPCNTD instructions.])])
3869 *-*-aix*) conftest_s=' .csect .text[[PR]]
3871 *) conftest_s=' .text
3875 gcc_GAS_CHECK_FEATURE([lwsync support],
3876 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3878 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3879 [Define if your assembler supports LWSYNC instructions.])])
3882 *-*-aix*) conftest_s=' .machine "476"
3885 *) conftest_s=' .machine "476"
3890 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3891 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3893 [AC_DEFINE(HAVE_AS_DCI, 1,
3894 [Define if your assembler supports the DCI/ICI instructions.])])
3896 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3897 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3898 [.gnu_attribute 4,1],,
3899 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3900 [Define if your assembler supports .gnu_attribute.])])
3902 gcc_GAS_CHECK_FEATURE([tls marker support],
3903 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3904 [ bl __tls_get_addr(x@tlsgd)],,
3905 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3906 [Define if your assembler supports arg info for __tls_get_addr.])])
3910 gcc_GAS_CHECK_FEATURE([.ref support],
3911 gcc_cv_as_aix_ref, [2.21.0],,
3912 [ .csect stuff[[rw]]
3918 [AC_DEFINE(HAVE_AS_REF, 1,
3919 [Define if your assembler supports .ref])])
3925 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3926 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3927 [ lw $4,%gp_rel(foo)($4)],,
3928 [if test x$target_cpu_default = x
3929 then target_cpu_default=MASK_EXPLICIT_RELOCS
3930 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3932 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3933 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3934 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3935 [Define if the assembler understands -mno-shared.])])
3937 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3938 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3939 [.gnu_attribute 4,1],,
3940 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3941 [Define if your assembler supports .gnu_attribute.])])
3943 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3944 gcc_cv_as_mips_dtprelword, [2,18,0],,
3945 [.section .tdata,"awT",@progbits
3949 .dtprelword x+0x8000],,
3950 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3951 [Define if your assembler supports .dtprelword.])])
3953 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3954 gcc_cv_as_mips_dspr1_mult,,,
3964 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3965 [Define if your assembler supports DSPR1 mult.])])
3967 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3968 gcc_cv_as_ld_jalr_reloc=no
3969 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3970 if test $in_tree_ld = yes ; then
3971 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3972 && test $in_tree_ld_is_elf = yes; then
3973 gcc_cv_as_ld_jalr_reloc=yes
3975 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3976 echo ' .ent x' > conftest.s
3977 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3978 echo ' ld $25,%call16(y)($28)' >> conftest.s
3979 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3980 echo '1: jalr $25' >> conftest.s
3981 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3982 echo '1: jalr $25' >> conftest.s
3983 echo ' .end x' >> conftest.s
3984 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3985 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3986 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3987 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3988 gcc_cv_as_ld_jalr_reloc=yes
3994 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3995 if test x$target_cpu_default = x; then
3996 target_cpu_default=MASK_RELAX_PIC_CALLS
3998 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4001 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4003 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4004 [gcc_cv_ld_mips_personality_relaxation],
4005 [gcc_cv_ld_mips_personality_relaxation=no
4006 if test $in_tree_ld = yes ; then
4007 if test "$gcc_cv_gld_major_version" -eq 2 \
4008 -a "$gcc_cv_gld_minor_version" -ge 21 \
4009 -o "$gcc_cv_gld_major_version" -gt 2; then
4010 gcc_cv_ld_mips_personality_relaxation=yes
4012 elif test x$gcc_cv_as != x \
4013 -a x$gcc_cv_ld != x \
4014 -a x$gcc_cv_readelf != x ; then
4015 cat > conftest.s <<EOF
4017 .cfi_personality 0x80,indirect_ptr
4024 .section .data,"aw",@progbits
4028 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4029 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4030 if $gcc_cv_readelf -d conftest 2>&1 \
4031 | grep TEXTREL > /dev/null 2>&1; then
4033 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4034 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4037 gcc_cv_ld_mips_personality_relaxation=yes
4041 rm -f conftest.s conftest.o conftest])
4042 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4043 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4044 [Define if your linker can relax absolute .eh_frame personality
4045 pointers into PC-relative form.])
4050 # Mips and HP-UX need the GNU assembler.
4051 # Linux on IA64 might be able to use the Intel assembler.
4054 mips*-*-* | *-*-hpux* )
4055 if test x$gas_flag = xyes \
4056 || test x"$host" != x"$build" \
4057 || test ! -x "$gcc_cv_as" \
4058 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4061 echo "*** This configuration requires the GNU assembler" >&2
4067 # ??? Not all targets support dwarf2 debug_line, even within a version
4068 # of gas. Moreover, we need to emit a valid instruction to trigger any
4069 # info to the output file. So, as supported targets are added to gas 2.11,
4070 # add some instruction here to (also) show we expect this might work.
4071 # ??? Once 2.11 is released, probably need to add first known working
4072 # version to the per-target configury.
4074 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4075 | pa | rs6000 | score | sparc | spu | xstormy16 | xtensa)
4085 if test x"$insn" != x; then
4087 .file 1 \"conftest.s\"
4090 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4091 gcc_cv_as_dwarf2_debug_line,
4092 [elf,2,11,0],, [$conftest_s],
4093 [if test x$gcc_cv_objdump != x \
4094 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4095 | grep debug_line > /dev/null 2>&1; then
4096 gcc_cv_as_dwarf2_debug_line=yes
4099 # The .debug_line file table must be in the exact order that
4100 # we specified the files, since these indices are also used
4101 # by DW_AT_decl_file. Approximate this test by testing if
4102 # the assembler bitches if the same index is assigned twice.
4103 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4104 gcc_cv_as_dwarf2_file_buggy,,,
4108 if test $gcc_cv_as_dwarf2_debug_line = yes \
4109 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4110 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4111 [Define if your assembler supports dwarf2 .file/.loc directives,
4112 and preserves file table indices exactly as given.])
4115 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4116 gcc_cv_as_gdwarf2_flag,
4117 [elf,2,11,0], [--gdwarf2], [$insn],,
4118 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4119 [Define if your assembler supports the --gdwarf2 option.])])
4121 gcc_GAS_CHECK_FEATURE([--gstabs option],
4122 gcc_cv_as_gstabs_flag,
4123 [elf,2,11,0], [--gstabs], [$insn],
4124 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4125 # and warns about it, but still exits successfully. So check for
4127 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4129 else gcc_cv_as_gstabs_flag=yes
4131 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4132 [Define if your assembler supports the --gstabs option.])])
4134 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4135 gcc_cv_as_debug_prefix_map_flag,
4136 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4137 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4138 [Define if your assembler supports the --debug-prefix-map option.])])
4141 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4144 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4145 [Define if your assembler supports .lcomm with an alignment field.])])
4147 AC_ARG_ENABLE(gnu-unique-object,
4148 [AS_HELP_STRING([--enable-gnu-unique-object],
4149 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4150 [case $enable_gnu_unique_object in
4152 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4153 Valid choices are 'yes' and 'no'.]) ;;
4155 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4157 [.type foo, @gnu_unique_object],,
4158 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4159 [[if test x$host = x$build -a x$host = x$target &&
4160 ldd --version 2>/dev/null &&
4161 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4162 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4163 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4164 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4165 if test "$glibcnum" -ge 2011 ; then
4166 enable_gnu_unique_object=yes
4169 if test x$enable_gnu_unique_object = xyes; then
4170 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4171 [Define if your assembler supports @gnu_unique_object.])
4174 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4175 [gcc_cv_as_line_zero],
4176 [gcc_cv_as_line_zero=no
4177 if test $in_tree_gas = yes; then
4178 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4179 elif test "x$gcc_cv_as" != x; then
4180 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4181 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4182 test "x`cat conftest.out`" = x
4184 gcc_cv_as_line_zero=yes
4186 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4187 cat conftest.s >&AS_MESSAGE_LOG_FD
4188 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4189 cat conftest.out >&AS_MESSAGE_LOG_FD
4191 rm -f conftest.o conftest.s conftest.out
4193 if test "x$gcc_cv_as_line_zero" = xyes; then
4194 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4195 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4198 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4199 gcc_cv_ld_eh_frame_hdr=no
4200 if test $in_tree_ld = yes ; then
4201 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4202 && test $in_tree_ld_is_elf = yes; then
4203 gcc_cv_ld_eh_frame_hdr=yes
4205 elif test x$gcc_cv_ld != x; then
4206 if echo "$ld_ver" | grep GNU > /dev/null; then
4207 # Check if linker supports --eh-frame-hdr option
4208 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4209 gcc_cv_ld_eh_frame_hdr=yes
4214 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4215 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4216 gcc_cv_ld_eh_frame_hdr=yes
4222 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4223 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4224 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4225 [Define if your linker supports .eh_frame_hdr.])
4227 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4229 AC_MSG_CHECKING(linker position independent executable support)
4231 if test $in_tree_ld = yes ; then
4232 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4233 && test $in_tree_ld_is_elf = yes; then
4236 elif test x$gcc_cv_ld != x; then
4237 # Check if linker supports -pie option
4238 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4242 if test x"$gcc_cv_ld_pie" = xyes; then
4243 AC_DEFINE(HAVE_LD_PIE, 1,
4244 [Define if your linker supports -pie option.])
4246 AC_MSG_RESULT($gcc_cv_ld_pie)
4248 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4249 gcc_cv_ld_eh_gc_sections=no
4250 if test $in_tree_ld = yes ; then
4251 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4252 && test $in_tree_ld_is_elf = yes; then
4253 gcc_cv_ld_eh_gc_sections=yes
4255 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4256 cat > conftest.s <<EOF
4259 .type _start, @function
4262 .size _start, .-_start
4263 .section .text.foo,"ax",@progbits
4264 .type foo, @function
4268 .section .gcc_except_table.foo,"a",@progbits
4271 .section .eh_frame,"a",@progbits
4274 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4275 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4276 | grep "gc-sections option ignored" > /dev/null; then
4277 gcc_cv_ld_eh_gc_sections=no
4278 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4279 | grep gcc_except_table > /dev/null; then
4280 gcc_cv_ld_eh_gc_sections=yes
4281 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4282 if test x$gcc_cv_as_comdat_group != xyes; then
4283 gcc_cv_ld_eh_gc_sections=no
4284 cat > conftest.s <<EOF
4287 .type _start, @function
4290 .size _start, .-_start
4291 .section .gnu.linkonce.t.foo,"ax",@progbits
4292 .type foo, @function
4296 .section .gcc_except_table.foo,"a",@progbits
4299 .section .eh_frame,"a",@progbits
4302 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4303 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4304 | grep "gc-sections option ignored" > /dev/null; then
4305 gcc_cv_ld_eh_gc_sections=no
4306 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4307 | grep gcc_except_table > /dev/null; then
4308 gcc_cv_ld_eh_gc_sections=yes
4314 rm -f conftest.s conftest.o conftest
4318 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4319 gcc_cv_ld_eh_gc_sections=no
4322 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4323 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4324 [Define if your linker supports garbage collection of
4325 sections in presence of EH frames.])
4327 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4329 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4330 gcc_cv_ld_eh_gc_sections_bug=no
4331 if test $in_tree_ld = yes ; then
4332 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4333 && test $in_tree_ld_is_elf = yes; then
4334 gcc_cv_ld_eh_gc_sections_bug=yes
4336 elif test x$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
4337 gcc_cv_ld_eh_gc_sections_bug=yes
4338 cat > conftest.s <<EOF
4341 .type _start, @function
4344 .size _start, .-_start
4345 .section .text.startup.foo,"ax",@progbits
4346 .type foo, @function
4350 .section .gcc_except_table.foo,"a",@progbits
4353 .section .eh_frame,"a",@progbits
4356 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4357 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4358 | grep "gc-sections option ignored" > /dev/null; then
4360 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4361 | grep gcc_except_table > /dev/null; then
4362 gcc_cv_ld_eh_gc_sections_bug=no
4365 rm -f conftest.s conftest.o conftest
4367 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4368 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4369 [Define if your linker has buggy garbage collection of
4370 sections support when .text.startup.foo like sections are used.])
4372 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4378 AC_CACHE_CHECK(linker --as-needed support,
4379 gcc_cv_ld_as_needed,
4380 [gcc_cv_ld_as_needed=no
4381 if test $in_tree_ld = yes ; then
4382 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4383 && test $in_tree_ld_is_elf = yes; then
4384 gcc_cv_ld_as_needed=yes
4386 elif test x$gcc_cv_ld != x; then
4387 # Check if linker supports --as-needed and --no-as-needed options
4388 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4389 gcc_cv_ld_as_needed=yes
4393 if test x"$gcc_cv_ld_as_needed" = xyes; then
4394 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4395 [Define if your linker supports --as-needed and --no-as-needed options.])
4398 case "$target:$tm_file" in
4399 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4400 AC_CACHE_CHECK(linker support for omitting dot symbols,
4401 gcc_cv_ld_no_dot_syms,
4402 [gcc_cv_ld_no_dot_syms=no
4403 if test $in_tree_ld = yes ; then
4404 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4405 gcc_cv_ld_no_dot_syms=yes
4407 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4408 cat > conftest1.s <<EOF
4412 cat > conftest2.s <<EOF
4413 .section ".opd","aw"
4418 .quad .LEfoo,.TOC.@tocbase,0
4424 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4425 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4426 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4427 gcc_cv_ld_no_dot_syms=yes
4429 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4432 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4433 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4434 [Define if your PowerPC64 linker only needs function descriptor syms.])
4437 AC_CACHE_CHECK(linker large toc support,
4438 gcc_cv_ld_large_toc,
4439 [gcc_cv_ld_large_toc=no
4440 if test $in_tree_ld = yes ; then
4441 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4442 gcc_cv_ld_large_toc=yes
4444 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4445 cat > conftest.s <<EOF
4446 .section ".tbss","awT",@nobits
4452 addis 9,13,ie0@got@tprel@ha
4453 ld 9,ie0@got@tprel@l(9)
4455 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4456 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4457 gcc_cv_ld_large_toc=yes
4459 rm -f conftest conftest.o conftest.s
4462 if test x"$gcc_cv_ld_large_toc" = xyes; then
4463 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4464 [Define if your PowerPC64 linker supports a large TOC.])
4469 AC_CACHE_CHECK(linker --build-id support,
4471 [gcc_cv_ld_buildid=no
4472 if test $in_tree_ld = yes ; then
4473 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4474 "$gcc_cv_gld_minor_version" -ge 18 -o \
4475 "$gcc_cv_gld_major_version" -gt 2 \
4476 && test $in_tree_ld_is_elf = yes; then
4477 gcc_cv_ld_buildid=yes
4479 elif test x$gcc_cv_ld != x; then
4480 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4481 gcc_cv_ld_buildid=yes
4484 if test x"$gcc_cv_ld_buildid" = xyes; then
4485 AC_DEFINE(HAVE_LD_BUILDID, 1,
4486 [Define if your linker supports --build-id.])
4489 AC_ARG_ENABLE(linker-build-id,
4490 [AS_HELP_STRING([--enable-linker-build-id],
4491 [compiler will always pass --build-id to linker])],
4493 enable_linker_build_id=no)
4495 if test x"$enable_linker_build_id" = xyes; then
4496 if test x"$gcc_cv_ld_buildid" = xyes; then
4497 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4498 [Define if gcc should always pass --build-id to linker.])
4500 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4504 # In binutils 2.21, GNU ld gained support for new emulations fully
4505 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4506 AC_CACHE_CHECK(linker *_sol2 emulation support,
4507 gcc_cv_ld_sol2_emulation,
4508 [gcc_cv_ld_sol2_emulation=no
4509 if test $in_tree_ld = yes ; then
4510 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4511 "$gcc_cv_gld_minor_version" -ge 21 -o \
4512 "$gcc_cv_gld_major_version" -gt 2 \
4513 && test $in_tree_ld_is_elf = yes; then
4514 gcc_cv_ld_sol2_emulation=yes
4516 elif test x$gcc_cv_ld != x; then
4517 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4518 grep _sol2 > /dev/null; then
4519 gcc_cv_ld_sol2_emulation=yes
4522 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4523 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4524 [Define if your linker supports the *_sol2 emulations.])
4527 AC_CACHE_CHECK(linker --sysroot support,
4529 [gcc_cv_ld_sysroot=no
4530 if test $in_tree_ld = yes ; then
4531 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4532 gcc_cv_ld_sysroot=yes
4534 elif test x$gcc_cv_ld != x; then
4535 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4536 gcc_cv_ld_sysroot=yes
4539 if test x"$gcc_cv_ld_sysroot" = xyes; then
4540 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4541 [Define if your linker supports --sysroot.])
4544 if test x$with_sysroot = x && test x$host = x$target \
4545 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4546 && test "$prefix" != "NONE"; then
4547 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4548 [Define to PREFIX/include if cpp should also search that directory.])
4551 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4552 if test "x$with_headers" != x; then
4553 target_header_dir=$with_headers
4554 elif test "x$with_sysroot" = x; then
4555 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4556 elif test "x$with_build_sysroot" != "x"; then
4557 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4558 elif test "x$with_sysroot" = xyes; then
4559 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4561 target_header_dir="${with_sysroot}${native_system_header_dir}"
4564 target_header_dir=${native_system_header_dir}
4567 # Test for stack protector support in target C library.
4568 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4569 gcc_cv_libc_provides_ssp,
4570 [gcc_cv_libc_provides_ssp=no
4572 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4573 [# glibc 2.4 and later provides __stack_chk_fail and
4574 # either __stack_chk_guard, or TLS access to stack guard canary.
4575 if test -f $target_header_dir/features.h \
4576 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4577 $target_header_dir/features.h > /dev/null; then
4578 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4579 $target_header_dir/features.h > /dev/null; then
4580 gcc_cv_libc_provides_ssp=yes
4581 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4582 $target_header_dir/features.h > /dev/null \
4583 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4584 $target_header_dir/features.h > /dev/null; then
4585 gcc_cv_libc_provides_ssp=yes
4586 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4587 $target_header_dir/features.h > /dev/null && \
4588 test -f $target_header_dir/bits/uClibc_config.h && \
4589 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4590 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4591 gcc_cv_libc_provides_ssp=yes
4596 # Avoid complicated tests (see
4597 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4598 # simply assert that glibc does provide this, which is true for all
4599 # realistically usable GNU/Hurd configurations.
4600 gcc_cv_libc_provides_ssp=yes;;
4601 *-*-darwin* | *-*-freebsd*)
4602 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4603 [echo "no __stack_chk_fail on this target"])
4605 *) gcc_cv_libc_provides_ssp=no ;;
4608 if test x$gcc_cv_libc_provides_ssp = xyes; then
4609 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4610 [Define if your target C library provides stack protector support])
4613 # Test for <sys/sdt.h> on the target.
4614 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4615 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4617 if test -f $target_header_dir/sys/sdt.h; then
4619 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4620 [Define if your target C library provides sys/sdt.h])
4622 AC_MSG_RESULT($have_sys_sdt_h)
4624 # Check if TFmode long double should be used by default or not.
4625 # Some glibc targets used DFmode long double, but with glibc 2.4
4626 # and later they can use TFmode.
4628 powerpc*-*-linux* | \
4632 AC_ARG_WITH(long-double-128,
4633 [AS_HELP_STRING([--with-long-double-128],
4634 [use 128-bit long double by default])],
4635 gcc_cv_target_ldbl128="$with_long_double_128",
4636 [[gcc_cv_target_ldbl128=no
4637 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4638 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4639 && gcc_cv_target_ldbl128=yes
4643 if test x$gcc_cv_target_ldbl128 = xyes; then
4644 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4645 [Define if TFmode long double should be the default])
4648 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4649 gcc_cv_target_dl_iterate_phdr=unknown
4652 # <link.h> needs both a dl_iterate_phdr declaration and support for
4653 # compilation with largefile support.
4654 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4655 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4656 gcc_cv_target_dl_iterate_phdr=yes
4658 gcc_cv_target_dl_iterate_phdr=no
4662 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4663 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4664 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4665 [Define if your target C library provides the `dl_iterate_phdr' function.])
4667 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4669 # Find out what GC implementation we want, or may, use.
4671 [AS_HELP_STRING([--with-gc={page,zone}],
4672 [choose the garbage collection mechanism to use
4673 with the compiler])],
4680 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4683 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4688 echo "Using $GGC for garbage collection."
4690 # Libraries to use on the host. This will normally be set by the top
4691 # level Makefile. Here we simply capture the value for our Makefile.
4692 if test -z "${HOST_LIBS+set}"; then
4697 # Use the system's zlib library.
4699 zlibinc="-I\$(srcdir)/../zlib"
4700 AC_ARG_WITH(system-zlib,
4701 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4708 dnl Very limited version of automake's enable-maintainer-mode
4710 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4711 dnl maintainer-mode is disabled by default
4712 AC_ARG_ENABLE(maintainer-mode,
4713 [AS_HELP_STRING([--enable-maintainer-mode],
4714 [enable make rules and dependencies not useful
4715 (and sometimes confusing) to the casual installer])],
4716 maintainer_mode=$enableval,
4719 AC_MSG_RESULT($maintainer_mode)
4721 if test "$maintainer_mode" = "yes"; then
4732 # Make empty files to contain the specs and options for each language.
4733 # Then add #include lines to for a compiler that has specs and/or options.
4739 # These (without "all_") are set in each config-lang.in.
4740 # `language' must be a single word so is spelled singularly.
4743 all_outputs='Makefile'
4744 # List of language makefile fragments.
4746 # Additional files for gengtype
4747 all_gtfiles="$target_gtfiles"
4749 # These are the languages that are set in --enable-languages,
4750 # and are available in the GCC tree.
4751 all_selected_languages=
4753 # Add the language fragments.
4754 # Languages are added via two mechanisms. Some information must be
4755 # recorded in makefile variables, these are defined in config-lang.in.
4756 # We accumulate them and plug them into the main Makefile.
4757 # The other mechanism is a set of hooks for each of the main targets
4758 # like `clean', `install', etc.
4760 language_hooks="Make-hooks"
4762 for lang in ${srcdir}/*/config-lang.in
4765 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4767 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4768 if test "x$lang_alias" = x
4770 echo "$lang doesn't set \$language." 1>&2
4773 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4774 subdirs="$subdirs $subdir"
4776 # $gcc_subdir is where the gcc integration files are to be found
4777 # for a language, both for internal compiler purposes (compiler
4778 # sources implementing front-end to GCC tree converters), and for
4779 # build infrastructure purposes (Make-lang.in, etc.)
4781 # This will be <subdir> (relative to $srcdir) if a line like
4782 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4783 # is found in <langdir>/config-lang.in, and will remain <langdir>
4786 # Except for the language alias (fetched above), the regular
4787 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4788 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4789 # only this and the language alias.
4791 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4792 if [ "$gcc_subdir" = "" ]; then
4793 gcc_subdir="$subdir"
4796 case ",$enable_languages," in
4798 all_selected_languages="$all_selected_languages $lang_alias"
4799 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4800 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4812 . ${srcdir}/$gcc_subdir/config-lang.in
4813 if test "x$language" = x
4815 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4820 case ",$enable_languages," in
4823 for i in $subdir_requires; do
4824 test -f "${srcdir}/$i/config-lang.in" && continue
4832 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4833 if test -f $srcdir/$gcc_subdir/lang.opt; then
4834 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4835 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4837 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4838 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4840 all_languages="$all_languages $language"
4841 all_compilers="$all_compilers $compilers"
4842 all_outputs="$all_outputs $outputs"
4843 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4844 case ",$enable_languages," in
4846 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4848 AC_SUBST(enable_lto)
4854 # Pick up gtfiles for c
4856 . ${srcdir}/c-config-lang.in
4857 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4860 for language in $all_selected_languages
4862 check_languages="$check_languages check-$language"
4865 # We link each language in with a set of hooks, reached indirectly via
4866 # lang.${target}. Only do so for selected languages.
4870 target_list="all.cross start.encap rest.encap tags \
4871 install-common install-man install-info install-pdf install-html dvi \
4872 pdf html uninstall info man srcextra srcman srcinfo \
4873 mostlyclean clean distclean maintainer-clean install-plugin"
4875 for t in $target_list
4878 for lang in $all_selected_languages
4882 echo "lang.$t: $x" >> Make-hooks
4886 # Option include files
4889 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4890 option_includes="option-includes.mk"
4891 AC_SUBST_FILE(option_includes)
4899 echo "dir ." > .gdbinit
4900 echo "dir ${srcdir}" >> .gdbinit
4901 if test x$gdb_needs_out_file_path = xyes
4903 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4905 if test "x$subdirs" != x; then
4908 echo "dir ${srcdir}/$s" >> .gdbinit
4911 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4913 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4914 AC_SUBST(gcc_tooldir)
4917 # Find a directory in which to install a shared libgcc.
4919 AC_ARG_ENABLE(version-specific-runtime-libs,
4920 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
4921 [specify that runtime libraries should be
4922 installed in a compiler-specific directory])])
4924 AC_ARG_WITH(slibdir,
4925 [AS_HELP_STRING([--with-slibdir=DIR], [shared libraries in DIR @<:@LIBDIR@:>@])],
4926 slibdir="$with_slibdir",
4927 if test "${enable_version_specific_runtime_libs+set}" = set; then
4928 slibdir='$(libsubdir)'
4929 elif test "$host" != "$target"; then
4930 slibdir='$(build_tooldir)/lib'
4936 # Substitute configuration variables
4939 AC_SUBST(all_compilers)
4940 AC_SUBST(all_gtfiles)
4941 AC_SUBST(all_lang_makefrags)
4942 AC_SUBST(all_languages)
4943 AC_SUBST(all_selected_languages)
4944 AC_SUBST(build_exeext)
4945 AC_SUBST(build_install_headers_dir)
4946 AC_SUBST(build_xm_file_list)
4947 AC_SUBST(build_xm_include_list)
4948 AC_SUBST(build_xm_defines)
4949 AC_SUBST(build_file_translate)
4950 AC_SUBST(check_languages)
4951 AC_SUBST(cpp_install_dir)
4952 AC_SUBST(xmake_file)
4953 AC_SUBST(tmake_file)
4954 AC_SUBST(TM_ENDIAN_CONFIG)
4955 AC_SUBST(TM_MULTILIB_CONFIG)
4956 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4957 AC_SUBST(extra_gcc_objs)
4958 AC_SUBST(user_headers_inc_next_pre)
4959 AC_SUBST(user_headers_inc_next_post)
4960 AC_SUBST(extra_headers_list)
4961 AC_SUBST(extra_objs)
4962 AC_SUBST(extra_parts)
4963 AC_SUBST(extra_passes)
4964 AC_SUBST(extra_programs)
4965 AC_SUBST(float_h_file)
4966 AC_SUBST(gcc_config_arguments)
4967 AC_SUBST(gcc_gxx_include_dir)
4968 AC_SUBST(host_exeext)
4969 AC_SUBST(host_xm_file_list)
4970 AC_SUBST(host_xm_include_list)
4971 AC_SUBST(host_xm_defines)
4972 AC_SUBST(out_host_hook_obj)
4974 AC_SUBST(lang_opt_files)
4975 AC_SUBST(lang_specs_files)
4976 AC_SUBST(lang_tree_files)
4977 AC_SUBST(local_prefix)
4979 AC_SUBST(objc_boehm_gc)
4981 AC_SUBST(out_object_file)
4982 AC_SUBST(common_out_file)
4983 AC_SUBST(common_out_object_file)
4984 AC_SUBST(thread_file)
4985 AC_SUBST(tm_file_list)
4986 AC_SUBST(tm_include_list)
4987 AC_SUBST(tm_defines)
4988 AC_SUBST(libgcc_tm_file_list)
4989 AC_SUBST(libgcc_tm_include_list)
4990 AC_SUBST(tm_p_file_list)
4991 AC_SUBST(tm_p_include_list)
4992 AC_SUBST(xm_file_list)
4993 AC_SUBST(xm_include_list)
4994 AC_SUBST(xm_defines)
4995 AC_SUBST(use_gcc_stdint)
4996 AC_SUBST(c_target_objs)
4997 AC_SUBST(cxx_target_objs)
4998 AC_SUBST(fortran_target_objs)
4999 AC_SUBST(target_cpu_default)
5001 AC_SUBST_FILE(language_hooks)
5004 if test x${build} = x${host} ; then
5005 if test x${host} = x${target} ; then
5006 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5008 echo "Links are now set up to build a cross-compiler" 1>&2
5009 echo " from ${host} to ${target}." 1>&2
5012 if test x${host} = x${target} ; then
5013 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5014 echo " for ${target}." 1>&2
5016 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5017 echo " from ${host} to ${target}." 1>&2
5021 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5022 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5024 AC_ARG_VAR(PPLLIBS,[How to link PPL])
5025 AC_ARG_VAR(PPLINC,[How to find PPL include files])
5027 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5028 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5029 if test "x${CLOOGLIBS}" != "x" ; then
5030 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5033 # Check for plugin support
5034 AC_ARG_ENABLE(plugin,
5035 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5036 enable_plugin=$enableval,
5037 enable_plugin=yes; default_plugin=yes)
5043 if test x$build = x$host; then
5044 export_sym_check="nm${exeext} -g"
5045 elif test x$host = x$target; then
5046 export_sym_check="$gcc_cv_nm -g"
5052 if test x$build = x$host; then
5053 export_sym_check="objdump${exeext} -T"
5054 elif test x$host = x$target; then
5055 export_sym_check="$gcc_cv_objdump -T"
5062 if test x"$enable_plugin" = x"yes"; then
5064 AC_MSG_CHECKING([for exported symbols])
5065 if test "x$export_sym_check" != x; then
5066 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5067 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
5068 if $export_sym_check conftest | grep foobar > /dev/null; then
5069 : # No need to use a flag
5070 AC_MSG_RESULT([yes])
5072 AC_MSG_RESULT([yes])
5073 AC_MSG_CHECKING([for -rdynamic])
5074 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
5075 if $export_sym_check conftest | grep foobar > /dev/null; then
5077 pluginlibs="-rdynamic"
5082 AC_MSG_RESULT([$plugin_rdynamic])
5085 AC_MSG_RESULT([unable to check])
5090 AC_SEARCH_LIBS([dlopen], [dl])
5091 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5092 pluginlibs="$pluginlibs -ldl"
5096 # Check that we can build shared objects with -fPIC -shared
5097 saved_LDFLAGS="$LDFLAGS"
5098 saved_CFLAGS="$CFLAGS"
5101 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5102 CFLAGS="$CFLAGS -fPIC"
5103 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5106 CFLAGS="$CFLAGS -fPIC"
5107 LDFLAGS="$LDFLAGS -fPIC -shared"
5110 AC_MSG_CHECKING([for -fPIC -shared])
5112 [extern int X;],[return X == 0;],
5113 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5114 [AC_MSG_RESULT([no]); have_pic_shared=no])
5115 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5119 LDFLAGS="$saved_LDFLAGS"
5120 CFLAGS="$saved_CFLAGS"
5122 # If plugin support had been requested but not available, fail.
5123 if test x"$enable_plugin" = x"no" ; then
5124 if test x"$default_plugin" != x"yes"; then
5126 Building GCC with plugin support requires a host that supports
5127 -fPIC, -shared, -ldl and -rdynamic.])
5132 AC_SUBST(pluginlibs)
5133 AC_SUBST(enable_plugin)
5134 if test x"$enable_plugin" = x"yes"; then
5135 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5139 AC_ARG_ENABLE(libquadmath-support,
5140 [AS_HELP_STRING([--disable-libquadmath-support],
5141 [disable libquadmath support for Fortran])],
5142 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5143 ENABLE_LIBQUADMATH_SUPPORT=yes)
5144 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5145 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5146 [Define to 1 to enable libquadmath support])
5150 # Specify what hash style to use by default.
5151 AC_ARG_WITH([linker-hash-style],
5152 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5153 [specify the linker hash style])],
5154 [case x"$withval" in
5156 LINKER_HASH_STYLE=sysv
5159 LINKER_HASH_STYLE=gnu
5162 LINKER_HASH_STYLE=both
5165 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5168 [LINKER_HASH_STYLE=''])
5169 if test x"${LINKER_HASH_STYLE}" != x; then
5170 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5171 [The linker hash style])
5174 # Configure the subdirectories
5175 # AC_CONFIG_SUBDIRS($subdirs)
5177 # Create the Makefile
5178 # and configure language subdirectories
5179 AC_CONFIG_FILES($all_outputs)
5181 AC_CONFIG_COMMANDS([default],
5183 case ${CONFIG_HEADERS} in
5184 *auto-host.h:config.in*)
5187 # Make sure all the subdirs exist.
5188 for d in $subdirs doc build common c-family
5190 test -d $d || mkdir $d
5193 [subdirs='$subdirs'])