2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
5 # 2007, 2008, 2009 Free Software Foundation, Inc.
7 #This file is part of GCC.
9 #GCC is free software; you can redistribute it and/or modify it under
10 #the terms of the GNU General Public License as published by the Free
11 #Software Foundation; either version 3, or (at your option) any later
14 #GCC is distributed in the hope that it will be useful, but WITHOUT
15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 #You should have received a copy of the GNU General Public License
20 #along with GCC; see the file COPYING3. If not see
21 #<http://www.gnu.org/licenses/>.
23 # --------------------------------
24 # Initialization and sanity checks
25 # --------------------------------
29 AC_CONFIG_SRCDIR(tree.c)
30 AC_CONFIG_HEADER(auto-host.h:config.in)
32 gcc_version=`cat $srcdir/BASE-VER`
34 # Determine the host, build, and target systems
39 # Determine the noncanonical target name, for directory use.
40 ACX_NONCANONICAL_TARGET
42 # Determine the target- and build-specific subdirectories
45 # Set program_transform_name
48 # Check for bogus environment variables.
49 # Test if LIBRARY_PATH contains the notation for the current directory
50 # since this would lead to problems installing/building glibc.
51 # LIBRARY_PATH contains the current directory if one of the following
53 # - one of the terminals (":" and ";") is the first or last sign
54 # - two terminals occur directly after each other
55 # - the path contains an element with a dot in it
56 AC_MSG_CHECKING(LIBRARY_PATH variable)
58 case ${LIBRARY_PATH} in
59 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
60 library_path_setting="contains current directory"
63 library_path_setting="ok"
67 AC_MSG_RESULT($library_path_setting)
68 if test "$library_path_setting" != "ok"; then
70 *** LIBRARY_PATH shouldn't contain the current directory when
71 *** building gcc. Please change the environment variable
72 *** and run configure again.])
75 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
76 # since this would lead to problems installing/building glibc.
77 # GCC_EXEC_PREFIX contains the current directory if one of the following
79 # - one of the terminals (":" and ";") is the first or last sign
80 # - two terminals occur directly after each other
81 # - the path contains an element with a dot in it
82 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
84 case ${GCC_EXEC_PREFIX} in
85 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
86 gcc_exec_prefix_setting="contains current directory"
89 gcc_exec_prefix_setting="ok"
93 AC_MSG_RESULT($gcc_exec_prefix_setting)
94 if test "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [ --with-local-prefix=DIR specifies directory to put local include],
109 [case "${withval}" in
110 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
112 *) local_prefix=$with_local_prefix ;;
115 # Default local prefix if it is empty
116 if test x$local_prefix = x; then
117 local_prefix=/usr/local
120 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
121 # passed in by the toplevel make and thus we'd get different behavior
122 # depending on where we built the sources.
124 # Specify the g++ header file directory
125 AC_ARG_WITH(gxx-include-dir,
126 [ --with-gxx-include-dir=DIR
127 specifies directory to put g++ header files],
128 [case "${withval}" in
129 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
131 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
134 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
135 if test x${gcc_gxx_include_dir} = x; then
136 if test x${enable_version_specific_runtime_libs} = xyes; then
137 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 libstdcxx_incdir='include/c++/$(version)'
140 if test x$host != x$target; then
141 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
143 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
147 AC_ARG_WITH(cpp_install_dir,
148 [ --with-cpp-install-dir=DIR
149 install the user visible C preprocessor in DIR
150 (relative to PREFIX) as well as PREFIX/bin],
151 [if test x$withval = xyes; then
152 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
153 elif test x$withval != xno; then
154 cpp_install_dir=$withval
157 # We would like to our source tree to be readonly. However when releases or
158 # pre-releases are generated, the flex/bison generated files as well as the
159 # various formats of manuals need to be included along with the rest of the
160 # sources. Therefore we have --enable-generated-files-in-srcdir to do
163 AC_MSG_CHECKING([whether to place generated files in the source directory])
164 dnl generated-files-in-srcdir is disabled by default
165 AC_ARG_ENABLE(generated-files-in-srcdir,
166 [ --enable-generated-files-in-srcdir
167 put copies of generated files in source dir
168 intended for creating source tarballs for users
169 without texinfo bison or flex.],
170 generated_files_in_srcdir=$enableval,
171 generated_files_in_srcdir=no)
173 AC_MSG_RESULT($generated_files_in_srcdir)
175 if test "$generated_files_in_srcdir" = "yes"; then
182 # -------------------
183 # Find default linker
184 # -------------------
188 [ --with-gnu-ld arrange to work with GNU ld.],
189 gnu_ld_flag="$with_gnu_ld",
192 # With pre-defined ld
194 [ --with-ld arrange to use the specified ld (full pathname)],
195 DEFAULT_LINKER="$with_ld")
196 if test x"${DEFAULT_LINKER+set}" = x"set"; then
197 if test ! -x "$DEFAULT_LINKER"; then
198 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
199 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
202 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
203 [Define to enable the use of a default linker.])
206 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
207 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
209 AC_MSG_CHECKING([whether a default linker was specified])
210 if test x"${DEFAULT_LINKER+set}" = x"set"; then
211 if test x"$gnu_ld_flag" = x"no"; then
212 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
214 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
220 # With demangler in GNU ld
221 AC_ARG_WITH(demangler-in-ld,
222 [ --with-demangler-in-ld try to use demangler in GNU ld.],
223 demangler_in_ld="$with_demangler_in_ld",
226 # ----------------------
227 # Find default assembler
228 # ----------------------
232 [ --with-gnu-as arrange to work with GNU as],
233 gas_flag="$with_gnu_as",
237 [ --with-as arrange to use the specified as (full pathname)],
238 DEFAULT_ASSEMBLER="$with_as")
239 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
240 if test ! -x "$DEFAULT_ASSEMBLER"; then
241 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
242 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
245 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
246 [Define to enable the use of a default assembler.])
249 gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
250 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
252 AC_MSG_CHECKING([whether a default assembler was specified])
253 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
254 if test x"$gas_flag" = x"no"; then
255 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
257 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
267 # If a non-executable a.out is present (e.g. created by GNU as above even if
268 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
269 # file, even when creating an executable, so an execution test fails.
270 # Remove possible default executable files to avoid this.
272 # FIXME: This really belongs into AC_PROG_CC and can be removed once
273 # Autoconf includes it.
274 rm -f a.out a.exe b.out
276 # Find the native compiler
280 ACX_PROG_GNAT([-I"$srcdir"/ada])
282 # autoconf is lame and doesn't give us any substitution variable for this.
283 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
284 NO_MINUS_C_MINUS_O=yes
286 OUTPUT_OPTION='-o $@'
288 AC_SUBST(NO_MINUS_C_MINUS_O)
289 AC_SUBST(OUTPUT_OPTION)
291 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
292 # optimizations to be activated explicitly by the toplevel.
295 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
299 # -------------------------
300 # Check C compiler features
301 # -------------------------
303 AC_USE_SYSTEM_EXTENSIONS
307 # sizeof(char) is 1 by definition.
308 AC_CHECK_SIZEOF(void *)
309 AC_CHECK_SIZEOF(short)
311 AC_CHECK_SIZEOF(long)
312 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
313 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
316 # ---------------------
317 # Warnings and checking
318 # ---------------------
320 # Check $CC warning features (if it's GCC).
321 # We want to use -pedantic, but we don't want warnings about
325 # So, we only use -pedantic if we can disable those warnings.
327 ACX_PROG_CC_WARNING_OPTS(
328 m4_quote(m4_do([-W -Wall -Wwrite-strings -Wcast-qual])), [loose_warn])
329 ACX_PROG_CC_WARNING_OPTS(
330 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
332 ACX_PROG_CC_WARNING_OPTS(
333 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
334 ACX_PROG_CC_WARNING_OPTS(
335 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
336 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
337 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
338 [-Wno-overlength-strings])), [strict_warn])
339 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
341 # The above macros do nothing if the compiler is not GCC. However, the
342 # Makefile has more goo to add other flags, so these variables are used
343 # to enable warnings only for GCC.
346 if test "x$GCC" = "xyes"; then
347 warn_cflags='$(GCC_WARN_CFLAGS)'
348 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
350 AC_SUBST(warn_cflags)
351 AC_SUBST(warn_cxxflags)
353 # Enable expensive internal checks
355 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
359 AC_ARG_ENABLE(checking,
360 [ --enable-checking[=LIST]
361 enable expensive run-time checks. With LIST,
362 enable only specific categories of checks.
363 Categories are: yes,no,all,none,release.
364 Flags are: assert,df,fold,gc,gcac,gimple,misc,
365 rtlflag,rtl,runtime,tree,valgrind,types.],
366 [ac_checking_flags="${enableval}"],[
367 # Determine the default checks.
368 if test x$is_release = x ; then
369 ac_checking_flags=yes
371 ac_checking_flags=release
373 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
374 for check in release $ac_checking_flags
377 # these set all the flags to specific states
378 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
379 ac_fold_checking= ; ac_gc_checking=1 ;
380 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
381 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
382 ac_tree_checking=1 ; ac_valgrind_checking= ;
383 ac_types_checking=1 ;;
384 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
385 ac_fold_checking= ; ac_gc_checking= ;
386 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
387 ac_rtlflag_checking= ; ac_runtime_checking= ;
388 ac_tree_checking= ; ac_valgrind_checking= ;
389 ac_types_checking= ;;
390 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
391 ac_fold_checking=1 ; ac_gc_checking=1 ;
392 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
393 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
394 ac_tree_checking=1 ; ac_valgrind_checking= ;
395 ac_types_checking=1 ;;
396 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
397 ac_fold_checking= ; ac_gc_checking= ;
398 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
399 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
400 ac_tree_checking= ; ac_valgrind_checking= ;
401 ac_types_checking= ;;
402 # these enable particular checks
403 assert) ac_assert_checking=1 ;;
404 df) ac_df_checking=1 ;;
405 fold) ac_fold_checking=1 ;;
406 gc) ac_gc_checking=1 ;;
407 gcac) ac_gc_always_collect=1 ;;
408 gimple) ac_gimple_checking=1 ;;
409 misc) ac_checking=1 ;;
410 rtl) ac_rtl_checking=1 ;;
411 rtlflag) ac_rtlflag_checking=1 ;;
412 runtime) ac_runtime_checking=1 ;;
413 tree) ac_tree_checking=1 ;;
414 types) ac_types_checking=1 ;;
415 valgrind) ac_valgrind_checking=1 ;;
416 *) AC_MSG_ERROR(unknown check category $check) ;;
422 if test x$ac_checking != x ; then
423 AC_DEFINE(ENABLE_CHECKING, 1,
424 [Define if you want more run-time sanity checks. This one gets a grab
425 bag of miscellaneous but relatively cheap checks.])
426 nocommon_flag=-fno-common
428 AC_SUBST(nocommon_flag)
429 if test x$ac_df_checking != x ; then
430 AC_DEFINE(ENABLE_DF_CHECKING, 1,
431 [Define if you want more run-time sanity checks for dataflow.])
433 if test x$ac_assert_checking != x ; then
434 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
435 [Define if you want assertions enabled. This is a cheap check.])
437 if test x$ac_gimple_checking != x ; then
438 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
439 [Define if you want operations on GIMPLE (the basic data structure of
440 the high-level optimizers) to be checked for dynamic type safety at
441 runtime. This is moderately expensive.])
443 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
444 if test x$ac_runtime_checking != x ; then
445 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
446 [Define if you want runtime assertions enabled. This is a cheap check.])
448 if test x$ac_tree_checking != x ; then
449 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
450 [Define if you want all operations on trees (the basic data
451 structure of the front ends) to be checked for dynamic type safety
452 at runtime. This is moderately expensive. The tree browser debugging
453 routines will also be enabled by this option.
455 TREEBROWSER=tree-browser.o
457 if test x$ac_types_checking != x ; then
458 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
459 [Define if you want all gimple types to be verified after gimplifiation.
463 AC_SUBST(TREEBROWSER)
464 if test x$ac_rtl_checking != x ; then
465 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
466 [Define if you want all operations on RTL (the basic data structure
467 of the optimizer and back end) to be checked for dynamic type safety
468 at runtime. This is quite expensive.])
470 if test x$ac_rtlflag_checking != x ; then
471 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
472 [Define if you want RTL flag accesses to be checked against the RTL
473 codes that are supported for each access macro. This is relatively
476 if test x$ac_gc_checking != x ; then
477 AC_DEFINE(ENABLE_GC_CHECKING, 1,
478 [Define if you want the garbage collector to do object poisoning and
479 other memory allocation checks. This is quite expensive.])
481 if test x$ac_gc_always_collect != x ; then
482 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
483 [Define if you want the garbage collector to operate in maximally
484 paranoid mode, validating the entire heap and collecting garbage at
485 every opportunity. This is extremely expensive.])
487 if test x$ac_fold_checking != x ; then
488 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
489 [Define if you want fold checked that it never destructs its argument.
490 This is quite expensive.])
492 valgrind_path_defines=
495 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
496 dnl # an if statement. This was the source of very frustrating bugs
497 dnl # in converting to autoconf 2.5x!
498 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
500 if test x$ac_valgrind_checking != x ; then
501 # It is certainly possible that there's valgrind but no valgrind.h.
502 # GCC relies on making annotations so we must have both.
503 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
504 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
505 [[#include <valgrind/memcheck.h>
506 #ifndef VALGRIND_DISCARD
507 #error VALGRIND_DISCARD not defined
509 [gcc_cv_header_valgrind_memcheck_h=yes],
510 [gcc_cv_header_valgrind_memcheck_h=no])
511 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
512 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
513 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
514 [[#include <memcheck.h>
515 #ifndef VALGRIND_DISCARD
516 #error VALGRIND_DISCARD not defined
518 [gcc_cv_header_memcheck_h=yes],
519 [gcc_cv_header_memcheck_h=no])
520 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
521 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
522 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
523 if test "x$valgrind_path" = "x" \
524 || (test $have_valgrind_h = no \
525 && test $gcc_cv_header_memcheck_h = no \
526 && test $gcc_cv_header_valgrind_memcheck_h = no); then
527 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
529 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
530 valgrind_command="$valgrind_path -q"
531 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
532 [Define if you want to run subprograms and generated programs
533 through valgrind (a memory checker). This is extremely expensive.])
534 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
535 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
536 [Define if valgrind's valgrind/memcheck.h header is installed.])
538 if test $gcc_cv_header_memcheck_h = yes; then
539 AC_DEFINE(HAVE_MEMCHECK_H, 1,
540 [Define if valgrind's memcheck.h header is installed.])
543 AC_SUBST(valgrind_path_defines)
544 AC_SUBST(valgrind_command)
546 # Enable code coverage collection
547 AC_ARG_ENABLE(coverage,
548 [ --enable-coverage[=LEVEL]
549 enable compiler's code coverage collection.
550 Use to measure compiler performance and locate
551 unused parts of the compiler. With LEVEL, specify
552 optimization. Values are opt, noopt,
554 [case "${enableval}" in
556 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
559 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
562 # a.k.a. --disable-coverage
566 AC_MSG_ERROR(unknown coverage setting $enableval)
570 AC_SUBST(coverage_flags)
572 AC_ARG_ENABLE(gather-detailed-mem-stats,
573 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
574 [enable_gather_detailed_mem_stats=no])
575 if test x$enable_gather_detailed_mem_stats = xyes ; then
576 AC_DEFINE(GATHER_STATISTICS, 1,
577 [Define to enable detailed memory allocation stats gathering.])
580 # -------------------------------
581 # Miscenalleous configure options
582 # -------------------------------
584 # See if we are building gcc with C++.
585 AC_ARG_ENABLE(build-with-cxx,
586 [ --enable-build-with-cxx build with C++ compiler instead of C compiler],
587 ENABLE_BUILD_WITH_CXX=$enableval,
588 ENABLE_BUILD_WITH_CXX=no)
589 AC_SUBST(ENABLE_BUILD_WITH_CXX)
593 [ --with-stabs arrange to use stabs instead of host debug format],
597 # Determine whether or not multilibs are enabled.
598 AC_ARG_ENABLE(multilib,
599 [ --enable-multilib enable library support for multiple ABIs],
600 [], [enable_multilib=yes])
601 AC_SUBST(enable_multilib)
603 # Enable __cxa_atexit for C++.
604 AC_ARG_ENABLE(__cxa_atexit,
605 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
608 # Enable C extension for decimal float if target supports it.
609 AC_ARG_ENABLE(decimal-float,
610 [ --enable-decimal-float={no,yes,bid,dpd}
611 enable decimal float extension to C. Selecting 'bid'
612 or 'dpd' choses which decimal floating point format
615 case $enable_decimal_float in
616 yes | no | bid | dpd) ;;
617 *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
618 Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
623 powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
624 enable_decimal_float=yes
627 AC_MSG_WARN(decimal float is not supported for this target, ignored)
628 enable_decimal_float=no
633 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
634 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
635 [Define to 1 to enable decimal float extension to C.])
637 # x86's use BID format instead of DPD
638 case x$enable_decimal_float in
641 i?86*-*-linux* | x86_64*-*-linux*)
642 enable_decimal_float=bid
645 enable_decimal_float=dpd
650 # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
651 # dependency on libdecnumber.
652 enable_decimal_float=dpd
655 AC_SUBST(enable_decimal_float)
657 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
658 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
659 [Define to 1 to specify that we are using the BID decimal floating
660 point format instead of DPD])
662 # Enable C extension for fixed-point arithmetic.
663 AC_ARG_ENABLE(fixed-point,
664 [ --enable-fixed-point enable fixed-point arithmetic extension to C],
672 AC_MSG_WARN(fixed-point is not supported on IRIX, ignored)
673 enable_fixed_point=no
676 enable_fixed_point=yes
681 AC_MSG_WARN(fixed-point is not supported for this target, ignored)
682 enable_fixed_point=no
686 AC_SUBST(enable_fixed_point)
688 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
689 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
690 [Define to 1 to enable fixed-point arithmetic extension to C.])
693 # Pass with no value to take the default
694 # Pass with a value to specify a thread package
695 AC_ARG_ENABLE(threads,
696 [ --enable-threads enable thread usage for target GCC
697 --enable-threads=LIB use LIB thread package for target GCC],,
701 [ --enable-tls enable or disable generation of tls code
702 overriding the assembler check for tls support],
706 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
707 Valid choices are 'yes' and 'no'.]) ;;
711 AC_ARG_ENABLE(objc-gc,
712 [ --enable-objc-gc enable the use of Boehm's garbage collector with
713 the GNU Objective-C runtime],
714 if test x$enable_objc_gc = xno; then
722 [ --with-dwarf2 force the default debug format to be DWARF 2],
723 dwarf2="$with_dwarf2",
726 AC_ARG_ENABLE(shared,
727 [ --disable-shared don't provide a shared libgcc],
729 case $enable_shared in
733 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
734 for pkg in $enableval; do
735 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
742 ], [enable_shared=yes])
743 AC_SUBST(enable_shared)
745 AC_ARG_WITH(build-sysroot,
746 [ --with-build-sysroot=sysroot
747 use sysroot as the system root during the build])
750 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
752 case ${with_sysroot} in
753 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
754 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
757 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
758 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
760 if test "x$prefix" = xNONE; then
761 test_prefix=/usr/local
765 if test "x$exec_prefix" = xNONE; then
766 test_exec_prefix=$test_prefix
768 test_exec_prefix=$exec_prefix
770 case ${TARGET_SYSTEM_ROOT} in
771 "${test_prefix}"|"${test_prefix}/"*|\
772 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
773 '${prefix}'|'${prefix}/'*|\
774 '${exec_prefix}'|'${exec_prefix}/'*)
775 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
776 TARGET_SYSTEM_ROOT_DEFINE="$t"
781 TARGET_SYSTEM_ROOT_DEFINE=
782 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
784 AC_SUBST(TARGET_SYSTEM_ROOT)
785 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
786 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
788 # Build with intermodule optimisations
789 AC_ARG_ENABLE(intermodule,
790 [ --enable-intermodule build the compiler in one step],
791 [case ${enable_intermodule} in
792 yes) onestep="-onestep";;
798 ACX_PKGVERSION([GCC])
799 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
801 # Sanity check enable_languages in case someone does not run the toplevel
802 # configure # script.
803 AC_ARG_ENABLE(languages,
804 [ --enable-languages=LIST specify which front-ends to build],
805 [case ,${enable_languages}, in
807 # go safe -- we cannot be much sure without the toplevel
809 # analysis of which target libs are present and usable
813 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
818 enable_languages=c,${enable_languages}
821 [enable_languages=c])
823 AC_ARG_WITH(multilib-list,
824 [ --with-multilib-list Select multilibs (SH only)],
826 with_multilib_list=default)
828 # -------------------------
829 # Checks for other programs
830 # -------------------------
834 # Find some useful tools
836 # We need awk to create options.c and options.h.
837 # Bail out if it's missing.
839 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
847 # By default, the Darwin ranlib will not treat common symbols as
848 # definitions when building the archive table of contents. Other
849 # ranlibs do that; pass an option to the Darwin ranlib that makes
850 # it behave similarly.
856 AC_SUBST(ranlib_flags)
860 # See if cmp has --ignore-initial.
861 gcc_AC_PROG_CMP_IGNORE_INITIAL
863 # See if we have the mktemp command.
864 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
866 # See if makeinfo has been installed and is modern enough
867 # that we can use it.
868 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
869 [GNU texinfo.* \([0-9][0-9.]*\)],
870 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
871 if test $gcc_cv_prog_makeinfo_modern = no; then
873 *** Makeinfo is missing or too old.
874 *** Info documentation will not be built.])
881 # Is pod2man recent enough to regenerate manpages?
882 AC_MSG_CHECKING([for recent Pod::Man])
883 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
885 GENERATED_MANPAGES=generated-manpages
890 AC_SUBST(GENERATED_MANPAGES)
892 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
895 dnl Don't use AC_PROG_LEX; we insist on flex.
896 dnl LEXLIB is not useful in gcc.
897 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
900 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
902 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
903 # check for build == host before using them.
906 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
907 && test -d ../binutils ; then
908 NM='$(objdir)/../binutils/nm-new'
910 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
914 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
915 && test -d ../binutils ; then
916 AR='$(objdir)/../binutils/ar'
918 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
922 # --------------------
923 # Checks for C headers
924 # --------------------
926 # Need to reject headers which give warnings, so that the -Werror bootstrap
927 # works later. *sigh* This needs to come before all header checks.
934 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
935 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
936 sys/resource.h sys/param.h sys/times.h sys/stat.h \
937 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
939 # Check for thread headers.
940 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
941 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
943 # These tests can't be done till we know if we have limits.h.
952 # These libraries may be used by collect2.
953 # We may need a special search path to get them linked.
954 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
956 for libs in '' -lld -lmld \
957 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
958 '-L/usr/lib/cmplrs/cc3.11 -lmld'
961 AC_TRY_LINK_FUNC(ldopen,
962 [gcc_cv_collect2_libs="$libs"; break])
965 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
966 case $gcc_cv_collect2_libs in
968 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
970 AC_SUBST(COLLECT2_LIBS)
972 # When building Ada code on Alpha, we need exc_resume which is usually in
973 # -lexc. So test for it.
976 AC_SEARCH_LIBS(exc_resume, exc)
979 AC_SUBST(GNAT_LIBEXC)
981 # Some systems put ldexp and frexp in libm instead of libc; assume
982 # they're both in the same place. jcf-dump needs them.
985 AC_SEARCH_LIBS(ldexp, m)
990 # Use <inttypes.h> only if it exists,
991 # doesn't clash with <sys/types.h>, and declares intmax_t.
992 AC_MSG_CHECKING(for inttypes.h)
993 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
994 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
995 [[#include <sys/types.h>
996 #include <inttypes.h>]],
997 [[intmax_t i = -1;]])],
998 [gcc_cv_header_inttypes_h=yes],
999 [gcc_cv_header_inttypes_h=no])])
1000 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1001 if test $gcc_cv_header_inttypes_h = yes; then
1002 AC_DEFINE(HAVE_INTTYPES_H, 1,
1003 [Define if you have a working <inttypes.h> header file.])
1006 dnl Disabled until we have a complete test for buggy enum bitfields.
1007 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1009 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1010 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1011 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1012 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1013 putchar_unlocked putc_unlocked)
1014 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1015 sysconf strsignal getrusage nl_langinfo \
1016 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1019 if test x$ac_cv_func_mbstowcs = xyes; then
1020 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1021 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1027 [gcc_cv_func_mbstowcs_works=yes],
1028 [gcc_cv_func_mbstowcs_works=no],
1029 [gcc_cv_func_mbstowcs_works=yes])])
1030 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1031 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1032 [Define this macro if mbstowcs does not crash when its
1033 first argument is NULL.])
1037 AC_CHECK_TYPE(ssize_t, int)
1038 AC_CHECK_TYPE(caddr_t, char *)
1040 gcc_AC_FUNC_MMAP_BLACKLIST
1044 # Under VMS, vfork works very differently than on Unix. The standard test
1045 # won't work, and it isn't easily adaptable. It makes more sense to
1047 ac_cv_func_vfork_works=yes
1053 # Until we have in-tree GNU iconv:
1055 AC_SUBST(LIBICONV_DEP)
1061 # We will need to find libiberty.h and ansidecl.h
1062 saved_CFLAGS="$CFLAGS"
1063 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1064 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1065 strsignal strstr strverscmp \
1066 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1067 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1068 #include "ansidecl.h"
1069 #include "system.h"])
1071 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1072 #include "ansidecl.h"
1074 #ifdef HAVE_SYS_RESOURCE_H
1075 #include <sys/resource.h>
1079 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1080 #include "ansidecl.h"
1082 #ifdef HAVE_SYS_RESOURCE_H
1083 #include <sys/resource.h>
1085 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1086 [Define to `long' if <sys/resource.h> doesn't define.])])
1088 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1089 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1090 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1091 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1092 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1093 #include "ansidecl.h"
1102 gcc_AC_CHECK_DECLS(times, , ,[
1103 #include "ansidecl.h"
1105 #ifdef HAVE_SYS_TIMES_H
1106 #include <sys/times.h>
1110 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1111 #include "ansidecl.h"
1116 # More time-related stuff.
1117 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1118 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1119 #include "ansidecl.h"
1121 #ifdef HAVE_SYS_TIMES_H
1122 #include <sys/times.h>
1124 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1125 if test $ac_cv_struct_tms = yes; then
1126 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1127 [Define if <sys/times.h> defines struct tms.])
1130 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1131 # revisit after autoconf 2.50.
1132 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1133 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1134 #include "ansidecl.h"
1136 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1137 if test $gcc_cv_type_clock_t = yes; then
1138 AC_DEFINE(HAVE_CLOCK_T, 1,
1139 [Define if <time.h> defines clock_t.])
1142 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1143 CFLAGS="$saved_CFLAGS"
1145 gcc_AC_INITFINI_ARRAY
1147 # mkdir takes a single argument on some systems.
1148 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1156 # With Setjmp/Longjmp based exception handling.
1157 AC_ARG_ENABLE(sjlj-exceptions,
1158 [ --enable-sjlj-exceptions
1159 arrange to use setjmp/longjmp exception handling],
1162 if test $enableval != yes; then
1163 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1168 force_sjlj_exceptions=yes],
1171 force_sjlj_exceptions=yes
1175 force_sjlj_exceptions=no
1178 if test $force_sjlj_exceptions = yes; then
1179 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1180 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1181 [Define 0/1 to force the choice for exception handling model.])
1184 # For platforms with the unwind ABI which includes an unwind library,
1185 # libunwind, we can choose to use the system libunwind.
1186 # config.gcc also contains tests of with_system_libunwind.
1187 GCC_CHECK_UNWIND_GETIPINFO
1189 # --------------------------------------------------------
1190 # Build, host, and target specific configuration fragments
1191 # --------------------------------------------------------
1193 # Collect build-machine-specific information.
1194 . ${srcdir}/config.build
1196 # Collect host-machine-specific information.
1197 . ${srcdir}/config.host
1201 # Collect target-machine-specific information.
1202 . ${srcdir}/config.gcc
1204 extra_objs="${host_extra_objs} ${extra_objs}"
1205 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1207 # Default the target-machine variables that were not explicitly set.
1208 if test x"$tm_file" = x
1209 then tm_file=$cpu_type/$cpu_type.h; fi
1211 if test x"$extra_headers" = x
1212 then extra_headers=; fi
1214 if test x$md_file = x
1215 then md_file=$cpu_type/$cpu_type.md; fi
1217 if test x$out_file = x
1218 then out_file=$cpu_type/$cpu_type.c; fi
1220 if test x"$tmake_file" = x
1221 then tmake_file=$cpu_type/t-$cpu_type
1224 if test x"$dwarf2" = xyes
1225 then tm_file="$tm_file tm-dwarf2.h"
1228 # Say what files are being used for the output code and MD file.
1229 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1230 echo "Using \`$srcdir/config/$md_file' as machine description file."
1232 # If any of the xm_file variables contain nonexistent files, warn
1233 # about them and drop them.
1236 for x in $build_xm_file; do
1237 if test -f $srcdir/config/$x
1239 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1245 for x in $host_xm_file; do
1246 if test -f $srcdir/config/$x
1248 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1254 for x in $xm_file; do
1255 if test -f $srcdir/config/$x
1257 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1263 for f in $tm_file; do
1266 if test $count = ax; then
1267 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1269 echo "Using the following target machine macro files:"
1270 for f in $tm_file; do
1271 echo " $srcdir/config/$f"
1275 if test x$need_64bit_hwint = xyes; then
1276 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1277 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1280 if test x$use_long_long_for_widest_fast_int = xyes; then
1281 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1282 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1283 efficiently supported by the host hardware.])
1287 for f in $host_xm_file; do
1290 if test $count = a; then
1292 elif test $count = ax; then
1293 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1295 echo "Using the following host machine macro files:"
1296 for f in $host_xm_file; do
1297 echo " $srcdir/config/$f"
1300 echo "Using ${out_host_hook_obj} for host machine hooks."
1302 if test "$host_xm_file" != "$build_xm_file"; then
1304 for f in $build_xm_file; do
1307 if test $count = a; then
1309 elif test $count = ax; then
1310 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1312 echo "Using the following build machine macro files:"
1313 for f in $build_xm_file; do
1314 echo " $srcdir/config/$f"
1321 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1322 gcc_cv_mcontext_underscores,
1324 #include <sys/cdefs.h>
1325 #include <sys/signal.h>
1326 #include <ucontext.h>
1327 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1329 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1330 if test $gcc_cv_mcontext_underscores = yes; then
1331 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1332 [mcontext_t fields start with __])
1341 # Check if a valid thread package
1342 case ${enable_threads} in
1345 target_thread_file='single'
1349 target_thread_file='single'
1351 aix | dce | gnat | irix | posix | posix95 | rtems | \
1352 single | solaris | vxworks | win32 | mipssde)
1353 target_thread_file=${enable_threads}
1356 echo "${enable_threads} is an unknown thread package" 1>&2
1361 if test x${thread_file} = x; then
1362 # No thread file set by target-specific clauses in config.gcc,
1363 # so use file chosen by default logic above
1364 thread_file=${target_thread_file}
1367 # Make gthr-default.h if we have a thread file.
1369 if test $thread_file != single; then
1370 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1371 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1372 rm -f gthr-default.h-t
1374 mv -f gthr-default.h-t gthr-default.h
1376 gthread_flags=-DHAVE_GTHR_DEFAULT
1378 AC_SUBST(gthread_flags)
1385 if test x$enable___cxa_atexit = xyes || \
1386 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1387 if test x$host = x$target; then
1389 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1390 # keyed to flag_use_cxa_atexit
1395 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1396 [echo "__cxa_atexit can't be enabled on this target"])
1400 # We can't check for __cxa_atexit when building a cross, so assume
1404 if test x$use_cxa_atexit = xyes; then
1405 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1406 [Define if you want to use __cxa_atexit, rather than atexit, to
1407 register C++ destructors for local statics and global objects.
1408 This is essential for fully standards-compliant handling of
1409 destructors, but requires __cxa_atexit in libc.])
1413 # Look for a file containing extra machine modes.
1414 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1415 extra_modes_file='$(srcdir)'/config/${extra_modes}
1416 AC_SUBST(extra_modes_file)
1417 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1418 [Define to the name of a file containing a list of extra machine modes
1419 for this architecture.])
1422 # Convert extra_options into a form suitable for Makefile use.
1424 for f in $extra_options; do
1425 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1427 AC_SUBST(extra_opt_files)
1429 # auto-host.h is the file containing items generated by autoconf and is
1430 # the first file included by config.h.
1431 # If host=build, it is correct to have bconfig include auto-host.h
1432 # as well. If host!=build, we are in error and need to do more
1433 # work to find out the build config parameters.
1434 if test x$host = x$build
1436 build_auto=auto-host.h
1438 # We create a subdir, then run autoconf in the subdir.
1439 # To prevent recursion we set host and build for the new
1440 # invocation of configure to the build for this invocation
1447 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1448 *) realsrcdir=../${srcdir};;
1450 saved_CFLAGS="${CFLAGS}"
1451 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1452 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1453 ${realsrcdir}/configure \
1454 --enable-languages=${enable_languages-all} \
1455 --target=$target_alias --host=$build_alias --build=$build_alias
1456 CFLAGS="${saved_CFLAGS}"
1458 # We just finished tests for the build machine, so rename
1459 # the file auto-build.h in the gcc directory.
1460 mv auto-host.h ../auto-build.h
1463 build_auto=auto-build.h
1465 AC_SUBST(build_subdir)
1467 tm_file="${tm_file} defaults.h"
1468 tm_p_file="${tm_p_file} tm-preds.h"
1469 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1470 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1471 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1472 # put this back in temporarily.
1473 xm_file="auto-host.h ansidecl.h ${xm_file}"
1480 # Compile in configure arguments.
1481 if test -f configargs.h ; then
1482 # Being re-configured.
1483 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1484 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1486 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1489 # Double all backslashes and backslash all quotes to turn
1490 # gcc_config_arguments into a C string.
1491 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1492 $gcc_config_arguments
1494 gcc_config_arguments_str=`cat conftest.out`
1497 cat > configargs.h <<EOF
1498 /* Generated automatically. */
1499 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1500 static const char thread_model[] = "$thread_file";
1502 static const struct {
1503 const char *name, *value;
1504 } configure_default_options[] = $configure_default_options;
1509 gcc_BASEVER=`cat $srcdir/BASE-VER`
1510 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1511 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1512 if test -f $srcdir/REVISION ; then
1513 gcc_REVISION=`cat $srcdir/REVISION`
1517 cat > plugin-version.h <<EOF
1518 #include "configargs.h"
1520 static char basever[] = "$gcc_BASEVER";
1521 static char datestamp[] = "$gcc_DATESTAMP";
1522 static char devphase[] = "$gcc_DEVPHASE";
1523 static char revision[] = "$gcc_REVISION";
1525 /* FIXME plugins: We should make the version information more precise.
1526 One way to do is to add a checksum. */
1528 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1530 configuration_arguments};
1534 # Internationalization
1535 ZW_GNU_GETTEXT_SISTER_DIR
1537 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1538 # -liconv on the link line twice.
1539 case "$LIBINTL" in *$LIBICONV*)
1543 AC_ARG_ENABLE(secureplt,
1544 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1548 [ --enable-cld enable -mcld by default for 32bit x86], [],
1551 # Windows32 Registry support for specifying GCC installation paths.
1552 AC_ARG_ENABLE(win32-registry,
1553 [ --disable-win32-registry
1554 disable lookup of installation paths in the
1555 Registry on Windows hosts
1556 --enable-win32-registry enable registry lookup (default)
1557 --enable-win32-registry=KEY
1558 use KEY instead of GCC version as the last portion
1559 of the registry key],,)
1562 win32 | pe | cygwin* | mingw32* | uwin*)
1563 if test "x$enable_win32_registry" != xno; then
1564 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1567 if test "x$enable_win32_registry" != xno; then
1568 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1569 [Define to 1 if installation paths should be looked up in the Windows
1570 Registry. Ignored on non-Windows hosts.])
1572 if test "x$enable_win32_registry" != xyes \
1573 && test "x$enable_win32_registry" != x; then
1574 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1575 [Define to be the last component of the Windows registry key under which
1576 to look for installation paths. The full key used will be
1577 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1578 The default is the GCC version number.])
1584 # Get an absolute path to the GCC top-level source directory
1585 holddir=`${PWDCMD-pwd}`
1587 topdir=`${PWDCMD-pwd}`
1590 # Conditionalize the makefile for this host machine.
1592 for f in ${host_xmake_file}
1594 if test -f ${srcdir}/config/$f
1596 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1600 # Conditionalize the makefile for this target machine.
1602 for f in ${tmake_file}
1604 if test -f ${srcdir}/config/$f
1606 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1609 tmake_file="${tmake_file_}"
1611 out_object_file=`basename $out_file .c`.o
1613 tm_file_list="options.h"
1614 tm_include_list="options.h"
1615 for f in $tm_file; do
1618 f=`echo $f | sed 's/^..//'`
1619 tm_file_list="${tm_file_list} $f"
1620 tm_include_list="${tm_include_list} $f"
1623 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1624 tm_include_list="${tm_include_list} $f"
1627 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1628 tm_include_list="${tm_include_list} config/$f"
1635 for f in $tm_p_file; do
1638 tm_p_file_list="${tm_p_file_list} $f"
1639 tm_p_include_list="${tm_p_include_list} $f"
1642 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1643 tm_p_include_list="${tm_p_include_list} config/$f"
1649 for f in $xm_file; do
1652 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1653 xm_include_list="${xm_include_list} $f"
1656 xm_file_list="${xm_file_list} $f"
1657 xm_include_list="${xm_include_list} $f"
1660 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1661 xm_include_list="${xm_include_list} config/$f"
1667 host_xm_include_list=
1668 for f in $host_xm_file; do
1671 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1672 host_xm_include_list="${host_xm_include_list} $f"
1675 host_xm_file_list="${host_xm_file_list} $f"
1676 host_xm_include_list="${host_xm_include_list} $f"
1679 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1680 host_xm_include_list="${host_xm_include_list} config/$f"
1686 for f in $build_xm_file; do
1689 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1690 build_xm_include_list="${build_xm_include_list} $f"
1692 auto-build.h | auto-host.h )
1693 build_xm_file_list="${build_xm_file_list} $f"
1694 build_xm_include_list="${build_xm_include_list} $f"
1697 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1698 build_xm_include_list="${build_xm_include_list} config/$f"
1703 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1704 # cross-compiler which does not use the native headers and libraries.
1705 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1706 CROSS= AC_SUBST(CROSS)
1707 ALL=all.internal AC_SUBST(ALL)
1708 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1710 if test "x$with_build_sysroot" != x; then
1711 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1713 # This value is used, even on a native system, because
1714 # CROSS_SYSTEM_HEADER_DIR is just
1715 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1716 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1719 if test x$host != x$target
1721 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1723 SYSTEM_HEADER_DIR=$build_system_header_dir
1724 case "$host","$target" in
1725 # Darwin crosses can use the host system's libraries and headers,
1726 # because of the fat library support. Of course, it must be the
1727 # same version of Darwin on both sides. Allow the user to
1728 # just say --target=foo-darwin without a version number to mean
1729 # "the version on this system".
1730 *-*-darwin*,*-*-darwin*)
1731 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1732 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1733 if test $hostos = $targetos -o $targetos = darwin ; then
1735 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1740 i?86-*-*,x86_64-*-* \
1741 | powerpc*-*-*,powerpc64*-*-*)
1742 CROSS="$CROSS -DNATIVE_CROSS" ;;
1744 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1745 SYSTEM_HEADER_DIR=$build_system_header_dir
1748 # If this is a cross-compiler that does not
1749 # have its own set of headers then define
1752 # If this is using newlib, without having the headers available now,
1753 # then define inhibit_libc in LIBGCC2_CFLAGS.
1754 # This prevents libgcc2 from containing any code which requires libc
1756 : ${inhibit_libc=false}
1757 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1758 test x$with_newlib = xyes ; } &&
1759 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1762 AC_SUBST(inhibit_libc)
1764 # When building gcc with a cross-compiler, we need to adjust things so
1765 # that the generator programs are still built with the native compiler.
1766 # Also, we cannot run fixincludes.
1768 # These are the normal (build=host) settings:
1769 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1770 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1771 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1772 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1774 # And these apply if build != host, or we are generating coverage data
1775 if test x$build != x$host || test "x$coverage_flags" != x
1777 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1778 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1781 # Expand extra_headers to include complete path.
1782 # This substitutes for lots of t-* files.
1784 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1785 for file in ${extra_headers} ; do
1786 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1789 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1790 if test x"$use_gcc_tgmath" = xyes
1791 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1794 # Define collect2 in Makefile.
1795 case $host_can_use_collect2 in
1797 *) collect2='collect2$(exeext)' ;;
1799 AC_SUBST([collect2])
1801 # Add a definition of USE_COLLECT2 if system wants one.
1802 case $use_collect2 in
1803 no) use_collect2= ;;
1806 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1807 xm_defines="${xm_defines} USE_COLLECT2"
1808 case $host_can_use_collect2 in
1810 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1816 # ---------------------------
1817 # Assembler & linker features
1818 # ---------------------------
1820 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1821 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1822 # However when ld-new is first executed from the build tree, libtool will
1823 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1824 # to the build tree. While doing this we need to use the previous-stage
1825 # linker, or we have an infinite loop. The presence of a shell script as
1826 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1827 # the gcc/collect-ld script. So we need to know how libtool works, or
1828 # exec-tool will fail.
1830 m4_defun([_LT_CONFIG_COMMANDS], [])
1833 AC_SUBST(enable_fast_install)
1835 # Identify the assembler which will work hand-in-glove with the newly
1836 # built GCC, so that we can examine its features. This is the assembler
1837 # which will be driven by the driver program.
1839 # If build != host, and we aren't building gas in-tree, we identify a
1840 # build->target assembler and hope that it will have the same features
1841 # as the host->target assembler we'll be using.
1842 gcc_cv_gas_major_version=
1843 gcc_cv_gas_minor_version=
1844 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1846 m4_pattern_allow([AS_FOR_TARGET])dnl
1847 AS_VAR_SET_IF(gcc_cv_as,, [
1848 if test -x "$DEFAULT_ASSEMBLER"; then
1849 gcc_cv_as="$DEFAULT_ASSEMBLER"
1850 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1851 && test -f ../gas/Makefile \
1852 && test x$build = x$host; then
1853 gcc_cv_as=../gas/as-new$build_exeext
1854 elif test -x as$build_exeext; then
1855 # Build using assembler in the current directory.
1856 gcc_cv_as=./as$build_exeext
1857 elif test -x $AS_FOR_TARGET; then
1858 gcc_cv_as="$AS_FOR_TARGET"
1860 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1863 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1864 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1865 case "$ORIGINAL_AS_FOR_TARGET" in
1866 ./as | ./as$build_exeext) ;;
1867 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1870 AC_MSG_CHECKING(what assembler to use)
1871 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1872 # Single tree build which includes gas. We want to prefer it
1873 # over whatever linker top-level may have detected, since
1874 # we'll use what we're building after installation anyway.
1875 AC_MSG_RESULT(newly built gas)
1877 _gcc_COMPUTE_GAS_VERSION
1878 in_tree_gas_is_elf=no
1879 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1880 || (grep 'obj_format = multi' ../gas/Makefile \
1881 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1883 in_tree_gas_is_elf=yes
1886 AC_MSG_RESULT($gcc_cv_as)
1890 # Identify the linker which will work hand-in-glove with the newly
1891 # built GCC, so that we can examine its features. This is the linker
1892 # which will be driven by the driver program.
1894 # If build != host, and we aren't building gas in-tree, we identify a
1895 # build->target linker and hope that it will have the same features
1896 # as the host->target linker we'll be using.
1897 gcc_cv_gld_major_version=
1898 gcc_cv_gld_minor_version=
1899 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1900 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1902 AS_VAR_SET_IF(gcc_cv_ld,, [
1903 if test -x "$DEFAULT_LINKER"; then
1904 gcc_cv_ld="$DEFAULT_LINKER"
1905 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1906 && test -f ../ld/Makefile \
1907 && test x$build = x$host; then
1908 gcc_cv_ld=../ld/ld-new$build_exeext
1909 elif test -x collect-ld$build_exeext; then
1910 # Build using linker in the current directory.
1911 gcc_cv_ld=./collect-ld$build_exeext
1912 elif test -x $LD_FOR_TARGET; then
1913 gcc_cv_ld="$LD_FOR_TARGET"
1915 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1918 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1919 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1920 case "$ORIGINAL_LD_FOR_TARGET" in
1921 ./collect-ld | ./collect-ld$build_exeext) ;;
1922 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1925 AC_MSG_CHECKING(what linker to use)
1926 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1927 # Single tree build which includes ld. We want to prefer it
1928 # over whatever linker top-level may have detected, since
1929 # we'll use what we're building after installation anyway.
1930 AC_MSG_RESULT(newly built ld)
1932 in_tree_ld_is_elf=no
1933 if (grep 'EMUL = .*elf' ../ld/Makefile \
1934 || grep 'EMUL = .*linux' ../ld/Makefile \
1935 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1936 in_tree_ld_is_elf=yes
1938 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
1941 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1942 if test x$gcc_cv_gld_version != x; then
1946 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1947 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1950 AC_MSG_RESULT($gcc_cv_ld)
1954 # Figure out what nm we will be using.
1955 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1956 AS_VAR_SET_IF(gcc_cv_nm,, [
1957 if test -f $gcc_cv_binutils_srcdir/configure.in \
1958 && test -f ../binutils/Makefile \
1959 && test x$build = x$host; then
1960 gcc_cv_nm=../binutils/nm-new$build_exeext
1961 elif test -x nm$build_exeext; then
1962 gcc_cv_nm=./nm$build_exeext
1963 elif test -x $NM_FOR_TARGET; then
1964 gcc_cv_nm="$NM_FOR_TARGET"
1966 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1969 AC_MSG_CHECKING(what nm to use)
1970 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1971 # Single tree build which includes binutils.
1972 AC_MSG_RESULT(newly built nm)
1975 AC_MSG_RESULT($gcc_cv_nm)
1979 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1980 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1981 case "$ORIGINAL_NM_FOR_TARGET" in
1982 ./nm | ./nm$build_exeext) ;;
1983 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
1987 # Figure out what objdump we will be using.
1988 AS_VAR_SET_IF(gcc_cv_objdump,, [
1989 if test -f $gcc_cv_binutils_srcdir/configure.in \
1990 && test -f ../binutils/Makefile \
1991 && test x$build = x$host; then
1992 # Single tree build which includes binutils.
1993 gcc_cv_objdump=../binutils/objdump$build_exeext
1994 elif test -x objdump$build_exeext; then
1995 gcc_cv_objdump=./objdump$build_exeext
1996 elif test -x $OBJDUMP_FOR_TARGET; then
1997 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
1999 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2002 AC_MSG_CHECKING(what objdump to use)
2003 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2004 # Single tree build which includes binutils.
2005 AC_MSG_RESULT(newly built objdump)
2006 elif test x$gcc_cv_objdump = x; then
2007 AC_MSG_RESULT(not found)
2009 AC_MSG_RESULT($gcc_cv_objdump)
2012 # Figure out what readelf we will be using.
2013 AS_VAR_SET_IF(gcc_cv_readelf,, [
2014 if test -f $gcc_cv_binutils_srcdir/configure.in \
2015 && test -f ../binutils/Makefile \
2016 && test x$build = x$host; then
2017 # Single tree build which includes binutils.
2018 gcc_cv_readelf=../binutils/readelf$build_exeext
2019 elif test -x readelf$build_exeext; then
2020 gcc_cv_readelf=./readelf$build_exeext
2022 AC_PATH_PROG(gcc_cv_readelf, readelf)
2025 AC_MSG_CHECKING(what readelf to use)
2026 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2027 # Single tree build which includes binutils.
2028 AC_MSG_RESULT(newly built readelf)
2029 elif test x$gcc_cv_readelf = x; then
2030 AC_MSG_RESULT(not found)
2032 AC_MSG_RESULT($gcc_cv_readelf)
2035 # Figure out what assembler alignment features are present.
2036 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2040 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2041 [Define if your assembler supports .balign and .p2align.])])
2043 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2046 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2047 [Define if your assembler supports specifying the maximum number
2048 of bytes to skip when using the GAS .p2align command.])])
2050 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2053 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2054 [Define if your assembler supports .literal16.])])
2056 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2058 [conftest_label1: .word 0
2060 conftest_label2: .word 0
2062 [if test x$gcc_cv_nm != x; then
2063 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2064 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2065 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2067 else gcc_cv_as_subsection_m1=yes
2069 rm -f conftest.nm1 conftest.nm2
2071 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2072 [Define if your assembler supports .subsection and .subsection -1 starts
2073 emitting at the beginning of your section.])])
2075 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2078 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2080 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2082 [ .weakref foobar, barfnot],,
2083 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2085 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2088 .NSUBSPA $CODE$,COMDAT],,
2089 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2091 # .hidden needs to be supported in both the assembler and the linker,
2092 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2093 # This is irritatingly difficult to feature test for; we have to check the
2094 # date string after the version number. If we've got an in-tree
2095 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2097 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2098 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2103 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2104 [if test $in_tree_ld = yes ; then
2106 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2107 && test $in_tree_ld_is_elf = yes; then
2108 gcc_cv_ld_hidden=yes
2112 gcc_cv_ld_hidden=yes
2113 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2114 if echo "$ld_ver" | grep GNU > /dev/null; then
2115 ld_vers=`echo $ld_ver | sed -n \
2116 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2117 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2118 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2119 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2120 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2121 if test 0"$ld_date" -lt 20020404; then
2122 if test -n "$ld_date"; then
2123 # If there was date string, but was earlier than 2002-04-04, fail
2125 elif test -z "$ld_vers"; then
2126 # If there was no date string nor ld version number, something is wrong
2129 test -z "$ld_vers_patch" && ld_vers_patch=0
2130 if test "$ld_vers_major" -lt 2; then
2132 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2133 gcc_cv_ld_hidden="no"
2134 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2141 hppa64*-*-hpux* | ia64*-*-hpux*)
2142 gcc_cv_ld_hidden=yes
2144 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2145 gcc_cv_ld_hidden=yes
2154 libgcc_visibility=no
2155 AC_SUBST(libgcc_visibility)
2156 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2157 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2158 libgcc_visibility=yes
2159 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2160 [Define if your assembler and linker support .hidden.])
2163 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2164 gcc_cv_ld_ro_rw_mix=unknown
2165 if test $in_tree_ld = yes ; then
2166 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2167 && test $in_tree_ld_is_elf = yes; then
2168 gcc_cv_ld_ro_rw_mix=read-write
2170 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2171 echo '.section myfoosect, "a"' > conftest1.s
2172 echo '.section myfoosect, "aw"' > conftest2.s
2173 echo '.byte 1' >> conftest2.s
2174 echo '.section myfoosect, "a"' > conftest3.s
2175 echo '.byte 0' >> conftest3.s
2176 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2177 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2178 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2179 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2180 conftest2.o conftest3.o > /dev/null 2>&1; then
2181 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2182 | sed -e '/myfoosect/!d' -e N`
2183 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2184 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2185 gcc_cv_ld_ro_rw_mix=read-only
2187 gcc_cv_ld_ro_rw_mix=read-write
2192 rm -f conftest.* conftest[123].*
2195 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2196 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2197 [Define if your linker links a mix of read-only
2198 and read-write sections into a read-write section.])
2200 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2202 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2203 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2211 [# GAS versions before 2.11 do not support uleb128,
2212 # despite appearing to.
2213 # ??? There exists an elf-specific test that will crash
2214 # the assembler. Perhaps it's better to figure out whether
2215 # arbitrary sections are supported and try the test.
2216 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2217 if echo "$as_ver" | grep GNU > /dev/null; then
2219 as_vers=`echo $as_ver | sed -n \
2220 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2221 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2222 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2224 if test $as_major -eq 2 && test $as_minor -lt 11
2226 else gcc_cv_as_leb128=yes
2229 [AC_DEFINE(HAVE_AS_LEB128, 1,
2230 [Define if your assembler supports .sleb128 and .uleb128.])])
2232 # Check if we have assembler support for unwind directives.
2233 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2240 .cfi_escape 1, 2, 3, 4, 5
2244 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2245 # read-only and read-write sections, we need to make sure that the
2246 # assembler used emits read-write .eh_frame sections.
2247 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2248 if test "x$gcc_cv_objdump" != x; then
2249 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2250 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2251 gcc_cv_as_cfi_directive=no
2253 gcc_cv_as_cfi_directive=yes
2256 # no objdump, err on the side of caution
2257 gcc_cv_as_cfi_directive=no
2260 gcc_cv_as_cfi_directive=yes
2264 gcc_cv_as_cfi_directive=yes
2267 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_readelf != x; then
2268 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2272 .cfi_adjust_cfa_offset 64
2274 .cfi_adjust_cfa_offset 128
2278 if $gcc_cv_readelf -wf conftest.o 2>/dev/null \
2279 | grep 'DW_CFA_advance_loc[12]:[ ][ ]*512[ ]' >/dev/null; then
2280 gcc_cv_as_cfi_advance_working=yes
2285 # no readelf, err on the side of caution
2286 gcc_cv_as_cfi_advance_working=no
2288 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2289 [`if test $gcc_cv_as_cfi_directive = yes \
2290 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2291 [Define 0/1 if your assembler supports CFI directives.])
2293 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2294 gcc_cv_as_cfi_personality_directive, ,,
2297 .cfi_personality 0, symbol
2299 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2300 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2301 then echo 1; else echo 0; fi`],
2302 [Define 0/1 if your assembler supports .cfi_personality.])
2304 # GAS versions up to and including 2.11.0 may mis-optimize
2306 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2314 .section .eh_frame,"aw",@progbits
2316 .4byte .LECIE1-.LSCIE1
2330 .4byte .LEFDE1-.LASFDE1
2332 .4byte .LASFDE1-__FRAME_BEGIN__
2340 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2341 cat > conftest.lit <<EOF
2342 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2343 0010 01000000 12000000 18000000 00000000 ................
2344 0020 08000000 04080000 0044 .........D @&t@
2346 cat > conftest.big <<EOF
2347 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2348 0010 00000001 00000012 00000018 00000000 ................
2349 0020 00000008 04000000 0844 .........D @&t@
2351 # If the assembler didn't choke, and we can objdump,
2352 # and we got the correct data, then succeed.
2353 # The text in the here-document typically retains its unix-style line
2354 # endings, while the output of objdump will use host line endings.
2355 # Therefore, use diff -b for the comparisons.
2356 if test x$gcc_cv_objdump != x \
2357 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2358 | tail -3 > conftest.got \
2359 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2360 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2362 gcc_cv_as_eh_frame=yes
2363 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2364 gcc_cv_as_eh_frame=buggy
2366 # Uh oh, what do we do now?
2367 gcc_cv_as_eh_frame=no
2370 if test $gcc_cv_as_eh_frame = buggy; then
2371 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2372 [Define if your assembler mis-optimizes .eh_frame data.])
2375 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2376 [elf,2,12,0], [--fatal-warnings],
2377 [.section .rodata.str, "aMS", @progbits, 1])
2378 if test $gcc_cv_as_shf_merge = no; then
2379 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2380 [elf,2,12,0], [--fatal-warnings],
2381 [.section .rodata.str, "aMS", %progbits, 1])
2383 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2384 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2385 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2387 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2388 [elf,2,16,0], [--fatal-warnings],
2389 [.section .text,"axG",@progbits,.foo,comdat])
2390 if test $gcc_cv_as_comdat_group = yes; then
2391 gcc_cv_as_comdat_group_percent=no
2393 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2394 [elf,2,16,0], [--fatal-warnings],
2395 [.section .text,"axG",%progbits,.foo,comdat])
2397 if test $in_tree_ld = yes ; then
2399 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2400 && test $in_tree_ld_is_elf = yes; then
2403 elif test x"$ld_vers" != x; then
2405 if test 0"$ld_date" -lt 20050308; then
2406 if test -n "$ld_date"; then
2407 # If there was date string, but was earlier than 2005-03-08, fail
2409 elif test "$ld_vers_major" -lt 2; then
2411 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2416 # assume linkers other than GNU ld don't support COMDAT group
2419 if test $comdat_group = no; then
2420 gcc_cv_as_comdat_group=no
2421 gcc_cv_as_comdat_group_percent=no
2423 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2424 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2425 [Define 0/1 if your assembler and linker support COMDAT groups.])
2427 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2428 gcc_cv_as_discriminator,
2432 .loc 1 1 0 discriminator 1],,
2433 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2434 [Define if your assembler supports the .loc discriminator sub-directive.])])
2436 # Thread-local storage - the check is heavily parameterized.
2445 .section ".tdata","awT",@progbits
2448 ldq $27,__tls_get_addr($29) !literal!1
2449 lda $16,foo($29) !tlsgd!1
2450 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2451 ldq $27,__tls_get_addr($29) !literal!2
2452 lda $16,foo($29) !tlsldm!2
2453 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2454 ldq $1,foo($29) !gotdtprel
2455 ldah $2,foo($29) !dtprelhi
2456 lda $3,foo($2) !dtprello
2457 lda $4,foo($29) !dtprel
2458 ldq $1,foo($29) !gottprel
2459 ldah $2,foo($29) !tprelhi
2460 lda $3,foo($2) !tprello
2461 lda $4,foo($29) !tprel'
2464 tls_as_opt=--fatal-warnings
2466 cris-*-*|crisv32-*-*)
2468 .section ".tdata","awT",@progbits
2475 tls_as_opt=--fatal-warnings
2479 .section ".tdata","awT",@progbits
2491 .section ".tdata","awT",@progbits
2495 addil LT%foo-$tls_gdidx$,gp
2496 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2499 addil LT%foo-$tls_ldidx$,gp
2501 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2502 addil LR%foo-$tls_dtpoff$,%ret0
2503 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2505 addil LT%foo-$tls_ieoff$,gp
2506 ldw RT%foo-$tls_ieoff$(%r1),%t2
2509 addil LR%foo-$tls_leoff$,%t1
2510 ldo RR%foo-$tls_leoff$(%r1),%t2'
2513 tls_as_opt=--fatal-warnings
2517 .section ".tdata","awT",%progbits
2530 .section ".tdata","awT",@progbits
2534 leal foo@TLSGD(,%ebx,1), %eax
2535 leal foo@TLSLDM(%ebx), %eax
2536 leal foo@DTPOFF(%eax), %edx
2537 movl foo@GOTTPOFF(%ebx), %eax
2538 subl foo@GOTTPOFF(%ebx), %eax
2539 addl foo@GOTNTPOFF(%ebx), %eax
2540 movl foo@INDNTPOFF, %eax
2541 movl $foo@TPOFF, %eax
2542 subl $foo@TPOFF, %eax
2543 leal foo@NTPOFF(%ecx), %eax'
2546 tls_as_opt=--fatal-warnings
2550 .section ".tdata","awT",@progbits
2554 leaq foo@TLSGD(%rip), %rdi
2555 leaq foo@TLSLD(%rip), %rdi
2556 leaq foo@DTPOFF(%rax), %rdx
2557 movq foo@GOTTPOFF(%rip), %rax
2558 movq $foo@TPOFF, %rax'
2561 tls_as_opt=--fatal-warnings
2565 .section ".tdata","awT",@progbits
2568 addl r16 = @ltoff(@dtpmod(foo#)), gp
2569 addl r17 = @ltoff(@dtprel(foo#)), gp
2570 addl r18 = @ltoff(@tprel(foo#)), gp
2571 addl r19 = @dtprel(foo#), gp
2572 adds r21 = @dtprel(foo#), r13
2573 movl r23 = @dtprel(foo#)
2574 addl r20 = @tprel(foo#), gp
2575 adds r22 = @tprel(foo#), r13
2576 movl r24 = @tprel(foo#)'
2579 tls_as_opt=--fatal-warnings
2583 .section .tdata,"awT",@progbits
2587 addiu $4, $28, %tlsgd(x)
2588 addiu $4, $28, %tlsldm(x)
2589 lui $4, %dtprel_hi(x)
2590 addiu $4, $4, %dtprel_lo(x)
2591 lw $4, %gottprel(x)($28)
2592 lui $4, %tprel_hi(x)
2593 addiu $4, $4, %tprel_lo(x)'
2596 tls_as_opt='-32 --fatal-warnings'
2600 .section .tdata,"awT",@progbits
2605 move.l x@TLSGD(%a5),%a0
2606 move.l x@TLSLDM(%a5),%a0
2607 move.l x@TLSLDO(%a5),%a0
2608 move.l x@TLSIE(%a5),%a0
2609 move.l x@TLSLE(%a5),%a0'
2612 tls_as_opt='--fatal-warnings'
2616 .section ".tdata","awT",@progbits
2624 addi 3,31,ld0@got@tlsgd
2626 addi 3,31,x1@got@tlsld
2629 addis 9,3,x2@dtprel@ha
2630 addi 9,9,x2@dtprel@l
2631 lwz 9,x3@got@tprel(31)
2634 addis 9,2,x2@tprel@ha
2635 addi 9,9,x2@tprel@l'
2638 tls_as_opt="-a32 --fatal-warnings"
2642 .section ".tdata","awT",@progbits
2650 addi 3,2,ld0@got@tlsgd
2656 addi 3,2,x1@got@tlsld
2662 addis 9,3,x2@dtprel@ha
2663 addi 9,9,x2@dtprel@l
2666 ld 9,x3@got@dtprel(2)
2672 tls_as_opt="-a64 --fatal-warnings"
2676 .section ".tdata","awT",@progbits
2685 l %r1,foo@GOTNTPOFF(%r12)
2686 l %r1,0(%r1):tls_load:foo
2687 bas %r14,0(%r1,%r13):tls_gdcall:foo
2688 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2691 tls_as_opt="-m31 --fatal-warnings"
2695 .section ".tdata","awT",@progbits
2703 lg %r1,foo@GOTNTPOFF(%r12)
2704 larl %r1,foo@INDNTPOFF
2705 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2706 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2709 tls_as_opt="-m64 -Aesame --fatal-warnings"
2711 sh-*-* | sh[34]-*-*)
2713 .section ".tdata","awT",@progbits
2723 tls_as_opt=--fatal-warnings
2727 sparc*-sun-solaris2.[56789]*)
2728 # TLS was introduced in the Solaris 9 4/04 release but
2729 # we do not enable it by default on Solaris 9 either.
2730 if test "x$enable_tls" = xyes ; then
2736 sparc*-sun-solaris2.*)
2743 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2745 .section ".tdata",#alloc,#write,#tls
2748 sethi %tgd_hi22(foo), %o0
2749 add %o0, %tgd_lo10(foo), %o1
2750 add %l7, %o1, %o0, %tgd_add(foo)
2751 call __tls_get_addr, %tgd_call(foo)
2752 sethi %tldm_hi22(foo), %l1
2753 add %l1, %tldm_lo10(foo), %l2
2754 add %l7, %l2, %o0, %tldm_add(foo)
2755 call __tls_get_addr, %tldm_call(foo)
2756 sethi %tldo_hix22(foo), %l3
2757 xor %l3, %tldo_lox10(foo), %l4
2758 add %o0, %l4, %l5, %tldo_add(foo)
2759 sethi %tie_hi22(foo), %o3
2760 add %o3, %tie_lo10(foo), %o3
2761 ld [%l7 + %o3], %o2, %tie_ld(foo)
2762 add %g7, %o2, %o4, %tie_add(foo)
2763 sethi %tle_hix22(foo), %l1
2764 xor %l1, %tle_lox10(foo), %o5
2765 ld [%g7 + %o5], %o1'
2770 .section ".tdata","awT",@progbits
2773 sethi %tgd_hi22(foo), %o0
2774 add %o0, %tgd_lo10(foo), %o1
2775 add %l7, %o1, %o0, %tgd_add(foo)
2776 call __tls_get_addr, %tgd_call(foo)
2777 sethi %tldm_hi22(foo), %l1
2778 add %l1, %tldm_lo10(foo), %l2
2779 add %l7, %l2, %o0, %tldm_add(foo)
2780 call __tls_get_addr, %tldm_call(foo)
2781 sethi %tldo_hix22(foo), %l3
2782 xor %l3, %tldo_lox10(foo), %l4
2783 add %o0, %l4, %l5, %tldo_add(foo)
2784 sethi %tie_hi22(foo), %o3
2785 add %o3, %tie_lo10(foo), %o3
2786 ld [%l7 + %o3], %o2, %tie_ld(foo)
2787 add %g7, %o2, %o4, %tie_add(foo)
2788 sethi %tle_hix22(foo), %l1
2789 xor %l1, %tle_lox10(foo), %o5
2790 ld [%g7 + %o5], %o1'
2793 tls_as_opt="-32 --fatal-warnings"
2798 .section ".tdata","awT",@progbits
2801 movi a8, foo@TLSFUNC
2802 movi a10, foo@TLSARG
2803 callx8.tls a8, foo@TLSCALL'
2810 if test "x$enable_tls" = xno ; then
2811 : # TLS explicitly disabled.
2812 elif test "x$enable_tls" = xyes ; then
2813 set_have_as_tls=yes # TLS explicitly enabled.
2814 elif test -z "$tls_first_major"; then
2815 : # If we don't have a check, assume no support.
2817 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2818 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2819 [set_have_as_tls=yes])
2821 if test $set_have_as_tls = yes ; then
2822 AC_DEFINE(HAVE_AS_TLS, 1,
2823 [Define if your assembler supports thread-local storage.])
2826 # Target-specific assembler checks.
2828 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2829 gcc_cv_ld_static_dynamic=no
2830 if test $in_tree_ld = yes ; then
2831 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
2832 gcc_cv_ld_static_dynamic=yes
2834 elif test x$gcc_cv_ld != x; then
2835 # Check if linker supports -Bstatic/-Bdynamic option
2836 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2837 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2838 gcc_cv_ld_static_dynamic=yes
2841 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2842 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2843 [Define if your linker supports -Bstatic/-Bdynamic option.])
2845 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2847 if test x"$demangler_in_ld" = xyes; then
2848 AC_MSG_CHECKING(linker --demangle support)
2849 gcc_cv_ld_demangle=no
2850 if test $in_tree_ld = yes; then
2851 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2852 gcc_cv_ld_demangle=yes
2854 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2855 # Check if the GNU linker supports --demangle option
2856 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2857 gcc_cv_ld_demangle=yes
2860 if test x"$gcc_cv_ld_demangle" = xyes; then
2861 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2862 [Define if your linker supports --demangle option.])
2864 AC_MSG_RESULT($gcc_cv_ld_demangle)
2868 # All TARGET_ABI_OSF targets.
2869 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2870 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2871 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2874 extbl $3, $2, $3 !lituse_bytoff!1
2875 ldq $2, a($29) !literal!1
2876 ldq $4, b($29) !literal!2
2877 ldq_u $3, 0($2) !lituse_base!1
2878 ldq $27, f($29) !literal!5
2879 jsr $26, ($27), f !lituse_jsr!5
2880 ldah $29, 0($26) !gpdisp!3
2881 lda $0, c($29) !gprel
2882 ldah $1, d($29) !gprelhigh
2883 lda $1, d($1) !gprellow
2884 lda $29, 0($29) !gpdisp!3],,
2885 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2886 [Define if your assembler supports explicit relocations.])])
2887 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2888 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2891 ldq $27, a($29) !literal!1
2892 jsr $26, ($27), a !lituse_jsrdirect!1],,
2893 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2894 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2898 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2899 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2900 [-no-mul-bug-abort], [.text],,
2901 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2902 [Define if your assembler supports the -no-mul-bug-abort option.])])
2906 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2907 [.register %g2, #scratch],,
2908 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2909 [Define if your assembler supports .register.])])
2911 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2913 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2914 [Define if your assembler supports -relax option.])])
2916 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2917 gcc_cv_as_sparc_ua_pcrel,,
2925 .uaword %r_disp32(foo)],
2926 [if test x$gcc_cv_ld != x \
2927 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2928 gcc_cv_as_sparc_ua_pcrel=yes
2931 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2932 [Define if your assembler and linker support unaligned PC relative relocs.])
2934 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2935 gcc_cv_as_sparc_ua_pcrel_hidden,,
2940 .uaword %r_disp32(foo)
2941 .byte 0x32, 0x33, 0x34
2946 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2947 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2948 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2949 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2950 if $gcc_cv_objdump -R conftest 2> /dev/null \
2951 | grep 'DISP32' > /dev/null 2>&1; then
2954 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2958 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2959 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2960 ]) # unaligned pcrel relocs
2962 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2963 gcc_cv_as_sparc_offsetable_lo10,,
2966 or %g1, %lo(ab) + 12, %g1
2967 or %g1, %lo(ab + 12), %g1],
2968 [if test x$gcc_cv_objdump != x \
2969 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2970 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2971 gcc_cv_as_sparc_offsetable_lo10=yes
2973 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2974 [Define if your assembler supports offsetable %lo().])])
2978 i[34567]86-*-* | x86_64-*-*)
2981 cygwin* | pe | mingw32*)
2982 # Recent binutils allows the three-operand form of ".comm" on PE. This
2983 # definition is used unconditionally to initialise the default state of
2984 # the target option variable that governs usage of the feature.
2985 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
2986 [2,19,52],,[.comm foo,1,32])
2987 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
2988 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
2989 [Define if your assembler supports specifying the alignment
2990 of objects allocated using the GAS .comm command.])
2991 # Used for DWARF 2 in PE
2992 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2993 gcc_cv_as_ix86_pe_secrel32,
2999 [if test x$gcc_cv_ld != x \
3000 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3001 gcc_cv_as_ix86_pe_secrel32=yes
3004 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3005 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3009 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3010 gcc_cv_as_ix86_filds,,,
3011 [filds mem; fists mem],,
3012 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3013 [Define if your assembler uses filds and fists mnemonics.])])
3015 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3016 gcc_cv_as_ix86_fildq,,,
3017 [fildq mem; fistpq mem],,
3018 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3019 [Define if your assembler uses fildq and fistq mnemonics.])])
3021 gcc_GAS_CHECK_FEATURE([cmov syntax],
3022 gcc_cv_as_ix86_cmov_sun_syntax,,,
3023 [cmovl.l %edx, %eax],,
3024 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3025 [Define if your assembler supports the Sun syntax for cmov.])])
3027 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3028 gcc_cv_as_ix86_ffreep,,,
3030 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3031 [Define if your assembler supports the ffreep mnemonic.])])
3033 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3034 gcc_cv_as_ix86_sahf,,,
3036 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3037 [Define if your assembler supports the sahf mnemonic.])])
3039 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3040 gcc_cv_as_ix86_diff_sect_delta,,,
3048 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3049 [Define if your assembler supports the subtraction of symbols in different sections.])])
3051 # This one is used unconditionally by i386.[ch]; it is to be defined
3052 # to 1 if the feature is present, 0 otherwise.
3053 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3054 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3060 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3061 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3062 [Define true if the assembler supports '.long foo@GOTOFF'.])
3066 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3067 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3069 addl r15 = @ltoffx(x#), gp
3071 ld8.mov r16 = [[r15]], x#],,
3072 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3073 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3079 *-*-aix*) conftest_s=' .machine "pwr5"
3083 gcc_GAS_CHECK_FEATURE([.machine directive support],
3084 gcc_cv_as_machine_directive,,,
3085 [ .machine ppc7400])
3086 if test x$gcc_cv_as_machine_directive != xyes; then
3087 echo "*** This target requires an assembler supporting \".machine\"" >&2
3088 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3089 test x$build = x$target && exit 1
3093 *) conftest_s=' .machine power4
3098 gcc_GAS_CHECK_FEATURE([mfcr field support],
3099 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3101 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3102 [Define if your assembler supports mfcr field.])])
3105 *-*-aix*) conftest_s=' .machine "pwr5"
3108 *) conftest_s=' .machine power5
3113 gcc_GAS_CHECK_FEATURE([popcntb support],
3114 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3116 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3117 [Define if your assembler supports popcntb field.])])
3120 *-*-aix*) conftest_s=' .machine "pwr5x"
3123 *) conftest_s=' .machine power5
3128 gcc_GAS_CHECK_FEATURE([fp round support],
3129 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3131 [AC_DEFINE(HAVE_AS_FPRND, 1,
3132 [Define if your assembler supports fprnd.])])
3135 *-*-aix*) conftest_s=' .machine "pwr6"
3138 *) conftest_s=' .machine power6
3143 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3144 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3146 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3147 [Define if your assembler supports mffgpr and mftgpr.])])
3150 *-*-aix*) conftest_s=' .csect .text[[PR]]
3152 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3156 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3157 *) conftest_s=' .text
3159 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3162 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3163 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3165 [AC_DEFINE(HAVE_AS_REL16, 1,
3166 [Define if your assembler supports R_PPC_REL16 relocs.])])
3169 *-*-aix*) conftest_s=' .machine "pwr6"
3172 *) conftest_s=' .machine power6
3177 gcc_GAS_CHECK_FEATURE([compare bytes support],
3178 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3180 [AC_DEFINE(HAVE_AS_CMPB, 1,
3181 [Define if your assembler supports cmpb.])])
3184 *-*-aix*) conftest_s=' .machine "pwr6"
3187 *) conftest_s=' .machine power6
3192 gcc_GAS_CHECK_FEATURE([decimal float support],
3193 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3195 [AC_DEFINE(HAVE_AS_DFP, 1,
3196 [Define if your assembler supports DFP instructions.])])
3199 *-*-aix*) conftest_s=' .machine "pwr7"
3202 *) conftest_s=' .machine power7
3207 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3208 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3210 [AC_DEFINE(HAVE_AS_VSX, 1,
3211 [Define if your assembler supports VSX instructions.])])
3214 *-*-aix*) conftest_s=' .machine "pwr7"
3217 *) conftest_s=' .machine power7
3222 gcc_GAS_CHECK_FEATURE([popcntd support],
3223 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3225 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3226 [Define if your assembler supports POPCNTD instructions.])])
3229 *-*-aix*) conftest_s=' .csect .text[[PR]]
3231 *) conftest_s=' .text
3235 gcc_GAS_CHECK_FEATURE([lwsync support],
3236 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3238 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3239 [Define if your assembler supports LWSYNC instructions.])])
3241 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3242 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3243 [.gnu_attribute 4,1],,
3244 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3245 [Define if your assembler supports .gnu_attribute.])])
3247 gcc_GAS_CHECK_FEATURE([tls marker support],
3248 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3249 [ bl __tls_get_addr(x@tlsgd)],,
3250 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3251 [Define if your assembler supports arg info for __tls_get_addr.])])
3255 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3256 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3257 [ lw $4,%gp_rel(foo)($4)],,
3258 [if test x$target_cpu_default = x
3259 then target_cpu_default=MASK_EXPLICIT_RELOCS
3260 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3262 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3263 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3264 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3265 [Define if the assembler understands -mno-shared.])])
3267 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3268 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3269 [.gnu_attribute 4,1],,
3270 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3271 [Define if your assembler supports .gnu_attribute.])])
3273 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3274 gcc_cv_as_mips_dtprelword, [2,18,0],,
3275 [.section .tdata,"awT",@progbits
3279 .dtprelword x+0x8000],,
3280 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3281 [Define if your assembler supports .dtprelword.])])
3283 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3284 gcc_cv_as_ld_jalr_reloc=no
3285 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3286 if test $in_tree_ld = yes ; then
3287 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3288 && test $in_tree_ld_is_elf = yes; then
3289 gcc_cv_as_ld_jalr_reloc=yes
3291 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3292 echo ' .ent x' > conftest.s
3293 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3294 echo ' ld $25,%call16(y)($28)' >> conftest.s
3295 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3296 echo '1: jalr $25' >> conftest.s
3297 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3298 echo '1: jalr $25' >> conftest.s
3299 echo ' .end x' >> conftest.s
3300 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3301 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3302 if $gcc_cv_objdump -d conftest.so | grep -q jalr \
3303 && $gcc_cv_objdump -d conftest.so | grep -q "bal.*<x>"; then
3304 gcc_cv_as_ld_jalr_reloc=yes
3310 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3311 if test x$target_cpu_default = x; then
3312 target_cpu_default=MASK_RELAX_PIC_CALLS
3314 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3317 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3319 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3320 [gcc_cv_ld_mips_personality_relaxation],
3321 [gcc_cv_ld_mips_personality_relaxation=no
3322 if test $in_tree_ld = yes ; then
3323 if test "$gcc_cv_gld_major_version" -eq 2 \
3324 -a "$gcc_cv_gld_minor_version" -ge 21 \
3325 -o "$gcc_cv_gld_major_version" -gt 2; then
3326 gcc_cv_ld_mips_personality_relaxation=yes
3328 elif test x$gcc_cv_as != x \
3329 -a x$gcc_cv_ld != x \
3330 -a x$gcc_cv_readelf != x ; then
3331 cat > conftest.s <<EOF
3333 .cfi_personality 0x80,indirect_ptr
3340 .section .data,"aw",@progbits
3344 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3345 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3346 if $gcc_cv_readelf -d conftest 2>&1 \
3347 | grep TEXTREL > /dev/null 2>&1; then
3349 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3350 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3353 gcc_cv_ld_mips_personality_relaxation=yes
3357 rm -f conftest.s conftest.o conftest])
3358 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3359 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3360 [Define if your linker can relax absolute .eh_frame personality
3361 pointers into PC-relative form.])
3366 # Mips and HP-UX need the GNU assembler.
3367 # Linux on IA64 might be able to use the Intel assembler.
3370 mips*-*-* | *-*-hpux* )
3371 if test x$gas_flag = xyes \
3372 || test x"$host" != x"$build" \
3373 || test ! -x "$gcc_cv_as" \
3374 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3377 echo "*** This configuration requires the GNU assembler" >&2
3383 # ??? Not all targets support dwarf2 debug_line, even within a version
3384 # of gas. Moreover, we need to emit a valid instruction to trigger any
3385 # info to the output file. So, as supported targets are added to gas 2.11,
3386 # add some instruction here to (also) show we expect this might work.
3387 # ??? Once 2.11 is released, probably need to add first known working
3388 # version to the per-target configury.
3390 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3391 | x86_64*-*-* | hppa*-*-* | arm*-*-* \
3392 | xstormy16*-*-* | cris-*-* | crisv32-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \
3393 | spu-*-* | fido*-*-* | m32c-*-*)
3396 ia64*-*-* | s390*-*-*)
3403 if test x"$insn" != x; then
3405 .file 1 \"conftest.s\"
3408 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3409 gcc_cv_as_dwarf2_debug_line,
3410 [elf,2,11,0],, [$conftest_s],
3411 [if test x$gcc_cv_objdump != x \
3412 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3413 | grep debug_line > /dev/null 2>&1; then
3414 gcc_cv_as_dwarf2_debug_line=yes
3417 # The .debug_line file table must be in the exact order that
3418 # we specified the files, since these indices are also used
3419 # by DW_AT_decl_file. Approximate this test by testing if
3420 # the assembler bitches if the same index is assigned twice.
3421 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3422 gcc_cv_as_dwarf2_file_buggy,,,
3426 if test $gcc_cv_as_dwarf2_debug_line = yes \
3427 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3428 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3429 [Define if your assembler supports dwarf2 .file/.loc directives,
3430 and preserves file table indices exactly as given.])
3433 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3434 gcc_cv_as_gdwarf2_flag,
3435 [elf,2,11,0], [--gdwarf2], [$insn],,
3436 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3437 [Define if your assembler supports the --gdwarf2 option.])])
3439 gcc_GAS_CHECK_FEATURE([--gstabs option],
3440 gcc_cv_as_gstabs_flag,
3441 [elf,2,11,0], [--gstabs], [$insn],
3442 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3443 # and warns about it, but still exits successfully. So check for
3445 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3447 else gcc_cv_as_gstabs_flag=yes
3449 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3450 [Define if your assembler supports the --gstabs option.])])
3452 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3453 gcc_cv_as_debug_prefix_map_flag,
3454 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3455 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3456 [Define if your assembler supports the --debug-prefix-map option.])])
3459 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3462 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3463 [Define if your assembler supports .lcomm with an alignment field.])])
3465 AC_ARG_ENABLE(gnu-unique-object,
3466 [ --enable-gnu-unique-object enable the use of the @gnu_unique_object ELF extension on
3468 [case $enable_gnu_unique_object in
3470 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
3471 Valid choices are 'yes' and 'no'.]) ;;
3473 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
3475 [.type foo, @gnu_unique_object],,
3476 # Also check for ld.so support, i.e. glibc 2.11 or higher.
3477 [if test x$host = x$build -a x$host = x$target &&
3478 glibcver=`ldd --version 2>/dev/null`; then
3479 glibcmajor=`expr "$glibcver" : "ldd (GNU libc) \([[0-9]]*\)"`
3480 glibcminor=`expr "$glibcver" : "ldd (GNU libc) [[0-9]]*\.\([[0-9]]*\)"`
3481 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
3482 if test "$glibcnum" -ge 2011 ; then
3483 enable_gnu_unique_object=yes
3486 if test x$enable_gnu_unique_object = xyes; then
3487 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
3488 [Define if your assembler supports @gnu_unique_object.])
3491 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3492 [gcc_cv_as_line_zero],
3493 [gcc_cv_as_line_zero=no
3494 if test $in_tree_gas = yes; then
3495 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3496 elif test "x$gcc_cv_as" != x; then
3497 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3498 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3499 test "x`cat conftest.out`" = x
3501 gcc_cv_as_line_zero=yes
3503 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3504 cat conftest.s >&AS_MESSAGE_LOG_FD
3505 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3506 cat conftest.out >&AS_MESSAGE_LOG_FD
3508 rm -f conftest.o conftest.s conftest.out
3510 if test "x$gcc_cv_as_line_zero" = xyes; then
3511 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3512 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3515 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3516 gcc_cv_ld_eh_frame_hdr=no
3517 if test $in_tree_ld = yes ; then
3518 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3519 && test $in_tree_ld_is_elf = yes; then
3520 gcc_cv_ld_eh_frame_hdr=yes
3522 elif test x$gcc_cv_ld != x; then
3523 # Check if linker supports --eh-frame-hdr option
3524 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3525 gcc_cv_ld_eh_frame_hdr=yes
3528 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3529 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3530 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3531 [Define if your linker supports --eh-frame-hdr option.])
3533 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3535 AC_MSG_CHECKING(linker position independent executable support)
3537 if test $in_tree_ld = yes ; then
3538 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3539 && test $in_tree_ld_is_elf = yes; then
3542 elif test x$gcc_cv_ld != x; then
3543 # Check if linker supports -pie option
3544 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3548 if test x"$gcc_cv_ld_pie" = xyes; then
3549 AC_DEFINE(HAVE_LD_PIE, 1,
3550 [Define if your linker supports -pie option.])
3552 AC_MSG_RESULT($gcc_cv_ld_pie)
3554 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3555 gcc_cv_ld_eh_gc_sections=no
3556 if test $in_tree_ld = yes ; then
3557 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3558 && test $in_tree_ld_is_elf = yes; then
3559 gcc_cv_ld_eh_gc_sections=yes
3561 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3562 cat > conftest.s <<EOF
3565 .type _start, @function
3568 .size _start, .-_start
3569 .section .text.foo,"ax",@progbits
3570 .type foo, @function
3574 .section .gcc_except_table.foo,"a",@progbits
3577 .section .eh_frame,"a",@progbits
3580 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3581 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3582 | grep "gc-sections option ignored" > /dev/null; then
3583 gcc_cv_ld_eh_gc_sections=no
3584 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3585 gcc_cv_ld_eh_gc_sections=yes
3586 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3587 if test x$gcc_cv_as_comdat_group != xyes; then
3588 gcc_cv_ld_eh_gc_sections=no
3589 cat > conftest.s <<EOF
3592 .type _start, @function
3595 .size _start, .-_start
3596 .section .gnu.linkonce.t.foo,"ax",@progbits
3597 .type foo, @function
3601 .section .gcc_except_table.foo,"a",@progbits
3604 .section .eh_frame,"a",@progbits
3607 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3608 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3609 | grep "gc-sections option ignored" > /dev/null; then
3610 gcc_cv_ld_eh_gc_sections=no
3611 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3612 gcc_cv_ld_eh_gc_sections=yes
3618 rm -f conftest.s conftest.o conftest
3622 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3623 gcc_cv_ld_eh_gc_sections=no
3626 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3627 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3628 [Define if your linker supports garbage collection of
3629 sections in presence of EH frames.])
3631 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3637 AC_CACHE_CHECK(linker --as-needed support,
3638 gcc_cv_ld_as_needed,
3639 [gcc_cv_ld_as_needed=no
3640 if test $in_tree_ld = yes ; then
3641 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3642 && test $in_tree_ld_is_elf = yes; then
3643 gcc_cv_ld_as_needed=yes
3645 elif test x$gcc_cv_ld != x; then
3646 # Check if linker supports --as-needed and --no-as-needed options
3647 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3648 gcc_cv_ld_as_needed=yes
3652 if test x"$gcc_cv_ld_as_needed" = xyes; then
3653 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3654 [Define if your linker supports --as-needed and --no-as-needed options.])
3657 case "$target:$tm_file" in
3658 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3659 AC_CACHE_CHECK(linker support for omitting dot symbols,
3660 gcc_cv_ld_no_dot_syms,
3661 [gcc_cv_ld_no_dot_syms=no
3662 if test $in_tree_ld = yes ; then
3663 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3664 gcc_cv_ld_no_dot_syms=yes
3666 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3667 cat > conftest1.s <<EOF
3671 cat > conftest2.s <<EOF
3672 .section ".opd","aw"
3677 .quad .LEfoo,.TOC.@tocbase,0
3683 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3684 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3685 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3686 gcc_cv_ld_no_dot_syms=yes
3688 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3691 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3692 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3693 [Define if your PowerPC64 linker only needs function descriptor syms.])
3698 AC_CACHE_CHECK(linker --build-id support,
3700 [gcc_cv_ld_buildid=no
3701 if test $in_tree_ld = yes ; then
3702 if test "$gcc_cv_gld_major_version" -eq 2 -a \
3703 "$gcc_cv_gld_minor_version" -ge 18 -o \
3704 "$gcc_cv_gld_major_version" -gt 2 \
3705 && test $in_tree_ld_is_elf = yes; then
3706 gcc_cv_ld_buildid=yes
3708 elif test x$gcc_cv_ld != x; then
3709 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
3710 gcc_cv_ld_buildid=yes
3713 if test x"$gcc_cv_ld_buildid" = xyes; then
3714 AC_DEFINE(HAVE_LD_BUILDID, 1,
3715 [Define if your linker supports --build-id.])
3718 AC_ARG_ENABLE(linker-build-id,
3719 [ --enable-linker-build-id
3720 compiler will always pass --build-id to linker],
3722 enable_linker_build_id=no)
3724 if test x"$enable_linker_build_id" = xyes; then
3725 if test x"$gcc_cv_ld_buildid" = xyes; then
3726 AC_DEFINE(ENABLE_LD_BUILDID, 1,
3727 [Define if gcc should always pass --build-id to linker.])
3729 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
3733 AC_CACHE_CHECK(linker --sysroot support,
3735 [gcc_cv_ld_sysroot=no
3736 if test $in_tree_ld = yes ; then
3737 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3738 gcc_cv_ld_sysroot=yes
3740 elif test x$gcc_cv_ld != x; then
3741 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3742 gcc_cv_ld_sysroot=yes
3745 if test x"$gcc_cv_ld_sysroot" = xyes; then
3746 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3747 [Define if your linker supports --sysroot.])
3750 if test x$with_sysroot = x && test x$host = x$target \
3751 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3752 && test "$prefix" != "NONE"; then
3753 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3754 [Define to PREFIX/include if cpp should also search that directory.])
3757 # Test for stack protector support in target C library.
3758 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3759 gcc_cv_libc_provides_ssp,
3760 [gcc_cv_libc_provides_ssp=no
3762 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
3763 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3764 if test "x$with_sysroot" = x; then
3765 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3766 elif test "x$with_build_sysroot" != "x"; then
3767 glibc_header_dir="${with_build_sysroot}/usr/include"
3768 elif test "x$with_sysroot" = xyes; then
3769 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3771 glibc_header_dir="${with_sysroot}/usr/include"
3774 glibc_header_dir=/usr/include
3776 # glibc 2.4 and later provides __stack_chk_fail and
3777 # either __stack_chk_guard, or TLS access to stack guard canary.
3778 if test -f $glibc_header_dir/features.h \
3779 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3780 $glibc_header_dir/features.h > /dev/null; then
3781 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3782 $glibc_header_dir/features.h > /dev/null; then
3783 gcc_cv_libc_provides_ssp=yes
3784 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3785 $glibc_header_dir/features.h > /dev/null \
3786 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3787 $glibc_header_dir/features.h > /dev/null; then
3788 gcc_cv_libc_provides_ssp=yes
3789 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
3790 $glibc_header_dir/features.h > /dev/null && \
3791 test -f $glibc_header_dir/bits/uClibc_config.h && \
3792 $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
3793 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
3794 gcc_cv_libc_provides_ssp=yes
3799 # Avoid complicated tests (see
3800 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
3801 # simply assert that glibc does provide this, which is true for all
3802 # realistically usable GNU/Hurd configurations.
3803 gcc_cv_libc_provides_ssp=yes;;
3804 *-*-darwin* | *-*-freebsd*)
3805 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3806 [echo "no __stack_chk_fail on this target"])
3808 *) gcc_cv_libc_provides_ssp=no ;;
3811 if test x$gcc_cv_libc_provides_ssp = xyes; then
3812 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3813 [Define if your target C library provides stack protector support])
3816 # Check if TFmode long double should be used by default or not.
3817 # Some glibc targets used DFmode long double, but with glibc 2.4
3818 # and later they can use TFmode.
3820 powerpc*-*-linux* | \
3825 AC_ARG_WITH(long-double-128,
3826 [ --with-long-double-128 Use 128-bit long double by default.],
3827 gcc_cv_target_ldbl128="$with_long_double_128",
3828 [gcc_cv_target_ldbl128=no
3829 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3830 if test "x$with_sysroot" = x; then
3831 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3832 elif test "x$with_build_sysroot" != "x"; then
3833 glibc_header_dir="${with_build_sysroot}/usr/include"
3834 elif test "x$with_sysroot" = xyes; then
3835 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3837 glibc_header_dir="${with_sysroot}/usr/include"
3840 glibc_header_dir=/usr/include
3843 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3844 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3845 && gcc_cv_target_ldbl128=yes
3850 if test x$gcc_cv_target_ldbl128 = xyes; then
3851 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3852 [Define if TFmode long double should be the default])
3855 # Find out what GC implementation we want, or may, use.
3857 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3865 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3868 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3873 echo "Using $GGC for garbage collection."
3875 # Libraries to use on the host. This will normally be set by the top
3876 # level Makefile. Here we simply capture the value for our Makefile.
3877 if test -z "${HOST_LIBS+set}"; then
3882 # Use the system's zlib library.
3884 zlibinc="-I\$(srcdir)/../zlib"
3885 AC_ARG_WITH(system-zlib,
3886 [ --with-system-zlib use installed libz],
3893 dnl Very limited version of automake's enable-maintainer-mode
3895 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3896 dnl maintainer-mode is disabled by default
3897 AC_ARG_ENABLE(maintainer-mode,
3898 [ --enable-maintainer-mode
3899 enable make rules and dependencies not useful
3900 (and sometimes confusing) to the casual installer],
3901 maintainer_mode=$enableval,
3904 AC_MSG_RESULT($maintainer_mode)
3906 if test "$maintainer_mode" = "yes"; then
3917 # Make empty files to contain the specs and options for each language.
3918 # Then add #include lines to for a compiler that has specs and/or options.
3924 # These (without "all_") are set in each config-lang.in.
3925 # `language' must be a single word so is spelled singularly.
3928 all_outputs='Makefile gccbug'
3929 # List of language makefile fragments.
3931 # List of language subdirectory makefiles. Deprecated.
3933 # Additional files for gengtype
3934 all_gtfiles="$target_gtfiles"
3936 # These are the languages that are set in --enable-languages,
3937 # and are available in the GCC tree.
3938 all_selected_languages=
3940 # Add the language fragments.
3941 # Languages are added via two mechanisms. Some information must be
3942 # recorded in makefile variables, these are defined in config-lang.in.
3943 # We accumulate them and plug them into the main Makefile.
3944 # The other mechanism is a set of hooks for each of the main targets
3945 # like `clean', `install', etc.
3947 language_hooks="Make-hooks"
3949 for lang in ${srcdir}/*/config-lang.in
3952 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3954 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3955 if test "x$lang_alias" = x
3957 echo "$lang doesn't set \$language." 1>&2
3960 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3961 subdirs="$subdirs $subdir"
3963 # $gcc_subdir is where the gcc integration files are to be found
3964 # for a language, both for internal compiler purposes (compiler
3965 # sources implementing front-end to GCC tree converters), and for
3966 # build infrastructure purposes (Make-lang.in, etc.)
3968 # This will be <subdir> (relative to $srcdir) if a line like
3969 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
3970 # is found in <langdir>/config-lang.in, and will remain <langdir>
3973 # Except for the language alias (fetched above), the regular
3974 # "config-lang.in" contents are always retrieved from $gcc_subdir,
3975 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
3976 # only this and the language alias.
3978 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
3979 if [ "$gcc_subdir" = "" ]; then
3980 gcc_subdir="$subdir"
3983 case ",$enable_languages," in
3985 all_selected_languages="$all_selected_languages $lang_alias"
3986 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
3987 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
3999 . ${srcdir}/$gcc_subdir/config-lang.in
4000 if test "x$language" = x
4002 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4007 case ",$enable_languages," in
4010 for i in $subdir_requires; do
4011 test -f "${srcdir}/$i/config-lang.in" && continue
4019 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4020 if test -f $srcdir/$gcc_subdir/lang.opt; then
4021 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4023 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4024 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4026 if test -f ${srcdir}/$gcc_subdir/Makefile.in
4027 then all_lang_makefiles="$gcc_subdir/Makefile"
4029 all_languages="$all_languages $language"
4030 all_compilers="$all_compilers $compilers"
4031 all_outputs="$all_outputs $outputs"
4032 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4035 # Pick up gtfiles for c
4037 . ${srcdir}/c-config-lang.in
4038 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4041 for language in $all_selected_languages
4043 check_languages="$check_languages check-$language"
4046 # We link each language in with a set of hooks, reached indirectly via
4047 # lang.${target}. Only do so for selected languages.
4051 target_list="all.cross start.encap rest.encap tags \
4052 install-common install-man install-info install-pdf dvi pdf \
4053 html uninstall info man srcextra srcman srcinfo \
4054 mostlyclean clean distclean maintainer-clean install-plugin"
4056 for t in $target_list
4059 for lang in $all_selected_languages
4063 echo "lang.$t: $x" >> Make-hooks
4072 echo "dir ." > .gdbinit
4073 echo "dir ${srcdir}" >> .gdbinit
4074 if test x$gdb_needs_out_file_path = xyes
4076 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4078 if test "x$subdirs" != x; then
4081 echo "dir ${srcdir}/$s" >> .gdbinit
4084 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4086 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4087 AC_SUBST(gcc_tooldir)
4090 # Find a directory in which to install a shared libgcc.
4092 AC_ARG_ENABLE(version-specific-runtime-libs,
4093 [ --enable-version-specific-runtime-libs
4094 specify that runtime libraries should be
4095 installed in a compiler-specific directory])
4097 AC_ARG_WITH(slibdir,
4098 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
4099 slibdir="$with_slibdir",
4100 if test "${enable_version_specific_runtime_libs+set}" = set; then
4101 slibdir='$(libsubdir)'
4102 elif test "$host" != "$target"; then
4103 slibdir='$(build_tooldir)/lib'
4109 # Substitute configuration variables
4112 AC_SUBST(all_compilers)
4113 AC_SUBST(all_gtfiles)
4114 AC_SUBST(all_lang_makefrags)
4115 AC_SUBST(all_lang_makefiles)
4116 AC_SUBST(all_languages)
4117 AC_SUBST(all_selected_languages)
4118 AC_SUBST(build_exeext)
4119 AC_SUBST(build_install_headers_dir)
4120 AC_SUBST(build_xm_file_list)
4121 AC_SUBST(build_xm_include_list)
4122 AC_SUBST(build_xm_defines)
4123 AC_SUBST(build_file_translate)
4124 AC_SUBST(check_languages)
4125 AC_SUBST(cpp_install_dir)
4126 AC_SUBST(xmake_file)
4127 AC_SUBST(tmake_file)
4128 AC_SUBST(TM_ENDIAN_CONFIG)
4129 AC_SUBST(TM_MULTILIB_CONFIG)
4130 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4131 AC_SUBST(extra_gcc_objs)
4132 AC_SUBST(extra_headers_list)
4133 AC_SUBST(extra_objs)
4134 AC_SUBST(extra_parts)
4135 AC_SUBST(extra_passes)
4136 AC_SUBST(extra_programs)
4137 AC_SUBST(float_h_file)
4138 AC_SUBST(gcc_config_arguments)
4139 AC_SUBST(gcc_gxx_include_dir)
4140 AC_SUBST(host_exeext)
4141 AC_SUBST(host_xm_file_list)
4142 AC_SUBST(host_xm_include_list)
4143 AC_SUBST(host_xm_defines)
4144 AC_SUBST(out_host_hook_obj)
4146 AC_SUBST(lang_opt_files)
4147 AC_SUBST(lang_specs_files)
4148 AC_SUBST(lang_tree_files)
4149 AC_SUBST(local_prefix)
4151 AC_SUBST(objc_boehm_gc)
4153 AC_SUBST(out_object_file)
4154 AC_SUBST(thread_file)
4155 AC_SUBST(tm_file_list)
4156 AC_SUBST(tm_include_list)
4157 AC_SUBST(tm_defines)
4158 AC_SUBST(tm_p_file_list)
4159 AC_SUBST(tm_p_include_list)
4160 AC_SUBST(xm_file_list)
4161 AC_SUBST(xm_include_list)
4162 AC_SUBST(xm_defines)
4163 AC_SUBST(use_gcc_stdint)
4164 AC_SUBST(c_target_objs)
4165 AC_SUBST(cxx_target_objs)
4166 AC_SUBST(fortran_target_objs)
4167 AC_SUBST(target_cpu_default)
4169 AC_SUBST_FILE(language_hooks)
4172 if test x${build} = x${host} ; then
4173 if test x${host} = x${target} ; then
4174 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4176 echo "Links are now set up to build a cross-compiler" 1>&2
4177 echo " from ${host} to ${target}." 1>&2
4180 if test x${host} = x${target} ; then
4181 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4182 echo " for ${target}." 1>&2
4184 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4185 echo " from ${host} to ${target}." 1>&2
4189 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4190 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4192 case "${GMPLIBS}" in
4193 *-lmpc*) AC_DEFINE(HAVE_mpc, 1, [Define if mpc is in use.]) ;;
4196 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4197 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4199 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4200 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4201 if test "x${CLOOGLIBS}" != "x" ; then
4202 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4205 # Check for plugin support
4206 AC_ARG_ENABLE(plugin,
4207 [ --enable-plugin enable plugin support],
4208 enable_plugin=$enableval,
4209 enable_plugin=yes; default_plugin=yes)
4212 if test x"$enable_plugin" = x"yes"; then
4213 # Check that the host supports -rdynamic and -ldl
4216 saved_LDFLAGS="$LDFLAGS"
4221 LDFLAGS="$LDFLAGS -rdynamic"
4222 AC_MSG_CHECKING([for -rdynamic])
4223 AC_TRY_LINK([],[return 0;],
4224 [AC_MSG_RESULT([yes]); have_rdynamic=yes],
4225 [AC_MSG_RESULT([no])])
4226 if test x"$have_rdynamic" = x"yes" ; then
4227 pluginlibs="-rdynamic"
4232 AC_MSG_CHECKING([for -ldl])
4234 [#include <dlfcn.h>],
4235 [volatile int f = 0; if (f) dlopen ("dummy", 0);],
4236 [AC_MSG_RESULT([yes]); have_dl=yes],
4237 [AC_MSG_RESULT([no])])
4238 if test x"$have_dl" = x"yes"; then
4239 pluginlibs="$pluginlibs -ldl"
4242 # Check that we can build shared objects with -fPIC -shared
4243 LDFLAGS="$LDFLAGS -fPIC -shared"
4244 AC_MSG_CHECKING([for -fPIC -shared])
4246 [extern int X;],[return X == 0;],
4247 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
4248 [AC_MSG_RESULT([no]); have_pic_shared=no])
4249 if test x"$have_pic_shared" != x"yes"; then
4254 # If plugin support had been requested but not available, fail.
4255 if test x"$enable_plugin" = x"no" ; then
4256 if test x"$default_plugin" != x"yes"; then
4258 Building GCC with plugin support requires a host that supports
4259 -fPIC, -shared, -ldl and -rdynamic.])
4263 LDFLAGS="$saved_LDFLAGS"
4267 AC_SUBST(pluginlibs)
4268 AC_SUBST(enable_plugin)
4269 if test x"$enable_plugin" = x"yes"; then
4270 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
4273 # Configure the subdirectories
4274 # AC_CONFIG_SUBDIRS($subdirs)
4276 # Create the Makefile
4277 # and configure language subdirectories
4278 AC_CONFIG_FILES($all_outputs)
4280 AC_CONFIG_COMMANDS([default],
4282 case ${CONFIG_HEADERS} in
4283 *auto-host.h:config.in*)
4286 # Make sure all the subdirs exist.
4287 for d in $subdirs doc build
4289 test -d $d || mkdir $d
4292 [subdirs='$subdirs'])