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 # -------------------------
301 # Check C compiler features
302 # -------------------------
304 AC_USE_SYSTEM_EXTENSIONS
310 # sizeof(char) is 1 by definition.
311 AC_CHECK_SIZEOF(void *)
312 AC_CHECK_SIZEOF(short)
314 AC_CHECK_SIZEOF(long)
315 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
316 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
319 # ---------------------
320 # Warnings and checking
321 # ---------------------
323 # Check $CC warning features (if it's GCC).
324 # We want to use -pedantic, but we don't want warnings about
328 # So, we only use -pedantic if we can disable those warnings.
330 ACX_PROG_CC_WARNING_OPTS(
331 m4_quote(m4_do([-W -Wall -Wwrite-strings -Wcast-qual])), [loose_warn])
332 ACX_PROG_CC_WARNING_OPTS(
333 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
335 ACX_PROG_CC_WARNING_OPTS(
336 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
337 ACX_PROG_CC_WARNING_OPTS(
338 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
339 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
340 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
341 [-Wno-overlength-strings])), [strict_warn])
342 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
344 # The above macros do nothing if the compiler is not GCC. However, the
345 # Makefile has more goo to add other flags, so these variables are used
346 # to enable warnings only for GCC.
349 if test "x$GCC" = "xyes"; then
350 warn_cflags='$(GCC_WARN_CFLAGS)'
351 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
353 AC_SUBST(warn_cflags)
354 AC_SUBST(warn_cxxflags)
356 # Enable expensive internal checks
358 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
362 AC_ARG_ENABLE(checking,
363 [AS_HELP_STRING([[--enable-checking[=LIST]]],
364 [enable expensive run-time checks. With LIST,
365 enable only specific categories of checks.
366 Categories are: yes,no,all,none,release.
367 Flags are: assert,df,fold,gc,gcac,gimple,misc,
368 rtlflag,rtl,runtime,tree,valgrind,types])],
369 [ac_checking_flags="${enableval}"],[
370 # Determine the default checks.
371 if test x$is_release = x ; then
372 ac_checking_flags=yes
374 ac_checking_flags=release
376 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
377 for check in release $ac_checking_flags
380 # these set all the flags to specific states
381 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
382 ac_fold_checking= ; ac_gc_checking=1 ;
383 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
384 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
385 ac_tree_checking=1 ; ac_valgrind_checking= ;
386 ac_types_checking=1 ;;
387 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
388 ac_fold_checking= ; ac_gc_checking= ;
389 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
390 ac_rtlflag_checking= ; ac_runtime_checking= ;
391 ac_tree_checking= ; ac_valgrind_checking= ;
392 ac_types_checking= ;;
393 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
394 ac_fold_checking=1 ; ac_gc_checking=1 ;
395 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
396 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
397 ac_tree_checking=1 ; ac_valgrind_checking= ;
398 ac_types_checking=1 ;;
399 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
400 ac_fold_checking= ; ac_gc_checking= ;
401 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
402 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
403 ac_tree_checking= ; ac_valgrind_checking= ;
404 ac_types_checking= ;;
405 # these enable particular checks
406 assert) ac_assert_checking=1 ;;
407 df) ac_df_checking=1 ;;
408 fold) ac_fold_checking=1 ;;
409 gc) ac_gc_checking=1 ;;
410 gcac) ac_gc_always_collect=1 ;;
411 gimple) ac_gimple_checking=1 ;;
412 misc) ac_checking=1 ;;
413 rtl) ac_rtl_checking=1 ;;
414 rtlflag) ac_rtlflag_checking=1 ;;
415 runtime) ac_runtime_checking=1 ;;
416 tree) ac_tree_checking=1 ;;
417 types) ac_types_checking=1 ;;
418 valgrind) ac_valgrind_checking=1 ;;
419 *) AC_MSG_ERROR(unknown check category $check) ;;
425 if test x$ac_checking != x ; then
426 AC_DEFINE(ENABLE_CHECKING, 1,
427 [Define if you want more run-time sanity checks. This one gets a grab
428 bag of miscellaneous but relatively cheap checks.])
429 nocommon_flag=-fno-common
431 AC_SUBST(nocommon_flag)
432 if test x$ac_df_checking != x ; then
433 AC_DEFINE(ENABLE_DF_CHECKING, 1,
434 [Define if you want more run-time sanity checks for dataflow.])
436 if test x$ac_assert_checking != x ; then
437 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
438 [Define if you want assertions enabled. This is a cheap check.])
440 if test x$ac_gimple_checking != x ; then
441 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
442 [Define if you want operations on GIMPLE (the basic data structure of
443 the high-level optimizers) to be checked for dynamic type safety at
444 runtime. This is moderately expensive.])
446 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
447 if test x$ac_runtime_checking != x ; then
448 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
449 [Define if you want runtime assertions enabled. This is a cheap check.])
451 if test x$ac_tree_checking != x ; then
452 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
453 [Define if you want all operations on trees (the basic data
454 structure of the front ends) to be checked for dynamic type safety
455 at runtime. This is moderately expensive. The tree browser debugging
456 routines will also be enabled by this option.
458 TREEBROWSER=tree-browser.o
460 if test x$ac_types_checking != x ; then
461 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
462 [Define if you want all gimple types to be verified after gimplifiation.
466 AC_SUBST(TREEBROWSER)
467 if test x$ac_rtl_checking != x ; then
468 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
469 [Define if you want all operations on RTL (the basic data structure
470 of the optimizer and back end) to be checked for dynamic type safety
471 at runtime. This is quite expensive.])
473 if test x$ac_rtlflag_checking != x ; then
474 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
475 [Define if you want RTL flag accesses to be checked against the RTL
476 codes that are supported for each access macro. This is relatively
479 if test x$ac_gc_checking != x ; then
480 AC_DEFINE(ENABLE_GC_CHECKING, 1,
481 [Define if you want the garbage collector to do object poisoning and
482 other memory allocation checks. This is quite expensive.])
484 if test x$ac_gc_always_collect != x ; then
485 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
486 [Define if you want the garbage collector to operate in maximally
487 paranoid mode, validating the entire heap and collecting garbage at
488 every opportunity. This is extremely expensive.])
490 if test x$ac_fold_checking != x ; then
491 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
492 [Define if you want fold checked that it never destructs its argument.
493 This is quite expensive.])
495 valgrind_path_defines=
498 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
499 dnl # an if statement. This was the source of very frustrating bugs
500 dnl # in converting to autoconf 2.5x!
501 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
503 if test x$ac_valgrind_checking != x ; then
504 # It is certainly possible that there's valgrind but no valgrind.h.
505 # GCC relies on making annotations so we must have both.
506 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
507 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
508 [[#include <valgrind/memcheck.h>
509 #ifndef VALGRIND_DISCARD
510 #error VALGRIND_DISCARD not defined
512 [gcc_cv_header_valgrind_memcheck_h=yes],
513 [gcc_cv_header_valgrind_memcheck_h=no])
514 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
515 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
516 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
517 [[#include <memcheck.h>
518 #ifndef VALGRIND_DISCARD
519 #error VALGRIND_DISCARD not defined
521 [gcc_cv_header_memcheck_h=yes],
522 [gcc_cv_header_memcheck_h=no])
523 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
524 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
525 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
526 if test "x$valgrind_path" = "x" \
527 || (test $have_valgrind_h = no \
528 && test $gcc_cv_header_memcheck_h = no \
529 && test $gcc_cv_header_valgrind_memcheck_h = no); then
530 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
532 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
533 valgrind_command="$valgrind_path -q"
534 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
535 [Define if you want to run subprograms and generated programs
536 through valgrind (a memory checker). This is extremely expensive.])
537 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
538 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
539 [Define if valgrind's valgrind/memcheck.h header is installed.])
541 if test $gcc_cv_header_memcheck_h = yes; then
542 AC_DEFINE(HAVE_MEMCHECK_H, 1,
543 [Define if valgrind's memcheck.h header is installed.])
546 AC_SUBST(valgrind_path_defines)
547 AC_SUBST(valgrind_command)
549 # Enable code coverage collection
550 AC_ARG_ENABLE(coverage,
551 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
552 [enable compiler's code coverage collection.
553 Use to measure compiler performance and locate
554 unused parts of the compiler. With LEVEL, specify
555 optimization. Values are opt, noopt,
557 [case "${enableval}" in
559 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
562 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
565 # a.k.a. --disable-coverage
569 AC_MSG_ERROR(unknown coverage setting $enableval)
573 AC_SUBST(coverage_flags)
575 AC_ARG_ENABLE(gather-detailed-mem-stats,
576 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
577 [enable detailed memory allocation stats gathering])], [],
578 [enable_gather_detailed_mem_stats=no])
579 if test x$enable_gather_detailed_mem_stats = xyes ; then
580 AC_DEFINE(GATHER_STATISTICS, 1,
581 [Define to enable detailed memory allocation stats gathering.])
584 # -------------------------------
585 # Miscenalleous configure options
586 # -------------------------------
588 # See if we are building gcc with C++.
589 AC_ARG_ENABLE(build-with-cxx,
590 [AS_HELP_STRING([--enable-build-with-cxx],
591 [build with C++ compiler instead of C compiler])],
592 ENABLE_BUILD_WITH_CXX=$enableval,
593 ENABLE_BUILD_WITH_CXX=no)
594 AC_SUBST(ENABLE_BUILD_WITH_CXX)
595 if test "$ENABLE_BUILD_WITH_CXX" = "yes"; then
596 AC_DEFINE(ENABLE_BUILD_WITH_CXX, 1,
597 [Define if building with C++.])
602 [AS_HELP_STRING([--with-stabs],
603 [arrange to use stabs instead of host debug format])],
607 # Determine whether or not multilibs are enabled.
608 AC_ARG_ENABLE(multilib,
609 [AS_HELP_STRING([--enable-multilib],
610 [enable library support for multiple ABIs])],
611 [], [enable_multilib=yes])
612 AC_SUBST(enable_multilib)
614 # Enable __cxa_atexit for C++.
615 AC_ARG_ENABLE(__cxa_atexit,
616 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
619 # Enable C extension for decimal float if target supports it.
620 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
622 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
623 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
624 [Define to 1 to enable decimal float extension to C.])
626 # Use default_decimal_float for dependency.
627 enable_decimal_float=$default_decimal_float
629 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
630 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
631 [Define to 1 to specify that we are using the BID decimal floating
632 point format instead of DPD])
634 # Enable C extension for fixed-point arithmetic.
635 AC_ARG_ENABLE(fixed-point,
636 [AS_HELP_STRING([--enable-fixed-point],
637 [enable fixed-point arithmetic extension to C])],
642 enable_fixed_point=yes
648 AC_MSG_WARN([fixed-point is not supported on IRIX, ignored])
649 enable_fixed_point=no
652 enable_fixed_point=yes
657 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
658 enable_fixed_point=no
662 AC_SUBST(enable_fixed_point)
664 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
665 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
666 [Define to 1 to enable fixed-point arithmetic extension to C.])
669 # Pass with no value to take the default
670 # Pass with a value to specify a thread package
671 AC_ARG_ENABLE(threads,
672 [AS_HELP_STRING([[--enable-threads[=LIB]]],
673 [enable thread usage for target GCC,
674 using LIB thread package])],,
678 [AS_HELP_STRING([--enable-tls],
679 [enable or disable generation of tls code
680 overriding the assembler check for tls support])],
684 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
685 Valid choices are 'yes' and 'no'.]) ;;
689 AC_ARG_ENABLE(objc-gc,
690 [AS_HELP_STRING([--enable-objc-gc],
691 [enable the use of Boehm's garbage collector with
692 the GNU Objective-C runtime])],
693 if test x$enable_objc_gc = xno; then
701 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
702 dwarf2="$with_dwarf2",
705 AC_ARG_ENABLE(shared,
706 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
708 case $enable_shared in
712 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
713 for pkg in $enableval; do
714 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
721 ], [enable_shared=yes])
722 AC_SUBST(enable_shared)
724 AC_ARG_WITH(build-sysroot,
725 [AS_HELP_STRING([--with-build-sysroot=sysroot],
726 [use sysroot as the system root during the build])])
729 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
730 [search for usr/lib, usr/include, et al, within DIR])],
732 case ${with_sysroot} in
733 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
734 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
737 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
738 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
740 if test "x$prefix" = xNONE; then
741 test_prefix=/usr/local
745 if test "x$exec_prefix" = xNONE; then
746 test_exec_prefix=$test_prefix
748 test_exec_prefix=$exec_prefix
750 case ${TARGET_SYSTEM_ROOT} in
751 "${test_prefix}"|"${test_prefix}/"*|\
752 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
753 '${prefix}'|'${prefix}/'*|\
754 '${exec_prefix}'|'${exec_prefix}/'*)
755 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
756 TARGET_SYSTEM_ROOT_DEFINE="$t"
761 TARGET_SYSTEM_ROOT_DEFINE=
762 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
764 AC_SUBST(TARGET_SYSTEM_ROOT)
765 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
766 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
769 [AS_HELP_STRING([--with-specs=SPECS],
770 [add SPECS to driver command-line processing])],
771 [CONFIGURE_SPECS=$withval],
774 AC_SUBST(CONFIGURE_SPECS)
776 ACX_PKGVERSION([GCC])
777 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
779 # Sanity check enable_languages in case someone does not run the toplevel
780 # configure # script.
781 AC_ARG_ENABLE(languages,
782 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
783 [case ,${enable_languages}, in
785 # go safe -- we cannot be much sure without the toplevel
787 # analysis of which target libs are present and usable
791 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
796 enable_languages=c,${enable_languages}
799 [enable_languages=c])
801 AC_ARG_WITH(multilib-list,
802 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
804 with_multilib_list=default)
806 # -------------------------
807 # Checks for other programs
808 # -------------------------
812 # Find some useful tools
814 # We need awk to create options.c and options.h.
815 # Bail out if it's missing.
817 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
825 # By default, the Darwin ranlib will not treat common symbols as
826 # definitions when building the archive table of contents. Other
827 # ranlibs do that; pass an option to the Darwin ranlib that makes
828 # it behave similarly.
834 AC_SUBST(ranlib_flags)
838 # See if cmp has --ignore-initial.
839 gcc_AC_PROG_CMP_IGNORE_INITIAL
841 # See if we have the mktemp command.
842 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
844 # See if makeinfo has been installed and is modern enough
845 # that we can use it.
846 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
847 [GNU texinfo.* \([0-9][0-9.]*\)],
848 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
849 if test $gcc_cv_prog_makeinfo_modern = no; then
851 *** Makeinfo is missing or too old.
852 *** Info documentation will not be built.])
859 # Is pod2man recent enough to regenerate manpages?
860 AC_MSG_CHECKING([for recent Pod::Man])
861 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
863 GENERATED_MANPAGES=generated-manpages
868 AC_SUBST(GENERATED_MANPAGES)
870 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
873 dnl Don't use AC_PROG_LEX; we insist on flex.
874 dnl LEXLIB is not useful in gcc.
875 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
878 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
880 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
881 # check for build == host before using them.
884 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
885 && test -d ../binutils ; then
886 NM='${objdir}/../binutils/nm-new'
888 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
892 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
893 && test -d ../binutils ; then
894 AR='${objdir}/../binutils/ar'
896 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
900 # --------------------
901 # Checks for C headers
902 # --------------------
904 # Need to reject headers which give warnings, so that the -Werror bootstrap
905 # works later. *sigh* This needs to come before all header checks.
912 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
913 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
914 sys/resource.h sys/param.h sys/times.h sys/stat.h \
915 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
917 # Check for thread headers.
918 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
919 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
921 # These tests can't be done till we know if we have limits.h.
925 # ----------------------
926 # Checks for C++ headers
927 # ----------------------
929 dnl Autoconf will give an error in the configure script if there is no
930 dnl C++ preprocessor. Hack to prevent that.
931 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
933 m4_popdef([AC_MSG_ERROR])[]dnl
937 AC_CHECK_HEADERS(unordered_map)
938 AC_CHECK_HEADERS(tr1/unordered_map)
939 AC_CHECK_HEADERS(ext/hash_map)
948 # These libraries may be used by collect2.
949 # We may need a special search path to get them linked.
950 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
952 for libs in '' -lld -lmld \
953 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
954 '-L/usr/lib/cmplrs/cc3.11 -lmld'
957 AC_TRY_LINK_FUNC(ldopen,
958 [gcc_cv_collect2_libs="$libs"; break])
961 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
962 case $gcc_cv_collect2_libs in
964 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
966 AC_SUBST(COLLECT2_LIBS)
968 # When building Ada code on Alpha, we need exc_resume which is usually in
969 # -lexc. So test for it.
972 AC_SEARCH_LIBS(exc_resume, exc)
975 AC_SUBST(GNAT_LIBEXC)
977 # Some systems put ldexp and frexp in libm instead of libc; assume
978 # they're both in the same place. jcf-dump needs them.
981 AC_SEARCH_LIBS(ldexp, m)
986 # Use <inttypes.h> only if it exists,
987 # doesn't clash with <sys/types.h>, and declares intmax_t.
988 AC_MSG_CHECKING(for inttypes.h)
989 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
990 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
991 [[#include <sys/types.h>
992 #include <inttypes.h>]],
993 [[intmax_t i = -1;]])],
994 [gcc_cv_header_inttypes_h=yes],
995 [gcc_cv_header_inttypes_h=no])])
996 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
997 if test $gcc_cv_header_inttypes_h = yes; then
998 AC_DEFINE(HAVE_INTTYPES_H, 1,
999 [Define if you have a working <inttypes.h> header file.])
1002 dnl Disabled until we have a complete test for buggy enum bitfields.
1003 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1005 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1006 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1007 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1008 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1009 putchar_unlocked putc_unlocked)
1010 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1011 sysconf strsignal getrusage nl_langinfo \
1012 gettimeofday mbstowcs wcswidth mmap setlocale \
1015 if test x$ac_cv_func_mbstowcs = xyes; then
1016 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1017 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1023 [gcc_cv_func_mbstowcs_works=yes],
1024 [gcc_cv_func_mbstowcs_works=no],
1025 [gcc_cv_func_mbstowcs_works=yes])])
1026 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1027 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1028 [Define this macro if mbstowcs does not crash when its
1029 first argument is NULL.])
1033 AC_CHECK_TYPE(ssize_t, int)
1034 AC_CHECK_TYPE(caddr_t, char *)
1036 gcc_AC_FUNC_MMAP_BLACKLIST
1040 # Under VMS, vfork works very differently than on Unix. The standard test
1041 # won't work, and it isn't easily adaptable. It makes more sense to
1043 ac_cv_func_vfork_works=yes
1048 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1049 # iconv() prototype.
1050 AS_IF([test "$ENABLE_BUILD_WITH_CXX" = "yes"],
1051 [AC_LANG_PUSH([C++])
1053 AC_LANG_POP([C++])],
1056 # Until we have in-tree GNU iconv:
1058 AC_SUBST(LIBICONV_DEP)
1064 # We will need to find libiberty.h and ansidecl.h
1065 saved_CFLAGS="$CFLAGS"
1066 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1067 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1068 strsignal strstr strverscmp \
1069 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1070 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1071 #include "ansidecl.h"
1072 #include "system.h"])
1074 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1075 #include "ansidecl.h"
1077 #ifdef HAVE_SYS_RESOURCE_H
1078 #include <sys/resource.h>
1082 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1083 #include "ansidecl.h"
1085 #ifdef HAVE_SYS_RESOURCE_H
1086 #include <sys/resource.h>
1088 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1089 [Define to `long' if <sys/resource.h> doesn't define.])])
1091 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1092 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1093 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1094 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1095 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1096 #include "ansidecl.h"
1105 gcc_AC_CHECK_DECLS(times, , ,[
1106 #include "ansidecl.h"
1108 #ifdef HAVE_SYS_TIMES_H
1109 #include <sys/times.h>
1113 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1114 #include "ansidecl.h"
1119 # More time-related stuff.
1120 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1121 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1122 #include "ansidecl.h"
1124 #ifdef HAVE_SYS_TIMES_H
1125 #include <sys/times.h>
1127 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1128 if test $ac_cv_struct_tms = yes; then
1129 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1130 [Define if <sys/times.h> defines struct tms.])
1133 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1134 # revisit after autoconf 2.50.
1135 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1136 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1137 #include "ansidecl.h"
1139 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1140 if test $gcc_cv_type_clock_t = yes; then
1141 AC_DEFINE(HAVE_CLOCK_T, 1,
1142 [Define if <time.h> defines clock_t.])
1145 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1146 CFLAGS="$saved_CFLAGS"
1148 gcc_AC_INITFINI_ARRAY
1150 # mkdir takes a single argument on some systems.
1151 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1159 # With Setjmp/Longjmp based exception handling.
1160 AC_ARG_ENABLE(sjlj-exceptions,
1161 [AS_HELP_STRING([--enable-sjlj-exceptions],
1162 [arrange to use setjmp/longjmp exception handling])],
1165 if test $enableval != yes; then
1166 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1171 force_sjlj_exceptions=yes],
1174 force_sjlj_exceptions=yes
1178 force_sjlj_exceptions=no
1181 if test $force_sjlj_exceptions = yes; then
1182 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1183 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1184 [Define 0/1 to force the choice for exception handling model.])
1187 # For platforms with the unwind ABI which includes an unwind library,
1188 # libunwind, we can choose to use the system libunwind.
1189 # config.gcc also contains tests of with_system_libunwind.
1190 GCC_CHECK_UNWIND_GETIPINFO
1192 # --------------------------------------------------------
1193 # Build, host, and target specific configuration fragments
1194 # --------------------------------------------------------
1196 # Collect build-machine-specific information.
1197 . ${srcdir}/config.build
1199 # Collect host-machine-specific information.
1200 . ${srcdir}/config.host
1204 # Collect target-machine-specific information.
1205 . ${srcdir}/config.gcc
1207 extra_objs="${host_extra_objs} ${extra_objs}"
1208 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1210 # Default the target-machine variables that were not explicitly set.
1211 if test x"$tm_file" = x
1212 then tm_file=$cpu_type/$cpu_type.h; fi
1214 if test x"$extra_headers" = x
1215 then extra_headers=; fi
1217 if test x$md_file = x
1218 then md_file=$cpu_type/$cpu_type.md; fi
1220 if test x$out_file = x
1221 then out_file=$cpu_type/$cpu_type.c; fi
1223 if test x"$tmake_file" = x
1224 then tmake_file=$cpu_type/t-$cpu_type
1227 if test x"$dwarf2" = xyes
1228 then tm_file="$tm_file tm-dwarf2.h"
1231 # Say what files are being used for the output code and MD file.
1232 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1233 echo "Using \`$srcdir/config/$md_file' as machine description file."
1235 # If any of the xm_file variables contain nonexistent files, warn
1236 # about them and drop them.
1239 for x in $build_xm_file; do
1240 if test -f $srcdir/config/$x
1242 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1248 for x in $host_xm_file; do
1249 if test -f $srcdir/config/$x
1251 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1257 for x in $xm_file; do
1258 if test -f $srcdir/config/$x
1260 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1266 for f in $tm_file; do
1269 if test $count = ax; then
1270 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1272 echo "Using the following target machine macro files:"
1273 for f in $tm_file; do
1274 echo " $srcdir/config/$f"
1278 if test x$need_64bit_hwint = xyes; then
1279 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1280 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1283 if test x$use_long_long_for_widest_fast_int = xyes; then
1284 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1285 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1286 efficiently supported by the host hardware.])
1290 for f in $host_xm_file; do
1293 if test $count = a; then
1295 elif test $count = ax; then
1296 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1298 echo "Using the following host machine macro files:"
1299 for f in $host_xm_file; do
1300 echo " $srcdir/config/$f"
1303 echo "Using ${out_host_hook_obj} for host machine hooks."
1305 if test "$host_xm_file" != "$build_xm_file"; then
1307 for f in $build_xm_file; do
1310 if test $count = a; then
1312 elif test $count = ax; then
1313 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1315 echo "Using the following build machine macro files:"
1316 for f in $build_xm_file; do
1317 echo " $srcdir/config/$f"
1324 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1325 gcc_cv_mcontext_underscores,
1327 #include <sys/cdefs.h>
1328 #include <sys/signal.h>
1329 #include <ucontext.h>
1330 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1332 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1333 if test $gcc_cv_mcontext_underscores = yes; then
1334 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1335 [mcontext_t fields start with __])
1344 # Check if a valid thread package
1345 case ${enable_threads} in
1348 target_thread_file='single'
1352 target_thread_file='single'
1354 aix | dce | lynx | mipssde | posix | posix95 | rtems | \
1355 single | tpf | vxworks | win32)
1356 target_thread_file=${enable_threads}
1359 echo "${enable_threads} is an unknown thread package" 1>&2
1364 if test x${thread_file} = x; then
1365 # No thread file set by target-specific clauses in config.gcc,
1366 # so use file chosen by default logic above
1367 thread_file=${target_thread_file}
1370 # Make gthr-default.h if we have a thread file.
1372 if test $thread_file != single; then
1373 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1374 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1375 rm -f gthr-default.h-t
1377 mv -f gthr-default.h-t gthr-default.h
1379 gthread_flags=-DHAVE_GTHR_DEFAULT
1381 AC_SUBST(gthread_flags)
1388 if test x$enable___cxa_atexit = xyes || \
1389 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1390 if test x$host = x$target; then
1392 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1393 # keyed to flag_use_cxa_atexit
1398 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1399 [echo "__cxa_atexit can't be enabled on this target"])
1403 # We can't check for __cxa_atexit when building a cross, so assume
1407 if test x$use_cxa_atexit = xyes; then
1408 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1409 [Define if you want to use __cxa_atexit, rather than atexit, to
1410 register C++ destructors for local statics and global objects.
1411 This is essential for fully standards-compliant handling of
1412 destructors, but requires __cxa_atexit in libc.])
1416 # Look for a file containing extra machine modes.
1417 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1418 extra_modes_file='$(srcdir)'/config/${extra_modes}
1419 AC_SUBST(extra_modes_file)
1420 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1421 [Define to the name of a file containing a list of extra machine modes
1422 for this architecture.])
1425 # Convert extra_options into a form suitable for Makefile use.
1428 for f in $extra_options; do
1429 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1430 all_opt_files="$all_opt_files $srcdir/config/$f"
1432 AC_SUBST(extra_opt_files)
1434 # auto-host.h is the file containing items generated by autoconf and is
1435 # the first file included by config.h.
1436 # If host=build, it is correct to have bconfig include auto-host.h
1437 # as well. If host!=build, we are in error and need to do more
1438 # work to find out the build config parameters.
1439 if test x$host = x$build
1441 build_auto=auto-host.h
1443 # We create a subdir, then run autoconf in the subdir.
1444 # To prevent recursion we set host and build for the new
1445 # invocation of configure to the build for this invocation
1452 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1453 *) realsrcdir=../${srcdir};;
1455 saved_CFLAGS="${CFLAGS}"
1456 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1457 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1458 ${realsrcdir}/configure \
1459 --enable-languages=${enable_languages-all} \
1460 --target=$target_alias --host=$build_alias --build=$build_alias
1461 CFLAGS="${saved_CFLAGS}"
1463 # We just finished tests for the build machine, so rename
1464 # the file auto-build.h in the gcc directory.
1465 mv auto-host.h ../auto-build.h
1468 build_auto=auto-build.h
1470 AC_SUBST(build_subdir)
1472 tm_file="${tm_file} defaults.h"
1473 tm_p_file="${tm_p_file} tm-preds.h"
1474 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1475 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1476 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1477 # put this back in temporarily.
1478 xm_file="auto-host.h ansidecl.h ${xm_file}"
1485 # Compile in configure arguments.
1486 if test -f configargs.h ; then
1487 # Being re-configured.
1488 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1489 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1491 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1494 # Double all backslashes and backslash all quotes to turn
1495 # gcc_config_arguments into a C string.
1496 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1497 $gcc_config_arguments
1499 gcc_config_arguments_str=`cat conftest.out`
1502 cat > configargs.h <<EOF
1503 /* Generated automatically. */
1504 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1505 static const char thread_model[] = "$thread_file";
1507 static const struct {
1508 const char *name, *value;
1509 } configure_default_options[] = $configure_default_options;
1514 gcc_BASEVER=`cat $srcdir/BASE-VER`
1515 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1516 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1517 if test -f $srcdir/REVISION ; then
1518 gcc_REVISION=`cat $srcdir/REVISION`
1522 cat > plugin-version.h <<EOF
1523 #include "configargs.h"
1525 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1526 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1527 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1528 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1530 static char basever[] = "$gcc_BASEVER";
1531 static char datestamp[] = "$gcc_DATESTAMP";
1532 static char devphase[] = "$gcc_DEVPHASE";
1533 static char revision[] = "$gcc_REVISION";
1535 /* FIXME plugins: We should make the version information more precise.
1536 One way to do is to add a checksum. */
1538 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1540 configuration_arguments};
1544 # Internationalization
1545 ZW_GNU_GETTEXT_SISTER_DIR
1547 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1548 # -liconv on the link line twice.
1549 case "$LIBINTL" in *$LIBICONV*)
1553 AC_ARG_ENABLE(secureplt,
1554 [AS_HELP_STRING([--enable-secureplt],
1555 [enable -msecure-plt by default for PowerPC])],
1558 AC_ARG_ENABLE(leading-mingw64-underscores,
1559 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1560 [enable leading underscores on 64 bit mingw targets]),
1562 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1563 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1564 [Define if we should use leading underscore on 64 bit mingw targets])])
1567 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1570 AC_ARG_ENABLE(frame-pointer,
1571 [AS_HELP_STRING([--enable-frame-pointer],
1572 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1575 linux* | darwin[[8912]]*)
1576 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1578 enable_frame_pointer=no
1581 enable_frame_pointer=yes
1586 # Windows32 Registry support for specifying GCC installation paths.
1587 AC_ARG_ENABLE(win32-registry,
1588 [AS_HELP_STRING([--disable-win32-registry],
1589 [disable lookup of installation paths in the
1590 Registry on Windows hosts])
1591 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1592 AS_HELP_STRING([--enable-win32-registry=KEY],
1593 [use KEY instead of GCC version as the last portion
1594 of the registry key])],,)
1597 win32 | pe | cygwin* | mingw32* | uwin*)
1598 if test "x$enable_win32_registry" != xno; then
1599 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1602 if test "x$enable_win32_registry" != xno; then
1603 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1604 [Define to 1 if installation paths should be looked up in the Windows
1605 Registry. Ignored on non-Windows hosts.])
1607 if test "x$enable_win32_registry" != xyes \
1608 && test "x$enable_win32_registry" != x; then
1609 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1610 [Define to be the last component of the Windows registry key under which
1611 to look for installation paths. The full key used will be
1612 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1613 The default is the GCC version number.])
1619 # Get an absolute path to the GCC top-level source directory
1620 holddir=`${PWDCMD-pwd}`
1622 topdir=`${PWDCMD-pwd}`
1625 # Conditionalize the makefile for this host machine.
1627 for f in ${host_xmake_file}
1629 if test -f ${srcdir}/config/$f
1631 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1635 # Conditionalize the makefile for this target machine.
1637 for f in ${tmake_file}
1639 if test -f ${srcdir}/config/$f
1641 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1644 tmake_file="${tmake_file_}"
1646 out_object_file=`basename $out_file .c`.o
1647 common_out_object_file=`basename $common_out_file .c`.o
1649 tm_file_list="options.h"
1650 tm_include_list="options.h insn-constants.h"
1651 for f in $tm_file; do
1654 f=`echo $f | sed 's/^..//'`
1655 tm_file_list="${tm_file_list} $f"
1656 tm_include_list="${tm_include_list} $f"
1659 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1660 tm_include_list="${tm_include_list} $f"
1663 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1664 tm_include_list="${tm_include_list} config/$f"
1669 libgcc_tm_file_list=
1670 libgcc_tm_include_list=
1671 for f in $libgcc_tm_file; do
1672 libgcc_tm_file_list="${libgcc_tm_file_list} \$(srcdir)/../libgcc/config/$f"
1673 libgcc_tm_include_list="${libgcc_tm_include_list} ../libgcc/config/$f"
1678 for f in $tm_p_file; do
1681 tm_p_file_list="${tm_p_file_list} $f"
1682 tm_p_include_list="${tm_p_include_list} $f"
1685 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1686 tm_p_include_list="${tm_p_include_list} config/$f"
1692 for f in $xm_file; do
1695 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1696 xm_include_list="${xm_include_list} $f"
1699 xm_file_list="${xm_file_list} $f"
1700 xm_include_list="${xm_include_list} $f"
1703 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1704 xm_include_list="${xm_include_list} config/$f"
1710 host_xm_include_list=
1711 for f in $host_xm_file; do
1714 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1715 host_xm_include_list="${host_xm_include_list} $f"
1718 host_xm_file_list="${host_xm_file_list} $f"
1719 host_xm_include_list="${host_xm_include_list} $f"
1722 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1723 host_xm_include_list="${host_xm_include_list} config/$f"
1729 for f in $build_xm_file; do
1732 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1733 build_xm_include_list="${build_xm_include_list} $f"
1735 auto-build.h | auto-host.h )
1736 build_xm_file_list="${build_xm_file_list} $f"
1737 build_xm_include_list="${build_xm_include_list} $f"
1740 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1741 build_xm_include_list="${build_xm_include_list} config/$f"
1746 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1747 # cross-compiler which does not use the native headers and libraries.
1748 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1749 CROSS= AC_SUBST(CROSS)
1750 ALL=all.internal AC_SUBST(ALL)
1751 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1753 if test "x$with_build_sysroot" != x; then
1754 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1756 # This value is used, even on a native system, because
1757 # CROSS_SYSTEM_HEADER_DIR is just
1758 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1759 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1762 if test x$host != x$target
1764 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1766 SYSTEM_HEADER_DIR=$build_system_header_dir
1767 case "$host","$target" in
1768 # Darwin crosses can use the host system's libraries and headers,
1769 # because of the fat library support. Of course, it must be the
1770 # same version of Darwin on both sides. Allow the user to
1771 # just say --target=foo-darwin without a version number to mean
1772 # "the version on this system".
1773 *-*-darwin*,*-*-darwin*)
1774 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1775 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1776 if test $hostos = $targetos -o $targetos = darwin ; then
1778 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1783 i?86-*-*,x86_64-*-* \
1784 | powerpc*-*-*,powerpc64*-*-*)
1785 CROSS="$CROSS -DNATIVE_CROSS" ;;
1790 if test "x$with_headers" = x; then
1797 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1798 SYSTEM_HEADER_DIR=$build_system_header_dir
1801 # If this is a cross-compiler that does not
1802 # have its own set of headers then define
1805 # If this is using newlib, without having the headers available now,
1806 # then define inhibit_libc in LIBGCC2_CFLAGS.
1807 # This prevents libgcc2 from containing any code which requires libc
1809 : ${inhibit_libc=false}
1810 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1811 test x$with_newlib = xyes ; } &&
1812 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1815 AC_SUBST(inhibit_libc)
1817 # When building gcc with a cross-compiler, we need to adjust things so
1818 # that the generator programs are still built with the native compiler.
1819 # Also, we cannot run fixincludes.
1821 # These are the normal (build=host) settings:
1822 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1823 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1824 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1825 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1827 # And these apply if build != host, or we are generating coverage data
1828 if test x$build != x$host || test "x$coverage_flags" != x
1830 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1831 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1834 # Expand extra_headers to include complete path.
1835 # This substitutes for lots of t-* files.
1837 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1838 for file in ${extra_headers} ; do
1839 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1842 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1843 if test x"$use_gcc_tgmath" = xyes
1844 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1847 # Define collect2 in Makefile.
1848 case $host_can_use_collect2 in
1850 *) collect2='collect2$(exeext)' ;;
1852 AC_SUBST([collect2])
1854 # Add a definition of USE_COLLECT2 if system wants one.
1855 case $use_collect2 in
1856 no) use_collect2= ;;
1859 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1860 xm_defines="${xm_defines} USE_COLLECT2"
1861 case $host_can_use_collect2 in
1863 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1869 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1870 [Define to the name of the LTO plugin DSO that must be
1871 passed to the linker's -plugin=LIB option.])
1873 # ---------------------------
1874 # Assembler & linker features
1875 # ---------------------------
1877 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1878 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1879 # However when ld-new is first executed from the build tree, libtool will
1880 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1881 # to the build tree. While doing this we need to use the previous-stage
1882 # linker, or we have an infinite loop. The presence of a shell script as
1883 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1884 # the gcc/collect-ld script. So we need to know how libtool works, or
1885 # exec-tool will fail.
1887 m4_defun([_LT_CONFIG_COMMANDS], [])
1890 AC_SUBST(enable_fast_install)
1892 # Identify the assembler which will work hand-in-glove with the newly
1893 # built GCC, so that we can examine its features. This is the assembler
1894 # which will be driven by the driver program.
1896 # If build != host, and we aren't building gas in-tree, we identify a
1897 # build->target assembler and hope that it will have the same features
1898 # as the host->target assembler we'll be using.
1899 gcc_cv_gas_major_version=
1900 gcc_cv_gas_minor_version=
1901 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1903 m4_pattern_allow([AS_FOR_TARGET])dnl
1904 AS_VAR_SET_IF(gcc_cv_as,, [
1905 if test -x "$DEFAULT_ASSEMBLER"; then
1906 gcc_cv_as="$DEFAULT_ASSEMBLER"
1907 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1908 && test -f ../gas/Makefile \
1909 && test x$build = x$host; then
1910 gcc_cv_as=../gas/as-new$build_exeext
1911 elif test -x as$build_exeext; then
1912 # Build using assembler in the current directory.
1913 gcc_cv_as=./as$build_exeext
1914 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1915 gcc_cv_as="$AS_FOR_TARGET"
1917 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1920 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1921 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1922 case "$ORIGINAL_AS_FOR_TARGET" in
1923 ./as | ./as$build_exeext) ;;
1924 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1927 AC_MSG_CHECKING(what assembler to use)
1928 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1929 # Single tree build which includes gas. We want to prefer it
1930 # over whatever linker top-level may have detected, since
1931 # we'll use what we're building after installation anyway.
1932 AC_MSG_RESULT(newly built gas)
1934 _gcc_COMPUTE_GAS_VERSION
1935 in_tree_gas_is_elf=no
1936 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1937 || (grep 'obj_format = multi' ../gas/Makefile \
1938 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1940 in_tree_gas_is_elf=yes
1943 AC_MSG_RESULT($gcc_cv_as)
1947 # Identify the linker which will work hand-in-glove with the newly
1948 # built GCC, so that we can examine its features. This is the linker
1949 # which will be driven by the driver program.
1951 # If build != host, and we aren't building gas in-tree, we identify a
1952 # build->target linker and hope that it will have the same features
1953 # as the host->target linker we'll be using.
1954 gcc_cv_gld_major_version=
1955 gcc_cv_gld_minor_version=
1956 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1957 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1959 AS_VAR_SET_IF(gcc_cv_ld,, [
1960 if test -x "$DEFAULT_LINKER"; then
1961 gcc_cv_ld="$DEFAULT_LINKER"
1962 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1963 && test -f ../ld/Makefile \
1964 && test x$build = x$host; then
1965 gcc_cv_ld=../ld/ld-new$build_exeext
1966 elif test -x collect-ld$build_exeext; then
1967 # Build using linker in the current directory.
1968 gcc_cv_ld=./collect-ld$build_exeext
1969 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
1970 gcc_cv_ld="$LD_FOR_TARGET"
1972 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1975 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1976 PLUGIN_LD=`basename $gcc_cv_ld`
1977 AC_ARG_WITH(plugin-ld,
1978 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
1979 [if test x"$withval" != x; then
1980 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1981 PLUGIN_LD="$withval"
1983 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1984 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1986 # Check to see if we are using gold instead of ld
1987 AC_MSG_CHECKING(whether we are using gold)
1989 if test x$gcc_cv_ld != x; then
1990 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
1991 | grep "GNU gold" > /dev/null; then
1995 AC_MSG_RESULT($ld_is_gold)
1997 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1998 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1999 case "$ORIGINAL_LD_FOR_TARGET" in
2000 ./collect-ld | ./collect-ld$build_exeext) ;;
2001 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2004 AC_MSG_CHECKING(what linker to use)
2005 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2006 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2007 # Single tree build which includes ld. We want to prefer it
2008 # over whatever linker top-level may have detected, since
2009 # we'll use what we're building after installation anyway.
2010 AC_MSG_RESULT(newly built ld)
2012 in_tree_ld_is_elf=no
2013 if (grep 'EMUL = .*elf' ../ld/Makefile \
2014 || grep 'EMUL = .*linux' ../ld/Makefile \
2015 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2016 in_tree_ld_is_elf=yes
2017 elif test "$ld_is_gold" = yes; then
2018 in_tree_ld_is_elf=yes
2020 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
2023 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
2024 if test x$gcc_cv_gld_version != x; then
2028 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2029 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2032 AC_MSG_RESULT($gcc_cv_ld)
2036 # Figure out what nm we will be using.
2037 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2038 AS_VAR_SET_IF(gcc_cv_nm,, [
2039 if test -f $gcc_cv_binutils_srcdir/configure.in \
2040 && test -f ../binutils/Makefile \
2041 && test x$build = x$host; then
2042 gcc_cv_nm=../binutils/nm-new$build_exeext
2043 elif test -x nm$build_exeext; then
2044 gcc_cv_nm=./nm$build_exeext
2045 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2046 gcc_cv_nm="$NM_FOR_TARGET"
2048 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2051 AC_MSG_CHECKING(what nm to use)
2052 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2053 # Single tree build which includes binutils.
2054 AC_MSG_RESULT(newly built nm)
2057 AC_MSG_RESULT($gcc_cv_nm)
2061 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2062 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2063 case "$ORIGINAL_NM_FOR_TARGET" in
2064 ./nm | ./nm$build_exeext) ;;
2065 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2069 # Figure out what objdump we will be using.
2070 AS_VAR_SET_IF(gcc_cv_objdump,, [
2071 if test -f $gcc_cv_binutils_srcdir/configure.in \
2072 && test -f ../binutils/Makefile \
2073 && test x$build = x$host; then
2074 # Single tree build which includes binutils.
2075 gcc_cv_objdump=../binutils/objdump$build_exeext
2076 elif test -x objdump$build_exeext; then
2077 gcc_cv_objdump=./objdump$build_exeext
2078 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2079 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2081 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2084 AC_MSG_CHECKING(what objdump to use)
2085 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2086 # Single tree build which includes binutils.
2087 AC_MSG_RESULT(newly built objdump)
2088 elif test x$gcc_cv_objdump = x; then
2089 AC_MSG_RESULT(not found)
2091 AC_MSG_RESULT($gcc_cv_objdump)
2094 # Figure out what readelf we will be using.
2095 AS_VAR_SET_IF(gcc_cv_readelf,, [
2096 if test -f $gcc_cv_binutils_srcdir/configure.in \
2097 && test -f ../binutils/Makefile \
2098 && test x$build = x$host; then
2099 # Single tree build which includes binutils.
2100 gcc_cv_readelf=../binutils/readelf$build_exeext
2101 elif test -x readelf$build_exeext; then
2102 gcc_cv_readelf=./readelf$build_exeext
2104 AC_PATH_PROG(gcc_cv_readelf, readelf)
2107 AC_MSG_CHECKING(what readelf to use)
2108 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2109 # Single tree build which includes binutils.
2110 AC_MSG_RESULT(newly built readelf)
2111 elif test x$gcc_cv_readelf = x; then
2112 AC_MSG_RESULT(not found)
2114 AC_MSG_RESULT($gcc_cv_readelf)
2117 # Figure out what assembler alignment features are present.
2118 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2122 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2123 [Define if your assembler supports .balign and .p2align.])])
2125 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2128 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2129 [Define if your assembler supports specifying the maximum number
2130 of bytes to skip when using the GAS .p2align command.])])
2132 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2135 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2136 [Define if your assembler supports .literal16.])])
2138 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2140 [conftest_label1: .word 0
2142 conftest_label2: .word 0
2144 [if test x$gcc_cv_nm != x; then
2145 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2146 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2147 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2149 else gcc_cv_as_subsection_m1=yes
2151 rm -f conftest.nm1 conftest.nm2
2153 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2154 [Define if your assembler supports .subsection and .subsection -1 starts
2155 emitting at the beginning of your section.])])
2157 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2160 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2162 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2164 [ .weakref foobar, barfnot],,
2165 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2167 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2170 .NSUBSPA $CODE$,COMDAT],,
2171 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2173 # .hidden needs to be supported in both the assembler and the linker,
2174 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2175 # This is irritatingly difficult to feature test for; we have to check the
2176 # date string after the version number. If we've got an in-tree
2177 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2179 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2180 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2184 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2185 # STV_HIDDEN, so disable .hidden support if so.
2187 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2188 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2189 cat > conftest.s <<EOF
2196 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2197 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2198 grep '\.hidden default' > /dev/null; then
2201 gcc_cv_as_hidden=yes
2204 # Assume bug is present if objdump is missing.
2209 gcc_cv_as_hidden=yes
2214 # Darwin as has some visibility support, though with a different syntax.
2215 gcc_cv_as_hidden=yes
2219 # gnu_indirect_function type is an extension proposed at
2220 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2221 # selection of function implementation
2222 AC_ARG_ENABLE(gnu-indirect-function,
2223 [AS_HELP_STRING([--enable-gnu-indirect-function],
2224 [enable the use of the @gnu_indirect_function to glibc systems])],
2225 [case $enable_gnu_indirect_function in
2227 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2228 Valid choices are 'yes' and 'no'.]) ;;
2230 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2231 if test x$enable_gnu_indirect_function = xyes; then
2232 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2233 [Define if your system supports gnu indirect functions.])
2237 if test $in_tree_ld != yes ; then
2238 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2239 if echo "$ld_ver" | grep GNU > /dev/null; then
2240 if test x"$ld_is_gold" = xyes; then
2241 # GNU gold --version looks like this:
2243 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2245 # We extract the binutils version which is more familiar and specific
2246 # than the gold version.
2247 ld_vers=`echo $ld_ver | sed -n \
2248 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2250 # GNU ld --version looks like this:
2252 # GNU ld (GNU Binutils) 2.21.51.20110225
2253 ld_vers=`echo $ld_ver | sed -n \
2254 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2256 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2257 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2258 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2259 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2264 # Solaris 2 ld -V output looks like this for a regular version:
2266 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2268 # but test versions add stuff at the end:
2270 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2272 ld_ver=`$gcc_cv_ld -V 2>&1`
2273 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2274 ld_vers=`echo $ld_ver | sed -n \
2275 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2276 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2277 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2285 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2286 [[if test $in_tree_ld = yes ; then
2288 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2289 && test $in_tree_ld_is_elf = yes; then
2290 gcc_cv_ld_hidden=yes
2293 gcc_cv_ld_hidden=yes
2294 if test x"$ld_is_gold" = xyes; then
2296 elif echo "$ld_ver" | grep GNU > /dev/null; then
2297 if test 0"$ld_date" -lt 20020404; then
2298 if test -n "$ld_date"; then
2299 # If there was date string, but was earlier than 2002-04-04, fail
2301 elif test -z "$ld_vers"; then
2302 # If there was no date string nor ld version number, something is wrong
2305 test -z "$ld_vers_patch" && ld_vers_patch=0
2306 if test "$ld_vers_major" -lt 2; then
2308 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2309 gcc_cv_ld_hidden="no"
2310 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2318 # Darwin ld has some visibility support.
2319 gcc_cv_ld_hidden=yes
2321 hppa64*-*-hpux* | ia64*-*-hpux*)
2322 gcc_cv_ld_hidden=yes
2325 # .hidden support was backported to Solaris 8, starting with ld
2327 if test "$ld_vers_minor" -ge 276; then
2328 gcc_cv_ld_hidden=yes
2333 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2334 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2335 # .symbolic was only added in Solaris 9 12/02.
2336 gcc_cv_ld_hidden=yes
2344 libgcc_visibility=no
2345 AC_SUBST(libgcc_visibility)
2346 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2347 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2348 libgcc_visibility=yes
2349 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2350 [Define if your assembler and linker support .hidden.])
2353 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2354 gcc_cv_ld_ro_rw_mix=unknown
2355 if test $in_tree_ld = yes ; then
2356 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2357 && test $in_tree_ld_is_elf = yes; then
2358 gcc_cv_ld_ro_rw_mix=read-write
2360 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2361 echo '.section myfoosect, "a"' > conftest1.s
2362 echo '.section myfoosect, "aw"' > conftest2.s
2363 echo '.byte 1' >> conftest2.s
2364 echo '.section myfoosect, "a"' > conftest3.s
2365 echo '.byte 0' >> conftest3.s
2366 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2367 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2368 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2369 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2370 conftest2.o conftest3.o > /dev/null 2>&1; then
2371 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2372 | sed -e '/myfoosect/!d' -e N`
2373 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2374 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2375 gcc_cv_ld_ro_rw_mix=read-only
2377 gcc_cv_ld_ro_rw_mix=read-write
2382 rm -f conftest.* conftest[123].*
2385 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2386 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2387 [Define if your linker links a mix of read-only
2388 and read-write sections into a read-write section.])
2390 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2392 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2393 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2401 [[# GAS versions before 2.11 do not support uleb128,
2402 # despite appearing to.
2403 # ??? There exists an elf-specific test that will crash
2404 # the assembler. Perhaps it's better to figure out whether
2405 # arbitrary sections are supported and try the test.
2406 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2407 if echo "$as_ver" | grep GNU > /dev/null; then
2408 as_vers=`echo $as_ver | sed -n \
2409 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2410 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2411 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2412 if test $as_major -eq 2 && test $as_minor -lt 11
2414 else gcc_cv_as_leb128=yes
2417 [AC_DEFINE(HAVE_AS_LEB128, 1,
2418 [Define if your assembler supports .sleb128 and .uleb128.])])
2420 # Check if we have assembler support for unwind directives.
2421 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2428 .cfi_escape 1, 2, 3, 4, 5
2432 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2433 # read-only and read-write sections, we need to make sure that the
2434 # assembler used emits read-write .eh_frame sections.
2435 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2436 if test "x$gcc_cv_objdump" != x; then
2437 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2438 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2439 gcc_cv_as_cfi_directive=no
2442 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2443 # On Solaris/x86, make sure that GCC and gas agree on using
2444 # read-only .eh_frame sections for 64-bit.
2445 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2446 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2447 sed -e /.eh_frame/!d -e N | \
2448 grep READONLY > /dev/null; then
2449 gcc_cv_as_cfi_directive=yes
2451 gcc_cv_as_cfi_directive=no
2455 gcc_cv_as_cfi_directive=yes
2460 # no objdump, err on the side of caution
2461 gcc_cv_as_cfi_directive=no
2464 gcc_cv_as_cfi_directive=yes
2468 gcc_cv_as_cfi_directive=yes
2471 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2472 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2476 .cfi_adjust_cfa_offset 64
2478 .cfi_adjust_cfa_offset 128
2481 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2482 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2483 gcc_cv_as_cfi_advance_working=yes
2487 # no objdump, err on the side of caution
2488 gcc_cv_as_cfi_advance_working=no
2490 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2491 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2492 [`if test $gcc_cv_as_cfi_directive = yes \
2493 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2494 [Define 0/1 if your assembler supports CFI directives.])
2496 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2497 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2498 gcc_cv_as_cfi_personality_directive, ,,
2501 .cfi_personality 0, symbol
2503 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2504 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2505 then echo 1; else echo 0; fi`],
2506 [Define 0/1 if your assembler supports .cfi_personality.])
2508 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2509 gcc_cv_as_cfi_sections_directive, ,,
2511 .cfi_sections .debug_frame, .eh_frame
2515 win32 | pe | cygwin* | mingw32* | uwin*)
2516 # Need to check that we generated the correct relocation for the
2517 # .debug_frame section. This was fixed for binutils 2.21.
2518 gcc_cv_as_cfi_sections_directive=no
2519 if test "x$gcc_cv_objdump" != x; then
2520 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2521 grep secrel > /dev/null; then
2522 gcc_cv_as_cfi_sections_directive=yes
2527 gcc_cv_as_cfi_sections_directive=yes
2530 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2531 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2532 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2533 then echo 1; else echo 0; fi`],
2534 [Define 0/1 if your assembler supports .cfi_sections.])
2536 # GAS versions up to and including 2.11.0 may mis-optimize
2538 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2546 .section .eh_frame,"aw",@progbits
2548 .4byte .LECIE1-.LSCIE1
2562 .4byte .LEFDE1-.LASFDE1
2564 .4byte .LASFDE1-__FRAME_BEGIN__
2572 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2573 cat > conftest.lit <<EOF
2574 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2575 0010 01000000 12000000 18000000 00000000 ................
2576 0020 08000000 04080000 0044 .........D @&t@
2578 cat > conftest.big <<EOF
2579 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2580 0010 00000001 00000012 00000018 00000000 ................
2581 0020 00000008 04000000 0844 .........D @&t@
2583 # If the assembler didn't choke, and we can objdump,
2584 # and we got the correct data, then succeed.
2585 # The text in the here-document typically retains its unix-style line
2586 # endings, while the output of objdump will use host line endings.
2587 # Therefore, use diff -b for the comparisons.
2588 if test x$gcc_cv_objdump != x \
2589 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2590 | tail -3 > conftest.got \
2591 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2592 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2594 gcc_cv_as_eh_frame=yes
2595 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2596 gcc_cv_as_eh_frame=buggy
2598 # Uh oh, what do we do now?
2599 gcc_cv_as_eh_frame=no
2602 if test $gcc_cv_as_eh_frame = buggy; then
2603 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2604 [Define if your assembler mis-optimizes .eh_frame data.])
2607 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2608 [elf,2,12,0], [--fatal-warnings],
2609 [.section .rodata.str, "aMS", @progbits, 1])
2610 if test $gcc_cv_as_shf_merge = no; then
2611 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2612 [elf,2,12,0], [--fatal-warnings],
2613 [.section .rodata.str, "aMS", %progbits, 1])
2615 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2616 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2617 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2619 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2620 gcc_cv_as_comdat_group,
2621 [elf,2,16,0], [--fatal-warnings],
2622 [.section .text,"axG",@progbits,.foo,comdat])
2623 if test $gcc_cv_as_comdat_group = yes; then
2624 gcc_cv_as_comdat_group_percent=no
2625 gcc_cv_as_comdat_group_group=no
2627 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2628 gcc_cv_as_comdat_group_percent,
2629 [elf,2,16,0], [--fatal-warnings],
2630 [.section .text,"axG",%progbits,.foo,comdat])
2631 if test $gcc_cv_as_comdat_group_percent = yes; then
2632 gcc_cv_as_comdat_group_group=no
2635 # Sun as uses a completely different syntax.
2640 .group foo,".text%foo",#comdat
2641 .section ".text%foo", #alloc,#execinstr,#progbits
2646 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2648 .group foo,.text%foo,#comdat
2649 .section .text%foo, "ax", @progbits
2655 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2656 gcc_cv_as_comdat_group_group,
2662 if test x"$ld_is_gold" = xyes; then
2664 elif test $in_tree_ld = yes ; then
2666 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2667 && test $in_tree_ld_is_elf = yes; then
2670 elif echo "$ld_ver" | grep GNU > /dev/null; then
2672 if test 0"$ld_date" -lt 20050308; then
2673 if test -n "$ld_date"; then
2674 # If there was date string, but was earlier than 2005-03-08, fail
2676 elif test "$ld_vers_major" -lt 2; then
2678 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2685 *-*-solaris2.1[1-9]*)
2687 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2688 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2691 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2692 # least ld version 1.2267.
2693 if test "$ld_vers_major" -gt 1; then
2695 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2697 elif test "$ld_vers_minor" -ge 2267; then
2702 # Assume linkers other than GNU ld don't support COMDAT group.
2708 # Allow overriding the automatic COMDAT group tests above.
2709 AC_ARG_ENABLE(comdat,
2710 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2711 [comdat_group="$enable_comdat"])
2712 if test $comdat_group = no; then
2713 gcc_cv_as_comdat_group=no
2714 gcc_cv_as_comdat_group_percent=no
2715 gcc_cv_as_comdat_group_group=no
2717 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2718 [`if test $gcc_cv_as_comdat_group = yes \
2719 || test $gcc_cv_as_comdat_group_percent = yes \
2720 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2721 [Define 0/1 if your assembler and linker support COMDAT groups.])
2723 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2724 gcc_cv_as_discriminator,
2728 .loc 1 1 0 discriminator 1],,
2729 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2730 [Define if your assembler supports the .loc discriminator sub-directive.])])
2732 # Thread-local storage - the check is heavily parameterized.
2741 .section ".tdata","awT",@progbits
2744 ldq $27,__tls_get_addr($29) !literal!1
2745 lda $16,foo($29) !tlsgd!1
2746 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2747 ldq $27,__tls_get_addr($29) !literal!2
2748 lda $16,foo($29) !tlsldm!2
2749 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2750 ldq $1,foo($29) !gotdtprel
2751 ldah $2,foo($29) !dtprelhi
2752 lda $3,foo($2) !dtprello
2753 lda $4,foo($29) !dtprel
2754 ldq $1,foo($29) !gottprel
2755 ldah $2,foo($29) !tprelhi
2756 lda $3,foo($2) !tprello
2757 lda $4,foo($29) !tprel'
2760 tls_as_opt=--fatal-warnings
2762 cris-*-*|crisv32-*-*)
2764 .section ".tdata","awT",@progbits
2771 tls_as_opt=--fatal-warnings
2775 .section ".tdata","awT",@progbits
2787 .section ".tdata","awT",@progbits
2791 addil LT%foo-$tls_gdidx$,gp
2792 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2795 addil LT%foo-$tls_ldidx$,gp
2797 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2798 addil LR%foo-$tls_dtpoff$,%ret0
2799 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2801 addil LT%foo-$tls_ieoff$,gp
2802 ldw RT%foo-$tls_ieoff$(%r1),%t2
2805 addil LR%foo-$tls_leoff$,%t1
2806 ldo RR%foo-$tls_leoff$(%r1),%t2'
2809 tls_as_opt=--fatal-warnings
2813 .section ".tdata","awT",%progbits
2824 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2826 i[34567]86-*-solaris2.*)
2828 tga_func=___tls_get_addr
2830 x86_64-*-solaris2.1[0-9]*)
2832 tga_func=__tls_get_addr
2838 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2840 .section .tdata,"awt",@progbits'
2844 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2845 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2849 .section ".tdata","awT",@progbits'
2852 tls_as_opt="--fatal-warnings"
2854 conftest_s="$conftest_s
2858 leal foo@tlsgd(,%ebx,1), %eax
2859 leal foo@tlsldm(%ebx), %eax
2860 leal foo@dtpoff(%eax), %edx
2861 movl foo@gottpoff(%ebx), %eax
2862 subl foo@gottpoff(%ebx), %eax
2863 addl foo@gotntpoff(%ebx), %eax
2864 movl foo@indntpoff, %eax
2865 movl \$foo@tpoff, %eax
2866 subl \$foo@tpoff, %eax
2867 leal foo@ntpoff(%ecx), %eax"
2871 .section ".tdata","awT",@progbits
2875 leaq foo@TLSGD(%rip), %rdi
2876 leaq foo@TLSLD(%rip), %rdi
2877 leaq foo@DTPOFF(%rax), %rdx
2878 movq foo@GOTTPOFF(%rip), %rax
2879 movq $foo@TPOFF, %rax'
2882 tls_as_opt=--fatal-warnings
2886 .section ".tdata","awT",@progbits
2889 addl r16 = @ltoff(@dtpmod(foo#)), gp
2890 addl r17 = @ltoff(@dtprel(foo#)), gp
2891 addl r18 = @ltoff(@tprel(foo#)), gp
2892 addl r19 = @dtprel(foo#), gp
2893 adds r21 = @dtprel(foo#), r13
2894 movl r23 = @dtprel(foo#)
2895 addl r20 = @tprel(foo#), gp
2896 adds r22 = @tprel(foo#), r13
2897 movl r24 = @tprel(foo#)'
2900 tls_as_opt=--fatal-warnings
2904 .section .tdata,"awT",@progbits
2908 addiu $4, $28, %tlsgd(x)
2909 addiu $4, $28, %tlsldm(x)
2910 lui $4, %dtprel_hi(x)
2911 addiu $4, $4, %dtprel_lo(x)
2912 lw $4, %gottprel(x)($28)
2913 lui $4, %tprel_hi(x)
2914 addiu $4, $4, %tprel_lo(x)'
2917 tls_as_opt='-32 --fatal-warnings'
2921 .section .tdata,"awT",@progbits
2926 move.l x@TLSGD(%a5),%a0
2927 move.l x@TLSLDM(%a5),%a0
2928 move.l x@TLSLDO(%a5),%a0
2929 move.l x@TLSIE(%a5),%a0
2930 move.l x@TLSLE(%a5),%a0'
2933 tls_as_opt='--fatal-warnings'
2937 .section ".tdata","awT",@progbits
2945 addi 3,31,ld0@got@tlsgd
2947 addi 3,31,x1@got@tlsld
2950 addis 9,3,x2@dtprel@ha
2951 addi 9,9,x2@dtprel@l
2952 lwz 9,x3@got@tprel(31)
2955 addis 9,2,x2@tprel@ha
2956 addi 9,9,x2@tprel@l'
2959 tls_as_opt="-a32 --fatal-warnings"
2963 .section ".tdata","awT",@progbits
2971 addi 3,2,ld0@got@tlsgd
2977 addi 3,2,x1@got@tlsld
2983 addis 9,3,x2@dtprel@ha
2984 addi 9,9,x2@dtprel@l
2987 ld 9,x3@got@dtprel(2)
2993 tls_as_opt="-a64 --fatal-warnings"
2997 .section ".tdata","awT",@progbits
3006 l %r1,foo@GOTNTPOFF(%r12)
3007 l %r1,0(%r1):tls_load:foo
3008 bas %r14,0(%r1,%r13):tls_gdcall:foo
3009 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3012 tls_as_opt="-m31 --fatal-warnings"
3016 .section ".tdata","awT",@progbits
3024 lg %r1,foo@GOTNTPOFF(%r12)
3025 larl %r1,foo@INDNTPOFF
3026 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3027 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3030 tls_as_opt="-m64 -Aesame --fatal-warnings"
3032 sh-*-* | sh[34]-*-*)
3034 .section ".tdata","awT",@progbits
3044 tls_as_opt=--fatal-warnings
3048 sparc*-sun-solaris2.*)
3050 tga_func=__tls_get_addr
3056 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3058 .section ".tdata",#alloc,#write,#tls'
3063 .section ".tdata","awT",@progbits'
3066 tls_as_opt="-32 --fatal-warnings"
3068 conftest_s="$conftest_s
3071 sethi %tgd_hi22(foo), %o0
3072 add %o0, %tgd_lo10(foo), %o1
3073 add %l7, %o1, %o0, %tgd_add(foo)
3074 call __tls_get_addr, %tgd_call(foo)
3075 sethi %tldm_hi22(foo), %l1
3076 add %l1, %tldm_lo10(foo), %l2
3077 add %l7, %l2, %o0, %tldm_add(foo)
3078 call __tls_get_addr, %tldm_call(foo)
3079 sethi %tldo_hix22(foo), %l3
3080 xor %l3, %tldo_lox10(foo), %l4
3081 add %o0, %l4, %l5, %tldo_add(foo)
3082 sethi %tie_hi22(foo), %o3
3083 add %o3, %tie_lo10(foo), %o3
3084 ld [%l7 + %o3], %o2, %tie_ld(foo)
3085 add %g7, %o2, %o4, %tie_add(foo)
3086 sethi %tle_hix22(foo), %l1
3087 xor %l1, %tle_lox10(foo), %o5
3088 ld [%g7 + %o5], %o1"
3092 .section ".tdata","awT",@progbits
3095 movi a8, foo@TLSFUNC
3096 movi a10, foo@TLSARG
3097 callx8.tls a8, foo@TLSCALL'
3104 if test "x$enable_tls" = xno ; then
3105 : # TLS explicitly disabled.
3106 elif test "x$enable_tls" = xyes ; then
3107 set_have_as_tls=yes # TLS explicitly enabled.
3108 elif test -z "$tls_first_major"; then
3109 : # If we don't have a check, assume no support.
3111 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3112 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3113 [set_have_as_tls=yes])
3117 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3118 # with TLS support are in use, native TLS cannot work.
3122 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3123 # gld with TLS support are in use, native TLS cannot work.
3126 # TLS was introduced in the Solaris 9 FCS release and backported to
3127 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3128 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3129 # ld and GCC don't support any longer.
3131 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3133 # Check ld and ld.so.1 TLS support.
3134 if echo "$ld_ver" | grep GNU > /dev/null; then
3135 # Assume all interesting versions of GNU ld have TLS support.
3136 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3140 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3142 min_tls_ld_vers_minor=280
3144 # Solaris 8/SPARC ld has TLS support since version 1.272.
3145 sparc*-*-solaris2.8)
3146 min_tls_ld_vers_minor=272
3148 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3150 min_tls_ld_vers_minor=374
3152 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3153 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3154 min_tls_ld_vers_minor=343
3157 if test "$ld_vers_major" -gt 1 || \
3158 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3164 AC_MSG_RESULT($ld_tls_support)
3167 save_LDFLAGS="$LDFLAGS"
3171 AC_MSG_CHECKING(alternate thread library)
3173 # TLS support was backported to Solaris 8 patches, but only lives in
3174 # the alternate thread library which became the default in Solaris 9.
3175 # We want to always use that, irrespective of TLS support.
3177 # Take multilib subdir into account. There's no spec to handle
3178 # this. The 64 symlink exists since Solaris 8.
3179 lwp_dir=/usr/lib/lwp
3180 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3181 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3188 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3189 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3190 [Define to the linker flags to use for -pthread.])
3191 AC_MSG_RESULT($lwp_dir)
3193 AC_MSG_CHECKING(library containing $tga_func)
3194 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3195 # (32-bit x86) only lived in libthread, so check for that. Keep
3196 # set_have_as_tls if found, disable if not.
3197 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3198 # Clear LIBS if we cannot support TLS.
3199 if test $set_have_as_tls = no; then
3202 # Always define LIB_TLS_SPEC, even without TLS support.
3203 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3204 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3205 AC_MSG_RESULT($LIBS)
3208 LDFLAGS="$save_LDFLAGS"
3211 if test $set_have_as_tls = yes ; then
3212 AC_DEFINE(HAVE_AS_TLS, 1,
3213 [Define if your assembler and linker support thread-local storage.])
3216 # Target-specific assembler checks.
3218 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3219 gcc_cv_ld_static_dynamic=no
3220 gcc_cv_ld_static_option='-Bstatic'
3221 gcc_cv_ld_dynamic_option='-Bdynamic'
3222 if test $in_tree_ld = yes ; then
3223 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3224 gcc_cv_ld_static_dynamic=yes
3226 elif test x$gcc_cv_ld != x; then
3227 # Check if linker supports -Bstatic/-Bdynamic option
3228 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3229 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3230 gcc_cv_ld_static_dynamic=yes
3233 # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic.
3235 gcc_cv_ld_static_dynamic=yes
3236 gcc_cv_ld_static_option="-noso"
3237 gcc_cv_ld_dynamic_option="-so_archive"
3239 # IRIX 6 ld supports -Bstatic/-Bdynamic.
3241 gcc_cv_ld_static_dynamic=yes
3243 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3245 gcc_cv_ld_static_dynamic=yes
3250 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3251 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3252 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3253 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3254 [Define to the linker option to disable use of shared objects.])
3255 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3256 [Define to the linker option to enable use of shared objects.])
3258 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3260 if test x"$demangler_in_ld" = xyes; then
3261 AC_MSG_CHECKING(linker --demangle support)
3262 gcc_cv_ld_demangle=no
3263 if test $in_tree_ld = yes; then
3264 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3265 gcc_cv_ld_demangle=yes
3267 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3268 # Check if the GNU linker supports --demangle option
3269 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3270 gcc_cv_ld_demangle=yes
3273 if test x"$gcc_cv_ld_demangle" = xyes; then
3274 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3275 [Define if your linker supports --demangle option.])
3277 AC_MSG_RESULT($gcc_cv_ld_demangle)
3280 AC_MSG_CHECKING(linker plugin support)
3282 if test -f liblto_plugin.la; then
3283 save_ld_ver="$ld_ver"
3284 save_ld_vers_major="$ld_vers_major"
3285 save_ld_vers_minor="$ld_vers_minor"
3286 save_ld_is_gold="$ld_is_gold"
3290 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3292 # FIXME: ld_is_gold?
3293 ld_vers_major="$gcc_cv_gld_major_version"
3294 ld_vers_minor="$gcc_cv_gld_minor_version"
3296 # Determine plugin linker version.
3297 # FIXME: Partial duplicate from above, generalize.
3299 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3300 if echo "$ld_ver" | grep GNU > /dev/null; then
3301 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3303 ld_vers=`echo $ld_ver | sed -n \
3304 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3306 ld_vers=`echo $ld_ver | sed -n \
3307 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3309 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3310 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3315 # Determine plugin support.
3316 if echo "$ld_ver" | grep GNU > /dev/null; then
3317 # Require GNU ld or gold 2.21+ for plugin support by default.
3318 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3320 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3321 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3326 ld_ver="$save_ld_ver"
3327 ld_vers_major="$save_ld_vers_major"
3328 ld_vers_minor="$save_ld_vers_minor"
3329 ld_is_gold="$save_ld_is_gold"
3331 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3332 [Define to the level of your linker's plugin support.])
3333 AC_MSG_RESULT($gcc_cv_lto_plugin)
3336 # All TARGET_ABI_OSF targets.
3337 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3338 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3339 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3342 extbl $3, $2, $3 !lituse_bytoff!1
3343 ldq $2, a($29) !literal!1
3344 ldq $4, b($29) !literal!2
3345 ldq_u $3, 0($2) !lituse_base!1
3346 ldq $27, f($29) !literal!5
3347 jsr $26, ($27), f !lituse_jsr!5
3348 ldah $29, 0($26) !gpdisp!3
3349 lda $0, c($29) !gprel
3350 ldah $1, d($29) !gprelhigh
3351 lda $1, d($1) !gprellow
3352 lda $29, 0($29) !gpdisp!3],,
3353 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3354 [Define if your assembler supports explicit relocations.])])
3355 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3356 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3359 ldq $27, a($29) !literal!1
3360 jsr $26, ($27), a !lituse_jsrdirect!1],,
3361 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3362 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3366 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3367 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3368 [-no-mul-bug-abort], [.text],,
3369 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3370 [Define if your assembler supports the -no-mul-bug-abort option.])])
3374 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3375 [.register %g2, #scratch],,
3376 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3377 [Define if your assembler supports .register.])])
3379 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3381 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3382 [Define if your assembler supports -relax option.])])
3384 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3385 gcc_cv_as_sparc_gotdata_op,,
3392 sethi %gdop_hix22(foo), %g1
3393 xor %g1, %gdop_lox10(foo), %g1
3394 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3395 [if test x$gcc_cv_ld != x \
3396 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3397 if test x$gcc_cv_objdump != x; then
3398 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3399 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3400 gcc_cv_as_sparc_gotdata_op=no
3402 gcc_cv_as_sparc_gotdata_op=yes
3407 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3408 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3410 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3411 gcc_cv_as_sparc_ua_pcrel,,
3419 .uaword %r_disp32(foo)],
3420 [if test x$gcc_cv_ld != x \
3421 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3422 gcc_cv_as_sparc_ua_pcrel=yes
3425 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3426 [Define if your assembler and linker support unaligned PC relative relocs.])
3428 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3429 gcc_cv_as_sparc_ua_pcrel_hidden,,
3434 .uaword %r_disp32(foo)
3435 .byte 0x32, 0x33, 0x34
3440 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3441 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3442 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3443 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3444 if $gcc_cv_objdump -R conftest 2> /dev/null \
3445 | grep 'DISP32' > /dev/null 2>&1; then
3448 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3452 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3453 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3454 ]) # unaligned pcrel relocs
3456 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3457 gcc_cv_as_sparc_offsetable_lo10,,
3460 or %g1, %lo(ab) + 12, %g1
3461 or %g1, %lo(ab + 12), %g1],
3462 [if test x$gcc_cv_objdump != x \
3463 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3464 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3465 gcc_cv_as_sparc_offsetable_lo10=yes
3467 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3468 [Define if your assembler supports offsetable %lo().])])
3472 i[34567]86-*-* | x86_64-*-*)
3476 # Full C++ conformance when using a shared libstdc++-v3 requires some
3477 # support from the Cygwin DLL, which in more recent versions exports
3478 # wrappers to aid in interposing and redirecting operators new, delete,
3479 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3480 # are configuring for a version of Cygwin that exports the wrappers.
3481 if test x$host = x$target; then
3482 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3484 # Can't check presence of libc functions during cross-compile, so
3485 # we just have to assume we're building for an up-to-date target.
3486 gcc_ac_cygwin_dll_wrappers=yes
3488 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3489 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3490 [Define if you want to generate code by default that assumes that the
3491 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3494 cygwin* | pe | mingw32*)
3495 # Recent binutils allows the three-operand form of ".comm" on PE. This
3496 # definition is used unconditionally to initialise the default state of
3497 # the target option variable that governs usage of the feature.
3498 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3499 [2,19,52],,[.comm foo,1,32])
3500 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3501 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3502 [Define if your assembler supports specifying the alignment
3503 of objects allocated using the GAS .comm command.])
3504 # Used for DWARF 2 in PE
3505 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3506 gcc_cv_as_ix86_pe_secrel32,
3512 [if test x$gcc_cv_ld != x \
3513 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3514 gcc_cv_as_ix86_pe_secrel32=yes
3517 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3518 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3519 # Test if the assembler supports the extended form of the .section
3520 # directive that specifies section alignment. LTO support uses this,
3521 # but normally only after installation, so we warn but don't fail the
3522 # configure if LTO is enabled but the assembler does not support it.
3523 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3524 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3525 if test x$gcc_cv_as_section_has_align != xyes; then
3526 case ",$enable_languages," in
3528 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3535 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3536 gcc_cv_as_ix86_filds,,,
3537 [filds mem; fists mem],,
3538 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3539 [Define if your assembler uses filds and fists mnemonics.])])
3541 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3542 gcc_cv_as_ix86_fildq,,,
3543 [fildq mem; fistpq mem],,
3544 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3545 [Define if your assembler uses fildq and fistq mnemonics.])])
3547 gcc_GAS_CHECK_FEATURE([cmov syntax],
3548 gcc_cv_as_ix86_cmov_sun_syntax,,,
3549 [cmovl.l %edx, %eax],,
3550 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3551 [Define if your assembler supports the Sun syntax for cmov.])])
3553 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3554 gcc_cv_as_ix86_ffreep,,,
3556 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3557 [Define if your assembler supports the ffreep mnemonic.])])
3559 gcc_GAS_CHECK_FEATURE([.quad directive],
3560 gcc_cv_as_ix86_quad,,,
3562 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3563 [Define if your assembler supports the .quad directive.])])
3565 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3566 gcc_cv_as_ix86_sahf,,,
3569 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3570 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3572 gcc_GAS_CHECK_FEATURE([swap suffix],
3573 gcc_cv_as_ix86_swap,,,
3574 [movl.s %esp, %ebp],,
3575 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3576 [Define if your assembler supports the swap suffix.])])
3578 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3579 gcc_cv_as_ix86_diff_sect_delta,,,
3587 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3588 [Define if your assembler supports the subtraction of symbols in different sections.])])
3590 # These two are used unconditionally by i386.[ch]; it is to be defined
3591 # to 1 if the feature is present, 0 otherwise.
3592 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3593 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3599 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3600 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3601 [Define true if the assembler supports '.long foo@GOTOFF'.])
3603 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3604 gcc_cv_as_ix86_rep_lock_prefix,,,
3606 lock addl %edi, (%eax,%esi)
3607 lock orl $0, (%esp)],,
3608 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3609 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3611 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3612 gcc_cv_as_ix86_tlsgdplt,,,
3613 [call tls_gd@tlsgdplt],,
3614 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3615 [Define if your assembler supports @tlsgdplt.])])
3617 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3618 gcc_cv_as_ix86_tlsldmplt,,,
3619 [call tls_ld@tlsldmplt],,
3620 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3621 [Define if your assembler supports @tlsldmplt.])])
3626 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3627 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3629 addl r15 = @ltoffx(x#), gp
3631 ld8.mov r16 = [[r15]], x#],,
3632 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3633 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3639 *-*-aix*) conftest_s=' .machine "pwr5"
3643 gcc_GAS_CHECK_FEATURE([.machine directive support],
3644 gcc_cv_as_machine_directive,,,
3645 [ .machine ppc7400])
3646 if test x$gcc_cv_as_machine_directive != xyes; then
3647 echo "*** This target requires an assembler supporting \".machine\"" >&2
3648 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3649 test x$build = x$target && exit 1
3653 *) conftest_s=' .machine power4
3658 gcc_GAS_CHECK_FEATURE([mfcr field support],
3659 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3661 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3662 [Define if your assembler supports mfcr field.])])
3665 *-*-aix*) conftest_s=' .machine "pwr5"
3668 *) conftest_s=' .machine power5
3673 gcc_GAS_CHECK_FEATURE([popcntb support],
3674 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3676 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3677 [Define if your assembler supports popcntb field.])])
3680 *-*-aix*) conftest_s=' .machine "pwr5x"
3683 *) conftest_s=' .machine power5
3688 gcc_GAS_CHECK_FEATURE([fp round support],
3689 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3691 [AC_DEFINE(HAVE_AS_FPRND, 1,
3692 [Define if your assembler supports fprnd.])])
3695 *-*-aix*) conftest_s=' .machine "pwr6"
3698 *) conftest_s=' .machine power6
3703 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3704 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3706 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3707 [Define if your assembler supports mffgpr and mftgpr.])])
3710 *-*-aix*) conftest_s=' .csect .text[[PR]]
3712 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3716 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3717 *) conftest_s=' .text
3719 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3722 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3723 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3725 [AC_DEFINE(HAVE_AS_REL16, 1,
3726 [Define if your assembler supports R_PPC_REL16 relocs.])])
3729 *-*-aix*) conftest_s=' .machine "pwr6"
3732 *) conftest_s=' .machine power6
3737 gcc_GAS_CHECK_FEATURE([compare bytes support],
3738 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3740 [AC_DEFINE(HAVE_AS_CMPB, 1,
3741 [Define if your assembler supports cmpb.])])
3744 *-*-aix*) conftest_s=' .machine "pwr6"
3747 *) conftest_s=' .machine power6
3752 gcc_GAS_CHECK_FEATURE([decimal float support],
3753 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3755 [AC_DEFINE(HAVE_AS_DFP, 1,
3756 [Define if your assembler supports DFP instructions.])])
3759 *-*-aix*) conftest_s=' .machine "pwr7"
3762 *) conftest_s=' .machine power7
3767 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3768 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3770 [AC_DEFINE(HAVE_AS_VSX, 1,
3771 [Define if your assembler supports VSX instructions.])])
3774 *-*-aix*) conftest_s=' .machine "pwr7"
3777 *) conftest_s=' .machine power7
3782 gcc_GAS_CHECK_FEATURE([popcntd support],
3783 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3785 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3786 [Define if your assembler supports POPCNTD instructions.])])
3789 *-*-aix*) conftest_s=' .csect .text[[PR]]
3791 *) conftest_s=' .text
3795 gcc_GAS_CHECK_FEATURE([lwsync support],
3796 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3798 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3799 [Define if your assembler supports LWSYNC instructions.])])
3802 *-*-aix*) conftest_s=' .machine "476"
3805 *) conftest_s=' .machine "476"
3810 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3811 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3813 [AC_DEFINE(HAVE_AS_DCI, 1,
3814 [Define if your assembler supports the DCI/ICI instructions.])])
3816 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3817 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3818 [.gnu_attribute 4,1],,
3819 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3820 [Define if your assembler supports .gnu_attribute.])])
3822 gcc_GAS_CHECK_FEATURE([tls marker support],
3823 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3824 [ bl __tls_get_addr(x@tlsgd)],,
3825 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3826 [Define if your assembler supports arg info for __tls_get_addr.])])
3830 gcc_GAS_CHECK_FEATURE([.ref support],
3831 gcc_cv_as_aix_ref, [2.21.0],,
3832 [ .csect stuff[[rw]]
3838 [AC_DEFINE(HAVE_AS_REF, 1,
3839 [Define if your assembler supports .ref])])
3845 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3846 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3847 [ lw $4,%gp_rel(foo)($4)],,
3848 [if test x$target_cpu_default = x
3849 then target_cpu_default=MASK_EXPLICIT_RELOCS
3850 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3852 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3853 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3854 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3855 [Define if the assembler understands -mno-shared.])])
3857 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3858 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3859 [.gnu_attribute 4,1],,
3860 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3861 [Define if your assembler supports .gnu_attribute.])])
3863 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3864 gcc_cv_as_mips_dtprelword, [2,18,0],,
3865 [.section .tdata,"awT",@progbits
3869 .dtprelword x+0x8000],,
3870 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3871 [Define if your assembler supports .dtprelword.])])
3873 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3874 gcc_cv_as_mips_dspr1_mult,,,
3884 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3885 [Define if your assembler supports DSPR1 mult.])])
3887 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3888 gcc_cv_as_ld_jalr_reloc=no
3889 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3890 if test $in_tree_ld = yes ; then
3891 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3892 && test $in_tree_ld_is_elf = yes; then
3893 gcc_cv_as_ld_jalr_reloc=yes
3895 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3896 echo ' .ent x' > conftest.s
3897 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3898 echo ' ld $25,%call16(y)($28)' >> conftest.s
3899 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3900 echo '1: jalr $25' >> conftest.s
3901 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3902 echo '1: jalr $25' >> conftest.s
3903 echo ' .end x' >> conftest.s
3904 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3905 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3906 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3907 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3908 gcc_cv_as_ld_jalr_reloc=yes
3914 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3915 if test x$target_cpu_default = x; then
3916 target_cpu_default=MASK_RELAX_PIC_CALLS
3918 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3921 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3923 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3924 [gcc_cv_ld_mips_personality_relaxation],
3925 [gcc_cv_ld_mips_personality_relaxation=no
3926 if test $in_tree_ld = yes ; then
3927 if test "$gcc_cv_gld_major_version" -eq 2 \
3928 -a "$gcc_cv_gld_minor_version" -ge 21 \
3929 -o "$gcc_cv_gld_major_version" -gt 2; then
3930 gcc_cv_ld_mips_personality_relaxation=yes
3932 elif test x$gcc_cv_as != x \
3933 -a x$gcc_cv_ld != x \
3934 -a x$gcc_cv_readelf != x ; then
3935 cat > conftest.s <<EOF
3937 .cfi_personality 0x80,indirect_ptr
3944 .section .data,"aw",@progbits
3948 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3949 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3950 if $gcc_cv_readelf -d conftest 2>&1 \
3951 | grep TEXTREL > /dev/null 2>&1; then
3953 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3954 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3957 gcc_cv_ld_mips_personality_relaxation=yes
3961 rm -f conftest.s conftest.o conftest])
3962 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3963 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3964 [Define if your linker can relax absolute .eh_frame personality
3965 pointers into PC-relative form.])
3970 # Mips and HP-UX need the GNU assembler.
3971 # Linux on IA64 might be able to use the Intel assembler.
3974 mips*-*-* | *-*-hpux* )
3975 if test x$gas_flag = xyes \
3976 || test x"$host" != x"$build" \
3977 || test ! -x "$gcc_cv_as" \
3978 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3981 echo "*** This configuration requires the GNU assembler" >&2
3987 # ??? Not all targets support dwarf2 debug_line, even within a version
3988 # of gas. Moreover, we need to emit a valid instruction to trigger any
3989 # info to the output file. So, as supported targets are added to gas 2.11,
3990 # add some instruction here to (also) show we expect this might work.
3991 # ??? Once 2.11 is released, probably need to add first known working
3992 # version to the per-target configury.
3994 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
3995 | pa | rs6000 | score | sparc | spu | xstormy16 | xtensa)
4005 if test x"$insn" != x; then
4007 .file 1 \"conftest.s\"
4010 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4011 gcc_cv_as_dwarf2_debug_line,
4012 [elf,2,11,0],, [$conftest_s],
4013 [if test x$gcc_cv_objdump != x \
4014 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4015 | grep debug_line > /dev/null 2>&1; then
4016 gcc_cv_as_dwarf2_debug_line=yes
4019 # The .debug_line file table must be in the exact order that
4020 # we specified the files, since these indices are also used
4021 # by DW_AT_decl_file. Approximate this test by testing if
4022 # the assembler bitches if the same index is assigned twice.
4023 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4024 gcc_cv_as_dwarf2_file_buggy,,,
4028 if test $gcc_cv_as_dwarf2_debug_line = yes \
4029 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4030 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4031 [Define if your assembler supports dwarf2 .file/.loc directives,
4032 and preserves file table indices exactly as given.])
4035 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4036 gcc_cv_as_gdwarf2_flag,
4037 [elf,2,11,0], [--gdwarf2], [$insn],,
4038 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4039 [Define if your assembler supports the --gdwarf2 option.])])
4041 gcc_GAS_CHECK_FEATURE([--gstabs option],
4042 gcc_cv_as_gstabs_flag,
4043 [elf,2,11,0], [--gstabs], [$insn],
4044 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4045 # and warns about it, but still exits successfully. So check for
4047 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4049 else gcc_cv_as_gstabs_flag=yes
4051 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4052 [Define if your assembler supports the --gstabs option.])])
4054 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4055 gcc_cv_as_debug_prefix_map_flag,
4056 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4057 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4058 [Define if your assembler supports the --debug-prefix-map option.])])
4061 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4064 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4065 [Define if your assembler supports .lcomm with an alignment field.])])
4067 AC_ARG_ENABLE(gnu-unique-object,
4068 [AS_HELP_STRING([--enable-gnu-unique-object],
4069 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4070 [case $enable_gnu_unique_object in
4072 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4073 Valid choices are 'yes' and 'no'.]) ;;
4075 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4077 [.type foo, @gnu_unique_object],,
4078 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4079 [[if test x$host = x$build -a x$host = x$target &&
4080 ldd --version 2>/dev/null &&
4081 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4082 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4083 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4084 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4085 if test "$glibcnum" -ge 2011 ; then
4086 enable_gnu_unique_object=yes
4089 if test x$enable_gnu_unique_object = xyes; then
4090 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4091 [Define if your assembler supports @gnu_unique_object.])
4094 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4095 [gcc_cv_as_line_zero],
4096 [gcc_cv_as_line_zero=no
4097 if test $in_tree_gas = yes; then
4098 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4099 elif test "x$gcc_cv_as" != x; then
4100 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4101 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4102 test "x`cat conftest.out`" = x
4104 gcc_cv_as_line_zero=yes
4106 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4107 cat conftest.s >&AS_MESSAGE_LOG_FD
4108 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4109 cat conftest.out >&AS_MESSAGE_LOG_FD
4111 rm -f conftest.o conftest.s conftest.out
4113 if test "x$gcc_cv_as_line_zero" = xyes; then
4114 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4115 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4118 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4119 gcc_cv_ld_eh_frame_hdr=no
4120 if test $in_tree_ld = yes ; then
4121 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4122 && test $in_tree_ld_is_elf = yes; then
4123 gcc_cv_ld_eh_frame_hdr=yes
4125 elif test x$gcc_cv_ld != x; then
4126 if echo "$ld_ver" | grep GNU > /dev/null; then
4127 # Check if linker supports --eh-frame-hdr option
4128 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4129 gcc_cv_ld_eh_frame_hdr=yes
4134 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4135 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4136 gcc_cv_ld_eh_frame_hdr=yes
4142 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4143 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4144 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4145 [Define if your linker supports .eh_frame_hdr.])
4147 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4149 AC_MSG_CHECKING(linker position independent executable support)
4151 if test $in_tree_ld = yes ; then
4152 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4153 && test $in_tree_ld_is_elf = yes; then
4156 elif test x$gcc_cv_ld != x; then
4157 # Check if linker supports -pie option
4158 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4162 if test x"$gcc_cv_ld_pie" = xyes; then
4163 AC_DEFINE(HAVE_LD_PIE, 1,
4164 [Define if your linker supports -pie option.])
4166 AC_MSG_RESULT($gcc_cv_ld_pie)
4168 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4169 gcc_cv_ld_eh_gc_sections=no
4170 if test $in_tree_ld = yes ; then
4171 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4172 && test $in_tree_ld_is_elf = yes; then
4173 gcc_cv_ld_eh_gc_sections=yes
4175 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4176 cat > conftest.s <<EOF
4179 .type _start, @function
4182 .size _start, .-_start
4183 .section .text.foo,"ax",@progbits
4184 .type foo, @function
4188 .section .gcc_except_table.foo,"a",@progbits
4191 .section .eh_frame,"a",@progbits
4194 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4195 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4196 | grep "gc-sections option ignored" > /dev/null; then
4197 gcc_cv_ld_eh_gc_sections=no
4198 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4199 | grep gcc_except_table > /dev/null; then
4200 gcc_cv_ld_eh_gc_sections=yes
4201 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4202 if test x$gcc_cv_as_comdat_group != xyes; then
4203 gcc_cv_ld_eh_gc_sections=no
4204 cat > conftest.s <<EOF
4207 .type _start, @function
4210 .size _start, .-_start
4211 .section .gnu.linkonce.t.foo,"ax",@progbits
4212 .type foo, @function
4216 .section .gcc_except_table.foo,"a",@progbits
4219 .section .eh_frame,"a",@progbits
4222 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4223 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4224 | grep "gc-sections option ignored" > /dev/null; then
4225 gcc_cv_ld_eh_gc_sections=no
4226 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4227 | grep gcc_except_table > /dev/null; then
4228 gcc_cv_ld_eh_gc_sections=yes
4234 rm -f conftest.s conftest.o conftest
4238 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4239 gcc_cv_ld_eh_gc_sections=no
4242 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4243 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4244 [Define if your linker supports garbage collection of
4245 sections in presence of EH frames.])
4247 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4249 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4250 gcc_cv_ld_eh_gc_sections_bug=no
4251 if test $in_tree_ld = yes ; then
4252 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4253 && test $in_tree_ld_is_elf = yes; then
4254 gcc_cv_ld_eh_gc_sections_bug=yes
4256 elif test x$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
4257 gcc_cv_ld_eh_gc_sections_bug=yes
4258 cat > conftest.s <<EOF
4261 .type _start, @function
4264 .size _start, .-_start
4265 .section .text.startup.foo,"ax",@progbits
4266 .type foo, @function
4270 .section .gcc_except_table.foo,"a",@progbits
4273 .section .eh_frame,"a",@progbits
4276 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4277 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4278 | grep "gc-sections option ignored" > /dev/null; then
4280 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4281 | grep gcc_except_table > /dev/null; then
4282 gcc_cv_ld_eh_gc_sections_bug=no
4285 rm -f conftest.s conftest.o conftest
4287 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4288 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4289 [Define if your linker has buggy garbage collection of
4290 sections support when .text.startup.foo like sections are used.])
4292 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4298 AC_CACHE_CHECK(linker --as-needed support,
4299 gcc_cv_ld_as_needed,
4300 [gcc_cv_ld_as_needed=no
4301 if test $in_tree_ld = yes ; then
4302 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4303 && test $in_tree_ld_is_elf = yes; then
4304 gcc_cv_ld_as_needed=yes
4306 elif test x$gcc_cv_ld != x; then
4307 # Check if linker supports --as-needed and --no-as-needed options
4308 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4309 gcc_cv_ld_as_needed=yes
4313 if test x"$gcc_cv_ld_as_needed" = xyes; then
4314 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4315 [Define if your linker supports --as-needed and --no-as-needed options.])
4318 case "$target:$tm_file" in
4319 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4320 AC_CACHE_CHECK(linker support for omitting dot symbols,
4321 gcc_cv_ld_no_dot_syms,
4322 [gcc_cv_ld_no_dot_syms=no
4323 if test $in_tree_ld = yes ; then
4324 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4325 gcc_cv_ld_no_dot_syms=yes
4327 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4328 cat > conftest1.s <<EOF
4332 cat > conftest2.s <<EOF
4333 .section ".opd","aw"
4338 .quad .LEfoo,.TOC.@tocbase,0
4344 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4345 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4346 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4347 gcc_cv_ld_no_dot_syms=yes
4349 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4352 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4353 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4354 [Define if your PowerPC64 linker only needs function descriptor syms.])
4357 AC_CACHE_CHECK(linker large toc support,
4358 gcc_cv_ld_large_toc,
4359 [gcc_cv_ld_large_toc=no
4360 if test $in_tree_ld = yes ; then
4361 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4362 gcc_cv_ld_large_toc=yes
4364 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4365 cat > conftest.s <<EOF
4366 .section ".tbss","awT",@nobits
4372 addis 9,13,ie0@got@tprel@ha
4373 ld 9,ie0@got@tprel@l(9)
4375 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4376 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4377 gcc_cv_ld_large_toc=yes
4379 rm -f conftest conftest.o conftest.s
4382 if test x"$gcc_cv_ld_large_toc" = xyes; then
4383 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4384 [Define if your PowerPC64 linker supports a large TOC.])
4389 AC_CACHE_CHECK(linker --build-id support,
4391 [gcc_cv_ld_buildid=no
4392 if test $in_tree_ld = yes ; then
4393 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4394 "$gcc_cv_gld_minor_version" -ge 18 -o \
4395 "$gcc_cv_gld_major_version" -gt 2 \
4396 && test $in_tree_ld_is_elf = yes; then
4397 gcc_cv_ld_buildid=yes
4399 elif test x$gcc_cv_ld != x; then
4400 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4401 gcc_cv_ld_buildid=yes
4404 if test x"$gcc_cv_ld_buildid" = xyes; then
4405 AC_DEFINE(HAVE_LD_BUILDID, 1,
4406 [Define if your linker supports --build-id.])
4409 AC_ARG_ENABLE(linker-build-id,
4410 [AS_HELP_STRING([--enable-linker-build-id],
4411 [compiler will always pass --build-id to linker])],
4413 enable_linker_build_id=no)
4415 if test x"$enable_linker_build_id" = xyes; then
4416 if test x"$gcc_cv_ld_buildid" = xyes; then
4417 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4418 [Define if gcc should always pass --build-id to linker.])
4420 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4424 # In binutils 2.21, GNU ld gained support for new emulations fully
4425 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4426 AC_CACHE_CHECK(linker *_sol2 emulation support,
4427 gcc_cv_ld_sol2_emulation,
4428 [gcc_cv_ld_sol2_emulation=no
4429 if test $in_tree_ld = yes ; then
4430 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4431 "$gcc_cv_gld_minor_version" -ge 21 -o \
4432 "$gcc_cv_gld_major_version" -gt 2 \
4433 && test $in_tree_ld_is_elf = yes; then
4434 gcc_cv_ld_sol2_emulation=yes
4436 elif test x$gcc_cv_ld != x; then
4437 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4438 grep _sol2 > /dev/null; then
4439 gcc_cv_ld_sol2_emulation=yes
4442 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4443 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4444 [Define if your linker supports the *_sol2 emulations.])
4447 AC_CACHE_CHECK(linker --sysroot support,
4449 [gcc_cv_ld_sysroot=no
4450 if test $in_tree_ld = yes ; then
4451 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4452 gcc_cv_ld_sysroot=yes
4454 elif test x$gcc_cv_ld != x; then
4455 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4456 gcc_cv_ld_sysroot=yes
4459 if test x"$gcc_cv_ld_sysroot" = xyes; then
4460 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4461 [Define if your linker supports --sysroot.])
4464 if test x$with_sysroot = x && test x$host = x$target \
4465 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4466 && test "$prefix" != "NONE"; then
4467 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4468 [Define to PREFIX/include if cpp should also search that directory.])
4471 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4472 if test "x$with_headers" != x; then
4473 target_header_dir=$with_headers
4474 elif test "x$with_sysroot" = x; then
4475 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4476 elif test "x$with_build_sysroot" != "x"; then
4477 target_header_dir="${with_build_sysroot}/usr/include"
4478 elif test "x$with_sysroot" = xyes; then
4479 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4481 target_header_dir="${with_sysroot}/usr/include"
4484 target_header_dir=/usr/include
4487 # Test for stack protector support in target C library.
4488 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4489 gcc_cv_libc_provides_ssp,
4490 [gcc_cv_libc_provides_ssp=no
4492 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4493 [# glibc 2.4 and later provides __stack_chk_fail and
4494 # either __stack_chk_guard, or TLS access to stack guard canary.
4495 if test -f $target_header_dir/features.h \
4496 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4497 $target_header_dir/features.h > /dev/null; then
4498 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4499 $target_header_dir/features.h > /dev/null; then
4500 gcc_cv_libc_provides_ssp=yes
4501 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4502 $target_header_dir/features.h > /dev/null \
4503 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4504 $target_header_dir/features.h > /dev/null; then
4505 gcc_cv_libc_provides_ssp=yes
4506 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4507 $target_header_dir/features.h > /dev/null && \
4508 test -f $target_header_dir/bits/uClibc_config.h && \
4509 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4510 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4511 gcc_cv_libc_provides_ssp=yes
4516 # Avoid complicated tests (see
4517 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4518 # simply assert that glibc does provide this, which is true for all
4519 # realistically usable GNU/Hurd configurations.
4520 gcc_cv_libc_provides_ssp=yes;;
4521 *-*-darwin* | *-*-freebsd*)
4522 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4523 [echo "no __stack_chk_fail on this target"])
4525 *) gcc_cv_libc_provides_ssp=no ;;
4528 if test x$gcc_cv_libc_provides_ssp = xyes; then
4529 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4530 [Define if your target C library provides stack protector support])
4533 # Test for <sys/sdt.h> on the target.
4534 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4535 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4537 if test -f $target_header_dir/sys/sdt.h; then
4538 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4539 [Define if your target C library provides sys/sdt.h])
4541 AC_MSG_RESULT($have_sys_sdt_h)
4543 # Check if TFmode long double should be used by default or not.
4544 # Some glibc targets used DFmode long double, but with glibc 2.4
4545 # and later they can use TFmode.
4547 powerpc*-*-linux* | \
4551 AC_ARG_WITH(long-double-128,
4552 [AS_HELP_STRING([--with-long-double-128],
4553 [use 128-bit long double by default])],
4554 gcc_cv_target_ldbl128="$with_long_double_128",
4555 [[gcc_cv_target_ldbl128=no
4556 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4557 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4558 && gcc_cv_target_ldbl128=yes
4562 if test x$gcc_cv_target_ldbl128 = xyes; then
4563 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4564 [Define if TFmode long double should be the default])
4567 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4568 gcc_cv_target_dl_iterate_phdr=unknown
4571 # <link.h> needs both a dl_iterate_phdr declaration and support for
4572 # compilation with largefile support.
4573 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4574 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4575 gcc_cv_target_dl_iterate_phdr=yes
4577 gcc_cv_target_dl_iterate_phdr=no
4581 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4582 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4583 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4584 [Define if your target C library provides the `dl_iterate_phdr' function.])
4586 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4588 # Find out what GC implementation we want, or may, use.
4590 [AS_HELP_STRING([--with-gc={page,zone}],
4591 [choose the garbage collection mechanism to use
4592 with the compiler])],
4599 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4602 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4607 echo "Using $GGC for garbage collection."
4609 # Libraries to use on the host. This will normally be set by the top
4610 # level Makefile. Here we simply capture the value for our Makefile.
4611 if test -z "${HOST_LIBS+set}"; then
4616 # Use the system's zlib library.
4618 zlibinc="-I\$(srcdir)/../zlib"
4619 AC_ARG_WITH(system-zlib,
4620 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4627 dnl Very limited version of automake's enable-maintainer-mode
4629 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4630 dnl maintainer-mode is disabled by default
4631 AC_ARG_ENABLE(maintainer-mode,
4632 [AS_HELP_STRING([--enable-maintainer-mode],
4633 [enable make rules and dependencies not useful
4634 (and sometimes confusing) to the casual installer])],
4635 maintainer_mode=$enableval,
4638 AC_MSG_RESULT($maintainer_mode)
4640 if test "$maintainer_mode" = "yes"; then
4651 # Make empty files to contain the specs and options for each language.
4652 # Then add #include lines to for a compiler that has specs and/or options.
4658 # These (without "all_") are set in each config-lang.in.
4659 # `language' must be a single word so is spelled singularly.
4662 all_outputs='Makefile'
4663 # List of language makefile fragments.
4665 # Additional files for gengtype
4666 all_gtfiles="$target_gtfiles"
4668 # These are the languages that are set in --enable-languages,
4669 # and are available in the GCC tree.
4670 all_selected_languages=
4672 # Add the language fragments.
4673 # Languages are added via two mechanisms. Some information must be
4674 # recorded in makefile variables, these are defined in config-lang.in.
4675 # We accumulate them and plug them into the main Makefile.
4676 # The other mechanism is a set of hooks for each of the main targets
4677 # like `clean', `install', etc.
4679 language_hooks="Make-hooks"
4681 for lang in ${srcdir}/*/config-lang.in
4684 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4686 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4687 if test "x$lang_alias" = x
4689 echo "$lang doesn't set \$language." 1>&2
4692 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4693 subdirs="$subdirs $subdir"
4695 # $gcc_subdir is where the gcc integration files are to be found
4696 # for a language, both for internal compiler purposes (compiler
4697 # sources implementing front-end to GCC tree converters), and for
4698 # build infrastructure purposes (Make-lang.in, etc.)
4700 # This will be <subdir> (relative to $srcdir) if a line like
4701 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4702 # is found in <langdir>/config-lang.in, and will remain <langdir>
4705 # Except for the language alias (fetched above), the regular
4706 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4707 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4708 # only this and the language alias.
4710 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4711 if [ "$gcc_subdir" = "" ]; then
4712 gcc_subdir="$subdir"
4715 case ",$enable_languages," in
4717 all_selected_languages="$all_selected_languages $lang_alias"
4718 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4719 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4731 . ${srcdir}/$gcc_subdir/config-lang.in
4732 if test "x$language" = x
4734 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4739 case ",$enable_languages," in
4742 for i in $subdir_requires; do
4743 test -f "${srcdir}/$i/config-lang.in" && continue
4751 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4752 if test -f $srcdir/$gcc_subdir/lang.opt; then
4753 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4754 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4756 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4757 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4759 all_languages="$all_languages $language"
4760 all_compilers="$all_compilers $compilers"
4761 all_outputs="$all_outputs $outputs"
4762 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4763 case ",$enable_languages," in
4765 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4767 AC_SUBST(enable_lto)
4773 # Pick up gtfiles for c
4775 . ${srcdir}/c-config-lang.in
4776 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4779 for language in $all_selected_languages
4781 check_languages="$check_languages check-$language"
4784 # We link each language in with a set of hooks, reached indirectly via
4785 # lang.${target}. Only do so for selected languages.
4789 target_list="all.cross start.encap rest.encap tags \
4790 install-common install-man install-info install-pdf install-html dvi \
4791 pdf html uninstall info man srcextra srcman srcinfo \
4792 mostlyclean clean distclean maintainer-clean install-plugin"
4794 for t in $target_list
4797 for lang in $all_selected_languages
4801 echo "lang.$t: $x" >> Make-hooks
4805 # Option include files
4808 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4809 option_includes="option-includes.mk"
4810 AC_SUBST_FILE(option_includes)
4818 echo "dir ." > .gdbinit
4819 echo "dir ${srcdir}" >> .gdbinit
4820 if test x$gdb_needs_out_file_path = xyes
4822 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4824 if test "x$subdirs" != x; then
4827 echo "dir ${srcdir}/$s" >> .gdbinit
4830 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4832 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4833 AC_SUBST(gcc_tooldir)
4836 # Find a directory in which to install a shared libgcc.
4838 AC_ARG_ENABLE(version-specific-runtime-libs,
4839 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
4840 [specify that runtime libraries should be
4841 installed in a compiler-specific directory])])
4843 AC_ARG_WITH(slibdir,
4844 [AS_HELP_STRING([--with-slibdir=DIR], [shared libraries in DIR @<:@LIBDIR@:>@])],
4845 slibdir="$with_slibdir",
4846 if test "${enable_version_specific_runtime_libs+set}" = set; then
4847 slibdir='$(libsubdir)'
4848 elif test "$host" != "$target"; then
4849 slibdir='$(build_tooldir)/lib'
4855 # Substitute configuration variables
4858 AC_SUBST(all_compilers)
4859 AC_SUBST(all_gtfiles)
4860 AC_SUBST(all_lang_makefrags)
4861 AC_SUBST(all_languages)
4862 AC_SUBST(all_selected_languages)
4863 AC_SUBST(build_exeext)
4864 AC_SUBST(build_install_headers_dir)
4865 AC_SUBST(build_xm_file_list)
4866 AC_SUBST(build_xm_include_list)
4867 AC_SUBST(build_xm_defines)
4868 AC_SUBST(build_file_translate)
4869 AC_SUBST(check_languages)
4870 AC_SUBST(cpp_install_dir)
4871 AC_SUBST(xmake_file)
4872 AC_SUBST(tmake_file)
4873 AC_SUBST(TM_ENDIAN_CONFIG)
4874 AC_SUBST(TM_MULTILIB_CONFIG)
4875 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4876 AC_SUBST(extra_gcc_objs)
4877 AC_SUBST(user_headers_inc_next_pre)
4878 AC_SUBST(user_headers_inc_next_post)
4879 AC_SUBST(extra_headers_list)
4880 AC_SUBST(extra_objs)
4881 AC_SUBST(extra_parts)
4882 AC_SUBST(extra_passes)
4883 AC_SUBST(extra_programs)
4884 AC_SUBST(float_h_file)
4885 AC_SUBST(gcc_config_arguments)
4886 AC_SUBST(gcc_gxx_include_dir)
4887 AC_SUBST(host_exeext)
4888 AC_SUBST(host_xm_file_list)
4889 AC_SUBST(host_xm_include_list)
4890 AC_SUBST(host_xm_defines)
4891 AC_SUBST(out_host_hook_obj)
4893 AC_SUBST(lang_opt_files)
4894 AC_SUBST(lang_specs_files)
4895 AC_SUBST(lang_tree_files)
4896 AC_SUBST(local_prefix)
4898 AC_SUBST(objc_boehm_gc)
4900 AC_SUBST(out_object_file)
4901 AC_SUBST(common_out_file)
4902 AC_SUBST(common_out_object_file)
4903 AC_SUBST(thread_file)
4904 AC_SUBST(tm_file_list)
4905 AC_SUBST(tm_include_list)
4906 AC_SUBST(tm_defines)
4907 AC_SUBST(libgcc_tm_file_list)
4908 AC_SUBST(libgcc_tm_include_list)
4909 AC_SUBST(tm_p_file_list)
4910 AC_SUBST(tm_p_include_list)
4911 AC_SUBST(xm_file_list)
4912 AC_SUBST(xm_include_list)
4913 AC_SUBST(xm_defines)
4914 AC_SUBST(use_gcc_stdint)
4915 AC_SUBST(c_target_objs)
4916 AC_SUBST(cxx_target_objs)
4917 AC_SUBST(fortran_target_objs)
4918 AC_SUBST(target_cpu_default)
4920 AC_SUBST_FILE(language_hooks)
4923 if test x${build} = x${host} ; then
4924 if test x${host} = x${target} ; then
4925 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4927 echo "Links are now set up to build a cross-compiler" 1>&2
4928 echo " from ${host} to ${target}." 1>&2
4931 if test x${host} = x${target} ; then
4932 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4933 echo " for ${target}." 1>&2
4935 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4936 echo " from ${host} to ${target}." 1>&2
4940 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4941 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4943 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4944 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4946 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4947 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4948 if test "x${CLOOGLIBS}" != "x" ; then
4949 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4952 # Check for plugin support
4953 AC_ARG_ENABLE(plugin,
4954 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
4955 enable_plugin=$enableval,
4956 enable_plugin=yes; default_plugin=yes)
4962 if test x$build = x$host; then
4963 export_sym_check="nm${exeext} -g"
4964 elif test x$host = x$target; then
4965 export_sym_check="$gcc_cv_nm -g"
4971 if test x$build = x$host; then
4972 export_sym_check="objdump${exeext} -T"
4973 elif test x$host = x$target; then
4974 export_sym_check="$gcc_cv_objdump -T"
4981 if test x"$enable_plugin" = x"yes"; then
4983 AC_MSG_CHECKING([for exported symbols])
4984 if test "x$export_sym_check" != x; then
4985 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4986 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4987 if $export_sym_check conftest | grep foobar > /dev/null; then
4988 : # No need to use a flag
4989 AC_MSG_RESULT([yes])
4991 AC_MSG_RESULT([yes])
4992 AC_MSG_CHECKING([for -rdynamic])
4993 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
4994 if $export_sym_check conftest | grep foobar > /dev/null; then
4996 pluginlibs="-rdynamic"
5001 AC_MSG_RESULT([$plugin_rdynamic])
5004 AC_MSG_RESULT([unable to check])
5009 AC_SEARCH_LIBS([dlopen], [dl])
5010 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5011 pluginlibs="$pluginlibs -ldl"
5015 # Check that we can build shared objects with -fPIC -shared
5016 saved_LDFLAGS="$LDFLAGS"
5017 saved_CFLAGS="$CFLAGS"
5020 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5021 CFLAGS="$CFLAGS -fPIC"
5022 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5025 CFLAGS="$CFLAGS -fPIC"
5026 LDFLAGS="$LDFLAGS -fPIC -shared"
5029 AC_MSG_CHECKING([for -fPIC -shared])
5031 [extern int X;],[return X == 0;],
5032 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5033 [AC_MSG_RESULT([no]); have_pic_shared=no])
5034 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5038 LDFLAGS="$saved_LDFLAGS"
5039 CFLAGS="$saved_CFLAGS"
5041 # If plugin support had been requested but not available, fail.
5042 if test x"$enable_plugin" = x"no" ; then
5043 if test x"$default_plugin" != x"yes"; then
5045 Building GCC with plugin support requires a host that supports
5046 -fPIC, -shared, -ldl and -rdynamic.])
5051 AC_SUBST(pluginlibs)
5052 AC_SUBST(enable_plugin)
5053 if test x"$enable_plugin" = x"yes"; then
5054 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5058 AC_ARG_ENABLE(libquadmath-support,
5059 [AS_HELP_STRING([--disable-libquadmath-support],
5060 [disable libquadmath support for Fortran])],
5061 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5062 ENABLE_LIBQUADMATH_SUPPORT=yes)
5063 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5064 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5065 [Define to 1 to enable libquadmath support])
5069 # Specify what hash style to use by default.
5070 AC_ARG_WITH([linker-hash-style],
5071 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5072 [specify the linker hash style])],
5073 [case x"$withval" in
5075 LINKER_HASH_STYLE=sysv
5078 LINKER_HASH_STYLE=gnu
5081 LINKER_HASH_STYLE=both
5084 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5087 [LINKER_HASH_STYLE=''])
5088 if test x"${LINKER_HASH_STYLE}" != x; then
5089 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5090 [The linker hash style])
5093 # Configure the subdirectories
5094 # AC_CONFIG_SUBDIRS($subdirs)
5096 # Create the Makefile
5097 # and configure language subdirectories
5098 AC_CONFIG_FILES($all_outputs)
5100 AC_CONFIG_COMMANDS([default],
5102 case ${CONFIG_HEADERS} in
5103 *auto-host.h:config.in*)
5106 # Make sure all the subdirs exist.
5107 for d in $subdirs doc build common c-family
5109 test -d $d || mkdir $d
5112 [subdirs='$subdirs'])