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 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)])
316 # ---------------------
317 # Warnings and checking
318 # ---------------------
320 # Check $CC warning features (if it's GCC).
321 # We want to use -pedantic, but we don't want warnings about
325 # So, we only use -pedantic if we can disable those warnings.
327 ACX_PROG_CC_WARNING_OPTS(
328 m4_quote(m4_do([-W -Wall -Wwrite-strings -Wstrict-prototypes ],
329 [-Wmissing-prototypes -Wcast-qual])), [loose_warn])
330 ACX_PROG_CC_WARNING_OPTS(
331 m4_quote(m4_do([-Wold-style-definition -Wc++-compat ],
332 [-Wmissing-format-attribute])), [strict_warn])
333 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
334 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
335 [-Wno-overlength-strings])), [strict_warn])
336 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
338 # The above macros do nothing if the compiler is not GCC. However, the
339 # Makefile has more goo to add other flags, so this variabl is used to
340 # enables warnings only for GCC.
342 if test "x$GCC" = "xyes"; then
343 warn_cflags='$(GCC_WARN_CFLAGS)'
345 AC_SUBST(warn_cflags)
347 # Enable expensive internal checks
349 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
353 AC_ARG_ENABLE(checking,
354 [ --enable-checking[=LIST]
355 enable expensive run-time checks. With LIST,
356 enable only specific categories of checks.
357 Categories are: yes,no,all,none,release.
358 Flags are: assert,df,fold,gc,gcac,gimple,misc,
359 rtlflag,rtl,runtime,tree,valgrind,types.],
360 [ac_checking_flags="${enableval}"],[
361 # Determine the default checks.
362 if test x$is_release = x ; then
363 ac_checking_flags=yes
365 ac_checking_flags=release
367 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
368 for check in release $ac_checking_flags
371 # these set all the flags to specific states
372 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
373 ac_fold_checking= ; ac_gc_checking=1 ;
374 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
375 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
376 ac_tree_checking=1 ; ac_valgrind_checking= ;
377 ac_types_checking=1 ;;
378 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
379 ac_fold_checking= ; ac_gc_checking= ;
380 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
381 ac_rtlflag_checking= ; ac_runtime_checking= ;
382 ac_tree_checking= ; ac_valgrind_checking= ;
383 ac_types_checking= ;;
384 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
385 ac_fold_checking=1 ; ac_gc_checking=1 ;
386 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
387 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
388 ac_tree_checking=1 ; ac_valgrind_checking= ;
389 ac_types_checking=1 ;;
390 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
391 ac_fold_checking= ; ac_gc_checking= ;
392 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
393 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
394 ac_tree_checking= ; ac_valgrind_checking= ;
395 ac_types_checking= ;;
396 # these enable particular checks
397 assert) ac_assert_checking=1 ;;
398 df) ac_df_checking=1 ;;
399 fold) ac_fold_checking=1 ;;
400 gc) ac_gc_checking=1 ;;
401 gcac) ac_gc_always_collect=1 ;;
402 gimple) ac_gimple_checking=1 ;;
403 misc) ac_checking=1 ;;
404 rtl) ac_rtl_checking=1 ;;
405 rtlflag) ac_rtlflag_checking=1 ;;
406 runtime) ac_runtime_checking=1 ;;
407 tree) ac_tree_checking=1 ;;
408 types) ac_types_checking=1 ;;
409 valgrind) ac_valgrind_checking=1 ;;
410 *) AC_MSG_ERROR(unknown check category $check) ;;
416 if test x$ac_checking != x ; then
417 AC_DEFINE(ENABLE_CHECKING, 1,
418 [Define if you want more run-time sanity checks. This one gets a grab
419 bag of miscellaneous but relatively cheap checks.])
420 nocommon_flag=-fno-common
422 AC_SUBST(nocommon_flag)
423 if test x$ac_df_checking != x ; then
424 AC_DEFINE(ENABLE_DF_CHECKING, 1,
425 [Define if you want more run-time sanity checks for dataflow.])
427 if test x$ac_assert_checking != x ; then
428 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
429 [Define if you want assertions enabled. This is a cheap check.])
431 if test x$ac_gimple_checking != x ; then
432 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
433 [Define if you want operations on GIMPLE (the basic data structure of
434 the high-level optimizers) to be checked for dynamic type safety at
435 runtime. This is moderately expensive.])
437 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
438 if test x$ac_runtime_checking != x ; then
439 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
440 [Define if you want runtime assertions enabled. This is a cheap check.])
442 if test x$ac_tree_checking != x ; then
443 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
444 [Define if you want all operations on trees (the basic data
445 structure of the front ends) to be checked for dynamic type safety
446 at runtime. This is moderately expensive. The tree browser debugging
447 routines will also be enabled by this option.
449 TREEBROWSER=tree-browser.o
451 if test x$ac_types_checking != x ; then
452 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
453 [Define if you want all gimple types to be verified after gimplifiation.
457 AC_SUBST(TREEBROWSER)
458 if test x$ac_rtl_checking != x ; then
459 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
460 [Define if you want all operations on RTL (the basic data structure
461 of the optimizer and back end) to be checked for dynamic type safety
462 at runtime. This is quite expensive.])
464 if test x$ac_rtlflag_checking != x ; then
465 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
466 [Define if you want RTL flag accesses to be checked against the RTL
467 codes that are supported for each access macro. This is relatively
470 if test x$ac_gc_checking != x ; then
471 AC_DEFINE(ENABLE_GC_CHECKING, 1,
472 [Define if you want the garbage collector to do object poisoning and
473 other memory allocation checks. This is quite expensive.])
475 if test x$ac_gc_always_collect != x ; then
476 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
477 [Define if you want the garbage collector to operate in maximally
478 paranoid mode, validating the entire heap and collecting garbage at
479 every opportunity. This is extremely expensive.])
481 if test x$ac_fold_checking != x ; then
482 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
483 [Define if you want fold checked that it never destructs its argument.
484 This is quite expensive.])
486 valgrind_path_defines=
489 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
490 dnl # an if statement. This was the source of very frustrating bugs
491 dnl # in converting to autoconf 2.5x!
492 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
494 if test x$ac_valgrind_checking != x ; then
495 # It is certainly possible that there's valgrind but no valgrind.h.
496 # GCC relies on making annotations so we must have both.
497 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
498 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
499 [[#include <valgrind/memcheck.h>
500 #ifndef VALGRIND_DISCARD
501 #error VALGRIND_DISCARD not defined
503 [gcc_cv_header_valgrind_memcheck_h=yes],
504 [gcc_cv_header_valgrind_memcheck_h=no])
505 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
506 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
507 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
508 [[#include <memcheck.h>
509 #ifndef VALGRIND_DISCARD
510 #error VALGRIND_DISCARD not defined
512 [gcc_cv_header_memcheck_h=yes],
513 [gcc_cv_header_memcheck_h=no])
514 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
515 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
516 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
517 if test "x$valgrind_path" = "x" \
518 || (test $have_valgrind_h = no \
519 && test $gcc_cv_header_memcheck_h = no \
520 && test $gcc_cv_header_valgrind_memcheck_h = no); then
521 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
523 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
524 valgrind_command="$valgrind_path -q"
525 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
526 [Define if you want to run subprograms and generated programs
527 through valgrind (a memory checker). This is extremely expensive.])
528 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
529 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
530 [Define if valgrind's valgrind/memcheck.h header is installed.])
532 if test $gcc_cv_header_memcheck_h = yes; then
533 AC_DEFINE(HAVE_MEMCHECK_H, 1,
534 [Define if valgrind's memcheck.h header is installed.])
537 AC_SUBST(valgrind_path_defines)
538 AC_SUBST(valgrind_command)
540 # Enable code coverage collection
541 AC_ARG_ENABLE(coverage,
542 [ --enable-coverage[=LEVEL]
543 enable compiler's code coverage collection.
544 Use to measure compiler performance and locate
545 unused parts of the compiler. With LEVEL, specify
546 optimization. Values are opt, noopt,
548 [case "${enableval}" in
550 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
553 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
556 # a.k.a. --disable-coverage
560 AC_MSG_ERROR(unknown coverage setting $enableval)
564 AC_SUBST(coverage_flags)
566 AC_ARG_ENABLE(gather-detailed-mem-stats,
567 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
568 [enable_gather_detailed_mem_stats=no])
569 if test x$enable_gather_detailed_mem_stats = xyes ; then
570 AC_DEFINE(GATHER_STATISTICS, 1,
571 [Define to enable detailed memory allocation stats gathering.])
574 # -------------------------------
575 # Miscenalleous configure options
576 # -------------------------------
580 [ --with-stabs arrange to use stabs instead of host debug format],
584 # Determine whether or not multilibs are enabled.
585 AC_ARG_ENABLE(multilib,
586 [ --enable-multilib enable library support for multiple ABIs],
587 [], [enable_multilib=yes])
588 AC_SUBST(enable_multilib)
590 # Enable __cxa_atexit for C++.
591 AC_ARG_ENABLE(__cxa_atexit,
592 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
595 # Enable C extension for decimal float if target supports it.
596 AC_ARG_ENABLE(decimal-float,
597 [ --enable-decimal-float={no,yes,bid,dpd}
598 enable decimal float extension to C. Selecting 'bid'
599 or 'dpd' choses which decimal floating point format
602 case $enable_decimal_float in
603 yes | no | bid | dpd) ;;
604 *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
605 Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
610 powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
611 enable_decimal_float=yes
614 AC_MSG_WARN(decimal float is not supported for this target, ignored)
615 enable_decimal_float=no
620 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
621 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
622 [Define to 1 to enable decimal float extension to C.])
624 # x86's use BID format instead of DPD
625 case x$enable_decimal_float in
628 i?86*-*-linux* | x86_64*-*-linux*)
629 enable_decimal_float=bid
632 enable_decimal_float=dpd
637 # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
638 # dependency on libdecnumber.
639 enable_decimal_float=dpd
642 AC_SUBST(enable_decimal_float)
644 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
645 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
646 [Define to 1 to specify that we are using the BID decimal floating
647 point format instead of DPD])
649 # Enable C extension for fixed-point arithmetic.
650 AC_ARG_ENABLE(fixed-point,
651 [ --enable-fixed-point enable fixed-point arithmetic extension to C],
659 AC_MSG_WARN(fixed-point is not supported on IRIX, ignored)
660 enable_fixed_point=no
663 enable_fixed_point=yes
668 AC_MSG_WARN(fixed-point is not supported for this target, ignored)
669 enable_fixed_point=no
673 AC_SUBST(enable_fixed_point)
675 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
676 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
677 [Define to 1 to enable fixed-point arithmetic extension to C.])
680 # Pass with no value to take the default
681 # Pass with a value to specify a thread package
682 AC_ARG_ENABLE(threads,
683 [ --enable-threads enable thread usage for target GCC
684 --enable-threads=LIB use LIB thread package for target GCC],,
688 [ --enable-tls enable or disable generation of tls code
689 overriding the assembler check for tls support],
693 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
694 Valid choices are 'yes' and 'no'.]) ;;
698 AC_ARG_ENABLE(objc-gc,
699 [ --enable-objc-gc enable the use of Boehm's garbage collector with
700 the GNU Objective-C runtime],
701 if test x$enable_objc_gc = xno; then
709 [ --with-dwarf2 force the default debug format to be DWARF 2],
710 dwarf2="$with_dwarf2",
713 AC_ARG_ENABLE(shared,
714 [ --disable-shared don't provide a shared libgcc],
716 case $enable_shared in
720 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
721 for pkg in $enableval; do
722 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
729 ], [enable_shared=yes])
730 AC_SUBST(enable_shared)
732 AC_ARG_WITH(build-sysroot,
733 [ --with-build-sysroot=sysroot
734 use sysroot as the system root during the build])
737 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
739 case ${with_sysroot} in
740 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
741 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
744 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
745 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
747 if test "x$prefix" = xNONE; then
748 test_prefix=/usr/local
752 if test "x$exec_prefix" = xNONE; then
753 test_exec_prefix=$test_prefix
755 test_exec_prefix=$exec_prefix
757 case ${TARGET_SYSTEM_ROOT} in
758 "${test_prefix}"|"${test_prefix}/"*|\
759 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
760 '${prefix}'|'${prefix}/'*|\
761 '${exec_prefix}'|'${exec_prefix}/'*)
762 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
763 TARGET_SYSTEM_ROOT_DEFINE="$t"
768 TARGET_SYSTEM_ROOT_DEFINE=
769 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
771 AC_SUBST(TARGET_SYSTEM_ROOT)
772 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
773 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
775 # Build with intermodule optimisations
776 AC_ARG_ENABLE(intermodule,
777 [ --enable-intermodule build the compiler in one step],
778 [case ${enable_intermodule} in
779 yes) onestep="-onestep";;
785 ACX_PKGVERSION([GCC])
786 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
788 # Sanity check enable_languages in case someone does not run the toplevel
789 # configure # script.
790 AC_ARG_ENABLE(languages,
791 [ --enable-languages=LIST specify which front-ends to build],
792 [case ,${enable_languages}, in
794 # go safe -- we cannot be much sure without the toplevel
796 # analysis of which target libs are present and usable
800 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
805 enable_languages=c,${enable_languages}
808 [enable_languages=c])
810 # Used by documentation targets
811 AC_SUBST(datarootdir)
815 # -------------------------
816 # Checks for other programs
817 # -------------------------
821 # Find some useful tools
823 # We need awk to create options.c and options.h.
824 # Bail out if it's missing.
826 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
834 # By default, the Darwin ranlib will not treat common symbols as
835 # definitions when building the archive table of contents. Other
836 # ranlibs do that; pass an option to the Darwin ranlib that makes
837 # it behave similarly.
843 AC_SUBST(ranlib_flags)
847 # See if cmp has --ignore-initial.
848 gcc_AC_PROG_CMP_IGNORE_INITIAL
850 # See if we have the mktemp command.
851 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
853 # See if makeinfo has been installed and is modern enough
854 # that we can use it.
855 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
856 [GNU texinfo.* \([0-9][0-9.]*\)],
857 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
858 if test $gcc_cv_prog_makeinfo_modern = no; then
860 *** Makeinfo is missing or too old.
861 *** Info documentation will not be built.])
868 # Is pod2man recent enough to regenerate manpages?
869 AC_MSG_CHECKING([for recent Pod::Man])
870 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
872 GENERATED_MANPAGES=generated-manpages
877 AC_SUBST(GENERATED_MANPAGES)
879 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
882 dnl Don't use AC_PROG_LEX; we insist on flex.
883 dnl LEXLIB is not useful in gcc.
884 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
887 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
889 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
890 # check for build == host before using them.
893 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
894 && test -d ../binutils ; then
895 NM='$(objdir)/../binutils/nm-new'
897 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
901 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
902 && test -d ../binutils ; then
903 AR='$(objdir)/../binutils/ar'
905 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
909 # --------------------
910 # Checks for C headers
911 # --------------------
913 # Need to reject headers which give warnings, so that the -Werror bootstrap
914 # works later. *sigh* This needs to come before all header checks.
921 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
922 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
923 sys/resource.h sys/param.h sys/times.h sys/stat.h \
924 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
926 # Check for thread headers.
927 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
928 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
930 # These tests can't be done till we know if we have limits.h.
939 # These libraries may be used by collect2.
940 # We may need a special search path to get them linked.
941 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
943 for libs in '' -lld -lmld \
944 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
945 '-L/usr/lib/cmplrs/cc3.11 -lmld'
948 AC_TRY_LINK_FUNC(ldopen,
949 [gcc_cv_collect2_libs="$libs"; break])
952 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
953 case $gcc_cv_collect2_libs in
955 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
957 AC_SUBST(COLLECT2_LIBS)
959 # When building Ada code on Alpha, we need exc_resume which is usually in
960 # -lexc. So test for it.
963 AC_SEARCH_LIBS(exc_resume, exc)
966 AC_SUBST(GNAT_LIBEXC)
968 # Some systems put ldexp and frexp in libm instead of libc; assume
969 # they're both in the same place. jcf-dump needs them.
972 AC_SEARCH_LIBS(ldexp, m)
977 # Use <inttypes.h> only if it exists,
978 # doesn't clash with <sys/types.h>, and declares intmax_t.
979 AC_MSG_CHECKING(for inttypes.h)
980 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
981 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
982 [[#include <sys/types.h>
983 #include <inttypes.h>]],
984 [[intmax_t i = -1;]])],
985 [gcc_cv_header_inttypes_h=yes],
986 [gcc_cv_header_inttypes_h=no])])
987 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
988 if test $gcc_cv_header_inttypes_h = yes; then
989 AC_DEFINE(HAVE_INTTYPES_H, 1,
990 [Define if you have a working <inttypes.h> header file.])
993 dnl Disabled until we have a complete test for buggy enum bitfields.
994 dnl gcc_AC_C_ENUM_BF_UNSIGNED
996 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
997 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
998 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
999 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1000 putchar_unlocked putc_unlocked)
1001 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1002 sysconf strsignal getrusage nl_langinfo \
1003 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1006 if test x$ac_cv_func_mbstowcs = xyes; then
1007 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1008 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1014 [gcc_cv_func_mbstowcs_works=yes],
1015 [gcc_cv_func_mbstowcs_works=no],
1016 [gcc_cv_func_mbstowcs_works=yes])])
1017 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1018 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1019 [Define this macro if mbstowcs does not crash when its
1020 first argument is NULL.])
1024 AC_CHECK_TYPE(ssize_t, int)
1025 AC_CHECK_TYPE(caddr_t, char *)
1027 # Try to determine the array type of the second argument of getgroups
1028 # for the target system (int or gid_t).
1030 if test "${target}" = "${build}"; then
1031 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1034 # This condition may need some tweaking. It should include all
1035 # targets where the array type of the second argument of getgroups
1036 # is int and the type of gid_t is not equivalent to int.
1037 *-*-sunos* | *-*-ultrix*)
1038 TARGET_GETGROUPS_T=int
1041 TARGET_GETGROUPS_T=gid_t
1045 AC_SUBST(TARGET_GETGROUPS_T)
1047 gcc_AC_FUNC_MMAP_BLACKLIST
1051 # Under VMS, vfork works very differently than on Unix. The standard test
1052 # won't work, and it isn't easily adaptable. It makes more sense to
1054 ac_cv_func_vfork_works=yes
1060 # Until we have in-tree GNU iconv:
1062 AC_SUBST(LIBICONV_DEP)
1068 # We will need to find libiberty.h and ansidecl.h
1069 saved_CFLAGS="$CFLAGS"
1070 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1071 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1072 strsignal strstr strverscmp \
1073 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1074 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1075 #include "ansidecl.h"
1076 #include "system.h"])
1078 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1079 #include "ansidecl.h"
1081 #ifdef HAVE_SYS_RESOURCE_H
1082 #include <sys/resource.h>
1086 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1087 #include "ansidecl.h"
1089 #ifdef HAVE_SYS_RESOURCE_H
1090 #include <sys/resource.h>
1092 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1093 [Define to `long' if <sys/resource.h> doesn't define.])])
1095 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1096 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1097 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1098 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1099 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1100 #include "ansidecl.h"
1109 gcc_AC_CHECK_DECLS(times, , ,[
1110 #include "ansidecl.h"
1112 #ifdef HAVE_SYS_TIMES_H
1113 #include <sys/times.h>
1117 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1118 #include "ansidecl.h"
1123 # More time-related stuff.
1124 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1125 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1126 #include "ansidecl.h"
1128 #ifdef HAVE_SYS_TIMES_H
1129 #include <sys/times.h>
1131 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1132 if test $ac_cv_struct_tms = yes; then
1133 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1134 [Define if <sys/times.h> defines struct tms.])
1137 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1138 # revisit after autoconf 2.50.
1139 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1140 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1141 #include "ansidecl.h"
1143 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1144 if test $gcc_cv_type_clock_t = yes; then
1145 AC_DEFINE(HAVE_CLOCK_T, 1,
1146 [Define if <time.h> defines clock_t.])
1149 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1150 CFLAGS="$saved_CFLAGS"
1152 gcc_AC_INITFINI_ARRAY
1154 # mkdir takes a single argument on some systems.
1155 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1163 # With Setjmp/Longjmp based exception handling.
1164 AC_ARG_ENABLE(sjlj-exceptions,
1165 [ --enable-sjlj-exceptions
1166 arrange to use setjmp/longjmp exception handling],
1169 if test $enableval != yes; then
1170 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1175 force_sjlj_exceptions=yes],
1178 force_sjlj_exceptions=yes
1182 force_sjlj_exceptions=no
1185 if test $force_sjlj_exceptions = yes; then
1186 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1187 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1188 [Define 0/1 to force the choice for exception handling model.])
1191 # For platforms with the unwind ABI which includes an unwind library,
1192 # libunwind, we can choose to use the system libunwind.
1193 # config.gcc also contains tests of with_system_libunwind.
1194 GCC_CHECK_UNWIND_GETIPINFO
1196 # --------------------------------------------------------
1197 # Build, host, and target specific configuration fragments
1198 # --------------------------------------------------------
1200 # Collect build-machine-specific information.
1201 . ${srcdir}/config.build
1203 # Collect host-machine-specific information.
1204 . ${srcdir}/config.host
1208 # Collect target-machine-specific information.
1209 . ${srcdir}/config.gcc
1211 extra_objs="${host_extra_objs} ${extra_objs}"
1212 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1214 # Default the target-machine variables that were not explicitly set.
1215 if test x"$tm_file" = x
1216 then tm_file=$cpu_type/$cpu_type.h; fi
1218 if test x"$extra_headers" = x
1219 then extra_headers=; fi
1221 if test x$md_file = x
1222 then md_file=$cpu_type/$cpu_type.md; fi
1224 if test x$out_file = x
1225 then out_file=$cpu_type/$cpu_type.c; fi
1227 if test x"$tmake_file" = x
1228 then tmake_file=$cpu_type/t-$cpu_type
1231 if test x"$dwarf2" = xyes
1232 then tm_file="$tm_file tm-dwarf2.h"
1235 # Say what files are being used for the output code and MD file.
1236 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1237 echo "Using \`$srcdir/config/$md_file' as machine description file."
1239 # If any of the xm_file variables contain nonexistent files, warn
1240 # about them and drop them.
1243 for x in $build_xm_file; do
1244 if test -f $srcdir/config/$x
1246 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1252 for x in $host_xm_file; do
1253 if test -f $srcdir/config/$x
1255 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1261 for x in $xm_file; do
1262 if test -f $srcdir/config/$x
1264 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1270 for f in $tm_file; do
1273 if test $count = ax; then
1274 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1276 echo "Using the following target machine macro files:"
1277 for f in $tm_file; do
1278 echo " $srcdir/config/$f"
1282 if test x$need_64bit_hwint = xyes; then
1283 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1284 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1287 if test x$use_long_long_for_widest_fast_int = xyes; then
1288 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1289 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1290 efficiently supported by the host hardware.])
1294 for f in $host_xm_file; do
1297 if test $count = a; then
1299 elif test $count = ax; then
1300 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1302 echo "Using the following host machine macro files:"
1303 for f in $host_xm_file; do
1304 echo " $srcdir/config/$f"
1307 echo "Using ${out_host_hook_obj} for host machine hooks."
1309 if test "$host_xm_file" != "$build_xm_file"; then
1311 for f in $build_xm_file; do
1314 if test $count = a; then
1316 elif test $count = ax; then
1317 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1319 echo "Using the following build machine macro files:"
1320 for f in $build_xm_file; do
1321 echo " $srcdir/config/$f"
1328 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1329 gcc_cv_mcontext_underscores,
1331 #include <sys/cdefs.h>
1332 #include <sys/signal.h>
1333 #include <ucontext.h>
1334 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1336 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1337 if test $gcc_cv_mcontext_underscores = yes; then
1338 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1339 [mcontext_t fields start with __])
1348 # Check if a valid thread package
1349 case ${enable_threads} in
1352 target_thread_file='single'
1356 target_thread_file='single'
1358 aix | dce | gnat | irix | posix | posix95 | rtems | \
1359 single | solaris | vxworks | win32 | mipssde)
1360 target_thread_file=${enable_threads}
1363 echo "${enable_threads} is an unknown thread package" 1>&2
1368 if test x${thread_file} = x; then
1369 # No thread file set by target-specific clauses in config.gcc,
1370 # so use file chosen by default logic above
1371 thread_file=${target_thread_file}
1374 # Make gthr-default.h if we have a thread file.
1376 if test $thread_file != single; then
1377 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1378 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1379 rm -f gthr-default.h-t
1381 mv -f gthr-default.h-t gthr-default.h
1383 gthread_flags=-DHAVE_GTHR_DEFAULT
1385 AC_SUBST(gthread_flags)
1392 if test x$enable___cxa_atexit = xyes || \
1393 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1394 if test x$host = x$target; then
1396 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1397 # keyed to flag_use_cxa_atexit
1402 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1403 [echo "__cxa_atexit can't be enabled on this target"])
1407 # We can't check for __cxa_atexit when building a cross, so assume
1411 if test x$use_cxa_atexit = xyes; then
1412 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1413 [Define if you want to use __cxa_atexit, rather than atexit, to
1414 register C++ destructors for local statics and global objects.
1415 This is essential for fully standards-compliant handling of
1416 destructors, but requires __cxa_atexit in libc.])
1420 # Look for a file containing extra machine modes.
1421 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1422 extra_modes_file='$(srcdir)'/config/${extra_modes}
1423 AC_SUBST(extra_modes_file)
1424 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1425 [Define to the name of a file containing a list of extra machine modes
1426 for this architecture.])
1429 # Convert extra_options into a form suitable for Makefile use.
1431 for f in $extra_options; do
1432 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1434 AC_SUBST(extra_opt_files)
1436 # auto-host.h is the file containing items generated by autoconf and is
1437 # the first file included by config.h.
1438 # If host=build, it is correct to have bconfig include auto-host.h
1439 # as well. If host!=build, we are in error and need to do more
1440 # work to find out the build config parameters.
1441 if test x$host = x$build
1443 build_auto=auto-host.h
1445 # We create a subdir, then run autoconf in the subdir.
1446 # To prevent recursion we set host and build for the new
1447 # invocation of configure to the build for this invocation
1454 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1455 *) realsrcdir=../${srcdir};;
1457 saved_CFLAGS="${CFLAGS}"
1458 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1459 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1460 ${realsrcdir}/configure \
1461 --enable-languages=${enable_languages-all} \
1462 --target=$target_alias --host=$build_alias --build=$build_alias
1463 CFLAGS="${saved_CFLAGS}"
1465 # We just finished tests for the build machine, so rename
1466 # the file auto-build.h in the gcc directory.
1467 mv auto-host.h ../auto-build.h
1470 build_auto=auto-build.h
1472 AC_SUBST(build_subdir)
1474 tm_file="${tm_file} defaults.h"
1475 tm_p_file="${tm_p_file} tm-preds.h"
1476 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1477 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1478 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1479 # put this back in temporarily.
1480 xm_file="auto-host.h ansidecl.h ${xm_file}"
1487 # Compile in configure arguments.
1488 if test -f configargs.h ; then
1489 # Being re-configured.
1490 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1491 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1493 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1496 # Double all backslashes and backslash all quotes to turn
1497 # gcc_config_arguments into a C string.
1498 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1499 $gcc_config_arguments
1501 gcc_config_arguments_str=`cat conftest.out`
1504 cat > configargs.h <<EOF
1505 /* Generated automatically. */
1506 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1507 static const char thread_model[] = "$thread_file";
1509 static const struct {
1510 const char *name, *value;
1511 } configure_default_options[] = $configure_default_options;
1515 # Internationalization
1516 ZW_GNU_GETTEXT_SISTER_DIR
1518 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1519 # -liconv on the link line twice.
1520 case "$LIBINTL" in *$LIBICONV*)
1524 AC_ARG_ENABLE(secureplt,
1525 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1529 [ --enable-cld enable -mcld by default for 32bit x86], [],
1532 # Windows32 Registry support for specifying GCC installation paths.
1533 AC_ARG_ENABLE(win32-registry,
1534 [ --disable-win32-registry
1535 disable lookup of installation paths in the
1536 Registry on Windows hosts
1537 --enable-win32-registry enable registry lookup (default)
1538 --enable-win32-registry=KEY
1539 use KEY instead of GCC version as the last portion
1540 of the registry key],,)
1543 win32 | pe | cygwin* | mingw32* | uwin*)
1544 if test "x$enable_win32_registry" != xno; then
1545 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1548 if test "x$enable_win32_registry" != xno; then
1549 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1550 [Define to 1 if installation paths should be looked up in the Windows
1551 Registry. Ignored on non-Windows hosts.])
1553 if test "x$enable_win32_registry" != xyes \
1554 && test "x$enable_win32_registry" != x; then
1555 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1556 [Define to be the last component of the Windows registry key under which
1557 to look for installation paths. The full key used will be
1558 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1559 The default is the GCC version number.])
1565 # Get an absolute path to the GCC top-level source directory
1566 holddir=`${PWDCMD-pwd}`
1568 topdir=`${PWDCMD-pwd}`
1571 # Conditionalize the makefile for this host machine.
1573 for f in ${host_xmake_file}
1575 if test -f ${srcdir}/config/$f
1577 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1581 # Conditionalize the makefile for this target machine.
1583 for f in ${tmake_file}
1585 if test -f ${srcdir}/config/$f
1587 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1590 tmake_file="${tmake_file_}"
1592 out_object_file=`basename $out_file .c`.o
1594 tm_file_list="options.h"
1595 tm_include_list="options.h"
1596 for f in $tm_file; do
1599 f=`echo $f | sed 's/^..//'`
1600 tm_file_list="${tm_file_list} $f"
1601 tm_include_list="${tm_include_list} $f"
1604 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1605 tm_include_list="${tm_include_list} $f"
1608 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1609 tm_include_list="${tm_include_list} config/$f"
1616 for f in $tm_p_file; do
1619 tm_p_file_list="${tm_p_file_list} $f"
1620 tm_p_include_list="${tm_p_include_list} $f"
1623 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1624 tm_p_include_list="${tm_p_include_list} config/$f"
1630 for f in $xm_file; do
1633 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1634 xm_include_list="${xm_include_list} $f"
1637 xm_file_list="${xm_file_list} $f"
1638 xm_include_list="${xm_include_list} $f"
1641 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1642 xm_include_list="${xm_include_list} config/$f"
1648 host_xm_include_list=
1649 for f in $host_xm_file; do
1652 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1653 host_xm_include_list="${host_xm_include_list} $f"
1656 host_xm_file_list="${host_xm_file_list} $f"
1657 host_xm_include_list="${host_xm_include_list} $f"
1660 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1661 host_xm_include_list="${host_xm_include_list} config/$f"
1667 for f in $build_xm_file; do
1670 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1671 build_xm_include_list="${build_xm_include_list} $f"
1673 auto-build.h | auto-host.h )
1674 build_xm_file_list="${build_xm_file_list} $f"
1675 build_xm_include_list="${build_xm_include_list} $f"
1678 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1679 build_xm_include_list="${build_xm_include_list} config/$f"
1684 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1685 # cross-compiler which does not use the native headers and libraries.
1686 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1687 CROSS= AC_SUBST(CROSS)
1688 ALL=all.internal AC_SUBST(ALL)
1689 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1691 if test "x$with_build_sysroot" != x; then
1692 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1694 # This value is used, even on a native system, because
1695 # CROSS_SYSTEM_HEADER_DIR is just
1696 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1697 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1700 if test x$host != x$target
1702 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1704 SYSTEM_HEADER_DIR=$build_system_header_dir
1705 case "$host","$target" in
1706 # Darwin crosses can use the host system's libraries and headers,
1707 # because of the fat library support. Of course, it must be the
1708 # same version of Darwin on both sides. Allow the user to
1709 # just say --target=foo-darwin without a version number to mean
1710 # "the version on this system".
1711 *-*-darwin*,*-*-darwin*)
1712 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1713 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1714 if test $hostos = $targetos -o $targetos = darwin ; then
1716 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1721 i?86-*-*,x86_64-*-* \
1722 | powerpc*-*-*,powerpc64*-*-*)
1723 CROSS="$CROSS -DNATIVE_CROSS" ;;
1725 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1726 SYSTEM_HEADER_DIR=$build_system_header_dir
1729 # If this is a cross-compiler that does not
1730 # have its own set of headers then define
1733 # If this is using newlib, without having the headers available now,
1734 # then define inhibit_libc in LIBGCC2_CFLAGS.
1735 # This prevents libgcc2 from containing any code which requires libc
1737 : ${inhibit_libc=false}
1738 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1739 test x$with_newlib = xyes ; } &&
1740 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1743 AC_SUBST(inhibit_libc)
1745 # When building gcc with a cross-compiler, we need to adjust things so
1746 # that the generator programs are still built with the native compiler.
1747 # Also, we cannot run fixincludes or fix-header.
1749 # These are the normal (build=host) settings:
1750 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1751 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1752 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1753 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1755 # Possibly disable fixproto, on a per-target basis.
1756 case ${use_fixproto} in
1761 STMP_FIXPROTO=stmp-fixproto
1764 AC_SUBST(STMP_FIXPROTO)
1766 # And these apply if build != host, or we are generating coverage data
1767 if test x$build != x$host || test "x$coverage_flags" != x
1769 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1770 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1772 if test "x$TARGET_SYSTEM_ROOT" = x; then
1773 if test "x$STMP_FIXPROTO" != x; then
1774 STMP_FIXPROTO=stmp-install-fixproto
1779 # Expand extra_headers to include complete path.
1780 # This substitutes for lots of t-* files.
1782 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1783 for file in ${extra_headers} ; do
1784 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1787 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1788 if test x"$use_gcc_tgmath" = xyes
1789 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1792 # Define collect2 in Makefile.
1793 case $host_can_use_collect2 in
1795 *) collect2='collect2$(exeext)' ;;
1797 AC_SUBST([collect2])
1799 # Add a definition of USE_COLLECT2 if system wants one.
1800 case $use_collect2 in
1801 no) use_collect2= ;;
1804 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1805 xm_defines="${xm_defines} USE_COLLECT2"
1806 case $host_can_use_collect2 in
1808 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1814 # ---------------------------
1815 # Assembler & linker features
1816 # ---------------------------
1818 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1819 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1820 # However when ld-new is first executed from the build tree, libtool will
1821 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1822 # to the build tree. While doing this we need to use the previous-stage
1823 # linker, or we have an infinite loop. The presence of a shell script as
1824 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1825 # the gcc/collect-ld script. So we need to know how libtool works, or
1826 # exec-tool will fail.
1828 m4_defun([_LT_CONFIG_COMMANDS], [])
1831 AC_SUBST(enable_fast_install)
1833 # Identify the assembler which will work hand-in-glove with the newly
1834 # built GCC, so that we can examine its features. This is the assembler
1835 # which will be driven by the driver program.
1837 # If build != host, and we aren't building gas in-tree, we identify a
1838 # build->target assembler and hope that it will have the same features
1839 # as the host->target assembler we'll be using.
1840 gcc_cv_gas_major_version=
1841 gcc_cv_gas_minor_version=
1842 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1844 m4_pattern_allow([AS_FOR_TARGET])dnl
1845 AS_VAR_SET_IF(gcc_cv_as,, [
1846 if test -x "$DEFAULT_ASSEMBLER"; then
1847 gcc_cv_as="$DEFAULT_ASSEMBLER"
1848 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1849 && test -f ../gas/Makefile \
1850 && test x$build = x$host; then
1851 gcc_cv_as=../gas/as-new$build_exeext
1852 elif test -x as$build_exeext; then
1853 # Build using assembler in the current directory.
1854 gcc_cv_as=./as$build_exeext
1855 elif test -x $AS_FOR_TARGET; then
1856 gcc_cv_as="$AS_FOR_TARGET"
1858 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1861 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1862 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1863 case "$ORIGINAL_AS_FOR_TARGET" in
1864 ./as | ./as$build_exeext) ;;
1865 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1868 AC_MSG_CHECKING(what assembler to use)
1869 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1870 # Single tree build which includes gas. We want to prefer it
1871 # over whatever linker top-level may have detected, since
1872 # we'll use what we're building after installation anyway.
1873 AC_MSG_RESULT(newly built gas)
1875 _gcc_COMPUTE_GAS_VERSION
1876 in_tree_gas_is_elf=no
1877 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1878 || (grep 'obj_format = multi' ../gas/Makefile \
1879 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1881 in_tree_gas_is_elf=yes
1884 AC_MSG_RESULT($gcc_cv_as)
1888 # Identify the linker which will work hand-in-glove with the newly
1889 # built GCC, so that we can examine its features. This is the linker
1890 # which will be driven by the driver program.
1892 # If build != host, and we aren't building gas in-tree, we identify a
1893 # build->target linker and hope that it will have the same features
1894 # as the host->target linker we'll be using.
1895 gcc_cv_gld_major_version=
1896 gcc_cv_gld_minor_version=
1897 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1898 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1900 AS_VAR_SET_IF(gcc_cv_ld,, [
1901 if test -x "$DEFAULT_LINKER"; then
1902 gcc_cv_ld="$DEFAULT_LINKER"
1903 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1904 && test -f ../ld/Makefile \
1905 && test x$build = x$host; then
1906 gcc_cv_ld=../ld/ld-new$build_exeext
1907 elif test -x collect-ld$build_exeext; then
1908 # Build using linker in the current directory.
1909 gcc_cv_ld=./collect-ld$build_exeext
1910 elif test -x $LD_FOR_TARGET; then
1911 gcc_cv_ld="$LD_FOR_TARGET"
1913 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1916 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1917 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1918 case "$ORIGINAL_LD_FOR_TARGET" in
1919 ./collect-ld | ./collect-ld$build_exeext) ;;
1920 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1923 AC_MSG_CHECKING(what linker to use)
1924 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1925 # Single tree build which includes ld. We want to prefer it
1926 # over whatever linker top-level may have detected, since
1927 # we'll use what we're building after installation anyway.
1928 AC_MSG_RESULT(newly built ld)
1930 in_tree_ld_is_elf=no
1931 if (grep 'EMUL = .*elf' ../ld/Makefile \
1932 || grep 'EMUL = .*linux' ../ld/Makefile \
1933 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1934 in_tree_ld_is_elf=yes
1936 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
1939 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1940 if test x$gcc_cv_gld_version != x; then
1944 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1945 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1948 AC_MSG_RESULT($gcc_cv_ld)
1952 # Figure out what nm we will be using.
1953 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1954 AS_VAR_SET_IF(gcc_cv_nm,, [
1955 if test -f $gcc_cv_binutils_srcdir/configure.in \
1956 && test -f ../binutils/Makefile \
1957 && test x$build = x$host; then
1958 gcc_cv_nm=../binutils/nm-new$build_exeext
1959 elif test -x nm$build_exeext; then
1960 gcc_cv_nm=./nm$build_exeext
1961 elif test -x $NM_FOR_TARGET; then
1962 gcc_cv_nm="$NM_FOR_TARGET"
1964 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1967 AC_MSG_CHECKING(what nm to use)
1968 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1969 # Single tree build which includes binutils.
1970 AC_MSG_RESULT(newly built nm)
1973 AC_MSG_RESULT($gcc_cv_nm)
1977 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1978 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1979 case "$ORIGINAL_NM_FOR_TARGET" in
1980 ./nm | ./nm$build_exeext) ;;
1981 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
1985 # Figure out what objdump we will be using.
1986 AS_VAR_SET_IF(gcc_cv_objdump,, [
1987 if test -f $gcc_cv_binutils_srcdir/configure.in \
1988 && test -f ../binutils/Makefile \
1989 && test x$build = x$host; then
1990 # Single tree build which includes binutils.
1991 gcc_cv_objdump=../binutils/objdump$build_exeext
1992 elif test -x objdump$build_exeext; then
1993 gcc_cv_objdump=./objdump$build_exeext
1994 elif test -x $OBJDUMP_FOR_TARGET; then
1995 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
1997 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2000 AC_MSG_CHECKING(what objdump to use)
2001 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2002 # Single tree build which includes binutils.
2003 AC_MSG_RESULT(newly built objdump)
2004 elif test x$gcc_cv_objdump = x; then
2005 AC_MSG_RESULT(not found)
2007 AC_MSG_RESULT($gcc_cv_objdump)
2010 # Figure out what readelf we will be using.
2011 AS_VAR_SET_IF(gcc_cv_readelf,, [
2012 if test -f $gcc_cv_binutils_srcdir/configure.in \
2013 && test -f ../binutils/Makefile \
2014 && test x$build = x$host; then
2015 # Single tree build which includes binutils.
2016 gcc_cv_readelf=../binutils/readelf$build_exeext
2017 elif test -x readelf$build_exeext; then
2018 gcc_cv_readelf=./readelf$build_exeext
2020 AC_PATH_PROG(gcc_cv_readelf, readelf)
2023 AC_MSG_CHECKING(what readelf to use)
2024 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2025 # Single tree build which includes binutils.
2026 AC_MSG_RESULT(newly built readelf)
2027 elif test x$gcc_cv_readelf = x; then
2028 AC_MSG_RESULT(not found)
2030 AC_MSG_RESULT($gcc_cv_readelf)
2033 # Figure out what assembler alignment features are present.
2034 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2038 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2039 [Define if your assembler supports .balign and .p2align.])])
2041 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2044 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2045 [Define if your assembler supports specifying the maximum number
2046 of bytes to skip when using the GAS .p2align command.])])
2048 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2051 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2052 [Define if your assembler supports .literal16.])])
2054 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2056 [conftest_label1: .word 0
2058 conftest_label2: .word 0
2060 [if test x$gcc_cv_nm != x; then
2061 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2062 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2063 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2065 else gcc_cv_as_subsection_m1=yes
2067 rm -f conftest.nm1 conftest.nm2
2069 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2070 [Define if your assembler supports .subsection and .subsection -1 starts
2071 emitting at the beginning of your section.])])
2073 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2076 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2078 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2080 [ .weakref foobar, barfnot],,
2081 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2083 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2086 .NSUBSPA $CODE$,COMDAT],,
2087 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2089 # .hidden needs to be supported in both the assembler and the linker,
2090 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2091 # This is irritatingly difficult to feature test for; we have to check the
2092 # date string after the version number. If we've got an in-tree
2093 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2095 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2096 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2101 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2102 [if test $in_tree_ld = yes ; then
2104 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2105 && test $in_tree_ld_is_elf = yes; then
2106 gcc_cv_ld_hidden=yes
2110 gcc_cv_ld_hidden=yes
2111 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2112 if echo "$ld_ver" | grep GNU > /dev/null; then
2113 ld_vers=`echo $ld_ver | sed -n \
2114 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2115 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2116 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2117 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2118 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2119 if test 0"$ld_date" -lt 20020404; then
2120 if test -n "$ld_date"; then
2121 # If there was date string, but was earlier than 2002-04-04, fail
2123 elif test -z "$ld_vers"; then
2124 # If there was no date string nor ld version number, something is wrong
2127 test -z "$ld_vers_patch" && ld_vers_patch=0
2128 if test "$ld_vers_major" -lt 2; then
2130 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2131 gcc_cv_ld_hidden="no"
2132 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2139 hppa64*-*-hpux* | ia64*-*-hpux*)
2140 gcc_cv_ld_hidden=yes
2142 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2143 gcc_cv_ld_hidden=yes
2152 libgcc_visibility=no
2153 AC_SUBST(libgcc_visibility)
2154 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2155 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2156 libgcc_visibility=yes
2157 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2158 [Define if your assembler and linker support .hidden.])
2161 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2162 gcc_cv_ld_ro_rw_mix=unknown
2163 if test $in_tree_ld = yes ; then
2164 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2165 && test $in_tree_ld_is_elf = yes; then
2166 gcc_cv_ld_ro_rw_mix=read-write
2168 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2169 echo '.section myfoosect, "a"' > conftest1.s
2170 echo '.section myfoosect, "aw"' > conftest2.s
2171 echo '.byte 1' >> conftest2.s
2172 echo '.section myfoosect, "a"' > conftest3.s
2173 echo '.byte 0' >> conftest3.s
2174 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2175 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2176 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2177 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2178 conftest2.o conftest3.o > /dev/null 2>&1; then
2179 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2180 | sed -e '/myfoosect/!d' -e N`
2181 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2182 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2183 gcc_cv_ld_ro_rw_mix=read-only
2185 gcc_cv_ld_ro_rw_mix=read-write
2190 rm -f conftest.* conftest[123].*
2193 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2194 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2195 [Define if your linker links a mix of read-only
2196 and read-write sections into a read-write section.])
2198 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2200 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2201 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2209 [# GAS versions before 2.11 do not support uleb128,
2210 # despite appearing to.
2211 # ??? There exists an elf-specific test that will crash
2212 # the assembler. Perhaps it's better to figure out whether
2213 # arbitrary sections are supported and try the test.
2214 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2215 if echo "$as_ver" | grep GNU > /dev/null; then
2217 as_vers=`echo $as_ver | sed -n \
2218 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2219 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2220 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2222 if test $as_major -eq 2 && test $as_minor -lt 11
2224 else gcc_cv_as_leb128=yes
2227 [AC_DEFINE(HAVE_AS_LEB128, 1,
2228 [Define if your assembler supports .sleb128 and .uleb128.])])
2230 # Check if we have assembler support for unwind directives.
2231 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2238 .cfi_escape 1, 2, 3, 4, 5
2242 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2243 # read-only and read-write sections, we need to make sure that the
2244 # assembler used emits read-write .eh_frame sections.
2245 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2246 if test "x$gcc_cv_objdump" != x; then
2247 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2248 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2249 gcc_cv_as_cfi_directive=no
2251 gcc_cv_as_cfi_directive=yes
2254 # no objdump, err on the side of caution
2255 gcc_cv_as_cfi_directive=no
2258 gcc_cv_as_cfi_directive=yes
2262 gcc_cv_as_cfi_directive=yes
2265 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_readelf != x; then
2266 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2270 .cfi_adjust_cfa_offset 64
2272 .cfi_adjust_cfa_offset 128
2276 if $gcc_cv_readelf -wf conftest.o 2>/dev/null \
2277 | grep 'DW_CFA_advance_loc[12]:[ ][ ]*512[ ]' >/dev/null; then
2278 gcc_cv_as_cfi_advance_working=yes
2283 # no readelf, err on the side of caution
2284 gcc_cv_as_cfi_advance_working=no
2286 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2287 [`if test $gcc_cv_as_cfi_directive = yes \
2288 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2289 [Define 0/1 if your assembler supports CFI directives.])
2291 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2292 gcc_cv_as_cfi_personality_directive, ,,
2295 .cfi_personality 0, symbol
2297 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2298 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2299 then echo 1; else echo 0; fi`],
2300 [Define 0/1 if your assembler supports .cfi_personality.])
2302 # GAS versions up to and including 2.11.0 may mis-optimize
2304 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2312 .section .eh_frame,"aw",@progbits
2314 .4byte .LECIE1-.LSCIE1
2328 .4byte .LEFDE1-.LASFDE1
2330 .4byte .LASFDE1-__FRAME_BEGIN__
2338 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2339 cat > conftest.lit <<EOF
2340 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2341 0010 01000000 12000000 18000000 00000000 ................
2342 0020 08000000 04080000 0044 .........D @&t@
2344 cat > conftest.big <<EOF
2345 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2346 0010 00000001 00000012 00000018 00000000 ................
2347 0020 00000008 04000000 0844 .........D @&t@
2349 # If the assembler didn't choke, and we can objdump,
2350 # and we got the correct data, then succeed.
2351 # The text in the here-document typically retains its unix-style line
2352 # endings, while the output of objdump will use host line endings.
2353 # Therefore, use diff -b for the comparisons.
2354 if test x$gcc_cv_objdump != x \
2355 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2356 | tail -3 > conftest.got \
2357 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2358 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2360 gcc_cv_as_eh_frame=yes
2361 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2362 gcc_cv_as_eh_frame=buggy
2364 # Uh oh, what do we do now?
2365 gcc_cv_as_eh_frame=no
2368 if test $gcc_cv_as_eh_frame = buggy; then
2369 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2370 [Define if your assembler mis-optimizes .eh_frame data.])
2373 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2374 [elf,2,12,0], [--fatal-warnings],
2375 [.section .rodata.str, "aMS", @progbits, 1])
2376 if test $gcc_cv_as_shf_merge = no; then
2377 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2378 [elf,2,12,0], [--fatal-warnings],
2379 [.section .rodata.str, "aMS", %progbits, 1])
2381 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2382 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2383 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2385 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2386 [elf,2,16,0], [--fatal-warnings],
2387 [.section .text,"axG",@progbits,.foo,comdat])
2388 if test $gcc_cv_as_comdat_group = yes; then
2389 gcc_cv_as_comdat_group_percent=no
2391 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2392 [elf,2,16,0], [--fatal-warnings],
2393 [.section .text,"axG",%progbits,.foo,comdat])
2395 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2397 if test 0"$ld_date" -lt 20050308; then
2398 if test -n "$ld_date"; then
2399 # If there was date string, but was earlier than 2005-03-08, fail
2401 elif test "$ld_vers_major" -lt 2; then
2403 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2408 # assume linkers other than GNU ld don't support COMDAT group
2411 if test $comdat_group = no; then
2412 gcc_cv_as_comdat_group=no
2413 gcc_cv_as_comdat_group_percent=no
2415 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2416 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2417 [Define 0/1 if your assembler and linker support COMDAT groups.])
2419 # Thread-local storage - the check is heavily parameterized.
2428 .section ".tdata","awT",@progbits
2431 ldq $27,__tls_get_addr($29) !literal!1
2432 lda $16,foo($29) !tlsgd!1
2433 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2434 ldq $27,__tls_get_addr($29) !literal!2
2435 lda $16,foo($29) !tlsldm!2
2436 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2437 ldq $1,foo($29) !gotdtprel
2438 ldah $2,foo($29) !dtprelhi
2439 lda $3,foo($2) !dtprello
2440 lda $4,foo($29) !dtprel
2441 ldq $1,foo($29) !gottprel
2442 ldah $2,foo($29) !tprelhi
2443 lda $3,foo($2) !tprello
2444 lda $4,foo($29) !tprel'
2447 tls_as_opt=--fatal-warnings
2451 .section ".tdata","awT",@progbits
2463 .section ".tdata","awT",@progbits
2467 addil LT%foo-$tls_gdidx$,gp
2468 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2471 addil LT%foo-$tls_ldidx$,gp
2473 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2474 addil LR%foo-$tls_dtpoff$,%ret0
2475 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2477 addil LT%foo-$tls_ieoff$,gp
2478 ldw RT%foo-$tls_ieoff$(%r1),%t2
2481 addil LR%foo-$tls_leoff$,%t1
2482 ldo RR%foo-$tls_leoff$(%r1),%t2'
2485 tls_as_opt=--fatal-warnings
2489 .section ".tdata","awT",%progbits
2502 .section ".tdata","awT",@progbits
2506 leal foo@TLSGD(,%ebx,1), %eax
2507 leal foo@TLSLDM(%ebx), %eax
2508 leal foo@DTPOFF(%eax), %edx
2509 movl foo@GOTTPOFF(%ebx), %eax
2510 subl foo@GOTTPOFF(%ebx), %eax
2511 addl foo@GOTNTPOFF(%ebx), %eax
2512 movl foo@INDNTPOFF, %eax
2513 movl $foo@TPOFF, %eax
2514 subl $foo@TPOFF, %eax
2515 leal foo@NTPOFF(%ecx), %eax'
2518 tls_as_opt=--fatal-warnings
2522 .section ".tdata","awT",@progbits
2526 leaq foo@TLSGD(%rip), %rdi
2527 leaq foo@TLSLD(%rip), %rdi
2528 leaq foo@DTPOFF(%rax), %rdx
2529 movq foo@GOTTPOFF(%rip), %rax
2530 movq $foo@TPOFF, %rax'
2533 tls_as_opt=--fatal-warnings
2537 .section ".tdata","awT",@progbits
2540 addl r16 = @ltoff(@dtpmod(foo#)), gp
2541 addl r17 = @ltoff(@dtprel(foo#)), gp
2542 addl r18 = @ltoff(@tprel(foo#)), gp
2543 addl r19 = @dtprel(foo#), gp
2544 adds r21 = @dtprel(foo#), r13
2545 movl r23 = @dtprel(foo#)
2546 addl r20 = @tprel(foo#), gp
2547 adds r22 = @tprel(foo#), r13
2548 movl r24 = @tprel(foo#)'
2551 tls_as_opt=--fatal-warnings
2555 .section .tdata,"awT",@progbits
2559 addiu $4, $28, %tlsgd(x)
2560 addiu $4, $28, %tlsldm(x)
2561 lui $4, %dtprel_hi(x)
2562 addiu $4, $4, %dtprel_lo(x)
2563 lw $4, %gottprel(x)($28)
2564 lui $4, %tprel_hi(x)
2565 addiu $4, $4, %tprel_lo(x)'
2568 tls_as_opt='-32 --fatal-warnings'
2572 .section ".tdata","awT",@progbits
2580 addi 3,31,ld0@got@tlsgd
2582 addi 3,31,x1@got@tlsld
2585 addis 9,3,x2@dtprel@ha
2586 addi 9,9,x2@dtprel@l
2587 lwz 9,x3@got@tprel(31)
2590 addis 9,2,x2@tprel@ha
2591 addi 9,9,x2@tprel@l'
2594 tls_as_opt="-a32 --fatal-warnings"
2598 .section ".tdata","awT",@progbits
2606 addi 3,2,ld0@got@tlsgd
2612 addi 3,2,x1@got@tlsld
2618 addis 9,3,x2@dtprel@ha
2619 addi 9,9,x2@dtprel@l
2622 ld 9,x3@got@dtprel(2)
2628 tls_as_opt="-a64 --fatal-warnings"
2632 .section ".tdata","awT",@progbits
2641 l %r1,foo@GOTNTPOFF(%r12)
2642 l %r1,0(%r1):tls_load:foo
2643 bas %r14,0(%r1,%r13):tls_gdcall:foo
2644 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2647 tls_as_opt="-m31 --fatal-warnings"
2651 .section ".tdata","awT",@progbits
2659 lg %r1,foo@GOTNTPOFF(%r12)
2660 larl %r1,foo@INDNTPOFF
2661 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2662 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2665 tls_as_opt="-m64 -Aesame --fatal-warnings"
2667 sh-*-* | sh[34]-*-*)
2669 .section ".tdata","awT",@progbits
2679 tls_as_opt=--fatal-warnings
2683 sparc*-sun-solaris2.[56789]*)
2684 # TLS was introduced in the Solaris 9 4/04 release but
2685 # we do not enable it by default on Solaris 9 either.
2686 if test "x$enable_tls" = xyes ; then
2692 sparc*-sun-solaris2.*)
2699 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2701 .section ".tdata",#alloc,#write,#tls
2704 sethi %tgd_hi22(foo), %o0
2705 add %o0, %tgd_lo10(foo), %o1
2706 add %l7, %o1, %o0, %tgd_add(foo)
2707 call __tls_get_addr, %tgd_call(foo)
2708 sethi %tldm_hi22(foo), %l1
2709 add %l1, %tldm_lo10(foo), %l2
2710 add %l7, %l2, %o0, %tldm_add(foo)
2711 call __tls_get_addr, %tldm_call(foo)
2712 sethi %tldo_hix22(foo), %l3
2713 xor %l3, %tldo_lox10(foo), %l4
2714 add %o0, %l4, %l5, %tldo_add(foo)
2715 sethi %tie_hi22(foo), %o3
2716 add %o3, %tie_lo10(foo), %o3
2717 ld [%l7 + %o3], %o2, %tie_ld(foo)
2718 add %g7, %o2, %o4, %tie_add(foo)
2719 sethi %tle_hix22(foo), %l1
2720 xor %l1, %tle_lox10(foo), %o5
2721 ld [%g7 + %o5], %o1'
2726 .section ".tdata","awT",@progbits
2729 sethi %tgd_hi22(foo), %o0
2730 add %o0, %tgd_lo10(foo), %o1
2731 add %l7, %o1, %o0, %tgd_add(foo)
2732 call __tls_get_addr, %tgd_call(foo)
2733 sethi %tldm_hi22(foo), %l1
2734 add %l1, %tldm_lo10(foo), %l2
2735 add %l7, %l2, %o0, %tldm_add(foo)
2736 call __tls_get_addr, %tldm_call(foo)
2737 sethi %tldo_hix22(foo), %l3
2738 xor %l3, %tldo_lox10(foo), %l4
2739 add %o0, %l4, %l5, %tldo_add(foo)
2740 sethi %tie_hi22(foo), %o3
2741 add %o3, %tie_lo10(foo), %o3
2742 ld [%l7 + %o3], %o2, %tie_ld(foo)
2743 add %g7, %o2, %o4, %tie_add(foo)
2744 sethi %tle_hix22(foo), %l1
2745 xor %l1, %tle_lox10(foo), %o5
2746 ld [%g7 + %o5], %o1'
2749 tls_as_opt="-32 --fatal-warnings"
2754 .section ".tdata","awT",@progbits
2757 movi a8, foo@TLSFUNC
2758 movi a10, foo@TLSARG
2759 callx8.tls a8, foo@TLSCALL'
2766 if test "x$enable_tls" = xno ; then
2767 : # TLS explicitly disabled.
2768 elif test "x$enable_tls" = xyes ; then
2769 set_have_as_tls=yes # TLS explicitly enabled.
2770 elif test -z "$tls_first_major"; then
2771 : # If we don't have a check, assume no support.
2773 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2774 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2775 [set_have_as_tls=yes])
2777 if test $set_have_as_tls = yes ; then
2778 AC_DEFINE(HAVE_AS_TLS, 1,
2779 [Define if your assembler supports thread-local storage.])
2782 # Target-specific assembler checks.
2784 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2785 gcc_cv_ld_static_dynamic=no
2786 if test $in_tree_ld = yes ; then
2787 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2788 gcc_cv_ld_static_dynamic=yes
2790 elif test x$gcc_cv_ld != x; then
2791 # Check if linker supports -Bstatic/-Bdynamic option
2792 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2793 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2794 gcc_cv_ld_static_dynamic=yes
2797 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2798 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2799 [Define if your linker supports -Bstatic/-Bdynamic option.])
2801 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2803 if test x"$demangler_in_ld" = xyes; then
2804 AC_MSG_CHECKING(linker --demangle support)
2805 gcc_cv_ld_demangle=no
2806 if test $in_tree_ld = yes; then
2807 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2808 gcc_cv_ld_demangle=yes
2810 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2811 # Check if the GNU linker supports --demangle option
2812 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2813 gcc_cv_ld_demangle=yes
2816 if test x"$gcc_cv_ld_demangle" = xyes; then
2817 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2818 [Define if your linker supports --demangle option.])
2820 AC_MSG_RESULT($gcc_cv_ld_demangle)
2824 # All TARGET_ABI_OSF targets.
2825 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2826 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2827 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2830 extbl $3, $2, $3 !lituse_bytoff!1
2831 ldq $2, a($29) !literal!1
2832 ldq $4, b($29) !literal!2
2833 ldq_u $3, 0($2) !lituse_base!1
2834 ldq $27, f($29) !literal!5
2835 jsr $26, ($27), f !lituse_jsr!5
2836 ldah $29, 0($26) !gpdisp!3
2837 lda $0, c($29) !gprel
2838 ldah $1, d($29) !gprelhigh
2839 lda $1, d($1) !gprellow
2840 lda $29, 0($29) !gpdisp!3],,
2841 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2842 [Define if your assembler supports explicit relocations.])])
2843 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2844 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2847 ldq $27, a($29) !literal!1
2848 jsr $26, ($27), a !lituse_jsrdirect!1],,
2849 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2850 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2854 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2855 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2856 [-no-mul-bug-abort], [.text],,
2857 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2858 [Define if your assembler supports the -no-mul-bug-abort option.])])
2862 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2863 [.register %g2, #scratch],,
2864 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2865 [Define if your assembler supports .register.])])
2867 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2869 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2870 [Define if your assembler supports -relax option.])])
2872 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2873 gcc_cv_as_sparc_ua_pcrel,,
2881 .uaword %r_disp32(foo)],
2882 [if test x$gcc_cv_ld != x \
2883 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2884 gcc_cv_as_sparc_ua_pcrel=yes
2887 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2888 [Define if your assembler and linker support unaligned PC relative relocs.])
2890 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2891 gcc_cv_as_sparc_ua_pcrel_hidden,,
2896 .uaword %r_disp32(foo)
2897 .byte 0x32, 0x33, 0x34
2902 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2903 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2904 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2905 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2906 if $gcc_cv_objdump -R conftest 2> /dev/null \
2907 | grep 'DISP32' > /dev/null 2>&1; then
2910 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2914 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2915 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2916 ]) # unaligned pcrel relocs
2918 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2919 gcc_cv_as_sparc_offsetable_lo10,,
2922 or %g1, %lo(ab) + 12, %g1
2923 or %g1, %lo(ab + 12), %g1],
2924 [if test x$gcc_cv_objdump != x \
2925 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2926 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2927 gcc_cv_as_sparc_offsetable_lo10=yes
2929 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2930 [Define if your assembler supports offsetable %lo().])])
2934 i[34567]86-*-* | x86_64-*-*)
2937 cygwin* | pe | mingw32*)
2938 # Used for DWARF 2 in PE
2939 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2940 gcc_cv_as_ix86_pe_secrel32,
2946 [if test x$gcc_cv_ld != x \
2947 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2948 gcc_cv_as_ix86_pe_secrel32=yes
2951 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2952 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2956 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2957 gcc_cv_as_ix86_filds_fists,
2958 [2,9,0],, [filds mem; fists mem],,
2959 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2960 [Define if your assembler uses the new HImode fild and fist notation.])])
2962 gcc_GAS_CHECK_FEATURE([cmov syntax],
2963 gcc_cv_as_ix86_cmov_sun_syntax,,,
2964 [cmovl.l %edx, %eax],,
2965 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2966 [Define if your assembler supports the Sun syntax for cmov.])])
2968 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2969 gcc_cv_as_ix86_ffreep,,,
2971 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2972 [Define if your assembler supports the ffreep mnemonic.])])
2974 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
2975 gcc_cv_as_ix86_sahf,,,
2977 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
2978 [Define if your assembler supports the sahf mnemonic.])])
2980 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2981 gcc_cv_as_ix86_diff_sect_delta,,,
2989 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2990 [Define if your assembler supports the subtraction of symbols in different sections.])])
2992 # This one is used unconditionally by i386.[ch]; it is to be defined
2993 # to 1 if the feature is present, 0 otherwise.
2994 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2995 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3001 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3002 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3003 [Define true if the assembler supports '.long foo@GOTOFF'.])
3007 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3008 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3010 addl r15 = @ltoffx(x#), gp
3012 ld8.mov r16 = [[r15]], x#],,
3013 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3014 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3020 *-*-aix*) conftest_s=' .machine "pwr5"
3024 gcc_GAS_CHECK_FEATURE([.machine directive support],
3025 gcc_cv_as_machine_directive,,,
3026 [ .machine ppc7400])
3027 if test x$gcc_cv_as_machine_directive != xyes; then
3028 echo "*** This target requires an assembler supporting \".machine\"" >&2
3029 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3030 test x$build = x$target && exit 1
3034 *) conftest_s=' .machine power4
3039 gcc_GAS_CHECK_FEATURE([mfcr field support],
3040 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3042 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3043 [Define if your assembler supports mfcr field.])])
3046 *-*-aix*) conftest_s=' .machine "pwr5"
3049 *) conftest_s=' .machine power5
3054 gcc_GAS_CHECK_FEATURE([popcntb support],
3055 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3057 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3058 [Define if your assembler supports popcntb field.])])
3061 *-*-aix*) conftest_s=' .machine "pwr5x"
3064 *) conftest_s=' .machine power5
3069 gcc_GAS_CHECK_FEATURE([fp round support],
3070 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3072 [AC_DEFINE(HAVE_AS_FPRND, 1,
3073 [Define if your assembler supports fprnd.])])
3076 *-*-aix*) conftest_s=' .machine "pwr6"
3079 *) conftest_s=' .machine power6
3084 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3085 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
3087 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3088 [Define if your assembler supports mffgpr and mftgpr.])])
3091 *-*-aix*) conftest_s=' .csect .text[[PR]]
3093 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3097 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3098 *) conftest_s=' .text
3100 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3103 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3104 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3106 [AC_DEFINE(HAVE_AS_REL16, 1,
3107 [Define if your assembler supports R_PPC_REL16 relocs.])])
3110 *-*-aix*) conftest_s=' .machine "pwr6"
3113 *) conftest_s=' .machine power6
3118 gcc_GAS_CHECK_FEATURE([compare bytes support],
3119 gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
3121 [AC_DEFINE(HAVE_AS_CMPB, 1,
3122 [Define if your assembler supports cmpb.])])
3125 *-*-aix*) conftest_s=' .machine "pwr6"
3128 *) conftest_s=' .machine power6
3133 gcc_GAS_CHECK_FEATURE([decimal float support],
3134 gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
3136 [AC_DEFINE(HAVE_AS_DFP, 1,
3137 [Define if your assembler supports DFP instructions.])])
3140 *-*-aix*) conftest_s=' .machine "pwr7"
3143 *) conftest_s=' .machine power7
3148 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3149 gcc_cv_as_powerpc_vsx, [9,99,0], -a32,
3151 [AC_DEFINE(HAVE_AS_VSX, 1,
3152 [Define if your assembler supports VSX instructions.])])
3154 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3155 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3156 [.gnu_attribute 4,1],,
3157 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3158 [Define if your assembler supports .gnu_attribute.])])
3162 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3163 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3164 [ lw $4,%gp_rel(foo)($4)],,
3165 [if test x$target_cpu_default = x
3166 then target_cpu_default=MASK_EXPLICIT_RELOCS
3167 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3169 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3170 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3171 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3172 [Define if the assembler understands -mno-shared.])])
3174 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3175 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3176 [.gnu_attribute 4,1],,
3177 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3178 [Define if your assembler supports .gnu_attribute.])])
3180 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3181 gcc_cv_as_mips_dtprelword, [2,18,0],,
3182 [.section .tdata,"awT",@progbits
3186 .dtprelword x+0x8000],,
3187 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3188 [Define if your assembler supports .dtprelword.])])
3192 # Mips and HP-UX need the GNU assembler.
3193 # Linux on IA64 might be able to use the Intel assembler.
3196 mips*-*-* | *-*-hpux* )
3197 if test x$gas_flag = xyes \
3198 || test x"$host" != x"$build" \
3199 || test ! -x "$gcc_cv_as" \
3200 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3203 echo "*** This configuration requires the GNU assembler" >&2
3209 # ??? Not all targets support dwarf2 debug_line, even within a version
3210 # of gas. Moreover, we need to emit a valid instruction to trigger any
3211 # info to the output file. So, as supported targets are added to gas 2.11,
3212 # add some instruction here to (also) show we expect this might work.
3213 # ??? Once 2.11 is released, probably need to add first known working
3214 # version to the per-target configury.
3216 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3217 | x86_64*-*-* | hppa*-*-* | arm*-*-* \
3218 | xstormy16*-*-* | cris-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \
3219 | spu-*-* | fido*-*-* | m32c-*-*)
3222 ia64*-*-* | s390*-*-*)
3229 if test x"$insn" != x; then
3231 .file 1 \"conftest.s\"
3234 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3235 gcc_cv_as_dwarf2_debug_line,
3236 [elf,2,11,0],, [$conftest_s],
3237 [if test x$gcc_cv_objdump != x \
3238 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3239 | grep debug_line > /dev/null 2>&1; then
3240 gcc_cv_as_dwarf2_debug_line=yes
3243 # The .debug_line file table must be in the exact order that
3244 # we specified the files, since these indices are also used
3245 # by DW_AT_decl_file. Approximate this test by testing if
3246 # the assembler bitches if the same index is assigned twice.
3247 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3248 gcc_cv_as_dwarf2_file_buggy,,,
3252 if test $gcc_cv_as_dwarf2_debug_line = yes \
3253 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3254 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3255 [Define if your assembler supports dwarf2 .file/.loc directives,
3256 and preserves file table indices exactly as given.])
3259 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3260 gcc_cv_as_gdwarf2_flag,
3261 [elf,2,11,0], [--gdwarf2], [$insn],,
3262 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3263 [Define if your assembler supports the --gdwarf2 option.])])
3265 gcc_GAS_CHECK_FEATURE([--gstabs option],
3266 gcc_cv_as_gstabs_flag,
3267 [elf,2,11,0], [--gstabs], [$insn],
3268 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3269 # and warns about it, but still exits successfully. So check for
3271 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3273 else gcc_cv_as_gstabs_flag=yes
3275 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3276 [Define if your assembler supports the --gstabs option.])])
3278 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3279 gcc_cv_as_debug_prefix_map_flag,
3280 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3281 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3282 [Define if your assembler supports the --debug-prefix-map option.])])
3285 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3288 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3289 [Define if your assembler supports .lcomm with an alignment field.])])
3291 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3292 [gcc_cv_as_line_zero],
3293 [gcc_cv_as_line_zero=no
3294 if test $in_tree_gas = yes; then
3295 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3296 elif test "x$gcc_cv_as" != x; then
3297 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3298 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3299 test "x`cat conftest.out`" = x
3301 gcc_cv_as_line_zero=yes
3303 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3304 cat conftest.s >&AS_MESSAGE_LOG_FD
3305 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3306 cat conftest.out >&AS_MESSAGE_LOG_FD
3308 rm -f conftest.o conftest.s conftest.out
3310 if test "x$gcc_cv_as_line_zero" = xyes; then
3311 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3312 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3315 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3316 gcc_cv_ld_eh_frame_hdr=no
3317 if test $in_tree_ld = yes ; then
3318 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3319 && test $in_tree_ld_is_elf = yes; then
3320 gcc_cv_ld_eh_frame_hdr=yes
3322 elif test x$gcc_cv_ld != x; then
3323 # Check if linker supports --eh-frame-hdr option
3324 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3325 gcc_cv_ld_eh_frame_hdr=yes
3328 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3329 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3330 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3331 [Define if your linker supports --eh-frame-hdr option.])
3333 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3335 AC_MSG_CHECKING(linker position independent executable support)
3337 if test $in_tree_ld = yes ; then
3338 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3339 && test $in_tree_ld_is_elf = yes; then
3342 elif test x$gcc_cv_ld != x; then
3343 # Check if linker supports -pie option
3344 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3348 if test x"$gcc_cv_ld_pie" = xyes; then
3349 AC_DEFINE(HAVE_LD_PIE, 1,
3350 [Define if your linker supports -pie option.])
3352 AC_MSG_RESULT($gcc_cv_ld_pie)
3354 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3355 gcc_cv_ld_eh_gc_sections=no
3356 if test $in_tree_ld = yes ; then
3357 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3358 && test $in_tree_ld_is_elf = yes; then
3359 gcc_cv_ld_eh_gc_sections=yes
3361 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3362 cat > conftest.s <<EOF
3365 .type _start, @function
3368 .size _start, .-_start
3369 .section .text.foo,"ax",@progbits
3370 .type foo, @function
3374 .section .gcc_except_table.foo,"a",@progbits
3377 .section .eh_frame,"a",@progbits
3380 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3381 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3382 | grep "gc-sections option ignored" > /dev/null; then
3383 gcc_cv_ld_eh_gc_sections=no
3384 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3385 gcc_cv_ld_eh_gc_sections=yes
3386 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3387 if test x$gcc_cv_as_comdat_group != xyes; then
3388 gcc_cv_ld_eh_gc_sections=no
3389 cat > conftest.s <<EOF
3392 .type _start, @function
3395 .size _start, .-_start
3396 .section .gnu.linkonce.t.foo,"ax",@progbits
3397 .type foo, @function
3401 .section .gcc_except_table.foo,"a",@progbits
3404 .section .eh_frame,"a",@progbits
3407 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3408 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3409 | grep "gc-sections option ignored" > /dev/null; then
3410 gcc_cv_ld_eh_gc_sections=no
3411 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3412 gcc_cv_ld_eh_gc_sections=yes
3418 rm -f conftest.s conftest.o conftest
3422 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3423 gcc_cv_ld_eh_gc_sections=no
3426 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3427 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3428 [Define if your linker supports garbage collection of
3429 sections in presence of EH frames.])
3431 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3437 AC_CACHE_CHECK(linker --as-needed support,
3438 gcc_cv_ld_as_needed,
3439 [gcc_cv_ld_as_needed=no
3440 if test $in_tree_ld = yes ; then
3441 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3442 && test $in_tree_ld_is_elf = yes; then
3443 gcc_cv_ld_as_needed=yes
3445 elif test x$gcc_cv_ld != x; then
3446 # Check if linker supports --as-needed and --no-as-needed options
3447 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3448 gcc_cv_ld_as_needed=yes
3452 if test x"$gcc_cv_ld_as_needed" = xyes; then
3453 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3454 [Define if your linker supports --as-needed and --no-as-needed options.])
3457 case "$target:$tm_file" in
3458 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3459 AC_CACHE_CHECK(linker support for omitting dot symbols,
3460 gcc_cv_ld_no_dot_syms,
3461 [gcc_cv_ld_no_dot_syms=no
3462 if test $in_tree_ld = yes ; then
3463 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3464 gcc_cv_ld_no_dot_syms=yes
3466 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3467 cat > conftest1.s <<EOF
3471 cat > conftest2.s <<EOF
3472 .section ".opd","aw"
3477 .quad .LEfoo,.TOC.@tocbase,0
3483 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3484 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3485 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3486 gcc_cv_ld_no_dot_syms=yes
3488 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3491 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3492 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3493 [Define if your PowerPC64 linker only needs function descriptor syms.])
3498 AC_CACHE_CHECK(linker --sysroot support,
3500 [gcc_cv_ld_sysroot=no
3501 if test $in_tree_ld = yes ; then
3502 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3503 gcc_cv_ld_sysroot=yes
3505 elif test x$gcc_cv_ld != x; then
3506 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3507 gcc_cv_ld_sysroot=yes
3510 if test x"$gcc_cv_ld_sysroot" = xyes; then
3511 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3512 [Define if your linker supports --sysroot.])
3515 if test x$with_sysroot = x && test x$host = x$target \
3516 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3517 && test "$prefix" != "NONE"; then
3518 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3519 [Define to PREFIX/include if cpp should also search that directory.])
3522 # Test for stack protector support in target C library.
3523 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3524 gcc_cv_libc_provides_ssp,
3525 [gcc_cv_libc_provides_ssp=no
3527 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
3528 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3529 if test "x$with_sysroot" = x; then
3530 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3531 elif test "x$with_build_sysroot" != "x"; then
3532 glibc_header_dir="${with_build_sysroot}/usr/include"
3533 elif test "x$with_sysroot" = xyes; then
3534 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3536 glibc_header_dir="${with_sysroot}/usr/include"
3539 glibc_header_dir=/usr/include
3541 # glibc 2.4 and later provides __stack_chk_fail and
3542 # either __stack_chk_guard, or TLS access to stack guard canary.
3543 if test -f $glibc_header_dir/features.h \
3544 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3545 $glibc_header_dir/features.h > /dev/null; then
3546 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3547 $glibc_header_dir/features.h > /dev/null; then
3548 gcc_cv_libc_provides_ssp=yes
3549 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3550 $glibc_header_dir/features.h > /dev/null \
3551 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3552 $glibc_header_dir/features.h > /dev/null; then
3553 gcc_cv_libc_provides_ssp=yes
3554 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
3555 $glibc_header_dir/features.h > /dev/null && \
3556 test -f $glibc_header_dir/bits/uClibc_config.h && \
3557 $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
3558 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
3559 gcc_cv_libc_provides_ssp=yes
3564 # Avoid complicated tests (see
3565 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
3566 # simply assert that glibc does provide this, which is true for all
3567 # realistically usable GNU/Hurd configurations.
3568 gcc_cv_libc_provides_ssp=yes;;
3570 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3571 [echo "no __stack_chk_fail on this target"])
3573 *) gcc_cv_libc_provides_ssp=no ;;
3576 if test x$gcc_cv_libc_provides_ssp = xyes; then
3577 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3578 [Define if your target C library provides stack protector support])
3581 # Check if TFmode long double should be used by default or not.
3582 # Some glibc targets used DFmode long double, but with glibc 2.4
3583 # and later they can use TFmode.
3585 powerpc*-*-linux* | \
3590 AC_ARG_WITH(long-double-128,
3591 [ --with-long-double-128 Use 128-bit long double by default.],
3592 gcc_cv_target_ldbl128="$with_long_double_128",
3593 [gcc_cv_target_ldbl128=no
3594 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3595 if test "x$with_sysroot" = x; then
3596 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3597 elif test "x$with_build_sysroot" != "x"; then
3598 glibc_header_dir="${with_build_sysroot}/usr/include"
3599 elif test "x$with_sysroot" = xyes; then
3600 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3602 glibc_header_dir="${with_sysroot}/usr/include"
3605 glibc_header_dir=/usr/include
3608 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3609 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3610 && gcc_cv_target_ldbl128=yes
3615 if test x$gcc_cv_target_ldbl128 = xyes; then
3616 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3617 [Define if TFmode long double should be the default])
3620 # Find out what GC implementation we want, or may, use.
3622 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3630 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3633 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3638 echo "Using $GGC for garbage collection."
3640 # Use the system's zlib library.
3642 zlibinc="-I\$(srcdir)/../zlib"
3643 AC_ARG_WITH(system-zlib,
3644 [ --with-system-zlib use installed libz],
3651 dnl Very limited version of automake's enable-maintainer-mode
3653 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3654 dnl maintainer-mode is disabled by default
3655 AC_ARG_ENABLE(maintainer-mode,
3656 [ --enable-maintainer-mode
3657 enable make rules and dependencies not useful
3658 (and sometimes confusing) to the casual installer],
3659 maintainer_mode=$enableval,
3662 AC_MSG_RESULT($maintainer_mode)
3664 if test "$maintainer_mode" = "yes"; then
3675 # Make empty files to contain the specs and options for each language.
3676 # Then add #include lines to for a compiler that has specs and/or options.
3682 # These (without "all_") are set in each config-lang.in.
3683 # `language' must be a single word so is spelled singularly.
3686 all_outputs='Makefile gccbug'
3687 # List of language makefile fragments.
3689 # List of language subdirectory makefiles. Deprecated.
3691 # Additional files for gengtype
3692 all_gtfiles="$target_gtfiles"
3694 # These are the languages that are set in --enable-languages,
3695 # and are available in the GCC tree.
3696 all_selected_languages=
3698 # Add the language fragments.
3699 # Languages are added via two mechanisms. Some information must be
3700 # recorded in makefile variables, these are defined in config-lang.in.
3701 # We accumulate them and plug them into the main Makefile.
3702 # The other mechanism is a set of hooks for each of the main targets
3703 # like `clean', `install', etc.
3705 language_hooks="Make-hooks"
3707 for lang in ${srcdir}/*/config-lang.in
3710 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3712 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3713 if test "x$lang_alias" = x
3715 echo "$lang doesn't set \$language." 1>&2
3718 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3719 subdirs="$subdirs $subdir"
3721 # $gcc_subdir is where the gcc integration files are to be found
3722 # for a language, both for internal compiler purposes (compiler
3723 # sources implementing front-end to GCC tree converters), and for
3724 # build infrastructure purposes (Make-lang.in, etc.)
3726 # This will be <subdir> (relative to $srcdir) if a line like
3727 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
3728 # is found in <langdir>/config-lang.in, and will remain <langdir>
3731 # Except for the language alias (fetched above), the regular
3732 # "config-lang.in" contents are always retrieved from $gcc_subdir,
3733 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
3734 # only this and the language alias.
3736 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
3737 if [ "$gcc_subdir" = "" ]; then
3738 gcc_subdir="$subdir"
3741 case ",$enable_languages," in
3743 all_selected_languages="$all_selected_languages $lang_alias"
3744 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
3745 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
3757 . ${srcdir}/$gcc_subdir/config-lang.in
3758 if test "x$language" = x
3760 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
3765 case ",$enable_languages," in
3768 for i in $subdir_requires; do
3769 test -f "${srcdir}/$i/config-lang.in" && continue
3777 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
3778 if test -f $srcdir/$gcc_subdir/lang.opt; then
3779 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
3781 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
3782 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
3784 if test -f ${srcdir}/$gcc_subdir/Makefile.in
3785 then all_lang_makefiles="$gcc_subdir/Makefile"
3787 all_languages="$all_languages $language"
3788 all_compilers="$all_compilers $compilers"
3789 all_outputs="$all_outputs $outputs"
3790 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
3793 # Pick up gtfiles for c
3795 . ${srcdir}/c-config-lang.in
3796 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
3799 for language in $all_selected_languages
3801 check_languages="$check_languages check-$language"
3804 # We link each language in with a set of hooks, reached indirectly via
3805 # lang.${target}. Only do so for selected languages.
3809 target_list="all.cross start.encap rest.encap tags \
3810 install-common install-man install-info install-pdf dvi pdf \
3811 html uninstall info man srcextra srcman srcinfo \
3812 mostlyclean clean distclean maintainer-clean"
3814 for t in $target_list
3817 for lang in $all_selected_languages
3821 echo "lang.$t: $x" >> Make-hooks
3830 echo "dir ." > .gdbinit
3831 echo "dir ${srcdir}" >> .gdbinit
3832 if test x$gdb_needs_out_file_path = xyes
3834 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3836 if test "x$subdirs" != x; then
3839 echo "dir ${srcdir}/$s" >> .gdbinit
3842 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3844 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
3845 AC_SUBST(gcc_tooldir)
3848 # Find a directory in which to install a shared libgcc.
3850 AC_ARG_ENABLE(version-specific-runtime-libs,
3851 [ --enable-version-specific-runtime-libs
3852 specify that runtime libraries should be
3853 installed in a compiler-specific directory])
3855 AC_ARG_WITH(slibdir,
3856 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3857 slibdir="$with_slibdir",
3858 if test "${enable_version_specific_runtime_libs+set}" = set; then
3859 slibdir='$(libsubdir)'
3860 elif test "$host" != "$target"; then
3861 slibdir='$(build_tooldir)/lib'
3867 AC_ARG_WITH(datarootdir,
3868 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3869 datarootdir="\${prefix}/$with_datarootdir",
3870 datarootdir='$(prefix)/share')
3871 AC_SUBST(datarootdir)
3874 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3875 docdir="\${prefix}/$with_docdir",
3876 docdir='$(datarootdir)')
3879 AC_ARG_WITH(htmldir,
3880 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3881 htmldir="\${prefix}/$with_htmldir",
3882 htmldir='$(docdir)')
3885 # Substitute configuration variables
3888 AC_SUBST(all_compilers)
3889 AC_SUBST(all_gtfiles)
3890 AC_SUBST(all_lang_makefrags)
3891 AC_SUBST(all_lang_makefiles)
3892 AC_SUBST(all_languages)
3893 AC_SUBST(all_selected_languages)
3894 AC_SUBST(build_exeext)
3895 AC_SUBST(build_install_headers_dir)
3896 AC_SUBST(build_xm_file_list)
3897 AC_SUBST(build_xm_include_list)
3898 AC_SUBST(build_xm_defines)
3899 AC_SUBST(build_file_translate)
3900 AC_SUBST(check_languages)
3901 AC_SUBST(cpp_install_dir)
3902 AC_SUBST(xmake_file)
3903 AC_SUBST(tmake_file)
3904 AC_SUBST(extra_gcc_objs)
3905 AC_SUBST(extra_headers_list)
3906 AC_SUBST(extra_objs)
3907 AC_SUBST(extra_parts)
3908 AC_SUBST(extra_passes)
3909 AC_SUBST(extra_programs)
3910 AC_SUBST(float_h_file)
3911 AC_SUBST(gcc_config_arguments)
3912 AC_SUBST(gcc_gxx_include_dir)
3913 AC_SUBST(host_exeext)
3914 AC_SUBST(host_xm_file_list)
3915 AC_SUBST(host_xm_include_list)
3916 AC_SUBST(host_xm_defines)
3917 AC_SUBST(out_host_hook_obj)
3919 AC_SUBST(lang_opt_files)
3920 AC_SUBST(lang_specs_files)
3921 AC_SUBST(lang_tree_files)
3922 AC_SUBST(local_prefix)
3924 AC_SUBST(objc_boehm_gc)
3926 AC_SUBST(out_object_file)
3927 AC_SUBST(thread_file)
3928 AC_SUBST(tm_file_list)
3929 AC_SUBST(tm_include_list)
3930 AC_SUBST(tm_defines)
3931 AC_SUBST(tm_p_file_list)
3932 AC_SUBST(tm_p_include_list)
3933 AC_SUBST(xm_file_list)
3934 AC_SUBST(xm_include_list)
3935 AC_SUBST(xm_defines)
3936 AC_SUBST(c_target_objs)
3937 AC_SUBST(cxx_target_objs)
3938 AC_SUBST(fortran_target_objs)
3939 AC_SUBST(target_cpu_default)
3941 AC_SUBST_FILE(language_hooks)
3944 if test x${build} = x${host} ; then
3945 if test x${host} = x${target} ; then
3946 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3948 echo "Links are now set up to build a cross-compiler" 1>&2
3949 echo " from ${host} to ${target}." 1>&2
3952 if test x${host} = x${target} ; then
3953 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3954 echo " for ${target}." 1>&2
3956 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3957 echo " from ${host} to ${target}." 1>&2
3961 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3962 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3964 AC_ARG_VAR(PPLLIBS,[How to link PPL])
3965 AC_ARG_VAR(PPLINC,[How to find PPL include files])
3967 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
3968 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
3969 if test "x${CLOOGLIBS}" != "x" ; then
3970 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
3973 # Configure the subdirectories
3974 # AC_CONFIG_SUBDIRS($subdirs)
3976 # Create the Makefile
3977 # and configure language subdirectories
3978 AC_CONFIG_FILES($all_outputs)
3980 AC_CONFIG_COMMANDS([default],
3982 case ${CONFIG_HEADERS} in
3983 *auto-host.h:config.in*)
3986 # Make sure all the subdirs exist.
3987 for d in $subdirs doc build
3989 test -d $d || mkdir $d
3992 [subdirs='$subdirs'])