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 "s/-O[[s0-9]]* *//" ` ;;
303 # Determine PICFLAG for target gnatlib.
304 GCC_PICFLAG_FOR_TARGET
305 AC_SUBST(PICFLAG_FOR_TARGET)
307 # -------------------------
308 # Check C compiler features
309 # -------------------------
311 AC_USE_SYSTEM_EXTENSIONS
317 # sizeof(char) is 1 by definition.
318 AC_CHECK_SIZEOF(void *)
319 AC_CHECK_SIZEOF(short)
321 AC_CHECK_SIZEOF(long)
322 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
323 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
326 # ---------------------
327 # Warnings and checking
328 # ---------------------
330 # Check $CC warning features (if it's GCC).
331 # We want to use -pedantic, but we don't want warnings about
335 # * C++11 narrowing conversions in { }
336 # So, we only use -pedantic if we can disable those warnings.
338 ACX_PROG_CC_WARNING_OPTS(
339 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual])), [loose_warn])
340 ACX_PROG_CC_WARNING_OPTS(
341 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
343 ACX_PROG_CC_WARNING_OPTS(
344 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
345 ACX_PROG_CC_WARNING_OPTS(
346 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
347 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
348 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
349 [-Wno-overlength-strings])), [strict_warn])
350 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
352 # The above macros do nothing if the compiler is not GCC. However, the
353 # Makefile has more goo to add other flags, so these variables are used
354 # to enable warnings only for GCC.
357 if test "x$GCC" = "xyes"; then
358 warn_cflags='$(GCC_WARN_CFLAGS)'
359 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
361 AC_SUBST(warn_cflags)
362 AC_SUBST(warn_cxxflags)
364 # Disable exceptions and RTTI if building with g++
365 ACX_PROG_CC_WARNING_OPTS(
366 m4_quote(m4_do([-fno-exceptions -fno-rtti])), [noexception_flags])
368 # Enable expensive internal checks
370 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
374 AC_ARG_ENABLE(checking,
375 [AS_HELP_STRING([[--enable-checking[=LIST]]],
376 [enable expensive run-time checks. With LIST,
377 enable only specific categories of checks.
378 Categories are: yes,no,all,none,release.
379 Flags are: assert,df,fold,gc,gcac,gimple,misc,
380 rtlflag,rtl,runtime,tree,valgrind,types])],
381 [ac_checking_flags="${enableval}"],[
382 # Determine the default checks.
383 if test x$is_release = x ; then
384 ac_checking_flags=yes
386 ac_checking_flags=release
388 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
389 for check in release $ac_checking_flags
392 # these set all the flags to specific states
393 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
394 ac_fold_checking= ; ac_gc_checking=1 ;
395 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
396 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
397 ac_tree_checking=1 ; ac_valgrind_checking= ;
398 ac_types_checking=1 ;;
399 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
400 ac_fold_checking= ; ac_gc_checking= ;
401 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
402 ac_rtlflag_checking= ; ac_runtime_checking= ;
403 ac_tree_checking= ; ac_valgrind_checking= ;
404 ac_types_checking= ;;
405 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
406 ac_fold_checking=1 ; ac_gc_checking=1 ;
407 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
408 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
409 ac_tree_checking=1 ; ac_valgrind_checking= ;
410 ac_types_checking=1 ;;
411 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
412 ac_fold_checking= ; ac_gc_checking= ;
413 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
414 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
415 ac_tree_checking= ; ac_valgrind_checking= ;
416 ac_types_checking= ;;
417 # these enable particular checks
418 assert) ac_assert_checking=1 ;;
419 df) ac_df_checking=1 ;;
420 fold) ac_fold_checking=1 ;;
421 gc) ac_gc_checking=1 ;;
422 gcac) ac_gc_always_collect=1 ;;
423 gimple) ac_gimple_checking=1 ;;
424 misc) ac_checking=1 ;;
425 rtl) ac_rtl_checking=1 ;;
426 rtlflag) ac_rtlflag_checking=1 ;;
427 runtime) ac_runtime_checking=1 ;;
428 tree) ac_tree_checking=1 ;;
429 types) ac_types_checking=1 ;;
430 valgrind) ac_valgrind_checking=1 ;;
431 *) AC_MSG_ERROR(unknown check category $check) ;;
437 if test x$ac_checking != x ; then
438 AC_DEFINE(ENABLE_CHECKING, 1,
439 [Define if you want more run-time sanity checks. This one gets a grab
440 bag of miscellaneous but relatively cheap checks.])
441 nocommon_flag=-fno-common
443 AC_SUBST(nocommon_flag)
444 if test x$ac_df_checking != x ; then
445 AC_DEFINE(ENABLE_DF_CHECKING, 1,
446 [Define if you want more run-time sanity checks for dataflow.])
448 if test x$ac_assert_checking != x ; then
449 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
450 [Define if you want assertions enabled. This is a cheap check.])
452 if test x$ac_gimple_checking != x ; then
453 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
454 [Define if you want operations on GIMPLE (the basic data structure of
455 the high-level optimizers) to be checked for dynamic type safety at
456 runtime. This is moderately expensive.])
458 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
459 if test x$ac_runtime_checking != x ; then
460 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
461 [Define if you want runtime assertions enabled. This is a cheap check.])
463 if test x$ac_tree_checking != x ; then
464 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
465 [Define if you want all operations on trees (the basic data
466 structure of the front ends) to be checked for dynamic type safety
467 at runtime. This is moderately expensive. The tree browser debugging
468 routines will also be enabled by this option.
470 TREEBROWSER=tree-browser.o
472 if test x$ac_types_checking != x ; then
473 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
474 [Define if you want all gimple types to be verified after gimplifiation.
478 AC_SUBST(TREEBROWSER)
479 if test x$ac_rtl_checking != x ; then
480 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
481 [Define if you want all operations on RTL (the basic data structure
482 of the optimizer and back end) to be checked for dynamic type safety
483 at runtime. This is quite expensive.])
485 if test x$ac_rtlflag_checking != x ; then
486 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
487 [Define if you want RTL flag accesses to be checked against the RTL
488 codes that are supported for each access macro. This is relatively
491 if test x$ac_gc_checking != x ; then
492 AC_DEFINE(ENABLE_GC_CHECKING, 1,
493 [Define if you want the garbage collector to do object poisoning and
494 other memory allocation checks. This is quite expensive.])
496 if test x$ac_gc_always_collect != x ; then
497 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
498 [Define if you want the garbage collector to operate in maximally
499 paranoid mode, validating the entire heap and collecting garbage at
500 every opportunity. This is extremely expensive.])
502 if test x$ac_fold_checking != x ; then
503 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
504 [Define if you want fold checked that it never destructs its argument.
505 This is quite expensive.])
507 valgrind_path_defines=
510 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
511 dnl # an if statement. This was the source of very frustrating bugs
512 dnl # in converting to autoconf 2.5x!
513 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
515 if test x$ac_valgrind_checking != x ; then
516 # It is certainly possible that there's valgrind but no valgrind.h.
517 # GCC relies on making annotations so we must have both.
518 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
519 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
520 [[#include <valgrind/memcheck.h>
521 #ifndef VALGRIND_DISCARD
522 #error VALGRIND_DISCARD not defined
524 [gcc_cv_header_valgrind_memcheck_h=yes],
525 [gcc_cv_header_valgrind_memcheck_h=no])
526 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
527 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
528 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
529 [[#include <memcheck.h>
530 #ifndef VALGRIND_DISCARD
531 #error VALGRIND_DISCARD not defined
533 [gcc_cv_header_memcheck_h=yes],
534 [gcc_cv_header_memcheck_h=no])
535 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
536 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
537 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
538 if test "x$valgrind_path" = "x" \
539 || (test $have_valgrind_h = no \
540 && test $gcc_cv_header_memcheck_h = no \
541 && test $gcc_cv_header_valgrind_memcheck_h = no); then
542 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
544 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
545 valgrind_command="$valgrind_path -q"
546 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
547 [Define if you want to run subprograms and generated programs
548 through valgrind (a memory checker). This is extremely expensive.])
549 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
550 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
551 [Define if valgrind's valgrind/memcheck.h header is installed.])
553 if test $gcc_cv_header_memcheck_h = yes; then
554 AC_DEFINE(HAVE_MEMCHECK_H, 1,
555 [Define if valgrind's memcheck.h header is installed.])
558 AC_SUBST(valgrind_path_defines)
559 AC_SUBST(valgrind_command)
561 # Enable code coverage collection
562 AC_ARG_ENABLE(coverage,
563 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
564 [enable compiler's code coverage collection.
565 Use to measure compiler performance and locate
566 unused parts of the compiler. With LEVEL, specify
567 optimization. Values are opt, noopt,
569 [case "${enableval}" in
571 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
574 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
577 # a.k.a. --disable-coverage
581 AC_MSG_ERROR(unknown coverage setting $enableval)
585 AC_SUBST(coverage_flags)
587 AC_ARG_ENABLE(gather-detailed-mem-stats,
588 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
589 [enable detailed memory allocation stats gathering])], [],
590 [enable_gather_detailed_mem_stats=no])
591 if test x$enable_gather_detailed_mem_stats = xyes ; then
592 AC_DEFINE(GATHER_STATISTICS, 1,
593 [Define to enable detailed memory allocation stats gathering.])
596 # -------------------------------
597 # Miscenalleous configure options
598 # -------------------------------
600 # See if we are building gcc with C++.
601 AC_ARG_ENABLE(build-with-cxx,
602 [AS_HELP_STRING([--enable-build-with-cxx],
603 [build with C++ compiler instead of C compiler])],
604 ENABLE_BUILD_WITH_CXX=$enableval,
605 ENABLE_BUILD_WITH_CXX=no)
606 AC_SUBST(ENABLE_BUILD_WITH_CXX)
607 if test "$ENABLE_BUILD_WITH_CXX" = "yes"; then
608 AC_DEFINE(ENABLE_BUILD_WITH_CXX, 1,
609 [Define if building with C++.])
614 [AS_HELP_STRING([--with-stabs],
615 [arrange to use stabs instead of host debug format])],
619 # Determine whether or not multilibs are enabled.
620 AC_ARG_ENABLE(multilib,
621 [AS_HELP_STRING([--enable-multilib],
622 [enable library support for multiple ABIs])],
623 [], [enable_multilib=yes])
624 AC_SUBST(enable_multilib)
626 # Enable __cxa_atexit for C++.
627 AC_ARG_ENABLE(__cxa_atexit,
628 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
631 # Enable C extension for decimal float if target supports it.
632 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
634 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
635 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
636 [Define to 1 to enable decimal float extension to C.])
638 # Use default_decimal_float for dependency.
639 enable_decimal_float=$default_decimal_float
641 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
642 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
643 [Define to 1 to specify that we are using the BID decimal floating
644 point format instead of DPD])
646 # Enable C extension for fixed-point arithmetic.
647 AC_ARG_ENABLE(fixed-point,
648 [AS_HELP_STRING([--enable-fixed-point],
649 [enable fixed-point arithmetic extension to C])],
654 enable_fixed_point=yes
660 AC_MSG_WARN([fixed-point is not supported on IRIX, ignored])
661 enable_fixed_point=no
664 enable_fixed_point=yes
669 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
670 enable_fixed_point=no
674 AC_SUBST(enable_fixed_point)
676 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
677 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
678 [Define to 1 to enable fixed-point arithmetic extension to C.])
681 # Pass with no value to take the default
682 # Pass with a value to specify a thread package
683 AC_ARG_ENABLE(threads,
684 [AS_HELP_STRING([[--enable-threads[=LIB]]],
685 [enable thread usage for target GCC,
686 using LIB thread package])],,
690 [AS_HELP_STRING([--enable-tls],
691 [enable or disable generation of tls code
692 overriding the assembler check for tls support])],
696 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
697 Valid choices are 'yes' and 'no'.]) ;;
701 AC_ARG_ENABLE(objc-gc,
702 [AS_HELP_STRING([--enable-objc-gc],
703 [enable the use of Boehm's garbage collector with
704 the GNU Objective-C runtime])],
705 if test x$enable_objc_gc = xno; then
713 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
714 dwarf2="$with_dwarf2",
717 AC_ARG_ENABLE(shared,
718 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
720 case $enable_shared in
724 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
725 for pkg in $enableval; do
726 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
733 ], [enable_shared=yes])
734 AC_SUBST(enable_shared)
736 AC_ARG_WITH([native-system-header-dir],
737 [ --with-native-system-header-dir=dir
738 use dir as the directory to look for standard
739 system header files in. Defaults to /usr/include.],
741 case ${with_native_system_header_dir} in
742 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
743 /* | [[A-Za-z]]:[[\\/]]*) ;;
744 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
746 configured_native_system_header_dir="${withval}"
747 ], [configured_native_system_header_dir=])
749 AC_ARG_WITH(build-sysroot,
750 [AS_HELP_STRING([--with-build-sysroot=sysroot],
751 [use sysroot as the system root during the build])],
752 [if test x"$withval" != x ; then
753 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
755 [SYSROOT_CFLAGS_FOR_TARGET=])
756 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
759 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
760 [search for usr/lib, usr/include, et al, within DIR])],
762 case ${with_sysroot} in
763 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
764 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
767 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
768 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
770 if test "x$prefix" = xNONE; then
771 test_prefix=/usr/local
775 if test "x$exec_prefix" = xNONE; then
776 test_exec_prefix=$test_prefix
778 test_exec_prefix=$exec_prefix
780 case ${TARGET_SYSTEM_ROOT} in
781 "${test_prefix}"|"${test_prefix}/"*|\
782 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
783 '${prefix}'|'${prefix}/'*|\
784 '${exec_prefix}'|'${exec_prefix}/'*)
785 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
786 TARGET_SYSTEM_ROOT_DEFINE="$t"
791 TARGET_SYSTEM_ROOT_DEFINE=
792 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
794 AC_SUBST(TARGET_SYSTEM_ROOT)
795 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
796 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
799 [AS_HELP_STRING([--with-specs=SPECS],
800 [add SPECS to driver command-line processing])],
801 [CONFIGURE_SPECS=$withval],
804 AC_SUBST(CONFIGURE_SPECS)
806 ACX_PKGVERSION([GCC])
807 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
809 # Sanity check enable_languages in case someone does not run the toplevel
810 # configure # script.
811 AC_ARG_ENABLE(languages,
812 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
813 [case ,${enable_languages}, in
815 # go safe -- we cannot be much sure without the toplevel
817 # analysis of which target libs are present and usable
821 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
826 enable_languages=c,${enable_languages}
829 [enable_languages=c])
831 AC_ARG_WITH(multilib-list,
832 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
834 with_multilib_list=default)
836 # -------------------------
837 # Checks for other programs
838 # -------------------------
842 # Find some useful tools
844 # We need awk to create options.c and options.h.
845 # Bail out if it's missing.
847 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
854 AC_SUBST(ranlib_flags)
858 # See if cmp has --ignore-initial.
859 gcc_AC_PROG_CMP_IGNORE_INITIAL
861 # See if we have the mktemp command.
862 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
864 # See if makeinfo has been installed and is modern enough
865 # that we can use it.
866 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
867 [GNU texinfo.* \([0-9][0-9.]*\)],
868 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
869 if test $gcc_cv_prog_makeinfo_modern = no; then
871 *** Makeinfo is missing or too old.
872 *** Info documentation will not be built.])
879 # Is pod2man recent enough to regenerate manpages?
880 AC_MSG_CHECKING([for recent Pod::Man])
881 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
883 GENERATED_MANPAGES=generated-manpages
888 AC_SUBST(GENERATED_MANPAGES)
890 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
893 dnl Don't use AC_PROG_LEX; we insist on flex.
894 dnl LEXLIB is not useful in gcc.
895 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
898 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
900 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
901 # check for build == host before using them.
904 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
905 && test -d ../binutils ; then
906 NM='${objdir}/../binutils/nm-new'
908 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
912 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
913 && test -d ../binutils ; then
914 AR='${objdir}/../binutils/ar'
916 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
920 # --------------------
921 # Checks for C headers
922 # --------------------
924 # Need to reject headers which give warnings, so that the -Werror bootstrap
925 # works later. *sigh* This needs to come before all header checks.
932 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
933 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
934 sys/resource.h sys/param.h sys/times.h sys/stat.h \
935 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
937 # Check for thread headers.
938 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
939 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
941 # These tests can't be done till we know if we have limits.h.
945 # ----------------------
946 # Checks for C++ headers
947 # ----------------------
949 dnl Autoconf will give an error in the configure script if there is no
950 dnl C++ preprocessor. Hack to prevent that.
951 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
953 m4_popdef([AC_MSG_ERROR])[]dnl
957 AC_CHECK_HEADERS(unordered_map)
958 AC_CHECK_HEADERS(tr1/unordered_map)
959 AC_CHECK_HEADERS(ext/hash_map)
968 # These libraries may be used by collect2.
969 # We may need a special search path to get them linked.
970 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
972 for libs in '' -lld -lmld \
973 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
974 '-L/usr/lib/cmplrs/cc3.11 -lmld'
977 AC_TRY_LINK_FUNC(ldopen,
978 [gcc_cv_collect2_libs="$libs"; break])
981 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
982 case $gcc_cv_collect2_libs in
984 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
986 AC_SUBST(COLLECT2_LIBS)
988 # When building Ada code on Alpha, we need exc_resume which is usually in
989 # -lexc. So test for it.
992 AC_SEARCH_LIBS(exc_resume, exc)
995 AC_SUBST(GNAT_LIBEXC)
997 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1000 AC_SEARCH_LIBS(kstat_open, kstat)
1001 EXTRA_GCC_LIBS="$LIBS"
1003 AC_SUBST(EXTRA_GCC_LIBS)
1005 # Some systems put ldexp and frexp in libm instead of libc; assume
1006 # they're both in the same place. jcf-dump needs them.
1009 AC_SEARCH_LIBS(ldexp, m)
1014 # Use <inttypes.h> only if it exists,
1015 # doesn't clash with <sys/types.h>, and declares intmax_t.
1016 AC_MSG_CHECKING(for inttypes.h)
1017 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1018 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1019 [[#include <sys/types.h>
1020 #include <inttypes.h>]],
1021 [[intmax_t i = -1;]])],
1022 [gcc_cv_header_inttypes_h=yes],
1023 [gcc_cv_header_inttypes_h=no])])
1024 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1025 if test $gcc_cv_header_inttypes_h = yes; then
1026 AC_DEFINE(HAVE_INTTYPES_H, 1,
1027 [Define if you have a working <inttypes.h> header file.])
1030 dnl Disabled until we have a complete test for buggy enum bitfields.
1031 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1033 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1034 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1035 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1036 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1037 putchar_unlocked putc_unlocked)
1038 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1039 sysconf strsignal getrusage nl_langinfo \
1040 gettimeofday mbstowcs wcswidth mmap setlocale \
1041 gcc_UNLOCKED_FUNCS madvise)
1043 if test x$ac_cv_func_mbstowcs = xyes; then
1044 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1045 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1051 [gcc_cv_func_mbstowcs_works=yes],
1052 [gcc_cv_func_mbstowcs_works=no],
1053 [gcc_cv_func_mbstowcs_works=yes])])
1054 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1055 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1056 [Define this macro if mbstowcs does not crash when its
1057 first argument is NULL.])
1061 AC_CHECK_TYPE(ssize_t, int)
1062 AC_CHECK_TYPE(caddr_t, char *)
1064 gcc_AC_FUNC_MMAP_BLACKLIST
1068 # Under VMS, vfork works very differently than on Unix. The standard test
1069 # won't work, and it isn't easily adaptable. It makes more sense to
1071 ac_cv_func_vfork_works=yes
1076 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1077 # iconv() prototype.
1078 AS_IF([test "$ENABLE_BUILD_WITH_CXX" = "yes"],
1079 [AC_LANG_PUSH([C++])
1081 AC_LANG_POP([C++])],
1084 # Until we have in-tree GNU iconv:
1086 AC_SUBST(LIBICONV_DEP)
1092 # We will need to find libiberty.h and ansidecl.h
1093 saved_CFLAGS="$CFLAGS"
1094 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1095 saved_CXXFLAGS="$CXXFLAGS"
1096 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include"
1097 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1098 strsignal strstr stpcpy strverscmp \
1099 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1100 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1101 #include "ansidecl.h"
1102 #include "system.h"])
1104 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1105 #include "ansidecl.h"
1107 #ifdef HAVE_SYS_RESOURCE_H
1108 #include <sys/resource.h>
1112 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1113 #include "ansidecl.h"
1115 #ifdef HAVE_SYS_RESOURCE_H
1116 #include <sys/resource.h>
1118 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1119 [Define to `long' if <sys/resource.h> doesn't define.])])
1121 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1122 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1123 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1124 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1125 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1126 #include "ansidecl.h"
1135 gcc_AC_CHECK_DECLS(times, , ,[
1136 #include "ansidecl.h"
1138 #ifdef HAVE_SYS_TIMES_H
1139 #include <sys/times.h>
1143 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1144 #include "ansidecl.h"
1149 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1151 AS_IF([test "$ENABLE_BUILD_WITH_CXX" = "yes"],
1152 [AC_LANG_PUSH([C++])
1153 gcc_AC_CHECK_DECLS(madvise, , ,[
1154 #include "ansidecl.h"
1157 AC_LANG_POP([C++])],
1158 [gcc_AC_CHECK_DECLS(madvise, , ,[
1159 #include "ansidecl.h"
1164 # More time-related stuff.
1165 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1166 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1167 #include "ansidecl.h"
1169 #ifdef HAVE_SYS_TIMES_H
1170 #include <sys/times.h>
1172 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1173 if test $ac_cv_struct_tms = yes; then
1174 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1175 [Define if <sys/times.h> defines struct tms.])
1178 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1179 # revisit after autoconf 2.50.
1180 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1181 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1182 #include "ansidecl.h"
1184 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1185 if test $gcc_cv_type_clock_t = yes; then
1186 AC_DEFINE(HAVE_CLOCK_T, 1,
1187 [Define if <time.h> defines clock_t.])
1190 # Check if F_SETLKW is supported by fcntl.
1191 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1192 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1193 #include <fcntl.h>]], [[
1199 return fcntl (1, F_SETLKW, &fl);]])],
1200 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1201 if test $ac_cv_f_setlkw = yes; then
1202 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1203 [Define if F_SETLKW supported by fcntl.])
1206 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1207 CFLAGS="$saved_CFLAGS"
1208 CXXFLAGS="$saved_CXXFLAGS"
1210 # mkdir takes a single argument on some systems.
1211 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1219 # With Setjmp/Longjmp based exception handling.
1220 AC_ARG_ENABLE(sjlj-exceptions,
1221 [AS_HELP_STRING([--enable-sjlj-exceptions],
1222 [arrange to use setjmp/longjmp exception handling])],
1225 if test $enableval != yes; then
1226 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1231 force_sjlj_exceptions=yes],
1234 force_sjlj_exceptions=yes
1238 force_sjlj_exceptions=no
1241 if test $force_sjlj_exceptions = yes; then
1242 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1243 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1244 [Define 0/1 to force the choice for exception handling model.])
1247 # --------------------------------------------------------
1248 # Build, host, and target specific configuration fragments
1249 # --------------------------------------------------------
1251 # Collect build-machine-specific information.
1252 . ${srcdir}/config.build
1254 # Collect host-machine-specific information.
1255 . ${srcdir}/config.host
1259 # Collect target-machine-specific information.
1260 . ${srcdir}/config.gcc
1262 extra_objs="${host_extra_objs} ${extra_objs}"
1263 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1265 # Default the target-machine variables that were not explicitly set.
1266 if test x"$tm_file" = x
1267 then tm_file=$cpu_type/$cpu_type.h; fi
1269 if test x"$extra_headers" = x
1270 then extra_headers=; fi
1272 if test x$md_file = x
1273 then md_file=$cpu_type/$cpu_type.md; fi
1275 if test x$out_file = x
1276 then out_file=$cpu_type/$cpu_type.c; fi
1278 if test x"$tmake_file" = x
1279 then tmake_file=$cpu_type/t-$cpu_type
1282 # Support --enable-initfini-array.
1283 if test x$enable_initfini_array != xno; then
1284 tm_file="${tm_file} initfini-array.h"
1287 if test x"$dwarf2" = xyes
1288 then tm_file="$tm_file tm-dwarf2.h"
1291 # Say what files are being used for the output code and MD file.
1292 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1293 echo "Using \`$srcdir/config/$md_file' as machine description file."
1295 # If any of the xm_file variables contain nonexistent files, warn
1296 # about them and drop them.
1299 for x in $build_xm_file; do
1300 if test -f $srcdir/config/$x
1302 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1308 for x in $host_xm_file; do
1309 if test -f $srcdir/config/$x
1311 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1317 for x in $xm_file; do
1318 if test -f $srcdir/config/$x
1320 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1326 for f in $tm_file; do
1329 if test $count = ax; then
1330 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1332 echo "Using the following target machine macro files:"
1333 for f in $tm_file; do
1334 echo " $srcdir/config/$f"
1338 if test x$need_64bit_hwint = xyes; then
1339 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1340 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1343 if test x$use_long_long_for_widest_fast_int = xyes; then
1344 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1345 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1346 efficiently supported by the host hardware.])
1349 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1350 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1352 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1353 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1356 for f in $host_xm_file; do
1359 if test $count = a; then
1361 elif test $count = ax; then
1362 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1364 echo "Using the following host machine macro files:"
1365 for f in $host_xm_file; do
1366 echo " $srcdir/config/$f"
1369 echo "Using ${out_host_hook_obj} for host machine hooks."
1371 if test "$host_xm_file" != "$build_xm_file"; then
1373 for f in $build_xm_file; do
1376 if test $count = a; then
1378 elif test $count = ax; then
1379 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1381 echo "Using the following build machine macro files:"
1382 for f in $build_xm_file; do
1383 echo " $srcdir/config/$f"
1388 if test -n "$configured_native_system_header_dir"; then
1389 native_system_header_dir=$configured_native_system_header_dir
1391 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1392 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1396 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1397 gcc_cv_mcontext_underscores,
1399 #include <sys/cdefs.h>
1400 #include <sys/signal.h>
1401 #include <ucontext.h>
1402 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1404 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1405 if test $gcc_cv_mcontext_underscores = yes; then
1406 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1407 [mcontext_t fields start with __])
1416 # Check if a valid thread package
1417 case ${enable_threads} in
1420 target_thread_file='single'
1424 target_thread_file='single'
1426 aix | dce | lynx | mipssde | posix | rtems | \
1427 single | tpf | vxworks | win32)
1428 target_thread_file=${enable_threads}
1431 echo "${enable_threads} is an unknown thread package" 1>&2
1436 if test x${thread_file} = x; then
1437 # No thread file set by target-specific clauses in config.gcc,
1438 # so use file chosen by default logic above
1439 thread_file=${target_thread_file}
1447 if test x$enable___cxa_atexit = xyes || \
1448 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1449 if test x$host = x$target; then
1451 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1452 # keyed to flag_use_cxa_atexit
1457 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1458 [echo "__cxa_atexit can't be enabled on this target"])
1462 # We can't check for __cxa_atexit when building a cross, so assume
1466 if test x$use_cxa_atexit = xyes; then
1467 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1468 [Define if you want to use __cxa_atexit, rather than atexit, to
1469 register C++ destructors for local statics and global objects.
1470 This is essential for fully standards-compliant handling of
1471 destructors, but requires __cxa_atexit in libc.])
1475 # Look for a file containing extra machine modes.
1476 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1477 extra_modes_file='$(srcdir)'/config/${extra_modes}
1478 AC_SUBST(extra_modes_file)
1479 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1480 [Define to the name of a file containing a list of extra machine modes
1481 for this architecture.])
1484 # Convert extra_options into a form suitable for Makefile use.
1487 for f in $extra_options; do
1488 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1489 all_opt_files="$all_opt_files $srcdir/config/$f"
1491 AC_SUBST(extra_opt_files)
1493 # auto-host.h is the file containing items generated by autoconf and is
1494 # the first file included by config.h.
1495 # If host=build, it is correct to have bconfig include auto-host.h
1496 # as well. If host!=build, we are in error and need to do more
1497 # work to find out the build config parameters.
1498 if test x$host = x$build
1500 build_auto=auto-host.h
1502 # We create a subdir, then run autoconf in the subdir.
1503 # To prevent recursion we set host and build for the new
1504 # invocation of configure to the build for this invocation
1511 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1512 *) realsrcdir=../${srcdir};;
1514 saved_CFLAGS="${CFLAGS}"
1515 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1516 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1517 ${realsrcdir}/configure \
1518 --enable-languages=${enable_languages-all} \
1519 --target=$target_alias --host=$build_alias --build=$build_alias
1520 CFLAGS="${saved_CFLAGS}"
1522 # We just finished tests for the build machine, so rename
1523 # the file auto-build.h in the gcc directory.
1524 mv auto-host.h ../auto-build.h
1527 build_auto=auto-build.h
1529 AC_SUBST(build_subdir)
1531 tm_file="${tm_file} defaults.h"
1532 tm_p_file="${tm_p_file} tm-preds.h"
1533 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1534 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1535 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1536 # put this back in temporarily.
1537 xm_file="auto-host.h ansidecl.h ${xm_file}"
1544 # Compile in configure arguments.
1545 if test -f configargs.h ; then
1546 # Being re-configured.
1547 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1548 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1550 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1553 # Double all backslashes and backslash all quotes to turn
1554 # gcc_config_arguments into a C string.
1555 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1556 $gcc_config_arguments
1558 gcc_config_arguments_str=`cat conftest.out`
1561 cat > configargs.h <<EOF
1562 /* Generated automatically. */
1563 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1564 static const char thread_model[] = "$thread_file";
1566 static const struct {
1567 const char *name, *value;
1568 } configure_default_options[] = $configure_default_options;
1573 gcc_BASEVER=`cat $srcdir/BASE-VER`
1574 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1575 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1576 if test -f $srcdir/REVISION ; then
1577 gcc_REVISION=`cat $srcdir/REVISION`
1581 cat > plugin-version.h <<EOF
1582 #include "configargs.h"
1584 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1585 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1586 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1587 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1589 static char basever[] = "$gcc_BASEVER";
1590 static char datestamp[] = "$gcc_DATESTAMP";
1591 static char devphase[] = "$gcc_DEVPHASE";
1592 static char revision[] = "$gcc_REVISION";
1594 /* FIXME plugins: We should make the version information more precise.
1595 One way to do is to add a checksum. */
1597 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1599 configuration_arguments};
1603 # Internationalization
1604 ZW_GNU_GETTEXT_SISTER_DIR
1606 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1607 # -liconv on the link line twice.
1608 case "$LIBINTL" in *$LIBICONV*)
1612 AC_ARG_ENABLE(secureplt,
1613 [AS_HELP_STRING([--enable-secureplt],
1614 [enable -msecure-plt by default for PowerPC])],
1617 AC_ARG_ENABLE(leading-mingw64-underscores,
1618 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1619 [enable leading underscores on 64 bit mingw targets]),
1621 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1622 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1623 [Define if we should use leading underscore on 64 bit mingw targets])])
1626 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1629 AC_ARG_ENABLE(frame-pointer,
1630 [AS_HELP_STRING([--enable-frame-pointer],
1631 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1634 linux* | darwin[[8912]]*)
1635 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1637 enable_frame_pointer=no
1640 enable_frame_pointer=yes
1645 # Windows32 Registry support for specifying GCC installation paths.
1646 AC_ARG_ENABLE(win32-registry,
1647 [AS_HELP_STRING([--disable-win32-registry],
1648 [disable lookup of installation paths in the
1649 Registry on Windows hosts])
1650 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1651 AS_HELP_STRING([--enable-win32-registry=KEY],
1652 [use KEY instead of GCC version as the last portion
1653 of the registry key])],,)
1656 win32 | pe | cygwin* | mingw32* | uwin*)
1657 if test "x$enable_win32_registry" != xno; then
1658 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1661 if test "x$enable_win32_registry" != xno; then
1662 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1663 [Define to 1 if installation paths should be looked up in the Windows
1664 Registry. Ignored on non-Windows hosts.])
1666 if test "x$enable_win32_registry" != xyes \
1667 && test "x$enable_win32_registry" != x; then
1668 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1669 [Define to be the last component of the Windows registry key under which
1670 to look for installation paths. The full key used will be
1671 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1672 The default is the GCC version number.])
1678 # Get an absolute path to the GCC top-level source directory
1679 holddir=`${PWDCMD-pwd}`
1681 topdir=`${PWDCMD-pwd}`
1684 # Conditionalize the makefile for this host machine.
1686 for f in ${host_xmake_file}
1688 if test -f ${srcdir}/config/$f
1690 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1694 # Conditionalize the makefile for this target machine.
1696 for f in ${tmake_file}
1698 if test -f ${srcdir}/config/$f
1700 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1703 tmake_file="${tmake_file_}"
1705 out_object_file=`basename $out_file .c`.o
1706 common_out_object_file=`basename $common_out_file .c`.o
1708 tm_file_list="options.h"
1709 tm_include_list="options.h insn-constants.h"
1710 for f in $tm_file; do
1713 f=`echo $f | sed 's/^..//'`
1714 tm_file_list="${tm_file_list} $f"
1715 tm_include_list="${tm_include_list} $f"
1718 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1719 tm_include_list="${tm_include_list} $f"
1722 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1723 tm_include_list="${tm_include_list} config/$f"
1730 for f in $tm_p_file; do
1733 tm_p_file_list="${tm_p_file_list} $f"
1734 tm_p_include_list="${tm_p_include_list} $f"
1737 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1738 tm_p_include_list="${tm_p_include_list} config/$f"
1744 for f in $xm_file; do
1747 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1748 xm_include_list="${xm_include_list} $f"
1751 xm_file_list="${xm_file_list} $f"
1752 xm_include_list="${xm_include_list} $f"
1755 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1756 xm_include_list="${xm_include_list} config/$f"
1762 host_xm_include_list=
1763 for f in $host_xm_file; do
1766 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1767 host_xm_include_list="${host_xm_include_list} $f"
1770 host_xm_file_list="${host_xm_file_list} $f"
1771 host_xm_include_list="${host_xm_include_list} $f"
1774 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1775 host_xm_include_list="${host_xm_include_list} config/$f"
1781 for f in $build_xm_file; do
1784 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1785 build_xm_include_list="${build_xm_include_list} $f"
1787 auto-build.h | auto-host.h )
1788 build_xm_file_list="${build_xm_file_list} $f"
1789 build_xm_include_list="${build_xm_include_list} $f"
1792 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1793 build_xm_include_list="${build_xm_include_list} config/$f"
1798 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1799 # cross-compiler which does not use the native headers and libraries.
1800 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1801 CROSS= AC_SUBST(CROSS)
1802 ALL=all.internal AC_SUBST(ALL)
1803 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1805 if test "x$with_build_sysroot" != x; then
1806 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1808 # This value is used, even on a native system, because
1809 # CROSS_SYSTEM_HEADER_DIR is just
1810 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1811 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1814 if test x$host != x$target
1816 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1818 SYSTEM_HEADER_DIR=$build_system_header_dir
1819 case "$host","$target" in
1820 # Darwin crosses can use the host system's libraries and headers,
1821 # because of the fat library support. Of course, it must be the
1822 # same version of Darwin on both sides. Allow the user to
1823 # just say --target=foo-darwin without a version number to mean
1824 # "the version on this system".
1825 *-*-darwin*,*-*-darwin*)
1826 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1827 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1828 if test $hostos = $targetos -o $targetos = darwin ; then
1830 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1835 i?86-*-*,x86_64-*-* \
1836 | powerpc*-*-*,powerpc64*-*-*)
1837 CROSS="$CROSS -DNATIVE_CROSS" ;;
1842 if test "x$with_headers" = x; then
1849 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1850 SYSTEM_HEADER_DIR=$build_system_header_dir
1853 # If this is a cross-compiler that does not
1854 # have its own set of headers then define
1857 # If this is using newlib, without having the headers available now,
1858 # then define inhibit_libc in LIBGCC2_CFLAGS.
1859 # This prevents libgcc2 from containing any code which requires libc
1861 : ${inhibit_libc=false}
1862 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1863 test x$with_newlib = xyes ; } &&
1864 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1867 AC_SUBST(inhibit_libc)
1869 # When building gcc with a cross-compiler, we need to adjust things so
1870 # that the generator programs are still built with the native compiler.
1871 # Also, we cannot run fixincludes.
1873 # These are the normal (build=host) settings:
1874 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1875 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1876 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1877 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1879 # And these apply if build != host, or we are generating coverage data
1880 if test x$build != x$host || test "x$coverage_flags" != x
1882 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1883 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1886 # Expand extra_headers to include complete path.
1887 # This substitutes for lots of t-* files.
1889 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1890 for file in ${extra_headers} ; do
1891 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1894 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1895 if test x"$use_gcc_tgmath" = xyes
1896 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1899 # Define collect2 in Makefile.
1900 case $host_can_use_collect2 in
1902 *) collect2='collect2$(exeext)' ;;
1904 AC_SUBST([collect2])
1906 # Add a definition of USE_COLLECT2 if system wants one.
1907 case $use_collect2 in
1908 no) use_collect2= ;;
1911 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1912 xm_defines="${xm_defines} USE_COLLECT2"
1913 case $host_can_use_collect2 in
1915 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1921 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1922 [Define to the name of the LTO plugin DSO that must be
1923 passed to the linker's -plugin=LIB option.])
1925 # ---------------------------
1926 # Assembler & linker features
1927 # ---------------------------
1929 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1930 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1931 # However when ld-new is first executed from the build tree, libtool will
1932 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1933 # to the build tree. While doing this we need to use the previous-stage
1934 # linker, or we have an infinite loop. The presence of a shell script as
1935 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1936 # the gcc/collect-ld script. So we need to know how libtool works, or
1937 # exec-tool will fail.
1939 m4_defun([_LT_CONFIG_COMMANDS], [])
1942 AC_SUBST(enable_fast_install)
1944 # Identify the assembler which will work hand-in-glove with the newly
1945 # built GCC, so that we can examine its features. This is the assembler
1946 # which will be driven by the driver program.
1948 # If build != host, and we aren't building gas in-tree, we identify a
1949 # build->target assembler and hope that it will have the same features
1950 # as the host->target assembler we'll be using.
1951 gcc_cv_gas_major_version=
1952 gcc_cv_gas_minor_version=
1953 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1955 m4_pattern_allow([AS_FOR_TARGET])dnl
1956 AS_VAR_SET_IF(gcc_cv_as,, [
1957 if test -x "$DEFAULT_ASSEMBLER"; then
1958 gcc_cv_as="$DEFAULT_ASSEMBLER"
1959 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1960 && test -f ../gas/Makefile \
1961 && test x$build = x$host; then
1962 gcc_cv_as=../gas/as-new$build_exeext
1963 elif test -x as$build_exeext; then
1964 # Build using assembler in the current directory.
1965 gcc_cv_as=./as$build_exeext
1966 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1967 gcc_cv_as="$AS_FOR_TARGET"
1969 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1972 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1973 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1974 case "$ORIGINAL_AS_FOR_TARGET" in
1975 ./as | ./as$build_exeext) ;;
1976 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1979 AC_MSG_CHECKING(what assembler to use)
1980 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1981 # Single tree build which includes gas. We want to prefer it
1982 # over whatever linker top-level may have detected, since
1983 # we'll use what we're building after installation anyway.
1984 AC_MSG_RESULT(newly built gas)
1986 _gcc_COMPUTE_GAS_VERSION
1987 in_tree_gas_is_elf=no
1988 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1989 || (grep 'obj_format = multi' ../gas/Makefile \
1990 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1992 in_tree_gas_is_elf=yes
1995 AC_MSG_RESULT($gcc_cv_as)
1999 # Identify the linker which will work hand-in-glove with the newly
2000 # built GCC, so that we can examine its features. This is the linker
2001 # which will be driven by the driver program.
2003 # If build != host, and we aren't building gas in-tree, we identify a
2004 # build->target linker and hope that it will have the same features
2005 # as the host->target linker we'll be using.
2006 gcc_cv_gld_major_version=
2007 gcc_cv_gld_minor_version=
2008 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2009 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2011 AS_VAR_SET_IF(gcc_cv_ld,, [
2012 if test -x "$DEFAULT_LINKER"; then
2013 gcc_cv_ld="$DEFAULT_LINKER"
2014 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2015 && test -f ../ld/Makefile \
2016 && test x$build = x$host; then
2017 gcc_cv_ld=../ld/ld-new$build_exeext
2018 elif test -x collect-ld$build_exeext; then
2019 # Build using linker in the current directory.
2020 gcc_cv_ld=./collect-ld$build_exeext
2021 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2022 gcc_cv_ld="$LD_FOR_TARGET"
2024 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2027 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2028 PLUGIN_LD=`basename $gcc_cv_ld`
2029 AC_ARG_WITH(plugin-ld,
2030 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2031 [if test x"$withval" != x; then
2032 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2033 PLUGIN_LD="$withval"
2035 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2036 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
2038 # Check to see if we are using gold instead of ld
2039 AC_MSG_CHECKING(whether we are using gold)
2041 if test x$gcc_cv_ld != x; then
2042 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2043 | grep "GNU gold" > /dev/null; then
2047 AC_MSG_RESULT($ld_is_gold)
2049 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2050 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2051 case "$ORIGINAL_LD_FOR_TARGET" in
2052 ./collect-ld | ./collect-ld$build_exeext) ;;
2053 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2056 AC_MSG_CHECKING(what linker to use)
2057 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2058 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2059 # Single tree build which includes ld. We want to prefer it
2060 # over whatever linker top-level may have detected, since
2061 # we'll use what we're building after installation anyway.
2062 AC_MSG_RESULT(newly built ld)
2064 in_tree_ld_is_elf=no
2065 if (grep 'EMUL = .*elf' ../ld/Makefile \
2066 || grep 'EMUL = .*linux' ../ld/Makefile \
2067 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2068 in_tree_ld_is_elf=yes
2069 elif test "$ld_is_gold" = yes; then
2070 in_tree_ld_is_elf=yes
2072 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
2075 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
2076 if test x$gcc_cv_gld_version != x; then
2080 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2081 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2084 AC_MSG_RESULT($gcc_cv_ld)
2088 # Figure out what nm we will be using.
2089 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2090 AS_VAR_SET_IF(gcc_cv_nm,, [
2091 if test -f $gcc_cv_binutils_srcdir/configure.in \
2092 && test -f ../binutils/Makefile \
2093 && test x$build = x$host; then
2094 gcc_cv_nm=../binutils/nm-new$build_exeext
2095 elif test -x nm$build_exeext; then
2096 gcc_cv_nm=./nm$build_exeext
2097 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2098 gcc_cv_nm="$NM_FOR_TARGET"
2100 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2103 AC_MSG_CHECKING(what nm to use)
2104 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2105 # Single tree build which includes binutils.
2106 AC_MSG_RESULT(newly built nm)
2109 AC_MSG_RESULT($gcc_cv_nm)
2113 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2114 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2115 case "$ORIGINAL_NM_FOR_TARGET" in
2116 ./nm | ./nm$build_exeext) ;;
2117 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2121 # Figure out what objdump we will be using.
2122 AS_VAR_SET_IF(gcc_cv_objdump,, [
2123 if test -f $gcc_cv_binutils_srcdir/configure.in \
2124 && test -f ../binutils/Makefile \
2125 && test x$build = x$host; then
2126 # Single tree build which includes binutils.
2127 gcc_cv_objdump=../binutils/objdump$build_exeext
2128 elif test -x objdump$build_exeext; then
2129 gcc_cv_objdump=./objdump$build_exeext
2130 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2131 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2133 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2136 AC_MSG_CHECKING(what objdump to use)
2137 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2138 # Single tree build which includes binutils.
2139 AC_MSG_RESULT(newly built objdump)
2140 elif test x$gcc_cv_objdump = x; then
2141 AC_MSG_RESULT(not found)
2143 AC_MSG_RESULT($gcc_cv_objdump)
2146 # Figure out what readelf we will be using.
2147 AS_VAR_SET_IF(gcc_cv_readelf,, [
2148 if test -f $gcc_cv_binutils_srcdir/configure.in \
2149 && test -f ../binutils/Makefile \
2150 && test x$build = x$host; then
2151 # Single tree build which includes binutils.
2152 gcc_cv_readelf=../binutils/readelf$build_exeext
2153 elif test -x readelf$build_exeext; then
2154 gcc_cv_readelf=./readelf$build_exeext
2156 AC_PATH_PROG(gcc_cv_readelf, readelf)
2159 AC_MSG_CHECKING(what readelf to use)
2160 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2161 # Single tree build which includes binutils.
2162 AC_MSG_RESULT(newly built readelf)
2163 elif test x$gcc_cv_readelf = x; then
2164 AC_MSG_RESULT(not found)
2166 AC_MSG_RESULT($gcc_cv_readelf)
2169 # Figure out what assembler alignment features are present.
2170 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2174 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2175 [Define if your assembler supports .balign and .p2align.])])
2177 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2180 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2181 [Define if your assembler supports specifying the maximum number
2182 of bytes to skip when using the GAS .p2align command.])])
2184 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2187 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2188 [Define if your assembler supports .literal16.])])
2190 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2192 [conftest_label1: .word 0
2194 conftest_label2: .word 0
2196 [if test x$gcc_cv_nm != x; then
2197 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2198 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2199 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2201 else gcc_cv_as_subsection_m1=yes
2203 rm -f conftest.nm1 conftest.nm2
2205 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2206 [Define if your assembler supports .subsection and .subsection -1 starts
2207 emitting at the beginning of your section.])])
2209 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2212 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2214 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2216 [ .weakref foobar, barfnot],,
2217 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2219 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2222 .NSUBSPA $CODE$,COMDAT],,
2223 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2225 # .hidden needs to be supported in both the assembler and the linker,
2226 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2227 # This is irritatingly difficult to feature test for; we have to check the
2228 # date string after the version number. If we've got an in-tree
2229 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2231 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2232 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2236 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2237 # STV_HIDDEN, so disable .hidden support if so.
2239 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2240 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2241 cat > conftest.s <<EOF
2248 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2249 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2250 grep '\.hidden default' > /dev/null; then
2253 gcc_cv_as_hidden=yes
2256 # Assume bug is present if objdump is missing.
2261 gcc_cv_as_hidden=yes
2266 # Darwin as has some visibility support, though with a different syntax.
2267 gcc_cv_as_hidden=yes
2271 # gnu_indirect_function type is an extension proposed at
2272 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2273 # selection of function implementation
2274 AC_ARG_ENABLE(gnu-indirect-function,
2275 [AS_HELP_STRING([--enable-gnu-indirect-function],
2276 [enable the use of the @gnu_indirect_function to glibc systems])],
2277 [case $enable_gnu_indirect_function in
2279 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2280 Valid choices are 'yes' and 'no'.]) ;;
2282 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2283 if test x$enable_gnu_indirect_function = xyes; then
2284 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2285 [Define if your system supports gnu indirect functions.])
2289 if test $in_tree_ld != yes ; then
2290 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2291 if echo "$ld_ver" | grep GNU > /dev/null; then
2292 if test x"$ld_is_gold" = xyes; then
2293 # GNU gold --version looks like this:
2295 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2297 # We extract the binutils version which is more familiar and specific
2298 # than the gold version.
2299 ld_vers=`echo $ld_ver | sed -n \
2300 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2302 # GNU ld --version looks like this:
2304 # GNU ld (GNU Binutils) 2.21.51.20110225
2305 ld_vers=`echo $ld_ver | sed -n \
2306 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2308 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2309 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2310 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2311 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2315 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2318 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2319 # /usr/ccs/bin/ld has been configured.
2320 ld_ver=`$gcc_cv_ld -V 2>&1`
2321 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2322 ld_vers=`echo $ld_ver | sed -n \
2323 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2324 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2325 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2333 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2334 [[if test $in_tree_ld = yes ; then
2336 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2337 && test $in_tree_ld_is_elf = yes; then
2338 gcc_cv_ld_hidden=yes
2341 gcc_cv_ld_hidden=yes
2342 if test x"$ld_is_gold" = xyes; then
2344 elif echo "$ld_ver" | grep GNU > /dev/null; then
2345 if test 0"$ld_date" -lt 20020404; then
2346 if test -n "$ld_date"; then
2347 # If there was date string, but was earlier than 2002-04-04, fail
2349 elif test -z "$ld_vers"; then
2350 # If there was no date string nor ld version number, something is wrong
2353 test -z "$ld_vers_patch" && ld_vers_patch=0
2354 if test "$ld_vers_major" -lt 2; then
2356 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2357 gcc_cv_ld_hidden="no"
2358 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2366 # Darwin ld has some visibility support.
2367 gcc_cv_ld_hidden=yes
2369 hppa64*-*-hpux* | ia64*-*-hpux*)
2370 gcc_cv_ld_hidden=yes
2373 # .hidden support was backported to Solaris 8, starting with ld
2375 if test "$ld_vers_minor" -ge 276; then
2376 gcc_cv_ld_hidden=yes
2381 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2382 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2383 # .symbolic was only added in Solaris 9 12/02.
2384 gcc_cv_ld_hidden=yes
2392 libgcc_visibility=no
2393 AC_SUBST(libgcc_visibility)
2394 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2395 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2396 libgcc_visibility=yes
2397 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2398 [Define if your assembler and linker support .hidden.])
2401 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2402 gcc_cv_ld_ro_rw_mix=unknown
2403 if test $in_tree_ld = yes ; then
2404 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2405 && test $in_tree_ld_is_elf = yes; then
2406 gcc_cv_ld_ro_rw_mix=read-write
2408 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2409 echo '.section myfoosect, "a"' > conftest1.s
2410 echo '.section myfoosect, "aw"' > conftest2.s
2411 echo '.byte 1' >> conftest2.s
2412 echo '.section myfoosect, "a"' > conftest3.s
2413 echo '.byte 0' >> conftest3.s
2414 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2415 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2416 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2417 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2418 conftest2.o conftest3.o > /dev/null 2>&1; then
2419 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2420 | sed -e '/myfoosect/!d' -e N`
2421 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2422 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2423 gcc_cv_ld_ro_rw_mix=read-only
2425 gcc_cv_ld_ro_rw_mix=read-write
2430 rm -f conftest.* conftest[123].*
2433 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2434 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2435 [Define if your linker links a mix of read-only
2436 and read-write sections into a read-write section.])
2438 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2440 gcc_AC_INITFINI_ARRAY
2442 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2443 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2451 [[# GAS versions before 2.11 do not support uleb128,
2452 # despite appearing to.
2453 # ??? There exists an elf-specific test that will crash
2454 # the assembler. Perhaps it's better to figure out whether
2455 # arbitrary sections are supported and try the test.
2456 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2457 if echo "$as_ver" | grep GNU > /dev/null; then
2458 as_vers=`echo $as_ver | sed -n \
2459 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2460 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2461 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2462 if test $as_major -eq 2 && test $as_minor -lt 11
2464 else gcc_cv_as_leb128=yes
2467 [AC_DEFINE(HAVE_AS_LEB128, 1,
2468 [Define if your assembler supports .sleb128 and .uleb128.])])
2470 # Check if we have assembler support for unwind directives.
2471 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2478 .cfi_escape 1, 2, 3, 4, 5
2482 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2483 # read-only and read-write sections, we need to make sure that the
2484 # assembler used emits read-write .eh_frame sections.
2485 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2486 if test "x$gcc_cv_objdump" != x; then
2487 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2488 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2489 gcc_cv_as_cfi_directive=no
2492 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2493 # On Solaris/x86, make sure that GCC and gas agree on using
2494 # read-only .eh_frame sections for 64-bit.
2495 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2496 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2497 sed -e /.eh_frame/!d -e N | \
2498 grep READONLY > /dev/null; then
2499 gcc_cv_as_cfi_directive=yes
2501 gcc_cv_as_cfi_directive=no
2505 gcc_cv_as_cfi_directive=yes
2510 # no objdump, err on the side of caution
2511 gcc_cv_as_cfi_directive=no
2514 gcc_cv_as_cfi_directive=yes
2518 gcc_cv_as_cfi_directive=yes
2521 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2522 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2526 .cfi_adjust_cfa_offset 64
2528 .cfi_adjust_cfa_offset 128
2531 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2532 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2533 gcc_cv_as_cfi_advance_working=yes
2537 # no objdump, err on the side of caution
2538 gcc_cv_as_cfi_advance_working=no
2540 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2541 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2542 [`if test $gcc_cv_as_cfi_directive = yes \
2543 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2544 [Define 0/1 if your assembler supports CFI directives.])
2546 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2547 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2548 gcc_cv_as_cfi_personality_directive, ,,
2551 .cfi_personality 0, symbol
2553 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2554 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2555 then echo 1; else echo 0; fi`],
2556 [Define 0/1 if your assembler supports .cfi_personality.])
2558 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2559 gcc_cv_as_cfi_sections_directive, ,,
2561 .cfi_sections .debug_frame, .eh_frame
2565 win32 | pe | cygwin* | mingw32* | uwin*)
2566 # Need to check that we generated the correct relocation for the
2567 # .debug_frame section. This was fixed for binutils 2.21.
2568 gcc_cv_as_cfi_sections_directive=no
2569 if test "x$gcc_cv_objdump" != x; then
2570 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2571 grep secrel > /dev/null; then
2572 gcc_cv_as_cfi_sections_directive=yes
2577 gcc_cv_as_cfi_sections_directive=yes
2580 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2581 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2582 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2583 then echo 1; else echo 0; fi`],
2584 [Define 0/1 if your assembler supports .cfi_sections.])
2586 # GAS versions up to and including 2.11.0 may mis-optimize
2588 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2596 .section .eh_frame,"aw",@progbits
2598 .4byte .LECIE1-.LSCIE1
2612 .4byte .LEFDE1-.LASFDE1
2614 .4byte .LASFDE1-__FRAME_BEGIN__
2622 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2623 cat > conftest.lit <<EOF
2624 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2625 0010 01000000 12000000 18000000 00000000 ................
2626 0020 08000000 04080000 0044 .........D @&t@
2628 cat > conftest.big <<EOF
2629 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2630 0010 00000001 00000012 00000018 00000000 ................
2631 0020 00000008 04000000 0844 .........D @&t@
2633 # If the assembler didn't choke, and we can objdump,
2634 # and we got the correct data, then succeed.
2635 # The text in the here-document typically retains its unix-style line
2636 # endings, while the output of objdump will use host line endings.
2637 # Therefore, use diff -b for the comparisons.
2638 if test x$gcc_cv_objdump != x \
2639 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2640 | tail -3 > conftest.got \
2641 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2642 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2644 gcc_cv_as_eh_frame=yes
2645 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2646 gcc_cv_as_eh_frame=buggy
2648 # Uh oh, what do we do now?
2649 gcc_cv_as_eh_frame=no
2652 if test $gcc_cv_as_eh_frame = buggy; then
2653 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2654 [Define if your assembler mis-optimizes .eh_frame data.])
2657 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2658 [elf,2,12,0], [--fatal-warnings],
2659 [.section .rodata.str, "aMS", @progbits, 1])
2660 if test $gcc_cv_as_shf_merge = no; then
2661 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2662 [elf,2,12,0], [--fatal-warnings],
2663 [.section .rodata.str, "aMS", %progbits, 1])
2665 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2666 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2667 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2669 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2670 gcc_cv_as_comdat_group,
2671 [elf,2,16,0], [--fatal-warnings],
2672 [.section .text,"axG",@progbits,.foo,comdat])
2673 if test $gcc_cv_as_comdat_group = yes; then
2674 gcc_cv_as_comdat_group_percent=no
2675 gcc_cv_as_comdat_group_group=no
2677 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2678 gcc_cv_as_comdat_group_percent,
2679 [elf,2,16,0], [--fatal-warnings],
2680 [.section .text,"axG",%progbits,.foo,comdat])
2681 if test $gcc_cv_as_comdat_group_percent = yes; then
2682 gcc_cv_as_comdat_group_group=no
2685 # Sun as uses a completely different syntax.
2690 .group foo,".text%foo",#comdat
2691 .section ".text%foo", #alloc,#execinstr,#progbits
2696 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2698 .group foo,.text%foo,#comdat
2699 .section .text%foo, "ax", @progbits
2705 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2706 gcc_cv_as_comdat_group_group,
2712 if test x"$ld_is_gold" = xyes; then
2714 elif test $in_tree_ld = yes ; then
2716 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2717 && test $in_tree_ld_is_elf = yes; then
2720 elif echo "$ld_ver" | grep GNU > /dev/null; then
2722 if test 0"$ld_date" -lt 20050308; then
2723 if test -n "$ld_date"; then
2724 # If there was date string, but was earlier than 2005-03-08, fail
2726 elif test "$ld_vers_major" -lt 2; then
2728 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2735 *-*-solaris2.1[1-9]*)
2737 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2738 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2741 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2742 # least ld version 1.2267.
2743 if test "$ld_vers_major" -gt 1; then
2745 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2747 elif test "$ld_vers_minor" -ge 2267; then
2752 # Assume linkers other than GNU ld don't support COMDAT group.
2758 # Allow overriding the automatic COMDAT group tests above.
2759 AC_ARG_ENABLE(comdat,
2760 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2761 [comdat_group="$enable_comdat"])
2762 if test $comdat_group = no; then
2763 gcc_cv_as_comdat_group=no
2764 gcc_cv_as_comdat_group_percent=no
2765 gcc_cv_as_comdat_group_group=no
2767 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2768 [`if test $gcc_cv_as_comdat_group = yes \
2769 || test $gcc_cv_as_comdat_group_percent = yes \
2770 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2771 [Define 0/1 if your assembler and linker support COMDAT groups.])
2773 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2774 gcc_cv_as_discriminator,
2778 .loc 1 1 0 discriminator 1],,
2779 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2780 [Define if your assembler supports the .loc discriminator sub-directive.])])
2782 # Thread-local storage - the check is heavily parameterized.
2791 .section ".tdata","awT",@progbits
2794 ldq $27,__tls_get_addr($29) !literal!1
2795 lda $16,foo($29) !tlsgd!1
2796 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2797 ldq $27,__tls_get_addr($29) !literal!2
2798 lda $16,foo($29) !tlsldm!2
2799 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2800 ldq $1,foo($29) !gotdtprel
2801 ldah $2,foo($29) !dtprelhi
2802 lda $3,foo($2) !dtprello
2803 lda $4,foo($29) !dtprel
2804 ldq $1,foo($29) !gottprel
2805 ldah $2,foo($29) !tprelhi
2806 lda $3,foo($2) !tprello
2807 lda $4,foo($29) !tprel'
2810 tls_as_opt=--fatal-warnings
2812 cris-*-*|crisv32-*-*)
2814 .section ".tdata","awT",@progbits
2821 tls_as_opt=--fatal-warnings
2825 .section ".tdata","awT",@progbits
2837 .section ".tdata","awT",@progbits
2841 addil LT%foo-$tls_gdidx$,gp
2842 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2845 addil LT%foo-$tls_ldidx$,gp
2847 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2848 addil LR%foo-$tls_dtpoff$,%ret0
2849 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2851 addil LT%foo-$tls_ieoff$,gp
2852 ldw RT%foo-$tls_ieoff$(%r1),%t2
2855 addil LR%foo-$tls_leoff$,%t1
2856 ldo RR%foo-$tls_leoff$(%r1),%t2'
2859 tls_as_opt=--fatal-warnings
2863 .section ".tdata","awT",%progbits
2874 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2876 i[34567]86-*-solaris2.*)
2878 tga_func=___tls_get_addr
2880 x86_64-*-solaris2.1[0-9]*)
2882 tga_func=__tls_get_addr
2888 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2890 .section .tdata,"awt",@progbits'
2894 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2895 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2899 .section ".tdata","awT",@progbits'
2902 tls_as_opt="--fatal-warnings"
2904 conftest_s="$conftest_s
2908 leal foo@tlsgd(,%ebx,1), %eax
2909 leal foo@tlsldm(%ebx), %eax
2910 leal foo@dtpoff(%eax), %edx
2911 movl foo@gottpoff(%ebx), %eax
2912 subl foo@gottpoff(%ebx), %eax
2913 addl foo@gotntpoff(%ebx), %eax
2914 movl foo@indntpoff, %eax
2915 movl \$foo@tpoff, %eax
2916 subl \$foo@tpoff, %eax
2917 leal foo@ntpoff(%ecx), %eax"
2921 .section ".tdata","awT",@progbits
2925 leaq foo@TLSGD(%rip), %rdi
2926 leaq foo@TLSLD(%rip), %rdi
2927 leaq foo@DTPOFF(%rax), %rdx
2928 movq foo@GOTTPOFF(%rip), %rax
2929 movq $foo@TPOFF, %rax'
2932 tls_as_opt=--fatal-warnings
2936 .section ".tdata","awT",@progbits
2939 addl r16 = @ltoff(@dtpmod(foo#)), gp
2940 addl r17 = @ltoff(@dtprel(foo#)), gp
2941 addl r18 = @ltoff(@tprel(foo#)), gp
2942 addl r19 = @dtprel(foo#), gp
2943 adds r21 = @dtprel(foo#), r13
2944 movl r23 = @dtprel(foo#)
2945 addl r20 = @tprel(foo#), gp
2946 adds r22 = @tprel(foo#), r13
2947 movl r24 = @tprel(foo#)'
2950 tls_as_opt=--fatal-warnings
2954 .section .tdata,"awT",@progbits
2958 addiu $4, $28, %tlsgd(x)
2959 addiu $4, $28, %tlsldm(x)
2960 lui $4, %dtprel_hi(x)
2961 addiu $4, $4, %dtprel_lo(x)
2962 lw $4, %gottprel(x)($28)
2963 lui $4, %tprel_hi(x)
2964 addiu $4, $4, %tprel_lo(x)'
2967 tls_as_opt='-32 --fatal-warnings'
2971 .section .tdata,"awT",@progbits
2976 move.l x@TLSGD(%a5),%a0
2977 move.l x@TLSLDM(%a5),%a0
2978 move.l x@TLSLDO(%a5),%a0
2979 move.l x@TLSIE(%a5),%a0
2980 move.l x@TLSLE(%a5),%a0'
2983 tls_as_opt='--fatal-warnings'
2987 .section ".tdata","awT",@progbits
2995 addi 3,31,ld0@got@tlsgd
2997 addi 3,31,x1@got@tlsld
3000 addis 9,3,x2@dtprel@ha
3001 addi 9,9,x2@dtprel@l
3002 lwz 9,x3@got@tprel(31)
3005 addis 9,2,x2@tprel@ha
3006 addi 9,9,x2@tprel@l'
3009 tls_as_opt="-a32 --fatal-warnings"
3013 .section ".tdata","awT",@progbits
3021 addi 3,2,ld0@got@tlsgd
3027 addi 3,2,x1@got@tlsld
3033 addis 9,3,x2@dtprel@ha
3034 addi 9,9,x2@dtprel@l
3037 ld 9,x3@got@dtprel(2)
3043 tls_as_opt="-a64 --fatal-warnings"
3047 .section ".tdata","awT",@progbits
3056 l %r1,foo@GOTNTPOFF(%r12)
3057 l %r1,0(%r1):tls_load:foo
3058 bas %r14,0(%r1,%r13):tls_gdcall:foo
3059 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3062 tls_as_opt="-m31 --fatal-warnings"
3066 .section ".tdata","awT",@progbits
3074 lg %r1,foo@GOTNTPOFF(%r12)
3075 larl %r1,foo@INDNTPOFF
3076 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3077 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3080 tls_as_opt="-m64 -Aesame --fatal-warnings"
3082 sh-*-* | sh[34]-*-*)
3084 .section ".tdata","awT",@progbits
3094 tls_as_opt=--fatal-warnings
3098 sparc*-sun-solaris2.*)
3100 tga_func=__tls_get_addr
3106 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3108 .section ".tdata",#alloc,#write,#tls'
3113 .section ".tdata","awT",@progbits'
3116 tls_as_opt="-32 --fatal-warnings"
3118 conftest_s="$conftest_s
3121 sethi %tgd_hi22(foo), %o0
3122 add %o0, %tgd_lo10(foo), %o1
3123 add %l7, %o1, %o0, %tgd_add(foo)
3124 call __tls_get_addr, %tgd_call(foo)
3125 sethi %tldm_hi22(foo), %l1
3126 add %l1, %tldm_lo10(foo), %l2
3127 add %l7, %l2, %o0, %tldm_add(foo)
3128 call __tls_get_addr, %tldm_call(foo)
3129 sethi %tldo_hix22(foo), %l3
3130 xor %l3, %tldo_lox10(foo), %l4
3131 add %o0, %l4, %l5, %tldo_add(foo)
3132 sethi %tie_hi22(foo), %o3
3133 add %o3, %tie_lo10(foo), %o3
3134 ld [%l7 + %o3], %o2, %tie_ld(foo)
3135 add %g7, %o2, %o4, %tie_add(foo)
3136 sethi %tle_hix22(foo), %l1
3137 xor %l1, %tle_lox10(foo), %o5
3138 ld [%g7 + %o5], %o1"
3142 .section ".tdata","awT",@progbits
3145 addli r0, zero, tls_gd(foo)
3146 auli r0, zero, tls_gd_ha16(foo)
3147 addli r0, r0, tls_gd_lo16(foo)
3149 addli r0, zero, tls_ie(foo)
3150 auli r0, r0, tls_ie_ha16(foo)
3151 addli r0, r0, tls_ie_lo16(foo)'
3154 tls_as_opt="--fatal-warnings"
3158 .section ".tdata","awT",@progbits
3161 shl16insli r0, zero, hw0_last_tls_gd(foo)
3162 shl16insli r0, zero, hw1_last_tls_gd(foo)
3163 shl16insli r0, r0, hw0_tls_gd(foo)
3165 shl16insli r0, zero, hw1_last_tls_ie(foo)
3166 shl16insli r0, r0, hw0_tls_ie(foo)'
3169 tls_as_opt="--fatal-warnings"
3173 .section ".tdata","awT",@progbits
3176 movi a8, foo@TLSFUNC
3177 movi a10, foo@TLSARG
3178 callx8.tls a8, foo@TLSCALL'
3185 if test "x$enable_tls" = xno ; then
3186 : # TLS explicitly disabled.
3187 elif test "x$enable_tls" = xyes ; then
3188 set_have_as_tls=yes # TLS explicitly enabled.
3189 elif test -z "$tls_first_major"; then
3190 : # If we don't have a check, assume no support.
3192 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3193 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3194 [set_have_as_tls=yes])
3198 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3199 # with TLS support are in use, native TLS cannot work.
3203 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3204 # gld with TLS support are in use, native TLS cannot work.
3207 # TLS was introduced in the Solaris 9 FCS release and backported to
3208 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3209 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3210 # ld and GCC don't support any longer.
3212 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3214 # Check ld and ld.so.1 TLS support.
3215 if echo "$ld_ver" | grep GNU > /dev/null; then
3216 # Assume all interesting versions of GNU ld have TLS support.
3217 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3221 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3223 min_tls_ld_vers_minor=280
3225 # Solaris 8/SPARC ld has TLS support since version 1.272.
3226 sparc*-*-solaris2.8)
3227 min_tls_ld_vers_minor=272
3229 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3231 min_tls_ld_vers_minor=374
3233 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3234 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3235 min_tls_ld_vers_minor=343
3238 if test "$ld_vers_major" -gt 1 || \
3239 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3245 AC_MSG_RESULT($ld_tls_support)
3248 save_LDFLAGS="$LDFLAGS"
3252 AC_MSG_CHECKING(alternate thread library)
3254 # TLS support was backported to Solaris 8 patches, but only lives in
3255 # the alternate thread library which became the default in Solaris 9.
3256 # We want to always use that, irrespective of TLS support.
3258 # Take multilib subdir into account. There's no spec to handle
3259 # this. The 64 symlink exists since Solaris 8.
3260 lwp_dir=/usr/lib/lwp
3261 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3262 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3269 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3270 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3271 [Define to the linker flags to use for -pthread.])
3272 AC_MSG_RESULT($lwp_dir)
3274 AC_MSG_CHECKING(library containing $tga_func)
3275 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3276 # (32-bit x86) only lived in libthread, so check for that. Keep
3277 # set_have_as_tls if found, disable if not.
3278 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3279 # Clear LIBS if we cannot support TLS.
3280 if test $set_have_as_tls = no; then
3283 # Even without TLS support on Solaris 8, explicitly link with libthread
3284 # to guarantee that the alternate thread library is used.
3290 # Always define LIB_TLS_SPEC, even without TLS support.
3291 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3292 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3293 AC_MSG_RESULT($LIBS)
3296 LDFLAGS="$save_LDFLAGS"
3299 if test $set_have_as_tls = yes ; then
3300 AC_DEFINE(HAVE_AS_TLS, 1,
3301 [Define if your assembler and linker support thread-local storage.])
3304 # Target-specific assembler checks.
3306 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3307 gcc_cv_ld_static_dynamic=no
3308 gcc_cv_ld_static_option='-Bstatic'
3309 gcc_cv_ld_dynamic_option='-Bdynamic'
3310 if test $in_tree_ld = yes ; then
3311 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3312 gcc_cv_ld_static_dynamic=yes
3314 elif test x$gcc_cv_ld != x; then
3315 # Check if linker supports -Bstatic/-Bdynamic option
3316 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3317 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3318 gcc_cv_ld_static_dynamic=yes
3321 # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic.
3323 gcc_cv_ld_static_dynamic=yes
3324 gcc_cv_ld_static_option="-noso"
3325 gcc_cv_ld_dynamic_option="-so_archive"
3327 # HP-UX ld uses -a flags to select between shared and archive.
3329 if test x"$gnu_ld" = xno; then
3330 gcc_cv_ld_static_dynamic=yes
3331 gcc_cv_ld_static_option="-aarchive_shared"
3332 gcc_cv_ld_dynamic_option="-adefault"
3335 # IRIX 6 ld supports -Bstatic/-Bdynamic.
3337 gcc_cv_ld_static_dynamic=yes
3339 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3341 gcc_cv_ld_static_dynamic=yes
3346 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3347 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3348 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3349 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3350 [Define to the linker option to disable use of shared objects.])
3351 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3352 [Define to the linker option to enable use of shared objects.])
3354 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3356 if test x"$demangler_in_ld" = xyes; then
3357 AC_MSG_CHECKING(linker --demangle support)
3358 gcc_cv_ld_demangle=no
3359 if test $in_tree_ld = yes; then
3360 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3361 gcc_cv_ld_demangle=yes
3363 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3364 # Check if the GNU linker supports --demangle option
3365 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3366 gcc_cv_ld_demangle=yes
3369 if test x"$gcc_cv_ld_demangle" = xyes; then
3370 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3371 [Define if your linker supports --demangle option.])
3373 AC_MSG_RESULT($gcc_cv_ld_demangle)
3376 AC_MSG_CHECKING(linker plugin support)
3378 if test -f liblto_plugin.la; then
3379 save_ld_ver="$ld_ver"
3380 save_ld_vers_major="$ld_vers_major"
3381 save_ld_vers_minor="$ld_vers_minor"
3382 save_ld_is_gold="$ld_is_gold"
3386 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3388 # FIXME: ld_is_gold?
3389 ld_vers_major="$gcc_cv_gld_major_version"
3390 ld_vers_minor="$gcc_cv_gld_minor_version"
3392 # Determine plugin linker version.
3393 # FIXME: Partial duplicate from above, generalize.
3395 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3396 if echo "$ld_ver" | grep GNU > /dev/null; then
3397 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3399 ld_vers=`echo $ld_ver | sed -n \
3400 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3402 ld_vers=`echo $ld_ver | sed -n \
3403 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3405 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3406 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3411 # Determine plugin support.
3412 if echo "$ld_ver" | grep GNU > /dev/null; then
3413 # Require GNU ld or gold 2.21+ for plugin support by default.
3414 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3416 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3417 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3422 ld_ver="$save_ld_ver"
3423 ld_vers_major="$save_ld_vers_major"
3424 ld_vers_minor="$save_ld_vers_minor"
3425 ld_is_gold="$save_ld_is_gold"
3427 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3428 [Define to the level of your linker's plugin support.])
3429 AC_MSG_RESULT($gcc_cv_lto_plugin)
3432 # All TARGET_ABI_OSF targets.
3433 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3434 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3435 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3438 extbl $3, $2, $3 !lituse_bytoff!1
3439 ldq $2, a($29) !literal!1
3440 ldq $4, b($29) !literal!2
3441 ldq_u $3, 0($2) !lituse_base!1
3442 ldq $27, f($29) !literal!5
3443 jsr $26, ($27), f !lituse_jsr!5
3444 ldah $29, 0($26) !gpdisp!3
3445 lda $0, c($29) !gprel
3446 ldah $1, d($29) !gprelhigh
3447 lda $1, d($1) !gprellow
3448 lda $29, 0($29) !gpdisp!3],,
3449 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3450 [Define if your assembler supports explicit relocations.])])
3451 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3452 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3455 ldq $27, a($29) !literal!1
3456 jsr $26, ($27), a !lituse_jsrdirect!1],,
3457 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3458 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3462 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3463 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3464 [-no-mul-bug-abort], [.text],,
3465 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3466 [Define if your assembler supports the -no-mul-bug-abort option.])])
3470 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3471 [.register %g2, #scratch],,
3472 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3473 [Define if your assembler supports .register.])])
3475 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3477 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3478 [Define if your assembler supports -relax option.])])
3480 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3481 gcc_cv_as_sparc_gotdata_op,,
3488 sethi %gdop_hix22(foo), %g1
3489 xor %g1, %gdop_lox10(foo), %g1
3490 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3491 [if test x$gcc_cv_ld != x \
3492 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3493 if test x$gcc_cv_objdump != x; then
3494 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3495 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3496 gcc_cv_as_sparc_gotdata_op=no
3498 gcc_cv_as_sparc_gotdata_op=yes
3503 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3504 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3506 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3507 gcc_cv_as_sparc_ua_pcrel,,
3515 .uaword %r_disp32(foo)],
3516 [if test x$gcc_cv_ld != x \
3517 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3518 gcc_cv_as_sparc_ua_pcrel=yes
3521 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3522 [Define if your assembler and linker support unaligned PC relative relocs.])
3524 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3525 gcc_cv_as_sparc_ua_pcrel_hidden,,
3530 .uaword %r_disp32(foo)
3531 .byte 0x32, 0x33, 0x34
3536 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3537 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3538 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3539 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3540 if $gcc_cv_objdump -R conftest 2> /dev/null \
3541 | grep 'DISP32' > /dev/null 2>&1; then
3544 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3548 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3549 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3550 ]) # unaligned pcrel relocs
3552 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3553 gcc_cv_as_sparc_offsetable_lo10,,
3556 or %g1, %lo(ab) + 12, %g1
3557 or %g1, %lo(ab + 12), %g1],
3558 [if test x$gcc_cv_objdump != x \
3559 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3560 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3561 gcc_cv_as_sparc_offsetable_lo10=yes
3563 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3564 [Define if your assembler supports offsetable %lo().])])
3566 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3567 gcc_cv_as_sparc_fmaf,,
3570 .register %g2, #scratch
3571 .register %g3, #scratch
3573 fmaddd %f0, %f2, %f4, %f6
3574 addxccc %g1, %g2, %g3
3575 fsrl32 %f2, %f4, %f8
3576 fnaddd %f10, %f12, %f14],,
3577 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3578 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3582 i[34567]86-*-* | x86_64-*-*)
3586 # Full C++ conformance when using a shared libstdc++-v3 requires some
3587 # support from the Cygwin DLL, which in more recent versions exports
3588 # wrappers to aid in interposing and redirecting operators new, delete,
3589 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3590 # are configuring for a version of Cygwin that exports the wrappers.
3591 if test x$host = x$target; then
3592 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3594 # Can't check presence of libc functions during cross-compile, so
3595 # we just have to assume we're building for an up-to-date target.
3596 gcc_ac_cygwin_dll_wrappers=yes
3598 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3599 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3600 [Define if you want to generate code by default that assumes that the
3601 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3604 cygwin* | pe | mingw32* | interix*)
3605 # Recent binutils allows the three-operand form of ".comm" on PE. This
3606 # definition is used unconditionally to initialise the default state of
3607 # the target option variable that governs usage of the feature.
3608 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3609 [2,19,52],,[.comm foo,1,32])
3610 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3611 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3612 [Define if your assembler supports specifying the alignment
3613 of objects allocated using the GAS .comm command.])
3614 # Used for DWARF 2 in PE
3615 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3616 gcc_cv_as_ix86_pe_secrel32,
3622 [if test x$gcc_cv_ld != x \
3623 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3624 gcc_cv_as_ix86_pe_secrel32=yes
3627 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3628 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3629 # Test if the assembler supports the extended form of the .section
3630 # directive that specifies section alignment. LTO support uses this,
3631 # but normally only after installation, so we warn but don't fail the
3632 # configure if LTO is enabled but the assembler does not support it.
3633 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3634 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3635 if test x$gcc_cv_as_section_has_align != xyes; then
3636 case ",$enable_languages," in
3638 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3642 # Test if the assembler supports the section flag 'e' for specifying
3643 # an excluded section.
3644 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3648 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3649 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3650 [Define if your assembler supports specifying the section flag e.])
3654 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3655 gcc_cv_as_ix86_filds,,,
3656 [filds mem; fists mem],,
3657 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3658 [Define if your assembler uses filds and fists mnemonics.])])
3660 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3661 gcc_cv_as_ix86_fildq,,,
3662 [fildq mem; fistpq mem],,
3663 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3664 [Define if your assembler uses fildq and fistq mnemonics.])])
3666 gcc_GAS_CHECK_FEATURE([cmov syntax],
3667 gcc_cv_as_ix86_cmov_sun_syntax,,,
3668 [cmovl.l %edx, %eax],,
3669 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3670 [Define if your assembler supports the Sun syntax for cmov.])])
3672 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3673 gcc_cv_as_ix86_ffreep,,,
3675 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3676 [Define if your assembler supports the ffreep mnemonic.])])
3678 gcc_GAS_CHECK_FEATURE([.quad directive],
3679 gcc_cv_as_ix86_quad,,,
3681 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3682 [Define if your assembler supports the .quad directive.])])
3684 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3685 gcc_cv_as_ix86_sahf,,,
3688 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3689 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3691 gcc_GAS_CHECK_FEATURE([swap suffix],
3692 gcc_cv_as_ix86_swap,,,
3693 [movl.s %esp, %ebp],,
3694 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3695 [Define if your assembler supports the swap suffix.])])
3697 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3698 gcc_cv_as_ix86_diff_sect_delta,,,
3706 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3707 [Define if your assembler supports the subtraction of symbols in different sections.])])
3709 # These two are used unconditionally by i386.[ch]; it is to be defined
3710 # to 1 if the feature is present, 0 otherwise.
3711 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3712 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3718 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3719 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3720 [Define true if the assembler supports '.long foo@GOTOFF'.])
3722 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3723 gcc_cv_as_ix86_rep_lock_prefix,,,
3725 lock addl %edi, (%eax,%esi)
3726 lock orl $0, (%esp)],,
3727 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3728 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3730 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3731 gcc_cv_as_ix86_tlsgdplt,,,
3732 [call tls_gd@tlsgdplt],
3733 [if test x$gcc_cv_ld != x \
3734 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3735 gcc_cv_as_ix86_tlsgdplt=yes
3738 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3739 [Define if your assembler and linker support @tlsgdplt.])])
3741 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3742 gcc_cv_as_ix86_tlsldmplt,,,
3744 call tls_ld@tlsldmplt],
3745 [if test x$gcc_cv_ld != x \
3746 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3747 gcc_cv_as_ix86_tlsldmplt=yes
3750 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3751 [Define if your assembler and linker support @tlsldmplt.])])
3756 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3757 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3759 addl r15 = @ltoffx(x#), gp
3761 ld8.mov r16 = [[r15]], x#],,
3762 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3763 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3769 *-*-aix*) conftest_s=' .machine "pwr5"
3773 gcc_GAS_CHECK_FEATURE([.machine directive support],
3774 gcc_cv_as_machine_directive,,,
3775 [ .machine ppc7400])
3776 if test x$gcc_cv_as_machine_directive != xyes; then
3777 echo "*** This target requires an assembler supporting \".machine\"" >&2
3778 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3779 test x$build = x$target && exit 1
3783 *) conftest_s=' .machine power4
3788 gcc_GAS_CHECK_FEATURE([mfcr field support],
3789 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3791 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3792 [Define if your assembler supports mfcr field.])])
3795 *-*-aix*) conftest_s=' .machine "pwr5"
3798 *) conftest_s=' .machine power5
3803 gcc_GAS_CHECK_FEATURE([popcntb support],
3804 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3806 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3807 [Define if your assembler supports popcntb field.])])
3810 *-*-aix*) conftest_s=' .machine "pwr5x"
3813 *) conftest_s=' .machine power5
3818 gcc_GAS_CHECK_FEATURE([fp round support],
3819 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3821 [AC_DEFINE(HAVE_AS_FPRND, 1,
3822 [Define if your assembler supports fprnd.])])
3825 *-*-aix*) conftest_s=' .machine "pwr6"
3828 *) conftest_s=' .machine power6
3833 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3834 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3836 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3837 [Define if your assembler supports mffgpr and mftgpr.])])
3840 *-*-aix*) conftest_s=' .csect .text[[PR]]
3842 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3846 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3847 *) conftest_s=' .text
3849 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3852 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3853 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3855 [AC_DEFINE(HAVE_AS_REL16, 1,
3856 [Define if your assembler supports R_PPC_REL16 relocs.])])
3859 *-*-aix*) conftest_s=' .machine "pwr6"
3862 *) conftest_s=' .machine power6
3867 gcc_GAS_CHECK_FEATURE([compare bytes support],
3868 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3870 [AC_DEFINE(HAVE_AS_CMPB, 1,
3871 [Define if your assembler supports cmpb.])])
3874 *-*-aix*) conftest_s=' .machine "pwr6"
3877 *) conftest_s=' .machine power6
3882 gcc_GAS_CHECK_FEATURE([decimal float support],
3883 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3885 [AC_DEFINE(HAVE_AS_DFP, 1,
3886 [Define if your assembler supports DFP instructions.])])
3889 *-*-aix*) conftest_s=' .machine "pwr7"
3892 *) conftest_s=' .machine power7
3897 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3898 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3900 [AC_DEFINE(HAVE_AS_VSX, 1,
3901 [Define if your assembler supports VSX instructions.])])
3904 *-*-aix*) conftest_s=' .machine "pwr7"
3907 *) conftest_s=' .machine power7
3912 gcc_GAS_CHECK_FEATURE([popcntd support],
3913 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3915 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3916 [Define if your assembler supports POPCNTD instructions.])])
3919 *-*-aix*) conftest_s=' .csect .text[[PR]]
3921 *) conftest_s=' .text
3925 gcc_GAS_CHECK_FEATURE([lwsync support],
3926 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3928 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3929 [Define if your assembler supports LWSYNC instructions.])])
3932 *-*-aix*) conftest_s=' .machine "476"
3935 *) conftest_s=' .machine "476"
3940 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3941 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3943 [AC_DEFINE(HAVE_AS_DCI, 1,
3944 [Define if your assembler supports the DCI/ICI instructions.])])
3946 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3947 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3948 [.gnu_attribute 4,1],,
3949 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3950 [Define if your assembler supports .gnu_attribute.])])
3952 gcc_GAS_CHECK_FEATURE([tls marker support],
3953 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3954 [ bl __tls_get_addr(x@tlsgd)],,
3955 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3956 [Define if your assembler supports arg info for __tls_get_addr.])])
3960 gcc_GAS_CHECK_FEATURE([.ref support],
3961 gcc_cv_as_aix_ref, [2.21.0],,
3962 [ .csect stuff[[rw]]
3968 [AC_DEFINE(HAVE_AS_REF, 1,
3969 [Define if your assembler supports .ref])])
3975 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3976 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3977 [ lw $4,%gp_rel(foo)($4)],,
3978 [if test x$target_cpu_default = x
3979 then target_cpu_default=MASK_EXPLICIT_RELOCS
3980 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3982 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3983 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3984 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3985 [Define if the assembler understands -mno-shared.])])
3987 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3988 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3989 [.gnu_attribute 4,1],,
3990 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3991 [Define if your assembler supports .gnu_attribute.])])
3993 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3994 gcc_cv_as_mips_dtprelword, [2,18,0],,
3995 [.section .tdata,"awT",@progbits
3999 .dtprelword x+0x8000],,
4000 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4001 [Define if your assembler supports .dtprelword.])])
4003 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4004 gcc_cv_as_mips_dspr1_mult,,,
4014 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4015 [Define if your assembler supports DSPR1 mult.])])
4017 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4018 gcc_cv_as_ld_jalr_reloc=no
4019 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4020 if test $in_tree_ld = yes ; then
4021 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4022 && test $in_tree_ld_is_elf = yes; then
4023 gcc_cv_as_ld_jalr_reloc=yes
4025 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4026 echo ' .ent x' > conftest.s
4027 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
4028 echo ' ld $25,%call16(y)($28)' >> conftest.s
4029 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4030 echo '1: jalr $25' >> conftest.s
4031 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4032 echo '1: jalr $25' >> conftest.s
4033 echo ' .end x' >> conftest.s
4034 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4035 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4036 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4037 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4038 gcc_cv_as_ld_jalr_reloc=yes
4044 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4045 if test x$target_cpu_default = x; then
4046 target_cpu_default=MASK_RELAX_PIC_CALLS
4048 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4051 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4053 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4054 [gcc_cv_ld_mips_personality_relaxation],
4055 [gcc_cv_ld_mips_personality_relaxation=no
4056 if test $in_tree_ld = yes ; then
4057 if test "$gcc_cv_gld_major_version" -eq 2 \
4058 -a "$gcc_cv_gld_minor_version" -ge 21 \
4059 -o "$gcc_cv_gld_major_version" -gt 2; then
4060 gcc_cv_ld_mips_personality_relaxation=yes
4062 elif test x$gcc_cv_as != x \
4063 -a x$gcc_cv_ld != x \
4064 -a x$gcc_cv_readelf != x ; then
4065 cat > conftest.s <<EOF
4067 .cfi_personality 0x80,indirect_ptr
4074 .section .data,"aw",@progbits
4078 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4079 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4080 if $gcc_cv_readelf -d conftest 2>&1 \
4081 | grep TEXTREL > /dev/null 2>&1; then
4083 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4084 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4087 gcc_cv_ld_mips_personality_relaxation=yes
4091 rm -f conftest.s conftest.o conftest])
4092 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4093 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4094 [Define if your linker can relax absolute .eh_frame personality
4095 pointers into PC-relative form.])
4100 # Mips and HP-UX need the GNU assembler.
4101 # Linux on IA64 might be able to use the Intel assembler.
4104 mips*-*-* | *-*-hpux* )
4105 if test x$gas_flag = xyes \
4106 || test x"$host" != x"$build" \
4107 || test ! -x "$gcc_cv_as" \
4108 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4111 echo "*** This configuration requires the GNU assembler" >&2
4117 # ??? Not all targets support dwarf2 debug_line, even within a version
4118 # of gas. Moreover, we need to emit a valid instruction to trigger any
4119 # info to the output file. So, as supported targets are added to gas 2.11,
4120 # add some instruction here to (also) show we expect this might work.
4121 # ??? Once 2.11 is released, probably need to add first known working
4122 # version to the per-target configury.
4124 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4125 | pa | rs6000 | score | sparc | spu | tilegx | tilepro | xstormy16 | xtensa)
4135 if test x"$insn" != x; then
4137 .file 1 \"conftest.s\"
4140 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4141 gcc_cv_as_dwarf2_debug_line,
4142 [elf,2,11,0],, [$conftest_s],
4143 [if test x$gcc_cv_objdump != x \
4144 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4145 | grep debug_line > /dev/null 2>&1; then
4146 gcc_cv_as_dwarf2_debug_line=yes
4149 # The .debug_line file table must be in the exact order that
4150 # we specified the files, since these indices are also used
4151 # by DW_AT_decl_file. Approximate this test by testing if
4152 # the assembler bitches if the same index is assigned twice.
4153 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4154 gcc_cv_as_dwarf2_file_buggy,,,
4158 if test $gcc_cv_as_dwarf2_debug_line = yes \
4159 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4160 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4161 [Define if your assembler supports dwarf2 .file/.loc directives,
4162 and preserves file table indices exactly as given.])
4165 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4166 gcc_cv_as_gdwarf2_flag,
4167 [elf,2,11,0], [--gdwarf2], [$insn],,
4168 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4169 [Define if your assembler supports the --gdwarf2 option.])])
4171 gcc_GAS_CHECK_FEATURE([--gstabs option],
4172 gcc_cv_as_gstabs_flag,
4173 [elf,2,11,0], [--gstabs], [$insn],
4174 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4175 # and warns about it, but still exits successfully. So check for
4177 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4179 else gcc_cv_as_gstabs_flag=yes
4181 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4182 [Define if your assembler supports the --gstabs option.])])
4184 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4185 gcc_cv_as_debug_prefix_map_flag,
4186 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4187 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4188 [Define if your assembler supports the --debug-prefix-map option.])])
4191 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4194 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4195 [Define if your assembler supports .lcomm with an alignment field.])])
4197 AC_ARG_ENABLE(gnu-unique-object,
4198 [AS_HELP_STRING([--enable-gnu-unique-object],
4199 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4200 [case $enable_gnu_unique_object in
4202 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4203 Valid choices are 'yes' and 'no'.]) ;;
4205 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4207 [.type foo, '$target_type_format_char'gnu_unique_object],,
4208 # We need to unquote above to to use the definition from config.gcc.
4209 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4210 [[if test x$host = x$build -a x$host = x$target &&
4211 ldd --version 2>/dev/null &&
4212 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4213 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4214 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4215 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4216 if test "$glibcnum" -ge 2011 ; then
4217 enable_gnu_unique_object=yes
4220 if test x$enable_gnu_unique_object = xyes; then
4221 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4222 [Define if your assembler supports @gnu_unique_object.])
4225 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4226 [gcc_cv_as_line_zero],
4227 [gcc_cv_as_line_zero=no
4228 if test $in_tree_gas = yes; then
4229 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4230 elif test "x$gcc_cv_as" != x; then
4231 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4232 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4233 test "x`cat conftest.out`" = x
4235 gcc_cv_as_line_zero=yes
4237 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4238 cat conftest.s >&AS_MESSAGE_LOG_FD
4239 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4240 cat conftest.out >&AS_MESSAGE_LOG_FD
4242 rm -f conftest.o conftest.s conftest.out
4244 if test "x$gcc_cv_as_line_zero" = xyes; then
4245 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4246 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4249 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4250 gcc_cv_ld_eh_frame_hdr=no
4251 if test $in_tree_ld = yes ; then
4252 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4253 && test $in_tree_ld_is_elf = yes; then
4254 gcc_cv_ld_eh_frame_hdr=yes
4256 elif test x$gcc_cv_ld != x; then
4257 if echo "$ld_ver" | grep GNU > /dev/null; then
4258 # Check if linker supports --eh-frame-hdr option
4259 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4260 gcc_cv_ld_eh_frame_hdr=yes
4265 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4266 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4267 gcc_cv_ld_eh_frame_hdr=yes
4273 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4274 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4275 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4276 [Define if your linker supports .eh_frame_hdr.])
4278 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4280 AC_MSG_CHECKING(linker position independent executable support)
4282 if test $in_tree_ld = yes ; then
4283 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4284 && test $in_tree_ld_is_elf = yes; then
4287 elif test x$gcc_cv_ld != x; then
4288 # Check if linker supports -pie option
4289 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4293 if test x"$gcc_cv_ld_pie" = xyes; then
4294 AC_DEFINE(HAVE_LD_PIE, 1,
4295 [Define if your linker supports -pie option.])
4297 AC_MSG_RESULT($gcc_cv_ld_pie)
4299 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4300 gcc_cv_ld_eh_gc_sections=no
4301 if test $in_tree_ld = yes ; then
4302 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4303 && test $in_tree_ld_is_elf = yes; then
4304 gcc_cv_ld_eh_gc_sections=yes
4306 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4307 cat > conftest.s <<EOF
4310 .type _start, @function
4313 .size _start, .-_start
4314 .section .text.foo,"ax",@progbits
4315 .type foo, @function
4319 .section .gcc_except_table.foo,"a",@progbits
4322 .section .eh_frame,"a",@progbits
4325 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4326 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4327 | grep "gc-sections option ignored" > /dev/null; then
4328 gcc_cv_ld_eh_gc_sections=no
4329 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4330 | grep gcc_except_table > /dev/null; then
4331 gcc_cv_ld_eh_gc_sections=yes
4332 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4333 if test x$gcc_cv_as_comdat_group != xyes; then
4334 gcc_cv_ld_eh_gc_sections=no
4335 cat > conftest.s <<EOF
4338 .type _start, @function
4341 .size _start, .-_start
4342 .section .gnu.linkonce.t.foo,"ax",@progbits
4343 .type foo, @function
4347 .section .gcc_except_table.foo,"a",@progbits
4350 .section .eh_frame,"a",@progbits
4353 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4354 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4355 | grep "gc-sections option ignored" > /dev/null; then
4356 gcc_cv_ld_eh_gc_sections=no
4357 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4358 | grep gcc_except_table > /dev/null; then
4359 gcc_cv_ld_eh_gc_sections=yes
4365 rm -f conftest.s conftest.o conftest
4369 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4370 gcc_cv_ld_eh_gc_sections=no
4373 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4374 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4375 [Define if your linker supports garbage collection of
4376 sections in presence of EH frames.])
4378 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4380 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4381 gcc_cv_ld_eh_gc_sections_bug=no
4382 if test $in_tree_ld = yes ; then
4383 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4384 && test $in_tree_ld_is_elf = yes; then
4385 gcc_cv_ld_eh_gc_sections_bug=yes
4387 elif test x$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
4388 gcc_cv_ld_eh_gc_sections_bug=yes
4389 cat > conftest.s <<EOF
4392 .type _start, @function
4395 .size _start, .-_start
4396 .section .text.startup.foo,"ax",@progbits
4397 .type foo, @function
4401 .section .gcc_except_table.foo,"a",@progbits
4404 .section .eh_frame,"a",@progbits
4407 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4408 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4409 | grep "gc-sections option ignored" > /dev/null; then
4411 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4412 | grep gcc_except_table > /dev/null; then
4413 gcc_cv_ld_eh_gc_sections_bug=no
4416 rm -f conftest.s conftest.o conftest
4418 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4419 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4420 [Define if your linker has buggy garbage collection of
4421 sections support when .text.startup.foo like sections are used.])
4423 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4429 AC_CACHE_CHECK(linker --as-needed support,
4430 gcc_cv_ld_as_needed,
4431 [gcc_cv_ld_as_needed=no
4432 if test $in_tree_ld = yes ; then
4433 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4434 && test $in_tree_ld_is_elf = yes; then
4435 gcc_cv_ld_as_needed=yes
4437 elif test x$gcc_cv_ld != x; then
4438 # Check if linker supports --as-needed and --no-as-needed options
4439 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4440 gcc_cv_ld_as_needed=yes
4444 if test x"$gcc_cv_ld_as_needed" = xyes; then
4445 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4446 [Define if your linker supports --as-needed and --no-as-needed options.])
4449 case "$target:$tm_file" in
4450 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4453 emul_name="-melf64ppc"
4456 emul_name="-melf64ppc_fbsd"
4459 AC_CACHE_CHECK(linker support for omitting dot symbols,
4460 gcc_cv_ld_no_dot_syms,
4461 [gcc_cv_ld_no_dot_syms=no
4462 if test $in_tree_ld = yes ; then
4463 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4464 gcc_cv_ld_no_dot_syms=yes
4466 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4467 cat > conftest1.s <<EOF
4471 cat > conftest2.s <<EOF
4472 .section ".opd","aw"
4477 .quad .LEfoo,.TOC.@tocbase,0
4483 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4484 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4485 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4486 gcc_cv_ld_no_dot_syms=yes
4488 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4491 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4492 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4493 [Define if your PowerPC64 linker only needs function descriptor syms.])
4496 AC_CACHE_CHECK(linker large toc support,
4497 gcc_cv_ld_large_toc,
4498 [gcc_cv_ld_large_toc=no
4499 if test $in_tree_ld = yes ; then
4500 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4501 gcc_cv_ld_large_toc=yes
4503 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4504 cat > conftest.s <<EOF
4505 .section ".tbss","awT",@nobits
4511 addis 9,13,ie0@got@tprel@ha
4512 ld 9,ie0@got@tprel@l(9)
4514 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4515 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4516 gcc_cv_ld_large_toc=yes
4518 rm -f conftest conftest.o conftest.s
4521 if test x"$gcc_cv_ld_large_toc" = xyes; then
4522 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4523 [Define if your PowerPC64 linker supports a large TOC.])
4528 AC_CACHE_CHECK(linker --build-id support,
4530 [gcc_cv_ld_buildid=no
4531 if test $in_tree_ld = yes ; then
4532 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4533 "$gcc_cv_gld_minor_version" -ge 18 -o \
4534 "$gcc_cv_gld_major_version" -gt 2 \
4535 && test $in_tree_ld_is_elf = yes; then
4536 gcc_cv_ld_buildid=yes
4538 elif test x$gcc_cv_ld != x; then
4539 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4540 gcc_cv_ld_buildid=yes
4543 if test x"$gcc_cv_ld_buildid" = xyes; then
4544 AC_DEFINE(HAVE_LD_BUILDID, 1,
4545 [Define if your linker supports --build-id.])
4548 AC_ARG_ENABLE(linker-build-id,
4549 [AS_HELP_STRING([--enable-linker-build-id],
4550 [compiler will always pass --build-id to linker])],
4552 enable_linker_build_id=no)
4554 if test x"$enable_linker_build_id" = xyes; then
4555 if test x"$gcc_cv_ld_buildid" = xyes; then
4556 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4557 [Define if gcc should always pass --build-id to linker.])
4559 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4563 # In binutils 2.21, GNU ld gained support for new emulations fully
4564 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4565 AC_CACHE_CHECK(linker *_sol2 emulation support,
4566 gcc_cv_ld_sol2_emulation,
4567 [gcc_cv_ld_sol2_emulation=no
4568 if test $in_tree_ld = yes ; then
4569 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4570 "$gcc_cv_gld_minor_version" -ge 21 -o \
4571 "$gcc_cv_gld_major_version" -gt 2 \
4572 && test $in_tree_ld_is_elf = yes; then
4573 gcc_cv_ld_sol2_emulation=yes
4575 elif test x$gcc_cv_ld != x; then
4576 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4577 grep _sol2 > /dev/null; then
4578 gcc_cv_ld_sol2_emulation=yes
4581 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4582 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4583 [Define if your linker supports the *_sol2 emulations.])
4586 AC_CACHE_CHECK(linker --sysroot support,
4588 [gcc_cv_ld_sysroot=no
4589 if test $in_tree_ld = yes ; then
4590 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4591 gcc_cv_ld_sysroot=yes
4593 elif test x$gcc_cv_ld != x; then
4594 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4595 gcc_cv_ld_sysroot=yes
4598 if test x"$gcc_cv_ld_sysroot" = xyes; then
4599 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4600 [Define if your linker supports --sysroot.])
4603 if test x$with_sysroot = x && test x$host = x$target \
4604 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4605 && test "$prefix" != "NONE"; then
4606 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4607 [Define to PREFIX/include if cpp should also search that directory.])
4610 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4611 if test "x$with_headers" != x; then
4612 target_header_dir=$with_headers
4613 elif test "x$with_sysroot" = x; then
4614 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4615 elif test "x$with_build_sysroot" != "x"; then
4616 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4617 elif test "x$with_sysroot" = xyes; then
4618 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4620 target_header_dir="${with_sysroot}${native_system_header_dir}"
4623 target_header_dir=${native_system_header_dir}
4626 # Test for stack protector support in target C library.
4627 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4628 gcc_cv_libc_provides_ssp,
4629 [gcc_cv_libc_provides_ssp=no
4631 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4632 [# glibc 2.4 and later provides __stack_chk_fail and
4633 # either __stack_chk_guard, or TLS access to stack guard canary.
4634 if test -f $target_header_dir/features.h \
4635 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4636 $target_header_dir/features.h > /dev/null; then
4637 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4638 $target_header_dir/features.h > /dev/null; then
4639 gcc_cv_libc_provides_ssp=yes
4640 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4641 $target_header_dir/features.h > /dev/null \
4642 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4643 $target_header_dir/features.h > /dev/null; then
4644 gcc_cv_libc_provides_ssp=yes
4645 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4646 $target_header_dir/features.h > /dev/null && \
4647 test -f $target_header_dir/bits/uClibc_config.h && \
4648 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4649 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4650 gcc_cv_libc_provides_ssp=yes
4652 # all versions of Bionic support stack protector
4653 elif test -f $target_header_dir/sys/cdefs.h \
4654 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
4655 $target_header_dir/sys/cdefs.h > /dev/null; then
4656 gcc_cv_libc_provides_ssp=yes
4660 # Avoid complicated tests (see
4661 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4662 # simply assert that glibc does provide this, which is true for all
4663 # realistically usable GNU/Hurd configurations.
4664 gcc_cv_libc_provides_ssp=yes;;
4665 *-*-darwin* | *-*-freebsd*)
4666 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4667 [echo "no __stack_chk_fail on this target"])
4669 *) gcc_cv_libc_provides_ssp=no ;;
4672 if test x$gcc_cv_libc_provides_ssp = xyes; then
4673 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4674 [Define if your target C library provides stack protector support])
4677 # Test for <sys/sdt.h> on the target.
4678 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4679 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4681 if test -f $target_header_dir/sys/sdt.h; then
4683 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4684 [Define if your target C library provides sys/sdt.h])
4686 AC_MSG_RESULT($have_sys_sdt_h)
4688 # Check if TFmode long double should be used by default or not.
4689 # Some glibc targets used DFmode long double, but with glibc 2.4
4690 # and later they can use TFmode.
4692 powerpc*-*-linux* | \
4696 AC_ARG_WITH(long-double-128,
4697 [AS_HELP_STRING([--with-long-double-128],
4698 [use 128-bit long double by default])],
4699 gcc_cv_target_ldbl128="$with_long_double_128",
4700 [[gcc_cv_target_ldbl128=no
4701 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4702 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4703 && gcc_cv_target_ldbl128=yes
4707 if test x$gcc_cv_target_ldbl128 = xyes; then
4708 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4709 [Define if TFmode long double should be the default])
4712 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4713 gcc_cv_target_dl_iterate_phdr=unknown
4715 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
4716 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
4717 # libdl there, both complicating its use and breaking compatibility
4718 # between Solaris 10 updates.
4719 *-*-solaris2.1[[1-9]]*)
4720 # <link.h> needs both a dl_iterate_phdr declaration and support for
4721 # compilation with largefile support.
4722 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4723 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4724 gcc_cv_target_dl_iterate_phdr=yes
4726 gcc_cv_target_dl_iterate_phdr=no
4730 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4731 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4732 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4733 [Define if your target C library provides the `dl_iterate_phdr' function.])
4735 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4737 # Find out what GC implementation we want, or may, use.
4739 [AS_HELP_STRING([--with-gc={page,zone}],
4740 [choose the garbage collection mechanism to use
4741 with the compiler])],
4748 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4751 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4756 echo "Using $GGC for garbage collection."
4758 # Libraries to use on the host. This will normally be set by the top
4759 # level Makefile. Here we simply capture the value for our Makefile.
4760 if test -z "${HOST_LIBS+set}"; then
4765 # Use the system's zlib library.
4767 zlibinc="-I\$(srcdir)/../zlib"
4768 AC_ARG_WITH(system-zlib,
4769 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4776 dnl Very limited version of automake's enable-maintainer-mode
4778 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4779 dnl maintainer-mode is disabled by default
4780 AC_ARG_ENABLE(maintainer-mode,
4781 [AS_HELP_STRING([--enable-maintainer-mode],
4782 [enable make rules and dependencies not useful
4783 (and sometimes confusing) to the casual installer])],
4784 maintainer_mode=$enableval,
4787 AC_MSG_RESULT($maintainer_mode)
4789 if test "$maintainer_mode" = "yes"; then
4800 # Make empty files to contain the specs and options for each language.
4801 # Then add #include lines to for a compiler that has specs and/or options.
4807 # These (without "all_") are set in each config-lang.in.
4808 # `language' must be a single word so is spelled singularly.
4811 all_outputs='Makefile'
4812 # List of language makefile fragments.
4814 # Additional files for gengtype
4815 all_gtfiles="$target_gtfiles"
4817 # These are the languages that are set in --enable-languages,
4818 # and are available in the GCC tree.
4819 all_selected_languages=
4821 # Add the language fragments.
4822 # Languages are added via two mechanisms. Some information must be
4823 # recorded in makefile variables, these are defined in config-lang.in.
4824 # We accumulate them and plug them into the main Makefile.
4825 # The other mechanism is a set of hooks for each of the main targets
4826 # like `clean', `install', etc.
4828 language_hooks="Make-hooks"
4830 for lang in ${srcdir}/*/config-lang.in
4833 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4835 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4836 if test "x$lang_alias" = x
4838 echo "$lang doesn't set \$language." 1>&2
4841 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4842 subdirs="$subdirs $subdir"
4844 # $gcc_subdir is where the gcc integration files are to be found
4845 # for a language, both for internal compiler purposes (compiler
4846 # sources implementing front-end to GCC tree converters), and for
4847 # build infrastructure purposes (Make-lang.in, etc.)
4849 # This will be <subdir> (relative to $srcdir) if a line like
4850 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4851 # is found in <langdir>/config-lang.in, and will remain <langdir>
4854 # Except for the language alias (fetched above), the regular
4855 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4856 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4857 # only this and the language alias.
4859 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4860 if [ "$gcc_subdir" = "" ]; then
4861 gcc_subdir="$subdir"
4864 case ",$enable_languages," in
4866 all_selected_languages="$all_selected_languages $lang_alias"
4867 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4868 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4880 . ${srcdir}/$gcc_subdir/config-lang.in
4881 if test "x$language" = x
4883 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4888 case ",$enable_languages," in
4891 for i in $subdir_requires; do
4892 test -f "${srcdir}/$i/config-lang.in" && continue
4900 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4901 if test -f $srcdir/$gcc_subdir/lang.opt; then
4902 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4903 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4905 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4906 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4908 all_languages="$all_languages $language"
4909 all_compilers="$all_compilers $compilers"
4910 all_outputs="$all_outputs $outputs"
4911 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4912 case ",$enable_languages," in
4914 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4916 AC_SUBST(enable_lto)
4922 # Pick up gtfiles for c
4924 . ${srcdir}/c-config-lang.in
4925 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4928 for language in $all_selected_languages
4930 check_languages="$check_languages check-$language"
4933 # We link each language in with a set of hooks, reached indirectly via
4934 # lang.${target}. Only do so for selected languages.
4938 target_list="all.cross start.encap rest.encap tags \
4939 install-common install-man install-info install-pdf install-html dvi \
4940 pdf html uninstall info man srcextra srcman srcinfo \
4941 mostlyclean clean distclean maintainer-clean install-plugin"
4943 for t in $target_list
4946 for lang in $all_selected_languages
4950 echo "lang.$t: $x" >> Make-hooks
4954 # Option include files
4957 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4958 option_includes="option-includes.mk"
4959 AC_SUBST_FILE(option_includes)
4967 echo "dir ." > .gdbinit
4968 echo "dir ${srcdir}" >> .gdbinit
4969 if test x$gdb_needs_out_file_path = xyes
4971 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4973 if test "x$subdirs" != x; then
4976 echo "dir ${srcdir}/$s" >> .gdbinit
4979 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4981 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4982 AC_SUBST(gcc_tooldir)
4985 # Find a directory in which to install a shared libgcc.
4987 AC_ARG_ENABLE(version-specific-runtime-libs,
4988 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
4989 [specify that runtime libraries should be
4990 installed in a compiler-specific directory])])
4992 # Substitute configuration variables
4995 AC_SUBST(all_compilers)
4996 AC_SUBST(all_gtfiles)
4997 AC_SUBST(all_lang_makefrags)
4998 AC_SUBST(all_languages)
4999 AC_SUBST(all_selected_languages)
5000 AC_SUBST(build_exeext)
5001 AC_SUBST(build_install_headers_dir)
5002 AC_SUBST(build_xm_file_list)
5003 AC_SUBST(build_xm_include_list)
5004 AC_SUBST(build_xm_defines)
5005 AC_SUBST(build_file_translate)
5006 AC_SUBST(check_languages)
5007 AC_SUBST(cpp_install_dir)
5008 AC_SUBST(xmake_file)
5009 AC_SUBST(tmake_file)
5010 AC_SUBST(TM_ENDIAN_CONFIG)
5011 AC_SUBST(TM_MULTILIB_CONFIG)
5012 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5013 AC_SUBST(extra_gcc_objs)
5014 AC_SUBST(user_headers_inc_next_pre)
5015 AC_SUBST(user_headers_inc_next_post)
5016 AC_SUBST(extra_headers_list)
5017 AC_SUBST(extra_objs)
5018 AC_SUBST(extra_passes)
5019 AC_SUBST(extra_programs)
5020 AC_SUBST(float_h_file)
5021 AC_SUBST(gcc_config_arguments)
5022 AC_SUBST(gcc_gxx_include_dir)
5023 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5024 AC_SUBST(host_exeext)
5025 AC_SUBST(host_xm_file_list)
5026 AC_SUBST(host_xm_include_list)
5027 AC_SUBST(host_xm_defines)
5028 AC_SUBST(out_host_hook_obj)
5030 AC_SUBST(lang_opt_files)
5031 AC_SUBST(lang_specs_files)
5032 AC_SUBST(lang_tree_files)
5033 AC_SUBST(local_prefix)
5035 AC_SUBST(objc_boehm_gc)
5037 AC_SUBST(out_object_file)
5038 AC_SUBST(common_out_file)
5039 AC_SUBST(common_out_object_file)
5040 AC_SUBST(tm_file_list)
5041 AC_SUBST(tm_include_list)
5042 AC_SUBST(tm_defines)
5043 AC_SUBST(tm_p_file_list)
5044 AC_SUBST(tm_p_include_list)
5045 AC_SUBST(xm_file_list)
5046 AC_SUBST(xm_include_list)
5047 AC_SUBST(xm_defines)
5048 AC_SUBST(use_gcc_stdint)
5049 AC_SUBST(c_target_objs)
5050 AC_SUBST(cxx_target_objs)
5051 AC_SUBST(fortran_target_objs)
5052 AC_SUBST(target_cpu_default)
5054 AC_SUBST_FILE(language_hooks)
5057 if test x${build} = x${host} ; then
5058 if test x${host} = x${target} ; then
5059 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5061 echo "Links are now set up to build a cross-compiler" 1>&2
5062 echo " from ${host} to ${target}." 1>&2
5065 if test x${host} = x${target} ; then
5066 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5067 echo " for ${target}." 1>&2
5069 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5070 echo " from ${host} to ${target}." 1>&2
5074 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5075 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5077 AC_ARG_VAR(PPLLIBS,[How to link PPL])
5078 AC_ARG_VAR(PPLINC,[How to find PPL include files])
5080 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5081 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5082 if test "x${CLOOGLIBS}" != "x" ; then
5083 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5086 # Check for plugin support
5087 AC_ARG_ENABLE(plugin,
5088 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5089 enable_plugin=$enableval,
5090 enable_plugin=yes; default_plugin=yes)
5096 if test x$build = x$host; then
5097 export_sym_check="nm${exeext} -g"
5098 elif test x$host = x$target; then
5099 export_sym_check="$gcc_cv_nm -g"
5105 if test x$build = x$host; then
5106 export_sym_check="objdump${exeext} -T"
5107 elif test x$host = x$target; then
5108 export_sym_check="$gcc_cv_objdump -T"
5115 if test x"$enable_plugin" = x"yes"; then
5117 AC_MSG_CHECKING([for exported symbols])
5118 if test "x$export_sym_check" != x; then
5119 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5120 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
5121 if $export_sym_check conftest | grep foobar > /dev/null; then
5122 : # No need to use a flag
5123 AC_MSG_RESULT([yes])
5125 AC_MSG_RESULT([yes])
5126 AC_MSG_CHECKING([for -rdynamic])
5127 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
5128 if $export_sym_check conftest | grep foobar > /dev/null; then
5130 pluginlibs="-rdynamic"
5135 AC_MSG_RESULT([$plugin_rdynamic])
5138 AC_MSG_RESULT([unable to check])
5143 AC_SEARCH_LIBS([dlopen], [dl])
5144 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5145 pluginlibs="$pluginlibs -ldl"
5149 # Check that we can build shared objects with -fPIC -shared
5150 saved_LDFLAGS="$LDFLAGS"
5151 saved_CFLAGS="$CFLAGS"
5154 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5155 CFLAGS="$CFLAGS -fPIC"
5156 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5159 CFLAGS="$CFLAGS -fPIC"
5160 LDFLAGS="$LDFLAGS -fPIC -shared"
5163 AC_MSG_CHECKING([for -fPIC -shared])
5165 [extern int X;],[return X == 0;],
5166 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5167 [AC_MSG_RESULT([no]); have_pic_shared=no])
5168 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5172 LDFLAGS="$saved_LDFLAGS"
5173 CFLAGS="$saved_CFLAGS"
5175 # If plugin support had been requested but not available, fail.
5176 if test x"$enable_plugin" = x"no" ; then
5177 if test x"$default_plugin" != x"yes"; then
5179 Building GCC with plugin support requires a host that supports
5180 -fPIC, -shared, -ldl and -rdynamic.])
5185 AC_SUBST(pluginlibs)
5186 AC_SUBST(enable_plugin)
5187 if test x"$enable_plugin" = x"yes"; then
5188 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5192 AC_ARG_ENABLE(libquadmath-support,
5193 [AS_HELP_STRING([--disable-libquadmath-support],
5194 [disable libquadmath support for Fortran])],
5195 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5196 ENABLE_LIBQUADMATH_SUPPORT=yes)
5197 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5198 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5199 [Define to 1 to enable libquadmath support])
5203 # Specify what hash style to use by default.
5204 AC_ARG_WITH([linker-hash-style],
5205 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5206 [specify the linker hash style])],
5207 [case x"$withval" in
5209 LINKER_HASH_STYLE=sysv
5212 LINKER_HASH_STYLE=gnu
5215 LINKER_HASH_STYLE=both
5218 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5221 [LINKER_HASH_STYLE=''])
5222 if test x"${LINKER_HASH_STYLE}" != x; then
5223 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5224 [The linker hash style])
5227 # Configure the subdirectories
5228 # AC_CONFIG_SUBDIRS($subdirs)
5230 # Create the Makefile
5231 # and configure language subdirectories
5232 AC_CONFIG_FILES($all_outputs)
5234 AC_CONFIG_COMMANDS([default],
5236 case ${CONFIG_HEADERS} in
5237 *auto-host.h:config.in*)
5240 # Make sure all the subdirs exist.
5241 for d in $subdirs doc build common c-family
5243 test -d $d || mkdir $d
5246 [subdirs='$subdirs'])