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 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 ($DEFAULT_ASSEMBLER - GNU as)])
267 # If a non-executable a.out is present (e.g. created by GNU as above even if
268 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
269 # file, even when creating an executable, so an execution test fails.
270 # Remove possible default executable files to avoid this.
272 # FIXME: This really belongs into AC_PROG_CC and can be removed once
273 # Autoconf includes it.
274 rm -f a.out a.exe b.out
276 # Find the native compiler
279 ACX_PROG_GNAT([-I"$srcdir"/ada])
281 # autoconf is lame and doesn't give us any substitution variable for this.
282 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
283 NO_MINUS_C_MINUS_O=yes
285 OUTPUT_OPTION='-o $@'
287 AC_SUBST(NO_MINUS_C_MINUS_O)
288 AC_SUBST(OUTPUT_OPTION)
290 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
291 # optimizations to be activated explicitly by the toplevel.
294 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
298 # -------------------------
299 # Check C compiler features
300 # -------------------------
302 AC_USE_SYSTEM_EXTENSIONS
306 # sizeof(char) is 1 by definition.
307 AC_CHECK_SIZEOF(void *)
308 AC_CHECK_SIZEOF(short)
310 AC_CHECK_SIZEOF(long)
311 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
312 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
314 # ---------------------
315 # Warnings and checking
316 # ---------------------
318 # Check $CC warning features (if it's GCC).
319 # We want to use -pedantic, but we don't want warnings about
323 # So, we only use -pedantic if we can disable those warnings.
325 ACX_PROG_CC_WARNING_OPTS(
326 m4_quote(m4_do([-W -Wall -Wwrite-strings -Wstrict-prototypes ],
327 [-Wmissing-prototypes -Wcast-qual])), [loose_warn])
328 ACX_PROG_CC_WARNING_OPTS(
329 m4_quote(m4_do([-Wold-style-definition -Wc++-compat ],
330 [-Wmissing-format-attribute])), [strict_warn])
331 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
332 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
333 [-Wno-overlength-strings])), [strict_warn])
334 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
336 # The above macros do nothing if the compiler is not GCC. However, the
337 # Makefile has more goo to add other flags, so this variabl is used to
338 # enables warnings only for GCC.
340 if test "x$GCC" = "xyes"; then
341 warn_cflags='$(GCC_WARN_CFLAGS)'
343 AC_SUBST(warn_cflags)
345 # Enable expensive internal checks
347 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
351 AC_ARG_ENABLE(checking,
352 [ --enable-checking[=LIST]
353 enable expensive run-time checks. With LIST,
354 enable only specific categories of checks.
355 Categories are: yes,no,all,none,release.
356 Flags are: assert,df,fold,gc,gcac,gimple,misc,
357 rtlflag,rtl,runtime,tree,valgrind,types.],
358 [ac_checking_flags="${enableval}"],[
359 # Determine the default checks.
360 if test x$is_release = x ; then
361 ac_checking_flags=yes
363 ac_checking_flags=release
365 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
366 for check in release $ac_checking_flags
369 # these set all the flags to specific states
370 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
371 ac_fold_checking= ; ac_gc_checking=1 ;
372 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
373 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
374 ac_tree_checking=1 ; ac_valgrind_checking= ;
375 ac_types_checking=1 ;;
376 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
377 ac_fold_checking= ; ac_gc_checking= ;
378 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
379 ac_rtlflag_checking= ; ac_runtime_checking= ;
380 ac_tree_checking= ; ac_valgrind_checking= ;
381 ac_types_checking= ;;
382 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
383 ac_fold_checking=1 ; ac_gc_checking=1 ;
384 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
385 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
386 ac_tree_checking=1 ; ac_valgrind_checking= ;
387 ac_types_checking=1 ;;
388 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
389 ac_fold_checking= ; ac_gc_checking= ;
390 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
391 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
392 ac_tree_checking= ; ac_valgrind_checking= ;
393 ac_types_checking= ;;
394 # these enable particular checks
395 assert) ac_assert_checking=1 ;;
396 df) ac_df_checking=1 ;;
397 fold) ac_fold_checking=1 ;;
398 gc) ac_gc_checking=1 ;;
399 gcac) ac_gc_always_collect=1 ;;
400 gimple) ac_gimple_checking=1 ;;
401 misc) ac_checking=1 ;;
402 rtl) ac_rtl_checking=1 ;;
403 rtlflag) ac_rtlflag_checking=1 ;;
404 runtime) ac_runtime_checking=1 ;;
405 tree) ac_tree_checking=1 ;;
406 types) ac_types_checking=1 ;;
407 valgrind) ac_valgrind_checking=1 ;;
408 *) AC_MSG_ERROR(unknown check category $check) ;;
414 if test x$ac_checking != x ; then
415 AC_DEFINE(ENABLE_CHECKING, 1,
416 [Define if you want more run-time sanity checks. This one gets a grab
417 bag of miscellaneous but relatively cheap checks.])
418 nocommon_flag=-fno-common
420 AC_SUBST(nocommon_flag)
421 if test x$ac_df_checking != x ; then
422 AC_DEFINE(ENABLE_DF_CHECKING, 1,
423 [Define if you want more run-time sanity checks for dataflow.])
425 if test x$ac_assert_checking != x ; then
426 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
427 [Define if you want assertions enabled. This is a cheap check.])
429 if test x$ac_gimple_checking != x ; then
430 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
431 [Define if you want operations on GIMPLE (the basic data structure of
432 the high-level optimizers) to be checked for dynamic type safety at
433 runtime. This is moderately expensive.])
435 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
436 if test x$ac_runtime_checking != x ; then
437 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
438 [Define if you want runtime assertions enabled. This is a cheap check.])
440 if test x$ac_tree_checking != x ; then
441 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
442 [Define if you want all operations on trees (the basic data
443 structure of the front ends) to be checked for dynamic type safety
444 at runtime. This is moderately expensive. The tree browser debugging
445 routines will also be enabled by this option.
447 TREEBROWSER=tree-browser.o
449 if test x$ac_types_checking != x ; then
450 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
451 [Define if you want all gimple types to be verified after gimplifiation.
455 AC_SUBST(TREEBROWSER)
456 if test x$ac_rtl_checking != x ; then
457 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
458 [Define if you want all operations on RTL (the basic data structure
459 of the optimizer and back end) to be checked for dynamic type safety
460 at runtime. This is quite expensive.])
462 if test x$ac_rtlflag_checking != x ; then
463 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
464 [Define if you want RTL flag accesses to be checked against the RTL
465 codes that are supported for each access macro. This is relatively
468 if test x$ac_gc_checking != x ; then
469 AC_DEFINE(ENABLE_GC_CHECKING, 1,
470 [Define if you want the garbage collector to do object poisoning and
471 other memory allocation checks. This is quite expensive.])
473 if test x$ac_gc_always_collect != x ; then
474 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
475 [Define if you want the garbage collector to operate in maximally
476 paranoid mode, validating the entire heap and collecting garbage at
477 every opportunity. This is extremely expensive.])
479 if test x$ac_fold_checking != x ; then
480 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
481 [Define if you want fold checked that it never destructs its argument.
482 This is quite expensive.])
484 valgrind_path_defines=
487 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
488 dnl # an if statement. This was the source of very frustrating bugs
489 dnl # in converting to autoconf 2.5x!
490 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
492 if test x$ac_valgrind_checking != x ; then
493 # It is certainly possible that there's valgrind but no valgrind.h.
494 # GCC relies on making annotations so we must have both.
495 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
496 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
497 [[#include <valgrind/memcheck.h>
498 #ifndef VALGRIND_DISCARD
499 #error VALGRIND_DISCARD not defined
501 [gcc_cv_header_valgrind_memcheck_h=yes],
502 [gcc_cv_header_valgrind_memcheck_h=no])
503 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
504 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
505 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
506 [[#include <memcheck.h>
507 #ifndef VALGRIND_DISCARD
508 #error VALGRIND_DISCARD not defined
510 [gcc_cv_header_memcheck_h=yes],
511 [gcc_cv_header_memcheck_h=no])
512 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
513 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
514 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
515 if test "x$valgrind_path" = "x" \
516 || (test $have_valgrind_h = no \
517 && test $gcc_cv_header_memcheck_h = no \
518 && test $gcc_cv_header_valgrind_memcheck_h = no); then
519 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
521 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
522 valgrind_command="$valgrind_path -q"
523 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
524 [Define if you want to run subprograms and generated programs
525 through valgrind (a memory checker). This is extremely expensive.])
526 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
527 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
528 [Define if valgrind's valgrind/memcheck.h header is installed.])
530 if test $gcc_cv_header_memcheck_h = yes; then
531 AC_DEFINE(HAVE_MEMCHECK_H, 1,
532 [Define if valgrind's memcheck.h header is installed.])
535 AC_SUBST(valgrind_path_defines)
536 AC_SUBST(valgrind_command)
538 # Enable code coverage collection
539 AC_ARG_ENABLE(coverage,
540 [ --enable-coverage[=LEVEL]
541 enable compiler's code coverage collection.
542 Use to measure compiler performance and locate
543 unused parts of the compiler. With LEVEL, specify
544 optimization. Values are opt, noopt,
546 [case "${enableval}" in
548 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
551 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
554 # a.k.a. --disable-coverage
558 AC_MSG_ERROR(unknown coverage setting $enableval)
562 AC_SUBST(coverage_flags)
564 AC_ARG_ENABLE(gather-detailed-mem-stats,
565 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
566 [enable_gather_detailed_mem_stats=no])
567 if test x$enable_gather_detailed_mem_stats = xyes ; then
568 AC_DEFINE(GATHER_STATISTICS, 1,
569 [Define to enable detailed memory allocation stats gathering.])
572 # -------------------------------
573 # Miscenalleous configure options
574 # -------------------------------
578 [ --with-stabs arrange to use stabs instead of host debug format],
582 # Determine whether or not multilibs are enabled.
583 AC_ARG_ENABLE(multilib,
584 [ --enable-multilib enable library support for multiple ABIs],
585 [], [enable_multilib=yes])
586 AC_SUBST(enable_multilib)
588 # Enable __cxa_atexit for C++.
589 AC_ARG_ENABLE(__cxa_atexit,
590 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
593 # Enable C extension for decimal float if target supports it.
594 AC_ARG_ENABLE(decimal-float,
595 [ --enable-decimal-float={no,yes,bid,dpd}
596 enable decimal float extension to C. Selecting 'bid'
597 or 'dpd' choses which decimal floating point format
600 case $enable_decimal_float in
601 yes | no | bid | dpd) ;;
602 *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
603 Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
608 powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
609 enable_decimal_float=yes
612 AC_MSG_WARN(decimal float is not supported for this target, ignored)
613 enable_decimal_float=no
618 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
619 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
620 [Define to 1 to enable decimal float extension to C.])
622 # x86's use BID format instead of DPD
623 case x$enable_decimal_float in
626 i?86*-*-linux* | x86_64*-*-linux*)
627 enable_decimal_float=bid
630 enable_decimal_float=dpd
635 # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
636 # dependency on libdecnumber.
637 enable_decimal_float=dpd
640 AC_SUBST(enable_decimal_float)
642 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
643 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
644 [Define to 1 to specify that we are using the BID decimal floating
645 point format instead of DPD])
647 # Enable C extension for fixed-point arithmetic.
648 AC_ARG_ENABLE(fixed-point,
649 [ --enable-fixed-point enable fixed-point arithmetic extension to C],
657 AC_MSG_WARN(fixed-point is not supported on IRIX, ignored)
658 enable_fixed_point=no
661 enable_fixed_point=yes
666 AC_MSG_WARN(fixed-point is not supported for this target, ignored)
667 enable_fixed_point=no
671 AC_SUBST(enable_fixed_point)
673 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
674 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
675 [Define to 1 to enable fixed-point arithmetic extension to C.])
678 # Pass with no value to take the default
679 # Pass with a value to specify a thread package
680 AC_ARG_ENABLE(threads,
681 [ --enable-threads enable thread usage for target GCC
682 --enable-threads=LIB use LIB thread package for target GCC],,
686 [ --enable-tls enable or disable generation of tls code
687 overriding the assembler check for tls support],
691 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
692 Valid choices are 'yes' and 'no'.]) ;;
696 AC_ARG_ENABLE(objc-gc,
697 [ --enable-objc-gc enable the use of Boehm's garbage collector with
698 the GNU Objective-C runtime],
699 if test x$enable_objc_gc = xno; then
707 [ --with-dwarf2 force the default debug format to be DWARF 2],
708 dwarf2="$with_dwarf2",
711 AC_ARG_ENABLE(shared,
712 [ --disable-shared don't provide a shared libgcc],
714 case $enable_shared in
718 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
719 for pkg in $enableval; do
720 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
727 ], [enable_shared=yes])
728 AC_SUBST(enable_shared)
730 AC_ARG_WITH(build-sysroot,
731 [ --with-build-sysroot=sysroot
732 use sysroot as the system root during the build])
735 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
737 case ${with_sysroot} in
738 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
739 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
742 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
743 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
745 if test "x$prefix" = xNONE; then
746 test_prefix=/usr/local
750 if test "x$exec_prefix" = xNONE; then
751 test_exec_prefix=$test_prefix
753 test_exec_prefix=$exec_prefix
755 case ${TARGET_SYSTEM_ROOT} in
756 "${test_prefix}"|"${test_prefix}/"*|\
757 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
758 '${prefix}'|'${prefix}/'*|\
759 '${exec_prefix}'|'${exec_prefix}/'*)
760 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
761 TARGET_SYSTEM_ROOT_DEFINE="$t"
766 TARGET_SYSTEM_ROOT_DEFINE=
767 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
769 AC_SUBST(TARGET_SYSTEM_ROOT)
770 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
771 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
773 # Build with intermodule optimisations
774 AC_ARG_ENABLE(intermodule,
775 [ --enable-intermodule build the compiler in one step],
776 [case ${enable_intermodule} in
777 yes) onestep="-onestep";;
783 ACX_PKGVERSION([GCC])
784 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
786 # Sanity check enable_languages in case someone does not run the toplevel
787 # configure # script.
788 AC_ARG_ENABLE(languages,
789 [ --enable-languages=LIST specify which front-ends to build],
790 [case ,${enable_languages}, in
792 # go safe -- we cannot be much sure without the toplevel
794 # analysis of which target libs are present and usable
798 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
803 enable_languages=c,${enable_languages}
806 [enable_languages=c])
808 # Used by documentation targets
809 AC_SUBST(datarootdir)
813 AC_ARG_WITH(multilib-list,
814 [ --with-multilib-list Select multilibs (SH only)],
816 with_multilib_list=default)
818 # -------------------------
819 # Checks for other programs
820 # -------------------------
824 # Find some useful tools
826 # We need awk to create options.c and options.h.
827 # Bail out if it's missing.
829 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
837 # By default, the Darwin ranlib will not treat common symbols as
838 # definitions when building the archive table of contents. Other
839 # ranlibs do that; pass an option to the Darwin ranlib that makes
840 # it behave similarly.
846 AC_SUBST(ranlib_flags)
850 # See if cmp has --ignore-initial.
851 gcc_AC_PROG_CMP_IGNORE_INITIAL
853 # See if we have the mktemp command.
854 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
856 # See if makeinfo has been installed and is modern enough
857 # that we can use it.
858 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
859 [GNU texinfo.* \([0-9][0-9.]*\)],
860 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
861 if test $gcc_cv_prog_makeinfo_modern = no; then
863 *** Makeinfo is missing or too old.
864 *** Info documentation will not be built.])
871 # Is pod2man recent enough to regenerate manpages?
872 AC_MSG_CHECKING([for recent Pod::Man])
873 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
875 GENERATED_MANPAGES=generated-manpages
880 AC_SUBST(GENERATED_MANPAGES)
882 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
885 dnl Don't use AC_PROG_LEX; we insist on flex.
886 dnl LEXLIB is not useful in gcc.
887 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
890 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
892 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
893 # check for build == host before using them.
896 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
897 && test -d ../binutils ; then
898 NM='$(objdir)/../binutils/nm-new'
900 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
904 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
905 && test -d ../binutils ; then
906 AR='$(objdir)/../binutils/ar'
908 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
912 # --------------------
913 # Checks for C headers
914 # --------------------
916 # Need to reject headers which give warnings, so that the -Werror bootstrap
917 # works later. *sigh* This needs to come before all header checks.
924 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
925 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
926 sys/resource.h sys/param.h sys/times.h sys/stat.h \
927 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
929 # Check for thread headers.
930 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
931 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
933 # These tests can't be done till we know if we have limits.h.
942 # These libraries may be used by collect2.
943 # We may need a special search path to get them linked.
944 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
946 for libs in '' -lld -lmld \
947 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
948 '-L/usr/lib/cmplrs/cc3.11 -lmld'
951 AC_TRY_LINK_FUNC(ldopen,
952 [gcc_cv_collect2_libs="$libs"; break])
955 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
956 case $gcc_cv_collect2_libs in
958 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
960 AC_SUBST(COLLECT2_LIBS)
962 # When building Ada code on Alpha, we need exc_resume which is usually in
963 # -lexc. So test for it.
966 AC_SEARCH_LIBS(exc_resume, exc)
969 AC_SUBST(GNAT_LIBEXC)
971 # Some systems put ldexp and frexp in libm instead of libc; assume
972 # they're both in the same place. jcf-dump needs them.
975 AC_SEARCH_LIBS(ldexp, m)
980 # Use <inttypes.h> only if it exists,
981 # doesn't clash with <sys/types.h>, and declares intmax_t.
982 AC_MSG_CHECKING(for inttypes.h)
983 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
984 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
985 [[#include <sys/types.h>
986 #include <inttypes.h>]],
987 [[intmax_t i = -1;]])],
988 [gcc_cv_header_inttypes_h=yes],
989 [gcc_cv_header_inttypes_h=no])])
990 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
991 if test $gcc_cv_header_inttypes_h = yes; then
992 AC_DEFINE(HAVE_INTTYPES_H, 1,
993 [Define if you have a working <inttypes.h> header file.])
996 dnl Disabled until we have a complete test for buggy enum bitfields.
997 dnl gcc_AC_C_ENUM_BF_UNSIGNED
999 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1000 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1001 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1002 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1003 putchar_unlocked putc_unlocked)
1004 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1005 sysconf strsignal getrusage nl_langinfo \
1006 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1009 if test x$ac_cv_func_mbstowcs = xyes; then
1010 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1011 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1017 [gcc_cv_func_mbstowcs_works=yes],
1018 [gcc_cv_func_mbstowcs_works=no],
1019 [gcc_cv_func_mbstowcs_works=yes])])
1020 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1021 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1022 [Define this macro if mbstowcs does not crash when its
1023 first argument is NULL.])
1027 AC_CHECK_TYPE(ssize_t, int)
1028 AC_CHECK_TYPE(caddr_t, char *)
1030 gcc_AC_FUNC_MMAP_BLACKLIST
1034 # Under VMS, vfork works very differently than on Unix. The standard test
1035 # won't work, and it isn't easily adaptable. It makes more sense to
1037 ac_cv_func_vfork_works=yes
1043 # Until we have in-tree GNU iconv:
1045 AC_SUBST(LIBICONV_DEP)
1051 # We will need to find libiberty.h and ansidecl.h
1052 saved_CFLAGS="$CFLAGS"
1053 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1054 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1055 strsignal strstr strverscmp \
1056 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1057 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1058 #include "ansidecl.h"
1059 #include "system.h"])
1061 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1062 #include "ansidecl.h"
1064 #ifdef HAVE_SYS_RESOURCE_H
1065 #include <sys/resource.h>
1069 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1070 #include "ansidecl.h"
1072 #ifdef HAVE_SYS_RESOURCE_H
1073 #include <sys/resource.h>
1075 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1076 [Define to `long' if <sys/resource.h> doesn't define.])])
1078 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1079 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1080 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1081 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1082 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1083 #include "ansidecl.h"
1092 gcc_AC_CHECK_DECLS(times, , ,[
1093 #include "ansidecl.h"
1095 #ifdef HAVE_SYS_TIMES_H
1096 #include <sys/times.h>
1100 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1101 #include "ansidecl.h"
1106 # More time-related stuff.
1107 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1108 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1109 #include "ansidecl.h"
1111 #ifdef HAVE_SYS_TIMES_H
1112 #include <sys/times.h>
1114 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1115 if test $ac_cv_struct_tms = yes; then
1116 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1117 [Define if <sys/times.h> defines struct tms.])
1120 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1121 # revisit after autoconf 2.50.
1122 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1123 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1124 #include "ansidecl.h"
1126 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1127 if test $gcc_cv_type_clock_t = yes; then
1128 AC_DEFINE(HAVE_CLOCK_T, 1,
1129 [Define if <time.h> defines clock_t.])
1132 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1133 CFLAGS="$saved_CFLAGS"
1135 gcc_AC_INITFINI_ARRAY
1137 # mkdir takes a single argument on some systems.
1138 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1146 # With Setjmp/Longjmp based exception handling.
1147 AC_ARG_ENABLE(sjlj-exceptions,
1148 [ --enable-sjlj-exceptions
1149 arrange to use setjmp/longjmp exception handling],
1152 if test $enableval != yes; then
1153 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1158 force_sjlj_exceptions=yes],
1161 force_sjlj_exceptions=yes
1165 force_sjlj_exceptions=no
1168 if test $force_sjlj_exceptions = yes; then
1169 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1170 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1171 [Define 0/1 to force the choice for exception handling model.])
1174 # For platforms with the unwind ABI which includes an unwind library,
1175 # libunwind, we can choose to use the system libunwind.
1176 # config.gcc also contains tests of with_system_libunwind.
1177 GCC_CHECK_UNWIND_GETIPINFO
1179 # --------------------------------------------------------
1180 # Build, host, and target specific configuration fragments
1181 # --------------------------------------------------------
1183 # Collect build-machine-specific information.
1184 . ${srcdir}/config.build
1186 # Collect host-machine-specific information.
1187 . ${srcdir}/config.host
1191 # Collect target-machine-specific information.
1192 . ${srcdir}/config.gcc
1194 extra_objs="${host_extra_objs} ${extra_objs}"
1195 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1197 # Default the target-machine variables that were not explicitly set.
1198 if test x"$tm_file" = x
1199 then tm_file=$cpu_type/$cpu_type.h; fi
1201 if test x"$extra_headers" = x
1202 then extra_headers=; fi
1204 if test x$md_file = x
1205 then md_file=$cpu_type/$cpu_type.md; fi
1207 if test x$out_file = x
1208 then out_file=$cpu_type/$cpu_type.c; fi
1210 if test x"$tmake_file" = x
1211 then tmake_file=$cpu_type/t-$cpu_type
1214 if test x"$dwarf2" = xyes
1215 then tm_file="$tm_file tm-dwarf2.h"
1218 # Say what files are being used for the output code and MD file.
1219 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1220 echo "Using \`$srcdir/config/$md_file' as machine description file."
1222 # If any of the xm_file variables contain nonexistent files, warn
1223 # about them and drop them.
1226 for x in $build_xm_file; do
1227 if test -f $srcdir/config/$x
1229 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1235 for x in $host_xm_file; do
1236 if test -f $srcdir/config/$x
1238 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1244 for x in $xm_file; do
1245 if test -f $srcdir/config/$x
1247 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1253 for f in $tm_file; do
1256 if test $count = ax; then
1257 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1259 echo "Using the following target machine macro files:"
1260 for f in $tm_file; do
1261 echo " $srcdir/config/$f"
1265 if test x$need_64bit_hwint = xyes; then
1266 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1267 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1270 if test x$use_long_long_for_widest_fast_int = xyes; then
1271 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1272 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1273 efficiently supported by the host hardware.])
1277 for f in $host_xm_file; do
1280 if test $count = a; then
1282 elif test $count = ax; then
1283 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1285 echo "Using the following host machine macro files:"
1286 for f in $host_xm_file; do
1287 echo " $srcdir/config/$f"
1290 echo "Using ${out_host_hook_obj} for host machine hooks."
1292 if test "$host_xm_file" != "$build_xm_file"; then
1294 for f in $build_xm_file; do
1297 if test $count = a; then
1299 elif test $count = ax; then
1300 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1302 echo "Using the following build machine macro files:"
1303 for f in $build_xm_file; do
1304 echo " $srcdir/config/$f"
1311 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1312 gcc_cv_mcontext_underscores,
1314 #include <sys/cdefs.h>
1315 #include <sys/signal.h>
1316 #include <ucontext.h>
1317 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1319 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1320 if test $gcc_cv_mcontext_underscores = yes; then
1321 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1322 [mcontext_t fields start with __])
1331 # Check if a valid thread package
1332 case ${enable_threads} in
1335 target_thread_file='single'
1339 target_thread_file='single'
1341 aix | dce | gnat | irix | posix | posix95 | rtems | \
1342 single | solaris | vxworks | win32 | mipssde)
1343 target_thread_file=${enable_threads}
1346 echo "${enable_threads} is an unknown thread package" 1>&2
1351 if test x${thread_file} = x; then
1352 # No thread file set by target-specific clauses in config.gcc,
1353 # so use file chosen by default logic above
1354 thread_file=${target_thread_file}
1357 # Make gthr-default.h if we have a thread file.
1359 if test $thread_file != single; then
1360 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1361 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1362 rm -f gthr-default.h-t
1364 mv -f gthr-default.h-t gthr-default.h
1366 gthread_flags=-DHAVE_GTHR_DEFAULT
1368 AC_SUBST(gthread_flags)
1375 if test x$enable___cxa_atexit = xyes || \
1376 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1377 if test x$host = x$target; then
1379 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1380 # keyed to flag_use_cxa_atexit
1385 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1386 [echo "__cxa_atexit can't be enabled on this target"])
1390 # We can't check for __cxa_atexit when building a cross, so assume
1394 if test x$use_cxa_atexit = xyes; then
1395 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1396 [Define if you want to use __cxa_atexit, rather than atexit, to
1397 register C++ destructors for local statics and global objects.
1398 This is essential for fully standards-compliant handling of
1399 destructors, but requires __cxa_atexit in libc.])
1403 # Look for a file containing extra machine modes.
1404 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1405 extra_modes_file='$(srcdir)'/config/${extra_modes}
1406 AC_SUBST(extra_modes_file)
1407 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1408 [Define to the name of a file containing a list of extra machine modes
1409 for this architecture.])
1412 # Convert extra_options into a form suitable for Makefile use.
1414 for f in $extra_options; do
1415 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1417 AC_SUBST(extra_opt_files)
1419 # auto-host.h is the file containing items generated by autoconf and is
1420 # the first file included by config.h.
1421 # If host=build, it is correct to have bconfig include auto-host.h
1422 # as well. If host!=build, we are in error and need to do more
1423 # work to find out the build config parameters.
1424 if test x$host = x$build
1426 build_auto=auto-host.h
1428 # We create a subdir, then run autoconf in the subdir.
1429 # To prevent recursion we set host and build for the new
1430 # invocation of configure to the build for this invocation
1437 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1438 *) realsrcdir=../${srcdir};;
1440 saved_CFLAGS="${CFLAGS}"
1441 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1442 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1443 ${realsrcdir}/configure \
1444 --enable-languages=${enable_languages-all} \
1445 --target=$target_alias --host=$build_alias --build=$build_alias
1446 CFLAGS="${saved_CFLAGS}"
1448 # We just finished tests for the build machine, so rename
1449 # the file auto-build.h in the gcc directory.
1450 mv auto-host.h ../auto-build.h
1453 build_auto=auto-build.h
1455 AC_SUBST(build_subdir)
1457 tm_file="${tm_file} defaults.h"
1458 tm_p_file="${tm_p_file} tm-preds.h"
1459 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1460 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1461 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1462 # put this back in temporarily.
1463 xm_file="auto-host.h ansidecl.h ${xm_file}"
1470 # Compile in configure arguments.
1471 if test -f configargs.h ; then
1472 # Being re-configured.
1473 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1474 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1476 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1479 # Double all backslashes and backslash all quotes to turn
1480 # gcc_config_arguments into a C string.
1481 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1482 $gcc_config_arguments
1484 gcc_config_arguments_str=`cat conftest.out`
1487 cat > configargs.h <<EOF
1488 /* Generated automatically. */
1489 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1490 static const char thread_model[] = "$thread_file";
1492 static const struct {
1493 const char *name, *value;
1494 } configure_default_options[] = $configure_default_options;
1499 gcc_BASEVER=`cat $srcdir/BASE-VER`
1500 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1501 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1502 if test -f $srcdir/REVISION ; then
1503 gcc_REVISION=`cat $srcdir/REVISION`
1507 cat > plugin-version.h <<EOF
1508 #include "configargs.h"
1510 static char basever[] = "$gcc_BASEVER";
1511 static char datestamp[] = "$gcc_DATESTAMP";
1512 static char devphase[] = "$gcc_DEVPHASE";
1513 static char revision[] = "$gcc_REVISION";
1515 /* FIXME plugins: We should make the version information more precise.
1516 One way to do is to add a checksum. */
1518 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1520 configuration_arguments};
1524 # Internationalization
1525 ZW_GNU_GETTEXT_SISTER_DIR
1527 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1528 # -liconv on the link line twice.
1529 case "$LIBINTL" in *$LIBICONV*)
1533 AC_ARG_ENABLE(secureplt,
1534 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1538 [ --enable-cld enable -mcld by default for 32bit x86], [],
1541 # Windows32 Registry support for specifying GCC installation paths.
1542 AC_ARG_ENABLE(win32-registry,
1543 [ --disable-win32-registry
1544 disable lookup of installation paths in the
1545 Registry on Windows hosts
1546 --enable-win32-registry enable registry lookup (default)
1547 --enable-win32-registry=KEY
1548 use KEY instead of GCC version as the last portion
1549 of the registry key],,)
1552 win32 | pe | cygwin* | mingw32* | uwin*)
1553 if test "x$enable_win32_registry" != xno; then
1554 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1557 if test "x$enable_win32_registry" != xno; then
1558 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1559 [Define to 1 if installation paths should be looked up in the Windows
1560 Registry. Ignored on non-Windows hosts.])
1562 if test "x$enable_win32_registry" != xyes \
1563 && test "x$enable_win32_registry" != x; then
1564 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1565 [Define to be the last component of the Windows registry key under which
1566 to look for installation paths. The full key used will be
1567 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1568 The default is the GCC version number.])
1574 # Get an absolute path to the GCC top-level source directory
1575 holddir=`${PWDCMD-pwd}`
1577 topdir=`${PWDCMD-pwd}`
1580 # Conditionalize the makefile for this host machine.
1582 for f in ${host_xmake_file}
1584 if test -f ${srcdir}/config/$f
1586 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1590 # Conditionalize the makefile for this target machine.
1592 for f in ${tmake_file}
1594 if test -f ${srcdir}/config/$f
1596 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1599 tmake_file="${tmake_file_}"
1601 out_object_file=`basename $out_file .c`.o
1603 tm_file_list="options.h"
1604 tm_include_list="options.h"
1605 for f in $tm_file; do
1608 f=`echo $f | sed 's/^..//'`
1609 tm_file_list="${tm_file_list} $f"
1610 tm_include_list="${tm_include_list} $f"
1613 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1614 tm_include_list="${tm_include_list} $f"
1617 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1618 tm_include_list="${tm_include_list} config/$f"
1625 for f in $tm_p_file; do
1628 tm_p_file_list="${tm_p_file_list} $f"
1629 tm_p_include_list="${tm_p_include_list} $f"
1632 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1633 tm_p_include_list="${tm_p_include_list} config/$f"
1639 for f in $xm_file; do
1642 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1643 xm_include_list="${xm_include_list} $f"
1646 xm_file_list="${xm_file_list} $f"
1647 xm_include_list="${xm_include_list} $f"
1650 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1651 xm_include_list="${xm_include_list} config/$f"
1657 host_xm_include_list=
1658 for f in $host_xm_file; do
1661 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1662 host_xm_include_list="${host_xm_include_list} $f"
1665 host_xm_file_list="${host_xm_file_list} $f"
1666 host_xm_include_list="${host_xm_include_list} $f"
1669 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1670 host_xm_include_list="${host_xm_include_list} config/$f"
1676 for f in $build_xm_file; do
1679 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1680 build_xm_include_list="${build_xm_include_list} $f"
1682 auto-build.h | auto-host.h )
1683 build_xm_file_list="${build_xm_file_list} $f"
1684 build_xm_include_list="${build_xm_include_list} $f"
1687 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1688 build_xm_include_list="${build_xm_include_list} config/$f"
1693 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1694 # cross-compiler which does not use the native headers and libraries.
1695 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1696 CROSS= AC_SUBST(CROSS)
1697 ALL=all.internal AC_SUBST(ALL)
1698 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1700 if test "x$with_build_sysroot" != x; then
1701 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1703 # This value is used, even on a native system, because
1704 # CROSS_SYSTEM_HEADER_DIR is just
1705 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1706 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1709 if test x$host != x$target
1711 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1713 SYSTEM_HEADER_DIR=$build_system_header_dir
1714 case "$host","$target" in
1715 # Darwin crosses can use the host system's libraries and headers,
1716 # because of the fat library support. Of course, it must be the
1717 # same version of Darwin on both sides. Allow the user to
1718 # just say --target=foo-darwin without a version number to mean
1719 # "the version on this system".
1720 *-*-darwin*,*-*-darwin*)
1721 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1722 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1723 if test $hostos = $targetos -o $targetos = darwin ; then
1725 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1730 i?86-*-*,x86_64-*-* \
1731 | powerpc*-*-*,powerpc64*-*-*)
1732 CROSS="$CROSS -DNATIVE_CROSS" ;;
1734 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1735 SYSTEM_HEADER_DIR=$build_system_header_dir
1738 # If this is a cross-compiler that does not
1739 # have its own set of headers then define
1742 # If this is using newlib, without having the headers available now,
1743 # then define inhibit_libc in LIBGCC2_CFLAGS.
1744 # This prevents libgcc2 from containing any code which requires libc
1746 : ${inhibit_libc=false}
1747 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1748 test x$with_newlib = xyes ; } &&
1749 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1752 AC_SUBST(inhibit_libc)
1754 # When building gcc with a cross-compiler, we need to adjust things so
1755 # that the generator programs are still built with the native compiler.
1756 # Also, we cannot run fixincludes.
1758 # These are the normal (build=host) settings:
1759 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1760 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1761 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1762 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1764 # And these apply if build != host, or we are generating coverage data
1765 if test x$build != x$host || test "x$coverage_flags" != x
1767 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1768 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1771 # Expand extra_headers to include complete path.
1772 # This substitutes for lots of t-* files.
1774 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1775 for file in ${extra_headers} ; do
1776 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1779 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1780 if test x"$use_gcc_tgmath" = xyes
1781 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1784 # Define collect2 in Makefile.
1785 case $host_can_use_collect2 in
1787 *) collect2='collect2$(exeext)' ;;
1789 AC_SUBST([collect2])
1791 # Add a definition of USE_COLLECT2 if system wants one.
1792 case $use_collect2 in
1793 no) use_collect2= ;;
1796 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1797 xm_defines="${xm_defines} USE_COLLECT2"
1798 case $host_can_use_collect2 in
1800 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1806 # ---------------------------
1807 # Assembler & linker features
1808 # ---------------------------
1810 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1811 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1812 # However when ld-new is first executed from the build tree, libtool will
1813 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1814 # to the build tree. While doing this we need to use the previous-stage
1815 # linker, or we have an infinite loop. The presence of a shell script as
1816 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1817 # the gcc/collect-ld script. So we need to know how libtool works, or
1818 # exec-tool will fail.
1820 m4_defun([_LT_CONFIG_COMMANDS], [])
1823 AC_SUBST(enable_fast_install)
1825 # Identify the assembler which will work hand-in-glove with the newly
1826 # built GCC, so that we can examine its features. This is the assembler
1827 # which will be driven by the driver program.
1829 # If build != host, and we aren't building gas in-tree, we identify a
1830 # build->target assembler and hope that it will have the same features
1831 # as the host->target assembler we'll be using.
1832 gcc_cv_gas_major_version=
1833 gcc_cv_gas_minor_version=
1834 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1836 m4_pattern_allow([AS_FOR_TARGET])dnl
1837 AS_VAR_SET_IF(gcc_cv_as,, [
1838 if test -x "$DEFAULT_ASSEMBLER"; then
1839 gcc_cv_as="$DEFAULT_ASSEMBLER"
1840 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1841 && test -f ../gas/Makefile \
1842 && test x$build = x$host; then
1843 gcc_cv_as=../gas/as-new$build_exeext
1844 elif test -x as$build_exeext; then
1845 # Build using assembler in the current directory.
1846 gcc_cv_as=./as$build_exeext
1847 elif test -x $AS_FOR_TARGET; then
1848 gcc_cv_as="$AS_FOR_TARGET"
1850 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1853 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1854 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1855 case "$ORIGINAL_AS_FOR_TARGET" in
1856 ./as | ./as$build_exeext) ;;
1857 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1860 AC_MSG_CHECKING(what assembler to use)
1861 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1862 # Single tree build which includes gas. We want to prefer it
1863 # over whatever linker top-level may have detected, since
1864 # we'll use what we're building after installation anyway.
1865 AC_MSG_RESULT(newly built gas)
1867 _gcc_COMPUTE_GAS_VERSION
1868 in_tree_gas_is_elf=no
1869 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1870 || (grep 'obj_format = multi' ../gas/Makefile \
1871 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1873 in_tree_gas_is_elf=yes
1876 AC_MSG_RESULT($gcc_cv_as)
1880 # Identify the linker which will work hand-in-glove with the newly
1881 # built GCC, so that we can examine its features. This is the linker
1882 # which will be driven by the driver program.
1884 # If build != host, and we aren't building gas in-tree, we identify a
1885 # build->target linker and hope that it will have the same features
1886 # as the host->target linker we'll be using.
1887 gcc_cv_gld_major_version=
1888 gcc_cv_gld_minor_version=
1889 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1890 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1892 AS_VAR_SET_IF(gcc_cv_ld,, [
1893 if test -x "$DEFAULT_LINKER"; then
1894 gcc_cv_ld="$DEFAULT_LINKER"
1895 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1896 && test -f ../ld/Makefile \
1897 && test x$build = x$host; then
1898 gcc_cv_ld=../ld/ld-new$build_exeext
1899 elif test -x collect-ld$build_exeext; then
1900 # Build using linker in the current directory.
1901 gcc_cv_ld=./collect-ld$build_exeext
1902 elif test -x $LD_FOR_TARGET; then
1903 gcc_cv_ld="$LD_FOR_TARGET"
1905 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1908 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1909 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1910 case "$ORIGINAL_LD_FOR_TARGET" in
1911 ./collect-ld | ./collect-ld$build_exeext) ;;
1912 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1915 AC_MSG_CHECKING(what linker to use)
1916 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1917 # Single tree build which includes ld. We want to prefer it
1918 # over whatever linker top-level may have detected, since
1919 # we'll use what we're building after installation anyway.
1920 AC_MSG_RESULT(newly built ld)
1922 in_tree_ld_is_elf=no
1923 if (grep 'EMUL = .*elf' ../ld/Makefile \
1924 || grep 'EMUL = .*linux' ../ld/Makefile \
1925 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1926 in_tree_ld_is_elf=yes
1928 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
1931 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1932 if test x$gcc_cv_gld_version != x; then
1936 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1937 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1940 AC_MSG_RESULT($gcc_cv_ld)
1944 # Figure out what nm we will be using.
1945 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1946 AS_VAR_SET_IF(gcc_cv_nm,, [
1947 if test -f $gcc_cv_binutils_srcdir/configure.in \
1948 && test -f ../binutils/Makefile \
1949 && test x$build = x$host; then
1950 gcc_cv_nm=../binutils/nm-new$build_exeext
1951 elif test -x nm$build_exeext; then
1952 gcc_cv_nm=./nm$build_exeext
1953 elif test -x $NM_FOR_TARGET; then
1954 gcc_cv_nm="$NM_FOR_TARGET"
1956 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1959 AC_MSG_CHECKING(what nm to use)
1960 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1961 # Single tree build which includes binutils.
1962 AC_MSG_RESULT(newly built nm)
1965 AC_MSG_RESULT($gcc_cv_nm)
1969 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1970 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1971 case "$ORIGINAL_NM_FOR_TARGET" in
1972 ./nm | ./nm$build_exeext) ;;
1973 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
1977 # Figure out what objdump we will be using.
1978 AS_VAR_SET_IF(gcc_cv_objdump,, [
1979 if test -f $gcc_cv_binutils_srcdir/configure.in \
1980 && test -f ../binutils/Makefile \
1981 && test x$build = x$host; then
1982 # Single tree build which includes binutils.
1983 gcc_cv_objdump=../binutils/objdump$build_exeext
1984 elif test -x objdump$build_exeext; then
1985 gcc_cv_objdump=./objdump$build_exeext
1986 elif test -x $OBJDUMP_FOR_TARGET; then
1987 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
1989 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
1992 AC_MSG_CHECKING(what objdump to use)
1993 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
1994 # Single tree build which includes binutils.
1995 AC_MSG_RESULT(newly built objdump)
1996 elif test x$gcc_cv_objdump = x; then
1997 AC_MSG_RESULT(not found)
1999 AC_MSG_RESULT($gcc_cv_objdump)
2002 # Figure out what readelf we will be using.
2003 AS_VAR_SET_IF(gcc_cv_readelf,, [
2004 if test -f $gcc_cv_binutils_srcdir/configure.in \
2005 && test -f ../binutils/Makefile \
2006 && test x$build = x$host; then
2007 # Single tree build which includes binutils.
2008 gcc_cv_readelf=../binutils/readelf$build_exeext
2009 elif test -x readelf$build_exeext; then
2010 gcc_cv_readelf=./readelf$build_exeext
2012 AC_PATH_PROG(gcc_cv_readelf, readelf)
2015 AC_MSG_CHECKING(what readelf to use)
2016 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2017 # Single tree build which includes binutils.
2018 AC_MSG_RESULT(newly built readelf)
2019 elif test x$gcc_cv_readelf = x; then
2020 AC_MSG_RESULT(not found)
2022 AC_MSG_RESULT($gcc_cv_readelf)
2025 # Figure out what assembler alignment features are present.
2026 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2030 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2031 [Define if your assembler supports .balign and .p2align.])])
2033 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2036 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2037 [Define if your assembler supports specifying the maximum number
2038 of bytes to skip when using the GAS .p2align command.])])
2040 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2043 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2044 [Define if your assembler supports .literal16.])])
2046 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2048 [conftest_label1: .word 0
2050 conftest_label2: .word 0
2052 [if test x$gcc_cv_nm != x; then
2053 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2054 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2055 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2057 else gcc_cv_as_subsection_m1=yes
2059 rm -f conftest.nm1 conftest.nm2
2061 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2062 [Define if your assembler supports .subsection and .subsection -1 starts
2063 emitting at the beginning of your section.])])
2065 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2068 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2070 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2072 [ .weakref foobar, barfnot],,
2073 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2075 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2078 .NSUBSPA $CODE$,COMDAT],,
2079 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2081 # .hidden needs to be supported in both the assembler and the linker,
2082 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2083 # This is irritatingly difficult to feature test for; we have to check the
2084 # date string after the version number. If we've got an in-tree
2085 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2087 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2088 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2093 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2094 [if test $in_tree_ld = yes ; then
2096 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2097 && test $in_tree_ld_is_elf = yes; then
2098 gcc_cv_ld_hidden=yes
2102 gcc_cv_ld_hidden=yes
2103 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2104 if echo "$ld_ver" | grep GNU > /dev/null; then
2105 ld_vers=`echo $ld_ver | sed -n \
2106 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2107 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2108 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2109 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2110 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2111 if test 0"$ld_date" -lt 20020404; then
2112 if test -n "$ld_date"; then
2113 # If there was date string, but was earlier than 2002-04-04, fail
2115 elif test -z "$ld_vers"; then
2116 # If there was no date string nor ld version number, something is wrong
2119 test -z "$ld_vers_patch" && ld_vers_patch=0
2120 if test "$ld_vers_major" -lt 2; then
2122 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2123 gcc_cv_ld_hidden="no"
2124 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2131 hppa64*-*-hpux* | ia64*-*-hpux*)
2132 gcc_cv_ld_hidden=yes
2134 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2135 gcc_cv_ld_hidden=yes
2144 libgcc_visibility=no
2145 AC_SUBST(libgcc_visibility)
2146 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2147 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2148 libgcc_visibility=yes
2149 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2150 [Define if your assembler and linker support .hidden.])
2153 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2154 gcc_cv_ld_ro_rw_mix=unknown
2155 if test $in_tree_ld = yes ; then
2156 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2157 && test $in_tree_ld_is_elf = yes; then
2158 gcc_cv_ld_ro_rw_mix=read-write
2160 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2161 echo '.section myfoosect, "a"' > conftest1.s
2162 echo '.section myfoosect, "aw"' > conftest2.s
2163 echo '.byte 1' >> conftest2.s
2164 echo '.section myfoosect, "a"' > conftest3.s
2165 echo '.byte 0' >> conftest3.s
2166 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2167 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2168 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2169 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2170 conftest2.o conftest3.o > /dev/null 2>&1; then
2171 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2172 | sed -e '/myfoosect/!d' -e N`
2173 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2174 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2175 gcc_cv_ld_ro_rw_mix=read-only
2177 gcc_cv_ld_ro_rw_mix=read-write
2182 rm -f conftest.* conftest[123].*
2185 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2186 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2187 [Define if your linker links a mix of read-only
2188 and read-write sections into a read-write section.])
2190 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2192 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2193 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2201 [# GAS versions before 2.11 do not support uleb128,
2202 # despite appearing to.
2203 # ??? There exists an elf-specific test that will crash
2204 # the assembler. Perhaps it's better to figure out whether
2205 # arbitrary sections are supported and try the test.
2206 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2207 if echo "$as_ver" | grep GNU > /dev/null; then
2209 as_vers=`echo $as_ver | sed -n \
2210 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2211 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2212 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2214 if test $as_major -eq 2 && test $as_minor -lt 11
2216 else gcc_cv_as_leb128=yes
2219 [AC_DEFINE(HAVE_AS_LEB128, 1,
2220 [Define if your assembler supports .sleb128 and .uleb128.])])
2222 # Check if we have assembler support for unwind directives.
2223 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2230 .cfi_escape 1, 2, 3, 4, 5
2234 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2235 # read-only and read-write sections, we need to make sure that the
2236 # assembler used emits read-write .eh_frame sections.
2237 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2238 if test "x$gcc_cv_objdump" != x; then
2239 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2240 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2241 gcc_cv_as_cfi_directive=no
2243 gcc_cv_as_cfi_directive=yes
2246 # no objdump, err on the side of caution
2247 gcc_cv_as_cfi_directive=no
2250 gcc_cv_as_cfi_directive=yes
2254 gcc_cv_as_cfi_directive=yes
2257 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_readelf != x; then
2258 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2262 .cfi_adjust_cfa_offset 64
2264 .cfi_adjust_cfa_offset 128
2268 if $gcc_cv_readelf -wf conftest.o 2>/dev/null \
2269 | grep 'DW_CFA_advance_loc[12]:[ ][ ]*512[ ]' >/dev/null; then
2270 gcc_cv_as_cfi_advance_working=yes
2275 # no readelf, err on the side of caution
2276 gcc_cv_as_cfi_advance_working=no
2278 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2279 [`if test $gcc_cv_as_cfi_directive = yes \
2280 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2281 [Define 0/1 if your assembler supports CFI directives.])
2283 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2284 gcc_cv_as_cfi_personality_directive, ,,
2287 .cfi_personality 0, symbol
2289 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2290 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2291 then echo 1; else echo 0; fi`],
2292 [Define 0/1 if your assembler supports .cfi_personality.])
2294 # GAS versions up to and including 2.11.0 may mis-optimize
2296 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2304 .section .eh_frame,"aw",@progbits
2306 .4byte .LECIE1-.LSCIE1
2320 .4byte .LEFDE1-.LASFDE1
2322 .4byte .LASFDE1-__FRAME_BEGIN__
2330 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2331 cat > conftest.lit <<EOF
2332 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2333 0010 01000000 12000000 18000000 00000000 ................
2334 0020 08000000 04080000 0044 .........D @&t@
2336 cat > conftest.big <<EOF
2337 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2338 0010 00000001 00000012 00000018 00000000 ................
2339 0020 00000008 04000000 0844 .........D @&t@
2341 # If the assembler didn't choke, and we can objdump,
2342 # and we got the correct data, then succeed.
2343 # The text in the here-document typically retains its unix-style line
2344 # endings, while the output of objdump will use host line endings.
2345 # Therefore, use diff -b for the comparisons.
2346 if test x$gcc_cv_objdump != x \
2347 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2348 | tail -3 > conftest.got \
2349 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2350 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2352 gcc_cv_as_eh_frame=yes
2353 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2354 gcc_cv_as_eh_frame=buggy
2356 # Uh oh, what do we do now?
2357 gcc_cv_as_eh_frame=no
2360 if test $gcc_cv_as_eh_frame = buggy; then
2361 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2362 [Define if your assembler mis-optimizes .eh_frame data.])
2365 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2366 [elf,2,12,0], [--fatal-warnings],
2367 [.section .rodata.str, "aMS", @progbits, 1])
2368 if test $gcc_cv_as_shf_merge = no; then
2369 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2370 [elf,2,12,0], [--fatal-warnings],
2371 [.section .rodata.str, "aMS", %progbits, 1])
2373 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2374 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2375 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2377 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2378 [elf,2,16,0], [--fatal-warnings],
2379 [.section .text,"axG",@progbits,.foo,comdat])
2380 if test $gcc_cv_as_comdat_group = yes; then
2381 gcc_cv_as_comdat_group_percent=no
2383 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2384 [elf,2,16,0], [--fatal-warnings],
2385 [.section .text,"axG",%progbits,.foo,comdat])
2387 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2389 if test 0"$ld_date" -lt 20050308; then
2390 if test -n "$ld_date"; then
2391 # If there was date string, but was earlier than 2005-03-08, fail
2393 elif test "$ld_vers_major" -lt 2; then
2395 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2400 # assume linkers other than GNU ld don't support COMDAT group
2403 if test $comdat_group = no; then
2404 gcc_cv_as_comdat_group=no
2405 gcc_cv_as_comdat_group_percent=no
2407 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2408 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2409 [Define 0/1 if your assembler and linker support COMDAT groups.])
2411 # Thread-local storage - the check is heavily parameterized.
2420 .section ".tdata","awT",@progbits
2423 ldq $27,__tls_get_addr($29) !literal!1
2424 lda $16,foo($29) !tlsgd!1
2425 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2426 ldq $27,__tls_get_addr($29) !literal!2
2427 lda $16,foo($29) !tlsldm!2
2428 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2429 ldq $1,foo($29) !gotdtprel
2430 ldah $2,foo($29) !dtprelhi
2431 lda $3,foo($2) !dtprello
2432 lda $4,foo($29) !dtprel
2433 ldq $1,foo($29) !gottprel
2434 ldah $2,foo($29) !tprelhi
2435 lda $3,foo($2) !tprello
2436 lda $4,foo($29) !tprel'
2439 tls_as_opt=--fatal-warnings
2441 cris-*-*|crisv32-*-*)
2443 .section ".tdata","awT",@progbits
2450 tls_as_opt=--fatal-warnings
2454 .section ".tdata","awT",@progbits
2466 .section ".tdata","awT",@progbits
2470 addil LT%foo-$tls_gdidx$,gp
2471 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2474 addil LT%foo-$tls_ldidx$,gp
2476 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2477 addil LR%foo-$tls_dtpoff$,%ret0
2478 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2480 addil LT%foo-$tls_ieoff$,gp
2481 ldw RT%foo-$tls_ieoff$(%r1),%t2
2484 addil LR%foo-$tls_leoff$,%t1
2485 ldo RR%foo-$tls_leoff$(%r1),%t2'
2488 tls_as_opt=--fatal-warnings
2492 .section ".tdata","awT",%progbits
2505 .section ".tdata","awT",@progbits
2509 leal foo@TLSGD(,%ebx,1), %eax
2510 leal foo@TLSLDM(%ebx), %eax
2511 leal foo@DTPOFF(%eax), %edx
2512 movl foo@GOTTPOFF(%ebx), %eax
2513 subl foo@GOTTPOFF(%ebx), %eax
2514 addl foo@GOTNTPOFF(%ebx), %eax
2515 movl foo@INDNTPOFF, %eax
2516 movl $foo@TPOFF, %eax
2517 subl $foo@TPOFF, %eax
2518 leal foo@NTPOFF(%ecx), %eax'
2521 tls_as_opt=--fatal-warnings
2525 .section ".tdata","awT",@progbits
2529 leaq foo@TLSGD(%rip), %rdi
2530 leaq foo@TLSLD(%rip), %rdi
2531 leaq foo@DTPOFF(%rax), %rdx
2532 movq foo@GOTTPOFF(%rip), %rax
2533 movq $foo@TPOFF, %rax'
2536 tls_as_opt=--fatal-warnings
2540 .section ".tdata","awT",@progbits
2543 addl r16 = @ltoff(@dtpmod(foo#)), gp
2544 addl r17 = @ltoff(@dtprel(foo#)), gp
2545 addl r18 = @ltoff(@tprel(foo#)), gp
2546 addl r19 = @dtprel(foo#), gp
2547 adds r21 = @dtprel(foo#), r13
2548 movl r23 = @dtprel(foo#)
2549 addl r20 = @tprel(foo#), gp
2550 adds r22 = @tprel(foo#), r13
2551 movl r24 = @tprel(foo#)'
2554 tls_as_opt=--fatal-warnings
2558 .section .tdata,"awT",@progbits
2562 addiu $4, $28, %tlsgd(x)
2563 addiu $4, $28, %tlsldm(x)
2564 lui $4, %dtprel_hi(x)
2565 addiu $4, $4, %dtprel_lo(x)
2566 lw $4, %gottprel(x)($28)
2567 lui $4, %tprel_hi(x)
2568 addiu $4, $4, %tprel_lo(x)'
2571 tls_as_opt='-32 --fatal-warnings'
2575 .section .tdata,"awT",@progbits
2580 move.l x@TLSGD(%a5),%a0
2581 move.l x@TLSLDM(%a5),%a0
2582 move.l x@TLSLDO(%a5),%a0
2583 move.l x@TLSIE(%a5),%a0
2584 move.l x@TLSLE(%a5),%a0'
2587 tls_as_opt='--fatal-warnings'
2591 .section ".tdata","awT",@progbits
2599 addi 3,31,ld0@got@tlsgd
2601 addi 3,31,x1@got@tlsld
2604 addis 9,3,x2@dtprel@ha
2605 addi 9,9,x2@dtprel@l
2606 lwz 9,x3@got@tprel(31)
2609 addis 9,2,x2@tprel@ha
2610 addi 9,9,x2@tprel@l'
2613 tls_as_opt="-a32 --fatal-warnings"
2617 .section ".tdata","awT",@progbits
2625 addi 3,2,ld0@got@tlsgd
2631 addi 3,2,x1@got@tlsld
2637 addis 9,3,x2@dtprel@ha
2638 addi 9,9,x2@dtprel@l
2641 ld 9,x3@got@dtprel(2)
2647 tls_as_opt="-a64 --fatal-warnings"
2651 .section ".tdata","awT",@progbits
2660 l %r1,foo@GOTNTPOFF(%r12)
2661 l %r1,0(%r1):tls_load:foo
2662 bas %r14,0(%r1,%r13):tls_gdcall:foo
2663 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2666 tls_as_opt="-m31 --fatal-warnings"
2670 .section ".tdata","awT",@progbits
2678 lg %r1,foo@GOTNTPOFF(%r12)
2679 larl %r1,foo@INDNTPOFF
2680 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2681 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2684 tls_as_opt="-m64 -Aesame --fatal-warnings"
2686 sh-*-* | sh[34]-*-*)
2688 .section ".tdata","awT",@progbits
2698 tls_as_opt=--fatal-warnings
2702 sparc*-sun-solaris2.[56789]*)
2703 # TLS was introduced in the Solaris 9 4/04 release but
2704 # we do not enable it by default on Solaris 9 either.
2705 if test "x$enable_tls" = xyes ; then
2711 sparc*-sun-solaris2.*)
2718 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2720 .section ".tdata",#alloc,#write,#tls
2723 sethi %tgd_hi22(foo), %o0
2724 add %o0, %tgd_lo10(foo), %o1
2725 add %l7, %o1, %o0, %tgd_add(foo)
2726 call __tls_get_addr, %tgd_call(foo)
2727 sethi %tldm_hi22(foo), %l1
2728 add %l1, %tldm_lo10(foo), %l2
2729 add %l7, %l2, %o0, %tldm_add(foo)
2730 call __tls_get_addr, %tldm_call(foo)
2731 sethi %tldo_hix22(foo), %l3
2732 xor %l3, %tldo_lox10(foo), %l4
2733 add %o0, %l4, %l5, %tldo_add(foo)
2734 sethi %tie_hi22(foo), %o3
2735 add %o3, %tie_lo10(foo), %o3
2736 ld [%l7 + %o3], %o2, %tie_ld(foo)
2737 add %g7, %o2, %o4, %tie_add(foo)
2738 sethi %tle_hix22(foo), %l1
2739 xor %l1, %tle_lox10(foo), %o5
2740 ld [%g7 + %o5], %o1'
2745 .section ".tdata","awT",@progbits
2748 sethi %tgd_hi22(foo), %o0
2749 add %o0, %tgd_lo10(foo), %o1
2750 add %l7, %o1, %o0, %tgd_add(foo)
2751 call __tls_get_addr, %tgd_call(foo)
2752 sethi %tldm_hi22(foo), %l1
2753 add %l1, %tldm_lo10(foo), %l2
2754 add %l7, %l2, %o0, %tldm_add(foo)
2755 call __tls_get_addr, %tldm_call(foo)
2756 sethi %tldo_hix22(foo), %l3
2757 xor %l3, %tldo_lox10(foo), %l4
2758 add %o0, %l4, %l5, %tldo_add(foo)
2759 sethi %tie_hi22(foo), %o3
2760 add %o3, %tie_lo10(foo), %o3
2761 ld [%l7 + %o3], %o2, %tie_ld(foo)
2762 add %g7, %o2, %o4, %tie_add(foo)
2763 sethi %tle_hix22(foo), %l1
2764 xor %l1, %tle_lox10(foo), %o5
2765 ld [%g7 + %o5], %o1'
2768 tls_as_opt="-32 --fatal-warnings"
2773 .section ".tdata","awT",@progbits
2776 movi a8, foo@TLSFUNC
2777 movi a10, foo@TLSARG
2778 callx8.tls a8, foo@TLSCALL'
2785 if test "x$enable_tls" = xno ; then
2786 : # TLS explicitly disabled.
2787 elif test "x$enable_tls" = xyes ; then
2788 set_have_as_tls=yes # TLS explicitly enabled.
2789 elif test -z "$tls_first_major"; then
2790 : # If we don't have a check, assume no support.
2792 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2793 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2794 [set_have_as_tls=yes])
2796 if test $set_have_as_tls = yes ; then
2797 AC_DEFINE(HAVE_AS_TLS, 1,
2798 [Define if your assembler supports thread-local storage.])
2801 # Target-specific assembler checks.
2803 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2804 gcc_cv_ld_static_dynamic=no
2805 if test $in_tree_ld = yes ; then
2806 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
2807 gcc_cv_ld_static_dynamic=yes
2809 elif test x$gcc_cv_ld != x; then
2810 # Check if linker supports -Bstatic/-Bdynamic option
2811 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2812 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2813 gcc_cv_ld_static_dynamic=yes
2816 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2817 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2818 [Define if your linker supports -Bstatic/-Bdynamic option.])
2820 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2822 if test x"$demangler_in_ld" = xyes; then
2823 AC_MSG_CHECKING(linker --demangle support)
2824 gcc_cv_ld_demangle=no
2825 if test $in_tree_ld = yes; then
2826 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2827 gcc_cv_ld_demangle=yes
2829 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2830 # Check if the GNU linker supports --demangle option
2831 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2832 gcc_cv_ld_demangle=yes
2835 if test x"$gcc_cv_ld_demangle" = xyes; then
2836 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2837 [Define if your linker supports --demangle option.])
2839 AC_MSG_RESULT($gcc_cv_ld_demangle)
2843 # All TARGET_ABI_OSF targets.
2844 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2845 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2846 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2849 extbl $3, $2, $3 !lituse_bytoff!1
2850 ldq $2, a($29) !literal!1
2851 ldq $4, b($29) !literal!2
2852 ldq_u $3, 0($2) !lituse_base!1
2853 ldq $27, f($29) !literal!5
2854 jsr $26, ($27), f !lituse_jsr!5
2855 ldah $29, 0($26) !gpdisp!3
2856 lda $0, c($29) !gprel
2857 ldah $1, d($29) !gprelhigh
2858 lda $1, d($1) !gprellow
2859 lda $29, 0($29) !gpdisp!3],,
2860 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2861 [Define if your assembler supports explicit relocations.])])
2862 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2863 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2866 ldq $27, a($29) !literal!1
2867 jsr $26, ($27), a !lituse_jsrdirect!1],,
2868 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2869 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2873 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2874 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2875 [-no-mul-bug-abort], [.text],,
2876 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2877 [Define if your assembler supports the -no-mul-bug-abort option.])])
2881 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2882 [.register %g2, #scratch],,
2883 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2884 [Define if your assembler supports .register.])])
2886 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2888 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2889 [Define if your assembler supports -relax option.])])
2891 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2892 gcc_cv_as_sparc_ua_pcrel,,
2900 .uaword %r_disp32(foo)],
2901 [if test x$gcc_cv_ld != x \
2902 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2903 gcc_cv_as_sparc_ua_pcrel=yes
2906 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2907 [Define if your assembler and linker support unaligned PC relative relocs.])
2909 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2910 gcc_cv_as_sparc_ua_pcrel_hidden,,
2915 .uaword %r_disp32(foo)
2916 .byte 0x32, 0x33, 0x34
2921 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2922 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2923 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2924 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2925 if $gcc_cv_objdump -R conftest 2> /dev/null \
2926 | grep 'DISP32' > /dev/null 2>&1; then
2929 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2933 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2934 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2935 ]) # unaligned pcrel relocs
2937 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2938 gcc_cv_as_sparc_offsetable_lo10,,
2941 or %g1, %lo(ab) + 12, %g1
2942 or %g1, %lo(ab + 12), %g1],
2943 [if test x$gcc_cv_objdump != x \
2944 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2945 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2946 gcc_cv_as_sparc_offsetable_lo10=yes
2948 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2949 [Define if your assembler supports offsetable %lo().])])
2953 i[34567]86-*-* | x86_64-*-*)
2956 cygwin* | pe | mingw32*)
2957 # Used for DWARF 2 in PE
2958 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2959 gcc_cv_as_ix86_pe_secrel32,
2965 [if test x$gcc_cv_ld != x \
2966 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2967 gcc_cv_as_ix86_pe_secrel32=yes
2970 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2971 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2975 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2976 gcc_cv_as_ix86_filds,,,
2977 [filds mem; fists mem],,
2978 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
2979 [Define if your assembler uses filds and fists mnemonics.])])
2981 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
2982 gcc_cv_as_ix86_fildq,,,
2983 [fildq mem; fistpq mem],,
2984 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
2985 [Define if your assembler uses fildq and fistq mnemonics.])])
2987 gcc_GAS_CHECK_FEATURE([cmov syntax],
2988 gcc_cv_as_ix86_cmov_sun_syntax,,,
2989 [cmovl.l %edx, %eax],,
2990 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2991 [Define if your assembler supports the Sun syntax for cmov.])])
2993 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2994 gcc_cv_as_ix86_ffreep,,,
2996 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2997 [Define if your assembler supports the ffreep mnemonic.])])
2999 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3000 gcc_cv_as_ix86_sahf,,,
3002 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3003 [Define if your assembler supports the sahf mnemonic.])])
3005 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3006 gcc_cv_as_ix86_diff_sect_delta,,,
3014 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3015 [Define if your assembler supports the subtraction of symbols in different sections.])])
3017 # This one is used unconditionally by i386.[ch]; it is to be defined
3018 # to 1 if the feature is present, 0 otherwise.
3019 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3020 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3026 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3027 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3028 [Define true if the assembler supports '.long foo@GOTOFF'.])
3032 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3033 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3035 addl r15 = @ltoffx(x#), gp
3037 ld8.mov r16 = [[r15]], x#],,
3038 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3039 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3045 *-*-aix*) conftest_s=' .machine "pwr5"
3049 gcc_GAS_CHECK_FEATURE([.machine directive support],
3050 gcc_cv_as_machine_directive,,,
3051 [ .machine ppc7400])
3052 if test x$gcc_cv_as_machine_directive != xyes; then
3053 echo "*** This target requires an assembler supporting \".machine\"" >&2
3054 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3055 test x$build = x$target && exit 1
3059 *) conftest_s=' .machine power4
3064 gcc_GAS_CHECK_FEATURE([mfcr field support],
3065 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3067 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3068 [Define if your assembler supports mfcr field.])])
3071 *-*-aix*) conftest_s=' .machine "pwr5"
3074 *) conftest_s=' .machine power5
3079 gcc_GAS_CHECK_FEATURE([popcntb support],
3080 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3082 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3083 [Define if your assembler supports popcntb field.])])
3086 *-*-aix*) conftest_s=' .machine "pwr5x"
3089 *) conftest_s=' .machine power5
3094 gcc_GAS_CHECK_FEATURE([fp round support],
3095 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3097 [AC_DEFINE(HAVE_AS_FPRND, 1,
3098 [Define if your assembler supports fprnd.])])
3101 *-*-aix*) conftest_s=' .machine "pwr6"
3104 *) conftest_s=' .machine power6
3109 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3110 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
3112 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3113 [Define if your assembler supports mffgpr and mftgpr.])])
3116 *-*-aix*) conftest_s=' .csect .text[[PR]]
3118 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3122 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3123 *) conftest_s=' .text
3125 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3128 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3129 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3131 [AC_DEFINE(HAVE_AS_REL16, 1,
3132 [Define if your assembler supports R_PPC_REL16 relocs.])])
3135 *-*-aix*) conftest_s=' .machine "pwr6"
3138 *) conftest_s=' .machine power6
3143 gcc_GAS_CHECK_FEATURE([compare bytes support],
3144 gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
3146 [AC_DEFINE(HAVE_AS_CMPB, 1,
3147 [Define if your assembler supports cmpb.])])
3150 *-*-aix*) conftest_s=' .machine "pwr6"
3153 *) conftest_s=' .machine power6
3158 gcc_GAS_CHECK_FEATURE([decimal float support],
3159 gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
3161 [AC_DEFINE(HAVE_AS_DFP, 1,
3162 [Define if your assembler supports DFP instructions.])])
3165 *-*-aix*) conftest_s=' .machine "pwr7"
3168 *) conftest_s=' .machine power7
3173 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3174 gcc_cv_as_powerpc_vsx, [9,99,0], -a32,
3176 [AC_DEFINE(HAVE_AS_VSX, 1,
3177 [Define if your assembler supports VSX instructions.])])
3179 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3180 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3181 [.gnu_attribute 4,1],,
3182 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3183 [Define if your assembler supports .gnu_attribute.])])
3185 gcc_GAS_CHECK_FEATURE([tls marker support],
3186 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3187 [ bl __tls_get_addr(x@tlsgd)],,
3188 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3189 [Define if your assembler supports arg info for __tls_get_addr.])])
3193 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3194 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3195 [ lw $4,%gp_rel(foo)($4)],,
3196 [if test x$target_cpu_default = x
3197 then target_cpu_default=MASK_EXPLICIT_RELOCS
3198 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3200 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3201 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3202 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3203 [Define if the assembler understands -mno-shared.])])
3205 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3206 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3207 [.gnu_attribute 4,1],,
3208 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3209 [Define if your assembler supports .gnu_attribute.])])
3211 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3212 gcc_cv_as_mips_dtprelword, [2,18,0],,
3213 [.section .tdata,"awT",@progbits
3217 .dtprelword x+0x8000],,
3218 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3219 [Define if your assembler supports .dtprelword.])])
3223 # Mips and HP-UX need the GNU assembler.
3224 # Linux on IA64 might be able to use the Intel assembler.
3227 mips*-*-* | *-*-hpux* )
3228 if test x$gas_flag = xyes \
3229 || test x"$host" != x"$build" \
3230 || test ! -x "$gcc_cv_as" \
3231 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3234 echo "*** This configuration requires the GNU assembler" >&2
3240 # ??? Not all targets support dwarf2 debug_line, even within a version
3241 # of gas. Moreover, we need to emit a valid instruction to trigger any
3242 # info to the output file. So, as supported targets are added to gas 2.11,
3243 # add some instruction here to (also) show we expect this might work.
3244 # ??? Once 2.11 is released, probably need to add first known working
3245 # version to the per-target configury.
3247 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3248 | x86_64*-*-* | hppa*-*-* | arm*-*-* \
3249 | xstormy16*-*-* | cris-*-* | crisv32-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \
3250 | spu-*-* | fido*-*-* | m32c-*-*)
3253 ia64*-*-* | s390*-*-*)
3260 if test x"$insn" != x; then
3262 .file 1 \"conftest.s\"
3265 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3266 gcc_cv_as_dwarf2_debug_line,
3267 [elf,2,11,0],, [$conftest_s],
3268 [if test x$gcc_cv_objdump != x \
3269 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3270 | grep debug_line > /dev/null 2>&1; then
3271 gcc_cv_as_dwarf2_debug_line=yes
3274 # The .debug_line file table must be in the exact order that
3275 # we specified the files, since these indices are also used
3276 # by DW_AT_decl_file. Approximate this test by testing if
3277 # the assembler bitches if the same index is assigned twice.
3278 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3279 gcc_cv_as_dwarf2_file_buggy,,,
3283 if test $gcc_cv_as_dwarf2_debug_line = yes \
3284 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3285 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3286 [Define if your assembler supports dwarf2 .file/.loc directives,
3287 and preserves file table indices exactly as given.])
3290 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3291 gcc_cv_as_gdwarf2_flag,
3292 [elf,2,11,0], [--gdwarf2], [$insn],,
3293 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3294 [Define if your assembler supports the --gdwarf2 option.])])
3296 gcc_GAS_CHECK_FEATURE([--gstabs option],
3297 gcc_cv_as_gstabs_flag,
3298 [elf,2,11,0], [--gstabs], [$insn],
3299 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3300 # and warns about it, but still exits successfully. So check for
3302 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3304 else gcc_cv_as_gstabs_flag=yes
3306 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3307 [Define if your assembler supports the --gstabs option.])])
3309 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3310 gcc_cv_as_debug_prefix_map_flag,
3311 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3312 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3313 [Define if your assembler supports the --debug-prefix-map option.])])
3316 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3319 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3320 [Define if your assembler supports .lcomm with an alignment field.])])
3322 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3323 [gcc_cv_as_line_zero],
3324 [gcc_cv_as_line_zero=no
3325 if test $in_tree_gas = yes; then
3326 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3327 elif test "x$gcc_cv_as" != x; then
3328 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3329 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3330 test "x`cat conftest.out`" = x
3332 gcc_cv_as_line_zero=yes
3334 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3335 cat conftest.s >&AS_MESSAGE_LOG_FD
3336 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3337 cat conftest.out >&AS_MESSAGE_LOG_FD
3339 rm -f conftest.o conftest.s conftest.out
3341 if test "x$gcc_cv_as_line_zero" = xyes; then
3342 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3343 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3346 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3347 gcc_cv_ld_eh_frame_hdr=no
3348 if test $in_tree_ld = yes ; then
3349 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3350 && test $in_tree_ld_is_elf = yes; then
3351 gcc_cv_ld_eh_frame_hdr=yes
3353 elif test x$gcc_cv_ld != x; then
3354 # Check if linker supports --eh-frame-hdr option
3355 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3356 gcc_cv_ld_eh_frame_hdr=yes
3359 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3360 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3361 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3362 [Define if your linker supports --eh-frame-hdr option.])
3364 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3366 AC_MSG_CHECKING(linker position independent executable support)
3368 if test $in_tree_ld = yes ; then
3369 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3370 && test $in_tree_ld_is_elf = yes; then
3373 elif test x$gcc_cv_ld != x; then
3374 # Check if linker supports -pie option
3375 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3379 if test x"$gcc_cv_ld_pie" = xyes; then
3380 AC_DEFINE(HAVE_LD_PIE, 1,
3381 [Define if your linker supports -pie option.])
3383 AC_MSG_RESULT($gcc_cv_ld_pie)
3385 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3386 gcc_cv_ld_eh_gc_sections=no
3387 if test $in_tree_ld = yes ; then
3388 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3389 && test $in_tree_ld_is_elf = yes; then
3390 gcc_cv_ld_eh_gc_sections=yes
3392 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3393 cat > conftest.s <<EOF
3396 .type _start, @function
3399 .size _start, .-_start
3400 .section .text.foo,"ax",@progbits
3401 .type foo, @function
3405 .section .gcc_except_table.foo,"a",@progbits
3408 .section .eh_frame,"a",@progbits
3411 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3412 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3413 | grep "gc-sections option ignored" > /dev/null; then
3414 gcc_cv_ld_eh_gc_sections=no
3415 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3416 gcc_cv_ld_eh_gc_sections=yes
3417 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3418 if test x$gcc_cv_as_comdat_group != xyes; then
3419 gcc_cv_ld_eh_gc_sections=no
3420 cat > conftest.s <<EOF
3423 .type _start, @function
3426 .size _start, .-_start
3427 .section .gnu.linkonce.t.foo,"ax",@progbits
3428 .type foo, @function
3432 .section .gcc_except_table.foo,"a",@progbits
3435 .section .eh_frame,"a",@progbits
3438 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3439 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3440 | grep "gc-sections option ignored" > /dev/null; then
3441 gcc_cv_ld_eh_gc_sections=no
3442 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3443 gcc_cv_ld_eh_gc_sections=yes
3449 rm -f conftest.s conftest.o conftest
3453 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3454 gcc_cv_ld_eh_gc_sections=no
3457 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3458 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3459 [Define if your linker supports garbage collection of
3460 sections in presence of EH frames.])
3462 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3468 AC_CACHE_CHECK(linker --as-needed support,
3469 gcc_cv_ld_as_needed,
3470 [gcc_cv_ld_as_needed=no
3471 if test $in_tree_ld = yes ; then
3472 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3473 && test $in_tree_ld_is_elf = yes; then
3474 gcc_cv_ld_as_needed=yes
3476 elif test x$gcc_cv_ld != x; then
3477 # Check if linker supports --as-needed and --no-as-needed options
3478 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3479 gcc_cv_ld_as_needed=yes
3483 if test x"$gcc_cv_ld_as_needed" = xyes; then
3484 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3485 [Define if your linker supports --as-needed and --no-as-needed options.])
3488 case "$target:$tm_file" in
3489 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3490 AC_CACHE_CHECK(linker support for omitting dot symbols,
3491 gcc_cv_ld_no_dot_syms,
3492 [gcc_cv_ld_no_dot_syms=no
3493 if test $in_tree_ld = yes ; then
3494 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3495 gcc_cv_ld_no_dot_syms=yes
3497 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3498 cat > conftest1.s <<EOF
3502 cat > conftest2.s <<EOF
3503 .section ".opd","aw"
3508 .quad .LEfoo,.TOC.@tocbase,0
3514 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3515 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3516 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3517 gcc_cv_ld_no_dot_syms=yes
3519 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3522 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3523 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3524 [Define if your PowerPC64 linker only needs function descriptor syms.])
3529 AC_CACHE_CHECK(linker --build-id support,
3531 [gcc_cv_ld_buildid=no
3532 if test $in_tree_ld = yes ; then
3533 if test "$gcc_cv_gld_major_version" -eq 2 -a \
3534 "$gcc_cv_gld_minor_version" -ge 18 -o \
3535 "$gcc_cv_gld_major_version" -gt 2 \
3536 && test $in_tree_ld_is_elf = yes; then
3537 gcc_cv_ld_buildid=yes
3539 elif test x$gcc_cv_ld != x; then
3540 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
3541 gcc_cv_ld_buildid=yes
3544 if test x"$gcc_cv_ld_buildid" = xyes; then
3545 AC_DEFINE(HAVE_LD_BUILDID, 1,
3546 [Define if your linker supports --build-id.])
3549 AC_ARG_ENABLE(linker-build-id,
3550 [ --enable-linker-build-id
3551 compiler will always pass --build-id to linker],
3553 enable_linker_build_id=no)
3555 if test x"$enable_linker_build_id" = xyes; then
3556 if test x"$gcc_cv_ld_buildid" = xyes; then
3557 AC_DEFINE(ENABLE_LD_BUILDID, 1,
3558 [Define if gcc should always pass --build-id to linker.])
3560 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
3564 AC_CACHE_CHECK(linker --sysroot support,
3566 [gcc_cv_ld_sysroot=no
3567 if test $in_tree_ld = yes ; then
3568 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3569 gcc_cv_ld_sysroot=yes
3571 elif test x$gcc_cv_ld != x; then
3572 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3573 gcc_cv_ld_sysroot=yes
3576 if test x"$gcc_cv_ld_sysroot" = xyes; then
3577 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3578 [Define if your linker supports --sysroot.])
3581 if test x$with_sysroot = x && test x$host = x$target \
3582 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3583 && test "$prefix" != "NONE"; then
3584 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3585 [Define to PREFIX/include if cpp should also search that directory.])
3588 # Test for stack protector support in target C library.
3589 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3590 gcc_cv_libc_provides_ssp,
3591 [gcc_cv_libc_provides_ssp=no
3593 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
3594 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3595 if test "x$with_sysroot" = x; then
3596 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3597 elif test "x$with_build_sysroot" != "x"; then
3598 glibc_header_dir="${with_build_sysroot}/usr/include"
3599 elif test "x$with_sysroot" = xyes; then
3600 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3602 glibc_header_dir="${with_sysroot}/usr/include"
3605 glibc_header_dir=/usr/include
3607 # glibc 2.4 and later provides __stack_chk_fail and
3608 # either __stack_chk_guard, or TLS access to stack guard canary.
3609 if test -f $glibc_header_dir/features.h \
3610 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3611 $glibc_header_dir/features.h > /dev/null; then
3612 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3613 $glibc_header_dir/features.h > /dev/null; then
3614 gcc_cv_libc_provides_ssp=yes
3615 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3616 $glibc_header_dir/features.h > /dev/null \
3617 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3618 $glibc_header_dir/features.h > /dev/null; then
3619 gcc_cv_libc_provides_ssp=yes
3620 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
3621 $glibc_header_dir/features.h > /dev/null && \
3622 test -f $glibc_header_dir/bits/uClibc_config.h && \
3623 $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
3624 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
3625 gcc_cv_libc_provides_ssp=yes
3630 # Avoid complicated tests (see
3631 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
3632 # simply assert that glibc does provide this, which is true for all
3633 # realistically usable GNU/Hurd configurations.
3634 gcc_cv_libc_provides_ssp=yes;;
3636 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3637 [echo "no __stack_chk_fail on this target"])
3639 *) gcc_cv_libc_provides_ssp=no ;;
3642 if test x$gcc_cv_libc_provides_ssp = xyes; then
3643 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3644 [Define if your target C library provides stack protector support])
3647 # Check if TFmode long double should be used by default or not.
3648 # Some glibc targets used DFmode long double, but with glibc 2.4
3649 # and later they can use TFmode.
3651 powerpc*-*-linux* | \
3656 AC_ARG_WITH(long-double-128,
3657 [ --with-long-double-128 Use 128-bit long double by default.],
3658 gcc_cv_target_ldbl128="$with_long_double_128",
3659 [gcc_cv_target_ldbl128=no
3660 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3661 if test "x$with_sysroot" = x; then
3662 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3663 elif test "x$with_build_sysroot" != "x"; then
3664 glibc_header_dir="${with_build_sysroot}/usr/include"
3665 elif test "x$with_sysroot" = xyes; then
3666 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3668 glibc_header_dir="${with_sysroot}/usr/include"
3671 glibc_header_dir=/usr/include
3674 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3675 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3676 && gcc_cv_target_ldbl128=yes
3681 if test x$gcc_cv_target_ldbl128 = xyes; then
3682 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3683 [Define if TFmode long double should be the default])
3686 # Find out what GC implementation we want, or may, use.
3688 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3696 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3699 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3704 echo "Using $GGC for garbage collection."
3706 # Use the system's zlib library.
3708 zlibinc="-I\$(srcdir)/../zlib"
3709 AC_ARG_WITH(system-zlib,
3710 [ --with-system-zlib use installed libz],
3717 dnl Very limited version of automake's enable-maintainer-mode
3719 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3720 dnl maintainer-mode is disabled by default
3721 AC_ARG_ENABLE(maintainer-mode,
3722 [ --enable-maintainer-mode
3723 enable make rules and dependencies not useful
3724 (and sometimes confusing) to the casual installer],
3725 maintainer_mode=$enableval,
3728 AC_MSG_RESULT($maintainer_mode)
3730 if test "$maintainer_mode" = "yes"; then
3741 # Make empty files to contain the specs and options for each language.
3742 # Then add #include lines to for a compiler that has specs and/or options.
3748 # These (without "all_") are set in each config-lang.in.
3749 # `language' must be a single word so is spelled singularly.
3752 all_outputs='Makefile gccbug'
3753 # List of language makefile fragments.
3755 # List of language subdirectory makefiles. Deprecated.
3757 # Additional files for gengtype
3758 all_gtfiles="$target_gtfiles"
3760 # These are the languages that are set in --enable-languages,
3761 # and are available in the GCC tree.
3762 all_selected_languages=
3764 # Add the language fragments.
3765 # Languages are added via two mechanisms. Some information must be
3766 # recorded in makefile variables, these are defined in config-lang.in.
3767 # We accumulate them and plug them into the main Makefile.
3768 # The other mechanism is a set of hooks for each of the main targets
3769 # like `clean', `install', etc.
3771 language_hooks="Make-hooks"
3773 for lang in ${srcdir}/*/config-lang.in
3776 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3778 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3779 if test "x$lang_alias" = x
3781 echo "$lang doesn't set \$language." 1>&2
3784 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3785 subdirs="$subdirs $subdir"
3787 # $gcc_subdir is where the gcc integration files are to be found
3788 # for a language, both for internal compiler purposes (compiler
3789 # sources implementing front-end to GCC tree converters), and for
3790 # build infrastructure purposes (Make-lang.in, etc.)
3792 # This will be <subdir> (relative to $srcdir) if a line like
3793 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
3794 # is found in <langdir>/config-lang.in, and will remain <langdir>
3797 # Except for the language alias (fetched above), the regular
3798 # "config-lang.in" contents are always retrieved from $gcc_subdir,
3799 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
3800 # only this and the language alias.
3802 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
3803 if [ "$gcc_subdir" = "" ]; then
3804 gcc_subdir="$subdir"
3807 case ",$enable_languages," in
3809 all_selected_languages="$all_selected_languages $lang_alias"
3810 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
3811 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
3823 . ${srcdir}/$gcc_subdir/config-lang.in
3824 if test "x$language" = x
3826 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
3831 case ",$enable_languages," in
3834 for i in $subdir_requires; do
3835 test -f "${srcdir}/$i/config-lang.in" && continue
3843 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
3844 if test -f $srcdir/$gcc_subdir/lang.opt; then
3845 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
3847 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
3848 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
3850 if test -f ${srcdir}/$gcc_subdir/Makefile.in
3851 then all_lang_makefiles="$gcc_subdir/Makefile"
3853 all_languages="$all_languages $language"
3854 all_compilers="$all_compilers $compilers"
3855 all_outputs="$all_outputs $outputs"
3856 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
3859 # Pick up gtfiles for c
3861 . ${srcdir}/c-config-lang.in
3862 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
3865 for language in $all_selected_languages
3867 check_languages="$check_languages check-$language"
3870 # We link each language in with a set of hooks, reached indirectly via
3871 # lang.${target}. Only do so for selected languages.
3875 target_list="all.cross start.encap rest.encap tags \
3876 install-common install-man install-info install-pdf dvi pdf \
3877 html uninstall info man srcextra srcman srcinfo \
3878 mostlyclean clean distclean maintainer-clean"
3880 for t in $target_list
3883 for lang in $all_selected_languages
3887 echo "lang.$t: $x" >> Make-hooks
3896 echo "dir ." > .gdbinit
3897 echo "dir ${srcdir}" >> .gdbinit
3898 if test x$gdb_needs_out_file_path = xyes
3900 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3902 if test "x$subdirs" != x; then
3905 echo "dir ${srcdir}/$s" >> .gdbinit
3908 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3910 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
3911 AC_SUBST(gcc_tooldir)
3914 # Find a directory in which to install a shared libgcc.
3916 AC_ARG_ENABLE(version-specific-runtime-libs,
3917 [ --enable-version-specific-runtime-libs
3918 specify that runtime libraries should be
3919 installed in a compiler-specific directory])
3921 AC_ARG_WITH(slibdir,
3922 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3923 slibdir="$with_slibdir",
3924 if test "${enable_version_specific_runtime_libs+set}" = set; then
3925 slibdir='$(libsubdir)'
3926 elif test "$host" != "$target"; then
3927 slibdir='$(build_tooldir)/lib'
3933 AC_ARG_WITH(datarootdir,
3934 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3935 datarootdir="\${prefix}/$with_datarootdir",
3936 datarootdir='$(prefix)/share')
3937 AC_SUBST(datarootdir)
3940 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3941 docdir="\${prefix}/$with_docdir",
3942 docdir='$(datarootdir)')
3945 AC_ARG_WITH(htmldir,
3946 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3947 htmldir="\${prefix}/$with_htmldir",
3948 htmldir='$(docdir)')
3951 # Substitute configuration variables
3954 AC_SUBST(all_compilers)
3955 AC_SUBST(all_gtfiles)
3956 AC_SUBST(all_lang_makefrags)
3957 AC_SUBST(all_lang_makefiles)
3958 AC_SUBST(all_languages)
3959 AC_SUBST(all_selected_languages)
3960 AC_SUBST(build_exeext)
3961 AC_SUBST(build_install_headers_dir)
3962 AC_SUBST(build_xm_file_list)
3963 AC_SUBST(build_xm_include_list)
3964 AC_SUBST(build_xm_defines)
3965 AC_SUBST(build_file_translate)
3966 AC_SUBST(check_languages)
3967 AC_SUBST(cpp_install_dir)
3968 AC_SUBST(xmake_file)
3969 AC_SUBST(tmake_file)
3970 AC_SUBST(TM_ENDIAN_CONFIG)
3971 AC_SUBST(TM_MULTILIB_CONFIG)
3972 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
3973 AC_SUBST(extra_gcc_objs)
3974 AC_SUBST(extra_headers_list)
3975 AC_SUBST(extra_objs)
3976 AC_SUBST(extra_parts)
3977 AC_SUBST(extra_passes)
3978 AC_SUBST(extra_programs)
3979 AC_SUBST(float_h_file)
3980 AC_SUBST(gcc_config_arguments)
3981 AC_SUBST(gcc_gxx_include_dir)
3982 AC_SUBST(host_exeext)
3983 AC_SUBST(host_xm_file_list)
3984 AC_SUBST(host_xm_include_list)
3985 AC_SUBST(host_xm_defines)
3986 AC_SUBST(out_host_hook_obj)
3988 AC_SUBST(lang_opt_files)
3989 AC_SUBST(lang_specs_files)
3990 AC_SUBST(lang_tree_files)
3991 AC_SUBST(local_prefix)
3993 AC_SUBST(objc_boehm_gc)
3995 AC_SUBST(out_object_file)
3996 AC_SUBST(thread_file)
3997 AC_SUBST(tm_file_list)
3998 AC_SUBST(tm_include_list)
3999 AC_SUBST(tm_defines)
4000 AC_SUBST(tm_p_file_list)
4001 AC_SUBST(tm_p_include_list)
4002 AC_SUBST(xm_file_list)
4003 AC_SUBST(xm_include_list)
4004 AC_SUBST(xm_defines)
4005 AC_SUBST(use_gcc_stdint)
4006 AC_SUBST(c_target_objs)
4007 AC_SUBST(cxx_target_objs)
4008 AC_SUBST(fortran_target_objs)
4009 AC_SUBST(target_cpu_default)
4011 AC_SUBST_FILE(language_hooks)
4014 if test x${build} = x${host} ; then
4015 if test x${host} = x${target} ; then
4016 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4018 echo "Links are now set up to build a cross-compiler" 1>&2
4019 echo " from ${host} to ${target}." 1>&2
4022 if test x${host} = x${target} ; then
4023 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4024 echo " for ${target}." 1>&2
4026 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4027 echo " from ${host} to ${target}." 1>&2
4031 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4032 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4034 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4035 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4037 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4038 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4039 if test "x${CLOOGLIBS}" != "x" ; then
4040 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4043 # Check for plugin support
4044 AC_ARG_ENABLE(plugin,
4045 [ --enable-plugin enable plugin support],
4046 enable_plugin=$enableval,
4047 enable_plugin=yes; default_plugin=yes)
4050 if test x"$enable_plugin" = x"yes"; then
4051 # Check that the host supports -rdynamic and -ldl
4054 saved_LDFLAGS="$LDFLAGS"
4059 LDFLAGS="$LDFLAGS -rdynamic"
4060 AC_MSG_CHECKING([for -rdynamic])
4061 AC_TRY_LINK([],[return 0;],
4062 [AC_MSG_RESULT([yes]); have_rdynamic=yes],
4063 [AC_MSG_RESULT([no])])
4064 if test x"$have_rdynamic" = x"yes" ; then
4065 pluginlibs="-rdynamic"
4069 LDFLAGS="$LDFLAGS -ldl"
4070 AC_MSG_CHECKING([for -ldl])
4072 [#include <dlfcn.h>],
4073 [volatile int f = 0; if (f) dlopen ("dummy", 0);],
4074 [AC_MSG_RESULT([yes]); have_dl=yes],
4075 [AC_MSG_RESULT([no])])
4076 if test x"$have_dl" = x"yes"; then
4077 pluginlibs="$pluginlibs -ldl"
4080 # Check that we can build shared objects with -fPIC -shared
4081 LDFLAGS="$LDFLAGS -fPIC -shared"
4082 AC_MSG_CHECKING([for -fPIC -shared])
4084 [extern int X;],[return X == 0;],
4085 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
4086 [AC_MSG_RESULT([no]); have_pic_shared=no])
4087 if test x"$have_pic_shared" != x"yes"; then
4092 # If plugin support had been requested but not available, fail.
4093 if test x"$enable_plugin" = x"no" ; then
4094 if test x"$default_plugin" != x"yes"; then
4096 Building GCC with plugin support requires a host that supports
4097 -fPIC, -shared, -ldl and -rdynamic.])
4101 LDFLAGS="$saved_LDFLAGS"
4105 AC_SUBST(pluginlibs)
4106 AC_SUBST(enable_plugin)
4107 if test x"$enable_plugin" = x"yes"; then
4108 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
4111 # Configure the subdirectories
4112 # AC_CONFIG_SUBDIRS($subdirs)
4114 # Create the Makefile
4115 # and configure language subdirectories
4116 AC_CONFIG_FILES($all_outputs)
4118 AC_CONFIG_COMMANDS([default],
4120 case ${CONFIG_HEADERS} in
4121 *auto-host.h:config.in*)
4124 # Make sure all the subdirs exist.
4125 for d in $subdirs doc build
4127 test -d $d || mkdir $d
4130 [subdirs='$subdirs'])