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[] = $configure_default_options;
1498 # Internationalization
1499 ZW_GNU_GETTEXT_SISTER_DIR
1501 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1502 # -liconv on the link line twice.
1503 case "$LIBINTL" in *$LIBICONV*)
1507 AC_ARG_ENABLE(secureplt,
1508 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1512 [ --enable-cld enable -mcld by default for 32bit x86], [],
1515 # Windows32 Registry support for specifying GCC installation paths.
1516 AC_ARG_ENABLE(win32-registry,
1517 [ --disable-win32-registry
1518 disable lookup of installation paths in the
1519 Registry on Windows hosts
1520 --enable-win32-registry enable registry lookup (default)
1521 --enable-win32-registry=KEY
1522 use KEY instead of GCC version as the last portion
1523 of the registry key],,)
1526 win32 | pe | cygwin* | mingw32* | uwin*)
1527 if test "x$enable_win32_registry" != xno; then
1528 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1531 if test "x$enable_win32_registry" != xno; then
1532 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1533 [Define to 1 if installation paths should be looked up in the Windows
1534 Registry. Ignored on non-Windows hosts.])
1536 if test "x$enable_win32_registry" != xyes \
1537 && test "x$enable_win32_registry" != x; then
1538 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1539 [Define to be the last component of the Windows registry key under which
1540 to look for installation paths. The full key used will be
1541 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1542 The default is the GCC version number.])
1548 # Get an absolute path to the GCC top-level source directory
1549 holddir=`${PWDCMD-pwd}`
1551 topdir=`${PWDCMD-pwd}`
1554 # Conditionalize the makefile for this host machine.
1556 for f in ${host_xmake_file}
1558 if test -f ${srcdir}/config/$f
1560 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1564 # Conditionalize the makefile for this target machine.
1566 for f in ${tmake_file}
1568 if test -f ${srcdir}/config/$f
1570 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1573 tmake_file="${tmake_file_}"
1575 out_object_file=`basename $out_file .c`.o
1577 tm_file_list="options.h"
1578 tm_include_list="options.h"
1579 for f in $tm_file; do
1582 f=`echo $f | sed 's/^..//'`
1583 tm_file_list="${tm_file_list} $f"
1584 tm_include_list="${tm_include_list} $f"
1587 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1588 tm_include_list="${tm_include_list} $f"
1591 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1592 tm_include_list="${tm_include_list} config/$f"
1599 for f in $tm_p_file; do
1602 tm_p_file_list="${tm_p_file_list} $f"
1603 tm_p_include_list="${tm_p_include_list} $f"
1606 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1607 tm_p_include_list="${tm_p_include_list} config/$f"
1613 for f in $xm_file; do
1616 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1617 xm_include_list="${xm_include_list} $f"
1620 xm_file_list="${xm_file_list} $f"
1621 xm_include_list="${xm_include_list} $f"
1624 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1625 xm_include_list="${xm_include_list} config/$f"
1631 host_xm_include_list=
1632 for f in $host_xm_file; do
1635 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1636 host_xm_include_list="${host_xm_include_list} $f"
1639 host_xm_file_list="${host_xm_file_list} $f"
1640 host_xm_include_list="${host_xm_include_list} $f"
1643 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1644 host_xm_include_list="${host_xm_include_list} config/$f"
1650 for f in $build_xm_file; do
1653 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1654 build_xm_include_list="${build_xm_include_list} $f"
1656 auto-build.h | auto-host.h )
1657 build_xm_file_list="${build_xm_file_list} $f"
1658 build_xm_include_list="${build_xm_include_list} $f"
1661 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1662 build_xm_include_list="${build_xm_include_list} config/$f"
1667 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1668 # cross-compiler which does not use the native headers and libraries.
1669 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1670 CROSS= AC_SUBST(CROSS)
1671 ALL=all.internal AC_SUBST(ALL)
1672 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1674 if test "x$with_build_sysroot" != x; then
1675 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1677 # This value is used, even on a native system, because
1678 # CROSS_SYSTEM_HEADER_DIR is just
1679 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1680 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1683 if test x$host != x$target
1685 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1687 SYSTEM_HEADER_DIR=$build_system_header_dir
1688 case "$host","$target" in
1689 # Darwin crosses can use the host system's libraries and headers,
1690 # because of the fat library support. Of course, it must be the
1691 # same version of Darwin on both sides. Allow the user to
1692 # just say --target=foo-darwin without a version number to mean
1693 # "the version on this system".
1694 *-*-darwin*,*-*-darwin*)
1695 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1696 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1697 if test $hostos = $targetos -o $targetos = darwin ; then
1699 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1704 i?86-*-*,x86_64-*-* \
1705 | powerpc*-*-*,powerpc64*-*-*)
1706 CROSS="$CROSS -DNATIVE_CROSS" ;;
1708 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1709 SYSTEM_HEADER_DIR=$build_system_header_dir
1712 # If this is a cross-compiler that does not
1713 # have its own set of headers then define
1716 # If this is using newlib, without having the headers available now,
1717 # then define inhibit_libc in LIBGCC2_CFLAGS.
1718 # This prevents libgcc2 from containing any code which requires libc
1720 : ${inhibit_libc=false}
1721 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1722 test x$with_newlib = xyes ; } &&
1723 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1726 AC_SUBST(inhibit_libc)
1728 # When building gcc with a cross-compiler, we need to adjust things so
1729 # that the generator programs are still built with the native compiler.
1730 # Also, we cannot run fixincludes.
1732 # These are the normal (build=host) settings:
1733 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1734 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1735 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1736 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1738 # And these apply if build != host, or we are generating coverage data
1739 if test x$build != x$host || test "x$coverage_flags" != x
1741 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1742 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1745 # Expand extra_headers to include complete path.
1746 # This substitutes for lots of t-* files.
1748 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1749 for file in ${extra_headers} ; do
1750 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1753 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1754 if test x"$use_gcc_tgmath" = xyes
1755 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1758 # Define collect2 in Makefile.
1759 case $host_can_use_collect2 in
1761 *) collect2='collect2$(exeext)' ;;
1763 AC_SUBST([collect2])
1765 # Add a definition of USE_COLLECT2 if system wants one.
1766 case $use_collect2 in
1767 no) use_collect2= ;;
1770 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1771 xm_defines="${xm_defines} USE_COLLECT2"
1772 case $host_can_use_collect2 in
1774 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1780 # ---------------------------
1781 # Assembler & linker features
1782 # ---------------------------
1784 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1785 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1786 # However when ld-new is first executed from the build tree, libtool will
1787 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1788 # to the build tree. While doing this we need to use the previous-stage
1789 # linker, or we have an infinite loop. The presence of a shell script as
1790 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1791 # the gcc/collect-ld script. So we need to know how libtool works, or
1792 # exec-tool will fail.
1794 m4_defun([_LT_CONFIG_COMMANDS], [])
1797 AC_SUBST(enable_fast_install)
1799 # Identify the assembler which will work hand-in-glove with the newly
1800 # built GCC, so that we can examine its features. This is the assembler
1801 # which will be driven by the driver program.
1803 # If build != host, and we aren't building gas in-tree, we identify a
1804 # build->target assembler and hope that it will have the same features
1805 # as the host->target assembler we'll be using.
1806 gcc_cv_gas_major_version=
1807 gcc_cv_gas_minor_version=
1808 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1810 m4_pattern_allow([AS_FOR_TARGET])dnl
1811 AS_VAR_SET_IF(gcc_cv_as,, [
1812 if test -x "$DEFAULT_ASSEMBLER"; then
1813 gcc_cv_as="$DEFAULT_ASSEMBLER"
1814 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1815 && test -f ../gas/Makefile \
1816 && test x$build = x$host; then
1817 gcc_cv_as=../gas/as-new$build_exeext
1818 elif test -x as$build_exeext; then
1819 # Build using assembler in the current directory.
1820 gcc_cv_as=./as$build_exeext
1821 elif test -x $AS_FOR_TARGET; then
1822 gcc_cv_as="$AS_FOR_TARGET"
1824 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1827 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1828 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1829 case "$ORIGINAL_AS_FOR_TARGET" in
1830 ./as | ./as$build_exeext) ;;
1831 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1834 AC_MSG_CHECKING(what assembler to use)
1835 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1836 # Single tree build which includes gas. We want to prefer it
1837 # over whatever linker top-level may have detected, since
1838 # we'll use what we're building after installation anyway.
1839 AC_MSG_RESULT(newly built gas)
1841 _gcc_COMPUTE_GAS_VERSION
1842 in_tree_gas_is_elf=no
1843 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1844 || (grep 'obj_format = multi' ../gas/Makefile \
1845 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1847 in_tree_gas_is_elf=yes
1850 AC_MSG_RESULT($gcc_cv_as)
1854 # Identify the linker which will work hand-in-glove with the newly
1855 # built GCC, so that we can examine its features. This is the linker
1856 # which will be driven by the driver program.
1858 # If build != host, and we aren't building gas in-tree, we identify a
1859 # build->target linker and hope that it will have the same features
1860 # as the host->target linker we'll be using.
1861 gcc_cv_gld_major_version=
1862 gcc_cv_gld_minor_version=
1863 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1864 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1866 AS_VAR_SET_IF(gcc_cv_ld,, [
1867 if test -x "$DEFAULT_LINKER"; then
1868 gcc_cv_ld="$DEFAULT_LINKER"
1869 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1870 && test -f ../ld/Makefile \
1871 && test x$build = x$host; then
1872 gcc_cv_ld=../ld/ld-new$build_exeext
1873 elif test -x collect-ld$build_exeext; then
1874 # Build using linker in the current directory.
1875 gcc_cv_ld=./collect-ld$build_exeext
1876 elif test -x $LD_FOR_TARGET; then
1877 gcc_cv_ld="$LD_FOR_TARGET"
1879 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1882 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1883 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1884 case "$ORIGINAL_LD_FOR_TARGET" in
1885 ./collect-ld | ./collect-ld$build_exeext) ;;
1886 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1889 AC_MSG_CHECKING(what linker to use)
1890 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1891 # Single tree build which includes ld. We want to prefer it
1892 # over whatever linker top-level may have detected, since
1893 # we'll use what we're building after installation anyway.
1894 AC_MSG_RESULT(newly built ld)
1896 in_tree_ld_is_elf=no
1897 if (grep 'EMUL = .*elf' ../ld/Makefile \
1898 || grep 'EMUL = .*linux' ../ld/Makefile \
1899 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1900 in_tree_ld_is_elf=yes
1902 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
1905 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1906 if test x$gcc_cv_gld_version != x; then
1910 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1911 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1914 AC_MSG_RESULT($gcc_cv_ld)
1918 # Figure out what nm we will be using.
1919 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1920 AS_VAR_SET_IF(gcc_cv_nm,, [
1921 if test -f $gcc_cv_binutils_srcdir/configure.in \
1922 && test -f ../binutils/Makefile \
1923 && test x$build = x$host; then
1924 gcc_cv_nm=../binutils/nm-new$build_exeext
1925 elif test -x nm$build_exeext; then
1926 gcc_cv_nm=./nm$build_exeext
1927 elif test -x $NM_FOR_TARGET; then
1928 gcc_cv_nm="$NM_FOR_TARGET"
1930 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1933 AC_MSG_CHECKING(what nm to use)
1934 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1935 # Single tree build which includes binutils.
1936 AC_MSG_RESULT(newly built nm)
1939 AC_MSG_RESULT($gcc_cv_nm)
1943 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1944 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1945 case "$ORIGINAL_NM_FOR_TARGET" in
1946 ./nm | ./nm$build_exeext) ;;
1947 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
1951 # Figure out what objdump we will be using.
1952 AS_VAR_SET_IF(gcc_cv_objdump,, [
1953 if test -f $gcc_cv_binutils_srcdir/configure.in \
1954 && test -f ../binutils/Makefile \
1955 && test x$build = x$host; then
1956 # Single tree build which includes binutils.
1957 gcc_cv_objdump=../binutils/objdump$build_exeext
1958 elif test -x objdump$build_exeext; then
1959 gcc_cv_objdump=./objdump$build_exeext
1960 elif test -x $OBJDUMP_FOR_TARGET; then
1961 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
1963 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
1966 AC_MSG_CHECKING(what objdump to use)
1967 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
1968 # Single tree build which includes binutils.
1969 AC_MSG_RESULT(newly built objdump)
1970 elif test x$gcc_cv_objdump = x; then
1971 AC_MSG_RESULT(not found)
1973 AC_MSG_RESULT($gcc_cv_objdump)
1976 # Figure out what readelf we will be using.
1977 AS_VAR_SET_IF(gcc_cv_readelf,, [
1978 if test -f $gcc_cv_binutils_srcdir/configure.in \
1979 && test -f ../binutils/Makefile \
1980 && test x$build = x$host; then
1981 # Single tree build which includes binutils.
1982 gcc_cv_readelf=../binutils/readelf$build_exeext
1983 elif test -x readelf$build_exeext; then
1984 gcc_cv_readelf=./readelf$build_exeext
1986 AC_PATH_PROG(gcc_cv_readelf, readelf)
1989 AC_MSG_CHECKING(what readelf to use)
1990 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
1991 # Single tree build which includes binutils.
1992 AC_MSG_RESULT(newly built readelf)
1993 elif test x$gcc_cv_readelf = x; then
1994 AC_MSG_RESULT(not found)
1996 AC_MSG_RESULT($gcc_cv_readelf)
1999 # Figure out what assembler alignment features are present.
2000 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2004 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2005 [Define if your assembler supports .balign and .p2align.])])
2007 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2010 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2011 [Define if your assembler supports specifying the maximum number
2012 of bytes to skip when using the GAS .p2align command.])])
2014 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2017 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2018 [Define if your assembler supports .literal16.])])
2020 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2022 [conftest_label1: .word 0
2024 conftest_label2: .word 0
2026 [if test x$gcc_cv_nm != x; then
2027 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2028 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2029 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2031 else gcc_cv_as_subsection_m1=yes
2033 rm -f conftest.nm1 conftest.nm2
2035 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2036 [Define if your assembler supports .subsection and .subsection -1 starts
2037 emitting at the beginning of your section.])])
2039 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2042 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2044 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2046 [ .weakref foobar, barfnot],,
2047 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2049 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2052 .NSUBSPA $CODE$,COMDAT],,
2053 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2055 # .hidden needs to be supported in both the assembler and the linker,
2056 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2057 # This is irritatingly difficult to feature test for; we have to check the
2058 # date string after the version number. If we've got an in-tree
2059 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2061 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2062 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2067 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2068 [if test $in_tree_ld = yes ; then
2070 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2071 && test $in_tree_ld_is_elf = yes; then
2072 gcc_cv_ld_hidden=yes
2076 gcc_cv_ld_hidden=yes
2077 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2078 if echo "$ld_ver" | grep GNU > /dev/null; then
2079 ld_vers=`echo $ld_ver | sed -n \
2080 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2081 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2082 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2083 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2084 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2085 if test 0"$ld_date" -lt 20020404; then
2086 if test -n "$ld_date"; then
2087 # If there was date string, but was earlier than 2002-04-04, fail
2089 elif test -z "$ld_vers"; then
2090 # If there was no date string nor ld version number, something is wrong
2093 test -z "$ld_vers_patch" && ld_vers_patch=0
2094 if test "$ld_vers_major" -lt 2; then
2096 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2097 gcc_cv_ld_hidden="no"
2098 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2105 hppa64*-*-hpux* | ia64*-*-hpux*)
2106 gcc_cv_ld_hidden=yes
2108 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2109 gcc_cv_ld_hidden=yes
2118 libgcc_visibility=no
2119 AC_SUBST(libgcc_visibility)
2120 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2121 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2122 libgcc_visibility=yes
2123 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2124 [Define if your assembler and linker support .hidden.])
2127 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2128 gcc_cv_ld_ro_rw_mix=unknown
2129 if test $in_tree_ld = yes ; then
2130 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2131 && test $in_tree_ld_is_elf = yes; then
2132 gcc_cv_ld_ro_rw_mix=read-write
2134 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2135 echo '.section myfoosect, "a"' > conftest1.s
2136 echo '.section myfoosect, "aw"' > conftest2.s
2137 echo '.byte 1' >> conftest2.s
2138 echo '.section myfoosect, "a"' > conftest3.s
2139 echo '.byte 0' >> conftest3.s
2140 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2141 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2142 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2143 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2144 conftest2.o conftest3.o > /dev/null 2>&1; then
2145 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2146 | sed -e '/myfoosect/!d' -e N`
2147 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2148 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2149 gcc_cv_ld_ro_rw_mix=read-only
2151 gcc_cv_ld_ro_rw_mix=read-write
2156 rm -f conftest.* conftest[123].*
2159 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2160 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2161 [Define if your linker links a mix of read-only
2162 and read-write sections into a read-write section.])
2164 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2166 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2167 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2175 [# GAS versions before 2.11 do not support uleb128,
2176 # despite appearing to.
2177 # ??? There exists an elf-specific test that will crash
2178 # the assembler. Perhaps it's better to figure out whether
2179 # arbitrary sections are supported and try the test.
2180 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2181 if echo "$as_ver" | grep GNU > /dev/null; then
2183 as_vers=`echo $as_ver | sed -n \
2184 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2185 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2186 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2188 if test $as_major -eq 2 && test $as_minor -lt 11
2190 else gcc_cv_as_leb128=yes
2193 [AC_DEFINE(HAVE_AS_LEB128, 1,
2194 [Define if your assembler supports .sleb128 and .uleb128.])])
2196 # Check if we have assembler support for unwind directives.
2197 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2204 .cfi_escape 1, 2, 3, 4, 5
2208 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2209 # read-only and read-write sections, we need to make sure that the
2210 # assembler used emits read-write .eh_frame sections.
2211 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2212 if test "x$gcc_cv_objdump" != x; then
2213 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2214 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2215 gcc_cv_as_cfi_directive=no
2217 gcc_cv_as_cfi_directive=yes
2220 # no objdump, err on the side of caution
2221 gcc_cv_as_cfi_directive=no
2224 gcc_cv_as_cfi_directive=yes
2228 gcc_cv_as_cfi_directive=yes
2231 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_readelf != x; then
2232 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2236 .cfi_adjust_cfa_offset 64
2238 .cfi_adjust_cfa_offset 128
2242 if $gcc_cv_readelf -wf conftest.o 2>/dev/null \
2243 | grep 'DW_CFA_advance_loc[12]:[ ][ ]*512[ ]' >/dev/null; then
2244 gcc_cv_as_cfi_advance_working=yes
2249 # no readelf, err on the side of caution
2250 gcc_cv_as_cfi_advance_working=no
2252 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2253 [`if test $gcc_cv_as_cfi_directive = yes \
2254 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2255 [Define 0/1 if your assembler supports CFI directives.])
2257 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2258 gcc_cv_as_cfi_personality_directive, ,,
2261 .cfi_personality 0, symbol
2263 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2264 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2265 then echo 1; else echo 0; fi`],
2266 [Define 0/1 if your assembler supports .cfi_personality.])
2268 # GAS versions up to and including 2.11.0 may mis-optimize
2270 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2278 .section .eh_frame,"aw",@progbits
2280 .4byte .LECIE1-.LSCIE1
2294 .4byte .LEFDE1-.LASFDE1
2296 .4byte .LASFDE1-__FRAME_BEGIN__
2304 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2305 cat > conftest.lit <<EOF
2306 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2307 0010 01000000 12000000 18000000 00000000 ................
2308 0020 08000000 04080000 0044 .........D @&t@
2310 cat > conftest.big <<EOF
2311 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2312 0010 00000001 00000012 00000018 00000000 ................
2313 0020 00000008 04000000 0844 .........D @&t@
2315 # If the assembler didn't choke, and we can objdump,
2316 # and we got the correct data, then succeed.
2317 # The text in the here-document typically retains its unix-style line
2318 # endings, while the output of objdump will use host line endings.
2319 # Therefore, use diff -b for the comparisons.
2320 if test x$gcc_cv_objdump != x \
2321 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2322 | tail -3 > conftest.got \
2323 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2324 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2326 gcc_cv_as_eh_frame=yes
2327 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2328 gcc_cv_as_eh_frame=buggy
2330 # Uh oh, what do we do now?
2331 gcc_cv_as_eh_frame=no
2334 if test $gcc_cv_as_eh_frame = buggy; then
2335 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2336 [Define if your assembler mis-optimizes .eh_frame data.])
2339 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2340 [elf,2,12,0], [--fatal-warnings],
2341 [.section .rodata.str, "aMS", @progbits, 1])
2342 if test $gcc_cv_as_shf_merge = no; then
2343 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2344 [elf,2,12,0], [--fatal-warnings],
2345 [.section .rodata.str, "aMS", %progbits, 1])
2347 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2348 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2349 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2351 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2352 [elf,2,16,0], [--fatal-warnings],
2353 [.section .text,"axG",@progbits,.foo,comdat])
2354 if test $gcc_cv_as_comdat_group = yes; then
2355 gcc_cv_as_comdat_group_percent=no
2357 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2358 [elf,2,16,0], [--fatal-warnings],
2359 [.section .text,"axG",%progbits,.foo,comdat])
2361 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2363 if test 0"$ld_date" -lt 20050308; then
2364 if test -n "$ld_date"; then
2365 # If there was date string, but was earlier than 2005-03-08, fail
2367 elif test "$ld_vers_major" -lt 2; then
2369 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2374 # assume linkers other than GNU ld don't support COMDAT group
2377 if test $comdat_group = no; then
2378 gcc_cv_as_comdat_group=no
2379 gcc_cv_as_comdat_group_percent=no
2381 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2382 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2383 [Define 0/1 if your assembler and linker support COMDAT groups.])
2385 # Thread-local storage - the check is heavily parameterized.
2394 .section ".tdata","awT",@progbits
2397 ldq $27,__tls_get_addr($29) !literal!1
2398 lda $16,foo($29) !tlsgd!1
2399 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2400 ldq $27,__tls_get_addr($29) !literal!2
2401 lda $16,foo($29) !tlsldm!2
2402 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2403 ldq $1,foo($29) !gotdtprel
2404 ldah $2,foo($29) !dtprelhi
2405 lda $3,foo($2) !dtprello
2406 lda $4,foo($29) !dtprel
2407 ldq $1,foo($29) !gottprel
2408 ldah $2,foo($29) !tprelhi
2409 lda $3,foo($2) !tprello
2410 lda $4,foo($29) !tprel'
2413 tls_as_opt=--fatal-warnings
2415 cris-*-*|crisv32-*-*)
2417 .section ".tdata","awT",@progbits
2424 tls_as_opt=--fatal-warnings
2428 .section ".tdata","awT",@progbits
2440 .section ".tdata","awT",@progbits
2444 addil LT%foo-$tls_gdidx$,gp
2445 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2448 addil LT%foo-$tls_ldidx$,gp
2450 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2451 addil LR%foo-$tls_dtpoff$,%ret0
2452 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2454 addil LT%foo-$tls_ieoff$,gp
2455 ldw RT%foo-$tls_ieoff$(%r1),%t2
2458 addil LR%foo-$tls_leoff$,%t1
2459 ldo RR%foo-$tls_leoff$(%r1),%t2'
2462 tls_as_opt=--fatal-warnings
2466 .section ".tdata","awT",%progbits
2479 .section ".tdata","awT",@progbits
2483 leal foo@TLSGD(,%ebx,1), %eax
2484 leal foo@TLSLDM(%ebx), %eax
2485 leal foo@DTPOFF(%eax), %edx
2486 movl foo@GOTTPOFF(%ebx), %eax
2487 subl foo@GOTTPOFF(%ebx), %eax
2488 addl foo@GOTNTPOFF(%ebx), %eax
2489 movl foo@INDNTPOFF, %eax
2490 movl $foo@TPOFF, %eax
2491 subl $foo@TPOFF, %eax
2492 leal foo@NTPOFF(%ecx), %eax'
2495 tls_as_opt=--fatal-warnings
2499 .section ".tdata","awT",@progbits
2503 leaq foo@TLSGD(%rip), %rdi
2504 leaq foo@TLSLD(%rip), %rdi
2505 leaq foo@DTPOFF(%rax), %rdx
2506 movq foo@GOTTPOFF(%rip), %rax
2507 movq $foo@TPOFF, %rax'
2510 tls_as_opt=--fatal-warnings
2514 .section ".tdata","awT",@progbits
2517 addl r16 = @ltoff(@dtpmod(foo#)), gp
2518 addl r17 = @ltoff(@dtprel(foo#)), gp
2519 addl r18 = @ltoff(@tprel(foo#)), gp
2520 addl r19 = @dtprel(foo#), gp
2521 adds r21 = @dtprel(foo#), r13
2522 movl r23 = @dtprel(foo#)
2523 addl r20 = @tprel(foo#), gp
2524 adds r22 = @tprel(foo#), r13
2525 movl r24 = @tprel(foo#)'
2528 tls_as_opt=--fatal-warnings
2532 .section .tdata,"awT",@progbits
2536 addiu $4, $28, %tlsgd(x)
2537 addiu $4, $28, %tlsldm(x)
2538 lui $4, %dtprel_hi(x)
2539 addiu $4, $4, %dtprel_lo(x)
2540 lw $4, %gottprel(x)($28)
2541 lui $4, %tprel_hi(x)
2542 addiu $4, $4, %tprel_lo(x)'
2545 tls_as_opt='-32 --fatal-warnings'
2549 .section ".tdata","awT",@progbits
2557 addi 3,31,ld0@got@tlsgd
2559 addi 3,31,x1@got@tlsld
2562 addis 9,3,x2@dtprel@ha
2563 addi 9,9,x2@dtprel@l
2564 lwz 9,x3@got@tprel(31)
2567 addis 9,2,x2@tprel@ha
2568 addi 9,9,x2@tprel@l'
2571 tls_as_opt="-a32 --fatal-warnings"
2575 .section ".tdata","awT",@progbits
2583 addi 3,2,ld0@got@tlsgd
2589 addi 3,2,x1@got@tlsld
2595 addis 9,3,x2@dtprel@ha
2596 addi 9,9,x2@dtprel@l
2599 ld 9,x3@got@dtprel(2)
2605 tls_as_opt="-a64 --fatal-warnings"
2609 .section ".tdata","awT",@progbits
2618 l %r1,foo@GOTNTPOFF(%r12)
2619 l %r1,0(%r1):tls_load:foo
2620 bas %r14,0(%r1,%r13):tls_gdcall:foo
2621 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2624 tls_as_opt="-m31 --fatal-warnings"
2628 .section ".tdata","awT",@progbits
2636 lg %r1,foo@GOTNTPOFF(%r12)
2637 larl %r1,foo@INDNTPOFF
2638 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2639 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2642 tls_as_opt="-m64 -Aesame --fatal-warnings"
2644 sh-*-* | sh[34]-*-*)
2646 .section ".tdata","awT",@progbits
2656 tls_as_opt=--fatal-warnings
2660 sparc*-sun-solaris2.[56789]*)
2661 # TLS was introduced in the Solaris 9 4/04 release but
2662 # we do not enable it by default on Solaris 9 either.
2663 if test "x$enable_tls" = xyes ; then
2669 sparc*-sun-solaris2.*)
2676 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2678 .section ".tdata",#alloc,#write,#tls
2681 sethi %tgd_hi22(foo), %o0
2682 add %o0, %tgd_lo10(foo), %o1
2683 add %l7, %o1, %o0, %tgd_add(foo)
2684 call __tls_get_addr, %tgd_call(foo)
2685 sethi %tldm_hi22(foo), %l1
2686 add %l1, %tldm_lo10(foo), %l2
2687 add %l7, %l2, %o0, %tldm_add(foo)
2688 call __tls_get_addr, %tldm_call(foo)
2689 sethi %tldo_hix22(foo), %l3
2690 xor %l3, %tldo_lox10(foo), %l4
2691 add %o0, %l4, %l5, %tldo_add(foo)
2692 sethi %tie_hi22(foo), %o3
2693 add %o3, %tie_lo10(foo), %o3
2694 ld [%l7 + %o3], %o2, %tie_ld(foo)
2695 add %g7, %o2, %o4, %tie_add(foo)
2696 sethi %tle_hix22(foo), %l1
2697 xor %l1, %tle_lox10(foo), %o5
2698 ld [%g7 + %o5], %o1'
2703 .section ".tdata","awT",@progbits
2706 sethi %tgd_hi22(foo), %o0
2707 add %o0, %tgd_lo10(foo), %o1
2708 add %l7, %o1, %o0, %tgd_add(foo)
2709 call __tls_get_addr, %tgd_call(foo)
2710 sethi %tldm_hi22(foo), %l1
2711 add %l1, %tldm_lo10(foo), %l2
2712 add %l7, %l2, %o0, %tldm_add(foo)
2713 call __tls_get_addr, %tldm_call(foo)
2714 sethi %tldo_hix22(foo), %l3
2715 xor %l3, %tldo_lox10(foo), %l4
2716 add %o0, %l4, %l5, %tldo_add(foo)
2717 sethi %tie_hi22(foo), %o3
2718 add %o3, %tie_lo10(foo), %o3
2719 ld [%l7 + %o3], %o2, %tie_ld(foo)
2720 add %g7, %o2, %o4, %tie_add(foo)
2721 sethi %tle_hix22(foo), %l1
2722 xor %l1, %tle_lox10(foo), %o5
2723 ld [%g7 + %o5], %o1'
2726 tls_as_opt="-32 --fatal-warnings"
2731 .section ".tdata","awT",@progbits
2734 movi a8, foo@TLSFUNC
2735 movi a10, foo@TLSARG
2736 callx8.tls a8, foo@TLSCALL'
2743 if test "x$enable_tls" = xno ; then
2744 : # TLS explicitly disabled.
2745 elif test "x$enable_tls" = xyes ; then
2746 set_have_as_tls=yes # TLS explicitly enabled.
2747 elif test -z "$tls_first_major"; then
2748 : # If we don't have a check, assume no support.
2750 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2751 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2752 [set_have_as_tls=yes])
2754 if test $set_have_as_tls = yes ; then
2755 AC_DEFINE(HAVE_AS_TLS, 1,
2756 [Define if your assembler supports thread-local storage.])
2759 # Target-specific assembler checks.
2761 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2762 gcc_cv_ld_static_dynamic=no
2763 if test $in_tree_ld = yes ; then
2764 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
2765 gcc_cv_ld_static_dynamic=yes
2767 elif test x$gcc_cv_ld != x; then
2768 # Check if linker supports -Bstatic/-Bdynamic option
2769 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2770 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2771 gcc_cv_ld_static_dynamic=yes
2774 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2775 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2776 [Define if your linker supports -Bstatic/-Bdynamic option.])
2778 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2780 if test x"$demangler_in_ld" = xyes; then
2781 AC_MSG_CHECKING(linker --demangle support)
2782 gcc_cv_ld_demangle=no
2783 if test $in_tree_ld = yes; then
2784 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2785 gcc_cv_ld_demangle=yes
2787 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2788 # Check if the GNU linker supports --demangle option
2789 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2790 gcc_cv_ld_demangle=yes
2793 if test x"$gcc_cv_ld_demangle" = xyes; then
2794 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2795 [Define if your linker supports --demangle option.])
2797 AC_MSG_RESULT($gcc_cv_ld_demangle)
2801 # All TARGET_ABI_OSF targets.
2802 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2803 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2804 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2807 extbl $3, $2, $3 !lituse_bytoff!1
2808 ldq $2, a($29) !literal!1
2809 ldq $4, b($29) !literal!2
2810 ldq_u $3, 0($2) !lituse_base!1
2811 ldq $27, f($29) !literal!5
2812 jsr $26, ($27), f !lituse_jsr!5
2813 ldah $29, 0($26) !gpdisp!3
2814 lda $0, c($29) !gprel
2815 ldah $1, d($29) !gprelhigh
2816 lda $1, d($1) !gprellow
2817 lda $29, 0($29) !gpdisp!3],,
2818 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2819 [Define if your assembler supports explicit relocations.])])
2820 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2821 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2824 ldq $27, a($29) !literal!1
2825 jsr $26, ($27), a !lituse_jsrdirect!1],,
2826 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2827 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2831 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2832 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2833 [-no-mul-bug-abort], [.text],,
2834 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2835 [Define if your assembler supports the -no-mul-bug-abort option.])])
2839 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2840 [.register %g2, #scratch],,
2841 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2842 [Define if your assembler supports .register.])])
2844 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2846 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2847 [Define if your assembler supports -relax option.])])
2849 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2850 gcc_cv_as_sparc_ua_pcrel,,
2858 .uaword %r_disp32(foo)],
2859 [if test x$gcc_cv_ld != x \
2860 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2861 gcc_cv_as_sparc_ua_pcrel=yes
2864 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2865 [Define if your assembler and linker support unaligned PC relative relocs.])
2867 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2868 gcc_cv_as_sparc_ua_pcrel_hidden,,
2873 .uaword %r_disp32(foo)
2874 .byte 0x32, 0x33, 0x34
2879 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2880 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2881 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2882 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2883 if $gcc_cv_objdump -R conftest 2> /dev/null \
2884 | grep 'DISP32' > /dev/null 2>&1; then
2887 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2891 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2892 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2893 ]) # unaligned pcrel relocs
2895 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2896 gcc_cv_as_sparc_offsetable_lo10,,
2899 or %g1, %lo(ab) + 12, %g1
2900 or %g1, %lo(ab + 12), %g1],
2901 [if test x$gcc_cv_objdump != x \
2902 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2903 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2904 gcc_cv_as_sparc_offsetable_lo10=yes
2906 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2907 [Define if your assembler supports offsetable %lo().])])
2911 i[34567]86-*-* | x86_64-*-*)
2914 cygwin* | pe | mingw32*)
2915 # Used for DWARF 2 in PE
2916 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2917 gcc_cv_as_ix86_pe_secrel32,
2923 [if test x$gcc_cv_ld != x \
2924 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2925 gcc_cv_as_ix86_pe_secrel32=yes
2928 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2929 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2933 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2934 gcc_cv_as_ix86_filds_fists,
2935 [2,9,0],, [filds mem; fists mem],,
2936 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2937 [Define if your assembler uses the new HImode fild and fist notation.])])
2939 gcc_GAS_CHECK_FEATURE([cmov syntax],
2940 gcc_cv_as_ix86_cmov_sun_syntax,,,
2941 [cmovl.l %edx, %eax],,
2942 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2943 [Define if your assembler supports the Sun syntax for cmov.])])
2945 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2946 gcc_cv_as_ix86_ffreep,,,
2948 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2949 [Define if your assembler supports the ffreep mnemonic.])])
2951 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
2952 gcc_cv_as_ix86_sahf,,,
2954 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
2955 [Define if your assembler supports the sahf mnemonic.])])
2957 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2958 gcc_cv_as_ix86_diff_sect_delta,,,
2966 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2967 [Define if your assembler supports the subtraction of symbols in different sections.])])
2969 # This one is used unconditionally by i386.[ch]; it is to be defined
2970 # to 1 if the feature is present, 0 otherwise.
2971 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2972 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2978 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2979 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2980 [Define true if the assembler supports '.long foo@GOTOFF'.])
2984 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2985 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2987 addl r15 = @ltoffx(x#), gp
2989 ld8.mov r16 = [[r15]], x#],,
2990 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2991 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2997 *-*-aix*) conftest_s=' .machine "pwr5"
3001 gcc_GAS_CHECK_FEATURE([.machine directive support],
3002 gcc_cv_as_machine_directive,,,
3003 [ .machine ppc7400])
3004 if test x$gcc_cv_as_machine_directive != xyes; then
3005 echo "*** This target requires an assembler supporting \".machine\"" >&2
3006 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3007 test x$build = x$target && exit 1
3011 *) conftest_s=' .machine power4
3016 gcc_GAS_CHECK_FEATURE([mfcr field support],
3017 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3019 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3020 [Define if your assembler supports mfcr field.])])
3023 *-*-aix*) conftest_s=' .machine "pwr5"
3026 *) conftest_s=' .machine power5
3031 gcc_GAS_CHECK_FEATURE([popcntb support],
3032 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3034 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3035 [Define if your assembler supports popcntb field.])])
3038 *-*-aix*) conftest_s=' .machine "pwr5x"
3041 *) conftest_s=' .machine power5
3046 gcc_GAS_CHECK_FEATURE([fp round support],
3047 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3049 [AC_DEFINE(HAVE_AS_FPRND, 1,
3050 [Define if your assembler supports fprnd.])])
3053 *-*-aix*) conftest_s=' .machine "pwr6"
3056 *) conftest_s=' .machine power6
3061 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3062 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
3064 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3065 [Define if your assembler supports mffgpr and mftgpr.])])
3068 *-*-aix*) conftest_s=' .csect .text[[PR]]
3070 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3074 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3075 *) conftest_s=' .text
3077 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3080 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3081 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3083 [AC_DEFINE(HAVE_AS_REL16, 1,
3084 [Define if your assembler supports R_PPC_REL16 relocs.])])
3087 *-*-aix*) conftest_s=' .machine "pwr6"
3090 *) conftest_s=' .machine power6
3095 gcc_GAS_CHECK_FEATURE([compare bytes support],
3096 gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
3098 [AC_DEFINE(HAVE_AS_CMPB, 1,
3099 [Define if your assembler supports cmpb.])])
3102 *-*-aix*) conftest_s=' .machine "pwr6"
3105 *) conftest_s=' .machine power6
3110 gcc_GAS_CHECK_FEATURE([decimal float support],
3111 gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
3113 [AC_DEFINE(HAVE_AS_DFP, 1,
3114 [Define if your assembler supports DFP instructions.])])
3117 *-*-aix*) conftest_s=' .machine "pwr7"
3120 *) conftest_s=' .machine power7
3125 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3126 gcc_cv_as_powerpc_vsx, [9,99,0], -a32,
3128 [AC_DEFINE(HAVE_AS_VSX, 1,
3129 [Define if your assembler supports VSX instructions.])])
3131 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3132 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3133 [.gnu_attribute 4,1],,
3134 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3135 [Define if your assembler supports .gnu_attribute.])])
3137 gcc_GAS_CHECK_FEATURE([tls marker support],
3138 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3139 [ bl __tls_get_addr(x@tlsgd)],,
3140 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3141 [Define if your assembler supports arg info for __tls_get_addr.])])
3145 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3146 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3147 [ lw $4,%gp_rel(foo)($4)],,
3148 [if test x$target_cpu_default = x
3149 then target_cpu_default=MASK_EXPLICIT_RELOCS
3150 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3152 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3153 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3154 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3155 [Define if the assembler understands -mno-shared.])])
3157 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3158 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3159 [.gnu_attribute 4,1],,
3160 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3161 [Define if your assembler supports .gnu_attribute.])])
3163 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3164 gcc_cv_as_mips_dtprelword, [2,18,0],,
3165 [.section .tdata,"awT",@progbits
3169 .dtprelword x+0x8000],,
3170 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3171 [Define if your assembler supports .dtprelword.])])
3175 # Mips and HP-UX need the GNU assembler.
3176 # Linux on IA64 might be able to use the Intel assembler.
3179 mips*-*-* | *-*-hpux* )
3180 if test x$gas_flag = xyes \
3181 || test x"$host" != x"$build" \
3182 || test ! -x "$gcc_cv_as" \
3183 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3186 echo "*** This configuration requires the GNU assembler" >&2
3192 # ??? Not all targets support dwarf2 debug_line, even within a version
3193 # of gas. Moreover, we need to emit a valid instruction to trigger any
3194 # info to the output file. So, as supported targets are added to gas 2.11,
3195 # add some instruction here to (also) show we expect this might work.
3196 # ??? Once 2.11 is released, probably need to add first known working
3197 # version to the per-target configury.
3199 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3200 | x86_64*-*-* | hppa*-*-* | arm*-*-* \
3201 | xstormy16*-*-* | cris-*-* | crisv32-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \
3202 | spu-*-* | fido*-*-* | m32c-*-*)
3205 ia64*-*-* | s390*-*-*)
3212 if test x"$insn" != x; then
3214 .file 1 \"conftest.s\"
3217 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3218 gcc_cv_as_dwarf2_debug_line,
3219 [elf,2,11,0],, [$conftest_s],
3220 [if test x$gcc_cv_objdump != x \
3221 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3222 | grep debug_line > /dev/null 2>&1; then
3223 gcc_cv_as_dwarf2_debug_line=yes
3226 # The .debug_line file table must be in the exact order that
3227 # we specified the files, since these indices are also used
3228 # by DW_AT_decl_file. Approximate this test by testing if
3229 # the assembler bitches if the same index is assigned twice.
3230 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3231 gcc_cv_as_dwarf2_file_buggy,,,
3235 if test $gcc_cv_as_dwarf2_debug_line = yes \
3236 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3237 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3238 [Define if your assembler supports dwarf2 .file/.loc directives,
3239 and preserves file table indices exactly as given.])
3242 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3243 gcc_cv_as_gdwarf2_flag,
3244 [elf,2,11,0], [--gdwarf2], [$insn],,
3245 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3246 [Define if your assembler supports the --gdwarf2 option.])])
3248 gcc_GAS_CHECK_FEATURE([--gstabs option],
3249 gcc_cv_as_gstabs_flag,
3250 [elf,2,11,0], [--gstabs], [$insn],
3251 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3252 # and warns about it, but still exits successfully. So check for
3254 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3256 else gcc_cv_as_gstabs_flag=yes
3258 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3259 [Define if your assembler supports the --gstabs option.])])
3261 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3262 gcc_cv_as_debug_prefix_map_flag,
3263 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3264 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3265 [Define if your assembler supports the --debug-prefix-map option.])])
3268 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3271 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3272 [Define if your assembler supports .lcomm with an alignment field.])])
3274 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3275 [gcc_cv_as_line_zero],
3276 [gcc_cv_as_line_zero=no
3277 if test $in_tree_gas = yes; then
3278 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3279 elif test "x$gcc_cv_as" != x; then
3280 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3281 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3282 test "x`cat conftest.out`" = x
3284 gcc_cv_as_line_zero=yes
3286 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3287 cat conftest.s >&AS_MESSAGE_LOG_FD
3288 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3289 cat conftest.out >&AS_MESSAGE_LOG_FD
3291 rm -f conftest.o conftest.s conftest.out
3293 if test "x$gcc_cv_as_line_zero" = xyes; then
3294 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3295 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3298 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3299 gcc_cv_ld_eh_frame_hdr=no
3300 if test $in_tree_ld = yes ; then
3301 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3302 && test $in_tree_ld_is_elf = yes; then
3303 gcc_cv_ld_eh_frame_hdr=yes
3305 elif test x$gcc_cv_ld != x; then
3306 # Check if linker supports --eh-frame-hdr option
3307 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3308 gcc_cv_ld_eh_frame_hdr=yes
3311 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3312 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3313 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3314 [Define if your linker supports --eh-frame-hdr option.])
3316 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3318 AC_MSG_CHECKING(linker position independent executable support)
3320 if test $in_tree_ld = yes ; then
3321 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3322 && test $in_tree_ld_is_elf = yes; then
3325 elif test x$gcc_cv_ld != x; then
3326 # Check if linker supports -pie option
3327 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3331 if test x"$gcc_cv_ld_pie" = xyes; then
3332 AC_DEFINE(HAVE_LD_PIE, 1,
3333 [Define if your linker supports -pie option.])
3335 AC_MSG_RESULT($gcc_cv_ld_pie)
3337 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3338 gcc_cv_ld_eh_gc_sections=no
3339 if test $in_tree_ld = yes ; then
3340 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3341 && test $in_tree_ld_is_elf = yes; then
3342 gcc_cv_ld_eh_gc_sections=yes
3344 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3345 cat > conftest.s <<EOF
3348 .type _start, @function
3351 .size _start, .-_start
3352 .section .text.foo,"ax",@progbits
3353 .type foo, @function
3357 .section .gcc_except_table.foo,"a",@progbits
3360 .section .eh_frame,"a",@progbits
3363 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3364 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3365 | grep "gc-sections option ignored" > /dev/null; then
3366 gcc_cv_ld_eh_gc_sections=no
3367 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3368 gcc_cv_ld_eh_gc_sections=yes
3369 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3370 if test x$gcc_cv_as_comdat_group != xyes; then
3371 gcc_cv_ld_eh_gc_sections=no
3372 cat > conftest.s <<EOF
3375 .type _start, @function
3378 .size _start, .-_start
3379 .section .gnu.linkonce.t.foo,"ax",@progbits
3380 .type foo, @function
3384 .section .gcc_except_table.foo,"a",@progbits
3387 .section .eh_frame,"a",@progbits
3390 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3391 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3392 | grep "gc-sections option ignored" > /dev/null; then
3393 gcc_cv_ld_eh_gc_sections=no
3394 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3395 gcc_cv_ld_eh_gc_sections=yes
3401 rm -f conftest.s conftest.o conftest
3405 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3406 gcc_cv_ld_eh_gc_sections=no
3409 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3410 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3411 [Define if your linker supports garbage collection of
3412 sections in presence of EH frames.])
3414 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3420 AC_CACHE_CHECK(linker --as-needed support,
3421 gcc_cv_ld_as_needed,
3422 [gcc_cv_ld_as_needed=no
3423 if test $in_tree_ld = yes ; then
3424 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3425 && test $in_tree_ld_is_elf = yes; then
3426 gcc_cv_ld_as_needed=yes
3428 elif test x$gcc_cv_ld != x; then
3429 # Check if linker supports --as-needed and --no-as-needed options
3430 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3431 gcc_cv_ld_as_needed=yes
3435 if test x"$gcc_cv_ld_as_needed" = xyes; then
3436 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3437 [Define if your linker supports --as-needed and --no-as-needed options.])
3440 case "$target:$tm_file" in
3441 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3442 AC_CACHE_CHECK(linker support for omitting dot symbols,
3443 gcc_cv_ld_no_dot_syms,
3444 [gcc_cv_ld_no_dot_syms=no
3445 if test $in_tree_ld = yes ; then
3446 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3447 gcc_cv_ld_no_dot_syms=yes
3449 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3450 cat > conftest1.s <<EOF
3454 cat > conftest2.s <<EOF
3455 .section ".opd","aw"
3460 .quad .LEfoo,.TOC.@tocbase,0
3466 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3467 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3468 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3469 gcc_cv_ld_no_dot_syms=yes
3471 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3474 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3475 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3476 [Define if your PowerPC64 linker only needs function descriptor syms.])
3481 AC_CACHE_CHECK(linker --sysroot support,
3483 [gcc_cv_ld_sysroot=no
3484 if test $in_tree_ld = yes ; then
3485 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3486 gcc_cv_ld_sysroot=yes
3488 elif test x$gcc_cv_ld != x; then
3489 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3490 gcc_cv_ld_sysroot=yes
3493 if test x"$gcc_cv_ld_sysroot" = xyes; then
3494 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3495 [Define if your linker supports --sysroot.])
3498 if test x$with_sysroot = x && test x$host = x$target \
3499 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3500 && test "$prefix" != "NONE"; then
3501 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3502 [Define to PREFIX/include if cpp should also search that directory.])
3505 # Test for stack protector support in target C library.
3506 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3507 gcc_cv_libc_provides_ssp,
3508 [gcc_cv_libc_provides_ssp=no
3510 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
3511 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3512 if test "x$with_sysroot" = x; then
3513 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3514 elif test "x$with_build_sysroot" != "x"; then
3515 glibc_header_dir="${with_build_sysroot}/usr/include"
3516 elif test "x$with_sysroot" = xyes; then
3517 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3519 glibc_header_dir="${with_sysroot}/usr/include"
3522 glibc_header_dir=/usr/include
3524 # glibc 2.4 and later provides __stack_chk_fail and
3525 # either __stack_chk_guard, or TLS access to stack guard canary.
3526 if test -f $glibc_header_dir/features.h \
3527 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3528 $glibc_header_dir/features.h > /dev/null; then
3529 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3530 $glibc_header_dir/features.h > /dev/null; then
3531 gcc_cv_libc_provides_ssp=yes
3532 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3533 $glibc_header_dir/features.h > /dev/null \
3534 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3535 $glibc_header_dir/features.h > /dev/null; then
3536 gcc_cv_libc_provides_ssp=yes
3537 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
3538 $glibc_header_dir/features.h > /dev/null && \
3539 test -f $glibc_header_dir/bits/uClibc_config.h && \
3540 $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
3541 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
3542 gcc_cv_libc_provides_ssp=yes
3547 # Avoid complicated tests (see
3548 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
3549 # simply assert that glibc does provide this, which is true for all
3550 # realistically usable GNU/Hurd configurations.
3551 gcc_cv_libc_provides_ssp=yes;;
3553 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3554 [echo "no __stack_chk_fail on this target"])
3556 *) gcc_cv_libc_provides_ssp=no ;;
3559 if test x$gcc_cv_libc_provides_ssp = xyes; then
3560 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3561 [Define if your target C library provides stack protector support])
3564 # Check if TFmode long double should be used by default or not.
3565 # Some glibc targets used DFmode long double, but with glibc 2.4
3566 # and later they can use TFmode.
3568 powerpc*-*-linux* | \
3573 AC_ARG_WITH(long-double-128,
3574 [ --with-long-double-128 Use 128-bit long double by default.],
3575 gcc_cv_target_ldbl128="$with_long_double_128",
3576 [gcc_cv_target_ldbl128=no
3577 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3578 if test "x$with_sysroot" = x; then
3579 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3580 elif test "x$with_build_sysroot" != "x"; then
3581 glibc_header_dir="${with_build_sysroot}/usr/include"
3582 elif test "x$with_sysroot" = xyes; then
3583 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3585 glibc_header_dir="${with_sysroot}/usr/include"
3588 glibc_header_dir=/usr/include
3591 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3592 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3593 && gcc_cv_target_ldbl128=yes
3598 if test x$gcc_cv_target_ldbl128 = xyes; then
3599 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3600 [Define if TFmode long double should be the default])
3603 # Find out what GC implementation we want, or may, use.
3605 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3613 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3616 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3621 echo "Using $GGC for garbage collection."
3623 # Use the system's zlib library.
3625 zlibinc="-I\$(srcdir)/../zlib"
3626 AC_ARG_WITH(system-zlib,
3627 [ --with-system-zlib use installed libz],
3634 dnl Very limited version of automake's enable-maintainer-mode
3636 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3637 dnl maintainer-mode is disabled by default
3638 AC_ARG_ENABLE(maintainer-mode,
3639 [ --enable-maintainer-mode
3640 enable make rules and dependencies not useful
3641 (and sometimes confusing) to the casual installer],
3642 maintainer_mode=$enableval,
3645 AC_MSG_RESULT($maintainer_mode)
3647 if test "$maintainer_mode" = "yes"; then
3658 # Make empty files to contain the specs and options for each language.
3659 # Then add #include lines to for a compiler that has specs and/or options.
3665 # These (without "all_") are set in each config-lang.in.
3666 # `language' must be a single word so is spelled singularly.
3669 all_outputs='Makefile gccbug'
3670 # List of language makefile fragments.
3672 # List of language subdirectory makefiles. Deprecated.
3674 # Additional files for gengtype
3675 all_gtfiles="$target_gtfiles"
3677 # These are the languages that are set in --enable-languages,
3678 # and are available in the GCC tree.
3679 all_selected_languages=
3681 # Add the language fragments.
3682 # Languages are added via two mechanisms. Some information must be
3683 # recorded in makefile variables, these are defined in config-lang.in.
3684 # We accumulate them and plug them into the main Makefile.
3685 # The other mechanism is a set of hooks for each of the main targets
3686 # like `clean', `install', etc.
3688 language_hooks="Make-hooks"
3690 for lang in ${srcdir}/*/config-lang.in
3693 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3695 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3696 if test "x$lang_alias" = x
3698 echo "$lang doesn't set \$language." 1>&2
3701 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3702 subdirs="$subdirs $subdir"
3704 # $gcc_subdir is where the gcc integration files are to be found
3705 # for a language, both for internal compiler purposes (compiler
3706 # sources implementing front-end to GCC tree converters), and for
3707 # build infrastructure purposes (Make-lang.in, etc.)
3709 # This will be <subdir> (relative to $srcdir) if a line like
3710 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
3711 # is found in <langdir>/config-lang.in, and will remain <langdir>
3714 # Except for the language alias (fetched above), the regular
3715 # "config-lang.in" contents are always retrieved from $gcc_subdir,
3716 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
3717 # only this and the language alias.
3719 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
3720 if [ "$gcc_subdir" = "" ]; then
3721 gcc_subdir="$subdir"
3724 case ",$enable_languages," in
3726 all_selected_languages="$all_selected_languages $lang_alias"
3727 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
3728 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
3740 . ${srcdir}/$gcc_subdir/config-lang.in
3741 if test "x$language" = x
3743 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
3748 case ",$enable_languages," in
3751 for i in $subdir_requires; do
3752 test -f "${srcdir}/$i/config-lang.in" && continue
3760 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
3761 if test -f $srcdir/$gcc_subdir/lang.opt; then
3762 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
3764 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
3765 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
3767 if test -f ${srcdir}/$gcc_subdir/Makefile.in
3768 then all_lang_makefiles="$gcc_subdir/Makefile"
3770 all_languages="$all_languages $language"
3771 all_compilers="$all_compilers $compilers"
3772 all_outputs="$all_outputs $outputs"
3773 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
3776 # Pick up gtfiles for c
3778 . ${srcdir}/c-config-lang.in
3779 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
3782 for language in $all_selected_languages
3784 check_languages="$check_languages check-$language"
3787 # We link each language in with a set of hooks, reached indirectly via
3788 # lang.${target}. Only do so for selected languages.
3792 target_list="all.cross start.encap rest.encap tags \
3793 install-common install-man install-info install-pdf dvi pdf \
3794 html uninstall info man srcextra srcman srcinfo \
3795 mostlyclean clean distclean maintainer-clean"
3797 for t in $target_list
3800 for lang in $all_selected_languages
3804 echo "lang.$t: $x" >> Make-hooks
3813 echo "dir ." > .gdbinit
3814 echo "dir ${srcdir}" >> .gdbinit
3815 if test x$gdb_needs_out_file_path = xyes
3817 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3819 if test "x$subdirs" != x; then
3822 echo "dir ${srcdir}/$s" >> .gdbinit
3825 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3827 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
3828 AC_SUBST(gcc_tooldir)
3831 # Find a directory in which to install a shared libgcc.
3833 AC_ARG_ENABLE(version-specific-runtime-libs,
3834 [ --enable-version-specific-runtime-libs
3835 specify that runtime libraries should be
3836 installed in a compiler-specific directory])
3838 AC_ARG_WITH(slibdir,
3839 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3840 slibdir="$with_slibdir",
3841 if test "${enable_version_specific_runtime_libs+set}" = set; then
3842 slibdir='$(libsubdir)'
3843 elif test "$host" != "$target"; then
3844 slibdir='$(build_tooldir)/lib'
3850 AC_ARG_WITH(datarootdir,
3851 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3852 datarootdir="\${prefix}/$with_datarootdir",
3853 datarootdir='$(prefix)/share')
3854 AC_SUBST(datarootdir)
3857 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3858 docdir="\${prefix}/$with_docdir",
3859 docdir='$(datarootdir)')
3862 AC_ARG_WITH(htmldir,
3863 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3864 htmldir="\${prefix}/$with_htmldir",
3865 htmldir='$(docdir)')
3868 # Substitute configuration variables
3871 AC_SUBST(all_compilers)
3872 AC_SUBST(all_gtfiles)
3873 AC_SUBST(all_lang_makefrags)
3874 AC_SUBST(all_lang_makefiles)
3875 AC_SUBST(all_languages)
3876 AC_SUBST(all_selected_languages)
3877 AC_SUBST(build_exeext)
3878 AC_SUBST(build_install_headers_dir)
3879 AC_SUBST(build_xm_file_list)
3880 AC_SUBST(build_xm_include_list)
3881 AC_SUBST(build_xm_defines)
3882 AC_SUBST(build_file_translate)
3883 AC_SUBST(check_languages)
3884 AC_SUBST(cpp_install_dir)
3885 AC_SUBST(xmake_file)
3886 AC_SUBST(tmake_file)
3887 AC_SUBST(TM_ENDIAN_CONFIG)
3888 AC_SUBST(TM_MULTILIB_CONFIG)
3889 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
3890 AC_SUBST(extra_gcc_objs)
3891 AC_SUBST(extra_headers_list)
3892 AC_SUBST(extra_objs)
3893 AC_SUBST(extra_parts)
3894 AC_SUBST(extra_passes)
3895 AC_SUBST(extra_programs)
3896 AC_SUBST(float_h_file)
3897 AC_SUBST(gcc_config_arguments)
3898 AC_SUBST(gcc_gxx_include_dir)
3899 AC_SUBST(host_exeext)
3900 AC_SUBST(host_xm_file_list)
3901 AC_SUBST(host_xm_include_list)
3902 AC_SUBST(host_xm_defines)
3903 AC_SUBST(out_host_hook_obj)
3905 AC_SUBST(lang_opt_files)
3906 AC_SUBST(lang_specs_files)
3907 AC_SUBST(lang_tree_files)
3908 AC_SUBST(local_prefix)
3910 AC_SUBST(objc_boehm_gc)
3912 AC_SUBST(out_object_file)
3913 AC_SUBST(thread_file)
3914 AC_SUBST(tm_file_list)
3915 AC_SUBST(tm_include_list)
3916 AC_SUBST(tm_defines)
3917 AC_SUBST(tm_p_file_list)
3918 AC_SUBST(tm_p_include_list)
3919 AC_SUBST(xm_file_list)
3920 AC_SUBST(xm_include_list)
3921 AC_SUBST(xm_defines)
3922 AC_SUBST(use_gcc_stdint)
3923 AC_SUBST(c_target_objs)
3924 AC_SUBST(cxx_target_objs)
3925 AC_SUBST(fortran_target_objs)
3926 AC_SUBST(target_cpu_default)
3928 AC_SUBST_FILE(language_hooks)
3931 if test x${build} = x${host} ; then
3932 if test x${host} = x${target} ; then
3933 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3935 echo "Links are now set up to build a cross-compiler" 1>&2
3936 echo " from ${host} to ${target}." 1>&2
3939 if test x${host} = x${target} ; then
3940 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3941 echo " for ${target}." 1>&2
3943 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3944 echo " from ${host} to ${target}." 1>&2
3948 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3949 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3951 AC_ARG_VAR(PPLLIBS,[How to link PPL])
3952 AC_ARG_VAR(PPLINC,[How to find PPL include files])
3954 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
3955 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
3956 if test "x${CLOOGLIBS}" != "x" ; then
3957 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
3960 # Check for plugin support
3961 AC_ARG_ENABLE(plugin,
3962 [ --enable-plugin enable plugin support],
3963 enable_plugin=$enableval,
3964 enable_plugin=yes; default_plugin=yes)
3967 if test x"$enable_plugin" = x"yes"; then
3968 # Check that the host supports -rdynamic and -ldl
3971 saved_LDFLAGS="$LDFLAGS"
3976 LDFLAGS="$LDFLAGS -rdynamic"
3977 AC_MSG_CHECKING([for -rdynamic])
3978 AC_TRY_LINK([],[return 0;],
3979 [AC_MSG_RESULT([yes]); have_rdynamic=yes],
3980 [AC_MSG_RESULT([no])])
3981 if test x"$have_rdynamic" = x"yes" ; then
3982 pluginlibs="-rdynamic"
3986 LDFLAGS="$LDFLAGS -ldl"
3987 AC_MSG_CHECKING([for -ldl])
3989 [#include <dlfcn.h>],
3990 [volatile int f = 0; if (f) dlopen ("dummy", 0);],
3991 [AC_MSG_RESULT([yes]); have_dl=yes],
3992 [AC_MSG_RESULT([no])])
3993 if test x"$have_dl" = x"yes"; then
3994 pluginlibs="$pluginlibs -ldl"
3997 # Check that we can build shared objects with -fPIC -shared
3998 LDFLAGS="$LDFLAGS -fPIC -shared"
3999 AC_MSG_CHECKING([for -fPIC -shared])
4001 [extern int X;],[return X == 0;],
4002 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
4003 [AC_MSG_RESULT([no]); have_pic_shared=no])
4004 if test x"$have_pic_shared" != x"yes"; then
4009 # If plugin support had been requested but not available, fail.
4010 if test x"$enable_plugin" = x"no" ; then
4011 if test x"$default_plugin" != x"yes"; then
4013 Building GCC with plugin support requires a host that supports
4014 -fPIC, -shared, -ldl and -rdynamic.])
4018 LDFLAGS="$saved_LDFLAGS"
4022 AC_SUBST(pluginlibs)
4023 AC_SUBST(enable_plugin)
4024 if test x"$enable_plugin" = x"yes"; then
4025 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
4028 # Configure the subdirectories
4029 # AC_CONFIG_SUBDIRS($subdirs)
4031 # Create the Makefile
4032 # and configure language subdirectories
4033 AC_CONFIG_FILES($all_outputs)
4035 AC_CONFIG_COMMANDS([default],
4037 case ${CONFIG_HEADERS} in
4038 *auto-host.h:config.in*)
4041 # Make sure all the subdirs exist.
4042 for d in $subdirs doc build
4044 test -d $d || mkdir $d
4047 [subdirs='$subdirs'])