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, 2012 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)$libstdcxx_incdir"
148 gcc_gxx_include_dir_add_sysroot=0
149 if test "${with_sysroot+set}" = set; then
150 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
151 if test "${gcc_gxx_without_sysroot}"; then
152 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
153 gcc_gxx_include_dir_add_sysroot=1
157 AC_ARG_WITH(cpp_install_dir,
158 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
159 [install the user visible C preprocessor in DIR
160 (relative to PREFIX) as well as PREFIX/bin])],
161 [if test x$withval = xyes; then
162 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
163 elif test x$withval != xno; then
164 cpp_install_dir=$withval
167 # We would like to our source tree to be readonly. However when releases or
168 # pre-releases are generated, the flex/bison generated files as well as the
169 # various formats of manuals need to be included along with the rest of the
170 # sources. Therefore we have --enable-generated-files-in-srcdir to do
173 AC_MSG_CHECKING([whether to place generated files in the source directory])
174 dnl generated-files-in-srcdir is disabled by default
175 AC_ARG_ENABLE(generated-files-in-srcdir,
176 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
177 [put copies of generated files in source dir
178 intended for creating source tarballs for users
179 without texinfo bison or flex])],
180 generated_files_in_srcdir=$enableval,
181 generated_files_in_srcdir=no)
183 AC_MSG_RESULT($generated_files_in_srcdir)
185 if test "$generated_files_in_srcdir" = "yes"; then
192 # -------------------
193 # Find default linker
194 # -------------------
198 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
199 gnu_ld_flag="$with_gnu_ld",
202 # With pre-defined ld
204 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
205 DEFAULT_LINKER="$with_ld")
206 if test x"${DEFAULT_LINKER+set}" = x"set"; then
207 if test ! -x "$DEFAULT_LINKER"; then
208 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
209 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
212 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
213 [Define to enable the use of a default linker.])
216 AC_MSG_CHECKING([whether a default linker was specified])
217 if test x"${DEFAULT_LINKER+set}" = x"set"; then
218 if test x"$gnu_ld_flag" = x"no"; then
219 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
221 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
227 # With demangler in GNU ld
228 AC_ARG_WITH(demangler-in-ld,
229 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
230 demangler_in_ld="$with_demangler_in_ld",
233 # ----------------------
234 # Find default assembler
235 # ----------------------
239 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
240 gas_flag="$with_gnu_as",
244 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
245 DEFAULT_ASSEMBLER="$with_as")
246 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
247 if test ! -x "$DEFAULT_ASSEMBLER"; then
248 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
249 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
252 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
253 [Define to enable the use of a default assembler.])
256 AC_MSG_CHECKING([whether a default assembler was specified])
257 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
258 if test x"$gas_flag" = x"no"; then
259 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
261 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
271 # If a non-executable a.out is present (e.g. created by GNU as above even if
272 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
273 # file, even when creating an executable, so an execution test fails.
274 # Remove possible default executable files to avoid this.
276 # FIXME: This really belongs into AC_PROG_CC and can be removed once
277 # Autoconf includes it.
278 rm -f a.out a.exe b.out
280 # Find the native compiler
284 ACX_PROG_GNAT([-I"$srcdir"/ada])
286 # autoconf is lame and doesn't give us any substitution variable for this.
287 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
288 NO_MINUS_C_MINUS_O=yes
290 OUTPUT_OPTION='-o $@'
292 AC_SUBST(NO_MINUS_C_MINUS_O)
293 AC_SUBST(OUTPUT_OPTION)
295 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
296 # optimizations to be activated explicitly by the toplevel.
299 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
300 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
305 # Determine PICFLAG for target gnatlib.
306 GCC_PICFLAG_FOR_TARGET
307 AC_SUBST(PICFLAG_FOR_TARGET)
309 # -------------------------
310 # Check C compiler features
311 # -------------------------
313 AC_USE_SYSTEM_EXTENSIONS
319 # sizeof(char) is 1 by definition.
320 AC_CHECK_SIZEOF(void *)
321 AC_CHECK_SIZEOF(short)
323 AC_CHECK_SIZEOF(long)
324 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
325 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
328 # ---------------------
329 # Warnings and checking
330 # ---------------------
332 # Check $CC warning features (if it's GCC).
333 # We want to use -pedantic, but we don't want warnings about
337 # * C++11 narrowing conversions in { }
338 # So, we only use -pedantic if we can disable those warnings.
340 ACX_PROG_CC_WARNING_OPTS(
341 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual])), [loose_warn])
342 ACX_PROG_CC_WARNING_OPTS(
343 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
345 ACX_PROG_CC_WARNING_OPTS(
346 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
347 ACX_PROG_CC_WARNING_OPTS(
348 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
349 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
350 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
351 [-Wno-overlength-strings])), [strict_warn])
352 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
354 # The above macros do nothing if the compiler is not GCC. However, the
355 # Makefile has more goo to add other flags, so these variables are used
356 # to enable warnings only for GCC.
359 if test "x$GCC" = "xyes"; then
360 warn_cflags='$(GCC_WARN_CFLAGS)'
361 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
363 AC_SUBST(warn_cflags)
364 AC_SUBST(warn_cxxflags)
366 # Disable exceptions and RTTI if building with g++
367 ACX_PROG_CC_WARNING_OPTS(
368 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
371 # Enable expensive internal checks
373 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
377 AC_ARG_ENABLE(checking,
378 [AS_HELP_STRING([[--enable-checking[=LIST]]],
379 [enable expensive run-time checks. With LIST,
380 enable only specific categories of checks.
381 Categories are: yes,no,all,none,release.
382 Flags are: assert,df,fold,gc,gcac,gimple,misc,
383 rtlflag,rtl,runtime,tree,valgrind,types])],
384 [ac_checking_flags="${enableval}"],[
385 # Determine the default checks.
386 if test x$is_release = x ; then
387 ac_checking_flags=yes
389 ac_checking_flags=release
391 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
392 for check in release $ac_checking_flags
395 # these set all the flags to specific states
396 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
397 ac_fold_checking= ; ac_gc_checking=1 ;
398 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
399 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
400 ac_tree_checking=1 ; ac_valgrind_checking= ;
401 ac_types_checking=1 ;;
402 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
403 ac_fold_checking= ; ac_gc_checking= ;
404 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
405 ac_rtlflag_checking= ; ac_runtime_checking= ;
406 ac_tree_checking= ; ac_valgrind_checking= ;
407 ac_types_checking= ;;
408 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
409 ac_fold_checking=1 ; ac_gc_checking=1 ;
410 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
411 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
412 ac_tree_checking=1 ; ac_valgrind_checking= ;
413 ac_types_checking=1 ;;
414 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
415 ac_fold_checking= ; ac_gc_checking= ;
416 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
417 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
418 ac_tree_checking= ; ac_valgrind_checking= ;
419 ac_types_checking= ;;
420 # these enable particular checks
421 assert) ac_assert_checking=1 ;;
422 df) ac_df_checking=1 ;;
423 fold) ac_fold_checking=1 ;;
424 gc) ac_gc_checking=1 ;;
425 gcac) ac_gc_always_collect=1 ;;
426 gimple) ac_gimple_checking=1 ;;
427 misc) ac_checking=1 ;;
428 rtl) ac_rtl_checking=1 ;;
429 rtlflag) ac_rtlflag_checking=1 ;;
430 runtime) ac_runtime_checking=1 ;;
431 tree) ac_tree_checking=1 ;;
432 types) ac_types_checking=1 ;;
433 valgrind) ac_valgrind_checking=1 ;;
434 *) AC_MSG_ERROR(unknown check category $check) ;;
440 if test x$ac_checking != x ; then
441 AC_DEFINE(ENABLE_CHECKING, 1,
442 [Define if you want more run-time sanity checks. This one gets a grab
443 bag of miscellaneous but relatively cheap checks.])
444 nocommon_flag=-fno-common
446 AC_SUBST(nocommon_flag)
447 if test x$ac_df_checking != x ; then
448 AC_DEFINE(ENABLE_DF_CHECKING, 1,
449 [Define if you want more run-time sanity checks for dataflow.])
451 if test x$ac_assert_checking != x ; then
452 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
453 [Define if you want assertions enabled. This is a cheap check.])
455 if test x$ac_gimple_checking != x ; then
456 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
457 [Define if you want operations on GIMPLE (the basic data structure of
458 the high-level optimizers) to be checked for dynamic type safety at
459 runtime. This is moderately expensive.])
461 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
462 if test x$ac_runtime_checking != x ; then
463 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
464 [Define if you want runtime assertions enabled. This is a cheap check.])
466 if test x$ac_tree_checking != x ; then
467 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
468 [Define if you want all operations on trees (the basic data
469 structure of the front ends) to be checked for dynamic type safety
470 at runtime. This is moderately expensive. The tree browser debugging
471 routines will also be enabled by this option.
473 TREEBROWSER=tree-browser.o
475 if test x$ac_types_checking != x ; then
476 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
477 [Define if you want all gimple types to be verified after gimplifiation.
481 AC_SUBST(TREEBROWSER)
482 if test x$ac_rtl_checking != x ; then
483 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
484 [Define if you want all operations on RTL (the basic data structure
485 of the optimizer and back end) to be checked for dynamic type safety
486 at runtime. This is quite expensive.])
488 if test x$ac_rtlflag_checking != x ; then
489 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
490 [Define if you want RTL flag accesses to be checked against the RTL
491 codes that are supported for each access macro. This is relatively
494 if test x$ac_gc_checking != x ; then
495 AC_DEFINE(ENABLE_GC_CHECKING, 1,
496 [Define if you want the garbage collector to do object poisoning and
497 other memory allocation checks. This is quite expensive.])
499 if test x$ac_gc_always_collect != x ; then
500 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
501 [Define if you want the garbage collector to operate in maximally
502 paranoid mode, validating the entire heap and collecting garbage at
503 every opportunity. This is extremely expensive.])
505 if test x$ac_fold_checking != x ; then
506 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
507 [Define if you want fold checked that it never destructs its argument.
508 This is quite expensive.])
510 valgrind_path_defines=
513 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
514 dnl # an if statement. This was the source of very frustrating bugs
515 dnl # in converting to autoconf 2.5x!
516 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
518 if test x$ac_valgrind_checking != x ; then
519 # It is certainly possible that there's valgrind but no valgrind.h.
520 # GCC relies on making annotations so we must have both.
521 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
522 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
523 [[#include <valgrind/memcheck.h>
524 #ifndef VALGRIND_DISCARD
525 #error VALGRIND_DISCARD not defined
527 [gcc_cv_header_valgrind_memcheck_h=yes],
528 [gcc_cv_header_valgrind_memcheck_h=no])
529 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
530 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
531 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
532 [[#include <memcheck.h>
533 #ifndef VALGRIND_DISCARD
534 #error VALGRIND_DISCARD not defined
536 [gcc_cv_header_memcheck_h=yes],
537 [gcc_cv_header_memcheck_h=no])
538 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
539 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
540 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
541 if test "x$valgrind_path" = "x" \
542 || (test $have_valgrind_h = no \
543 && test $gcc_cv_header_memcheck_h = no \
544 && test $gcc_cv_header_valgrind_memcheck_h = no); then
545 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
547 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
548 valgrind_command="$valgrind_path -q"
549 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
550 [Define if you want to run subprograms and generated programs
551 through valgrind (a memory checker). This is extremely expensive.])
552 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
553 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
554 [Define if valgrind's valgrind/memcheck.h header is installed.])
556 if test $gcc_cv_header_memcheck_h = yes; then
557 AC_DEFINE(HAVE_MEMCHECK_H, 1,
558 [Define if valgrind's memcheck.h header is installed.])
561 AC_SUBST(valgrind_path_defines)
562 AC_SUBST(valgrind_command)
564 # Enable code coverage collection
565 AC_ARG_ENABLE(coverage,
566 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
567 [enable compiler's code coverage collection.
568 Use to measure compiler performance and locate
569 unused parts of the compiler. With LEVEL, specify
570 optimization. Values are opt, noopt,
572 [case "${enableval}" in
574 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
577 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
580 # a.k.a. --disable-coverage
584 AC_MSG_ERROR(unknown coverage setting $enableval)
588 AC_SUBST(coverage_flags)
590 AC_ARG_ENABLE(gather-detailed-mem-stats,
591 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
592 [enable detailed memory allocation stats gathering])], [],
593 [enable_gather_detailed_mem_stats=no])
594 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
595 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
596 [Define to enable detailed memory allocation stats gathering.])
598 # -------------------------------
599 # Miscenalleous configure options
600 # -------------------------------
604 [AS_HELP_STRING([--with-stabs],
605 [arrange to use stabs instead of host debug format])],
609 # Determine whether or not multilibs are enabled.
610 AC_ARG_ENABLE(multilib,
611 [AS_HELP_STRING([--enable-multilib],
612 [enable library support for multiple ABIs])],
613 [], [enable_multilib=yes])
614 AC_SUBST(enable_multilib)
616 # Enable __cxa_atexit for C++.
617 AC_ARG_ENABLE(__cxa_atexit,
618 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
621 # Enable C extension for decimal float if target supports it.
622 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
624 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
625 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
626 [Define to 1 to enable decimal float extension to C.])
628 # Use default_decimal_float for dependency.
629 enable_decimal_float=$default_decimal_float
631 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
632 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
633 [Define to 1 to specify that we are using the BID decimal floating
634 point format instead of DPD])
636 # Enable C extension for fixed-point arithmetic.
637 AC_ARG_ENABLE(fixed-point,
638 [AS_HELP_STRING([--enable-fixed-point],
639 [enable fixed-point arithmetic extension to C])],
644 enable_fixed_point=yes
648 enable_fixed_point=yes
651 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
652 enable_fixed_point=no
656 AC_SUBST(enable_fixed_point)
658 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
659 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
660 [Define to 1 to enable fixed-point arithmetic extension to C.])
663 # Pass with no value to take the default
664 # Pass with a value to specify a thread package
665 AC_ARG_ENABLE(threads,
666 [AS_HELP_STRING([[--enable-threads[=LIB]]],
667 [enable thread usage for target GCC,
668 using LIB thread package])],,
672 [AS_HELP_STRING([--enable-tls],
673 [enable or disable generation of tls code
674 overriding the assembler check for tls support])],
678 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
679 Valid choices are 'yes' and 'no'.]) ;;
683 AC_ARG_ENABLE(objc-gc,
684 [AS_HELP_STRING([--enable-objc-gc],
685 [enable the use of Boehm's garbage collector with
686 the GNU Objective-C runtime])],
687 if test x$enable_objc_gc = xno; then
695 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
696 dwarf2="$with_dwarf2",
699 AC_ARG_ENABLE(shared,
700 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
702 case $enable_shared in
706 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
707 for pkg in $enableval; do
708 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
715 ], [enable_shared=yes])
716 AC_SUBST(enable_shared)
718 AC_ARG_WITH([native-system-header-dir],
719 [ --with-native-system-header-dir=dir
720 use dir as the directory to look for standard
721 system header files in. Defaults to /usr/include.],
723 case ${with_native_system_header_dir} in
724 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
725 /* | [[A-Za-z]]:[[\\/]]*) ;;
726 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
728 configured_native_system_header_dir="${withval}"
729 ], [configured_native_system_header_dir=])
731 AC_ARG_WITH(build-sysroot,
732 [AS_HELP_STRING([--with-build-sysroot=sysroot],
733 [use sysroot as the system root during the build])],
734 [if test x"$withval" != x ; then
735 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
737 [SYSROOT_CFLAGS_FOR_TARGET=])
738 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
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
752 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
753 [search for usr/lib, usr/include, et al, within DIR])],
755 case ${with_sysroot} in
756 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
757 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
760 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
761 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
763 case ${TARGET_SYSTEM_ROOT} in
764 "${test_prefix}"|"${test_prefix}/"*|\
765 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
766 '${prefix}'|'${prefix}/'*|\
767 '${exec_prefix}'|'${exec_prefix}/'*)
768 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
769 TARGET_SYSTEM_ROOT_DEFINE="$t"
774 TARGET_SYSTEM_ROOT_DEFINE=
775 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
777 AC_SUBST(TARGET_SYSTEM_ROOT)
778 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
779 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
782 [AS_HELP_STRING([--with-specs=SPECS],
783 [add SPECS to driver command-line processing])],
784 [CONFIGURE_SPECS=$withval],
787 AC_SUBST(CONFIGURE_SPECS)
789 ACX_PKGVERSION([GCC])
790 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
792 # Sanity check enable_languages in case someone does not run the toplevel
793 # configure # script.
794 AC_ARG_ENABLE(languages,
795 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
796 [case ,${enable_languages}, in
798 # go safe -- we cannot be much sure without the toplevel
800 # analysis of which target libs are present and usable
804 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
809 enable_languages=c,${enable_languages}
812 [enable_languages=c])
814 AC_ARG_WITH(multilib-list,
815 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
817 with_multilib_list=default)
819 # -------------------------
820 # Checks for other programs
821 # -------------------------
825 # Find some useful tools
827 # We need awk to create options.c and options.h.
828 # Bail out if it's missing.
830 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
837 AC_SUBST(ranlib_flags)
841 # See if cmp has --ignore-initial.
842 gcc_AC_PROG_CMP_IGNORE_INITIAL
844 # See if we have the mktemp command.
845 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
847 # See if makeinfo has been installed and is modern enough
848 # that we can use it.
849 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
850 [GNU texinfo.* \([0-9][0-9.]*\)],
851 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
852 if test $gcc_cv_prog_makeinfo_modern = no; then
854 *** Makeinfo is missing or too old.
855 *** Info documentation will not be built.])
862 # Is pod2man recent enough to regenerate manpages?
863 AC_MSG_CHECKING([for recent Pod::Man])
864 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
866 GENERATED_MANPAGES=generated-manpages
871 AC_SUBST(GENERATED_MANPAGES)
873 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
876 dnl Don't use AC_PROG_LEX; we insist on flex.
877 dnl LEXLIB is not useful in gcc.
878 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
881 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
883 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
884 # check for build == host before using them.
887 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
888 && test -d ../binutils ; then
889 NM='${objdir}/../binutils/nm-new'
891 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
895 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
896 && test -d ../binutils ; then
897 AR='${objdir}/../binutils/ar'
899 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
903 # --------------------
904 # Checks for C headers
905 # --------------------
907 # Need to reject headers which give warnings, so that the -Werror bootstrap
908 # works later. *sigh* This needs to come before all header checks.
915 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
916 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
917 sys/resource.h sys/param.h sys/times.h sys/stat.h \
918 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h libintl.h)
920 # Check for thread headers.
921 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
922 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
924 # These tests can't be done till we know if we have limits.h.
928 # ----------------------
929 # Checks for C++ headers
930 # ----------------------
932 dnl Autoconf will give an error in the configure script if there is no
933 dnl C++ preprocessor. Hack to prevent that.
934 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
936 m4_popdef([AC_MSG_ERROR])[]dnl
940 AC_CHECK_HEADERS(unordered_map)
941 AC_CHECK_HEADERS(tr1/unordered_map)
942 AC_CHECK_HEADERS(ext/hash_map)
951 # These libraries may be used by collect2.
952 # We may need a special search path to get them linked.
953 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
955 for libs in '' -lld -lmld \
956 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
957 '-L/usr/lib/cmplrs/cc3.11 -lmld'
960 AC_TRY_LINK_FUNC(ldopen,
961 [gcc_cv_collect2_libs="$libs"; break])
964 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
965 case $gcc_cv_collect2_libs in
967 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
969 AC_SUBST(COLLECT2_LIBS)
971 # When building Ada code on Alpha, we need exc_resume which is usually in
972 # -lexc. So test for it.
975 AC_SEARCH_LIBS(exc_resume, exc)
978 AC_SUBST(GNAT_LIBEXC)
980 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
983 AC_SEARCH_LIBS(kstat_open, kstat)
984 EXTRA_GCC_LIBS="$LIBS"
986 AC_SUBST(EXTRA_GCC_LIBS)
988 # Some systems put ldexp and frexp in libm instead of libc; assume
989 # they're both in the same place. jcf-dump needs them.
992 AC_SEARCH_LIBS(ldexp, m)
997 # Use <inttypes.h> only if it exists,
998 # doesn't clash with <sys/types.h>, and declares intmax_t.
999 AC_MSG_CHECKING(for inttypes.h)
1000 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1001 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1002 [[#include <sys/types.h>
1003 #include <inttypes.h>]],
1004 [[intmax_t i = -1;]])],
1005 [gcc_cv_header_inttypes_h=yes],
1006 [gcc_cv_header_inttypes_h=no])])
1007 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1008 if test $gcc_cv_header_inttypes_h = yes; then
1009 AC_DEFINE(HAVE_INTTYPES_H, 1,
1010 [Define if you have a working <inttypes.h> header file.])
1013 dnl Disabled until we have a complete test for buggy enum bitfields.
1014 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1016 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1017 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1018 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1019 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1020 putchar_unlocked putc_unlocked)
1021 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1022 sysconf strsignal getrusage nl_langinfo \
1023 gettimeofday mbstowcs wcswidth mmap setlocale \
1024 gcc_UNLOCKED_FUNCS madvise)
1026 if test x$ac_cv_func_mbstowcs = xyes; then
1027 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1028 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1034 [gcc_cv_func_mbstowcs_works=yes],
1035 [gcc_cv_func_mbstowcs_works=no],
1036 [gcc_cv_func_mbstowcs_works=yes])])
1037 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1038 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1039 [Define this macro if mbstowcs does not crash when its
1040 first argument is NULL.])
1044 AC_CHECK_TYPE(ssize_t, int)
1045 AC_CHECK_TYPE(caddr_t, char *)
1047 GCC_AC_FUNC_MMAP_BLACKLIST
1051 # Under VMS, vfork works very differently than on Unix. The standard test
1052 # won't work, and it isn't easily adaptable. It makes more sense to
1054 ac_cv_func_vfork_works=yes
1059 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1060 # iconv() prototype.
1065 # Until we have in-tree GNU iconv:
1067 AC_SUBST(LIBICONV_DEP)
1073 # We will need to find libiberty.h and ansidecl.h
1074 saved_CFLAGS="$CFLAGS"
1075 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1076 saved_CXXFLAGS="$CXXFLAGS"
1077 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include"
1078 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1079 strsignal strstr stpcpy strverscmp \
1080 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1081 free basename getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1082 #include "ansidecl.h"
1083 #include "system.h"])
1085 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1086 #include "ansidecl.h"
1088 #ifdef HAVE_SYS_RESOURCE_H
1089 #include <sys/resource.h>
1093 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1094 #include "ansidecl.h"
1096 #ifdef HAVE_SYS_RESOURCE_H
1097 #include <sys/resource.h>
1099 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1100 [Define to `long' if <sys/resource.h> doesn't define.])])
1102 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1103 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1104 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1105 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1106 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1107 #include "ansidecl.h"
1116 gcc_AC_CHECK_DECLS(times, , ,[
1117 #include "ansidecl.h"
1119 #ifdef HAVE_SYS_TIMES_H
1120 #include <sys/times.h>
1124 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1125 #include "ansidecl.h"
1130 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1133 gcc_AC_CHECK_DECLS(madvise, , ,[
1134 #include "ansidecl.h"
1139 # More time-related stuff.
1140 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1141 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1142 #include "ansidecl.h"
1144 #ifdef HAVE_SYS_TIMES_H
1145 #include <sys/times.h>
1147 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1148 if test $ac_cv_struct_tms = yes; then
1149 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1150 [Define if <sys/times.h> defines struct tms.])
1153 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1154 # revisit after autoconf 2.50.
1155 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1156 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1157 #include "ansidecl.h"
1159 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1160 if test $gcc_cv_type_clock_t = yes; then
1161 AC_DEFINE(HAVE_CLOCK_T, 1,
1162 [Define if <time.h> defines clock_t.])
1165 # Check if F_SETLKW is supported by fcntl.
1166 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1167 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1168 #include <fcntl.h>]], [[
1174 return fcntl (1, F_SETLKW, &fl);]])],
1175 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1176 if test $ac_cv_f_setlkw = yes; then
1177 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1178 [Define if F_SETLKW supported by fcntl.])
1181 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1182 CFLAGS="$saved_CFLAGS"
1183 CXXFLAGS="$saved_CXXFLAGS"
1185 # mkdir takes a single argument on some systems.
1186 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1194 # With Setjmp/Longjmp based exception handling.
1195 AC_ARG_ENABLE(sjlj-exceptions,
1196 [AS_HELP_STRING([--enable-sjlj-exceptions],
1197 [arrange to use setjmp/longjmp exception handling])],
1200 if test $enableval != yes; then
1201 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1206 force_sjlj_exceptions=yes],
1209 force_sjlj_exceptions=yes
1213 force_sjlj_exceptions=no
1216 if test $force_sjlj_exceptions = yes; then
1217 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1218 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1219 [Define 0/1 to force the choice for exception handling model.])
1222 # --------------------------------------------------------
1223 # Build, host, and target specific configuration fragments
1224 # --------------------------------------------------------
1226 # Collect build-machine-specific information.
1227 . ${srcdir}/config.build
1229 # Collect host-machine-specific information.
1230 . ${srcdir}/config.host
1234 # Collect target-machine-specific information.
1235 . ${srcdir}/config.gcc
1237 extra_objs="${host_extra_objs} ${extra_objs}"
1238 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1240 # Default the target-machine variables that were not explicitly set.
1241 if test x"$tm_file" = x
1242 then tm_file=$cpu_type/$cpu_type.h; fi
1244 if test x"$extra_headers" = x
1245 then extra_headers=; fi
1247 if test x$md_file = x
1248 then md_file=$cpu_type/$cpu_type.md; fi
1250 if test x$out_file = x
1251 then out_file=$cpu_type/$cpu_type.c; fi
1253 if test x"$tmake_file" = x
1254 then tmake_file=$cpu_type/t-$cpu_type
1257 # Support --enable-initfini-array.
1258 if test x$enable_initfini_array != xno; then
1259 tm_file="${tm_file} initfini-array.h"
1262 if test x"$dwarf2" = xyes
1263 then tm_file="$tm_file tm-dwarf2.h"
1266 # Say what files are being used for the output code and MD file.
1267 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1268 echo "Using \`$srcdir/config/$md_file' as machine description file."
1270 # If any of the xm_file variables contain nonexistent files, warn
1271 # about them and drop them.
1274 for x in $build_xm_file; do
1275 if test -f $srcdir/config/$x
1277 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1283 for x in $host_xm_file; do
1284 if test -f $srcdir/config/$x
1286 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1292 for x in $xm_file; do
1293 if test -f $srcdir/config/$x
1295 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1301 for f in $tm_file; do
1304 if test $count = ax; then
1305 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1307 echo "Using the following target machine macro files:"
1308 for f in $tm_file; do
1309 echo " $srcdir/config/$f"
1313 if test x$need_64bit_hwint = xyes; then
1314 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1315 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1318 if test x$use_long_long_for_widest_fast_int = xyes; then
1319 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1320 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1321 efficiently supported by the host hardware.])
1324 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1325 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1327 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1328 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1331 for f in $host_xm_file; do
1334 if test $count = a; then
1336 elif test $count = ax; then
1337 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1339 echo "Using the following host machine macro files:"
1340 for f in $host_xm_file; do
1341 echo " $srcdir/config/$f"
1344 echo "Using ${out_host_hook_obj} for host machine hooks."
1346 if test "$host_xm_file" != "$build_xm_file"; then
1348 for f in $build_xm_file; do
1351 if test $count = a; then
1353 elif test $count = ax; then
1354 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1356 echo "Using the following build machine macro files:"
1357 for f in $build_xm_file; do
1358 echo " $srcdir/config/$f"
1363 if test -n "$configured_native_system_header_dir"; then
1364 native_system_header_dir=$configured_native_system_header_dir
1366 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1367 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1371 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1372 gcc_cv_mcontext_underscores,
1374 #include <sys/cdefs.h>
1375 #include <sys/signal.h>
1376 #include <ucontext.h>
1377 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1379 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1380 if test $gcc_cv_mcontext_underscores = yes; then
1381 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1382 [mcontext_t fields start with __])
1391 # Check if a valid thread package
1392 case ${enable_threads} in
1395 target_thread_file='single'
1399 target_thread_file='single'
1401 aix | dce | lynx | mipssde | posix | rtems | \
1402 single | tpf | vxworks | win32)
1403 target_thread_file=${enable_threads}
1406 echo "${enable_threads} is an unknown thread package" 1>&2
1411 if test x${thread_file} = x; then
1412 # No thread file set by target-specific clauses in config.gcc,
1413 # so use file chosen by default logic above
1414 thread_file=${target_thread_file}
1422 if test x$enable___cxa_atexit = xyes || \
1423 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1424 if test x$host = x$target; then
1426 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1427 # keyed to flag_use_cxa_atexit
1432 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1433 [echo "__cxa_atexit can't be enabled on this target"])
1437 # We can't check for __cxa_atexit when building a cross, so assume
1441 if test x$use_cxa_atexit = xyes; then
1442 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1443 [Define if you want to use __cxa_atexit, rather than atexit, to
1444 register C++ destructors for local statics and global objects.
1445 This is essential for fully standards-compliant handling of
1446 destructors, but requires __cxa_atexit in libc.])
1450 # Look for a file containing extra machine modes.
1451 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1452 extra_modes_file='$(srcdir)'/config/${extra_modes}
1453 AC_SUBST(extra_modes_file)
1454 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1455 [Define to the name of a file containing a list of extra machine modes
1456 for this architecture.])
1459 # Convert extra_options into a form suitable for Makefile use.
1462 for f in $extra_options; do
1463 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1464 all_opt_files="$all_opt_files $srcdir/config/$f"
1466 AC_SUBST(extra_opt_files)
1468 # auto-host.h is the file containing items generated by autoconf and is
1469 # the first file included by config.h.
1470 # If host=build, it is correct to have bconfig include auto-host.h
1471 # as well. If host!=build, we are in error and need to do more
1472 # work to find out the build config parameters.
1473 if test x$host = x$build
1475 build_auto=auto-host.h
1477 # We create a subdir, then run autoconf in the subdir.
1478 # To prevent recursion we set host and build for the new
1479 # invocation of configure to the build for this invocation
1486 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1487 *) realsrcdir=../${srcdir};;
1489 saved_CFLAGS="${CFLAGS}"
1490 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1491 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1492 ${realsrcdir}/configure \
1493 --enable-languages=${enable_languages-all} \
1494 --target=$target_alias --host=$build_alias --build=$build_alias
1495 CFLAGS="${saved_CFLAGS}"
1497 # We just finished tests for the build machine, so rename
1498 # the file auto-build.h in the gcc directory.
1499 mv auto-host.h ../auto-build.h
1502 build_auto=auto-build.h
1504 AC_SUBST(build_subdir)
1506 tm_file="${tm_file} defaults.h"
1507 tm_p_file="${tm_p_file} tm-preds.h"
1508 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1509 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1510 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1511 # put this back in temporarily.
1512 xm_file="auto-host.h ansidecl.h ${xm_file}"
1519 # Compile in configure arguments.
1520 if test -f configargs.h ; then
1521 # Being re-configured.
1522 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1523 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1525 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1528 # Double all backslashes and backslash all quotes to turn
1529 # gcc_config_arguments into a C string.
1530 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1531 $gcc_config_arguments
1533 gcc_config_arguments_str=`cat conftest.out`
1536 cat > configargs.h <<EOF
1537 /* Generated automatically. */
1538 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1539 static const char thread_model[] = "$thread_file";
1541 static const struct {
1542 const char *name, *value;
1543 } configure_default_options[] = $configure_default_options;
1548 gcc_BASEVER=`cat $srcdir/BASE-VER`
1549 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1550 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1551 if test -f $srcdir/REVISION ; then
1552 gcc_REVISION=`cat $srcdir/REVISION`
1556 cat > plugin-version.h <<EOF
1557 #include "configargs.h"
1559 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1560 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1561 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1562 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1564 static char basever[] = "$gcc_BASEVER";
1565 static char datestamp[] = "$gcc_DATESTAMP";
1566 static char devphase[] = "$gcc_DEVPHASE";
1567 static char revision[] = "$gcc_REVISION";
1569 /* FIXME plugins: We should make the version information more precise.
1570 One way to do is to add a checksum. */
1572 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1574 configuration_arguments};
1578 # Internationalization
1579 ZW_GNU_GETTEXT_SISTER_DIR
1581 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1582 # -liconv on the link line twice.
1583 case "$LIBINTL" in *$LIBICONV*)
1587 AC_ARG_ENABLE(secureplt,
1588 [AS_HELP_STRING([--enable-secureplt],
1589 [enable -msecure-plt by default for PowerPC])],
1592 AC_ARG_ENABLE(leading-mingw64-underscores,
1593 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1594 [enable leading underscores on 64 bit mingw targets]),
1596 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1597 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1598 [Define if we should use leading underscore on 64 bit mingw targets])])
1601 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1604 AC_ARG_ENABLE(frame-pointer,
1605 [AS_HELP_STRING([--enable-frame-pointer],
1606 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1609 linux* | darwin[[8912]]*)
1610 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1612 enable_frame_pointer=no
1615 enable_frame_pointer=yes
1620 # Windows32 Registry support for specifying GCC installation paths.
1621 AC_ARG_ENABLE(win32-registry,
1622 [AS_HELP_STRING([--disable-win32-registry],
1623 [disable lookup of installation paths in the
1624 Registry on Windows hosts])
1625 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1626 AS_HELP_STRING([--enable-win32-registry=KEY],
1627 [use KEY instead of GCC version as the last portion
1628 of the registry key])],,)
1631 win32 | pe | cygwin* | mingw32* | uwin*)
1632 if test "x$enable_win32_registry" != xno; then
1633 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1636 if test "x$enable_win32_registry" != xno; then
1637 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1638 [Define to 1 if installation paths should be looked up in the Windows
1639 Registry. Ignored on non-Windows hosts.])
1641 if test "x$enable_win32_registry" != xyes \
1642 && test "x$enable_win32_registry" != x; then
1643 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1644 [Define to be the last component of the Windows registry key under which
1645 to look for installation paths. The full key used will be
1646 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1647 The default is the GCC version number.])
1653 # Get an absolute path to the GCC top-level source directory
1654 holddir=`${PWDCMD-pwd}`
1656 topdir=`${PWDCMD-pwd}`
1659 # Conditionalize the makefile for this host machine.
1661 for f in ${host_xmake_file}
1663 if test -f ${srcdir}/config/$f
1665 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1669 # Conditionalize the makefile for this target machine.
1671 for f in ${tmake_file}
1673 if test -f ${srcdir}/config/$f
1675 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1678 tmake_file="${tmake_file_}"
1680 out_object_file=`basename $out_file .c`.o
1681 common_out_object_file=`basename $common_out_file .c`.o
1683 tm_file_list="options.h"
1684 tm_include_list="options.h insn-constants.h"
1685 for f in $tm_file; do
1688 f=`echo $f | sed 's/^..//'`
1689 tm_file_list="${tm_file_list} $f"
1690 tm_include_list="${tm_include_list} $f"
1693 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1694 tm_include_list="${tm_include_list} $f"
1697 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1698 tm_include_list="${tm_include_list} config/$f"
1705 for f in $tm_p_file; do
1708 tm_p_file_list="${tm_p_file_list} $f"
1709 tm_p_include_list="${tm_p_include_list} $f"
1712 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1713 tm_p_include_list="${tm_p_include_list} config/$f"
1719 for f in $xm_file; do
1722 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1723 xm_include_list="${xm_include_list} $f"
1726 xm_file_list="${xm_file_list} $f"
1727 xm_include_list="${xm_include_list} $f"
1730 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1731 xm_include_list="${xm_include_list} config/$f"
1737 host_xm_include_list=
1738 for f in $host_xm_file; do
1741 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1742 host_xm_include_list="${host_xm_include_list} $f"
1745 host_xm_file_list="${host_xm_file_list} $f"
1746 host_xm_include_list="${host_xm_include_list} $f"
1749 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1750 host_xm_include_list="${host_xm_include_list} config/$f"
1756 for f in $build_xm_file; do
1759 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1760 build_xm_include_list="${build_xm_include_list} $f"
1762 auto-build.h | auto-host.h )
1763 build_xm_file_list="${build_xm_file_list} $f"
1764 build_xm_include_list="${build_xm_include_list} $f"
1767 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1768 build_xm_include_list="${build_xm_include_list} config/$f"
1773 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1774 # cross-compiler which does not use the native headers and libraries.
1775 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1776 CROSS= AC_SUBST(CROSS)
1777 ALL=all.internal AC_SUBST(ALL)
1778 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1780 if test "x$with_build_sysroot" != x; then
1781 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1783 # This value is used, even on a native system, because
1784 # CROSS_SYSTEM_HEADER_DIR is just
1785 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1786 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1789 if test x$host != x$target
1791 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1793 SYSTEM_HEADER_DIR=$build_system_header_dir
1794 case "$host","$target" in
1795 # Darwin crosses can use the host system's libraries and headers,
1796 # because of the fat library support. Of course, it must be the
1797 # same version of Darwin on both sides. Allow the user to
1798 # just say --target=foo-darwin without a version number to mean
1799 # "the version on this system".
1800 *-*-darwin*,*-*-darwin*)
1801 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1802 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1803 if test $hostos = $targetos -o $targetos = darwin ; then
1805 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1810 i?86-*-*,x86_64-*-* \
1811 | powerpc*-*-*,powerpc64*-*-*)
1812 CROSS="$CROSS -DNATIVE_CROSS" ;;
1817 if test "x$with_headers" = x; then
1824 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1825 SYSTEM_HEADER_DIR=$build_system_header_dir
1828 # If this is a cross-compiler that does not
1829 # have its own set of headers then define
1832 # If this is using newlib, without having the headers available now,
1833 # then define inhibit_libc in LIBGCC2_CFLAGS.
1834 # This prevents libgcc2 from containing any code which requires libc
1836 : ${inhibit_libc=false}
1837 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1838 test x$with_newlib = xyes ; } &&
1839 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1842 AC_SUBST(inhibit_libc)
1844 # When building gcc with a cross-compiler, we need to adjust things so
1845 # that the generator programs are still built with the native compiler.
1846 # Also, we cannot run fixincludes.
1848 # These are the normal (build=host) settings:
1849 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1850 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
1851 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1852 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
1853 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1854 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1856 # And these apply if build != host, or we are generating coverage data
1857 if test x$build != x$host || test "x$coverage_flags" != x
1859 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1860 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1863 # Expand extra_headers to include complete path.
1864 # This substitutes for lots of t-* files.
1866 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1867 for file in ${extra_headers} ; do
1868 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1871 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1872 if test x"$use_gcc_tgmath" = xyes
1873 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1876 # Define collect2 in Makefile.
1877 case $host_can_use_collect2 in
1879 *) collect2='collect2$(exeext)' ;;
1881 AC_SUBST([collect2])
1883 # Add a definition of USE_COLLECT2 if system wants one.
1884 case $use_collect2 in
1885 no) use_collect2= ;;
1888 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1889 xm_defines="${xm_defines} USE_COLLECT2"
1890 case $host_can_use_collect2 in
1892 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1898 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1899 [Define to the name of the LTO plugin DSO that must be
1900 passed to the linker's -plugin=LIB option.])
1902 # ---------------------------
1903 # Assembler & linker features
1904 # ---------------------------
1906 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1907 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1908 # However when ld-new is first executed from the build tree, libtool will
1909 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1910 # to the build tree. While doing this we need to use the previous-stage
1911 # linker, or we have an infinite loop. The presence of a shell script as
1912 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1913 # the gcc/collect-ld script. So we need to know how libtool works, or
1914 # exec-tool will fail.
1916 m4_defun([_LT_CONFIG_COMMANDS], [])
1919 AC_SUBST(enable_fast_install)
1921 # Identify the assembler which will work hand-in-glove with the newly
1922 # built GCC, so that we can examine its features. This is the assembler
1923 # which will be driven by the driver program.
1925 # If build != host, and we aren't building gas in-tree, we identify a
1926 # build->target assembler and hope that it will have the same features
1927 # as the host->target assembler we'll be using.
1928 gcc_cv_gas_major_version=
1929 gcc_cv_gas_minor_version=
1930 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1932 m4_pattern_allow([AS_FOR_TARGET])dnl
1933 AS_VAR_SET_IF(gcc_cv_as,, [
1934 if test -x "$DEFAULT_ASSEMBLER"; then
1935 gcc_cv_as="$DEFAULT_ASSEMBLER"
1936 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1937 && test -f ../gas/Makefile \
1938 && test x$build = x$host; then
1939 gcc_cv_as=../gas/as-new$build_exeext
1940 elif test -x as$build_exeext; then
1941 # Build using assembler in the current directory.
1942 gcc_cv_as=./as$build_exeext
1943 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1944 gcc_cv_as="$AS_FOR_TARGET"
1946 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1949 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1950 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1951 case "$ORIGINAL_AS_FOR_TARGET" in
1952 ./as | ./as$build_exeext) ;;
1953 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1956 AC_MSG_CHECKING(what assembler to use)
1957 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1958 # Single tree build which includes gas. We want to prefer it
1959 # over whatever linker top-level may have detected, since
1960 # we'll use what we're building after installation anyway.
1961 AC_MSG_RESULT(newly built gas)
1963 _gcc_COMPUTE_GAS_VERSION
1964 in_tree_gas_is_elf=no
1965 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1966 || (grep 'obj_format = multi' ../gas/Makefile \
1967 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1969 in_tree_gas_is_elf=yes
1972 AC_MSG_RESULT($gcc_cv_as)
1976 # Identify the linker which will work hand-in-glove with the newly
1977 # built GCC, so that we can examine its features. This is the linker
1978 # which will be driven by the driver program.
1980 # If build != host, and we aren't building gas in-tree, we identify a
1981 # build->target linker and hope that it will have the same features
1982 # as the host->target linker we'll be using.
1983 gcc_cv_gld_major_version=
1984 gcc_cv_gld_minor_version=
1985 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1986 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1988 AS_VAR_SET_IF(gcc_cv_ld,, [
1989 if test -x "$DEFAULT_LINKER"; then
1990 gcc_cv_ld="$DEFAULT_LINKER"
1991 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1992 && test -f ../ld/Makefile \
1993 && test x$build = x$host; then
1994 gcc_cv_ld=../ld/ld-new$build_exeext
1995 elif test -x collect-ld$build_exeext; then
1996 # Build using linker in the current directory.
1997 gcc_cv_ld=./collect-ld$build_exeext
1998 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
1999 gcc_cv_ld="$LD_FOR_TARGET"
2001 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2004 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2005 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2006 # if the PLUGIN_LD is set ld-new, just have it as ld
2007 # as that is the installed named.
2008 if test x$PLUGIN_LD_SUFFIX == xld-new \
2009 || test x$PLUGIN_LD_SUFFIX == xcollect-ld ; then
2012 AC_ARG_WITH(plugin-ld,
2013 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2014 [if test x"$withval" != x; then
2015 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2016 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2018 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2019 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2021 # Check to see if we are using gold instead of ld
2022 AC_MSG_CHECKING(whether we are using gold)
2024 if test x$gcc_cv_ld != x; then
2025 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2026 | grep "GNU gold" > /dev/null; then
2030 AC_MSG_RESULT($ld_is_gold)
2032 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2033 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2034 case "$ORIGINAL_LD_FOR_TARGET" in
2035 ./collect-ld | ./collect-ld$build_exeext) ;;
2036 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2039 AC_MSG_CHECKING(what linker to use)
2040 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2041 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2042 # Single tree build which includes ld. We want to prefer it
2043 # over whatever linker top-level may have detected, since
2044 # we'll use what we're building after installation anyway.
2045 AC_MSG_RESULT(newly built ld)
2047 in_tree_ld_is_elf=no
2048 if (grep 'EMUL = .*elf' ../ld/Makefile \
2049 || grep 'EMUL = .*linux' ../ld/Makefile \
2050 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2051 in_tree_ld_is_elf=yes
2052 elif test "$ld_is_gold" = yes; then
2053 in_tree_ld_is_elf=yes
2055 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
2058 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2059 if test x$gcc_cv_gld_version != x; then
2063 case $gcc_cv_gld_version in
2066 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2069 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2070 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2073 AC_MSG_RESULT($gcc_cv_ld)
2077 # Figure out what nm we will be using.
2078 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2079 AS_VAR_SET_IF(gcc_cv_nm,, [
2080 if test -f $gcc_cv_binutils_srcdir/configure.in \
2081 && test -f ../binutils/Makefile \
2082 && test x$build = x$host; then
2083 gcc_cv_nm=../binutils/nm-new$build_exeext
2084 elif test -x nm$build_exeext; then
2085 gcc_cv_nm=./nm$build_exeext
2086 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2087 gcc_cv_nm="$NM_FOR_TARGET"
2089 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2092 AC_MSG_CHECKING(what nm to use)
2093 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2094 # Single tree build which includes binutils.
2095 AC_MSG_RESULT(newly built nm)
2098 AC_MSG_RESULT($gcc_cv_nm)
2102 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2103 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2104 case "$ORIGINAL_NM_FOR_TARGET" in
2105 ./nm | ./nm$build_exeext) ;;
2106 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2110 # Figure out what objdump we will be using.
2111 AS_VAR_SET_IF(gcc_cv_objdump,, [
2112 if test -f $gcc_cv_binutils_srcdir/configure.in \
2113 && test -f ../binutils/Makefile \
2114 && test x$build = x$host; then
2115 # Single tree build which includes binutils.
2116 gcc_cv_objdump=../binutils/objdump$build_exeext
2117 elif test -x objdump$build_exeext; then
2118 gcc_cv_objdump=./objdump$build_exeext
2119 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2120 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2122 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2125 AC_MSG_CHECKING(what objdump to use)
2126 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2127 # Single tree build which includes binutils.
2128 AC_MSG_RESULT(newly built objdump)
2129 elif test x$gcc_cv_objdump = x; then
2130 AC_MSG_RESULT(not found)
2132 AC_MSG_RESULT($gcc_cv_objdump)
2135 # Figure out what readelf we will be using.
2136 AS_VAR_SET_IF(gcc_cv_readelf,, [
2137 if test -f $gcc_cv_binutils_srcdir/configure.in \
2138 && test -f ../binutils/Makefile \
2139 && test x$build = x$host; then
2140 # Single tree build which includes binutils.
2141 gcc_cv_readelf=../binutils/readelf$build_exeext
2142 elif test -x readelf$build_exeext; then
2143 gcc_cv_readelf=./readelf$build_exeext
2145 AC_PATH_PROG(gcc_cv_readelf, readelf)
2148 AC_MSG_CHECKING(what readelf to use)
2149 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2150 # Single tree build which includes binutils.
2151 AC_MSG_RESULT(newly built readelf)
2152 elif test x$gcc_cv_readelf = x; then
2153 AC_MSG_RESULT(not found)
2155 AC_MSG_RESULT($gcc_cv_readelf)
2158 # Figure out what assembler alignment features are present.
2159 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2163 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2164 [Define if your assembler supports .balign and .p2align.])])
2166 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2169 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2170 [Define if your assembler supports specifying the maximum number
2171 of bytes to skip when using the GAS .p2align command.])])
2173 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2176 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2177 [Define if your assembler supports .literal16.])])
2179 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2181 [conftest_label1: .word 0
2183 conftest_label2: .word 0
2185 [if test x$gcc_cv_nm != x; then
2186 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2187 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2188 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2190 else gcc_cv_as_subsection_m1=yes
2192 rm -f conftest.nm1 conftest.nm2
2194 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2195 [Define if your assembler supports .subsection and .subsection -1 starts
2196 emitting at the beginning of your section.])])
2198 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2201 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2203 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2205 [ .weakref foobar, barfnot],,
2206 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2208 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2211 .NSUBSPA $CODE$,COMDAT],,
2212 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2214 # .hidden needs to be supported in both the assembler and the linker,
2215 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2216 # This is irritatingly difficult to feature test for; we have to check the
2217 # date string after the version number. If we've got an in-tree
2218 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2220 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2221 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2225 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2226 # STV_HIDDEN, so disable .hidden support if so.
2228 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2229 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2230 cat > conftest.s <<EOF
2237 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2238 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2239 grep '\.hidden default' > /dev/null; then
2242 gcc_cv_as_hidden=yes
2245 # Assume bug is present if objdump is missing.
2250 gcc_cv_as_hidden=yes
2255 # Darwin as has some visibility support, though with a different syntax.
2256 gcc_cv_as_hidden=yes
2260 # gnu_indirect_function type is an extension proposed at
2261 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2262 # selection of function implementation
2263 AC_ARG_ENABLE(gnu-indirect-function,
2264 [AS_HELP_STRING([--enable-gnu-indirect-function],
2265 [enable the use of the @gnu_indirect_function to glibc systems])],
2266 [case $enable_gnu_indirect_function in
2268 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2269 Valid choices are 'yes' and 'no'.]) ;;
2271 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2272 if test x$enable_gnu_indirect_function = xyes; then
2273 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2274 [Define if your system supports gnu indirect functions.])
2278 if test $in_tree_ld != yes ; then
2279 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2280 if echo "$ld_ver" | grep GNU > /dev/null; then
2281 if test x"$ld_is_gold" = xyes; then
2282 # GNU gold --version looks like this:
2284 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2286 # We extract the binutils version which is more familiar and specific
2287 # than the gold version.
2288 ld_vers=`echo $ld_ver | sed -n \
2289 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2291 # GNU ld --version looks like this:
2293 # GNU ld (GNU Binutils) 2.21.51.20110225
2294 ld_vers=`echo $ld_ver | sed -n \
2295 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2297 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2298 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2299 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2300 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2304 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2307 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2308 # /usr/ccs/bin/ld has been configured.
2309 ld_ver=`$gcc_cv_ld -V 2>&1`
2310 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2311 ld_vers=`echo $ld_ver | sed -n \
2312 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2313 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2314 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2322 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2323 [[if test $in_tree_ld = yes ; then
2325 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2326 && test $in_tree_ld_is_elf = yes; then
2327 gcc_cv_ld_hidden=yes
2330 gcc_cv_ld_hidden=yes
2331 if test x"$ld_is_gold" = xyes; then
2333 elif echo "$ld_ver" | grep GNU > /dev/null; then
2335 mmix-knuth-mmixware)
2336 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2340 if test 0"$ld_date" -lt 20020404; then
2341 if test -n "$ld_date"; then
2342 # If there was date string, but was earlier than 2002-04-04, fail
2344 elif test -z "$ld_vers"; then
2345 # If there was no date string nor ld version number, something is wrong
2348 test -z "$ld_vers_patch" && ld_vers_patch=0
2349 if test "$ld_vers_major" -lt 2; then
2351 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2352 gcc_cv_ld_hidden="no"
2353 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2361 # Darwin ld has some visibility support.
2362 gcc_cv_ld_hidden=yes
2364 hppa64*-*-hpux* | ia64*-*-hpux*)
2365 gcc_cv_ld_hidden=yes
2367 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2368 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2369 # .symbolic was only added in Solaris 9 12/02.
2370 gcc_cv_ld_hidden=yes
2378 libgcc_visibility=no
2379 AC_SUBST(libgcc_visibility)
2380 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2381 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2382 libgcc_visibility=yes
2383 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2384 [Define if your assembler and linker support .hidden.])
2387 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2388 gcc_cv_ld_ro_rw_mix=unknown
2389 if test $in_tree_ld = yes ; then
2390 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2391 && test $in_tree_ld_is_elf = yes; then
2392 gcc_cv_ld_ro_rw_mix=read-write
2394 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2395 echo '.section myfoosect, "a"' > conftest1.s
2396 echo '.section myfoosect, "aw"' > conftest2.s
2397 echo '.byte 1' >> conftest2.s
2398 echo '.section myfoosect, "a"' > conftest3.s
2399 echo '.byte 0' >> conftest3.s
2400 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2401 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2402 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2403 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2404 conftest2.o conftest3.o > /dev/null 2>&1; then
2405 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2406 | sed -e '/myfoosect/!d' -e N`
2407 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2408 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2409 gcc_cv_ld_ro_rw_mix=read-only
2411 gcc_cv_ld_ro_rw_mix=read-write
2416 rm -f conftest.* conftest[123].*
2419 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2420 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2421 [Define if your linker links a mix of read-only
2422 and read-write sections into a read-write section.])
2424 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2426 gcc_AC_INITFINI_ARRAY
2428 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2429 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2437 [[# GAS versions before 2.11 do not support uleb128,
2438 # despite appearing to.
2439 # ??? There exists an elf-specific test that will crash
2440 # the assembler. Perhaps it's better to figure out whether
2441 # arbitrary sections are supported and try the test.
2442 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2443 if echo "$as_ver" | grep GNU > /dev/null; then
2444 as_vers=`echo $as_ver | sed -n \
2445 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2446 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2447 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2448 if test $as_major -eq 2 && test $as_minor -lt 11
2450 else gcc_cv_as_leb128=yes
2453 [AC_DEFINE(HAVE_AS_LEB128, 1,
2454 [Define if your assembler supports .sleb128 and .uleb128.])])
2456 # Check if we have assembler support for unwind directives.
2457 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2464 .cfi_escape 1, 2, 3, 4, 5
2468 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2469 # read-only and read-write sections, we need to make sure that the
2470 # assembler used emits read-write .eh_frame sections.
2471 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2472 if test "x$gcc_cv_objdump" != x; then
2473 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2474 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2475 gcc_cv_as_cfi_directive=no
2478 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2479 # On Solaris/x86, make sure that GCC and gas agree on using
2480 # read-only .eh_frame sections for 64-bit.
2481 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2482 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2483 sed -e /.eh_frame/!d -e N | \
2484 grep READONLY > /dev/null; then
2485 gcc_cv_as_cfi_directive=yes
2487 gcc_cv_as_cfi_directive=no
2491 gcc_cv_as_cfi_directive=yes
2496 # no objdump, err on the side of caution
2497 gcc_cv_as_cfi_directive=no
2500 gcc_cv_as_cfi_directive=yes
2504 gcc_cv_as_cfi_directive=yes
2507 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2508 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2512 .cfi_adjust_cfa_offset 64
2514 .cfi_adjust_cfa_offset 128
2517 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2518 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2519 gcc_cv_as_cfi_advance_working=yes
2523 # no objdump, err on the side of caution
2524 gcc_cv_as_cfi_advance_working=no
2526 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2527 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2528 [`if test $gcc_cv_as_cfi_directive = yes \
2529 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2530 [Define 0/1 if your assembler supports CFI directives.])
2532 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2533 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2534 gcc_cv_as_cfi_personality_directive, ,,
2537 .cfi_personality 0, symbol
2539 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2540 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2541 then echo 1; else echo 0; fi`],
2542 [Define 0/1 if your assembler supports .cfi_personality.])
2544 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2545 gcc_cv_as_cfi_sections_directive, ,,
2547 .cfi_sections .debug_frame, .eh_frame
2551 win32 | pe | cygwin* | mingw32* | uwin*)
2552 # Need to check that we generated the correct relocation for the
2553 # .debug_frame section. This was fixed for binutils 2.21.
2554 gcc_cv_as_cfi_sections_directive=no
2555 if test "x$gcc_cv_objdump" != x; then
2556 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2557 grep secrel > /dev/null; then
2558 gcc_cv_as_cfi_sections_directive=yes
2563 gcc_cv_as_cfi_sections_directive=yes
2566 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2567 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2568 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2569 then echo 1; else echo 0; fi`],
2570 [Define 0/1 if your assembler supports .cfi_sections.])
2572 # GAS versions up to and including 2.11.0 may mis-optimize
2574 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2582 .section .eh_frame,"aw",@progbits
2584 .4byte .LECIE1-.LSCIE1
2598 .4byte .LEFDE1-.LASFDE1
2600 .4byte .LASFDE1-__FRAME_BEGIN__
2608 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2609 cat > conftest.lit <<EOF
2610 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2611 0010 01000000 12000000 18000000 00000000 ................
2612 0020 08000000 04080000 0044 .........D @&t@
2614 cat > conftest.big <<EOF
2615 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2616 0010 00000001 00000012 00000018 00000000 ................
2617 0020 00000008 04000000 0844 .........D @&t@
2619 # If the assembler didn't choke, and we can objdump,
2620 # and we got the correct data, then succeed.
2621 # The text in the here-document typically retains its unix-style line
2622 # endings, while the output of objdump will use host line endings.
2623 # Therefore, use diff -b for the comparisons.
2624 if test x$gcc_cv_objdump != x \
2625 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2626 | tail -3 > conftest.got \
2627 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2628 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2630 gcc_cv_as_eh_frame=yes
2631 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2632 gcc_cv_as_eh_frame=buggy
2634 # Uh oh, what do we do now?
2635 gcc_cv_as_eh_frame=no
2638 if test $gcc_cv_as_eh_frame = buggy; then
2639 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2640 [Define if your assembler mis-optimizes .eh_frame data.])
2643 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2644 [elf,2,12,0], [--fatal-warnings],
2645 [.section .rodata.str, "aMS", @progbits, 1])
2646 if test $gcc_cv_as_shf_merge = no; then
2647 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2648 [elf,2,12,0], [--fatal-warnings],
2649 [.section .rodata.str, "aMS", %progbits, 1])
2651 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2652 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2653 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2655 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2656 gcc_cv_as_comdat_group,
2657 [elf,2,16,0], [--fatal-warnings],
2658 [.section .text,"axG",@progbits,.foo,comdat])
2659 if test $gcc_cv_as_comdat_group = yes; then
2660 gcc_cv_as_comdat_group_percent=no
2661 gcc_cv_as_comdat_group_group=no
2663 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2664 gcc_cv_as_comdat_group_percent,
2665 [elf,2,16,0], [--fatal-warnings],
2666 [.section .text,"axG",%progbits,.foo,comdat])
2667 if test $gcc_cv_as_comdat_group_percent = yes; then
2668 gcc_cv_as_comdat_group_group=no
2670 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2671 gcc_cv_as_comdat_group_group=no
2674 # Sun as uses a completely different syntax.
2679 .group foo,".text%foo",#comdat
2680 .section ".text%foo", #alloc,#execinstr,#progbits
2685 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2687 .group foo,.text%foo,#comdat
2688 .section .text%foo, "ax", @progbits
2694 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2695 gcc_cv_as_comdat_group_group,
2701 if test x"$ld_is_gold" = xyes; then
2703 elif test $in_tree_ld = yes ; then
2705 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2706 && test $in_tree_ld_is_elf = yes; then
2709 elif echo "$ld_ver" | grep GNU > /dev/null; then
2711 if test 0"$ld_date" -lt 20050308; then
2712 if test -n "$ld_date"; then
2713 # If there was date string, but was earlier than 2005-03-08, fail
2715 elif test "$ld_vers_major" -lt 2; then
2717 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2724 *-*-solaris2.1[1-9]*)
2726 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2727 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2730 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2731 # least ld version 1.2267.
2732 if test "$ld_vers_major" -gt 1; then
2734 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2736 elif test "$ld_vers_minor" -ge 2267; then
2741 # Assume linkers other than GNU ld don't support COMDAT group.
2747 # Allow overriding the automatic COMDAT group tests above.
2748 AC_ARG_ENABLE(comdat,
2749 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2750 [comdat_group="$enable_comdat"])
2751 if test $comdat_group = no; then
2752 gcc_cv_as_comdat_group=no
2753 gcc_cv_as_comdat_group_percent=no
2754 gcc_cv_as_comdat_group_group=no
2756 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2757 [`if test $gcc_cv_as_comdat_group = yes \
2758 || test $gcc_cv_as_comdat_group_percent = yes \
2759 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2760 [Define 0/1 if your assembler and linker support COMDAT groups.])
2762 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2763 gcc_cv_as_discriminator,
2767 .loc 1 1 0 discriminator 1],,
2768 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2769 [Define if your assembler supports the .loc discriminator sub-directive.])])
2771 # Thread-local storage - the check is heavily parameterized.
2780 .section ".tdata","awT",@progbits
2783 ldq $27,__tls_get_addr($29) !literal!1
2784 lda $16,foo($29) !tlsgd!1
2785 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2786 ldq $27,__tls_get_addr($29) !literal!2
2787 lda $16,foo($29) !tlsldm!2
2788 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2789 ldq $1,foo($29) !gotdtprel
2790 ldah $2,foo($29) !dtprelhi
2791 lda $3,foo($2) !dtprello
2792 lda $4,foo($29) !dtprel
2793 ldq $1,foo($29) !gottprel
2794 ldah $2,foo($29) !tprelhi
2795 lda $3,foo($2) !tprello
2796 lda $4,foo($29) !tprel'
2799 tls_as_opt=--fatal-warnings
2801 cris-*-*|crisv32-*-*)
2803 .section ".tdata","awT",@progbits
2810 tls_as_opt=--fatal-warnings
2814 .section ".tdata","awT",@progbits
2826 .section ".tdata","awT",@progbits
2830 addil LT%foo-$tls_gdidx$,gp
2831 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2834 addil LT%foo-$tls_ldidx$,gp
2836 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2837 addil LR%foo-$tls_dtpoff$,%ret0
2838 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2840 addil LT%foo-$tls_ieoff$,gp
2841 ldw RT%foo-$tls_ieoff$(%r1),%t2
2844 addil LR%foo-$tls_leoff$,%t1
2845 ldo RR%foo-$tls_leoff$(%r1),%t2'
2848 tls_as_opt=--fatal-warnings
2852 .section ".tdata","awT",%progbits
2863 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2865 i[34567]86-*-solaris2.*)
2867 tga_func=___tls_get_addr
2869 x86_64-*-solaris2.1[0-9]*)
2871 tga_func=__tls_get_addr
2877 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2879 .section .tdata,"awt",@progbits'
2883 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2884 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2888 .section ".tdata","awT",@progbits'
2891 tls_as_opt="--fatal-warnings"
2893 conftest_s="$conftest_s
2897 leal foo@tlsgd(,%ebx,1), %eax
2898 leal foo@tlsldm(%ebx), %eax
2899 leal foo@dtpoff(%eax), %edx
2900 movl foo@gottpoff(%ebx), %eax
2901 subl foo@gottpoff(%ebx), %eax
2902 addl foo@gotntpoff(%ebx), %eax
2903 movl foo@indntpoff, %eax
2904 movl \$foo@tpoff, %eax
2905 subl \$foo@tpoff, %eax
2906 leal foo@ntpoff(%ecx), %eax"
2910 .section ".tdata","awT",@progbits
2914 leaq foo@TLSGD(%rip), %rdi
2915 leaq foo@TLSLD(%rip), %rdi
2916 leaq foo@DTPOFF(%rax), %rdx
2917 movq foo@GOTTPOFF(%rip), %rax
2918 movq $foo@TPOFF, %rax'
2921 tls_as_opt=--fatal-warnings
2925 .section ".tdata","awT",@progbits
2928 addl r16 = @ltoff(@dtpmod(foo#)), gp
2929 addl r17 = @ltoff(@dtprel(foo#)), gp
2930 addl r18 = @ltoff(@tprel(foo#)), gp
2931 addl r19 = @dtprel(foo#), gp
2932 adds r21 = @dtprel(foo#), r13
2933 movl r23 = @dtprel(foo#)
2934 addl r20 = @tprel(foo#), gp
2935 adds r22 = @tprel(foo#), r13
2936 movl r24 = @tprel(foo#)'
2939 tls_as_opt=--fatal-warnings
2943 .section .tdata,"awT",@progbits
2947 addiu $4, $28, %tlsgd(x)
2948 addiu $4, $28, %tlsldm(x)
2949 lui $4, %dtprel_hi(x)
2950 addiu $4, $4, %dtprel_lo(x)
2951 lw $4, %gottprel(x)($28)
2952 lui $4, %tprel_hi(x)
2953 addiu $4, $4, %tprel_lo(x)'
2956 tls_as_opt='-32 --fatal-warnings'
2960 .section .tdata,"awT",@progbits
2965 move.l x@TLSGD(%a5),%a0
2966 move.l x@TLSLDM(%a5),%a0
2967 move.l x@TLSLDO(%a5),%a0
2968 move.l x@TLSIE(%a5),%a0
2969 move.l x@TLSLE(%a5),%a0'
2972 tls_as_opt='--fatal-warnings'
2976 .section ".tdata","awT",%progbits
2980 add x0, x0, #:tlsgd_lo12:x
2985 tls_as_opt='--fatal-warnings'
2989 .section ".tdata","awT",@progbits
2997 addi 3,31,ld0@got@tlsgd
2999 addi 3,31,x1@got@tlsld
3002 addis 9,3,x2@dtprel@ha
3003 addi 9,9,x2@dtprel@l
3004 lwz 9,x3@got@tprel(31)
3007 addis 9,2,x2@tprel@ha
3008 addi 9,9,x2@tprel@l'
3011 tls_as_opt="-a32 --fatal-warnings"
3015 .section ".tdata","awT",@progbits
3023 addi 3,2,ld0@got@tlsgd
3029 addi 3,2,x1@got@tlsld
3035 addis 9,3,x2@dtprel@ha
3036 addi 9,9,x2@dtprel@l
3039 ld 9,x3@got@dtprel(2)
3045 tls_as_opt="-a64 --fatal-warnings"
3049 .section ".tdata","awT",@progbits
3058 l %r1,foo@GOTNTPOFF(%r12)
3059 l %r1,0(%r1):tls_load:foo
3060 bas %r14,0(%r1,%r13):tls_gdcall:foo
3061 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3064 tls_as_opt="-m31 --fatal-warnings"
3068 .section ".tdata","awT",@progbits
3076 lg %r1,foo@GOTNTPOFF(%r12)
3077 larl %r1,foo@INDNTPOFF
3078 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3079 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3082 tls_as_opt="-m64 -Aesame --fatal-warnings"
3084 sh-*-* | sh[34]-*-*)
3086 .section ".tdata","awT",@progbits
3096 tls_as_opt=--fatal-warnings
3100 sparc*-sun-solaris2.*)
3102 tga_func=__tls_get_addr
3108 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3110 .section ".tdata",#alloc,#write,#tls'
3115 .section ".tdata","awT",@progbits'
3118 tls_as_opt="-32 --fatal-warnings"
3120 conftest_s="$conftest_s
3123 sethi %tgd_hi22(foo), %o0
3124 add %o0, %tgd_lo10(foo), %o1
3125 add %l7, %o1, %o0, %tgd_add(foo)
3126 call __tls_get_addr, %tgd_call(foo)
3127 sethi %tldm_hi22(foo), %l1
3128 add %l1, %tldm_lo10(foo), %l2
3129 add %l7, %l2, %o0, %tldm_add(foo)
3130 call __tls_get_addr, %tldm_call(foo)
3131 sethi %tldo_hix22(foo), %l3
3132 xor %l3, %tldo_lox10(foo), %l4
3133 add %o0, %l4, %l5, %tldo_add(foo)
3134 sethi %tie_hi22(foo), %o3
3135 add %o3, %tie_lo10(foo), %o3
3136 ld [%l7 + %o3], %o2, %tie_ld(foo)
3137 add %g7, %o2, %o4, %tie_add(foo)
3138 sethi %tle_hix22(foo), %l1
3139 xor %l1, %tle_lox10(foo), %o5
3140 ld [%g7 + %o5], %o1"
3144 .section ".tdata","awT",@progbits
3147 addli r0, zero, tls_gd(foo)
3148 auli r0, zero, tls_gd_ha16(foo)
3149 addli r0, r0, tls_gd_lo16(foo)
3151 addli r0, zero, tls_ie(foo)
3152 auli r0, r0, tls_ie_ha16(foo)
3153 addli r0, r0, tls_ie_lo16(foo)'
3156 tls_as_opt="--fatal-warnings"
3160 .section ".tdata","awT",@progbits
3163 shl16insli r0, zero, hw0_last_tls_gd(foo)
3164 shl16insli r0, zero, hw1_last_tls_gd(foo)
3165 shl16insli r0, r0, hw0_tls_gd(foo)
3167 shl16insli r0, zero, hw1_last_tls_ie(foo)
3168 shl16insli r0, r0, hw0_tls_ie(foo)'
3171 tls_as_opt="--fatal-warnings"
3175 .section ".tdata","awT",@progbits
3178 movi a8, foo@TLSFUNC
3179 movi a10, foo@TLSARG
3180 callx8.tls a8, foo@TLSCALL'
3187 if test "x$enable_tls" = xno ; then
3188 : # TLS explicitly disabled.
3189 elif test "x$enable_tls" = xyes ; then
3190 set_have_as_tls=yes # TLS explicitly enabled.
3191 elif test -z "$tls_first_major"; then
3192 : # If we don't have a check, assume no support.
3194 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3195 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3196 [set_have_as_tls=yes])
3199 # TLS was introduced in the Solaris 9 FCS release. Support for GNU-style
3200 # TLS on x86 was only introduced in Solaris 9 4/04, replacing the earlier
3201 # Sun style that Sun ld and GCC don't support any longer.
3203 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3205 # Check ld and ld.so.1 TLS support.
3206 if echo "$ld_ver" | grep GNU > /dev/null; then
3207 # Assume all interesting versions of GNU ld have TLS support.
3208 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3212 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3214 min_tls_ld_vers_minor=374
3216 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3217 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3218 min_tls_ld_vers_minor=343
3221 if test "$ld_vers_major" -gt 1 || \
3222 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3228 AC_MSG_RESULT($ld_tls_support)
3231 save_LDFLAGS="$LDFLAGS"
3235 AC_MSG_CHECKING(library containing $tga_func)
3236 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3237 # (32-bit x86) only lived in libthread, so check for that. Keep
3238 # set_have_as_tls if found, disable if not.
3239 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3240 # Clear LIBS if we cannot support TLS.
3241 if test $set_have_as_tls = no; then
3244 # Always define LIB_TLS_SPEC, even without TLS support.
3245 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3246 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3247 AC_MSG_RESULT($LIBS)
3250 LDFLAGS="$save_LDFLAGS"
3253 if test $set_have_as_tls = yes ; then
3254 AC_DEFINE(HAVE_AS_TLS, 1,
3255 [Define if your assembler and linker support thread-local storage.])
3258 # Target-specific assembler checks.
3260 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3261 gcc_cv_ld_static_dynamic=no
3262 gcc_cv_ld_static_option='-Bstatic'
3263 gcc_cv_ld_dynamic_option='-Bdynamic'
3264 if test $in_tree_ld = yes ; then
3265 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3266 gcc_cv_ld_static_dynamic=yes
3268 elif test x$gcc_cv_ld != x; then
3269 # Check if linker supports -Bstatic/-Bdynamic option
3270 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3271 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3272 gcc_cv_ld_static_dynamic=yes
3275 # HP-UX ld uses -a flags to select between shared and archive.
3277 if test x"$gnu_ld" = xno; then
3278 gcc_cv_ld_static_dynamic=yes
3279 gcc_cv_ld_static_option="-aarchive_shared"
3280 gcc_cv_ld_dynamic_option="-adefault"
3283 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3285 gcc_cv_ld_static_dynamic=yes
3290 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3291 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3292 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3293 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3294 [Define to the linker option to disable use of shared objects.])
3295 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3296 [Define to the linker option to enable use of shared objects.])
3298 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3300 if test x"$demangler_in_ld" = xyes; then
3301 AC_MSG_CHECKING(linker --demangle support)
3302 gcc_cv_ld_demangle=no
3303 if test $in_tree_ld = yes; then
3304 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3305 gcc_cv_ld_demangle=yes
3307 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3308 # Check if the GNU linker supports --demangle option
3309 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3310 gcc_cv_ld_demangle=yes
3313 if test x"$gcc_cv_ld_demangle" = xyes; then
3314 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3315 [Define if your linker supports --demangle option.])
3317 AC_MSG_RESULT($gcc_cv_ld_demangle)
3320 AC_MSG_CHECKING(linker plugin support)
3322 if test -f liblto_plugin.la; then
3323 save_ld_ver="$ld_ver"
3324 save_ld_vers_major="$ld_vers_major"
3325 save_ld_vers_minor="$ld_vers_minor"
3326 save_ld_is_gold="$ld_is_gold"
3330 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3332 # FIXME: ld_is_gold?
3333 ld_vers_major="$gcc_cv_gld_major_version"
3334 ld_vers_minor="$gcc_cv_gld_minor_version"
3336 # Determine plugin linker version.
3337 # FIXME: Partial duplicate from above, generalize.
3339 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3340 if echo "$ld_ver" | grep GNU > /dev/null; then
3341 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3343 ld_vers=`echo $ld_ver | sed -n \
3344 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3346 ld_vers=`echo $ld_ver | sed -n \
3347 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3349 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3350 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3355 # Determine plugin support.
3356 if echo "$ld_ver" | grep GNU > /dev/null; then
3357 # Require GNU ld or gold 2.21+ for plugin support by default.
3358 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3360 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3361 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3366 ld_ver="$save_ld_ver"
3367 ld_vers_major="$save_ld_vers_major"
3368 ld_vers_minor="$save_ld_vers_minor"
3369 ld_is_gold="$save_ld_is_gold"
3371 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3372 [Define to the level of your linker's plugin support.])
3373 AC_MSG_RESULT($gcc_cv_lto_plugin)
3376 # All TARGET_ABI_OSF targets.
3377 alpha*-*-linux* | alpha*-*-*bsd*)
3378 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3379 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3382 extbl $3, $2, $3 !lituse_bytoff!1
3383 ldq $2, a($29) !literal!1
3384 ldq $4, b($29) !literal!2
3385 ldq_u $3, 0($2) !lituse_base!1
3386 ldq $27, f($29) !literal!5
3387 jsr $26, ($27), f !lituse_jsr!5
3388 ldah $29, 0($26) !gpdisp!3
3389 lda $0, c($29) !gprel
3390 ldah $1, d($29) !gprelhigh
3391 lda $1, d($1) !gprellow
3392 lda $29, 0($29) !gpdisp!3],,
3393 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3394 [Define if your assembler supports explicit relocations.])])
3395 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3396 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3399 ldq $27, a($29) !literal!1
3400 jsr $26, ($27), a !lituse_jsrdirect!1],,
3401 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3402 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3406 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3407 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3408 [-no-mul-bug-abort], [.text],,
3409 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3410 [Define if your assembler supports the -no-mul-bug-abort option.])])
3414 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3415 [.register %g2, #scratch],,
3416 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3417 [Define if your assembler supports .register.])])
3419 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3421 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3422 [Define if your assembler supports -relax option.])])
3424 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3425 gcc_cv_as_sparc_gotdata_op,,
3432 sethi %gdop_hix22(foo), %g1
3433 xor %g1, %gdop_lox10(foo), %g1
3434 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3435 [if test x$gcc_cv_ld != x \
3436 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3437 if test x$gcc_cv_objdump != x; then
3438 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3439 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3440 gcc_cv_as_sparc_gotdata_op=no
3442 gcc_cv_as_sparc_gotdata_op=yes
3447 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3448 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3450 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3451 gcc_cv_as_sparc_ua_pcrel,,
3459 .uaword %r_disp32(foo)],
3460 [if test x$gcc_cv_ld != x \
3461 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3462 gcc_cv_as_sparc_ua_pcrel=yes
3465 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3466 [Define if your assembler and linker support unaligned PC relative relocs.])
3468 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3469 gcc_cv_as_sparc_ua_pcrel_hidden,,
3474 .uaword %r_disp32(foo)
3475 .byte 0x32, 0x33, 0x34
3480 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3481 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3482 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3483 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3484 if $gcc_cv_objdump -R conftest 2> /dev/null \
3485 | grep 'DISP32' > /dev/null 2>&1; then
3488 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3492 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3493 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3494 ]) # unaligned pcrel relocs
3496 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3497 gcc_cv_as_sparc_offsetable_lo10,,
3500 or %g1, %lo(ab) + 12, %g1
3501 or %g1, %lo(ab + 12), %g1],
3502 [if test x$gcc_cv_objdump != x \
3503 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3504 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3505 gcc_cv_as_sparc_offsetable_lo10=yes
3507 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3508 [Define if your assembler supports offsetable %lo().])])
3510 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3511 gcc_cv_as_sparc_fmaf,,
3514 .register %g2, #scratch
3515 .register %g3, #scratch
3517 fmaddd %f0, %f2, %f4, %f6
3518 addxccc %g1, %g2, %g3
3519 fsrl32 %f2, %f4, %f8
3520 fnaddd %f10, %f12, %f14],,
3521 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3522 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3526 i[34567]86-*-* | x86_64-*-*)
3530 # Full C++ conformance when using a shared libstdc++-v3 requires some
3531 # support from the Cygwin DLL, which in more recent versions exports
3532 # wrappers to aid in interposing and redirecting operators new, delete,
3533 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3534 # are configuring for a version of Cygwin that exports the wrappers.
3535 if test x$host = x$target; then
3536 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3538 # Can't check presence of libc functions during cross-compile, so
3539 # we just have to assume we're building for an up-to-date target.
3540 gcc_ac_cygwin_dll_wrappers=yes
3542 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3543 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3544 [Define if you want to generate code by default that assumes that the
3545 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3548 cygwin* | pe | mingw32* | interix*)
3549 # Recent binutils allows the three-operand form of ".comm" on PE. This
3550 # definition is used unconditionally to initialise the default state of
3551 # the target option variable that governs usage of the feature.
3552 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3553 [2,19,52],,[.comm foo,1,32])
3554 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3555 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3556 [Define if your assembler supports specifying the alignment
3557 of objects allocated using the GAS .comm command.])
3558 # Used for DWARF 2 in PE
3559 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3560 gcc_cv_as_ix86_pe_secrel32,
3566 [if test x$gcc_cv_ld != x \
3567 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3568 gcc_cv_as_ix86_pe_secrel32=yes
3571 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3572 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3573 # Test if the assembler supports the extended form of the .section
3574 # directive that specifies section alignment. LTO support uses this,
3575 # but normally only after installation, so we warn but don't fail the
3576 # configure if LTO is enabled but the assembler does not support it.
3577 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3578 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3579 if test x$gcc_cv_as_section_has_align != xyes; then
3580 case ",$enable_languages," in
3582 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3586 # Test if the assembler supports the section flag 'e' for specifying
3587 # an excluded section.
3588 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3592 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3593 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3594 [Define if your assembler supports specifying the section flag e.])
3598 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3599 gcc_cv_as_ix86_filds,,,
3600 [filds mem; fists mem],,
3601 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3602 [Define if your assembler uses filds and fists mnemonics.])])
3604 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3605 gcc_cv_as_ix86_fildq,,,
3606 [fildq mem; fistpq mem],,
3607 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3608 [Define if your assembler uses fildq and fistq mnemonics.])])
3610 gcc_GAS_CHECK_FEATURE([cmov syntax],
3611 gcc_cv_as_ix86_cmov_sun_syntax,,,
3612 [cmovl.l %edx, %eax],,
3613 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3614 [Define if your assembler supports the Sun syntax for cmov.])])
3616 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3617 gcc_cv_as_ix86_ffreep,,,
3619 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3620 [Define if your assembler supports the ffreep mnemonic.])])
3622 gcc_GAS_CHECK_FEATURE([.quad directive],
3623 gcc_cv_as_ix86_quad,,,
3625 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3626 [Define if your assembler supports the .quad directive.])])
3628 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3629 gcc_cv_as_ix86_sahf,,,
3632 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3633 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3635 gcc_GAS_CHECK_FEATURE([hle prefixes],
3636 gcc_cv_as_ix86_hle,,,
3637 [lock xacquire cmpxchg %esi, (%ecx)],,
3638 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3639 [Define if your assembler supports HLE prefixes.])])
3641 gcc_GAS_CHECK_FEATURE([swap suffix],
3642 gcc_cv_as_ix86_swap,,,
3643 [movl.s %esp, %ebp],,
3644 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3645 [Define if your assembler supports the swap suffix.])])
3647 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3648 gcc_cv_as_ix86_diff_sect_delta,,,
3656 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3657 [Define if your assembler supports the subtraction of symbols in different sections.])])
3659 # These two are used unconditionally by i386.[ch]; it is to be defined
3660 # to 1 if the feature is present, 0 otherwise.
3661 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3662 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3668 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3669 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3670 [Define true if the assembler supports '.long foo@GOTOFF'.])
3672 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3673 gcc_cv_as_ix86_rep_lock_prefix,,,
3679 lock addl %edi, (%eax,%esi)
3680 lock orl $0, (%esp)],,
3681 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3682 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3684 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3685 gcc_cv_as_ix86_tlsgdplt,,,
3686 [call tls_gd@tlsgdplt],
3687 [if test x$gcc_cv_ld != x \
3688 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3689 gcc_cv_as_ix86_tlsgdplt=yes
3692 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3693 [Define if your assembler and linker support @tlsgdplt.])])
3695 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3696 gcc_cv_as_ix86_tlsldmplt,,,
3698 call tls_ld@tlsldmplt],
3699 [if test x$gcc_cv_ld != x \
3700 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3701 gcc_cv_as_ix86_tlsldmplt=yes
3704 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3705 [Define if your assembler and linker support @tlsldmplt.])])
3710 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3711 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3713 addl r15 = @ltoffx(x#), gp
3715 ld8.mov r16 = [[r15]], x#],,
3716 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3717 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3723 *-*-aix*) conftest_s=' .machine "pwr5"
3727 gcc_GAS_CHECK_FEATURE([.machine directive support],
3728 gcc_cv_as_machine_directive,,,
3729 [ .machine ppc7400])
3730 if test x$gcc_cv_as_machine_directive != xyes; then
3731 echo "*** This target requires an assembler supporting \".machine\"" >&2
3732 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3733 test x$build = x$target && exit 1
3737 *) conftest_s=' .machine power4
3742 gcc_GAS_CHECK_FEATURE([mfcr field support],
3743 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3745 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3746 [Define if your assembler supports mfcr field.])])
3749 *-*-aix*) conftest_s=' .machine "pwr5"
3752 *) conftest_s=' .machine power5
3757 gcc_GAS_CHECK_FEATURE([popcntb support],
3758 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3760 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3761 [Define if your assembler supports popcntb field.])])
3764 *-*-aix*) conftest_s=' .machine "pwr5x"
3767 *) conftest_s=' .machine power5
3772 gcc_GAS_CHECK_FEATURE([fp round support],
3773 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3775 [AC_DEFINE(HAVE_AS_FPRND, 1,
3776 [Define if your assembler supports fprnd.])])
3779 *-*-aix*) conftest_s=' .machine "pwr6"
3782 *) conftest_s=' .machine power6
3787 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3788 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3790 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3791 [Define if your assembler supports mffgpr and mftgpr.])])
3794 *-*-aix*) conftest_s=' .csect .text[[PR]]
3796 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3800 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3801 *) conftest_s=' .text
3803 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3806 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3807 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3809 [AC_DEFINE(HAVE_AS_REL16, 1,
3810 [Define if your assembler supports R_PPC_REL16 relocs.])])
3813 *-*-aix*) conftest_s=' .machine "pwr6"
3816 *) conftest_s=' .machine power6
3821 gcc_GAS_CHECK_FEATURE([compare bytes support],
3822 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3824 [AC_DEFINE(HAVE_AS_CMPB, 1,
3825 [Define if your assembler supports cmpb.])])
3828 *-*-aix*) conftest_s=' .machine "pwr6"
3831 *) conftest_s=' .machine power6
3836 gcc_GAS_CHECK_FEATURE([decimal float support],
3837 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3839 [AC_DEFINE(HAVE_AS_DFP, 1,
3840 [Define if your assembler supports DFP instructions.])])
3843 *-*-aix*) conftest_s=' .machine "pwr7"
3846 *) conftest_s=' .machine power7
3851 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3852 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3854 [AC_DEFINE(HAVE_AS_VSX, 1,
3855 [Define if your assembler supports VSX instructions.])])
3858 *-*-aix*) conftest_s=' .machine "pwr7"
3861 *) conftest_s=' .machine power7
3866 gcc_GAS_CHECK_FEATURE([popcntd support],
3867 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3869 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3870 [Define if your assembler supports POPCNTD instructions.])])
3873 *-*-aix*) conftest_s=' .machine "pwr8"
3874 .csect .text[[PR]]';;
3875 *) conftest_s=' .machine power8
3879 gcc_GAS_CHECK_FEATURE([power8 support],
3880 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
3882 [AC_DEFINE(HAVE_AS_POWER8, 1,
3883 [Define if your assembler supports POWER8 instructions.])])
3886 *-*-aix*) conftest_s=' .csect .text[[PR]]
3888 *) conftest_s=' .text
3892 gcc_GAS_CHECK_FEATURE([lwsync support],
3893 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3895 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3896 [Define if your assembler supports LWSYNC instructions.])])
3899 *-*-aix*) conftest_s=' .machine "476"
3902 *) conftest_s=' .machine "476"
3907 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3908 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3910 [AC_DEFINE(HAVE_AS_DCI, 1,
3911 [Define if your assembler supports the DCI/ICI instructions.])])
3913 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3914 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3915 [.gnu_attribute 4,1],,
3916 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3917 [Define if your assembler supports .gnu_attribute.])])
3919 gcc_GAS_CHECK_FEATURE([tls marker support],
3920 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3921 [ bl __tls_get_addr(x@tlsgd)],,
3922 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3923 [Define if your assembler supports arg info for __tls_get_addr.])])
3927 gcc_GAS_CHECK_FEATURE([.ref support],
3928 gcc_cv_as_aix_ref, [2,21,0],,
3929 [ .csect stuff[[rw]]
3935 [AC_DEFINE(HAVE_AS_REF, 1,
3936 [Define if your assembler supports .ref])])
3942 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3943 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3944 [ lw $4,%gp_rel(foo)($4)],,
3945 [if test x$target_cpu_default = x
3946 then target_cpu_default=MASK_EXPLICIT_RELOCS
3947 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3949 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3950 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3951 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3952 [Define if the assembler understands -mno-shared.])])
3954 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3955 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3956 [.gnu_attribute 4,1],,
3957 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3958 [Define if your assembler supports .gnu_attribute.])])
3960 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3961 gcc_cv_as_mips_dtprelword, [2,18,0],,
3962 [.section .tdata,"awT",@progbits
3966 .dtprelword x+0x8000],,
3967 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3968 [Define if your assembler supports .dtprelword.])])
3970 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3971 gcc_cv_as_mips_dspr1_mult,,,
3981 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3982 [Define if your assembler supports DSPR1 mult.])])
3984 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3985 gcc_cv_as_ld_jalr_reloc=no
3986 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3987 if test $in_tree_ld = yes ; then
3988 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3989 && test $in_tree_ld_is_elf = yes; then
3990 gcc_cv_as_ld_jalr_reloc=yes
3992 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3993 echo ' .ent x' > conftest.s
3994 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3995 echo ' ld $25,%call16(y)($28)' >> conftest.s
3996 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3997 echo '1: jalr $25' >> conftest.s
3998 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3999 echo '1: jalr $25' >> conftest.s
4000 echo ' .end x' >> conftest.s
4001 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4002 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4003 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4004 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4005 gcc_cv_as_ld_jalr_reloc=yes
4011 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4012 if test x$target_cpu_default = x; then
4013 target_cpu_default=MASK_RELAX_PIC_CALLS
4015 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4018 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4020 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4021 [gcc_cv_ld_mips_personality_relaxation],
4022 [gcc_cv_ld_mips_personality_relaxation=no
4023 if test $in_tree_ld = yes ; then
4024 if test "$gcc_cv_gld_major_version" -eq 2 \
4025 -a "$gcc_cv_gld_minor_version" -ge 21 \
4026 -o "$gcc_cv_gld_major_version" -gt 2; then
4027 gcc_cv_ld_mips_personality_relaxation=yes
4029 elif test x$gcc_cv_as != x \
4030 -a x$gcc_cv_ld != x \
4031 -a x$gcc_cv_readelf != x ; then
4032 cat > conftest.s <<EOF
4034 .cfi_personality 0x80,indirect_ptr
4041 .section .data,"aw",@progbits
4045 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4046 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4047 if $gcc_cv_readelf -d conftest 2>&1 \
4048 | grep TEXTREL > /dev/null 2>&1; then
4050 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4051 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4054 gcc_cv_ld_mips_personality_relaxation=yes
4058 rm -f conftest.s conftest.o conftest])
4059 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4060 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4061 [Define if your linker can relax absolute .eh_frame personality
4062 pointers into PC-relative form.])
4067 # Mips and HP-UX need the GNU assembler.
4068 # Linux on IA64 might be able to use the Intel assembler.
4071 mips*-*-* | *-*-hpux* )
4072 if test x$gas_flag = xyes \
4073 || test x"$host" != x"$build" \
4074 || test ! -x "$gcc_cv_as" \
4075 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4078 echo "*** This configuration requires the GNU assembler" >&2
4084 # ??? Not all targets support dwarf2 debug_line, even within a version
4085 # of gas. Moreover, we need to emit a valid instruction to trigger any
4086 # info to the output file. So, as supported targets are added to gas 2.11,
4087 # add some instruction here to (also) show we expect this might work.
4088 # ??? Once 2.11 is released, probably need to add first known working
4089 # version to the per-target configury.
4091 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4092 | pa | rs6000 | score | sparc | spu | tilegx | tilepro | xstormy16 | xtensa)
4102 if test x"$insn" != x; then
4104 .file 1 \"conftest.s\"
4107 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4108 gcc_cv_as_dwarf2_debug_line,
4109 [elf,2,11,0],, [$conftest_s],
4110 [if test x$gcc_cv_objdump != x \
4111 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4112 | grep debug_line > /dev/null 2>&1; then
4113 gcc_cv_as_dwarf2_debug_line=yes
4116 # The .debug_line file table must be in the exact order that
4117 # we specified the files, since these indices are also used
4118 # by DW_AT_decl_file. Approximate this test by testing if
4119 # the assembler bitches if the same index is assigned twice.
4120 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4121 gcc_cv_as_dwarf2_file_buggy,,,
4125 if test $gcc_cv_as_dwarf2_debug_line = yes \
4126 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4127 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4128 [Define if your assembler supports dwarf2 .file/.loc directives,
4129 and preserves file table indices exactly as given.])
4132 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4133 gcc_cv_as_gdwarf2_flag,
4134 [elf,2,11,0], [--gdwarf2], [$insn],,
4135 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4136 [Define if your assembler supports the --gdwarf2 option.])])
4138 gcc_GAS_CHECK_FEATURE([--gstabs option],
4139 gcc_cv_as_gstabs_flag,
4140 [elf,2,11,0], [--gstabs], [$insn],
4141 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4142 # and warns about it, but still exits successfully. So check for
4144 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4146 else gcc_cv_as_gstabs_flag=yes
4148 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4149 [Define if your assembler supports the --gstabs option.])])
4151 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4152 gcc_cv_as_debug_prefix_map_flag,
4153 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4154 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4155 [Define if your assembler supports the --debug-prefix-map option.])])
4158 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4161 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4162 [Define if your assembler supports .lcomm with an alignment field.])])
4164 AC_ARG_ENABLE(gnu-unique-object,
4165 [AS_HELP_STRING([--enable-gnu-unique-object],
4166 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4167 [case $enable_gnu_unique_object in
4169 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4170 Valid choices are 'yes' and 'no'.]) ;;
4172 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4174 [.type foo, '$target_type_format_char'gnu_unique_object],,
4175 # We need to unquote above to to use the definition from config.gcc.
4176 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4177 [[if test x$host = x$build -a x$host = x$target &&
4178 ldd --version 2>/dev/null &&
4179 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4180 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4181 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4182 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4183 if test "$glibcnum" -ge 2011 ; then
4184 enable_gnu_unique_object=yes
4187 if test x$enable_gnu_unique_object = xyes; then
4188 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4189 [Define if your assembler supports @gnu_unique_object.])
4192 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4193 [gcc_cv_as_line_zero],
4194 [gcc_cv_as_line_zero=no
4195 if test $in_tree_gas = yes; then
4196 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4197 elif test "x$gcc_cv_as" != x; then
4198 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4199 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4200 test "x`cat conftest.out`" = x
4202 gcc_cv_as_line_zero=yes
4204 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4205 cat conftest.s >&AS_MESSAGE_LOG_FD
4206 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4207 cat conftest.out >&AS_MESSAGE_LOG_FD
4209 rm -f conftest.o conftest.s conftest.out
4211 if test "x$gcc_cv_as_line_zero" = xyes; then
4212 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4213 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4216 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4217 gcc_cv_ld_eh_frame_hdr=no
4218 if test $in_tree_ld = yes ; then
4219 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4220 && test $in_tree_ld_is_elf = yes; then
4221 gcc_cv_ld_eh_frame_hdr=yes
4223 elif test x$gcc_cv_ld != x; then
4224 if echo "$ld_ver" | grep GNU > /dev/null; then
4225 # Check if linker supports --eh-frame-hdr option
4226 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4227 gcc_cv_ld_eh_frame_hdr=yes
4232 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4233 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4234 gcc_cv_ld_eh_frame_hdr=yes
4240 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4241 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4242 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4243 [Define if your linker supports .eh_frame_hdr.])
4245 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4247 AC_MSG_CHECKING(linker position independent executable support)
4249 if test $in_tree_ld = yes ; then
4250 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4251 && test $in_tree_ld_is_elf = yes; then
4254 elif test x$gcc_cv_ld != x; then
4255 # Check if linker supports -pie option
4256 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4260 if test x"$gcc_cv_ld_pie" = xyes; then
4261 AC_DEFINE(HAVE_LD_PIE, 1,
4262 [Define if your linker supports -pie option.])
4264 AC_MSG_RESULT($gcc_cv_ld_pie)
4266 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4267 gcc_cv_ld_eh_gc_sections=no
4268 if test $in_tree_ld = yes ; then
4269 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4270 && test $in_tree_ld_is_elf = yes; then
4271 gcc_cv_ld_eh_gc_sections=yes
4273 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4274 cat > conftest.s <<EOF
4277 .type _start, @function
4280 .size _start, .-_start
4281 .section .text.foo,"ax",@progbits
4282 .type foo, @function
4286 .section .gcc_except_table.foo,"a",@progbits
4289 .section .eh_frame,"a",@progbits
4292 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4293 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4294 | grep "gc-sections option ignored" > /dev/null; then
4295 gcc_cv_ld_eh_gc_sections=no
4296 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4297 | grep gcc_except_table > /dev/null; then
4298 gcc_cv_ld_eh_gc_sections=yes
4299 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4300 if test x$gcc_cv_as_comdat_group != xyes; then
4301 gcc_cv_ld_eh_gc_sections=no
4302 cat > conftest.s <<EOF
4305 .type _start, @function
4308 .size _start, .-_start
4309 .section .gnu.linkonce.t.foo,"ax",@progbits
4310 .type foo, @function
4314 .section .gcc_except_table.foo,"a",@progbits
4317 .section .eh_frame,"a",@progbits
4320 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4321 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4322 | grep "gc-sections option ignored" > /dev/null; then
4323 gcc_cv_ld_eh_gc_sections=no
4324 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4325 | grep gcc_except_table > /dev/null; then
4326 gcc_cv_ld_eh_gc_sections=yes
4332 rm -f conftest.s conftest.o conftest
4336 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4337 gcc_cv_ld_eh_gc_sections=no
4340 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4341 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4342 [Define if your linker supports garbage collection of
4343 sections in presence of EH frames.])
4345 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4347 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4348 gcc_cv_ld_eh_gc_sections_bug=no
4349 if test $in_tree_ld = yes ; then
4350 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4351 && test $in_tree_ld_is_elf = yes; then
4352 gcc_cv_ld_eh_gc_sections_bug=yes
4354 elif test x$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
4355 gcc_cv_ld_eh_gc_sections_bug=yes
4356 cat > conftest.s <<EOF
4359 .type _start, @function
4362 .size _start, .-_start
4363 .section .text.startup.foo,"ax",@progbits
4364 .type foo, @function
4368 .section .gcc_except_table.foo,"a",@progbits
4371 .section .eh_frame,"a",@progbits
4374 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4375 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4376 | grep "gc-sections option ignored" > /dev/null; then
4378 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4379 | grep gcc_except_table > /dev/null; then
4380 gcc_cv_ld_eh_gc_sections_bug=no
4383 rm -f conftest.s conftest.o conftest
4385 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4386 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4387 [Define if your linker has buggy garbage collection of
4388 sections support when .text.startup.foo like sections are used.])
4390 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4396 AC_CACHE_CHECK(linker --as-needed support,
4397 gcc_cv_ld_as_needed,
4398 [gcc_cv_ld_as_needed=no
4399 if test $in_tree_ld = yes ; then
4400 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4401 && test $in_tree_ld_is_elf = yes; then
4402 gcc_cv_ld_as_needed=yes
4404 elif test x$gcc_cv_ld != x; then
4405 # Check if linker supports --as-needed and --no-as-needed options
4406 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4407 gcc_cv_ld_as_needed=yes
4411 if test x"$gcc_cv_ld_as_needed" = xyes; then
4412 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4413 [Define if your linker supports --as-needed and --no-as-needed options.])
4416 case "$target:$tm_file" in
4417 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4420 emul_name="-melf64ppc"
4423 emul_name="-melf64ppc_fbsd"
4426 AC_CACHE_CHECK(linker support for omitting dot symbols,
4427 gcc_cv_ld_no_dot_syms,
4428 [gcc_cv_ld_no_dot_syms=no
4429 if test x"$ld_is_gold" = xyes; then
4430 gcc_cv_ld_no_dot_syms=yes
4431 elif test $in_tree_ld = yes ; then
4432 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4433 gcc_cv_ld_no_dot_syms=yes
4435 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4436 cat > conftest1.s <<EOF
4440 cat > conftest2.s <<EOF
4441 .section ".opd","aw"
4446 .quad .LEfoo,.TOC.@tocbase,0
4452 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4453 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4454 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4455 gcc_cv_ld_no_dot_syms=yes
4457 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4460 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4461 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4462 [Define if your PowerPC64 linker only needs function descriptor syms.])
4465 AC_CACHE_CHECK(linker large toc support,
4466 gcc_cv_ld_large_toc,
4467 [gcc_cv_ld_large_toc=no
4468 if test x"$ld_is_gold" = xyes; then
4469 gcc_cv_ld_large_toc=yes
4470 elif test $in_tree_ld = yes ; then
4471 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4472 gcc_cv_ld_large_toc=yes
4474 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4475 cat > conftest.s <<EOF
4476 .section ".tbss","awT",@nobits
4482 addis 9,13,ie0@got@tprel@ha
4483 ld 9,ie0@got@tprel@l(9)
4485 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4486 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4487 gcc_cv_ld_large_toc=yes
4489 rm -f conftest conftest.o conftest.s
4492 if test x"$gcc_cv_ld_large_toc" = xyes; then
4493 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4494 [Define if your PowerPC64 linker supports a large TOC.])
4501 AC_CACHE_CHECK(linker large toc support,
4502 gcc_cv_ld_large_toc,
4503 [gcc_cv_ld_large_toc=no
4504 if test x$gcc_cv_as != x ; then
4505 cat > conftest.s <<EOF
4515 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
4516 gcc_cv_ld_large_toc=yes
4518 rm -f conftest conftest.o conftest.s
4521 if test x"$gcc_cv_ld_large_toc" = xyes; then
4522 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4523 [Define if your AIX linker supports a large TOC.])
4528 AC_CACHE_CHECK(linker --build-id support,
4530 [gcc_cv_ld_buildid=no
4531 if test $in_tree_ld = yes ; then
4532 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4533 "$gcc_cv_gld_minor_version" -ge 18 -o \
4534 "$gcc_cv_gld_major_version" -gt 2 \
4535 && test $in_tree_ld_is_elf = yes; then
4536 gcc_cv_ld_buildid=yes
4538 elif test x$gcc_cv_ld != x; then
4539 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4540 gcc_cv_ld_buildid=yes
4543 if test x"$gcc_cv_ld_buildid" = xyes; then
4544 AC_DEFINE(HAVE_LD_BUILDID, 1,
4545 [Define if your linker supports --build-id.])
4548 AC_ARG_ENABLE(linker-build-id,
4549 [AS_HELP_STRING([--enable-linker-build-id],
4550 [compiler will always pass --build-id to linker])],
4552 enable_linker_build_id=no)
4554 if test x"$enable_linker_build_id" = xyes; then
4555 if test x"$gcc_cv_ld_buildid" = xyes; then
4556 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4557 [Define if gcc should always pass --build-id to linker.])
4559 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4563 # In binutils 2.21, GNU ld gained support for new emulations fully
4564 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4565 AC_CACHE_CHECK(linker *_sol2 emulation support,
4566 gcc_cv_ld_sol2_emulation,
4567 [gcc_cv_ld_sol2_emulation=no
4568 if test $in_tree_ld = yes ; then
4569 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4570 "$gcc_cv_gld_minor_version" -ge 21 -o \
4571 "$gcc_cv_gld_major_version" -gt 2 \
4572 && test $in_tree_ld_is_elf = yes; then
4573 gcc_cv_ld_sol2_emulation=yes
4575 elif test x$gcc_cv_ld != x; then
4576 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4577 grep _sol2 > /dev/null; then
4578 gcc_cv_ld_sol2_emulation=yes
4581 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4582 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4583 [Define if your linker supports the *_sol2 emulations.])
4586 AC_CACHE_CHECK(linker --sysroot support,
4588 [gcc_cv_ld_sysroot=no
4589 if test $in_tree_ld = yes ; then
4590 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4591 gcc_cv_ld_sysroot=yes
4593 elif test x$gcc_cv_ld != x; then
4594 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4595 gcc_cv_ld_sysroot=yes
4598 if test x"$gcc_cv_ld_sysroot" = xyes; then
4599 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4600 [Define if your linker supports --sysroot.])
4603 if test x$with_sysroot = x && test x$host = x$target \
4604 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4605 && test "$prefix" != "NONE"; then
4606 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4607 [Define to PREFIX/include if cpp should also search that directory.])
4610 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4611 if test "x$with_headers" != x; then
4612 target_header_dir=$with_headers
4613 elif test "x$with_sysroot" = x; then
4614 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
4615 elif test "x$with_build_sysroot" != "x"; then
4616 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4617 elif test "x$with_sysroot" = xyes; then
4618 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4620 target_header_dir="${with_sysroot}${native_system_header_dir}"
4623 target_header_dir=${native_system_header_dir}
4626 # Test for stack protector support in target C library.
4627 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4628 gcc_cv_libc_provides_ssp,
4629 [gcc_cv_libc_provides_ssp=no
4631 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4632 [# glibc 2.4 and later provides __stack_chk_fail and
4633 # either __stack_chk_guard, or TLS access to stack guard canary.
4634 if test -f $target_header_dir/features.h \
4635 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4636 $target_header_dir/features.h > /dev/null; then
4637 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4638 $target_header_dir/features.h > /dev/null; then
4639 gcc_cv_libc_provides_ssp=yes
4640 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4641 $target_header_dir/features.h > /dev/null \
4642 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4643 $target_header_dir/features.h > /dev/null; then
4644 gcc_cv_libc_provides_ssp=yes
4645 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4646 $target_header_dir/features.h > /dev/null && \
4647 test -f $target_header_dir/bits/uClibc_config.h && \
4648 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4649 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4650 gcc_cv_libc_provides_ssp=yes
4652 # all versions of Bionic support stack protector
4653 elif test -f $target_header_dir/sys/cdefs.h \
4654 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
4655 $target_header_dir/sys/cdefs.h > /dev/null; then
4656 gcc_cv_libc_provides_ssp=yes
4660 # Avoid complicated tests (see
4661 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4662 # simply assert that glibc does provide this, which is true for all
4663 # realistically usable GNU/Hurd configurations.
4664 gcc_cv_libc_provides_ssp=yes;;
4665 *-*-darwin* | *-*-freebsd*)
4666 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4667 [echo "no __stack_chk_fail on this target"])
4669 *) gcc_cv_libc_provides_ssp=no ;;
4672 if test x$gcc_cv_libc_provides_ssp = xyes; then
4673 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4674 [Define if your target C library provides stack protector support])
4677 # Test for <sys/sdt.h> on the target.
4678 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4679 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4681 if test -f $target_header_dir/sys/sdt.h; then
4683 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4684 [Define if your target C library provides sys/sdt.h])
4686 AC_MSG_RESULT($have_sys_sdt_h)
4688 # Check if TFmode long double should be used by default or not.
4689 # Some glibc targets used DFmode long double, but with glibc 2.4
4690 # and later they can use TFmode.
4692 powerpc*-*-linux* | \
4696 AC_ARG_WITH(long-double-128,
4697 [AS_HELP_STRING([--with-long-double-128],
4698 [use 128-bit long double by default])],
4699 gcc_cv_target_ldbl128="$with_long_double_128",
4700 [[gcc_cv_target_ldbl128=no
4701 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4702 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4703 && gcc_cv_target_ldbl128=yes
4707 if test x$gcc_cv_target_ldbl128 = xyes; then
4708 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4709 [Define if TFmode long double should be the default])
4712 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4713 gcc_cv_target_dl_iterate_phdr=unknown
4715 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
4716 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
4717 # libdl there, both complicating its use and breaking compatibility
4718 # between Solaris 10 updates.
4719 *-*-solaris2.1[[1-9]]*)
4720 # <link.h> needs both a dl_iterate_phdr declaration and support for
4721 # compilation with largefile support.
4722 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4723 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4724 gcc_cv_target_dl_iterate_phdr=yes
4726 gcc_cv_target_dl_iterate_phdr=no
4730 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4731 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4732 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4733 [Define if your target C library provides the `dl_iterate_phdr' function.])
4735 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4737 # Find out what GC implementation we want, or may, use.
4739 [AS_HELP_STRING([--with-gc={page,zone}],
4740 [choose the garbage collection mechanism to use
4741 with the compiler])],
4748 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4751 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4756 echo "Using $GGC for garbage collection."
4758 # Libraries to use on the host. This will normally be set by the top
4759 # level Makefile. Here we simply capture the value for our Makefile.
4760 if test -z "${HOST_LIBS+set}"; then
4765 # Use the system's zlib library.
4767 zlibinc="-I\$(srcdir)/../zlib"
4768 AC_ARG_WITH(system-zlib,
4769 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4776 dnl Very limited version of automake's enable-maintainer-mode
4778 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4779 dnl maintainer-mode is disabled by default
4780 AC_ARG_ENABLE(maintainer-mode,
4781 [AS_HELP_STRING([--enable-maintainer-mode],
4782 [enable make rules and dependencies not useful
4783 (and sometimes confusing) to the casual installer])],
4784 maintainer_mode=$enableval,
4787 AC_MSG_RESULT($maintainer_mode)
4789 if test "$maintainer_mode" = "yes"; then
4800 # Make empty files to contain the specs and options for each language.
4801 # Then add #include lines to for a compiler that has specs and/or options.
4807 # These (without "all_") are set in each config-lang.in.
4808 # `language' must be a single word so is spelled singularly.
4811 all_outputs='Makefile'
4812 # List of language makefile fragments.
4814 # Additional files for gengtype
4815 all_gtfiles="$target_gtfiles"
4817 # These are the languages that are set in --enable-languages,
4818 # and are available in the GCC tree.
4819 all_selected_languages=
4821 # Add the language fragments.
4822 # Languages are added via two mechanisms. Some information must be
4823 # recorded in makefile variables, these are defined in config-lang.in.
4824 # We accumulate them and plug them into the main Makefile.
4825 # The other mechanism is a set of hooks for each of the main targets
4826 # like `clean', `install', etc.
4828 language_hooks="Make-hooks"
4830 for lang in ${srcdir}/*/config-lang.in
4833 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4835 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4836 if test "x$lang_alias" = x
4838 echo "$lang doesn't set \$language." 1>&2
4841 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4842 subdirs="$subdirs $subdir"
4844 # $gcc_subdir is where the gcc integration files are to be found
4845 # for a language, both for internal compiler purposes (compiler
4846 # sources implementing front-end to GCC tree converters), and for
4847 # build infrastructure purposes (Make-lang.in, etc.)
4849 # This will be <subdir> (relative to $srcdir) if a line like
4850 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4851 # is found in <langdir>/config-lang.in, and will remain <langdir>
4854 # Except for the language alias (fetched above), the regular
4855 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4856 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4857 # only this and the language alias.
4859 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4860 if [ "$gcc_subdir" = "" ]; then
4861 gcc_subdir="$subdir"
4864 case ",$enable_languages," in
4866 all_selected_languages="$all_selected_languages $lang_alias"
4867 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4868 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4880 . ${srcdir}/$gcc_subdir/config-lang.in
4881 if test "x$language" = x
4883 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4888 case ",$enable_languages," in
4891 for i in $subdir_requires; do
4892 test -f "${srcdir}/$i/config-lang.in" && continue
4900 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4901 if test -f $srcdir/$gcc_subdir/lang.opt; then
4902 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4903 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4905 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4906 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4908 all_languages="$all_languages $language"
4909 all_compilers="$all_compilers $compilers"
4910 all_outputs="$all_outputs $outputs"
4911 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4912 case ",$enable_languages," in
4914 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4916 AC_SUBST(enable_lto)
4923 for language in $all_selected_languages
4925 check_languages="$check_languages check-$language"
4928 # We link each language in with a set of hooks, reached indirectly via
4929 # lang.${target}. Only do so for selected languages.
4933 target_list="all.cross start.encap rest.encap tags \
4934 install-common install-man install-info install-pdf install-html dvi \
4935 pdf html uninstall info man srcextra srcman srcinfo \
4936 mostlyclean clean distclean maintainer-clean install-plugin"
4938 for t in $target_list
4941 for lang in $all_selected_languages
4945 echo "lang.$t: $x" >> Make-hooks
4949 # Option include files
4952 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4953 option_includes="option-includes.mk"
4954 AC_SUBST_FILE(option_includes)
4962 echo "dir ." > .gdbinit
4963 echo "dir ${srcdir}" >> .gdbinit
4964 if test x$gdb_needs_out_file_path = xyes
4966 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4968 if test "x$subdirs" != x; then
4971 echo "dir ${srcdir}/$s" >> .gdbinit
4974 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4976 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4977 AC_SUBST(gcc_tooldir)
4980 # Find a directory in which to install a shared libgcc.
4982 AC_ARG_ENABLE(version-specific-runtime-libs,
4983 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
4984 [specify that runtime libraries should be
4985 installed in a compiler-specific directory])])
4987 # Substitute configuration variables
4990 AC_SUBST(all_compilers)
4991 AC_SUBST(all_gtfiles)
4992 AC_SUBST(all_lang_makefrags)
4993 AC_SUBST(all_languages)
4994 AC_SUBST(all_selected_languages)
4995 AC_SUBST(build_exeext)
4996 AC_SUBST(build_install_headers_dir)
4997 AC_SUBST(build_xm_file_list)
4998 AC_SUBST(build_xm_include_list)
4999 AC_SUBST(build_xm_defines)
5000 AC_SUBST(build_file_translate)
5001 AC_SUBST(check_languages)
5002 AC_SUBST(cpp_install_dir)
5003 AC_SUBST(xmake_file)
5004 AC_SUBST(tmake_file)
5005 AC_SUBST(TM_ENDIAN_CONFIG)
5006 AC_SUBST(TM_MULTILIB_CONFIG)
5007 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5008 AC_SUBST(extra_gcc_objs)
5009 AC_SUBST(user_headers_inc_next_pre)
5010 AC_SUBST(user_headers_inc_next_post)
5011 AC_SUBST(extra_headers_list)
5012 AC_SUBST(extra_objs)
5013 AC_SUBST(extra_programs)
5014 AC_SUBST(float_h_file)
5015 AC_SUBST(gcc_config_arguments)
5016 AC_SUBST(gcc_gxx_include_dir)
5017 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5018 AC_SUBST(host_exeext)
5019 AC_SUBST(host_xm_file_list)
5020 AC_SUBST(host_xm_include_list)
5021 AC_SUBST(host_xm_defines)
5022 AC_SUBST(out_host_hook_obj)
5024 AC_SUBST(lang_opt_files)
5025 AC_SUBST(lang_specs_files)
5026 AC_SUBST(lang_tree_files)
5027 AC_SUBST(local_prefix)
5029 AC_SUBST(objc_boehm_gc)
5031 AC_SUBST(out_object_file)
5032 AC_SUBST(common_out_file)
5033 AC_SUBST(common_out_object_file)
5034 AC_SUBST(tm_file_list)
5035 AC_SUBST(tm_include_list)
5036 AC_SUBST(tm_defines)
5037 AC_SUBST(tm_p_file_list)
5038 AC_SUBST(tm_p_include_list)
5039 AC_SUBST(xm_file_list)
5040 AC_SUBST(xm_include_list)
5041 AC_SUBST(xm_defines)
5042 AC_SUBST(use_gcc_stdint)
5043 AC_SUBST(c_target_objs)
5044 AC_SUBST(cxx_target_objs)
5045 AC_SUBST(fortran_target_objs)
5046 AC_SUBST(target_cpu_default)
5048 AC_SUBST_FILE(language_hooks)
5051 if test x${build} = x${host} ; then
5052 if test x${host} = x${target} ; then
5053 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5055 echo "Links are now set up to build a cross-compiler" 1>&2
5056 echo " from ${host} to ${target}." 1>&2
5059 if test x${host} = x${target} ; then
5060 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5061 echo " for ${target}." 1>&2
5063 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5064 echo " from ${host} to ${target}." 1>&2
5068 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5069 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5071 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5072 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5074 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5075 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5076 if test "x${CLOOGLIBS}" != "x" ; then
5077 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5080 # Check for plugin support
5081 AC_ARG_ENABLE(plugin,
5082 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5083 enable_plugin=$enableval,
5084 enable_plugin=yes; default_plugin=yes)
5090 if test x$build = x$host; then
5091 export_sym_check="nm${exeext} -g"
5092 elif test x$host = x$target; then
5093 export_sym_check="$gcc_cv_nm -g"
5099 if test x$build = x$host; then
5100 export_sym_check="objdump${exeext} -T"
5101 elif test x$host = x$target; then
5102 export_sym_check="$gcc_cv_objdump -T"
5109 if test x"$enable_plugin" = x"yes"; then
5111 AC_MSG_CHECKING([for exported symbols])
5112 if test "x$export_sym_check" != x; then
5113 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5114 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
5115 if $export_sym_check conftest | grep foobar > /dev/null; then
5116 : # No need to use a flag
5117 AC_MSG_RESULT([yes])
5119 AC_MSG_RESULT([yes])
5120 AC_MSG_CHECKING([for -rdynamic])
5121 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
5122 if $export_sym_check conftest | grep foobar > /dev/null; then
5124 pluginlibs="-rdynamic"
5129 AC_MSG_RESULT([$plugin_rdynamic])
5132 AC_MSG_RESULT([unable to check])
5137 AC_SEARCH_LIBS([dlopen], [dl])
5138 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5139 pluginlibs="$pluginlibs -ldl"
5143 # Check that we can build shared objects with -fPIC -shared
5144 saved_LDFLAGS="$LDFLAGS"
5145 saved_CFLAGS="$CFLAGS"
5148 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5149 CFLAGS="$CFLAGS -fPIC"
5150 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5153 CFLAGS="$CFLAGS -fPIC"
5154 LDFLAGS="$LDFLAGS -fPIC -shared"
5157 AC_MSG_CHECKING([for -fPIC -shared])
5159 [extern int X;],[return X == 0;],
5160 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5161 [AC_MSG_RESULT([no]); have_pic_shared=no])
5162 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5166 LDFLAGS="$saved_LDFLAGS"
5167 CFLAGS="$saved_CFLAGS"
5169 # If plugin support had been requested but not available, fail.
5170 if test x"$enable_plugin" = x"no" ; then
5171 if test x"$default_plugin" != x"yes"; then
5173 Building GCC with plugin support requires a host that supports
5174 -fPIC, -shared, -ldl and -rdynamic.])
5179 AC_SUBST(pluginlibs)
5180 AC_SUBST(enable_plugin)
5181 if test x"$enable_plugin" = x"yes"; then
5182 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5186 AC_ARG_ENABLE(libquadmath-support,
5187 [AS_HELP_STRING([--disable-libquadmath-support],
5188 [disable libquadmath support for Fortran])],
5189 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5190 ENABLE_LIBQUADMATH_SUPPORT=yes)
5191 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5192 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5193 [Define to 1 to enable libquadmath support])
5197 # Specify what hash style to use by default.
5198 AC_ARG_WITH([linker-hash-style],
5199 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5200 [specify the linker hash style])],
5201 [case x"$withval" in
5203 LINKER_HASH_STYLE=sysv
5206 LINKER_HASH_STYLE=gnu
5209 LINKER_HASH_STYLE=both
5212 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5215 [LINKER_HASH_STYLE=''])
5216 if test x"${LINKER_HASH_STYLE}" != x; then
5217 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5218 [The linker hash style])
5221 # Configure the subdirectories
5222 # AC_CONFIG_SUBDIRS($subdirs)
5224 # Create the Makefile
5225 # and configure language subdirectories
5226 AC_CONFIG_FILES($all_outputs)
5228 AC_CONFIG_COMMANDS([default],
5230 case ${CONFIG_HEADERS} in
5231 *auto-host.h:config.in*)
5234 # Make sure all the subdirs exist.
5235 for d in $subdirs doc build common c-family
5237 test -d $d || mkdir $d
5240 [subdirs='$subdirs'])