2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
5 # 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
7 #This file is part of GCC.
9 #GCC is free software; you can redistribute it and/or modify it under
10 #the terms of the GNU General Public License as published by the Free
11 #Software Foundation; either version 3, or (at your option) any later
14 #GCC is distributed in the hope that it will be useful, but WITHOUT
15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 #You should have received a copy of the GNU General Public License
20 #along with GCC; see the file COPYING3. If not see
21 #<http://www.gnu.org/licenses/>.
23 # --------------------------------
24 # Initialization and sanity checks
25 # --------------------------------
29 AC_CONFIG_SRCDIR(tree.c)
30 AC_CONFIG_HEADER(auto-host.h:config.in)
32 gcc_version=`cat $srcdir/BASE-VER`
34 # Determine the host, build, and target systems
39 # Determine the noncanonical target name, for directory use.
40 ACX_NONCANONICAL_TARGET
42 # Determine the target- and build-specific subdirectories
45 # Set program_transform_name
48 # Check for bogus environment variables.
49 # Test if LIBRARY_PATH contains the notation for the current directory
50 # since this would lead to problems installing/building glibc.
51 # LIBRARY_PATH contains the current directory if one of the following
53 # - one of the terminals (":" and ";") is the first or last sign
54 # - two terminals occur directly after each other
55 # - the path contains an element with a dot in it
56 AC_MSG_CHECKING(LIBRARY_PATH variable)
58 case ${LIBRARY_PATH} in
59 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
60 library_path_setting="contains current directory"
63 library_path_setting="ok"
67 AC_MSG_RESULT($library_path_setting)
68 if test "$library_path_setting" != "ok"; then
70 *** LIBRARY_PATH shouldn't contain the current directory when
71 *** building gcc. Please change the environment variable
72 *** and run configure again.])
75 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
76 # since this would lead to problems installing/building glibc.
77 # GCC_EXEC_PREFIX contains the current directory if one of the following
79 # - one of the terminals (":" and ";") is the first or last sign
80 # - two terminals occur directly after each other
81 # - the path contains an element with a dot in it
82 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
84 case ${GCC_EXEC_PREFIX} in
85 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
86 gcc_exec_prefix_setting="contains current directory"
89 gcc_exec_prefix_setting="ok"
93 AC_MSG_RESULT($gcc_exec_prefix_setting)
94 if test "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [AS_HELP_STRING([--with-local-prefix=DIR],
109 [specifies directory to put local include])],
110 [case "${withval}" in
111 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
113 *) local_prefix=$with_local_prefix ;;
116 # Default local prefix if it is empty
117 if test x$local_prefix = x; then
118 local_prefix=/usr/local
121 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
122 # passed in by the toplevel make and thus we'd get different behavior
123 # depending on where we built the sources.
125 # Specify the g++ header file directory
126 AC_ARG_WITH(gxx-include-dir,
127 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
128 [specifies directory to put g++ header files])],
129 [case "${withval}" in
130 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
132 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
135 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
136 if test x${gcc_gxx_include_dir} = x; then
137 if test x${enable_version_specific_runtime_libs} = xyes; then
138 gcc_gxx_include_dir='${libsubdir}/include/c++'
140 libstdcxx_incdir='include/c++/$(version)'
141 if test x$host != x$target; then
142 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
144 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
148 AC_ARG_WITH(cpp_install_dir,
149 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
150 [install the user visible C preprocessor in DIR
151 (relative to PREFIX) as well as PREFIX/bin])],
152 [if test x$withval = xyes; then
153 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
154 elif test x$withval != xno; then
155 cpp_install_dir=$withval
158 # We would like to our source tree to be readonly. However when releases or
159 # pre-releases are generated, the flex/bison generated files as well as the
160 # various formats of manuals need to be included along with the rest of the
161 # sources. Therefore we have --enable-generated-files-in-srcdir to do
164 AC_MSG_CHECKING([whether to place generated files in the source directory])
165 dnl generated-files-in-srcdir is disabled by default
166 AC_ARG_ENABLE(generated-files-in-srcdir,
167 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
168 [put copies of generated files in source dir
169 intended for creating source tarballs for users
170 without texinfo bison or flex])],
171 generated_files_in_srcdir=$enableval,
172 generated_files_in_srcdir=no)
174 AC_MSG_RESULT($generated_files_in_srcdir)
176 if test "$generated_files_in_srcdir" = "yes"; then
183 # -------------------
184 # Find default linker
185 # -------------------
189 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
190 gnu_ld_flag="$with_gnu_ld",
193 # With pre-defined ld
195 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
196 DEFAULT_LINKER="$with_ld")
197 if test x"${DEFAULT_LINKER+set}" = x"set"; then
198 if test ! -x "$DEFAULT_LINKER"; then
199 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
200 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
203 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
204 [Define to enable the use of a default linker.])
207 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
208 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
210 AC_MSG_CHECKING([whether a default linker was specified])
211 if test x"${DEFAULT_LINKER+set}" = x"set"; then
212 if test x"$gnu_ld_flag" = x"no"; then
213 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
215 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
221 # With demangler in GNU ld
222 AC_ARG_WITH(demangler-in-ld,
223 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
224 demangler_in_ld="$with_demangler_in_ld",
227 # ----------------------
228 # Find default assembler
229 # ----------------------
233 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
234 gas_flag="$with_gnu_as",
238 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
239 DEFAULT_ASSEMBLER="$with_as")
240 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
241 if test ! -x "$DEFAULT_ASSEMBLER"; then
242 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
243 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
246 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
247 [Define to enable the use of a default assembler.])
250 gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
251 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
253 AC_MSG_CHECKING([whether a default assembler was specified])
254 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
255 if test x"$gas_flag" = x"no"; then
256 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
258 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
268 # If a non-executable a.out is present (e.g. created by GNU as above even if
269 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
270 # file, even when creating an executable, so an execution test fails.
271 # Remove possible default executable files to avoid this.
273 # FIXME: This really belongs into AC_PROG_CC and can be removed once
274 # Autoconf includes it.
275 rm -f a.out a.exe b.out
277 # Find the native compiler
281 ACX_PROG_GNAT([-I"$srcdir"/ada])
283 # autoconf is lame and doesn't give us any substitution variable for this.
284 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
285 NO_MINUS_C_MINUS_O=yes
287 OUTPUT_OPTION='-o $@'
289 AC_SUBST(NO_MINUS_C_MINUS_O)
290 AC_SUBST(OUTPUT_OPTION)
292 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
293 # optimizations to be activated explicitly by the toplevel.
296 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
300 # -------------------------
301 # Check C compiler features
302 # -------------------------
304 AC_USE_SYSTEM_EXTENSIONS
310 # sizeof(char) is 1 by definition.
311 AC_CHECK_SIZEOF(void *)
312 AC_CHECK_SIZEOF(short)
314 AC_CHECK_SIZEOF(long)
315 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
316 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
319 # ---------------------
320 # Warnings and checking
321 # ---------------------
323 # Check $CC warning features (if it's GCC).
324 # We want to use -pedantic, but we don't want warnings about
328 # So, we only use -pedantic if we can disable those warnings.
330 ACX_PROG_CC_WARNING_OPTS(
331 m4_quote(m4_do([-W -Wall -Wwrite-strings -Wcast-qual])), [loose_warn])
332 ACX_PROG_CC_WARNING_OPTS(
333 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
335 ACX_PROG_CC_WARNING_OPTS(
336 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
337 ACX_PROG_CC_WARNING_OPTS(
338 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
339 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
340 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
341 [-Wno-overlength-strings])), [strict_warn])
342 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
344 # The above macros do nothing if the compiler is not GCC. However, the
345 # Makefile has more goo to add other flags, so these variables are used
346 # to enable warnings only for GCC.
349 if test "x$GCC" = "xyes"; then
350 warn_cflags='$(GCC_WARN_CFLAGS)'
351 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
353 AC_SUBST(warn_cflags)
354 AC_SUBST(warn_cxxflags)
356 # Enable expensive internal checks
358 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
362 AC_ARG_ENABLE(checking,
363 [AS_HELP_STRING([[--enable-checking[=LIST]]],
364 [enable expensive run-time checks. With LIST,
365 enable only specific categories of checks.
366 Categories are: yes,no,all,none,release.
367 Flags are: assert,df,fold,gc,gcac,gimple,misc,
368 rtlflag,rtl,runtime,tree,valgrind,types])],
369 [ac_checking_flags="${enableval}"],[
370 # Determine the default checks.
371 if test x$is_release = x ; then
372 ac_checking_flags=yes
374 ac_checking_flags=release
376 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
377 for check in release $ac_checking_flags
380 # these set all the flags to specific states
381 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
382 ac_fold_checking= ; ac_gc_checking=1 ;
383 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
384 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
385 ac_tree_checking=1 ; ac_valgrind_checking= ;
386 ac_types_checking=1 ;;
387 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
388 ac_fold_checking= ; ac_gc_checking= ;
389 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
390 ac_rtlflag_checking= ; ac_runtime_checking= ;
391 ac_tree_checking= ; ac_valgrind_checking= ;
392 ac_types_checking= ;;
393 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
394 ac_fold_checking=1 ; ac_gc_checking=1 ;
395 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
396 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
397 ac_tree_checking=1 ; ac_valgrind_checking= ;
398 ac_types_checking=1 ;;
399 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
400 ac_fold_checking= ; ac_gc_checking= ;
401 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
402 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
403 ac_tree_checking= ; ac_valgrind_checking= ;
404 ac_types_checking= ;;
405 # these enable particular checks
406 assert) ac_assert_checking=1 ;;
407 df) ac_df_checking=1 ;;
408 fold) ac_fold_checking=1 ;;
409 gc) ac_gc_checking=1 ;;
410 gcac) ac_gc_always_collect=1 ;;
411 gimple) ac_gimple_checking=1 ;;
412 misc) ac_checking=1 ;;
413 rtl) ac_rtl_checking=1 ;;
414 rtlflag) ac_rtlflag_checking=1 ;;
415 runtime) ac_runtime_checking=1 ;;
416 tree) ac_tree_checking=1 ;;
417 types) ac_types_checking=1 ;;
418 valgrind) ac_valgrind_checking=1 ;;
419 *) AC_MSG_ERROR(unknown check category $check) ;;
425 if test x$ac_checking != x ; then
426 AC_DEFINE(ENABLE_CHECKING, 1,
427 [Define if you want more run-time sanity checks. This one gets a grab
428 bag of miscellaneous but relatively cheap checks.])
429 nocommon_flag=-fno-common
431 AC_SUBST(nocommon_flag)
432 if test x$ac_df_checking != x ; then
433 AC_DEFINE(ENABLE_DF_CHECKING, 1,
434 [Define if you want more run-time sanity checks for dataflow.])
436 if test x$ac_assert_checking != x ; then
437 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
438 [Define if you want assertions enabled. This is a cheap check.])
440 if test x$ac_gimple_checking != x ; then
441 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
442 [Define if you want operations on GIMPLE (the basic data structure of
443 the high-level optimizers) to be checked for dynamic type safety at
444 runtime. This is moderately expensive.])
446 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
447 if test x$ac_runtime_checking != x ; then
448 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
449 [Define if you want runtime assertions enabled. This is a cheap check.])
451 if test x$ac_tree_checking != x ; then
452 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
453 [Define if you want all operations on trees (the basic data
454 structure of the front ends) to be checked for dynamic type safety
455 at runtime. This is moderately expensive. The tree browser debugging
456 routines will also be enabled by this option.
458 TREEBROWSER=tree-browser.o
460 if test x$ac_types_checking != x ; then
461 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
462 [Define if you want all gimple types to be verified after gimplifiation.
466 AC_SUBST(TREEBROWSER)
467 if test x$ac_rtl_checking != x ; then
468 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
469 [Define if you want all operations on RTL (the basic data structure
470 of the optimizer and back end) to be checked for dynamic type safety
471 at runtime. This is quite expensive.])
473 if test x$ac_rtlflag_checking != x ; then
474 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
475 [Define if you want RTL flag accesses to be checked against the RTL
476 codes that are supported for each access macro. This is relatively
479 if test x$ac_gc_checking != x ; then
480 AC_DEFINE(ENABLE_GC_CHECKING, 1,
481 [Define if you want the garbage collector to do object poisoning and
482 other memory allocation checks. This is quite expensive.])
484 if test x$ac_gc_always_collect != x ; then
485 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
486 [Define if you want the garbage collector to operate in maximally
487 paranoid mode, validating the entire heap and collecting garbage at
488 every opportunity. This is extremely expensive.])
490 if test x$ac_fold_checking != x ; then
491 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
492 [Define if you want fold checked that it never destructs its argument.
493 This is quite expensive.])
495 valgrind_path_defines=
498 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
499 dnl # an if statement. This was the source of very frustrating bugs
500 dnl # in converting to autoconf 2.5x!
501 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
503 if test x$ac_valgrind_checking != x ; then
504 # It is certainly possible that there's valgrind but no valgrind.h.
505 # GCC relies on making annotations so we must have both.
506 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
507 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
508 [[#include <valgrind/memcheck.h>
509 #ifndef VALGRIND_DISCARD
510 #error VALGRIND_DISCARD not defined
512 [gcc_cv_header_valgrind_memcheck_h=yes],
513 [gcc_cv_header_valgrind_memcheck_h=no])
514 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
515 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
516 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
517 [[#include <memcheck.h>
518 #ifndef VALGRIND_DISCARD
519 #error VALGRIND_DISCARD not defined
521 [gcc_cv_header_memcheck_h=yes],
522 [gcc_cv_header_memcheck_h=no])
523 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
524 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
525 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
526 if test "x$valgrind_path" = "x" \
527 || (test $have_valgrind_h = no \
528 && test $gcc_cv_header_memcheck_h = no \
529 && test $gcc_cv_header_valgrind_memcheck_h = no); then
530 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
532 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
533 valgrind_command="$valgrind_path -q"
534 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
535 [Define if you want to run subprograms and generated programs
536 through valgrind (a memory checker). This is extremely expensive.])
537 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
538 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
539 [Define if valgrind's valgrind/memcheck.h header is installed.])
541 if test $gcc_cv_header_memcheck_h = yes; then
542 AC_DEFINE(HAVE_MEMCHECK_H, 1,
543 [Define if valgrind's memcheck.h header is installed.])
546 AC_SUBST(valgrind_path_defines)
547 AC_SUBST(valgrind_command)
549 # Enable code coverage collection
550 AC_ARG_ENABLE(coverage,
551 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
552 [enable compiler's code coverage collection.
553 Use to measure compiler performance and locate
554 unused parts of the compiler. With LEVEL, specify
555 optimization. Values are opt, noopt,
557 [case "${enableval}" in
559 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
562 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
565 # a.k.a. --disable-coverage
569 AC_MSG_ERROR(unknown coverage setting $enableval)
573 AC_SUBST(coverage_flags)
575 AC_ARG_ENABLE(gather-detailed-mem-stats,
576 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
577 [enable detailed memory allocation stats gathering])], [],
578 [enable_gather_detailed_mem_stats=no])
579 if test x$enable_gather_detailed_mem_stats = xyes ; then
580 AC_DEFINE(GATHER_STATISTICS, 1,
581 [Define to enable detailed memory allocation stats gathering.])
584 # -------------------------------
585 # Miscenalleous configure options
586 # -------------------------------
588 # See if we are building gcc with C++.
589 AC_ARG_ENABLE(build-with-cxx,
590 [AS_HELP_STRING([--enable-build-with-cxx],
591 [build with C++ compiler instead of C compiler])],
592 ENABLE_BUILD_WITH_CXX=$enableval,
593 ENABLE_BUILD_WITH_CXX=no)
594 AC_SUBST(ENABLE_BUILD_WITH_CXX)
595 if test "$ENABLE_BUILD_WITH_CXX" = "yes"; then
596 AC_DEFINE(ENABLE_BUILD_WITH_CXX, 1,
597 [Define if building with C++.])
602 [AS_HELP_STRING([--with-stabs],
603 [arrange to use stabs instead of host debug format])],
607 # Determine whether or not multilibs are enabled.
608 AC_ARG_ENABLE(multilib,
609 [AS_HELP_STRING([--enable-multilib],
610 [enable library support for multiple ABIs])],
611 [], [enable_multilib=yes])
612 AC_SUBST(enable_multilib)
614 # Enable __cxa_atexit for C++.
615 AC_ARG_ENABLE(__cxa_atexit,
616 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
619 # Enable C extension for decimal float if target supports it.
620 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
622 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
623 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
624 [Define to 1 to enable decimal float extension to C.])
626 # Use default_decimal_float for dependency.
627 enable_decimal_float=$default_decimal_float
629 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
630 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
631 [Define to 1 to specify that we are using the BID decimal floating
632 point format instead of DPD])
634 # Enable C extension for fixed-point arithmetic.
635 AC_ARG_ENABLE(fixed-point,
636 [AS_HELP_STRING([--enable-fixed-point],
637 [enable fixed-point arithmetic extension to C])],
642 enable_fixed_point=yes
648 AC_MSG_WARN([fixed-point is not supported on IRIX, ignored])
649 enable_fixed_point=no
652 enable_fixed_point=yes
657 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
658 enable_fixed_point=no
662 AC_SUBST(enable_fixed_point)
664 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
665 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
666 [Define to 1 to enable fixed-point arithmetic extension to C.])
669 # Pass with no value to take the default
670 # Pass with a value to specify a thread package
671 AC_ARG_ENABLE(threads,
672 [AS_HELP_STRING([[--enable-threads[=LIB]]],
673 [enable thread usage for target GCC,
674 using LIB thread package])],,
678 [AS_HELP_STRING([--enable-tls],
679 [enable or disable generation of tls code
680 overriding the assembler check for tls support])],
684 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
685 Valid choices are 'yes' and 'no'.]) ;;
689 AC_ARG_ENABLE(objc-gc,
690 [AS_HELP_STRING([--enable-objc-gc],
691 [enable the use of Boehm's garbage collector with
692 the GNU Objective-C runtime])],
693 if test x$enable_objc_gc = xno; then
701 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
702 dwarf2="$with_dwarf2",
705 AC_ARG_ENABLE(shared,
706 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
708 case $enable_shared in
712 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
713 for pkg in $enableval; do
714 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
721 ], [enable_shared=yes])
722 AC_SUBST(enable_shared)
724 AC_ARG_WITH(build-sysroot,
725 [AS_HELP_STRING([--with-build-sysroot=sysroot],
726 [use sysroot as the system root during the build])])
729 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
730 [search for usr/lib, usr/include, et al, within DIR])],
732 case ${with_sysroot} in
733 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
734 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
737 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
738 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
740 if test "x$prefix" = xNONE; then
741 test_prefix=/usr/local
745 if test "x$exec_prefix" = xNONE; then
746 test_exec_prefix=$test_prefix
748 test_exec_prefix=$exec_prefix
750 case ${TARGET_SYSTEM_ROOT} in
751 "${test_prefix}"|"${test_prefix}/"*|\
752 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
753 '${prefix}'|'${prefix}/'*|\
754 '${exec_prefix}'|'${exec_prefix}/'*)
755 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
756 TARGET_SYSTEM_ROOT_DEFINE="$t"
761 TARGET_SYSTEM_ROOT_DEFINE=
762 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
764 AC_SUBST(TARGET_SYSTEM_ROOT)
765 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
766 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
769 [AS_HELP_STRING([--with-specs=SPECS],
770 [add SPECS to driver command-line processing])],
771 [CONFIGURE_SPECS=$withval],
774 AC_SUBST(CONFIGURE_SPECS)
776 ACX_PKGVERSION([GCC])
777 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
779 # Sanity check enable_languages in case someone does not run the toplevel
780 # configure # script.
781 AC_ARG_ENABLE(languages,
782 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
783 [case ,${enable_languages}, in
785 # go safe -- we cannot be much sure without the toplevel
787 # analysis of which target libs are present and usable
791 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
796 enable_languages=c,${enable_languages}
799 [enable_languages=c])
801 AC_ARG_WITH(multilib-list,
802 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
804 with_multilib_list=default)
806 # -------------------------
807 # Checks for other programs
808 # -------------------------
812 # Find some useful tools
814 # We need awk to create options.c and options.h.
815 # Bail out if it's missing.
817 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
825 # By default, the Darwin ranlib will not treat common symbols as
826 # definitions when building the archive table of contents. Other
827 # ranlibs do that; pass an option to the Darwin ranlib that makes
828 # it behave similarly.
834 AC_SUBST(ranlib_flags)
838 # See if cmp has --ignore-initial.
839 gcc_AC_PROG_CMP_IGNORE_INITIAL
841 # See if we have the mktemp command.
842 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
844 # See if makeinfo has been installed and is modern enough
845 # that we can use it.
846 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
847 [GNU texinfo.* \([0-9][0-9.]*\)],
848 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
849 if test $gcc_cv_prog_makeinfo_modern = no; then
851 *** Makeinfo is missing or too old.
852 *** Info documentation will not be built.])
859 # Is pod2man recent enough to regenerate manpages?
860 AC_MSG_CHECKING([for recent Pod::Man])
861 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
863 GENERATED_MANPAGES=generated-manpages
868 AC_SUBST(GENERATED_MANPAGES)
870 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
873 dnl Don't use AC_PROG_LEX; we insist on flex.
874 dnl LEXLIB is not useful in gcc.
875 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
878 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
880 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
881 # check for build == host before using them.
884 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
885 && test -d ../binutils ; then
886 NM='${objdir}/../binutils/nm-new'
888 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
892 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
893 && test -d ../binutils ; then
894 AR='${objdir}/../binutils/ar'
896 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
900 # --------------------
901 # Checks for C headers
902 # --------------------
904 # Need to reject headers which give warnings, so that the -Werror bootstrap
905 # works later. *sigh* This needs to come before all header checks.
912 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
913 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
914 sys/resource.h sys/param.h sys/times.h sys/stat.h \
915 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
917 # Check for thread headers.
918 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
919 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
921 # These tests can't be done till we know if we have limits.h.
925 # ----------------------
926 # Checks for C++ headers
927 # ----------------------
929 dnl Autoconf will give an error in the configure script if there is no
930 dnl C++ preprocessor. Hack to prevent that.
931 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
933 m4_popdef([AC_MSG_ERROR])[]dnl
937 AC_CHECK_HEADERS(unordered_map)
938 AC_CHECK_HEADERS(tr1/unordered_map)
939 AC_CHECK_HEADERS(ext/hash_map)
948 # These libraries may be used by collect2.
949 # We may need a special search path to get them linked.
950 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
952 for libs in '' -lld -lmld \
953 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
954 '-L/usr/lib/cmplrs/cc3.11 -lmld'
957 AC_TRY_LINK_FUNC(ldopen,
958 [gcc_cv_collect2_libs="$libs"; break])
961 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
962 case $gcc_cv_collect2_libs in
964 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
966 AC_SUBST(COLLECT2_LIBS)
968 # When building Ada code on Alpha, we need exc_resume which is usually in
969 # -lexc. So test for it.
972 AC_SEARCH_LIBS(exc_resume, exc)
975 AC_SUBST(GNAT_LIBEXC)
977 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
980 AC_SEARCH_LIBS(kstat_open, kstat)
981 EXTRA_GCC_LIBS="$LIBS"
983 AC_SUBST(EXTRA_GCC_LIBS)
985 # Some systems put ldexp and frexp in libm instead of libc; assume
986 # they're both in the same place. jcf-dump needs them.
989 AC_SEARCH_LIBS(ldexp, m)
994 # Use <inttypes.h> only if it exists,
995 # doesn't clash with <sys/types.h>, and declares intmax_t.
996 AC_MSG_CHECKING(for inttypes.h)
997 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
998 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
999 [[#include <sys/types.h>
1000 #include <inttypes.h>]],
1001 [[intmax_t i = -1;]])],
1002 [gcc_cv_header_inttypes_h=yes],
1003 [gcc_cv_header_inttypes_h=no])])
1004 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1005 if test $gcc_cv_header_inttypes_h = yes; then
1006 AC_DEFINE(HAVE_INTTYPES_H, 1,
1007 [Define if you have a working <inttypes.h> header file.])
1010 dnl Disabled until we have a complete test for buggy enum bitfields.
1011 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1013 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1014 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1015 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1016 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1017 putchar_unlocked putc_unlocked)
1018 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1019 sysconf strsignal getrusage nl_langinfo \
1020 gettimeofday mbstowcs wcswidth mmap setlocale \
1023 if test x$ac_cv_func_mbstowcs = xyes; then
1024 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1025 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1031 [gcc_cv_func_mbstowcs_works=yes],
1032 [gcc_cv_func_mbstowcs_works=no],
1033 [gcc_cv_func_mbstowcs_works=yes])])
1034 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1035 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1036 [Define this macro if mbstowcs does not crash when its
1037 first argument is NULL.])
1041 AC_CHECK_TYPE(ssize_t, int)
1042 AC_CHECK_TYPE(caddr_t, char *)
1044 gcc_AC_FUNC_MMAP_BLACKLIST
1048 # Under VMS, vfork works very differently than on Unix. The standard test
1049 # won't work, and it isn't easily adaptable. It makes more sense to
1051 ac_cv_func_vfork_works=yes
1056 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1057 # iconv() prototype.
1058 AS_IF([test "$ENABLE_BUILD_WITH_CXX" = "yes"],
1059 [AC_LANG_PUSH([C++])
1061 AC_LANG_POP([C++])],
1064 # Until we have in-tree GNU iconv:
1066 AC_SUBST(LIBICONV_DEP)
1072 # We will need to find libiberty.h and ansidecl.h
1073 saved_CFLAGS="$CFLAGS"
1074 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1075 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1076 strsignal strstr strverscmp \
1077 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1078 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1079 #include "ansidecl.h"
1080 #include "system.h"])
1082 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1083 #include "ansidecl.h"
1085 #ifdef HAVE_SYS_RESOURCE_H
1086 #include <sys/resource.h>
1090 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1091 #include "ansidecl.h"
1093 #ifdef HAVE_SYS_RESOURCE_H
1094 #include <sys/resource.h>
1096 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1097 [Define to `long' if <sys/resource.h> doesn't define.])])
1099 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1100 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1101 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1102 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1103 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1104 #include "ansidecl.h"
1113 gcc_AC_CHECK_DECLS(times, , ,[
1114 #include "ansidecl.h"
1116 #ifdef HAVE_SYS_TIMES_H
1117 #include <sys/times.h>
1121 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1122 #include "ansidecl.h"
1127 # More time-related stuff.
1128 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1129 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1130 #include "ansidecl.h"
1132 #ifdef HAVE_SYS_TIMES_H
1133 #include <sys/times.h>
1135 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1136 if test $ac_cv_struct_tms = yes; then
1137 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1138 [Define if <sys/times.h> defines struct tms.])
1141 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1142 # revisit after autoconf 2.50.
1143 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1144 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1145 #include "ansidecl.h"
1147 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1148 if test $gcc_cv_type_clock_t = yes; then
1149 AC_DEFINE(HAVE_CLOCK_T, 1,
1150 [Define if <time.h> defines clock_t.])
1153 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1154 CFLAGS="$saved_CFLAGS"
1156 gcc_AC_INITFINI_ARRAY
1158 # mkdir takes a single argument on some systems.
1159 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1167 # With Setjmp/Longjmp based exception handling.
1168 AC_ARG_ENABLE(sjlj-exceptions,
1169 [AS_HELP_STRING([--enable-sjlj-exceptions],
1170 [arrange to use setjmp/longjmp exception handling])],
1173 if test $enableval != yes; then
1174 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1179 force_sjlj_exceptions=yes],
1182 force_sjlj_exceptions=yes
1186 force_sjlj_exceptions=no
1189 if test $force_sjlj_exceptions = yes; then
1190 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1191 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1192 [Define 0/1 to force the choice for exception handling model.])
1195 # --------------------------------------------------------
1196 # Build, host, and target specific configuration fragments
1197 # --------------------------------------------------------
1199 # Collect build-machine-specific information.
1200 . ${srcdir}/config.build
1202 # Collect host-machine-specific information.
1203 . ${srcdir}/config.host
1207 # Collect target-machine-specific information.
1208 . ${srcdir}/config.gcc
1210 extra_objs="${host_extra_objs} ${extra_objs}"
1211 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1213 # Default the target-machine variables that were not explicitly set.
1214 if test x"$tm_file" = x
1215 then tm_file=$cpu_type/$cpu_type.h; fi
1217 if test x"$extra_headers" = x
1218 then extra_headers=; fi
1220 if test x$md_file = x
1221 then md_file=$cpu_type/$cpu_type.md; fi
1223 if test x$out_file = x
1224 then out_file=$cpu_type/$cpu_type.c; fi
1226 if test x"$tmake_file" = x
1227 then tmake_file=$cpu_type/t-$cpu_type
1230 if test x"$dwarf2" = xyes
1231 then tm_file="$tm_file tm-dwarf2.h"
1234 # Say what files are being used for the output code and MD file.
1235 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1236 echo "Using \`$srcdir/config/$md_file' as machine description file."
1238 # If any of the xm_file variables contain nonexistent files, warn
1239 # about them and drop them.
1242 for x in $build_xm_file; do
1243 if test -f $srcdir/config/$x
1245 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1251 for x in $host_xm_file; do
1252 if test -f $srcdir/config/$x
1254 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1260 for x in $xm_file; do
1261 if test -f $srcdir/config/$x
1263 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1269 for f in $tm_file; do
1272 if test $count = ax; then
1273 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1275 echo "Using the following target machine macro files:"
1276 for f in $tm_file; do
1277 echo " $srcdir/config/$f"
1281 if test x$need_64bit_hwint = xyes; then
1282 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1283 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1286 if test x$use_long_long_for_widest_fast_int = xyes; then
1287 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1288 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1289 efficiently supported by the host hardware.])
1293 for f in $host_xm_file; do
1296 if test $count = a; then
1298 elif test $count = ax; then
1299 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1301 echo "Using the following host machine macro files:"
1302 for f in $host_xm_file; do
1303 echo " $srcdir/config/$f"
1306 echo "Using ${out_host_hook_obj} for host machine hooks."
1308 if test "$host_xm_file" != "$build_xm_file"; then
1310 for f in $build_xm_file; do
1313 if test $count = a; then
1315 elif test $count = ax; then
1316 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1318 echo "Using the following build machine macro files:"
1319 for f in $build_xm_file; do
1320 echo " $srcdir/config/$f"
1327 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1328 gcc_cv_mcontext_underscores,
1330 #include <sys/cdefs.h>
1331 #include <sys/signal.h>
1332 #include <ucontext.h>
1333 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1335 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1336 if test $gcc_cv_mcontext_underscores = yes; then
1337 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1338 [mcontext_t fields start with __])
1347 # Check if a valid thread package
1348 case ${enable_threads} in
1351 target_thread_file='single'
1355 target_thread_file='single'
1357 aix | dce | lynx | mipssde | posix | rtems | \
1358 single | tpf | vxworks | win32)
1359 target_thread_file=${enable_threads}
1362 echo "${enable_threads} is an unknown thread package" 1>&2
1367 if test x${thread_file} = x; then
1368 # No thread file set by target-specific clauses in config.gcc,
1369 # so use file chosen by default logic above
1370 thread_file=${target_thread_file}
1373 # Make gthr-default.h if we have a thread file.
1375 if test $thread_file != single; then
1376 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1377 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1378 rm -f gthr-default.h-t
1380 mv -f gthr-default.h-t gthr-default.h
1382 gthread_flags=-DHAVE_GTHR_DEFAULT
1384 AC_SUBST(gthread_flags)
1391 if test x$enable___cxa_atexit = xyes || \
1392 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1393 if test x$host = x$target; then
1395 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1396 # keyed to flag_use_cxa_atexit
1401 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1402 [echo "__cxa_atexit can't be enabled on this target"])
1406 # We can't check for __cxa_atexit when building a cross, so assume
1410 if test x$use_cxa_atexit = xyes; then
1411 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1412 [Define if you want to use __cxa_atexit, rather than atexit, to
1413 register C++ destructors for local statics and global objects.
1414 This is essential for fully standards-compliant handling of
1415 destructors, but requires __cxa_atexit in libc.])
1419 # Look for a file containing extra machine modes.
1420 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1421 extra_modes_file='$(srcdir)'/config/${extra_modes}
1422 AC_SUBST(extra_modes_file)
1423 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1424 [Define to the name of a file containing a list of extra machine modes
1425 for this architecture.])
1428 # Convert extra_options into a form suitable for Makefile use.
1431 for f in $extra_options; do
1432 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1433 all_opt_files="$all_opt_files $srcdir/config/$f"
1435 AC_SUBST(extra_opt_files)
1437 # auto-host.h is the file containing items generated by autoconf and is
1438 # the first file included by config.h.
1439 # If host=build, it is correct to have bconfig include auto-host.h
1440 # as well. If host!=build, we are in error and need to do more
1441 # work to find out the build config parameters.
1442 if test x$host = x$build
1444 build_auto=auto-host.h
1446 # We create a subdir, then run autoconf in the subdir.
1447 # To prevent recursion we set host and build for the new
1448 # invocation of configure to the build for this invocation
1455 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1456 *) realsrcdir=../${srcdir};;
1458 saved_CFLAGS="${CFLAGS}"
1459 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1460 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1461 ${realsrcdir}/configure \
1462 --enable-languages=${enable_languages-all} \
1463 --target=$target_alias --host=$build_alias --build=$build_alias
1464 CFLAGS="${saved_CFLAGS}"
1466 # We just finished tests for the build machine, so rename
1467 # the file auto-build.h in the gcc directory.
1468 mv auto-host.h ../auto-build.h
1471 build_auto=auto-build.h
1473 AC_SUBST(build_subdir)
1475 tm_file="${tm_file} defaults.h"
1476 tm_p_file="${tm_p_file} tm-preds.h"
1477 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1478 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1479 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1480 # put this back in temporarily.
1481 xm_file="auto-host.h ansidecl.h ${xm_file}"
1488 # Compile in configure arguments.
1489 if test -f configargs.h ; then
1490 # Being re-configured.
1491 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1492 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1494 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1497 # Double all backslashes and backslash all quotes to turn
1498 # gcc_config_arguments into a C string.
1499 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1500 $gcc_config_arguments
1502 gcc_config_arguments_str=`cat conftest.out`
1505 cat > configargs.h <<EOF
1506 /* Generated automatically. */
1507 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1508 static const char thread_model[] = "$thread_file";
1510 static const struct {
1511 const char *name, *value;
1512 } configure_default_options[] = $configure_default_options;
1517 gcc_BASEVER=`cat $srcdir/BASE-VER`
1518 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1519 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1520 if test -f $srcdir/REVISION ; then
1521 gcc_REVISION=`cat $srcdir/REVISION`
1525 cat > plugin-version.h <<EOF
1526 #include "configargs.h"
1528 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1529 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1530 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1531 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1533 static char basever[] = "$gcc_BASEVER";
1534 static char datestamp[] = "$gcc_DATESTAMP";
1535 static char devphase[] = "$gcc_DEVPHASE";
1536 static char revision[] = "$gcc_REVISION";
1538 /* FIXME plugins: We should make the version information more precise.
1539 One way to do is to add a checksum. */
1541 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1543 configuration_arguments};
1547 # Internationalization
1548 ZW_GNU_GETTEXT_SISTER_DIR
1550 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1551 # -liconv on the link line twice.
1552 case "$LIBINTL" in *$LIBICONV*)
1556 AC_ARG_ENABLE(secureplt,
1557 [AS_HELP_STRING([--enable-secureplt],
1558 [enable -msecure-plt by default for PowerPC])],
1561 AC_ARG_ENABLE(leading-mingw64-underscores,
1562 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1563 [enable leading underscores on 64 bit mingw targets]),
1565 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1566 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1567 [Define if we should use leading underscore on 64 bit mingw targets])])
1570 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1573 AC_ARG_ENABLE(frame-pointer,
1574 [AS_HELP_STRING([--enable-frame-pointer],
1575 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1578 linux* | darwin[[8912]]*)
1579 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1581 enable_frame_pointer=no
1584 enable_frame_pointer=yes
1589 # Windows32 Registry support for specifying GCC installation paths.
1590 AC_ARG_ENABLE(win32-registry,
1591 [AS_HELP_STRING([--disable-win32-registry],
1592 [disable lookup of installation paths in the
1593 Registry on Windows hosts])
1594 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1595 AS_HELP_STRING([--enable-win32-registry=KEY],
1596 [use KEY instead of GCC version as the last portion
1597 of the registry key])],,)
1600 win32 | pe | cygwin* | mingw32* | uwin*)
1601 if test "x$enable_win32_registry" != xno; then
1602 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1605 if test "x$enable_win32_registry" != xno; then
1606 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1607 [Define to 1 if installation paths should be looked up in the Windows
1608 Registry. Ignored on non-Windows hosts.])
1610 if test "x$enable_win32_registry" != xyes \
1611 && test "x$enable_win32_registry" != x; then
1612 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1613 [Define to be the last component of the Windows registry key under which
1614 to look for installation paths. The full key used will be
1615 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1616 The default is the GCC version number.])
1622 # Get an absolute path to the GCC top-level source directory
1623 holddir=`${PWDCMD-pwd}`
1625 topdir=`${PWDCMD-pwd}`
1628 # Conditionalize the makefile for this host machine.
1630 for f in ${host_xmake_file}
1632 if test -f ${srcdir}/config/$f
1634 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1638 # Conditionalize the makefile for this target machine.
1640 for f in ${tmake_file}
1642 if test -f ${srcdir}/config/$f
1644 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1647 tmake_file="${tmake_file_}"
1649 out_object_file=`basename $out_file .c`.o
1650 common_out_object_file=`basename $common_out_file .c`.o
1652 tm_file_list="options.h"
1653 tm_include_list="options.h insn-constants.h"
1654 for f in $tm_file; do
1657 f=`echo $f | sed 's/^..//'`
1658 tm_file_list="${tm_file_list} $f"
1659 tm_include_list="${tm_include_list} $f"
1662 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1663 tm_include_list="${tm_include_list} $f"
1666 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1667 tm_include_list="${tm_include_list} config/$f"
1672 libgcc_tm_file_list=
1673 libgcc_tm_include_list=
1674 for f in $libgcc_tm_file; do
1675 libgcc_tm_file_list="${libgcc_tm_file_list} \$(srcdir)/../libgcc/config/$f"
1676 libgcc_tm_include_list="${libgcc_tm_include_list} ../libgcc/config/$f"
1681 for f in $tm_p_file; do
1684 tm_p_file_list="${tm_p_file_list} $f"
1685 tm_p_include_list="${tm_p_include_list} $f"
1688 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1689 tm_p_include_list="${tm_p_include_list} config/$f"
1695 for f in $xm_file; do
1698 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1699 xm_include_list="${xm_include_list} $f"
1702 xm_file_list="${xm_file_list} $f"
1703 xm_include_list="${xm_include_list} $f"
1706 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1707 xm_include_list="${xm_include_list} config/$f"
1713 host_xm_include_list=
1714 for f in $host_xm_file; do
1717 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1718 host_xm_include_list="${host_xm_include_list} $f"
1721 host_xm_file_list="${host_xm_file_list} $f"
1722 host_xm_include_list="${host_xm_include_list} $f"
1725 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1726 host_xm_include_list="${host_xm_include_list} config/$f"
1732 for f in $build_xm_file; do
1735 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1736 build_xm_include_list="${build_xm_include_list} $f"
1738 auto-build.h | auto-host.h )
1739 build_xm_file_list="${build_xm_file_list} $f"
1740 build_xm_include_list="${build_xm_include_list} $f"
1743 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1744 build_xm_include_list="${build_xm_include_list} config/$f"
1749 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1750 # cross-compiler which does not use the native headers and libraries.
1751 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1752 CROSS= AC_SUBST(CROSS)
1753 ALL=all.internal AC_SUBST(ALL)
1754 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1756 if test "x$with_build_sysroot" != x; then
1757 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1759 # This value is used, even on a native system, because
1760 # CROSS_SYSTEM_HEADER_DIR is just
1761 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1762 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1765 if test x$host != x$target
1767 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1769 SYSTEM_HEADER_DIR=$build_system_header_dir
1770 case "$host","$target" in
1771 # Darwin crosses can use the host system's libraries and headers,
1772 # because of the fat library support. Of course, it must be the
1773 # same version of Darwin on both sides. Allow the user to
1774 # just say --target=foo-darwin without a version number to mean
1775 # "the version on this system".
1776 *-*-darwin*,*-*-darwin*)
1777 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1778 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1779 if test $hostos = $targetos -o $targetos = darwin ; then
1781 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1786 i?86-*-*,x86_64-*-* \
1787 | powerpc*-*-*,powerpc64*-*-*)
1788 CROSS="$CROSS -DNATIVE_CROSS" ;;
1793 if test "x$with_headers" = x; then
1800 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1801 SYSTEM_HEADER_DIR=$build_system_header_dir
1804 # If this is a cross-compiler that does not
1805 # have its own set of headers then define
1808 # If this is using newlib, without having the headers available now,
1809 # then define inhibit_libc in LIBGCC2_CFLAGS.
1810 # This prevents libgcc2 from containing any code which requires libc
1812 : ${inhibit_libc=false}
1813 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1814 test x$with_newlib = xyes ; } &&
1815 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1818 AC_SUBST(inhibit_libc)
1820 # When building gcc with a cross-compiler, we need to adjust things so
1821 # that the generator programs are still built with the native compiler.
1822 # Also, we cannot run fixincludes.
1824 # These are the normal (build=host) settings:
1825 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1826 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1827 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1828 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1830 # And these apply if build != host, or we are generating coverage data
1831 if test x$build != x$host || test "x$coverage_flags" != x
1833 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1834 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1837 # Expand extra_headers to include complete path.
1838 # This substitutes for lots of t-* files.
1840 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1841 for file in ${extra_headers} ; do
1842 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1845 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1846 if test x"$use_gcc_tgmath" = xyes
1847 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1850 # Define collect2 in Makefile.
1851 case $host_can_use_collect2 in
1853 *) collect2='collect2$(exeext)' ;;
1855 AC_SUBST([collect2])
1857 # Add a definition of USE_COLLECT2 if system wants one.
1858 case $use_collect2 in
1859 no) use_collect2= ;;
1862 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1863 xm_defines="${xm_defines} USE_COLLECT2"
1864 case $host_can_use_collect2 in
1866 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1872 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1873 [Define to the name of the LTO plugin DSO that must be
1874 passed to the linker's -plugin=LIB option.])
1876 # ---------------------------
1877 # Assembler & linker features
1878 # ---------------------------
1880 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1881 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1882 # However when ld-new is first executed from the build tree, libtool will
1883 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1884 # to the build tree. While doing this we need to use the previous-stage
1885 # linker, or we have an infinite loop. The presence of a shell script as
1886 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1887 # the gcc/collect-ld script. So we need to know how libtool works, or
1888 # exec-tool will fail.
1890 m4_defun([_LT_CONFIG_COMMANDS], [])
1893 AC_SUBST(enable_fast_install)
1895 # Identify the assembler which will work hand-in-glove with the newly
1896 # built GCC, so that we can examine its features. This is the assembler
1897 # which will be driven by the driver program.
1899 # If build != host, and we aren't building gas in-tree, we identify a
1900 # build->target assembler and hope that it will have the same features
1901 # as the host->target assembler we'll be using.
1902 gcc_cv_gas_major_version=
1903 gcc_cv_gas_minor_version=
1904 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1906 m4_pattern_allow([AS_FOR_TARGET])dnl
1907 AS_VAR_SET_IF(gcc_cv_as,, [
1908 if test -x "$DEFAULT_ASSEMBLER"; then
1909 gcc_cv_as="$DEFAULT_ASSEMBLER"
1910 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1911 && test -f ../gas/Makefile \
1912 && test x$build = x$host; then
1913 gcc_cv_as=../gas/as-new$build_exeext
1914 elif test -x as$build_exeext; then
1915 # Build using assembler in the current directory.
1916 gcc_cv_as=./as$build_exeext
1917 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1918 gcc_cv_as="$AS_FOR_TARGET"
1920 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1923 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1924 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1925 case "$ORIGINAL_AS_FOR_TARGET" in
1926 ./as | ./as$build_exeext) ;;
1927 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1930 AC_MSG_CHECKING(what assembler to use)
1931 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1932 # Single tree build which includes gas. We want to prefer it
1933 # over whatever linker top-level may have detected, since
1934 # we'll use what we're building after installation anyway.
1935 AC_MSG_RESULT(newly built gas)
1937 _gcc_COMPUTE_GAS_VERSION
1938 in_tree_gas_is_elf=no
1939 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1940 || (grep 'obj_format = multi' ../gas/Makefile \
1941 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1943 in_tree_gas_is_elf=yes
1946 AC_MSG_RESULT($gcc_cv_as)
1950 # Identify the linker which will work hand-in-glove with the newly
1951 # built GCC, so that we can examine its features. This is the linker
1952 # which will be driven by the driver program.
1954 # If build != host, and we aren't building gas in-tree, we identify a
1955 # build->target linker and hope that it will have the same features
1956 # as the host->target linker we'll be using.
1957 gcc_cv_gld_major_version=
1958 gcc_cv_gld_minor_version=
1959 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1960 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1962 AS_VAR_SET_IF(gcc_cv_ld,, [
1963 if test -x "$DEFAULT_LINKER"; then
1964 gcc_cv_ld="$DEFAULT_LINKER"
1965 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1966 && test -f ../ld/Makefile \
1967 && test x$build = x$host; then
1968 gcc_cv_ld=../ld/ld-new$build_exeext
1969 elif test -x collect-ld$build_exeext; then
1970 # Build using linker in the current directory.
1971 gcc_cv_ld=./collect-ld$build_exeext
1972 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
1973 gcc_cv_ld="$LD_FOR_TARGET"
1975 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1978 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1979 PLUGIN_LD=`basename $gcc_cv_ld`
1980 AC_ARG_WITH(plugin-ld,
1981 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
1982 [if test x"$withval" != x; then
1983 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1984 PLUGIN_LD="$withval"
1986 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1987 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1989 # Check to see if we are using gold instead of ld
1990 AC_MSG_CHECKING(whether we are using gold)
1992 if test x$gcc_cv_ld != x; then
1993 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
1994 | grep "GNU gold" > /dev/null; then
1998 AC_MSG_RESULT($ld_is_gold)
2000 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2001 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2002 case "$ORIGINAL_LD_FOR_TARGET" in
2003 ./collect-ld | ./collect-ld$build_exeext) ;;
2004 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2007 AC_MSG_CHECKING(what linker to use)
2008 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2009 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2010 # Single tree build which includes ld. We want to prefer it
2011 # over whatever linker top-level may have detected, since
2012 # we'll use what we're building after installation anyway.
2013 AC_MSG_RESULT(newly built ld)
2015 in_tree_ld_is_elf=no
2016 if (grep 'EMUL = .*elf' ../ld/Makefile \
2017 || grep 'EMUL = .*linux' ../ld/Makefile \
2018 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2019 in_tree_ld_is_elf=yes
2020 elif test "$ld_is_gold" = yes; then
2021 in_tree_ld_is_elf=yes
2023 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
2026 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
2027 if test x$gcc_cv_gld_version != x; then
2031 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2032 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2035 AC_MSG_RESULT($gcc_cv_ld)
2039 # Figure out what nm we will be using.
2040 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2041 AS_VAR_SET_IF(gcc_cv_nm,, [
2042 if test -f $gcc_cv_binutils_srcdir/configure.in \
2043 && test -f ../binutils/Makefile \
2044 && test x$build = x$host; then
2045 gcc_cv_nm=../binutils/nm-new$build_exeext
2046 elif test -x nm$build_exeext; then
2047 gcc_cv_nm=./nm$build_exeext
2048 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2049 gcc_cv_nm="$NM_FOR_TARGET"
2051 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2054 AC_MSG_CHECKING(what nm to use)
2055 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2056 # Single tree build which includes binutils.
2057 AC_MSG_RESULT(newly built nm)
2060 AC_MSG_RESULT($gcc_cv_nm)
2064 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2065 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2066 case "$ORIGINAL_NM_FOR_TARGET" in
2067 ./nm | ./nm$build_exeext) ;;
2068 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2072 # Figure out what objdump we will be using.
2073 AS_VAR_SET_IF(gcc_cv_objdump,, [
2074 if test -f $gcc_cv_binutils_srcdir/configure.in \
2075 && test -f ../binutils/Makefile \
2076 && test x$build = x$host; then
2077 # Single tree build which includes binutils.
2078 gcc_cv_objdump=../binutils/objdump$build_exeext
2079 elif test -x objdump$build_exeext; then
2080 gcc_cv_objdump=./objdump$build_exeext
2081 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2082 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2084 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2087 AC_MSG_CHECKING(what objdump to use)
2088 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2089 # Single tree build which includes binutils.
2090 AC_MSG_RESULT(newly built objdump)
2091 elif test x$gcc_cv_objdump = x; then
2092 AC_MSG_RESULT(not found)
2094 AC_MSG_RESULT($gcc_cv_objdump)
2097 # Figure out what readelf we will be using.
2098 AS_VAR_SET_IF(gcc_cv_readelf,, [
2099 if test -f $gcc_cv_binutils_srcdir/configure.in \
2100 && test -f ../binutils/Makefile \
2101 && test x$build = x$host; then
2102 # Single tree build which includes binutils.
2103 gcc_cv_readelf=../binutils/readelf$build_exeext
2104 elif test -x readelf$build_exeext; then
2105 gcc_cv_readelf=./readelf$build_exeext
2107 AC_PATH_PROG(gcc_cv_readelf, readelf)
2110 AC_MSG_CHECKING(what readelf to use)
2111 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2112 # Single tree build which includes binutils.
2113 AC_MSG_RESULT(newly built readelf)
2114 elif test x$gcc_cv_readelf = x; then
2115 AC_MSG_RESULT(not found)
2117 AC_MSG_RESULT($gcc_cv_readelf)
2120 # Figure out what assembler alignment features are present.
2121 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2125 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2126 [Define if your assembler supports .balign and .p2align.])])
2128 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2131 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2132 [Define if your assembler supports specifying the maximum number
2133 of bytes to skip when using the GAS .p2align command.])])
2135 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2138 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2139 [Define if your assembler supports .literal16.])])
2141 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2143 [conftest_label1: .word 0
2145 conftest_label2: .word 0
2147 [if test x$gcc_cv_nm != x; then
2148 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2149 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2150 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2152 else gcc_cv_as_subsection_m1=yes
2154 rm -f conftest.nm1 conftest.nm2
2156 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2157 [Define if your assembler supports .subsection and .subsection -1 starts
2158 emitting at the beginning of your section.])])
2160 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2163 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2165 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2167 [ .weakref foobar, barfnot],,
2168 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2170 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2173 .NSUBSPA $CODE$,COMDAT],,
2174 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2176 # .hidden needs to be supported in both the assembler and the linker,
2177 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2178 # This is irritatingly difficult to feature test for; we have to check the
2179 # date string after the version number. If we've got an in-tree
2180 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2182 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2183 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2187 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2188 # STV_HIDDEN, so disable .hidden support if so.
2190 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2191 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2192 cat > conftest.s <<EOF
2199 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2200 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2201 grep '\.hidden default' > /dev/null; then
2204 gcc_cv_as_hidden=yes
2207 # Assume bug is present if objdump is missing.
2212 gcc_cv_as_hidden=yes
2217 # Darwin as has some visibility support, though with a different syntax.
2218 gcc_cv_as_hidden=yes
2222 # gnu_indirect_function type is an extension proposed at
2223 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2224 # selection of function implementation
2225 AC_ARG_ENABLE(gnu-indirect-function,
2226 [AS_HELP_STRING([--enable-gnu-indirect-function],
2227 [enable the use of the @gnu_indirect_function to glibc systems])],
2228 [case $enable_gnu_indirect_function in
2230 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2231 Valid choices are 'yes' and 'no'.]) ;;
2233 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2234 if test x$enable_gnu_indirect_function = xyes; then
2235 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2236 [Define if your system supports gnu indirect functions.])
2240 if test $in_tree_ld != yes ; then
2241 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2242 if echo "$ld_ver" | grep GNU > /dev/null; then
2243 if test x"$ld_is_gold" = xyes; then
2244 # GNU gold --version looks like this:
2246 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2248 # We extract the binutils version which is more familiar and specific
2249 # than the gold version.
2250 ld_vers=`echo $ld_ver | sed -n \
2251 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2253 # GNU ld --version looks like this:
2255 # GNU ld (GNU Binutils) 2.21.51.20110225
2256 ld_vers=`echo $ld_ver | sed -n \
2257 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2259 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2260 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2261 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2262 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2267 # Solaris 2 ld -V output looks like this for a regular version:
2269 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2271 # but test versions add stuff at the end:
2273 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2275 ld_ver=`$gcc_cv_ld -V 2>&1`
2276 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2277 ld_vers=`echo $ld_ver | sed -n \
2278 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2279 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2280 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2288 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2289 [[if test $in_tree_ld = yes ; then
2291 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2292 && test $in_tree_ld_is_elf = yes; then
2293 gcc_cv_ld_hidden=yes
2296 gcc_cv_ld_hidden=yes
2297 if test x"$ld_is_gold" = xyes; then
2299 elif echo "$ld_ver" | grep GNU > /dev/null; then
2300 if test 0"$ld_date" -lt 20020404; then
2301 if test -n "$ld_date"; then
2302 # If there was date string, but was earlier than 2002-04-04, fail
2304 elif test -z "$ld_vers"; then
2305 # If there was no date string nor ld version number, something is wrong
2308 test -z "$ld_vers_patch" && ld_vers_patch=0
2309 if test "$ld_vers_major" -lt 2; then
2311 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2312 gcc_cv_ld_hidden="no"
2313 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2321 # Darwin ld has some visibility support.
2322 gcc_cv_ld_hidden=yes
2324 hppa64*-*-hpux* | ia64*-*-hpux*)
2325 gcc_cv_ld_hidden=yes
2328 # .hidden support was backported to Solaris 8, starting with ld
2330 if test "$ld_vers_minor" -ge 276; then
2331 gcc_cv_ld_hidden=yes
2336 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2337 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2338 # .symbolic was only added in Solaris 9 12/02.
2339 gcc_cv_ld_hidden=yes
2347 libgcc_visibility=no
2348 AC_SUBST(libgcc_visibility)
2349 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2350 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2351 libgcc_visibility=yes
2352 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2353 [Define if your assembler and linker support .hidden.])
2356 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2357 gcc_cv_ld_ro_rw_mix=unknown
2358 if test $in_tree_ld = yes ; then
2359 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2360 && test $in_tree_ld_is_elf = yes; then
2361 gcc_cv_ld_ro_rw_mix=read-write
2363 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2364 echo '.section myfoosect, "a"' > conftest1.s
2365 echo '.section myfoosect, "aw"' > conftest2.s
2366 echo '.byte 1' >> conftest2.s
2367 echo '.section myfoosect, "a"' > conftest3.s
2368 echo '.byte 0' >> conftest3.s
2369 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2370 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2371 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2372 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2373 conftest2.o conftest3.o > /dev/null 2>&1; then
2374 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2375 | sed -e '/myfoosect/!d' -e N`
2376 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2377 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2378 gcc_cv_ld_ro_rw_mix=read-only
2380 gcc_cv_ld_ro_rw_mix=read-write
2385 rm -f conftest.* conftest[123].*
2388 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2389 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2390 [Define if your linker links a mix of read-only
2391 and read-write sections into a read-write section.])
2393 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2395 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2396 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2404 [[# GAS versions before 2.11 do not support uleb128,
2405 # despite appearing to.
2406 # ??? There exists an elf-specific test that will crash
2407 # the assembler. Perhaps it's better to figure out whether
2408 # arbitrary sections are supported and try the test.
2409 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2410 if echo "$as_ver" | grep GNU > /dev/null; then
2411 as_vers=`echo $as_ver | sed -n \
2412 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2413 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2414 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2415 if test $as_major -eq 2 && test $as_minor -lt 11
2417 else gcc_cv_as_leb128=yes
2420 [AC_DEFINE(HAVE_AS_LEB128, 1,
2421 [Define if your assembler supports .sleb128 and .uleb128.])])
2423 # Check if we have assembler support for unwind directives.
2424 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2431 .cfi_escape 1, 2, 3, 4, 5
2435 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2436 # read-only and read-write sections, we need to make sure that the
2437 # assembler used emits read-write .eh_frame sections.
2438 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2439 if test "x$gcc_cv_objdump" != x; then
2440 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2441 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2442 gcc_cv_as_cfi_directive=no
2445 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2446 # On Solaris/x86, make sure that GCC and gas agree on using
2447 # read-only .eh_frame sections for 64-bit.
2448 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2449 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2450 sed -e /.eh_frame/!d -e N | \
2451 grep READONLY > /dev/null; then
2452 gcc_cv_as_cfi_directive=yes
2454 gcc_cv_as_cfi_directive=no
2458 gcc_cv_as_cfi_directive=yes
2463 # no objdump, err on the side of caution
2464 gcc_cv_as_cfi_directive=no
2467 gcc_cv_as_cfi_directive=yes
2471 gcc_cv_as_cfi_directive=yes
2474 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2475 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2479 .cfi_adjust_cfa_offset 64
2481 .cfi_adjust_cfa_offset 128
2484 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2485 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2486 gcc_cv_as_cfi_advance_working=yes
2490 # no objdump, err on the side of caution
2491 gcc_cv_as_cfi_advance_working=no
2493 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2494 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2495 [`if test $gcc_cv_as_cfi_directive = yes \
2496 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2497 [Define 0/1 if your assembler supports CFI directives.])
2499 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2500 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2501 gcc_cv_as_cfi_personality_directive, ,,
2504 .cfi_personality 0, symbol
2506 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2507 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2508 then echo 1; else echo 0; fi`],
2509 [Define 0/1 if your assembler supports .cfi_personality.])
2511 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2512 gcc_cv_as_cfi_sections_directive, ,,
2514 .cfi_sections .debug_frame, .eh_frame
2518 win32 | pe | cygwin* | mingw32* | uwin*)
2519 # Need to check that we generated the correct relocation for the
2520 # .debug_frame section. This was fixed for binutils 2.21.
2521 gcc_cv_as_cfi_sections_directive=no
2522 if test "x$gcc_cv_objdump" != x; then
2523 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2524 grep secrel > /dev/null; then
2525 gcc_cv_as_cfi_sections_directive=yes
2530 gcc_cv_as_cfi_sections_directive=yes
2533 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2534 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2535 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2536 then echo 1; else echo 0; fi`],
2537 [Define 0/1 if your assembler supports .cfi_sections.])
2539 # GAS versions up to and including 2.11.0 may mis-optimize
2541 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2549 .section .eh_frame,"aw",@progbits
2551 .4byte .LECIE1-.LSCIE1
2565 .4byte .LEFDE1-.LASFDE1
2567 .4byte .LASFDE1-__FRAME_BEGIN__
2575 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2576 cat > conftest.lit <<EOF
2577 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2578 0010 01000000 12000000 18000000 00000000 ................
2579 0020 08000000 04080000 0044 .........D @&t@
2581 cat > conftest.big <<EOF
2582 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2583 0010 00000001 00000012 00000018 00000000 ................
2584 0020 00000008 04000000 0844 .........D @&t@
2586 # If the assembler didn't choke, and we can objdump,
2587 # and we got the correct data, then succeed.
2588 # The text in the here-document typically retains its unix-style line
2589 # endings, while the output of objdump will use host line endings.
2590 # Therefore, use diff -b for the comparisons.
2591 if test x$gcc_cv_objdump != x \
2592 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2593 | tail -3 > conftest.got \
2594 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2595 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2597 gcc_cv_as_eh_frame=yes
2598 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2599 gcc_cv_as_eh_frame=buggy
2601 # Uh oh, what do we do now?
2602 gcc_cv_as_eh_frame=no
2605 if test $gcc_cv_as_eh_frame = buggy; then
2606 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2607 [Define if your assembler mis-optimizes .eh_frame data.])
2610 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2611 [elf,2,12,0], [--fatal-warnings],
2612 [.section .rodata.str, "aMS", @progbits, 1])
2613 if test $gcc_cv_as_shf_merge = no; then
2614 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2615 [elf,2,12,0], [--fatal-warnings],
2616 [.section .rodata.str, "aMS", %progbits, 1])
2618 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2619 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2620 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2622 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2623 gcc_cv_as_comdat_group,
2624 [elf,2,16,0], [--fatal-warnings],
2625 [.section .text,"axG",@progbits,.foo,comdat])
2626 if test $gcc_cv_as_comdat_group = yes; then
2627 gcc_cv_as_comdat_group_percent=no
2628 gcc_cv_as_comdat_group_group=no
2630 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2631 gcc_cv_as_comdat_group_percent,
2632 [elf,2,16,0], [--fatal-warnings],
2633 [.section .text,"axG",%progbits,.foo,comdat])
2634 if test $gcc_cv_as_comdat_group_percent = yes; then
2635 gcc_cv_as_comdat_group_group=no
2638 # Sun as uses a completely different syntax.
2643 .group foo,".text%foo",#comdat
2644 .section ".text%foo", #alloc,#execinstr,#progbits
2649 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2651 .group foo,.text%foo,#comdat
2652 .section .text%foo, "ax", @progbits
2658 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2659 gcc_cv_as_comdat_group_group,
2665 if test x"$ld_is_gold" = xyes; then
2667 elif test $in_tree_ld = yes ; then
2669 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2670 && test $in_tree_ld_is_elf = yes; then
2673 elif echo "$ld_ver" | grep GNU > /dev/null; then
2675 if test 0"$ld_date" -lt 20050308; then
2676 if test -n "$ld_date"; then
2677 # If there was date string, but was earlier than 2005-03-08, fail
2679 elif test "$ld_vers_major" -lt 2; then
2681 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2688 *-*-solaris2.1[1-9]*)
2690 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2691 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2694 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2695 # least ld version 1.2267.
2696 if test "$ld_vers_major" -gt 1; then
2698 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2700 elif test "$ld_vers_minor" -ge 2267; then
2705 # Assume linkers other than GNU ld don't support COMDAT group.
2711 # Allow overriding the automatic COMDAT group tests above.
2712 AC_ARG_ENABLE(comdat,
2713 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2714 [comdat_group="$enable_comdat"])
2715 if test $comdat_group = no; then
2716 gcc_cv_as_comdat_group=no
2717 gcc_cv_as_comdat_group_percent=no
2718 gcc_cv_as_comdat_group_group=no
2720 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2721 [`if test $gcc_cv_as_comdat_group = yes \
2722 || test $gcc_cv_as_comdat_group_percent = yes \
2723 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2724 [Define 0/1 if your assembler and linker support COMDAT groups.])
2726 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2727 gcc_cv_as_discriminator,
2731 .loc 1 1 0 discriminator 1],,
2732 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2733 [Define if your assembler supports the .loc discriminator sub-directive.])])
2735 # Thread-local storage - the check is heavily parameterized.
2744 .section ".tdata","awT",@progbits
2747 ldq $27,__tls_get_addr($29) !literal!1
2748 lda $16,foo($29) !tlsgd!1
2749 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2750 ldq $27,__tls_get_addr($29) !literal!2
2751 lda $16,foo($29) !tlsldm!2
2752 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2753 ldq $1,foo($29) !gotdtprel
2754 ldah $2,foo($29) !dtprelhi
2755 lda $3,foo($2) !dtprello
2756 lda $4,foo($29) !dtprel
2757 ldq $1,foo($29) !gottprel
2758 ldah $2,foo($29) !tprelhi
2759 lda $3,foo($2) !tprello
2760 lda $4,foo($29) !tprel'
2763 tls_as_opt=--fatal-warnings
2765 cris-*-*|crisv32-*-*)
2767 .section ".tdata","awT",@progbits
2774 tls_as_opt=--fatal-warnings
2778 .section ".tdata","awT",@progbits
2790 .section ".tdata","awT",@progbits
2794 addil LT%foo-$tls_gdidx$,gp
2795 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2798 addil LT%foo-$tls_ldidx$,gp
2800 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2801 addil LR%foo-$tls_dtpoff$,%ret0
2802 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2804 addil LT%foo-$tls_ieoff$,gp
2805 ldw RT%foo-$tls_ieoff$(%r1),%t2
2808 addil LR%foo-$tls_leoff$,%t1
2809 ldo RR%foo-$tls_leoff$(%r1),%t2'
2812 tls_as_opt=--fatal-warnings
2816 .section ".tdata","awT",%progbits
2827 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2829 i[34567]86-*-solaris2.*)
2831 tga_func=___tls_get_addr
2833 x86_64-*-solaris2.1[0-9]*)
2835 tga_func=__tls_get_addr
2841 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2843 .section .tdata,"awt",@progbits'
2847 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2848 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2852 .section ".tdata","awT",@progbits'
2855 tls_as_opt="--fatal-warnings"
2857 conftest_s="$conftest_s
2861 leal foo@tlsgd(,%ebx,1), %eax
2862 leal foo@tlsldm(%ebx), %eax
2863 leal foo@dtpoff(%eax), %edx
2864 movl foo@gottpoff(%ebx), %eax
2865 subl foo@gottpoff(%ebx), %eax
2866 addl foo@gotntpoff(%ebx), %eax
2867 movl foo@indntpoff, %eax
2868 movl \$foo@tpoff, %eax
2869 subl \$foo@tpoff, %eax
2870 leal foo@ntpoff(%ecx), %eax"
2874 .section ".tdata","awT",@progbits
2878 leaq foo@TLSGD(%rip), %rdi
2879 leaq foo@TLSLD(%rip), %rdi
2880 leaq foo@DTPOFF(%rax), %rdx
2881 movq foo@GOTTPOFF(%rip), %rax
2882 movq $foo@TPOFF, %rax'
2885 tls_as_opt=--fatal-warnings
2889 .section ".tdata","awT",@progbits
2892 addl r16 = @ltoff(@dtpmod(foo#)), gp
2893 addl r17 = @ltoff(@dtprel(foo#)), gp
2894 addl r18 = @ltoff(@tprel(foo#)), gp
2895 addl r19 = @dtprel(foo#), gp
2896 adds r21 = @dtprel(foo#), r13
2897 movl r23 = @dtprel(foo#)
2898 addl r20 = @tprel(foo#), gp
2899 adds r22 = @tprel(foo#), r13
2900 movl r24 = @tprel(foo#)'
2903 tls_as_opt=--fatal-warnings
2907 .section .tdata,"awT",@progbits
2911 addiu $4, $28, %tlsgd(x)
2912 addiu $4, $28, %tlsldm(x)
2913 lui $4, %dtprel_hi(x)
2914 addiu $4, $4, %dtprel_lo(x)
2915 lw $4, %gottprel(x)($28)
2916 lui $4, %tprel_hi(x)
2917 addiu $4, $4, %tprel_lo(x)'
2920 tls_as_opt='-32 --fatal-warnings'
2924 .section .tdata,"awT",@progbits
2929 move.l x@TLSGD(%a5),%a0
2930 move.l x@TLSLDM(%a5),%a0
2931 move.l x@TLSLDO(%a5),%a0
2932 move.l x@TLSIE(%a5),%a0
2933 move.l x@TLSLE(%a5),%a0'
2936 tls_as_opt='--fatal-warnings'
2940 .section ".tdata","awT",@progbits
2948 addi 3,31,ld0@got@tlsgd
2950 addi 3,31,x1@got@tlsld
2953 addis 9,3,x2@dtprel@ha
2954 addi 9,9,x2@dtprel@l
2955 lwz 9,x3@got@tprel(31)
2958 addis 9,2,x2@tprel@ha
2959 addi 9,9,x2@tprel@l'
2962 tls_as_opt="-a32 --fatal-warnings"
2966 .section ".tdata","awT",@progbits
2974 addi 3,2,ld0@got@tlsgd
2980 addi 3,2,x1@got@tlsld
2986 addis 9,3,x2@dtprel@ha
2987 addi 9,9,x2@dtprel@l
2990 ld 9,x3@got@dtprel(2)
2996 tls_as_opt="-a64 --fatal-warnings"
3000 .section ".tdata","awT",@progbits
3009 l %r1,foo@GOTNTPOFF(%r12)
3010 l %r1,0(%r1):tls_load:foo
3011 bas %r14,0(%r1,%r13):tls_gdcall:foo
3012 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3015 tls_as_opt="-m31 --fatal-warnings"
3019 .section ".tdata","awT",@progbits
3027 lg %r1,foo@GOTNTPOFF(%r12)
3028 larl %r1,foo@INDNTPOFF
3029 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3030 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3033 tls_as_opt="-m64 -Aesame --fatal-warnings"
3035 sh-*-* | sh[34]-*-*)
3037 .section ".tdata","awT",@progbits
3047 tls_as_opt=--fatal-warnings
3051 sparc*-sun-solaris2.*)
3053 tga_func=__tls_get_addr
3059 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3061 .section ".tdata",#alloc,#write,#tls'
3066 .section ".tdata","awT",@progbits'
3069 tls_as_opt="-32 --fatal-warnings"
3071 conftest_s="$conftest_s
3074 sethi %tgd_hi22(foo), %o0
3075 add %o0, %tgd_lo10(foo), %o1
3076 add %l7, %o1, %o0, %tgd_add(foo)
3077 call __tls_get_addr, %tgd_call(foo)
3078 sethi %tldm_hi22(foo), %l1
3079 add %l1, %tldm_lo10(foo), %l2
3080 add %l7, %l2, %o0, %tldm_add(foo)
3081 call __tls_get_addr, %tldm_call(foo)
3082 sethi %tldo_hix22(foo), %l3
3083 xor %l3, %tldo_lox10(foo), %l4
3084 add %o0, %l4, %l5, %tldo_add(foo)
3085 sethi %tie_hi22(foo), %o3
3086 add %o3, %tie_lo10(foo), %o3
3087 ld [%l7 + %o3], %o2, %tie_ld(foo)
3088 add %g7, %o2, %o4, %tie_add(foo)
3089 sethi %tle_hix22(foo), %l1
3090 xor %l1, %tle_lox10(foo), %o5
3091 ld [%g7 + %o5], %o1"
3095 .section ".tdata","awT",@progbits
3098 movi a8, foo@TLSFUNC
3099 movi a10, foo@TLSARG
3100 callx8.tls a8, foo@TLSCALL'
3107 if test "x$enable_tls" = xno ; then
3108 : # TLS explicitly disabled.
3109 elif test "x$enable_tls" = xyes ; then
3110 set_have_as_tls=yes # TLS explicitly enabled.
3111 elif test -z "$tls_first_major"; then
3112 : # If we don't have a check, assume no support.
3114 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3115 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3116 [set_have_as_tls=yes])
3120 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3121 # with TLS support are in use, native TLS cannot work.
3125 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3126 # gld with TLS support are in use, native TLS cannot work.
3129 # TLS was introduced in the Solaris 9 FCS release and backported to
3130 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3131 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3132 # ld and GCC don't support any longer.
3134 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3136 # Check ld and ld.so.1 TLS support.
3137 if echo "$ld_ver" | grep GNU > /dev/null; then
3138 # Assume all interesting versions of GNU ld have TLS support.
3139 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3143 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3145 min_tls_ld_vers_minor=280
3147 # Solaris 8/SPARC ld has TLS support since version 1.272.
3148 sparc*-*-solaris2.8)
3149 min_tls_ld_vers_minor=272
3151 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3153 min_tls_ld_vers_minor=374
3155 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3156 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3157 min_tls_ld_vers_minor=343
3160 if test "$ld_vers_major" -gt 1 || \
3161 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3167 AC_MSG_RESULT($ld_tls_support)
3170 save_LDFLAGS="$LDFLAGS"
3174 AC_MSG_CHECKING(alternate thread library)
3176 # TLS support was backported to Solaris 8 patches, but only lives in
3177 # the alternate thread library which became the default in Solaris 9.
3178 # We want to always use that, irrespective of TLS support.
3180 # Take multilib subdir into account. There's no spec to handle
3181 # this. The 64 symlink exists since Solaris 8.
3182 lwp_dir=/usr/lib/lwp
3183 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3184 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3191 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3192 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3193 [Define to the linker flags to use for -pthread.])
3194 AC_MSG_RESULT($lwp_dir)
3196 AC_MSG_CHECKING(library containing $tga_func)
3197 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3198 # (32-bit x86) only lived in libthread, so check for that. Keep
3199 # set_have_as_tls if found, disable if not.
3200 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3201 # Clear LIBS if we cannot support TLS.
3202 if test $set_have_as_tls = no; then
3205 # Always define LIB_TLS_SPEC, even without TLS support.
3206 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3207 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3208 AC_MSG_RESULT($LIBS)
3211 LDFLAGS="$save_LDFLAGS"
3214 if test $set_have_as_tls = yes ; then
3215 AC_DEFINE(HAVE_AS_TLS, 1,
3216 [Define if your assembler and linker support thread-local storage.])
3219 # Target-specific assembler checks.
3221 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3222 gcc_cv_ld_static_dynamic=no
3223 gcc_cv_ld_static_option='-Bstatic'
3224 gcc_cv_ld_dynamic_option='-Bdynamic'
3225 if test $in_tree_ld = yes ; then
3226 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3227 gcc_cv_ld_static_dynamic=yes
3229 elif test x$gcc_cv_ld != x; then
3230 # Check if linker supports -Bstatic/-Bdynamic option
3231 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3232 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3233 gcc_cv_ld_static_dynamic=yes
3236 # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic.
3238 gcc_cv_ld_static_dynamic=yes
3239 gcc_cv_ld_static_option="-noso"
3240 gcc_cv_ld_dynamic_option="-so_archive"
3242 # IRIX 6 ld supports -Bstatic/-Bdynamic.
3244 gcc_cv_ld_static_dynamic=yes
3246 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3248 gcc_cv_ld_static_dynamic=yes
3253 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3254 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3255 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3256 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3257 [Define to the linker option to disable use of shared objects.])
3258 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3259 [Define to the linker option to enable use of shared objects.])
3261 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3263 if test x"$demangler_in_ld" = xyes; then
3264 AC_MSG_CHECKING(linker --demangle support)
3265 gcc_cv_ld_demangle=no
3266 if test $in_tree_ld = yes; then
3267 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3268 gcc_cv_ld_demangle=yes
3270 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3271 # Check if the GNU linker supports --demangle option
3272 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3273 gcc_cv_ld_demangle=yes
3276 if test x"$gcc_cv_ld_demangle" = xyes; then
3277 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3278 [Define if your linker supports --demangle option.])
3280 AC_MSG_RESULT($gcc_cv_ld_demangle)
3283 AC_MSG_CHECKING(linker plugin support)
3285 if test -f liblto_plugin.la; then
3286 save_ld_ver="$ld_ver"
3287 save_ld_vers_major="$ld_vers_major"
3288 save_ld_vers_minor="$ld_vers_minor"
3289 save_ld_is_gold="$ld_is_gold"
3293 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3295 # FIXME: ld_is_gold?
3296 ld_vers_major="$gcc_cv_gld_major_version"
3297 ld_vers_minor="$gcc_cv_gld_minor_version"
3299 # Determine plugin linker version.
3300 # FIXME: Partial duplicate from above, generalize.
3302 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3303 if echo "$ld_ver" | grep GNU > /dev/null; then
3304 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3306 ld_vers=`echo $ld_ver | sed -n \
3307 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3309 ld_vers=`echo $ld_ver | sed -n \
3310 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3312 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3313 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3318 # Determine plugin support.
3319 if echo "$ld_ver" | grep GNU > /dev/null; then
3320 # Require GNU ld or gold 2.21+ for plugin support by default.
3321 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3323 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3324 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3329 ld_ver="$save_ld_ver"
3330 ld_vers_major="$save_ld_vers_major"
3331 ld_vers_minor="$save_ld_vers_minor"
3332 ld_is_gold="$save_ld_is_gold"
3334 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3335 [Define to the level of your linker's plugin support.])
3336 AC_MSG_RESULT($gcc_cv_lto_plugin)
3339 # All TARGET_ABI_OSF targets.
3340 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3341 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3342 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3345 extbl $3, $2, $3 !lituse_bytoff!1
3346 ldq $2, a($29) !literal!1
3347 ldq $4, b($29) !literal!2
3348 ldq_u $3, 0($2) !lituse_base!1
3349 ldq $27, f($29) !literal!5
3350 jsr $26, ($27), f !lituse_jsr!5
3351 ldah $29, 0($26) !gpdisp!3
3352 lda $0, c($29) !gprel
3353 ldah $1, d($29) !gprelhigh
3354 lda $1, d($1) !gprellow
3355 lda $29, 0($29) !gpdisp!3],,
3356 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3357 [Define if your assembler supports explicit relocations.])])
3358 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3359 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3362 ldq $27, a($29) !literal!1
3363 jsr $26, ($27), a !lituse_jsrdirect!1],,
3364 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3365 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3369 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3370 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3371 [-no-mul-bug-abort], [.text],,
3372 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3373 [Define if your assembler supports the -no-mul-bug-abort option.])])
3377 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3378 [.register %g2, #scratch],,
3379 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3380 [Define if your assembler supports .register.])])
3382 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3384 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3385 [Define if your assembler supports -relax option.])])
3387 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3388 gcc_cv_as_sparc_gotdata_op,,
3395 sethi %gdop_hix22(foo), %g1
3396 xor %g1, %gdop_lox10(foo), %g1
3397 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3398 [if test x$gcc_cv_ld != x \
3399 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3400 if test x$gcc_cv_objdump != x; then
3401 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3402 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3403 gcc_cv_as_sparc_gotdata_op=no
3405 gcc_cv_as_sparc_gotdata_op=yes
3410 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3411 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3413 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3414 gcc_cv_as_sparc_ua_pcrel,,
3422 .uaword %r_disp32(foo)],
3423 [if test x$gcc_cv_ld != x \
3424 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3425 gcc_cv_as_sparc_ua_pcrel=yes
3428 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3429 [Define if your assembler and linker support unaligned PC relative relocs.])
3431 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3432 gcc_cv_as_sparc_ua_pcrel_hidden,,
3437 .uaword %r_disp32(foo)
3438 .byte 0x32, 0x33, 0x34
3443 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3444 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3445 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3446 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3447 if $gcc_cv_objdump -R conftest 2> /dev/null \
3448 | grep 'DISP32' > /dev/null 2>&1; then
3451 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3455 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3456 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3457 ]) # unaligned pcrel relocs
3459 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3460 gcc_cv_as_sparc_offsetable_lo10,,
3463 or %g1, %lo(ab) + 12, %g1
3464 or %g1, %lo(ab + 12), %g1],
3465 [if test x$gcc_cv_objdump != x \
3466 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3467 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3468 gcc_cv_as_sparc_offsetable_lo10=yes
3470 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3471 [Define if your assembler supports offsetable %lo().])])
3475 i[34567]86-*-* | x86_64-*-*)
3479 # Full C++ conformance when using a shared libstdc++-v3 requires some
3480 # support from the Cygwin DLL, which in more recent versions exports
3481 # wrappers to aid in interposing and redirecting operators new, delete,
3482 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3483 # are configuring for a version of Cygwin that exports the wrappers.
3484 if test x$host = x$target; then
3485 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3487 # Can't check presence of libc functions during cross-compile, so
3488 # we just have to assume we're building for an up-to-date target.
3489 gcc_ac_cygwin_dll_wrappers=yes
3491 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3492 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3493 [Define if you want to generate code by default that assumes that the
3494 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3497 cygwin* | pe | mingw32*)
3498 # Recent binutils allows the three-operand form of ".comm" on PE. This
3499 # definition is used unconditionally to initialise the default state of
3500 # the target option variable that governs usage of the feature.
3501 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3502 [2,19,52],,[.comm foo,1,32])
3503 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3504 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3505 [Define if your assembler supports specifying the alignment
3506 of objects allocated using the GAS .comm command.])
3507 # Used for DWARF 2 in PE
3508 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3509 gcc_cv_as_ix86_pe_secrel32,
3515 [if test x$gcc_cv_ld != x \
3516 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3517 gcc_cv_as_ix86_pe_secrel32=yes
3520 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3521 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3522 # Test if the assembler supports the extended form of the .section
3523 # directive that specifies section alignment. LTO support uses this,
3524 # but normally only after installation, so we warn but don't fail the
3525 # configure if LTO is enabled but the assembler does not support it.
3526 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3527 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3528 if test x$gcc_cv_as_section_has_align != xyes; then
3529 case ",$enable_languages," in
3531 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3538 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3539 gcc_cv_as_ix86_filds,,,
3540 [filds mem; fists mem],,
3541 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3542 [Define if your assembler uses filds and fists mnemonics.])])
3544 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3545 gcc_cv_as_ix86_fildq,,,
3546 [fildq mem; fistpq mem],,
3547 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3548 [Define if your assembler uses fildq and fistq mnemonics.])])
3550 gcc_GAS_CHECK_FEATURE([cmov syntax],
3551 gcc_cv_as_ix86_cmov_sun_syntax,,,
3552 [cmovl.l %edx, %eax],,
3553 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3554 [Define if your assembler supports the Sun syntax for cmov.])])
3556 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3557 gcc_cv_as_ix86_ffreep,,,
3559 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3560 [Define if your assembler supports the ffreep mnemonic.])])
3562 gcc_GAS_CHECK_FEATURE([.quad directive],
3563 gcc_cv_as_ix86_quad,,,
3565 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3566 [Define if your assembler supports the .quad directive.])])
3568 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3569 gcc_cv_as_ix86_sahf,,,
3572 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3573 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3575 gcc_GAS_CHECK_FEATURE([swap suffix],
3576 gcc_cv_as_ix86_swap,,,
3577 [movl.s %esp, %ebp],,
3578 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3579 [Define if your assembler supports the swap suffix.])])
3581 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3582 gcc_cv_as_ix86_diff_sect_delta,,,
3590 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3591 [Define if your assembler supports the subtraction of symbols in different sections.])])
3593 # These two are used unconditionally by i386.[ch]; it is to be defined
3594 # to 1 if the feature is present, 0 otherwise.
3595 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3596 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3602 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3603 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3604 [Define true if the assembler supports '.long foo@GOTOFF'.])
3606 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3607 gcc_cv_as_ix86_rep_lock_prefix,,,
3609 lock addl %edi, (%eax,%esi)
3610 lock orl $0, (%esp)],,
3611 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3612 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3614 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3615 gcc_cv_as_ix86_tlsgdplt,,,
3616 [call tls_gd@tlsgdplt],,
3617 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3618 [Define if your assembler supports @tlsgdplt.])])
3620 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3621 gcc_cv_as_ix86_tlsldmplt,,,
3622 [call tls_ld@tlsldmplt],,
3623 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3624 [Define if your assembler supports @tlsldmplt.])])
3629 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3630 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3632 addl r15 = @ltoffx(x#), gp
3634 ld8.mov r16 = [[r15]], x#],,
3635 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3636 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3642 *-*-aix*) conftest_s=' .machine "pwr5"
3646 gcc_GAS_CHECK_FEATURE([.machine directive support],
3647 gcc_cv_as_machine_directive,,,
3648 [ .machine ppc7400])
3649 if test x$gcc_cv_as_machine_directive != xyes; then
3650 echo "*** This target requires an assembler supporting \".machine\"" >&2
3651 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3652 test x$build = x$target && exit 1
3656 *) conftest_s=' .machine power4
3661 gcc_GAS_CHECK_FEATURE([mfcr field support],
3662 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3664 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3665 [Define if your assembler supports mfcr field.])])
3668 *-*-aix*) conftest_s=' .machine "pwr5"
3671 *) conftest_s=' .machine power5
3676 gcc_GAS_CHECK_FEATURE([popcntb support],
3677 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3679 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3680 [Define if your assembler supports popcntb field.])])
3683 *-*-aix*) conftest_s=' .machine "pwr5x"
3686 *) conftest_s=' .machine power5
3691 gcc_GAS_CHECK_FEATURE([fp round support],
3692 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3694 [AC_DEFINE(HAVE_AS_FPRND, 1,
3695 [Define if your assembler supports fprnd.])])
3698 *-*-aix*) conftest_s=' .machine "pwr6"
3701 *) conftest_s=' .machine power6
3706 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3707 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3709 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3710 [Define if your assembler supports mffgpr and mftgpr.])])
3713 *-*-aix*) conftest_s=' .csect .text[[PR]]
3715 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3719 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3720 *) conftest_s=' .text
3722 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3725 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3726 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3728 [AC_DEFINE(HAVE_AS_REL16, 1,
3729 [Define if your assembler supports R_PPC_REL16 relocs.])])
3732 *-*-aix*) conftest_s=' .machine "pwr6"
3735 *) conftest_s=' .machine power6
3740 gcc_GAS_CHECK_FEATURE([compare bytes support],
3741 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3743 [AC_DEFINE(HAVE_AS_CMPB, 1,
3744 [Define if your assembler supports cmpb.])])
3747 *-*-aix*) conftest_s=' .machine "pwr6"
3750 *) conftest_s=' .machine power6
3755 gcc_GAS_CHECK_FEATURE([decimal float support],
3756 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3758 [AC_DEFINE(HAVE_AS_DFP, 1,
3759 [Define if your assembler supports DFP instructions.])])
3762 *-*-aix*) conftest_s=' .machine "pwr7"
3765 *) conftest_s=' .machine power7
3770 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3771 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3773 [AC_DEFINE(HAVE_AS_VSX, 1,
3774 [Define if your assembler supports VSX instructions.])])
3777 *-*-aix*) conftest_s=' .machine "pwr7"
3780 *) conftest_s=' .machine power7
3785 gcc_GAS_CHECK_FEATURE([popcntd support],
3786 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3788 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3789 [Define if your assembler supports POPCNTD instructions.])])
3792 *-*-aix*) conftest_s=' .csect .text[[PR]]
3794 *) conftest_s=' .text
3798 gcc_GAS_CHECK_FEATURE([lwsync support],
3799 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3801 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3802 [Define if your assembler supports LWSYNC instructions.])])
3805 *-*-aix*) conftest_s=' .machine "476"
3808 *) conftest_s=' .machine "476"
3813 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3814 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3816 [AC_DEFINE(HAVE_AS_DCI, 1,
3817 [Define if your assembler supports the DCI/ICI instructions.])])
3819 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3820 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3821 [.gnu_attribute 4,1],,
3822 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3823 [Define if your assembler supports .gnu_attribute.])])
3825 gcc_GAS_CHECK_FEATURE([tls marker support],
3826 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3827 [ bl __tls_get_addr(x@tlsgd)],,
3828 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3829 [Define if your assembler supports arg info for __tls_get_addr.])])
3833 gcc_GAS_CHECK_FEATURE([.ref support],
3834 gcc_cv_as_aix_ref, [2.21.0],,
3835 [ .csect stuff[[rw]]
3841 [AC_DEFINE(HAVE_AS_REF, 1,
3842 [Define if your assembler supports .ref])])
3848 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3849 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3850 [ lw $4,%gp_rel(foo)($4)],,
3851 [if test x$target_cpu_default = x
3852 then target_cpu_default=MASK_EXPLICIT_RELOCS
3853 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3855 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3856 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3857 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3858 [Define if the assembler understands -mno-shared.])])
3860 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3861 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3862 [.gnu_attribute 4,1],,
3863 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3864 [Define if your assembler supports .gnu_attribute.])])
3866 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3867 gcc_cv_as_mips_dtprelword, [2,18,0],,
3868 [.section .tdata,"awT",@progbits
3872 .dtprelword x+0x8000],,
3873 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3874 [Define if your assembler supports .dtprelword.])])
3876 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3877 gcc_cv_as_mips_dspr1_mult,,,
3887 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3888 [Define if your assembler supports DSPR1 mult.])])
3890 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3891 gcc_cv_as_ld_jalr_reloc=no
3892 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3893 if test $in_tree_ld = yes ; then
3894 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3895 && test $in_tree_ld_is_elf = yes; then
3896 gcc_cv_as_ld_jalr_reloc=yes
3898 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3899 echo ' .ent x' > conftest.s
3900 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3901 echo ' ld $25,%call16(y)($28)' >> conftest.s
3902 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3903 echo '1: jalr $25' >> conftest.s
3904 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3905 echo '1: jalr $25' >> conftest.s
3906 echo ' .end x' >> conftest.s
3907 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3908 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3909 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3910 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3911 gcc_cv_as_ld_jalr_reloc=yes
3917 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3918 if test x$target_cpu_default = x; then
3919 target_cpu_default=MASK_RELAX_PIC_CALLS
3921 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3924 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3926 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3927 [gcc_cv_ld_mips_personality_relaxation],
3928 [gcc_cv_ld_mips_personality_relaxation=no
3929 if test $in_tree_ld = yes ; then
3930 if test "$gcc_cv_gld_major_version" -eq 2 \
3931 -a "$gcc_cv_gld_minor_version" -ge 21 \
3932 -o "$gcc_cv_gld_major_version" -gt 2; then
3933 gcc_cv_ld_mips_personality_relaxation=yes
3935 elif test x$gcc_cv_as != x \
3936 -a x$gcc_cv_ld != x \
3937 -a x$gcc_cv_readelf != x ; then
3938 cat > conftest.s <<EOF
3940 .cfi_personality 0x80,indirect_ptr
3947 .section .data,"aw",@progbits
3951 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3952 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3953 if $gcc_cv_readelf -d conftest 2>&1 \
3954 | grep TEXTREL > /dev/null 2>&1; then
3956 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3957 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3960 gcc_cv_ld_mips_personality_relaxation=yes
3964 rm -f conftest.s conftest.o conftest])
3965 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3966 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3967 [Define if your linker can relax absolute .eh_frame personality
3968 pointers into PC-relative form.])
3973 # Mips and HP-UX need the GNU assembler.
3974 # Linux on IA64 might be able to use the Intel assembler.
3977 mips*-*-* | *-*-hpux* )
3978 if test x$gas_flag = xyes \
3979 || test x"$host" != x"$build" \
3980 || test ! -x "$gcc_cv_as" \
3981 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3984 echo "*** This configuration requires the GNU assembler" >&2
3990 # ??? Not all targets support dwarf2 debug_line, even within a version
3991 # of gas. Moreover, we need to emit a valid instruction to trigger any
3992 # info to the output file. So, as supported targets are added to gas 2.11,
3993 # add some instruction here to (also) show we expect this might work.
3994 # ??? Once 2.11 is released, probably need to add first known working
3995 # version to the per-target configury.
3997 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
3998 | pa | rs6000 | score | sparc | spu | xstormy16 | xtensa)
4008 if test x"$insn" != x; then
4010 .file 1 \"conftest.s\"
4013 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4014 gcc_cv_as_dwarf2_debug_line,
4015 [elf,2,11,0],, [$conftest_s],
4016 [if test x$gcc_cv_objdump != x \
4017 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4018 | grep debug_line > /dev/null 2>&1; then
4019 gcc_cv_as_dwarf2_debug_line=yes
4022 # The .debug_line file table must be in the exact order that
4023 # we specified the files, since these indices are also used
4024 # by DW_AT_decl_file. Approximate this test by testing if
4025 # the assembler bitches if the same index is assigned twice.
4026 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4027 gcc_cv_as_dwarf2_file_buggy,,,
4031 if test $gcc_cv_as_dwarf2_debug_line = yes \
4032 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4033 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4034 [Define if your assembler supports dwarf2 .file/.loc directives,
4035 and preserves file table indices exactly as given.])
4038 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4039 gcc_cv_as_gdwarf2_flag,
4040 [elf,2,11,0], [--gdwarf2], [$insn],,
4041 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4042 [Define if your assembler supports the --gdwarf2 option.])])
4044 gcc_GAS_CHECK_FEATURE([--gstabs option],
4045 gcc_cv_as_gstabs_flag,
4046 [elf,2,11,0], [--gstabs], [$insn],
4047 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4048 # and warns about it, but still exits successfully. So check for
4050 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4052 else gcc_cv_as_gstabs_flag=yes
4054 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4055 [Define if your assembler supports the --gstabs option.])])
4057 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4058 gcc_cv_as_debug_prefix_map_flag,
4059 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4060 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4061 [Define if your assembler supports the --debug-prefix-map option.])])
4064 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4067 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4068 [Define if your assembler supports .lcomm with an alignment field.])])
4070 AC_ARG_ENABLE(gnu-unique-object,
4071 [AS_HELP_STRING([--enable-gnu-unique-object],
4072 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4073 [case $enable_gnu_unique_object in
4075 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4076 Valid choices are 'yes' and 'no'.]) ;;
4078 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4080 [.type foo, @gnu_unique_object],,
4081 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4082 [[if test x$host = x$build -a x$host = x$target &&
4083 ldd --version 2>/dev/null &&
4084 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4085 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4086 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4087 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4088 if test "$glibcnum" -ge 2011 ; then
4089 enable_gnu_unique_object=yes
4092 if test x$enable_gnu_unique_object = xyes; then
4093 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4094 [Define if your assembler supports @gnu_unique_object.])
4097 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4098 [gcc_cv_as_line_zero],
4099 [gcc_cv_as_line_zero=no
4100 if test $in_tree_gas = yes; then
4101 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4102 elif test "x$gcc_cv_as" != x; then
4103 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4104 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4105 test "x`cat conftest.out`" = x
4107 gcc_cv_as_line_zero=yes
4109 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4110 cat conftest.s >&AS_MESSAGE_LOG_FD
4111 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4112 cat conftest.out >&AS_MESSAGE_LOG_FD
4114 rm -f conftest.o conftest.s conftest.out
4116 if test "x$gcc_cv_as_line_zero" = xyes; then
4117 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4118 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4121 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4122 gcc_cv_ld_eh_frame_hdr=no
4123 if test $in_tree_ld = yes ; then
4124 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4125 && test $in_tree_ld_is_elf = yes; then
4126 gcc_cv_ld_eh_frame_hdr=yes
4128 elif test x$gcc_cv_ld != x; then
4129 if echo "$ld_ver" | grep GNU > /dev/null; then
4130 # Check if linker supports --eh-frame-hdr option
4131 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4132 gcc_cv_ld_eh_frame_hdr=yes
4137 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4138 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4139 gcc_cv_ld_eh_frame_hdr=yes
4145 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4146 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4147 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4148 [Define if your linker supports .eh_frame_hdr.])
4150 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4152 AC_MSG_CHECKING(linker position independent executable support)
4154 if test $in_tree_ld = yes ; then
4155 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4156 && test $in_tree_ld_is_elf = yes; then
4159 elif test x$gcc_cv_ld != x; then
4160 # Check if linker supports -pie option
4161 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4165 if test x"$gcc_cv_ld_pie" = xyes; then
4166 AC_DEFINE(HAVE_LD_PIE, 1,
4167 [Define if your linker supports -pie option.])
4169 AC_MSG_RESULT($gcc_cv_ld_pie)
4171 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4172 gcc_cv_ld_eh_gc_sections=no
4173 if test $in_tree_ld = yes ; then
4174 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4175 && test $in_tree_ld_is_elf = yes; then
4176 gcc_cv_ld_eh_gc_sections=yes
4178 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4179 cat > conftest.s <<EOF
4182 .type _start, @function
4185 .size _start, .-_start
4186 .section .text.foo,"ax",@progbits
4187 .type foo, @function
4191 .section .gcc_except_table.foo,"a",@progbits
4194 .section .eh_frame,"a",@progbits
4197 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4198 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4199 | grep "gc-sections option ignored" > /dev/null; then
4200 gcc_cv_ld_eh_gc_sections=no
4201 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4202 | grep gcc_except_table > /dev/null; then
4203 gcc_cv_ld_eh_gc_sections=yes
4204 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4205 if test x$gcc_cv_as_comdat_group != xyes; then
4206 gcc_cv_ld_eh_gc_sections=no
4207 cat > conftest.s <<EOF
4210 .type _start, @function
4213 .size _start, .-_start
4214 .section .gnu.linkonce.t.foo,"ax",@progbits
4215 .type foo, @function
4219 .section .gcc_except_table.foo,"a",@progbits
4222 .section .eh_frame,"a",@progbits
4225 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4226 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4227 | grep "gc-sections option ignored" > /dev/null; then
4228 gcc_cv_ld_eh_gc_sections=no
4229 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4230 | grep gcc_except_table > /dev/null; then
4231 gcc_cv_ld_eh_gc_sections=yes
4237 rm -f conftest.s conftest.o conftest
4241 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4242 gcc_cv_ld_eh_gc_sections=no
4245 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4246 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4247 [Define if your linker supports garbage collection of
4248 sections in presence of EH frames.])
4250 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4252 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4253 gcc_cv_ld_eh_gc_sections_bug=no
4254 if test $in_tree_ld = yes ; then
4255 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4256 && test $in_tree_ld_is_elf = yes; then
4257 gcc_cv_ld_eh_gc_sections_bug=yes
4259 elif test x$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
4260 gcc_cv_ld_eh_gc_sections_bug=yes
4261 cat > conftest.s <<EOF
4264 .type _start, @function
4267 .size _start, .-_start
4268 .section .text.startup.foo,"ax",@progbits
4269 .type foo, @function
4273 .section .gcc_except_table.foo,"a",@progbits
4276 .section .eh_frame,"a",@progbits
4279 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4280 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4281 | grep "gc-sections option ignored" > /dev/null; then
4283 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4284 | grep gcc_except_table > /dev/null; then
4285 gcc_cv_ld_eh_gc_sections_bug=no
4288 rm -f conftest.s conftest.o conftest
4290 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4291 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4292 [Define if your linker has buggy garbage collection of
4293 sections support when .text.startup.foo like sections are used.])
4295 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4301 AC_CACHE_CHECK(linker --as-needed support,
4302 gcc_cv_ld_as_needed,
4303 [gcc_cv_ld_as_needed=no
4304 if test $in_tree_ld = yes ; then
4305 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4306 && test $in_tree_ld_is_elf = yes; then
4307 gcc_cv_ld_as_needed=yes
4309 elif test x$gcc_cv_ld != x; then
4310 # Check if linker supports --as-needed and --no-as-needed options
4311 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4312 gcc_cv_ld_as_needed=yes
4316 if test x"$gcc_cv_ld_as_needed" = xyes; then
4317 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4318 [Define if your linker supports --as-needed and --no-as-needed options.])
4321 case "$target:$tm_file" in
4322 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4323 AC_CACHE_CHECK(linker support for omitting dot symbols,
4324 gcc_cv_ld_no_dot_syms,
4325 [gcc_cv_ld_no_dot_syms=no
4326 if test $in_tree_ld = yes ; then
4327 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4328 gcc_cv_ld_no_dot_syms=yes
4330 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4331 cat > conftest1.s <<EOF
4335 cat > conftest2.s <<EOF
4336 .section ".opd","aw"
4341 .quad .LEfoo,.TOC.@tocbase,0
4347 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4348 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4349 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4350 gcc_cv_ld_no_dot_syms=yes
4352 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4355 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4356 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4357 [Define if your PowerPC64 linker only needs function descriptor syms.])
4360 AC_CACHE_CHECK(linker large toc support,
4361 gcc_cv_ld_large_toc,
4362 [gcc_cv_ld_large_toc=no
4363 if test $in_tree_ld = yes ; then
4364 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4365 gcc_cv_ld_large_toc=yes
4367 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4368 cat > conftest.s <<EOF
4369 .section ".tbss","awT",@nobits
4375 addis 9,13,ie0@got@tprel@ha
4376 ld 9,ie0@got@tprel@l(9)
4378 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4379 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4380 gcc_cv_ld_large_toc=yes
4382 rm -f conftest conftest.o conftest.s
4385 if test x"$gcc_cv_ld_large_toc" = xyes; then
4386 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4387 [Define if your PowerPC64 linker supports a large TOC.])
4392 AC_CACHE_CHECK(linker --build-id support,
4394 [gcc_cv_ld_buildid=no
4395 if test $in_tree_ld = yes ; then
4396 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4397 "$gcc_cv_gld_minor_version" -ge 18 -o \
4398 "$gcc_cv_gld_major_version" -gt 2 \
4399 && test $in_tree_ld_is_elf = yes; then
4400 gcc_cv_ld_buildid=yes
4402 elif test x$gcc_cv_ld != x; then
4403 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4404 gcc_cv_ld_buildid=yes
4407 if test x"$gcc_cv_ld_buildid" = xyes; then
4408 AC_DEFINE(HAVE_LD_BUILDID, 1,
4409 [Define if your linker supports --build-id.])
4412 AC_ARG_ENABLE(linker-build-id,
4413 [AS_HELP_STRING([--enable-linker-build-id],
4414 [compiler will always pass --build-id to linker])],
4416 enable_linker_build_id=no)
4418 if test x"$enable_linker_build_id" = xyes; then
4419 if test x"$gcc_cv_ld_buildid" = xyes; then
4420 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4421 [Define if gcc should always pass --build-id to linker.])
4423 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4427 # In binutils 2.21, GNU ld gained support for new emulations fully
4428 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4429 AC_CACHE_CHECK(linker *_sol2 emulation support,
4430 gcc_cv_ld_sol2_emulation,
4431 [gcc_cv_ld_sol2_emulation=no
4432 if test $in_tree_ld = yes ; then
4433 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4434 "$gcc_cv_gld_minor_version" -ge 21 -o \
4435 "$gcc_cv_gld_major_version" -gt 2 \
4436 && test $in_tree_ld_is_elf = yes; then
4437 gcc_cv_ld_sol2_emulation=yes
4439 elif test x$gcc_cv_ld != x; then
4440 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4441 grep _sol2 > /dev/null; then
4442 gcc_cv_ld_sol2_emulation=yes
4445 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4446 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4447 [Define if your linker supports the *_sol2 emulations.])
4450 AC_CACHE_CHECK(linker --sysroot support,
4452 [gcc_cv_ld_sysroot=no
4453 if test $in_tree_ld = yes ; then
4454 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4455 gcc_cv_ld_sysroot=yes
4457 elif test x$gcc_cv_ld != x; then
4458 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4459 gcc_cv_ld_sysroot=yes
4462 if test x"$gcc_cv_ld_sysroot" = xyes; then
4463 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4464 [Define if your linker supports --sysroot.])
4467 if test x$with_sysroot = x && test x$host = x$target \
4468 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4469 && test "$prefix" != "NONE"; then
4470 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4471 [Define to PREFIX/include if cpp should also search that directory.])
4474 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4475 if test "x$with_headers" != x; then
4476 target_header_dir=$with_headers
4477 elif test "x$with_sysroot" = x; then
4478 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4479 elif test "x$with_build_sysroot" != "x"; then
4480 target_header_dir="${with_build_sysroot}/usr/include"
4481 elif test "x$with_sysroot" = xyes; then
4482 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4484 target_header_dir="${with_sysroot}/usr/include"
4487 target_header_dir=/usr/include
4490 # Test for stack protector support in target C library.
4491 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4492 gcc_cv_libc_provides_ssp,
4493 [gcc_cv_libc_provides_ssp=no
4495 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4496 [# glibc 2.4 and later provides __stack_chk_fail and
4497 # either __stack_chk_guard, or TLS access to stack guard canary.
4498 if test -f $target_header_dir/features.h \
4499 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4500 $target_header_dir/features.h > /dev/null; then
4501 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4502 $target_header_dir/features.h > /dev/null; then
4503 gcc_cv_libc_provides_ssp=yes
4504 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4505 $target_header_dir/features.h > /dev/null \
4506 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4507 $target_header_dir/features.h > /dev/null; then
4508 gcc_cv_libc_provides_ssp=yes
4509 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4510 $target_header_dir/features.h > /dev/null && \
4511 test -f $target_header_dir/bits/uClibc_config.h && \
4512 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4513 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4514 gcc_cv_libc_provides_ssp=yes
4519 # Avoid complicated tests (see
4520 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4521 # simply assert that glibc does provide this, which is true for all
4522 # realistically usable GNU/Hurd configurations.
4523 gcc_cv_libc_provides_ssp=yes;;
4524 *-*-darwin* | *-*-freebsd*)
4525 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4526 [echo "no __stack_chk_fail on this target"])
4528 *) gcc_cv_libc_provides_ssp=no ;;
4531 if test x$gcc_cv_libc_provides_ssp = xyes; then
4532 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4533 [Define if your target C library provides stack protector support])
4536 # Test for <sys/sdt.h> on the target.
4537 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4538 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4540 if test -f $target_header_dir/sys/sdt.h; then
4541 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4542 [Define if your target C library provides sys/sdt.h])
4544 AC_MSG_RESULT($have_sys_sdt_h)
4546 # Check if TFmode long double should be used by default or not.
4547 # Some glibc targets used DFmode long double, but with glibc 2.4
4548 # and later they can use TFmode.
4550 powerpc*-*-linux* | \
4554 AC_ARG_WITH(long-double-128,
4555 [AS_HELP_STRING([--with-long-double-128],
4556 [use 128-bit long double by default])],
4557 gcc_cv_target_ldbl128="$with_long_double_128",
4558 [[gcc_cv_target_ldbl128=no
4559 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4560 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4561 && gcc_cv_target_ldbl128=yes
4565 if test x$gcc_cv_target_ldbl128 = xyes; then
4566 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4567 [Define if TFmode long double should be the default])
4570 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4571 gcc_cv_target_dl_iterate_phdr=unknown
4574 # <link.h> needs both a dl_iterate_phdr declaration and support for
4575 # compilation with largefile support.
4576 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4577 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4578 gcc_cv_target_dl_iterate_phdr=yes
4580 gcc_cv_target_dl_iterate_phdr=no
4584 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4585 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4586 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4587 [Define if your target C library provides the `dl_iterate_phdr' function.])
4589 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4591 # Find out what GC implementation we want, or may, use.
4593 [AS_HELP_STRING([--with-gc={page,zone}],
4594 [choose the garbage collection mechanism to use
4595 with the compiler])],
4602 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4605 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4610 echo "Using $GGC for garbage collection."
4612 # Libraries to use on the host. This will normally be set by the top
4613 # level Makefile. Here we simply capture the value for our Makefile.
4614 if test -z "${HOST_LIBS+set}"; then
4619 # Use the system's zlib library.
4621 zlibinc="-I\$(srcdir)/../zlib"
4622 AC_ARG_WITH(system-zlib,
4623 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4630 dnl Very limited version of automake's enable-maintainer-mode
4632 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4633 dnl maintainer-mode is disabled by default
4634 AC_ARG_ENABLE(maintainer-mode,
4635 [AS_HELP_STRING([--enable-maintainer-mode],
4636 [enable make rules and dependencies not useful
4637 (and sometimes confusing) to the casual installer])],
4638 maintainer_mode=$enableval,
4641 AC_MSG_RESULT($maintainer_mode)
4643 if test "$maintainer_mode" = "yes"; then
4654 # Make empty files to contain the specs and options for each language.
4655 # Then add #include lines to for a compiler that has specs and/or options.
4661 # These (without "all_") are set in each config-lang.in.
4662 # `language' must be a single word so is spelled singularly.
4665 all_outputs='Makefile'
4666 # List of language makefile fragments.
4668 # Additional files for gengtype
4669 all_gtfiles="$target_gtfiles"
4671 # These are the languages that are set in --enable-languages,
4672 # and are available in the GCC tree.
4673 all_selected_languages=
4675 # Add the language fragments.
4676 # Languages are added via two mechanisms. Some information must be
4677 # recorded in makefile variables, these are defined in config-lang.in.
4678 # We accumulate them and plug them into the main Makefile.
4679 # The other mechanism is a set of hooks for each of the main targets
4680 # like `clean', `install', etc.
4682 language_hooks="Make-hooks"
4684 for lang in ${srcdir}/*/config-lang.in
4687 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4689 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4690 if test "x$lang_alias" = x
4692 echo "$lang doesn't set \$language." 1>&2
4695 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4696 subdirs="$subdirs $subdir"
4698 # $gcc_subdir is where the gcc integration files are to be found
4699 # for a language, both for internal compiler purposes (compiler
4700 # sources implementing front-end to GCC tree converters), and for
4701 # build infrastructure purposes (Make-lang.in, etc.)
4703 # This will be <subdir> (relative to $srcdir) if a line like
4704 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4705 # is found in <langdir>/config-lang.in, and will remain <langdir>
4708 # Except for the language alias (fetched above), the regular
4709 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4710 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4711 # only this and the language alias.
4713 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4714 if [ "$gcc_subdir" = "" ]; then
4715 gcc_subdir="$subdir"
4718 case ",$enable_languages," in
4720 all_selected_languages="$all_selected_languages $lang_alias"
4721 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4722 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4734 . ${srcdir}/$gcc_subdir/config-lang.in
4735 if test "x$language" = x
4737 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4742 case ",$enable_languages," in
4745 for i in $subdir_requires; do
4746 test -f "${srcdir}/$i/config-lang.in" && continue
4754 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4755 if test -f $srcdir/$gcc_subdir/lang.opt; then
4756 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4757 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4759 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4760 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4762 all_languages="$all_languages $language"
4763 all_compilers="$all_compilers $compilers"
4764 all_outputs="$all_outputs $outputs"
4765 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4766 case ",$enable_languages," in
4768 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4770 AC_SUBST(enable_lto)
4776 # Pick up gtfiles for c
4778 . ${srcdir}/c-config-lang.in
4779 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4782 for language in $all_selected_languages
4784 check_languages="$check_languages check-$language"
4787 # We link each language in with a set of hooks, reached indirectly via
4788 # lang.${target}. Only do so for selected languages.
4792 target_list="all.cross start.encap rest.encap tags \
4793 install-common install-man install-info install-pdf install-html dvi \
4794 pdf html uninstall info man srcextra srcman srcinfo \
4795 mostlyclean clean distclean maintainer-clean install-plugin"
4797 for t in $target_list
4800 for lang in $all_selected_languages
4804 echo "lang.$t: $x" >> Make-hooks
4808 # Option include files
4811 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4812 option_includes="option-includes.mk"
4813 AC_SUBST_FILE(option_includes)
4821 echo "dir ." > .gdbinit
4822 echo "dir ${srcdir}" >> .gdbinit
4823 if test x$gdb_needs_out_file_path = xyes
4825 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4827 if test "x$subdirs" != x; then
4830 echo "dir ${srcdir}/$s" >> .gdbinit
4833 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4835 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4836 AC_SUBST(gcc_tooldir)
4839 # Find a directory in which to install a shared libgcc.
4841 AC_ARG_ENABLE(version-specific-runtime-libs,
4842 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
4843 [specify that runtime libraries should be
4844 installed in a compiler-specific directory])])
4846 AC_ARG_WITH(slibdir,
4847 [AS_HELP_STRING([--with-slibdir=DIR], [shared libraries in DIR @<:@LIBDIR@:>@])],
4848 slibdir="$with_slibdir",
4849 if test "${enable_version_specific_runtime_libs+set}" = set; then
4850 slibdir='$(libsubdir)'
4851 elif test "$host" != "$target"; then
4852 slibdir='$(build_tooldir)/lib'
4858 # Substitute configuration variables
4861 AC_SUBST(all_compilers)
4862 AC_SUBST(all_gtfiles)
4863 AC_SUBST(all_lang_makefrags)
4864 AC_SUBST(all_languages)
4865 AC_SUBST(all_selected_languages)
4866 AC_SUBST(build_exeext)
4867 AC_SUBST(build_install_headers_dir)
4868 AC_SUBST(build_xm_file_list)
4869 AC_SUBST(build_xm_include_list)
4870 AC_SUBST(build_xm_defines)
4871 AC_SUBST(build_file_translate)
4872 AC_SUBST(check_languages)
4873 AC_SUBST(cpp_install_dir)
4874 AC_SUBST(xmake_file)
4875 AC_SUBST(tmake_file)
4876 AC_SUBST(TM_ENDIAN_CONFIG)
4877 AC_SUBST(TM_MULTILIB_CONFIG)
4878 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4879 AC_SUBST(extra_gcc_objs)
4880 AC_SUBST(user_headers_inc_next_pre)
4881 AC_SUBST(user_headers_inc_next_post)
4882 AC_SUBST(extra_headers_list)
4883 AC_SUBST(extra_objs)
4884 AC_SUBST(extra_parts)
4885 AC_SUBST(extra_passes)
4886 AC_SUBST(extra_programs)
4887 AC_SUBST(float_h_file)
4888 AC_SUBST(gcc_config_arguments)
4889 AC_SUBST(gcc_gxx_include_dir)
4890 AC_SUBST(host_exeext)
4891 AC_SUBST(host_xm_file_list)
4892 AC_SUBST(host_xm_include_list)
4893 AC_SUBST(host_xm_defines)
4894 AC_SUBST(out_host_hook_obj)
4896 AC_SUBST(lang_opt_files)
4897 AC_SUBST(lang_specs_files)
4898 AC_SUBST(lang_tree_files)
4899 AC_SUBST(local_prefix)
4901 AC_SUBST(objc_boehm_gc)
4903 AC_SUBST(out_object_file)
4904 AC_SUBST(common_out_file)
4905 AC_SUBST(common_out_object_file)
4906 AC_SUBST(thread_file)
4907 AC_SUBST(tm_file_list)
4908 AC_SUBST(tm_include_list)
4909 AC_SUBST(tm_defines)
4910 AC_SUBST(libgcc_tm_file_list)
4911 AC_SUBST(libgcc_tm_include_list)
4912 AC_SUBST(tm_p_file_list)
4913 AC_SUBST(tm_p_include_list)
4914 AC_SUBST(xm_file_list)
4915 AC_SUBST(xm_include_list)
4916 AC_SUBST(xm_defines)
4917 AC_SUBST(use_gcc_stdint)
4918 AC_SUBST(c_target_objs)
4919 AC_SUBST(cxx_target_objs)
4920 AC_SUBST(fortran_target_objs)
4921 AC_SUBST(target_cpu_default)
4923 AC_SUBST_FILE(language_hooks)
4926 if test x${build} = x${host} ; then
4927 if test x${host} = x${target} ; then
4928 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4930 echo "Links are now set up to build a cross-compiler" 1>&2
4931 echo " from ${host} to ${target}." 1>&2
4934 if test x${host} = x${target} ; then
4935 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4936 echo " for ${target}." 1>&2
4938 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4939 echo " from ${host} to ${target}." 1>&2
4943 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4944 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4946 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4947 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4949 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4950 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4951 if test "x${CLOOGLIBS}" != "x" ; then
4952 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4955 # Check for plugin support
4956 AC_ARG_ENABLE(plugin,
4957 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
4958 enable_plugin=$enableval,
4959 enable_plugin=yes; default_plugin=yes)
4965 if test x$build = x$host; then
4966 export_sym_check="nm${exeext} -g"
4967 elif test x$host = x$target; then
4968 export_sym_check="$gcc_cv_nm -g"
4974 if test x$build = x$host; then
4975 export_sym_check="objdump${exeext} -T"
4976 elif test x$host = x$target; then
4977 export_sym_check="$gcc_cv_objdump -T"
4984 if test x"$enable_plugin" = x"yes"; then
4986 AC_MSG_CHECKING([for exported symbols])
4987 if test "x$export_sym_check" != x; then
4988 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4989 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4990 if $export_sym_check conftest | grep foobar > /dev/null; then
4991 : # No need to use a flag
4992 AC_MSG_RESULT([yes])
4994 AC_MSG_RESULT([yes])
4995 AC_MSG_CHECKING([for -rdynamic])
4996 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
4997 if $export_sym_check conftest | grep foobar > /dev/null; then
4999 pluginlibs="-rdynamic"
5004 AC_MSG_RESULT([$plugin_rdynamic])
5007 AC_MSG_RESULT([unable to check])
5012 AC_SEARCH_LIBS([dlopen], [dl])
5013 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5014 pluginlibs="$pluginlibs -ldl"
5018 # Check that we can build shared objects with -fPIC -shared
5019 saved_LDFLAGS="$LDFLAGS"
5020 saved_CFLAGS="$CFLAGS"
5023 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5024 CFLAGS="$CFLAGS -fPIC"
5025 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5028 CFLAGS="$CFLAGS -fPIC"
5029 LDFLAGS="$LDFLAGS -fPIC -shared"
5032 AC_MSG_CHECKING([for -fPIC -shared])
5034 [extern int X;],[return X == 0;],
5035 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5036 [AC_MSG_RESULT([no]); have_pic_shared=no])
5037 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5041 LDFLAGS="$saved_LDFLAGS"
5042 CFLAGS="$saved_CFLAGS"
5044 # If plugin support had been requested but not available, fail.
5045 if test x"$enable_plugin" = x"no" ; then
5046 if test x"$default_plugin" != x"yes"; then
5048 Building GCC with plugin support requires a host that supports
5049 -fPIC, -shared, -ldl and -rdynamic.])
5054 AC_SUBST(pluginlibs)
5055 AC_SUBST(enable_plugin)
5056 if test x"$enable_plugin" = x"yes"; then
5057 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5061 AC_ARG_ENABLE(libquadmath-support,
5062 [AS_HELP_STRING([--disable-libquadmath-support],
5063 [disable libquadmath support for Fortran])],
5064 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5065 ENABLE_LIBQUADMATH_SUPPORT=yes)
5066 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5067 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5068 [Define to 1 to enable libquadmath support])
5072 # Specify what hash style to use by default.
5073 AC_ARG_WITH([linker-hash-style],
5074 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5075 [specify the linker hash style])],
5076 [case x"$withval" in
5078 LINKER_HASH_STYLE=sysv
5081 LINKER_HASH_STYLE=gnu
5084 LINKER_HASH_STYLE=both
5087 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5090 [LINKER_HASH_STYLE=''])
5091 if test x"${LINKER_HASH_STYLE}" != x; then
5092 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5093 [The linker hash style])
5096 # Configure the subdirectories
5097 # AC_CONFIG_SUBDIRS($subdirs)
5099 # Create the Makefile
5100 # and configure language subdirectories
5101 AC_CONFIG_FILES($all_outputs)
5103 AC_CONFIG_COMMANDS([default],
5105 case ${CONFIG_HEADERS} in
5106 *auto-host.h:config.in*)
5109 # Make sure all the subdirs exist.
5110 for d in $subdirs doc build common c-family
5112 test -d $d || mkdir $d
5115 [subdirs='$subdirs'])