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])],
644 AC_MSG_WARN([fixed-point is not supported on IRIX, ignored])
645 enable_fixed_point=no
648 enable_fixed_point=yes
653 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
654 enable_fixed_point=no
658 AC_SUBST(enable_fixed_point)
660 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
661 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
662 [Define to 1 to enable fixed-point arithmetic extension to C.])
665 # Pass with no value to take the default
666 # Pass with a value to specify a thread package
667 AC_ARG_ENABLE(threads,
668 [AS_HELP_STRING([[--enable-threads[=LIB]]],
669 [enable thread usage for target GCC,
670 using LIB thread package])],,
674 [AS_HELP_STRING([--enable-tls],
675 [enable or disable generation of tls code
676 overriding the assembler check for tls support])],
680 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
681 Valid choices are 'yes' and 'no'.]) ;;
685 AC_ARG_ENABLE(objc-gc,
686 [AS_HELP_STRING([--enable-objc-gc],
687 [enable the use of Boehm's garbage collector with
688 the GNU Objective-C runtime])],
689 if test x$enable_objc_gc = xno; then
697 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
698 dwarf2="$with_dwarf2",
701 AC_ARG_ENABLE(shared,
702 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
704 case $enable_shared in
708 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
709 for pkg in $enableval; do
710 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
717 ], [enable_shared=yes])
718 AC_SUBST(enable_shared)
720 AC_ARG_WITH(build-sysroot,
721 [AS_HELP_STRING([--with-build-sysroot=sysroot],
722 [use sysroot as the system root during the build])])
725 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
726 [search for usr/lib, usr/include, et al, within DIR])],
728 case ${with_sysroot} in
729 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
730 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
733 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
734 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
736 if test "x$prefix" = xNONE; then
737 test_prefix=/usr/local
741 if test "x$exec_prefix" = xNONE; then
742 test_exec_prefix=$test_prefix
744 test_exec_prefix=$exec_prefix
746 case ${TARGET_SYSTEM_ROOT} in
747 "${test_prefix}"|"${test_prefix}/"*|\
748 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
749 '${prefix}'|'${prefix}/'*|\
750 '${exec_prefix}'|'${exec_prefix}/'*)
751 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
752 TARGET_SYSTEM_ROOT_DEFINE="$t"
757 TARGET_SYSTEM_ROOT_DEFINE=
758 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
760 AC_SUBST(TARGET_SYSTEM_ROOT)
761 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
762 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
765 [AS_HELP_STRING([--with-specs=SPECS],
766 [add SPECS to driver command-line processing])],
767 [CONFIGURE_SPECS=$withval],
770 AC_SUBST(CONFIGURE_SPECS)
772 ACX_PKGVERSION([GCC])
773 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
775 # Sanity check enable_languages in case someone does not run the toplevel
776 # configure # script.
777 AC_ARG_ENABLE(languages,
778 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
779 [case ,${enable_languages}, in
781 # go safe -- we cannot be much sure without the toplevel
783 # analysis of which target libs are present and usable
787 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
792 enable_languages=c,${enable_languages}
795 [enable_languages=c])
797 AC_ARG_WITH(multilib-list,
798 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
800 with_multilib_list=default)
802 # -------------------------
803 # Checks for other programs
804 # -------------------------
808 # Find some useful tools
810 # We need awk to create options.c and options.h.
811 # Bail out if it's missing.
813 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
821 # By default, the Darwin ranlib will not treat common symbols as
822 # definitions when building the archive table of contents. Other
823 # ranlibs do that; pass an option to the Darwin ranlib that makes
824 # it behave similarly.
830 AC_SUBST(ranlib_flags)
834 # See if cmp has --ignore-initial.
835 gcc_AC_PROG_CMP_IGNORE_INITIAL
837 # See if we have the mktemp command.
838 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
840 # See if makeinfo has been installed and is modern enough
841 # that we can use it.
842 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
843 [GNU texinfo.* \([0-9][0-9.]*\)],
844 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
845 if test $gcc_cv_prog_makeinfo_modern = no; then
847 *** Makeinfo is missing or too old.
848 *** Info documentation will not be built.])
855 # Is pod2man recent enough to regenerate manpages?
856 AC_MSG_CHECKING([for recent Pod::Man])
857 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
859 GENERATED_MANPAGES=generated-manpages
864 AC_SUBST(GENERATED_MANPAGES)
866 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
869 dnl Don't use AC_PROG_LEX; we insist on flex.
870 dnl LEXLIB is not useful in gcc.
871 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
874 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
876 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
877 # check for build == host before using them.
880 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
881 && test -d ../binutils ; then
882 NM='${objdir}/../binutils/nm-new'
884 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
888 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
889 && test -d ../binutils ; then
890 AR='${objdir}/../binutils/ar'
892 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
896 # --------------------
897 # Checks for C headers
898 # --------------------
900 # Need to reject headers which give warnings, so that the -Werror bootstrap
901 # works later. *sigh* This needs to come before all header checks.
908 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
909 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
910 sys/resource.h sys/param.h sys/times.h sys/stat.h \
911 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
913 # Check for thread headers.
914 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
915 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
917 # These tests can't be done till we know if we have limits.h.
921 # ----------------------
922 # Checks for C++ headers
923 # ----------------------
925 dnl Autoconf will give an error in the configure script if there is no
926 dnl C++ preprocessor. Hack to prevent that.
927 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
929 m4_popdef([AC_MSG_ERROR])[]dnl
933 AC_CHECK_HEADERS(unordered_map)
934 AC_CHECK_HEADERS(tr1/unordered_map)
935 AC_CHECK_HEADERS(ext/hash_map)
944 # These libraries may be used by collect2.
945 # We may need a special search path to get them linked.
946 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
948 for libs in '' -lld -lmld \
949 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
950 '-L/usr/lib/cmplrs/cc3.11 -lmld'
953 AC_TRY_LINK_FUNC(ldopen,
954 [gcc_cv_collect2_libs="$libs"; break])
957 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
958 case $gcc_cv_collect2_libs in
960 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
962 AC_SUBST(COLLECT2_LIBS)
964 # When building Ada code on Alpha, we need exc_resume which is usually in
965 # -lexc. So test for it.
968 AC_SEARCH_LIBS(exc_resume, exc)
971 AC_SUBST(GNAT_LIBEXC)
973 # Some systems put ldexp and frexp in libm instead of libc; assume
974 # they're both in the same place. jcf-dump needs them.
977 AC_SEARCH_LIBS(ldexp, m)
982 # Use <inttypes.h> only if it exists,
983 # doesn't clash with <sys/types.h>, and declares intmax_t.
984 AC_MSG_CHECKING(for inttypes.h)
985 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
986 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
987 [[#include <sys/types.h>
988 #include <inttypes.h>]],
989 [[intmax_t i = -1;]])],
990 [gcc_cv_header_inttypes_h=yes],
991 [gcc_cv_header_inttypes_h=no])])
992 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
993 if test $gcc_cv_header_inttypes_h = yes; then
994 AC_DEFINE(HAVE_INTTYPES_H, 1,
995 [Define if you have a working <inttypes.h> header file.])
998 dnl Disabled until we have a complete test for buggy enum bitfields.
999 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1001 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1002 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1003 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1004 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1005 putchar_unlocked putc_unlocked)
1006 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1007 sysconf strsignal getrusage nl_langinfo \
1008 gettimeofday mbstowcs wcswidth mmap setlocale \
1011 if test x$ac_cv_func_mbstowcs = xyes; then
1012 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1013 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1019 [gcc_cv_func_mbstowcs_works=yes],
1020 [gcc_cv_func_mbstowcs_works=no],
1021 [gcc_cv_func_mbstowcs_works=yes])])
1022 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1023 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1024 [Define this macro if mbstowcs does not crash when its
1025 first argument is NULL.])
1029 AC_CHECK_TYPE(ssize_t, int)
1030 AC_CHECK_TYPE(caddr_t, char *)
1032 gcc_AC_FUNC_MMAP_BLACKLIST
1036 # Under VMS, vfork works very differently than on Unix. The standard test
1037 # won't work, and it isn't easily adaptable. It makes more sense to
1039 ac_cv_func_vfork_works=yes
1045 # Until we have in-tree GNU iconv:
1047 AC_SUBST(LIBICONV_DEP)
1053 # We will need to find libiberty.h and ansidecl.h
1054 saved_CFLAGS="$CFLAGS"
1055 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1056 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1057 strsignal strstr strverscmp \
1058 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1059 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1060 #include "ansidecl.h"
1061 #include "system.h"])
1063 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1064 #include "ansidecl.h"
1066 #ifdef HAVE_SYS_RESOURCE_H
1067 #include <sys/resource.h>
1071 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1072 #include "ansidecl.h"
1074 #ifdef HAVE_SYS_RESOURCE_H
1075 #include <sys/resource.h>
1077 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1078 [Define to `long' if <sys/resource.h> doesn't define.])])
1080 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1081 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1082 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1083 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1084 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1085 #include "ansidecl.h"
1094 gcc_AC_CHECK_DECLS(times, , ,[
1095 #include "ansidecl.h"
1097 #ifdef HAVE_SYS_TIMES_H
1098 #include <sys/times.h>
1102 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1103 #include "ansidecl.h"
1108 # More time-related stuff.
1109 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1110 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1111 #include "ansidecl.h"
1113 #ifdef HAVE_SYS_TIMES_H
1114 #include <sys/times.h>
1116 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1117 if test $ac_cv_struct_tms = yes; then
1118 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1119 [Define if <sys/times.h> defines struct tms.])
1122 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1123 # revisit after autoconf 2.50.
1124 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1125 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1126 #include "ansidecl.h"
1128 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1129 if test $gcc_cv_type_clock_t = yes; then
1130 AC_DEFINE(HAVE_CLOCK_T, 1,
1131 [Define if <time.h> defines clock_t.])
1134 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1135 CFLAGS="$saved_CFLAGS"
1137 gcc_AC_INITFINI_ARRAY
1139 # mkdir takes a single argument on some systems.
1140 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1148 # With Setjmp/Longjmp based exception handling.
1149 AC_ARG_ENABLE(sjlj-exceptions,
1150 [AS_HELP_STRING([--enable-sjlj-exceptions],
1151 [arrange to use setjmp/longjmp exception handling])],
1154 if test $enableval != yes; then
1155 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1160 force_sjlj_exceptions=yes],
1163 force_sjlj_exceptions=yes
1167 force_sjlj_exceptions=no
1170 if test $force_sjlj_exceptions = yes; then
1171 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1172 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1173 [Define 0/1 to force the choice for exception handling model.])
1176 # For platforms with the unwind ABI which includes an unwind library,
1177 # libunwind, we can choose to use the system libunwind.
1178 # config.gcc also contains tests of with_system_libunwind.
1179 GCC_CHECK_UNWIND_GETIPINFO
1181 # --------------------------------------------------------
1182 # Build, host, and target specific configuration fragments
1183 # --------------------------------------------------------
1185 # Collect build-machine-specific information.
1186 . ${srcdir}/config.build
1188 # Collect host-machine-specific information.
1189 . ${srcdir}/config.host
1193 # Collect target-machine-specific information.
1194 . ${srcdir}/config.gcc
1196 extra_objs="${host_extra_objs} ${extra_objs}"
1197 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1199 # Default the target-machine variables that were not explicitly set.
1200 if test x"$tm_file" = x
1201 then tm_file=$cpu_type/$cpu_type.h; fi
1203 if test x"$extra_headers" = x
1204 then extra_headers=; fi
1206 if test x$md_file = x
1207 then md_file=$cpu_type/$cpu_type.md; fi
1209 if test x$out_file = x
1210 then out_file=$cpu_type/$cpu_type.c; fi
1212 if test x"$tmake_file" = x
1213 then tmake_file=$cpu_type/t-$cpu_type
1216 if test x"$dwarf2" = xyes
1217 then tm_file="$tm_file tm-dwarf2.h"
1220 # Say what files are being used for the output code and MD file.
1221 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1222 echo "Using \`$srcdir/config/$md_file' as machine description file."
1224 # If any of the xm_file variables contain nonexistent files, warn
1225 # about them and drop them.
1228 for x in $build_xm_file; do
1229 if test -f $srcdir/config/$x
1231 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1237 for x in $host_xm_file; do
1238 if test -f $srcdir/config/$x
1240 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1246 for x in $xm_file; do
1247 if test -f $srcdir/config/$x
1249 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1255 for f in $tm_file; do
1258 if test $count = ax; then
1259 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1261 echo "Using the following target machine macro files:"
1262 for f in $tm_file; do
1263 echo " $srcdir/config/$f"
1267 if test x$need_64bit_hwint = xyes; then
1268 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1269 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1272 if test x$use_long_long_for_widest_fast_int = xyes; then
1273 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1274 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1275 efficiently supported by the host hardware.])
1279 for f in $host_xm_file; do
1282 if test $count = a; then
1284 elif test $count = ax; then
1285 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1287 echo "Using the following host machine macro files:"
1288 for f in $host_xm_file; do
1289 echo " $srcdir/config/$f"
1292 echo "Using ${out_host_hook_obj} for host machine hooks."
1294 if test "$host_xm_file" != "$build_xm_file"; then
1296 for f in $build_xm_file; do
1299 if test $count = a; then
1301 elif test $count = ax; then
1302 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1304 echo "Using the following build machine macro files:"
1305 for f in $build_xm_file; do
1306 echo " $srcdir/config/$f"
1313 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1314 gcc_cv_mcontext_underscores,
1316 #include <sys/cdefs.h>
1317 #include <sys/signal.h>
1318 #include <ucontext.h>
1319 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1321 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1322 if test $gcc_cv_mcontext_underscores = yes; then
1323 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1324 [mcontext_t fields start with __])
1333 # Check if a valid thread package
1334 case ${enable_threads} in
1337 target_thread_file='single'
1341 target_thread_file='single'
1343 aix | dce | lynx | mipssde | posix | posix95 | rtems | \
1344 single | tpf | vxworks | win32)
1345 target_thread_file=${enable_threads}
1348 echo "${enable_threads} is an unknown thread package" 1>&2
1353 if test x${thread_file} = x; then
1354 # No thread file set by target-specific clauses in config.gcc,
1355 # so use file chosen by default logic above
1356 thread_file=${target_thread_file}
1359 # Make gthr-default.h if we have a thread file.
1361 if test $thread_file != single; then
1362 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1363 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1364 rm -f gthr-default.h-t
1366 mv -f gthr-default.h-t gthr-default.h
1368 gthread_flags=-DHAVE_GTHR_DEFAULT
1370 AC_SUBST(gthread_flags)
1377 if test x$enable___cxa_atexit = xyes || \
1378 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1379 if test x$host = x$target; then
1381 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1382 # keyed to flag_use_cxa_atexit
1387 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1388 [echo "__cxa_atexit can't be enabled on this target"])
1392 # We can't check for __cxa_atexit when building a cross, so assume
1396 if test x$use_cxa_atexit = xyes; then
1397 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1398 [Define if you want to use __cxa_atexit, rather than atexit, to
1399 register C++ destructors for local statics and global objects.
1400 This is essential for fully standards-compliant handling of
1401 destructors, but requires __cxa_atexit in libc.])
1405 # Look for a file containing extra machine modes.
1406 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1407 extra_modes_file='$(srcdir)'/config/${extra_modes}
1408 AC_SUBST(extra_modes_file)
1409 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1410 [Define to the name of a file containing a list of extra machine modes
1411 for this architecture.])
1414 # Convert extra_options into a form suitable for Makefile use.
1417 for f in $extra_options; do
1418 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1419 all_opt_files="$all_opt_files $srcdir/config/$f"
1421 AC_SUBST(extra_opt_files)
1423 # auto-host.h is the file containing items generated by autoconf and is
1424 # the first file included by config.h.
1425 # If host=build, it is correct to have bconfig include auto-host.h
1426 # as well. If host!=build, we are in error and need to do more
1427 # work to find out the build config parameters.
1428 if test x$host = x$build
1430 build_auto=auto-host.h
1432 # We create a subdir, then run autoconf in the subdir.
1433 # To prevent recursion we set host and build for the new
1434 # invocation of configure to the build for this invocation
1441 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1442 *) realsrcdir=../${srcdir};;
1444 saved_CFLAGS="${CFLAGS}"
1445 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1446 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1447 ${realsrcdir}/configure \
1448 --enable-languages=${enable_languages-all} \
1449 --target=$target_alias --host=$build_alias --build=$build_alias
1450 CFLAGS="${saved_CFLAGS}"
1452 # We just finished tests for the build machine, so rename
1453 # the file auto-build.h in the gcc directory.
1454 mv auto-host.h ../auto-build.h
1457 build_auto=auto-build.h
1459 AC_SUBST(build_subdir)
1461 tm_file="${tm_file} defaults.h"
1462 tm_p_file="${tm_p_file} tm-preds.h"
1463 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1464 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1465 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1466 # put this back in temporarily.
1467 xm_file="auto-host.h ansidecl.h ${xm_file}"
1474 # Compile in configure arguments.
1475 if test -f configargs.h ; then
1476 # Being re-configured.
1477 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1478 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1480 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1483 # Double all backslashes and backslash all quotes to turn
1484 # gcc_config_arguments into a C string.
1485 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1486 $gcc_config_arguments
1488 gcc_config_arguments_str=`cat conftest.out`
1491 cat > configargs.h <<EOF
1492 /* Generated automatically. */
1493 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1494 static const char thread_model[] = "$thread_file";
1496 static const struct {
1497 const char *name, *value;
1498 } configure_default_options[] = $configure_default_options;
1503 gcc_BASEVER=`cat $srcdir/BASE-VER`
1504 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1505 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1506 if test -f $srcdir/REVISION ; then
1507 gcc_REVISION=`cat $srcdir/REVISION`
1511 cat > plugin-version.h <<EOF
1512 #include "configargs.h"
1514 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1515 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1516 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1517 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1519 static char basever[] = "$gcc_BASEVER";
1520 static char datestamp[] = "$gcc_DATESTAMP";
1521 static char devphase[] = "$gcc_DEVPHASE";
1522 static char revision[] = "$gcc_REVISION";
1524 /* FIXME plugins: We should make the version information more precise.
1525 One way to do is to add a checksum. */
1527 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1529 configuration_arguments};
1533 # Internationalization
1534 ZW_GNU_GETTEXT_SISTER_DIR
1536 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1537 # -liconv on the link line twice.
1538 case "$LIBINTL" in *$LIBICONV*)
1542 AC_ARG_ENABLE(secureplt,
1543 [AS_HELP_STRING([--enable-secureplt],
1544 [enable -msecure-plt by default for PowerPC])],
1547 AC_ARG_ENABLE(leading-mingw64-underscores,
1548 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1549 [enable leading underscores on 64 bit mingw targets]),
1551 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1552 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1553 [Define if we should use leading underscore on 64 bit mingw targets])])
1556 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1559 AC_ARG_ENABLE(frame-pointer,
1560 [AS_HELP_STRING([--enable-frame-pointer],
1561 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1564 linux* | darwin[[8912]]*)
1565 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1567 enable_frame_pointer=no
1570 enable_frame_pointer=yes
1575 # Windows32 Registry support for specifying GCC installation paths.
1576 AC_ARG_ENABLE(win32-registry,
1577 [AS_HELP_STRING([--disable-win32-registry],
1578 [disable lookup of installation paths in the
1579 Registry on Windows hosts])
1580 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1581 AS_HELP_STRING([--enable-win32-registry=KEY],
1582 [use KEY instead of GCC version as the last portion
1583 of the registry key])],,)
1586 win32 | pe | cygwin* | mingw32* | uwin*)
1587 if test "x$enable_win32_registry" != xno; then
1588 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1591 if test "x$enable_win32_registry" != xno; then
1592 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1593 [Define to 1 if installation paths should be looked up in the Windows
1594 Registry. Ignored on non-Windows hosts.])
1596 if test "x$enable_win32_registry" != xyes \
1597 && test "x$enable_win32_registry" != x; then
1598 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1599 [Define to be the last component of the Windows registry key under which
1600 to look for installation paths. The full key used will be
1601 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1602 The default is the GCC version number.])
1608 # Get an absolute path to the GCC top-level source directory
1609 holddir=`${PWDCMD-pwd}`
1611 topdir=`${PWDCMD-pwd}`
1614 # Conditionalize the makefile for this host machine.
1616 for f in ${host_xmake_file}
1618 if test -f ${srcdir}/config/$f
1620 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1624 # Conditionalize the makefile for this target machine.
1626 for f in ${tmake_file}
1628 if test -f ${srcdir}/config/$f
1630 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1633 tmake_file="${tmake_file_}"
1635 out_object_file=`basename $out_file .c`.o
1636 common_out_object_file=`basename $common_out_file .c`.o
1638 tm_file_list="options.h"
1639 tm_include_list="options.h insn-constants.h"
1640 for f in $tm_file; do
1643 f=`echo $f | sed 's/^..//'`
1644 tm_file_list="${tm_file_list} $f"
1645 tm_include_list="${tm_include_list} $f"
1648 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1649 tm_include_list="${tm_include_list} $f"
1652 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1653 tm_include_list="${tm_include_list} config/$f"
1658 libgcc_tm_file_list=
1659 libgcc_tm_include_list=
1660 for f in $libgcc_tm_file; do
1661 libgcc_tm_file_list="${libgcc_tm_file_list} \$(srcdir)/../libgcc/config/$f"
1662 libgcc_tm_include_list="${libgcc_tm_include_list} ../libgcc/config/$f"
1667 for f in $tm_p_file; do
1670 tm_p_file_list="${tm_p_file_list} $f"
1671 tm_p_include_list="${tm_p_include_list} $f"
1674 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1675 tm_p_include_list="${tm_p_include_list} config/$f"
1681 for f in $xm_file; do
1684 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1685 xm_include_list="${xm_include_list} $f"
1688 xm_file_list="${xm_file_list} $f"
1689 xm_include_list="${xm_include_list} $f"
1692 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1693 xm_include_list="${xm_include_list} config/$f"
1699 host_xm_include_list=
1700 for f in $host_xm_file; do
1703 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1704 host_xm_include_list="${host_xm_include_list} $f"
1707 host_xm_file_list="${host_xm_file_list} $f"
1708 host_xm_include_list="${host_xm_include_list} $f"
1711 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1712 host_xm_include_list="${host_xm_include_list} config/$f"
1718 for f in $build_xm_file; do
1721 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1722 build_xm_include_list="${build_xm_include_list} $f"
1724 auto-build.h | auto-host.h )
1725 build_xm_file_list="${build_xm_file_list} $f"
1726 build_xm_include_list="${build_xm_include_list} $f"
1729 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1730 build_xm_include_list="${build_xm_include_list} config/$f"
1735 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1736 # cross-compiler which does not use the native headers and libraries.
1737 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1738 CROSS= AC_SUBST(CROSS)
1739 ALL=all.internal AC_SUBST(ALL)
1740 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1742 if test "x$with_build_sysroot" != x; then
1743 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1745 # This value is used, even on a native system, because
1746 # CROSS_SYSTEM_HEADER_DIR is just
1747 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1748 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1751 if test x$host != x$target
1753 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1755 SYSTEM_HEADER_DIR=$build_system_header_dir
1756 case "$host","$target" in
1757 # Darwin crosses can use the host system's libraries and headers,
1758 # because of the fat library support. Of course, it must be the
1759 # same version of Darwin on both sides. Allow the user to
1760 # just say --target=foo-darwin without a version number to mean
1761 # "the version on this system".
1762 *-*-darwin*,*-*-darwin*)
1763 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1764 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1765 if test $hostos = $targetos -o $targetos = darwin ; then
1767 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1772 i?86-*-*,x86_64-*-* \
1773 | powerpc*-*-*,powerpc64*-*-*)
1774 CROSS="$CROSS -DNATIVE_CROSS" ;;
1779 if test "x$with_headers" = x; then
1786 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1787 SYSTEM_HEADER_DIR=$build_system_header_dir
1790 # If this is a cross-compiler that does not
1791 # have its own set of headers then define
1794 # If this is using newlib, without having the headers available now,
1795 # then define inhibit_libc in LIBGCC2_CFLAGS.
1796 # This prevents libgcc2 from containing any code which requires libc
1798 : ${inhibit_libc=false}
1799 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1800 test x$with_newlib = xyes ; } &&
1801 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1804 AC_SUBST(inhibit_libc)
1806 # When building gcc with a cross-compiler, we need to adjust things so
1807 # that the generator programs are still built with the native compiler.
1808 # Also, we cannot run fixincludes.
1810 # These are the normal (build=host) settings:
1811 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1812 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1813 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1814 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1816 # And these apply if build != host, or we are generating coverage data
1817 if test x$build != x$host || test "x$coverage_flags" != x
1819 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1820 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1823 # Expand extra_headers to include complete path.
1824 # This substitutes for lots of t-* files.
1826 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1827 for file in ${extra_headers} ; do
1828 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1831 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1832 if test x"$use_gcc_tgmath" = xyes
1833 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1836 # Define collect2 in Makefile.
1837 case $host_can_use_collect2 in
1839 *) collect2='collect2$(exeext)' ;;
1841 AC_SUBST([collect2])
1843 # Add a definition of USE_COLLECT2 if system wants one.
1844 case $use_collect2 in
1845 no) use_collect2= ;;
1848 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1849 xm_defines="${xm_defines} USE_COLLECT2"
1850 case $host_can_use_collect2 in
1852 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1858 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1859 [Define to the name of the LTO plugin DSO that must be
1860 passed to the linker's -plugin=LIB option.])
1862 # ---------------------------
1863 # Assembler & linker features
1864 # ---------------------------
1866 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1867 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1868 # However when ld-new is first executed from the build tree, libtool will
1869 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1870 # to the build tree. While doing this we need to use the previous-stage
1871 # linker, or we have an infinite loop. The presence of a shell script as
1872 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1873 # the gcc/collect-ld script. So we need to know how libtool works, or
1874 # exec-tool will fail.
1876 m4_defun([_LT_CONFIG_COMMANDS], [])
1879 AC_SUBST(enable_fast_install)
1881 # Identify the assembler which will work hand-in-glove with the newly
1882 # built GCC, so that we can examine its features. This is the assembler
1883 # which will be driven by the driver program.
1885 # If build != host, and we aren't building gas in-tree, we identify a
1886 # build->target assembler and hope that it will have the same features
1887 # as the host->target assembler we'll be using.
1888 gcc_cv_gas_major_version=
1889 gcc_cv_gas_minor_version=
1890 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1892 m4_pattern_allow([AS_FOR_TARGET])dnl
1893 AS_VAR_SET_IF(gcc_cv_as,, [
1894 if test -x "$DEFAULT_ASSEMBLER"; then
1895 gcc_cv_as="$DEFAULT_ASSEMBLER"
1896 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1897 && test -f ../gas/Makefile \
1898 && test x$build = x$host; then
1899 gcc_cv_as=../gas/as-new$build_exeext
1900 elif test -x as$build_exeext; then
1901 # Build using assembler in the current directory.
1902 gcc_cv_as=./as$build_exeext
1903 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1904 gcc_cv_as="$AS_FOR_TARGET"
1906 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1909 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1910 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1911 case "$ORIGINAL_AS_FOR_TARGET" in
1912 ./as | ./as$build_exeext) ;;
1913 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1916 AC_MSG_CHECKING(what assembler to use)
1917 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1918 # Single tree build which includes gas. We want to prefer it
1919 # over whatever linker top-level may have detected, since
1920 # we'll use what we're building after installation anyway.
1921 AC_MSG_RESULT(newly built gas)
1923 _gcc_COMPUTE_GAS_VERSION
1924 in_tree_gas_is_elf=no
1925 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1926 || (grep 'obj_format = multi' ../gas/Makefile \
1927 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1929 in_tree_gas_is_elf=yes
1932 AC_MSG_RESULT($gcc_cv_as)
1936 # Identify the linker which will work hand-in-glove with the newly
1937 # built GCC, so that we can examine its features. This is the linker
1938 # which will be driven by the driver program.
1940 # If build != host, and we aren't building gas in-tree, we identify a
1941 # build->target linker and hope that it will have the same features
1942 # as the host->target linker we'll be using.
1943 gcc_cv_gld_major_version=
1944 gcc_cv_gld_minor_version=
1945 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1946 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1948 AS_VAR_SET_IF(gcc_cv_ld,, [
1949 if test -x "$DEFAULT_LINKER"; then
1950 gcc_cv_ld="$DEFAULT_LINKER"
1951 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1952 && test -f ../ld/Makefile \
1953 && test x$build = x$host; then
1954 gcc_cv_ld=../ld/ld-new$build_exeext
1955 elif test -x collect-ld$build_exeext; then
1956 # Build using linker in the current directory.
1957 gcc_cv_ld=./collect-ld$build_exeext
1958 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
1959 gcc_cv_ld="$LD_FOR_TARGET"
1961 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1964 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1965 PLUGIN_LD=`basename $gcc_cv_ld`
1966 AC_ARG_WITH(plugin-ld,
1967 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
1968 [if test x"$withval" != x; then
1969 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1970 PLUGIN_LD="$withval"
1972 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1973 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1975 # Check to see if we are using gold instead of ld
1976 AC_MSG_CHECKING(whether we are using gold)
1978 if test x$gcc_cv_ld != x; then
1979 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
1980 | grep "GNU gold" > /dev/null; then
1984 AC_MSG_RESULT($ld_is_gold)
1986 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1987 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1988 case "$ORIGINAL_LD_FOR_TARGET" in
1989 ./collect-ld | ./collect-ld$build_exeext) ;;
1990 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1993 AC_MSG_CHECKING(what linker to use)
1994 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
1995 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
1996 # Single tree build which includes ld. We want to prefer it
1997 # over whatever linker top-level may have detected, since
1998 # we'll use what we're building after installation anyway.
1999 AC_MSG_RESULT(newly built ld)
2001 in_tree_ld_is_elf=no
2002 if (grep 'EMUL = .*elf' ../ld/Makefile \
2003 || grep 'EMUL = .*linux' ../ld/Makefile \
2004 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2005 in_tree_ld_is_elf=yes
2006 elif test "$ld_is_gold" = yes; then
2007 in_tree_ld_is_elf=yes
2009 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
2012 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
2013 if test x$gcc_cv_gld_version != x; then
2017 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2018 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2021 AC_MSG_RESULT($gcc_cv_ld)
2025 # Figure out what nm we will be using.
2026 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2027 AS_VAR_SET_IF(gcc_cv_nm,, [
2028 if test -f $gcc_cv_binutils_srcdir/configure.in \
2029 && test -f ../binutils/Makefile \
2030 && test x$build = x$host; then
2031 gcc_cv_nm=../binutils/nm-new$build_exeext
2032 elif test -x nm$build_exeext; then
2033 gcc_cv_nm=./nm$build_exeext
2034 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2035 gcc_cv_nm="$NM_FOR_TARGET"
2037 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2040 AC_MSG_CHECKING(what nm to use)
2041 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2042 # Single tree build which includes binutils.
2043 AC_MSG_RESULT(newly built nm)
2046 AC_MSG_RESULT($gcc_cv_nm)
2050 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2051 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2052 case "$ORIGINAL_NM_FOR_TARGET" in
2053 ./nm | ./nm$build_exeext) ;;
2054 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2058 # Figure out what objdump we will be using.
2059 AS_VAR_SET_IF(gcc_cv_objdump,, [
2060 if test -f $gcc_cv_binutils_srcdir/configure.in \
2061 && test -f ../binutils/Makefile \
2062 && test x$build = x$host; then
2063 # Single tree build which includes binutils.
2064 gcc_cv_objdump=../binutils/objdump$build_exeext
2065 elif test -x objdump$build_exeext; then
2066 gcc_cv_objdump=./objdump$build_exeext
2067 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2068 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2070 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2073 AC_MSG_CHECKING(what objdump to use)
2074 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2075 # Single tree build which includes binutils.
2076 AC_MSG_RESULT(newly built objdump)
2077 elif test x$gcc_cv_objdump = x; then
2078 AC_MSG_RESULT(not found)
2080 AC_MSG_RESULT($gcc_cv_objdump)
2083 # Figure out what readelf we will be using.
2084 AS_VAR_SET_IF(gcc_cv_readelf,, [
2085 if test -f $gcc_cv_binutils_srcdir/configure.in \
2086 && test -f ../binutils/Makefile \
2087 && test x$build = x$host; then
2088 # Single tree build which includes binutils.
2089 gcc_cv_readelf=../binutils/readelf$build_exeext
2090 elif test -x readelf$build_exeext; then
2091 gcc_cv_readelf=./readelf$build_exeext
2093 AC_PATH_PROG(gcc_cv_readelf, readelf)
2096 AC_MSG_CHECKING(what readelf to use)
2097 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2098 # Single tree build which includes binutils.
2099 AC_MSG_RESULT(newly built readelf)
2100 elif test x$gcc_cv_readelf = x; then
2101 AC_MSG_RESULT(not found)
2103 AC_MSG_RESULT($gcc_cv_readelf)
2106 # Figure out what assembler alignment features are present.
2107 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2111 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2112 [Define if your assembler supports .balign and .p2align.])])
2114 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2117 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2118 [Define if your assembler supports specifying the maximum number
2119 of bytes to skip when using the GAS .p2align command.])])
2121 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2124 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2125 [Define if your assembler supports .literal16.])])
2127 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2129 [conftest_label1: .word 0
2131 conftest_label2: .word 0
2133 [if test x$gcc_cv_nm != x; then
2134 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2135 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2136 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2138 else gcc_cv_as_subsection_m1=yes
2140 rm -f conftest.nm1 conftest.nm2
2142 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2143 [Define if your assembler supports .subsection and .subsection -1 starts
2144 emitting at the beginning of your section.])])
2146 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2149 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2151 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2153 [ .weakref foobar, barfnot],,
2154 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2156 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2159 .NSUBSPA $CODE$,COMDAT],,
2160 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2162 # .hidden needs to be supported in both the assembler and the linker,
2163 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2164 # This is irritatingly difficult to feature test for; we have to check the
2165 # date string after the version number. If we've got an in-tree
2166 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2168 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2169 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2173 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2174 # STV_HIDDEN, so disable .hidden support if so.
2176 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2177 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2178 cat > conftest.s <<EOF
2185 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2186 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2187 grep '\.hidden default' > /dev/null; then
2190 gcc_cv_as_hidden=yes
2193 # Assume bug is present if objdump is missing.
2198 gcc_cv_as_hidden=yes
2203 # Darwin as has some visibility support, though with a different syntax.
2204 gcc_cv_as_hidden=yes
2208 # gnu_indirect_function type is an extension proposed at
2209 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2210 # selection of function implementation
2211 AC_ARG_ENABLE(gnu-indirect-function,
2212 [AS_HELP_STRING([--enable-gnu-indirect-function],
2213 [enable the use of the @gnu_indirect_function to glibc systems])],
2214 [case $enable_gnu_indirect_function in
2216 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2217 Valid choices are 'yes' and 'no'.]) ;;
2219 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2220 if test x$enable_gnu_indirect_function = xyes; then
2221 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2222 [Define if your system supports gnu indirect functions.])
2226 if test $in_tree_ld != yes ; then
2227 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2228 if echo "$ld_ver" | grep GNU > /dev/null; then
2229 if test x"$ld_is_gold" = xyes; then
2230 # GNU gold --version looks like this:
2232 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2234 # We extract the binutils version which is more familiar and specific
2235 # than the gold version.
2236 ld_vers=`echo $ld_ver | sed -n \
2237 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2239 # GNU ld --version looks like this:
2241 # GNU ld (GNU Binutils) 2.21.51.20110225
2242 ld_vers=`echo $ld_ver | sed -n \
2243 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2245 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2246 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2247 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2248 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2253 # Solaris 2 ld -V output looks like this for a regular version:
2255 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2257 # but test versions add stuff at the end:
2259 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2261 ld_ver=`$gcc_cv_ld -V 2>&1`
2262 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2263 ld_vers=`echo $ld_ver | sed -n \
2264 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2265 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2266 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2274 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2275 [[if test $in_tree_ld = yes ; then
2277 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2278 && test $in_tree_ld_is_elf = yes; then
2279 gcc_cv_ld_hidden=yes
2282 gcc_cv_ld_hidden=yes
2283 if test x"$ld_is_gold" = xyes; then
2285 elif echo "$ld_ver" | grep GNU > /dev/null; then
2286 if test 0"$ld_date" -lt 20020404; then
2287 if test -n "$ld_date"; then
2288 # If there was date string, but was earlier than 2002-04-04, fail
2290 elif test -z "$ld_vers"; then
2291 # If there was no date string nor ld version number, something is wrong
2294 test -z "$ld_vers_patch" && ld_vers_patch=0
2295 if test "$ld_vers_major" -lt 2; then
2297 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2298 gcc_cv_ld_hidden="no"
2299 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2307 # Darwin ld has some visibility support.
2308 gcc_cv_ld_hidden=yes
2310 hppa64*-*-hpux* | ia64*-*-hpux*)
2311 gcc_cv_ld_hidden=yes
2314 # .hidden support was backported to Solaris 8, starting with ld
2316 if test "$ld_vers_minor" -ge 276; then
2317 gcc_cv_ld_hidden=yes
2322 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2323 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2324 # .symbolic was only added in Solaris 9 12/02.
2325 gcc_cv_ld_hidden=yes
2333 libgcc_visibility=no
2334 AC_SUBST(libgcc_visibility)
2335 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2336 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2337 libgcc_visibility=yes
2338 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2339 [Define if your assembler and linker support .hidden.])
2342 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2343 gcc_cv_ld_ro_rw_mix=unknown
2344 if test $in_tree_ld = yes ; then
2345 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2346 && test $in_tree_ld_is_elf = yes; then
2347 gcc_cv_ld_ro_rw_mix=read-write
2349 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2350 echo '.section myfoosect, "a"' > conftest1.s
2351 echo '.section myfoosect, "aw"' > conftest2.s
2352 echo '.byte 1' >> conftest2.s
2353 echo '.section myfoosect, "a"' > conftest3.s
2354 echo '.byte 0' >> conftest3.s
2355 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2356 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2357 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2358 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2359 conftest2.o conftest3.o > /dev/null 2>&1; then
2360 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2361 | sed -e '/myfoosect/!d' -e N`
2362 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2363 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2364 gcc_cv_ld_ro_rw_mix=read-only
2366 gcc_cv_ld_ro_rw_mix=read-write
2371 rm -f conftest.* conftest[123].*
2374 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2375 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2376 [Define if your linker links a mix of read-only
2377 and read-write sections into a read-write section.])
2379 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2381 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2382 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2390 [[# GAS versions before 2.11 do not support uleb128,
2391 # despite appearing to.
2392 # ??? There exists an elf-specific test that will crash
2393 # the assembler. Perhaps it's better to figure out whether
2394 # arbitrary sections are supported and try the test.
2395 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2396 if echo "$as_ver" | grep GNU > /dev/null; then
2397 as_vers=`echo $as_ver | sed -n \
2398 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2399 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2400 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2401 if test $as_major -eq 2 && test $as_minor -lt 11
2403 else gcc_cv_as_leb128=yes
2406 [AC_DEFINE(HAVE_AS_LEB128, 1,
2407 [Define if your assembler supports .sleb128 and .uleb128.])])
2409 # Check if we have assembler support for unwind directives.
2410 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2417 .cfi_escape 1, 2, 3, 4, 5
2421 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2422 # read-only and read-write sections, we need to make sure that the
2423 # assembler used emits read-write .eh_frame sections.
2424 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2425 if test "x$gcc_cv_objdump" != x; then
2426 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2427 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2428 gcc_cv_as_cfi_directive=no
2431 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2432 # On Solaris/x86, make sure that GCC and gas agree on using
2433 # read-only .eh_frame sections for 64-bit.
2434 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2435 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2436 sed -e /.eh_frame/!d -e N | \
2437 grep READONLY > /dev/null; then
2438 gcc_cv_as_cfi_directive=yes
2440 gcc_cv_as_cfi_directive=no
2444 gcc_cv_as_cfi_directive=yes
2449 # no objdump, err on the side of caution
2450 gcc_cv_as_cfi_directive=no
2453 gcc_cv_as_cfi_directive=yes
2457 gcc_cv_as_cfi_directive=yes
2460 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2461 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2465 .cfi_adjust_cfa_offset 64
2467 .cfi_adjust_cfa_offset 128
2470 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2471 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2472 gcc_cv_as_cfi_advance_working=yes
2476 # no objdump, err on the side of caution
2477 gcc_cv_as_cfi_advance_working=no
2479 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2480 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2481 [`if test $gcc_cv_as_cfi_directive = yes \
2482 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2483 [Define 0/1 if your assembler supports CFI directives.])
2485 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2486 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2487 gcc_cv_as_cfi_personality_directive, ,,
2490 .cfi_personality 0, symbol
2492 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2493 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2494 then echo 1; else echo 0; fi`],
2495 [Define 0/1 if your assembler supports .cfi_personality.])
2497 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2498 gcc_cv_as_cfi_sections_directive, ,,
2500 .cfi_sections .debug_frame, .eh_frame
2504 win32 | pe | cygwin* | mingw32* | uwin*)
2505 # Need to check that we generated the correct relocation for the
2506 # .debug_frame section. This was fixed for binutils 2.21.
2507 gcc_cv_as_cfi_sections_directive=no
2508 if test "x$gcc_cv_objdump" != x; then
2509 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2510 grep secrel > /dev/null; then
2511 gcc_cv_as_cfi_sections_directive=yes
2516 gcc_cv_as_cfi_sections_directive=yes
2519 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2520 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2521 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2522 then echo 1; else echo 0; fi`],
2523 [Define 0/1 if your assembler supports .cfi_sections.])
2525 # GAS versions up to and including 2.11.0 may mis-optimize
2527 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2535 .section .eh_frame,"aw",@progbits
2537 .4byte .LECIE1-.LSCIE1
2551 .4byte .LEFDE1-.LASFDE1
2553 .4byte .LASFDE1-__FRAME_BEGIN__
2561 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2562 cat > conftest.lit <<EOF
2563 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2564 0010 01000000 12000000 18000000 00000000 ................
2565 0020 08000000 04080000 0044 .........D @&t@
2567 cat > conftest.big <<EOF
2568 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2569 0010 00000001 00000012 00000018 00000000 ................
2570 0020 00000008 04000000 0844 .........D @&t@
2572 # If the assembler didn't choke, and we can objdump,
2573 # and we got the correct data, then succeed.
2574 # The text in the here-document typically retains its unix-style line
2575 # endings, while the output of objdump will use host line endings.
2576 # Therefore, use diff -b for the comparisons.
2577 if test x$gcc_cv_objdump != x \
2578 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2579 | tail -3 > conftest.got \
2580 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2581 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2583 gcc_cv_as_eh_frame=yes
2584 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2585 gcc_cv_as_eh_frame=buggy
2587 # Uh oh, what do we do now?
2588 gcc_cv_as_eh_frame=no
2591 if test $gcc_cv_as_eh_frame = buggy; then
2592 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2593 [Define if your assembler mis-optimizes .eh_frame data.])
2596 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2597 [elf,2,12,0], [--fatal-warnings],
2598 [.section .rodata.str, "aMS", @progbits, 1])
2599 if test $gcc_cv_as_shf_merge = no; then
2600 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2601 [elf,2,12,0], [--fatal-warnings],
2602 [.section .rodata.str, "aMS", %progbits, 1])
2604 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2605 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2606 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2608 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2609 gcc_cv_as_comdat_group,
2610 [elf,2,16,0], [--fatal-warnings],
2611 [.section .text,"axG",@progbits,.foo,comdat])
2612 if test $gcc_cv_as_comdat_group = yes; then
2613 gcc_cv_as_comdat_group_percent=no
2614 gcc_cv_as_comdat_group_group=no
2616 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2617 gcc_cv_as_comdat_group_percent,
2618 [elf,2,16,0], [--fatal-warnings],
2619 [.section .text,"axG",%progbits,.foo,comdat])
2620 if test $gcc_cv_as_comdat_group_percent = yes; then
2621 gcc_cv_as_comdat_group_group=no
2624 # Sun as uses a completely different syntax.
2629 .group foo,".text%foo",#comdat
2630 .section ".text%foo", #alloc,#execinstr,#progbits
2635 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2637 .group foo,.text%foo,#comdat
2638 .section .text%foo, "ax", @progbits
2644 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2645 gcc_cv_as_comdat_group_group,
2651 if test x"$ld_is_gold" = xyes; then
2653 elif test $in_tree_ld = yes ; then
2655 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2656 && test $in_tree_ld_is_elf = yes; then
2659 elif echo "$ld_ver" | grep GNU > /dev/null; then
2661 if test 0"$ld_date" -lt 20050308; then
2662 if test -n "$ld_date"; then
2663 # If there was date string, but was earlier than 2005-03-08, fail
2665 elif test "$ld_vers_major" -lt 2; then
2667 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2674 *-*-solaris2.1[1-9]*)
2676 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2677 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2680 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2681 # least ld version 1.2267.
2682 if test "$ld_vers_major" -gt 1; then
2684 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2686 elif test "$ld_vers_minor" -ge 2267; then
2691 # Assume linkers other than GNU ld don't support COMDAT group.
2697 # Allow overriding the automatic COMDAT group tests above.
2698 AC_ARG_ENABLE(comdat,
2699 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2700 [comdat_group="$enable_comdat"])
2701 if test $comdat_group = no; then
2702 gcc_cv_as_comdat_group=no
2703 gcc_cv_as_comdat_group_percent=no
2704 gcc_cv_as_comdat_group_group=no
2706 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2707 [`if test $gcc_cv_as_comdat_group = yes \
2708 || test $gcc_cv_as_comdat_group_percent = yes \
2709 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2710 [Define 0/1 if your assembler and linker support COMDAT groups.])
2712 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2713 gcc_cv_as_discriminator,
2717 .loc 1 1 0 discriminator 1],,
2718 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2719 [Define if your assembler supports the .loc discriminator sub-directive.])])
2721 # Thread-local storage - the check is heavily parameterized.
2730 .section ".tdata","awT",@progbits
2733 ldq $27,__tls_get_addr($29) !literal!1
2734 lda $16,foo($29) !tlsgd!1
2735 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2736 ldq $27,__tls_get_addr($29) !literal!2
2737 lda $16,foo($29) !tlsldm!2
2738 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2739 ldq $1,foo($29) !gotdtprel
2740 ldah $2,foo($29) !dtprelhi
2741 lda $3,foo($2) !dtprello
2742 lda $4,foo($29) !dtprel
2743 ldq $1,foo($29) !gottprel
2744 ldah $2,foo($29) !tprelhi
2745 lda $3,foo($2) !tprello
2746 lda $4,foo($29) !tprel'
2749 tls_as_opt=--fatal-warnings
2751 cris-*-*|crisv32-*-*)
2753 .section ".tdata","awT",@progbits
2760 tls_as_opt=--fatal-warnings
2764 .section ".tdata","awT",@progbits
2776 .section ".tdata","awT",@progbits
2780 addil LT%foo-$tls_gdidx$,gp
2781 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2784 addil LT%foo-$tls_ldidx$,gp
2786 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2787 addil LR%foo-$tls_dtpoff$,%ret0
2788 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2790 addil LT%foo-$tls_ieoff$,gp
2791 ldw RT%foo-$tls_ieoff$(%r1),%t2
2794 addil LR%foo-$tls_leoff$,%t1
2795 ldo RR%foo-$tls_leoff$(%r1),%t2'
2798 tls_as_opt=--fatal-warnings
2802 .section ".tdata","awT",%progbits
2813 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2815 i[34567]86-*-solaris2.*)
2817 tga_func=___tls_get_addr
2819 x86_64-*-solaris2.1[0-9]*)
2821 tga_func=__tls_get_addr
2827 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2829 .section .tdata,"awt",@progbits'
2833 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2834 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2838 .section ".tdata","awT",@progbits'
2841 tls_as_opt="--fatal-warnings"
2843 conftest_s="$conftest_s
2847 leal foo@tlsgd(,%ebx,1), %eax
2848 leal foo@tlsldm(%ebx), %eax
2849 leal foo@dtpoff(%eax), %edx
2850 movl foo@gottpoff(%ebx), %eax
2851 subl foo@gottpoff(%ebx), %eax
2852 addl foo@gotntpoff(%ebx), %eax
2853 movl foo@indntpoff, %eax
2854 movl \$foo@tpoff, %eax
2855 subl \$foo@tpoff, %eax
2856 leal foo@ntpoff(%ecx), %eax"
2860 .section ".tdata","awT",@progbits
2864 leaq foo@TLSGD(%rip), %rdi
2865 leaq foo@TLSLD(%rip), %rdi
2866 leaq foo@DTPOFF(%rax), %rdx
2867 movq foo@GOTTPOFF(%rip), %rax
2868 movq $foo@TPOFF, %rax'
2871 tls_as_opt=--fatal-warnings
2875 .section ".tdata","awT",@progbits
2878 addl r16 = @ltoff(@dtpmod(foo#)), gp
2879 addl r17 = @ltoff(@dtprel(foo#)), gp
2880 addl r18 = @ltoff(@tprel(foo#)), gp
2881 addl r19 = @dtprel(foo#), gp
2882 adds r21 = @dtprel(foo#), r13
2883 movl r23 = @dtprel(foo#)
2884 addl r20 = @tprel(foo#), gp
2885 adds r22 = @tprel(foo#), r13
2886 movl r24 = @tprel(foo#)'
2889 tls_as_opt=--fatal-warnings
2893 .section .tdata,"awT",@progbits
2897 addiu $4, $28, %tlsgd(x)
2898 addiu $4, $28, %tlsldm(x)
2899 lui $4, %dtprel_hi(x)
2900 addiu $4, $4, %dtprel_lo(x)
2901 lw $4, %gottprel(x)($28)
2902 lui $4, %tprel_hi(x)
2903 addiu $4, $4, %tprel_lo(x)'
2906 tls_as_opt='-32 --fatal-warnings'
2910 .section .tdata,"awT",@progbits
2915 move.l x@TLSGD(%a5),%a0
2916 move.l x@TLSLDM(%a5),%a0
2917 move.l x@TLSLDO(%a5),%a0
2918 move.l x@TLSIE(%a5),%a0
2919 move.l x@TLSLE(%a5),%a0'
2922 tls_as_opt='--fatal-warnings'
2926 .section ".tdata","awT",@progbits
2934 addi 3,31,ld0@got@tlsgd
2936 addi 3,31,x1@got@tlsld
2939 addis 9,3,x2@dtprel@ha
2940 addi 9,9,x2@dtprel@l
2941 lwz 9,x3@got@tprel(31)
2944 addis 9,2,x2@tprel@ha
2945 addi 9,9,x2@tprel@l'
2948 tls_as_opt="-a32 --fatal-warnings"
2952 .section ".tdata","awT",@progbits
2960 addi 3,2,ld0@got@tlsgd
2966 addi 3,2,x1@got@tlsld
2972 addis 9,3,x2@dtprel@ha
2973 addi 9,9,x2@dtprel@l
2976 ld 9,x3@got@dtprel(2)
2982 tls_as_opt="-a64 --fatal-warnings"
2986 .section ".tdata","awT",@progbits
2995 l %r1,foo@GOTNTPOFF(%r12)
2996 l %r1,0(%r1):tls_load:foo
2997 bas %r14,0(%r1,%r13):tls_gdcall:foo
2998 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3001 tls_as_opt="-m31 --fatal-warnings"
3005 .section ".tdata","awT",@progbits
3013 lg %r1,foo@GOTNTPOFF(%r12)
3014 larl %r1,foo@INDNTPOFF
3015 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3016 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3019 tls_as_opt="-m64 -Aesame --fatal-warnings"
3021 sh-*-* | sh[34]-*-*)
3023 .section ".tdata","awT",@progbits
3033 tls_as_opt=--fatal-warnings
3037 sparc*-sun-solaris2.*)
3039 tga_func=__tls_get_addr
3045 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3047 .section ".tdata",#alloc,#write,#tls'
3052 .section ".tdata","awT",@progbits'
3055 tls_as_opt="-32 --fatal-warnings"
3057 conftest_s="$conftest_s
3060 sethi %tgd_hi22(foo), %o0
3061 add %o0, %tgd_lo10(foo), %o1
3062 add %l7, %o1, %o0, %tgd_add(foo)
3063 call __tls_get_addr, %tgd_call(foo)
3064 sethi %tldm_hi22(foo), %l1
3065 add %l1, %tldm_lo10(foo), %l2
3066 add %l7, %l2, %o0, %tldm_add(foo)
3067 call __tls_get_addr, %tldm_call(foo)
3068 sethi %tldo_hix22(foo), %l3
3069 xor %l3, %tldo_lox10(foo), %l4
3070 add %o0, %l4, %l5, %tldo_add(foo)
3071 sethi %tie_hi22(foo), %o3
3072 add %o3, %tie_lo10(foo), %o3
3073 ld [%l7 + %o3], %o2, %tie_ld(foo)
3074 add %g7, %o2, %o4, %tie_add(foo)
3075 sethi %tle_hix22(foo), %l1
3076 xor %l1, %tle_lox10(foo), %o5
3077 ld [%g7 + %o5], %o1"
3081 .section ".tdata","awT",@progbits
3084 movi a8, foo@TLSFUNC
3085 movi a10, foo@TLSARG
3086 callx8.tls a8, foo@TLSCALL'
3093 if test "x$enable_tls" = xno ; then
3094 : # TLS explicitly disabled.
3095 elif test "x$enable_tls" = xyes ; then
3096 set_have_as_tls=yes # TLS explicitly enabled.
3097 elif test -z "$tls_first_major"; then
3098 : # If we don't have a check, assume no support.
3100 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3101 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3102 [set_have_as_tls=yes])
3106 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3107 # with TLS support are in use, native TLS cannot work.
3111 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3112 # gld with TLS support are in use, native TLS cannot work.
3115 # TLS was introduced in the Solaris 9 FCS release and backported to
3116 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3117 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3118 # ld and GCC don't support any longer.
3120 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3122 # Check ld and ld.so.1 TLS support.
3123 if echo "$ld_ver" | grep GNU > /dev/null; then
3124 # Assume all interesting versions of GNU ld have TLS support.
3125 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3129 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3131 min_tls_ld_vers_minor=280
3133 # Solaris 8/SPARC ld has TLS support since version 1.272.
3134 sparc*-*-solaris2.8)
3135 min_tls_ld_vers_minor=272
3137 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3139 min_tls_ld_vers_minor=374
3141 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3142 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3143 min_tls_ld_vers_minor=343
3146 if test "$ld_vers_major" -gt 1 || \
3147 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3153 AC_MSG_RESULT($ld_tls_support)
3156 save_LDFLAGS="$LDFLAGS"
3160 AC_MSG_CHECKING(alternate thread library)
3162 # TLS support was backported to Solaris 8 patches, but only lives in
3163 # the alternate thread library which became the default in Solaris 9.
3164 # We want to always use that, irrespective of TLS support.
3166 # Take multilib subdir into account. There's no spec to handle
3167 # this. The 64 symlink exists since Solaris 8.
3168 lwp_dir=/usr/lib/lwp
3169 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3170 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3177 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3178 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3179 [Define to the linker flags to use for -pthread.])
3180 AC_MSG_RESULT($lwp_dir)
3182 AC_MSG_CHECKING(library containing $tga_func)
3183 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3184 # (32-bit x86) only lived in libthread, so check for that. Keep
3185 # set_have_as_tls if found, disable if not.
3186 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3187 # Clear LIBS if we cannot support TLS.
3188 if test $set_have_as_tls = no; then
3191 # Always define LIB_TLS_SPEC, even without TLS support.
3192 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3193 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3194 AC_MSG_RESULT($LIBS)
3197 LDFLAGS="$save_LDFLAGS"
3200 if test $set_have_as_tls = yes ; then
3201 AC_DEFINE(HAVE_AS_TLS, 1,
3202 [Define if your assembler and linker support thread-local storage.])
3205 # Target-specific assembler checks.
3207 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3208 gcc_cv_ld_static_dynamic=no
3209 gcc_cv_ld_static_option='-Bstatic'
3210 gcc_cv_ld_dynamic_option='-Bdynamic'
3211 if test $in_tree_ld = yes ; then
3212 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3213 gcc_cv_ld_static_dynamic=yes
3215 elif test x$gcc_cv_ld != x; then
3216 # Check if linker supports -Bstatic/-Bdynamic option
3217 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3218 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3219 gcc_cv_ld_static_dynamic=yes
3222 # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic.
3224 gcc_cv_ld_static_dynamic=yes
3225 gcc_cv_ld_static_option="-noso"
3226 gcc_cv_ld_dynamic_option="-so_archive"
3228 # IRIX 6 ld supports -Bstatic/-Bdynamic.
3230 gcc_cv_ld_static_dynamic=yes
3232 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3234 gcc_cv_ld_static_dynamic=yes
3239 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3240 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3241 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3242 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3243 [Define to the linker option to disable use of shared objects.])
3244 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3245 [Define to the linker option to enable use of shared objects.])
3247 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3249 if test x"$demangler_in_ld" = xyes; then
3250 AC_MSG_CHECKING(linker --demangle support)
3251 gcc_cv_ld_demangle=no
3252 if test $in_tree_ld = yes; then
3253 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3254 gcc_cv_ld_demangle=yes
3256 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3257 # Check if the GNU linker supports --demangle option
3258 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3259 gcc_cv_ld_demangle=yes
3262 if test x"$gcc_cv_ld_demangle" = xyes; then
3263 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3264 [Define if your linker supports --demangle option.])
3266 AC_MSG_RESULT($gcc_cv_ld_demangle)
3269 AC_MSG_CHECKING(linker plugin support)
3271 if test -f liblto_plugin.la; then
3272 save_ld_ver="$ld_ver"
3273 save_ld_vers_major="$ld_vers_major"
3274 save_ld_vers_minor="$ld_vers_minor"
3275 save_ld_is_gold="$ld_is_gold"
3279 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3281 # FIXME: ld_is_gold?
3282 ld_vers_major="$gcc_cv_gld_major_version"
3283 ld_vers_minor="$gcc_cv_gld_minor_version"
3285 # Determine plugin linker version.
3286 # FIXME: Partial duplicate from above, generalize.
3288 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3289 if echo "$ld_ver" | grep GNU > /dev/null; then
3290 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3292 ld_vers=`echo $ld_ver | sed -n \
3293 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3295 ld_vers=`echo $ld_ver | sed -n \
3296 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3298 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3299 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3304 # Determine plugin support.
3305 if echo "$ld_ver" | grep GNU > /dev/null; then
3306 # Require GNU ld or gold 2.21+ for plugin support by default.
3307 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3309 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3310 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3315 ld_ver="$save_ld_ver"
3316 ld_vers_major="$save_ld_vers_major"
3317 ld_vers_minor="$save_ld_vers_minor"
3318 ld_is_gold="$save_ld_is_gold"
3320 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3321 [Define to the level of your linker's plugin support.])
3322 AC_MSG_RESULT($gcc_cv_lto_plugin)
3325 # All TARGET_ABI_OSF targets.
3326 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3327 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3328 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3331 extbl $3, $2, $3 !lituse_bytoff!1
3332 ldq $2, a($29) !literal!1
3333 ldq $4, b($29) !literal!2
3334 ldq_u $3, 0($2) !lituse_base!1
3335 ldq $27, f($29) !literal!5
3336 jsr $26, ($27), f !lituse_jsr!5
3337 ldah $29, 0($26) !gpdisp!3
3338 lda $0, c($29) !gprel
3339 ldah $1, d($29) !gprelhigh
3340 lda $1, d($1) !gprellow
3341 lda $29, 0($29) !gpdisp!3],,
3342 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3343 [Define if your assembler supports explicit relocations.])])
3344 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3345 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3348 ldq $27, a($29) !literal!1
3349 jsr $26, ($27), a !lituse_jsrdirect!1],,
3350 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3351 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3355 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3356 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3357 [-no-mul-bug-abort], [.text],,
3358 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3359 [Define if your assembler supports the -no-mul-bug-abort option.])])
3363 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3364 [.register %g2, #scratch],,
3365 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3366 [Define if your assembler supports .register.])])
3368 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3370 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3371 [Define if your assembler supports -relax option.])])
3373 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3374 gcc_cv_as_sparc_gotdata_op,,
3381 sethi %gdop_hix22(foo), %g1
3382 xor %g1, %gdop_lox10(foo), %g1
3383 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3384 [if test x$gcc_cv_ld != x \
3385 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3386 if test x$gcc_cv_objdump != x; then
3387 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3388 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3389 gcc_cv_as_sparc_gotdata_op=no
3391 gcc_cv_as_sparc_gotdata_op=yes
3396 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3397 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3399 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3400 gcc_cv_as_sparc_ua_pcrel,,
3408 .uaword %r_disp32(foo)],
3409 [if test x$gcc_cv_ld != x \
3410 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3411 gcc_cv_as_sparc_ua_pcrel=yes
3414 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3415 [Define if your assembler and linker support unaligned PC relative relocs.])
3417 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3418 gcc_cv_as_sparc_ua_pcrel_hidden,,
3423 .uaword %r_disp32(foo)
3424 .byte 0x32, 0x33, 0x34
3429 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3430 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3431 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3432 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3433 if $gcc_cv_objdump -R conftest 2> /dev/null \
3434 | grep 'DISP32' > /dev/null 2>&1; then
3437 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3441 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3442 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3443 ]) # unaligned pcrel relocs
3445 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3446 gcc_cv_as_sparc_offsetable_lo10,,
3449 or %g1, %lo(ab) + 12, %g1
3450 or %g1, %lo(ab + 12), %g1],
3451 [if test x$gcc_cv_objdump != x \
3452 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3453 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3454 gcc_cv_as_sparc_offsetable_lo10=yes
3456 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3457 [Define if your assembler supports offsetable %lo().])])
3461 i[34567]86-*-* | x86_64-*-*)
3465 # Full C++ conformance when using a shared libstdc++-v3 requires some
3466 # support from the Cygwin DLL, which in more recent versions exports
3467 # wrappers to aid in interposing and redirecting operators new, delete,
3468 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3469 # are configuring for a version of Cygwin that exports the wrappers.
3470 if test x$host = x$target; then
3471 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3473 # Can't check presence of libc functions during cross-compile, so
3474 # we just have to assume we're building for an up-to-date target.
3475 gcc_ac_cygwin_dll_wrappers=yes
3477 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3478 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3479 [Define if you want to generate code by default that assumes that the
3480 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3483 cygwin* | pe | mingw32*)
3484 # Recent binutils allows the three-operand form of ".comm" on PE. This
3485 # definition is used unconditionally to initialise the default state of
3486 # the target option variable that governs usage of the feature.
3487 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3488 [2,19,52],,[.comm foo,1,32])
3489 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3490 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3491 [Define if your assembler supports specifying the alignment
3492 of objects allocated using the GAS .comm command.])
3493 # Used for DWARF 2 in PE
3494 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3495 gcc_cv_as_ix86_pe_secrel32,
3501 [if test x$gcc_cv_ld != x \
3502 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3503 gcc_cv_as_ix86_pe_secrel32=yes
3506 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3507 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3508 # Test if the assembler supports the extended form of the .section
3509 # directive that specifies section alignment. LTO support uses this,
3510 # but normally only after installation, so we warn but don't fail the
3511 # configure if LTO is enabled but the assembler does not support it.
3512 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3513 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3514 if test x$gcc_cv_as_section_has_align != xyes; then
3515 case ",$enable_languages," in
3517 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3524 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3525 gcc_cv_as_ix86_filds,,,
3526 [filds mem; fists mem],,
3527 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3528 [Define if your assembler uses filds and fists mnemonics.])])
3530 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3531 gcc_cv_as_ix86_fildq,,,
3532 [fildq mem; fistpq mem],,
3533 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3534 [Define if your assembler uses fildq and fistq mnemonics.])])
3536 gcc_GAS_CHECK_FEATURE([cmov syntax],
3537 gcc_cv_as_ix86_cmov_sun_syntax,,,
3538 [cmovl.l %edx, %eax],,
3539 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3540 [Define if your assembler supports the Sun syntax for cmov.])])
3542 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3543 gcc_cv_as_ix86_ffreep,,,
3545 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3546 [Define if your assembler supports the ffreep mnemonic.])])
3548 gcc_GAS_CHECK_FEATURE([.quad directive],
3549 gcc_cv_as_ix86_quad,,,
3551 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3552 [Define if your assembler supports the .quad directive.])])
3554 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3555 gcc_cv_as_ix86_sahf,,,
3558 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3559 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3561 gcc_GAS_CHECK_FEATURE([swap suffix],
3562 gcc_cv_as_ix86_swap,,,
3563 [movl.s %esp, %ebp],,
3564 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3565 [Define if your assembler supports the swap suffix.])])
3567 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3568 gcc_cv_as_ix86_diff_sect_delta,,,
3576 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3577 [Define if your assembler supports the subtraction of symbols in different sections.])])
3579 # These two are used unconditionally by i386.[ch]; it is to be defined
3580 # to 1 if the feature is present, 0 otherwise.
3581 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3582 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3588 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3589 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3590 [Define true if the assembler supports '.long foo@GOTOFF'.])
3592 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3593 gcc_cv_as_ix86_rep_lock_prefix,,,
3595 lock addl %edi, (%eax,%esi)
3596 lock orl $0, (%esp)],,
3597 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3598 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3600 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3601 gcc_cv_as_ix86_tlsgdplt,,,
3602 [call tls_gd@tlsgdplt],,
3603 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3604 [Define if your assembler supports @tlsgdplt.])])
3606 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3607 gcc_cv_as_ix86_tlsldmplt,,,
3608 [call tls_ld@tlsldmplt],,
3609 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3610 [Define if your assembler supports @tlsldmplt.])])
3615 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3616 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3618 addl r15 = @ltoffx(x#), gp
3620 ld8.mov r16 = [[r15]], x#],,
3621 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3622 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3628 *-*-aix*) conftest_s=' .machine "pwr5"
3632 gcc_GAS_CHECK_FEATURE([.machine directive support],
3633 gcc_cv_as_machine_directive,,,
3634 [ .machine ppc7400])
3635 if test x$gcc_cv_as_machine_directive != xyes; then
3636 echo "*** This target requires an assembler supporting \".machine\"" >&2
3637 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3638 test x$build = x$target && exit 1
3642 *) conftest_s=' .machine power4
3647 gcc_GAS_CHECK_FEATURE([mfcr field support],
3648 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3650 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3651 [Define if your assembler supports mfcr field.])])
3654 *-*-aix*) conftest_s=' .machine "pwr5"
3657 *) conftest_s=' .machine power5
3662 gcc_GAS_CHECK_FEATURE([popcntb support],
3663 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3665 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3666 [Define if your assembler supports popcntb field.])])
3669 *-*-aix*) conftest_s=' .machine "pwr5x"
3672 *) conftest_s=' .machine power5
3677 gcc_GAS_CHECK_FEATURE([fp round support],
3678 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3680 [AC_DEFINE(HAVE_AS_FPRND, 1,
3681 [Define if your assembler supports fprnd.])])
3684 *-*-aix*) conftest_s=' .machine "pwr6"
3687 *) conftest_s=' .machine power6
3692 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3693 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3695 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3696 [Define if your assembler supports mffgpr and mftgpr.])])
3699 *-*-aix*) conftest_s=' .csect .text[[PR]]
3701 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3705 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3706 *) conftest_s=' .text
3708 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3711 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3712 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3714 [AC_DEFINE(HAVE_AS_REL16, 1,
3715 [Define if your assembler supports R_PPC_REL16 relocs.])])
3718 *-*-aix*) conftest_s=' .machine "pwr6"
3721 *) conftest_s=' .machine power6
3726 gcc_GAS_CHECK_FEATURE([compare bytes support],
3727 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3729 [AC_DEFINE(HAVE_AS_CMPB, 1,
3730 [Define if your assembler supports cmpb.])])
3733 *-*-aix*) conftest_s=' .machine "pwr6"
3736 *) conftest_s=' .machine power6
3741 gcc_GAS_CHECK_FEATURE([decimal float support],
3742 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3744 [AC_DEFINE(HAVE_AS_DFP, 1,
3745 [Define if your assembler supports DFP instructions.])])
3748 *-*-aix*) conftest_s=' .machine "pwr7"
3751 *) conftest_s=' .machine power7
3756 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3757 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3759 [AC_DEFINE(HAVE_AS_VSX, 1,
3760 [Define if your assembler supports VSX instructions.])])
3763 *-*-aix*) conftest_s=' .machine "pwr7"
3766 *) conftest_s=' .machine power7
3771 gcc_GAS_CHECK_FEATURE([popcntd support],
3772 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3774 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3775 [Define if your assembler supports POPCNTD instructions.])])
3778 *-*-aix*) conftest_s=' .csect .text[[PR]]
3780 *) conftest_s=' .text
3784 gcc_GAS_CHECK_FEATURE([lwsync support],
3785 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3787 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3788 [Define if your assembler supports LWSYNC instructions.])])
3791 *-*-aix*) conftest_s=' .machine "476"
3794 *) conftest_s=' .machine "476"
3799 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3800 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3802 [AC_DEFINE(HAVE_AS_DCI, 1,
3803 [Define if your assembler supports the DCI/ICI instructions.])])
3805 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3806 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3807 [.gnu_attribute 4,1],,
3808 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3809 [Define if your assembler supports .gnu_attribute.])])
3811 gcc_GAS_CHECK_FEATURE([tls marker support],
3812 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3813 [ bl __tls_get_addr(x@tlsgd)],,
3814 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3815 [Define if your assembler supports arg info for __tls_get_addr.])])
3819 gcc_GAS_CHECK_FEATURE([.ref support],
3820 gcc_cv_as_aix_ref, [2.21.0],,
3821 [ .csect stuff[[rw]]
3827 [AC_DEFINE(HAVE_AS_REF, 1,
3828 [Define if your assembler supports .ref])])
3834 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3835 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3836 [ lw $4,%gp_rel(foo)($4)],,
3837 [if test x$target_cpu_default = x
3838 then target_cpu_default=MASK_EXPLICIT_RELOCS
3839 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3841 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3842 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3843 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3844 [Define if the assembler understands -mno-shared.])])
3846 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3847 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3848 [.gnu_attribute 4,1],,
3849 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3850 [Define if your assembler supports .gnu_attribute.])])
3852 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3853 gcc_cv_as_mips_dtprelword, [2,18,0],,
3854 [.section .tdata,"awT",@progbits
3858 .dtprelword x+0x8000],,
3859 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3860 [Define if your assembler supports .dtprelword.])])
3862 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3863 gcc_cv_as_mips_dspr1_mult,,,
3873 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3874 [Define if your assembler supports DSPR1 mult.])])
3876 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3877 gcc_cv_as_ld_jalr_reloc=no
3878 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3879 if test $in_tree_ld = yes ; then
3880 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3881 && test $in_tree_ld_is_elf = yes; then
3882 gcc_cv_as_ld_jalr_reloc=yes
3884 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3885 echo ' .ent x' > conftest.s
3886 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3887 echo ' ld $25,%call16(y)($28)' >> conftest.s
3888 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3889 echo '1: jalr $25' >> conftest.s
3890 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3891 echo '1: jalr $25' >> conftest.s
3892 echo ' .end x' >> conftest.s
3893 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3894 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3895 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3896 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3897 gcc_cv_as_ld_jalr_reloc=yes
3903 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3904 if test x$target_cpu_default = x; then
3905 target_cpu_default=MASK_RELAX_PIC_CALLS
3907 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3910 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3912 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3913 [gcc_cv_ld_mips_personality_relaxation],
3914 [gcc_cv_ld_mips_personality_relaxation=no
3915 if test $in_tree_ld = yes ; then
3916 if test "$gcc_cv_gld_major_version" -eq 2 \
3917 -a "$gcc_cv_gld_minor_version" -ge 21 \
3918 -o "$gcc_cv_gld_major_version" -gt 2; then
3919 gcc_cv_ld_mips_personality_relaxation=yes
3921 elif test x$gcc_cv_as != x \
3922 -a x$gcc_cv_ld != x \
3923 -a x$gcc_cv_readelf != x ; then
3924 cat > conftest.s <<EOF
3926 .cfi_personality 0x80,indirect_ptr
3933 .section .data,"aw",@progbits
3937 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3938 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3939 if $gcc_cv_readelf -d conftest 2>&1 \
3940 | grep TEXTREL > /dev/null 2>&1; then
3942 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3943 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3946 gcc_cv_ld_mips_personality_relaxation=yes
3950 rm -f conftest.s conftest.o conftest])
3951 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3952 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3953 [Define if your linker can relax absolute .eh_frame personality
3954 pointers into PC-relative form.])
3959 # Mips and HP-UX need the GNU assembler.
3960 # Linux on IA64 might be able to use the Intel assembler.
3963 mips*-*-* | *-*-hpux* )
3964 if test x$gas_flag = xyes \
3965 || test x"$host" != x"$build" \
3966 || test ! -x "$gcc_cv_as" \
3967 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3970 echo "*** This configuration requires the GNU assembler" >&2
3976 # ??? Not all targets support dwarf2 debug_line, even within a version
3977 # of gas. Moreover, we need to emit a valid instruction to trigger any
3978 # info to the output file. So, as supported targets are added to gas 2.11,
3979 # add some instruction here to (also) show we expect this might work.
3980 # ??? Once 2.11 is released, probably need to add first known working
3981 # version to the per-target configury.
3983 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
3984 | pa | rs6000 | score | sparc | spu | xstormy16 | xtensa)
3994 if test x"$insn" != x; then
3996 .file 1 \"conftest.s\"
3999 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4000 gcc_cv_as_dwarf2_debug_line,
4001 [elf,2,11,0],, [$conftest_s],
4002 [if test x$gcc_cv_objdump != x \
4003 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4004 | grep debug_line > /dev/null 2>&1; then
4005 gcc_cv_as_dwarf2_debug_line=yes
4008 # The .debug_line file table must be in the exact order that
4009 # we specified the files, since these indices are also used
4010 # by DW_AT_decl_file. Approximate this test by testing if
4011 # the assembler bitches if the same index is assigned twice.
4012 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4013 gcc_cv_as_dwarf2_file_buggy,,,
4017 if test $gcc_cv_as_dwarf2_debug_line = yes \
4018 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4019 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4020 [Define if your assembler supports dwarf2 .file/.loc directives,
4021 and preserves file table indices exactly as given.])
4024 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4025 gcc_cv_as_gdwarf2_flag,
4026 [elf,2,11,0], [--gdwarf2], [$insn],,
4027 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4028 [Define if your assembler supports the --gdwarf2 option.])])
4030 gcc_GAS_CHECK_FEATURE([--gstabs option],
4031 gcc_cv_as_gstabs_flag,
4032 [elf,2,11,0], [--gstabs], [$insn],
4033 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4034 # and warns about it, but still exits successfully. So check for
4036 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4038 else gcc_cv_as_gstabs_flag=yes
4040 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4041 [Define if your assembler supports the --gstabs option.])])
4043 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4044 gcc_cv_as_debug_prefix_map_flag,
4045 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4046 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4047 [Define if your assembler supports the --debug-prefix-map option.])])
4050 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4053 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4054 [Define if your assembler supports .lcomm with an alignment field.])])
4056 AC_ARG_ENABLE(gnu-unique-object,
4057 [AS_HELP_STRING([--enable-gnu-unique-object],
4058 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4059 [case $enable_gnu_unique_object in
4061 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4062 Valid choices are 'yes' and 'no'.]) ;;
4064 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4066 [.type foo, @gnu_unique_object],,
4067 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4068 [[if test x$host = x$build -a x$host = x$target &&
4069 ldd --version 2>/dev/null &&
4070 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4071 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4072 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4073 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4074 if test "$glibcnum" -ge 2011 ; then
4075 enable_gnu_unique_object=yes
4078 if test x$enable_gnu_unique_object = xyes; then
4079 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4080 [Define if your assembler supports @gnu_unique_object.])
4083 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4084 [gcc_cv_as_line_zero],
4085 [gcc_cv_as_line_zero=no
4086 if test $in_tree_gas = yes; then
4087 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4088 elif test "x$gcc_cv_as" != x; then
4089 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4090 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4091 test "x`cat conftest.out`" = x
4093 gcc_cv_as_line_zero=yes
4095 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4096 cat conftest.s >&AS_MESSAGE_LOG_FD
4097 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4098 cat conftest.out >&AS_MESSAGE_LOG_FD
4100 rm -f conftest.o conftest.s conftest.out
4102 if test "x$gcc_cv_as_line_zero" = xyes; then
4103 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4104 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4107 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4108 gcc_cv_ld_eh_frame_hdr=no
4109 if test $in_tree_ld = yes ; then
4110 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4111 && test $in_tree_ld_is_elf = yes; then
4112 gcc_cv_ld_eh_frame_hdr=yes
4114 elif test x$gcc_cv_ld != x; then
4115 if echo "$ld_ver" | grep GNU > /dev/null; then
4116 # Check if linker supports --eh-frame-hdr option
4117 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4118 gcc_cv_ld_eh_frame_hdr=yes
4123 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4124 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4125 gcc_cv_ld_eh_frame_hdr=yes
4131 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4132 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4133 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4134 [Define if your linker supports .eh_frame_hdr.])
4136 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4138 AC_MSG_CHECKING(linker position independent executable support)
4140 if test $in_tree_ld = yes ; then
4141 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4142 && test $in_tree_ld_is_elf = yes; then
4145 elif test x$gcc_cv_ld != x; then
4146 # Check if linker supports -pie option
4147 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4151 if test x"$gcc_cv_ld_pie" = xyes; then
4152 AC_DEFINE(HAVE_LD_PIE, 1,
4153 [Define if your linker supports -pie option.])
4155 AC_MSG_RESULT($gcc_cv_ld_pie)
4157 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4158 gcc_cv_ld_eh_gc_sections=no
4159 if test $in_tree_ld = yes ; then
4160 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4161 && test $in_tree_ld_is_elf = yes; then
4162 gcc_cv_ld_eh_gc_sections=yes
4164 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4165 cat > conftest.s <<EOF
4168 .type _start, @function
4171 .size _start, .-_start
4172 .section .text.foo,"ax",@progbits
4173 .type foo, @function
4177 .section .gcc_except_table.foo,"a",@progbits
4180 .section .eh_frame,"a",@progbits
4183 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4184 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4185 | grep "gc-sections option ignored" > /dev/null; then
4186 gcc_cv_ld_eh_gc_sections=no
4187 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4188 | grep gcc_except_table > /dev/null; then
4189 gcc_cv_ld_eh_gc_sections=yes
4190 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4191 if test x$gcc_cv_as_comdat_group != xyes; then
4192 gcc_cv_ld_eh_gc_sections=no
4193 cat > conftest.s <<EOF
4196 .type _start, @function
4199 .size _start, .-_start
4200 .section .gnu.linkonce.t.foo,"ax",@progbits
4201 .type foo, @function
4205 .section .gcc_except_table.foo,"a",@progbits
4208 .section .eh_frame,"a",@progbits
4211 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4212 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4213 | grep "gc-sections option ignored" > /dev/null; then
4214 gcc_cv_ld_eh_gc_sections=no
4215 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4216 | grep gcc_except_table > /dev/null; then
4217 gcc_cv_ld_eh_gc_sections=yes
4223 rm -f conftest.s conftest.o conftest
4227 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4228 gcc_cv_ld_eh_gc_sections=no
4231 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4232 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4233 [Define if your linker supports garbage collection of
4234 sections in presence of EH frames.])
4236 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4238 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4239 gcc_cv_ld_eh_gc_sections_bug=no
4240 if test $in_tree_ld = yes ; then
4241 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4242 && test $in_tree_ld_is_elf = yes; then
4243 gcc_cv_ld_eh_gc_sections_bug=yes
4245 elif test x$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
4246 gcc_cv_ld_eh_gc_sections_bug=yes
4247 cat > conftest.s <<EOF
4250 .type _start, @function
4253 .size _start, .-_start
4254 .section .text.startup.foo,"ax",@progbits
4255 .type foo, @function
4259 .section .gcc_except_table.foo,"a",@progbits
4262 .section .eh_frame,"a",@progbits
4265 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4266 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4267 | grep "gc-sections option ignored" > /dev/null; then
4269 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4270 | grep gcc_except_table > /dev/null; then
4271 gcc_cv_ld_eh_gc_sections_bug=no
4274 rm -f conftest.s conftest.o conftest
4276 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4277 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4278 [Define if your linker has buggy garbage collection of
4279 sections support when .text.startup.foo like sections are used.])
4281 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4287 AC_CACHE_CHECK(linker --as-needed support,
4288 gcc_cv_ld_as_needed,
4289 [gcc_cv_ld_as_needed=no
4290 if test $in_tree_ld = yes ; then
4291 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4292 && test $in_tree_ld_is_elf = yes; then
4293 gcc_cv_ld_as_needed=yes
4295 elif test x$gcc_cv_ld != x; then
4296 # Check if linker supports --as-needed and --no-as-needed options
4297 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4298 gcc_cv_ld_as_needed=yes
4302 if test x"$gcc_cv_ld_as_needed" = xyes; then
4303 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4304 [Define if your linker supports --as-needed and --no-as-needed options.])
4307 case "$target:$tm_file" in
4308 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4309 AC_CACHE_CHECK(linker support for omitting dot symbols,
4310 gcc_cv_ld_no_dot_syms,
4311 [gcc_cv_ld_no_dot_syms=no
4312 if test $in_tree_ld = yes ; then
4313 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4314 gcc_cv_ld_no_dot_syms=yes
4316 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4317 cat > conftest1.s <<EOF
4321 cat > conftest2.s <<EOF
4322 .section ".opd","aw"
4327 .quad .LEfoo,.TOC.@tocbase,0
4333 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4334 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4335 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4336 gcc_cv_ld_no_dot_syms=yes
4338 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4341 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4342 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4343 [Define if your PowerPC64 linker only needs function descriptor syms.])
4346 AC_CACHE_CHECK(linker large toc support,
4347 gcc_cv_ld_large_toc,
4348 [gcc_cv_ld_large_toc=no
4349 if test $in_tree_ld = yes ; then
4350 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4351 gcc_cv_ld_large_toc=yes
4353 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4354 cat > conftest.s <<EOF
4355 .section ".tbss","awT",@nobits
4361 addis 9,13,ie0@got@tprel@ha
4362 ld 9,ie0@got@tprel@l(9)
4364 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4365 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4366 gcc_cv_ld_large_toc=yes
4368 rm -f conftest conftest.o conftest.s
4371 if test x"$gcc_cv_ld_large_toc" = xyes; then
4372 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4373 [Define if your PowerPC64 linker supports a large TOC.])
4378 AC_CACHE_CHECK(linker --build-id support,
4380 [gcc_cv_ld_buildid=no
4381 if test $in_tree_ld = yes ; then
4382 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4383 "$gcc_cv_gld_minor_version" -ge 18 -o \
4384 "$gcc_cv_gld_major_version" -gt 2 \
4385 && test $in_tree_ld_is_elf = yes; then
4386 gcc_cv_ld_buildid=yes
4388 elif test x$gcc_cv_ld != x; then
4389 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4390 gcc_cv_ld_buildid=yes
4393 if test x"$gcc_cv_ld_buildid" = xyes; then
4394 AC_DEFINE(HAVE_LD_BUILDID, 1,
4395 [Define if your linker supports --build-id.])
4398 AC_ARG_ENABLE(linker-build-id,
4399 [AS_HELP_STRING([--enable-linker-build-id],
4400 [compiler will always pass --build-id to linker])],
4402 enable_linker_build_id=no)
4404 if test x"$enable_linker_build_id" = xyes; then
4405 if test x"$gcc_cv_ld_buildid" = xyes; then
4406 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4407 [Define if gcc should always pass --build-id to linker.])
4409 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4413 # In binutils 2.21, GNU ld gained support for new emulations fully
4414 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4415 AC_CACHE_CHECK(linker *_sol2 emulation support,
4416 gcc_cv_ld_sol2_emulation,
4417 [gcc_cv_ld_sol2_emulation=no
4418 if test $in_tree_ld = yes ; then
4419 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4420 "$gcc_cv_gld_minor_version" -ge 21 -o \
4421 "$gcc_cv_gld_major_version" -gt 2 \
4422 && test $in_tree_ld_is_elf = yes; then
4423 gcc_cv_ld_sol2_emulation=yes
4425 elif test x$gcc_cv_ld != x; then
4426 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4427 grep _sol2 > /dev/null; then
4428 gcc_cv_ld_sol2_emulation=yes
4431 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4432 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4433 [Define if your linker supports the *_sol2 emulations.])
4436 AC_CACHE_CHECK(linker --sysroot support,
4438 [gcc_cv_ld_sysroot=no
4439 if test $in_tree_ld = yes ; then
4440 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4441 gcc_cv_ld_sysroot=yes
4443 elif test x$gcc_cv_ld != x; then
4444 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4445 gcc_cv_ld_sysroot=yes
4448 if test x"$gcc_cv_ld_sysroot" = xyes; then
4449 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4450 [Define if your linker supports --sysroot.])
4453 if test x$with_sysroot = x && test x$host = x$target \
4454 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4455 && test "$prefix" != "NONE"; then
4456 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4457 [Define to PREFIX/include if cpp should also search that directory.])
4460 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4461 if test "x$with_headers" != x; then
4462 target_header_dir=$with_headers
4463 elif test "x$with_sysroot" = x; then
4464 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4465 elif test "x$with_build_sysroot" != "x"; then
4466 target_header_dir="${with_build_sysroot}/usr/include"
4467 elif test "x$with_sysroot" = xyes; then
4468 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4470 target_header_dir="${with_sysroot}/usr/include"
4473 target_header_dir=/usr/include
4476 # Test for stack protector support in target C library.
4477 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4478 gcc_cv_libc_provides_ssp,
4479 [gcc_cv_libc_provides_ssp=no
4481 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4482 [# glibc 2.4 and later provides __stack_chk_fail and
4483 # either __stack_chk_guard, or TLS access to stack guard canary.
4484 if test -f $target_header_dir/features.h \
4485 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4486 $target_header_dir/features.h > /dev/null; then
4487 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4488 $target_header_dir/features.h > /dev/null; then
4489 gcc_cv_libc_provides_ssp=yes
4490 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4491 $target_header_dir/features.h > /dev/null \
4492 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4493 $target_header_dir/features.h > /dev/null; then
4494 gcc_cv_libc_provides_ssp=yes
4495 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4496 $target_header_dir/features.h > /dev/null && \
4497 test -f $target_header_dir/bits/uClibc_config.h && \
4498 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4499 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4500 gcc_cv_libc_provides_ssp=yes
4505 # Avoid complicated tests (see
4506 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4507 # simply assert that glibc does provide this, which is true for all
4508 # realistically usable GNU/Hurd configurations.
4509 gcc_cv_libc_provides_ssp=yes;;
4510 *-*-darwin* | *-*-freebsd*)
4511 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4512 [echo "no __stack_chk_fail on this target"])
4514 *) gcc_cv_libc_provides_ssp=no ;;
4517 if test x$gcc_cv_libc_provides_ssp = xyes; then
4518 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4519 [Define if your target C library provides stack protector support])
4522 # Test for <sys/sdt.h> on the target.
4523 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4524 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4526 if test -f $target_header_dir/sys/sdt.h; then
4527 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4528 [Define if your target C library provides sys/sdt.h])
4530 AC_MSG_RESULT($have_sys_sdt_h)
4532 # Check if TFmode long double should be used by default or not.
4533 # Some glibc targets used DFmode long double, but with glibc 2.4
4534 # and later they can use TFmode.
4536 powerpc*-*-linux* | \
4540 AC_ARG_WITH(long-double-128,
4541 [AS_HELP_STRING([--with-long-double-128],
4542 [use 128-bit long double by default])],
4543 gcc_cv_target_ldbl128="$with_long_double_128",
4544 [[gcc_cv_target_ldbl128=no
4545 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4546 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4547 && gcc_cv_target_ldbl128=yes
4551 if test x$gcc_cv_target_ldbl128 = xyes; then
4552 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4553 [Define if TFmode long double should be the default])
4556 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4557 gcc_cv_target_dl_iterate_phdr=unknown
4560 # <link.h> needs both a dl_iterate_phdr declaration and support for
4561 # compilation with largefile support.
4562 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4563 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4564 gcc_cv_target_dl_iterate_phdr=yes
4566 gcc_cv_target_dl_iterate_phdr=no
4570 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4571 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4572 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4573 [Define if your target C library provides the `dl_iterate_phdr' function.])
4575 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4577 # Find out what GC implementation we want, or may, use.
4579 [AS_HELP_STRING([--with-gc={page,zone}],
4580 [choose the garbage collection mechanism to use
4581 with the compiler])],
4588 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4591 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4596 echo "Using $GGC for garbage collection."
4598 # Libraries to use on the host. This will normally be set by the top
4599 # level Makefile. Here we simply capture the value for our Makefile.
4600 if test -z "${HOST_LIBS+set}"; then
4605 # Use the system's zlib library.
4607 zlibinc="-I\$(srcdir)/../zlib"
4608 AC_ARG_WITH(system-zlib,
4609 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4616 dnl Very limited version of automake's enable-maintainer-mode
4618 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4619 dnl maintainer-mode is disabled by default
4620 AC_ARG_ENABLE(maintainer-mode,
4621 [AS_HELP_STRING([--enable-maintainer-mode],
4622 [enable make rules and dependencies not useful
4623 (and sometimes confusing) to the casual installer])],
4624 maintainer_mode=$enableval,
4627 AC_MSG_RESULT($maintainer_mode)
4629 if test "$maintainer_mode" = "yes"; then
4640 # Make empty files to contain the specs and options for each language.
4641 # Then add #include lines to for a compiler that has specs and/or options.
4647 # These (without "all_") are set in each config-lang.in.
4648 # `language' must be a single word so is spelled singularly.
4651 all_outputs='Makefile'
4652 # List of language makefile fragments.
4654 # Additional files for gengtype
4655 all_gtfiles="$target_gtfiles"
4657 # These are the languages that are set in --enable-languages,
4658 # and are available in the GCC tree.
4659 all_selected_languages=
4661 # Add the language fragments.
4662 # Languages are added via two mechanisms. Some information must be
4663 # recorded in makefile variables, these are defined in config-lang.in.
4664 # We accumulate them and plug them into the main Makefile.
4665 # The other mechanism is a set of hooks for each of the main targets
4666 # like `clean', `install', etc.
4668 language_hooks="Make-hooks"
4670 for lang in ${srcdir}/*/config-lang.in
4673 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4675 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4676 if test "x$lang_alias" = x
4678 echo "$lang doesn't set \$language." 1>&2
4681 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4682 subdirs="$subdirs $subdir"
4684 # $gcc_subdir is where the gcc integration files are to be found
4685 # for a language, both for internal compiler purposes (compiler
4686 # sources implementing front-end to GCC tree converters), and for
4687 # build infrastructure purposes (Make-lang.in, etc.)
4689 # This will be <subdir> (relative to $srcdir) if a line like
4690 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4691 # is found in <langdir>/config-lang.in, and will remain <langdir>
4694 # Except for the language alias (fetched above), the regular
4695 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4696 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4697 # only this and the language alias.
4699 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4700 if [ "$gcc_subdir" = "" ]; then
4701 gcc_subdir="$subdir"
4704 case ",$enable_languages," in
4706 all_selected_languages="$all_selected_languages $lang_alias"
4707 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4708 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4720 . ${srcdir}/$gcc_subdir/config-lang.in
4721 if test "x$language" = x
4723 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4728 case ",$enable_languages," in
4731 for i in $subdir_requires; do
4732 test -f "${srcdir}/$i/config-lang.in" && continue
4740 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4741 if test -f $srcdir/$gcc_subdir/lang.opt; then
4742 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4743 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4745 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4746 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4748 all_languages="$all_languages $language"
4749 all_compilers="$all_compilers $compilers"
4750 all_outputs="$all_outputs $outputs"
4751 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4752 case ",$enable_languages," in
4754 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4756 AC_SUBST(enable_lto)
4762 # Pick up gtfiles for c
4764 . ${srcdir}/c-config-lang.in
4765 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4768 for language in $all_selected_languages
4770 check_languages="$check_languages check-$language"
4773 # We link each language in with a set of hooks, reached indirectly via
4774 # lang.${target}. Only do so for selected languages.
4778 target_list="all.cross start.encap rest.encap tags \
4779 install-common install-man install-info install-pdf install-html dvi \
4780 pdf html uninstall info man srcextra srcman srcinfo \
4781 mostlyclean clean distclean maintainer-clean install-plugin"
4783 for t in $target_list
4786 for lang in $all_selected_languages
4790 echo "lang.$t: $x" >> Make-hooks
4794 # Option include files
4797 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4798 option_includes="option-includes.mk"
4799 AC_SUBST_FILE(option_includes)
4807 echo "dir ." > .gdbinit
4808 echo "dir ${srcdir}" >> .gdbinit
4809 if test x$gdb_needs_out_file_path = xyes
4811 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4813 if test "x$subdirs" != x; then
4816 echo "dir ${srcdir}/$s" >> .gdbinit
4819 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4821 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4822 AC_SUBST(gcc_tooldir)
4825 # Find a directory in which to install a shared libgcc.
4827 AC_ARG_ENABLE(version-specific-runtime-libs,
4828 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
4829 [specify that runtime libraries should be
4830 installed in a compiler-specific directory])])
4832 AC_ARG_WITH(slibdir,
4833 [AS_HELP_STRING([--with-slibdir=DIR], [shared libraries in DIR @<:@LIBDIR@:>@])],
4834 slibdir="$with_slibdir",
4835 if test "${enable_version_specific_runtime_libs+set}" = set; then
4836 slibdir='$(libsubdir)'
4837 elif test "$host" != "$target"; then
4838 slibdir='$(build_tooldir)/lib'
4844 # Substitute configuration variables
4847 AC_SUBST(all_compilers)
4848 AC_SUBST(all_gtfiles)
4849 AC_SUBST(all_lang_makefrags)
4850 AC_SUBST(all_languages)
4851 AC_SUBST(all_selected_languages)
4852 AC_SUBST(build_exeext)
4853 AC_SUBST(build_install_headers_dir)
4854 AC_SUBST(build_xm_file_list)
4855 AC_SUBST(build_xm_include_list)
4856 AC_SUBST(build_xm_defines)
4857 AC_SUBST(build_file_translate)
4858 AC_SUBST(check_languages)
4859 AC_SUBST(cpp_install_dir)
4860 AC_SUBST(xmake_file)
4861 AC_SUBST(tmake_file)
4862 AC_SUBST(TM_ENDIAN_CONFIG)
4863 AC_SUBST(TM_MULTILIB_CONFIG)
4864 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4865 AC_SUBST(extra_gcc_objs)
4866 AC_SUBST(user_headers_inc_next_pre)
4867 AC_SUBST(user_headers_inc_next_post)
4868 AC_SUBST(extra_headers_list)
4869 AC_SUBST(extra_objs)
4870 AC_SUBST(extra_parts)
4871 AC_SUBST(extra_passes)
4872 AC_SUBST(extra_programs)
4873 AC_SUBST(float_h_file)
4874 AC_SUBST(gcc_config_arguments)
4875 AC_SUBST(gcc_gxx_include_dir)
4876 AC_SUBST(host_exeext)
4877 AC_SUBST(host_xm_file_list)
4878 AC_SUBST(host_xm_include_list)
4879 AC_SUBST(host_xm_defines)
4880 AC_SUBST(out_host_hook_obj)
4882 AC_SUBST(lang_opt_files)
4883 AC_SUBST(lang_specs_files)
4884 AC_SUBST(lang_tree_files)
4885 AC_SUBST(local_prefix)
4887 AC_SUBST(objc_boehm_gc)
4889 AC_SUBST(out_object_file)
4890 AC_SUBST(common_out_file)
4891 AC_SUBST(common_out_object_file)
4892 AC_SUBST(thread_file)
4893 AC_SUBST(tm_file_list)
4894 AC_SUBST(tm_include_list)
4895 AC_SUBST(tm_defines)
4896 AC_SUBST(libgcc_tm_file_list)
4897 AC_SUBST(libgcc_tm_include_list)
4898 AC_SUBST(tm_p_file_list)
4899 AC_SUBST(tm_p_include_list)
4900 AC_SUBST(xm_file_list)
4901 AC_SUBST(xm_include_list)
4902 AC_SUBST(xm_defines)
4903 AC_SUBST(use_gcc_stdint)
4904 AC_SUBST(c_target_objs)
4905 AC_SUBST(cxx_target_objs)
4906 AC_SUBST(fortran_target_objs)
4907 AC_SUBST(target_cpu_default)
4909 AC_SUBST_FILE(language_hooks)
4912 if test x${build} = x${host} ; then
4913 if test x${host} = x${target} ; then
4914 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4916 echo "Links are now set up to build a cross-compiler" 1>&2
4917 echo " from ${host} to ${target}." 1>&2
4920 if test x${host} = x${target} ; then
4921 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4922 echo " for ${target}." 1>&2
4924 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4925 echo " from ${host} to ${target}." 1>&2
4929 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4930 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4932 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4933 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4935 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4936 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4937 if test "x${CLOOGLIBS}" != "x" ; then
4938 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4941 # Check for plugin support
4942 AC_ARG_ENABLE(plugin,
4943 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
4944 enable_plugin=$enableval,
4945 enable_plugin=yes; default_plugin=yes)
4951 if test x$build = x$host; then
4952 export_sym_check="nm${exeext} -g"
4953 elif test x$host = x$target; then
4954 export_sym_check="$gcc_cv_nm -g"
4960 if test x$build = x$host; then
4961 export_sym_check="objdump${exeext} -T"
4962 elif test x$host = x$target; then
4963 export_sym_check="$gcc_cv_objdump -T"
4970 if test x"$enable_plugin" = x"yes"; then
4972 AC_MSG_CHECKING([for exported symbols])
4973 if test "x$export_sym_check" != x; then
4974 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4975 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4976 if $export_sym_check conftest | grep foobar > /dev/null; then
4977 : # No need to use a flag
4978 AC_MSG_RESULT([yes])
4980 AC_MSG_RESULT([yes])
4981 AC_MSG_CHECKING([for -rdynamic])
4982 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
4983 if $export_sym_check conftest | grep foobar > /dev/null; then
4985 pluginlibs="-rdynamic"
4990 AC_MSG_RESULT([$plugin_rdynamic])
4993 AC_MSG_RESULT([unable to check])
4998 AC_SEARCH_LIBS([dlopen], [dl])
4999 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5000 pluginlibs="$pluginlibs -ldl"
5004 # Check that we can build shared objects with -fPIC -shared
5005 saved_LDFLAGS="$LDFLAGS"
5006 saved_CFLAGS="$CFLAGS"
5009 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5010 CFLAGS="$CFLAGS -fPIC"
5011 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5014 CFLAGS="$CFLAGS -fPIC"
5015 LDFLAGS="$LDFLAGS -fPIC -shared"
5018 AC_MSG_CHECKING([for -fPIC -shared])
5020 [extern int X;],[return X == 0;],
5021 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5022 [AC_MSG_RESULT([no]); have_pic_shared=no])
5023 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5027 LDFLAGS="$saved_LDFLAGS"
5028 CFLAGS="$saved_CFLAGS"
5030 # If plugin support had been requested but not available, fail.
5031 if test x"$enable_plugin" = x"no" ; then
5032 if test x"$default_plugin" != x"yes"; then
5034 Building GCC with plugin support requires a host that supports
5035 -fPIC, -shared, -ldl and -rdynamic.])
5040 AC_SUBST(pluginlibs)
5041 AC_SUBST(enable_plugin)
5042 if test x"$enable_plugin" = x"yes"; then
5043 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5047 AC_ARG_ENABLE(libquadmath-support,
5048 [AS_HELP_STRING([--disable-libquadmath-support],
5049 [disable libquadmath support for Fortran])],
5050 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5051 ENABLE_LIBQUADMATH_SUPPORT=yes)
5052 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5053 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5054 [Define to 1 to enable libquadmath support])
5058 # Specify what hash style to use by default.
5059 AC_ARG_WITH([linker-hash-style],
5060 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5061 [specify the linker hash style])],
5062 [case x"$withval" in
5064 LINKER_HASH_STYLE=sysv
5067 LINKER_HASH_STYLE=gnu
5070 LINKER_HASH_STYLE=both
5073 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5076 [LINKER_HASH_STYLE=''])
5077 if test x"${LINKER_HASH_STYLE}" != x; then
5078 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5079 [The linker hash style])
5082 # Configure the subdirectories
5083 # AC_CONFIG_SUBDIRS($subdirs)
5085 # Create the Makefile
5086 # and configure language subdirectories
5087 AC_CONFIG_FILES($all_outputs)
5089 AC_CONFIG_COMMANDS([default],
5091 case ${CONFIG_HEADERS} in
5092 *auto-host.h:config.in*)
5095 # Make sure all the subdirs exist.
5096 for d in $subdirs doc build common c-family
5098 test -d $d || mkdir $d
5101 [subdirs='$subdirs'])