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 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 "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [ --with-local-prefix=DIR specifies directory to put local include],
109 [case "${withval}" in
110 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
112 *) local_prefix=$with_local_prefix ;;
115 # Default local prefix if it is empty
116 if test x$local_prefix = x; then
117 local_prefix=/usr/local
120 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
121 # passed in by the toplevel make and thus we'd get different behavior
122 # depending on where we built the sources.
124 # Specify the g++ header file directory
125 AC_ARG_WITH(gxx-include-dir,
126 [ --with-gxx-include-dir=DIR
127 specifies directory to put g++ header files],
128 [case "${withval}" in
129 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
131 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
134 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
135 if test x${gcc_gxx_include_dir} = x; then
136 if test x${enable_version_specific_runtime_libs} = xyes; then
137 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 libstdcxx_incdir='include/c++/$(version)'
140 if test x$host != x$target; then
141 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
143 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
147 AC_ARG_WITH(cpp_install_dir,
148 [ --with-cpp-install-dir=DIR
149 install the user visible C preprocessor in DIR
150 (relative to PREFIX) as well as PREFIX/bin],
151 [if test x$withval = xyes; then
152 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
153 elif test x$withval != xno; then
154 cpp_install_dir=$withval
157 # We would like to our source tree to be readonly. However when releases or
158 # pre-releases are generated, the flex/bison generated files as well as the
159 # various formats of manuals need to be included along with the rest of the
160 # sources. Therefore we have --enable-generated-files-in-srcdir to do
163 AC_MSG_CHECKING([whether to place generated files in the source directory])
164 dnl generated-files-in-srcdir is disabled by default
165 AC_ARG_ENABLE(generated-files-in-srcdir,
166 [ --enable-generated-files-in-srcdir
167 put copies of generated files in source dir
168 intended for creating source tarballs for users
169 without texinfo bison or flex.],
170 generated_files_in_srcdir=$enableval,
171 generated_files_in_srcdir=no)
173 AC_MSG_RESULT($generated_files_in_srcdir)
175 if test "$generated_files_in_srcdir" = "yes"; then
182 # -------------------
183 # Find default linker
184 # -------------------
188 [ --with-gnu-ld arrange to work with GNU ld.],
189 gnu_ld_flag="$with_gnu_ld",
192 # With pre-defined ld
194 [ --with-ld arrange to use the specified ld (full pathname)],
195 DEFAULT_LINKER="$with_ld")
196 if test x"${DEFAULT_LINKER+set}" = x"set"; then
197 if test ! -x "$DEFAULT_LINKER"; then
198 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
199 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
202 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
203 [Define to enable the use of a default linker.])
206 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
207 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
209 AC_MSG_CHECKING([whether a default linker was specified])
210 if test x"${DEFAULT_LINKER+set}" = x"set"; then
211 if test x"$gnu_ld_flag" = x"no"; then
212 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
214 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
220 # With demangler in GNU ld
221 AC_ARG_WITH(demangler-in-ld,
222 [ --with-demangler-in-ld try to use demangler in GNU ld.],
223 demangler_in_ld="$with_demangler_in_ld",
226 # ----------------------
227 # Find default assembler
228 # ----------------------
232 [ --with-gnu-as arrange to work with GNU as],
233 gas_flag="$with_gnu_as",
237 [ --with-as arrange to use the specified as (full pathname)],
238 DEFAULT_ASSEMBLER="$with_as")
239 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
240 if test ! -x "$DEFAULT_ASSEMBLER"; then
241 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
242 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
245 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
246 [Define to enable the use of a default assembler.])
249 gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
250 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
252 AC_MSG_CHECKING([whether a default assembler was specified])
253 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
254 if test x"$gas_flag" = x"no"; then
255 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
257 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
267 # If a non-executable a.out is present (e.g. created by GNU as above even if
268 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
269 # file, even when creating an executable, so an execution test fails.
270 # Remove possible default executable files to avoid this.
272 # FIXME: This really belongs into AC_PROG_CC and can be removed once
273 # Autoconf includes it.
274 rm -f a.out a.exe b.out
276 # Find the native compiler
280 ACX_PROG_GNAT([-I"$srcdir"/ada])
282 # autoconf is lame and doesn't give us any substitution variable for this.
283 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
284 NO_MINUS_C_MINUS_O=yes
286 OUTPUT_OPTION='-o $@'
288 AC_SUBST(NO_MINUS_C_MINUS_O)
289 AC_SUBST(OUTPUT_OPTION)
291 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
292 # optimizations to be activated explicitly by the toplevel.
295 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
299 # -------------------------
300 # Check C compiler features
301 # -------------------------
303 AC_USE_SYSTEM_EXTENSIONS
307 # sizeof(char) is 1 by definition.
308 AC_CHECK_SIZEOF(void *)
309 AC_CHECK_SIZEOF(short)
311 AC_CHECK_SIZEOF(long)
312 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
313 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
316 # ---------------------
317 # Warnings and checking
318 # ---------------------
320 # Check $CC warning features (if it's GCC).
321 # We want to use -pedantic, but we don't want warnings about
325 # So, we only use -pedantic if we can disable those warnings.
327 ACX_PROG_CC_WARNING_OPTS(
328 m4_quote(m4_do([-W -Wall -Wwrite-strings -Wcast-qual])), [loose_warn])
329 ACX_PROG_CC_WARNING_OPTS(
330 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
332 ACX_PROG_CC_WARNING_OPTS(
333 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
334 ACX_PROG_CC_WARNING_OPTS(
335 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
336 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
337 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
338 [-Wno-overlength-strings])), [strict_warn])
339 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
341 # The above macros do nothing if the compiler is not GCC. However, the
342 # Makefile has more goo to add other flags, so these variables are used
343 # to enable warnings only for GCC.
346 if test "x$GCC" = "xyes"; then
347 warn_cflags='$(GCC_WARN_CFLAGS)'
348 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
350 AC_SUBST(warn_cflags)
351 AC_SUBST(warn_cxxflags)
353 # Enable expensive internal checks
355 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
359 AC_ARG_ENABLE(checking,
360 [ --enable-checking[=LIST]
361 enable expensive run-time checks. With LIST,
362 enable only specific categories of checks.
363 Categories are: yes,no,all,none,release.
364 Flags are: assert,df,fold,gc,gcac,gimple,misc,
365 rtlflag,rtl,runtime,tree,valgrind,types.],
366 [ac_checking_flags="${enableval}"],[
367 # Determine the default checks.
368 if test x$is_release = x ; then
369 ac_checking_flags=yes
371 ac_checking_flags=release
373 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
374 for check in release $ac_checking_flags
377 # these set all the flags to specific states
378 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
379 ac_fold_checking= ; ac_gc_checking=1 ;
380 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
381 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
382 ac_tree_checking=1 ; ac_valgrind_checking= ;
383 ac_types_checking=1 ;;
384 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
385 ac_fold_checking= ; ac_gc_checking= ;
386 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
387 ac_rtlflag_checking= ; ac_runtime_checking= ;
388 ac_tree_checking= ; ac_valgrind_checking= ;
389 ac_types_checking= ;;
390 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
391 ac_fold_checking=1 ; ac_gc_checking=1 ;
392 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
393 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
394 ac_tree_checking=1 ; ac_valgrind_checking= ;
395 ac_types_checking=1 ;;
396 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
397 ac_fold_checking= ; ac_gc_checking= ;
398 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
399 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
400 ac_tree_checking= ; ac_valgrind_checking= ;
401 ac_types_checking= ;;
402 # these enable particular checks
403 assert) ac_assert_checking=1 ;;
404 df) ac_df_checking=1 ;;
405 fold) ac_fold_checking=1 ;;
406 gc) ac_gc_checking=1 ;;
407 gcac) ac_gc_always_collect=1 ;;
408 gimple) ac_gimple_checking=1 ;;
409 misc) ac_checking=1 ;;
410 rtl) ac_rtl_checking=1 ;;
411 rtlflag) ac_rtlflag_checking=1 ;;
412 runtime) ac_runtime_checking=1 ;;
413 tree) ac_tree_checking=1 ;;
414 types) ac_types_checking=1 ;;
415 valgrind) ac_valgrind_checking=1 ;;
416 *) AC_MSG_ERROR(unknown check category $check) ;;
422 if test x$ac_checking != x ; then
423 AC_DEFINE(ENABLE_CHECKING, 1,
424 [Define if you want more run-time sanity checks. This one gets a grab
425 bag of miscellaneous but relatively cheap checks.])
426 nocommon_flag=-fno-common
428 AC_SUBST(nocommon_flag)
429 if test x$ac_df_checking != x ; then
430 AC_DEFINE(ENABLE_DF_CHECKING, 1,
431 [Define if you want more run-time sanity checks for dataflow.])
433 if test x$ac_assert_checking != x ; then
434 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
435 [Define if you want assertions enabled. This is a cheap check.])
437 if test x$ac_gimple_checking != x ; then
438 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
439 [Define if you want operations on GIMPLE (the basic data structure of
440 the high-level optimizers) to be checked for dynamic type safety at
441 runtime. This is moderately expensive.])
443 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
444 if test x$ac_runtime_checking != x ; then
445 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
446 [Define if you want runtime assertions enabled. This is a cheap check.])
448 if test x$ac_tree_checking != x ; then
449 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
450 [Define if you want all operations on trees (the basic data
451 structure of the front ends) to be checked for dynamic type safety
452 at runtime. This is moderately expensive. The tree browser debugging
453 routines will also be enabled by this option.
455 TREEBROWSER=tree-browser.o
457 if test x$ac_types_checking != x ; then
458 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
459 [Define if you want all gimple types to be verified after gimplifiation.
463 AC_SUBST(TREEBROWSER)
464 if test x$ac_rtl_checking != x ; then
465 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
466 [Define if you want all operations on RTL (the basic data structure
467 of the optimizer and back end) to be checked for dynamic type safety
468 at runtime. This is quite expensive.])
470 if test x$ac_rtlflag_checking != x ; then
471 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
472 [Define if you want RTL flag accesses to be checked against the RTL
473 codes that are supported for each access macro. This is relatively
476 if test x$ac_gc_checking != x ; then
477 AC_DEFINE(ENABLE_GC_CHECKING, 1,
478 [Define if you want the garbage collector to do object poisoning and
479 other memory allocation checks. This is quite expensive.])
481 if test x$ac_gc_always_collect != x ; then
482 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
483 [Define if you want the garbage collector to operate in maximally
484 paranoid mode, validating the entire heap and collecting garbage at
485 every opportunity. This is extremely expensive.])
487 if test x$ac_fold_checking != x ; then
488 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
489 [Define if you want fold checked that it never destructs its argument.
490 This is quite expensive.])
492 valgrind_path_defines=
495 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
496 dnl # an if statement. This was the source of very frustrating bugs
497 dnl # in converting to autoconf 2.5x!
498 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
500 if test x$ac_valgrind_checking != x ; then
501 # It is certainly possible that there's valgrind but no valgrind.h.
502 # GCC relies on making annotations so we must have both.
503 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
504 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
505 [[#include <valgrind/memcheck.h>
506 #ifndef VALGRIND_DISCARD
507 #error VALGRIND_DISCARD not defined
509 [gcc_cv_header_valgrind_memcheck_h=yes],
510 [gcc_cv_header_valgrind_memcheck_h=no])
511 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
512 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
513 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
514 [[#include <memcheck.h>
515 #ifndef VALGRIND_DISCARD
516 #error VALGRIND_DISCARD not defined
518 [gcc_cv_header_memcheck_h=yes],
519 [gcc_cv_header_memcheck_h=no])
520 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
521 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
522 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
523 if test "x$valgrind_path" = "x" \
524 || (test $have_valgrind_h = no \
525 && test $gcc_cv_header_memcheck_h = no \
526 && test $gcc_cv_header_valgrind_memcheck_h = no); then
527 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
529 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
530 valgrind_command="$valgrind_path -q"
531 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
532 [Define if you want to run subprograms and generated programs
533 through valgrind (a memory checker). This is extremely expensive.])
534 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
535 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
536 [Define if valgrind's valgrind/memcheck.h header is installed.])
538 if test $gcc_cv_header_memcheck_h = yes; then
539 AC_DEFINE(HAVE_MEMCHECK_H, 1,
540 [Define if valgrind's memcheck.h header is installed.])
543 AC_SUBST(valgrind_path_defines)
544 AC_SUBST(valgrind_command)
546 # Enable code coverage collection
547 AC_ARG_ENABLE(coverage,
548 [ --enable-coverage[=LEVEL]
549 enable compiler's code coverage collection.
550 Use to measure compiler performance and locate
551 unused parts of the compiler. With LEVEL, specify
552 optimization. Values are opt, noopt,
554 [case "${enableval}" in
556 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
559 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
562 # a.k.a. --disable-coverage
566 AC_MSG_ERROR(unknown coverage setting $enableval)
570 AC_SUBST(coverage_flags)
572 AC_ARG_ENABLE(gather-detailed-mem-stats,
573 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
574 [enable_gather_detailed_mem_stats=no])
575 if test x$enable_gather_detailed_mem_stats = xyes ; then
576 AC_DEFINE(GATHER_STATISTICS, 1,
577 [Define to enable detailed memory allocation stats gathering.])
580 # -------------------------------
581 # Miscenalleous configure options
582 # -------------------------------
584 # See if we are building gcc with C++.
585 AC_ARG_ENABLE(build-with-cxx,
586 [ --enable-build-with-cxx build with C++ compiler instead of C compiler],
587 ENABLE_BUILD_WITH_CXX=$enableval,
588 ENABLE_BUILD_WITH_CXX=no)
589 AC_SUBST(ENABLE_BUILD_WITH_CXX)
593 [ --with-stabs arrange to use stabs instead of host debug format],
597 # Determine whether or not multilibs are enabled.
598 AC_ARG_ENABLE(multilib,
599 [ --enable-multilib enable library support for multiple ABIs],
600 [], [enable_multilib=yes])
601 AC_SUBST(enable_multilib)
603 # Enable __cxa_atexit for C++.
604 AC_ARG_ENABLE(__cxa_atexit,
605 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
608 # Enable C extension for decimal float if target supports it.
609 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
611 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
612 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
613 [Define to 1 to enable decimal float extension to C.])
615 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
616 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
617 [Define to 1 to specify that we are using the BID decimal floating
618 point format instead of DPD])
620 # Enable C extension for fixed-point arithmetic.
621 AC_ARG_ENABLE(fixed-point,
622 [ --enable-fixed-point enable fixed-point arithmetic extension to C],
630 AC_MSG_WARN([fixed-point is not supported on IRIX, ignored])
631 enable_fixed_point=no
634 enable_fixed_point=yes
639 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
640 enable_fixed_point=no
644 AC_SUBST(enable_fixed_point)
646 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
647 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
648 [Define to 1 to enable fixed-point arithmetic extension to C.])
651 # Pass with no value to take the default
652 # Pass with a value to specify a thread package
653 AC_ARG_ENABLE(threads,
654 [ --enable-threads enable thread usage for target GCC
655 --enable-threads=LIB use LIB thread package for target GCC],,
659 [ --enable-tls enable or disable generation of tls code
660 overriding the assembler check for tls support],
664 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
665 Valid choices are 'yes' and 'no'.]) ;;
669 AC_ARG_ENABLE(objc-gc,
670 [ --enable-objc-gc enable the use of Boehm's garbage collector with
671 the GNU Objective-C runtime],
672 if test x$enable_objc_gc = xno; then
680 [ --with-dwarf2 force the default debug format to be DWARF 2],
681 dwarf2="$with_dwarf2",
684 AC_ARG_ENABLE(shared,
685 [ --disable-shared don't provide a shared libgcc],
687 case $enable_shared in
691 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
692 for pkg in $enableval; do
693 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
700 ], [enable_shared=yes])
701 AC_SUBST(enable_shared)
703 AC_ARG_WITH(build-sysroot,
704 [ --with-build-sysroot=sysroot
705 use sysroot as the system root during the build])
708 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
710 case ${with_sysroot} in
711 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
712 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
715 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
716 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
718 if test "x$prefix" = xNONE; then
719 test_prefix=/usr/local
723 if test "x$exec_prefix" = xNONE; then
724 test_exec_prefix=$test_prefix
726 test_exec_prefix=$exec_prefix
728 case ${TARGET_SYSTEM_ROOT} in
729 "${test_prefix}"|"${test_prefix}/"*|\
730 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
731 '${prefix}'|'${prefix}/'*|\
732 '${exec_prefix}'|'${exec_prefix}/'*)
733 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
734 TARGET_SYSTEM_ROOT_DEFINE="$t"
739 TARGET_SYSTEM_ROOT_DEFINE=
740 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
742 AC_SUBST(TARGET_SYSTEM_ROOT)
743 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
744 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
747 [AS_HELP_STRING([--with-specs=SPECS],
748 [add SPECS to driver command-line processing])],
749 [CONFIGURE_SPECS=$withval],
752 AC_SUBST(CONFIGURE_SPECS)
754 # Build with intermodule optimisations
755 AC_ARG_ENABLE(intermodule,
756 [ --enable-intermodule build the compiler in one step],
757 [case ${enable_intermodule} in
758 yes) onestep="-onestep";;
764 ACX_PKGVERSION([GCC])
765 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
767 # Sanity check enable_languages in case someone does not run the toplevel
768 # configure # script.
769 AC_ARG_ENABLE(languages,
770 [ --enable-languages=LIST specify which front-ends to build],
771 [case ,${enable_languages}, in
773 # go safe -- we cannot be much sure without the toplevel
775 # analysis of which target libs are present and usable
779 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
784 enable_languages=c,${enable_languages}
787 [enable_languages=c])
789 AC_ARG_WITH(multilib-list,
790 [ --with-multilib-list Select multilibs (SH only)],
792 with_multilib_list=default)
794 # -------------------------
795 # Checks for other programs
796 # -------------------------
800 # Find some useful tools
802 # We need awk to create options.c and options.h.
803 # Bail out if it's missing.
805 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
813 # By default, the Darwin ranlib will not treat common symbols as
814 # definitions when building the archive table of contents. Other
815 # ranlibs do that; pass an option to the Darwin ranlib that makes
816 # it behave similarly.
822 AC_SUBST(ranlib_flags)
826 # See if cmp has --ignore-initial.
827 gcc_AC_PROG_CMP_IGNORE_INITIAL
829 # See if we have the mktemp command.
830 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
832 # See if makeinfo has been installed and is modern enough
833 # that we can use it.
834 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
835 [GNU texinfo.* \([0-9][0-9.]*\)],
836 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
837 if test $gcc_cv_prog_makeinfo_modern = no; then
839 *** Makeinfo is missing or too old.
840 *** Info documentation will not be built.])
847 # Is pod2man recent enough to regenerate manpages?
848 AC_MSG_CHECKING([for recent Pod::Man])
849 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
851 GENERATED_MANPAGES=generated-manpages
856 AC_SUBST(GENERATED_MANPAGES)
858 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
861 dnl Don't use AC_PROG_LEX; we insist on flex.
862 dnl LEXLIB is not useful in gcc.
863 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
866 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
868 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
869 # check for build == host before using them.
872 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
873 && test -d ../binutils ; then
874 NM='${objdir}/../binutils/nm-new'
876 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
880 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
881 && test -d ../binutils ; then
882 AR='${objdir}/../binutils/ar'
884 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
888 # --------------------
889 # Checks for C headers
890 # --------------------
892 # Need to reject headers which give warnings, so that the -Werror bootstrap
893 # works later. *sigh* This needs to come before all header checks.
900 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
901 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
902 sys/resource.h sys/param.h sys/times.h sys/stat.h \
903 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
905 # Check for thread headers.
906 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
907 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
909 # These tests can't be done till we know if we have limits.h.
918 # These libraries may be used by collect2.
919 # We may need a special search path to get them linked.
920 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
922 for libs in '' -lld -lmld \
923 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
924 '-L/usr/lib/cmplrs/cc3.11 -lmld'
927 AC_TRY_LINK_FUNC(ldopen,
928 [gcc_cv_collect2_libs="$libs"; break])
931 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
932 case $gcc_cv_collect2_libs in
934 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
936 AC_SUBST(COLLECT2_LIBS)
938 # When building Ada code on Alpha, we need exc_resume which is usually in
939 # -lexc. So test for it.
942 AC_SEARCH_LIBS(exc_resume, exc)
945 AC_SUBST(GNAT_LIBEXC)
947 # Some systems put ldexp and frexp in libm instead of libc; assume
948 # they're both in the same place. jcf-dump needs them.
951 AC_SEARCH_LIBS(ldexp, m)
956 # Use <inttypes.h> only if it exists,
957 # doesn't clash with <sys/types.h>, and declares intmax_t.
958 AC_MSG_CHECKING(for inttypes.h)
959 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
960 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
961 [[#include <sys/types.h>
962 #include <inttypes.h>]],
963 [[intmax_t i = -1;]])],
964 [gcc_cv_header_inttypes_h=yes],
965 [gcc_cv_header_inttypes_h=no])])
966 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
967 if test $gcc_cv_header_inttypes_h = yes; then
968 AC_DEFINE(HAVE_INTTYPES_H, 1,
969 [Define if you have a working <inttypes.h> header file.])
972 dnl Disabled until we have a complete test for buggy enum bitfields.
973 dnl gcc_AC_C_ENUM_BF_UNSIGNED
975 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
976 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
977 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
978 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
979 putchar_unlocked putc_unlocked)
980 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
981 sysconf strsignal getrusage nl_langinfo \
982 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
985 save_CPPFLAGS="$CPPFLAGS"
987 LIBS="$LIBS $LIBELFLIBS"
988 AC_CHECK_FUNCS(elf_getshdrstrndx,,
989 [AC_CHECK_FUNCS(elf_getshstrndx,
990 [AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
994 return elf_getshstrndx (NULL, 0) == 0;
995 }]])], AC_DEFINE(HAVE_ELF_GETSHSTRNDX_GABI, 1,
996 [Define if elf_getshstrndx has gABI conformant return values.]))])]
999 CPPFLAGS="$save_CPPFLAGS"
1001 if test x$ac_cv_func_mbstowcs = xyes; then
1002 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1003 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1009 [gcc_cv_func_mbstowcs_works=yes],
1010 [gcc_cv_func_mbstowcs_works=no],
1011 [gcc_cv_func_mbstowcs_works=yes])])
1012 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1013 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1014 [Define this macro if mbstowcs does not crash when its
1015 first argument is NULL.])
1019 AC_CHECK_TYPE(ssize_t, int)
1020 AC_CHECK_TYPE(caddr_t, char *)
1022 gcc_AC_FUNC_MMAP_BLACKLIST
1026 # Under VMS, vfork works very differently than on Unix. The standard test
1027 # won't work, and it isn't easily adaptable. It makes more sense to
1029 ac_cv_func_vfork_works=yes
1035 # Until we have in-tree GNU iconv:
1037 AC_SUBST(LIBICONV_DEP)
1043 # We will need to find libiberty.h and ansidecl.h
1044 saved_CFLAGS="$CFLAGS"
1045 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1046 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1047 strsignal strstr strverscmp \
1048 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1049 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1050 #include "ansidecl.h"
1051 #include "system.h"])
1053 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1054 #include "ansidecl.h"
1056 #ifdef HAVE_SYS_RESOURCE_H
1057 #include <sys/resource.h>
1061 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1062 #include "ansidecl.h"
1064 #ifdef HAVE_SYS_RESOURCE_H
1065 #include <sys/resource.h>
1067 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1068 [Define to `long' if <sys/resource.h> doesn't define.])])
1070 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1071 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1072 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1073 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1074 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1075 #include "ansidecl.h"
1084 gcc_AC_CHECK_DECLS(times, , ,[
1085 #include "ansidecl.h"
1087 #ifdef HAVE_SYS_TIMES_H
1088 #include <sys/times.h>
1092 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1093 #include "ansidecl.h"
1098 # More time-related stuff.
1099 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1100 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1101 #include "ansidecl.h"
1103 #ifdef HAVE_SYS_TIMES_H
1104 #include <sys/times.h>
1106 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1107 if test $ac_cv_struct_tms = yes; then
1108 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1109 [Define if <sys/times.h> defines struct tms.])
1112 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1113 # revisit after autoconf 2.50.
1114 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1115 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1116 #include "ansidecl.h"
1118 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1119 if test $gcc_cv_type_clock_t = yes; then
1120 AC_DEFINE(HAVE_CLOCK_T, 1,
1121 [Define if <time.h> defines clock_t.])
1124 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1125 CFLAGS="$saved_CFLAGS"
1127 gcc_AC_INITFINI_ARRAY
1129 # mkdir takes a single argument on some systems.
1130 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1138 # With Setjmp/Longjmp based exception handling.
1139 AC_ARG_ENABLE(sjlj-exceptions,
1140 [ --enable-sjlj-exceptions
1141 arrange to use setjmp/longjmp exception handling],
1144 if test $enableval != yes; then
1145 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1150 force_sjlj_exceptions=yes],
1153 force_sjlj_exceptions=yes
1157 force_sjlj_exceptions=no
1160 if test $force_sjlj_exceptions = yes; then
1161 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1162 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1163 [Define 0/1 to force the choice for exception handling model.])
1166 # For platforms with the unwind ABI which includes an unwind library,
1167 # libunwind, we can choose to use the system libunwind.
1168 # config.gcc also contains tests of with_system_libunwind.
1169 GCC_CHECK_UNWIND_GETIPINFO
1171 # --------------------------------------------------------
1172 # Build, host, and target specific configuration fragments
1173 # --------------------------------------------------------
1175 # Collect build-machine-specific information.
1176 . ${srcdir}/config.build
1178 # Collect host-machine-specific information.
1179 . ${srcdir}/config.host
1183 # Collect target-machine-specific information.
1184 . ${srcdir}/config.gcc
1186 extra_objs="${host_extra_objs} ${extra_objs}"
1187 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1189 # Default the target-machine variables that were not explicitly set.
1190 if test x"$tm_file" = x
1191 then tm_file=$cpu_type/$cpu_type.h; fi
1193 if test x"$extra_headers" = x
1194 then extra_headers=; fi
1196 if test x$md_file = x
1197 then md_file=$cpu_type/$cpu_type.md; fi
1199 if test x$out_file = x
1200 then out_file=$cpu_type/$cpu_type.c; fi
1202 if test x"$tmake_file" = x
1203 then tmake_file=$cpu_type/t-$cpu_type
1206 if test x"$dwarf2" = xyes
1207 then tm_file="$tm_file tm-dwarf2.h"
1210 # Say what files are being used for the output code and MD file.
1211 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1212 echo "Using \`$srcdir/config/$md_file' as machine description file."
1214 # If any of the xm_file variables contain nonexistent files, warn
1215 # about them and drop them.
1218 for x in $build_xm_file; do
1219 if test -f $srcdir/config/$x
1221 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1227 for x in $host_xm_file; do
1228 if test -f $srcdir/config/$x
1230 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1236 for x in $xm_file; do
1237 if test -f $srcdir/config/$x
1239 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1245 for f in $tm_file; do
1248 if test $count = ax; then
1249 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1251 echo "Using the following target machine macro files:"
1252 for f in $tm_file; do
1253 echo " $srcdir/config/$f"
1257 if test x$need_64bit_hwint = xyes; then
1258 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1259 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1262 if test x$use_long_long_for_widest_fast_int = xyes; then
1263 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1264 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1265 efficiently supported by the host hardware.])
1269 for f in $host_xm_file; do
1272 if test $count = a; then
1274 elif test $count = ax; then
1275 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1277 echo "Using the following host machine macro files:"
1278 for f in $host_xm_file; do
1279 echo " $srcdir/config/$f"
1282 echo "Using ${out_host_hook_obj} for host machine hooks."
1284 if test "$host_xm_file" != "$build_xm_file"; then
1286 for f in $build_xm_file; do
1289 if test $count = a; then
1291 elif test $count = ax; then
1292 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1294 echo "Using the following build machine macro files:"
1295 for f in $build_xm_file; do
1296 echo " $srcdir/config/$f"
1303 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1304 gcc_cv_mcontext_underscores,
1306 #include <sys/cdefs.h>
1307 #include <sys/signal.h>
1308 #include <ucontext.h>
1309 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1311 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1312 if test $gcc_cv_mcontext_underscores = yes; then
1313 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1314 [mcontext_t fields start with __])
1323 # Check if a valid thread package
1324 case ${enable_threads} in
1327 target_thread_file='single'
1331 target_thread_file='single'
1333 aix | dce | gnat | irix | posix | posix95 | rtems | \
1334 single | solaris | vxworks | win32 | mipssde)
1335 target_thread_file=${enable_threads}
1338 echo "${enable_threads} is an unknown thread package" 1>&2
1343 if test x${thread_file} = x; then
1344 # No thread file set by target-specific clauses in config.gcc,
1345 # so use file chosen by default logic above
1346 thread_file=${target_thread_file}
1349 # Make gthr-default.h if we have a thread file.
1351 if test $thread_file != single; then
1352 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1353 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1354 rm -f gthr-default.h-t
1356 mv -f gthr-default.h-t gthr-default.h
1358 gthread_flags=-DHAVE_GTHR_DEFAULT
1360 AC_SUBST(gthread_flags)
1367 if test x$enable___cxa_atexit = xyes || \
1368 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1369 if test x$host = x$target; then
1371 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1372 # keyed to flag_use_cxa_atexit
1377 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1378 [echo "__cxa_atexit can't be enabled on this target"])
1382 # We can't check for __cxa_atexit when building a cross, so assume
1386 if test x$use_cxa_atexit = xyes; then
1387 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1388 [Define if you want to use __cxa_atexit, rather than atexit, to
1389 register C++ destructors for local statics and global objects.
1390 This is essential for fully standards-compliant handling of
1391 destructors, but requires __cxa_atexit in libc.])
1395 # Look for a file containing extra machine modes.
1396 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1397 extra_modes_file='$(srcdir)'/config/${extra_modes}
1398 AC_SUBST(extra_modes_file)
1399 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1400 [Define to the name of a file containing a list of extra machine modes
1401 for this architecture.])
1404 # Convert extra_options into a form suitable for Makefile use.
1406 for f in $extra_options; do
1407 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1409 AC_SUBST(extra_opt_files)
1411 # auto-host.h is the file containing items generated by autoconf and is
1412 # the first file included by config.h.
1413 # If host=build, it is correct to have bconfig include auto-host.h
1414 # as well. If host!=build, we are in error and need to do more
1415 # work to find out the build config parameters.
1416 if test x$host = x$build
1418 build_auto=auto-host.h
1420 # We create a subdir, then run autoconf in the subdir.
1421 # To prevent recursion we set host and build for the new
1422 # invocation of configure to the build for this invocation
1429 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1430 *) realsrcdir=../${srcdir};;
1432 saved_CFLAGS="${CFLAGS}"
1433 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1434 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1435 ${realsrcdir}/configure \
1436 --enable-languages=${enable_languages-all} \
1437 --target=$target_alias --host=$build_alias --build=$build_alias
1438 CFLAGS="${saved_CFLAGS}"
1440 # We just finished tests for the build machine, so rename
1441 # the file auto-build.h in the gcc directory.
1442 mv auto-host.h ../auto-build.h
1445 build_auto=auto-build.h
1447 AC_SUBST(build_subdir)
1449 tm_file="${tm_file} defaults.h"
1450 tm_p_file="${tm_p_file} tm-preds.h"
1451 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1452 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1453 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1454 # put this back in temporarily.
1455 xm_file="auto-host.h ansidecl.h ${xm_file}"
1462 # Compile in configure arguments.
1463 if test -f configargs.h ; then
1464 # Being re-configured.
1465 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1466 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1468 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1471 # Double all backslashes and backslash all quotes to turn
1472 # gcc_config_arguments into a C string.
1473 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1474 $gcc_config_arguments
1476 gcc_config_arguments_str=`cat conftest.out`
1479 cat > configargs.h <<EOF
1480 /* Generated automatically. */
1481 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1482 static const char thread_model[] = "$thread_file";
1484 static const struct {
1485 const char *name, *value;
1486 } configure_default_options[] = $configure_default_options;
1491 gcc_BASEVER=`cat $srcdir/BASE-VER`
1492 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1493 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1494 if test -f $srcdir/REVISION ; then
1495 gcc_REVISION=`cat $srcdir/REVISION`
1499 cat > plugin-version.h <<EOF
1500 #include "configargs.h"
1502 static char basever[] = "$gcc_BASEVER";
1503 static char datestamp[] = "$gcc_DATESTAMP";
1504 static char devphase[] = "$gcc_DEVPHASE";
1505 static char revision[] = "$gcc_REVISION";
1507 /* FIXME plugins: We should make the version information more precise.
1508 One way to do is to add a checksum. */
1510 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1512 configuration_arguments};
1516 # Internationalization
1517 ZW_GNU_GETTEXT_SISTER_DIR
1519 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1520 # -liconv on the link line twice.
1521 case "$LIBINTL" in *$LIBICONV*)
1525 AC_ARG_ENABLE(secureplt,
1526 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1529 AC_ARG_ENABLE(leading-mingw64-underscores,
1530 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1531 [Enable leading underscores on 64 bit mingw targets]),
1533 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1534 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1535 [Define if we should use leading underscore on 64 bit mingw targets])])
1538 [ --enable-cld enable -mcld by default for 32bit x86], [],
1541 AC_ARG_ENABLE(frame-pointer,
1542 [ --enable-frame-pointer enable -fno-omit-frame-pointer by default for 32bit x86], [],
1545 linux* | darwin[[8912]]*)
1546 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1548 enable_frame_pointer=no
1551 enable_frame_pointer=yes
1556 # Windows32 Registry support for specifying GCC installation paths.
1557 AC_ARG_ENABLE(win32-registry,
1558 [ --disable-win32-registry
1559 disable lookup of installation paths in the
1560 Registry on Windows hosts
1561 --enable-win32-registry enable registry lookup (default)
1562 --enable-win32-registry=KEY
1563 use KEY instead of GCC version as the last portion
1564 of the registry key],,)
1567 win32 | pe | cygwin* | mingw32* | uwin*)
1568 if test "x$enable_win32_registry" != xno; then
1569 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1572 if test "x$enable_win32_registry" != xno; then
1573 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1574 [Define to 1 if installation paths should be looked up in the Windows
1575 Registry. Ignored on non-Windows hosts.])
1577 if test "x$enable_win32_registry" != xyes \
1578 && test "x$enable_win32_registry" != x; then
1579 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1580 [Define to be the last component of the Windows registry key under which
1581 to look for installation paths. The full key used will be
1582 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1583 The default is the GCC version number.])
1589 # Get an absolute path to the GCC top-level source directory
1590 holddir=`${PWDCMD-pwd}`
1592 topdir=`${PWDCMD-pwd}`
1595 # Conditionalize the makefile for this host machine.
1597 for f in ${host_xmake_file}
1599 if test -f ${srcdir}/config/$f
1601 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1605 # Conditionalize the makefile for this target machine.
1607 for f in ${tmake_file}
1609 if test -f ${srcdir}/config/$f
1611 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1614 tmake_file="${tmake_file_}"
1616 out_object_file=`basename $out_file .c`.o
1618 tm_file_list="options.h"
1619 tm_include_list="options.h insn-constants.h"
1620 for f in $tm_file; do
1623 f=`echo $f | sed 's/^..//'`
1624 tm_file_list="${tm_file_list} $f"
1625 tm_include_list="${tm_include_list} $f"
1628 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1629 tm_include_list="${tm_include_list} $f"
1632 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1633 tm_include_list="${tm_include_list} config/$f"
1640 for f in $tm_p_file; do
1643 tm_p_file_list="${tm_p_file_list} $f"
1644 tm_p_include_list="${tm_p_include_list} $f"
1647 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1648 tm_p_include_list="${tm_p_include_list} config/$f"
1654 for f in $xm_file; do
1657 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1658 xm_include_list="${xm_include_list} $f"
1661 xm_file_list="${xm_file_list} $f"
1662 xm_include_list="${xm_include_list} $f"
1665 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1666 xm_include_list="${xm_include_list} config/$f"
1672 host_xm_include_list=
1673 for f in $host_xm_file; do
1676 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1677 host_xm_include_list="${host_xm_include_list} $f"
1680 host_xm_file_list="${host_xm_file_list} $f"
1681 host_xm_include_list="${host_xm_include_list} $f"
1684 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1685 host_xm_include_list="${host_xm_include_list} config/$f"
1691 for f in $build_xm_file; do
1694 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1695 build_xm_include_list="${build_xm_include_list} $f"
1697 auto-build.h | auto-host.h )
1698 build_xm_file_list="${build_xm_file_list} $f"
1699 build_xm_include_list="${build_xm_include_list} $f"
1702 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1703 build_xm_include_list="${build_xm_include_list} config/$f"
1708 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1709 # cross-compiler which does not use the native headers and libraries.
1710 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1711 CROSS= AC_SUBST(CROSS)
1712 ALL=all.internal AC_SUBST(ALL)
1713 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1715 if test "x$with_build_sysroot" != x; then
1716 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1718 # This value is used, even on a native system, because
1719 # CROSS_SYSTEM_HEADER_DIR is just
1720 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1721 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1724 if test x$host != x$target
1726 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1728 SYSTEM_HEADER_DIR=$build_system_header_dir
1729 case "$host","$target" in
1730 # Darwin crosses can use the host system's libraries and headers,
1731 # because of the fat library support. Of course, it must be the
1732 # same version of Darwin on both sides. Allow the user to
1733 # just say --target=foo-darwin without a version number to mean
1734 # "the version on this system".
1735 *-*-darwin*,*-*-darwin*)
1736 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1737 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1738 if test $hostos = $targetos -o $targetos = darwin ; then
1740 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1745 i?86-*-*,x86_64-*-* \
1746 | powerpc*-*-*,powerpc64*-*-*)
1747 CROSS="$CROSS -DNATIVE_CROSS" ;;
1749 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1750 SYSTEM_HEADER_DIR=$build_system_header_dir
1753 # If this is a cross-compiler that does not
1754 # have its own set of headers then define
1757 # If this is using newlib, without having the headers available now,
1758 # then define inhibit_libc in LIBGCC2_CFLAGS.
1759 # This prevents libgcc2 from containing any code which requires libc
1761 : ${inhibit_libc=false}
1762 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1763 test x$with_newlib = xyes ; } &&
1764 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1767 AC_SUBST(inhibit_libc)
1769 # When building gcc with a cross-compiler, we need to adjust things so
1770 # that the generator programs are still built with the native compiler.
1771 # Also, we cannot run fixincludes.
1773 # These are the normal (build=host) settings:
1774 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1775 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1776 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1777 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1779 # And these apply if build != host, or we are generating coverage data
1780 if test x$build != x$host || test "x$coverage_flags" != x
1782 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1783 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1786 # Expand extra_headers to include complete path.
1787 # This substitutes for lots of t-* files.
1789 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1790 for file in ${extra_headers} ; do
1791 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1794 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1795 if test x"$use_gcc_tgmath" = xyes
1796 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1799 # Define collect2 in Makefile.
1800 case $host_can_use_collect2 in
1802 *) collect2='collect2$(exeext)' ;;
1804 AC_SUBST([collect2])
1806 # Add a definition of USE_COLLECT2 if system wants one.
1807 case $use_collect2 in
1808 no) use_collect2= ;;
1811 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1812 xm_defines="${xm_defines} USE_COLLECT2"
1813 case $host_can_use_collect2 in
1815 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1821 # ---------------------------
1822 # Assembler & linker features
1823 # ---------------------------
1825 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1826 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1827 # However when ld-new is first executed from the build tree, libtool will
1828 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1829 # to the build tree. While doing this we need to use the previous-stage
1830 # linker, or we have an infinite loop. The presence of a shell script as
1831 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1832 # the gcc/collect-ld script. So we need to know how libtool works, or
1833 # exec-tool will fail.
1835 m4_defun([_LT_CONFIG_COMMANDS], [])
1838 AC_SUBST(enable_fast_install)
1840 # Identify the assembler which will work hand-in-glove with the newly
1841 # built GCC, so that we can examine its features. This is the assembler
1842 # which will be driven by the driver program.
1844 # If build != host, and we aren't building gas in-tree, we identify a
1845 # build->target assembler and hope that it will have the same features
1846 # as the host->target assembler we'll be using.
1847 gcc_cv_gas_major_version=
1848 gcc_cv_gas_minor_version=
1849 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1851 m4_pattern_allow([AS_FOR_TARGET])dnl
1852 AS_VAR_SET_IF(gcc_cv_as,, [
1853 if test -x "$DEFAULT_ASSEMBLER"; then
1854 gcc_cv_as="$DEFAULT_ASSEMBLER"
1855 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1856 && test -f ../gas/Makefile \
1857 && test x$build = x$host; then
1858 gcc_cv_as=../gas/as-new$build_exeext
1859 elif test -x as$build_exeext; then
1860 # Build using assembler in the current directory.
1861 gcc_cv_as=./as$build_exeext
1862 elif test -x $AS_FOR_TARGET; then
1863 gcc_cv_as="$AS_FOR_TARGET"
1865 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1868 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1869 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1870 case "$ORIGINAL_AS_FOR_TARGET" in
1871 ./as | ./as$build_exeext) ;;
1872 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1875 AC_MSG_CHECKING(what assembler to use)
1876 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1877 # Single tree build which includes gas. We want to prefer it
1878 # over whatever linker top-level may have detected, since
1879 # we'll use what we're building after installation anyway.
1880 AC_MSG_RESULT(newly built gas)
1882 _gcc_COMPUTE_GAS_VERSION
1883 in_tree_gas_is_elf=no
1884 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1885 || (grep 'obj_format = multi' ../gas/Makefile \
1886 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1888 in_tree_gas_is_elf=yes
1891 AC_MSG_RESULT($gcc_cv_as)
1895 # Identify the linker which will work hand-in-glove with the newly
1896 # built GCC, so that we can examine its features. This is the linker
1897 # which will be driven by the driver program.
1899 # If build != host, and we aren't building gas in-tree, we identify a
1900 # build->target linker and hope that it will have the same features
1901 # as the host->target linker we'll be using.
1902 gcc_cv_gld_major_version=
1903 gcc_cv_gld_minor_version=
1904 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1905 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1907 AS_VAR_SET_IF(gcc_cv_ld,, [
1908 if test -x "$DEFAULT_LINKER"; then
1909 gcc_cv_ld="$DEFAULT_LINKER"
1910 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1911 && test -f ../ld/Makefile \
1912 && test x$build = x$host; then
1913 gcc_cv_ld=../ld/ld-new$build_exeext
1914 elif test -x collect-ld$build_exeext; then
1915 # Build using linker in the current directory.
1916 gcc_cv_ld=./collect-ld$build_exeext
1917 elif test -x $LD_FOR_TARGET; then
1918 gcc_cv_ld="$LD_FOR_TARGET"
1920 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1923 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1924 PLUGIN_LD=`basename $gcc_cv_ld`
1925 AC_ARG_WITH(plugin-ld,
1926 [ --with-plugin-ld=[[ARG]] specify the plugin linker],
1927 [if test x"$withval" != x; then
1928 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1929 PLUGIN_LD="$withval"
1931 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1932 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1934 # Check to see if we are using gold instead of ld
1935 AC_MSG_CHECKING(whether we are using gold)
1937 if test x$gcc_cv_ld != x; then
1938 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
1939 | grep "GNU gold" > /dev/null; then
1943 AC_MSG_RESULT($ld_is_gold)
1945 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1946 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1947 case "$ORIGINAL_LD_FOR_TARGET" in
1948 ./collect-ld | ./collect-ld$build_exeext) ;;
1949 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1952 AC_MSG_CHECKING(what linker to use)
1953 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1954 # Single tree build which includes ld. We want to prefer it
1955 # over whatever linker top-level may have detected, since
1956 # we'll use what we're building after installation anyway.
1957 AC_MSG_RESULT(newly built ld)
1959 in_tree_ld_is_elf=no
1960 if (grep 'EMUL = .*elf' ../ld/Makefile \
1961 || grep 'EMUL = .*linux' ../ld/Makefile \
1962 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1963 in_tree_ld_is_elf=yes
1965 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
1968 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1969 if test x$gcc_cv_gld_version != x; then
1973 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1974 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1977 AC_MSG_RESULT($gcc_cv_ld)
1981 # Figure out what nm we will be using.
1982 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1983 AS_VAR_SET_IF(gcc_cv_nm,, [
1984 if test -f $gcc_cv_binutils_srcdir/configure.in \
1985 && test -f ../binutils/Makefile \
1986 && test x$build = x$host; then
1987 gcc_cv_nm=../binutils/nm-new$build_exeext
1988 elif test -x nm$build_exeext; then
1989 gcc_cv_nm=./nm$build_exeext
1990 elif test -x $NM_FOR_TARGET; then
1991 gcc_cv_nm="$NM_FOR_TARGET"
1993 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1996 AC_MSG_CHECKING(what nm to use)
1997 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1998 # Single tree build which includes binutils.
1999 AC_MSG_RESULT(newly built nm)
2002 AC_MSG_RESULT($gcc_cv_nm)
2006 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2007 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2008 case "$ORIGINAL_NM_FOR_TARGET" in
2009 ./nm | ./nm$build_exeext) ;;
2010 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2014 # Figure out what objdump we will be using.
2015 AS_VAR_SET_IF(gcc_cv_objdump,, [
2016 if test -f $gcc_cv_binutils_srcdir/configure.in \
2017 && test -f ../binutils/Makefile \
2018 && test x$build = x$host; then
2019 # Single tree build which includes binutils.
2020 gcc_cv_objdump=../binutils/objdump$build_exeext
2021 elif test -x objdump$build_exeext; then
2022 gcc_cv_objdump=./objdump$build_exeext
2023 elif test -x $OBJDUMP_FOR_TARGET; then
2024 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2026 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2029 AC_MSG_CHECKING(what objdump to use)
2030 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2031 # Single tree build which includes binutils.
2032 AC_MSG_RESULT(newly built objdump)
2033 elif test x$gcc_cv_objdump = x; then
2034 AC_MSG_RESULT(not found)
2036 AC_MSG_RESULT($gcc_cv_objdump)
2039 # Figure out what readelf we will be using.
2040 AS_VAR_SET_IF(gcc_cv_readelf,, [
2041 if test -f $gcc_cv_binutils_srcdir/configure.in \
2042 && test -f ../binutils/Makefile \
2043 && test x$build = x$host; then
2044 # Single tree build which includes binutils.
2045 gcc_cv_readelf=../binutils/readelf$build_exeext
2046 elif test -x readelf$build_exeext; then
2047 gcc_cv_readelf=./readelf$build_exeext
2049 AC_PATH_PROG(gcc_cv_readelf, readelf)
2052 AC_MSG_CHECKING(what readelf to use)
2053 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2054 # Single tree build which includes binutils.
2055 AC_MSG_RESULT(newly built readelf)
2056 elif test x$gcc_cv_readelf = x; then
2057 AC_MSG_RESULT(not found)
2059 AC_MSG_RESULT($gcc_cv_readelf)
2062 # Figure out what assembler alignment features are present.
2063 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2067 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2068 [Define if your assembler supports .balign and .p2align.])])
2070 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2073 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2074 [Define if your assembler supports specifying the maximum number
2075 of bytes to skip when using the GAS .p2align command.])])
2077 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2080 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2081 [Define if your assembler supports .literal16.])])
2083 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2085 [conftest_label1: .word 0
2087 conftest_label2: .word 0
2089 [if test x$gcc_cv_nm != x; then
2090 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2091 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2092 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2094 else gcc_cv_as_subsection_m1=yes
2096 rm -f conftest.nm1 conftest.nm2
2098 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2099 [Define if your assembler supports .subsection and .subsection -1 starts
2100 emitting at the beginning of your section.])])
2102 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2105 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2107 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2109 [ .weakref foobar, barfnot],,
2110 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2112 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2115 .NSUBSPA $CODE$,COMDAT],,
2116 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2118 # .hidden needs to be supported in both the assembler and the linker,
2119 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2120 # This is irritatingly difficult to feature test for; we have to check the
2121 # date string after the version number. If we've got an in-tree
2122 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2124 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2125 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2129 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2130 # STV_HIDDEN, so disable .hidden support if so.
2133 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2134 cat > conftest.s <<EOF
2141 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2142 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2143 grep '\.hidden default' > /dev/null; then
2146 gcc_cv_as_hidden=yes
2149 # Assume bug is present if objdump is missing.
2154 gcc_cv_as_hidden=yes
2159 if test $in_tree_ld != yes ; then
2160 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2161 if test x"$ld_is_gold" = xyes; then
2162 gcc_cv_ld_hidden=yes
2163 elif echo "$ld_ver" | grep GNU > /dev/null; then
2164 ld_vers=`echo $ld_ver | sed -n \
2165 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2166 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2167 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2168 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2169 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2174 # Solaris 2 ld -V output looks like this for a regular version:
2176 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2178 # but test versions add stuff at the end:
2180 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2182 ld_ver=`$gcc_cv_ld -V 2>&1`
2183 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2184 ld_vers=`echo $ld_ver | sed -n \
2185 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2186 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2187 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2195 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2196 [[if test $in_tree_ld = yes ; then
2198 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2199 && test $in_tree_ld_is_elf = yes; then
2200 gcc_cv_ld_hidden=yes
2203 gcc_cv_ld_hidden=yes
2204 if echo "$ld_ver" | grep GNU > /dev/null; then
2205 if test 0"$ld_date" -lt 20020404; then
2206 if test -n "$ld_date"; then
2207 # If there was date string, but was earlier than 2002-04-04, fail
2209 elif test -z "$ld_vers"; then
2210 # If there was no date string nor ld version number, something is wrong
2213 test -z "$ld_vers_patch" && ld_vers_patch=0
2214 if test "$ld_vers_major" -lt 2; then
2216 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2217 gcc_cv_ld_hidden="no"
2218 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2225 hppa64*-*-hpux* | ia64*-*-hpux*)
2226 gcc_cv_ld_hidden=yes
2228 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2229 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2230 # .symbolic was only added in Solaris 9 12/02.
2231 gcc_cv_ld_hidden=yes
2239 libgcc_visibility=no
2240 AC_SUBST(libgcc_visibility)
2241 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2242 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2243 libgcc_visibility=yes
2244 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2245 [Define if your assembler and linker support .hidden.])
2248 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2249 gcc_cv_ld_ro_rw_mix=unknown
2250 if test $in_tree_ld = yes ; then
2251 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2252 && test $in_tree_ld_is_elf = yes; then
2253 gcc_cv_ld_ro_rw_mix=read-write
2255 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2256 echo '.section myfoosect, "a"' > conftest1.s
2257 echo '.section myfoosect, "aw"' > conftest2.s
2258 echo '.byte 1' >> conftest2.s
2259 echo '.section myfoosect, "a"' > conftest3.s
2260 echo '.byte 0' >> conftest3.s
2261 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2262 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2263 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2264 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2265 conftest2.o conftest3.o > /dev/null 2>&1; then
2266 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2267 | sed -e '/myfoosect/!d' -e N`
2268 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2269 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2270 gcc_cv_ld_ro_rw_mix=read-only
2272 gcc_cv_ld_ro_rw_mix=read-write
2277 rm -f conftest.* conftest[123].*
2280 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2281 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2282 [Define if your linker links a mix of read-only
2283 and read-write sections into a read-write section.])
2285 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2287 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2288 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2296 [[# GAS versions before 2.11 do not support uleb128,
2297 # despite appearing to.
2298 # ??? There exists an elf-specific test that will crash
2299 # the assembler. Perhaps it's better to figure out whether
2300 # arbitrary sections are supported and try the test.
2301 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2302 if echo "$as_ver" | grep GNU > /dev/null; then
2303 as_vers=`echo $as_ver | sed -n \
2304 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2305 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2306 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2307 if test $as_major -eq 2 && test $as_minor -lt 11
2309 else gcc_cv_as_leb128=yes
2312 [AC_DEFINE(HAVE_AS_LEB128, 1,
2313 [Define if your assembler supports .sleb128 and .uleb128.])])
2315 # Check if we have assembler support for unwind directives.
2316 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2323 .cfi_escape 1, 2, 3, 4, 5
2327 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2328 # read-only and read-write sections, we need to make sure that the
2329 # assembler used emits read-write .eh_frame sections.
2330 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2331 if test "x$gcc_cv_objdump" != x; then
2332 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2333 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2334 gcc_cv_as_cfi_directive=no
2337 i?86-*-solaris2.1[[0-9]]*)
2338 # On Solaris/x86, make sure that GCC and gas agree on using
2339 # read-only .eh_frame sections for 64-bit.
2340 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2341 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2342 sed -e /.eh_frame/!d -e N | \
2343 grep READONLY > /dev/null; then
2344 gcc_cv_as_cfi_directive=yes
2346 gcc_cv_as_cfi_directive=no
2350 gcc_cv_as_cfi_directive=yes
2355 # no objdump, err on the side of caution
2356 gcc_cv_as_cfi_directive=no
2359 gcc_cv_as_cfi_directive=yes
2363 gcc_cv_as_cfi_directive=yes
2366 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2367 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2371 .cfi_adjust_cfa_offset 64
2373 .cfi_adjust_cfa_offset 128
2376 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2377 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2378 gcc_cv_as_cfi_advance_working=yes
2382 # no objdump, err on the side of caution
2383 gcc_cv_as_cfi_advance_working=no
2385 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2386 [`if test $gcc_cv_as_cfi_directive = yes \
2387 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2388 [Define 0/1 if your assembler supports CFI directives.])
2390 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2391 gcc_cv_as_cfi_personality_directive, ,,
2394 .cfi_personality 0, symbol
2396 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2397 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2398 then echo 1; else echo 0; fi`],
2399 [Define 0/1 if your assembler supports .cfi_personality.])
2401 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2402 gcc_cv_as_cfi_sections_directive, ,,
2404 .cfi_sections .debug_frame, .eh_frame
2408 win32 | pe | cygwin* | mingw32* | uwin*)
2409 # Need to check that we generated the correct relocation for the
2410 # .debug_frame section. This was fixed for binutils 2.21.
2411 gcc_cv_as_cfi_sections_directive=no
2412 if test "x$gcc_cv_objdump" != x; then
2413 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2414 grep secrel > /dev/null; then
2415 gcc_cv_as_cfi_sections_directive=yes
2420 gcc_cv_as_cfi_sections_directive=yes
2423 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2424 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2425 then echo 1; else echo 0; fi`],
2426 [Define 0/1 if your assembler supports .cfi_sections.])
2428 # GAS versions up to and including 2.11.0 may mis-optimize
2430 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2438 .section .eh_frame,"aw",@progbits
2440 .4byte .LECIE1-.LSCIE1
2454 .4byte .LEFDE1-.LASFDE1
2456 .4byte .LASFDE1-__FRAME_BEGIN__
2464 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2465 cat > conftest.lit <<EOF
2466 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2467 0010 01000000 12000000 18000000 00000000 ................
2468 0020 08000000 04080000 0044 .........D @&t@
2470 cat > conftest.big <<EOF
2471 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2472 0010 00000001 00000012 00000018 00000000 ................
2473 0020 00000008 04000000 0844 .........D @&t@
2475 # If the assembler didn't choke, and we can objdump,
2476 # and we got the correct data, then succeed.
2477 # The text in the here-document typically retains its unix-style line
2478 # endings, while the output of objdump will use host line endings.
2479 # Therefore, use diff -b for the comparisons.
2480 if test x$gcc_cv_objdump != x \
2481 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2482 | tail -3 > conftest.got \
2483 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2484 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2486 gcc_cv_as_eh_frame=yes
2487 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2488 gcc_cv_as_eh_frame=buggy
2490 # Uh oh, what do we do now?
2491 gcc_cv_as_eh_frame=no
2494 if test $gcc_cv_as_eh_frame = buggy; then
2495 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2496 [Define if your assembler mis-optimizes .eh_frame data.])
2499 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2500 [elf,2,12,0], [--fatal-warnings],
2501 [.section .rodata.str, "aMS", @progbits, 1])
2502 if test $gcc_cv_as_shf_merge = no; then
2503 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2504 [elf,2,12,0], [--fatal-warnings],
2505 [.section .rodata.str, "aMS", %progbits, 1])
2507 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2508 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2509 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2511 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2512 [elf,2,16,0], [--fatal-warnings],
2513 [.section .text,"axG",@progbits,.foo,comdat])
2514 if test $gcc_cv_as_comdat_group = yes; then
2515 gcc_cv_as_comdat_group_percent=no
2517 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2518 [elf,2,16,0], [--fatal-warnings],
2519 [.section .text,"axG",%progbits,.foo,comdat])
2521 if test x"$ld_is_gold" = xyes; then
2523 elif test $in_tree_ld = yes ; then
2525 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2526 && test $in_tree_ld_is_elf = yes; then
2529 elif echo "$ld_ver" | grep GNU > /dev/null; then
2531 if test 0"$ld_date" -lt 20050308; then
2532 if test -n "$ld_date"; then
2533 # If there was date string, but was earlier than 2005-03-08, fail
2535 elif test "$ld_vers_major" -lt 2; then
2537 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2544 *-*-solaris2.1[1-9]*)
2545 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2546 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2549 # FIXME: Maybe need to refine later when COMDAT group support with
2550 # Sun as is implemented.
2551 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 1688; then
2558 # Assume linkers other than GNU ld don't support COMDAT group.
2564 # Allow overriding the automatic COMDAT group tests above.
2565 AC_ARG_ENABLE(comdat,
2566 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2567 [comdat_group="$enable_comdat"])
2568 if test $comdat_group = no; then
2569 gcc_cv_as_comdat_group=no
2570 gcc_cv_as_comdat_group_percent=no
2572 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2573 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2574 [Define 0/1 if your assembler and linker support COMDAT groups.])
2576 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2577 gcc_cv_as_discriminator,
2581 .loc 1 1 0 discriminator 1],,
2582 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2583 [Define if your assembler supports the .loc discriminator sub-directive.])])
2585 # Thread-local storage - the check is heavily parameterized.
2594 .section ".tdata","awT",@progbits
2597 ldq $27,__tls_get_addr($29) !literal!1
2598 lda $16,foo($29) !tlsgd!1
2599 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2600 ldq $27,__tls_get_addr($29) !literal!2
2601 lda $16,foo($29) !tlsldm!2
2602 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2603 ldq $1,foo($29) !gotdtprel
2604 ldah $2,foo($29) !dtprelhi
2605 lda $3,foo($2) !dtprello
2606 lda $4,foo($29) !dtprel
2607 ldq $1,foo($29) !gottprel
2608 ldah $2,foo($29) !tprelhi
2609 lda $3,foo($2) !tprello
2610 lda $4,foo($29) !tprel'
2613 tls_as_opt=--fatal-warnings
2615 cris-*-*|crisv32-*-*)
2617 .section ".tdata","awT",@progbits
2624 tls_as_opt=--fatal-warnings
2628 .section ".tdata","awT",@progbits
2640 .section ".tdata","awT",@progbits
2644 addil LT%foo-$tls_gdidx$,gp
2645 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2648 addil LT%foo-$tls_ldidx$,gp
2650 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2651 addil LR%foo-$tls_dtpoff$,%ret0
2652 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2654 addil LT%foo-$tls_ieoff$,gp
2655 ldw RT%foo-$tls_ieoff$(%r1),%t2
2658 addil LR%foo-$tls_leoff$,%t1
2659 ldo RR%foo-$tls_leoff$(%r1),%t2'
2662 tls_as_opt=--fatal-warnings
2666 .section ".tdata","awT",%progbits
2679 i[34567]86-*-solaris2.*)
2681 tga_func=___tls_get_addr
2687 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2689 .section .tdata,"awt",@progbits'
2693 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2694 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2698 .section ".tdata","awT",@progbits'
2701 tls_as_opt="--fatal-warnings"
2703 conftest_s="$conftest_s
2707 leal foo@tlsgd(,%ebx,1), %eax
2708 leal foo@tlsldm(%ebx), %eax
2709 leal foo@dtpoff(%eax), %edx
2710 movl foo@gottpoff(%ebx), %eax
2711 subl foo@gottpoff(%ebx), %eax
2712 addl foo@gotntpoff(%ebx), %eax
2713 movl foo@indntpoff, %eax
2714 movl \$foo@tpoff, %eax
2715 subl \$foo@tpoff, %eax
2716 leal foo@ntpoff(%ecx), %eax"
2720 .section ".tdata","awT",@progbits
2724 leaq foo@TLSGD(%rip), %rdi
2725 leaq foo@TLSLD(%rip), %rdi
2726 leaq foo@DTPOFF(%rax), %rdx
2727 movq foo@GOTTPOFF(%rip), %rax
2728 movq $foo@TPOFF, %rax'
2731 tls_as_opt=--fatal-warnings
2735 .section ".tdata","awT",@progbits
2738 addl r16 = @ltoff(@dtpmod(foo#)), gp
2739 addl r17 = @ltoff(@dtprel(foo#)), gp
2740 addl r18 = @ltoff(@tprel(foo#)), gp
2741 addl r19 = @dtprel(foo#), gp
2742 adds r21 = @dtprel(foo#), r13
2743 movl r23 = @dtprel(foo#)
2744 addl r20 = @tprel(foo#), gp
2745 adds r22 = @tprel(foo#), r13
2746 movl r24 = @tprel(foo#)'
2749 tls_as_opt=--fatal-warnings
2753 .section .tdata,"awT",@progbits
2757 addiu $4, $28, %tlsgd(x)
2758 addiu $4, $28, %tlsldm(x)
2759 lui $4, %dtprel_hi(x)
2760 addiu $4, $4, %dtprel_lo(x)
2761 lw $4, %gottprel(x)($28)
2762 lui $4, %tprel_hi(x)
2763 addiu $4, $4, %tprel_lo(x)'
2766 tls_as_opt='-32 --fatal-warnings'
2770 .section .tdata,"awT",@progbits
2775 move.l x@TLSGD(%a5),%a0
2776 move.l x@TLSLDM(%a5),%a0
2777 move.l x@TLSLDO(%a5),%a0
2778 move.l x@TLSIE(%a5),%a0
2779 move.l x@TLSLE(%a5),%a0'
2782 tls_as_opt='--fatal-warnings'
2786 .section ".tdata","awT",@progbits
2794 addi 3,31,ld0@got@tlsgd
2796 addi 3,31,x1@got@tlsld
2799 addis 9,3,x2@dtprel@ha
2800 addi 9,9,x2@dtprel@l
2801 lwz 9,x3@got@tprel(31)
2804 addis 9,2,x2@tprel@ha
2805 addi 9,9,x2@tprel@l'
2808 tls_as_opt="-a32 --fatal-warnings"
2812 .section ".tdata","awT",@progbits
2820 addi 3,2,ld0@got@tlsgd
2826 addi 3,2,x1@got@tlsld
2832 addis 9,3,x2@dtprel@ha
2833 addi 9,9,x2@dtprel@l
2836 ld 9,x3@got@dtprel(2)
2842 tls_as_opt="-a64 --fatal-warnings"
2846 .section ".tdata","awT",@progbits
2855 l %r1,foo@GOTNTPOFF(%r12)
2856 l %r1,0(%r1):tls_load:foo
2857 bas %r14,0(%r1,%r13):tls_gdcall:foo
2858 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2861 tls_as_opt="-m31 --fatal-warnings"
2865 .section ".tdata","awT",@progbits
2873 lg %r1,foo@GOTNTPOFF(%r12)
2874 larl %r1,foo@INDNTPOFF
2875 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2876 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2879 tls_as_opt="-m64 -Aesame --fatal-warnings"
2881 sh-*-* | sh[34]-*-*)
2883 .section ".tdata","awT",@progbits
2893 tls_as_opt=--fatal-warnings
2897 sparc*-sun-solaris2.*)
2899 tga_func=__tls_get_addr
2905 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2907 .section ".tdata",#alloc,#write,#tls'
2912 .section ".tdata","awT",@progbits'
2915 tls_as_opt="-32 --fatal-warnings"
2917 conftest_s="$conftest_s
2920 sethi %tgd_hi22(foo), %o0
2921 add %o0, %tgd_lo10(foo), %o1
2922 add %l7, %o1, %o0, %tgd_add(foo)
2923 call __tls_get_addr, %tgd_call(foo)
2924 sethi %tldm_hi22(foo), %l1
2925 add %l1, %tldm_lo10(foo), %l2
2926 add %l7, %l2, %o0, %tldm_add(foo)
2927 call __tls_get_addr, %tldm_call(foo)
2928 sethi %tldo_hix22(foo), %l3
2929 xor %l3, %tldo_lox10(foo), %l4
2930 add %o0, %l4, %l5, %tldo_add(foo)
2931 sethi %tie_hi22(foo), %o3
2932 add %o3, %tie_lo10(foo), %o3
2933 ld [%l7 + %o3], %o2, %tie_ld(foo)
2934 add %g7, %o2, %o4, %tie_add(foo)
2935 sethi %tle_hix22(foo), %l1
2936 xor %l1, %tle_lox10(foo), %o5
2937 ld [%g7 + %o5], %o1"
2941 .section ".tdata","awT",@progbits
2944 movi a8, foo@TLSFUNC
2945 movi a10, foo@TLSARG
2946 callx8.tls a8, foo@TLSCALL'
2953 if test "x$enable_tls" = xno ; then
2954 : # TLS explicitly disabled.
2955 elif test "x$enable_tls" = xyes ; then
2956 set_have_as_tls=yes # TLS explicitly enabled.
2957 elif test -z "$tls_first_major"; then
2958 : # If we don't have a check, assume no support.
2960 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2961 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2962 [set_have_as_tls=yes])
2965 # TLS was introduced in the Solaris 9 FCS release and backported to
2966 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
2967 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
2968 # ld and GCC don't support any longer.
2970 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
2972 # Check ld and ld.so.1 TLS support.
2973 if echo "$ld_ver" | grep GNU > /dev/null; then
2974 # Assume all interesting versions of GNU ld have TLS support.
2975 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
2979 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
2981 min_tls_ld_vers_minor=280
2983 # Solaris 8/SPARC ld has TLS support since version 1.272.
2984 sparc*-*-solaris2.8)
2985 min_tls_ld_vers_minor=272
2987 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
2989 min_tls_ld_vers_minor=374
2991 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
2992 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
2993 min_tls_ld_vers_minor=343
2996 if test "$ls_vers_major" -gt 1 || \
2997 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3003 AC_MSG_RESULT($ld_tls_support)
3006 save_LDFLAGS="$LDFLAGS"
3010 AC_MSG_CHECKING(alternate thread library)
3012 # TLS support was backported to Solaris 8 patches, but only lives in
3013 # the alternate thread library which became the default in Solaris 9.
3014 # We want to always use that, irrespective of TLS support.
3016 # Take multilib subdir into account. There's no spec to handle
3017 # this. The 64 symlink exists since Solaris 8.
3018 lwp_dir=/usr/lib/lwp
3019 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3020 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3027 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3028 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3029 [Define to the linker flags to use for -pthread.])
3030 AC_MSG_RESULT($lwp_dir)
3032 AC_MSG_CHECKING(library containing $tga_func)
3033 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3034 # (32-bit x86) only lived in libthread, so check for that. Keep
3035 # set_have_as_tls if found, disable if not.
3036 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3037 # Clear LIBS if we cannot support TLS.
3038 if test $set_have_as_tls = no; then
3041 # Always define LIB_TLS_SPEC, even without TLS support.
3042 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3043 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3044 AC_MSG_RESULT($LIBS)
3047 LDFLAGS="$save_LDFLAGS"
3050 if test $set_have_as_tls = yes ; then
3051 AC_DEFINE(HAVE_AS_TLS, 1,
3052 [Define if your assembler and linker support thread-local storage.])
3055 # Target-specific assembler checks.
3057 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3058 gcc_cv_ld_static_dynamic=no
3059 if test $in_tree_ld = yes ; then
3060 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3061 gcc_cv_ld_static_dynamic=yes
3063 elif test x$gcc_cv_ld != x; then
3064 # Check if linker supports -Bstatic/-Bdynamic option
3065 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3066 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3067 gcc_cv_ld_static_dynamic=yes
3070 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3071 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3072 [Define if your linker supports -Bstatic/-Bdynamic option.])
3074 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3076 if test x"$demangler_in_ld" = xyes; then
3077 AC_MSG_CHECKING(linker --demangle support)
3078 gcc_cv_ld_demangle=no
3079 if test $in_tree_ld = yes; then
3080 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3081 gcc_cv_ld_demangle=yes
3083 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3084 # Check if the GNU linker supports --demangle option
3085 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3086 gcc_cv_ld_demangle=yes
3089 if test x"$gcc_cv_ld_demangle" = xyes; then
3090 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3091 [Define if your linker supports --demangle option.])
3093 AC_MSG_RESULT($gcc_cv_ld_demangle)
3097 # All TARGET_ABI_OSF targets.
3098 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3099 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3100 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3103 extbl $3, $2, $3 !lituse_bytoff!1
3104 ldq $2, a($29) !literal!1
3105 ldq $4, b($29) !literal!2
3106 ldq_u $3, 0($2) !lituse_base!1
3107 ldq $27, f($29) !literal!5
3108 jsr $26, ($27), f !lituse_jsr!5
3109 ldah $29, 0($26) !gpdisp!3
3110 lda $0, c($29) !gprel
3111 ldah $1, d($29) !gprelhigh
3112 lda $1, d($1) !gprellow
3113 lda $29, 0($29) !gpdisp!3],,
3114 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3115 [Define if your assembler supports explicit relocations.])])
3116 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3117 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3120 ldq $27, a($29) !literal!1
3121 jsr $26, ($27), a !lituse_jsrdirect!1],,
3122 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3123 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3127 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3128 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3129 [-no-mul-bug-abort], [.text],,
3130 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3131 [Define if your assembler supports the -no-mul-bug-abort option.])])
3135 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3136 [.register %g2, #scratch],,
3137 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3138 [Define if your assembler supports .register.])])
3140 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3142 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3143 [Define if your assembler supports -relax option.])])
3145 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3146 gcc_cv_as_sparc_gotdata_op,,
3152 sethi %gdop_hix22(foo), %g1
3153 xor %g1, %gdop_lox10(foo), %g1
3154 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3155 [if test x$gcc_cv_ld != x \
3156 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3157 if $gcc_cv_ld -v | grep GNU >/dev/null 2>&1; then
3158 if test x$gcc_cv_objdump != x; then
3159 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3160 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3161 gcc_cv_as_sparc_gotdata_op=no
3163 gcc_cv_as_sparc_gotdata_op=yes
3167 gcc_cv_as_sparc_gotdata_op=yes
3171 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3172 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3174 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3175 gcc_cv_as_sparc_ua_pcrel,,
3183 .uaword %r_disp32(foo)],
3184 [if test x$gcc_cv_ld != x \
3185 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3186 gcc_cv_as_sparc_ua_pcrel=yes
3189 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3190 [Define if your assembler and linker support unaligned PC relative relocs.])
3192 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3193 gcc_cv_as_sparc_ua_pcrel_hidden,,
3198 .uaword %r_disp32(foo)
3199 .byte 0x32, 0x33, 0x34
3204 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3205 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3206 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3207 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3208 if $gcc_cv_objdump -R conftest 2> /dev/null \
3209 | grep 'DISP32' > /dev/null 2>&1; then
3212 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3216 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3217 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3218 ]) # unaligned pcrel relocs
3220 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3221 gcc_cv_as_sparc_offsetable_lo10,,
3224 or %g1, %lo(ab) + 12, %g1
3225 or %g1, %lo(ab + 12), %g1],
3226 [if test x$gcc_cv_objdump != x \
3227 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3228 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3229 gcc_cv_as_sparc_offsetable_lo10=yes
3231 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3232 [Define if your assembler supports offsetable %lo().])])
3236 i[34567]86-*-* | x86_64-*-*)
3240 # Full C++ conformance when using a shared libstdc++-v3 requires some
3241 # support from the Cygwin DLL, which in more recent versions exports
3242 # wrappers to aid in interposing and redirecting operators new, delete,
3243 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3244 # are configuring for a version of Cygwin that exports the wrappers.
3245 if test x$host = x$target; then
3246 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3248 # Can't check presence of libc functions during cross-compile, so
3249 # we just have to assume we're building for an up-to-date target.
3250 gcc_ac_cygwin_dll_wrappers=yes
3252 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3253 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3254 [Define if you want to generate code by default that assumes that the
3255 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3258 cygwin* | pe | mingw32*)
3259 # Recent binutils allows the three-operand form of ".comm" on PE. This
3260 # definition is used unconditionally to initialise the default state of
3261 # the target option variable that governs usage of the feature.
3262 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3263 [2,19,52],,[.comm foo,1,32])
3264 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3265 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3266 [Define if your assembler supports specifying the alignment
3267 of objects allocated using the GAS .comm command.])
3268 # Used for DWARF 2 in PE
3269 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3270 gcc_cv_as_ix86_pe_secrel32,
3276 [if test x$gcc_cv_ld != x \
3277 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3278 gcc_cv_as_ix86_pe_secrel32=yes
3281 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3282 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3283 # Test if the assembler supports the extended form of the .section
3284 # directive that specifies section alignment. LTO support uses this,
3285 # but normally only after installation, so we warn but don't fail the
3286 # configure if LTO is enabled but the assembler does not support it.
3287 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3288 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3289 if test x$gcc_cv_as_section_has_align != xyes; then
3290 case ",$enable_languages," in
3292 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3299 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3300 gcc_cv_as_ix86_filds,,,
3301 [filds mem; fists mem],,
3302 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3303 [Define if your assembler uses filds and fists mnemonics.])])
3305 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3306 gcc_cv_as_ix86_fildq,,,
3307 [fildq mem; fistpq mem],,
3308 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3309 [Define if your assembler uses fildq and fistq mnemonics.])])
3311 gcc_GAS_CHECK_FEATURE([cmov syntax],
3312 gcc_cv_as_ix86_cmov_sun_syntax,,,
3313 [cmovl.l %edx, %eax],,
3314 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3315 [Define if your assembler supports the Sun syntax for cmov.])])
3317 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3318 gcc_cv_as_ix86_ffreep,,,
3320 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3321 [Define if your assembler supports the ffreep mnemonic.])])
3323 gcc_GAS_CHECK_FEATURE([.quad directive],
3324 gcc_cv_as_ix86_quad,,,
3326 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3327 [Define if your assembler supports the .quad directive.])])
3329 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3330 gcc_cv_as_ix86_sahf,,,
3333 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3334 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3336 gcc_GAS_CHECK_FEATURE([swap suffix],
3337 gcc_cv_as_ix86_swap,,,
3338 [movl.s %esp, %ebp],,
3339 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3340 [Define if your assembler supports the swap suffix.])])
3342 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3343 gcc_cv_as_ix86_diff_sect_delta,,,
3351 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3352 [Define if your assembler supports the subtraction of symbols in different sections.])])
3354 # These two are used unconditionally by i386.[ch]; it is to be defined
3355 # to 1 if the feature is present, 0 otherwise.
3356 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3357 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3363 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3364 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3365 [Define true if the assembler supports '.long foo@GOTOFF'.])
3367 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3368 gcc_cv_as_ix86_rep_lock_prefix,,,
3370 lock addl %edi, (%eax,%esi)
3371 lock orl $0, (%esp)],,
3372 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3373 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3378 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3379 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3381 addl r15 = @ltoffx(x#), gp
3383 ld8.mov r16 = [[r15]], x#],,
3384 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3385 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3391 *-*-aix*) conftest_s=' .machine "pwr5"
3395 gcc_GAS_CHECK_FEATURE([.machine directive support],
3396 gcc_cv_as_machine_directive,,,
3397 [ .machine ppc7400])
3398 if test x$gcc_cv_as_machine_directive != xyes; then
3399 echo "*** This target requires an assembler supporting \".machine\"" >&2
3400 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3401 test x$build = x$target && exit 1
3405 *) conftest_s=' .machine power4
3410 gcc_GAS_CHECK_FEATURE([mfcr field support],
3411 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3413 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3414 [Define if your assembler supports mfcr field.])])
3417 *-*-aix*) conftest_s=' .machine "pwr5"
3420 *) conftest_s=' .machine power5
3425 gcc_GAS_CHECK_FEATURE([popcntb support],
3426 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3428 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3429 [Define if your assembler supports popcntb field.])])
3432 *-*-aix*) conftest_s=' .machine "pwr5x"
3435 *) conftest_s=' .machine power5
3440 gcc_GAS_CHECK_FEATURE([fp round support],
3441 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3443 [AC_DEFINE(HAVE_AS_FPRND, 1,
3444 [Define if your assembler supports fprnd.])])
3447 *-*-aix*) conftest_s=' .machine "pwr6"
3450 *) conftest_s=' .machine power6
3455 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3456 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3458 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3459 [Define if your assembler supports mffgpr and mftgpr.])])
3462 *-*-aix*) conftest_s=' .csect .text[[PR]]
3464 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3468 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3469 *) conftest_s=' .text
3471 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3474 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3475 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3477 [AC_DEFINE(HAVE_AS_REL16, 1,
3478 [Define if your assembler supports R_PPC_REL16 relocs.])])
3481 *-*-aix*) conftest_s=' .machine "pwr6"
3484 *) conftest_s=' .machine power6
3489 gcc_GAS_CHECK_FEATURE([compare bytes support],
3490 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3492 [AC_DEFINE(HAVE_AS_CMPB, 1,
3493 [Define if your assembler supports cmpb.])])
3496 *-*-aix*) conftest_s=' .machine "pwr6"
3499 *) conftest_s=' .machine power6
3504 gcc_GAS_CHECK_FEATURE([decimal float support],
3505 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3507 [AC_DEFINE(HAVE_AS_DFP, 1,
3508 [Define if your assembler supports DFP instructions.])])
3511 *-*-aix*) conftest_s=' .machine "pwr7"
3514 *) conftest_s=' .machine power7
3519 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3520 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3522 [AC_DEFINE(HAVE_AS_VSX, 1,
3523 [Define if your assembler supports VSX instructions.])])
3526 *-*-aix*) conftest_s=' .machine "pwr7"
3529 *) conftest_s=' .machine power7
3534 gcc_GAS_CHECK_FEATURE([popcntd support],
3535 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3537 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3538 [Define if your assembler supports POPCNTD instructions.])])
3541 *-*-aix*) conftest_s=' .csect .text[[PR]]
3543 *) conftest_s=' .text
3547 gcc_GAS_CHECK_FEATURE([lwsync support],
3548 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3550 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3551 [Define if your assembler supports LWSYNC instructions.])])
3554 *-*-aix*) conftest_s=' .machine "476"
3557 *) conftest_s=' .machine "476"
3562 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3563 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3565 [AC_DEFINE(HAVE_AS_DCI, 1,
3566 [Define if your assembler supports the DCI/ICI instructions.])])
3568 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3569 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3570 [.gnu_attribute 4,1],,
3571 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3572 [Define if your assembler supports .gnu_attribute.])])
3574 gcc_GAS_CHECK_FEATURE([tls marker support],
3575 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3576 [ bl __tls_get_addr(x@tlsgd)],,
3577 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3578 [Define if your assembler supports arg info for __tls_get_addr.])])
3582 gcc_GAS_CHECK_FEATURE([.ref support],
3583 gcc_cv_as_aix_ref, [2.21.0],,
3584 [ .csect stuff[[rw]]
3590 [AC_DEFINE(HAVE_AS_REF, 1,
3591 [Define if your assembler supports .ref])])
3597 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3598 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3599 [ lw $4,%gp_rel(foo)($4)],,
3600 [if test x$target_cpu_default = x
3601 then target_cpu_default=MASK_EXPLICIT_RELOCS
3602 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3604 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3605 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3606 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3607 [Define if the assembler understands -mno-shared.])])
3609 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3610 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3611 [.gnu_attribute 4,1],,
3612 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3613 [Define if your assembler supports .gnu_attribute.])])
3615 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3616 gcc_cv_as_mips_dtprelword, [2,18,0],,
3617 [.section .tdata,"awT",@progbits
3621 .dtprelword x+0x8000],,
3622 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3623 [Define if your assembler supports .dtprelword.])])
3625 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3626 gcc_cv_as_ld_jalr_reloc=no
3627 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3628 if test $in_tree_ld = yes ; then
3629 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3630 && test $in_tree_ld_is_elf = yes; then
3631 gcc_cv_as_ld_jalr_reloc=yes
3633 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3634 echo ' .ent x' > conftest.s
3635 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3636 echo ' ld $25,%call16(y)($28)' >> conftest.s
3637 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3638 echo '1: jalr $25' >> conftest.s
3639 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3640 echo '1: jalr $25' >> conftest.s
3641 echo ' .end x' >> conftest.s
3642 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3643 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3644 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3645 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3646 gcc_cv_as_ld_jalr_reloc=yes
3652 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3653 if test x$target_cpu_default = x; then
3654 target_cpu_default=MASK_RELAX_PIC_CALLS
3656 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3659 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3661 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3662 [gcc_cv_ld_mips_personality_relaxation],
3663 [gcc_cv_ld_mips_personality_relaxation=no
3664 if test $in_tree_ld = yes ; then
3665 if test "$gcc_cv_gld_major_version" -eq 2 \
3666 -a "$gcc_cv_gld_minor_version" -ge 21 \
3667 -o "$gcc_cv_gld_major_version" -gt 2; then
3668 gcc_cv_ld_mips_personality_relaxation=yes
3670 elif test x$gcc_cv_as != x \
3671 -a x$gcc_cv_ld != x \
3672 -a x$gcc_cv_readelf != x ; then
3673 cat > conftest.s <<EOF
3675 .cfi_personality 0x80,indirect_ptr
3682 .section .data,"aw",@progbits
3686 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3687 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3688 if $gcc_cv_readelf -d conftest 2>&1 \
3689 | grep TEXTREL > /dev/null 2>&1; then
3691 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3692 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3695 gcc_cv_ld_mips_personality_relaxation=yes
3699 rm -f conftest.s conftest.o conftest])
3700 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3701 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3702 [Define if your linker can relax absolute .eh_frame personality
3703 pointers into PC-relative form.])
3708 # Mips and HP-UX need the GNU assembler.
3709 # Linux on IA64 might be able to use the Intel assembler.
3712 mips*-*-* | *-*-hpux* )
3713 if test x$gas_flag = xyes \
3714 || test x"$host" != x"$build" \
3715 || test ! -x "$gcc_cv_as" \
3716 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3719 echo "*** This configuration requires the GNU assembler" >&2
3725 # ??? Not all targets support dwarf2 debug_line, even within a version
3726 # of gas. Moreover, we need to emit a valid instruction to trigger any
3727 # info to the output file. So, as supported targets are added to gas 2.11,
3728 # add some instruction here to (also) show we expect this might work.
3729 # ??? Once 2.11 is released, probably need to add first known working
3730 # version to the per-target configury.
3732 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3733 | x86_64*-*-* | hppa*-*-* | arm*-*-* \
3734 | xstormy16*-*-* | cris-*-* | crisv32-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \
3735 | spu-*-* | fido*-*-* | m32c-*-*)
3738 ia64*-*-* | s390*-*-*)
3745 if test x"$insn" != x; then
3747 .file 1 \"conftest.s\"
3750 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3751 gcc_cv_as_dwarf2_debug_line,
3752 [elf,2,11,0],, [$conftest_s],
3753 [if test x$gcc_cv_objdump != x \
3754 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3755 | grep debug_line > /dev/null 2>&1; then
3756 gcc_cv_as_dwarf2_debug_line=yes
3759 # The .debug_line file table must be in the exact order that
3760 # we specified the files, since these indices are also used
3761 # by DW_AT_decl_file. Approximate this test by testing if
3762 # the assembler bitches if the same index is assigned twice.
3763 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3764 gcc_cv_as_dwarf2_file_buggy,,,
3768 if test $gcc_cv_as_dwarf2_debug_line = yes \
3769 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3770 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3771 [Define if your assembler supports dwarf2 .file/.loc directives,
3772 and preserves file table indices exactly as given.])
3775 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3776 gcc_cv_as_gdwarf2_flag,
3777 [elf,2,11,0], [--gdwarf2], [$insn],,
3778 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3779 [Define if your assembler supports the --gdwarf2 option.])])
3781 gcc_GAS_CHECK_FEATURE([--gstabs option],
3782 gcc_cv_as_gstabs_flag,
3783 [elf,2,11,0], [--gstabs], [$insn],
3784 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3785 # and warns about it, but still exits successfully. So check for
3787 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3789 else gcc_cv_as_gstabs_flag=yes
3791 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3792 [Define if your assembler supports the --gstabs option.])])
3794 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3795 gcc_cv_as_debug_prefix_map_flag,
3796 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3797 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3798 [Define if your assembler supports the --debug-prefix-map option.])])
3801 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3804 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3805 [Define if your assembler supports .lcomm with an alignment field.])])
3807 AC_ARG_ENABLE(gnu-unique-object,
3808 [ --enable-gnu-unique-object enable the use of the @gnu_unique_object ELF extension on
3810 [case $enable_gnu_unique_object in
3812 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
3813 Valid choices are 'yes' and 'no'.]) ;;
3815 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
3817 [.type foo, @gnu_unique_object],,
3818 # Also check for ld.so support, i.e. glibc 2.11 or higher.
3819 [[if test x$host = x$build -a x$host = x$target &&
3820 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
3821 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
3822 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
3823 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
3824 if test "$glibcnum" -ge 2011 ; then
3825 enable_gnu_unique_object=yes
3828 if test x$enable_gnu_unique_object = xyes; then
3829 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
3830 [Define if your assembler supports @gnu_unique_object.])
3833 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3834 [gcc_cv_as_line_zero],
3835 [gcc_cv_as_line_zero=no
3836 if test $in_tree_gas = yes; then
3837 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3838 elif test "x$gcc_cv_as" != x; then
3839 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3840 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3841 test "x`cat conftest.out`" = x
3843 gcc_cv_as_line_zero=yes
3845 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3846 cat conftest.s >&AS_MESSAGE_LOG_FD
3847 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3848 cat conftest.out >&AS_MESSAGE_LOG_FD
3850 rm -f conftest.o conftest.s conftest.out
3852 if test "x$gcc_cv_as_line_zero" = xyes; then
3853 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3854 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3857 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3858 gcc_cv_ld_eh_frame_hdr=no
3859 if test $in_tree_ld = yes ; then
3860 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3861 && test $in_tree_ld_is_elf = yes; then
3862 gcc_cv_ld_eh_frame_hdr=yes
3864 elif test x$gcc_cv_ld != x; then
3865 # Check if linker supports --eh-frame-hdr option
3866 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3867 gcc_cv_ld_eh_frame_hdr=yes
3870 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3871 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3872 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3873 [Define if your linker supports --eh-frame-hdr option.])
3875 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3877 AC_MSG_CHECKING(linker position independent executable support)
3879 if test $in_tree_ld = yes ; then
3880 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3881 && test $in_tree_ld_is_elf = yes; then
3884 elif test x$gcc_cv_ld != x; then
3885 # Check if linker supports -pie option
3886 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3890 if test x"$gcc_cv_ld_pie" = xyes; then
3891 AC_DEFINE(HAVE_LD_PIE, 1,
3892 [Define if your linker supports -pie option.])
3894 AC_MSG_RESULT($gcc_cv_ld_pie)
3896 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3897 gcc_cv_ld_eh_gc_sections=no
3898 if test $in_tree_ld = yes ; then
3899 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3900 && test $in_tree_ld_is_elf = yes; then
3901 gcc_cv_ld_eh_gc_sections=yes
3903 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3904 cat > conftest.s <<EOF
3907 .type _start, @function
3910 .size _start, .-_start
3911 .section .text.foo,"ax",@progbits
3912 .type foo, @function
3916 .section .gcc_except_table.foo,"a",@progbits
3919 .section .eh_frame,"a",@progbits
3922 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3923 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3924 | grep "gc-sections option ignored" > /dev/null; then
3925 gcc_cv_ld_eh_gc_sections=no
3926 elif $gcc_cv_objdump -h conftest 2> /dev/null \
3927 | grep gcc_except_table > /dev/null; then
3928 gcc_cv_ld_eh_gc_sections=yes
3929 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3930 if test x$gcc_cv_as_comdat_group != xyes; then
3931 gcc_cv_ld_eh_gc_sections=no
3932 cat > conftest.s <<EOF
3935 .type _start, @function
3938 .size _start, .-_start
3939 .section .gnu.linkonce.t.foo,"ax",@progbits
3940 .type foo, @function
3944 .section .gcc_except_table.foo,"a",@progbits
3947 .section .eh_frame,"a",@progbits
3950 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3951 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3952 | grep "gc-sections option ignored" > /dev/null; then
3953 gcc_cv_ld_eh_gc_sections=no
3954 elif $gcc_cv_objdump -h conftest 2> /dev/null \
3955 | grep gcc_except_table > /dev/null; then
3956 gcc_cv_ld_eh_gc_sections=yes
3962 rm -f conftest.s conftest.o conftest
3966 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3967 gcc_cv_ld_eh_gc_sections=no
3970 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3971 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3972 [Define if your linker supports garbage collection of
3973 sections in presence of EH frames.])
3975 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3981 AC_CACHE_CHECK(linker --as-needed support,
3982 gcc_cv_ld_as_needed,
3983 [gcc_cv_ld_as_needed=no
3984 if test $in_tree_ld = yes ; then
3985 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3986 && test $in_tree_ld_is_elf = yes; then
3987 gcc_cv_ld_as_needed=yes
3989 elif test x$gcc_cv_ld != x; then
3990 # Check if linker supports --as-needed and --no-as-needed options
3991 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3992 gcc_cv_ld_as_needed=yes
3996 if test x"$gcc_cv_ld_as_needed" = xyes; then
3997 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3998 [Define if your linker supports --as-needed and --no-as-needed options.])
4001 case "$target:$tm_file" in
4002 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4003 AC_CACHE_CHECK(linker support for omitting dot symbols,
4004 gcc_cv_ld_no_dot_syms,
4005 [gcc_cv_ld_no_dot_syms=no
4006 if test $in_tree_ld = yes ; then
4007 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4008 gcc_cv_ld_no_dot_syms=yes
4010 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4011 cat > conftest1.s <<EOF
4015 cat > conftest2.s <<EOF
4016 .section ".opd","aw"
4021 .quad .LEfoo,.TOC.@tocbase,0
4027 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4028 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4029 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4030 gcc_cv_ld_no_dot_syms=yes
4032 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4035 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4036 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4037 [Define if your PowerPC64 linker only needs function descriptor syms.])
4040 AC_CACHE_CHECK(linker large toc support,
4041 gcc_cv_ld_large_toc,
4042 [gcc_cv_ld_large_toc=no
4043 if test $in_tree_ld = yes ; then
4044 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4045 gcc_cv_ld_large_toc=yes
4047 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4048 cat > conftest.s <<EOF
4049 .section ".tbss","awT",@nobits
4055 addis 9,13,ie0@got@tprel@ha
4056 ld 9,ie0@got@tprel@l(9)
4058 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4059 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4060 gcc_cv_ld_large_toc=yes
4062 rm -f conftest conftest.o conftest.s
4065 if test x"$gcc_cv_ld_large_toc" = xyes; then
4066 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4067 [Define if your PowerPC64 linker supports a large TOC.])
4072 AC_CACHE_CHECK(linker --build-id support,
4074 [gcc_cv_ld_buildid=no
4075 if test $in_tree_ld = yes ; then
4076 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4077 "$gcc_cv_gld_minor_version" -ge 18 -o \
4078 "$gcc_cv_gld_major_version" -gt 2 \
4079 && test $in_tree_ld_is_elf = yes; then
4080 gcc_cv_ld_buildid=yes
4082 elif test x$gcc_cv_ld != x; then
4083 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4084 gcc_cv_ld_buildid=yes
4087 if test x"$gcc_cv_ld_buildid" = xyes; then
4088 AC_DEFINE(HAVE_LD_BUILDID, 1,
4089 [Define if your linker supports --build-id.])
4092 AC_ARG_ENABLE(linker-build-id,
4093 [ --enable-linker-build-id
4094 compiler will always pass --build-id to linker],
4096 enable_linker_build_id=no)
4098 if test x"$enable_linker_build_id" = xyes; then
4099 if test x"$gcc_cv_ld_buildid" = xyes; then
4100 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4101 [Define if gcc should always pass --build-id to linker.])
4103 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4107 # In binutils 2.21, GNU ld gained support for new emulations fully
4108 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4109 AC_CACHE_CHECK(linker *_sol2 emulation support,
4110 gcc_cv_ld_sol2_emulation,
4111 [gcc_cv_ld_sol2_emulation=no
4112 if test $in_tree_ld = yes ; then
4113 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4114 "$gcc_cv_gld_minor_version" -ge 21 -o \
4115 "$gcc_cv_gld_major_version" -gt 2 \
4116 && test $in_tree_ld_is_elf = yes; then
4117 gcc_cv_ld_sol2_emulation=yes
4119 elif test x$gcc_cv_ld != x; then
4120 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4121 grep _sol2 > /dev/null; then
4122 gcc_cv_ld_sol2_emulation=yes
4125 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4126 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4127 [Define if your linker supports the *_sol2 emulations.])
4130 AC_CACHE_CHECK(linker --sysroot support,
4132 [gcc_cv_ld_sysroot=no
4133 if test $in_tree_ld = yes ; then
4134 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4135 gcc_cv_ld_sysroot=yes
4137 elif test x$gcc_cv_ld != x; then
4138 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4139 gcc_cv_ld_sysroot=yes
4142 if test x"$gcc_cv_ld_sysroot" = xyes; then
4143 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4144 [Define if your linker supports --sysroot.])
4147 if test x$with_sysroot = x && test x$host = x$target \
4148 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4149 && test "$prefix" != "NONE"; then
4150 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4151 [Define to PREFIX/include if cpp should also search that directory.])
4154 # Test for stack protector support in target C library.
4155 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4156 gcc_cv_libc_provides_ssp,
4157 [gcc_cv_libc_provides_ssp=no
4159 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4160 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4161 if test "x$with_headers" != x; then
4162 glibc_header_dir=$with_headers
4163 elif test "x$with_sysroot" = x; then
4164 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4165 elif test "x$with_build_sysroot" != "x"; then
4166 glibc_header_dir="${with_build_sysroot}/usr/include"
4167 elif test "x$with_sysroot" = xyes; then
4168 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4170 glibc_header_dir="${with_sysroot}/usr/include"
4173 glibc_header_dir=/usr/include
4175 [# glibc 2.4 and later provides __stack_chk_fail and
4176 # either __stack_chk_guard, or TLS access to stack guard canary.
4177 if test -f $glibc_header_dir/features.h \
4178 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4179 $glibc_header_dir/features.h > /dev/null; then
4180 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4181 $glibc_header_dir/features.h > /dev/null; then
4182 gcc_cv_libc_provides_ssp=yes
4183 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4184 $glibc_header_dir/features.h > /dev/null \
4185 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4186 $glibc_header_dir/features.h > /dev/null; then
4187 gcc_cv_libc_provides_ssp=yes
4188 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4189 $glibc_header_dir/features.h > /dev/null && \
4190 test -f $glibc_header_dir/bits/uClibc_config.h && \
4191 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4192 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
4193 gcc_cv_libc_provides_ssp=yes
4198 # Avoid complicated tests (see
4199 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4200 # simply assert that glibc does provide this, which is true for all
4201 # realistically usable GNU/Hurd configurations.
4202 gcc_cv_libc_provides_ssp=yes;;
4203 *-*-darwin* | *-*-freebsd*)
4204 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4205 [echo "no __stack_chk_fail on this target"])
4207 *) gcc_cv_libc_provides_ssp=no ;;
4210 if test x$gcc_cv_libc_provides_ssp = xyes; then
4211 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4212 [Define if your target C library provides stack protector support])
4215 # Check if TFmode long double should be used by default or not.
4216 # Some glibc targets used DFmode long double, but with glibc 2.4
4217 # and later they can use TFmode.
4219 powerpc*-*-linux* | \
4224 AC_ARG_WITH(long-double-128,
4225 [ --with-long-double-128 Use 128-bit long double by default.],
4226 gcc_cv_target_ldbl128="$with_long_double_128",
4227 [[gcc_cv_target_ldbl128=no
4228 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4229 if test "x$with_sysroot" = x; then
4230 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4231 elif test "x$with_build_sysroot" != "x"; then
4232 glibc_header_dir="${with_build_sysroot}/usr/include"
4233 elif test "x$with_sysroot" = xyes; then
4234 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4236 glibc_header_dir="${with_sysroot}/usr/include"
4239 glibc_header_dir=/usr/include
4241 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4242 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4243 && gcc_cv_target_ldbl128=yes
4247 if test x$gcc_cv_target_ldbl128 = xyes; then
4248 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4249 [Define if TFmode long double should be the default])
4252 # Find out what GC implementation we want, or may, use.
4254 [ --with-gc={page,zone} choose the garbage collection mechanism to use
4262 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4265 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4270 echo "Using $GGC for garbage collection."
4272 # Libraries to use on the host. This will normally be set by the top
4273 # level Makefile. Here we simply capture the value for our Makefile.
4274 if test -z "${HOST_LIBS+set}"; then
4279 # Use the system's zlib library.
4281 zlibinc="-I\$(srcdir)/../zlib"
4282 AC_ARG_WITH(system-zlib,
4283 [ --with-system-zlib use installed libz],
4290 dnl Very limited version of automake's enable-maintainer-mode
4292 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4293 dnl maintainer-mode is disabled by default
4294 AC_ARG_ENABLE(maintainer-mode,
4295 [ --enable-maintainer-mode
4296 enable make rules and dependencies not useful
4297 (and sometimes confusing) to the casual installer],
4298 maintainer_mode=$enableval,
4301 AC_MSG_RESULT($maintainer_mode)
4303 if test "$maintainer_mode" = "yes"; then
4314 # Make empty files to contain the specs and options for each language.
4315 # Then add #include lines to for a compiler that has specs and/or options.
4321 # These (without "all_") are set in each config-lang.in.
4322 # `language' must be a single word so is spelled singularly.
4325 all_outputs='Makefile gccbug'
4326 # List of language makefile fragments.
4328 # Additional files for gengtype
4329 all_gtfiles="$target_gtfiles"
4331 # These are the languages that are set in --enable-languages,
4332 # and are available in the GCC tree.
4333 all_selected_languages=
4335 # Add the language fragments.
4336 # Languages are added via two mechanisms. Some information must be
4337 # recorded in makefile variables, these are defined in config-lang.in.
4338 # We accumulate them and plug them into the main Makefile.
4339 # The other mechanism is a set of hooks for each of the main targets
4340 # like `clean', `install', etc.
4342 language_hooks="Make-hooks"
4344 for lang in ${srcdir}/*/config-lang.in
4347 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4349 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4350 if test "x$lang_alias" = x
4352 echo "$lang doesn't set \$language." 1>&2
4355 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4356 subdirs="$subdirs $subdir"
4358 # $gcc_subdir is where the gcc integration files are to be found
4359 # for a language, both for internal compiler purposes (compiler
4360 # sources implementing front-end to GCC tree converters), and for
4361 # build infrastructure purposes (Make-lang.in, etc.)
4363 # This will be <subdir> (relative to $srcdir) if a line like
4364 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4365 # is found in <langdir>/config-lang.in, and will remain <langdir>
4368 # Except for the language alias (fetched above), the regular
4369 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4370 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4371 # only this and the language alias.
4373 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4374 if [ "$gcc_subdir" = "" ]; then
4375 gcc_subdir="$subdir"
4378 case ",$enable_languages," in
4380 all_selected_languages="$all_selected_languages $lang_alias"
4381 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4382 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4394 . ${srcdir}/$gcc_subdir/config-lang.in
4395 if test "x$language" = x
4397 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4402 case ",$enable_languages," in
4405 for i in $subdir_requires; do
4406 test -f "${srcdir}/$i/config-lang.in" && continue
4414 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4415 if test -f $srcdir/$gcc_subdir/lang.opt; then
4416 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4418 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4419 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4421 all_languages="$all_languages $language"
4422 all_compilers="$all_compilers $compilers"
4423 all_outputs="$all_outputs $outputs"
4424 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4425 case ",$enable_languages," in
4427 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4429 AC_SUBST(enable_lto)
4430 # LTO needs to speak the platform's object file format, and has a
4431 # number of implementations of the required binary file access APIs.
4432 # ELF is the most common, and default. We only link libelf if ELF
4433 # is indeed the selected format.
4434 LTO_BINARY_READER=${lto_binary_reader}
4435 LTO_USE_LIBELF=-lelf
4436 if test "x$lto_binary_reader" != "xlto-elf" ; then
4439 AC_SUBST(LTO_BINARY_READER)
4440 AC_SUBST(LTO_USE_LIBELF)
4446 # Pick up gtfiles for c
4448 . ${srcdir}/c-config-lang.in
4449 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4452 for language in $all_selected_languages
4454 check_languages="$check_languages check-$language"
4457 # We link each language in with a set of hooks, reached indirectly via
4458 # lang.${target}. Only do so for selected languages.
4462 target_list="all.cross start.encap rest.encap tags \
4463 install-common install-man install-info install-pdf install-html dvi \
4464 pdf html uninstall info man srcextra srcman srcinfo \
4465 mostlyclean clean distclean maintainer-clean install-plugin"
4467 for t in $target_list
4470 for lang in $all_selected_languages
4474 echo "lang.$t: $x" >> Make-hooks
4483 echo "dir ." > .gdbinit
4484 echo "dir ${srcdir}" >> .gdbinit
4485 if test x$gdb_needs_out_file_path = xyes
4487 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4489 if test "x$subdirs" != x; then
4492 echo "dir ${srcdir}/$s" >> .gdbinit
4495 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4497 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4498 AC_SUBST(gcc_tooldir)
4501 # Find a directory in which to install a shared libgcc.
4503 AC_ARG_ENABLE(version-specific-runtime-libs,
4504 [ --enable-version-specific-runtime-libs
4505 specify that runtime libraries should be
4506 installed in a compiler-specific directory])
4508 AC_ARG_WITH(slibdir,
4509 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
4510 slibdir="$with_slibdir",
4511 if test "${enable_version_specific_runtime_libs+set}" = set; then
4512 slibdir='$(libsubdir)'
4513 elif test "$host" != "$target"; then
4514 slibdir='$(build_tooldir)/lib'
4520 # Substitute configuration variables
4523 AC_SUBST(all_compilers)
4524 AC_SUBST(all_gtfiles)
4525 AC_SUBST(all_lang_makefrags)
4526 AC_SUBST(all_languages)
4527 AC_SUBST(all_selected_languages)
4528 AC_SUBST(build_exeext)
4529 AC_SUBST(build_install_headers_dir)
4530 AC_SUBST(build_xm_file_list)
4531 AC_SUBST(build_xm_include_list)
4532 AC_SUBST(build_xm_defines)
4533 AC_SUBST(build_file_translate)
4534 AC_SUBST(check_languages)
4535 AC_SUBST(cpp_install_dir)
4536 AC_SUBST(xmake_file)
4537 AC_SUBST(tmake_file)
4538 AC_SUBST(TM_ENDIAN_CONFIG)
4539 AC_SUBST(TM_MULTILIB_CONFIG)
4540 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4541 AC_SUBST(extra_gcc_objs)
4542 AC_SUBST(user_headers_inc_next_pre)
4543 AC_SUBST(user_headers_inc_next_post)
4544 AC_SUBST(extra_headers_list)
4545 AC_SUBST(extra_objs)
4546 AC_SUBST(extra_parts)
4547 AC_SUBST(extra_passes)
4548 AC_SUBST(extra_programs)
4549 AC_SUBST(float_h_file)
4550 AC_SUBST(gcc_config_arguments)
4551 AC_SUBST(gcc_gxx_include_dir)
4552 AC_SUBST(host_exeext)
4553 AC_SUBST(host_xm_file_list)
4554 AC_SUBST(host_xm_include_list)
4555 AC_SUBST(host_xm_defines)
4556 AC_SUBST(out_host_hook_obj)
4558 AC_SUBST(lang_opt_files)
4559 AC_SUBST(lang_specs_files)
4560 AC_SUBST(lang_tree_files)
4561 AC_SUBST(local_prefix)
4563 AC_SUBST(objc_boehm_gc)
4565 AC_SUBST(out_object_file)
4566 AC_SUBST(thread_file)
4567 AC_SUBST(tm_file_list)
4568 AC_SUBST(tm_include_list)
4569 AC_SUBST(tm_defines)
4570 AC_SUBST(tm_p_file_list)
4571 AC_SUBST(tm_p_include_list)
4572 AC_SUBST(xm_file_list)
4573 AC_SUBST(xm_include_list)
4574 AC_SUBST(xm_defines)
4575 AC_SUBST(use_gcc_stdint)
4576 AC_SUBST(c_target_objs)
4577 AC_SUBST(cxx_target_objs)
4578 AC_SUBST(fortran_target_objs)
4579 AC_SUBST(target_cpu_default)
4581 AC_SUBST_FILE(language_hooks)
4584 if test x${build} = x${host} ; then
4585 if test x${host} = x${target} ; then
4586 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4588 echo "Links are now set up to build a cross-compiler" 1>&2
4589 echo " from ${host} to ${target}." 1>&2
4592 if test x${host} = x${target} ; then
4593 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4594 echo " for ${target}." 1>&2
4596 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4597 echo " from ${host} to ${target}." 1>&2
4601 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4602 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4604 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4605 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4607 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4608 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4609 if test "x${CLOOGLIBS}" != "x" ; then
4610 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4613 AC_ARG_VAR(LIBELFLIBS,[How to link libelf])
4614 AC_ARG_VAR(LIBELFINC,[How to find libelf include files])
4615 if test "x${LIBELFLIBS}" != "x" ; then
4616 AC_DEFINE(HAVE_libelf, 1, [Define if libelf is in use.])
4619 # Check for plugin support
4620 AC_ARG_ENABLE(plugin,
4621 [ --enable-plugin enable plugin support],
4622 enable_plugin=$enableval,
4623 enable_plugin=yes; default_plugin=yes)
4626 if test x"$enable_plugin" = x"yes"; then
4630 export_sym_check="$gcc_cv_nm -g"
4633 export_sym_check="$gcc_cv_objdump -T"
4636 AC_MSG_CHECKING([for exported symbols])
4637 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4638 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4639 if $export_sym_check conftest | grep foobar > /dev/null; then
4640 : # No need to use a flag
4642 AC_MSG_CHECKING([for -rdynamic])
4643 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
4644 if $export_sym_check conftest | grep foobar > /dev/null; then
4646 pluginlibs="-rdynamic"
4651 AC_MSG_RESULT([$plugin_rdynamic])
4656 AC_SEARCH_LIBS([dlopen], [dl])
4657 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
4658 pluginlibs="$pluginlibs -ldl"
4662 # Check that we can build shared objects with -fPIC -shared
4663 saved_LDFLAGS="$LDFLAGS"
4666 LDFLAGS="$LDFLAGS -fPIC -shared -undefined dynamic_lookup"
4669 LDFLAGS="$LDFLAGS -fPIC -shared"
4672 AC_MSG_CHECKING([for -fPIC -shared])
4674 [extern int X;],[return X == 0;],
4675 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
4676 [AC_MSG_RESULT([no]); have_pic_shared=no])
4677 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
4681 LDFLAGS="$saved_LDFLAGS"
4683 # If plugin support had been requested but not available, fail.
4684 if test x"$enable_plugin" = x"no" ; then
4685 if test x"$default_plugin" != x"yes"; then
4687 Building GCC with plugin support requires a host that supports
4688 -fPIC, -shared, -ldl and -rdynamic.])
4693 AC_SUBST(pluginlibs)
4694 AC_SUBST(enable_plugin)
4695 if test x"$enable_plugin" = x"yes"; then
4696 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
4699 # Configure the subdirectories
4700 # AC_CONFIG_SUBDIRS($subdirs)
4702 # Create the Makefile
4703 # and configure language subdirectories
4704 AC_CONFIG_FILES($all_outputs)
4706 AC_CONFIG_COMMANDS([default],
4708 case ${CONFIG_HEADERS} in
4709 *auto-host.h:config.in*)
4712 # Make sure all the subdirs exist.
4713 for d in $subdirs doc build c-family
4715 test -d $d || mkdir $d
4718 [subdirs='$subdirs'])