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 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2305 gcc_cv_as_cfi_sections_directive, ,,
2307 .cfi_sections .debug_frame, .eh_frame
2310 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2311 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2312 then echo 1; else echo 0; fi`],
2313 [Define 0/1 if your assembler supports .cfi_sections.])
2315 # GAS versions up to and including 2.11.0 may mis-optimize
2317 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2325 .section .eh_frame,"aw",@progbits
2327 .4byte .LECIE1-.LSCIE1
2341 .4byte .LEFDE1-.LASFDE1
2343 .4byte .LASFDE1-__FRAME_BEGIN__
2351 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2352 cat > conftest.lit <<EOF
2353 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2354 0010 01000000 12000000 18000000 00000000 ................
2355 0020 08000000 04080000 0044 .........D @&t@
2357 cat > conftest.big <<EOF
2358 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2359 0010 00000001 00000012 00000018 00000000 ................
2360 0020 00000008 04000000 0844 .........D @&t@
2362 # If the assembler didn't choke, and we can objdump,
2363 # and we got the correct data, then succeed.
2364 # The text in the here-document typically retains its unix-style line
2365 # endings, while the output of objdump will use host line endings.
2366 # Therefore, use diff -b for the comparisons.
2367 if test x$gcc_cv_objdump != x \
2368 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2369 | tail -3 > conftest.got \
2370 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2371 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2373 gcc_cv_as_eh_frame=yes
2374 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2375 gcc_cv_as_eh_frame=buggy
2377 # Uh oh, what do we do now?
2378 gcc_cv_as_eh_frame=no
2381 if test $gcc_cv_as_eh_frame = buggy; then
2382 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2383 [Define if your assembler mis-optimizes .eh_frame data.])
2386 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2387 [elf,2,12,0], [--fatal-warnings],
2388 [.section .rodata.str, "aMS", @progbits, 1])
2389 if test $gcc_cv_as_shf_merge = no; then
2390 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2391 [elf,2,12,0], [--fatal-warnings],
2392 [.section .rodata.str, "aMS", %progbits, 1])
2394 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2395 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2396 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2398 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2399 [elf,2,16,0], [--fatal-warnings],
2400 [.section .text,"axG",@progbits,.foo,comdat])
2401 if test $gcc_cv_as_comdat_group = yes; then
2402 gcc_cv_as_comdat_group_percent=no
2404 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2405 [elf,2,16,0], [--fatal-warnings],
2406 [.section .text,"axG",%progbits,.foo,comdat])
2408 if test $in_tree_ld = yes ; then
2410 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2411 && test $in_tree_ld_is_elf = yes; then
2414 elif test x"$ld_vers" != x; then
2416 if test 0"$ld_date" -lt 20050308; then
2417 if test -n "$ld_date"; then
2418 # If there was date string, but was earlier than 2005-03-08, fail
2420 elif test "$ld_vers_major" -lt 2; then
2422 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2427 # assume linkers other than GNU ld don't support COMDAT group
2430 if test $comdat_group = no; then
2431 gcc_cv_as_comdat_group=no
2432 gcc_cv_as_comdat_group_percent=no
2434 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2435 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2436 [Define 0/1 if your assembler and linker support COMDAT groups.])
2438 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2439 gcc_cv_as_discriminator,
2443 .loc 1 1 0 discriminator 1],,
2444 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2445 [Define if your assembler supports the .loc discriminator sub-directive.])])
2447 # Thread-local storage - the check is heavily parameterized.
2456 .section ".tdata","awT",@progbits
2459 ldq $27,__tls_get_addr($29) !literal!1
2460 lda $16,foo($29) !tlsgd!1
2461 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2462 ldq $27,__tls_get_addr($29) !literal!2
2463 lda $16,foo($29) !tlsldm!2
2464 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2465 ldq $1,foo($29) !gotdtprel
2466 ldah $2,foo($29) !dtprelhi
2467 lda $3,foo($2) !dtprello
2468 lda $4,foo($29) !dtprel
2469 ldq $1,foo($29) !gottprel
2470 ldah $2,foo($29) !tprelhi
2471 lda $3,foo($2) !tprello
2472 lda $4,foo($29) !tprel'
2475 tls_as_opt=--fatal-warnings
2477 cris-*-*|crisv32-*-*)
2479 .section ".tdata","awT",@progbits
2486 tls_as_opt=--fatal-warnings
2490 .section ".tdata","awT",@progbits
2502 .section ".tdata","awT",@progbits
2506 addil LT%foo-$tls_gdidx$,gp
2507 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2510 addil LT%foo-$tls_ldidx$,gp
2512 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2513 addil LR%foo-$tls_dtpoff$,%ret0
2514 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2516 addil LT%foo-$tls_ieoff$,gp
2517 ldw RT%foo-$tls_ieoff$(%r1),%t2
2520 addil LR%foo-$tls_leoff$,%t1
2521 ldo RR%foo-$tls_leoff$(%r1),%t2'
2524 tls_as_opt=--fatal-warnings
2528 .section ".tdata","awT",%progbits
2541 .section ".tdata","awT",@progbits
2545 leal foo@TLSGD(,%ebx,1), %eax
2546 leal foo@TLSLDM(%ebx), %eax
2547 leal foo@DTPOFF(%eax), %edx
2548 movl foo@GOTTPOFF(%ebx), %eax
2549 subl foo@GOTTPOFF(%ebx), %eax
2550 addl foo@GOTNTPOFF(%ebx), %eax
2551 movl foo@INDNTPOFF, %eax
2552 movl $foo@TPOFF, %eax
2553 subl $foo@TPOFF, %eax
2554 leal foo@NTPOFF(%ecx), %eax'
2557 tls_as_opt=--fatal-warnings
2561 .section ".tdata","awT",@progbits
2565 leaq foo@TLSGD(%rip), %rdi
2566 leaq foo@TLSLD(%rip), %rdi
2567 leaq foo@DTPOFF(%rax), %rdx
2568 movq foo@GOTTPOFF(%rip), %rax
2569 movq $foo@TPOFF, %rax'
2572 tls_as_opt=--fatal-warnings
2576 .section ".tdata","awT",@progbits
2579 addl r16 = @ltoff(@dtpmod(foo#)), gp
2580 addl r17 = @ltoff(@dtprel(foo#)), gp
2581 addl r18 = @ltoff(@tprel(foo#)), gp
2582 addl r19 = @dtprel(foo#), gp
2583 adds r21 = @dtprel(foo#), r13
2584 movl r23 = @dtprel(foo#)
2585 addl r20 = @tprel(foo#), gp
2586 adds r22 = @tprel(foo#), r13
2587 movl r24 = @tprel(foo#)'
2590 tls_as_opt=--fatal-warnings
2594 .section .tdata,"awT",@progbits
2598 addiu $4, $28, %tlsgd(x)
2599 addiu $4, $28, %tlsldm(x)
2600 lui $4, %dtprel_hi(x)
2601 addiu $4, $4, %dtprel_lo(x)
2602 lw $4, %gottprel(x)($28)
2603 lui $4, %tprel_hi(x)
2604 addiu $4, $4, %tprel_lo(x)'
2607 tls_as_opt='-32 --fatal-warnings'
2611 .section .tdata,"awT",@progbits
2616 move.l x@TLSGD(%a5),%a0
2617 move.l x@TLSLDM(%a5),%a0
2618 move.l x@TLSLDO(%a5),%a0
2619 move.l x@TLSIE(%a5),%a0
2620 move.l x@TLSLE(%a5),%a0'
2623 tls_as_opt='--fatal-warnings'
2627 .section ".tdata","awT",@progbits
2635 addi 3,31,ld0@got@tlsgd
2637 addi 3,31,x1@got@tlsld
2640 addis 9,3,x2@dtprel@ha
2641 addi 9,9,x2@dtprel@l
2642 lwz 9,x3@got@tprel(31)
2645 addis 9,2,x2@tprel@ha
2646 addi 9,9,x2@tprel@l'
2649 tls_as_opt="-a32 --fatal-warnings"
2653 .section ".tdata","awT",@progbits
2661 addi 3,2,ld0@got@tlsgd
2667 addi 3,2,x1@got@tlsld
2673 addis 9,3,x2@dtprel@ha
2674 addi 9,9,x2@dtprel@l
2677 ld 9,x3@got@dtprel(2)
2683 tls_as_opt="-a64 --fatal-warnings"
2687 .section ".tdata","awT",@progbits
2696 l %r1,foo@GOTNTPOFF(%r12)
2697 l %r1,0(%r1):tls_load:foo
2698 bas %r14,0(%r1,%r13):tls_gdcall:foo
2699 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2702 tls_as_opt="-m31 --fatal-warnings"
2706 .section ".tdata","awT",@progbits
2714 lg %r1,foo@GOTNTPOFF(%r12)
2715 larl %r1,foo@INDNTPOFF
2716 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2717 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2720 tls_as_opt="-m64 -Aesame --fatal-warnings"
2722 sh-*-* | sh[34]-*-*)
2724 .section ".tdata","awT",@progbits
2734 tls_as_opt=--fatal-warnings
2738 sparc*-sun-solaris2.[56789]*)
2739 # TLS was introduced in the Solaris 9 4/04 release but
2740 # we do not enable it by default on Solaris 9 either.
2741 if test "x$enable_tls" = xyes ; then
2747 sparc*-sun-solaris2.*)
2754 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2756 .section ".tdata",#alloc,#write,#tls
2759 sethi %tgd_hi22(foo), %o0
2760 add %o0, %tgd_lo10(foo), %o1
2761 add %l7, %o1, %o0, %tgd_add(foo)
2762 call __tls_get_addr, %tgd_call(foo)
2763 sethi %tldm_hi22(foo), %l1
2764 add %l1, %tldm_lo10(foo), %l2
2765 add %l7, %l2, %o0, %tldm_add(foo)
2766 call __tls_get_addr, %tldm_call(foo)
2767 sethi %tldo_hix22(foo), %l3
2768 xor %l3, %tldo_lox10(foo), %l4
2769 add %o0, %l4, %l5, %tldo_add(foo)
2770 sethi %tie_hi22(foo), %o3
2771 add %o3, %tie_lo10(foo), %o3
2772 ld [%l7 + %o3], %o2, %tie_ld(foo)
2773 add %g7, %o2, %o4, %tie_add(foo)
2774 sethi %tle_hix22(foo), %l1
2775 xor %l1, %tle_lox10(foo), %o5
2776 ld [%g7 + %o5], %o1'
2781 .section ".tdata","awT",@progbits
2784 sethi %tgd_hi22(foo), %o0
2785 add %o0, %tgd_lo10(foo), %o1
2786 add %l7, %o1, %o0, %tgd_add(foo)
2787 call __tls_get_addr, %tgd_call(foo)
2788 sethi %tldm_hi22(foo), %l1
2789 add %l1, %tldm_lo10(foo), %l2
2790 add %l7, %l2, %o0, %tldm_add(foo)
2791 call __tls_get_addr, %tldm_call(foo)
2792 sethi %tldo_hix22(foo), %l3
2793 xor %l3, %tldo_lox10(foo), %l4
2794 add %o0, %l4, %l5, %tldo_add(foo)
2795 sethi %tie_hi22(foo), %o3
2796 add %o3, %tie_lo10(foo), %o3
2797 ld [%l7 + %o3], %o2, %tie_ld(foo)
2798 add %g7, %o2, %o4, %tie_add(foo)
2799 sethi %tle_hix22(foo), %l1
2800 xor %l1, %tle_lox10(foo), %o5
2801 ld [%g7 + %o5], %o1'
2804 tls_as_opt="-32 --fatal-warnings"
2809 .section ".tdata","awT",@progbits
2812 movi a8, foo@TLSFUNC
2813 movi a10, foo@TLSARG
2814 callx8.tls a8, foo@TLSCALL'
2821 if test "x$enable_tls" = xno ; then
2822 : # TLS explicitly disabled.
2823 elif test "x$enable_tls" = xyes ; then
2824 set_have_as_tls=yes # TLS explicitly enabled.
2825 elif test -z "$tls_first_major"; then
2826 : # If we don't have a check, assume no support.
2828 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2829 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2830 [set_have_as_tls=yes])
2832 if test $set_have_as_tls = yes ; then
2833 AC_DEFINE(HAVE_AS_TLS, 1,
2834 [Define if your assembler supports thread-local storage.])
2837 # Target-specific assembler checks.
2839 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2840 gcc_cv_ld_static_dynamic=no
2841 if test $in_tree_ld = yes ; then
2842 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
2843 gcc_cv_ld_static_dynamic=yes
2845 elif test x$gcc_cv_ld != x; then
2846 # Check if linker supports -Bstatic/-Bdynamic option
2847 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2848 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2849 gcc_cv_ld_static_dynamic=yes
2852 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2853 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2854 [Define if your linker supports -Bstatic/-Bdynamic option.])
2856 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2858 if test x"$demangler_in_ld" = xyes; then
2859 AC_MSG_CHECKING(linker --demangle support)
2860 gcc_cv_ld_demangle=no
2861 if test $in_tree_ld = yes; then
2862 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2863 gcc_cv_ld_demangle=yes
2865 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2866 # Check if the GNU linker supports --demangle option
2867 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2868 gcc_cv_ld_demangle=yes
2871 if test x"$gcc_cv_ld_demangle" = xyes; then
2872 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2873 [Define if your linker supports --demangle option.])
2875 AC_MSG_RESULT($gcc_cv_ld_demangle)
2879 # All TARGET_ABI_OSF targets.
2880 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2881 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2882 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2885 extbl $3, $2, $3 !lituse_bytoff!1
2886 ldq $2, a($29) !literal!1
2887 ldq $4, b($29) !literal!2
2888 ldq_u $3, 0($2) !lituse_base!1
2889 ldq $27, f($29) !literal!5
2890 jsr $26, ($27), f !lituse_jsr!5
2891 ldah $29, 0($26) !gpdisp!3
2892 lda $0, c($29) !gprel
2893 ldah $1, d($29) !gprelhigh
2894 lda $1, d($1) !gprellow
2895 lda $29, 0($29) !gpdisp!3],,
2896 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2897 [Define if your assembler supports explicit relocations.])])
2898 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2899 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2902 ldq $27, a($29) !literal!1
2903 jsr $26, ($27), a !lituse_jsrdirect!1],,
2904 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2905 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2909 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2910 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2911 [-no-mul-bug-abort], [.text],,
2912 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2913 [Define if your assembler supports the -no-mul-bug-abort option.])])
2917 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2918 [.register %g2, #scratch],,
2919 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2920 [Define if your assembler supports .register.])])
2922 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2924 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2925 [Define if your assembler supports -relax option.])])
2927 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2928 gcc_cv_as_sparc_ua_pcrel,,
2936 .uaword %r_disp32(foo)],
2937 [if test x$gcc_cv_ld != x \
2938 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2939 gcc_cv_as_sparc_ua_pcrel=yes
2942 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2943 [Define if your assembler and linker support unaligned PC relative relocs.])
2945 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2946 gcc_cv_as_sparc_ua_pcrel_hidden,,
2951 .uaword %r_disp32(foo)
2952 .byte 0x32, 0x33, 0x34
2957 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2958 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2959 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2960 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2961 if $gcc_cv_objdump -R conftest 2> /dev/null \
2962 | grep 'DISP32' > /dev/null 2>&1; then
2965 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2969 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2970 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2971 ]) # unaligned pcrel relocs
2973 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2974 gcc_cv_as_sparc_offsetable_lo10,,
2977 or %g1, %lo(ab) + 12, %g1
2978 or %g1, %lo(ab + 12), %g1],
2979 [if test x$gcc_cv_objdump != x \
2980 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2981 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2982 gcc_cv_as_sparc_offsetable_lo10=yes
2984 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2985 [Define if your assembler supports offsetable %lo().])])
2989 i[34567]86-*-* | x86_64-*-*)
2992 cygwin* | pe | mingw32*)
2993 # Recent binutils allows the three-operand form of ".comm" on PE. This
2994 # definition is used unconditionally to initialise the default state of
2995 # the target option variable that governs usage of the feature.
2996 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
2997 [2,19,52],,[.comm foo,1,32])
2998 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
2999 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3000 [Define if your assembler supports specifying the alignment
3001 of objects allocated using the GAS .comm command.])
3002 # Used for DWARF 2 in PE
3003 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3004 gcc_cv_as_ix86_pe_secrel32,
3010 [if test x$gcc_cv_ld != x \
3011 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3012 gcc_cv_as_ix86_pe_secrel32=yes
3015 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3016 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3020 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3021 gcc_cv_as_ix86_filds,,,
3022 [filds mem; fists mem],,
3023 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3024 [Define if your assembler uses filds and fists mnemonics.])])
3026 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3027 gcc_cv_as_ix86_fildq,,,
3028 [fildq mem; fistpq mem],,
3029 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3030 [Define if your assembler uses fildq and fistq mnemonics.])])
3032 gcc_GAS_CHECK_FEATURE([cmov syntax],
3033 gcc_cv_as_ix86_cmov_sun_syntax,,,
3034 [cmovl.l %edx, %eax],,
3035 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3036 [Define if your assembler supports the Sun syntax for cmov.])])
3038 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3039 gcc_cv_as_ix86_ffreep,,,
3041 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3042 [Define if your assembler supports the ffreep mnemonic.])])
3044 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3045 gcc_cv_as_ix86_sahf,,,
3047 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3048 [Define if your assembler supports the sahf mnemonic.])])
3050 gcc_GAS_CHECK_FEATURE([swap suffix],
3051 gcc_cv_as_ix86_swap,,,
3052 [movl.s %esp, %ebp],,
3053 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3054 [Define if your assembler supports the swap suffix.])])
3056 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3057 gcc_cv_as_ix86_diff_sect_delta,,,
3065 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3066 [Define if your assembler supports the subtraction of symbols in different sections.])])
3068 # This one is used unconditionally by i386.[ch]; it is to be defined
3069 # to 1 if the feature is present, 0 otherwise.
3070 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3071 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3077 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3078 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3079 [Define true if the assembler supports '.long foo@GOTOFF'.])
3083 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3084 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3086 addl r15 = @ltoffx(x#), gp
3088 ld8.mov r16 = [[r15]], x#],,
3089 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3090 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3096 *-*-aix*) conftest_s=' .machine "pwr5"
3100 gcc_GAS_CHECK_FEATURE([.machine directive support],
3101 gcc_cv_as_machine_directive,,,
3102 [ .machine ppc7400])
3103 if test x$gcc_cv_as_machine_directive != xyes; then
3104 echo "*** This target requires an assembler supporting \".machine\"" >&2
3105 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3106 test x$build = x$target && exit 1
3110 *) conftest_s=' .machine power4
3115 gcc_GAS_CHECK_FEATURE([mfcr field support],
3116 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3118 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3119 [Define if your assembler supports mfcr field.])])
3122 *-*-aix*) conftest_s=' .machine "pwr5"
3125 *) conftest_s=' .machine power5
3130 gcc_GAS_CHECK_FEATURE([popcntb support],
3131 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3133 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3134 [Define if your assembler supports popcntb field.])])
3137 *-*-aix*) conftest_s=' .machine "pwr5x"
3140 *) conftest_s=' .machine power5
3145 gcc_GAS_CHECK_FEATURE([fp round support],
3146 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3148 [AC_DEFINE(HAVE_AS_FPRND, 1,
3149 [Define if your assembler supports fprnd.])])
3152 *-*-aix*) conftest_s=' .machine "pwr6"
3155 *) conftest_s=' .machine power6
3160 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3161 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3163 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3164 [Define if your assembler supports mffgpr and mftgpr.])])
3167 *-*-aix*) conftest_s=' .csect .text[[PR]]
3169 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3173 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3174 *) conftest_s=' .text
3176 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3179 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3180 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3182 [AC_DEFINE(HAVE_AS_REL16, 1,
3183 [Define if your assembler supports R_PPC_REL16 relocs.])])
3186 *-*-aix*) conftest_s=' .machine "pwr6"
3189 *) conftest_s=' .machine power6
3194 gcc_GAS_CHECK_FEATURE([compare bytes support],
3195 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3197 [AC_DEFINE(HAVE_AS_CMPB, 1,
3198 [Define if your assembler supports cmpb.])])
3201 *-*-aix*) conftest_s=' .machine "pwr6"
3204 *) conftest_s=' .machine power6
3209 gcc_GAS_CHECK_FEATURE([decimal float support],
3210 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3212 [AC_DEFINE(HAVE_AS_DFP, 1,
3213 [Define if your assembler supports DFP instructions.])])
3216 *-*-aix*) conftest_s=' .machine "pwr7"
3219 *) conftest_s=' .machine power7
3224 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3225 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3227 [AC_DEFINE(HAVE_AS_VSX, 1,
3228 [Define if your assembler supports VSX instructions.])])
3231 *-*-aix*) conftest_s=' .machine "pwr7"
3234 *) conftest_s=' .machine power7
3239 gcc_GAS_CHECK_FEATURE([popcntd support],
3240 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3242 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3243 [Define if your assembler supports POPCNTD instructions.])])
3246 *-*-aix*) conftest_s=' .csect .text[[PR]]
3248 *) conftest_s=' .text
3252 gcc_GAS_CHECK_FEATURE([lwsync support],
3253 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3255 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3256 [Define if your assembler supports LWSYNC instructions.])])
3259 *-*-aix*) conftest_s=' .machine "476"
3262 *) conftest_s=' .machine "476"
3267 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3268 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3270 [AC_DEFINE(HAVE_AS_DCI, 1,
3271 [Define if your assembler supports the DCI/ICI instructions.])])
3273 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3274 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3275 [.gnu_attribute 4,1],,
3276 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3277 [Define if your assembler supports .gnu_attribute.])])
3279 gcc_GAS_CHECK_FEATURE([tls marker support],
3280 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3281 [ bl __tls_get_addr(x@tlsgd)],,
3282 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3283 [Define if your assembler supports arg info for __tls_get_addr.])])
3287 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3288 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3289 [ lw $4,%gp_rel(foo)($4)],,
3290 [if test x$target_cpu_default = x
3291 then target_cpu_default=MASK_EXPLICIT_RELOCS
3292 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3294 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3295 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3296 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3297 [Define if the assembler understands -mno-shared.])])
3299 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3300 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3301 [.gnu_attribute 4,1],,
3302 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3303 [Define if your assembler supports .gnu_attribute.])])
3305 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3306 gcc_cv_as_mips_dtprelword, [2,18,0],,
3307 [.section .tdata,"awT",@progbits
3311 .dtprelword x+0x8000],,
3312 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3313 [Define if your assembler supports .dtprelword.])])
3315 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3316 gcc_cv_as_ld_jalr_reloc=no
3317 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3318 if test $in_tree_ld = yes ; then
3319 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3320 && test $in_tree_ld_is_elf = yes; then
3321 gcc_cv_as_ld_jalr_reloc=yes
3323 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3324 echo ' .ent x' > conftest.s
3325 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3326 echo ' ld $25,%call16(y)($28)' >> conftest.s
3327 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3328 echo '1: jalr $25' >> conftest.s
3329 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3330 echo '1: jalr $25' >> conftest.s
3331 echo ' .end x' >> conftest.s
3332 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3333 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3334 if $gcc_cv_objdump -d conftest.so | grep -q jalr \
3335 && $gcc_cv_objdump -d conftest.so | grep -q "bal.*<x>"; then
3336 gcc_cv_as_ld_jalr_reloc=yes
3342 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3343 if test x$target_cpu_default = x; then
3344 target_cpu_default=MASK_RELAX_PIC_CALLS
3346 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3349 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3351 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3352 [gcc_cv_ld_mips_personality_relaxation],
3353 [gcc_cv_ld_mips_personality_relaxation=no
3354 if test $in_tree_ld = yes ; then
3355 if test "$gcc_cv_gld_major_version" -eq 2 \
3356 -a "$gcc_cv_gld_minor_version" -ge 21 \
3357 -o "$gcc_cv_gld_major_version" -gt 2; then
3358 gcc_cv_ld_mips_personality_relaxation=yes
3360 elif test x$gcc_cv_as != x \
3361 -a x$gcc_cv_ld != x \
3362 -a x$gcc_cv_readelf != x ; then
3363 cat > conftest.s <<EOF
3365 .cfi_personality 0x80,indirect_ptr
3372 .section .data,"aw",@progbits
3376 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3377 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3378 if $gcc_cv_readelf -d conftest 2>&1 \
3379 | grep TEXTREL > /dev/null 2>&1; then
3381 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3382 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3385 gcc_cv_ld_mips_personality_relaxation=yes
3389 rm -f conftest.s conftest.o conftest])
3390 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3391 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3392 [Define if your linker can relax absolute .eh_frame personality
3393 pointers into PC-relative form.])
3398 # Mips and HP-UX need the GNU assembler.
3399 # Linux on IA64 might be able to use the Intel assembler.
3402 mips*-*-* | *-*-hpux* )
3403 if test x$gas_flag = xyes \
3404 || test x"$host" != x"$build" \
3405 || test ! -x "$gcc_cv_as" \
3406 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3409 echo "*** This configuration requires the GNU assembler" >&2
3415 # ??? Not all targets support dwarf2 debug_line, even within a version
3416 # of gas. Moreover, we need to emit a valid instruction to trigger any
3417 # info to the output file. So, as supported targets are added to gas 2.11,
3418 # add some instruction here to (also) show we expect this might work.
3419 # ??? Once 2.11 is released, probably need to add first known working
3420 # version to the per-target configury.
3422 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3423 | x86_64*-*-* | hppa*-*-* | arm*-*-* \
3424 | xstormy16*-*-* | cris-*-* | crisv32-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \
3425 | spu-*-* | fido*-*-* | m32c-*-*)
3428 ia64*-*-* | s390*-*-*)
3435 if test x"$insn" != x; then
3437 .file 1 \"conftest.s\"
3440 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3441 gcc_cv_as_dwarf2_debug_line,
3442 [elf,2,11,0],, [$conftest_s],
3443 [if test x$gcc_cv_objdump != x \
3444 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3445 | grep debug_line > /dev/null 2>&1; then
3446 gcc_cv_as_dwarf2_debug_line=yes
3449 # The .debug_line file table must be in the exact order that
3450 # we specified the files, since these indices are also used
3451 # by DW_AT_decl_file. Approximate this test by testing if
3452 # the assembler bitches if the same index is assigned twice.
3453 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3454 gcc_cv_as_dwarf2_file_buggy,,,
3458 if test $gcc_cv_as_dwarf2_debug_line = yes \
3459 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3460 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3461 [Define if your assembler supports dwarf2 .file/.loc directives,
3462 and preserves file table indices exactly as given.])
3465 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3466 gcc_cv_as_gdwarf2_flag,
3467 [elf,2,11,0], [--gdwarf2], [$insn],,
3468 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3469 [Define if your assembler supports the --gdwarf2 option.])])
3471 gcc_GAS_CHECK_FEATURE([--gstabs option],
3472 gcc_cv_as_gstabs_flag,
3473 [elf,2,11,0], [--gstabs], [$insn],
3474 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3475 # and warns about it, but still exits successfully. So check for
3477 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3479 else gcc_cv_as_gstabs_flag=yes
3481 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3482 [Define if your assembler supports the --gstabs option.])])
3484 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3485 gcc_cv_as_debug_prefix_map_flag,
3486 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3487 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3488 [Define if your assembler supports the --debug-prefix-map option.])])
3491 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3494 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3495 [Define if your assembler supports .lcomm with an alignment field.])])
3497 AC_ARG_ENABLE(gnu-unique-object,
3498 [ --enable-gnu-unique-object enable the use of the @gnu_unique_object ELF extension on
3500 [case $enable_gnu_unique_object in
3502 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
3503 Valid choices are 'yes' and 'no'.]) ;;
3505 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
3507 [.type foo, @gnu_unique_object],,
3508 # Also check for ld.so support, i.e. glibc 2.11 or higher.
3509 [if test x$host = x$build -a x$host = x$target &&
3510 glibcver=`ldd --version 2>/dev/null`; then
3511 glibcmajor=`expr "$glibcver" : "ldd (GNU libc) \([[0-9]]*\)"`
3512 glibcminor=`expr "$glibcver" : "ldd (GNU libc) [[0-9]]*\.\([[0-9]]*\)"`
3513 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
3514 if test "$glibcnum" -ge 2011 ; then
3515 enable_gnu_unique_object=yes
3518 if test x$enable_gnu_unique_object = xyes; then
3519 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
3520 [Define if your assembler supports @gnu_unique_object.])
3523 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3524 [gcc_cv_as_line_zero],
3525 [gcc_cv_as_line_zero=no
3526 if test $in_tree_gas = yes; then
3527 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3528 elif test "x$gcc_cv_as" != x; then
3529 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3530 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3531 test "x`cat conftest.out`" = x
3533 gcc_cv_as_line_zero=yes
3535 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3536 cat conftest.s >&AS_MESSAGE_LOG_FD
3537 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3538 cat conftest.out >&AS_MESSAGE_LOG_FD
3540 rm -f conftest.o conftest.s conftest.out
3542 if test "x$gcc_cv_as_line_zero" = xyes; then
3543 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3544 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3547 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3548 gcc_cv_ld_eh_frame_hdr=no
3549 if test $in_tree_ld = yes ; then
3550 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3551 && test $in_tree_ld_is_elf = yes; then
3552 gcc_cv_ld_eh_frame_hdr=yes
3554 elif test x$gcc_cv_ld != x; then
3555 # Check if linker supports --eh-frame-hdr option
3556 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3557 gcc_cv_ld_eh_frame_hdr=yes
3560 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3561 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3562 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3563 [Define if your linker supports --eh-frame-hdr option.])
3565 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3567 AC_MSG_CHECKING(linker position independent executable support)
3569 if test $in_tree_ld = yes ; then
3570 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3571 && test $in_tree_ld_is_elf = yes; then
3574 elif test x$gcc_cv_ld != x; then
3575 # Check if linker supports -pie option
3576 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3580 if test x"$gcc_cv_ld_pie" = xyes; then
3581 AC_DEFINE(HAVE_LD_PIE, 1,
3582 [Define if your linker supports -pie option.])
3584 AC_MSG_RESULT($gcc_cv_ld_pie)
3586 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3587 gcc_cv_ld_eh_gc_sections=no
3588 if test $in_tree_ld = yes ; then
3589 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3590 && test $in_tree_ld_is_elf = yes; then
3591 gcc_cv_ld_eh_gc_sections=yes
3593 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3594 cat > conftest.s <<EOF
3597 .type _start, @function
3600 .size _start, .-_start
3601 .section .text.foo,"ax",@progbits
3602 .type foo, @function
3606 .section .gcc_except_table.foo,"a",@progbits
3609 .section .eh_frame,"a",@progbits
3612 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3613 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3614 | grep "gc-sections option ignored" > /dev/null; then
3615 gcc_cv_ld_eh_gc_sections=no
3616 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3617 gcc_cv_ld_eh_gc_sections=yes
3618 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3619 if test x$gcc_cv_as_comdat_group != xyes; then
3620 gcc_cv_ld_eh_gc_sections=no
3621 cat > conftest.s <<EOF
3624 .type _start, @function
3627 .size _start, .-_start
3628 .section .gnu.linkonce.t.foo,"ax",@progbits
3629 .type foo, @function
3633 .section .gcc_except_table.foo,"a",@progbits
3636 .section .eh_frame,"a",@progbits
3639 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3640 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3641 | grep "gc-sections option ignored" > /dev/null; then
3642 gcc_cv_ld_eh_gc_sections=no
3643 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3644 gcc_cv_ld_eh_gc_sections=yes
3650 rm -f conftest.s conftest.o conftest
3654 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3655 gcc_cv_ld_eh_gc_sections=no
3658 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3659 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3660 [Define if your linker supports garbage collection of
3661 sections in presence of EH frames.])
3663 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3669 AC_CACHE_CHECK(linker --as-needed support,
3670 gcc_cv_ld_as_needed,
3671 [gcc_cv_ld_as_needed=no
3672 if test $in_tree_ld = yes ; then
3673 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3674 && test $in_tree_ld_is_elf = yes; then
3675 gcc_cv_ld_as_needed=yes
3677 elif test x$gcc_cv_ld != x; then
3678 # Check if linker supports --as-needed and --no-as-needed options
3679 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3680 gcc_cv_ld_as_needed=yes
3684 if test x"$gcc_cv_ld_as_needed" = xyes; then
3685 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3686 [Define if your linker supports --as-needed and --no-as-needed options.])
3689 case "$target:$tm_file" in
3690 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3691 AC_CACHE_CHECK(linker support for omitting dot symbols,
3692 gcc_cv_ld_no_dot_syms,
3693 [gcc_cv_ld_no_dot_syms=no
3694 if test $in_tree_ld = yes ; then
3695 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3696 gcc_cv_ld_no_dot_syms=yes
3698 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3699 cat > conftest1.s <<EOF
3703 cat > conftest2.s <<EOF
3704 .section ".opd","aw"
3709 .quad .LEfoo,.TOC.@tocbase,0
3715 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3716 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3717 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3718 gcc_cv_ld_no_dot_syms=yes
3720 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3723 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3724 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3725 [Define if your PowerPC64 linker only needs function descriptor syms.])
3730 AC_CACHE_CHECK(linker --build-id support,
3732 [gcc_cv_ld_buildid=no
3733 if test $in_tree_ld = yes ; then
3734 if test "$gcc_cv_gld_major_version" -eq 2 -a \
3735 "$gcc_cv_gld_minor_version" -ge 18 -o \
3736 "$gcc_cv_gld_major_version" -gt 2 \
3737 && test $in_tree_ld_is_elf = yes; then
3738 gcc_cv_ld_buildid=yes
3740 elif test x$gcc_cv_ld != x; then
3741 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
3742 gcc_cv_ld_buildid=yes
3745 if test x"$gcc_cv_ld_buildid" = xyes; then
3746 AC_DEFINE(HAVE_LD_BUILDID, 1,
3747 [Define if your linker supports --build-id.])
3750 AC_ARG_ENABLE(linker-build-id,
3751 [ --enable-linker-build-id
3752 compiler will always pass --build-id to linker],
3754 enable_linker_build_id=no)
3756 if test x"$enable_linker_build_id" = xyes; then
3757 if test x"$gcc_cv_ld_buildid" = xyes; then
3758 AC_DEFINE(ENABLE_LD_BUILDID, 1,
3759 [Define if gcc should always pass --build-id to linker.])
3761 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
3765 AC_CACHE_CHECK(linker --sysroot support,
3767 [gcc_cv_ld_sysroot=no
3768 if test $in_tree_ld = yes ; then
3769 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3770 gcc_cv_ld_sysroot=yes
3772 elif test x$gcc_cv_ld != x; then
3773 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3774 gcc_cv_ld_sysroot=yes
3777 if test x"$gcc_cv_ld_sysroot" = xyes; then
3778 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3779 [Define if your linker supports --sysroot.])
3782 if test x$with_sysroot = x && test x$host = x$target \
3783 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3784 && test "$prefix" != "NONE"; then
3785 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3786 [Define to PREFIX/include if cpp should also search that directory.])
3789 # Test for stack protector support in target C library.
3790 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3791 gcc_cv_libc_provides_ssp,
3792 [gcc_cv_libc_provides_ssp=no
3794 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
3795 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3796 if test "x$with_sysroot" = x; then
3797 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3798 elif test "x$with_build_sysroot" != "x"; then
3799 glibc_header_dir="${with_build_sysroot}/usr/include"
3800 elif test "x$with_sysroot" = xyes; then
3801 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3803 glibc_header_dir="${with_sysroot}/usr/include"
3806 glibc_header_dir=/usr/include
3808 # glibc 2.4 and later provides __stack_chk_fail and
3809 # either __stack_chk_guard, or TLS access to stack guard canary.
3810 if test -f $glibc_header_dir/features.h \
3811 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3812 $glibc_header_dir/features.h > /dev/null; then
3813 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3814 $glibc_header_dir/features.h > /dev/null; then
3815 gcc_cv_libc_provides_ssp=yes
3816 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3817 $glibc_header_dir/features.h > /dev/null \
3818 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3819 $glibc_header_dir/features.h > /dev/null; then
3820 gcc_cv_libc_provides_ssp=yes
3821 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
3822 $glibc_header_dir/features.h > /dev/null && \
3823 test -f $glibc_header_dir/bits/uClibc_config.h && \
3824 $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
3825 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
3826 gcc_cv_libc_provides_ssp=yes
3831 # Avoid complicated tests (see
3832 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
3833 # simply assert that glibc does provide this, which is true for all
3834 # realistically usable GNU/Hurd configurations.
3835 gcc_cv_libc_provides_ssp=yes;;
3836 *-*-darwin* | *-*-freebsd*)
3837 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3838 [echo "no __stack_chk_fail on this target"])
3840 *) gcc_cv_libc_provides_ssp=no ;;
3843 if test x$gcc_cv_libc_provides_ssp = xyes; then
3844 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3845 [Define if your target C library provides stack protector support])
3848 # Check if TFmode long double should be used by default or not.
3849 # Some glibc targets used DFmode long double, but with glibc 2.4
3850 # and later they can use TFmode.
3852 powerpc*-*-linux* | \
3857 AC_ARG_WITH(long-double-128,
3858 [ --with-long-double-128 Use 128-bit long double by default.],
3859 gcc_cv_target_ldbl128="$with_long_double_128",
3860 [gcc_cv_target_ldbl128=no
3861 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3862 if test "x$with_sysroot" = x; then
3863 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3864 elif test "x$with_build_sysroot" != "x"; then
3865 glibc_header_dir="${with_build_sysroot}/usr/include"
3866 elif test "x$with_sysroot" = xyes; then
3867 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3869 glibc_header_dir="${with_sysroot}/usr/include"
3872 glibc_header_dir=/usr/include
3875 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3876 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3877 && gcc_cv_target_ldbl128=yes
3882 if test x$gcc_cv_target_ldbl128 = xyes; then
3883 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3884 [Define if TFmode long double should be the default])
3887 # Find out what GC implementation we want, or may, use.
3889 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3897 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3900 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3905 echo "Using $GGC for garbage collection."
3907 # Libraries to use on the host. This will normally be set by the top
3908 # level Makefile. Here we simply capture the value for our Makefile.
3909 if test -z "${HOST_LIBS+set}"; then
3914 # Use the system's zlib library.
3916 zlibinc="-I\$(srcdir)/../zlib"
3917 AC_ARG_WITH(system-zlib,
3918 [ --with-system-zlib use installed libz],
3925 dnl Very limited version of automake's enable-maintainer-mode
3927 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3928 dnl maintainer-mode is disabled by default
3929 AC_ARG_ENABLE(maintainer-mode,
3930 [ --enable-maintainer-mode
3931 enable make rules and dependencies not useful
3932 (and sometimes confusing) to the casual installer],
3933 maintainer_mode=$enableval,
3936 AC_MSG_RESULT($maintainer_mode)
3938 if test "$maintainer_mode" = "yes"; then
3949 # Make empty files to contain the specs and options for each language.
3950 # Then add #include lines to for a compiler that has specs and/or options.
3956 # These (without "all_") are set in each config-lang.in.
3957 # `language' must be a single word so is spelled singularly.
3960 all_outputs='Makefile gccbug'
3961 # List of language makefile fragments.
3963 # List of language subdirectory makefiles. Deprecated.
3965 # Additional files for gengtype
3966 all_gtfiles="$target_gtfiles"
3968 # These are the languages that are set in --enable-languages,
3969 # and are available in the GCC tree.
3970 all_selected_languages=
3972 # Add the language fragments.
3973 # Languages are added via two mechanisms. Some information must be
3974 # recorded in makefile variables, these are defined in config-lang.in.
3975 # We accumulate them and plug them into the main Makefile.
3976 # The other mechanism is a set of hooks for each of the main targets
3977 # like `clean', `install', etc.
3979 language_hooks="Make-hooks"
3981 for lang in ${srcdir}/*/config-lang.in
3984 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3986 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3987 if test "x$lang_alias" = x
3989 echo "$lang doesn't set \$language." 1>&2
3992 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3993 subdirs="$subdirs $subdir"
3995 # $gcc_subdir is where the gcc integration files are to be found
3996 # for a language, both for internal compiler purposes (compiler
3997 # sources implementing front-end to GCC tree converters), and for
3998 # build infrastructure purposes (Make-lang.in, etc.)
4000 # This will be <subdir> (relative to $srcdir) if a line like
4001 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4002 # is found in <langdir>/config-lang.in, and will remain <langdir>
4005 # Except for the language alias (fetched above), the regular
4006 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4007 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4008 # only this and the language alias.
4010 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4011 if [ "$gcc_subdir" = "" ]; then
4012 gcc_subdir="$subdir"
4015 case ",$enable_languages," in
4017 all_selected_languages="$all_selected_languages $lang_alias"
4018 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4019 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4031 . ${srcdir}/$gcc_subdir/config-lang.in
4032 if test "x$language" = x
4034 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4039 case ",$enable_languages," in
4042 for i in $subdir_requires; do
4043 test -f "${srcdir}/$i/config-lang.in" && continue
4051 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4052 if test -f $srcdir/$gcc_subdir/lang.opt; then
4053 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4055 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4056 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4058 if test -f ${srcdir}/$gcc_subdir/Makefile.in
4059 then all_lang_makefiles="$gcc_subdir/Makefile"
4061 all_languages="$all_languages $language"
4062 all_compilers="$all_compilers $compilers"
4063 all_outputs="$all_outputs $outputs"
4064 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4065 case ",$enable_languages," in
4067 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4069 AC_SUBST(enable_lto)
4075 # Pick up gtfiles for c
4077 . ${srcdir}/c-config-lang.in
4078 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4081 for language in $all_selected_languages
4083 check_languages="$check_languages check-$language"
4086 # We link each language in with a set of hooks, reached indirectly via
4087 # lang.${target}. Only do so for selected languages.
4091 target_list="all.cross start.encap rest.encap tags \
4092 install-common install-man install-info install-pdf dvi pdf \
4093 html uninstall info man srcextra srcman srcinfo \
4094 mostlyclean clean distclean maintainer-clean install-plugin"
4096 for t in $target_list
4099 for lang in $all_selected_languages
4103 echo "lang.$t: $x" >> Make-hooks
4112 echo "dir ." > .gdbinit
4113 echo "dir ${srcdir}" >> .gdbinit
4114 if test x$gdb_needs_out_file_path = xyes
4116 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4118 if test "x$subdirs" != x; then
4121 echo "dir ${srcdir}/$s" >> .gdbinit
4124 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4126 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4127 AC_SUBST(gcc_tooldir)
4130 # Find a directory in which to install a shared libgcc.
4132 AC_ARG_ENABLE(version-specific-runtime-libs,
4133 [ --enable-version-specific-runtime-libs
4134 specify that runtime libraries should be
4135 installed in a compiler-specific directory])
4137 AC_ARG_WITH(slibdir,
4138 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
4139 slibdir="$with_slibdir",
4140 if test "${enable_version_specific_runtime_libs+set}" = set; then
4141 slibdir='$(libsubdir)'
4142 elif test "$host" != "$target"; then
4143 slibdir='$(build_tooldir)/lib'
4149 # Substitute configuration variables
4152 AC_SUBST(all_compilers)
4153 AC_SUBST(all_gtfiles)
4154 AC_SUBST(all_lang_makefrags)
4155 AC_SUBST(all_lang_makefiles)
4156 AC_SUBST(all_languages)
4157 AC_SUBST(all_selected_languages)
4158 AC_SUBST(build_exeext)
4159 AC_SUBST(build_install_headers_dir)
4160 AC_SUBST(build_xm_file_list)
4161 AC_SUBST(build_xm_include_list)
4162 AC_SUBST(build_xm_defines)
4163 AC_SUBST(build_file_translate)
4164 AC_SUBST(check_languages)
4165 AC_SUBST(cpp_install_dir)
4166 AC_SUBST(xmake_file)
4167 AC_SUBST(tmake_file)
4168 AC_SUBST(TM_ENDIAN_CONFIG)
4169 AC_SUBST(TM_MULTILIB_CONFIG)
4170 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4171 AC_SUBST(extra_gcc_objs)
4172 AC_SUBST(extra_headers_list)
4173 AC_SUBST(extra_objs)
4174 AC_SUBST(extra_parts)
4175 AC_SUBST(extra_passes)
4176 AC_SUBST(extra_programs)
4177 AC_SUBST(float_h_file)
4178 AC_SUBST(gcc_config_arguments)
4179 AC_SUBST(gcc_gxx_include_dir)
4180 AC_SUBST(host_exeext)
4181 AC_SUBST(host_xm_file_list)
4182 AC_SUBST(host_xm_include_list)
4183 AC_SUBST(host_xm_defines)
4184 AC_SUBST(out_host_hook_obj)
4186 AC_SUBST(lang_opt_files)
4187 AC_SUBST(lang_specs_files)
4188 AC_SUBST(lang_tree_files)
4189 AC_SUBST(local_prefix)
4191 AC_SUBST(objc_boehm_gc)
4193 AC_SUBST(out_object_file)
4194 AC_SUBST(thread_file)
4195 AC_SUBST(tm_file_list)
4196 AC_SUBST(tm_include_list)
4197 AC_SUBST(tm_defines)
4198 AC_SUBST(tm_p_file_list)
4199 AC_SUBST(tm_p_include_list)
4200 AC_SUBST(xm_file_list)
4201 AC_SUBST(xm_include_list)
4202 AC_SUBST(xm_defines)
4203 AC_SUBST(use_gcc_stdint)
4204 AC_SUBST(c_target_objs)
4205 AC_SUBST(cxx_target_objs)
4206 AC_SUBST(fortran_target_objs)
4207 AC_SUBST(target_cpu_default)
4209 AC_SUBST_FILE(language_hooks)
4212 if test x${build} = x${host} ; then
4213 if test x${host} = x${target} ; then
4214 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4216 echo "Links are now set up to build a cross-compiler" 1>&2
4217 echo " from ${host} to ${target}." 1>&2
4220 if test x${host} = x${target} ; then
4221 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4222 echo " for ${target}." 1>&2
4224 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4225 echo " from ${host} to ${target}." 1>&2
4229 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4230 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4232 case "${GMPLIBS}" in
4233 *-lmpc*) AC_DEFINE(HAVE_mpc, 1, [Define if mpc is in use.]) ;;
4236 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4237 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4239 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4240 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4241 if test "x${CLOOGLIBS}" != "x" ; then
4242 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4245 AC_ARG_VAR(LIBELFLIBS,[How to link libelf])
4246 AC_ARG_VAR(LIBELFINC,[How to find libelf include files])
4247 if test "x${LIBELFLIBS}" != "x" ; then
4248 AC_DEFINE(HAVE_libelf, 1, [Define if libelf is in use.])
4251 # Check for plugin support
4252 AC_ARG_ENABLE(plugin,
4253 [ --enable-plugin enable plugin support],
4254 enable_plugin=$enableval,
4255 enable_plugin=yes; default_plugin=yes)
4258 if test x"$enable_plugin" = x"yes"; then
4259 # Check that the host supports -rdynamic and -ldl
4262 saved_LDFLAGS="$LDFLAGS"
4267 LDFLAGS="$LDFLAGS -rdynamic"
4268 AC_MSG_CHECKING([for -rdynamic])
4269 AC_TRY_LINK([],[return 0;],
4270 [AC_MSG_RESULT([yes]); have_rdynamic=yes],
4271 [AC_MSG_RESULT([no])])
4272 if test x"$have_rdynamic" = x"yes" ; then
4273 pluginlibs="-rdynamic"
4277 AC_SEARCH_LIBS([dlopen], [dl])
4278 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
4279 pluginlibs="$pluginlibs -ldl"
4282 # Check that we can build shared objects with -fPIC -shared
4283 LDFLAGS="$LDFLAGS -fPIC -shared"
4284 AC_MSG_CHECKING([for -fPIC -shared])
4286 [extern int X;],[return X == 0;],
4287 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
4288 [AC_MSG_RESULT([no]); have_pic_shared=no])
4289 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
4294 # If plugin support had been requested but not available, fail.
4295 if test x"$enable_plugin" = x"no" ; then
4296 if test x"$default_plugin" != x"yes"; then
4298 Building GCC with plugin support requires a host that supports
4299 -fPIC, -shared, -ldl and -rdynamic.])
4303 LDFLAGS="$saved_LDFLAGS"
4307 AC_SUBST(pluginlibs)
4308 AC_SUBST(enable_plugin)
4309 if test x"$enable_plugin" = x"yes"; then
4310 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
4313 # Configure the subdirectories
4314 # AC_CONFIG_SUBDIRS($subdirs)
4316 # Create the Makefile
4317 # and configure language subdirectories
4318 AC_CONFIG_FILES($all_outputs)
4320 AC_CONFIG_COMMANDS([default],
4322 case ${CONFIG_HEADERS} in
4323 *auto-host.h:config.in*)
4326 # Make sure all the subdirs exist.
4327 for d in $subdirs doc build
4329 test -d $d || mkdir $d
4332 [subdirs='$subdirs'])