2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
5 # 2007, 2008 Free Software Foundation, Inc.
7 #This file is part of GCC.
9 #GCC is free software; you can redistribute it and/or modify it under
10 #the terms of the GNU General Public License as published by the Free
11 #Software Foundation; either version 3, or (at your option) any later
14 #GCC is distributed in the hope that it will be useful, but WITHOUT
15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 #You should have received a copy of the GNU General Public License
20 #along with GCC; see the file COPYING3. If not see
21 #<http://www.gnu.org/licenses/>.
23 # --------------------------------
24 # Initialization and sanity checks
25 # --------------------------------
29 AC_CONFIG_SRCDIR(tree.c)
30 AC_CONFIG_HEADER(auto-host.h:config.in)
32 gcc_version=`cat $srcdir/BASE-VER`
34 # Determine the host, build, and target systems
39 # Determine the noncanonical target name, for directory use.
40 ACX_NONCANONICAL_TARGET
42 # Determine the target- and build-specific subdirectories
45 # Set program_transform_name
48 # Check for bogus environment variables.
49 # Test if LIBRARY_PATH contains the notation for the current directory
50 # since this would lead to problems installing/building glibc.
51 # LIBRARY_PATH contains the current directory if one of the following
53 # - one of the terminals (":" and ";") is the first or last sign
54 # - two terminals occur directly after each other
55 # - the path contains an element with a dot in it
56 AC_MSG_CHECKING(LIBRARY_PATH variable)
58 case ${LIBRARY_PATH} in
59 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
60 library_path_setting="contains current directory"
63 library_path_setting="ok"
67 AC_MSG_RESULT($library_path_setting)
68 if test "$library_path_setting" != "ok"; then
70 *** LIBRARY_PATH shouldn't contain the current directory when
71 *** building gcc. Please change the environment variable
72 *** and run configure again.])
75 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
76 # since this would lead to problems installing/building glibc.
77 # GCC_EXEC_PREFIX contains the current directory if one of the following
79 # - one of the terminals (":" and ";") is the first or last sign
80 # - two terminals occur directly after each other
81 # - the path contains an element with a dot in it
82 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
84 case ${GCC_EXEC_PREFIX} in
85 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
86 gcc_exec_prefix_setting="contains current directory"
89 gcc_exec_prefix_setting="ok"
93 AC_MSG_RESULT($gcc_exec_prefix_setting)
94 if test "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [ --with-local-prefix=DIR specifies directory to put local include],
109 [case "${withval}" in
110 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
112 *) local_prefix=$with_local_prefix ;;
115 # Default local prefix if it is empty
116 if test x$local_prefix = x; then
117 local_prefix=/usr/local
120 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
121 # passed in by the toplevel make and thus we'd get different behavior
122 # depending on where we built the sources.
124 # Specify the g++ header file directory
125 AC_ARG_WITH(gxx-include-dir,
126 [ --with-gxx-include-dir=DIR
127 specifies directory to put g++ header files],
128 [case "${withval}" in
129 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
131 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
134 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
135 if test x${gcc_gxx_include_dir} = x; then
136 if test x${enable_version_specific_runtime_libs} = xyes; then
137 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 libstdcxx_incdir='include/c++/$(version)'
140 if test x$host != x$target; then
141 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
143 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
147 AC_ARG_WITH(cpp_install_dir,
148 [ --with-cpp-install-dir=DIR
149 install the user visible C preprocessor in DIR
150 (relative to PREFIX) as well as PREFIX/bin],
151 [if test x$withval = xyes; then
152 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
153 elif test x$withval != xno; then
154 cpp_install_dir=$withval
157 # We would like to our source tree to be readonly. However when releases or
158 # pre-releases are generated, the flex/bison generated files as well as the
159 # various formats of manuals need to be included along with the rest of the
160 # sources. Therefore we have --enable-generated-files-in-srcdir to do
163 AC_MSG_CHECKING([whether to place generated files in the source directory])
164 dnl generated-files-in-srcdir is disabled by default
165 AC_ARG_ENABLE(generated-files-in-srcdir,
166 [ --enable-generated-files-in-srcdir
167 put copies of generated files in source dir
168 intended for creating source tarballs for users
169 without texinfo bison or flex.],
170 generated_files_in_srcdir=$enableval,
171 generated_files_in_srcdir=no)
173 AC_MSG_RESULT($generated_files_in_srcdir)
175 if test "$generated_files_in_srcdir" = "yes"; then
182 # -------------------
183 # Find default linker
184 # -------------------
188 [ --with-gnu-ld arrange to work with GNU ld.],
189 gnu_ld_flag="$with_gnu_ld",
192 # With pre-defined ld
194 [ --with-ld arrange to use the specified ld (full pathname)],
195 DEFAULT_LINKER="$with_ld")
196 if test x"${DEFAULT_LINKER+set}" = x"set"; then
197 if test ! -x "$DEFAULT_LINKER"; then
198 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
199 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
202 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
203 [Define to enable the use of a default linker.])
206 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
207 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
209 AC_MSG_CHECKING([whether a default linker was specified])
210 if test x"${DEFAULT_LINKER+set}" = x"set"; then
211 if test x"$gnu_ld_flag" = x"no"; then
212 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
214 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
220 # With demangler in GNU ld
221 AC_ARG_WITH(demangler-in-ld,
222 [ --with-demangler-in-ld try to use demangler in GNU ld.],
223 demangler_in_ld="$with_demangler_in_ld",
226 # ----------------------
227 # Find default assembler
228 # ----------------------
232 [ --with-gnu-as arrange to work with GNU as],
233 gas_flag="$with_gnu_as",
237 [ --with-as arrange to use the specified as (full pathname)],
238 DEFAULT_ASSEMBLER="$with_as")
239 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
240 if test ! -x "$DEFAULT_ASSEMBLER"; then
241 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
242 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
245 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
246 [Define to enable the use of a default assembler.])
249 gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
250 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
252 AC_MSG_CHECKING([whether a default assembler was specified])
253 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
254 if test x"$gas_flag" = x"no"; then
255 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
257 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
267 # If a non-executable a.out is present (e.g. created by GNU as above even if
268 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
269 # file, even when creating an executable, so an execution test fails.
270 # Remove possible default executable files to avoid this.
272 # FIXME: This really belongs into AC_PROG_CC and can be removed once
273 # Autoconf includes it.
274 rm -f a.out a.exe b.out
276 # Find the native compiler
279 ACX_PROG_GNAT([-I"$srcdir"/ada])
281 # autoconf is lame and doesn't give us any substitution variable for this.
282 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
283 NO_MINUS_C_MINUS_O=yes
285 OUTPUT_OPTION='-o $@'
287 AC_SUBST(NO_MINUS_C_MINUS_O)
288 AC_SUBST(OUTPUT_OPTION)
290 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
291 # optimizations to be activated explicitly by the toplevel.
294 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
298 # -------------------------
299 # Check C compiler features
300 # -------------------------
302 AC_USE_SYSTEM_EXTENSIONS
306 # sizeof(char) is 1 by definition.
307 AC_CHECK_SIZEOF(void *)
308 AC_CHECK_SIZEOF(short)
310 AC_CHECK_SIZEOF(long)
311 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
312 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
314 # ---------------------
315 # Warnings and checking
316 # ---------------------
318 # Check $CC warning features (if it's GCC).
319 # We want to use -pedantic, but we don't want warnings about
323 # So, we only use -pedantic if we can disable those warnings.
325 ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings -Wstrict-prototypes \
326 -Wmissing-prototypes -Wcast-qual -Wc++-compat], [loose_warn])
327 ACX_PROG_CC_WARNING_OPTS([-Wold-style-definition \
328 -Wmissing-format-attribute], [strict_warn])
329 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long -Wno-variadic-macros \
330 -Wno-overlength-strings], [strict_warn])
331 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
333 # The above macros do nothing if the compiler is not GCC. However, the
334 # Makefile has more goo to add other flags, so this variabl is used to
335 # enables warnings only for GCC.
337 if test "x$GCC" = "xyes"; then
338 warn_cflags='$(GCC_WARN_CFLAGS)'
340 AC_SUBST(warn_cflags)
342 # Enable expensive internal checks
344 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
348 AC_ARG_ENABLE(checking,
349 [ --enable-checking[=LIST]
350 enable expensive run-time checks. With LIST,
351 enable only specific categories of checks.
352 Categories are: yes,no,all,none,release.
353 Flags are: assert,df,fold,gc,gcac,misc,
354 rtlflag,rtl,runtime,tree,valgrind,types.],
355 [ac_checking_flags="${enableval}"],[
356 # Determine the default checks.
357 if test x$is_release = x ; then
358 ac_checking_flags=yes
360 ac_checking_flags=release
362 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
363 for check in release $ac_checking_flags
366 # these set all the flags to specific states
367 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
368 ac_fold_checking= ; ac_gc_checking=1 ;
369 ac_gc_always_collect= ; ac_rtl_checking= ;
370 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
371 ac_tree_checking=1 ; ac_valgrind_checking= ;
372 ac_types_checking=1 ;;
373 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
374 ac_fold_checking= ; ac_gc_checking= ;
375 ac_gc_always_collect= ; ac_rtl_checking= ;
376 ac_rtlflag_checking= ; ac_runtime_checking= ;
377 ac_tree_checking= ; ac_valgrind_checking= ;
378 ac_types_checking= ;;
379 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
380 ac_fold_checking=1 ; ac_gc_checking=1 ;
381 ac_gc_always_collect=1 ; ac_rtl_checking=1 ;
382 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
383 ac_tree_checking=1 ; ac_valgrind_checking= ;
384 ac_types_checking=1 ;;
385 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
386 ac_fold_checking= ; ac_gc_checking= ;
387 ac_gc_always_collect= ; ac_rtl_checking= ;
388 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
389 ac_tree_checking= ; ac_valgrind_checking= ;
390 ac_types_checking= ;;
391 # these enable particular checks
392 assert) ac_assert_checking=1 ;;
393 df) ac_df_checking=1 ;;
394 fold) ac_fold_checking=1 ;;
395 gc) ac_gc_checking=1 ;;
396 gcac) ac_gc_always_collect=1 ;;
397 misc) ac_checking=1 ;;
398 rtl) ac_rtl_checking=1 ;;
399 rtlflag) ac_rtlflag_checking=1 ;;
400 runtime) ac_runtime_checking=1 ;;
401 tree) ac_tree_checking=1 ;;
402 types) ac_types_checking=1 ;;
403 valgrind) ac_valgrind_checking=1 ;;
404 *) AC_MSG_ERROR(unknown check category $check) ;;
410 if test x$ac_checking != x ; then
411 AC_DEFINE(ENABLE_CHECKING, 1,
412 [Define if you want more run-time sanity checks. This one gets a grab
413 bag of miscellaneous but relatively cheap checks.])
414 nocommon_flag=-fno-common
416 AC_SUBST(nocommon_flag)
417 if test x$ac_df_checking != x ; then
418 AC_DEFINE(ENABLE_DF_CHECKING, 1,
419 [Define if you want more run-time sanity checks for dataflow.])
421 if test x$ac_assert_checking != x ; then
422 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
423 [Define if you want assertions enabled. This is a cheap check.])
425 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
426 if test x$ac_runtime_checking != x ; then
427 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
428 [Define if you want runtime assertions enabled. This is a cheap check.])
430 if test x$ac_tree_checking != x ; then
431 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
432 [Define if you want all operations on trees (the basic data
433 structure of the front ends) to be checked for dynamic type safety
434 at runtime. This is moderately expensive. The tree browser debugging
435 routines will also be enabled by this option.
437 TREEBROWSER=tree-browser.o
439 if test x$ac_types_checking != x ; then
440 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
441 [Define if you want all gimple types to be verified after gimplifiation.
445 AC_SUBST(TREEBROWSER)
446 if test x$ac_rtl_checking != x ; then
447 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
448 [Define if you want all operations on RTL (the basic data structure
449 of the optimizer and back end) to be checked for dynamic type safety
450 at runtime. This is quite expensive.])
452 if test x$ac_rtlflag_checking != x ; then
453 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
454 [Define if you want RTL flag accesses to be checked against the RTL
455 codes that are supported for each access macro. This is relatively
458 if test x$ac_gc_checking != x ; then
459 AC_DEFINE(ENABLE_GC_CHECKING, 1,
460 [Define if you want the garbage collector to do object poisoning and
461 other memory allocation checks. This is quite expensive.])
463 if test x$ac_gc_always_collect != x ; then
464 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
465 [Define if you want the garbage collector to operate in maximally
466 paranoid mode, validating the entire heap and collecting garbage at
467 every opportunity. This is extremely expensive.])
469 if test x$ac_fold_checking != x ; then
470 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
471 [Define if you want fold checked that it never destructs its argument.
472 This is quite expensive.])
474 valgrind_path_defines=
477 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
478 dnl # an if statement. This was the source of very frustrating bugs
479 dnl # in converting to autoconf 2.5x!
480 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
482 if test x$ac_valgrind_checking != x ; then
483 # It is certainly possible that there's valgrind but no valgrind.h.
484 # GCC relies on making annotations so we must have both.
485 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
486 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
487 [[#include <valgrind/memcheck.h>
488 #ifndef VALGRIND_DISCARD
489 #error VALGRIND_DISCARD not defined
491 [gcc_cv_header_valgrind_memcheck_h=yes],
492 [gcc_cv_header_valgrind_memcheck_h=no])
493 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
494 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
495 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
496 [[#include <memcheck.h>
497 #ifndef VALGRIND_DISCARD
498 #error VALGRIND_DISCARD not defined
500 [gcc_cv_header_memcheck_h=yes],
501 [gcc_cv_header_memcheck_h=no])
502 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
503 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
504 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
505 if test "x$valgrind_path" = "x" \
506 || (test $have_valgrind_h = no \
507 && test $gcc_cv_header_memcheck_h = no \
508 && test $gcc_cv_header_valgrind_memcheck_h = no); then
509 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
511 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
512 valgrind_command="$valgrind_path -q"
513 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
514 [Define if you want to run subprograms and generated programs
515 through valgrind (a memory checker). This is extremely expensive.])
516 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
517 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
518 [Define if valgrind's valgrind/memcheck.h header is installed.])
520 if test $gcc_cv_header_memcheck_h = yes; then
521 AC_DEFINE(HAVE_MEMCHECK_H, 1,
522 [Define if valgrind's memcheck.h header is installed.])
525 AC_SUBST(valgrind_path_defines)
526 AC_SUBST(valgrind_command)
528 # Enable code coverage collection
529 AC_ARG_ENABLE(coverage,
530 [ --enable-coverage[=LEVEL]
531 enable compiler's code coverage collection.
532 Use to measure compiler performance and locate
533 unused parts of the compiler. With LEVEL, specify
534 optimization. Values are opt, noopt,
536 [case "${enableval}" in
538 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
541 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
544 # a.k.a. --disable-coverage
548 AC_MSG_ERROR(unknown coverage setting $enableval)
552 AC_SUBST(coverage_flags)
554 AC_ARG_ENABLE(gather-detailed-mem-stats,
555 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
556 [enable_gather_detailed_mem_stats=no])
557 if test x$enable_gather_detailed_mem_stats = xyes ; then
558 AC_DEFINE(GATHER_STATISTICS, 1,
559 [Define to enable detailed memory allocation stats gathering.])
562 # -------------------------------
563 # Miscenalleous configure options
564 # -------------------------------
568 [ --with-stabs arrange to use stabs instead of host debug format],
572 # Determine whether or not multilibs are enabled.
573 AC_ARG_ENABLE(multilib,
574 [ --enable-multilib enable library support for multiple ABIs],
575 [], [enable_multilib=yes])
576 AC_SUBST(enable_multilib)
578 # Enable __cxa_atexit for C++.
579 AC_ARG_ENABLE(__cxa_atexit,
580 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
583 # Enable C extension for decimal float if target supports it.
584 AC_ARG_ENABLE(decimal-float,
585 [ --enable-decimal-float={no,yes,bid,dpd}
586 enable decimal float extension to C. Selecting 'bid'
587 or 'dpd' choses which decimal floating point format
590 case $enable_decimal_float in
591 yes | no | bid | dpd) ;;
592 *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
593 Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
598 powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
599 enable_decimal_float=yes
602 AC_MSG_WARN(decimal float is not supported for this target, ignored)
603 enable_decimal_float=no
608 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
609 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
610 [Define to 1 to enable decimal float extension to C.])
612 # x86's use BID format instead of DPD
613 case x$enable_decimal_float in
616 i?86*-*-linux* | x86_64*-*-linux*)
617 enable_decimal_float=bid
620 enable_decimal_float=dpd
625 # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
626 # dependency on libdecnumber.
627 enable_decimal_float=dpd
630 AC_SUBST(enable_decimal_float)
632 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
633 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
634 [Define to 1 to specify that we are using the BID decimal floating
635 point format instead of DPD])
637 # Enable C extension for fixed-point arithmetic.
638 AC_ARG_ENABLE(fixed-point,
639 [ --enable-fixed-point enable fixed-point arithmetic extension to C],
647 AC_MSG_WARN(fixed-point is not supported on IRIX, ignored)
648 enable_fixed_point=no
651 enable_fixed_point=yes
656 AC_MSG_WARN(fixed-point is not supported for this target, ignored)
657 enable_fixed_point=no
661 AC_SUBST(enable_fixed_point)
663 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
664 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
665 [Define to 1 to enable fixed-point arithmetic extension to C.])
668 # Pass with no value to take the default
669 # Pass with a value to specify a thread package
670 AC_ARG_ENABLE(threads,
671 [ --enable-threads enable thread usage for target GCC
672 --enable-threads=LIB use LIB thread package for target GCC],,
676 [ --enable-tls enable or disable generation of tls code
677 overriding the assembler check for tls support],
681 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
682 Valid choices are 'yes' and 'no'.]) ;;
686 AC_ARG_ENABLE(objc-gc,
687 [ --enable-objc-gc enable the use of Boehm's garbage collector with
688 the GNU Objective-C runtime],
689 if test x$enable_objc_gc = xno; then
697 [ --with-dwarf2 force the default debug format to be DWARF 2],
698 dwarf2="$with_dwarf2",
701 AC_ARG_ENABLE(shared,
702 [ --disable-shared don't provide a shared libgcc],
704 case $enable_shared in
708 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
709 for pkg in $enableval; do
710 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
717 ], [enable_shared=yes])
718 AC_SUBST(enable_shared)
720 AC_ARG_WITH(build-sysroot,
721 [ --with-build-sysroot=sysroot
722 use sysroot as the system root during the build])
725 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
727 case ${with_sysroot} in
728 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
729 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
732 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
733 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
735 if test "x$prefix" = xNONE; then
736 test_prefix=/usr/local
740 if test "x$exec_prefix" = xNONE; then
741 test_exec_prefix=$test_prefix
743 test_exec_prefix=$exec_prefix
745 case ${TARGET_SYSTEM_ROOT} in
746 "${test_prefix}"|"${test_prefix}/"*|\
747 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
748 '${prefix}'|'${prefix}/'*|\
749 '${exec_prefix}'|'${exec_prefix}/'*)
750 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
751 TARGET_SYSTEM_ROOT_DEFINE="$t"
756 TARGET_SYSTEM_ROOT_DEFINE=
757 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
759 AC_SUBST(TARGET_SYSTEM_ROOT)
760 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
761 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
763 # Build with intermodule optimisations
764 AC_ARG_ENABLE(intermodule,
765 [ --enable-intermodule build the compiler in one step],
766 [case ${enable_intermodule} in
767 yes) onestep="-onestep";;
773 ACX_PKGVERSION([GCC])
774 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
776 # Sanity check enable_languages in case someone does not run the toplevel
777 # configure # script.
778 AC_ARG_ENABLE(languages,
779 [ --enable-languages=LIST specify which front-ends to build],
780 [case ,${enable_languages}, in
782 # go safe -- we cannot be much sure without the toplevel
784 # analysis of which target libs are present and usable
788 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
793 enable_languages=c,${enable_languages}
796 [enable_languages=c])
798 # Used by documentation targets
799 AC_SUBST(datarootdir)
803 # -------------------------
804 # Checks for other programs
805 # -------------------------
809 # Find some useful tools
811 # We need awk to create options.c and options.h.
812 # Bail out if it's missing.
814 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
822 # By default, the Darwin ranlib will not treat common symbols as
823 # definitions when building the archive table of contents. Other
824 # ranlibs do that; pass an option to the Darwin ranlib that makes
825 # it behave similarly.
831 AC_SUBST(ranlib_flags)
835 # See if cmp has --ignore-initial.
836 gcc_AC_PROG_CMP_IGNORE_INITIAL
838 # See if we have the mktemp command.
839 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
841 # See if makeinfo has been installed and is modern enough
842 # that we can use it.
843 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
844 [GNU texinfo.* \([0-9][0-9.]*\)],
845 [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
846 if test $gcc_cv_prog_makeinfo_modern = no; then
848 *** Makeinfo is missing or too old.
849 *** Info documentation will not be built.])
856 # Is pod2man recent enough to regenerate manpages?
857 AC_MSG_CHECKING([for recent Pod::Man])
858 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
860 GENERATED_MANPAGES=generated-manpages
865 AC_SUBST(GENERATED_MANPAGES)
867 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
870 dnl Don't use AC_PROG_LEX; we insist on flex.
871 dnl LEXLIB is not useful in gcc.
872 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
875 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
877 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
878 # check for build == host before using them.
881 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
882 && test -d ../binutils ; then
883 NM='$(objdir)/../binutils/nm-new'
885 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
889 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
890 && test -d ../binutils ; then
891 AR='$(objdir)/../binutils/ar'
893 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
897 # --------------------
898 # Checks for C headers
899 # --------------------
901 # Need to reject headers which give warnings, so that the -Werror bootstrap
902 # works later. *sigh* This needs to come before all header checks.
909 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
910 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
911 sys/resource.h sys/param.h sys/times.h sys/stat.h \
912 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
914 # Check for thread headers.
915 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
916 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
918 # These tests can't be done till we know if we have limits.h.
927 # These libraries may be used by collect2.
928 # We may need a special search path to get them linked.
929 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
931 for libs in '' -lld -lmld \
932 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
933 '-L/usr/lib/cmplrs/cc3.11 -lmld'
936 AC_TRY_LINK_FUNC(ldopen,
937 [gcc_cv_collect2_libs="$libs"; break])
940 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
941 case $gcc_cv_collect2_libs in
943 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
945 AC_SUBST(COLLECT2_LIBS)
947 # When building Ada code on Alpha, we need exc_resume which is usually in
948 # -lexc. So test for it.
951 AC_SEARCH_LIBS(exc_resume, exc)
954 AC_SUBST(GNAT_LIBEXC)
956 # Some systems put ldexp and frexp in libm instead of libc; assume
957 # they're both in the same place. jcf-dump needs them.
960 AC_SEARCH_LIBS(ldexp, m)
965 # Use <inttypes.h> only if it exists,
966 # doesn't clash with <sys/types.h>, and declares intmax_t.
967 AC_MSG_CHECKING(for inttypes.h)
968 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
969 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
970 [[#include <sys/types.h>
971 #include <inttypes.h>]],
972 [[intmax_t i = -1;]])],
973 [gcc_cv_header_inttypes_h=yes],
974 [gcc_cv_header_inttypes_h=no])])
975 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
976 if test $gcc_cv_header_inttypes_h = yes; then
977 AC_DEFINE(HAVE_INTTYPES_H, 1,
978 [Define if you have a working <inttypes.h> header file.])
981 dnl Disabled until we have a complete test for buggy enum bitfields.
982 dnl gcc_AC_C_ENUM_BF_UNSIGNED
984 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
985 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
986 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
987 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
988 putchar_unlocked putc_unlocked)
989 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
990 sysconf strsignal getrusage nl_langinfo scandir alphasort \
991 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
994 if test x$ac_cv_func_mbstowcs = xyes; then
995 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
996 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1002 [gcc_cv_func_mbstowcs_works=yes],
1003 [gcc_cv_func_mbstowcs_works=no],
1004 [gcc_cv_func_mbstowcs_works=yes])])
1005 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1006 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1007 [Define this macro if mbstowcs does not crash when its
1008 first argument is NULL.])
1012 AC_CHECK_TYPE(ssize_t, int)
1014 # Try to determine the array type of the second argument of getgroups
1015 # for the target system (int or gid_t).
1017 if test "${target}" = "${build}"; then
1018 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1021 # This condition may need some tweaking. It should include all
1022 # targets where the array type of the second argument of getgroups
1023 # is int and the type of gid_t is not equivalent to int.
1024 *-*-sunos* | *-*-ultrix*)
1025 TARGET_GETGROUPS_T=int
1028 TARGET_GETGROUPS_T=gid_t
1032 AC_SUBST(TARGET_GETGROUPS_T)
1034 gcc_AC_FUNC_MMAP_BLACKLIST
1038 # Under VMS, vfork works very differently than on Unix. The standard test
1039 # won't work, and it isn't easily adaptable. It makes more sense to
1041 ac_cv_func_vfork_works=yes
1047 # Until we have in-tree GNU iconv:
1049 AC_SUBST(LIBICONV_DEP)
1055 # We will need to find libiberty.h and ansidecl.h
1056 saved_CFLAGS="$CFLAGS"
1057 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1058 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1059 strsignal strstr strverscmp \
1060 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1061 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1062 #include "ansidecl.h"
1063 #include "system.h"])
1065 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1066 #include "ansidecl.h"
1068 #ifdef HAVE_SYS_RESOURCE_H
1069 #include <sys/resource.h>
1073 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1074 #include "ansidecl.h"
1076 #ifdef HAVE_SYS_RESOURCE_H
1077 #include <sys/resource.h>
1079 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1080 [Define to `long' if <sys/resource.h> doesn't define.])])
1082 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1083 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1084 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1085 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1086 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1087 #include "ansidecl.h"
1096 gcc_AC_CHECK_DECLS(times, , ,[
1097 #include "ansidecl.h"
1099 #ifdef HAVE_SYS_TIMES_H
1100 #include <sys/times.h>
1104 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1105 #include "ansidecl.h"
1110 # More time-related stuff.
1111 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1112 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1113 #include "ansidecl.h"
1115 #ifdef HAVE_SYS_TIMES_H
1116 #include <sys/times.h>
1118 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1119 if test $ac_cv_struct_tms = yes; then
1120 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1121 [Define if <sys/times.h> defines struct tms.])
1124 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1125 # revisit after autoconf 2.50.
1126 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1127 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1128 #include "ansidecl.h"
1130 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1131 if test $gcc_cv_type_clock_t = yes; then
1132 AC_DEFINE(HAVE_CLOCK_T, 1,
1133 [Define if <time.h> defines clock_t.])
1136 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1137 CFLAGS="$saved_CFLAGS"
1139 gcc_AC_INITFINI_ARRAY
1141 # mkdir takes a single argument on some systems.
1142 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1150 # With Setjmp/Longjmp based exception handling.
1151 AC_ARG_ENABLE(sjlj-exceptions,
1152 [ --enable-sjlj-exceptions
1153 arrange to use setjmp/longjmp exception handling],
1156 if test $enableval != yes; then
1157 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1162 force_sjlj_exceptions=yes],
1165 force_sjlj_exceptions=yes
1169 force_sjlj_exceptions=no
1172 if test $force_sjlj_exceptions = yes; then
1173 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1174 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1175 [Define 0/1 to force the choice for exception handling model.])
1178 # For platforms with the unwind ABI which includes an unwind library,
1179 # libunwind, we can choose to use the system libunwind.
1180 AC_ARG_WITH(system-libunwind,
1181 [ --with-system-libunwind use installed libunwind])
1183 # config.gcc also contains tests of with_system_libunwind.
1184 if test x$with_system_libunwind = xyes; then
1185 AC_DEFINE(HAVE_GETIPINFO, 1,
1186 [Define to 1 if system unwind library has _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.])
1414 if test x$with_system_libunwind = xyes; then
1415 if test x$host = x$target; then
1416 AC_SEARCH_LIBS(_Unwind_GetIPInfo, unwind,, [use_getipinfo=no])
1419 GCC_TARGET_TEMPLATE(HAVE_GETIPINFO)
1420 if test x$use_getipinfo = xyes; then
1421 AC_DEFINE(HAVE_GETIPINFO, 1,
1422 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1424 echo "The system unwind library does not support _Unwind_GetIPInfo."
1427 # Look for a file containing extra machine modes.
1428 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1429 extra_modes_file='$(srcdir)'/config/${extra_modes}
1430 AC_SUBST(extra_modes_file)
1431 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1432 [Define to the name of a file containing a list of extra machine modes
1433 for this architecture.])
1436 # Convert extra_options into a form suitable for Makefile use.
1438 for f in $extra_options; do
1439 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1441 AC_SUBST(extra_opt_files)
1443 # auto-host.h is the file containing items generated by autoconf and is
1444 # the first file included by config.h.
1445 # If host=build, it is correct to have bconfig include auto-host.h
1446 # as well. If host!=build, we are in error and need to do more
1447 # work to find out the build config parameters.
1448 if test x$host = x$build
1450 build_auto=auto-host.h
1452 # We create a subdir, then run autoconf in the subdir.
1453 # To prevent recursion we set host and build for the new
1454 # invocation of configure to the build for this invocation
1461 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1462 *) realsrcdir=../${srcdir};;
1464 saved_CFLAGS="${CFLAGS}"
1465 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1466 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1467 ${realsrcdir}/configure \
1468 --enable-languages=${enable_languages-all} \
1469 --target=$target_alias --host=$build_alias --build=$build_alias
1470 CFLAGS="${saved_CFLAGS}"
1472 # We just finished tests for the build machine, so rename
1473 # the file auto-build.h in the gcc directory.
1474 mv auto-host.h ../auto-build.h
1477 build_auto=auto-build.h
1479 AC_SUBST(build_subdir)
1481 tm_file="${tm_file} defaults.h"
1482 tm_p_file="${tm_p_file} tm-preds.h"
1483 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1484 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1485 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1486 # put this back in temporarily.
1487 xm_file="auto-host.h ansidecl.h ${xm_file}"
1494 # Compile in configure arguments.
1495 if test -f configargs.h ; then
1496 # Being re-configured.
1497 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1498 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1500 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1503 # Double all backslashes and backslash all quotes to turn
1504 # gcc_config_arguments into a C string.
1505 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1506 $gcc_config_arguments
1508 gcc_config_arguments_str=`cat conftest.out`
1511 cat > configargs.h <<EOF
1512 /* Generated automatically. */
1513 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1514 static const char thread_model[] = "$thread_file";
1516 static const struct {
1517 const char *name, *value;
1518 } configure_default_options[] = $configure_default_options;
1522 # Internationalization
1523 ZW_GNU_GETTEXT_SISTER_DIR
1525 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1526 # -liconv on the link line twice.
1527 case "$LIBINTL" in *$LIBICONV*)
1531 AC_ARG_ENABLE(secureplt,
1532 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1536 [ --enable-cld enable -mcld by default for 32bit x86], [],
1539 # Windows32 Registry support for specifying GCC installation paths.
1540 AC_ARG_ENABLE(win32-registry,
1541 [ --disable-win32-registry
1542 disable lookup of installation paths in the
1543 Registry on Windows hosts
1544 --enable-win32-registry enable registry lookup (default)
1545 --enable-win32-registry=KEY
1546 use KEY instead of GCC version as the last portion
1547 of the registry key],,)
1550 win32 | pe | cygwin* | mingw32* | uwin*)
1551 if test "x$enable_win32_registry" != xno; then
1552 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1555 if test "x$enable_win32_registry" != xno; then
1556 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1557 [Define to 1 if installation paths should be looked up in the Windows
1558 Registry. Ignored on non-Windows hosts.])
1560 if test "x$enable_win32_registry" != xyes \
1561 && test "x$enable_win32_registry" != x; then
1562 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1563 [Define to be the last component of the Windows registry key under which
1564 to look for installation paths. The full key used will be
1565 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1566 The default is the GCC version number.])
1572 # Get an absolute path to the GCC top-level source directory
1573 holddir=`${PWDCMD-pwd}`
1575 topdir=`${PWDCMD-pwd}`
1578 # Conditionalize the makefile for this host machine.
1580 for f in ${host_xmake_file}
1582 if test -f ${srcdir}/config/$f
1584 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1588 # Conditionalize the makefile for this target machine.
1590 for f in ${tmake_file}
1592 if test -f ${srcdir}/config/$f
1594 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1597 tmake_file="${tmake_file_}"
1599 # This is a terrible hack which will go away some day.
1600 host_cc_for_libada=${CC}
1601 AC_SUBST(host_cc_for_libada)
1603 out_object_file=`basename $out_file .c`.o
1605 tm_file_list="options.h"
1606 tm_include_list="options.h"
1607 for f in $tm_file; do
1610 f=`echo $f | sed 's/^..//'`
1611 tm_file_list="${tm_file_list} $f"
1612 tm_include_list="${tm_include_list} $f"
1615 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1616 tm_include_list="${tm_include_list} $f"
1619 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1620 tm_include_list="${tm_include_list} config/$f"
1627 for f in $tm_p_file; do
1630 tm_p_file_list="${tm_p_file_list} $f"
1631 tm_p_include_list="${tm_p_include_list} $f"
1634 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1635 tm_p_include_list="${tm_p_include_list} config/$f"
1641 for f in $xm_file; do
1644 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1645 xm_include_list="${xm_include_list} $f"
1648 xm_file_list="${xm_file_list} $f"
1649 xm_include_list="${xm_include_list} $f"
1652 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1653 xm_include_list="${xm_include_list} config/$f"
1659 host_xm_include_list=
1660 for f in $host_xm_file; do
1663 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1664 host_xm_include_list="${host_xm_include_list} $f"
1667 host_xm_file_list="${host_xm_file_list} $f"
1668 host_xm_include_list="${host_xm_include_list} $f"
1671 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1672 host_xm_include_list="${host_xm_include_list} config/$f"
1678 for f in $build_xm_file; do
1681 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1682 build_xm_include_list="${build_xm_include_list} $f"
1684 auto-build.h | auto-host.h )
1685 build_xm_file_list="${build_xm_file_list} $f"
1686 build_xm_include_list="${build_xm_include_list} $f"
1689 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1690 build_xm_include_list="${build_xm_include_list} config/$f"
1695 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1696 # cross-compiler which does not use the native headers and libraries.
1697 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1698 CROSS= AC_SUBST(CROSS)
1699 ALL=all.internal AC_SUBST(ALL)
1700 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1702 if test "x$with_build_sysroot" != x; then
1703 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1705 # This value is used, even on a native system, because
1706 # CROSS_SYSTEM_HEADER_DIR is just
1707 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1708 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1711 if test x$host != x$target
1713 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1715 SYSTEM_HEADER_DIR=$build_system_header_dir
1716 case "$host","$target" in
1717 # Darwin crosses can use the host system's libraries and headers,
1718 # because of the fat library support. Of course, it must be the
1719 # same version of Darwin on both sides. Allow the user to
1720 # just say --target=foo-darwin without a version number to mean
1721 # "the version on this system".
1722 *-*-darwin*,*-*-darwin*)
1723 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1724 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1725 if test $hostos = $targetos -o $targetos = darwin ; then
1727 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1732 i?86-*-*,x86_64-*-* \
1733 | powerpc*-*-*,powerpc64*-*-*)
1734 CROSS="$CROSS -DNATIVE_CROSS" ;;
1736 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1737 SYSTEM_HEADER_DIR=$build_system_header_dir
1740 # If this is a cross-compiler that does not
1741 # have its own set of headers then define
1744 # If this is using newlib, without having the headers available now,
1745 # then define inhibit_libc in LIBGCC2_CFLAGS.
1746 # This prevents libgcc2 from containing any code which requires libc
1748 : ${inhibit_libc=false}
1749 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1750 test x$with_newlib = xyes ; } &&
1751 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1754 AC_SUBST(inhibit_libc)
1756 # When building gcc with a cross-compiler, we need to adjust things so
1757 # that the generator programs are still built with the native compiler.
1758 # Also, we cannot run fixincludes or fix-header.
1760 # These are the normal (build=host) settings:
1761 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1762 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1763 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1764 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1766 # Possibly disable fixproto, on a per-target basis.
1767 case ${use_fixproto} in
1772 STMP_FIXPROTO=stmp-fixproto
1775 AC_SUBST(STMP_FIXPROTO)
1777 # And these apply if build != host, or we are generating coverage data
1778 if test x$build != x$host || test "x$coverage_flags" != x
1780 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1781 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1783 if test "x$TARGET_SYSTEM_ROOT" = x; then
1784 if test "x$STMP_FIXPROTO" != x; then
1785 STMP_FIXPROTO=stmp-install-fixproto
1790 # Expand extra_headers to include complete path.
1791 # This substitutes for lots of t-* files.
1793 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1794 for file in ${extra_headers} ; do
1795 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1798 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1799 if test x"$use_gcc_tgmath" = xyes
1800 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1803 # Define collect2 in Makefile.
1804 case $host_can_use_collect2 in
1806 *) collect2='collect2$(exeext)' ;;
1808 AC_SUBST([collect2])
1810 # Add a definition of USE_COLLECT2 if system wants one.
1811 case $use_collect2 in
1812 no) use_collect2= ;;
1815 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1816 xm_defines="${xm_defines} USE_COLLECT2"
1817 case $host_can_use_collect2 in
1819 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1825 # ---------------------------
1826 # Assembler & linker features
1827 # ---------------------------
1829 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1830 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1831 # However when ld-new is first executed from the build tree, libtool will
1832 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1833 # to the build tree. While doing this we need to use the previous-stage
1834 # linker, or we have an infinite loop. The presence of a shell script as
1835 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1836 # the gcc/collect-ld script. So we need to know how libtool works, or
1837 # exec-tool will fail.
1839 m4_defun([_LT_CONFIG_COMMANDS], [])
1842 AC_SUBST(enable_fast_install)
1844 # Identify the assembler which will work hand-in-glove with the newly
1845 # built GCC, so that we can examine its features. This is the assembler
1846 # which will be driven by the driver program.
1848 # If build != host, and we aren't building gas in-tree, we identify a
1849 # build->target assembler and hope that it will have the same features
1850 # as the host->target assembler we'll be using.
1851 gcc_cv_gas_major_version=
1852 gcc_cv_gas_minor_version=
1853 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1855 m4_pattern_allow([AS_FOR_TARGET])dnl
1856 AS_VAR_SET_IF(gcc_cv_as,, [
1857 if test -x "$DEFAULT_ASSEMBLER"; then
1858 gcc_cv_as="$DEFAULT_ASSEMBLER"
1859 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1860 && test -f ../gas/Makefile \
1861 && test x$build = x$host; then
1862 gcc_cv_as=../gas/as-new$build_exeext
1863 elif test -x as$build_exeext; then
1864 # Build using assembler in the current directory.
1865 gcc_cv_as=./as$build_exeext
1866 elif test -x $AS_FOR_TARGET; then
1867 gcc_cv_as="$AS_FOR_TARGET"
1869 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1872 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1873 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1874 case "$ORIGINAL_AS_FOR_TARGET" in
1875 ./as | ./as$build_exeext) ;;
1876 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1879 AC_MSG_CHECKING(what assembler to use)
1880 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1881 # Single tree build which includes gas. We want to prefer it
1882 # over whatever linker top-level may have detected, since
1883 # we'll use what we're building after installation anyway.
1884 AC_MSG_RESULT(newly built gas)
1886 _gcc_COMPUTE_GAS_VERSION
1887 in_tree_gas_is_elf=no
1888 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1889 || (grep 'obj_format = multi' ../gas/Makefile \
1890 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1892 in_tree_gas_is_elf=yes
1895 AC_MSG_RESULT($gcc_cv_as)
1899 # Identify the linker which will work hand-in-glove with the newly
1900 # built GCC, so that we can examine its features. This is the linker
1901 # which will be driven by the driver program.
1903 # If build != host, and we aren't building gas in-tree, we identify a
1904 # build->target linker and hope that it will have the same features
1905 # as the host->target linker we'll be using.
1906 gcc_cv_gld_major_version=
1907 gcc_cv_gld_minor_version=
1908 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1909 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1911 AS_VAR_SET_IF(gcc_cv_ld,, [
1912 if test -x "$DEFAULT_LINKER"; then
1913 gcc_cv_ld="$DEFAULT_LINKER"
1914 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1915 && test -f ../ld/Makefile \
1916 && test x$build = x$host; then
1917 gcc_cv_ld=../ld/ld-new$build_exeext
1918 elif test -x collect-ld$build_exeext; then
1919 # Build using linker in the current directory.
1920 gcc_cv_ld=./collect-ld$build_exeext
1921 elif test -x $LD_FOR_TARGET; then
1922 gcc_cv_ld="$LD_FOR_TARGET"
1924 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1927 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1928 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1929 case "$ORIGINAL_LD_FOR_TARGET" in
1930 ./collect-ld | ./collect-ld$build_exeext) ;;
1931 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1934 AC_MSG_CHECKING(what linker to use)
1935 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1936 # Single tree build which includes ld. We want to prefer it
1937 # over whatever linker top-level may have detected, since
1938 # we'll use what we're building after installation anyway.
1939 AC_MSG_RESULT(newly built ld)
1941 in_tree_ld_is_elf=no
1942 if (grep 'EMUL = .*elf' ../ld/Makefile \
1943 || grep 'EMUL = .*linux' ../ld/Makefile \
1944 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1945 in_tree_ld_is_elf=yes
1947 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
1950 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1951 if test x$gcc_cv_gld_version != x; then
1955 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1956 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1959 AC_MSG_RESULT($gcc_cv_ld)
1963 # Figure out what nm we will be using.
1964 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1965 AS_VAR_SET_IF(gcc_cv_nm,, [
1966 if test -f $gcc_cv_binutils_srcdir/configure.in \
1967 && test -f ../binutils/Makefile \
1968 && test x$build = x$host; then
1969 gcc_cv_nm=../binutils/nm-new$build_exeext
1970 elif test -x nm$build_exeext; then
1971 gcc_cv_nm=./nm$build_exeext
1972 elif test -x $NM_FOR_TARGET; then
1973 gcc_cv_nm="$NM_FOR_TARGET"
1975 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1978 AC_MSG_CHECKING(what nm to use)
1979 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1980 # Single tree build which includes binutils.
1981 AC_MSG_RESULT(newly built nm)
1984 AC_MSG_RESULT($gcc_cv_nm)
1988 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1989 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1990 case "$ORIGINAL_NM_FOR_TARGET" in
1991 ./nm | ./nm$build_exeext) ;;
1992 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
1996 # Figure out what objdump we will be using.
1997 AS_VAR_SET_IF(gcc_cv_objdump,, [
1998 if test -f $gcc_cv_binutils_srcdir/configure.in \
1999 && test -f ../binutils/Makefile \
2000 && test x$build = x$host; then
2001 # Single tree build which includes binutils.
2002 gcc_cv_objdump=../binutils/objdump$build_exeext
2003 elif test -x objdump$build_exeext; then
2004 gcc_cv_objdump=./objdump$build_exeext
2005 elif test -x $OBJDUMP_FOR_TARGET; then
2006 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2008 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2011 AC_MSG_CHECKING(what objdump to use)
2012 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2013 # Single tree build which includes binutils.
2014 AC_MSG_RESULT(newly built objdump)
2015 elif test x$gcc_cv_objdump = x; then
2016 AC_MSG_RESULT(not found)
2018 AC_MSG_RESULT($gcc_cv_objdump)
2021 # Figure out what assembler alignment features are present.
2022 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2026 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2027 [Define if your assembler supports .balign and .p2align.])])
2029 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2032 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2033 [Define if your assembler supports specifying the maximum number
2034 of bytes to skip when using the GAS .p2align command.])])
2036 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2039 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2040 [Define if your assembler supports .literal16.])])
2042 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2044 [conftest_label1: .word 0
2046 conftest_label2: .word 0
2048 [if test x$gcc_cv_nm != x; then
2049 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2050 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2051 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2053 else gcc_cv_as_subsection_m1=yes
2055 rm -f conftest.nm1 conftest.nm2
2057 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2058 [Define if your assembler supports .subsection and .subsection -1 starts
2059 emitting at the beginning of your section.])])
2061 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2064 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2066 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2068 [ .weakref foobar, barfnot],,
2069 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2071 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2074 .NSUBSPA $CODE$,COMDAT],,
2075 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2077 # .hidden needs to be supported in both the assembler and the linker,
2078 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2079 # This is irritatingly difficult to feature test for; we have to check the
2080 # date string after the version number. If we've got an in-tree
2081 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2083 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2084 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2089 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2090 [if test $in_tree_ld = yes ; then
2092 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2093 && test $in_tree_ld_is_elf = yes; then
2094 gcc_cv_ld_hidden=yes
2097 gcc_cv_ld_hidden=yes
2098 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2099 if echo "$ld_ver" | grep GNU > /dev/null; then
2101 ld_vers=`echo $ld_ver | sed -n \
2102 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2103 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2104 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2105 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2106 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2107 if test 0"$ld_date" -lt 20020404; then
2108 if test -n "$ld_date"; then
2109 # If there was date string, but was earlier than 2002-04-04, fail
2111 elif test -z "$ld_vers"; then
2112 # If there was no date string nor ld version number, something is wrong
2115 test -z "$ld_vers_patch" && ld_vers_patch=0
2116 if test "$ld_vers_major" -lt 2; then
2118 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2119 gcc_cv_ld_hidden="no"
2120 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2128 hppa64*-*-hpux* | ia64*-*-hpux*)
2129 gcc_cv_ld_hidden=yes
2137 libgcc_visibility=no
2138 AC_SUBST(libgcc_visibility)
2139 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2140 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2141 libgcc_visibility=yes
2142 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2143 [Define if your assembler and linker support .hidden.])
2146 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2147 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2155 [# GAS versions before 2.11 do not support uleb128,
2156 # despite appearing to.
2157 # ??? There exists an elf-specific test that will crash
2158 # the assembler. Perhaps it's better to figure out whether
2159 # arbitrary sections are supported and try the test.
2160 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2161 if echo "$as_ver" | grep GNU > /dev/null; then
2163 as_vers=`echo $as_ver | sed -n \
2164 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2165 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2166 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2168 if test $as_major -eq 2 && test $as_minor -lt 11
2170 else gcc_cv_as_leb128=yes
2173 [AC_DEFINE(HAVE_AS_LEB128, 1,
2174 [Define if your assembler supports .sleb128 and .uleb128.])])
2176 # GAS versions up to and including 2.11.0 may mis-optimize
2178 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2186 .section .eh_frame,"aw",@progbits
2188 .4byte .LECIE1-.LSCIE1
2202 .4byte .LEFDE1-.LASFDE1
2204 .4byte .LASFDE1-__FRAME_BEGIN__
2212 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2213 cat > conftest.lit <<EOF
2214 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2215 0010 01000000 12000000 18000000 00000000 ................
2216 0020 08000000 04080000 0044 .........D @&t@
2218 cat > conftest.big <<EOF
2219 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2220 0010 00000001 00000012 00000018 00000000 ................
2221 0020 00000008 04000000 0844 .........D @&t@
2223 # If the assembler didn't choke, and we can objdump,
2224 # and we got the correct data, then succeed.
2225 # The text in the here-document typically retains its unix-style line
2226 # endings, while the output of objdump will use host line endings.
2227 # Therefore, use diff -b for the comparisons.
2228 if test x$gcc_cv_objdump != x \
2229 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2230 | tail -3 > conftest.got \
2231 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2232 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2234 gcc_cv_as_eh_frame=yes
2235 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2236 gcc_cv_as_eh_frame=buggy
2238 # Uh oh, what do we do now?
2239 gcc_cv_as_eh_frame=no
2242 if test $gcc_cv_as_eh_frame = buggy; then
2243 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2244 [Define if your assembler mis-optimizes .eh_frame data.])
2247 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2248 [elf,2,12,0], [--fatal-warnings],
2249 [.section .rodata.str, "aMS", @progbits, 1])
2250 if test $gcc_cv_as_shf_merge = no; then
2251 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2252 [elf,2,12,0], [--fatal-warnings],
2253 [.section .rodata.str, "aMS", %progbits, 1])
2255 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2256 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2257 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2259 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2260 [elf,2,16,0], [--fatal-warnings],
2261 [.section .text,"axG",@progbits,.foo,comdat])
2262 if test $gcc_cv_as_comdat_group = yes; then
2263 gcc_cv_as_comdat_group_percent=no
2265 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2266 [elf,2,16,0], [--fatal-warnings],
2267 [.section .text,"axG",%progbits,.foo,comdat])
2269 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2271 if test 0"$ld_date" -lt 20050308; then
2272 if test -n "$ld_date"; then
2273 # If there was date string, but was earlier than 2005-03-08, fail
2275 elif test "$ld_vers_major" -lt 2; then
2277 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2282 # assume linkers other than GNU ld don't support COMDAT group
2285 if test $comdat_group = no; then
2286 gcc_cv_as_comdat_group=no
2287 gcc_cv_as_comdat_group_percent=no
2289 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2290 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2291 [Define 0/1 if your assembler and linker support COMDAT groups.])
2293 # Thread-local storage - the check is heavily parametrized.
2302 .section ".tdata","awT",@progbits
2305 ldq $27,__tls_get_addr($29) !literal!1
2306 lda $16,foo($29) !tlsgd!1
2307 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2308 ldq $27,__tls_get_addr($29) !literal!2
2309 lda $16,foo($29) !tlsldm!2
2310 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2311 ldq $1,foo($29) !gotdtprel
2312 ldah $2,foo($29) !dtprelhi
2313 lda $3,foo($2) !dtprello
2314 lda $4,foo($29) !dtprel
2315 ldq $1,foo($29) !gottprel
2316 ldah $2,foo($29) !tprelhi
2317 lda $3,foo($2) !tprello
2318 lda $4,foo($29) !tprel'
2321 tls_as_opt=--fatal-warnings
2325 .section ".tdata","awT",@progbits
2337 .section ".tdata","awT",@progbits
2341 addil LT%foo-$tls_gdidx$,gp
2342 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2345 addil LT%foo-$tls_ldidx$,gp
2347 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2348 addil LR%foo-$tls_dtpoff$,%ret0
2349 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2351 addil LT%foo-$tls_ieoff$,gp
2352 ldw RT%foo-$tls_ieoff$(%r1),%t2
2355 addil LR%foo-$tls_leoff$,%t1
2356 ldo RR%foo-$tls_leoff$(%r1),%t2'
2359 tls_as_opt=--fatal-warnings
2363 .section ".tdata","awT",%progbits
2376 .section ".tdata","awT",@progbits
2380 leal foo@TLSGD(,%ebx,1), %eax
2381 leal foo@TLSLDM(%ebx), %eax
2382 leal foo@DTPOFF(%eax), %edx
2383 movl foo@GOTTPOFF(%ebx), %eax
2384 subl foo@GOTTPOFF(%ebx), %eax
2385 addl foo@GOTNTPOFF(%ebx), %eax
2386 movl foo@INDNTPOFF, %eax
2387 movl $foo@TPOFF, %eax
2388 subl $foo@TPOFF, %eax
2389 leal foo@NTPOFF(%ecx), %eax'
2392 tls_as_opt=--fatal-warnings
2396 .section ".tdata","awT",@progbits
2400 leaq foo@TLSGD(%rip), %rdi
2401 leaq foo@TLSLD(%rip), %rdi
2402 leaq foo@DTPOFF(%rax), %rdx
2403 movq foo@GOTTPOFF(%rip), %rax
2404 movq $foo@TPOFF, %rax'
2407 tls_as_opt=--fatal-warnings
2411 .section ".tdata","awT",@progbits
2414 addl r16 = @ltoff(@dtpmod(foo#)), gp
2415 addl r17 = @ltoff(@dtprel(foo#)), gp
2416 addl r18 = @ltoff(@tprel(foo#)), gp
2417 addl r19 = @dtprel(foo#), gp
2418 adds r21 = @dtprel(foo#), r13
2419 movl r23 = @dtprel(foo#)
2420 addl r20 = @tprel(foo#), gp
2421 adds r22 = @tprel(foo#), r13
2422 movl r24 = @tprel(foo#)'
2425 tls_as_opt=--fatal-warnings
2429 .section .tdata,"awT",@progbits
2433 addiu $4, $28, %tlsgd(x)
2434 addiu $4, $28, %tlsldm(x)
2435 lui $4, %dtprel_hi(x)
2436 addiu $4, $4, %dtprel_lo(x)
2437 lw $4, %gottprel(x)($28)
2438 lui $4, %tprel_hi(x)
2439 addiu $4, $4, %tprel_lo(x)'
2442 tls_as_opt='-32 --fatal-warnings'
2446 .section ".tdata","awT",@progbits
2454 addi 3,31,ld0@got@tlsgd
2456 addi 3,31,x1@got@tlsld
2459 addis 9,3,x2@dtprel@ha
2460 addi 9,9,x2@dtprel@l
2461 lwz 9,x3@got@tprel(31)
2464 addis 9,2,x2@tprel@ha
2465 addi 9,9,x2@tprel@l'
2468 tls_as_opt="-a32 --fatal-warnings"
2472 .section ".tdata","awT",@progbits
2480 addi 3,2,ld0@got@tlsgd
2486 addi 3,2,x1@got@tlsld
2492 addis 9,3,x2@dtprel@ha
2493 addi 9,9,x2@dtprel@l
2496 ld 9,x3@got@dtprel(2)
2502 tls_as_opt="-a64 --fatal-warnings"
2506 .section ".tdata","awT",@progbits
2515 l %r1,foo@GOTNTPOFF(%r12)
2516 l %r1,0(%r1):tls_load:foo
2517 bas %r14,0(%r1,%r13):tls_gdcall:foo
2518 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2521 tls_as_opt="-m31 --fatal-warnings"
2525 .section ".tdata","awT",@progbits
2533 lg %r1,foo@GOTNTPOFF(%r12)
2534 larl %r1,foo@INDNTPOFF
2535 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2536 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2539 tls_as_opt="-m64 -Aesame --fatal-warnings"
2541 sh-*-* | sh[34]-*-*)
2543 .section ".tdata","awT",@progbits
2553 tls_as_opt=--fatal-warnings
2557 sparc*-sun-solaris2.[56789]*)
2558 # TLS was introduced in the Solaris 9 4/04 release but
2559 # we do not enable it by default on Solaris 9 either.
2560 if test "x$enable_tls" = xyes ; then
2566 sparc*-sun-solaris2.*)
2573 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2575 .section ".tdata",#alloc,#write,#tls
2578 sethi %tgd_hi22(foo), %o0
2579 add %o0, %tgd_lo10(foo), %o1
2580 add %l7, %o1, %o0, %tgd_add(foo)
2581 call __tls_get_addr, %tgd_call(foo)
2582 sethi %tldm_hi22(foo), %l1
2583 add %l1, %tldm_lo10(foo), %l2
2584 add %l7, %l2, %o0, %tldm_add(foo)
2585 call __tls_get_addr, %tldm_call(foo)
2586 sethi %tldo_hix22(foo), %l3
2587 xor %l3, %tldo_lox10(foo), %l4
2588 add %o0, %l4, %l5, %tldo_add(foo)
2589 sethi %tie_hi22(foo), %o3
2590 add %o3, %tie_lo10(foo), %o3
2591 ld [%l7 + %o3], %o2, %tie_ld(foo)
2592 add %g7, %o2, %o4, %tie_add(foo)
2593 sethi %tle_hix22(foo), %l1
2594 xor %l1, %tle_lox10(foo), %o5
2595 ld [%g7 + %o5], %o1'
2600 .section ".tdata","awT",@progbits
2603 sethi %tgd_hi22(foo), %o0
2604 add %o0, %tgd_lo10(foo), %o1
2605 add %l7, %o1, %o0, %tgd_add(foo)
2606 call __tls_get_addr, %tgd_call(foo)
2607 sethi %tldm_hi22(foo), %l1
2608 add %l1, %tldm_lo10(foo), %l2
2609 add %l7, %l2, %o0, %tldm_add(foo)
2610 call __tls_get_addr, %tldm_call(foo)
2611 sethi %tldo_hix22(foo), %l3
2612 xor %l3, %tldo_lox10(foo), %l4
2613 add %o0, %l4, %l5, %tldo_add(foo)
2614 sethi %tie_hi22(foo), %o3
2615 add %o3, %tie_lo10(foo), %o3
2616 ld [%l7 + %o3], %o2, %tie_ld(foo)
2617 add %g7, %o2, %o4, %tie_add(foo)
2618 sethi %tle_hix22(foo), %l1
2619 xor %l1, %tle_lox10(foo), %o5
2620 ld [%g7 + %o5], %o1'
2623 tls_as_opt="-32 --fatal-warnings"
2629 if test "x$enable_tls" = xno ; then
2630 : # TLS explicitly disabled.
2631 elif test "x$enable_tls" = xyes ; then
2632 set_have_as_tls=yes # TLS explicitly enabled.
2633 elif test -z "$tls_first_major"; then
2634 : # If we don't have a check, assume no support.
2636 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2637 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2638 [set_have_as_tls=yes])
2640 if test $set_have_as_tls = yes ; then
2641 AC_DEFINE(HAVE_AS_TLS, 1,
2642 [Define if your assembler supports thread-local storage.])
2645 # Target-specific assembler checks.
2647 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2648 gcc_cv_ld_static_dynamic=no
2649 if test $in_tree_ld = yes ; then
2650 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2651 gcc_cv_ld_static_dynamic=yes
2653 elif test x$gcc_cv_ld != x; then
2654 # Check if linker supports -Bstatic/-Bdynamic option
2655 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2656 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2657 gcc_cv_ld_static_dynamic=yes
2660 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2661 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2662 [Define if your linker supports -Bstatic/-Bdynamic option.])
2664 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2666 if test x"$demangler_in_ld" = xyes; then
2667 AC_MSG_CHECKING(linker --demangle support)
2668 gcc_cv_ld_demangle=no
2669 if test $in_tree_ld = yes; then
2670 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2671 gcc_cv_ld_demangle=yes
2673 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2674 # Check if the GNU linker supports --demangle option
2675 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2676 gcc_cv_ld_demangle=yes
2679 if test x"$gcc_cv_ld_demangle" = xyes; then
2680 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2681 [Define if your linker supports --demangle option.])
2683 AC_MSG_RESULT($gcc_cv_ld_demangle)
2687 # All TARGET_ABI_OSF targets.
2688 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2689 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2690 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2693 extbl $3, $2, $3 !lituse_bytoff!1
2694 ldq $2, a($29) !literal!1
2695 ldq $4, b($29) !literal!2
2696 ldq_u $3, 0($2) !lituse_base!1
2697 ldq $27, f($29) !literal!5
2698 jsr $26, ($27), f !lituse_jsr!5
2699 ldah $29, 0($26) !gpdisp!3
2700 lda $0, c($29) !gprel
2701 ldah $1, d($29) !gprelhigh
2702 lda $1, d($1) !gprellow
2703 lda $29, 0($29) !gpdisp!3],,
2704 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2705 [Define if your assembler supports explicit relocations.])])
2706 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2707 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2710 ldq $27, a($29) !literal!1
2711 jsr $26, ($27), a !lituse_jsrdirect!1],,
2712 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2713 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2717 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2718 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2719 [-no-mul-bug-abort], [.text],,
2720 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2721 [Define if your assembler supports the -no-mul-bug-abort option.])])
2725 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2726 [.register %g2, #scratch],,
2727 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2728 [Define if your assembler supports .register.])])
2730 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2732 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2733 [Define if your assembler supports -relax option.])])
2735 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2736 gcc_cv_as_sparc_ua_pcrel,,
2744 .uaword %r_disp32(foo)],
2745 [if test x$gcc_cv_ld != x \
2746 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2747 gcc_cv_as_sparc_ua_pcrel=yes
2750 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2751 [Define if your assembler and linker support unaligned PC relative relocs.])
2753 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2754 gcc_cv_as_sparc_ua_pcrel_hidden,,
2759 .uaword %r_disp32(foo)
2760 .byte 0x32, 0x33, 0x34
2765 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2766 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2767 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2768 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2769 if $gcc_cv_objdump -R conftest 2> /dev/null \
2770 | grep 'DISP32' > /dev/null 2>&1; then
2773 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2777 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2778 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2779 ]) # unaligned pcrel relocs
2781 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2782 gcc_cv_as_sparc_offsetable_lo10,,
2785 or %g1, %lo(ab) + 12, %g1
2786 or %g1, %lo(ab + 12), %g1],
2787 [if test x$gcc_cv_objdump != x \
2788 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2789 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2790 gcc_cv_as_sparc_offsetable_lo10=yes
2792 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2793 [Define if your assembler supports offsetable %lo().])])
2797 i[34567]86-*-* | x86_64-*-*)
2800 cygwin* | pe | mingw32*)
2801 # Used for DWARF 2 in PE
2802 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2803 gcc_cv_as_ix86_pe_secrel32,
2809 [if test x$gcc_cv_ld != x \
2810 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2811 gcc_cv_as_ix86_pe_secrel32=yes
2814 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2815 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2819 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2820 gcc_cv_as_ix86_filds_fists,
2821 [2,9,0],, [filds mem; fists mem],,
2822 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2823 [Define if your assembler uses the new HImode fild and fist notation.])])
2825 gcc_GAS_CHECK_FEATURE([cmov syntax],
2826 gcc_cv_as_ix86_cmov_sun_syntax,,,
2827 [cmovl.l %edx, %eax],,
2828 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2829 [Define if your assembler supports the Sun syntax for cmov.])])
2831 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2832 gcc_cv_as_ix86_ffreep,,,
2834 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2835 [Define if your assembler supports the ffreep mnemonic.])])
2837 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
2838 gcc_cv_as_ix86_sahf,,,
2840 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
2841 [Define if your assembler supports the sahf mnemonic.])])
2843 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2844 gcc_cv_as_ix86_diff_sect_delta,,,
2852 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2853 [Define if your assembler supports the subtraction of symbols in different sections.])])
2855 # This one is used unconditionally by i386.[ch]; it is to be defined
2856 # to 1 if the feature is present, 0 otherwise.
2857 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2858 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2864 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2865 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2866 [Define true if the assembler supports '.long foo@GOTOFF'.])
2870 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2871 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2873 addl r15 = @ltoffx(x#), gp
2875 ld8.mov r16 = [[r15]], x#],,
2876 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2877 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2883 *-*-aix*) conftest_s=' .machine "pwr5"
2887 gcc_GAS_CHECK_FEATURE([.machine directive support],
2888 gcc_cv_as_machine_directive,,,
2889 [ .machine ppc7400])
2890 if test x$gcc_cv_as_machine_directive != xyes; then
2891 echo "*** This target requires an assembler supporting \".machine\"" >&2
2892 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2893 test x$build = x$target && exit 1
2897 *) conftest_s=' .machine power4
2902 gcc_GAS_CHECK_FEATURE([mfcr field support],
2903 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2905 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2906 [Define if your assembler supports mfcr field.])])
2909 *-*-aix*) conftest_s=' .machine "pwr5"
2912 *) conftest_s=' .machine power5
2917 gcc_GAS_CHECK_FEATURE([popcntb support],
2918 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2920 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2921 [Define if your assembler supports popcntb field.])])
2924 *-*-aix*) conftest_s=' .machine "pwr5x"
2927 *) conftest_s=' .machine power5
2932 gcc_GAS_CHECK_FEATURE([fp round support],
2933 gcc_cv_as_powerpc_fprnd, [2,17,0],,
2935 [AC_DEFINE(HAVE_AS_FPRND, 1,
2936 [Define if your assembler supports fprnd.])])
2939 *-*-aix*) conftest_s=' .machine "pwr6"
2942 *) conftest_s=' .machine power6
2947 gcc_GAS_CHECK_FEATURE([move fp gpr support],
2948 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
2950 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
2951 [Define if your assembler supports mffgpr and mftgpr.])])
2954 *-*-aix*) conftest_s=' .csect .text[[PR]]
2956 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2960 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2961 *) conftest_s=' .text
2963 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2966 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2967 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2969 [AC_DEFINE(HAVE_AS_REL16, 1,
2970 [Define if your assembler supports R_PPC_REL16 relocs.])])
2973 *-*-aix*) conftest_s=' .machine "pwr6"
2976 *) conftest_s=' .machine power6
2981 gcc_GAS_CHECK_FEATURE([compare bytes support],
2982 gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
2984 [AC_DEFINE(HAVE_AS_CMPB, 1,
2985 [Define if your assembler supports cmpb.])])
2988 *-*-aix*) conftest_s=' .machine "pwr6"
2991 *) conftest_s=' .machine power6
2996 gcc_GAS_CHECK_FEATURE([decimal float support],
2997 gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
2999 [AC_DEFINE(HAVE_AS_DFP, 1,
3000 [Define if your assembler supports DFP instructions.])])
3002 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3003 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3004 [.gnu_attribute 4,1],,
3005 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3006 [Define if your assembler supports .gnu_attribute.])])
3010 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3011 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3012 [ lw $4,%gp_rel(foo)($4)],,
3013 [if test x$target_cpu_default = x
3014 then target_cpu_default=MASK_EXPLICIT_RELOCS
3015 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3017 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3018 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3019 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3020 [Define if the assembler understands -mno-shared.])])
3022 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3023 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3024 [.gnu_attribute 4,1],,
3025 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3026 [Define if your assembler supports .gnu_attribute.])])
3028 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3029 gcc_cv_as_mips_dtprelword, [2,18,0],,
3030 [.section .tdata,"awT",@progbits
3034 .dtprelword x+0x8000],,
3035 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3036 [Define if your assembler supports .dtprelword.])])
3040 # Mips and HP-UX need the GNU assembler.
3041 # Linux on IA64 might be able to use the Intel assembler.
3044 mips*-*-* | *-*-hpux* )
3045 if test x$gas_flag = xyes \
3046 || test x"$host" != x"$build" \
3047 || test ! -x "$gcc_cv_as" \
3048 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3051 echo "*** This configuration requires the GNU assembler" >&2
3057 # ??? Not all targets support dwarf2 debug_line, even within a version
3058 # of gas. Moreover, we need to emit a valid instruction to trigger any
3059 # info to the output file. So, as supported targets are added to gas 2.11,
3060 # add some instruction here to (also) show we expect this might work.
3061 # ??? Once 2.11 is released, probably need to add first known working
3062 # version to the per-target configury.
3064 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3065 | x86_64*-*-* | hppa*-*-* | arm*-*-* \
3066 | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-* \
3067 | spu-*-* | fido*-*-*)
3070 ia64*-*-* | s390*-*-*)
3077 if test x"$insn" != x; then
3079 .file 1 \"conftest.s\"
3082 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3083 gcc_cv_as_dwarf2_debug_line,
3084 [elf,2,11,0],, [$conftest_s],
3085 [if test x$gcc_cv_objdump != x \
3086 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3087 | grep debug_line > /dev/null 2>&1; then
3088 gcc_cv_as_dwarf2_debug_line=yes
3091 # The .debug_line file table must be in the exact order that
3092 # we specified the files, since these indices are also used
3093 # by DW_AT_decl_file. Approximate this test by testing if
3094 # the assembler bitches if the same index is assigned twice.
3095 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3096 gcc_cv_as_dwarf2_file_buggy,,,
3100 if test $gcc_cv_as_dwarf2_debug_line = yes \
3101 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3102 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3103 [Define if your assembler supports dwarf2 .file/.loc directives,
3104 and preserves file table indices exactly as given.])
3107 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3108 gcc_cv_as_gdwarf2_flag,
3109 [elf,2,11,0], [--gdwarf2], [$insn],,
3110 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3111 [Define if your assembler supports the --gdwarf2 option.])])
3113 gcc_GAS_CHECK_FEATURE([--gstabs option],
3114 gcc_cv_as_gstabs_flag,
3115 [elf,2,11,0], [--gstabs], [$insn],
3116 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3117 # and warns about it, but still exits successfully. So check for
3119 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3121 else gcc_cv_as_gstabs_flag=yes
3123 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3124 [Define if your assembler supports the --gstabs option.])])
3126 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3127 gcc_cv_as_debug_prefix_map_flag,
3128 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3129 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3130 [Define if your assembler supports the --debug-prefix-map option.])])
3133 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3134 [gcc_cv_as_line_zero],
3135 [gcc_cv_as_line_zero=no
3136 if test $in_tree_gas = yes; then
3137 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3138 elif test "x$gcc_cv_as" != x; then
3139 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3140 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3141 test "x`cat conftest.out`" = x
3143 gcc_cv_as_line_zero=yes
3145 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3146 cat conftest.s >&AS_MESSAGE_LOG_FD
3147 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3148 cat conftest.out >&AS_MESSAGE_LOG_FD
3150 rm -f conftest.o conftest.s conftest.out
3152 if test "x$gcc_cv_as_line_zero" = xyes; then
3153 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3154 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3157 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3158 gcc_cv_ld_ro_rw_mix=unknown
3159 if test $in_tree_ld = yes ; then
3160 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3161 && test $in_tree_ld_is_elf = yes; then
3162 gcc_cv_ld_ro_rw_mix=read-write
3164 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3165 echo '.section myfoosect, "a"' > conftest1.s
3166 echo '.section myfoosect, "aw"' > conftest2.s
3167 echo '.byte 1' >> conftest2.s
3168 echo '.section myfoosect, "a"' > conftest3.s
3169 echo '.byte 0' >> conftest3.s
3170 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3171 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3172 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3173 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3174 conftest2.o conftest3.o > /dev/null 2>&1; then
3175 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3176 | sed -e '/myfoosect/!d' -e N`
3177 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3178 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3179 gcc_cv_ld_ro_rw_mix=read-only
3181 gcc_cv_ld_ro_rw_mix=read-write
3186 rm -f conftest.* conftest[123].*
3189 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3190 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3191 [Define if your linker links a mix of read-only
3192 and read-write sections into a read-write section.])
3194 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3196 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3197 gcc_cv_ld_eh_frame_hdr=no
3198 if test $in_tree_ld = yes ; then
3199 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3200 && test $in_tree_ld_is_elf = yes; then
3201 gcc_cv_ld_eh_frame_hdr=yes
3203 elif test x$gcc_cv_ld != x; then
3204 # Check if linker supports --eh-frame-hdr option
3205 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3206 gcc_cv_ld_eh_frame_hdr=yes
3209 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3210 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3211 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3212 [Define if your linker supports --eh-frame-hdr option.])
3214 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3216 AC_MSG_CHECKING(linker position independent executable support)
3218 if test $in_tree_ld = yes ; then
3219 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3220 && test $in_tree_ld_is_elf = yes; then
3223 elif test x$gcc_cv_ld != x; then
3224 # Check if linker supports -pie option
3225 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3229 if test x"$gcc_cv_ld_pie" = xyes; then
3230 AC_DEFINE(HAVE_LD_PIE, 1,
3231 [Define if your linker supports -pie option.])
3233 AC_MSG_RESULT($gcc_cv_ld_pie)
3235 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3236 gcc_cv_ld_eh_gc_sections=no
3237 if test $in_tree_ld = yes ; then
3238 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3239 && test $in_tree_ld_is_elf = yes; then
3240 gcc_cv_ld_eh_gc_sections=yes
3242 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3243 cat > conftest.s <<EOF
3246 .type _start, @function
3249 .size _start, .-_start
3250 .section .text.foo,"ax",@progbits
3251 .type foo, @function
3255 .section .gcc_except_table.foo,"a",@progbits
3258 .section .eh_frame,"a",@progbits
3261 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3262 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3263 | grep "gc-sections option ignored" > /dev/null; then
3264 gcc_cv_ld_eh_gc_sections=no
3265 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3266 gcc_cv_ld_eh_gc_sections=yes
3267 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3268 if test x$gcc_cv_as_comdat_group != xyes; then
3269 gcc_cv_ld_eh_gc_sections=no
3270 cat > conftest.s <<EOF
3273 .type _start, @function
3276 .size _start, .-_start
3277 .section .gnu.linkonce.t.foo,"ax",@progbits
3278 .type foo, @function
3282 .section .gcc_except_table.foo,"a",@progbits
3285 .section .eh_frame,"a",@progbits
3288 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3289 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3290 | grep "gc-sections option ignored" > /dev/null; then
3291 gcc_cv_ld_eh_gc_sections=no
3292 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3293 gcc_cv_ld_eh_gc_sections=yes
3299 rm -f conftest.s conftest.o conftest
3303 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3304 gcc_cv_ld_eh_gc_sections=no
3307 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3308 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3309 [Define if your linker supports garbage collection of
3310 sections in presence of EH frames.])
3312 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3318 AC_CACHE_CHECK(linker --as-needed support,
3319 gcc_cv_ld_as_needed,
3320 [gcc_cv_ld_as_needed=no
3321 if test $in_tree_ld = yes ; then
3322 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3323 && test $in_tree_ld_is_elf = yes; then
3324 gcc_cv_ld_as_needed=yes
3326 elif test x$gcc_cv_ld != x; then
3327 # Check if linker supports --as-needed and --no-as-needed options
3328 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3329 gcc_cv_ld_as_needed=yes
3333 if test x"$gcc_cv_ld_as_needed" = xyes; then
3334 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3335 [Define if your linker supports --as-needed and --no-as-needed options.])
3338 case "$target:$tm_file" in
3339 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3340 AC_CACHE_CHECK(linker support for omitting dot symbols,
3341 gcc_cv_ld_no_dot_syms,
3342 [gcc_cv_ld_no_dot_syms=no
3343 if test $in_tree_ld = yes ; then
3344 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3345 gcc_cv_ld_no_dot_syms=yes
3347 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3348 cat > conftest1.s <<EOF
3352 cat > conftest2.s <<EOF
3353 .section ".opd","aw"
3358 .quad .LEfoo,.TOC.@tocbase,0
3364 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3365 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3366 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3367 gcc_cv_ld_no_dot_syms=yes
3369 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3372 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3373 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3374 [Define if your PowerPC64 linker only needs function descriptor syms.])
3379 AC_CACHE_CHECK(linker --sysroot support,
3381 [gcc_cv_ld_sysroot=no
3382 if test $in_tree_ld = yes ; then
3383 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3384 gcc_cv_ld_sysroot=yes
3386 elif test x$gcc_cv_ld != x; then
3387 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3388 gcc_cv_ld_sysroot=yes
3391 if test x"$gcc_cv_ld_sysroot" = xyes; then
3392 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3393 [Define if your linker supports --sysroot.])
3396 if test x$with_sysroot = x && test x$host = x$target \
3397 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3398 && test "$prefix" != "NONE"; then
3399 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3400 [Define to PREFIX/include if cpp should also search that directory.])
3403 # Test for stack protector support in target C library.
3404 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3405 gcc_cv_libc_provides_ssp,
3406 [gcc_cv_libc_provides_ssp=no
3409 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3410 if test "x$with_sysroot" = x; then
3411 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3412 elif test "x$with_build_sysroot" != "x"; then
3413 glibc_header_dir="${with_build_sysroot}/usr/include"
3414 elif test "x$with_sysroot" = xyes; then
3415 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3417 glibc_header_dir="${with_sysroot}/usr/include"
3420 glibc_header_dir=/usr/include
3422 # glibc 2.4 and later provides __stack_chk_fail and
3423 # either __stack_chk_guard, or TLS access to stack guard canary.
3424 if test -f $glibc_header_dir/features.h \
3425 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3426 $glibc_header_dir/features.h > /dev/null; then
3427 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3428 $glibc_header_dir/features.h > /dev/null; then
3429 gcc_cv_libc_provides_ssp=yes
3430 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3431 $glibc_header_dir/features.h > /dev/null \
3432 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3433 $glibc_header_dir/features.h > /dev/null; then
3434 gcc_cv_libc_provides_ssp=yes
3435 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
3436 $glibc_header_dir/features.h > /dev/null && \
3437 test -f $glibc_header_dir/bits/uClibc_config.h && \
3438 $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
3439 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
3440 gcc_cv_libc_provides_ssp=yes
3445 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3446 [echo "no __stack_chk_fail on this target"])
3448 *) gcc_cv_libc_provides_ssp=no ;;
3451 if test x$gcc_cv_libc_provides_ssp = xyes; then
3452 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3453 [Define if your target C library provides stack protector support])
3456 # Check if TFmode long double should be used by default or not.
3457 # Some glibc targets used DFmode long double, but with glibc 2.4
3458 # and later they can use TFmode.
3460 powerpc*-*-linux* | \
3465 AC_ARG_WITH(long-double-128,
3466 [ --with-long-double-128 Use 128-bit long double by default.],
3467 gcc_cv_target_ldbl128="$with_long_double_128",
3468 [gcc_cv_target_ldbl128=no
3469 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3470 if test "x$with_sysroot" = x; then
3471 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3472 elif test "x$with_build_sysroot" != "x"; then
3473 glibc_header_dir="${with_build_sysroot}/usr/include"
3474 elif test "x$with_sysroot" = xyes; then
3475 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3477 glibc_header_dir="${with_sysroot}/usr/include"
3480 glibc_header_dir=/usr/include
3483 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3484 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3485 && gcc_cv_target_ldbl128=yes
3490 if test x$gcc_cv_target_ldbl128 = xyes; then
3491 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3492 [Define if TFmode long double should be the default])
3495 # Find out what GC implementation we want, or may, use.
3497 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3505 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3508 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3513 echo "Using $GGC for garbage collection."
3515 # Use the system's zlib library.
3517 zlibinc="-I\$(srcdir)/../zlib"
3518 AC_ARG_WITH(system-zlib,
3519 [ --with-system-zlib use installed libz],
3526 dnl Very limited version of automake's enable-maintainer-mode
3528 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3529 dnl maintainer-mode is disabled by default
3530 AC_ARG_ENABLE(maintainer-mode,
3531 [ --enable-maintainer-mode
3532 enable make rules and dependencies not useful
3533 (and sometimes confusing) to the casual installer],
3534 maintainer_mode=$enableval,
3537 AC_MSG_RESULT($maintainer_mode)
3539 if test "$maintainer_mode" = "yes"; then
3550 # Make empty files to contain the specs and options for each language.
3551 # Then add #include lines to for a compiler that has specs and/or options.
3557 # These (without "all_") are set in each config-lang.in.
3558 # `language' must be a single word so is spelled singularly.
3561 all_outputs='Makefile gccbug libada-mk'
3562 # List of language makefile fragments.
3564 # List of language subdirectory makefiles. Deprecated.
3566 # Additional files for gengtype
3567 all_gtfiles="$target_gtfiles"
3569 # These are the languages that are set in --enable-languages,
3570 # and are available in the GCC tree.
3571 all_selected_languages=
3573 # Add the language fragments.
3574 # Languages are added via two mechanisms. Some information must be
3575 # recorded in makefile variables, these are defined in config-lang.in.
3576 # We accumulate them and plug them into the main Makefile.
3577 # The other mechanism is a set of hooks for each of the main targets
3578 # like `clean', `install', etc.
3580 language_hooks="Make-hooks"
3582 for lang in ${srcdir}/*/config-lang.in
3585 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3587 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3588 if test "x$lang_alias" = x
3590 echo "$lang doesn't set \$language." 1>&2
3593 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3594 subdirs="$subdirs $subdir"
3596 # $gcc_subdir is where the gcc integration files are to be found
3597 # for a language, both for internal compiler purposes (compiler
3598 # sources implementing front-end to GCC tree converters), and for
3599 # build infrastructure purposes (Make-lang.in, etc.)
3601 # This will be <subdir> (relative to $srcdir) if a line like
3602 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
3603 # is found in <langdir>/config-lang.in, and will remain <langdir>
3606 # Except for the language alias (fetched above), the regular
3607 # "config-lang.in" contents are always retrieved from $gcc_subdir,
3608 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
3609 # only this and the language alias.
3611 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
3612 if [ "$gcc_subdir" = "" ]; then
3613 gcc_subdir="$subdir"
3616 case ",$enable_languages," in
3618 all_selected_languages="$all_selected_languages $lang_alias"
3619 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
3620 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
3632 . ${srcdir}/$gcc_subdir/config-lang.in
3633 if test "x$language" = x
3635 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
3640 case ",$enable_languages," in
3643 for i in $subdir_requires; do
3644 test -f "${srcdir}/$i/config-lang.in" && continue
3652 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
3653 if test -f $srcdir/$gcc_subdir/lang.opt; then
3654 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
3656 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
3657 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
3659 if test -f ${srcdir}/$gcc_subdir/Makefile.in
3660 then all_lang_makefiles="$gcc_subdir/Makefile"
3662 all_languages="$all_languages $language"
3663 all_compilers="$all_compilers $compilers"
3664 all_outputs="$all_outputs $outputs"
3665 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
3668 # Pick up gtfiles for c
3670 . ${srcdir}/c-config-lang.in
3671 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
3674 for language in $all_selected_languages
3676 check_languages="$check_languages check-$language"
3679 # We link each language in with a set of hooks, reached indirectly via
3680 # lang.${target}. Only do so for selected languages.
3684 target_list="all.cross start.encap rest.encap tags \
3685 install-common install-man install-info install-pdf dvi pdf \
3686 html uninstall info man srcextra srcman srcinfo \
3687 mostlyclean clean distclean maintainer-clean"
3689 for t in $target_list
3692 for lang in $all_selected_languages
3696 echo "lang.$t: $x" >> Make-hooks
3705 echo "dir ." > .gdbinit
3706 echo "dir ${srcdir}" >> .gdbinit
3707 if test x$gdb_needs_out_file_path = xyes
3709 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3711 if test "x$subdirs" != x; then
3714 echo "dir ${srcdir}/$s" >> .gdbinit
3717 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3719 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
3720 AC_SUBST(gcc_tooldir)
3723 # Find a directory in which to install a shared libgcc.
3725 AC_ARG_ENABLE(version-specific-runtime-libs,
3726 [ --enable-version-specific-runtime-libs
3727 specify that runtime libraries should be
3728 installed in a compiler-specific directory])
3730 AC_ARG_WITH(slibdir,
3731 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3732 slibdir="$with_slibdir",
3733 if test "${enable_version_specific_runtime_libs+set}" = set; then
3734 slibdir='$(libsubdir)'
3735 elif test "$host" != "$target"; then
3736 slibdir='$(build_tooldir)/lib'
3742 AC_ARG_WITH(datarootdir,
3743 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3744 datarootdir="\${prefix}/$with_datarootdir",
3745 datarootdir='$(prefix)/share')
3746 AC_SUBST(datarootdir)
3749 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3750 docdir="\${prefix}/$with_docdir",
3751 docdir='$(datarootdir)')
3754 AC_ARG_WITH(htmldir,
3755 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3756 htmldir="\${prefix}/$with_htmldir",
3757 htmldir='$(docdir)')
3760 # Substitute configuration variables
3763 AC_SUBST(all_compilers)
3764 AC_SUBST(all_gtfiles)
3765 AC_SUBST(all_lang_makefrags)
3766 AC_SUBST(all_lang_makefiles)
3767 AC_SUBST(all_languages)
3768 AC_SUBST(all_selected_languages)
3769 AC_SUBST(build_exeext)
3770 AC_SUBST(build_install_headers_dir)
3771 AC_SUBST(build_xm_file_list)
3772 AC_SUBST(build_xm_include_list)
3773 AC_SUBST(build_xm_defines)
3774 AC_SUBST(build_file_translate)
3775 AC_SUBST(check_languages)
3776 AC_SUBST(cpp_install_dir)
3777 AC_SUBST(xmake_file)
3778 AC_SUBST(tmake_file)
3779 AC_SUBST(extra_gcc_objs)
3780 AC_SUBST(extra_headers_list)
3781 AC_SUBST(extra_objs)
3782 AC_SUBST(extra_parts)
3783 AC_SUBST(extra_passes)
3784 AC_SUBST(extra_programs)
3785 AC_SUBST(float_h_file)
3786 AC_SUBST(gcc_config_arguments)
3787 AC_SUBST(gcc_gxx_include_dir)
3788 AC_SUBST(host_exeext)
3789 AC_SUBST(host_xm_file_list)
3790 AC_SUBST(host_xm_include_list)
3791 AC_SUBST(host_xm_defines)
3792 AC_SUBST(out_host_hook_obj)
3794 AC_SUBST(lang_opt_files)
3795 AC_SUBST(lang_specs_files)
3796 AC_SUBST(lang_tree_files)
3797 AC_SUBST(local_prefix)
3799 AC_SUBST(objc_boehm_gc)
3801 AC_SUBST(out_object_file)
3802 AC_SUBST(thread_file)
3803 AC_SUBST(tm_file_list)
3804 AC_SUBST(tm_include_list)
3805 AC_SUBST(tm_defines)
3806 AC_SUBST(tm_p_file_list)
3807 AC_SUBST(tm_p_include_list)
3808 AC_SUBST(xm_file_list)
3809 AC_SUBST(xm_include_list)
3810 AC_SUBST(xm_defines)
3811 AC_SUBST(c_target_objs)
3812 AC_SUBST(cxx_target_objs)
3813 AC_SUBST(fortran_target_objs)
3814 AC_SUBST(target_cpu_default)
3816 AC_SUBST_FILE(language_hooks)
3819 if test x${build} = x${host} ; then
3820 if test x${host} = x${target} ; then
3821 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3823 echo "Links are now set up to build a cross-compiler" 1>&2
3824 echo " from ${host} to ${target}." 1>&2
3827 if test x${host} = x${target} ; then
3828 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3829 echo " for ${target}." 1>&2
3831 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3832 echo " from ${host} to ${target}." 1>&2
3836 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3837 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3839 # Configure the subdirectories
3840 # AC_CONFIG_SUBDIRS($subdirs)
3842 # Create the Makefile
3843 # and configure language subdirectories
3844 AC_CONFIG_FILES($all_outputs)
3846 AC_CONFIG_COMMANDS([default],
3848 case ${CONFIG_HEADERS} in
3849 *auto-host.h:config.in*)
3852 # Make sure all the subdirs exist.
3853 for d in $subdirs doc build
3855 test -d $d || mkdir $d
3858 [subdirs='$subdirs'])