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 AC_ARG_WITH(plugin-ld,
2007 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2008 [if test x"$withval" != x; then
2009 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2010 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2012 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2013 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2015 # Check to see if we are using gold instead of ld
2016 AC_MSG_CHECKING(whether we are using gold)
2018 if test x$gcc_cv_ld != x; then
2019 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2020 | grep "GNU gold" > /dev/null; then
2024 AC_MSG_RESULT($ld_is_gold)
2026 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2027 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2028 case "$ORIGINAL_LD_FOR_TARGET" in
2029 ./collect-ld | ./collect-ld$build_exeext) ;;
2030 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2033 AC_MSG_CHECKING(what linker to use)
2034 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2035 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2036 # Single tree build which includes ld. We want to prefer it
2037 # over whatever linker top-level may have detected, since
2038 # we'll use what we're building after installation anyway.
2039 AC_MSG_RESULT(newly built ld)
2041 in_tree_ld_is_elf=no
2042 if (grep 'EMUL = .*elf' ../ld/Makefile \
2043 || grep 'EMUL = .*linux' ../ld/Makefile \
2044 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2045 in_tree_ld_is_elf=yes
2046 elif test "$ld_is_gold" = yes; then
2047 in_tree_ld_is_elf=yes
2049 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
2052 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2053 if test x$gcc_cv_gld_version != x; then
2057 case $gcc_cv_gld_version in
2060 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2063 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2064 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2067 AC_MSG_RESULT($gcc_cv_ld)
2071 # Figure out what nm we will be using.
2072 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2073 AS_VAR_SET_IF(gcc_cv_nm,, [
2074 if test -f $gcc_cv_binutils_srcdir/configure.in \
2075 && test -f ../binutils/Makefile \
2076 && test x$build = x$host; then
2077 gcc_cv_nm=../binutils/nm-new$build_exeext
2078 elif test -x nm$build_exeext; then
2079 gcc_cv_nm=./nm$build_exeext
2080 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2081 gcc_cv_nm="$NM_FOR_TARGET"
2083 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2086 AC_MSG_CHECKING(what nm to use)
2087 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2088 # Single tree build which includes binutils.
2089 AC_MSG_RESULT(newly built nm)
2092 AC_MSG_RESULT($gcc_cv_nm)
2096 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2097 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2098 case "$ORIGINAL_NM_FOR_TARGET" in
2099 ./nm | ./nm$build_exeext) ;;
2100 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2104 # Figure out what objdump we will be using.
2105 AS_VAR_SET_IF(gcc_cv_objdump,, [
2106 if test -f $gcc_cv_binutils_srcdir/configure.in \
2107 && test -f ../binutils/Makefile \
2108 && test x$build = x$host; then
2109 # Single tree build which includes binutils.
2110 gcc_cv_objdump=../binutils/objdump$build_exeext
2111 elif test -x objdump$build_exeext; then
2112 gcc_cv_objdump=./objdump$build_exeext
2113 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2114 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2116 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2119 AC_MSG_CHECKING(what objdump to use)
2120 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2121 # Single tree build which includes binutils.
2122 AC_MSG_RESULT(newly built objdump)
2123 elif test x$gcc_cv_objdump = x; then
2124 AC_MSG_RESULT(not found)
2126 AC_MSG_RESULT($gcc_cv_objdump)
2129 # Figure out what readelf we will be using.
2130 AS_VAR_SET_IF(gcc_cv_readelf,, [
2131 if test -f $gcc_cv_binutils_srcdir/configure.in \
2132 && test -f ../binutils/Makefile \
2133 && test x$build = x$host; then
2134 # Single tree build which includes binutils.
2135 gcc_cv_readelf=../binutils/readelf$build_exeext
2136 elif test -x readelf$build_exeext; then
2137 gcc_cv_readelf=./readelf$build_exeext
2139 AC_PATH_PROG(gcc_cv_readelf, readelf)
2142 AC_MSG_CHECKING(what readelf to use)
2143 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2144 # Single tree build which includes binutils.
2145 AC_MSG_RESULT(newly built readelf)
2146 elif test x$gcc_cv_readelf = x; then
2147 AC_MSG_RESULT(not found)
2149 AC_MSG_RESULT($gcc_cv_readelf)
2152 # Figure out what assembler alignment features are present.
2153 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2157 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2158 [Define if your assembler supports .balign and .p2align.])])
2160 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2163 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2164 [Define if your assembler supports specifying the maximum number
2165 of bytes to skip when using the GAS .p2align command.])])
2167 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2170 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2171 [Define if your assembler supports .literal16.])])
2173 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2175 [conftest_label1: .word 0
2177 conftest_label2: .word 0
2179 [if test x$gcc_cv_nm != x; then
2180 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2181 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2182 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2184 else gcc_cv_as_subsection_m1=yes
2186 rm -f conftest.nm1 conftest.nm2
2188 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2189 [Define if your assembler supports .subsection and .subsection -1 starts
2190 emitting at the beginning of your section.])])
2192 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2195 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2197 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2199 [ .weakref foobar, barfnot],,
2200 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2202 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2205 .NSUBSPA $CODE$,COMDAT],,
2206 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2208 # .hidden needs to be supported in both the assembler and the linker,
2209 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2210 # This is irritatingly difficult to feature test for; we have to check the
2211 # date string after the version number. If we've got an in-tree
2212 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2214 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2215 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2219 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2220 # STV_HIDDEN, so disable .hidden support if so.
2222 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2223 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2224 cat > conftest.s <<EOF
2231 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2232 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2233 grep '\.hidden default' > /dev/null; then
2236 gcc_cv_as_hidden=yes
2239 # Assume bug is present if objdump is missing.
2244 gcc_cv_as_hidden=yes
2249 # Darwin as has some visibility support, though with a different syntax.
2250 gcc_cv_as_hidden=yes
2254 # gnu_indirect_function type is an extension proposed at
2255 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2256 # selection of function implementation
2257 AC_ARG_ENABLE(gnu-indirect-function,
2258 [AS_HELP_STRING([--enable-gnu-indirect-function],
2259 [enable the use of the @gnu_indirect_function to glibc systems])],
2260 [case $enable_gnu_indirect_function in
2262 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2263 Valid choices are 'yes' and 'no'.]) ;;
2265 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2266 if test x$enable_gnu_indirect_function = xyes; then
2267 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2268 [Define if your system supports gnu indirect functions.])
2272 if test $in_tree_ld != yes ; then
2273 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2274 if echo "$ld_ver" | grep GNU > /dev/null; then
2275 if test x"$ld_is_gold" = xyes; then
2276 # GNU gold --version looks like this:
2278 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2280 # We extract the binutils version which is more familiar and specific
2281 # than the gold version.
2282 ld_vers=`echo $ld_ver | sed -n \
2283 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2285 # GNU ld --version looks like this:
2287 # GNU ld (GNU Binutils) 2.21.51.20110225
2288 ld_vers=`echo $ld_ver | sed -n \
2289 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2291 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2292 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2293 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2294 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2298 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2301 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2302 # /usr/ccs/bin/ld has been configured.
2303 ld_ver=`$gcc_cv_ld -V 2>&1`
2304 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2305 ld_vers=`echo $ld_ver | sed -n \
2306 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2307 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2308 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2316 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2317 [[if test $in_tree_ld = yes ; then
2319 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2320 && test $in_tree_ld_is_elf = yes; then
2321 gcc_cv_ld_hidden=yes
2324 gcc_cv_ld_hidden=yes
2325 if test x"$ld_is_gold" = xyes; then
2327 elif echo "$ld_ver" | grep GNU > /dev/null; then
2329 mmix-knuth-mmixware)
2330 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2334 if test 0"$ld_date" -lt 20020404; then
2335 if test -n "$ld_date"; then
2336 # If there was date string, but was earlier than 2002-04-04, fail
2338 elif test -z "$ld_vers"; then
2339 # If there was no date string nor ld version number, something is wrong
2342 test -z "$ld_vers_patch" && ld_vers_patch=0
2343 if test "$ld_vers_major" -lt 2; then
2345 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2346 gcc_cv_ld_hidden="no"
2347 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2355 # Darwin ld has some visibility support.
2356 gcc_cv_ld_hidden=yes
2358 hppa64*-*-hpux* | ia64*-*-hpux*)
2359 gcc_cv_ld_hidden=yes
2361 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2362 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2363 # .symbolic was only added in Solaris 9 12/02.
2364 gcc_cv_ld_hidden=yes
2372 libgcc_visibility=no
2373 AC_SUBST(libgcc_visibility)
2374 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2375 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2376 libgcc_visibility=yes
2377 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2378 [Define if your assembler and linker support .hidden.])
2381 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2382 gcc_cv_ld_ro_rw_mix=unknown
2383 if test $in_tree_ld = yes ; then
2384 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2385 && test $in_tree_ld_is_elf = yes; then
2386 gcc_cv_ld_ro_rw_mix=read-write
2388 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2389 echo '.section myfoosect, "a"' > conftest1.s
2390 echo '.section myfoosect, "aw"' > conftest2.s
2391 echo '.byte 1' >> conftest2.s
2392 echo '.section myfoosect, "a"' > conftest3.s
2393 echo '.byte 0' >> conftest3.s
2394 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2395 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2396 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2397 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2398 conftest2.o conftest3.o > /dev/null 2>&1; then
2399 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2400 | sed -e '/myfoosect/!d' -e N`
2401 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2402 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2403 gcc_cv_ld_ro_rw_mix=read-only
2405 gcc_cv_ld_ro_rw_mix=read-write
2410 rm -f conftest.* conftest[123].*
2413 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2414 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2415 [Define if your linker links a mix of read-only
2416 and read-write sections into a read-write section.])
2418 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2420 gcc_AC_INITFINI_ARRAY
2422 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2423 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2431 [[# GAS versions before 2.11 do not support uleb128,
2432 # despite appearing to.
2433 # ??? There exists an elf-specific test that will crash
2434 # the assembler. Perhaps it's better to figure out whether
2435 # arbitrary sections are supported and try the test.
2436 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2437 if echo "$as_ver" | grep GNU > /dev/null; then
2438 as_vers=`echo $as_ver | sed -n \
2439 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2440 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2441 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2442 if test $as_major -eq 2 && test $as_minor -lt 11
2444 else gcc_cv_as_leb128=yes
2447 [AC_DEFINE(HAVE_AS_LEB128, 1,
2448 [Define if your assembler supports .sleb128 and .uleb128.])])
2450 # Check if we have assembler support for unwind directives.
2451 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2458 .cfi_escape 1, 2, 3, 4, 5
2462 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2463 # read-only and read-write sections, we need to make sure that the
2464 # assembler used emits read-write .eh_frame sections.
2465 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2466 if test "x$gcc_cv_objdump" != x; then
2467 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2468 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2469 gcc_cv_as_cfi_directive=no
2472 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2473 # On Solaris/x86, make sure that GCC and gas agree on using
2474 # read-only .eh_frame sections for 64-bit.
2475 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2476 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2477 sed -e /.eh_frame/!d -e N | \
2478 grep READONLY > /dev/null; then
2479 gcc_cv_as_cfi_directive=yes
2481 gcc_cv_as_cfi_directive=no
2485 gcc_cv_as_cfi_directive=yes
2490 # no objdump, err on the side of caution
2491 gcc_cv_as_cfi_directive=no
2494 gcc_cv_as_cfi_directive=yes
2498 gcc_cv_as_cfi_directive=yes
2501 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2502 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2506 .cfi_adjust_cfa_offset 64
2508 .cfi_adjust_cfa_offset 128
2511 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2512 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2513 gcc_cv_as_cfi_advance_working=yes
2517 # no objdump, err on the side of caution
2518 gcc_cv_as_cfi_advance_working=no
2520 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2521 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2522 [`if test $gcc_cv_as_cfi_directive = yes \
2523 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2524 [Define 0/1 if your assembler supports CFI directives.])
2526 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2527 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2528 gcc_cv_as_cfi_personality_directive, ,,
2531 .cfi_personality 0, symbol
2533 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2534 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2535 then echo 1; else echo 0; fi`],
2536 [Define 0/1 if your assembler supports .cfi_personality.])
2538 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2539 gcc_cv_as_cfi_sections_directive, ,,
2541 .cfi_sections .debug_frame, .eh_frame
2545 win32 | pe | cygwin* | mingw32* | uwin*)
2546 # Need to check that we generated the correct relocation for the
2547 # .debug_frame section. This was fixed for binutils 2.21.
2548 gcc_cv_as_cfi_sections_directive=no
2549 if test "x$gcc_cv_objdump" != x; then
2550 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2551 grep secrel > /dev/null; then
2552 gcc_cv_as_cfi_sections_directive=yes
2557 gcc_cv_as_cfi_sections_directive=yes
2560 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2561 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2562 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2563 then echo 1; else echo 0; fi`],
2564 [Define 0/1 if your assembler supports .cfi_sections.])
2566 # GAS versions up to and including 2.11.0 may mis-optimize
2568 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2576 .section .eh_frame,"aw",@progbits
2578 .4byte .LECIE1-.LSCIE1
2592 .4byte .LEFDE1-.LASFDE1
2594 .4byte .LASFDE1-__FRAME_BEGIN__
2602 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2603 cat > conftest.lit <<EOF
2604 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2605 0010 01000000 12000000 18000000 00000000 ................
2606 0020 08000000 04080000 0044 .........D @&t@
2608 cat > conftest.big <<EOF
2609 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2610 0010 00000001 00000012 00000018 00000000 ................
2611 0020 00000008 04000000 0844 .........D @&t@
2613 # If the assembler didn't choke, and we can objdump,
2614 # and we got the correct data, then succeed.
2615 # The text in the here-document typically retains its unix-style line
2616 # endings, while the output of objdump will use host line endings.
2617 # Therefore, use diff -b for the comparisons.
2618 if test x$gcc_cv_objdump != x \
2619 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2620 | tail -3 > conftest.got \
2621 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2622 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2624 gcc_cv_as_eh_frame=yes
2625 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2626 gcc_cv_as_eh_frame=buggy
2628 # Uh oh, what do we do now?
2629 gcc_cv_as_eh_frame=no
2632 if test $gcc_cv_as_eh_frame = buggy; then
2633 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2634 [Define if your assembler mis-optimizes .eh_frame data.])
2637 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2638 [elf,2,12,0], [--fatal-warnings],
2639 [.section .rodata.str, "aMS", @progbits, 1])
2640 if test $gcc_cv_as_shf_merge = no; then
2641 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2642 [elf,2,12,0], [--fatal-warnings],
2643 [.section .rodata.str, "aMS", %progbits, 1])
2645 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2646 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2647 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2649 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2650 gcc_cv_as_comdat_group,
2651 [elf,2,16,0], [--fatal-warnings],
2652 [.section .text,"axG",@progbits,.foo,comdat])
2653 if test $gcc_cv_as_comdat_group = yes; then
2654 gcc_cv_as_comdat_group_percent=no
2655 gcc_cv_as_comdat_group_group=no
2657 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2658 gcc_cv_as_comdat_group_percent,
2659 [elf,2,16,0], [--fatal-warnings],
2660 [.section .text,"axG",%progbits,.foo,comdat])
2661 if test $gcc_cv_as_comdat_group_percent = yes; then
2662 gcc_cv_as_comdat_group_group=no
2664 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2665 gcc_cv_as_comdat_group_group=no
2668 # Sun as uses a completely different syntax.
2673 .group foo,".text%foo",#comdat
2674 .section ".text%foo", #alloc,#execinstr,#progbits
2679 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2681 .group foo,.text%foo,#comdat
2682 .section .text%foo, "ax", @progbits
2688 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2689 gcc_cv_as_comdat_group_group,
2695 if test x"$ld_is_gold" = xyes; then
2697 elif test $in_tree_ld = yes ; then
2699 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2700 && test $in_tree_ld_is_elf = yes; then
2703 elif echo "$ld_ver" | grep GNU > /dev/null; then
2705 if test 0"$ld_date" -lt 20050308; then
2706 if test -n "$ld_date"; then
2707 # If there was date string, but was earlier than 2005-03-08, fail
2709 elif test "$ld_vers_major" -lt 2; then
2711 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2718 *-*-solaris2.1[1-9]*)
2720 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2721 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2724 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2725 # least ld version 1.2267.
2726 if test "$ld_vers_major" -gt 1; then
2728 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2730 elif test "$ld_vers_minor" -ge 2267; then
2735 # Assume linkers other than GNU ld don't support COMDAT group.
2741 # Allow overriding the automatic COMDAT group tests above.
2742 AC_ARG_ENABLE(comdat,
2743 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2744 [comdat_group="$enable_comdat"])
2745 if test $comdat_group = no; then
2746 gcc_cv_as_comdat_group=no
2747 gcc_cv_as_comdat_group_percent=no
2748 gcc_cv_as_comdat_group_group=no
2750 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2751 [`if test $gcc_cv_as_comdat_group = yes \
2752 || test $gcc_cv_as_comdat_group_percent = yes \
2753 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2754 [Define 0/1 if your assembler and linker support COMDAT groups.])
2756 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2757 gcc_cv_as_discriminator,
2761 .loc 1 1 0 discriminator 1],,
2762 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2763 [Define if your assembler supports the .loc discriminator sub-directive.])])
2765 # Thread-local storage - the check is heavily parameterized.
2774 .section ".tdata","awT",@progbits
2777 ldq $27,__tls_get_addr($29) !literal!1
2778 lda $16,foo($29) !tlsgd!1
2779 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2780 ldq $27,__tls_get_addr($29) !literal!2
2781 lda $16,foo($29) !tlsldm!2
2782 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2783 ldq $1,foo($29) !gotdtprel
2784 ldah $2,foo($29) !dtprelhi
2785 lda $3,foo($2) !dtprello
2786 lda $4,foo($29) !dtprel
2787 ldq $1,foo($29) !gottprel
2788 ldah $2,foo($29) !tprelhi
2789 lda $3,foo($2) !tprello
2790 lda $4,foo($29) !tprel'
2793 tls_as_opt=--fatal-warnings
2795 cris-*-*|crisv32-*-*)
2797 .section ".tdata","awT",@progbits
2804 tls_as_opt=--fatal-warnings
2808 .section ".tdata","awT",@progbits
2820 .section ".tdata","awT",@progbits
2824 addil LT%foo-$tls_gdidx$,gp
2825 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2828 addil LT%foo-$tls_ldidx$,gp
2830 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2831 addil LR%foo-$tls_dtpoff$,%ret0
2832 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2834 addil LT%foo-$tls_ieoff$,gp
2835 ldw RT%foo-$tls_ieoff$(%r1),%t2
2838 addil LR%foo-$tls_leoff$,%t1
2839 ldo RR%foo-$tls_leoff$(%r1),%t2'
2842 tls_as_opt=--fatal-warnings
2846 .section ".tdata","awT",%progbits
2857 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2859 i[34567]86-*-solaris2.*)
2861 tga_func=___tls_get_addr
2863 x86_64-*-solaris2.1[0-9]*)
2865 tga_func=__tls_get_addr
2871 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2873 .section .tdata,"awt",@progbits'
2877 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2878 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2882 .section ".tdata","awT",@progbits'
2885 tls_as_opt="--fatal-warnings"
2887 conftest_s="$conftest_s
2891 leal foo@tlsgd(,%ebx,1), %eax
2892 leal foo@tlsldm(%ebx), %eax
2893 leal foo@dtpoff(%eax), %edx
2894 movl foo@gottpoff(%ebx), %eax
2895 subl foo@gottpoff(%ebx), %eax
2896 addl foo@gotntpoff(%ebx), %eax
2897 movl foo@indntpoff, %eax
2898 movl \$foo@tpoff, %eax
2899 subl \$foo@tpoff, %eax
2900 leal foo@ntpoff(%ecx), %eax"
2904 .section ".tdata","awT",@progbits
2908 leaq foo@TLSGD(%rip), %rdi
2909 leaq foo@TLSLD(%rip), %rdi
2910 leaq foo@DTPOFF(%rax), %rdx
2911 movq foo@GOTTPOFF(%rip), %rax
2912 movq $foo@TPOFF, %rax'
2915 tls_as_opt=--fatal-warnings
2919 .section ".tdata","awT",@progbits
2922 addl r16 = @ltoff(@dtpmod(foo#)), gp
2923 addl r17 = @ltoff(@dtprel(foo#)), gp
2924 addl r18 = @ltoff(@tprel(foo#)), gp
2925 addl r19 = @dtprel(foo#), gp
2926 adds r21 = @dtprel(foo#), r13
2927 movl r23 = @dtprel(foo#)
2928 addl r20 = @tprel(foo#), gp
2929 adds r22 = @tprel(foo#), r13
2930 movl r24 = @tprel(foo#)'
2933 tls_as_opt=--fatal-warnings
2937 .section .tdata,"awT",@progbits
2941 addiu $4, $28, %tlsgd(x)
2942 addiu $4, $28, %tlsldm(x)
2943 lui $4, %dtprel_hi(x)
2944 addiu $4, $4, %dtprel_lo(x)
2945 lw $4, %gottprel(x)($28)
2946 lui $4, %tprel_hi(x)
2947 addiu $4, $4, %tprel_lo(x)'
2950 tls_as_opt='-32 --fatal-warnings'
2954 .section .tdata,"awT",@progbits
2959 move.l x@TLSGD(%a5),%a0
2960 move.l x@TLSLDM(%a5),%a0
2961 move.l x@TLSLDO(%a5),%a0
2962 move.l x@TLSIE(%a5),%a0
2963 move.l x@TLSLE(%a5),%a0'
2966 tls_as_opt='--fatal-warnings'
2970 .section ".tdata","awT",%progbits
2974 add x0, x0, #:tlsgd_lo12:x
2979 tls_as_opt='--fatal-warnings'
2983 .section ".tdata","awT",@progbits
2991 addi 3,31,ld0@got@tlsgd
2993 addi 3,31,x1@got@tlsld
2996 addis 9,3,x2@dtprel@ha
2997 addi 9,9,x2@dtprel@l
2998 lwz 9,x3@got@tprel(31)
3001 addis 9,2,x2@tprel@ha
3002 addi 9,9,x2@tprel@l'
3005 tls_as_opt="-a32 --fatal-warnings"
3009 .section ".tdata","awT",@progbits
3017 addi 3,2,ld0@got@tlsgd
3023 addi 3,2,x1@got@tlsld
3029 addis 9,3,x2@dtprel@ha
3030 addi 9,9,x2@dtprel@l
3033 ld 9,x3@got@dtprel(2)
3039 tls_as_opt="-a64 --fatal-warnings"
3043 .section ".tdata","awT",@progbits
3052 l %r1,foo@GOTNTPOFF(%r12)
3053 l %r1,0(%r1):tls_load:foo
3054 bas %r14,0(%r1,%r13):tls_gdcall:foo
3055 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3058 tls_as_opt="-m31 --fatal-warnings"
3062 .section ".tdata","awT",@progbits
3070 lg %r1,foo@GOTNTPOFF(%r12)
3071 larl %r1,foo@INDNTPOFF
3072 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3073 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3076 tls_as_opt="-m64 -Aesame --fatal-warnings"
3078 sh-*-* | sh[34]-*-*)
3080 .section ".tdata","awT",@progbits
3090 tls_as_opt=--fatal-warnings
3094 sparc*-sun-solaris2.*)
3096 tga_func=__tls_get_addr
3102 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3104 .section ".tdata",#alloc,#write,#tls'
3109 .section ".tdata","awT",@progbits'
3112 tls_as_opt="-32 --fatal-warnings"
3114 conftest_s="$conftest_s
3117 sethi %tgd_hi22(foo), %o0
3118 add %o0, %tgd_lo10(foo), %o1
3119 add %l7, %o1, %o0, %tgd_add(foo)
3120 call __tls_get_addr, %tgd_call(foo)
3121 sethi %tldm_hi22(foo), %l1
3122 add %l1, %tldm_lo10(foo), %l2
3123 add %l7, %l2, %o0, %tldm_add(foo)
3124 call __tls_get_addr, %tldm_call(foo)
3125 sethi %tldo_hix22(foo), %l3
3126 xor %l3, %tldo_lox10(foo), %l4
3127 add %o0, %l4, %l5, %tldo_add(foo)
3128 sethi %tie_hi22(foo), %o3
3129 add %o3, %tie_lo10(foo), %o3
3130 ld [%l7 + %o3], %o2, %tie_ld(foo)
3131 add %g7, %o2, %o4, %tie_add(foo)
3132 sethi %tle_hix22(foo), %l1
3133 xor %l1, %tle_lox10(foo), %o5
3134 ld [%g7 + %o5], %o1"
3138 .section ".tdata","awT",@progbits
3141 addli r0, zero, tls_gd(foo)
3142 auli r0, zero, tls_gd_ha16(foo)
3143 addli r0, r0, tls_gd_lo16(foo)
3145 addli r0, zero, tls_ie(foo)
3146 auli r0, r0, tls_ie_ha16(foo)
3147 addli r0, r0, tls_ie_lo16(foo)'
3150 tls_as_opt="--fatal-warnings"
3154 .section ".tdata","awT",@progbits
3157 shl16insli r0, zero, hw0_last_tls_gd(foo)
3158 shl16insli r0, zero, hw1_last_tls_gd(foo)
3159 shl16insli r0, r0, hw0_tls_gd(foo)
3161 shl16insli r0, zero, hw1_last_tls_ie(foo)
3162 shl16insli r0, r0, hw0_tls_ie(foo)'
3165 tls_as_opt="--fatal-warnings"
3169 .section ".tdata","awT",@progbits
3172 movi a8, foo@TLSFUNC
3173 movi a10, foo@TLSARG
3174 callx8.tls a8, foo@TLSCALL'
3181 if test "x$enable_tls" = xno ; then
3182 : # TLS explicitly disabled.
3183 elif test "x$enable_tls" = xyes ; then
3184 set_have_as_tls=yes # TLS explicitly enabled.
3185 elif test -z "$tls_first_major"; then
3186 : # If we don't have a check, assume no support.
3188 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3189 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3190 [set_have_as_tls=yes])
3193 # TLS was introduced in the Solaris 9 FCS release. Support for GNU-style
3194 # TLS on x86 was only introduced in Solaris 9 4/04, replacing the earlier
3195 # Sun style that Sun ld and GCC don't support any longer.
3197 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3199 # Check ld and ld.so.1 TLS support.
3200 if echo "$ld_ver" | grep GNU > /dev/null; then
3201 # Assume all interesting versions of GNU ld have TLS support.
3202 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3206 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3208 min_tls_ld_vers_minor=374
3210 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3211 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3212 min_tls_ld_vers_minor=343
3215 if test "$ld_vers_major" -gt 1 || \
3216 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3222 AC_MSG_RESULT($ld_tls_support)
3225 save_LDFLAGS="$LDFLAGS"
3229 AC_MSG_CHECKING(library containing $tga_func)
3230 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3231 # (32-bit x86) only lived in libthread, so check for that. Keep
3232 # set_have_as_tls if found, disable if not.
3233 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3234 # Clear LIBS if we cannot support TLS.
3235 if test $set_have_as_tls = no; then
3238 # Always define LIB_TLS_SPEC, even without TLS support.
3239 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3240 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3241 AC_MSG_RESULT($LIBS)
3244 LDFLAGS="$save_LDFLAGS"
3247 if test $set_have_as_tls = yes ; then
3248 AC_DEFINE(HAVE_AS_TLS, 1,
3249 [Define if your assembler and linker support thread-local storage.])
3252 # Target-specific assembler checks.
3254 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3255 gcc_cv_ld_static_dynamic=no
3256 gcc_cv_ld_static_option='-Bstatic'
3257 gcc_cv_ld_dynamic_option='-Bdynamic'
3258 if test $in_tree_ld = yes ; then
3259 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3260 gcc_cv_ld_static_dynamic=yes
3262 elif test x$gcc_cv_ld != x; then
3263 # Check if linker supports -Bstatic/-Bdynamic option
3264 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3265 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3266 gcc_cv_ld_static_dynamic=yes
3269 # HP-UX ld uses -a flags to select between shared and archive.
3271 if test x"$gnu_ld" = xno; then
3272 gcc_cv_ld_static_dynamic=yes
3273 gcc_cv_ld_static_option="-aarchive_shared"
3274 gcc_cv_ld_dynamic_option="-adefault"
3277 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3279 gcc_cv_ld_static_dynamic=yes
3284 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3285 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3286 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3287 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3288 [Define to the linker option to disable use of shared objects.])
3289 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3290 [Define to the linker option to enable use of shared objects.])
3292 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3294 if test x"$demangler_in_ld" = xyes; then
3295 AC_MSG_CHECKING(linker --demangle support)
3296 gcc_cv_ld_demangle=no
3297 if test $in_tree_ld = yes; then
3298 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3299 gcc_cv_ld_demangle=yes
3301 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3302 # Check if the GNU linker supports --demangle option
3303 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3304 gcc_cv_ld_demangle=yes
3307 if test x"$gcc_cv_ld_demangle" = xyes; then
3308 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3309 [Define if your linker supports --demangle option.])
3311 AC_MSG_RESULT($gcc_cv_ld_demangle)
3314 AC_MSG_CHECKING(linker plugin support)
3316 if test -f liblto_plugin.la; then
3317 save_ld_ver="$ld_ver"
3318 save_ld_vers_major="$ld_vers_major"
3319 save_ld_vers_minor="$ld_vers_minor"
3320 save_ld_is_gold="$ld_is_gold"
3324 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3326 # FIXME: ld_is_gold?
3327 ld_vers_major="$gcc_cv_gld_major_version"
3328 ld_vers_minor="$gcc_cv_gld_minor_version"
3330 # Determine plugin linker version.
3331 # FIXME: Partial duplicate from above, generalize.
3333 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3334 if echo "$ld_ver" | grep GNU > /dev/null; then
3335 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3337 ld_vers=`echo $ld_ver | sed -n \
3338 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3340 ld_vers=`echo $ld_ver | sed -n \
3341 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3343 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3344 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3349 # Determine plugin support.
3350 if echo "$ld_ver" | grep GNU > /dev/null; then
3351 # Require GNU ld or gold 2.21+ for plugin support by default.
3352 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3354 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3355 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3360 ld_ver="$save_ld_ver"
3361 ld_vers_major="$save_ld_vers_major"
3362 ld_vers_minor="$save_ld_vers_minor"
3363 ld_is_gold="$save_ld_is_gold"
3365 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3366 [Define to the level of your linker's plugin support.])
3367 AC_MSG_RESULT($gcc_cv_lto_plugin)
3370 # All TARGET_ABI_OSF targets.
3371 alpha*-*-linux* | alpha*-*-*bsd*)
3372 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3373 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3376 extbl $3, $2, $3 !lituse_bytoff!1
3377 ldq $2, a($29) !literal!1
3378 ldq $4, b($29) !literal!2
3379 ldq_u $3, 0($2) !lituse_base!1
3380 ldq $27, f($29) !literal!5
3381 jsr $26, ($27), f !lituse_jsr!5
3382 ldah $29, 0($26) !gpdisp!3
3383 lda $0, c($29) !gprel
3384 ldah $1, d($29) !gprelhigh
3385 lda $1, d($1) !gprellow
3386 lda $29, 0($29) !gpdisp!3],,
3387 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3388 [Define if your assembler supports explicit relocations.])])
3389 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3390 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3393 ldq $27, a($29) !literal!1
3394 jsr $26, ($27), a !lituse_jsrdirect!1],,
3395 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3396 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3400 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3401 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3402 [-no-mul-bug-abort], [.text],,
3403 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3404 [Define if your assembler supports the -no-mul-bug-abort option.])])
3408 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3409 [.register %g2, #scratch],,
3410 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3411 [Define if your assembler supports .register.])])
3413 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3415 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3416 [Define if your assembler supports -relax option.])])
3418 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3419 gcc_cv_as_sparc_gotdata_op,,
3426 sethi %gdop_hix22(foo), %g1
3427 xor %g1, %gdop_lox10(foo), %g1
3428 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3429 [if test x$gcc_cv_ld != x \
3430 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3431 if test x$gcc_cv_objdump != x; then
3432 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3433 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3434 gcc_cv_as_sparc_gotdata_op=no
3436 gcc_cv_as_sparc_gotdata_op=yes
3441 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3442 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3444 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3445 gcc_cv_as_sparc_ua_pcrel,,
3453 .uaword %r_disp32(foo)],
3454 [if test x$gcc_cv_ld != x \
3455 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3456 gcc_cv_as_sparc_ua_pcrel=yes
3459 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3460 [Define if your assembler and linker support unaligned PC relative relocs.])
3462 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3463 gcc_cv_as_sparc_ua_pcrel_hidden,,
3468 .uaword %r_disp32(foo)
3469 .byte 0x32, 0x33, 0x34
3474 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3475 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3476 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3477 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3478 if $gcc_cv_objdump -R conftest 2> /dev/null \
3479 | grep 'DISP32' > /dev/null 2>&1; then
3482 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3486 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3487 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3488 ]) # unaligned pcrel relocs
3490 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3491 gcc_cv_as_sparc_offsetable_lo10,,
3494 or %g1, %lo(ab) + 12, %g1
3495 or %g1, %lo(ab + 12), %g1],
3496 [if test x$gcc_cv_objdump != x \
3497 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3498 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3499 gcc_cv_as_sparc_offsetable_lo10=yes
3501 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3502 [Define if your assembler supports offsetable %lo().])])
3504 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3505 gcc_cv_as_sparc_fmaf,,
3508 .register %g2, #scratch
3509 .register %g3, #scratch
3511 fmaddd %f0, %f2, %f4, %f6
3512 addxccc %g1, %g2, %g3
3513 fsrl32 %f2, %f4, %f8
3514 fnaddd %f10, %f12, %f14],,
3515 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3516 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3520 i[34567]86-*-* | x86_64-*-*)
3524 # Full C++ conformance when using a shared libstdc++-v3 requires some
3525 # support from the Cygwin DLL, which in more recent versions exports
3526 # wrappers to aid in interposing and redirecting operators new, delete,
3527 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3528 # are configuring for a version of Cygwin that exports the wrappers.
3529 if test x$host = x$target; then
3530 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3532 # Can't check presence of libc functions during cross-compile, so
3533 # we just have to assume we're building for an up-to-date target.
3534 gcc_ac_cygwin_dll_wrappers=yes
3536 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3537 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3538 [Define if you want to generate code by default that assumes that the
3539 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3542 cygwin* | pe | mingw32* | interix*)
3543 # Recent binutils allows the three-operand form of ".comm" on PE. This
3544 # definition is used unconditionally to initialise the default state of
3545 # the target option variable that governs usage of the feature.
3546 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3547 [2,19,52],,[.comm foo,1,32])
3548 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3549 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3550 [Define if your assembler supports specifying the alignment
3551 of objects allocated using the GAS .comm command.])
3552 # Used for DWARF 2 in PE
3553 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3554 gcc_cv_as_ix86_pe_secrel32,
3560 [if test x$gcc_cv_ld != x \
3561 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3562 gcc_cv_as_ix86_pe_secrel32=yes
3565 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3566 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3567 # Test if the assembler supports the extended form of the .section
3568 # directive that specifies section alignment. LTO support uses this,
3569 # but normally only after installation, so we warn but don't fail the
3570 # configure if LTO is enabled but the assembler does not support it.
3571 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3572 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3573 if test x$gcc_cv_as_section_has_align != xyes; then
3574 case ",$enable_languages," in
3576 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3580 # Test if the assembler supports the section flag 'e' for specifying
3581 # an excluded section.
3582 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3586 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3587 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3588 [Define if your assembler supports specifying the section flag e.])
3592 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3593 gcc_cv_as_ix86_filds,,,
3594 [filds mem; fists mem],,
3595 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3596 [Define if your assembler uses filds and fists mnemonics.])])
3598 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3599 gcc_cv_as_ix86_fildq,,,
3600 [fildq mem; fistpq mem],,
3601 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3602 [Define if your assembler uses fildq and fistq mnemonics.])])
3604 gcc_GAS_CHECK_FEATURE([cmov syntax],
3605 gcc_cv_as_ix86_cmov_sun_syntax,,,
3606 [cmovl.l %edx, %eax],,
3607 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3608 [Define if your assembler supports the Sun syntax for cmov.])])
3610 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3611 gcc_cv_as_ix86_ffreep,,,
3613 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3614 [Define if your assembler supports the ffreep mnemonic.])])
3616 gcc_GAS_CHECK_FEATURE([.quad directive],
3617 gcc_cv_as_ix86_quad,,,
3619 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3620 [Define if your assembler supports the .quad directive.])])
3622 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3623 gcc_cv_as_ix86_sahf,,,
3626 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3627 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3629 gcc_GAS_CHECK_FEATURE([hle prefixes],
3630 gcc_cv_as_ix86_hle,,,
3631 [lock xacquire cmpxchg %esi, (%ecx)],,
3632 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3633 [Define if your assembler supports HLE prefixes.])])
3635 gcc_GAS_CHECK_FEATURE([swap suffix],
3636 gcc_cv_as_ix86_swap,,,
3637 [movl.s %esp, %ebp],,
3638 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3639 [Define if your assembler supports the swap suffix.])])
3641 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3642 gcc_cv_as_ix86_diff_sect_delta,,,
3650 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3651 [Define if your assembler supports the subtraction of symbols in different sections.])])
3653 # These two are used unconditionally by i386.[ch]; it is to be defined
3654 # to 1 if the feature is present, 0 otherwise.
3655 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3656 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3662 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3663 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3664 [Define true if the assembler supports '.long foo@GOTOFF'.])
3666 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3667 gcc_cv_as_ix86_rep_lock_prefix,,,
3673 lock addl %edi, (%eax,%esi)
3674 lock orl $0, (%esp)],,
3675 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3676 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3678 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3679 gcc_cv_as_ix86_tlsgdplt,,,
3680 [call tls_gd@tlsgdplt],
3681 [if test x$gcc_cv_ld != x \
3682 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3683 gcc_cv_as_ix86_tlsgdplt=yes
3686 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3687 [Define if your assembler and linker support @tlsgdplt.])])
3689 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3690 gcc_cv_as_ix86_tlsldmplt,,,
3692 call tls_ld@tlsldmplt],
3693 [if test x$gcc_cv_ld != x \
3694 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3695 gcc_cv_as_ix86_tlsldmplt=yes
3698 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3699 [Define if your assembler and linker support @tlsldmplt.])])
3704 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3705 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3707 addl r15 = @ltoffx(x#), gp
3709 ld8.mov r16 = [[r15]], x#],,
3710 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3711 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3717 *-*-aix*) conftest_s=' .machine "pwr5"
3721 gcc_GAS_CHECK_FEATURE([.machine directive support],
3722 gcc_cv_as_machine_directive,,,
3723 [ .machine ppc7400])
3724 if test x$gcc_cv_as_machine_directive != xyes; then
3725 echo "*** This target requires an assembler supporting \".machine\"" >&2
3726 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3727 test x$build = x$target && exit 1
3731 *) conftest_s=' .machine power4
3736 gcc_GAS_CHECK_FEATURE([mfcr field support],
3737 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3739 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3740 [Define if your assembler supports mfcr field.])])
3743 *-*-aix*) conftest_s=' .machine "pwr5"
3746 *) conftest_s=' .machine power5
3751 gcc_GAS_CHECK_FEATURE([popcntb support],
3752 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3754 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3755 [Define if your assembler supports popcntb field.])])
3758 *-*-aix*) conftest_s=' .machine "pwr5x"
3761 *) conftest_s=' .machine power5
3766 gcc_GAS_CHECK_FEATURE([fp round support],
3767 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3769 [AC_DEFINE(HAVE_AS_FPRND, 1,
3770 [Define if your assembler supports fprnd.])])
3773 *-*-aix*) conftest_s=' .machine "pwr6"
3776 *) conftest_s=' .machine power6
3781 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3782 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3784 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3785 [Define if your assembler supports mffgpr and mftgpr.])])
3788 *-*-aix*) conftest_s=' .csect .text[[PR]]
3790 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3794 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3795 *) conftest_s=' .text
3797 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3800 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3801 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3803 [AC_DEFINE(HAVE_AS_REL16, 1,
3804 [Define if your assembler supports R_PPC_REL16 relocs.])])
3807 *-*-aix*) conftest_s=' .machine "pwr6"
3810 *) conftest_s=' .machine power6
3815 gcc_GAS_CHECK_FEATURE([compare bytes support],
3816 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3818 [AC_DEFINE(HAVE_AS_CMPB, 1,
3819 [Define if your assembler supports cmpb.])])
3822 *-*-aix*) conftest_s=' .machine "pwr6"
3825 *) conftest_s=' .machine power6
3830 gcc_GAS_CHECK_FEATURE([decimal float support],
3831 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3833 [AC_DEFINE(HAVE_AS_DFP, 1,
3834 [Define if your assembler supports DFP instructions.])])
3837 *-*-aix*) conftest_s=' .machine "pwr7"
3840 *) conftest_s=' .machine power7
3845 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3846 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3848 [AC_DEFINE(HAVE_AS_VSX, 1,
3849 [Define if your assembler supports VSX instructions.])])
3852 *-*-aix*) conftest_s=' .machine "pwr7"
3855 *) conftest_s=' .machine power7
3860 gcc_GAS_CHECK_FEATURE([popcntd support],
3861 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3863 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3864 [Define if your assembler supports POPCNTD instructions.])])
3867 *-*-aix*) conftest_s=' .csect .text[[PR]]
3869 *) conftest_s=' .text
3873 gcc_GAS_CHECK_FEATURE([lwsync support],
3874 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3876 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3877 [Define if your assembler supports LWSYNC instructions.])])
3880 *-*-aix*) conftest_s=' .machine "476"
3883 *) conftest_s=' .machine "476"
3888 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3889 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3891 [AC_DEFINE(HAVE_AS_DCI, 1,
3892 [Define if your assembler supports the DCI/ICI instructions.])])
3894 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3895 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3896 [.gnu_attribute 4,1],,
3897 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3898 [Define if your assembler supports .gnu_attribute.])])
3900 gcc_GAS_CHECK_FEATURE([tls marker support],
3901 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3902 [ bl __tls_get_addr(x@tlsgd)],,
3903 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3904 [Define if your assembler supports arg info for __tls_get_addr.])])
3908 gcc_GAS_CHECK_FEATURE([.ref support],
3909 gcc_cv_as_aix_ref, [2,21,0],,
3910 [ .csect stuff[[rw]]
3916 [AC_DEFINE(HAVE_AS_REF, 1,
3917 [Define if your assembler supports .ref])])
3923 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3924 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3925 [ lw $4,%gp_rel(foo)($4)],,
3926 [if test x$target_cpu_default = x
3927 then target_cpu_default=MASK_EXPLICIT_RELOCS
3928 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3930 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3931 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3932 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3933 [Define if the assembler understands -mno-shared.])])
3935 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3936 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3937 [.gnu_attribute 4,1],,
3938 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3939 [Define if your assembler supports .gnu_attribute.])])
3941 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3942 gcc_cv_as_mips_dtprelword, [2,18,0],,
3943 [.section .tdata,"awT",@progbits
3947 .dtprelword x+0x8000],,
3948 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3949 [Define if your assembler supports .dtprelword.])])
3951 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3952 gcc_cv_as_mips_dspr1_mult,,,
3962 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3963 [Define if your assembler supports DSPR1 mult.])])
3965 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3966 gcc_cv_as_ld_jalr_reloc=no
3967 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3968 if test $in_tree_ld = yes ; then
3969 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3970 && test $in_tree_ld_is_elf = yes; then
3971 gcc_cv_as_ld_jalr_reloc=yes
3973 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3974 echo ' .ent x' > conftest.s
3975 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3976 echo ' ld $25,%call16(y)($28)' >> conftest.s
3977 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3978 echo '1: jalr $25' >> conftest.s
3979 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3980 echo '1: jalr $25' >> conftest.s
3981 echo ' .end x' >> conftest.s
3982 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3983 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3984 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3985 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3986 gcc_cv_as_ld_jalr_reloc=yes
3992 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3993 if test x$target_cpu_default = x; then
3994 target_cpu_default=MASK_RELAX_PIC_CALLS
3996 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3999 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4001 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4002 [gcc_cv_ld_mips_personality_relaxation],
4003 [gcc_cv_ld_mips_personality_relaxation=no
4004 if test $in_tree_ld = yes ; then
4005 if test "$gcc_cv_gld_major_version" -eq 2 \
4006 -a "$gcc_cv_gld_minor_version" -ge 21 \
4007 -o "$gcc_cv_gld_major_version" -gt 2; then
4008 gcc_cv_ld_mips_personality_relaxation=yes
4010 elif test x$gcc_cv_as != x \
4011 -a x$gcc_cv_ld != x \
4012 -a x$gcc_cv_readelf != x ; then
4013 cat > conftest.s <<EOF
4015 .cfi_personality 0x80,indirect_ptr
4022 .section .data,"aw",@progbits
4026 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4027 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4028 if $gcc_cv_readelf -d conftest 2>&1 \
4029 | grep TEXTREL > /dev/null 2>&1; then
4031 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4032 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4035 gcc_cv_ld_mips_personality_relaxation=yes
4039 rm -f conftest.s conftest.o conftest])
4040 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4041 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4042 [Define if your linker can relax absolute .eh_frame personality
4043 pointers into PC-relative form.])
4048 # Mips and HP-UX need the GNU assembler.
4049 # Linux on IA64 might be able to use the Intel assembler.
4052 mips*-*-* | *-*-hpux* )
4053 if test x$gas_flag = xyes \
4054 || test x"$host" != x"$build" \
4055 || test ! -x "$gcc_cv_as" \
4056 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4059 echo "*** This configuration requires the GNU assembler" >&2
4065 # ??? Not all targets support dwarf2 debug_line, even within a version
4066 # of gas. Moreover, we need to emit a valid instruction to trigger any
4067 # info to the output file. So, as supported targets are added to gas 2.11,
4068 # add some instruction here to (also) show we expect this might work.
4069 # ??? Once 2.11 is released, probably need to add first known working
4070 # version to the per-target configury.
4072 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4073 | pa | rs6000 | score | sparc | spu | tilegx | tilepro | xstormy16 | xtensa)
4083 if test x"$insn" != x; then
4085 .file 1 \"conftest.s\"
4088 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4089 gcc_cv_as_dwarf2_debug_line,
4090 [elf,2,11,0],, [$conftest_s],
4091 [if test x$gcc_cv_objdump != x \
4092 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4093 | grep debug_line > /dev/null 2>&1; then
4094 gcc_cv_as_dwarf2_debug_line=yes
4097 # The .debug_line file table must be in the exact order that
4098 # we specified the files, since these indices are also used
4099 # by DW_AT_decl_file. Approximate this test by testing if
4100 # the assembler bitches if the same index is assigned twice.
4101 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4102 gcc_cv_as_dwarf2_file_buggy,,,
4106 if test $gcc_cv_as_dwarf2_debug_line = yes \
4107 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4108 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4109 [Define if your assembler supports dwarf2 .file/.loc directives,
4110 and preserves file table indices exactly as given.])
4113 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4114 gcc_cv_as_gdwarf2_flag,
4115 [elf,2,11,0], [--gdwarf2], [$insn],,
4116 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4117 [Define if your assembler supports the --gdwarf2 option.])])
4119 gcc_GAS_CHECK_FEATURE([--gstabs option],
4120 gcc_cv_as_gstabs_flag,
4121 [elf,2,11,0], [--gstabs], [$insn],
4122 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4123 # and warns about it, but still exits successfully. So check for
4125 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4127 else gcc_cv_as_gstabs_flag=yes
4129 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4130 [Define if your assembler supports the --gstabs option.])])
4132 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4133 gcc_cv_as_debug_prefix_map_flag,
4134 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4135 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4136 [Define if your assembler supports the --debug-prefix-map option.])])
4139 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4142 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4143 [Define if your assembler supports .lcomm with an alignment field.])])
4145 AC_ARG_ENABLE(gnu-unique-object,
4146 [AS_HELP_STRING([--enable-gnu-unique-object],
4147 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4148 [case $enable_gnu_unique_object in
4150 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4151 Valid choices are 'yes' and 'no'.]) ;;
4153 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4155 [.type foo, '$target_type_format_char'gnu_unique_object],,
4156 # We need to unquote above to to use the definition from config.gcc.
4157 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4158 [[if test x$host = x$build -a x$host = x$target &&
4159 ldd --version 2>/dev/null &&
4160 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4161 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4162 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4163 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4164 if test "$glibcnum" -ge 2011 ; then
4165 enable_gnu_unique_object=yes
4168 if test x$enable_gnu_unique_object = xyes; then
4169 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4170 [Define if your assembler supports @gnu_unique_object.])
4173 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4174 [gcc_cv_as_line_zero],
4175 [gcc_cv_as_line_zero=no
4176 if test $in_tree_gas = yes; then
4177 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4178 elif test "x$gcc_cv_as" != x; then
4179 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4180 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4181 test "x`cat conftest.out`" = x
4183 gcc_cv_as_line_zero=yes
4185 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4186 cat conftest.s >&AS_MESSAGE_LOG_FD
4187 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4188 cat conftest.out >&AS_MESSAGE_LOG_FD
4190 rm -f conftest.o conftest.s conftest.out
4192 if test "x$gcc_cv_as_line_zero" = xyes; then
4193 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4194 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4197 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4198 gcc_cv_ld_eh_frame_hdr=no
4199 if test $in_tree_ld = yes ; then
4200 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4201 && test $in_tree_ld_is_elf = yes; then
4202 gcc_cv_ld_eh_frame_hdr=yes
4204 elif test x$gcc_cv_ld != x; then
4205 if echo "$ld_ver" | grep GNU > /dev/null; then
4206 # Check if linker supports --eh-frame-hdr option
4207 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4208 gcc_cv_ld_eh_frame_hdr=yes
4213 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4214 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4215 gcc_cv_ld_eh_frame_hdr=yes
4221 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4222 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4223 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4224 [Define if your linker supports .eh_frame_hdr.])
4226 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4228 AC_MSG_CHECKING(linker position independent executable support)
4230 if test $in_tree_ld = yes ; then
4231 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4232 && test $in_tree_ld_is_elf = yes; then
4235 elif test x$gcc_cv_ld != x; then
4236 # Check if linker supports -pie option
4237 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4241 if test x"$gcc_cv_ld_pie" = xyes; then
4242 AC_DEFINE(HAVE_LD_PIE, 1,
4243 [Define if your linker supports -pie option.])
4245 AC_MSG_RESULT($gcc_cv_ld_pie)
4247 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4248 gcc_cv_ld_eh_gc_sections=no
4249 if test $in_tree_ld = yes ; then
4250 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4251 && test $in_tree_ld_is_elf = yes; then
4252 gcc_cv_ld_eh_gc_sections=yes
4254 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4255 cat > conftest.s <<EOF
4258 .type _start, @function
4261 .size _start, .-_start
4262 .section .text.foo,"ax",@progbits
4263 .type foo, @function
4267 .section .gcc_except_table.foo,"a",@progbits
4270 .section .eh_frame,"a",@progbits
4273 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4274 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4275 | grep "gc-sections option ignored" > /dev/null; then
4276 gcc_cv_ld_eh_gc_sections=no
4277 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4278 | grep gcc_except_table > /dev/null; then
4279 gcc_cv_ld_eh_gc_sections=yes
4280 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4281 if test x$gcc_cv_as_comdat_group != xyes; then
4282 gcc_cv_ld_eh_gc_sections=no
4283 cat > conftest.s <<EOF
4286 .type _start, @function
4289 .size _start, .-_start
4290 .section .gnu.linkonce.t.foo,"ax",@progbits
4291 .type foo, @function
4295 .section .gcc_except_table.foo,"a",@progbits
4298 .section .eh_frame,"a",@progbits
4301 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4302 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4303 | grep "gc-sections option ignored" > /dev/null; then
4304 gcc_cv_ld_eh_gc_sections=no
4305 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4306 | grep gcc_except_table > /dev/null; then
4307 gcc_cv_ld_eh_gc_sections=yes
4313 rm -f conftest.s conftest.o conftest
4317 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4318 gcc_cv_ld_eh_gc_sections=no
4321 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4322 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4323 [Define if your linker supports garbage collection of
4324 sections in presence of EH frames.])
4326 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4328 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4329 gcc_cv_ld_eh_gc_sections_bug=no
4330 if test $in_tree_ld = yes ; then
4331 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4332 && test $in_tree_ld_is_elf = yes; then
4333 gcc_cv_ld_eh_gc_sections_bug=yes
4335 elif test x$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
4336 gcc_cv_ld_eh_gc_sections_bug=yes
4337 cat > conftest.s <<EOF
4340 .type _start, @function
4343 .size _start, .-_start
4344 .section .text.startup.foo,"ax",@progbits
4345 .type foo, @function
4349 .section .gcc_except_table.foo,"a",@progbits
4352 .section .eh_frame,"a",@progbits
4355 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4356 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4357 | grep "gc-sections option ignored" > /dev/null; then
4359 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4360 | grep gcc_except_table > /dev/null; then
4361 gcc_cv_ld_eh_gc_sections_bug=no
4364 rm -f conftest.s conftest.o conftest
4366 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4367 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4368 [Define if your linker has buggy garbage collection of
4369 sections support when .text.startup.foo like sections are used.])
4371 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4377 AC_CACHE_CHECK(linker --as-needed support,
4378 gcc_cv_ld_as_needed,
4379 [gcc_cv_ld_as_needed=no
4380 if test $in_tree_ld = yes ; then
4381 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4382 && test $in_tree_ld_is_elf = yes; then
4383 gcc_cv_ld_as_needed=yes
4385 elif test x$gcc_cv_ld != x; then
4386 # Check if linker supports --as-needed and --no-as-needed options
4387 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4388 gcc_cv_ld_as_needed=yes
4392 if test x"$gcc_cv_ld_as_needed" = xyes; then
4393 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4394 [Define if your linker supports --as-needed and --no-as-needed options.])
4397 case "$target:$tm_file" in
4398 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4401 emul_name="-melf64ppc"
4404 emul_name="-melf64ppc_fbsd"
4407 AC_CACHE_CHECK(linker support for omitting dot symbols,
4408 gcc_cv_ld_no_dot_syms,
4409 [gcc_cv_ld_no_dot_syms=no
4410 if test x"$ld_is_gold" = xyes; then
4411 gcc_cv_ld_no_dot_syms=yes
4412 elif test $in_tree_ld = yes ; then
4413 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4414 gcc_cv_ld_no_dot_syms=yes
4416 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4417 cat > conftest1.s <<EOF
4421 cat > conftest2.s <<EOF
4422 .section ".opd","aw"
4427 .quad .LEfoo,.TOC.@tocbase,0
4433 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4434 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4435 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4436 gcc_cv_ld_no_dot_syms=yes
4438 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4441 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4442 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4443 [Define if your PowerPC64 linker only needs function descriptor syms.])
4446 AC_CACHE_CHECK(linker large toc support,
4447 gcc_cv_ld_large_toc,
4448 [gcc_cv_ld_large_toc=no
4449 if test x"$ld_is_gold" = xyes; then
4450 gcc_cv_ld_large_toc=yes
4451 elif test $in_tree_ld = yes ; then
4452 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4453 gcc_cv_ld_large_toc=yes
4455 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4456 cat > conftest.s <<EOF
4457 .section ".tbss","awT",@nobits
4463 addis 9,13,ie0@got@tprel@ha
4464 ld 9,ie0@got@tprel@l(9)
4466 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4467 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4468 gcc_cv_ld_large_toc=yes
4470 rm -f conftest conftest.o conftest.s
4473 if test x"$gcc_cv_ld_large_toc" = xyes; then
4474 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4475 [Define if your PowerPC64 linker supports a large TOC.])
4480 AC_CACHE_CHECK(linker --build-id support,
4482 [gcc_cv_ld_buildid=no
4483 if test $in_tree_ld = yes ; then
4484 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4485 "$gcc_cv_gld_minor_version" -ge 18 -o \
4486 "$gcc_cv_gld_major_version" -gt 2 \
4487 && test $in_tree_ld_is_elf = yes; then
4488 gcc_cv_ld_buildid=yes
4490 elif test x$gcc_cv_ld != x; then
4491 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4492 gcc_cv_ld_buildid=yes
4495 if test x"$gcc_cv_ld_buildid" = xyes; then
4496 AC_DEFINE(HAVE_LD_BUILDID, 1,
4497 [Define if your linker supports --build-id.])
4500 AC_ARG_ENABLE(linker-build-id,
4501 [AS_HELP_STRING([--enable-linker-build-id],
4502 [compiler will always pass --build-id to linker])],
4504 enable_linker_build_id=no)
4506 if test x"$enable_linker_build_id" = xyes; then
4507 if test x"$gcc_cv_ld_buildid" = xyes; then
4508 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4509 [Define if gcc should always pass --build-id to linker.])
4511 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4515 # In binutils 2.21, GNU ld gained support for new emulations fully
4516 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4517 AC_CACHE_CHECK(linker *_sol2 emulation support,
4518 gcc_cv_ld_sol2_emulation,
4519 [gcc_cv_ld_sol2_emulation=no
4520 if test $in_tree_ld = yes ; then
4521 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4522 "$gcc_cv_gld_minor_version" -ge 21 -o \
4523 "$gcc_cv_gld_major_version" -gt 2 \
4524 && test $in_tree_ld_is_elf = yes; then
4525 gcc_cv_ld_sol2_emulation=yes
4527 elif test x$gcc_cv_ld != x; then
4528 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4529 grep _sol2 > /dev/null; then
4530 gcc_cv_ld_sol2_emulation=yes
4533 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4534 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4535 [Define if your linker supports the *_sol2 emulations.])
4538 AC_CACHE_CHECK(linker --sysroot support,
4540 [gcc_cv_ld_sysroot=no
4541 if test $in_tree_ld = yes ; then
4542 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4543 gcc_cv_ld_sysroot=yes
4545 elif test x$gcc_cv_ld != x; then
4546 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4547 gcc_cv_ld_sysroot=yes
4550 if test x"$gcc_cv_ld_sysroot" = xyes; then
4551 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4552 [Define if your linker supports --sysroot.])
4555 if test x$with_sysroot = x && test x$host = x$target \
4556 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4557 && test "$prefix" != "NONE"; then
4558 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4559 [Define to PREFIX/include if cpp should also search that directory.])
4562 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4563 if test "x$with_headers" != x; then
4564 target_header_dir=$with_headers
4565 elif test "x$with_sysroot" = x; then
4566 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
4567 elif test "x$with_build_sysroot" != "x"; then
4568 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4569 elif test "x$with_sysroot" = xyes; then
4570 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4572 target_header_dir="${with_sysroot}${native_system_header_dir}"
4575 target_header_dir=${native_system_header_dir}
4578 # Test for stack protector support in target C library.
4579 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4580 gcc_cv_libc_provides_ssp,
4581 [gcc_cv_libc_provides_ssp=no
4583 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4584 [# glibc 2.4 and later provides __stack_chk_fail and
4585 # either __stack_chk_guard, or TLS access to stack guard canary.
4586 if test -f $target_header_dir/features.h \
4587 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4588 $target_header_dir/features.h > /dev/null; then
4589 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4590 $target_header_dir/features.h > /dev/null; then
4591 gcc_cv_libc_provides_ssp=yes
4592 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4593 $target_header_dir/features.h > /dev/null \
4594 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4595 $target_header_dir/features.h > /dev/null; then
4596 gcc_cv_libc_provides_ssp=yes
4597 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4598 $target_header_dir/features.h > /dev/null && \
4599 test -f $target_header_dir/bits/uClibc_config.h && \
4600 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4601 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4602 gcc_cv_libc_provides_ssp=yes
4604 # all versions of Bionic support stack protector
4605 elif test -f $target_header_dir/sys/cdefs.h \
4606 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
4607 $target_header_dir/sys/cdefs.h > /dev/null; then
4608 gcc_cv_libc_provides_ssp=yes
4612 # Avoid complicated tests (see
4613 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4614 # simply assert that glibc does provide this, which is true for all
4615 # realistically usable GNU/Hurd configurations.
4616 gcc_cv_libc_provides_ssp=yes;;
4617 *-*-darwin* | *-*-freebsd*)
4618 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4619 [echo "no __stack_chk_fail on this target"])
4621 *) gcc_cv_libc_provides_ssp=no ;;
4624 if test x$gcc_cv_libc_provides_ssp = xyes; then
4625 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4626 [Define if your target C library provides stack protector support])
4629 # Test for <sys/sdt.h> on the target.
4630 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4631 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4633 if test -f $target_header_dir/sys/sdt.h; then
4635 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4636 [Define if your target C library provides sys/sdt.h])
4638 AC_MSG_RESULT($have_sys_sdt_h)
4640 # Check if TFmode long double should be used by default or not.
4641 # Some glibc targets used DFmode long double, but with glibc 2.4
4642 # and later they can use TFmode.
4644 powerpc*-*-linux* | \
4648 AC_ARG_WITH(long-double-128,
4649 [AS_HELP_STRING([--with-long-double-128],
4650 [use 128-bit long double by default])],
4651 gcc_cv_target_ldbl128="$with_long_double_128",
4652 [[gcc_cv_target_ldbl128=no
4653 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4654 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4655 && gcc_cv_target_ldbl128=yes
4659 if test x$gcc_cv_target_ldbl128 = xyes; then
4660 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4661 [Define if TFmode long double should be the default])
4664 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4665 gcc_cv_target_dl_iterate_phdr=unknown
4667 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
4668 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
4669 # libdl there, both complicating its use and breaking compatibility
4670 # between Solaris 10 updates.
4671 *-*-solaris2.1[[1-9]]*)
4672 # <link.h> needs both a dl_iterate_phdr declaration and support for
4673 # compilation with largefile support.
4674 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4675 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4676 gcc_cv_target_dl_iterate_phdr=yes
4678 gcc_cv_target_dl_iterate_phdr=no
4682 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4683 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4684 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4685 [Define if your target C library provides the `dl_iterate_phdr' function.])
4687 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4689 # Find out what GC implementation we want, or may, use.
4691 [AS_HELP_STRING([--with-gc={page,zone}],
4692 [choose the garbage collection mechanism to use
4693 with the compiler])],
4700 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4703 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4708 echo "Using $GGC for garbage collection."
4710 # Libraries to use on the host. This will normally be set by the top
4711 # level Makefile. Here we simply capture the value for our Makefile.
4712 if test -z "${HOST_LIBS+set}"; then
4717 # Use the system's zlib library.
4719 zlibinc="-I\$(srcdir)/../zlib"
4720 AC_ARG_WITH(system-zlib,
4721 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4728 dnl Very limited version of automake's enable-maintainer-mode
4730 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4731 dnl maintainer-mode is disabled by default
4732 AC_ARG_ENABLE(maintainer-mode,
4733 [AS_HELP_STRING([--enable-maintainer-mode],
4734 [enable make rules and dependencies not useful
4735 (and sometimes confusing) to the casual installer])],
4736 maintainer_mode=$enableval,
4739 AC_MSG_RESULT($maintainer_mode)
4741 if test "$maintainer_mode" = "yes"; then
4752 # Make empty files to contain the specs and options for each language.
4753 # Then add #include lines to for a compiler that has specs and/or options.
4759 # These (without "all_") are set in each config-lang.in.
4760 # `language' must be a single word so is spelled singularly.
4763 all_outputs='Makefile'
4764 # List of language makefile fragments.
4766 # Additional files for gengtype
4767 all_gtfiles="$target_gtfiles"
4769 # These are the languages that are set in --enable-languages,
4770 # and are available in the GCC tree.
4771 all_selected_languages=
4773 # Add the language fragments.
4774 # Languages are added via two mechanisms. Some information must be
4775 # recorded in makefile variables, these are defined in config-lang.in.
4776 # We accumulate them and plug them into the main Makefile.
4777 # The other mechanism is a set of hooks for each of the main targets
4778 # like `clean', `install', etc.
4780 language_hooks="Make-hooks"
4782 for lang in ${srcdir}/*/config-lang.in
4785 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4787 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4788 if test "x$lang_alias" = x
4790 echo "$lang doesn't set \$language." 1>&2
4793 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4794 subdirs="$subdirs $subdir"
4796 # $gcc_subdir is where the gcc integration files are to be found
4797 # for a language, both for internal compiler purposes (compiler
4798 # sources implementing front-end to GCC tree converters), and for
4799 # build infrastructure purposes (Make-lang.in, etc.)
4801 # This will be <subdir> (relative to $srcdir) if a line like
4802 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4803 # is found in <langdir>/config-lang.in, and will remain <langdir>
4806 # Except for the language alias (fetched above), the regular
4807 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4808 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4809 # only this and the language alias.
4811 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4812 if [ "$gcc_subdir" = "" ]; then
4813 gcc_subdir="$subdir"
4816 case ",$enable_languages," in
4818 all_selected_languages="$all_selected_languages $lang_alias"
4819 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4820 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4832 . ${srcdir}/$gcc_subdir/config-lang.in
4833 if test "x$language" = x
4835 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4840 case ",$enable_languages," in
4843 for i in $subdir_requires; do
4844 test -f "${srcdir}/$i/config-lang.in" && continue
4852 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4853 if test -f $srcdir/$gcc_subdir/lang.opt; then
4854 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4855 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4857 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4858 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4860 all_languages="$all_languages $language"
4861 all_compilers="$all_compilers $compilers"
4862 all_outputs="$all_outputs $outputs"
4863 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4864 case ",$enable_languages," in
4866 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4868 AC_SUBST(enable_lto)
4875 for language in $all_selected_languages
4877 check_languages="$check_languages check-$language"
4880 # We link each language in with a set of hooks, reached indirectly via
4881 # lang.${target}. Only do so for selected languages.
4885 target_list="all.cross start.encap rest.encap tags \
4886 install-common install-man install-info install-pdf install-html dvi \
4887 pdf html uninstall info man srcextra srcman srcinfo \
4888 mostlyclean clean distclean maintainer-clean install-plugin"
4890 for t in $target_list
4893 for lang in $all_selected_languages
4897 echo "lang.$t: $x" >> Make-hooks
4901 # Option include files
4904 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4905 option_includes="option-includes.mk"
4906 AC_SUBST_FILE(option_includes)
4914 echo "dir ." > .gdbinit
4915 echo "dir ${srcdir}" >> .gdbinit
4916 if test x$gdb_needs_out_file_path = xyes
4918 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4920 if test "x$subdirs" != x; then
4923 echo "dir ${srcdir}/$s" >> .gdbinit
4926 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4928 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4929 AC_SUBST(gcc_tooldir)
4932 # Find a directory in which to install a shared libgcc.
4934 AC_ARG_ENABLE(version-specific-runtime-libs,
4935 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
4936 [specify that runtime libraries should be
4937 installed in a compiler-specific directory])])
4939 # Substitute configuration variables
4942 AC_SUBST(all_compilers)
4943 AC_SUBST(all_gtfiles)
4944 AC_SUBST(all_lang_makefrags)
4945 AC_SUBST(all_languages)
4946 AC_SUBST(all_selected_languages)
4947 AC_SUBST(build_exeext)
4948 AC_SUBST(build_install_headers_dir)
4949 AC_SUBST(build_xm_file_list)
4950 AC_SUBST(build_xm_include_list)
4951 AC_SUBST(build_xm_defines)
4952 AC_SUBST(build_file_translate)
4953 AC_SUBST(check_languages)
4954 AC_SUBST(cpp_install_dir)
4955 AC_SUBST(xmake_file)
4956 AC_SUBST(tmake_file)
4957 AC_SUBST(TM_ENDIAN_CONFIG)
4958 AC_SUBST(TM_MULTILIB_CONFIG)
4959 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4960 AC_SUBST(extra_gcc_objs)
4961 AC_SUBST(user_headers_inc_next_pre)
4962 AC_SUBST(user_headers_inc_next_post)
4963 AC_SUBST(extra_headers_list)
4964 AC_SUBST(extra_objs)
4965 AC_SUBST(extra_programs)
4966 AC_SUBST(float_h_file)
4967 AC_SUBST(gcc_config_arguments)
4968 AC_SUBST(gcc_gxx_include_dir)
4969 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
4970 AC_SUBST(host_exeext)
4971 AC_SUBST(host_xm_file_list)
4972 AC_SUBST(host_xm_include_list)
4973 AC_SUBST(host_xm_defines)
4974 AC_SUBST(out_host_hook_obj)
4976 AC_SUBST(lang_opt_files)
4977 AC_SUBST(lang_specs_files)
4978 AC_SUBST(lang_tree_files)
4979 AC_SUBST(local_prefix)
4981 AC_SUBST(objc_boehm_gc)
4983 AC_SUBST(out_object_file)
4984 AC_SUBST(common_out_file)
4985 AC_SUBST(common_out_object_file)
4986 AC_SUBST(tm_file_list)
4987 AC_SUBST(tm_include_list)
4988 AC_SUBST(tm_defines)
4989 AC_SUBST(tm_p_file_list)
4990 AC_SUBST(tm_p_include_list)
4991 AC_SUBST(xm_file_list)
4992 AC_SUBST(xm_include_list)
4993 AC_SUBST(xm_defines)
4994 AC_SUBST(use_gcc_stdint)
4995 AC_SUBST(c_target_objs)
4996 AC_SUBST(cxx_target_objs)
4997 AC_SUBST(fortran_target_objs)
4998 AC_SUBST(target_cpu_default)
5000 AC_SUBST_FILE(language_hooks)
5003 if test x${build} = x${host} ; then
5004 if test x${host} = x${target} ; then
5005 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5007 echo "Links are now set up to build a cross-compiler" 1>&2
5008 echo " from ${host} to ${target}." 1>&2
5011 if test x${host} = x${target} ; then
5012 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5013 echo " for ${target}." 1>&2
5015 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5016 echo " from ${host} to ${target}." 1>&2
5020 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5021 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5023 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5024 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5026 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5027 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5028 if test "x${CLOOGLIBS}" != "x" ; then
5029 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5032 # Check for plugin support
5033 AC_ARG_ENABLE(plugin,
5034 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5035 enable_plugin=$enableval,
5036 enable_plugin=yes; default_plugin=yes)
5042 if test x$build = x$host; then
5043 export_sym_check="nm${exeext} -g"
5044 elif test x$host = x$target; then
5045 export_sym_check="$gcc_cv_nm -g"
5051 if test x$build = x$host; then
5052 export_sym_check="objdump${exeext} -T"
5053 elif test x$host = x$target; then
5054 export_sym_check="$gcc_cv_objdump -T"
5061 if test x"$enable_plugin" = x"yes"; then
5063 AC_MSG_CHECKING([for exported symbols])
5064 if test "x$export_sym_check" != x; then
5065 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5066 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
5067 if $export_sym_check conftest | grep foobar > /dev/null; then
5068 : # No need to use a flag
5069 AC_MSG_RESULT([yes])
5071 AC_MSG_RESULT([yes])
5072 AC_MSG_CHECKING([for -rdynamic])
5073 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
5074 if $export_sym_check conftest | grep foobar > /dev/null; then
5076 pluginlibs="-rdynamic"
5081 AC_MSG_RESULT([$plugin_rdynamic])
5084 AC_MSG_RESULT([unable to check])
5089 AC_SEARCH_LIBS([dlopen], [dl])
5090 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5091 pluginlibs="$pluginlibs -ldl"
5095 # Check that we can build shared objects with -fPIC -shared
5096 saved_LDFLAGS="$LDFLAGS"
5097 saved_CFLAGS="$CFLAGS"
5100 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5101 CFLAGS="$CFLAGS -fPIC"
5102 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5105 CFLAGS="$CFLAGS -fPIC"
5106 LDFLAGS="$LDFLAGS -fPIC -shared"
5109 AC_MSG_CHECKING([for -fPIC -shared])
5111 [extern int X;],[return X == 0;],
5112 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5113 [AC_MSG_RESULT([no]); have_pic_shared=no])
5114 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5118 LDFLAGS="$saved_LDFLAGS"
5119 CFLAGS="$saved_CFLAGS"
5121 # If plugin support had been requested but not available, fail.
5122 if test x"$enable_plugin" = x"no" ; then
5123 if test x"$default_plugin" != x"yes"; then
5125 Building GCC with plugin support requires a host that supports
5126 -fPIC, -shared, -ldl and -rdynamic.])
5131 AC_SUBST(pluginlibs)
5132 AC_SUBST(enable_plugin)
5133 if test x"$enable_plugin" = x"yes"; then
5134 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5138 AC_ARG_ENABLE(libquadmath-support,
5139 [AS_HELP_STRING([--disable-libquadmath-support],
5140 [disable libquadmath support for Fortran])],
5141 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5142 ENABLE_LIBQUADMATH_SUPPORT=yes)
5143 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5144 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5145 [Define to 1 to enable libquadmath support])
5149 # Specify what hash style to use by default.
5150 AC_ARG_WITH([linker-hash-style],
5151 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5152 [specify the linker hash style])],
5153 [case x"$withval" in
5155 LINKER_HASH_STYLE=sysv
5158 LINKER_HASH_STYLE=gnu
5161 LINKER_HASH_STYLE=both
5164 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5167 [LINKER_HASH_STYLE=''])
5168 if test x"${LINKER_HASH_STYLE}" != x; then
5169 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5170 [The linker hash style])
5173 # Configure the subdirectories
5174 # AC_CONFIG_SUBDIRS($subdirs)
5176 # Create the Makefile
5177 # and configure language subdirectories
5178 AC_CONFIG_FILES($all_outputs)
5180 AC_CONFIG_COMMANDS([default],
5182 case ${CONFIG_HEADERS} in
5183 *auto-host.h:config.in*)
5186 # Make sure all the subdirs exist.
5187 for d in $subdirs doc build common c-family
5189 test -d $d || mkdir $d
5192 [subdirs='$subdirs'])