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$gcc_cv_func_mbstowcs_works = xyes; then
1006 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1007 [Define this macro if mbstowcs does not crash when its
1008 first argument is NULL.])
1012 AC_CHECK_TYPE(ssize_t, int)
1013 AC_CHECK_TYPE(caddr_t, char *)
1015 # Try to determine the array type of the second argument of getgroups
1016 # for the target system (int or gid_t).
1018 if test "${target}" = "${build}"; then
1019 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1022 # This condition may need some tweaking. It should include all
1023 # targets where the array type of the second argument of getgroups
1024 # is int and the type of gid_t is not equivalent to int.
1025 *-*-sunos* | *-*-ultrix*)
1026 TARGET_GETGROUPS_T=int
1029 TARGET_GETGROUPS_T=gid_t
1033 AC_SUBST(TARGET_GETGROUPS_T)
1035 gcc_AC_FUNC_MMAP_BLACKLIST
1039 # Under VMS, vfork works very differently than on Unix. The standard test
1040 # won't work, and it isn't easily adaptable. It makes more sense to
1042 ac_cv_func_vfork_works=yes
1048 # Until we have in-tree GNU iconv:
1050 AC_SUBST(LIBICONV_DEP)
1056 # We will need to find libiberty.h and ansidecl.h
1057 saved_CFLAGS="$CFLAGS"
1058 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1059 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1060 strsignal strstr strverscmp \
1061 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1062 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1063 #include "ansidecl.h"
1064 #include "system.h"])
1066 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1067 #include "ansidecl.h"
1069 #ifdef HAVE_SYS_RESOURCE_H
1070 #include <sys/resource.h>
1074 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1075 #include "ansidecl.h"
1077 #ifdef HAVE_SYS_RESOURCE_H
1078 #include <sys/resource.h>
1080 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1081 [Define to `long' if <sys/resource.h> doesn't define.])])
1083 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1084 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1085 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1086 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1087 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1088 #include "ansidecl.h"
1097 gcc_AC_CHECK_DECLS(times, , ,[
1098 #include "ansidecl.h"
1100 #ifdef HAVE_SYS_TIMES_H
1101 #include <sys/times.h>
1105 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1106 #include "ansidecl.h"
1111 # More time-related stuff.
1112 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1113 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1114 #include "ansidecl.h"
1116 #ifdef HAVE_SYS_TIMES_H
1117 #include <sys/times.h>
1119 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1120 if test $ac_cv_struct_tms = yes; then
1121 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1122 [Define if <sys/times.h> defines struct tms.])
1125 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1126 # revisit after autoconf 2.50.
1127 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1128 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1129 #include "ansidecl.h"
1131 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1132 if test $gcc_cv_type_clock_t = yes; then
1133 AC_DEFINE(HAVE_CLOCK_T, 1,
1134 [Define if <time.h> defines clock_t.])
1137 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1138 CFLAGS="$saved_CFLAGS"
1140 gcc_AC_INITFINI_ARRAY
1142 # mkdir takes a single argument on some systems.
1143 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1151 # With Setjmp/Longjmp based exception handling.
1152 AC_ARG_ENABLE(sjlj-exceptions,
1153 [ --enable-sjlj-exceptions
1154 arrange to use setjmp/longjmp exception handling],
1157 if test $enableval != yes; then
1158 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1163 force_sjlj_exceptions=yes],
1166 force_sjlj_exceptions=yes
1170 force_sjlj_exceptions=no
1173 if test $force_sjlj_exceptions = yes; then
1174 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1175 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1176 [Define 0/1 to force the choice for exception handling model.])
1179 # For platforms with the unwind ABI which includes an unwind library,
1180 # libunwind, we can choose to use the system libunwind.
1181 AC_ARG_WITH(system-libunwind,
1182 [ --with-system-libunwind use installed libunwind])
1184 # config.gcc also contains tests of with_system_libunwind.
1185 if test x$with_system_libunwind = xyes; then
1186 AC_DEFINE(HAVE_GETIPINFO, 1,
1187 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1190 # --------------------------------------------------------
1191 # Build, host, and target specific configuration fragments
1192 # --------------------------------------------------------
1194 # Collect build-machine-specific information.
1195 . ${srcdir}/config.build
1197 # Collect host-machine-specific information.
1198 . ${srcdir}/config.host
1202 # Collect target-machine-specific information.
1203 . ${srcdir}/config.gcc
1205 extra_objs="${host_extra_objs} ${extra_objs}"
1206 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1208 # Default the target-machine variables that were not explicitly set.
1209 if test x"$tm_file" = x
1210 then tm_file=$cpu_type/$cpu_type.h; fi
1212 if test x"$extra_headers" = x
1213 then extra_headers=; fi
1215 if test x$md_file = x
1216 then md_file=$cpu_type/$cpu_type.md; fi
1218 if test x$out_file = x
1219 then out_file=$cpu_type/$cpu_type.c; fi
1221 if test x"$tmake_file" = x
1222 then tmake_file=$cpu_type/t-$cpu_type
1225 if test x"$dwarf2" = xyes
1226 then tm_file="$tm_file tm-dwarf2.h"
1229 # Say what files are being used for the output code and MD file.
1230 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1231 echo "Using \`$srcdir/config/$md_file' as machine description file."
1233 # If any of the xm_file variables contain nonexistent files, warn
1234 # about them and drop them.
1237 for x in $build_xm_file; do
1238 if test -f $srcdir/config/$x
1240 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1246 for x in $host_xm_file; do
1247 if test -f $srcdir/config/$x
1249 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1255 for x in $xm_file; do
1256 if test -f $srcdir/config/$x
1258 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1264 for f in $tm_file; do
1267 if test $count = ax; then
1268 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1270 echo "Using the following target machine macro files:"
1271 for f in $tm_file; do
1272 echo " $srcdir/config/$f"
1276 if test x$need_64bit_hwint = xyes; then
1277 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1278 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1281 if test x$use_long_long_for_widest_fast_int = xyes; then
1282 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1283 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1284 efficiently supported by the host hardware.])
1288 for f in $host_xm_file; do
1291 if test $count = a; then
1293 elif test $count = ax; then
1294 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1296 echo "Using the following host machine macro files:"
1297 for f in $host_xm_file; do
1298 echo " $srcdir/config/$f"
1301 echo "Using ${out_host_hook_obj} for host machine hooks."
1303 if test "$host_xm_file" != "$build_xm_file"; then
1305 for f in $build_xm_file; do
1308 if test $count = a; then
1310 elif test $count = ax; then
1311 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1313 echo "Using the following build machine macro files:"
1314 for f in $build_xm_file; do
1315 echo " $srcdir/config/$f"
1322 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1323 gcc_cv_mcontext_underscores,
1325 #include <sys/cdefs.h>
1326 #include <sys/signal.h>
1327 #include <ucontext.h>
1328 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1330 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1331 if test $gcc_cv_mcontext_underscores = yes; then
1332 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1333 [mcontext_t fields start with __])
1342 # Check if a valid thread package
1343 case ${enable_threads} in
1346 target_thread_file='single'
1350 target_thread_file='single'
1352 aix | dce | gnat | irix | posix | posix95 | rtems | \
1353 single | solaris | vxworks | win32 | mipssde)
1354 target_thread_file=${enable_threads}
1357 echo "${enable_threads} is an unknown thread package" 1>&2
1362 if test x${thread_file} = x; then
1363 # No thread file set by target-specific clauses in config.gcc,
1364 # so use file chosen by default logic above
1365 thread_file=${target_thread_file}
1368 # Make gthr-default.h if we have a thread file.
1370 if test $thread_file != single; then
1371 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1372 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1373 rm -f gthr-default.h-t
1375 mv -f gthr-default.h-t gthr-default.h
1377 gthread_flags=-DHAVE_GTHR_DEFAULT
1379 AC_SUBST(gthread_flags)
1386 if test x$enable___cxa_atexit = xyes || \
1387 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1388 if test x$host = x$target; then
1390 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1391 # keyed to flag_use_cxa_atexit
1396 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1397 [echo "__cxa_atexit can't be enabled on this target"])
1401 # We can't check for __cxa_atexit when building a cross, so assume
1405 if test x$use_cxa_atexit = xyes; then
1406 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1407 [Define if you want to use __cxa_atexit, rather than atexit, to
1408 register C++ destructors for local statics and global objects.
1409 This is essential for fully standards-compliant handling of
1410 destructors, but requires __cxa_atexit in libc.])
1415 if test x$with_system_libunwind = xyes; then
1416 if test x$host = x$target; then
1417 AC_SEARCH_LIBS(_Unwind_GetIPInfo, unwind,, [use_getipinfo=no])
1420 GCC_TARGET_TEMPLATE(HAVE_GETIPINFO)
1421 if test x$use_getipinfo = xyes; then
1422 AC_DEFINE(HAVE_GETIPINFO, 1,
1423 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1425 echo "The system unwind library does not support _Unwind_GetIPInfo."
1428 # Look for a file containing extra machine modes.
1429 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1430 extra_modes_file='$(srcdir)'/config/${extra_modes}
1431 AC_SUBST(extra_modes_file)
1432 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1433 [Define to the name of a file containing a list of extra machine modes
1434 for this architecture.])
1437 # Convert extra_options into a form suitable for Makefile use.
1439 for f in $extra_options; do
1440 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1442 AC_SUBST(extra_opt_files)
1444 # auto-host.h is the file containing items generated by autoconf and is
1445 # the first file included by config.h.
1446 # If host=build, it is correct to have bconfig include auto-host.h
1447 # as well. If host!=build, we are in error and need to do more
1448 # work to find out the build config parameters.
1449 if test x$host = x$build
1451 build_auto=auto-host.h
1453 # We create a subdir, then run autoconf in the subdir.
1454 # To prevent recursion we set host and build for the new
1455 # invocation of configure to the build for this invocation
1462 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1463 *) realsrcdir=../${srcdir};;
1465 saved_CFLAGS="${CFLAGS}"
1466 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1467 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1468 ${realsrcdir}/configure \
1469 --enable-languages=${enable_languages-all} \
1470 --target=$target_alias --host=$build_alias --build=$build_alias
1471 CFLAGS="${saved_CFLAGS}"
1473 # We just finished tests for the build machine, so rename
1474 # the file auto-build.h in the gcc directory.
1475 mv auto-host.h ../auto-build.h
1478 build_auto=auto-build.h
1480 AC_SUBST(build_subdir)
1482 tm_file="${tm_file} defaults.h"
1483 tm_p_file="${tm_p_file} tm-preds.h"
1484 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1485 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1486 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1487 # put this back in temporarily.
1488 xm_file="auto-host.h ansidecl.h ${xm_file}"
1495 # Compile in configure arguments.
1496 if test -f configargs.h ; then
1497 # Being re-configured.
1498 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1499 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1501 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1504 # Double all backslashes and backslash all quotes to turn
1505 # gcc_config_arguments into a C string.
1506 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1507 $gcc_config_arguments
1509 gcc_config_arguments_str=`cat conftest.out`
1512 cat > configargs.h <<EOF
1513 /* Generated automatically. */
1514 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1515 static const char thread_model[] = "$thread_file";
1517 static const struct {
1518 const char *name, *value;
1519 } configure_default_options[] = $configure_default_options;
1523 # Internationalization
1524 ZW_GNU_GETTEXT_SISTER_DIR
1526 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1527 # -liconv on the link line twice.
1528 case "$LIBINTL" in *$LIBICONV*)
1532 AC_ARG_ENABLE(secureplt,
1533 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1537 [ --enable-cld enable -mcld by default for 32bit x86], [],
1540 # Windows32 Registry support for specifying GCC installation paths.
1541 AC_ARG_ENABLE(win32-registry,
1542 [ --disable-win32-registry
1543 disable lookup of installation paths in the
1544 Registry on Windows hosts
1545 --enable-win32-registry enable registry lookup (default)
1546 --enable-win32-registry=KEY
1547 use KEY instead of GCC version as the last portion
1548 of the registry key],,)
1551 win32 | pe | cygwin* | mingw32* | uwin*)
1552 if test "x$enable_win32_registry" != xno; then
1553 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1556 if test "x$enable_win32_registry" != xno; then
1557 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1558 [Define to 1 if installation paths should be looked up in the Windows
1559 Registry. Ignored on non-Windows hosts.])
1561 if test "x$enable_win32_registry" != xyes \
1562 && test "x$enable_win32_registry" != x; then
1563 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1564 [Define to be the last component of the Windows registry key under which
1565 to look for installation paths. The full key used will be
1566 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1567 The default is the GCC version number.])
1573 # Get an absolute path to the GCC top-level source directory
1574 holddir=`${PWDCMD-pwd}`
1576 topdir=`${PWDCMD-pwd}`
1579 # Conditionalize the makefile for this host machine.
1581 for f in ${host_xmake_file}
1583 if test -f ${srcdir}/config/$f
1585 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1589 # Conditionalize the makefile for this target machine.
1591 for f in ${tmake_file}
1593 if test -f ${srcdir}/config/$f
1595 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1598 tmake_file="${tmake_file_}"
1600 # This is a terrible hack which will go away some day.
1601 host_cc_for_libada=${CC}
1602 AC_SUBST(host_cc_for_libada)
1604 out_object_file=`basename $out_file .c`.o
1606 tm_file_list="options.h"
1607 tm_include_list="options.h"
1608 for f in $tm_file; do
1611 f=`echo $f | sed 's/^..//'`
1612 tm_file_list="${tm_file_list} $f"
1613 tm_include_list="${tm_include_list} $f"
1616 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1617 tm_include_list="${tm_include_list} $f"
1620 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1621 tm_include_list="${tm_include_list} config/$f"
1628 for f in $tm_p_file; do
1631 tm_p_file_list="${tm_p_file_list} $f"
1632 tm_p_include_list="${tm_p_include_list} $f"
1635 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1636 tm_p_include_list="${tm_p_include_list} config/$f"
1642 for f in $xm_file; do
1645 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1646 xm_include_list="${xm_include_list} $f"
1649 xm_file_list="${xm_file_list} $f"
1650 xm_include_list="${xm_include_list} $f"
1653 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1654 xm_include_list="${xm_include_list} config/$f"
1660 host_xm_include_list=
1661 for f in $host_xm_file; do
1664 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1665 host_xm_include_list="${host_xm_include_list} $f"
1668 host_xm_file_list="${host_xm_file_list} $f"
1669 host_xm_include_list="${host_xm_include_list} $f"
1672 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1673 host_xm_include_list="${host_xm_include_list} config/$f"
1679 for f in $build_xm_file; do
1682 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1683 build_xm_include_list="${build_xm_include_list} $f"
1685 auto-build.h | auto-host.h )
1686 build_xm_file_list="${build_xm_file_list} $f"
1687 build_xm_include_list="${build_xm_include_list} $f"
1690 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1691 build_xm_include_list="${build_xm_include_list} config/$f"
1696 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1697 # cross-compiler which does not use the native headers and libraries.
1698 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1699 CROSS= AC_SUBST(CROSS)
1700 ALL=all.internal AC_SUBST(ALL)
1701 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1703 if test "x$with_build_sysroot" != x; then
1704 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1706 # This value is used, even on a native system, because
1707 # CROSS_SYSTEM_HEADER_DIR is just
1708 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1709 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1712 if test x$host != x$target
1714 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1716 SYSTEM_HEADER_DIR=$build_system_header_dir
1717 case "$host","$target" in
1718 # Darwin crosses can use the host system's libraries and headers,
1719 # because of the fat library support. Of course, it must be the
1720 # same version of Darwin on both sides. Allow the user to
1721 # just say --target=foo-darwin without a version number to mean
1722 # "the version on this system".
1723 *-*-darwin*,*-*-darwin*)
1724 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1725 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1726 if test $hostos = $targetos -o $targetos = darwin ; then
1728 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1733 i?86-*-*,x86_64-*-* \
1734 | powerpc*-*-*,powerpc64*-*-*)
1735 CROSS="$CROSS -DNATIVE_CROSS" ;;
1737 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1738 SYSTEM_HEADER_DIR=$build_system_header_dir
1741 # If this is a cross-compiler that does not
1742 # have its own set of headers then define
1745 # If this is using newlib, without having the headers available now,
1746 # then define inhibit_libc in LIBGCC2_CFLAGS.
1747 # This prevents libgcc2 from containing any code which requires libc
1749 : ${inhibit_libc=false}
1750 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1751 test x$with_newlib = xyes ; } &&
1752 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1755 AC_SUBST(inhibit_libc)
1757 # When building gcc with a cross-compiler, we need to adjust things so
1758 # that the generator programs are still built with the native compiler.
1759 # Also, we cannot run fixincludes or fix-header.
1761 # These are the normal (build=host) settings:
1762 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1763 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1764 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1765 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1767 # Possibly disable fixproto, on a per-target basis.
1768 case ${use_fixproto} in
1773 STMP_FIXPROTO=stmp-fixproto
1776 AC_SUBST(STMP_FIXPROTO)
1778 # And these apply if build != host, or we are generating coverage data
1779 if test x$build != x$host || test "x$coverage_flags" != x
1781 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1782 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1784 if test "x$TARGET_SYSTEM_ROOT" = x; then
1785 if test "x$STMP_FIXPROTO" != x; then
1786 STMP_FIXPROTO=stmp-install-fixproto
1791 # Expand extra_headers to include complete path.
1792 # This substitutes for lots of t-* files.
1794 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1795 for file in ${extra_headers} ; do
1796 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1799 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1800 if test x"$use_gcc_tgmath" = xyes
1801 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1804 # Define collect2 in Makefile.
1805 case $host_can_use_collect2 in
1807 *) collect2='collect2$(exeext)' ;;
1809 AC_SUBST([collect2])
1811 # Add a definition of USE_COLLECT2 if system wants one.
1812 case $use_collect2 in
1813 no) use_collect2= ;;
1816 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1817 xm_defines="${xm_defines} USE_COLLECT2"
1818 case $host_can_use_collect2 in
1820 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1826 # ---------------------------
1827 # Assembler & linker features
1828 # ---------------------------
1830 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1831 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1832 # However when ld-new is first executed from the build tree, libtool will
1833 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1834 # to the build tree. While doing this we need to use the previous-stage
1835 # linker, or we have an infinite loop. The presence of a shell script as
1836 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1837 # the gcc/collect-ld script. So we need to know how libtool works, or
1838 # exec-tool will fail.
1840 m4_defun([_LT_CONFIG_COMMANDS], [])
1843 AC_SUBST(enable_fast_install)
1845 # Identify the assembler which will work hand-in-glove with the newly
1846 # built GCC, so that we can examine its features. This is the assembler
1847 # which will be driven by the driver program.
1849 # If build != host, and we aren't building gas in-tree, we identify a
1850 # build->target assembler and hope that it will have the same features
1851 # as the host->target assembler we'll be using.
1852 gcc_cv_gas_major_version=
1853 gcc_cv_gas_minor_version=
1854 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1856 m4_pattern_allow([AS_FOR_TARGET])dnl
1857 AS_VAR_SET_IF(gcc_cv_as,, [
1858 if test -x "$DEFAULT_ASSEMBLER"; then
1859 gcc_cv_as="$DEFAULT_ASSEMBLER"
1860 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1861 && test -f ../gas/Makefile \
1862 && test x$build = x$host; then
1863 gcc_cv_as=../gas/as-new$build_exeext
1864 elif test -x as$build_exeext; then
1865 # Build using assembler in the current directory.
1866 gcc_cv_as=./as$build_exeext
1867 elif test -x $AS_FOR_TARGET; then
1868 gcc_cv_as="$AS_FOR_TARGET"
1870 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1873 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1874 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1875 case "$ORIGINAL_AS_FOR_TARGET" in
1876 ./as | ./as$build_exeext) ;;
1877 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1880 AC_MSG_CHECKING(what assembler to use)
1881 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1882 # Single tree build which includes gas. We want to prefer it
1883 # over whatever linker top-level may have detected, since
1884 # we'll use what we're building after installation anyway.
1885 AC_MSG_RESULT(newly built gas)
1887 _gcc_COMPUTE_GAS_VERSION
1888 in_tree_gas_is_elf=no
1889 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1890 || (grep 'obj_format = multi' ../gas/Makefile \
1891 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1893 in_tree_gas_is_elf=yes
1896 AC_MSG_RESULT($gcc_cv_as)
1900 # Identify the linker which will work hand-in-glove with the newly
1901 # built GCC, so that we can examine its features. This is the linker
1902 # which will be driven by the driver program.
1904 # If build != host, and we aren't building gas in-tree, we identify a
1905 # build->target linker and hope that it will have the same features
1906 # as the host->target linker we'll be using.
1907 gcc_cv_gld_major_version=
1908 gcc_cv_gld_minor_version=
1909 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1910 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1912 AS_VAR_SET_IF(gcc_cv_ld,, [
1913 if test -x "$DEFAULT_LINKER"; then
1914 gcc_cv_ld="$DEFAULT_LINKER"
1915 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1916 && test -f ../ld/Makefile \
1917 && test x$build = x$host; then
1918 gcc_cv_ld=../ld/ld-new$build_exeext
1919 elif test -x collect-ld$build_exeext; then
1920 # Build using linker in the current directory.
1921 gcc_cv_ld=./collect-ld$build_exeext
1922 elif test -x $LD_FOR_TARGET; then
1923 gcc_cv_ld="$LD_FOR_TARGET"
1925 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1928 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1929 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1930 case "$ORIGINAL_LD_FOR_TARGET" in
1931 ./collect-ld | ./collect-ld$build_exeext) ;;
1932 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1935 AC_MSG_CHECKING(what linker to use)
1936 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1937 # Single tree build which includes ld. We want to prefer it
1938 # over whatever linker top-level may have detected, since
1939 # we'll use what we're building after installation anyway.
1940 AC_MSG_RESULT(newly built ld)
1942 in_tree_ld_is_elf=no
1943 if (grep 'EMUL = .*elf' ../ld/Makefile \
1944 || grep 'EMUL = .*linux' ../ld/Makefile \
1945 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1946 in_tree_ld_is_elf=yes
1948 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
1951 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1952 if test x$gcc_cv_gld_version != x; then
1956 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1957 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1960 AC_MSG_RESULT($gcc_cv_ld)
1964 # Figure out what nm we will be using.
1965 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1966 AS_VAR_SET_IF(gcc_cv_nm,, [
1967 if test -f $gcc_cv_binutils_srcdir/configure.in \
1968 && test -f ../binutils/Makefile \
1969 && test x$build = x$host; then
1970 gcc_cv_nm=../binutils/nm-new$build_exeext
1971 elif test -x nm$build_exeext; then
1972 gcc_cv_nm=./nm$build_exeext
1973 elif test -x $NM_FOR_TARGET; then
1974 gcc_cv_nm="$NM_FOR_TARGET"
1976 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1979 AC_MSG_CHECKING(what nm to use)
1980 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1981 # Single tree build which includes binutils.
1982 AC_MSG_RESULT(newly built nm)
1985 AC_MSG_RESULT($gcc_cv_nm)
1989 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1990 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1991 case "$ORIGINAL_NM_FOR_TARGET" in
1992 ./nm | ./nm$build_exeext) ;;
1993 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
1997 # Figure out what objdump we will be using.
1998 AS_VAR_SET_IF(gcc_cv_objdump,, [
1999 if test -f $gcc_cv_binutils_srcdir/configure.in \
2000 && test -f ../binutils/Makefile \
2001 && test x$build = x$host; then
2002 # Single tree build which includes binutils.
2003 gcc_cv_objdump=../binutils/objdump$build_exeext
2004 elif test -x objdump$build_exeext; then
2005 gcc_cv_objdump=./objdump$build_exeext
2006 elif test -x $OBJDUMP_FOR_TARGET; then
2007 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2009 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2012 AC_MSG_CHECKING(what objdump to use)
2013 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2014 # Single tree build which includes binutils.
2015 AC_MSG_RESULT(newly built objdump)
2016 elif test x$gcc_cv_objdump = x; then
2017 AC_MSG_RESULT(not found)
2019 AC_MSG_RESULT($gcc_cv_objdump)
2022 # Figure out what assembler alignment features are present.
2023 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2027 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2028 [Define if your assembler supports .balign and .p2align.])])
2030 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2033 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2034 [Define if your assembler supports specifying the maximum number
2035 of bytes to skip when using the GAS .p2align command.])])
2037 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2040 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2041 [Define if your assembler supports .literal16.])])
2043 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2045 [conftest_label1: .word 0
2047 conftest_label2: .word 0
2049 [if test x$gcc_cv_nm != x; then
2050 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2051 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2052 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2054 else gcc_cv_as_subsection_m1=yes
2056 rm -f conftest.nm1 conftest.nm2
2058 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2059 [Define if your assembler supports .subsection and .subsection -1 starts
2060 emitting at the beginning of your section.])])
2062 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2065 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2067 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2069 [ .weakref foobar, barfnot],,
2070 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2072 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2075 .NSUBSPA $CODE$,COMDAT],,
2076 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2078 # .hidden needs to be supported in both the assembler and the linker,
2079 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2080 # This is irritatingly difficult to feature test for; we have to check the
2081 # date string after the version number. If we've got an in-tree
2082 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2084 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2085 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2090 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2091 [if test $in_tree_ld = yes ; then
2093 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2094 && test $in_tree_ld_is_elf = yes; then
2095 gcc_cv_ld_hidden=yes
2098 gcc_cv_ld_hidden=yes
2099 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2100 if echo "$ld_ver" | grep GNU > /dev/null; then
2102 ld_vers=`echo $ld_ver | sed -n \
2103 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2104 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2105 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2106 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2107 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2108 if test 0"$ld_date" -lt 20020404; then
2109 if test -n "$ld_date"; then
2110 # If there was date string, but was earlier than 2002-04-04, fail
2112 elif test -z "$ld_vers"; then
2113 # If there was no date string nor ld version number, something is wrong
2116 test -z "$ld_vers_patch" && ld_vers_patch=0
2117 if test "$ld_vers_major" -lt 2; then
2119 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2120 gcc_cv_ld_hidden="no"
2121 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2129 hppa64*-*-hpux* | ia64*-*-hpux*)
2130 gcc_cv_ld_hidden=yes
2138 libgcc_visibility=no
2139 AC_SUBST(libgcc_visibility)
2140 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2141 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2142 libgcc_visibility=yes
2143 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2144 [Define if your assembler and linker support .hidden.])
2147 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2148 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2156 [# GAS versions before 2.11 do not support uleb128,
2157 # despite appearing to.
2158 # ??? There exists an elf-specific test that will crash
2159 # the assembler. Perhaps it's better to figure out whether
2160 # arbitrary sections are supported and try the test.
2161 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2162 if echo "$as_ver" | grep GNU > /dev/null; then
2164 as_vers=`echo $as_ver | sed -n \
2165 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2166 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2167 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2169 if test $as_major -eq 2 && test $as_minor -lt 11
2171 else gcc_cv_as_leb128=yes
2174 [AC_DEFINE(HAVE_AS_LEB128, 1,
2175 [Define if your assembler supports .sleb128 and .uleb128.])])
2177 # GAS versions up to and including 2.11.0 may mis-optimize
2179 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2187 .section .eh_frame,"aw",@progbits
2189 .4byte .LECIE1-.LSCIE1
2203 .4byte .LEFDE1-.LASFDE1
2205 .4byte .LASFDE1-__FRAME_BEGIN__
2213 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2214 cat > conftest.lit <<EOF
2215 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2216 0010 01000000 12000000 18000000 00000000 ................
2217 0020 08000000 04080000 0044 .........D @&t@
2219 cat > conftest.big <<EOF
2220 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2221 0010 00000001 00000012 00000018 00000000 ................
2222 0020 00000008 04000000 0844 .........D @&t@
2224 # If the assembler didn't choke, and we can objdump,
2225 # and we got the correct data, then succeed.
2226 # The text in the here-document typically retains its unix-style line
2227 # endings, while the output of objdump will use host line endings.
2228 # Therefore, use diff -b for the comparisons.
2229 if test x$gcc_cv_objdump != x \
2230 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2231 | tail -3 > conftest.got \
2232 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2233 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2235 gcc_cv_as_eh_frame=yes
2236 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2237 gcc_cv_as_eh_frame=buggy
2239 # Uh oh, what do we do now?
2240 gcc_cv_as_eh_frame=no
2243 if test $gcc_cv_as_eh_frame = buggy; then
2244 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2245 [Define if your assembler mis-optimizes .eh_frame data.])
2248 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2249 [elf,2,12,0], [--fatal-warnings],
2250 [.section .rodata.str, "aMS", @progbits, 1])
2251 if test $gcc_cv_as_shf_merge = no; then
2252 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2253 [elf,2,12,0], [--fatal-warnings],
2254 [.section .rodata.str, "aMS", %progbits, 1])
2256 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2257 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2258 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2260 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2261 [elf,2,16,0], [--fatal-warnings],
2262 [.section .text,"axG",@progbits,.foo,comdat])
2263 if test $gcc_cv_as_comdat_group = yes; then
2264 gcc_cv_as_comdat_group_percent=no
2266 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2267 [elf,2,16,0], [--fatal-warnings],
2268 [.section .text,"axG",%progbits,.foo,comdat])
2270 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2272 if test 0"$ld_date" -lt 20050308; then
2273 if test -n "$ld_date"; then
2274 # If there was date string, but was earlier than 2005-03-08, fail
2276 elif test "$ld_vers_major" -lt 2; then
2278 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2283 # assume linkers other than GNU ld don't support COMDAT group
2286 if test $comdat_group = no; then
2287 gcc_cv_as_comdat_group=no
2288 gcc_cv_as_comdat_group_percent=no
2290 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2291 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2292 [Define 0/1 if your assembler and linker support COMDAT groups.])
2294 # Thread-local storage - the check is heavily parametrized.
2303 .section ".tdata","awT",@progbits
2306 ldq $27,__tls_get_addr($29) !literal!1
2307 lda $16,foo($29) !tlsgd!1
2308 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2309 ldq $27,__tls_get_addr($29) !literal!2
2310 lda $16,foo($29) !tlsldm!2
2311 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2312 ldq $1,foo($29) !gotdtprel
2313 ldah $2,foo($29) !dtprelhi
2314 lda $3,foo($2) !dtprello
2315 lda $4,foo($29) !dtprel
2316 ldq $1,foo($29) !gottprel
2317 ldah $2,foo($29) !tprelhi
2318 lda $3,foo($2) !tprello
2319 lda $4,foo($29) !tprel'
2322 tls_as_opt=--fatal-warnings
2326 .section ".tdata","awT",@progbits
2338 .section ".tdata","awT",@progbits
2342 addil LT%foo-$tls_gdidx$,gp
2343 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2346 addil LT%foo-$tls_ldidx$,gp
2348 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2349 addil LR%foo-$tls_dtpoff$,%ret0
2350 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2352 addil LT%foo-$tls_ieoff$,gp
2353 ldw RT%foo-$tls_ieoff$(%r1),%t2
2356 addil LR%foo-$tls_leoff$,%t1
2357 ldo RR%foo-$tls_leoff$(%r1),%t2'
2360 tls_as_opt=--fatal-warnings
2364 .section ".tdata","awT",%progbits
2377 .section ".tdata","awT",@progbits
2381 leal foo@TLSGD(,%ebx,1), %eax
2382 leal foo@TLSLDM(%ebx), %eax
2383 leal foo@DTPOFF(%eax), %edx
2384 movl foo@GOTTPOFF(%ebx), %eax
2385 subl foo@GOTTPOFF(%ebx), %eax
2386 addl foo@GOTNTPOFF(%ebx), %eax
2387 movl foo@INDNTPOFF, %eax
2388 movl $foo@TPOFF, %eax
2389 subl $foo@TPOFF, %eax
2390 leal foo@NTPOFF(%ecx), %eax'
2393 tls_as_opt=--fatal-warnings
2397 .section ".tdata","awT",@progbits
2401 leaq foo@TLSGD(%rip), %rdi
2402 leaq foo@TLSLD(%rip), %rdi
2403 leaq foo@DTPOFF(%rax), %rdx
2404 movq foo@GOTTPOFF(%rip), %rax
2405 movq $foo@TPOFF, %rax'
2408 tls_as_opt=--fatal-warnings
2412 .section ".tdata","awT",@progbits
2415 addl r16 = @ltoff(@dtpmod(foo#)), gp
2416 addl r17 = @ltoff(@dtprel(foo#)), gp
2417 addl r18 = @ltoff(@tprel(foo#)), gp
2418 addl r19 = @dtprel(foo#), gp
2419 adds r21 = @dtprel(foo#), r13
2420 movl r23 = @dtprel(foo#)
2421 addl r20 = @tprel(foo#), gp
2422 adds r22 = @tprel(foo#), r13
2423 movl r24 = @tprel(foo#)'
2426 tls_as_opt=--fatal-warnings
2430 .section .tdata,"awT",@progbits
2434 addiu $4, $28, %tlsgd(x)
2435 addiu $4, $28, %tlsldm(x)
2436 lui $4, %dtprel_hi(x)
2437 addiu $4, $4, %dtprel_lo(x)
2438 lw $4, %gottprel(x)($28)
2439 lui $4, %tprel_hi(x)
2440 addiu $4, $4, %tprel_lo(x)'
2443 tls_as_opt='-32 --fatal-warnings'
2447 .section ".tdata","awT",@progbits
2455 addi 3,31,ld0@got@tlsgd
2457 addi 3,31,x1@got@tlsld
2460 addis 9,3,x2@dtprel@ha
2461 addi 9,9,x2@dtprel@l
2462 lwz 9,x3@got@tprel(31)
2465 addis 9,2,x2@tprel@ha
2466 addi 9,9,x2@tprel@l'
2469 tls_as_opt="-a32 --fatal-warnings"
2473 .section ".tdata","awT",@progbits
2481 addi 3,2,ld0@got@tlsgd
2487 addi 3,2,x1@got@tlsld
2493 addis 9,3,x2@dtprel@ha
2494 addi 9,9,x2@dtprel@l
2497 ld 9,x3@got@dtprel(2)
2503 tls_as_opt="-a64 --fatal-warnings"
2507 .section ".tdata","awT",@progbits
2516 l %r1,foo@GOTNTPOFF(%r12)
2517 l %r1,0(%r1):tls_load:foo
2518 bas %r14,0(%r1,%r13):tls_gdcall:foo
2519 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2522 tls_as_opt="-m31 --fatal-warnings"
2526 .section ".tdata","awT",@progbits
2534 lg %r1,foo@GOTNTPOFF(%r12)
2535 larl %r1,foo@INDNTPOFF
2536 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2537 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2540 tls_as_opt="-m64 -Aesame --fatal-warnings"
2542 sh-*-* | sh[34]-*-*)
2544 .section ".tdata","awT",@progbits
2554 tls_as_opt=--fatal-warnings
2558 sparc*-sun-solaris2.[56789]*)
2559 # TLS was introduced in the Solaris 9 4/04 release but
2560 # we do not enable it by default on Solaris 9 either.
2561 if test "x$enable_tls" = xyes ; then
2567 sparc*-sun-solaris2.*)
2574 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2576 .section ".tdata",#alloc,#write,#tls
2579 sethi %tgd_hi22(foo), %o0
2580 add %o0, %tgd_lo10(foo), %o1
2581 add %l7, %o1, %o0, %tgd_add(foo)
2582 call __tls_get_addr, %tgd_call(foo)
2583 sethi %tldm_hi22(foo), %l1
2584 add %l1, %tldm_lo10(foo), %l2
2585 add %l7, %l2, %o0, %tldm_add(foo)
2586 call __tls_get_addr, %tldm_call(foo)
2587 sethi %tldo_hix22(foo), %l3
2588 xor %l3, %tldo_lox10(foo), %l4
2589 add %o0, %l4, %l5, %tldo_add(foo)
2590 sethi %tie_hi22(foo), %o3
2591 add %o3, %tie_lo10(foo), %o3
2592 ld [%l7 + %o3], %o2, %tie_ld(foo)
2593 add %g7, %o2, %o4, %tie_add(foo)
2594 sethi %tle_hix22(foo), %l1
2595 xor %l1, %tle_lox10(foo), %o5
2596 ld [%g7 + %o5], %o1'
2601 .section ".tdata","awT",@progbits
2604 sethi %tgd_hi22(foo), %o0
2605 add %o0, %tgd_lo10(foo), %o1
2606 add %l7, %o1, %o0, %tgd_add(foo)
2607 call __tls_get_addr, %tgd_call(foo)
2608 sethi %tldm_hi22(foo), %l1
2609 add %l1, %tldm_lo10(foo), %l2
2610 add %l7, %l2, %o0, %tldm_add(foo)
2611 call __tls_get_addr, %tldm_call(foo)
2612 sethi %tldo_hix22(foo), %l3
2613 xor %l3, %tldo_lox10(foo), %l4
2614 add %o0, %l4, %l5, %tldo_add(foo)
2615 sethi %tie_hi22(foo), %o3
2616 add %o3, %tie_lo10(foo), %o3
2617 ld [%l7 + %o3], %o2, %tie_ld(foo)
2618 add %g7, %o2, %o4, %tie_add(foo)
2619 sethi %tle_hix22(foo), %l1
2620 xor %l1, %tle_lox10(foo), %o5
2621 ld [%g7 + %o5], %o1'
2624 tls_as_opt="-32 --fatal-warnings"
2630 if test "x$enable_tls" = xno ; then
2631 : # TLS explicitly disabled.
2632 elif test "x$enable_tls" = xyes ; then
2633 set_have_as_tls=yes # TLS explicitly enabled.
2634 elif test -z "$tls_first_major"; then
2635 : # If we don't have a check, assume no support.
2637 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2638 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2639 [set_have_as_tls=yes])
2641 if test $set_have_as_tls = yes ; then
2642 AC_DEFINE(HAVE_AS_TLS, 1,
2643 [Define if your assembler supports thread-local storage.])
2646 # Target-specific assembler checks.
2648 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2649 gcc_cv_ld_static_dynamic=no
2650 if test $in_tree_ld = yes ; then
2651 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2652 gcc_cv_ld_static_dynamic=yes
2654 elif test x$gcc_cv_ld != x; then
2655 # Check if linker supports -Bstatic/-Bdynamic option
2656 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2657 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2658 gcc_cv_ld_static_dynamic=yes
2661 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2662 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2663 [Define if your linker supports -Bstatic/-Bdynamic option.])
2665 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2667 if test x"$demangler_in_ld" = xyes; then
2668 AC_MSG_CHECKING(linker --demangle support)
2669 gcc_cv_ld_demangle=no
2670 if test $in_tree_ld = yes; then
2671 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2672 gcc_cv_ld_demangle=yes
2674 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2675 # Check if the GNU linker supports --demangle option
2676 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2677 gcc_cv_ld_demangle=yes
2680 if test x"$gcc_cv_ld_demangle" = xyes; then
2681 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2682 [Define if your linker supports --demangle option.])
2684 AC_MSG_RESULT($gcc_cv_ld_demangle)
2688 # All TARGET_ABI_OSF targets.
2689 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2690 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2691 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2694 extbl $3, $2, $3 !lituse_bytoff!1
2695 ldq $2, a($29) !literal!1
2696 ldq $4, b($29) !literal!2
2697 ldq_u $3, 0($2) !lituse_base!1
2698 ldq $27, f($29) !literal!5
2699 jsr $26, ($27), f !lituse_jsr!5
2700 ldah $29, 0($26) !gpdisp!3
2701 lda $0, c($29) !gprel
2702 ldah $1, d($29) !gprelhigh
2703 lda $1, d($1) !gprellow
2704 lda $29, 0($29) !gpdisp!3],,
2705 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2706 [Define if your assembler supports explicit relocations.])])
2707 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2708 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2711 ldq $27, a($29) !literal!1
2712 jsr $26, ($27), a !lituse_jsrdirect!1],,
2713 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2714 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2718 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2719 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2720 [-no-mul-bug-abort], [.text],,
2721 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2722 [Define if your assembler supports the -no-mul-bug-abort option.])])
2726 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2727 [.register %g2, #scratch],,
2728 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2729 [Define if your assembler supports .register.])])
2731 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2733 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2734 [Define if your assembler supports -relax option.])])
2736 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2737 gcc_cv_as_sparc_ua_pcrel,,
2745 .uaword %r_disp32(foo)],
2746 [if test x$gcc_cv_ld != x \
2747 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2748 gcc_cv_as_sparc_ua_pcrel=yes
2751 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2752 [Define if your assembler and linker support unaligned PC relative relocs.])
2754 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2755 gcc_cv_as_sparc_ua_pcrel_hidden,,
2760 .uaword %r_disp32(foo)
2761 .byte 0x32, 0x33, 0x34
2766 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2767 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2768 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2769 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2770 if $gcc_cv_objdump -R conftest 2> /dev/null \
2771 | grep 'DISP32' > /dev/null 2>&1; then
2774 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2778 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2779 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2780 ]) # unaligned pcrel relocs
2782 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2783 gcc_cv_as_sparc_offsetable_lo10,,
2786 or %g1, %lo(ab) + 12, %g1
2787 or %g1, %lo(ab + 12), %g1],
2788 [if test x$gcc_cv_objdump != x \
2789 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2790 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2791 gcc_cv_as_sparc_offsetable_lo10=yes
2793 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2794 [Define if your assembler supports offsetable %lo().])])
2798 i[34567]86-*-* | x86_64-*-*)
2801 cygwin* | pe | mingw32*)
2802 # Used for DWARF 2 in PE
2803 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2804 gcc_cv_as_ix86_pe_secrel32,
2810 [if test x$gcc_cv_ld != x \
2811 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2812 gcc_cv_as_ix86_pe_secrel32=yes
2815 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2816 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2820 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2821 gcc_cv_as_ix86_filds_fists,
2822 [2,9,0],, [filds mem; fists mem],,
2823 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2824 [Define if your assembler uses the new HImode fild and fist notation.])])
2826 gcc_GAS_CHECK_FEATURE([cmov syntax],
2827 gcc_cv_as_ix86_cmov_sun_syntax,,,
2828 [cmovl.l %edx, %eax],,
2829 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2830 [Define if your assembler supports the Sun syntax for cmov.])])
2832 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2833 gcc_cv_as_ix86_ffreep,,,
2835 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2836 [Define if your assembler supports the ffreep mnemonic.])])
2838 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
2839 gcc_cv_as_ix86_sahf,,,
2841 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
2842 [Define if your assembler supports the sahf mnemonic.])])
2844 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2845 gcc_cv_as_ix86_diff_sect_delta,,,
2853 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2854 [Define if your assembler supports the subtraction of symbols in different sections.])])
2856 # This one is used unconditionally by i386.[ch]; it is to be defined
2857 # to 1 if the feature is present, 0 otherwise.
2858 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2859 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2865 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2866 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2867 [Define true if the assembler supports '.long foo@GOTOFF'.])
2871 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2872 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2874 addl r15 = @ltoffx(x#), gp
2876 ld8.mov r16 = [[r15]], x#],,
2877 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2878 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2884 *-*-aix*) conftest_s=' .machine "pwr5"
2888 gcc_GAS_CHECK_FEATURE([.machine directive support],
2889 gcc_cv_as_machine_directive,,,
2890 [ .machine ppc7400])
2891 if test x$gcc_cv_as_machine_directive != xyes; then
2892 echo "*** This target requires an assembler supporting \".machine\"" >&2
2893 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2894 test x$build = x$target && exit 1
2898 *) conftest_s=' .machine power4
2903 gcc_GAS_CHECK_FEATURE([mfcr field support],
2904 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2906 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2907 [Define if your assembler supports mfcr field.])])
2910 *-*-aix*) conftest_s=' .machine "pwr5"
2913 *) conftest_s=' .machine power5
2918 gcc_GAS_CHECK_FEATURE([popcntb support],
2919 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2921 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2922 [Define if your assembler supports popcntb field.])])
2925 *-*-aix*) conftest_s=' .machine "pwr5x"
2928 *) conftest_s=' .machine power5
2933 gcc_GAS_CHECK_FEATURE([fp round support],
2934 gcc_cv_as_powerpc_fprnd, [2,17,0],,
2936 [AC_DEFINE(HAVE_AS_FPRND, 1,
2937 [Define if your assembler supports fprnd.])])
2940 *-*-aix*) conftest_s=' .machine "pwr6"
2943 *) conftest_s=' .machine power6
2948 gcc_GAS_CHECK_FEATURE([move fp gpr support],
2949 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
2951 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
2952 [Define if your assembler supports mffgpr and mftgpr.])])
2955 *-*-aix*) conftest_s=' .csect .text[[PR]]
2957 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2961 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2962 *) conftest_s=' .text
2964 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2967 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2968 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2970 [AC_DEFINE(HAVE_AS_REL16, 1,
2971 [Define if your assembler supports R_PPC_REL16 relocs.])])
2974 *-*-aix*) conftest_s=' .machine "pwr6"
2977 *) conftest_s=' .machine power6
2982 gcc_GAS_CHECK_FEATURE([compare bytes support],
2983 gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
2985 [AC_DEFINE(HAVE_AS_CMPB, 1,
2986 [Define if your assembler supports cmpb.])])
2989 *-*-aix*) conftest_s=' .machine "pwr6"
2992 *) conftest_s=' .machine power6
2997 gcc_GAS_CHECK_FEATURE([decimal float support],
2998 gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
3000 [AC_DEFINE(HAVE_AS_DFP, 1,
3001 [Define if your assembler supports DFP instructions.])])
3003 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3004 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3005 [.gnu_attribute 4,1],,
3006 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3007 [Define if your assembler supports .gnu_attribute.])])
3011 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3012 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3013 [ lw $4,%gp_rel(foo)($4)],,
3014 [if test x$target_cpu_default = x
3015 then target_cpu_default=MASK_EXPLICIT_RELOCS
3016 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3018 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3019 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3020 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3021 [Define if the assembler understands -mno-shared.])])
3023 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3024 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3025 [.gnu_attribute 4,1],,
3026 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3027 [Define if your assembler supports .gnu_attribute.])])
3029 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3030 gcc_cv_as_mips_dtprelword, [2,18,0],,
3031 [.section .tdata,"awT",@progbits
3035 .dtprelword x+0x8000],,
3036 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3037 [Define if your assembler supports .dtprelword.])])
3041 # Mips and HP-UX need the GNU assembler.
3042 # Linux on IA64 might be able to use the Intel assembler.
3045 mips*-*-* | *-*-hpux* )
3046 if test x$gas_flag = xyes \
3047 || test x"$host" != x"$build" \
3048 || test ! -x "$gcc_cv_as" \
3049 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3052 echo "*** This configuration requires the GNU assembler" >&2
3058 # ??? Not all targets support dwarf2 debug_line, even within a version
3059 # of gas. Moreover, we need to emit a valid instruction to trigger any
3060 # info to the output file. So, as supported targets are added to gas 2.11,
3061 # add some instruction here to (also) show we expect this might work.
3062 # ??? Once 2.11 is released, probably need to add first known working
3063 # version to the per-target configury.
3065 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3066 | x86_64*-*-* | hppa*-*-* | arm*-*-* \
3067 | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-* \
3068 | spu-*-* | fido*-*-*)
3071 ia64*-*-* | s390*-*-*)
3078 if test x"$insn" != x; then
3080 .file 1 \"conftest.s\"
3083 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3084 gcc_cv_as_dwarf2_debug_line,
3085 [elf,2,11,0],, [$conftest_s],
3086 [if test x$gcc_cv_objdump != x \
3087 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3088 | grep debug_line > /dev/null 2>&1; then
3089 gcc_cv_as_dwarf2_debug_line=yes
3092 # The .debug_line file table must be in the exact order that
3093 # we specified the files, since these indices are also used
3094 # by DW_AT_decl_file. Approximate this test by testing if
3095 # the assembler bitches if the same index is assigned twice.
3096 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3097 gcc_cv_as_dwarf2_file_buggy,,,
3101 if test $gcc_cv_as_dwarf2_debug_line = yes \
3102 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3103 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3104 [Define if your assembler supports dwarf2 .file/.loc directives,
3105 and preserves file table indices exactly as given.])
3108 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3109 gcc_cv_as_gdwarf2_flag,
3110 [elf,2,11,0], [--gdwarf2], [$insn],,
3111 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3112 [Define if your assembler supports the --gdwarf2 option.])])
3114 gcc_GAS_CHECK_FEATURE([--gstabs option],
3115 gcc_cv_as_gstabs_flag,
3116 [elf,2,11,0], [--gstabs], [$insn],
3117 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3118 # and warns about it, but still exits successfully. So check for
3120 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3122 else gcc_cv_as_gstabs_flag=yes
3124 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3125 [Define if your assembler supports the --gstabs option.])])
3127 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3128 gcc_cv_as_debug_prefix_map_flag,
3129 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3130 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3131 [Define if your assembler supports the --debug-prefix-map option.])])
3134 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3135 [gcc_cv_as_line_zero],
3136 [gcc_cv_as_line_zero=no
3137 if test $in_tree_gas = yes; then
3138 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3139 elif test "x$gcc_cv_as" != x; then
3140 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3141 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3142 test "x`cat conftest.out`" = x
3144 gcc_cv_as_line_zero=yes
3146 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3147 cat conftest.s >&AS_MESSAGE_LOG_FD
3148 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3149 cat conftest.out >&AS_MESSAGE_LOG_FD
3151 rm -f conftest.o conftest.s conftest.out
3153 if test "x$gcc_cv_as_line_zero" = xyes; then
3154 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3155 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3158 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3159 gcc_cv_ld_ro_rw_mix=unknown
3160 if test $in_tree_ld = yes ; then
3161 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3162 && test $in_tree_ld_is_elf = yes; then
3163 gcc_cv_ld_ro_rw_mix=read-write
3165 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3166 echo '.section myfoosect, "a"' > conftest1.s
3167 echo '.section myfoosect, "aw"' > conftest2.s
3168 echo '.byte 1' >> conftest2.s
3169 echo '.section myfoosect, "a"' > conftest3.s
3170 echo '.byte 0' >> conftest3.s
3171 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3172 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3173 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3174 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3175 conftest2.o conftest3.o > /dev/null 2>&1; then
3176 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3177 | sed -e '/myfoosect/!d' -e N`
3178 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3179 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3180 gcc_cv_ld_ro_rw_mix=read-only
3182 gcc_cv_ld_ro_rw_mix=read-write
3187 rm -f conftest.* conftest[123].*
3190 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3191 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3192 [Define if your linker links a mix of read-only
3193 and read-write sections into a read-write section.])
3195 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3197 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3198 gcc_cv_ld_eh_frame_hdr=no
3199 if test $in_tree_ld = yes ; then
3200 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3201 && test $in_tree_ld_is_elf = yes; then
3202 gcc_cv_ld_eh_frame_hdr=yes
3204 elif test x$gcc_cv_ld != x; then
3205 # Check if linker supports --eh-frame-hdr option
3206 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3207 gcc_cv_ld_eh_frame_hdr=yes
3210 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3211 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3212 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3213 [Define if your linker supports --eh-frame-hdr option.])
3215 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3217 AC_MSG_CHECKING(linker position independent executable support)
3219 if test $in_tree_ld = yes ; then
3220 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3221 && test $in_tree_ld_is_elf = yes; then
3224 elif test x$gcc_cv_ld != x; then
3225 # Check if linker supports -pie option
3226 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3230 if test x"$gcc_cv_ld_pie" = xyes; then
3231 AC_DEFINE(HAVE_LD_PIE, 1,
3232 [Define if your linker supports -pie option.])
3234 AC_MSG_RESULT($gcc_cv_ld_pie)
3236 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3237 gcc_cv_ld_eh_gc_sections=no
3238 if test $in_tree_ld = yes ; then
3239 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3240 && test $in_tree_ld_is_elf = yes; then
3241 gcc_cv_ld_eh_gc_sections=yes
3243 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3244 cat > conftest.s <<EOF
3247 .type _start, @function
3250 .size _start, .-_start
3251 .section .text.foo,"ax",@progbits
3252 .type foo, @function
3256 .section .gcc_except_table.foo,"a",@progbits
3259 .section .eh_frame,"a",@progbits
3262 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3263 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3264 | grep "gc-sections option ignored" > /dev/null; then
3265 gcc_cv_ld_eh_gc_sections=no
3266 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3267 gcc_cv_ld_eh_gc_sections=yes
3268 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3269 if test x$gcc_cv_as_comdat_group != xyes; then
3270 gcc_cv_ld_eh_gc_sections=no
3271 cat > conftest.s <<EOF
3274 .type _start, @function
3277 .size _start, .-_start
3278 .section .gnu.linkonce.t.foo,"ax",@progbits
3279 .type foo, @function
3283 .section .gcc_except_table.foo,"a",@progbits
3286 .section .eh_frame,"a",@progbits
3289 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3290 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3291 | grep "gc-sections option ignored" > /dev/null; then
3292 gcc_cv_ld_eh_gc_sections=no
3293 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3294 gcc_cv_ld_eh_gc_sections=yes
3300 rm -f conftest.s conftest.o conftest
3304 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3305 gcc_cv_ld_eh_gc_sections=no
3308 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3309 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3310 [Define if your linker supports garbage collection of
3311 sections in presence of EH frames.])
3313 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3319 AC_CACHE_CHECK(linker --as-needed support,
3320 gcc_cv_ld_as_needed,
3321 [gcc_cv_ld_as_needed=no
3322 if test $in_tree_ld = yes ; then
3323 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3324 && test $in_tree_ld_is_elf = yes; then
3325 gcc_cv_ld_as_needed=yes
3327 elif test x$gcc_cv_ld != x; then
3328 # Check if linker supports --as-needed and --no-as-needed options
3329 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3330 gcc_cv_ld_as_needed=yes
3334 if test x"$gcc_cv_ld_as_needed" = xyes; then
3335 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3336 [Define if your linker supports --as-needed and --no-as-needed options.])
3339 case "$target:$tm_file" in
3340 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3341 AC_CACHE_CHECK(linker support for omitting dot symbols,
3342 gcc_cv_ld_no_dot_syms,
3343 [gcc_cv_ld_no_dot_syms=no
3344 if test $in_tree_ld = yes ; then
3345 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3346 gcc_cv_ld_no_dot_syms=yes
3348 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3349 cat > conftest1.s <<EOF
3353 cat > conftest2.s <<EOF
3354 .section ".opd","aw"
3359 .quad .LEfoo,.TOC.@tocbase,0
3365 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3366 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3367 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3368 gcc_cv_ld_no_dot_syms=yes
3370 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3373 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3374 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3375 [Define if your PowerPC64 linker only needs function descriptor syms.])
3380 AC_CACHE_CHECK(linker --sysroot support,
3382 [gcc_cv_ld_sysroot=no
3383 if test $in_tree_ld = yes ; then
3384 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3385 gcc_cv_ld_sysroot=yes
3387 elif test x$gcc_cv_ld != x; then
3388 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3389 gcc_cv_ld_sysroot=yes
3392 if test x"$gcc_cv_ld_sysroot" = xyes; then
3393 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3394 [Define if your linker supports --sysroot.])
3397 if test x$with_sysroot = x && test x$host = x$target \
3398 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3399 && test "$prefix" != "NONE"; then
3400 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3401 [Define to PREFIX/include if cpp should also search that directory.])
3404 # Test for stack protector support in target C library.
3405 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3406 gcc_cv_libc_provides_ssp,
3407 [gcc_cv_libc_provides_ssp=no
3410 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3411 if test "x$with_sysroot" = x; then
3412 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3413 elif test "x$with_build_sysroot" != "x"; then
3414 glibc_header_dir="${with_build_sysroot}/usr/include"
3415 elif test "x$with_sysroot" = xyes; then
3416 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3418 glibc_header_dir="${with_sysroot}/usr/include"
3421 glibc_header_dir=/usr/include
3423 # glibc 2.4 and later provides __stack_chk_fail and
3424 # either __stack_chk_guard, or TLS access to stack guard canary.
3425 if test -f $glibc_header_dir/features.h \
3426 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3427 $glibc_header_dir/features.h > /dev/null; then
3428 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3429 $glibc_header_dir/features.h > /dev/null; then
3430 gcc_cv_libc_provides_ssp=yes
3431 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3432 $glibc_header_dir/features.h > /dev/null \
3433 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3434 $glibc_header_dir/features.h > /dev/null; then
3435 gcc_cv_libc_provides_ssp=yes
3436 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
3437 $glibc_header_dir/features.h > /dev/null && \
3438 test -f $glibc_header_dir/bits/uClibc_config.h && \
3439 $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
3440 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
3441 gcc_cv_libc_provides_ssp=yes
3446 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3447 [echo "no __stack_chk_fail on this target"])
3449 *) gcc_cv_libc_provides_ssp=no ;;
3452 if test x$gcc_cv_libc_provides_ssp = xyes; then
3453 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3454 [Define if your target C library provides stack protector support])
3457 # Check if TFmode long double should be used by default or not.
3458 # Some glibc targets used DFmode long double, but with glibc 2.4
3459 # and later they can use TFmode.
3461 powerpc*-*-linux* | \
3466 AC_ARG_WITH(long-double-128,
3467 [ --with-long-double-128 Use 128-bit long double by default.],
3468 gcc_cv_target_ldbl128="$with_long_double_128",
3469 [gcc_cv_target_ldbl128=no
3470 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3471 if test "x$with_sysroot" = x; then
3472 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3473 elif test "x$with_build_sysroot" != "x"; then
3474 glibc_header_dir="${with_build_sysroot}/usr/include"
3475 elif test "x$with_sysroot" = xyes; then
3476 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3478 glibc_header_dir="${with_sysroot}/usr/include"
3481 glibc_header_dir=/usr/include
3484 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3485 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3486 && gcc_cv_target_ldbl128=yes
3491 if test x$gcc_cv_target_ldbl128 = xyes; then
3492 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3493 [Define if TFmode long double should be the default])
3496 # Find out what GC implementation we want, or may, use.
3498 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3506 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3509 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3514 echo "Using $GGC for garbage collection."
3516 # Use the system's zlib library.
3518 zlibinc="-I\$(srcdir)/../zlib"
3519 AC_ARG_WITH(system-zlib,
3520 [ --with-system-zlib use installed libz],
3527 dnl Very limited version of automake's enable-maintainer-mode
3529 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3530 dnl maintainer-mode is disabled by default
3531 AC_ARG_ENABLE(maintainer-mode,
3532 [ --enable-maintainer-mode
3533 enable make rules and dependencies not useful
3534 (and sometimes confusing) to the casual installer],
3535 maintainer_mode=$enableval,
3538 AC_MSG_RESULT($maintainer_mode)
3540 if test "$maintainer_mode" = "yes"; then
3551 # Make empty files to contain the specs and options for each language.
3552 # Then add #include lines to for a compiler that has specs and/or options.
3558 # These (without "all_") are set in each config-lang.in.
3559 # `language' must be a single word so is spelled singularly.
3562 all_outputs='Makefile gccbug libada-mk'
3563 # List of language makefile fragments.
3565 # List of language subdirectory makefiles. Deprecated.
3567 # Additional files for gengtype
3568 all_gtfiles="$target_gtfiles"
3570 # These are the languages that are set in --enable-languages,
3571 # and are available in the GCC tree.
3572 all_selected_languages=
3574 # Add the language fragments.
3575 # Languages are added via two mechanisms. Some information must be
3576 # recorded in makefile variables, these are defined in config-lang.in.
3577 # We accumulate them and plug them into the main Makefile.
3578 # The other mechanism is a set of hooks for each of the main targets
3579 # like `clean', `install', etc.
3581 language_hooks="Make-hooks"
3583 for lang in ${srcdir}/*/config-lang.in
3586 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3588 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3589 if test "x$lang_alias" = x
3591 echo "$lang doesn't set \$language." 1>&2
3594 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3595 subdirs="$subdirs $subdir"
3597 # $gcc_subdir is where the gcc integration files are to be found
3598 # for a language, both for internal compiler purposes (compiler
3599 # sources implementing front-end to GCC tree converters), and for
3600 # build infrastructure purposes (Make-lang.in, etc.)
3602 # This will be <subdir> (relative to $srcdir) if a line like
3603 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
3604 # is found in <langdir>/config-lang.in, and will remain <langdir>
3607 # Except for the language alias (fetched above), the regular
3608 # "config-lang.in" contents are always retrieved from $gcc_subdir,
3609 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
3610 # only this and the language alias.
3612 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
3613 if [ "$gcc_subdir" = "" ]; then
3614 gcc_subdir="$subdir"
3617 case ",$enable_languages," in
3619 all_selected_languages="$all_selected_languages $lang_alias"
3620 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
3621 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
3633 . ${srcdir}/$gcc_subdir/config-lang.in
3634 if test "x$language" = x
3636 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
3641 case ",$enable_languages," in
3644 for i in $subdir_requires; do
3645 test -f "${srcdir}/$i/config-lang.in" && continue
3653 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
3654 if test -f $srcdir/$gcc_subdir/lang.opt; then
3655 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
3657 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
3658 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
3660 if test -f ${srcdir}/$gcc_subdir/Makefile.in
3661 then all_lang_makefiles="$gcc_subdir/Makefile"
3663 all_languages="$all_languages $language"
3664 all_compilers="$all_compilers $compilers"
3665 all_outputs="$all_outputs $outputs"
3666 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
3669 # Pick up gtfiles for c
3671 . ${srcdir}/c-config-lang.in
3672 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
3675 for language in $all_selected_languages
3677 check_languages="$check_languages check-$language"
3680 # We link each language in with a set of hooks, reached indirectly via
3681 # lang.${target}. Only do so for selected languages.
3685 target_list="all.cross start.encap rest.encap tags \
3686 install-common install-man install-info install-pdf dvi pdf \
3687 html uninstall info man srcextra srcman srcinfo \
3688 mostlyclean clean distclean maintainer-clean"
3690 for t in $target_list
3693 for lang in $all_selected_languages
3697 echo "lang.$t: $x" >> Make-hooks
3706 echo "dir ." > .gdbinit
3707 echo "dir ${srcdir}" >> .gdbinit
3708 if test x$gdb_needs_out_file_path = xyes
3710 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3712 if test "x$subdirs" != x; then
3715 echo "dir ${srcdir}/$s" >> .gdbinit
3718 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3720 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
3721 AC_SUBST(gcc_tooldir)
3724 # Find a directory in which to install a shared libgcc.
3726 AC_ARG_ENABLE(version-specific-runtime-libs,
3727 [ --enable-version-specific-runtime-libs
3728 specify that runtime libraries should be
3729 installed in a compiler-specific directory])
3731 AC_ARG_WITH(slibdir,
3732 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3733 slibdir="$with_slibdir",
3734 if test "${enable_version_specific_runtime_libs+set}" = set; then
3735 slibdir='$(libsubdir)'
3736 elif test "$host" != "$target"; then
3737 slibdir='$(build_tooldir)/lib'
3743 AC_ARG_WITH(datarootdir,
3744 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3745 datarootdir="\${prefix}/$with_datarootdir",
3746 datarootdir='$(prefix)/share')
3747 AC_SUBST(datarootdir)
3750 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3751 docdir="\${prefix}/$with_docdir",
3752 docdir='$(datarootdir)')
3755 AC_ARG_WITH(htmldir,
3756 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3757 htmldir="\${prefix}/$with_htmldir",
3758 htmldir='$(docdir)')
3761 # Substitute configuration variables
3764 AC_SUBST(all_compilers)
3765 AC_SUBST(all_gtfiles)
3766 AC_SUBST(all_lang_makefrags)
3767 AC_SUBST(all_lang_makefiles)
3768 AC_SUBST(all_languages)
3769 AC_SUBST(all_selected_languages)
3770 AC_SUBST(build_exeext)
3771 AC_SUBST(build_install_headers_dir)
3772 AC_SUBST(build_xm_file_list)
3773 AC_SUBST(build_xm_include_list)
3774 AC_SUBST(build_xm_defines)
3775 AC_SUBST(build_file_translate)
3776 AC_SUBST(check_languages)
3777 AC_SUBST(cpp_install_dir)
3778 AC_SUBST(xmake_file)
3779 AC_SUBST(tmake_file)
3780 AC_SUBST(extra_gcc_objs)
3781 AC_SUBST(extra_headers_list)
3782 AC_SUBST(extra_objs)
3783 AC_SUBST(extra_parts)
3784 AC_SUBST(extra_passes)
3785 AC_SUBST(extra_programs)
3786 AC_SUBST(float_h_file)
3787 AC_SUBST(gcc_config_arguments)
3788 AC_SUBST(gcc_gxx_include_dir)
3789 AC_SUBST(host_exeext)
3790 AC_SUBST(host_xm_file_list)
3791 AC_SUBST(host_xm_include_list)
3792 AC_SUBST(host_xm_defines)
3793 AC_SUBST(out_host_hook_obj)
3795 AC_SUBST(lang_opt_files)
3796 AC_SUBST(lang_specs_files)
3797 AC_SUBST(lang_tree_files)
3798 AC_SUBST(local_prefix)
3800 AC_SUBST(objc_boehm_gc)
3802 AC_SUBST(out_object_file)
3803 AC_SUBST(thread_file)
3804 AC_SUBST(tm_file_list)
3805 AC_SUBST(tm_include_list)
3806 AC_SUBST(tm_defines)
3807 AC_SUBST(tm_p_file_list)
3808 AC_SUBST(tm_p_include_list)
3809 AC_SUBST(xm_file_list)
3810 AC_SUBST(xm_include_list)
3811 AC_SUBST(xm_defines)
3812 AC_SUBST(c_target_objs)
3813 AC_SUBST(cxx_target_objs)
3814 AC_SUBST(fortran_target_objs)
3815 AC_SUBST(target_cpu_default)
3817 AC_SUBST_FILE(language_hooks)
3820 if test x${build} = x${host} ; then
3821 if test x${host} = x${target} ; then
3822 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3824 echo "Links are now set up to build a cross-compiler" 1>&2
3825 echo " from ${host} to ${target}." 1>&2
3828 if test x${host} = x${target} ; then
3829 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3830 echo " for ${target}." 1>&2
3832 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3833 echo " from ${host} to ${target}." 1>&2
3837 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3838 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3840 # Configure the subdirectories
3841 # AC_CONFIG_SUBDIRS($subdirs)
3843 # Create the Makefile
3844 # and configure language subdirectories
3845 AC_CONFIG_FILES($all_outputs)
3847 AC_CONFIG_COMMANDS([default],
3849 case ${CONFIG_HEADERS} in
3850 *auto-host.h:config.in*)
3853 # Make sure all the subdirs exist.
3854 for d in $subdirs doc build
3856 test -d $d || mkdir $d
3859 [subdirs='$subdirs'])