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, $dfp,
613 [Define to 1 to enable decimal float extension to C.])
615 # Use default_decimal_float for dependency.
616 enable_decimal_float=$default_decimal_float
618 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
619 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
620 [Define to 1 to specify that we are using the BID decimal floating
621 point format instead of DPD])
623 # Enable C extension for fixed-point arithmetic.
624 AC_ARG_ENABLE(fixed-point,
625 [ --enable-fixed-point enable fixed-point arithmetic extension to C],
633 AC_MSG_WARN([fixed-point is not supported on IRIX, ignored])
634 enable_fixed_point=no
637 enable_fixed_point=yes
642 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
643 enable_fixed_point=no
647 AC_SUBST(enable_fixed_point)
649 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
650 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
651 [Define to 1 to enable fixed-point arithmetic extension to C.])
654 # Pass with no value to take the default
655 # Pass with a value to specify a thread package
656 AC_ARG_ENABLE(threads,
657 [ --enable-threads enable thread usage for target GCC
658 --enable-threads=LIB use LIB thread package for target GCC],,
662 [ --enable-tls enable or disable generation of tls code
663 overriding the assembler check for tls support],
667 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
668 Valid choices are 'yes' and 'no'.]) ;;
672 AC_ARG_ENABLE(objc-gc,
673 [ --enable-objc-gc enable the use of Boehm's garbage collector with
674 the GNU Objective-C runtime],
675 if test x$enable_objc_gc = xno; then
683 [ --with-dwarf2 force the default debug format to be DWARF 2],
684 dwarf2="$with_dwarf2",
687 AC_ARG_ENABLE(shared,
688 [ --disable-shared don't provide a shared libgcc],
690 case $enable_shared in
694 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
695 for pkg in $enableval; do
696 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
703 ], [enable_shared=yes])
704 AC_SUBST(enable_shared)
706 AC_ARG_WITH(build-sysroot,
707 [ --with-build-sysroot=sysroot
708 use sysroot as the system root during the build])
711 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
713 case ${with_sysroot} in
714 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
715 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
718 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
719 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
721 if test "x$prefix" = xNONE; then
722 test_prefix=/usr/local
726 if test "x$exec_prefix" = xNONE; then
727 test_exec_prefix=$test_prefix
729 test_exec_prefix=$exec_prefix
731 case ${TARGET_SYSTEM_ROOT} in
732 "${test_prefix}"|"${test_prefix}/"*|\
733 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
734 '${prefix}'|'${prefix}/'*|\
735 '${exec_prefix}'|'${exec_prefix}/'*)
736 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
737 TARGET_SYSTEM_ROOT_DEFINE="$t"
742 TARGET_SYSTEM_ROOT_DEFINE=
743 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
745 AC_SUBST(TARGET_SYSTEM_ROOT)
746 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
747 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
750 [AS_HELP_STRING([--with-specs=SPECS],
751 [add SPECS to driver command-line processing])],
752 [CONFIGURE_SPECS=$withval],
755 AC_SUBST(CONFIGURE_SPECS)
757 ACX_PKGVERSION([GCC])
758 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
760 # Sanity check enable_languages in case someone does not run the toplevel
761 # configure # script.
762 AC_ARG_ENABLE(languages,
763 [ --enable-languages=LIST specify which front-ends to build],
764 [case ,${enable_languages}, in
766 # go safe -- we cannot be much sure without the toplevel
768 # analysis of which target libs are present and usable
772 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
777 enable_languages=c,${enable_languages}
780 [enable_languages=c])
782 AC_ARG_WITH(multilib-list,
783 [ --with-multilib-list Select multilibs (SH only)],
785 with_multilib_list=default)
787 # -------------------------
788 # Checks for other programs
789 # -------------------------
793 # Find some useful tools
795 # We need awk to create options.c and options.h.
796 # Bail out if it's missing.
798 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
806 # By default, the Darwin ranlib will not treat common symbols as
807 # definitions when building the archive table of contents. Other
808 # ranlibs do that; pass an option to the Darwin ranlib that makes
809 # it behave similarly.
815 AC_SUBST(ranlib_flags)
819 # See if cmp has --ignore-initial.
820 gcc_AC_PROG_CMP_IGNORE_INITIAL
822 # See if we have the mktemp command.
823 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
825 # See if makeinfo has been installed and is modern enough
826 # that we can use it.
827 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
828 [GNU texinfo.* \([0-9][0-9.]*\)],
829 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
830 if test $gcc_cv_prog_makeinfo_modern = no; then
832 *** Makeinfo is missing or too old.
833 *** Info documentation will not be built.])
840 # Is pod2man recent enough to regenerate manpages?
841 AC_MSG_CHECKING([for recent Pod::Man])
842 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
844 GENERATED_MANPAGES=generated-manpages
849 AC_SUBST(GENERATED_MANPAGES)
851 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
854 dnl Don't use AC_PROG_LEX; we insist on flex.
855 dnl LEXLIB is not useful in gcc.
856 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
859 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
861 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
862 # check for build == host before using them.
865 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
866 && test -d ../binutils ; then
867 NM='${objdir}/../binutils/nm-new'
869 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
873 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
874 && test -d ../binutils ; then
875 AR='${objdir}/../binutils/ar'
877 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
881 # --------------------
882 # Checks for C headers
883 # --------------------
885 # Need to reject headers which give warnings, so that the -Werror bootstrap
886 # works later. *sigh* This needs to come before all header checks.
893 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
894 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
895 sys/resource.h sys/param.h sys/times.h sys/stat.h \
896 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
898 # Check for thread headers.
899 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
900 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
902 # These tests can't be done till we know if we have limits.h.
911 # These libraries may be used by collect2.
912 # We may need a special search path to get them linked.
913 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
915 for libs in '' -lld -lmld \
916 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
917 '-L/usr/lib/cmplrs/cc3.11 -lmld'
920 AC_TRY_LINK_FUNC(ldopen,
921 [gcc_cv_collect2_libs="$libs"; break])
924 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
925 case $gcc_cv_collect2_libs in
927 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
929 AC_SUBST(COLLECT2_LIBS)
931 # When building Ada code on Alpha, we need exc_resume which is usually in
932 # -lexc. So test for it.
935 AC_SEARCH_LIBS(exc_resume, exc)
938 AC_SUBST(GNAT_LIBEXC)
940 # Some systems put ldexp and frexp in libm instead of libc; assume
941 # they're both in the same place. jcf-dump needs them.
944 AC_SEARCH_LIBS(ldexp, m)
949 # Use <inttypes.h> only if it exists,
950 # doesn't clash with <sys/types.h>, and declares intmax_t.
951 AC_MSG_CHECKING(for inttypes.h)
952 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
953 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
954 [[#include <sys/types.h>
955 #include <inttypes.h>]],
956 [[intmax_t i = -1;]])],
957 [gcc_cv_header_inttypes_h=yes],
958 [gcc_cv_header_inttypes_h=no])])
959 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
960 if test $gcc_cv_header_inttypes_h = yes; then
961 AC_DEFINE(HAVE_INTTYPES_H, 1,
962 [Define if you have a working <inttypes.h> header file.])
965 dnl Disabled until we have a complete test for buggy enum bitfields.
966 dnl gcc_AC_C_ENUM_BF_UNSIGNED
968 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
969 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
970 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
971 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
972 putchar_unlocked putc_unlocked)
973 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
974 sysconf strsignal getrusage nl_langinfo \
975 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
978 save_CPPFLAGS="$CPPFLAGS"
980 LIBS="$LIBS $LIBELFLIBS"
981 AC_CHECK_FUNCS(elf_getshdrstrndx,,
982 [AC_CHECK_FUNCS(elf_getshstrndx,
983 [AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
987 return elf_getshstrndx (NULL, 0) == 0;
988 }]])], AC_DEFINE(HAVE_ELF_GETSHSTRNDX_GABI, 1,
989 [Define if elf_getshstrndx has gABI conformant return values.]))])]
992 CPPFLAGS="$save_CPPFLAGS"
994 if test x$ac_cv_func_mbstowcs = xyes; then
995 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
996 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1002 [gcc_cv_func_mbstowcs_works=yes],
1003 [gcc_cv_func_mbstowcs_works=no],
1004 [gcc_cv_func_mbstowcs_works=yes])])
1005 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1006 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1007 [Define this macro if mbstowcs does not crash when its
1008 first argument is NULL.])
1012 AC_CHECK_TYPE(ssize_t, int)
1013 AC_CHECK_TYPE(caddr_t, char *)
1015 gcc_AC_FUNC_MMAP_BLACKLIST
1019 # Under VMS, vfork works very differently than on Unix. The standard test
1020 # won't work, and it isn't easily adaptable. It makes more sense to
1022 ac_cv_func_vfork_works=yes
1028 # Until we have in-tree GNU iconv:
1030 AC_SUBST(LIBICONV_DEP)
1036 # We will need to find libiberty.h and ansidecl.h
1037 saved_CFLAGS="$CFLAGS"
1038 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1039 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1040 strsignal strstr strverscmp \
1041 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1042 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1043 #include "ansidecl.h"
1044 #include "system.h"])
1046 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1047 #include "ansidecl.h"
1049 #ifdef HAVE_SYS_RESOURCE_H
1050 #include <sys/resource.h>
1054 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1055 #include "ansidecl.h"
1057 #ifdef HAVE_SYS_RESOURCE_H
1058 #include <sys/resource.h>
1060 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1061 [Define to `long' if <sys/resource.h> doesn't define.])])
1063 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1064 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1065 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1066 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1067 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1068 #include "ansidecl.h"
1077 gcc_AC_CHECK_DECLS(times, , ,[
1078 #include "ansidecl.h"
1080 #ifdef HAVE_SYS_TIMES_H
1081 #include <sys/times.h>
1085 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1086 #include "ansidecl.h"
1091 # More time-related stuff.
1092 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1093 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1094 #include "ansidecl.h"
1096 #ifdef HAVE_SYS_TIMES_H
1097 #include <sys/times.h>
1099 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1100 if test $ac_cv_struct_tms = yes; then
1101 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1102 [Define if <sys/times.h> defines struct tms.])
1105 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1106 # revisit after autoconf 2.50.
1107 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1108 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1109 #include "ansidecl.h"
1111 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1112 if test $gcc_cv_type_clock_t = yes; then
1113 AC_DEFINE(HAVE_CLOCK_T, 1,
1114 [Define if <time.h> defines clock_t.])
1117 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1118 CFLAGS="$saved_CFLAGS"
1120 gcc_AC_INITFINI_ARRAY
1122 # mkdir takes a single argument on some systems.
1123 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1131 # With Setjmp/Longjmp based exception handling.
1132 AC_ARG_ENABLE(sjlj-exceptions,
1133 [ --enable-sjlj-exceptions
1134 arrange to use setjmp/longjmp exception handling],
1137 if test $enableval != yes; then
1138 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1143 force_sjlj_exceptions=yes],
1146 force_sjlj_exceptions=yes
1150 force_sjlj_exceptions=no
1153 if test $force_sjlj_exceptions = yes; then
1154 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1155 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1156 [Define 0/1 to force the choice for exception handling model.])
1159 # For platforms with the unwind ABI which includes an unwind library,
1160 # libunwind, we can choose to use the system libunwind.
1161 # config.gcc also contains tests of with_system_libunwind.
1162 GCC_CHECK_UNWIND_GETIPINFO
1164 # --------------------------------------------------------
1165 # Build, host, and target specific configuration fragments
1166 # --------------------------------------------------------
1168 # Collect build-machine-specific information.
1169 . ${srcdir}/config.build
1171 # Collect host-machine-specific information.
1172 . ${srcdir}/config.host
1176 # Collect target-machine-specific information.
1177 . ${srcdir}/config.gcc
1179 extra_objs="${host_extra_objs} ${extra_objs}"
1180 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1182 # Default the target-machine variables that were not explicitly set.
1183 if test x"$tm_file" = x
1184 then tm_file=$cpu_type/$cpu_type.h; fi
1186 if test x"$extra_headers" = x
1187 then extra_headers=; fi
1189 if test x$md_file = x
1190 then md_file=$cpu_type/$cpu_type.md; fi
1192 if test x$out_file = x
1193 then out_file=$cpu_type/$cpu_type.c; fi
1195 if test x"$tmake_file" = x
1196 then tmake_file=$cpu_type/t-$cpu_type
1199 if test x"$dwarf2" = xyes
1200 then tm_file="$tm_file tm-dwarf2.h"
1203 # Say what files are being used for the output code and MD file.
1204 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1205 echo "Using \`$srcdir/config/$md_file' as machine description file."
1207 # If any of the xm_file variables contain nonexistent files, warn
1208 # about them and drop them.
1211 for x in $build_xm_file; do
1212 if test -f $srcdir/config/$x
1214 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1220 for x in $host_xm_file; do
1221 if test -f $srcdir/config/$x
1223 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1229 for x in $xm_file; do
1230 if test -f $srcdir/config/$x
1232 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1238 for f in $tm_file; do
1241 if test $count = ax; then
1242 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1244 echo "Using the following target machine macro files:"
1245 for f in $tm_file; do
1246 echo " $srcdir/config/$f"
1250 if test x$need_64bit_hwint = xyes; then
1251 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1252 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1255 if test x$use_long_long_for_widest_fast_int = xyes; then
1256 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1257 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1258 efficiently supported by the host hardware.])
1262 for f in $host_xm_file; do
1265 if test $count = a; then
1267 elif test $count = ax; then
1268 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1270 echo "Using the following host machine macro files:"
1271 for f in $host_xm_file; do
1272 echo " $srcdir/config/$f"
1275 echo "Using ${out_host_hook_obj} for host machine hooks."
1277 if test "$host_xm_file" != "$build_xm_file"; then
1279 for f in $build_xm_file; do
1282 if test $count = a; then
1284 elif test $count = ax; then
1285 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1287 echo "Using the following build machine macro files:"
1288 for f in $build_xm_file; do
1289 echo " $srcdir/config/$f"
1296 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1297 gcc_cv_mcontext_underscores,
1299 #include <sys/cdefs.h>
1300 #include <sys/signal.h>
1301 #include <ucontext.h>
1302 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1304 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1305 if test $gcc_cv_mcontext_underscores = yes; then
1306 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1307 [mcontext_t fields start with __])
1316 # Check if a valid thread package
1317 case ${enable_threads} in
1320 target_thread_file='single'
1324 target_thread_file='single'
1326 aix | dce | gnat | irix | posix | posix95 | rtems | \
1327 single | solaris | vxworks | win32 | mipssde)
1328 target_thread_file=${enable_threads}
1331 echo "${enable_threads} is an unknown thread package" 1>&2
1336 if test x${thread_file} = x; then
1337 # No thread file set by target-specific clauses in config.gcc,
1338 # so use file chosen by default logic above
1339 thread_file=${target_thread_file}
1342 # Make gthr-default.h if we have a thread file.
1344 if test $thread_file != single; then
1345 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1346 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1347 rm -f gthr-default.h-t
1349 mv -f gthr-default.h-t gthr-default.h
1351 gthread_flags=-DHAVE_GTHR_DEFAULT
1353 AC_SUBST(gthread_flags)
1360 if test x$enable___cxa_atexit = xyes || \
1361 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1362 if test x$host = x$target; then
1364 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1365 # keyed to flag_use_cxa_atexit
1370 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1371 [echo "__cxa_atexit can't be enabled on this target"])
1375 # We can't check for __cxa_atexit when building a cross, so assume
1379 if test x$use_cxa_atexit = xyes; then
1380 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1381 [Define if you want to use __cxa_atexit, rather than atexit, to
1382 register C++ destructors for local statics and global objects.
1383 This is essential for fully standards-compliant handling of
1384 destructors, but requires __cxa_atexit in libc.])
1388 # Look for a file containing extra machine modes.
1389 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1390 extra_modes_file='$(srcdir)'/config/${extra_modes}
1391 AC_SUBST(extra_modes_file)
1392 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1393 [Define to the name of a file containing a list of extra machine modes
1394 for this architecture.])
1397 # Convert extra_options into a form suitable for Makefile use.
1399 for f in $extra_options; do
1400 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1402 AC_SUBST(extra_opt_files)
1404 # auto-host.h is the file containing items generated by autoconf and is
1405 # the first file included by config.h.
1406 # If host=build, it is correct to have bconfig include auto-host.h
1407 # as well. If host!=build, we are in error and need to do more
1408 # work to find out the build config parameters.
1409 if test x$host = x$build
1411 build_auto=auto-host.h
1413 # We create a subdir, then run autoconf in the subdir.
1414 # To prevent recursion we set host and build for the new
1415 # invocation of configure to the build for this invocation
1422 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1423 *) realsrcdir=../${srcdir};;
1425 saved_CFLAGS="${CFLAGS}"
1426 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1427 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1428 ${realsrcdir}/configure \
1429 --enable-languages=${enable_languages-all} \
1430 --target=$target_alias --host=$build_alias --build=$build_alias
1431 CFLAGS="${saved_CFLAGS}"
1433 # We just finished tests for the build machine, so rename
1434 # the file auto-build.h in the gcc directory.
1435 mv auto-host.h ../auto-build.h
1438 build_auto=auto-build.h
1440 AC_SUBST(build_subdir)
1442 tm_file="${tm_file} defaults.h"
1443 tm_p_file="${tm_p_file} tm-preds.h"
1444 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1445 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1446 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1447 # put this back in temporarily.
1448 xm_file="auto-host.h ansidecl.h ${xm_file}"
1455 # Compile in configure arguments.
1456 if test -f configargs.h ; then
1457 # Being re-configured.
1458 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1459 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1461 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1464 # Double all backslashes and backslash all quotes to turn
1465 # gcc_config_arguments into a C string.
1466 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1467 $gcc_config_arguments
1469 gcc_config_arguments_str=`cat conftest.out`
1472 cat > configargs.h <<EOF
1473 /* Generated automatically. */
1474 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1475 static const char thread_model[] = "$thread_file";
1477 static const struct {
1478 const char *name, *value;
1479 } configure_default_options[] = $configure_default_options;
1484 gcc_BASEVER=`cat $srcdir/BASE-VER`
1485 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1486 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1487 if test -f $srcdir/REVISION ; then
1488 gcc_REVISION=`cat $srcdir/REVISION`
1492 cat > plugin-version.h <<EOF
1493 #include "configargs.h"
1495 static char basever[] = "$gcc_BASEVER";
1496 static char datestamp[] = "$gcc_DATESTAMP";
1497 static char devphase[] = "$gcc_DEVPHASE";
1498 static char revision[] = "$gcc_REVISION";
1500 /* FIXME plugins: We should make the version information more precise.
1501 One way to do is to add a checksum. */
1503 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1505 configuration_arguments};
1509 # Internationalization
1510 ZW_GNU_GETTEXT_SISTER_DIR
1512 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1513 # -liconv on the link line twice.
1514 case "$LIBINTL" in *$LIBICONV*)
1518 AC_ARG_ENABLE(secureplt,
1519 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1522 AC_ARG_ENABLE(leading-mingw64-underscores,
1523 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1524 [Enable leading underscores on 64 bit mingw targets]),
1526 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1527 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1528 [Define if we should use leading underscore on 64 bit mingw targets])])
1531 [ --enable-cld enable -mcld by default for 32bit x86], [],
1534 AC_ARG_ENABLE(frame-pointer,
1535 [ --enable-frame-pointer enable -fno-omit-frame-pointer by default for 32bit x86], [],
1538 linux* | darwin[[8912]]*)
1539 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1541 enable_frame_pointer=no
1544 enable_frame_pointer=yes
1549 # Windows32 Registry support for specifying GCC installation paths.
1550 AC_ARG_ENABLE(win32-registry,
1551 [ --disable-win32-registry
1552 disable lookup of installation paths in the
1553 Registry on Windows hosts
1554 --enable-win32-registry enable registry lookup (default)
1555 --enable-win32-registry=KEY
1556 use KEY instead of GCC version as the last portion
1557 of the registry key],,)
1560 win32 | pe | cygwin* | mingw32* | uwin*)
1561 if test "x$enable_win32_registry" != xno; then
1562 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1565 if test "x$enable_win32_registry" != xno; then
1566 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1567 [Define to 1 if installation paths should be looked up in the Windows
1568 Registry. Ignored on non-Windows hosts.])
1570 if test "x$enable_win32_registry" != xyes \
1571 && test "x$enable_win32_registry" != x; then
1572 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1573 [Define to be the last component of the Windows registry key under which
1574 to look for installation paths. The full key used will be
1575 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1576 The default is the GCC version number.])
1582 # Get an absolute path to the GCC top-level source directory
1583 holddir=`${PWDCMD-pwd}`
1585 topdir=`${PWDCMD-pwd}`
1588 # Conditionalize the makefile for this host machine.
1590 for f in ${host_xmake_file}
1592 if test -f ${srcdir}/config/$f
1594 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1598 # Conditionalize the makefile for this target machine.
1600 for f in ${tmake_file}
1602 if test -f ${srcdir}/config/$f
1604 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1607 tmake_file="${tmake_file_}"
1609 out_object_file=`basename $out_file .c`.o
1611 tm_file_list="options.h"
1612 tm_include_list="options.h insn-constants.h"
1613 for f in $tm_file; do
1616 f=`echo $f | sed 's/^..//'`
1617 tm_file_list="${tm_file_list} $f"
1618 tm_include_list="${tm_include_list} $f"
1621 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1622 tm_include_list="${tm_include_list} $f"
1625 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1626 tm_include_list="${tm_include_list} config/$f"
1633 for f in $tm_p_file; do
1636 tm_p_file_list="${tm_p_file_list} $f"
1637 tm_p_include_list="${tm_p_include_list} $f"
1640 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1641 tm_p_include_list="${tm_p_include_list} config/$f"
1647 for f in $xm_file; do
1650 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1651 xm_include_list="${xm_include_list} $f"
1654 xm_file_list="${xm_file_list} $f"
1655 xm_include_list="${xm_include_list} $f"
1658 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1659 xm_include_list="${xm_include_list} config/$f"
1665 host_xm_include_list=
1666 for f in $host_xm_file; do
1669 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1670 host_xm_include_list="${host_xm_include_list} $f"
1673 host_xm_file_list="${host_xm_file_list} $f"
1674 host_xm_include_list="${host_xm_include_list} $f"
1677 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1678 host_xm_include_list="${host_xm_include_list} config/$f"
1684 for f in $build_xm_file; do
1687 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1688 build_xm_include_list="${build_xm_include_list} $f"
1690 auto-build.h | auto-host.h )
1691 build_xm_file_list="${build_xm_file_list} $f"
1692 build_xm_include_list="${build_xm_include_list} $f"
1695 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1696 build_xm_include_list="${build_xm_include_list} config/$f"
1701 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1702 # cross-compiler which does not use the native headers and libraries.
1703 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1704 CROSS= AC_SUBST(CROSS)
1705 ALL=all.internal AC_SUBST(ALL)
1706 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1708 if test "x$with_build_sysroot" != x; then
1709 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1711 # This value is used, even on a native system, because
1712 # CROSS_SYSTEM_HEADER_DIR is just
1713 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1714 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1717 if test x$host != x$target
1719 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1721 SYSTEM_HEADER_DIR=$build_system_header_dir
1722 case "$host","$target" in
1723 # Darwin crosses can use the host system's libraries and headers,
1724 # because of the fat library support. Of course, it must be the
1725 # same version of Darwin on both sides. Allow the user to
1726 # just say --target=foo-darwin without a version number to mean
1727 # "the version on this system".
1728 *-*-darwin*,*-*-darwin*)
1729 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1730 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1731 if test $hostos = $targetos -o $targetos = darwin ; then
1733 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1738 i?86-*-*,x86_64-*-* \
1739 | powerpc*-*-*,powerpc64*-*-*)
1740 CROSS="$CROSS -DNATIVE_CROSS" ;;
1742 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1743 SYSTEM_HEADER_DIR=$build_system_header_dir
1746 # If this is a cross-compiler that does not
1747 # have its own set of headers then define
1750 # If this is using newlib, without having the headers available now,
1751 # then define inhibit_libc in LIBGCC2_CFLAGS.
1752 # This prevents libgcc2 from containing any code which requires libc
1754 : ${inhibit_libc=false}
1755 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1756 test x$with_newlib = xyes ; } &&
1757 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1760 AC_SUBST(inhibit_libc)
1762 # When building gcc with a cross-compiler, we need to adjust things so
1763 # that the generator programs are still built with the native compiler.
1764 # Also, we cannot run fixincludes.
1766 # These are the normal (build=host) settings:
1767 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1768 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1769 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1770 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1772 # And these apply if build != host, or we are generating coverage data
1773 if test x$build != x$host || test "x$coverage_flags" != x
1775 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1776 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1779 # Expand extra_headers to include complete path.
1780 # This substitutes for lots of t-* files.
1782 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1783 for file in ${extra_headers} ; do
1784 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1787 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1788 if test x"$use_gcc_tgmath" = xyes
1789 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1792 # Define collect2 in Makefile.
1793 case $host_can_use_collect2 in
1795 *) collect2='collect2$(exeext)' ;;
1797 AC_SUBST([collect2])
1799 # Add a definition of USE_COLLECT2 if system wants one.
1800 case $use_collect2 in
1801 no) use_collect2= ;;
1804 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1805 xm_defines="${xm_defines} USE_COLLECT2"
1806 case $host_can_use_collect2 in
1808 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1814 # ---------------------------
1815 # Assembler & linker features
1816 # ---------------------------
1818 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1819 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1820 # However when ld-new is first executed from the build tree, libtool will
1821 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1822 # to the build tree. While doing this we need to use the previous-stage
1823 # linker, or we have an infinite loop. The presence of a shell script as
1824 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1825 # the gcc/collect-ld script. So we need to know how libtool works, or
1826 # exec-tool will fail.
1828 m4_defun([_LT_CONFIG_COMMANDS], [])
1831 AC_SUBST(enable_fast_install)
1833 # Identify the assembler which will work hand-in-glove with the newly
1834 # built GCC, so that we can examine its features. This is the assembler
1835 # which will be driven by the driver program.
1837 # If build != host, and we aren't building gas in-tree, we identify a
1838 # build->target assembler and hope that it will have the same features
1839 # as the host->target assembler we'll be using.
1840 gcc_cv_gas_major_version=
1841 gcc_cv_gas_minor_version=
1842 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1844 m4_pattern_allow([AS_FOR_TARGET])dnl
1845 AS_VAR_SET_IF(gcc_cv_as,, [
1846 if test -x "$DEFAULT_ASSEMBLER"; then
1847 gcc_cv_as="$DEFAULT_ASSEMBLER"
1848 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1849 && test -f ../gas/Makefile \
1850 && test x$build = x$host; then
1851 gcc_cv_as=../gas/as-new$build_exeext
1852 elif test -x as$build_exeext; then
1853 # Build using assembler in the current directory.
1854 gcc_cv_as=./as$build_exeext
1855 elif test -x $AS_FOR_TARGET; then
1856 gcc_cv_as="$AS_FOR_TARGET"
1858 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1861 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1862 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1863 case "$ORIGINAL_AS_FOR_TARGET" in
1864 ./as | ./as$build_exeext) ;;
1865 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1868 AC_MSG_CHECKING(what assembler to use)
1869 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1870 # Single tree build which includes gas. We want to prefer it
1871 # over whatever linker top-level may have detected, since
1872 # we'll use what we're building after installation anyway.
1873 AC_MSG_RESULT(newly built gas)
1875 _gcc_COMPUTE_GAS_VERSION
1876 in_tree_gas_is_elf=no
1877 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1878 || (grep 'obj_format = multi' ../gas/Makefile \
1879 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1881 in_tree_gas_is_elf=yes
1884 AC_MSG_RESULT($gcc_cv_as)
1888 # Identify the linker which will work hand-in-glove with the newly
1889 # built GCC, so that we can examine its features. This is the linker
1890 # which will be driven by the driver program.
1892 # If build != host, and we aren't building gas in-tree, we identify a
1893 # build->target linker and hope that it will have the same features
1894 # as the host->target linker we'll be using.
1895 gcc_cv_gld_major_version=
1896 gcc_cv_gld_minor_version=
1897 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1898 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1900 AS_VAR_SET_IF(gcc_cv_ld,, [
1901 if test -x "$DEFAULT_LINKER"; then
1902 gcc_cv_ld="$DEFAULT_LINKER"
1903 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1904 && test -f ../ld/Makefile \
1905 && test x$build = x$host; then
1906 gcc_cv_ld=../ld/ld-new$build_exeext
1907 elif test -x collect-ld$build_exeext; then
1908 # Build using linker in the current directory.
1909 gcc_cv_ld=./collect-ld$build_exeext
1910 elif test -x $LD_FOR_TARGET; then
1911 gcc_cv_ld="$LD_FOR_TARGET"
1913 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1916 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1917 PLUGIN_LD=`basename $gcc_cv_ld`
1918 AC_ARG_WITH(plugin-ld,
1919 [ --with-plugin-ld=[[ARG]] specify the plugin linker],
1920 [if test x"$withval" != x; then
1921 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1922 PLUGIN_LD="$withval"
1924 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1925 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1927 # Check to see if we are using gold instead of ld
1928 AC_MSG_CHECKING(whether we are using gold)
1930 if test x$gcc_cv_ld != x; then
1931 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
1932 | grep "GNU gold" > /dev/null; then
1936 AC_MSG_RESULT($ld_is_gold)
1938 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1939 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1940 case "$ORIGINAL_LD_FOR_TARGET" in
1941 ./collect-ld | ./collect-ld$build_exeext) ;;
1942 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1945 AC_MSG_CHECKING(what linker to use)
1946 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1947 # Single tree build which includes ld. We want to prefer it
1948 # over whatever linker top-level may have detected, since
1949 # we'll use what we're building after installation anyway.
1950 AC_MSG_RESULT(newly built ld)
1952 in_tree_ld_is_elf=no
1953 if (grep 'EMUL = .*elf' ../ld/Makefile \
1954 || grep 'EMUL = .*linux' ../ld/Makefile \
1955 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1956 in_tree_ld_is_elf=yes
1958 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
1961 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1962 if test x$gcc_cv_gld_version != x; then
1966 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1967 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1970 AC_MSG_RESULT($gcc_cv_ld)
1974 # Figure out what nm we will be using.
1975 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1976 AS_VAR_SET_IF(gcc_cv_nm,, [
1977 if test -f $gcc_cv_binutils_srcdir/configure.in \
1978 && test -f ../binutils/Makefile \
1979 && test x$build = x$host; then
1980 gcc_cv_nm=../binutils/nm-new$build_exeext
1981 elif test -x nm$build_exeext; then
1982 gcc_cv_nm=./nm$build_exeext
1983 elif test -x $NM_FOR_TARGET; then
1984 gcc_cv_nm="$NM_FOR_TARGET"
1986 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1989 AC_MSG_CHECKING(what nm to use)
1990 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1991 # Single tree build which includes binutils.
1992 AC_MSG_RESULT(newly built nm)
1995 AC_MSG_RESULT($gcc_cv_nm)
1999 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2000 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2001 case "$ORIGINAL_NM_FOR_TARGET" in
2002 ./nm | ./nm$build_exeext) ;;
2003 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2007 # Figure out what objdump we will be using.
2008 AS_VAR_SET_IF(gcc_cv_objdump,, [
2009 if test -f $gcc_cv_binutils_srcdir/configure.in \
2010 && test -f ../binutils/Makefile \
2011 && test x$build = x$host; then
2012 # Single tree build which includes binutils.
2013 gcc_cv_objdump=../binutils/objdump$build_exeext
2014 elif test -x objdump$build_exeext; then
2015 gcc_cv_objdump=./objdump$build_exeext
2016 elif test -x $OBJDUMP_FOR_TARGET; then
2017 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2019 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2022 AC_MSG_CHECKING(what objdump to use)
2023 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2024 # Single tree build which includes binutils.
2025 AC_MSG_RESULT(newly built objdump)
2026 elif test x$gcc_cv_objdump = x; then
2027 AC_MSG_RESULT(not found)
2029 AC_MSG_RESULT($gcc_cv_objdump)
2032 # Figure out what readelf we will be using.
2033 AS_VAR_SET_IF(gcc_cv_readelf,, [
2034 if test -f $gcc_cv_binutils_srcdir/configure.in \
2035 && test -f ../binutils/Makefile \
2036 && test x$build = x$host; then
2037 # Single tree build which includes binutils.
2038 gcc_cv_readelf=../binutils/readelf$build_exeext
2039 elif test -x readelf$build_exeext; then
2040 gcc_cv_readelf=./readelf$build_exeext
2042 AC_PATH_PROG(gcc_cv_readelf, readelf)
2045 AC_MSG_CHECKING(what readelf to use)
2046 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2047 # Single tree build which includes binutils.
2048 AC_MSG_RESULT(newly built readelf)
2049 elif test x$gcc_cv_readelf = x; then
2050 AC_MSG_RESULT(not found)
2052 AC_MSG_RESULT($gcc_cv_readelf)
2055 # Figure out what assembler alignment features are present.
2056 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2060 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2061 [Define if your assembler supports .balign and .p2align.])])
2063 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2066 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2067 [Define if your assembler supports specifying the maximum number
2068 of bytes to skip when using the GAS .p2align command.])])
2070 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2073 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2074 [Define if your assembler supports .literal16.])])
2076 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2078 [conftest_label1: .word 0
2080 conftest_label2: .word 0
2082 [if test x$gcc_cv_nm != x; then
2083 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2084 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2085 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2087 else gcc_cv_as_subsection_m1=yes
2089 rm -f conftest.nm1 conftest.nm2
2091 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2092 [Define if your assembler supports .subsection and .subsection -1 starts
2093 emitting at the beginning of your section.])])
2095 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2098 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2100 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2102 [ .weakref foobar, barfnot],,
2103 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2105 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2108 .NSUBSPA $CODE$,COMDAT],,
2109 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2111 # .hidden needs to be supported in both the assembler and the linker,
2112 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2113 # This is irritatingly difficult to feature test for; we have to check the
2114 # date string after the version number. If we've got an in-tree
2115 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2117 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2118 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2122 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2123 # STV_HIDDEN, so disable .hidden support if so.
2126 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2127 cat > conftest.s <<EOF
2134 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2135 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2136 grep '\.hidden default' > /dev/null; then
2139 gcc_cv_as_hidden=yes
2142 # Assume bug is present if objdump is missing.
2147 gcc_cv_as_hidden=yes
2151 # gnu_indirect_function type is an extension proposed at
2152 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2153 # selection of function implementation
2154 AC_ARG_ENABLE(gnu-indirect-function,
2155 [AS_HELP_STRING([--enable-gnu-indirect-function],
2156 [enable the use of the @gnu_indirect_function to glibc systems])],
2157 [case $enable_gnu_indirect_function in
2159 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2160 Valid choices are 'yes' and 'no'.]) ;;
2162 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2163 if test x$enable_gnu_indirect_function = xyes; then
2164 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2165 [Define if your system supports gnu indirect functions.])
2169 if test $in_tree_ld != yes ; then
2170 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2171 if test x"$ld_is_gold" = xyes; then
2172 gcc_cv_ld_hidden=yes
2173 elif echo "$ld_ver" | grep GNU > /dev/null; then
2174 ld_vers=`echo $ld_ver | sed -n \
2175 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2176 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2177 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2178 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2179 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2184 # Solaris 2 ld -V output looks like this for a regular version:
2186 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2188 # but test versions add stuff at the end:
2190 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2192 ld_ver=`$gcc_cv_ld -V 2>&1`
2193 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2194 ld_vers=`echo $ld_ver | sed -n \
2195 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2196 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2197 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2205 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2206 [[if test $in_tree_ld = yes ; then
2208 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2209 && test $in_tree_ld_is_elf = yes; then
2210 gcc_cv_ld_hidden=yes
2213 gcc_cv_ld_hidden=yes
2214 if echo "$ld_ver" | grep GNU > /dev/null; then
2215 if test 0"$ld_date" -lt 20020404; then
2216 if test -n "$ld_date"; then
2217 # If there was date string, but was earlier than 2002-04-04, fail
2219 elif test -z "$ld_vers"; then
2220 # If there was no date string nor ld version number, something is wrong
2223 test -z "$ld_vers_patch" && ld_vers_patch=0
2224 if test "$ld_vers_major" -lt 2; then
2226 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2227 gcc_cv_ld_hidden="no"
2228 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2235 hppa64*-*-hpux* | ia64*-*-hpux*)
2236 gcc_cv_ld_hidden=yes
2238 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2239 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2240 # .symbolic was only added in Solaris 9 12/02.
2241 gcc_cv_ld_hidden=yes
2249 libgcc_visibility=no
2250 AC_SUBST(libgcc_visibility)
2251 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2252 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2253 libgcc_visibility=yes
2254 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2255 [Define if your assembler and linker support .hidden.])
2258 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2259 gcc_cv_ld_ro_rw_mix=unknown
2260 if test $in_tree_ld = yes ; then
2261 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2262 && test $in_tree_ld_is_elf = yes; then
2263 gcc_cv_ld_ro_rw_mix=read-write
2265 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2266 echo '.section myfoosect, "a"' > conftest1.s
2267 echo '.section myfoosect, "aw"' > conftest2.s
2268 echo '.byte 1' >> conftest2.s
2269 echo '.section myfoosect, "a"' > conftest3.s
2270 echo '.byte 0' >> conftest3.s
2271 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2272 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2273 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2274 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2275 conftest2.o conftest3.o > /dev/null 2>&1; then
2276 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2277 | sed -e '/myfoosect/!d' -e N`
2278 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2279 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2280 gcc_cv_ld_ro_rw_mix=read-only
2282 gcc_cv_ld_ro_rw_mix=read-write
2287 rm -f conftest.* conftest[123].*
2290 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2291 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2292 [Define if your linker links a mix of read-only
2293 and read-write sections into a read-write section.])
2295 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2297 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2298 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2306 [[# GAS versions before 2.11 do not support uleb128,
2307 # despite appearing to.
2308 # ??? There exists an elf-specific test that will crash
2309 # the assembler. Perhaps it's better to figure out whether
2310 # arbitrary sections are supported and try the test.
2311 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2312 if echo "$as_ver" | grep GNU > /dev/null; then
2313 as_vers=`echo $as_ver | sed -n \
2314 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2315 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2316 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2317 if test $as_major -eq 2 && test $as_minor -lt 11
2319 else gcc_cv_as_leb128=yes
2322 [AC_DEFINE(HAVE_AS_LEB128, 1,
2323 [Define if your assembler supports .sleb128 and .uleb128.])])
2325 # Check if we have assembler support for unwind directives.
2326 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2333 .cfi_escape 1, 2, 3, 4, 5
2337 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2338 # read-only and read-write sections, we need to make sure that the
2339 # assembler used emits read-write .eh_frame sections.
2340 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2341 if test "x$gcc_cv_objdump" != x; then
2342 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2343 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2344 gcc_cv_as_cfi_directive=no
2347 i?86-*-solaris2.1[[0-9]]*)
2348 # On Solaris/x86, make sure that GCC and gas agree on using
2349 # read-only .eh_frame sections for 64-bit.
2350 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2351 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2352 sed -e /.eh_frame/!d -e N | \
2353 grep READONLY > /dev/null; then
2354 gcc_cv_as_cfi_directive=yes
2356 gcc_cv_as_cfi_directive=no
2360 gcc_cv_as_cfi_directive=yes
2365 # no objdump, err on the side of caution
2366 gcc_cv_as_cfi_directive=no
2369 gcc_cv_as_cfi_directive=yes
2373 gcc_cv_as_cfi_directive=yes
2376 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2377 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2381 .cfi_adjust_cfa_offset 64
2383 .cfi_adjust_cfa_offset 128
2386 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2387 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2388 gcc_cv_as_cfi_advance_working=yes
2392 # no objdump, err on the side of caution
2393 gcc_cv_as_cfi_advance_working=no
2395 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2396 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2397 [`if test $gcc_cv_as_cfi_directive = yes \
2398 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2399 [Define 0/1 if your assembler supports CFI directives.])
2401 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2402 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2403 gcc_cv_as_cfi_personality_directive, ,,
2406 .cfi_personality 0, symbol
2408 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2409 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2410 then echo 1; else echo 0; fi`],
2411 [Define 0/1 if your assembler supports .cfi_personality.])
2413 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2414 gcc_cv_as_cfi_sections_directive, ,,
2416 .cfi_sections .debug_frame, .eh_frame
2420 win32 | pe | cygwin* | mingw32* | uwin*)
2421 # Need to check that we generated the correct relocation for the
2422 # .debug_frame section. This was fixed for binutils 2.21.
2423 gcc_cv_as_cfi_sections_directive=no
2424 if test "x$gcc_cv_objdump" != x; then
2425 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2426 grep secrel > /dev/null; then
2427 gcc_cv_as_cfi_sections_directive=yes
2432 gcc_cv_as_cfi_sections_directive=yes
2435 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2436 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2437 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2438 then echo 1; else echo 0; fi`],
2439 [Define 0/1 if your assembler supports .cfi_sections.])
2441 # GAS versions up to and including 2.11.0 may mis-optimize
2443 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2451 .section .eh_frame,"aw",@progbits
2453 .4byte .LECIE1-.LSCIE1
2467 .4byte .LEFDE1-.LASFDE1
2469 .4byte .LASFDE1-__FRAME_BEGIN__
2477 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2478 cat > conftest.lit <<EOF
2479 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2480 0010 01000000 12000000 18000000 00000000 ................
2481 0020 08000000 04080000 0044 .........D @&t@
2483 cat > conftest.big <<EOF
2484 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2485 0010 00000001 00000012 00000018 00000000 ................
2486 0020 00000008 04000000 0844 .........D @&t@
2488 # If the assembler didn't choke, and we can objdump,
2489 # and we got the correct data, then succeed.
2490 # The text in the here-document typically retains its unix-style line
2491 # endings, while the output of objdump will use host line endings.
2492 # Therefore, use diff -b for the comparisons.
2493 if test x$gcc_cv_objdump != x \
2494 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2495 | tail -3 > conftest.got \
2496 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2497 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2499 gcc_cv_as_eh_frame=yes
2500 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2501 gcc_cv_as_eh_frame=buggy
2503 # Uh oh, what do we do now?
2504 gcc_cv_as_eh_frame=no
2507 if test $gcc_cv_as_eh_frame = buggy; then
2508 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2509 [Define if your assembler mis-optimizes .eh_frame data.])
2512 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2513 [elf,2,12,0], [--fatal-warnings],
2514 [.section .rodata.str, "aMS", @progbits, 1])
2515 if test $gcc_cv_as_shf_merge = no; then
2516 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2517 [elf,2,12,0], [--fatal-warnings],
2518 [.section .rodata.str, "aMS", %progbits, 1])
2520 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2521 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2522 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2524 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2525 [elf,2,16,0], [--fatal-warnings],
2526 [.section .text,"axG",@progbits,.foo,comdat])
2527 if test $gcc_cv_as_comdat_group = yes; then
2528 gcc_cv_as_comdat_group_percent=no
2530 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2531 [elf,2,16,0], [--fatal-warnings],
2532 [.section .text,"axG",%progbits,.foo,comdat])
2534 if test x"$ld_is_gold" = xyes; then
2536 elif test $in_tree_ld = yes ; then
2538 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2539 && test $in_tree_ld_is_elf = yes; then
2542 elif echo "$ld_ver" | grep GNU > /dev/null; then
2544 if test 0"$ld_date" -lt 20050308; then
2545 if test -n "$ld_date"; then
2546 # If there was date string, but was earlier than 2005-03-08, fail
2548 elif test "$ld_vers_major" -lt 2; then
2550 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2557 *-*-solaris2.1[1-9]*)
2558 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2559 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2562 # FIXME: Maybe need to refine later when COMDAT group support with
2563 # Sun as is implemented.
2564 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 1688; then
2571 # Assume linkers other than GNU ld don't support COMDAT group.
2577 # Allow overriding the automatic COMDAT group tests above.
2578 AC_ARG_ENABLE(comdat,
2579 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2580 [comdat_group="$enable_comdat"])
2581 if test $comdat_group = no; then
2582 gcc_cv_as_comdat_group=no
2583 gcc_cv_as_comdat_group_percent=no
2585 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2586 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2587 [Define 0/1 if your assembler and linker support COMDAT groups.])
2589 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2590 gcc_cv_as_discriminator,
2594 .loc 1 1 0 discriminator 1],,
2595 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2596 [Define if your assembler supports the .loc discriminator sub-directive.])])
2598 # Thread-local storage - the check is heavily parameterized.
2607 .section ".tdata","awT",@progbits
2610 ldq $27,__tls_get_addr($29) !literal!1
2611 lda $16,foo($29) !tlsgd!1
2612 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2613 ldq $27,__tls_get_addr($29) !literal!2
2614 lda $16,foo($29) !tlsldm!2
2615 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2616 ldq $1,foo($29) !gotdtprel
2617 ldah $2,foo($29) !dtprelhi
2618 lda $3,foo($2) !dtprello
2619 lda $4,foo($29) !dtprel
2620 ldq $1,foo($29) !gottprel
2621 ldah $2,foo($29) !tprelhi
2622 lda $3,foo($2) !tprello
2623 lda $4,foo($29) !tprel'
2626 tls_as_opt=--fatal-warnings
2628 cris-*-*|crisv32-*-*)
2630 .section ".tdata","awT",@progbits
2637 tls_as_opt=--fatal-warnings
2641 .section ".tdata","awT",@progbits
2653 .section ".tdata","awT",@progbits
2657 addil LT%foo-$tls_gdidx$,gp
2658 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2661 addil LT%foo-$tls_ldidx$,gp
2663 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2664 addil LR%foo-$tls_dtpoff$,%ret0
2665 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2667 addil LT%foo-$tls_ieoff$,gp
2668 ldw RT%foo-$tls_ieoff$(%r1),%t2
2671 addil LR%foo-$tls_leoff$,%t1
2672 ldo RR%foo-$tls_leoff$(%r1),%t2'
2675 tls_as_opt=--fatal-warnings
2679 .section ".tdata","awT",%progbits
2692 i[34567]86-*-solaris2.*)
2694 tga_func=___tls_get_addr
2700 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2702 .section .tdata,"awt",@progbits'
2706 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2707 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2711 .section ".tdata","awT",@progbits'
2714 tls_as_opt="--fatal-warnings"
2716 conftest_s="$conftest_s
2720 leal foo@tlsgd(,%ebx,1), %eax
2721 leal foo@tlsldm(%ebx), %eax
2722 leal foo@dtpoff(%eax), %edx
2723 movl foo@gottpoff(%ebx), %eax
2724 subl foo@gottpoff(%ebx), %eax
2725 addl foo@gotntpoff(%ebx), %eax
2726 movl foo@indntpoff, %eax
2727 movl \$foo@tpoff, %eax
2728 subl \$foo@tpoff, %eax
2729 leal foo@ntpoff(%ecx), %eax"
2733 .section ".tdata","awT",@progbits
2737 leaq foo@TLSGD(%rip), %rdi
2738 leaq foo@TLSLD(%rip), %rdi
2739 leaq foo@DTPOFF(%rax), %rdx
2740 movq foo@GOTTPOFF(%rip), %rax
2741 movq $foo@TPOFF, %rax'
2744 tls_as_opt=--fatal-warnings
2748 .section ".tdata","awT",@progbits
2751 addl r16 = @ltoff(@dtpmod(foo#)), gp
2752 addl r17 = @ltoff(@dtprel(foo#)), gp
2753 addl r18 = @ltoff(@tprel(foo#)), gp
2754 addl r19 = @dtprel(foo#), gp
2755 adds r21 = @dtprel(foo#), r13
2756 movl r23 = @dtprel(foo#)
2757 addl r20 = @tprel(foo#), gp
2758 adds r22 = @tprel(foo#), r13
2759 movl r24 = @tprel(foo#)'
2762 tls_as_opt=--fatal-warnings
2766 .section .tdata,"awT",@progbits
2770 addiu $4, $28, %tlsgd(x)
2771 addiu $4, $28, %tlsldm(x)
2772 lui $4, %dtprel_hi(x)
2773 addiu $4, $4, %dtprel_lo(x)
2774 lw $4, %gottprel(x)($28)
2775 lui $4, %tprel_hi(x)
2776 addiu $4, $4, %tprel_lo(x)'
2779 tls_as_opt='-32 --fatal-warnings'
2783 .section .tdata,"awT",@progbits
2788 move.l x@TLSGD(%a5),%a0
2789 move.l x@TLSLDM(%a5),%a0
2790 move.l x@TLSLDO(%a5),%a0
2791 move.l x@TLSIE(%a5),%a0
2792 move.l x@TLSLE(%a5),%a0'
2795 tls_as_opt='--fatal-warnings'
2799 .section ".tdata","awT",@progbits
2807 addi 3,31,ld0@got@tlsgd
2809 addi 3,31,x1@got@tlsld
2812 addis 9,3,x2@dtprel@ha
2813 addi 9,9,x2@dtprel@l
2814 lwz 9,x3@got@tprel(31)
2817 addis 9,2,x2@tprel@ha
2818 addi 9,9,x2@tprel@l'
2821 tls_as_opt="-a32 --fatal-warnings"
2825 .section ".tdata","awT",@progbits
2833 addi 3,2,ld0@got@tlsgd
2839 addi 3,2,x1@got@tlsld
2845 addis 9,3,x2@dtprel@ha
2846 addi 9,9,x2@dtprel@l
2849 ld 9,x3@got@dtprel(2)
2855 tls_as_opt="-a64 --fatal-warnings"
2859 .section ".tdata","awT",@progbits
2868 l %r1,foo@GOTNTPOFF(%r12)
2869 l %r1,0(%r1):tls_load:foo
2870 bas %r14,0(%r1,%r13):tls_gdcall:foo
2871 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2874 tls_as_opt="-m31 --fatal-warnings"
2878 .section ".tdata","awT",@progbits
2886 lg %r1,foo@GOTNTPOFF(%r12)
2887 larl %r1,foo@INDNTPOFF
2888 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2889 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2892 tls_as_opt="-m64 -Aesame --fatal-warnings"
2894 sh-*-* | sh[34]-*-*)
2896 .section ".tdata","awT",@progbits
2906 tls_as_opt=--fatal-warnings
2910 sparc*-sun-solaris2.*)
2912 tga_func=__tls_get_addr
2918 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2920 .section ".tdata",#alloc,#write,#tls'
2925 .section ".tdata","awT",@progbits'
2928 tls_as_opt="-32 --fatal-warnings"
2930 conftest_s="$conftest_s
2933 sethi %tgd_hi22(foo), %o0
2934 add %o0, %tgd_lo10(foo), %o1
2935 add %l7, %o1, %o0, %tgd_add(foo)
2936 call __tls_get_addr, %tgd_call(foo)
2937 sethi %tldm_hi22(foo), %l1
2938 add %l1, %tldm_lo10(foo), %l2
2939 add %l7, %l2, %o0, %tldm_add(foo)
2940 call __tls_get_addr, %tldm_call(foo)
2941 sethi %tldo_hix22(foo), %l3
2942 xor %l3, %tldo_lox10(foo), %l4
2943 add %o0, %l4, %l5, %tldo_add(foo)
2944 sethi %tie_hi22(foo), %o3
2945 add %o3, %tie_lo10(foo), %o3
2946 ld [%l7 + %o3], %o2, %tie_ld(foo)
2947 add %g7, %o2, %o4, %tie_add(foo)
2948 sethi %tle_hix22(foo), %l1
2949 xor %l1, %tle_lox10(foo), %o5
2950 ld [%g7 + %o5], %o1"
2954 .section ".tdata","awT",@progbits
2957 movi a8, foo@TLSFUNC
2958 movi a10, foo@TLSARG
2959 callx8.tls a8, foo@TLSCALL'
2966 if test "x$enable_tls" = xno ; then
2967 : # TLS explicitly disabled.
2968 elif test "x$enable_tls" = xyes ; then
2969 set_have_as_tls=yes # TLS explicitly enabled.
2970 elif test -z "$tls_first_major"; then
2971 : # If we don't have a check, assume no support.
2973 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2974 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2975 [set_have_as_tls=yes])
2978 # TLS was introduced in the Solaris 9 FCS release and backported to
2979 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
2980 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
2981 # ld and GCC don't support any longer.
2983 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
2985 # Check ld and ld.so.1 TLS support.
2986 if echo "$ld_ver" | grep GNU > /dev/null; then
2987 # Assume all interesting versions of GNU ld have TLS support.
2988 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
2992 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
2994 min_tls_ld_vers_minor=280
2996 # Solaris 8/SPARC ld has TLS support since version 1.272.
2997 sparc*-*-solaris2.8)
2998 min_tls_ld_vers_minor=272
3000 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3002 min_tls_ld_vers_minor=374
3004 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3005 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3006 min_tls_ld_vers_minor=343
3009 if test "$ls_vers_major" -gt 1 || \
3010 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3016 AC_MSG_RESULT($ld_tls_support)
3019 save_LDFLAGS="$LDFLAGS"
3023 AC_MSG_CHECKING(alternate thread library)
3025 # TLS support was backported to Solaris 8 patches, but only lives in
3026 # the alternate thread library which became the default in Solaris 9.
3027 # We want to always use that, irrespective of TLS support.
3029 # Take multilib subdir into account. There's no spec to handle
3030 # this. The 64 symlink exists since Solaris 8.
3031 lwp_dir=/usr/lib/lwp
3032 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3033 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3040 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3041 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3042 [Define to the linker flags to use for -pthread.])
3043 AC_MSG_RESULT($lwp_dir)
3045 AC_MSG_CHECKING(library containing $tga_func)
3046 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3047 # (32-bit x86) only lived in libthread, so check for that. Keep
3048 # set_have_as_tls if found, disable if not.
3049 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3050 # Clear LIBS if we cannot support TLS.
3051 if test $set_have_as_tls = no; then
3054 # Always define LIB_TLS_SPEC, even without TLS support.
3055 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3056 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3057 AC_MSG_RESULT($LIBS)
3060 LDFLAGS="$save_LDFLAGS"
3063 if test $set_have_as_tls = yes ; then
3064 AC_DEFINE(HAVE_AS_TLS, 1,
3065 [Define if your assembler and linker support thread-local storage.])
3068 # Target-specific assembler checks.
3070 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3071 gcc_cv_ld_static_dynamic=no
3072 if test $in_tree_ld = yes ; then
3073 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3074 gcc_cv_ld_static_dynamic=yes
3076 elif test x$gcc_cv_ld != x; then
3077 # Check if linker supports -Bstatic/-Bdynamic option
3078 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3079 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3080 gcc_cv_ld_static_dynamic=yes
3083 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3084 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3085 [Define if your linker supports -Bstatic/-Bdynamic option.])
3087 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3089 if test x"$demangler_in_ld" = xyes; then
3090 AC_MSG_CHECKING(linker --demangle support)
3091 gcc_cv_ld_demangle=no
3092 if test $in_tree_ld = yes; then
3093 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3094 gcc_cv_ld_demangle=yes
3096 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3097 # Check if the GNU linker supports --demangle option
3098 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3099 gcc_cv_ld_demangle=yes
3102 if test x"$gcc_cv_ld_demangle" = xyes; then
3103 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3104 [Define if your linker supports --demangle option.])
3106 AC_MSG_RESULT($gcc_cv_ld_demangle)
3110 # All TARGET_ABI_OSF targets.
3111 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3112 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3113 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3116 extbl $3, $2, $3 !lituse_bytoff!1
3117 ldq $2, a($29) !literal!1
3118 ldq $4, b($29) !literal!2
3119 ldq_u $3, 0($2) !lituse_base!1
3120 ldq $27, f($29) !literal!5
3121 jsr $26, ($27), f !lituse_jsr!5
3122 ldah $29, 0($26) !gpdisp!3
3123 lda $0, c($29) !gprel
3124 ldah $1, d($29) !gprelhigh
3125 lda $1, d($1) !gprellow
3126 lda $29, 0($29) !gpdisp!3],,
3127 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3128 [Define if your assembler supports explicit relocations.])])
3129 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3130 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3133 ldq $27, a($29) !literal!1
3134 jsr $26, ($27), a !lituse_jsrdirect!1],,
3135 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3136 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3140 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3141 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3142 [-no-mul-bug-abort], [.text],,
3143 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3144 [Define if your assembler supports the -no-mul-bug-abort option.])])
3148 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3149 [.register %g2, #scratch],,
3150 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3151 [Define if your assembler supports .register.])])
3153 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3155 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3156 [Define if your assembler supports -relax option.])])
3158 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3159 gcc_cv_as_sparc_gotdata_op,,
3165 sethi %gdop_hix22(foo), %g1
3166 xor %g1, %gdop_lox10(foo), %g1
3167 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3168 [if test x$gcc_cv_ld != x \
3169 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3170 if $gcc_cv_ld -v | grep GNU >/dev/null 2>&1; then
3171 if test x$gcc_cv_objdump != x; then
3172 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3173 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3174 gcc_cv_as_sparc_gotdata_op=no
3176 gcc_cv_as_sparc_gotdata_op=yes
3180 gcc_cv_as_sparc_gotdata_op=yes
3184 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3185 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3187 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3188 gcc_cv_as_sparc_ua_pcrel,,
3196 .uaword %r_disp32(foo)],
3197 [if test x$gcc_cv_ld != x \
3198 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3199 gcc_cv_as_sparc_ua_pcrel=yes
3202 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3203 [Define if your assembler and linker support unaligned PC relative relocs.])
3205 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3206 gcc_cv_as_sparc_ua_pcrel_hidden,,
3211 .uaword %r_disp32(foo)
3212 .byte 0x32, 0x33, 0x34
3217 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3218 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3219 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3220 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3221 if $gcc_cv_objdump -R conftest 2> /dev/null \
3222 | grep 'DISP32' > /dev/null 2>&1; then
3225 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3229 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3230 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3231 ]) # unaligned pcrel relocs
3233 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3234 gcc_cv_as_sparc_offsetable_lo10,,
3237 or %g1, %lo(ab) + 12, %g1
3238 or %g1, %lo(ab + 12), %g1],
3239 [if test x$gcc_cv_objdump != x \
3240 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3241 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3242 gcc_cv_as_sparc_offsetable_lo10=yes
3244 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3245 [Define if your assembler supports offsetable %lo().])])
3249 i[34567]86-*-* | x86_64-*-*)
3253 # Full C++ conformance when using a shared libstdc++-v3 requires some
3254 # support from the Cygwin DLL, which in more recent versions exports
3255 # wrappers to aid in interposing and redirecting operators new, delete,
3256 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3257 # are configuring for a version of Cygwin that exports the wrappers.
3258 if test x$host = x$target; then
3259 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3261 # Can't check presence of libc functions during cross-compile, so
3262 # we just have to assume we're building for an up-to-date target.
3263 gcc_ac_cygwin_dll_wrappers=yes
3265 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3266 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3267 [Define if you want to generate code by default that assumes that the
3268 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3271 cygwin* | pe | mingw32*)
3272 # Recent binutils allows the three-operand form of ".comm" on PE. This
3273 # definition is used unconditionally to initialise the default state of
3274 # the target option variable that governs usage of the feature.
3275 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3276 [2,19,52],,[.comm foo,1,32])
3277 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3278 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3279 [Define if your assembler supports specifying the alignment
3280 of objects allocated using the GAS .comm command.])
3281 # Used for DWARF 2 in PE
3282 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3283 gcc_cv_as_ix86_pe_secrel32,
3289 [if test x$gcc_cv_ld != x \
3290 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3291 gcc_cv_as_ix86_pe_secrel32=yes
3294 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3295 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3296 # Test if the assembler supports the extended form of the .section
3297 # directive that specifies section alignment. LTO support uses this,
3298 # but normally only after installation, so we warn but don't fail the
3299 # configure if LTO is enabled but the assembler does not support it.
3300 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3301 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3302 if test x$gcc_cv_as_section_has_align != xyes; then
3303 case ",$enable_languages," in
3305 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3312 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3313 gcc_cv_as_ix86_filds,,,
3314 [filds mem; fists mem],,
3315 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3316 [Define if your assembler uses filds and fists mnemonics.])])
3318 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3319 gcc_cv_as_ix86_fildq,,,
3320 [fildq mem; fistpq mem],,
3321 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3322 [Define if your assembler uses fildq and fistq mnemonics.])])
3324 gcc_GAS_CHECK_FEATURE([cmov syntax],
3325 gcc_cv_as_ix86_cmov_sun_syntax,,,
3326 [cmovl.l %edx, %eax],,
3327 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3328 [Define if your assembler supports the Sun syntax for cmov.])])
3330 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3331 gcc_cv_as_ix86_ffreep,,,
3333 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3334 [Define if your assembler supports the ffreep mnemonic.])])
3336 gcc_GAS_CHECK_FEATURE([.quad directive],
3337 gcc_cv_as_ix86_quad,,,
3339 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3340 [Define if your assembler supports the .quad directive.])])
3342 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3343 gcc_cv_as_ix86_sahf,,,
3346 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3347 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3349 gcc_GAS_CHECK_FEATURE([swap suffix],
3350 gcc_cv_as_ix86_swap,,,
3351 [movl.s %esp, %ebp],,
3352 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3353 [Define if your assembler supports the swap suffix.])])
3355 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3356 gcc_cv_as_ix86_diff_sect_delta,,,
3364 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3365 [Define if your assembler supports the subtraction of symbols in different sections.])])
3367 # These two are used unconditionally by i386.[ch]; it is to be defined
3368 # to 1 if the feature is present, 0 otherwise.
3369 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3370 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3376 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3377 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3378 [Define true if the assembler supports '.long foo@GOTOFF'.])
3380 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3381 gcc_cv_as_ix86_rep_lock_prefix,,,
3383 lock addl %edi, (%eax,%esi)
3384 lock orl $0, (%esp)],,
3385 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3386 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3391 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3392 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3394 addl r15 = @ltoffx(x#), gp
3396 ld8.mov r16 = [[r15]], x#],,
3397 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3398 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3404 *-*-aix*) conftest_s=' .machine "pwr5"
3408 gcc_GAS_CHECK_FEATURE([.machine directive support],
3409 gcc_cv_as_machine_directive,,,
3410 [ .machine ppc7400])
3411 if test x$gcc_cv_as_machine_directive != xyes; then
3412 echo "*** This target requires an assembler supporting \".machine\"" >&2
3413 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3414 test x$build = x$target && exit 1
3418 *) conftest_s=' .machine power4
3423 gcc_GAS_CHECK_FEATURE([mfcr field support],
3424 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3426 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3427 [Define if your assembler supports mfcr field.])])
3430 *-*-aix*) conftest_s=' .machine "pwr5"
3433 *) conftest_s=' .machine power5
3438 gcc_GAS_CHECK_FEATURE([popcntb support],
3439 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3441 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3442 [Define if your assembler supports popcntb field.])])
3445 *-*-aix*) conftest_s=' .machine "pwr5x"
3448 *) conftest_s=' .machine power5
3453 gcc_GAS_CHECK_FEATURE([fp round support],
3454 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3456 [AC_DEFINE(HAVE_AS_FPRND, 1,
3457 [Define if your assembler supports fprnd.])])
3460 *-*-aix*) conftest_s=' .machine "pwr6"
3463 *) conftest_s=' .machine power6
3468 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3469 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3471 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3472 [Define if your assembler supports mffgpr and mftgpr.])])
3475 *-*-aix*) conftest_s=' .csect .text[[PR]]
3477 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3481 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3482 *) conftest_s=' .text
3484 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3487 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3488 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3490 [AC_DEFINE(HAVE_AS_REL16, 1,
3491 [Define if your assembler supports R_PPC_REL16 relocs.])])
3494 *-*-aix*) conftest_s=' .machine "pwr6"
3497 *) conftest_s=' .machine power6
3502 gcc_GAS_CHECK_FEATURE([compare bytes support],
3503 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3505 [AC_DEFINE(HAVE_AS_CMPB, 1,
3506 [Define if your assembler supports cmpb.])])
3509 *-*-aix*) conftest_s=' .machine "pwr6"
3512 *) conftest_s=' .machine power6
3517 gcc_GAS_CHECK_FEATURE([decimal float support],
3518 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3520 [AC_DEFINE(HAVE_AS_DFP, 1,
3521 [Define if your assembler supports DFP instructions.])])
3524 *-*-aix*) conftest_s=' .machine "pwr7"
3527 *) conftest_s=' .machine power7
3532 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3533 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3535 [AC_DEFINE(HAVE_AS_VSX, 1,
3536 [Define if your assembler supports VSX instructions.])])
3539 *-*-aix*) conftest_s=' .machine "pwr7"
3542 *) conftest_s=' .machine power7
3547 gcc_GAS_CHECK_FEATURE([popcntd support],
3548 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3550 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3551 [Define if your assembler supports POPCNTD instructions.])])
3554 *-*-aix*) conftest_s=' .csect .text[[PR]]
3556 *) conftest_s=' .text
3560 gcc_GAS_CHECK_FEATURE([lwsync support],
3561 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3563 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3564 [Define if your assembler supports LWSYNC instructions.])])
3567 *-*-aix*) conftest_s=' .machine "476"
3570 *) conftest_s=' .machine "476"
3575 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3576 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3578 [AC_DEFINE(HAVE_AS_DCI, 1,
3579 [Define if your assembler supports the DCI/ICI instructions.])])
3581 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3582 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3583 [.gnu_attribute 4,1],,
3584 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3585 [Define if your assembler supports .gnu_attribute.])])
3587 gcc_GAS_CHECK_FEATURE([tls marker support],
3588 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3589 [ bl __tls_get_addr(x@tlsgd)],,
3590 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3591 [Define if your assembler supports arg info for __tls_get_addr.])])
3595 gcc_GAS_CHECK_FEATURE([.ref support],
3596 gcc_cv_as_aix_ref, [2.21.0],,
3597 [ .csect stuff[[rw]]
3603 [AC_DEFINE(HAVE_AS_REF, 1,
3604 [Define if your assembler supports .ref])])
3610 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3611 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3612 [ lw $4,%gp_rel(foo)($4)],,
3613 [if test x$target_cpu_default = x
3614 then target_cpu_default=MASK_EXPLICIT_RELOCS
3615 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3617 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3618 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3619 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3620 [Define if the assembler understands -mno-shared.])])
3622 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3623 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3624 [.gnu_attribute 4,1],,
3625 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3626 [Define if your assembler supports .gnu_attribute.])])
3628 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3629 gcc_cv_as_mips_dtprelword, [2,18,0],,
3630 [.section .tdata,"awT",@progbits
3634 .dtprelword x+0x8000],,
3635 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3636 [Define if your assembler supports .dtprelword.])])
3638 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3639 gcc_cv_as_ld_jalr_reloc=no
3640 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3641 if test $in_tree_ld = yes ; then
3642 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3643 && test $in_tree_ld_is_elf = yes; then
3644 gcc_cv_as_ld_jalr_reloc=yes
3646 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3647 echo ' .ent x' > conftest.s
3648 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3649 echo ' ld $25,%call16(y)($28)' >> conftest.s
3650 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3651 echo '1: jalr $25' >> conftest.s
3652 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3653 echo '1: jalr $25' >> conftest.s
3654 echo ' .end x' >> conftest.s
3655 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3656 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3657 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3658 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3659 gcc_cv_as_ld_jalr_reloc=yes
3665 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3666 if test x$target_cpu_default = x; then
3667 target_cpu_default=MASK_RELAX_PIC_CALLS
3669 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3672 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3674 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3675 [gcc_cv_ld_mips_personality_relaxation],
3676 [gcc_cv_ld_mips_personality_relaxation=no
3677 if test $in_tree_ld = yes ; then
3678 if test "$gcc_cv_gld_major_version" -eq 2 \
3679 -a "$gcc_cv_gld_minor_version" -ge 21 \
3680 -o "$gcc_cv_gld_major_version" -gt 2; then
3681 gcc_cv_ld_mips_personality_relaxation=yes
3683 elif test x$gcc_cv_as != x \
3684 -a x$gcc_cv_ld != x \
3685 -a x$gcc_cv_readelf != x ; then
3686 cat > conftest.s <<EOF
3688 .cfi_personality 0x80,indirect_ptr
3695 .section .data,"aw",@progbits
3699 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3700 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3701 if $gcc_cv_readelf -d conftest 2>&1 \
3702 | grep TEXTREL > /dev/null 2>&1; then
3704 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3705 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3708 gcc_cv_ld_mips_personality_relaxation=yes
3712 rm -f conftest.s conftest.o conftest])
3713 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3714 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3715 [Define if your linker can relax absolute .eh_frame personality
3716 pointers into PC-relative form.])
3721 # Mips and HP-UX need the GNU assembler.
3722 # Linux on IA64 might be able to use the Intel assembler.
3725 mips*-*-* | *-*-hpux* )
3726 if test x$gas_flag = xyes \
3727 || test x"$host" != x"$build" \
3728 || test ! -x "$gcc_cv_as" \
3729 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3732 echo "*** This configuration requires the GNU assembler" >&2
3738 # ??? Not all targets support dwarf2 debug_line, even within a version
3739 # of gas. Moreover, we need to emit a valid instruction to trigger any
3740 # info to the output file. So, as supported targets are added to gas 2.11,
3741 # add some instruction here to (also) show we expect this might work.
3742 # ??? Once 2.11 is released, probably need to add first known working
3743 # version to the per-target configury.
3745 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3746 | x86_64*-*-* | hppa*-*-* | arm*-*-* \
3747 | xstormy16*-*-* | cris-*-* | crisv32-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \
3748 | spu-*-* | fido*-*-* | m32c-*-*)
3751 ia64*-*-* | s390*-*-*)
3758 if test x"$insn" != x; then
3760 .file 1 \"conftest.s\"
3763 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3764 gcc_cv_as_dwarf2_debug_line,
3765 [elf,2,11,0],, [$conftest_s],
3766 [if test x$gcc_cv_objdump != x \
3767 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3768 | grep debug_line > /dev/null 2>&1; then
3769 gcc_cv_as_dwarf2_debug_line=yes
3772 # The .debug_line file table must be in the exact order that
3773 # we specified the files, since these indices are also used
3774 # by DW_AT_decl_file. Approximate this test by testing if
3775 # the assembler bitches if the same index is assigned twice.
3776 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3777 gcc_cv_as_dwarf2_file_buggy,,,
3781 if test $gcc_cv_as_dwarf2_debug_line = yes \
3782 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3783 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3784 [Define if your assembler supports dwarf2 .file/.loc directives,
3785 and preserves file table indices exactly as given.])
3788 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3789 gcc_cv_as_gdwarf2_flag,
3790 [elf,2,11,0], [--gdwarf2], [$insn],,
3791 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3792 [Define if your assembler supports the --gdwarf2 option.])])
3794 gcc_GAS_CHECK_FEATURE([--gstabs option],
3795 gcc_cv_as_gstabs_flag,
3796 [elf,2,11,0], [--gstabs], [$insn],
3797 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3798 # and warns about it, but still exits successfully. So check for
3800 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3802 else gcc_cv_as_gstabs_flag=yes
3804 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3805 [Define if your assembler supports the --gstabs option.])])
3807 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3808 gcc_cv_as_debug_prefix_map_flag,
3809 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3810 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3811 [Define if your assembler supports the --debug-prefix-map option.])])
3814 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3817 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3818 [Define if your assembler supports .lcomm with an alignment field.])])
3820 AC_ARG_ENABLE(gnu-unique-object,
3821 [ --enable-gnu-unique-object enable the use of the @gnu_unique_object ELF extension on
3823 [case $enable_gnu_unique_object in
3825 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
3826 Valid choices are 'yes' and 'no'.]) ;;
3828 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
3830 [.type foo, @gnu_unique_object],,
3831 # Also check for ld.so support, i.e. glibc 2.11 or higher.
3832 [[if test x$host = x$build -a x$host = x$target &&
3833 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
3834 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
3835 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
3836 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
3837 if test "$glibcnum" -ge 2011 ; then
3838 enable_gnu_unique_object=yes
3841 if test x$enable_gnu_unique_object = xyes; then
3842 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
3843 [Define if your assembler supports @gnu_unique_object.])
3846 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3847 [gcc_cv_as_line_zero],
3848 [gcc_cv_as_line_zero=no
3849 if test $in_tree_gas = yes; then
3850 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3851 elif test "x$gcc_cv_as" != x; then
3852 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3853 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3854 test "x`cat conftest.out`" = x
3856 gcc_cv_as_line_zero=yes
3858 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3859 cat conftest.s >&AS_MESSAGE_LOG_FD
3860 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3861 cat conftest.out >&AS_MESSAGE_LOG_FD
3863 rm -f conftest.o conftest.s conftest.out
3865 if test "x$gcc_cv_as_line_zero" = xyes; then
3866 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3867 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3870 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3871 gcc_cv_ld_eh_frame_hdr=no
3872 if test $in_tree_ld = yes ; then
3873 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3874 && test $in_tree_ld_is_elf = yes; then
3875 gcc_cv_ld_eh_frame_hdr=yes
3877 elif test x$gcc_cv_ld != x; then
3878 # Check if linker supports --eh-frame-hdr option
3879 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3880 gcc_cv_ld_eh_frame_hdr=yes
3883 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3884 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3885 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3886 [Define if your linker supports --eh-frame-hdr option.])
3888 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3890 AC_MSG_CHECKING(linker position independent executable support)
3892 if test $in_tree_ld = yes ; then
3893 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3894 && test $in_tree_ld_is_elf = yes; then
3897 elif test x$gcc_cv_ld != x; then
3898 # Check if linker supports -pie option
3899 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3903 if test x"$gcc_cv_ld_pie" = xyes; then
3904 AC_DEFINE(HAVE_LD_PIE, 1,
3905 [Define if your linker supports -pie option.])
3907 AC_MSG_RESULT($gcc_cv_ld_pie)
3909 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3910 gcc_cv_ld_eh_gc_sections=no
3911 if test $in_tree_ld = yes ; then
3912 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3913 && test $in_tree_ld_is_elf = yes; then
3914 gcc_cv_ld_eh_gc_sections=yes
3916 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3917 cat > conftest.s <<EOF
3920 .type _start, @function
3923 .size _start, .-_start
3924 .section .text.foo,"ax",@progbits
3925 .type foo, @function
3929 .section .gcc_except_table.foo,"a",@progbits
3932 .section .eh_frame,"a",@progbits
3935 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3936 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3937 | grep "gc-sections option ignored" > /dev/null; then
3938 gcc_cv_ld_eh_gc_sections=no
3939 elif $gcc_cv_objdump -h conftest 2> /dev/null \
3940 | grep gcc_except_table > /dev/null; then
3941 gcc_cv_ld_eh_gc_sections=yes
3942 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3943 if test x$gcc_cv_as_comdat_group != xyes; then
3944 gcc_cv_ld_eh_gc_sections=no
3945 cat > conftest.s <<EOF
3948 .type _start, @function
3951 .size _start, .-_start
3952 .section .gnu.linkonce.t.foo,"ax",@progbits
3953 .type foo, @function
3957 .section .gcc_except_table.foo,"a",@progbits
3960 .section .eh_frame,"a",@progbits
3963 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3964 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3965 | grep "gc-sections option ignored" > /dev/null; then
3966 gcc_cv_ld_eh_gc_sections=no
3967 elif $gcc_cv_objdump -h conftest 2> /dev/null \
3968 | grep gcc_except_table > /dev/null; then
3969 gcc_cv_ld_eh_gc_sections=yes
3975 rm -f conftest.s conftest.o conftest
3979 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3980 gcc_cv_ld_eh_gc_sections=no
3983 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3984 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3985 [Define if your linker supports garbage collection of
3986 sections in presence of EH frames.])
3988 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3994 AC_CACHE_CHECK(linker --as-needed support,
3995 gcc_cv_ld_as_needed,
3996 [gcc_cv_ld_as_needed=no
3997 if test $in_tree_ld = yes ; then
3998 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3999 && test $in_tree_ld_is_elf = yes; then
4000 gcc_cv_ld_as_needed=yes
4002 elif test x$gcc_cv_ld != x; then
4003 # Check if linker supports --as-needed and --no-as-needed options
4004 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4005 gcc_cv_ld_as_needed=yes
4009 if test x"$gcc_cv_ld_as_needed" = xyes; then
4010 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4011 [Define if your linker supports --as-needed and --no-as-needed options.])
4014 case "$target:$tm_file" in
4015 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4016 AC_CACHE_CHECK(linker support for omitting dot symbols,
4017 gcc_cv_ld_no_dot_syms,
4018 [gcc_cv_ld_no_dot_syms=no
4019 if test $in_tree_ld = yes ; then
4020 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4021 gcc_cv_ld_no_dot_syms=yes
4023 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4024 cat > conftest1.s <<EOF
4028 cat > conftest2.s <<EOF
4029 .section ".opd","aw"
4034 .quad .LEfoo,.TOC.@tocbase,0
4040 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4041 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4042 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4043 gcc_cv_ld_no_dot_syms=yes
4045 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4048 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4049 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4050 [Define if your PowerPC64 linker only needs function descriptor syms.])
4053 AC_CACHE_CHECK(linker large toc support,
4054 gcc_cv_ld_large_toc,
4055 [gcc_cv_ld_large_toc=no
4056 if test $in_tree_ld = yes ; then
4057 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4058 gcc_cv_ld_large_toc=yes
4060 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4061 cat > conftest.s <<EOF
4062 .section ".tbss","awT",@nobits
4068 addis 9,13,ie0@got@tprel@ha
4069 ld 9,ie0@got@tprel@l(9)
4071 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4072 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4073 gcc_cv_ld_large_toc=yes
4075 rm -f conftest conftest.o conftest.s
4078 if test x"$gcc_cv_ld_large_toc" = xyes; then
4079 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4080 [Define if your PowerPC64 linker supports a large TOC.])
4085 AC_CACHE_CHECK(linker --build-id support,
4087 [gcc_cv_ld_buildid=no
4088 if test $in_tree_ld = yes ; then
4089 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4090 "$gcc_cv_gld_minor_version" -ge 18 -o \
4091 "$gcc_cv_gld_major_version" -gt 2 \
4092 && test $in_tree_ld_is_elf = yes; then
4093 gcc_cv_ld_buildid=yes
4095 elif test x$gcc_cv_ld != x; then
4096 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4097 gcc_cv_ld_buildid=yes
4100 if test x"$gcc_cv_ld_buildid" = xyes; then
4101 AC_DEFINE(HAVE_LD_BUILDID, 1,
4102 [Define if your linker supports --build-id.])
4105 AC_ARG_ENABLE(linker-build-id,
4106 [ --enable-linker-build-id
4107 compiler will always pass --build-id to linker],
4109 enable_linker_build_id=no)
4111 if test x"$enable_linker_build_id" = xyes; then
4112 if test x"$gcc_cv_ld_buildid" = xyes; then
4113 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4114 [Define if gcc should always pass --build-id to linker.])
4116 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4120 # In binutils 2.21, GNU ld gained support for new emulations fully
4121 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4122 AC_CACHE_CHECK(linker *_sol2 emulation support,
4123 gcc_cv_ld_sol2_emulation,
4124 [gcc_cv_ld_sol2_emulation=no
4125 if test $in_tree_ld = yes ; then
4126 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4127 "$gcc_cv_gld_minor_version" -ge 21 -o \
4128 "$gcc_cv_gld_major_version" -gt 2 \
4129 && test $in_tree_ld_is_elf = yes; then
4130 gcc_cv_ld_sol2_emulation=yes
4132 elif test x$gcc_cv_ld != x; then
4133 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4134 grep _sol2 > /dev/null; then
4135 gcc_cv_ld_sol2_emulation=yes
4138 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4139 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4140 [Define if your linker supports the *_sol2 emulations.])
4143 AC_CACHE_CHECK(linker --sysroot support,
4145 [gcc_cv_ld_sysroot=no
4146 if test $in_tree_ld = yes ; then
4147 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4148 gcc_cv_ld_sysroot=yes
4150 elif test x$gcc_cv_ld != x; then
4151 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4152 gcc_cv_ld_sysroot=yes
4155 if test x"$gcc_cv_ld_sysroot" = xyes; then
4156 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4157 [Define if your linker supports --sysroot.])
4160 if test x$with_sysroot = x && test x$host = x$target \
4161 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4162 && test "$prefix" != "NONE"; then
4163 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4164 [Define to PREFIX/include if cpp should also search that directory.])
4167 # Test for stack protector support in target C library.
4168 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4169 gcc_cv_libc_provides_ssp,
4170 [gcc_cv_libc_provides_ssp=no
4172 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4173 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4174 if test "x$with_headers" != x; then
4175 glibc_header_dir=$with_headers
4176 elif test "x$with_sysroot" = x; then
4177 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4178 elif test "x$with_build_sysroot" != "x"; then
4179 glibc_header_dir="${with_build_sysroot}/usr/include"
4180 elif test "x$with_sysroot" = xyes; then
4181 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4183 glibc_header_dir="${with_sysroot}/usr/include"
4186 glibc_header_dir=/usr/include
4188 [# glibc 2.4 and later provides __stack_chk_fail and
4189 # either __stack_chk_guard, or TLS access to stack guard canary.
4190 if test -f $glibc_header_dir/features.h \
4191 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4192 $glibc_header_dir/features.h > /dev/null; then
4193 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4194 $glibc_header_dir/features.h > /dev/null; then
4195 gcc_cv_libc_provides_ssp=yes
4196 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4197 $glibc_header_dir/features.h > /dev/null \
4198 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4199 $glibc_header_dir/features.h > /dev/null; then
4200 gcc_cv_libc_provides_ssp=yes
4201 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4202 $glibc_header_dir/features.h > /dev/null && \
4203 test -f $glibc_header_dir/bits/uClibc_config.h && \
4204 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4205 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
4206 gcc_cv_libc_provides_ssp=yes
4211 # Avoid complicated tests (see
4212 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4213 # simply assert that glibc does provide this, which is true for all
4214 # realistically usable GNU/Hurd configurations.
4215 gcc_cv_libc_provides_ssp=yes;;
4216 *-*-darwin* | *-*-freebsd*)
4217 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4218 [echo "no __stack_chk_fail on this target"])
4220 *) gcc_cv_libc_provides_ssp=no ;;
4223 if test x$gcc_cv_libc_provides_ssp = xyes; then
4224 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4225 [Define if your target C library provides stack protector support])
4228 # Check if TFmode long double should be used by default or not.
4229 # Some glibc targets used DFmode long double, but with glibc 2.4
4230 # and later they can use TFmode.
4232 powerpc*-*-linux* | \
4237 AC_ARG_WITH(long-double-128,
4238 [ --with-long-double-128 Use 128-bit long double by default.],
4239 gcc_cv_target_ldbl128="$with_long_double_128",
4240 [[gcc_cv_target_ldbl128=no
4241 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4242 if test "x$with_sysroot" = x; then
4243 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4244 elif test "x$with_build_sysroot" != "x"; then
4245 glibc_header_dir="${with_build_sysroot}/usr/include"
4246 elif test "x$with_sysroot" = xyes; then
4247 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4249 glibc_header_dir="${with_sysroot}/usr/include"
4252 glibc_header_dir=/usr/include
4254 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4255 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4256 && gcc_cv_target_ldbl128=yes
4260 if test x$gcc_cv_target_ldbl128 = xyes; then
4261 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4262 [Define if TFmode long double should be the default])
4265 # Find out what GC implementation we want, or may, use.
4267 [ --with-gc={page,zone} choose the garbage collection mechanism to use
4275 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4278 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4283 echo "Using $GGC for garbage collection."
4285 # Libraries to use on the host. This will normally be set by the top
4286 # level Makefile. Here we simply capture the value for our Makefile.
4287 if test -z "${HOST_LIBS+set}"; then
4292 # Use the system's zlib library.
4294 zlibinc="-I\$(srcdir)/../zlib"
4295 AC_ARG_WITH(system-zlib,
4296 [ --with-system-zlib use installed libz],
4303 dnl Very limited version of automake's enable-maintainer-mode
4305 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4306 dnl maintainer-mode is disabled by default
4307 AC_ARG_ENABLE(maintainer-mode,
4308 [ --enable-maintainer-mode
4309 enable make rules and dependencies not useful
4310 (and sometimes confusing) to the casual installer],
4311 maintainer_mode=$enableval,
4314 AC_MSG_RESULT($maintainer_mode)
4316 if test "$maintainer_mode" = "yes"; then
4327 # Make empty files to contain the specs and options for each language.
4328 # Then add #include lines to for a compiler that has specs and/or options.
4334 # These (without "all_") are set in each config-lang.in.
4335 # `language' must be a single word so is spelled singularly.
4338 all_outputs='Makefile gccbug'
4339 # List of language makefile fragments.
4341 # Additional files for gengtype
4342 all_gtfiles="$target_gtfiles"
4344 # These are the languages that are set in --enable-languages,
4345 # and are available in the GCC tree.
4346 all_selected_languages=
4348 # Add the language fragments.
4349 # Languages are added via two mechanisms. Some information must be
4350 # recorded in makefile variables, these are defined in config-lang.in.
4351 # We accumulate them and plug them into the main Makefile.
4352 # The other mechanism is a set of hooks for each of the main targets
4353 # like `clean', `install', etc.
4355 language_hooks="Make-hooks"
4357 for lang in ${srcdir}/*/config-lang.in
4360 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4362 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4363 if test "x$lang_alias" = x
4365 echo "$lang doesn't set \$language." 1>&2
4368 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4369 subdirs="$subdirs $subdir"
4371 # $gcc_subdir is where the gcc integration files are to be found
4372 # for a language, both for internal compiler purposes (compiler
4373 # sources implementing front-end to GCC tree converters), and for
4374 # build infrastructure purposes (Make-lang.in, etc.)
4376 # This will be <subdir> (relative to $srcdir) if a line like
4377 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4378 # is found in <langdir>/config-lang.in, and will remain <langdir>
4381 # Except for the language alias (fetched above), the regular
4382 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4383 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4384 # only this and the language alias.
4386 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4387 if [ "$gcc_subdir" = "" ]; then
4388 gcc_subdir="$subdir"
4391 case ",$enable_languages," in
4393 all_selected_languages="$all_selected_languages $lang_alias"
4394 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4395 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4407 . ${srcdir}/$gcc_subdir/config-lang.in
4408 if test "x$language" = x
4410 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4415 case ",$enable_languages," in
4418 for i in $subdir_requires; do
4419 test -f "${srcdir}/$i/config-lang.in" && continue
4427 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4428 if test -f $srcdir/$gcc_subdir/lang.opt; then
4429 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4431 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4432 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4434 all_languages="$all_languages $language"
4435 all_compilers="$all_compilers $compilers"
4436 all_outputs="$all_outputs $outputs"
4437 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4438 case ",$enable_languages," in
4440 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4442 AC_SUBST(enable_lto)
4443 # LTO needs to speak the platform's object file format, and has a
4444 # number of implementations of the required binary file access APIs.
4445 # ELF is the most common, and default. We only link libelf if ELF
4446 # is indeed the selected format.
4447 LTO_BINARY_READER=${lto_binary_reader}
4448 LTO_USE_LIBELF=-lelf
4449 if test "x$lto_binary_reader" != "xlto-elf" ; then
4452 AC_SUBST(LTO_BINARY_READER)
4453 AC_SUBST(LTO_USE_LIBELF)
4459 # Pick up gtfiles for c
4461 . ${srcdir}/c-config-lang.in
4462 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4465 for language in $all_selected_languages
4467 check_languages="$check_languages check-$language"
4470 # We link each language in with a set of hooks, reached indirectly via
4471 # lang.${target}. Only do so for selected languages.
4475 target_list="all.cross start.encap rest.encap tags \
4476 install-common install-man install-info install-pdf install-html dvi \
4477 pdf html uninstall info man srcextra srcman srcinfo \
4478 mostlyclean clean distclean maintainer-clean install-plugin"
4480 for t in $target_list
4483 for lang in $all_selected_languages
4487 echo "lang.$t: $x" >> Make-hooks
4496 echo "dir ." > .gdbinit
4497 echo "dir ${srcdir}" >> .gdbinit
4498 if test x$gdb_needs_out_file_path = xyes
4500 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4502 if test "x$subdirs" != x; then
4505 echo "dir ${srcdir}/$s" >> .gdbinit
4508 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4510 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4511 AC_SUBST(gcc_tooldir)
4514 # Find a directory in which to install a shared libgcc.
4516 AC_ARG_ENABLE(version-specific-runtime-libs,
4517 [ --enable-version-specific-runtime-libs
4518 specify that runtime libraries should be
4519 installed in a compiler-specific directory])
4521 AC_ARG_WITH(slibdir,
4522 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
4523 slibdir="$with_slibdir",
4524 if test "${enable_version_specific_runtime_libs+set}" = set; then
4525 slibdir='$(libsubdir)'
4526 elif test "$host" != "$target"; then
4527 slibdir='$(build_tooldir)/lib'
4533 # Substitute configuration variables
4536 AC_SUBST(all_compilers)
4537 AC_SUBST(all_gtfiles)
4538 AC_SUBST(all_lang_makefrags)
4539 AC_SUBST(all_languages)
4540 AC_SUBST(all_selected_languages)
4541 AC_SUBST(build_exeext)
4542 AC_SUBST(build_install_headers_dir)
4543 AC_SUBST(build_xm_file_list)
4544 AC_SUBST(build_xm_include_list)
4545 AC_SUBST(build_xm_defines)
4546 AC_SUBST(build_file_translate)
4547 AC_SUBST(check_languages)
4548 AC_SUBST(cpp_install_dir)
4549 AC_SUBST(xmake_file)
4550 AC_SUBST(tmake_file)
4551 AC_SUBST(TM_ENDIAN_CONFIG)
4552 AC_SUBST(TM_MULTILIB_CONFIG)
4553 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4554 AC_SUBST(extra_gcc_objs)
4555 AC_SUBST(user_headers_inc_next_pre)
4556 AC_SUBST(user_headers_inc_next_post)
4557 AC_SUBST(extra_headers_list)
4558 AC_SUBST(extra_objs)
4559 AC_SUBST(extra_parts)
4560 AC_SUBST(extra_passes)
4561 AC_SUBST(extra_programs)
4562 AC_SUBST(float_h_file)
4563 AC_SUBST(gcc_config_arguments)
4564 AC_SUBST(gcc_gxx_include_dir)
4565 AC_SUBST(host_exeext)
4566 AC_SUBST(host_xm_file_list)
4567 AC_SUBST(host_xm_include_list)
4568 AC_SUBST(host_xm_defines)
4569 AC_SUBST(out_host_hook_obj)
4571 AC_SUBST(lang_opt_files)
4572 AC_SUBST(lang_specs_files)
4573 AC_SUBST(lang_tree_files)
4574 AC_SUBST(local_prefix)
4576 AC_SUBST(objc_boehm_gc)
4578 AC_SUBST(out_object_file)
4579 AC_SUBST(thread_file)
4580 AC_SUBST(tm_file_list)
4581 AC_SUBST(tm_include_list)
4582 AC_SUBST(tm_defines)
4583 AC_SUBST(tm_p_file_list)
4584 AC_SUBST(tm_p_include_list)
4585 AC_SUBST(xm_file_list)
4586 AC_SUBST(xm_include_list)
4587 AC_SUBST(xm_defines)
4588 AC_SUBST(use_gcc_stdint)
4589 AC_SUBST(c_target_objs)
4590 AC_SUBST(cxx_target_objs)
4591 AC_SUBST(fortran_target_objs)
4592 AC_SUBST(target_cpu_default)
4594 AC_SUBST_FILE(language_hooks)
4597 if test x${build} = x${host} ; then
4598 if test x${host} = x${target} ; then
4599 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4601 echo "Links are now set up to build a cross-compiler" 1>&2
4602 echo " from ${host} to ${target}." 1>&2
4605 if test x${host} = x${target} ; then
4606 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4607 echo " for ${target}." 1>&2
4609 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4610 echo " from ${host} to ${target}." 1>&2
4614 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4615 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4617 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4618 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4620 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4621 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4622 if test "x${CLOOGLIBS}" != "x" ; then
4623 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4626 AC_ARG_VAR(LIBELFLIBS,[How to link libelf])
4627 AC_ARG_VAR(LIBELFINC,[How to find libelf include files])
4628 if test "x${LIBELFLIBS}" != "x" ; then
4629 AC_DEFINE(HAVE_libelf, 1, [Define if libelf is in use.])
4632 # Check for plugin support
4633 AC_ARG_ENABLE(plugin,
4634 [ --enable-plugin enable plugin support],
4635 enable_plugin=$enableval,
4636 enable_plugin=yes; default_plugin=yes)
4642 if test x$build = x$host; then
4643 export_sym_check="nm${exeext} -g"
4644 elif test x$host = x$target; then
4645 export_sym_check="$gcc_cv_nm -g"
4651 if test x$build = x$host; then
4652 export_sym_check="objdump${exeext} -T"
4653 elif test x$host = x$target; then
4654 export_sym_check="$gcc_cv_objdump -T"
4661 if test x"$enable_plugin" = x"yes"; then
4663 AC_MSG_CHECKING([for exported symbols])
4664 if test "x$export_sym_check" != x; then
4665 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4666 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4667 if $export_sym_check conftest | grep foobar > /dev/null; then
4668 : # No need to use a flag
4669 AC_MSG_RESULT([yes])
4671 AC_MSG_RESULT([yes])
4672 AC_MSG_CHECKING([for -rdynamic])
4673 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
4674 if $export_sym_check conftest | grep foobar > /dev/null; then
4676 pluginlibs="-rdynamic"
4681 AC_MSG_RESULT([$plugin_rdynamic])
4684 AC_MSG_RESULT([unable to check])
4689 AC_SEARCH_LIBS([dlopen], [dl])
4690 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
4691 pluginlibs="$pluginlibs -ldl"
4695 # Check that we can build shared objects with -fPIC -shared
4696 saved_LDFLAGS="$LDFLAGS"
4699 LDFLAGS="$LDFLAGS -fPIC -shared -undefined dynamic_lookup"
4702 LDFLAGS="$LDFLAGS -fPIC -shared"
4705 AC_MSG_CHECKING([for -fPIC -shared])
4707 [extern int X;],[return X == 0;],
4708 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
4709 [AC_MSG_RESULT([no]); have_pic_shared=no])
4710 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
4714 LDFLAGS="$saved_LDFLAGS"
4716 # If plugin support had been requested but not available, fail.
4717 if test x"$enable_plugin" = x"no" ; then
4718 if test x"$default_plugin" != x"yes"; then
4720 Building GCC with plugin support requires a host that supports
4721 -fPIC, -shared, -ldl and -rdynamic.])
4726 AC_SUBST(pluginlibs)
4727 AC_SUBST(enable_plugin)
4728 if test x"$enable_plugin" = x"yes"; then
4729 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
4732 # Configure the subdirectories
4733 # AC_CONFIG_SUBDIRS($subdirs)
4735 # Create the Makefile
4736 # and configure language subdirectories
4737 AC_CONFIG_FILES($all_outputs)
4739 AC_CONFIG_COMMANDS([default],
4741 case ${CONFIG_HEADERS} in
4742 *auto-host.h:config.in*)
4745 # Make sure all the subdirs exist.
4746 for d in $subdirs doc build c-family
4748 test -d $d || mkdir $d
4751 [subdirs='$subdirs'])