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 # Build with intermodule optimisations
758 AC_ARG_ENABLE(intermodule,
759 [ --enable-intermodule build the compiler in one step],
760 [case ${enable_intermodule} in
761 yes) onestep="-onestep";;
767 ACX_PKGVERSION([GCC])
768 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
770 # Sanity check enable_languages in case someone does not run the toplevel
771 # configure # script.
772 AC_ARG_ENABLE(languages,
773 [ --enable-languages=LIST specify which front-ends to build],
774 [case ,${enable_languages}, in
776 # go safe -- we cannot be much sure without the toplevel
778 # analysis of which target libs are present and usable
782 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
787 enable_languages=c,${enable_languages}
790 [enable_languages=c])
792 AC_ARG_WITH(multilib-list,
793 [ --with-multilib-list Select multilibs (SH only)],
795 with_multilib_list=default)
797 # -------------------------
798 # Checks for other programs
799 # -------------------------
803 # Find some useful tools
805 # We need awk to create options.c and options.h.
806 # Bail out if it's missing.
808 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
816 # By default, the Darwin ranlib will not treat common symbols as
817 # definitions when building the archive table of contents. Other
818 # ranlibs do that; pass an option to the Darwin ranlib that makes
819 # it behave similarly.
825 AC_SUBST(ranlib_flags)
829 # See if cmp has --ignore-initial.
830 gcc_AC_PROG_CMP_IGNORE_INITIAL
832 # See if we have the mktemp command.
833 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
835 # See if makeinfo has been installed and is modern enough
836 # that we can use it.
837 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
838 [GNU texinfo.* \([0-9][0-9.]*\)],
839 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
840 if test $gcc_cv_prog_makeinfo_modern = no; then
842 *** Makeinfo is missing or too old.
843 *** Info documentation will not be built.])
850 # Is pod2man recent enough to regenerate manpages?
851 AC_MSG_CHECKING([for recent Pod::Man])
852 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
854 GENERATED_MANPAGES=generated-manpages
859 AC_SUBST(GENERATED_MANPAGES)
861 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
864 dnl Don't use AC_PROG_LEX; we insist on flex.
865 dnl LEXLIB is not useful in gcc.
866 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
869 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
871 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
872 # check for build == host before using them.
875 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
876 && test -d ../binutils ; then
877 NM='${objdir}/../binutils/nm-new'
879 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
883 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
884 && test -d ../binutils ; then
885 AR='${objdir}/../binutils/ar'
887 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
891 # --------------------
892 # Checks for C headers
893 # --------------------
895 # Need to reject headers which give warnings, so that the -Werror bootstrap
896 # works later. *sigh* This needs to come before all header checks.
903 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
904 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
905 sys/resource.h sys/param.h sys/times.h sys/stat.h \
906 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
908 # Check for thread headers.
909 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
910 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
912 # These tests can't be done till we know if we have limits.h.
921 # These libraries may be used by collect2.
922 # We may need a special search path to get them linked.
923 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
925 for libs in '' -lld -lmld \
926 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
927 '-L/usr/lib/cmplrs/cc3.11 -lmld'
930 AC_TRY_LINK_FUNC(ldopen,
931 [gcc_cv_collect2_libs="$libs"; break])
934 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
935 case $gcc_cv_collect2_libs in
937 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
939 AC_SUBST(COLLECT2_LIBS)
941 # When building Ada code on Alpha, we need exc_resume which is usually in
942 # -lexc. So test for it.
945 AC_SEARCH_LIBS(exc_resume, exc)
948 AC_SUBST(GNAT_LIBEXC)
950 # Some systems put ldexp and frexp in libm instead of libc; assume
951 # they're both in the same place. jcf-dump needs them.
954 AC_SEARCH_LIBS(ldexp, m)
959 # Use <inttypes.h> only if it exists,
960 # doesn't clash with <sys/types.h>, and declares intmax_t.
961 AC_MSG_CHECKING(for inttypes.h)
962 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
963 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
964 [[#include <sys/types.h>
965 #include <inttypes.h>]],
966 [[intmax_t i = -1;]])],
967 [gcc_cv_header_inttypes_h=yes],
968 [gcc_cv_header_inttypes_h=no])])
969 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
970 if test $gcc_cv_header_inttypes_h = yes; then
971 AC_DEFINE(HAVE_INTTYPES_H, 1,
972 [Define if you have a working <inttypes.h> header file.])
975 dnl Disabled until we have a complete test for buggy enum bitfields.
976 dnl gcc_AC_C_ENUM_BF_UNSIGNED
978 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
979 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
980 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
981 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
982 putchar_unlocked putc_unlocked)
983 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
984 sysconf strsignal getrusage nl_langinfo \
985 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
988 save_CPPFLAGS="$CPPFLAGS"
990 LIBS="$LIBS $LIBELFLIBS"
991 AC_CHECK_FUNCS(elf_getshdrstrndx,,
992 [AC_CHECK_FUNCS(elf_getshstrndx,
993 [AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
997 return elf_getshstrndx (NULL, 0) == 0;
998 }]])], AC_DEFINE(HAVE_ELF_GETSHSTRNDX_GABI, 1,
999 [Define if elf_getshstrndx has gABI conformant return values.]))])]
1002 CPPFLAGS="$save_CPPFLAGS"
1004 if test x$ac_cv_func_mbstowcs = xyes; then
1005 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1006 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1012 [gcc_cv_func_mbstowcs_works=yes],
1013 [gcc_cv_func_mbstowcs_works=no],
1014 [gcc_cv_func_mbstowcs_works=yes])])
1015 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1016 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1017 [Define this macro if mbstowcs does not crash when its
1018 first argument is NULL.])
1022 AC_CHECK_TYPE(ssize_t, int)
1023 AC_CHECK_TYPE(caddr_t, char *)
1025 gcc_AC_FUNC_MMAP_BLACKLIST
1029 # Under VMS, vfork works very differently than on Unix. The standard test
1030 # won't work, and it isn't easily adaptable. It makes more sense to
1032 ac_cv_func_vfork_works=yes
1038 # Until we have in-tree GNU iconv:
1040 AC_SUBST(LIBICONV_DEP)
1046 # We will need to find libiberty.h and ansidecl.h
1047 saved_CFLAGS="$CFLAGS"
1048 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1049 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1050 strsignal strstr strverscmp \
1051 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1052 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1053 #include "ansidecl.h"
1054 #include "system.h"])
1056 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1057 #include "ansidecl.h"
1059 #ifdef HAVE_SYS_RESOURCE_H
1060 #include <sys/resource.h>
1064 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1065 #include "ansidecl.h"
1067 #ifdef HAVE_SYS_RESOURCE_H
1068 #include <sys/resource.h>
1070 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1071 [Define to `long' if <sys/resource.h> doesn't define.])])
1073 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1074 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1075 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1076 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1077 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1078 #include "ansidecl.h"
1087 gcc_AC_CHECK_DECLS(times, , ,[
1088 #include "ansidecl.h"
1090 #ifdef HAVE_SYS_TIMES_H
1091 #include <sys/times.h>
1095 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1096 #include "ansidecl.h"
1101 # More time-related stuff.
1102 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1103 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1104 #include "ansidecl.h"
1106 #ifdef HAVE_SYS_TIMES_H
1107 #include <sys/times.h>
1109 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1110 if test $ac_cv_struct_tms = yes; then
1111 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1112 [Define if <sys/times.h> defines struct tms.])
1115 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1116 # revisit after autoconf 2.50.
1117 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1118 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1119 #include "ansidecl.h"
1121 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1122 if test $gcc_cv_type_clock_t = yes; then
1123 AC_DEFINE(HAVE_CLOCK_T, 1,
1124 [Define if <time.h> defines clock_t.])
1127 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1128 CFLAGS="$saved_CFLAGS"
1130 gcc_AC_INITFINI_ARRAY
1132 # mkdir takes a single argument on some systems.
1133 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1141 # With Setjmp/Longjmp based exception handling.
1142 AC_ARG_ENABLE(sjlj-exceptions,
1143 [ --enable-sjlj-exceptions
1144 arrange to use setjmp/longjmp exception handling],
1147 if test $enableval != yes; then
1148 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1153 force_sjlj_exceptions=yes],
1156 force_sjlj_exceptions=yes
1160 force_sjlj_exceptions=no
1163 if test $force_sjlj_exceptions = yes; then
1164 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1165 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1166 [Define 0/1 to force the choice for exception handling model.])
1169 # For platforms with the unwind ABI which includes an unwind library,
1170 # libunwind, we can choose to use the system libunwind.
1171 # config.gcc also contains tests of with_system_libunwind.
1172 GCC_CHECK_UNWIND_GETIPINFO
1174 # --------------------------------------------------------
1175 # Build, host, and target specific configuration fragments
1176 # --------------------------------------------------------
1178 # Collect build-machine-specific information.
1179 . ${srcdir}/config.build
1181 # Collect host-machine-specific information.
1182 . ${srcdir}/config.host
1186 # Collect target-machine-specific information.
1187 . ${srcdir}/config.gcc
1189 extra_objs="${host_extra_objs} ${extra_objs}"
1190 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1192 # Default the target-machine variables that were not explicitly set.
1193 if test x"$tm_file" = x
1194 then tm_file=$cpu_type/$cpu_type.h; fi
1196 if test x"$extra_headers" = x
1197 then extra_headers=; fi
1199 if test x$md_file = x
1200 then md_file=$cpu_type/$cpu_type.md; fi
1202 if test x$out_file = x
1203 then out_file=$cpu_type/$cpu_type.c; fi
1205 if test x"$tmake_file" = x
1206 then tmake_file=$cpu_type/t-$cpu_type
1209 if test x"$dwarf2" = xyes
1210 then tm_file="$tm_file tm-dwarf2.h"
1213 # Say what files are being used for the output code and MD file.
1214 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1215 echo "Using \`$srcdir/config/$md_file' as machine description file."
1217 # If any of the xm_file variables contain nonexistent files, warn
1218 # about them and drop them.
1221 for x in $build_xm_file; do
1222 if test -f $srcdir/config/$x
1224 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1230 for x in $host_xm_file; do
1231 if test -f $srcdir/config/$x
1233 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1239 for x in $xm_file; do
1240 if test -f $srcdir/config/$x
1242 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1248 for f in $tm_file; do
1251 if test $count = ax; then
1252 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1254 echo "Using the following target machine macro files:"
1255 for f in $tm_file; do
1256 echo " $srcdir/config/$f"
1260 if test x$need_64bit_hwint = xyes; then
1261 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1262 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1265 if test x$use_long_long_for_widest_fast_int = xyes; then
1266 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1267 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1268 efficiently supported by the host hardware.])
1272 for f in $host_xm_file; do
1275 if test $count = a; then
1277 elif test $count = ax; then
1278 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1280 echo "Using the following host machine macro files:"
1281 for f in $host_xm_file; do
1282 echo " $srcdir/config/$f"
1285 echo "Using ${out_host_hook_obj} for host machine hooks."
1287 if test "$host_xm_file" != "$build_xm_file"; then
1289 for f in $build_xm_file; do
1292 if test $count = a; then
1294 elif test $count = ax; then
1295 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1297 echo "Using the following build machine macro files:"
1298 for f in $build_xm_file; do
1299 echo " $srcdir/config/$f"
1306 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1307 gcc_cv_mcontext_underscores,
1309 #include <sys/cdefs.h>
1310 #include <sys/signal.h>
1311 #include <ucontext.h>
1312 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1314 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1315 if test $gcc_cv_mcontext_underscores = yes; then
1316 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1317 [mcontext_t fields start with __])
1326 # Check if a valid thread package
1327 case ${enable_threads} in
1330 target_thread_file='single'
1334 target_thread_file='single'
1336 aix | dce | gnat | irix | posix | posix95 | rtems | \
1337 single | solaris | vxworks | win32 | mipssde)
1338 target_thread_file=${enable_threads}
1341 echo "${enable_threads} is an unknown thread package" 1>&2
1346 if test x${thread_file} = x; then
1347 # No thread file set by target-specific clauses in config.gcc,
1348 # so use file chosen by default logic above
1349 thread_file=${target_thread_file}
1352 # Make gthr-default.h if we have a thread file.
1354 if test $thread_file != single; then
1355 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1356 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1357 rm -f gthr-default.h-t
1359 mv -f gthr-default.h-t gthr-default.h
1361 gthread_flags=-DHAVE_GTHR_DEFAULT
1363 AC_SUBST(gthread_flags)
1370 if test x$enable___cxa_atexit = xyes || \
1371 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1372 if test x$host = x$target; then
1374 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1375 # keyed to flag_use_cxa_atexit
1380 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1381 [echo "__cxa_atexit can't be enabled on this target"])
1385 # We can't check for __cxa_atexit when building a cross, so assume
1389 if test x$use_cxa_atexit = xyes; then
1390 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1391 [Define if you want to use __cxa_atexit, rather than atexit, to
1392 register C++ destructors for local statics and global objects.
1393 This is essential for fully standards-compliant handling of
1394 destructors, but requires __cxa_atexit in libc.])
1398 # Look for a file containing extra machine modes.
1399 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1400 extra_modes_file='$(srcdir)'/config/${extra_modes}
1401 AC_SUBST(extra_modes_file)
1402 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1403 [Define to the name of a file containing a list of extra machine modes
1404 for this architecture.])
1407 # Convert extra_options into a form suitable for Makefile use.
1409 for f in $extra_options; do
1410 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1412 AC_SUBST(extra_opt_files)
1414 # auto-host.h is the file containing items generated by autoconf and is
1415 # the first file included by config.h.
1416 # If host=build, it is correct to have bconfig include auto-host.h
1417 # as well. If host!=build, we are in error and need to do more
1418 # work to find out the build config parameters.
1419 if test x$host = x$build
1421 build_auto=auto-host.h
1423 # We create a subdir, then run autoconf in the subdir.
1424 # To prevent recursion we set host and build for the new
1425 # invocation of configure to the build for this invocation
1432 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1433 *) realsrcdir=../${srcdir};;
1435 saved_CFLAGS="${CFLAGS}"
1436 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1437 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1438 ${realsrcdir}/configure \
1439 --enable-languages=${enable_languages-all} \
1440 --target=$target_alias --host=$build_alias --build=$build_alias
1441 CFLAGS="${saved_CFLAGS}"
1443 # We just finished tests for the build machine, so rename
1444 # the file auto-build.h in the gcc directory.
1445 mv auto-host.h ../auto-build.h
1448 build_auto=auto-build.h
1450 AC_SUBST(build_subdir)
1452 tm_file="${tm_file} defaults.h"
1453 tm_p_file="${tm_p_file} tm-preds.h"
1454 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1455 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1456 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1457 # put this back in temporarily.
1458 xm_file="auto-host.h ansidecl.h ${xm_file}"
1465 # Compile in configure arguments.
1466 if test -f configargs.h ; then
1467 # Being re-configured.
1468 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1469 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1471 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1474 # Double all backslashes and backslash all quotes to turn
1475 # gcc_config_arguments into a C string.
1476 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1477 $gcc_config_arguments
1479 gcc_config_arguments_str=`cat conftest.out`
1482 cat > configargs.h <<EOF
1483 /* Generated automatically. */
1484 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1485 static const char thread_model[] = "$thread_file";
1487 static const struct {
1488 const char *name, *value;
1489 } configure_default_options[] = $configure_default_options;
1494 gcc_BASEVER=`cat $srcdir/BASE-VER`
1495 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1496 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1497 if test -f $srcdir/REVISION ; then
1498 gcc_REVISION=`cat $srcdir/REVISION`
1502 cat > plugin-version.h <<EOF
1503 #include "configargs.h"
1505 static char basever[] = "$gcc_BASEVER";
1506 static char datestamp[] = "$gcc_DATESTAMP";
1507 static char devphase[] = "$gcc_DEVPHASE";
1508 static char revision[] = "$gcc_REVISION";
1510 /* FIXME plugins: We should make the version information more precise.
1511 One way to do is to add a checksum. */
1513 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1515 configuration_arguments};
1519 # Internationalization
1520 ZW_GNU_GETTEXT_SISTER_DIR
1522 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1523 # -liconv on the link line twice.
1524 case "$LIBINTL" in *$LIBICONV*)
1528 AC_ARG_ENABLE(secureplt,
1529 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1532 AC_ARG_ENABLE(leading-mingw64-underscores,
1533 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1534 [Enable leading underscores on 64 bit mingw targets]),
1536 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1537 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1538 [Define if we should use leading underscore on 64 bit mingw targets])])
1541 [ --enable-cld enable -mcld by default for 32bit x86], [],
1544 AC_ARG_ENABLE(frame-pointer,
1545 [ --enable-frame-pointer enable -fno-omit-frame-pointer by default for 32bit x86], [],
1548 linux* | darwin[[8912]]*)
1549 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1551 enable_frame_pointer=no
1554 enable_frame_pointer=yes
1559 # Windows32 Registry support for specifying GCC installation paths.
1560 AC_ARG_ENABLE(win32-registry,
1561 [ --disable-win32-registry
1562 disable lookup of installation paths in the
1563 Registry on Windows hosts
1564 --enable-win32-registry enable registry lookup (default)
1565 --enable-win32-registry=KEY
1566 use KEY instead of GCC version as the last portion
1567 of the registry key],,)
1570 win32 | pe | cygwin* | mingw32* | uwin*)
1571 if test "x$enable_win32_registry" != xno; then
1572 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1575 if test "x$enable_win32_registry" != xno; then
1576 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1577 [Define to 1 if installation paths should be looked up in the Windows
1578 Registry. Ignored on non-Windows hosts.])
1580 if test "x$enable_win32_registry" != xyes \
1581 && test "x$enable_win32_registry" != x; then
1582 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1583 [Define to be the last component of the Windows registry key under which
1584 to look for installation paths. The full key used will be
1585 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1586 The default is the GCC version number.])
1592 # Get an absolute path to the GCC top-level source directory
1593 holddir=`${PWDCMD-pwd}`
1595 topdir=`${PWDCMD-pwd}`
1598 # Conditionalize the makefile for this host machine.
1600 for f in ${host_xmake_file}
1602 if test -f ${srcdir}/config/$f
1604 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1608 # Conditionalize the makefile for this target machine.
1610 for f in ${tmake_file}
1612 if test -f ${srcdir}/config/$f
1614 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1617 tmake_file="${tmake_file_}"
1619 out_object_file=`basename $out_file .c`.o
1621 tm_file_list="options.h"
1622 tm_include_list="options.h insn-constants.h"
1623 for f in $tm_file; do
1626 f=`echo $f | sed 's/^..//'`
1627 tm_file_list="${tm_file_list} $f"
1628 tm_include_list="${tm_include_list} $f"
1631 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1632 tm_include_list="${tm_include_list} $f"
1635 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1636 tm_include_list="${tm_include_list} config/$f"
1643 for f in $tm_p_file; do
1646 tm_p_file_list="${tm_p_file_list} $f"
1647 tm_p_include_list="${tm_p_include_list} $f"
1650 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1651 tm_p_include_list="${tm_p_include_list} config/$f"
1657 for f in $xm_file; do
1660 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1661 xm_include_list="${xm_include_list} $f"
1664 xm_file_list="${xm_file_list} $f"
1665 xm_include_list="${xm_include_list} $f"
1668 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1669 xm_include_list="${xm_include_list} config/$f"
1675 host_xm_include_list=
1676 for f in $host_xm_file; do
1679 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1680 host_xm_include_list="${host_xm_include_list} $f"
1683 host_xm_file_list="${host_xm_file_list} $f"
1684 host_xm_include_list="${host_xm_include_list} $f"
1687 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1688 host_xm_include_list="${host_xm_include_list} config/$f"
1694 for f in $build_xm_file; do
1697 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1698 build_xm_include_list="${build_xm_include_list} $f"
1700 auto-build.h | auto-host.h )
1701 build_xm_file_list="${build_xm_file_list} $f"
1702 build_xm_include_list="${build_xm_include_list} $f"
1705 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1706 build_xm_include_list="${build_xm_include_list} config/$f"
1711 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1712 # cross-compiler which does not use the native headers and libraries.
1713 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1714 CROSS= AC_SUBST(CROSS)
1715 ALL=all.internal AC_SUBST(ALL)
1716 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1718 if test "x$with_build_sysroot" != x; then
1719 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1721 # This value is used, even on a native system, because
1722 # CROSS_SYSTEM_HEADER_DIR is just
1723 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1724 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1727 if test x$host != x$target
1729 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1731 SYSTEM_HEADER_DIR=$build_system_header_dir
1732 case "$host","$target" in
1733 # Darwin crosses can use the host system's libraries and headers,
1734 # because of the fat library support. Of course, it must be the
1735 # same version of Darwin on both sides. Allow the user to
1736 # just say --target=foo-darwin without a version number to mean
1737 # "the version on this system".
1738 *-*-darwin*,*-*-darwin*)
1739 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1740 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1741 if test $hostos = $targetos -o $targetos = darwin ; then
1743 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1748 i?86-*-*,x86_64-*-* \
1749 | powerpc*-*-*,powerpc64*-*-*)
1750 CROSS="$CROSS -DNATIVE_CROSS" ;;
1752 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1753 SYSTEM_HEADER_DIR=$build_system_header_dir
1756 # If this is a cross-compiler that does not
1757 # have its own set of headers then define
1760 # If this is using newlib, without having the headers available now,
1761 # then define inhibit_libc in LIBGCC2_CFLAGS.
1762 # This prevents libgcc2 from containing any code which requires libc
1764 : ${inhibit_libc=false}
1765 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1766 test x$with_newlib = xyes ; } &&
1767 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1770 AC_SUBST(inhibit_libc)
1772 # When building gcc with a cross-compiler, we need to adjust things so
1773 # that the generator programs are still built with the native compiler.
1774 # Also, we cannot run fixincludes.
1776 # These are the normal (build=host) settings:
1777 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1778 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1779 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1780 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1782 # And these apply if build != host, or we are generating coverage data
1783 if test x$build != x$host || test "x$coverage_flags" != x
1785 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1786 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1789 # Expand extra_headers to include complete path.
1790 # This substitutes for lots of t-* files.
1792 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1793 for file in ${extra_headers} ; do
1794 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1797 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1798 if test x"$use_gcc_tgmath" = xyes
1799 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1802 # Define collect2 in Makefile.
1803 case $host_can_use_collect2 in
1805 *) collect2='collect2$(exeext)' ;;
1807 AC_SUBST([collect2])
1809 # Add a definition of USE_COLLECT2 if system wants one.
1810 case $use_collect2 in
1811 no) use_collect2= ;;
1814 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1815 xm_defines="${xm_defines} USE_COLLECT2"
1816 case $host_can_use_collect2 in
1818 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1824 # ---------------------------
1825 # Assembler & linker features
1826 # ---------------------------
1828 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1829 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1830 # However when ld-new is first executed from the build tree, libtool will
1831 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1832 # to the build tree. While doing this we need to use the previous-stage
1833 # linker, or we have an infinite loop. The presence of a shell script as
1834 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1835 # the gcc/collect-ld script. So we need to know how libtool works, or
1836 # exec-tool will fail.
1838 m4_defun([_LT_CONFIG_COMMANDS], [])
1841 AC_SUBST(enable_fast_install)
1843 # Identify the assembler which will work hand-in-glove with the newly
1844 # built GCC, so that we can examine its features. This is the assembler
1845 # which will be driven by the driver program.
1847 # If build != host, and we aren't building gas in-tree, we identify a
1848 # build->target assembler and hope that it will have the same features
1849 # as the host->target assembler we'll be using.
1850 gcc_cv_gas_major_version=
1851 gcc_cv_gas_minor_version=
1852 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1854 m4_pattern_allow([AS_FOR_TARGET])dnl
1855 AS_VAR_SET_IF(gcc_cv_as,, [
1856 if test -x "$DEFAULT_ASSEMBLER"; then
1857 gcc_cv_as="$DEFAULT_ASSEMBLER"
1858 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1859 && test -f ../gas/Makefile \
1860 && test x$build = x$host; then
1861 gcc_cv_as=../gas/as-new$build_exeext
1862 elif test -x as$build_exeext; then
1863 # Build using assembler in the current directory.
1864 gcc_cv_as=./as$build_exeext
1865 elif test -x $AS_FOR_TARGET; then
1866 gcc_cv_as="$AS_FOR_TARGET"
1868 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1871 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1872 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1873 case "$ORIGINAL_AS_FOR_TARGET" in
1874 ./as | ./as$build_exeext) ;;
1875 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1878 AC_MSG_CHECKING(what assembler to use)
1879 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1880 # Single tree build which includes gas. We want to prefer it
1881 # over whatever linker top-level may have detected, since
1882 # we'll use what we're building after installation anyway.
1883 AC_MSG_RESULT(newly built gas)
1885 _gcc_COMPUTE_GAS_VERSION
1886 in_tree_gas_is_elf=no
1887 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1888 || (grep 'obj_format = multi' ../gas/Makefile \
1889 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1891 in_tree_gas_is_elf=yes
1894 AC_MSG_RESULT($gcc_cv_as)
1898 # Identify the linker which will work hand-in-glove with the newly
1899 # built GCC, so that we can examine its features. This is the linker
1900 # which will be driven by the driver program.
1902 # If build != host, and we aren't building gas in-tree, we identify a
1903 # build->target linker and hope that it will have the same features
1904 # as the host->target linker we'll be using.
1905 gcc_cv_gld_major_version=
1906 gcc_cv_gld_minor_version=
1907 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1908 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1910 AS_VAR_SET_IF(gcc_cv_ld,, [
1911 if test -x "$DEFAULT_LINKER"; then
1912 gcc_cv_ld="$DEFAULT_LINKER"
1913 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1914 && test -f ../ld/Makefile \
1915 && test x$build = x$host; then
1916 gcc_cv_ld=../ld/ld-new$build_exeext
1917 elif test -x collect-ld$build_exeext; then
1918 # Build using linker in the current directory.
1919 gcc_cv_ld=./collect-ld$build_exeext
1920 elif test -x $LD_FOR_TARGET; then
1921 gcc_cv_ld="$LD_FOR_TARGET"
1923 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1926 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1927 PLUGIN_LD=`basename $gcc_cv_ld`
1928 AC_ARG_WITH(plugin-ld,
1929 [ --with-plugin-ld=[[ARG]] specify the plugin linker],
1930 [if test x"$withval" != x; then
1931 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1932 PLUGIN_LD="$withval"
1934 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1935 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1937 # Check to see if we are using gold instead of ld
1938 AC_MSG_CHECKING(whether we are using gold)
1940 if test x$gcc_cv_ld != x; then
1941 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
1942 | grep "GNU gold" > /dev/null; then
1946 AC_MSG_RESULT($ld_is_gold)
1948 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1949 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1950 case "$ORIGINAL_LD_FOR_TARGET" in
1951 ./collect-ld | ./collect-ld$build_exeext) ;;
1952 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1955 AC_MSG_CHECKING(what linker to use)
1956 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1957 # Single tree build which includes ld. We want to prefer it
1958 # over whatever linker top-level may have detected, since
1959 # we'll use what we're building after installation anyway.
1960 AC_MSG_RESULT(newly built ld)
1962 in_tree_ld_is_elf=no
1963 if (grep 'EMUL = .*elf' ../ld/Makefile \
1964 || grep 'EMUL = .*linux' ../ld/Makefile \
1965 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1966 in_tree_ld_is_elf=yes
1968 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
1971 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1972 if test x$gcc_cv_gld_version != x; then
1976 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1977 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1980 AC_MSG_RESULT($gcc_cv_ld)
1984 # Figure out what nm we will be using.
1985 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1986 AS_VAR_SET_IF(gcc_cv_nm,, [
1987 if test -f $gcc_cv_binutils_srcdir/configure.in \
1988 && test -f ../binutils/Makefile \
1989 && test x$build = x$host; then
1990 gcc_cv_nm=../binutils/nm-new$build_exeext
1991 elif test -x nm$build_exeext; then
1992 gcc_cv_nm=./nm$build_exeext
1993 elif test -x $NM_FOR_TARGET; then
1994 gcc_cv_nm="$NM_FOR_TARGET"
1996 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1999 AC_MSG_CHECKING(what nm to use)
2000 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2001 # Single tree build which includes binutils.
2002 AC_MSG_RESULT(newly built nm)
2005 AC_MSG_RESULT($gcc_cv_nm)
2009 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2010 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2011 case "$ORIGINAL_NM_FOR_TARGET" in
2012 ./nm | ./nm$build_exeext) ;;
2013 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2017 # Figure out what objdump we will be using.
2018 AS_VAR_SET_IF(gcc_cv_objdump,, [
2019 if test -f $gcc_cv_binutils_srcdir/configure.in \
2020 && test -f ../binutils/Makefile \
2021 && test x$build = x$host; then
2022 # Single tree build which includes binutils.
2023 gcc_cv_objdump=../binutils/objdump$build_exeext
2024 elif test -x objdump$build_exeext; then
2025 gcc_cv_objdump=./objdump$build_exeext
2026 elif test -x $OBJDUMP_FOR_TARGET; then
2027 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2029 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2032 AC_MSG_CHECKING(what objdump to use)
2033 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2034 # Single tree build which includes binutils.
2035 AC_MSG_RESULT(newly built objdump)
2036 elif test x$gcc_cv_objdump = x; then
2037 AC_MSG_RESULT(not found)
2039 AC_MSG_RESULT($gcc_cv_objdump)
2042 # Figure out what readelf we will be using.
2043 AS_VAR_SET_IF(gcc_cv_readelf,, [
2044 if test -f $gcc_cv_binutils_srcdir/configure.in \
2045 && test -f ../binutils/Makefile \
2046 && test x$build = x$host; then
2047 # Single tree build which includes binutils.
2048 gcc_cv_readelf=../binutils/readelf$build_exeext
2049 elif test -x readelf$build_exeext; then
2050 gcc_cv_readelf=./readelf$build_exeext
2052 AC_PATH_PROG(gcc_cv_readelf, readelf)
2055 AC_MSG_CHECKING(what readelf to use)
2056 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2057 # Single tree build which includes binutils.
2058 AC_MSG_RESULT(newly built readelf)
2059 elif test x$gcc_cv_readelf = x; then
2060 AC_MSG_RESULT(not found)
2062 AC_MSG_RESULT($gcc_cv_readelf)
2065 # Figure out what assembler alignment features are present.
2066 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2070 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2071 [Define if your assembler supports .balign and .p2align.])])
2073 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2076 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2077 [Define if your assembler supports specifying the maximum number
2078 of bytes to skip when using the GAS .p2align command.])])
2080 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2083 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2084 [Define if your assembler supports .literal16.])])
2086 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2088 [conftest_label1: .word 0
2090 conftest_label2: .word 0
2092 [if test x$gcc_cv_nm != x; then
2093 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2094 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2095 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2097 else gcc_cv_as_subsection_m1=yes
2099 rm -f conftest.nm1 conftest.nm2
2101 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2102 [Define if your assembler supports .subsection and .subsection -1 starts
2103 emitting at the beginning of your section.])])
2105 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2108 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2110 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2112 [ .weakref foobar, barfnot],,
2113 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2115 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2118 .NSUBSPA $CODE$,COMDAT],,
2119 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2121 # .hidden needs to be supported in both the assembler and the linker,
2122 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2123 # This is irritatingly difficult to feature test for; we have to check the
2124 # date string after the version number. If we've got an in-tree
2125 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2127 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2128 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2132 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2133 # STV_HIDDEN, so disable .hidden support if so.
2136 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2137 cat > conftest.s <<EOF
2144 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2145 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2146 grep '\.hidden default' > /dev/null; then
2149 gcc_cv_as_hidden=yes
2152 # Assume bug is present if objdump is missing.
2157 gcc_cv_as_hidden=yes
2162 if test $in_tree_ld != yes ; then
2163 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2164 if test x"$ld_is_gold" = xyes; then
2165 gcc_cv_ld_hidden=yes
2166 elif echo "$ld_ver" | grep GNU > /dev/null; then
2167 ld_vers=`echo $ld_ver | sed -n \
2168 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2169 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2170 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2171 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2172 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2177 # Solaris 2 ld -V output looks like this for a regular version:
2179 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2181 # but test versions add stuff at the end:
2183 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2185 ld_ver=`$gcc_cv_ld -V 2>&1`
2186 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2187 ld_vers=`echo $ld_ver | sed -n \
2188 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2189 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2190 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2198 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2199 [[if test $in_tree_ld = yes ; then
2201 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2202 && test $in_tree_ld_is_elf = yes; then
2203 gcc_cv_ld_hidden=yes
2206 gcc_cv_ld_hidden=yes
2207 if echo "$ld_ver" | grep GNU > /dev/null; then
2208 if test 0"$ld_date" -lt 20020404; then
2209 if test -n "$ld_date"; then
2210 # If there was date string, but was earlier than 2002-04-04, fail
2212 elif test -z "$ld_vers"; then
2213 # If there was no date string nor ld version number, something is wrong
2216 test -z "$ld_vers_patch" && ld_vers_patch=0
2217 if test "$ld_vers_major" -lt 2; then
2219 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2220 gcc_cv_ld_hidden="no"
2221 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2228 hppa64*-*-hpux* | ia64*-*-hpux*)
2229 gcc_cv_ld_hidden=yes
2231 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2232 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2233 # .symbolic was only added in Solaris 9 12/02.
2234 gcc_cv_ld_hidden=yes
2242 libgcc_visibility=no
2243 AC_SUBST(libgcc_visibility)
2244 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2245 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2246 libgcc_visibility=yes
2247 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2248 [Define if your assembler and linker support .hidden.])
2251 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2252 gcc_cv_ld_ro_rw_mix=unknown
2253 if test $in_tree_ld = yes ; then
2254 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2255 && test $in_tree_ld_is_elf = yes; then
2256 gcc_cv_ld_ro_rw_mix=read-write
2258 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2259 echo '.section myfoosect, "a"' > conftest1.s
2260 echo '.section myfoosect, "aw"' > conftest2.s
2261 echo '.byte 1' >> conftest2.s
2262 echo '.section myfoosect, "a"' > conftest3.s
2263 echo '.byte 0' >> conftest3.s
2264 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2265 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2266 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2267 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2268 conftest2.o conftest3.o > /dev/null 2>&1; then
2269 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2270 | sed -e '/myfoosect/!d' -e N`
2271 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2272 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2273 gcc_cv_ld_ro_rw_mix=read-only
2275 gcc_cv_ld_ro_rw_mix=read-write
2280 rm -f conftest.* conftest[123].*
2283 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2284 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2285 [Define if your linker links a mix of read-only
2286 and read-write sections into a read-write section.])
2288 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2290 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2291 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2299 [[# GAS versions before 2.11 do not support uleb128,
2300 # despite appearing to.
2301 # ??? There exists an elf-specific test that will crash
2302 # the assembler. Perhaps it's better to figure out whether
2303 # arbitrary sections are supported and try the test.
2304 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2305 if echo "$as_ver" | grep GNU > /dev/null; then
2306 as_vers=`echo $as_ver | sed -n \
2307 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2308 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2309 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2310 if test $as_major -eq 2 && test $as_minor -lt 11
2312 else gcc_cv_as_leb128=yes
2315 [AC_DEFINE(HAVE_AS_LEB128, 1,
2316 [Define if your assembler supports .sleb128 and .uleb128.])])
2318 # Check if we have assembler support for unwind directives.
2319 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2326 .cfi_escape 1, 2, 3, 4, 5
2330 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2331 # read-only and read-write sections, we need to make sure that the
2332 # assembler used emits read-write .eh_frame sections.
2333 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2334 if test "x$gcc_cv_objdump" != x; then
2335 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2336 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2337 gcc_cv_as_cfi_directive=no
2340 i?86-*-solaris2.1[[0-9]]*)
2341 # On Solaris/x86, make sure that GCC and gas agree on using
2342 # read-only .eh_frame sections for 64-bit.
2343 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2344 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2345 sed -e /.eh_frame/!d -e N | \
2346 grep READONLY > /dev/null; then
2347 gcc_cv_as_cfi_directive=yes
2349 gcc_cv_as_cfi_directive=no
2353 gcc_cv_as_cfi_directive=yes
2358 # no objdump, err on the side of caution
2359 gcc_cv_as_cfi_directive=no
2362 gcc_cv_as_cfi_directive=yes
2366 gcc_cv_as_cfi_directive=yes
2369 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2370 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2374 .cfi_adjust_cfa_offset 64
2376 .cfi_adjust_cfa_offset 128
2379 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2380 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2381 gcc_cv_as_cfi_advance_working=yes
2385 # no objdump, err on the side of caution
2386 gcc_cv_as_cfi_advance_working=no
2388 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2389 [`if test $gcc_cv_as_cfi_directive = yes \
2390 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2391 [Define 0/1 if your assembler supports CFI directives.])
2393 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2394 gcc_cv_as_cfi_personality_directive, ,,
2397 .cfi_personality 0, symbol
2399 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2400 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2401 then echo 1; else echo 0; fi`],
2402 [Define 0/1 if your assembler supports .cfi_personality.])
2404 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2405 gcc_cv_as_cfi_sections_directive, ,,
2407 .cfi_sections .debug_frame, .eh_frame
2411 win32 | pe | cygwin* | mingw32* | uwin*)
2412 # Need to check that we generated the correct relocation for the
2413 # .debug_frame section. This was fixed for binutils 2.21.
2414 gcc_cv_as_cfi_sections_directive=no
2415 if test "x$gcc_cv_objdump" != x; then
2416 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2417 grep secrel > /dev/null; then
2418 gcc_cv_as_cfi_sections_directive=yes
2423 gcc_cv_as_cfi_sections_directive=yes
2426 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2427 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2428 then echo 1; else echo 0; fi`],
2429 [Define 0/1 if your assembler supports .cfi_sections.])
2431 # GAS versions up to and including 2.11.0 may mis-optimize
2433 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2441 .section .eh_frame,"aw",@progbits
2443 .4byte .LECIE1-.LSCIE1
2457 .4byte .LEFDE1-.LASFDE1
2459 .4byte .LASFDE1-__FRAME_BEGIN__
2467 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2468 cat > conftest.lit <<EOF
2469 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2470 0010 01000000 12000000 18000000 00000000 ................
2471 0020 08000000 04080000 0044 .........D @&t@
2473 cat > conftest.big <<EOF
2474 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2475 0010 00000001 00000012 00000018 00000000 ................
2476 0020 00000008 04000000 0844 .........D @&t@
2478 # If the assembler didn't choke, and we can objdump,
2479 # and we got the correct data, then succeed.
2480 # The text in the here-document typically retains its unix-style line
2481 # endings, while the output of objdump will use host line endings.
2482 # Therefore, use diff -b for the comparisons.
2483 if test x$gcc_cv_objdump != x \
2484 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2485 | tail -3 > conftest.got \
2486 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2487 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2489 gcc_cv_as_eh_frame=yes
2490 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2491 gcc_cv_as_eh_frame=buggy
2493 # Uh oh, what do we do now?
2494 gcc_cv_as_eh_frame=no
2497 if test $gcc_cv_as_eh_frame = buggy; then
2498 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2499 [Define if your assembler mis-optimizes .eh_frame data.])
2502 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2503 [elf,2,12,0], [--fatal-warnings],
2504 [.section .rodata.str, "aMS", @progbits, 1])
2505 if test $gcc_cv_as_shf_merge = no; then
2506 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2507 [elf,2,12,0], [--fatal-warnings],
2508 [.section .rodata.str, "aMS", %progbits, 1])
2510 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2511 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2512 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2514 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2515 [elf,2,16,0], [--fatal-warnings],
2516 [.section .text,"axG",@progbits,.foo,comdat])
2517 if test $gcc_cv_as_comdat_group = yes; then
2518 gcc_cv_as_comdat_group_percent=no
2520 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2521 [elf,2,16,0], [--fatal-warnings],
2522 [.section .text,"axG",%progbits,.foo,comdat])
2524 if test x"$ld_is_gold" = xyes; then
2526 elif test $in_tree_ld = yes ; then
2528 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2529 && test $in_tree_ld_is_elf = yes; then
2532 elif echo "$ld_ver" | grep GNU > /dev/null; then
2534 if test 0"$ld_date" -lt 20050308; then
2535 if test -n "$ld_date"; then
2536 # If there was date string, but was earlier than 2005-03-08, fail
2538 elif test "$ld_vers_major" -lt 2; then
2540 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2547 *-*-solaris2.1[1-9]*)
2548 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2549 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2552 # FIXME: Maybe need to refine later when COMDAT group support with
2553 # Sun as is implemented.
2554 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 1688; then
2561 # Assume linkers other than GNU ld don't support COMDAT group.
2567 # Allow overriding the automatic COMDAT group tests above.
2568 AC_ARG_ENABLE(comdat,
2569 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2570 [comdat_group="$enable_comdat"])
2571 if test $comdat_group = no; then
2572 gcc_cv_as_comdat_group=no
2573 gcc_cv_as_comdat_group_percent=no
2575 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2576 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2577 [Define 0/1 if your assembler and linker support COMDAT groups.])
2579 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2580 gcc_cv_as_discriminator,
2584 .loc 1 1 0 discriminator 1],,
2585 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2586 [Define if your assembler supports the .loc discriminator sub-directive.])])
2588 # Thread-local storage - the check is heavily parameterized.
2597 .section ".tdata","awT",@progbits
2600 ldq $27,__tls_get_addr($29) !literal!1
2601 lda $16,foo($29) !tlsgd!1
2602 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2603 ldq $27,__tls_get_addr($29) !literal!2
2604 lda $16,foo($29) !tlsldm!2
2605 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2606 ldq $1,foo($29) !gotdtprel
2607 ldah $2,foo($29) !dtprelhi
2608 lda $3,foo($2) !dtprello
2609 lda $4,foo($29) !dtprel
2610 ldq $1,foo($29) !gottprel
2611 ldah $2,foo($29) !tprelhi
2612 lda $3,foo($2) !tprello
2613 lda $4,foo($29) !tprel'
2616 tls_as_opt=--fatal-warnings
2618 cris-*-*|crisv32-*-*)
2620 .section ".tdata","awT",@progbits
2627 tls_as_opt=--fatal-warnings
2631 .section ".tdata","awT",@progbits
2643 .section ".tdata","awT",@progbits
2647 addil LT%foo-$tls_gdidx$,gp
2648 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2651 addil LT%foo-$tls_ldidx$,gp
2653 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2654 addil LR%foo-$tls_dtpoff$,%ret0
2655 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2657 addil LT%foo-$tls_ieoff$,gp
2658 ldw RT%foo-$tls_ieoff$(%r1),%t2
2661 addil LR%foo-$tls_leoff$,%t1
2662 ldo RR%foo-$tls_leoff$(%r1),%t2'
2665 tls_as_opt=--fatal-warnings
2669 .section ".tdata","awT",%progbits
2682 i[34567]86-*-solaris2.*)
2684 tga_func=___tls_get_addr
2690 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2692 .section .tdata,"awt",@progbits'
2696 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2697 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2701 .section ".tdata","awT",@progbits'
2704 tls_as_opt="--fatal-warnings"
2706 conftest_s="$conftest_s
2710 leal foo@tlsgd(,%ebx,1), %eax
2711 leal foo@tlsldm(%ebx), %eax
2712 leal foo@dtpoff(%eax), %edx
2713 movl foo@gottpoff(%ebx), %eax
2714 subl foo@gottpoff(%ebx), %eax
2715 addl foo@gotntpoff(%ebx), %eax
2716 movl foo@indntpoff, %eax
2717 movl \$foo@tpoff, %eax
2718 subl \$foo@tpoff, %eax
2719 leal foo@ntpoff(%ecx), %eax"
2723 .section ".tdata","awT",@progbits
2727 leaq foo@TLSGD(%rip), %rdi
2728 leaq foo@TLSLD(%rip), %rdi
2729 leaq foo@DTPOFF(%rax), %rdx
2730 movq foo@GOTTPOFF(%rip), %rax
2731 movq $foo@TPOFF, %rax'
2734 tls_as_opt=--fatal-warnings
2738 .section ".tdata","awT",@progbits
2741 addl r16 = @ltoff(@dtpmod(foo#)), gp
2742 addl r17 = @ltoff(@dtprel(foo#)), gp
2743 addl r18 = @ltoff(@tprel(foo#)), gp
2744 addl r19 = @dtprel(foo#), gp
2745 adds r21 = @dtprel(foo#), r13
2746 movl r23 = @dtprel(foo#)
2747 addl r20 = @tprel(foo#), gp
2748 adds r22 = @tprel(foo#), r13
2749 movl r24 = @tprel(foo#)'
2752 tls_as_opt=--fatal-warnings
2756 .section .tdata,"awT",@progbits
2760 addiu $4, $28, %tlsgd(x)
2761 addiu $4, $28, %tlsldm(x)
2762 lui $4, %dtprel_hi(x)
2763 addiu $4, $4, %dtprel_lo(x)
2764 lw $4, %gottprel(x)($28)
2765 lui $4, %tprel_hi(x)
2766 addiu $4, $4, %tprel_lo(x)'
2769 tls_as_opt='-32 --fatal-warnings'
2773 .section .tdata,"awT",@progbits
2778 move.l x@TLSGD(%a5),%a0
2779 move.l x@TLSLDM(%a5),%a0
2780 move.l x@TLSLDO(%a5),%a0
2781 move.l x@TLSIE(%a5),%a0
2782 move.l x@TLSLE(%a5),%a0'
2785 tls_as_opt='--fatal-warnings'
2789 .section ".tdata","awT",@progbits
2797 addi 3,31,ld0@got@tlsgd
2799 addi 3,31,x1@got@tlsld
2802 addis 9,3,x2@dtprel@ha
2803 addi 9,9,x2@dtprel@l
2804 lwz 9,x3@got@tprel(31)
2807 addis 9,2,x2@tprel@ha
2808 addi 9,9,x2@tprel@l'
2811 tls_as_opt="-a32 --fatal-warnings"
2815 .section ".tdata","awT",@progbits
2823 addi 3,2,ld0@got@tlsgd
2829 addi 3,2,x1@got@tlsld
2835 addis 9,3,x2@dtprel@ha
2836 addi 9,9,x2@dtprel@l
2839 ld 9,x3@got@dtprel(2)
2845 tls_as_opt="-a64 --fatal-warnings"
2849 .section ".tdata","awT",@progbits
2858 l %r1,foo@GOTNTPOFF(%r12)
2859 l %r1,0(%r1):tls_load:foo
2860 bas %r14,0(%r1,%r13):tls_gdcall:foo
2861 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2864 tls_as_opt="-m31 --fatal-warnings"
2868 .section ".tdata","awT",@progbits
2876 lg %r1,foo@GOTNTPOFF(%r12)
2877 larl %r1,foo@INDNTPOFF
2878 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2879 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2882 tls_as_opt="-m64 -Aesame --fatal-warnings"
2884 sh-*-* | sh[34]-*-*)
2886 .section ".tdata","awT",@progbits
2896 tls_as_opt=--fatal-warnings
2900 sparc*-sun-solaris2.*)
2902 tga_func=__tls_get_addr
2908 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2910 .section ".tdata",#alloc,#write,#tls'
2915 .section ".tdata","awT",@progbits'
2918 tls_as_opt="-32 --fatal-warnings"
2920 conftest_s="$conftest_s
2923 sethi %tgd_hi22(foo), %o0
2924 add %o0, %tgd_lo10(foo), %o1
2925 add %l7, %o1, %o0, %tgd_add(foo)
2926 call __tls_get_addr, %tgd_call(foo)
2927 sethi %tldm_hi22(foo), %l1
2928 add %l1, %tldm_lo10(foo), %l2
2929 add %l7, %l2, %o0, %tldm_add(foo)
2930 call __tls_get_addr, %tldm_call(foo)
2931 sethi %tldo_hix22(foo), %l3
2932 xor %l3, %tldo_lox10(foo), %l4
2933 add %o0, %l4, %l5, %tldo_add(foo)
2934 sethi %tie_hi22(foo), %o3
2935 add %o3, %tie_lo10(foo), %o3
2936 ld [%l7 + %o3], %o2, %tie_ld(foo)
2937 add %g7, %o2, %o4, %tie_add(foo)
2938 sethi %tle_hix22(foo), %l1
2939 xor %l1, %tle_lox10(foo), %o5
2940 ld [%g7 + %o5], %o1"
2944 .section ".tdata","awT",@progbits
2947 movi a8, foo@TLSFUNC
2948 movi a10, foo@TLSARG
2949 callx8.tls a8, foo@TLSCALL'
2956 if test "x$enable_tls" = xno ; then
2957 : # TLS explicitly disabled.
2958 elif test "x$enable_tls" = xyes ; then
2959 set_have_as_tls=yes # TLS explicitly enabled.
2960 elif test -z "$tls_first_major"; then
2961 : # If we don't have a check, assume no support.
2963 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2964 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2965 [set_have_as_tls=yes])
2968 # TLS was introduced in the Solaris 9 FCS release and backported to
2969 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
2970 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
2971 # ld and GCC don't support any longer.
2973 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
2975 # Check ld and ld.so.1 TLS support.
2976 if echo "$ld_ver" | grep GNU > /dev/null; then
2977 # Assume all interesting versions of GNU ld have TLS support.
2978 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
2982 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
2984 min_tls_ld_vers_minor=280
2986 # Solaris 8/SPARC ld has TLS support since version 1.272.
2987 sparc*-*-solaris2.8)
2988 min_tls_ld_vers_minor=272
2990 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
2992 min_tls_ld_vers_minor=374
2994 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
2995 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
2996 min_tls_ld_vers_minor=343
2999 if test "$ls_vers_major" -gt 1 || \
3000 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3006 AC_MSG_RESULT($ld_tls_support)
3009 save_LDFLAGS="$LDFLAGS"
3013 AC_MSG_CHECKING(alternate thread library)
3015 # TLS support was backported to Solaris 8 patches, but only lives in
3016 # the alternate thread library which became the default in Solaris 9.
3017 # We want to always use that, irrespective of TLS support.
3019 # Take multilib subdir into account. There's no spec to handle
3020 # this. The 64 symlink exists since Solaris 8.
3021 lwp_dir=/usr/lib/lwp
3022 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3023 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3030 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3031 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3032 [Define to the linker flags to use for -pthread.])
3033 AC_MSG_RESULT($lwp_dir)
3035 AC_MSG_CHECKING(library containing $tga_func)
3036 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3037 # (32-bit x86) only lived in libthread, so check for that. Keep
3038 # set_have_as_tls if found, disable if not.
3039 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3040 # Clear LIBS if we cannot support TLS.
3041 if test $set_have_as_tls = no; then
3044 # Always define LIB_TLS_SPEC, even without TLS support.
3045 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3046 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3047 AC_MSG_RESULT($LIBS)
3050 LDFLAGS="$save_LDFLAGS"
3053 if test $set_have_as_tls = yes ; then
3054 AC_DEFINE(HAVE_AS_TLS, 1,
3055 [Define if your assembler and linker support thread-local storage.])
3058 # Target-specific assembler checks.
3060 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3061 gcc_cv_ld_static_dynamic=no
3062 if test $in_tree_ld = yes ; then
3063 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3064 gcc_cv_ld_static_dynamic=yes
3066 elif test x$gcc_cv_ld != x; then
3067 # Check if linker supports -Bstatic/-Bdynamic option
3068 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3069 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3070 gcc_cv_ld_static_dynamic=yes
3073 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3074 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3075 [Define if your linker supports -Bstatic/-Bdynamic option.])
3077 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3079 if test x"$demangler_in_ld" = xyes; then
3080 AC_MSG_CHECKING(linker --demangle support)
3081 gcc_cv_ld_demangle=no
3082 if test $in_tree_ld = yes; then
3083 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3084 gcc_cv_ld_demangle=yes
3086 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3087 # Check if the GNU linker supports --demangle option
3088 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3089 gcc_cv_ld_demangle=yes
3092 if test x"$gcc_cv_ld_demangle" = xyes; then
3093 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3094 [Define if your linker supports --demangle option.])
3096 AC_MSG_RESULT($gcc_cv_ld_demangle)
3100 # All TARGET_ABI_OSF targets.
3101 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3102 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3103 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3106 extbl $3, $2, $3 !lituse_bytoff!1
3107 ldq $2, a($29) !literal!1
3108 ldq $4, b($29) !literal!2
3109 ldq_u $3, 0($2) !lituse_base!1
3110 ldq $27, f($29) !literal!5
3111 jsr $26, ($27), f !lituse_jsr!5
3112 ldah $29, 0($26) !gpdisp!3
3113 lda $0, c($29) !gprel
3114 ldah $1, d($29) !gprelhigh
3115 lda $1, d($1) !gprellow
3116 lda $29, 0($29) !gpdisp!3],,
3117 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3118 [Define if your assembler supports explicit relocations.])])
3119 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3120 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3123 ldq $27, a($29) !literal!1
3124 jsr $26, ($27), a !lituse_jsrdirect!1],,
3125 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3126 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3130 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3131 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3132 [-no-mul-bug-abort], [.text],,
3133 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3134 [Define if your assembler supports the -no-mul-bug-abort option.])])
3138 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3139 [.register %g2, #scratch],,
3140 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3141 [Define if your assembler supports .register.])])
3143 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3145 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3146 [Define if your assembler supports -relax option.])])
3148 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3149 gcc_cv_as_sparc_gotdata_op,,
3155 sethi %gdop_hix22(foo), %g1
3156 xor %g1, %gdop_lox10(foo), %g1
3157 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3158 [if test x$gcc_cv_ld != x \
3159 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3160 if $gcc_cv_ld -v | grep GNU >/dev/null 2>&1; then
3161 if test x$gcc_cv_objdump != x; then
3162 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3163 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3164 gcc_cv_as_sparc_gotdata_op=no
3166 gcc_cv_as_sparc_gotdata_op=yes
3170 gcc_cv_as_sparc_gotdata_op=yes
3174 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3175 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3177 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3178 gcc_cv_as_sparc_ua_pcrel,,
3186 .uaword %r_disp32(foo)],
3187 [if test x$gcc_cv_ld != x \
3188 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3189 gcc_cv_as_sparc_ua_pcrel=yes
3192 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3193 [Define if your assembler and linker support unaligned PC relative relocs.])
3195 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3196 gcc_cv_as_sparc_ua_pcrel_hidden,,
3201 .uaword %r_disp32(foo)
3202 .byte 0x32, 0x33, 0x34
3207 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3208 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3209 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3210 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3211 if $gcc_cv_objdump -R conftest 2> /dev/null \
3212 | grep 'DISP32' > /dev/null 2>&1; then
3215 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3219 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3220 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3221 ]) # unaligned pcrel relocs
3223 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3224 gcc_cv_as_sparc_offsetable_lo10,,
3227 or %g1, %lo(ab) + 12, %g1
3228 or %g1, %lo(ab + 12), %g1],
3229 [if test x$gcc_cv_objdump != x \
3230 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3231 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3232 gcc_cv_as_sparc_offsetable_lo10=yes
3234 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3235 [Define if your assembler supports offsetable %lo().])])
3239 i[34567]86-*-* | x86_64-*-*)
3243 # Full C++ conformance when using a shared libstdc++-v3 requires some
3244 # support from the Cygwin DLL, which in more recent versions exports
3245 # wrappers to aid in interposing and redirecting operators new, delete,
3246 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3247 # are configuring for a version of Cygwin that exports the wrappers.
3248 if test x$host = x$target; then
3249 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3251 # Can't check presence of libc functions during cross-compile, so
3252 # we just have to assume we're building for an up-to-date target.
3253 gcc_ac_cygwin_dll_wrappers=yes
3255 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3256 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3257 [Define if you want to generate code by default that assumes that the
3258 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3261 cygwin* | pe | mingw32*)
3262 # Recent binutils allows the three-operand form of ".comm" on PE. This
3263 # definition is used unconditionally to initialise the default state of
3264 # the target option variable that governs usage of the feature.
3265 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3266 [2,19,52],,[.comm foo,1,32])
3267 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3268 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3269 [Define if your assembler supports specifying the alignment
3270 of objects allocated using the GAS .comm command.])
3271 # Used for DWARF 2 in PE
3272 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3273 gcc_cv_as_ix86_pe_secrel32,
3279 [if test x$gcc_cv_ld != x \
3280 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3281 gcc_cv_as_ix86_pe_secrel32=yes
3284 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3285 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3286 # Test if the assembler supports the extended form of the .section
3287 # directive that specifies section alignment. LTO support uses this,
3288 # but normally only after installation, so we warn but don't fail the
3289 # configure if LTO is enabled but the assembler does not support it.
3290 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3291 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3292 if test x$gcc_cv_as_section_has_align != xyes; then
3293 case ",$enable_languages," in
3295 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3302 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3303 gcc_cv_as_ix86_filds,,,
3304 [filds mem; fists mem],,
3305 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3306 [Define if your assembler uses filds and fists mnemonics.])])
3308 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3309 gcc_cv_as_ix86_fildq,,,
3310 [fildq mem; fistpq mem],,
3311 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3312 [Define if your assembler uses fildq and fistq mnemonics.])])
3314 gcc_GAS_CHECK_FEATURE([cmov syntax],
3315 gcc_cv_as_ix86_cmov_sun_syntax,,,
3316 [cmovl.l %edx, %eax],,
3317 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3318 [Define if your assembler supports the Sun syntax for cmov.])])
3320 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3321 gcc_cv_as_ix86_ffreep,,,
3323 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3324 [Define if your assembler supports the ffreep mnemonic.])])
3326 gcc_GAS_CHECK_FEATURE([.quad directive],
3327 gcc_cv_as_ix86_quad,,,
3329 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3330 [Define if your assembler supports the .quad directive.])])
3332 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3333 gcc_cv_as_ix86_sahf,,,
3336 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3337 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3339 gcc_GAS_CHECK_FEATURE([swap suffix],
3340 gcc_cv_as_ix86_swap,,,
3341 [movl.s %esp, %ebp],,
3342 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3343 [Define if your assembler supports the swap suffix.])])
3345 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3346 gcc_cv_as_ix86_diff_sect_delta,,,
3354 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3355 [Define if your assembler supports the subtraction of symbols in different sections.])])
3357 # These two are used unconditionally by i386.[ch]; it is to be defined
3358 # to 1 if the feature is present, 0 otherwise.
3359 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3360 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3366 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3367 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3368 [Define true if the assembler supports '.long foo@GOTOFF'.])
3370 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3371 gcc_cv_as_ix86_rep_lock_prefix,,,
3373 lock addl %edi, (%eax,%esi)
3374 lock orl $0, (%esp)],,
3375 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3376 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3381 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3382 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3384 addl r15 = @ltoffx(x#), gp
3386 ld8.mov r16 = [[r15]], x#],,
3387 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3388 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3394 *-*-aix*) conftest_s=' .machine "pwr5"
3398 gcc_GAS_CHECK_FEATURE([.machine directive support],
3399 gcc_cv_as_machine_directive,,,
3400 [ .machine ppc7400])
3401 if test x$gcc_cv_as_machine_directive != xyes; then
3402 echo "*** This target requires an assembler supporting \".machine\"" >&2
3403 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3404 test x$build = x$target && exit 1
3408 *) conftest_s=' .machine power4
3413 gcc_GAS_CHECK_FEATURE([mfcr field support],
3414 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3416 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3417 [Define if your assembler supports mfcr field.])])
3420 *-*-aix*) conftest_s=' .machine "pwr5"
3423 *) conftest_s=' .machine power5
3428 gcc_GAS_CHECK_FEATURE([popcntb support],
3429 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3431 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3432 [Define if your assembler supports popcntb field.])])
3435 *-*-aix*) conftest_s=' .machine "pwr5x"
3438 *) conftest_s=' .machine power5
3443 gcc_GAS_CHECK_FEATURE([fp round support],
3444 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3446 [AC_DEFINE(HAVE_AS_FPRND, 1,
3447 [Define if your assembler supports fprnd.])])
3450 *-*-aix*) conftest_s=' .machine "pwr6"
3453 *) conftest_s=' .machine power6
3458 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3459 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3461 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3462 [Define if your assembler supports mffgpr and mftgpr.])])
3465 *-*-aix*) conftest_s=' .csect .text[[PR]]
3467 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3471 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3472 *) conftest_s=' .text
3474 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3477 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3478 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3480 [AC_DEFINE(HAVE_AS_REL16, 1,
3481 [Define if your assembler supports R_PPC_REL16 relocs.])])
3484 *-*-aix*) conftest_s=' .machine "pwr6"
3487 *) conftest_s=' .machine power6
3492 gcc_GAS_CHECK_FEATURE([compare bytes support],
3493 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3495 [AC_DEFINE(HAVE_AS_CMPB, 1,
3496 [Define if your assembler supports cmpb.])])
3499 *-*-aix*) conftest_s=' .machine "pwr6"
3502 *) conftest_s=' .machine power6
3507 gcc_GAS_CHECK_FEATURE([decimal float support],
3508 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3510 [AC_DEFINE(HAVE_AS_DFP, 1,
3511 [Define if your assembler supports DFP instructions.])])
3514 *-*-aix*) conftest_s=' .machine "pwr7"
3517 *) conftest_s=' .machine power7
3522 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3523 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3525 [AC_DEFINE(HAVE_AS_VSX, 1,
3526 [Define if your assembler supports VSX instructions.])])
3529 *-*-aix*) conftest_s=' .machine "pwr7"
3532 *) conftest_s=' .machine power7
3537 gcc_GAS_CHECK_FEATURE([popcntd support],
3538 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3540 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3541 [Define if your assembler supports POPCNTD instructions.])])
3544 *-*-aix*) conftest_s=' .csect .text[[PR]]
3546 *) conftest_s=' .text
3550 gcc_GAS_CHECK_FEATURE([lwsync support],
3551 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3553 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3554 [Define if your assembler supports LWSYNC instructions.])])
3557 *-*-aix*) conftest_s=' .machine "476"
3560 *) conftest_s=' .machine "476"
3565 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3566 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3568 [AC_DEFINE(HAVE_AS_DCI, 1,
3569 [Define if your assembler supports the DCI/ICI instructions.])])
3571 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3572 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3573 [.gnu_attribute 4,1],,
3574 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3575 [Define if your assembler supports .gnu_attribute.])])
3577 gcc_GAS_CHECK_FEATURE([tls marker support],
3578 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3579 [ bl __tls_get_addr(x@tlsgd)],,
3580 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3581 [Define if your assembler supports arg info for __tls_get_addr.])])
3585 gcc_GAS_CHECK_FEATURE([.ref support],
3586 gcc_cv_as_aix_ref, [2.21.0],,
3587 [ .csect stuff[[rw]]
3593 [AC_DEFINE(HAVE_AS_REF, 1,
3594 [Define if your assembler supports .ref])])
3600 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3601 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3602 [ lw $4,%gp_rel(foo)($4)],,
3603 [if test x$target_cpu_default = x
3604 then target_cpu_default=MASK_EXPLICIT_RELOCS
3605 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3607 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3608 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3609 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3610 [Define if the assembler understands -mno-shared.])])
3612 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3613 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3614 [.gnu_attribute 4,1],,
3615 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3616 [Define if your assembler supports .gnu_attribute.])])
3618 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3619 gcc_cv_as_mips_dtprelword, [2,18,0],,
3620 [.section .tdata,"awT",@progbits
3624 .dtprelword x+0x8000],,
3625 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3626 [Define if your assembler supports .dtprelword.])])
3628 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3629 gcc_cv_as_ld_jalr_reloc=no
3630 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3631 if test $in_tree_ld = yes ; then
3632 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3633 && test $in_tree_ld_is_elf = yes; then
3634 gcc_cv_as_ld_jalr_reloc=yes
3636 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3637 echo ' .ent x' > conftest.s
3638 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3639 echo ' ld $25,%call16(y)($28)' >> conftest.s
3640 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3641 echo '1: jalr $25' >> conftest.s
3642 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3643 echo '1: jalr $25' >> conftest.s
3644 echo ' .end x' >> conftest.s
3645 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3646 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3647 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3648 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3649 gcc_cv_as_ld_jalr_reloc=yes
3655 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3656 if test x$target_cpu_default = x; then
3657 target_cpu_default=MASK_RELAX_PIC_CALLS
3659 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3662 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3664 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3665 [gcc_cv_ld_mips_personality_relaxation],
3666 [gcc_cv_ld_mips_personality_relaxation=no
3667 if test $in_tree_ld = yes ; then
3668 if test "$gcc_cv_gld_major_version" -eq 2 \
3669 -a "$gcc_cv_gld_minor_version" -ge 21 \
3670 -o "$gcc_cv_gld_major_version" -gt 2; then
3671 gcc_cv_ld_mips_personality_relaxation=yes
3673 elif test x$gcc_cv_as != x \
3674 -a x$gcc_cv_ld != x \
3675 -a x$gcc_cv_readelf != x ; then
3676 cat > conftest.s <<EOF
3678 .cfi_personality 0x80,indirect_ptr
3685 .section .data,"aw",@progbits
3689 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3690 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3691 if $gcc_cv_readelf -d conftest 2>&1 \
3692 | grep TEXTREL > /dev/null 2>&1; then
3694 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3695 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3698 gcc_cv_ld_mips_personality_relaxation=yes
3702 rm -f conftest.s conftest.o conftest])
3703 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3704 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3705 [Define if your linker can relax absolute .eh_frame personality
3706 pointers into PC-relative form.])
3711 # Mips and HP-UX need the GNU assembler.
3712 # Linux on IA64 might be able to use the Intel assembler.
3715 mips*-*-* | *-*-hpux* )
3716 if test x$gas_flag = xyes \
3717 || test x"$host" != x"$build" \
3718 || test ! -x "$gcc_cv_as" \
3719 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3722 echo "*** This configuration requires the GNU assembler" >&2
3728 # ??? Not all targets support dwarf2 debug_line, even within a version
3729 # of gas. Moreover, we need to emit a valid instruction to trigger any
3730 # info to the output file. So, as supported targets are added to gas 2.11,
3731 # add some instruction here to (also) show we expect this might work.
3732 # ??? Once 2.11 is released, probably need to add first known working
3733 # version to the per-target configury.
3735 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3736 | x86_64*-*-* | hppa*-*-* | arm*-*-* \
3737 | xstormy16*-*-* | cris-*-* | crisv32-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \
3738 | spu-*-* | fido*-*-* | m32c-*-*)
3741 ia64*-*-* | s390*-*-*)
3748 if test x"$insn" != x; then
3750 .file 1 \"conftest.s\"
3753 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3754 gcc_cv_as_dwarf2_debug_line,
3755 [elf,2,11,0],, [$conftest_s],
3756 [if test x$gcc_cv_objdump != x \
3757 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3758 | grep debug_line > /dev/null 2>&1; then
3759 gcc_cv_as_dwarf2_debug_line=yes
3762 # The .debug_line file table must be in the exact order that
3763 # we specified the files, since these indices are also used
3764 # by DW_AT_decl_file. Approximate this test by testing if
3765 # the assembler bitches if the same index is assigned twice.
3766 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3767 gcc_cv_as_dwarf2_file_buggy,,,
3771 if test $gcc_cv_as_dwarf2_debug_line = yes \
3772 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3773 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3774 [Define if your assembler supports dwarf2 .file/.loc directives,
3775 and preserves file table indices exactly as given.])
3778 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3779 gcc_cv_as_gdwarf2_flag,
3780 [elf,2,11,0], [--gdwarf2], [$insn],,
3781 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3782 [Define if your assembler supports the --gdwarf2 option.])])
3784 gcc_GAS_CHECK_FEATURE([--gstabs option],
3785 gcc_cv_as_gstabs_flag,
3786 [elf,2,11,0], [--gstabs], [$insn],
3787 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3788 # and warns about it, but still exits successfully. So check for
3790 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3792 else gcc_cv_as_gstabs_flag=yes
3794 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3795 [Define if your assembler supports the --gstabs option.])])
3797 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3798 gcc_cv_as_debug_prefix_map_flag,
3799 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3800 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3801 [Define if your assembler supports the --debug-prefix-map option.])])
3804 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3807 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3808 [Define if your assembler supports .lcomm with an alignment field.])])
3810 AC_ARG_ENABLE(gnu-unique-object,
3811 [ --enable-gnu-unique-object enable the use of the @gnu_unique_object ELF extension on
3813 [case $enable_gnu_unique_object in
3815 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
3816 Valid choices are 'yes' and 'no'.]) ;;
3818 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
3820 [.type foo, @gnu_unique_object],,
3821 # Also check for ld.so support, i.e. glibc 2.11 or higher.
3822 [[if test x$host = x$build -a x$host = x$target &&
3823 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
3824 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
3825 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
3826 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
3827 if test "$glibcnum" -ge 2011 ; then
3828 enable_gnu_unique_object=yes
3831 if test x$enable_gnu_unique_object = xyes; then
3832 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
3833 [Define if your assembler supports @gnu_unique_object.])
3836 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3837 [gcc_cv_as_line_zero],
3838 [gcc_cv_as_line_zero=no
3839 if test $in_tree_gas = yes; then
3840 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3841 elif test "x$gcc_cv_as" != x; then
3842 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3843 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3844 test "x`cat conftest.out`" = x
3846 gcc_cv_as_line_zero=yes
3848 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3849 cat conftest.s >&AS_MESSAGE_LOG_FD
3850 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3851 cat conftest.out >&AS_MESSAGE_LOG_FD
3853 rm -f conftest.o conftest.s conftest.out
3855 if test "x$gcc_cv_as_line_zero" = xyes; then
3856 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3857 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3860 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3861 gcc_cv_ld_eh_frame_hdr=no
3862 if test $in_tree_ld = yes ; then
3863 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3864 && test $in_tree_ld_is_elf = yes; then
3865 gcc_cv_ld_eh_frame_hdr=yes
3867 elif test x$gcc_cv_ld != x; then
3868 # Check if linker supports --eh-frame-hdr option
3869 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3870 gcc_cv_ld_eh_frame_hdr=yes
3873 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3874 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3875 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3876 [Define if your linker supports --eh-frame-hdr option.])
3878 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3880 AC_MSG_CHECKING(linker position independent executable support)
3882 if test $in_tree_ld = yes ; then
3883 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3884 && test $in_tree_ld_is_elf = yes; then
3887 elif test x$gcc_cv_ld != x; then
3888 # Check if linker supports -pie option
3889 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3893 if test x"$gcc_cv_ld_pie" = xyes; then
3894 AC_DEFINE(HAVE_LD_PIE, 1,
3895 [Define if your linker supports -pie option.])
3897 AC_MSG_RESULT($gcc_cv_ld_pie)
3899 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3900 gcc_cv_ld_eh_gc_sections=no
3901 if test $in_tree_ld = yes ; then
3902 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3903 && test $in_tree_ld_is_elf = yes; then
3904 gcc_cv_ld_eh_gc_sections=yes
3906 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3907 cat > conftest.s <<EOF
3910 .type _start, @function
3913 .size _start, .-_start
3914 .section .text.foo,"ax",@progbits
3915 .type foo, @function
3919 .section .gcc_except_table.foo,"a",@progbits
3922 .section .eh_frame,"a",@progbits
3925 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3926 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3927 | grep "gc-sections option ignored" > /dev/null; then
3928 gcc_cv_ld_eh_gc_sections=no
3929 elif $gcc_cv_objdump -h conftest 2> /dev/null \
3930 | grep gcc_except_table > /dev/null; then
3931 gcc_cv_ld_eh_gc_sections=yes
3932 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3933 if test x$gcc_cv_as_comdat_group != xyes; then
3934 gcc_cv_ld_eh_gc_sections=no
3935 cat > conftest.s <<EOF
3938 .type _start, @function
3941 .size _start, .-_start
3942 .section .gnu.linkonce.t.foo,"ax",@progbits
3943 .type foo, @function
3947 .section .gcc_except_table.foo,"a",@progbits
3950 .section .eh_frame,"a",@progbits
3953 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3954 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3955 | grep "gc-sections option ignored" > /dev/null; then
3956 gcc_cv_ld_eh_gc_sections=no
3957 elif $gcc_cv_objdump -h conftest 2> /dev/null \
3958 | grep gcc_except_table > /dev/null; then
3959 gcc_cv_ld_eh_gc_sections=yes
3965 rm -f conftest.s conftest.o conftest
3969 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3970 gcc_cv_ld_eh_gc_sections=no
3973 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3974 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3975 [Define if your linker supports garbage collection of
3976 sections in presence of EH frames.])
3978 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3984 AC_CACHE_CHECK(linker --as-needed support,
3985 gcc_cv_ld_as_needed,
3986 [gcc_cv_ld_as_needed=no
3987 if test $in_tree_ld = yes ; then
3988 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3989 && test $in_tree_ld_is_elf = yes; then
3990 gcc_cv_ld_as_needed=yes
3992 elif test x$gcc_cv_ld != x; then
3993 # Check if linker supports --as-needed and --no-as-needed options
3994 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3995 gcc_cv_ld_as_needed=yes
3999 if test x"$gcc_cv_ld_as_needed" = xyes; then
4000 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4001 [Define if your linker supports --as-needed and --no-as-needed options.])
4004 case "$target:$tm_file" in
4005 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4006 AC_CACHE_CHECK(linker support for omitting dot symbols,
4007 gcc_cv_ld_no_dot_syms,
4008 [gcc_cv_ld_no_dot_syms=no
4009 if test $in_tree_ld = yes ; then
4010 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4011 gcc_cv_ld_no_dot_syms=yes
4013 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4014 cat > conftest1.s <<EOF
4018 cat > conftest2.s <<EOF
4019 .section ".opd","aw"
4024 .quad .LEfoo,.TOC.@tocbase,0
4030 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4031 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4032 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4033 gcc_cv_ld_no_dot_syms=yes
4035 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4038 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4039 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4040 [Define if your PowerPC64 linker only needs function descriptor syms.])
4043 AC_CACHE_CHECK(linker large toc support,
4044 gcc_cv_ld_large_toc,
4045 [gcc_cv_ld_large_toc=no
4046 if test $in_tree_ld = yes ; then
4047 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4048 gcc_cv_ld_large_toc=yes
4050 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4051 cat > conftest.s <<EOF
4052 .section ".tbss","awT",@nobits
4058 addis 9,13,ie0@got@tprel@ha
4059 ld 9,ie0@got@tprel@l(9)
4061 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4062 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4063 gcc_cv_ld_large_toc=yes
4065 rm -f conftest conftest.o conftest.s
4068 if test x"$gcc_cv_ld_large_toc" = xyes; then
4069 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4070 [Define if your PowerPC64 linker supports a large TOC.])
4075 AC_CACHE_CHECK(linker --build-id support,
4077 [gcc_cv_ld_buildid=no
4078 if test $in_tree_ld = yes ; then
4079 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4080 "$gcc_cv_gld_minor_version" -ge 18 -o \
4081 "$gcc_cv_gld_major_version" -gt 2 \
4082 && test $in_tree_ld_is_elf = yes; then
4083 gcc_cv_ld_buildid=yes
4085 elif test x$gcc_cv_ld != x; then
4086 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4087 gcc_cv_ld_buildid=yes
4090 if test x"$gcc_cv_ld_buildid" = xyes; then
4091 AC_DEFINE(HAVE_LD_BUILDID, 1,
4092 [Define if your linker supports --build-id.])
4095 AC_ARG_ENABLE(linker-build-id,
4096 [ --enable-linker-build-id
4097 compiler will always pass --build-id to linker],
4099 enable_linker_build_id=no)
4101 if test x"$enable_linker_build_id" = xyes; then
4102 if test x"$gcc_cv_ld_buildid" = xyes; then
4103 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4104 [Define if gcc should always pass --build-id to linker.])
4106 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4110 # In binutils 2.21, GNU ld gained support for new emulations fully
4111 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4112 AC_CACHE_CHECK(linker *_sol2 emulation support,
4113 gcc_cv_ld_sol2_emulation,
4114 [gcc_cv_ld_sol2_emulation=no
4115 if test $in_tree_ld = yes ; then
4116 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4117 "$gcc_cv_gld_minor_version" -ge 21 -o \
4118 "$gcc_cv_gld_major_version" -gt 2 \
4119 && test $in_tree_ld_is_elf = yes; then
4120 gcc_cv_ld_sol2_emulation=yes
4122 elif test x$gcc_cv_ld != x; then
4123 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4124 grep _sol2 > /dev/null; then
4125 gcc_cv_ld_sol2_emulation=yes
4128 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4129 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4130 [Define if your linker supports the *_sol2 emulations.])
4133 AC_CACHE_CHECK(linker --sysroot support,
4135 [gcc_cv_ld_sysroot=no
4136 if test $in_tree_ld = yes ; then
4137 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4138 gcc_cv_ld_sysroot=yes
4140 elif test x$gcc_cv_ld != x; then
4141 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4142 gcc_cv_ld_sysroot=yes
4145 if test x"$gcc_cv_ld_sysroot" = xyes; then
4146 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4147 [Define if your linker supports --sysroot.])
4150 if test x$with_sysroot = x && test x$host = x$target \
4151 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4152 && test "$prefix" != "NONE"; then
4153 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4154 [Define to PREFIX/include if cpp should also search that directory.])
4157 # Test for stack protector support in target C library.
4158 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4159 gcc_cv_libc_provides_ssp,
4160 [gcc_cv_libc_provides_ssp=no
4162 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4163 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4164 if test "x$with_headers" != x; then
4165 glibc_header_dir=$with_headers
4166 elif test "x$with_sysroot" = x; then
4167 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4168 elif test "x$with_build_sysroot" != "x"; then
4169 glibc_header_dir="${with_build_sysroot}/usr/include"
4170 elif test "x$with_sysroot" = xyes; then
4171 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4173 glibc_header_dir="${with_sysroot}/usr/include"
4176 glibc_header_dir=/usr/include
4178 [# glibc 2.4 and later provides __stack_chk_fail and
4179 # either __stack_chk_guard, or TLS access to stack guard canary.
4180 if test -f $glibc_header_dir/features.h \
4181 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4182 $glibc_header_dir/features.h > /dev/null; then
4183 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4184 $glibc_header_dir/features.h > /dev/null; then
4185 gcc_cv_libc_provides_ssp=yes
4186 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4187 $glibc_header_dir/features.h > /dev/null \
4188 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4189 $glibc_header_dir/features.h > /dev/null; then
4190 gcc_cv_libc_provides_ssp=yes
4191 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4192 $glibc_header_dir/features.h > /dev/null && \
4193 test -f $glibc_header_dir/bits/uClibc_config.h && \
4194 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4195 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
4196 gcc_cv_libc_provides_ssp=yes
4201 # Avoid complicated tests (see
4202 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4203 # simply assert that glibc does provide this, which is true for all
4204 # realistically usable GNU/Hurd configurations.
4205 gcc_cv_libc_provides_ssp=yes;;
4206 *-*-darwin* | *-*-freebsd*)
4207 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4208 [echo "no __stack_chk_fail on this target"])
4210 *) gcc_cv_libc_provides_ssp=no ;;
4213 if test x$gcc_cv_libc_provides_ssp = xyes; then
4214 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4215 [Define if your target C library provides stack protector support])
4218 # Check if TFmode long double should be used by default or not.
4219 # Some glibc targets used DFmode long double, but with glibc 2.4
4220 # and later they can use TFmode.
4222 powerpc*-*-linux* | \
4227 AC_ARG_WITH(long-double-128,
4228 [ --with-long-double-128 Use 128-bit long double by default.],
4229 gcc_cv_target_ldbl128="$with_long_double_128",
4230 [[gcc_cv_target_ldbl128=no
4231 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4232 if test "x$with_sysroot" = x; then
4233 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4234 elif test "x$with_build_sysroot" != "x"; then
4235 glibc_header_dir="${with_build_sysroot}/usr/include"
4236 elif test "x$with_sysroot" = xyes; then
4237 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4239 glibc_header_dir="${with_sysroot}/usr/include"
4242 glibc_header_dir=/usr/include
4244 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4245 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4246 && gcc_cv_target_ldbl128=yes
4250 if test x$gcc_cv_target_ldbl128 = xyes; then
4251 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4252 [Define if TFmode long double should be the default])
4255 # Find out what GC implementation we want, or may, use.
4257 [ --with-gc={page,zone} choose the garbage collection mechanism to use
4265 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4268 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4273 echo "Using $GGC for garbage collection."
4275 # Libraries to use on the host. This will normally be set by the top
4276 # level Makefile. Here we simply capture the value for our Makefile.
4277 if test -z "${HOST_LIBS+set}"; then
4282 # Use the system's zlib library.
4284 zlibinc="-I\$(srcdir)/../zlib"
4285 AC_ARG_WITH(system-zlib,
4286 [ --with-system-zlib use installed libz],
4293 dnl Very limited version of automake's enable-maintainer-mode
4295 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4296 dnl maintainer-mode is disabled by default
4297 AC_ARG_ENABLE(maintainer-mode,
4298 [ --enable-maintainer-mode
4299 enable make rules and dependencies not useful
4300 (and sometimes confusing) to the casual installer],
4301 maintainer_mode=$enableval,
4304 AC_MSG_RESULT($maintainer_mode)
4306 if test "$maintainer_mode" = "yes"; then
4317 # Make empty files to contain the specs and options for each language.
4318 # Then add #include lines to for a compiler that has specs and/or options.
4324 # These (without "all_") are set in each config-lang.in.
4325 # `language' must be a single word so is spelled singularly.
4328 all_outputs='Makefile gccbug'
4329 # List of language makefile fragments.
4331 # Additional files for gengtype
4332 all_gtfiles="$target_gtfiles"
4334 # These are the languages that are set in --enable-languages,
4335 # and are available in the GCC tree.
4336 all_selected_languages=
4338 # Add the language fragments.
4339 # Languages are added via two mechanisms. Some information must be
4340 # recorded in makefile variables, these are defined in config-lang.in.
4341 # We accumulate them and plug them into the main Makefile.
4342 # The other mechanism is a set of hooks for each of the main targets
4343 # like `clean', `install', etc.
4345 language_hooks="Make-hooks"
4347 for lang in ${srcdir}/*/config-lang.in
4350 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4352 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4353 if test "x$lang_alias" = x
4355 echo "$lang doesn't set \$language." 1>&2
4358 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4359 subdirs="$subdirs $subdir"
4361 # $gcc_subdir is where the gcc integration files are to be found
4362 # for a language, both for internal compiler purposes (compiler
4363 # sources implementing front-end to GCC tree converters), and for
4364 # build infrastructure purposes (Make-lang.in, etc.)
4366 # This will be <subdir> (relative to $srcdir) if a line like
4367 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4368 # is found in <langdir>/config-lang.in, and will remain <langdir>
4371 # Except for the language alias (fetched above), the regular
4372 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4373 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4374 # only this and the language alias.
4376 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4377 if [ "$gcc_subdir" = "" ]; then
4378 gcc_subdir="$subdir"
4381 case ",$enable_languages," in
4383 all_selected_languages="$all_selected_languages $lang_alias"
4384 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4385 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4397 . ${srcdir}/$gcc_subdir/config-lang.in
4398 if test "x$language" = x
4400 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4405 case ",$enable_languages," in
4408 for i in $subdir_requires; do
4409 test -f "${srcdir}/$i/config-lang.in" && continue
4417 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4418 if test -f $srcdir/$gcc_subdir/lang.opt; then
4419 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4421 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4422 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4424 all_languages="$all_languages $language"
4425 all_compilers="$all_compilers $compilers"
4426 all_outputs="$all_outputs $outputs"
4427 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4428 case ",$enable_languages," in
4430 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4432 AC_SUBST(enable_lto)
4433 # LTO needs to speak the platform's object file format, and has a
4434 # number of implementations of the required binary file access APIs.
4435 # ELF is the most common, and default. We only link libelf if ELF
4436 # is indeed the selected format.
4437 LTO_BINARY_READER=${lto_binary_reader}
4438 LTO_USE_LIBELF=-lelf
4439 if test "x$lto_binary_reader" != "xlto-elf" ; then
4442 AC_SUBST(LTO_BINARY_READER)
4443 AC_SUBST(LTO_USE_LIBELF)
4449 # Pick up gtfiles for c
4451 . ${srcdir}/c-config-lang.in
4452 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4455 for language in $all_selected_languages
4457 check_languages="$check_languages check-$language"
4460 # We link each language in with a set of hooks, reached indirectly via
4461 # lang.${target}. Only do so for selected languages.
4465 target_list="all.cross start.encap rest.encap tags \
4466 install-common install-man install-info install-pdf install-html dvi \
4467 pdf html uninstall info man srcextra srcman srcinfo \
4468 mostlyclean clean distclean maintainer-clean install-plugin"
4470 for t in $target_list
4473 for lang in $all_selected_languages
4477 echo "lang.$t: $x" >> Make-hooks
4486 echo "dir ." > .gdbinit
4487 echo "dir ${srcdir}" >> .gdbinit
4488 if test x$gdb_needs_out_file_path = xyes
4490 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4492 if test "x$subdirs" != x; then
4495 echo "dir ${srcdir}/$s" >> .gdbinit
4498 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4500 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4501 AC_SUBST(gcc_tooldir)
4504 # Find a directory in which to install a shared libgcc.
4506 AC_ARG_ENABLE(version-specific-runtime-libs,
4507 [ --enable-version-specific-runtime-libs
4508 specify that runtime libraries should be
4509 installed in a compiler-specific directory])
4511 AC_ARG_WITH(slibdir,
4512 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
4513 slibdir="$with_slibdir",
4514 if test "${enable_version_specific_runtime_libs+set}" = set; then
4515 slibdir='$(libsubdir)'
4516 elif test "$host" != "$target"; then
4517 slibdir='$(build_tooldir)/lib'
4523 # Substitute configuration variables
4526 AC_SUBST(all_compilers)
4527 AC_SUBST(all_gtfiles)
4528 AC_SUBST(all_lang_makefrags)
4529 AC_SUBST(all_languages)
4530 AC_SUBST(all_selected_languages)
4531 AC_SUBST(build_exeext)
4532 AC_SUBST(build_install_headers_dir)
4533 AC_SUBST(build_xm_file_list)
4534 AC_SUBST(build_xm_include_list)
4535 AC_SUBST(build_xm_defines)
4536 AC_SUBST(build_file_translate)
4537 AC_SUBST(check_languages)
4538 AC_SUBST(cpp_install_dir)
4539 AC_SUBST(xmake_file)
4540 AC_SUBST(tmake_file)
4541 AC_SUBST(TM_ENDIAN_CONFIG)
4542 AC_SUBST(TM_MULTILIB_CONFIG)
4543 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4544 AC_SUBST(extra_gcc_objs)
4545 AC_SUBST(user_headers_inc_next_pre)
4546 AC_SUBST(user_headers_inc_next_post)
4547 AC_SUBST(extra_headers_list)
4548 AC_SUBST(extra_objs)
4549 AC_SUBST(extra_parts)
4550 AC_SUBST(extra_passes)
4551 AC_SUBST(extra_programs)
4552 AC_SUBST(float_h_file)
4553 AC_SUBST(gcc_config_arguments)
4554 AC_SUBST(gcc_gxx_include_dir)
4555 AC_SUBST(host_exeext)
4556 AC_SUBST(host_xm_file_list)
4557 AC_SUBST(host_xm_include_list)
4558 AC_SUBST(host_xm_defines)
4559 AC_SUBST(out_host_hook_obj)
4561 AC_SUBST(lang_opt_files)
4562 AC_SUBST(lang_specs_files)
4563 AC_SUBST(lang_tree_files)
4564 AC_SUBST(local_prefix)
4566 AC_SUBST(objc_boehm_gc)
4568 AC_SUBST(out_object_file)
4569 AC_SUBST(thread_file)
4570 AC_SUBST(tm_file_list)
4571 AC_SUBST(tm_include_list)
4572 AC_SUBST(tm_defines)
4573 AC_SUBST(tm_p_file_list)
4574 AC_SUBST(tm_p_include_list)
4575 AC_SUBST(xm_file_list)
4576 AC_SUBST(xm_include_list)
4577 AC_SUBST(xm_defines)
4578 AC_SUBST(use_gcc_stdint)
4579 AC_SUBST(c_target_objs)
4580 AC_SUBST(cxx_target_objs)
4581 AC_SUBST(fortran_target_objs)
4582 AC_SUBST(target_cpu_default)
4584 AC_SUBST_FILE(language_hooks)
4587 if test x${build} = x${host} ; then
4588 if test x${host} = x${target} ; then
4589 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4591 echo "Links are now set up to build a cross-compiler" 1>&2
4592 echo " from ${host} to ${target}." 1>&2
4595 if test x${host} = x${target} ; then
4596 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4597 echo " for ${target}." 1>&2
4599 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4600 echo " from ${host} to ${target}." 1>&2
4604 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4605 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4607 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4608 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4610 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4611 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4612 if test "x${CLOOGLIBS}" != "x" ; then
4613 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4616 AC_ARG_VAR(LIBELFLIBS,[How to link libelf])
4617 AC_ARG_VAR(LIBELFINC,[How to find libelf include files])
4618 if test "x${LIBELFLIBS}" != "x" ; then
4619 AC_DEFINE(HAVE_libelf, 1, [Define if libelf is in use.])
4622 # Check for plugin support
4623 AC_ARG_ENABLE(plugin,
4624 [ --enable-plugin enable plugin support],
4625 enable_plugin=$enableval,
4626 enable_plugin=yes; default_plugin=yes)
4629 if test x"$enable_plugin" = x"yes"; then
4633 export_sym_check="$gcc_cv_nm -g"
4636 export_sym_check="$gcc_cv_objdump -T"
4639 AC_MSG_CHECKING([for exported symbols])
4640 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4641 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4642 if $export_sym_check conftest | grep foobar > /dev/null; then
4643 : # No need to use a flag
4645 AC_MSG_CHECKING([for -rdynamic])
4646 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
4647 if $export_sym_check conftest | grep foobar > /dev/null; then
4649 pluginlibs="-rdynamic"
4654 AC_MSG_RESULT([$plugin_rdynamic])
4659 AC_SEARCH_LIBS([dlopen], [dl])
4660 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
4661 pluginlibs="$pluginlibs -ldl"
4665 # Check that we can build shared objects with -fPIC -shared
4666 saved_LDFLAGS="$LDFLAGS"
4669 LDFLAGS="$LDFLAGS -fPIC -shared -undefined dynamic_lookup"
4672 LDFLAGS="$LDFLAGS -fPIC -shared"
4675 AC_MSG_CHECKING([for -fPIC -shared])
4677 [extern int X;],[return X == 0;],
4678 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
4679 [AC_MSG_RESULT([no]); have_pic_shared=no])
4680 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
4684 LDFLAGS="$saved_LDFLAGS"
4686 # If plugin support had been requested but not available, fail.
4687 if test x"$enable_plugin" = x"no" ; then
4688 if test x"$default_plugin" != x"yes"; then
4690 Building GCC with plugin support requires a host that supports
4691 -fPIC, -shared, -ldl and -rdynamic.])
4696 AC_SUBST(pluginlibs)
4697 AC_SUBST(enable_plugin)
4698 if test x"$enable_plugin" = x"yes"; then
4699 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
4702 # Configure the subdirectories
4703 # AC_CONFIG_SUBDIRS($subdirs)
4705 # Create the Makefile
4706 # and configure language subdirectories
4707 AC_CONFIG_FILES($all_outputs)
4709 AC_CONFIG_COMMANDS([default],
4711 case ${CONFIG_HEADERS} in
4712 *auto-host.h:config.in*)
4715 # Make sure all the subdirs exist.
4716 for d in $subdirs doc build c-family
4718 test -d $d || mkdir $d
4721 [subdirs='$subdirs'])