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 $CC warning features (if it's GCC).
319 # We want to use -pedantic, but we don't want warnings about
323 # So, we only use -pedantic if we can disable those warnings.
325 ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings -Wstrict-prototypes \
326 -Wmissing-prototypes], [loose_warn])
327 ACX_PROG_CC_WARNING_OPTS([-Wc++-compat], [cxx_compat_warn])
328 ACX_PROG_CC_WARNING_OPTS([-Wold-style-definition \
329 -Wmissing-format-attribute], [strict_warn])
330 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long -Wno-variadic-macros \
331 -Wno-overlength-strings], [strict_warn])
332 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
334 # The above macros do nothing if the compiler is not GCC. However, the
335 # Makefile has more goo to add other flags, so this variabl is used to
336 # enables warnings only for GCC.
338 if test "x$GCC" = "xyes"; then
339 warn_cflags='$(GCC_WARN_CFLAGS)'
341 AC_SUBST(warn_cflags)
343 # Enable expensive internal checks
345 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
349 AC_ARG_ENABLE(checking,
350 [ --enable-checking[=LIST]
351 enable expensive run-time checks. With LIST,
352 enable only specific categories of checks.
353 Categories are: yes,no,all,none,release.
354 Flags are: assert,df,fold,gc,gcac,misc,
355 rtlflag,rtl,runtime,tree,valgrind,types.],
356 [ac_checking_flags="${enableval}"],[
357 # Determine the default checks.
358 if test x$is_release = x ; then
359 ac_checking_flags=yes
361 ac_checking_flags=release
363 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
364 for check in release $ac_checking_flags
367 # these set all the flags to specific states
368 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
369 ac_fold_checking= ; ac_gc_checking=1 ;
370 ac_gc_always_collect= ; ac_rtl_checking= ;
371 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
372 ac_tree_checking=1 ; ac_valgrind_checking= ;
373 ac_types_checking=1 ;;
374 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
375 ac_fold_checking= ; ac_gc_checking= ;
376 ac_gc_always_collect= ; ac_rtl_checking= ;
377 ac_rtlflag_checking= ; ac_runtime_checking= ;
378 ac_tree_checking= ; ac_valgrind_checking= ;
379 ac_types_checking= ;;
380 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
381 ac_fold_checking=1 ; ac_gc_checking=1 ;
382 ac_gc_always_collect=1 ; ac_rtl_checking=1 ;
383 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
384 ac_tree_checking=1 ; ac_valgrind_checking= ;
385 ac_types_checking=1 ;;
386 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
387 ac_fold_checking= ; ac_gc_checking= ;
388 ac_gc_always_collect= ; ac_rtl_checking= ;
389 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
390 ac_tree_checking= ; ac_valgrind_checking= ;
391 ac_types_checking= ;;
392 # these enable particular checks
393 assert) ac_assert_checking=1 ;;
394 df) ac_df_checking=1 ;;
395 fold) ac_fold_checking=1 ;;
396 gc) ac_gc_checking=1 ;;
397 gcac) ac_gc_always_collect=1 ;;
398 misc) ac_checking=1 ;;
399 rtl) ac_rtl_checking=1 ;;
400 rtlflag) ac_rtlflag_checking=1 ;;
401 runtime) ac_runtime_checking=1 ;;
402 tree) ac_tree_checking=1 ;;
403 types) ac_types_checking=1 ;;
404 valgrind) ac_valgrind_checking=1 ;;
405 *) AC_MSG_ERROR(unknown check category $check) ;;
411 if test x$ac_checking != x ; then
412 AC_DEFINE(ENABLE_CHECKING, 1,
413 [Define if you want more run-time sanity checks. This one gets a grab
414 bag of miscellaneous but relatively cheap checks.])
415 nocommon_flag=-fno-common
417 AC_SUBST(nocommon_flag)
418 if test x$ac_df_checking != x ; then
419 AC_DEFINE(ENABLE_DF_CHECKING, 1,
420 [Define if you want more run-time sanity checks for dataflow.])
422 if test x$ac_assert_checking != x ; then
423 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
424 [Define if you want assertions enabled. This is a cheap check.])
426 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
427 if test x$ac_runtime_checking != x ; then
428 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
429 [Define if you want runtime assertions enabled. This is a cheap check.])
431 if test x$ac_tree_checking != x ; then
432 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
433 [Define if you want all operations on trees (the basic data
434 structure of the front ends) to be checked for dynamic type safety
435 at runtime. This is moderately expensive. The tree browser debugging
436 routines will also be enabled by this option.
438 TREEBROWSER=tree-browser.o
440 if test x$ac_types_checking != x ; then
441 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
442 [Define if you want all gimple types to be verified after gimplifiation.
446 AC_SUBST(TREEBROWSER)
447 if test x$ac_rtl_checking != x ; then
448 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
449 [Define if you want all operations on RTL (the basic data structure
450 of the optimizer and back end) to be checked for dynamic type safety
451 at runtime. This is quite expensive.])
453 if test x$ac_rtlflag_checking != x ; then
454 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
455 [Define if you want RTL flag accesses to be checked against the RTL
456 codes that are supported for each access macro. This is relatively
459 if test x$ac_gc_checking != x ; then
460 AC_DEFINE(ENABLE_GC_CHECKING, 1,
461 [Define if you want the garbage collector to do object poisoning and
462 other memory allocation checks. This is quite expensive.])
464 if test x$ac_gc_always_collect != x ; then
465 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
466 [Define if you want the garbage collector to operate in maximally
467 paranoid mode, validating the entire heap and collecting garbage at
468 every opportunity. This is extremely expensive.])
470 if test x$ac_fold_checking != x ; then
471 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
472 [Define if you want fold checked that it never destructs its argument.
473 This is quite expensive.])
475 valgrind_path_defines=
478 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
479 dnl # an if statement. This was the source of very frustrating bugs
480 dnl # in converting to autoconf 2.5x!
481 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
483 if test x$ac_valgrind_checking != x ; then
484 # It is certainly possible that there's valgrind but no valgrind.h.
485 # GCC relies on making annotations so we must have both.
486 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
487 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
488 [[#include <valgrind/memcheck.h>
489 #ifndef VALGRIND_DISCARD
490 #error VALGRIND_DISCARD not defined
492 [gcc_cv_header_valgrind_memcheck_h=yes],
493 [gcc_cv_header_valgrind_memcheck_h=no])
494 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
495 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
496 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
497 [[#include <memcheck.h>
498 #ifndef VALGRIND_DISCARD
499 #error VALGRIND_DISCARD not defined
501 [gcc_cv_header_memcheck_h=yes],
502 [gcc_cv_header_memcheck_h=no])
503 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
504 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
505 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
506 if test "x$valgrind_path" = "x" \
507 || (test $have_valgrind_h = no \
508 && test $gcc_cv_header_memcheck_h = no \
509 && test $gcc_cv_header_valgrind_memcheck_h = no); then
510 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
512 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
513 valgrind_command="$valgrind_path -q"
514 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
515 [Define if you want to run subprograms and generated programs
516 through valgrind (a memory checker). This is extremely expensive.])
517 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
518 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
519 [Define if valgrind's valgrind/memcheck.h header is installed.])
521 if test $gcc_cv_header_memcheck_h = yes; then
522 AC_DEFINE(HAVE_MEMCHECK_H, 1,
523 [Define if valgrind's memcheck.h header is installed.])
526 AC_SUBST(valgrind_path_defines)
527 AC_SUBST(valgrind_command)
529 # Enable code coverage collection
530 AC_ARG_ENABLE(coverage,
531 [ --enable-coverage[=LEVEL]
532 enable compiler's code coverage collection.
533 Use to measure compiler performance and locate
534 unused parts of the compiler. With LEVEL, specify
535 optimization. Values are opt, noopt,
537 [case "${enableval}" in
539 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
542 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
545 # a.k.a. --disable-coverage
549 AC_MSG_ERROR(unknown coverage setting $enableval)
553 AC_SUBST(coverage_flags)
555 AC_ARG_ENABLE(gather-detailed-mem-stats,
556 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
557 [enable_gather_detailed_mem_stats=no])
558 if test x$enable_gather_detailed_mem_stats = xyes ; then
559 AC_DEFINE(GATHER_STATISTICS, 1,
560 [Define to enable detailed memory allocation stats gathering.])
563 # -------------------------------
564 # Miscenalleous configure options
565 # -------------------------------
569 [ --with-stabs arrange to use stabs instead of host debug format],
573 # Determine whether or not multilibs are enabled.
574 AC_ARG_ENABLE(multilib,
575 [ --enable-multilib enable library support for multiple ABIs],
576 [], [enable_multilib=yes])
577 AC_SUBST(enable_multilib)
579 # Enable __cxa_atexit for C++.
580 AC_ARG_ENABLE(__cxa_atexit,
581 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
584 # Enable C extension for decimal float if target supports it.
585 AC_ARG_ENABLE(decimal-float,
586 [ --enable-decimal-float={no,yes,bid,dpd}
587 enable decimal float extension to C. Selecting 'bid'
588 or 'dpd' choses which decimal floating point format
591 case $enable_decimal_float in
592 yes | no | bid | dpd) ;;
593 *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
594 Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
599 powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
600 enable_decimal_float=yes
603 AC_MSG_WARN(decimal float is not supported for this target, ignored)
604 enable_decimal_float=no
609 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
610 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
611 [Define to 1 to enable decimal float extension to C.])
613 # x86's use BID format instead of DPD
614 case x$enable_decimal_float in
617 i?86*-*-linux* | x86_64*-*-linux*)
618 enable_decimal_float=bid
621 enable_decimal_float=dpd
626 # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
627 # dependency on libdecnumber.
628 enable_decimal_float=dpd
631 AC_SUBST(enable_decimal_float)
633 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
634 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
635 [Define to 1 to specify that we are using the BID decimal floating
636 point format instead of DPD])
638 # Enable C extension for fixed-point arithmetic.
639 AC_ARG_ENABLE(fixed-point,
640 [ --enable-fixed-point enable fixed-point arithmetic extension to C],
648 AC_MSG_WARN(fixed-point is not supported on IRIX, ignored)
649 enable_fixed_point=no
652 enable_fixed_point=yes
657 AC_MSG_WARN(fixed-point is not supported for this target, ignored)
658 enable_fixed_point=no
662 AC_SUBST(enable_fixed_point)
664 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
665 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
666 [Define to 1 to enable fixed-point arithmetic extension to C.])
669 # Pass with no value to take the default
670 # Pass with a value to specify a thread package
671 AC_ARG_ENABLE(threads,
672 [ --enable-threads enable thread usage for target GCC
673 --enable-threads=LIB use LIB thread package for target GCC],,
677 [ --enable-tls enable or disable generation of tls code
678 overriding the assembler check for tls support],
682 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
683 Valid choices are 'yes' and 'no'.]) ;;
687 AC_ARG_ENABLE(objc-gc,
688 [ --enable-objc-gc enable the use of Boehm's garbage collector with
689 the GNU Objective-C runtime],
690 if test x$enable_objc_gc = xno; then
698 [ --with-dwarf2 force the default debug format to be DWARF 2],
699 dwarf2="$with_dwarf2",
702 AC_ARG_ENABLE(shared,
703 [ --disable-shared don't provide a shared libgcc],
705 case $enable_shared in
709 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
710 for pkg in $enableval; do
711 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
718 ], [enable_shared=yes])
719 AC_SUBST(enable_shared)
721 AC_ARG_WITH(build-sysroot,
722 [ --with-build-sysroot=sysroot
723 use sysroot as the system root during the build])
726 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
728 case ${with_sysroot} in
729 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
730 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
733 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
734 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
736 if test "x$prefix" = xNONE; then
737 test_prefix=/usr/local
741 if test "x$exec_prefix" = xNONE; then
742 test_exec_prefix=$test_prefix
744 test_exec_prefix=$exec_prefix
746 case ${TARGET_SYSTEM_ROOT} in
747 "${test_prefix}"|"${test_prefix}/"*|\
748 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
749 '${prefix}'|'${prefix}/'*|\
750 '${exec_prefix}'|'${exec_prefix}/'*)
751 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
752 TARGET_SYSTEM_ROOT_DEFINE="$t"
757 TARGET_SYSTEM_ROOT_DEFINE=
758 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
760 AC_SUBST(TARGET_SYSTEM_ROOT)
761 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
762 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
764 # Build with intermodule optimisations
765 AC_ARG_ENABLE(intermodule,
766 [ --enable-intermodule build the compiler in one step],
767 [case ${enable_intermodule} in
768 yes) onestep="-onestep";;
774 ACX_PKGVERSION([GCC])
775 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
777 # Sanity check enable_languages in case someone does not run the toplevel
778 # configure # script.
779 AC_ARG_ENABLE(languages,
780 [ --enable-languages=LIST specify which front-ends to build],
781 [case ,${enable_languages}, in
783 # go safe -- we cannot be much sure without the toplevel
785 # analysis of which target libs are present and usable
789 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
794 enable_languages=c,${enable_languages}
797 [enable_languages=c])
799 # Used by documentation targets
800 AC_SUBST(datarootdir)
804 # -------------------------
805 # Checks for other programs
806 # -------------------------
810 # Find some useful tools
812 # We need awk to create options.c and options.h.
813 # Bail out if it's missing.
815 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
823 # By default, the Darwin ranlib will not treat common symbols as
824 # definitions when building the archive table of contents. Other
825 # ranlibs do that; pass an option to the Darwin ranlib that makes
826 # it behave similarly.
832 AC_SUBST(ranlib_flags)
836 # See if cmp has --ignore-initial.
837 gcc_AC_PROG_CMP_IGNORE_INITIAL
839 # See if we have the mktemp command.
840 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
842 # See if makeinfo has been installed and is modern enough
843 # that we can use it.
844 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
845 [GNU texinfo.* \([0-9][0-9.]*\)],
846 [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
847 if test $gcc_cv_prog_makeinfo_modern = no; then
849 *** Makeinfo is missing or too old.
850 *** Info documentation will not be built.])
857 # Is pod2man recent enough to regenerate manpages?
858 AC_MSG_CHECKING([for recent Pod::Man])
859 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
861 GENERATED_MANPAGES=generated-manpages
866 AC_SUBST(GENERATED_MANPAGES)
868 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
871 dnl Don't use AC_PROG_LEX; we insist on flex.
872 dnl LEXLIB is not useful in gcc.
873 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
876 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
878 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
879 # check for build == host before using them.
882 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
883 && test -d ../binutils ; then
884 NM='$(objdir)/../binutils/nm-new'
886 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
890 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
891 && test -d ../binutils ; then
892 AR='$(objdir)/../binutils/ar'
894 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
898 # --------------------
899 # Checks for C headers
900 # --------------------
902 # Need to reject headers which give warnings, so that the -Werror bootstrap
903 # works later. *sigh* This needs to come before all header checks.
910 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
911 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
912 sys/resource.h sys/param.h sys/times.h sys/stat.h \
913 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
915 # Check for thread headers.
916 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
917 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
919 # These tests can't be done till we know if we have limits.h.
928 # These libraries may be used by collect2.
929 # We may need a special search path to get them linked.
930 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
932 for libs in '' -lld -lmld \
933 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
934 '-L/usr/lib/cmplrs/cc3.11 -lmld'
937 AC_TRY_LINK_FUNC(ldopen,
938 [gcc_cv_collect2_libs="$libs"; break])
941 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
942 case $gcc_cv_collect2_libs in
944 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
946 AC_SUBST(COLLECT2_LIBS)
948 # When building Ada code on Alpha, we need exc_resume which is usually in
949 # -lexc. So test for it.
952 AC_SEARCH_LIBS(exc_resume, exc)
955 AC_SUBST(GNAT_LIBEXC)
957 # Some systems put ldexp and frexp in libm instead of libc; assume
958 # they're both in the same place. jcf-dump needs them.
961 AC_SEARCH_LIBS(ldexp, m)
966 # Use <inttypes.h> only if it exists,
967 # doesn't clash with <sys/types.h>, and declares intmax_t.
968 AC_MSG_CHECKING(for inttypes.h)
969 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
970 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
971 [[#include <sys/types.h>
972 #include <inttypes.h>]],
973 [[intmax_t i = -1;]])],
974 [gcc_cv_header_inttypes_h=yes],
975 [gcc_cv_header_inttypes_h=no])])
976 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
977 if test $gcc_cv_header_inttypes_h = yes; then
978 AC_DEFINE(HAVE_INTTYPES_H, 1,
979 [Define if you have a working <inttypes.h> header file.])
982 dnl Disabled until we have a complete test for buggy enum bitfields.
983 dnl gcc_AC_C_ENUM_BF_UNSIGNED
985 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
986 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
987 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
988 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
989 putchar_unlocked putc_unlocked)
990 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
991 sysconf strsignal getrusage nl_langinfo scandir alphasort \
992 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
995 if test x$ac_cv_func_mbstowcs = xyes; then
996 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
997 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1003 [gcc_cv_func_mbstowcs_works=yes],
1004 [gcc_cv_func_mbstowcs_works=no],
1005 [gcc_cv_func_mbstowcs_works=yes])])
1006 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1007 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1008 [Define this macro if mbstowcs does not crash when its
1009 first argument is NULL.])
1013 AC_CHECK_TYPE(ssize_t, int)
1015 # Try to determine the array type of the second argument of getgroups
1016 # for the target system (int or gid_t).
1018 if test "${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 $thread_file != single; then
1371 rm -f gthr-default.h
1372 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1373 gthread_flags=-DHAVE_GTHR_DEFAULT
1375 AC_SUBST(gthread_flags)
1382 if test x$enable___cxa_atexit = xyes || \
1383 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1384 if test x$host = x$target; then
1386 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1387 # keyed to flag_use_cxa_atexit
1392 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1393 [echo "__cxa_atexit can't be enabled on this target"])
1397 # We can't check for __cxa_atexit when building a cross, so assume
1401 if test x$use_cxa_atexit = xyes; then
1402 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1403 [Define if you want to use __cxa_atexit, rather than atexit, to
1404 register C++ destructors for local statics and global objects.
1405 This is essential for fully standards-compliant handling of
1406 destructors, but requires __cxa_atexit in libc.])
1411 if test x$with_system_libunwind = xyes; then
1412 if test x$host = x$target; then
1413 AC_SEARCH_LIBS(_Unwind_GetIPInfo, unwind,, [use_getipinfo=no])
1416 GCC_TARGET_TEMPLATE(HAVE_GETIPINFO)
1417 if test x$use_getipinfo = xyes; then
1418 AC_DEFINE(HAVE_GETIPINFO, 1,
1419 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1421 echo "The system unwind library does not support _Unwind_GetIPInfo."
1424 # Look for a file containing extra machine modes.
1425 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1426 extra_modes_file='$(srcdir)'/config/${extra_modes}
1427 AC_SUBST(extra_modes_file)
1428 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1429 [Define to the name of a file containing a list of extra machine modes
1430 for this architecture.])
1433 # Convert extra_options into a form suitable for Makefile use.
1435 for f in $extra_options; do
1436 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1438 AC_SUBST(extra_opt_files)
1440 # auto-host.h is the file containing items generated by autoconf and is
1441 # the first file included by config.h.
1442 # If host=build, it is correct to have bconfig include auto-host.h
1443 # as well. If host!=build, we are in error and need to do more
1444 # work to find out the build config parameters.
1445 if test x$host = x$build
1447 build_auto=auto-host.h
1449 # We create a subdir, then run autoconf in the subdir.
1450 # To prevent recursion we set host and build for the new
1451 # invocation of configure to the build for this invocation
1458 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1459 *) realsrcdir=../${srcdir};;
1461 saved_CFLAGS="${CFLAGS}"
1462 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1463 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1464 ${realsrcdir}/configure \
1465 --enable-languages=${enable_languages-all} \
1466 --target=$target_alias --host=$build_alias --build=$build_alias
1467 CFLAGS="${saved_CFLAGS}"
1469 # We just finished tests for the build machine, so rename
1470 # the file auto-build.h in the gcc directory.
1471 mv auto-host.h ../auto-build.h
1474 build_auto=auto-build.h
1476 AC_SUBST(build_subdir)
1478 tm_file="${tm_file} defaults.h"
1479 tm_p_file="${tm_p_file} tm-preds.h"
1480 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1481 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1482 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1483 # put this back in temporarily.
1484 xm_file="auto-host.h ansidecl.h ${xm_file}"
1491 # Compile in configure arguments.
1492 if test -f configargs.h ; then
1493 # Being re-configured.
1494 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1495 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1497 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1500 # Double all backslashes and backslash all quotes to turn
1501 # gcc_config_arguments into a C string.
1502 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1503 $gcc_config_arguments
1505 gcc_config_arguments_str=`cat conftest.out`
1508 cat > configargs.h <<EOF
1509 /* Generated automatically. */
1510 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1511 static const char thread_model[] = "$thread_file";
1513 static const struct {
1514 const char *name, *value;
1515 } configure_default_options[] = $configure_default_options;
1519 # Internationalization
1520 ZW_GNU_GETTEXT_SISTER_DIR
1522 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1523 # -liconv on the link line twice.
1524 case "$LIBINTL" in *$LIBICONV*)
1528 AC_ARG_ENABLE(secureplt,
1529 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1533 [ --enable-cld enable -mcld by default for 32bit x86], [],
1536 # Windows32 Registry support for specifying GCC installation paths.
1537 AC_ARG_ENABLE(win32-registry,
1538 [ --disable-win32-registry
1539 disable lookup of installation paths in the
1540 Registry on Windows hosts
1541 --enable-win32-registry enable registry lookup (default)
1542 --enable-win32-registry=KEY
1543 use KEY instead of GCC version as the last portion
1544 of the registry key],,)
1547 win32 | pe | cygwin* | mingw32* | uwin*)
1548 if test "x$enable_win32_registry" != xno; then
1549 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1552 if test "x$enable_win32_registry" != xno; then
1553 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1554 [Define to 1 if installation paths should be looked up in the Windows
1555 Registry. Ignored on non-Windows hosts.])
1557 if test "x$enable_win32_registry" != xyes \
1558 && test "x$enable_win32_registry" != x; then
1559 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1560 [Define to be the last component of the Windows registry key under which
1561 to look for installation paths. The full key used will be
1562 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1563 The default is the GCC version number.])
1569 # Get an absolute path to the GCC top-level source directory
1570 holddir=`${PWDCMD-pwd}`
1572 topdir=`${PWDCMD-pwd}`
1575 # Conditionalize the makefile for this host machine.
1577 for f in ${host_xmake_file}
1579 if test -f ${srcdir}/config/$f
1581 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1585 # Conditionalize the makefile for this target machine.
1587 for f in ${tmake_file}
1589 if test -f ${srcdir}/config/$f
1591 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1594 tmake_file="${tmake_file_}"
1596 # This is a terrible hack which will go away some day.
1597 host_cc_for_libada=${CC}
1598 AC_SUBST(host_cc_for_libada)
1600 out_object_file=`basename $out_file .c`.o
1602 tm_file_list="options.h"
1603 tm_include_list="options.h"
1604 for f in $tm_file; do
1607 f=`echo $f | sed 's/^..//'`
1608 tm_file_list="${tm_file_list} $f"
1609 tm_include_list="${tm_include_list} $f"
1612 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1613 tm_include_list="${tm_include_list} $f"
1616 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1617 tm_include_list="${tm_include_list} config/$f"
1624 for f in $tm_p_file; do
1627 tm_p_file_list="${tm_p_file_list} $f"
1628 tm_p_include_list="${tm_p_include_list} $f"
1631 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1632 tm_p_include_list="${tm_p_include_list} config/$f"
1638 for f in $xm_file; do
1641 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1642 xm_include_list="${xm_include_list} $f"
1645 xm_file_list="${xm_file_list} $f"
1646 xm_include_list="${xm_include_list} $f"
1649 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1650 xm_include_list="${xm_include_list} config/$f"
1656 host_xm_include_list=
1657 for f in $host_xm_file; do
1660 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1661 host_xm_include_list="${host_xm_include_list} $f"
1664 host_xm_file_list="${host_xm_file_list} $f"
1665 host_xm_include_list="${host_xm_include_list} $f"
1668 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1669 host_xm_include_list="${host_xm_include_list} config/$f"
1675 for f in $build_xm_file; do
1678 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1679 build_xm_include_list="${build_xm_include_list} $f"
1681 auto-build.h | auto-host.h )
1682 build_xm_file_list="${build_xm_file_list} $f"
1683 build_xm_include_list="${build_xm_include_list} $f"
1686 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1687 build_xm_include_list="${build_xm_include_list} config/$f"
1692 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1693 # cross-compiler which does not use the native headers and libraries.
1694 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1695 CROSS= AC_SUBST(CROSS)
1696 ALL=all.internal AC_SUBST(ALL)
1697 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1699 if test "x$with_build_sysroot" != x; then
1700 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1702 # This value is used, even on a native system, because
1703 # CROSS_SYSTEM_HEADER_DIR is just
1704 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1705 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1708 if test x$host != x$target
1710 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1712 SYSTEM_HEADER_DIR=$build_system_header_dir
1713 case "$host","$target" in
1714 # Darwin crosses can use the host system's libraries and headers,
1715 # because of the fat library support. Of course, it must be the
1716 # same version of Darwin on both sides. Allow the user to
1717 # just say --target=foo-darwin without a version number to mean
1718 # "the version on this system".
1719 *-*-darwin*,*-*-darwin*)
1720 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1721 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1722 if test $hostos = $targetos -o $targetos = darwin ; then
1724 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1729 i?86-*-*,x86_64-*-* \
1730 | powerpc*-*-*,powerpc64*-*-*)
1731 CROSS="$CROSS -DNATIVE_CROSS" ;;
1733 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1734 SYSTEM_HEADER_DIR=$build_system_header_dir
1737 # If this is a cross-compiler that does not
1738 # have its own set of headers then define
1741 # If this is using newlib, without having the headers available now,
1742 # then define inhibit_libc in LIBGCC2_CFLAGS.
1743 # This prevents libgcc2 from containing any code which requires libc
1745 : ${inhibit_libc=false}
1746 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1747 test x$with_newlib = xyes ; } &&
1748 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1751 AC_SUBST(inhibit_libc)
1753 # When building gcc with a cross-compiler, we need to adjust things so
1754 # that the generator programs are still built with the native compiler.
1755 # Also, we cannot run fixincludes or fix-header.
1757 # These are the normal (build=host) settings:
1758 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1759 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1760 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1761 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1763 # Possibly disable fixproto, on a per-target basis.
1764 case ${use_fixproto} in
1769 STMP_FIXPROTO=stmp-fixproto
1772 AC_SUBST(STMP_FIXPROTO)
1774 # And these apply if build != host, or we are generating coverage data
1775 if test x$build != x$host || test "x$coverage_flags" != x
1777 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1778 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1780 if test "x$TARGET_SYSTEM_ROOT" = x; then
1781 if test "x$STMP_FIXPROTO" != x; then
1782 STMP_FIXPROTO=stmp-install-fixproto
1787 # Expand extra_headers to include complete path.
1788 # This substitutes for lots of t-* files.
1790 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1791 for file in ${extra_headers} ; do
1792 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1795 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1796 if test x"$use_gcc_tgmath" = xyes
1797 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1800 # Define collect2 in Makefile.
1801 case $host_can_use_collect2 in
1803 *) collect2='collect2$(exeext)' ;;
1805 AC_SUBST([collect2])
1807 # Add a definition of USE_COLLECT2 if system wants one.
1808 case $use_collect2 in
1809 no) use_collect2= ;;
1812 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1813 xm_defines="${xm_defines} USE_COLLECT2"
1814 case $host_can_use_collect2 in
1816 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1822 # ---------------------------
1823 # Assembler & linker features
1824 # ---------------------------
1826 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1827 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1828 # However when ld-new is first executed from the build tree, libtool will
1829 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1830 # to the build tree. While doing this we need to use the previous-stage
1831 # linker, or we have an infinite loop. The presence of a shell script as
1832 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1833 # the gcc/collect-ld script. So we need to know how libtool works, or
1834 # exec-tool will fail.
1836 m4_defun([_LT_CONFIG_COMMANDS], [])
1839 AC_SUBST(enable_fast_install)
1841 # Identify the assembler which will work hand-in-glove with the newly
1842 # built GCC, so that we can examine its features. This is the assembler
1843 # which will be driven by the driver program.
1845 # If build != host, and we aren't building gas in-tree, we identify a
1846 # build->target assembler and hope that it will have the same features
1847 # as the host->target assembler we'll be using.
1848 gcc_cv_gas_major_version=
1849 gcc_cv_gas_minor_version=
1850 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1852 m4_pattern_allow([AS_FOR_TARGET])dnl
1853 AS_VAR_SET_IF(gcc_cv_as,, [
1854 if test -x "$DEFAULT_ASSEMBLER"; then
1855 gcc_cv_as="$DEFAULT_ASSEMBLER"
1856 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1857 && test -f ../gas/Makefile \
1858 && test x$build = x$host; then
1859 gcc_cv_as=../gas/as-new$build_exeext
1860 elif test -x as$build_exeext; then
1861 # Build using assembler in the current directory.
1862 gcc_cv_as=./as$build_exeext
1863 elif test -x $AS_FOR_TARGET; then
1864 gcc_cv_as="$AS_FOR_TARGET"
1866 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1869 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1870 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1871 case "$ORIGINAL_AS_FOR_TARGET" in
1872 ./as | ./as$build_exeext) ;;
1873 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1876 AC_MSG_CHECKING(what assembler to use)
1877 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1878 # Single tree build which includes gas. We want to prefer it
1879 # over whatever linker top-level may have detected, since
1880 # we'll use what we're building after installation anyway.
1881 AC_MSG_RESULT(newly built gas)
1883 _gcc_COMPUTE_GAS_VERSION
1884 in_tree_gas_is_elf=no
1885 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1886 || (grep 'obj_format = multi' ../gas/Makefile \
1887 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1889 in_tree_gas_is_elf=yes
1892 AC_MSG_RESULT($gcc_cv_as)
1896 # Identify the linker which will work hand-in-glove with the newly
1897 # built GCC, so that we can examine its features. This is the linker
1898 # which will be driven by the driver program.
1900 # If build != host, and we aren't building gas in-tree, we identify a
1901 # build->target linker and hope that it will have the same features
1902 # as the host->target linker we'll be using.
1903 gcc_cv_gld_major_version=
1904 gcc_cv_gld_minor_version=
1905 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1906 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1908 AS_VAR_SET_IF(gcc_cv_ld,, [
1909 if test -x "$DEFAULT_LINKER"; then
1910 gcc_cv_ld="$DEFAULT_LINKER"
1911 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1912 && test -f ../ld/Makefile \
1913 && test x$build = x$host; then
1914 gcc_cv_ld=../ld/ld-new$build_exeext
1915 elif test -x collect-ld$build_exeext; then
1916 # Build using linker in the current directory.
1917 gcc_cv_ld=./collect-ld$build_exeext
1918 elif test -x $LD_FOR_TARGET; then
1919 gcc_cv_ld="$LD_FOR_TARGET"
1921 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1924 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1925 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1926 case "$ORIGINAL_LD_FOR_TARGET" in
1927 ./collect-ld | ./collect-ld$build_exeext) ;;
1928 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1931 AC_MSG_CHECKING(what linker to use)
1932 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1933 # Single tree build which includes ld. We want to prefer it
1934 # over whatever linker top-level may have detected, since
1935 # we'll use what we're building after installation anyway.
1936 AC_MSG_RESULT(newly built ld)
1938 in_tree_ld_is_elf=no
1939 if (grep 'EMUL = .*elf' ../ld/Makefile \
1940 || grep 'EMUL = .*linux' ../ld/Makefile \
1941 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1942 in_tree_ld_is_elf=yes
1944 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
1947 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1948 if test x$gcc_cv_gld_version != x; then
1952 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1953 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1956 AC_MSG_RESULT($gcc_cv_ld)
1960 # Figure out what nm we will be using.
1961 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1962 AS_VAR_SET_IF(gcc_cv_nm,, [
1963 if test -f $gcc_cv_binutils_srcdir/configure.in \
1964 && test -f ../binutils/Makefile \
1965 && test x$build = x$host; then
1966 gcc_cv_nm=../binutils/nm-new$build_exeext
1967 elif test -x nm$build_exeext; then
1968 gcc_cv_nm=./nm$build_exeext
1969 elif test -x $NM_FOR_TARGET; then
1970 gcc_cv_nm="$NM_FOR_TARGET"
1972 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1975 AC_MSG_CHECKING(what nm to use)
1976 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1977 # Single tree build which includes binutils.
1978 AC_MSG_RESULT(newly built nm)
1981 AC_MSG_RESULT($gcc_cv_nm)
1985 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1986 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1987 case "$ORIGINAL_NM_FOR_TARGET" in
1988 ./nm | ./nm$build_exeext) ;;
1989 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
1993 # Figure out what objdump we will be using.
1994 AS_VAR_SET_IF(gcc_cv_objdump,, [
1995 if test -f $gcc_cv_binutils_srcdir/configure.in \
1996 && test -f ../binutils/Makefile \
1997 && test x$build = x$host; then
1998 # Single tree build which includes binutils.
1999 gcc_cv_objdump=../binutils/objdump$build_exeext
2000 elif test -x objdump$build_exeext; then
2001 gcc_cv_objdump=./objdump$build_exeext
2002 elif test -x $OBJDUMP_FOR_TARGET; then
2003 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2005 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2008 AC_MSG_CHECKING(what objdump to use)
2009 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2010 # Single tree build which includes binutils.
2011 AC_MSG_RESULT(newly built objdump)
2012 elif test x$gcc_cv_objdump = x; then
2013 AC_MSG_RESULT(not found)
2015 AC_MSG_RESULT($gcc_cv_objdump)
2018 # Figure out what assembler alignment features are present.
2019 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2023 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2024 [Define if your assembler supports .balign and .p2align.])])
2026 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2029 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2030 [Define if your assembler supports specifying the maximum number
2031 of bytes to skip when using the GAS .p2align command.])])
2033 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2036 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2037 [Define if your assembler supports .literal16.])])
2039 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2041 [conftest_label1: .word 0
2043 conftest_label2: .word 0
2045 [if test x$gcc_cv_nm != x; then
2046 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2047 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2048 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2050 else gcc_cv_as_subsection_m1=yes
2052 rm -f conftest.nm1 conftest.nm2
2054 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2055 [Define if your assembler supports .subsection and .subsection -1 starts
2056 emitting at the beginning of your section.])])
2058 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2061 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2063 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2065 [ .weakref foobar, barfnot],,
2066 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2068 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2071 .NSUBSPA $CODE$,COMDAT],,
2072 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2074 # .hidden needs to be supported in both the assembler and the linker,
2075 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2076 # This is irritatingly difficult to feature test for; we have to check the
2077 # date string after the version number. If we've got an in-tree
2078 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2080 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2081 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2086 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2087 [if test $in_tree_ld = yes ; then
2089 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2090 && test $in_tree_ld_is_elf = yes; then
2091 gcc_cv_ld_hidden=yes
2094 gcc_cv_ld_hidden=yes
2095 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2096 if echo "$ld_ver" | grep GNU > /dev/null; then
2098 ld_vers=`echo $ld_ver | sed -n \
2099 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2100 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2101 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2102 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2103 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2104 if test 0"$ld_date" -lt 20020404; then
2105 if test -n "$ld_date"; then
2106 # If there was date string, but was earlier than 2002-04-04, fail
2108 elif test -z "$ld_vers"; then
2109 # If there was no date string nor ld version number, something is wrong
2112 test -z "$ld_vers_patch" && ld_vers_patch=0
2113 if test "$ld_vers_major" -lt 2; then
2115 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2116 gcc_cv_ld_hidden="no"
2117 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2125 hppa64*-*-hpux* | ia64*-*-hpux*)
2126 gcc_cv_ld_hidden=yes
2134 libgcc_visibility=no
2135 AC_SUBST(libgcc_visibility)
2136 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2137 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2138 libgcc_visibility=yes
2139 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2140 [Define if your assembler and linker support .hidden.])
2143 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2144 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2152 [# GAS versions before 2.11 do not support uleb128,
2153 # despite appearing to.
2154 # ??? There exists an elf-specific test that will crash
2155 # the assembler. Perhaps it's better to figure out whether
2156 # arbitrary sections are supported and try the test.
2157 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2158 if echo "$as_ver" | grep GNU > /dev/null; then
2160 as_vers=`echo $as_ver | sed -n \
2161 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2162 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2163 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2165 if test $as_major -eq 2 && test $as_minor -lt 11
2167 else gcc_cv_as_leb128=yes
2170 [AC_DEFINE(HAVE_AS_LEB128, 1,
2171 [Define if your assembler supports .sleb128 and .uleb128.])])
2173 # GAS versions up to and including 2.11.0 may mis-optimize
2175 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2183 .section .eh_frame,"aw",@progbits
2185 .4byte .LECIE1-.LSCIE1
2199 .4byte .LEFDE1-.LASFDE1
2201 .4byte .LASFDE1-__FRAME_BEGIN__
2209 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2210 cat > conftest.lit <<EOF
2211 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2212 0010 01000000 12000000 18000000 00000000 ................
2213 0020 08000000 04080000 0044 .........D @&t@
2215 cat > conftest.big <<EOF
2216 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2217 0010 00000001 00000012 00000018 00000000 ................
2218 0020 00000008 04000000 0844 .........D @&t@
2220 # If the assembler didn't choke, and we can objdump,
2221 # and we got the correct data, then succeed.
2222 # The text in the here-document typically retains its unix-style line
2223 # endings, while the output of objdump will use host line endings.
2224 # Therefore, use diff -b for the comparisons.
2225 if test x$gcc_cv_objdump != x \
2226 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2227 | tail -3 > conftest.got \
2228 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2229 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2231 gcc_cv_as_eh_frame=yes
2232 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2233 gcc_cv_as_eh_frame=buggy
2235 # Uh oh, what do we do now?
2236 gcc_cv_as_eh_frame=no
2239 if test $gcc_cv_as_eh_frame = buggy; then
2240 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2241 [Define if your assembler mis-optimizes .eh_frame data.])
2244 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2245 [elf,2,12,0], [--fatal-warnings],
2246 [.section .rodata.str, "aMS", @progbits, 1])
2247 if test $gcc_cv_as_shf_merge = no; then
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])
2252 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2253 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2254 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2256 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2257 [elf,2,16,0], [--fatal-warnings],
2258 [.section .text,"axG",@progbits,.foo,comdat])
2259 if test $gcc_cv_as_comdat_group = yes; then
2260 gcc_cv_as_comdat_group_percent=no
2262 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2263 [elf,2,16,0], [--fatal-warnings],
2264 [.section .text,"axG",%progbits,.foo,comdat])
2266 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2268 if test 0"$ld_date" -lt 20050308; then
2269 if test -n "$ld_date"; then
2270 # If there was date string, but was earlier than 2005-03-08, fail
2272 elif test "$ld_vers_major" -lt 2; then
2274 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2279 # assume linkers other than GNU ld don't support COMDAT group
2282 if test $comdat_group = no; then
2283 gcc_cv_as_comdat_group=no
2284 gcc_cv_as_comdat_group_percent=no
2286 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2287 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2288 [Define 0/1 if your assembler and linker support COMDAT groups.])
2290 # Thread-local storage - the check is heavily parametrized.
2299 .section ".tdata","awT",@progbits
2302 ldq $27,__tls_get_addr($29) !literal!1
2303 lda $16,foo($29) !tlsgd!1
2304 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2305 ldq $27,__tls_get_addr($29) !literal!2
2306 lda $16,foo($29) !tlsldm!2
2307 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2308 ldq $1,foo($29) !gotdtprel
2309 ldah $2,foo($29) !dtprelhi
2310 lda $3,foo($2) !dtprello
2311 lda $4,foo($29) !dtprel
2312 ldq $1,foo($29) !gottprel
2313 ldah $2,foo($29) !tprelhi
2314 lda $3,foo($2) !tprello
2315 lda $4,foo($29) !tprel'
2318 tls_as_opt=--fatal-warnings
2322 .section ".tdata","awT",@progbits
2334 .section ".tdata","awT",@progbits
2338 addil LT%foo-$tls_gdidx$,gp
2339 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2342 addil LT%foo-$tls_ldidx$,gp
2344 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2345 addil LR%foo-$tls_dtpoff$,%ret0
2346 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2348 addil LT%foo-$tls_ieoff$,gp
2349 ldw RT%foo-$tls_ieoff$(%r1),%t2
2352 addil LR%foo-$tls_leoff$,%t1
2353 ldo RR%foo-$tls_leoff$(%r1),%t2'
2356 tls_as_opt=--fatal-warnings
2360 .section ".tdata","awT",%progbits
2373 .section ".tdata","awT",@progbits
2377 leal foo@TLSGD(,%ebx,1), %eax
2378 leal foo@TLSLDM(%ebx), %eax
2379 leal foo@DTPOFF(%eax), %edx
2380 movl foo@GOTTPOFF(%ebx), %eax
2381 subl foo@GOTTPOFF(%ebx), %eax
2382 addl foo@GOTNTPOFF(%ebx), %eax
2383 movl foo@INDNTPOFF, %eax
2384 movl $foo@TPOFF, %eax
2385 subl $foo@TPOFF, %eax
2386 leal foo@NTPOFF(%ecx), %eax'
2389 tls_as_opt=--fatal-warnings
2393 .section ".tdata","awT",@progbits
2397 leaq foo@TLSGD(%rip), %rdi
2398 leaq foo@TLSLD(%rip), %rdi
2399 leaq foo@DTPOFF(%rax), %rdx
2400 movq foo@GOTTPOFF(%rip), %rax
2401 movq $foo@TPOFF, %rax'
2404 tls_as_opt=--fatal-warnings
2408 .section ".tdata","awT",@progbits
2411 addl r16 = @ltoff(@dtpmod(foo#)), gp
2412 addl r17 = @ltoff(@dtprel(foo#)), gp
2413 addl r18 = @ltoff(@tprel(foo#)), gp
2414 addl r19 = @dtprel(foo#), gp
2415 adds r21 = @dtprel(foo#), r13
2416 movl r23 = @dtprel(foo#)
2417 addl r20 = @tprel(foo#), gp
2418 adds r22 = @tprel(foo#), r13
2419 movl r24 = @tprel(foo#)'
2422 tls_as_opt=--fatal-warnings
2426 .section .tdata,"awT",@progbits
2430 addiu $4, $28, %tlsgd(x)
2431 addiu $4, $28, %tlsldm(x)
2432 lui $4, %dtprel_hi(x)
2433 addiu $4, $4, %dtprel_lo(x)
2434 lw $4, %gottprel(x)($28)
2435 lui $4, %tprel_hi(x)
2436 addiu $4, $4, %tprel_lo(x)'
2439 tls_as_opt='-32 --fatal-warnings'
2443 .section ".tdata","awT",@progbits
2451 addi 3,31,ld0@got@tlsgd
2453 addi 3,31,x1@got@tlsld
2456 addis 9,3,x2@dtprel@ha
2457 addi 9,9,x2@dtprel@l
2458 lwz 9,x3@got@tprel(31)
2461 addis 9,2,x2@tprel@ha
2462 addi 9,9,x2@tprel@l'
2465 tls_as_opt="-a32 --fatal-warnings"
2469 .section ".tdata","awT",@progbits
2477 addi 3,2,ld0@got@tlsgd
2483 addi 3,2,x1@got@tlsld
2489 addis 9,3,x2@dtprel@ha
2490 addi 9,9,x2@dtprel@l
2493 ld 9,x3@got@dtprel(2)
2499 tls_as_opt="-a64 --fatal-warnings"
2503 .section ".tdata","awT",@progbits
2512 l %r1,foo@GOTNTPOFF(%r12)
2513 l %r1,0(%r1):tls_load:foo
2514 bas %r14,0(%r1,%r13):tls_gdcall:foo
2515 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2518 tls_as_opt="-m31 --fatal-warnings"
2522 .section ".tdata","awT",@progbits
2530 lg %r1,foo@GOTNTPOFF(%r12)
2531 larl %r1,foo@INDNTPOFF
2532 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2533 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2536 tls_as_opt="-m64 -Aesame --fatal-warnings"
2538 sh-*-* | sh[34]-*-*)
2540 .section ".tdata","awT",@progbits
2550 tls_as_opt=--fatal-warnings
2554 sparc*-sun-solaris2.[56789]*)
2555 # TLS was introduced in the Solaris 9 4/04 release but
2556 # we do not enable it by default on Solaris 9 either.
2557 if test "x$enable_tls" = xyes ; then
2563 sparc*-sun-solaris2.*)
2570 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2572 .section ".tdata",#alloc,#write,#tls
2575 sethi %tgd_hi22(foo), %o0
2576 add %o0, %tgd_lo10(foo), %o1
2577 add %l7, %o1, %o0, %tgd_add(foo)
2578 call __tls_get_addr, %tgd_call(foo)
2579 sethi %tldm_hi22(foo), %l1
2580 add %l1, %tldm_lo10(foo), %l2
2581 add %l7, %l2, %o0, %tldm_add(foo)
2582 call __tls_get_addr, %tldm_call(foo)
2583 sethi %tldo_hix22(foo), %l3
2584 xor %l3, %tldo_lox10(foo), %l4
2585 add %o0, %l4, %l5, %tldo_add(foo)
2586 sethi %tie_hi22(foo), %o3
2587 add %o3, %tie_lo10(foo), %o3
2588 ld [%l7 + %o3], %o2, %tie_ld(foo)
2589 add %g7, %o2, %o4, %tie_add(foo)
2590 sethi %tle_hix22(foo), %l1
2591 xor %l1, %tle_lox10(foo), %o5
2592 ld [%g7 + %o5], %o1'
2597 .section ".tdata","awT",@progbits
2600 sethi %tgd_hi22(foo), %o0
2601 add %o0, %tgd_lo10(foo), %o1
2602 add %l7, %o1, %o0, %tgd_add(foo)
2603 call __tls_get_addr, %tgd_call(foo)
2604 sethi %tldm_hi22(foo), %l1
2605 add %l1, %tldm_lo10(foo), %l2
2606 add %l7, %l2, %o0, %tldm_add(foo)
2607 call __tls_get_addr, %tldm_call(foo)
2608 sethi %tldo_hix22(foo), %l3
2609 xor %l3, %tldo_lox10(foo), %l4
2610 add %o0, %l4, %l5, %tldo_add(foo)
2611 sethi %tie_hi22(foo), %o3
2612 add %o3, %tie_lo10(foo), %o3
2613 ld [%l7 + %o3], %o2, %tie_ld(foo)
2614 add %g7, %o2, %o4, %tie_add(foo)
2615 sethi %tle_hix22(foo), %l1
2616 xor %l1, %tle_lox10(foo), %o5
2617 ld [%g7 + %o5], %o1'
2620 tls_as_opt="-32 --fatal-warnings"
2626 if test "x$enable_tls" = xno ; then
2627 : # TLS explicitly disabled.
2628 elif test "x$enable_tls" = xyes ; then
2629 set_have_as_tls=yes # TLS explicitly enabled.
2630 elif test -z "$tls_first_major"; then
2631 : # If we don't have a check, assume no support.
2633 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2634 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2635 [set_have_as_tls=yes])
2637 if test $set_have_as_tls = yes ; then
2638 AC_DEFINE(HAVE_AS_TLS, 1,
2639 [Define if your assembler supports thread-local storage.])
2642 # Target-specific assembler checks.
2644 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2645 gcc_cv_ld_static_dynamic=no
2646 if test $in_tree_ld = yes ; then
2647 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2648 gcc_cv_ld_static_dynamic=yes
2650 elif test x$gcc_cv_ld != x; then
2651 # Check if linker supports -Bstatic/-Bdynamic option
2652 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2653 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2654 gcc_cv_ld_static_dynamic=yes
2657 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2658 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2659 [Define if your linker supports -Bstatic/-Bdynamic option.])
2661 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2663 if test x"$demangler_in_ld" = xyes; then
2664 AC_MSG_CHECKING(linker --demangle support)
2665 gcc_cv_ld_demangle=no
2666 if test $in_tree_ld = yes; then
2667 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2668 gcc_cv_ld_demangle=yes
2670 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2671 # Check if the GNU linker supports --demangle option
2672 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2673 gcc_cv_ld_demangle=yes
2676 if test x"$gcc_cv_ld_demangle" = xyes; then
2677 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2678 [Define if your linker supports --demangle option.])
2680 AC_MSG_RESULT($gcc_cv_ld_demangle)
2684 # All TARGET_ABI_OSF targets.
2685 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2686 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2687 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2690 extbl $3, $2, $3 !lituse_bytoff!1
2691 ldq $2, a($29) !literal!1
2692 ldq $4, b($29) !literal!2
2693 ldq_u $3, 0($2) !lituse_base!1
2694 ldq $27, f($29) !literal!5
2695 jsr $26, ($27), f !lituse_jsr!5
2696 ldah $29, 0($26) !gpdisp!3
2697 lda $0, c($29) !gprel
2698 ldah $1, d($29) !gprelhigh
2699 lda $1, d($1) !gprellow
2700 lda $29, 0($29) !gpdisp!3],,
2701 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2702 [Define if your assembler supports explicit relocations.])])
2703 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2704 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2707 ldq $27, a($29) !literal!1
2708 jsr $26, ($27), a !lituse_jsrdirect!1],,
2709 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2710 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2714 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2715 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2716 [-no-mul-bug-abort], [.text],,
2717 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2718 [Define if your assembler supports the -no-mul-bug-abort option.])])
2722 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2723 [.register %g2, #scratch],,
2724 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2725 [Define if your assembler supports .register.])])
2727 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2729 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2730 [Define if your assembler supports -relax option.])])
2732 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2733 gcc_cv_as_sparc_ua_pcrel,,
2741 .uaword %r_disp32(foo)],
2742 [if test x$gcc_cv_ld != x \
2743 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2744 gcc_cv_as_sparc_ua_pcrel=yes
2747 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2748 [Define if your assembler and linker support unaligned PC relative relocs.])
2750 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2751 gcc_cv_as_sparc_ua_pcrel_hidden,,
2756 .uaword %r_disp32(foo)
2757 .byte 0x32, 0x33, 0x34
2762 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2763 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2764 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2765 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2766 if $gcc_cv_objdump -R conftest 2> /dev/null \
2767 | grep 'DISP32' > /dev/null 2>&1; then
2770 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2774 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2775 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2776 ]) # unaligned pcrel relocs
2778 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2779 gcc_cv_as_sparc_offsetable_lo10,,
2782 or %g1, %lo(ab) + 12, %g1
2783 or %g1, %lo(ab + 12), %g1],
2784 [if test x$gcc_cv_objdump != x \
2785 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2786 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2787 gcc_cv_as_sparc_offsetable_lo10=yes
2789 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2790 [Define if your assembler supports offsetable %lo().])])
2794 i[34567]86-*-* | x86_64-*-*)
2797 cygwin* | pe | mingw32*)
2798 # Used for DWARF 2 in PE
2799 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2800 gcc_cv_as_ix86_pe_secrel32,
2806 [if test x$gcc_cv_ld != x \
2807 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2808 gcc_cv_as_ix86_pe_secrel32=yes
2811 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2812 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2816 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2817 gcc_cv_as_ix86_filds_fists,
2818 [2,9,0],, [filds mem; fists mem],,
2819 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2820 [Define if your assembler uses the new HImode fild and fist notation.])])
2822 gcc_GAS_CHECK_FEATURE([cmov syntax],
2823 gcc_cv_as_ix86_cmov_sun_syntax,,,
2824 [cmovl.l %edx, %eax],,
2825 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2826 [Define if your assembler supports the Sun syntax for cmov.])])
2828 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2829 gcc_cv_as_ix86_ffreep,,,
2831 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2832 [Define if your assembler supports the ffreep mnemonic.])])
2834 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
2835 gcc_cv_as_ix86_sahf,,,
2837 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
2838 [Define if your assembler supports the sahf mnemonic.])])
2840 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2841 gcc_cv_as_ix86_diff_sect_delta,,,
2849 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2850 [Define if your assembler supports the subtraction of symbols in different sections.])])
2852 # This one is used unconditionally by i386.[ch]; it is to be defined
2853 # to 1 if the feature is present, 0 otherwise.
2854 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2855 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2861 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2862 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2863 [Define true if the assembler supports '.long foo@GOTOFF'.])
2867 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2868 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2870 addl r15 = @ltoffx(x#), gp
2872 ld8.mov r16 = [[r15]], x#],,
2873 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2874 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2880 *-*-aix*) conftest_s=' .machine "pwr5"
2884 gcc_GAS_CHECK_FEATURE([.machine directive support],
2885 gcc_cv_as_machine_directive,,,
2886 [ .machine ppc7400])
2887 if test x$gcc_cv_as_machine_directive != xyes; then
2888 echo "*** This target requires an assembler supporting \".machine\"" >&2
2889 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2890 test x$build = x$target && exit 1
2894 *) conftest_s=' .machine power4
2899 gcc_GAS_CHECK_FEATURE([mfcr field support],
2900 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2902 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2903 [Define if your assembler supports mfcr field.])])
2906 *-*-aix*) conftest_s=' .machine "pwr5"
2909 *) conftest_s=' .machine power5
2914 gcc_GAS_CHECK_FEATURE([popcntb support],
2915 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2917 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2918 [Define if your assembler supports popcntb field.])])
2921 *-*-aix*) conftest_s=' .machine "pwr5x"
2924 *) conftest_s=' .machine power5
2929 gcc_GAS_CHECK_FEATURE([fp round support],
2930 gcc_cv_as_powerpc_fprnd, [2,17,0],,
2932 [AC_DEFINE(HAVE_AS_FPRND, 1,
2933 [Define if your assembler supports fprnd.])])
2936 *-*-aix*) conftest_s=' .machine "pwr6"
2939 *) conftest_s=' .machine power6
2944 gcc_GAS_CHECK_FEATURE([move fp gpr support],
2945 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
2947 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
2948 [Define if your assembler supports mffgpr and mftgpr.])])
2951 *-*-aix*) conftest_s=' .csect .text[[PR]]
2953 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2957 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2958 *) conftest_s=' .text
2960 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2963 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2964 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2966 [AC_DEFINE(HAVE_AS_REL16, 1,
2967 [Define if your assembler supports R_PPC_REL16 relocs.])])
2970 *-*-aix*) conftest_s=' .machine "pwr6"
2973 *) conftest_s=' .machine power6
2978 gcc_GAS_CHECK_FEATURE([compare bytes support],
2979 gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
2981 [AC_DEFINE(HAVE_AS_CMPB, 1,
2982 [Define if your assembler supports cmpb.])])
2985 *-*-aix*) conftest_s=' .machine "pwr6"
2988 *) conftest_s=' .machine power6
2993 gcc_GAS_CHECK_FEATURE([decimal float support],
2994 gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
2996 [AC_DEFINE(HAVE_AS_DFP, 1,
2997 [Define if your assembler supports DFP instructions.])])
2999 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3000 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3001 [.gnu_attribute 4,1],,
3002 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3003 [Define if your assembler supports .gnu_attribute.])])
3007 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3008 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3009 [ lw $4,%gp_rel(foo)($4)],,
3010 [if test x$target_cpu_default = x
3011 then target_cpu_default=MASK_EXPLICIT_RELOCS
3012 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3014 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3015 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3016 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3017 [Define if the assembler understands -mno-shared.])])
3019 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3020 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3021 [.gnu_attribute 4,1],,
3022 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3023 [Define if your assembler supports .gnu_attribute.])])
3025 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3026 gcc_cv_as_mips_dtprelword, [2,18,0],,
3027 [.section .tdata,"awT",@progbits
3031 .dtprelword x+0x8000],,
3032 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3033 [Define if your assembler supports .dtprelword.])])
3037 # Mips and HP-UX need the GNU assembler.
3038 # Linux on IA64 might be able to use the Intel assembler.
3041 mips*-*-* | *-*-hpux* )
3042 if test x$gas_flag = xyes \
3043 || test x"$host" != x"$build" \
3044 || test ! -x "$gcc_cv_as" \
3045 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3048 echo "*** This configuration requires the GNU assembler" >&2
3054 # ??? Not all targets support dwarf2 debug_line, even within a version
3055 # of gas. Moreover, we need to emit a valid instruction to trigger any
3056 # info to the output file. So, as supported targets are added to gas 2.11,
3057 # add some instruction here to (also) show we expect this might work.
3058 # ??? Once 2.11 is released, probably need to add first known working
3059 # version to the per-target configury.
3061 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3062 | x86_64*-*-* | hppa*-*-* | arm*-*-* \
3063 | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-* | spu-*-*)
3066 ia64*-*-* | s390*-*-*)
3073 if test x"$insn" != x; then
3075 .file 1 \"conftest.s\"
3078 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3079 gcc_cv_as_dwarf2_debug_line,
3080 [elf,2,11,0],, [$conftest_s],
3081 [if test x$gcc_cv_objdump != x \
3082 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3083 | grep debug_line > /dev/null 2>&1; then
3084 gcc_cv_as_dwarf2_debug_line=yes
3087 # The .debug_line file table must be in the exact order that
3088 # we specified the files, since these indices are also used
3089 # by DW_AT_decl_file. Approximate this test by testing if
3090 # the assembler bitches if the same index is assigned twice.
3091 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3092 gcc_cv_as_dwarf2_file_buggy,,,
3096 if test $gcc_cv_as_dwarf2_debug_line = yes \
3097 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3098 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3099 [Define if your assembler supports dwarf2 .file/.loc directives,
3100 and preserves file table indices exactly as given.])
3103 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3104 gcc_cv_as_gdwarf2_flag,
3105 [elf,2,11,0], [--gdwarf2], [$insn],,
3106 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3107 [Define if your assembler supports the --gdwarf2 option.])])
3109 gcc_GAS_CHECK_FEATURE([--gstabs option],
3110 gcc_cv_as_gstabs_flag,
3111 [elf,2,11,0], [--gstabs], [$insn],
3112 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3113 # and warns about it, but still exits successfully. So check for
3115 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3117 else gcc_cv_as_gstabs_flag=yes
3119 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3120 [Define if your assembler supports the --gstabs option.])])
3122 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3123 gcc_cv_as_debug_prefix_map_flag,
3124 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3125 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3126 [Define if your assembler supports the --debug-prefix-map option.])])
3129 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3130 [gcc_cv_as_line_zero],
3131 [gcc_cv_as_line_zero=no
3132 if test $in_tree_gas = yes; then
3133 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3134 elif test "x$gcc_cv_as" != x; then
3135 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3136 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3137 test "x`cat conftest.out`" = x
3139 gcc_cv_as_line_zero=yes
3141 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3142 cat conftest.s >&AS_MESSAGE_LOG_FD
3143 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3144 cat conftest.out >&AS_MESSAGE_LOG_FD
3146 rm -f conftest.o conftest.s conftest.out
3148 if test "x$gcc_cv_as_line_zero" = xyes; then
3149 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3150 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3153 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3154 gcc_cv_ld_ro_rw_mix=unknown
3155 if test $in_tree_ld = yes ; then
3156 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3157 && test $in_tree_ld_is_elf = yes; then
3158 gcc_cv_ld_ro_rw_mix=read-write
3160 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3161 echo '.section myfoosect, "a"' > conftest1.s
3162 echo '.section myfoosect, "aw"' > conftest2.s
3163 echo '.byte 1' >> conftest2.s
3164 echo '.section myfoosect, "a"' > conftest3.s
3165 echo '.byte 0' >> conftest3.s
3166 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3167 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3168 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3169 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3170 conftest2.o conftest3.o > /dev/null 2>&1; then
3171 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3172 | sed -e '/myfoosect/!d' -e N`
3173 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3174 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3175 gcc_cv_ld_ro_rw_mix=read-only
3177 gcc_cv_ld_ro_rw_mix=read-write
3182 rm -f conftest.* conftest[123].*
3185 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3186 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3187 [Define if your linker links a mix of read-only
3188 and read-write sections into a read-write section.])
3190 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3192 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3193 gcc_cv_ld_eh_frame_hdr=no
3194 if test $in_tree_ld = yes ; then
3195 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3196 && test $in_tree_ld_is_elf = yes; then
3197 gcc_cv_ld_eh_frame_hdr=yes
3199 elif test x$gcc_cv_ld != x; then
3200 # Check if linker supports --eh-frame-hdr option
3201 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3202 gcc_cv_ld_eh_frame_hdr=yes
3205 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3206 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3207 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3208 [Define if your linker supports --eh-frame-hdr option.])
3210 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3212 AC_MSG_CHECKING(linker position independent executable support)
3214 if test $in_tree_ld = yes ; then
3215 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3216 && test $in_tree_ld_is_elf = yes; then
3219 elif test x$gcc_cv_ld != x; then
3220 # Check if linker supports -pie option
3221 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3225 if test x"$gcc_cv_ld_pie" = xyes; then
3226 AC_DEFINE(HAVE_LD_PIE, 1,
3227 [Define if your linker supports -pie option.])
3229 AC_MSG_RESULT($gcc_cv_ld_pie)
3231 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3232 gcc_cv_ld_eh_gc_sections=no
3233 if test $in_tree_ld = yes ; then
3234 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3235 && test $in_tree_ld_is_elf = yes; then
3236 gcc_cv_ld_eh_gc_sections=yes
3238 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3239 cat > conftest.s <<EOF
3242 .type _start, @function
3245 .size _start, .-_start
3246 .section .text.foo,"ax",@progbits
3247 .type foo, @function
3251 .section .gcc_except_table.foo,"a",@progbits
3254 .section .eh_frame,"a",@progbits
3257 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3258 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3259 | grep "gc-sections option ignored" > /dev/null; then
3260 gcc_cv_ld_eh_gc_sections=no
3261 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3262 gcc_cv_ld_eh_gc_sections=yes
3263 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3264 if test x$gcc_cv_as_comdat_group != xyes; then
3265 gcc_cv_ld_eh_gc_sections=no
3266 cat > conftest.s <<EOF
3269 .type _start, @function
3272 .size _start, .-_start
3273 .section .gnu.linkonce.t.foo,"ax",@progbits
3274 .type foo, @function
3278 .section .gcc_except_table.foo,"a",@progbits
3281 .section .eh_frame,"a",@progbits
3284 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3285 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3286 | grep "gc-sections option ignored" > /dev/null; then
3287 gcc_cv_ld_eh_gc_sections=no
3288 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3289 gcc_cv_ld_eh_gc_sections=yes
3295 rm -f conftest.s conftest.o conftest
3299 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3300 gcc_cv_ld_eh_gc_sections=no
3303 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3304 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3305 [Define if your linker supports garbage collection of
3306 sections in presence of EH frames.])
3308 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3314 AC_CACHE_CHECK(linker --as-needed support,
3315 gcc_cv_ld_as_needed,
3316 [gcc_cv_ld_as_needed=no
3317 if test $in_tree_ld = yes ; then
3318 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3319 && test $in_tree_ld_is_elf = yes; then
3320 gcc_cv_ld_as_needed=yes
3322 elif test x$gcc_cv_ld != x; then
3323 # Check if linker supports --as-needed and --no-as-needed options
3324 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3325 gcc_cv_ld_as_needed=yes
3329 if test x"$gcc_cv_ld_as_needed" = xyes; then
3330 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3331 [Define if your linker supports --as-needed and --no-as-needed options.])
3334 case "$target:$tm_file" in
3335 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3336 AC_CACHE_CHECK(linker support for omitting dot symbols,
3337 gcc_cv_ld_no_dot_syms,
3338 [gcc_cv_ld_no_dot_syms=no
3339 if test $in_tree_ld = yes ; then
3340 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3341 gcc_cv_ld_no_dot_syms=yes
3343 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3344 cat > conftest1.s <<EOF
3348 cat > conftest2.s <<EOF
3349 .section ".opd","aw"
3354 .quad .LEfoo,.TOC.@tocbase,0
3360 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3361 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3362 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3363 gcc_cv_ld_no_dot_syms=yes
3365 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3368 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3369 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3370 [Define if your PowerPC64 linker only needs function descriptor syms.])
3375 AC_CACHE_CHECK(linker --sysroot support,
3377 [gcc_cv_ld_sysroot=no
3378 if test $in_tree_ld = yes ; then
3379 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3380 gcc_cv_ld_sysroot=yes
3382 elif test x$gcc_cv_ld != x; then
3383 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3384 gcc_cv_ld_sysroot=yes
3387 if test x"$gcc_cv_ld_sysroot" = xyes; then
3388 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3389 [Define if your linker supports --sysroot.])
3392 if test x$with_sysroot = x && test x$host = x$target \
3393 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3394 && test "$prefix" != "NONE"; then
3395 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3396 [Define to PREFIX/include if cpp should also search that directory.])
3399 # Test for stack protector support in target C library.
3400 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3401 gcc_cv_libc_provides_ssp,
3402 [gcc_cv_libc_provides_ssp=no
3405 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3406 if test "x$with_sysroot" = x; then
3407 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3408 elif test "x$with_build_sysroot" != "x"; then
3409 glibc_header_dir="${with_build_sysroot}/usr/include"
3410 elif test "x$with_sysroot" = xyes; then
3411 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3413 glibc_header_dir="${with_sysroot}/usr/include"
3416 glibc_header_dir=/usr/include
3418 # glibc 2.4 and later provides __stack_chk_fail and
3419 # either __stack_chk_guard, or TLS access to stack guard canary.
3420 if test -f $glibc_header_dir/features.h \
3421 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3422 $glibc_header_dir/features.h > /dev/null; then
3423 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3424 $glibc_header_dir/features.h > /dev/null; then
3425 gcc_cv_libc_provides_ssp=yes
3426 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3427 $glibc_header_dir/features.h > /dev/null \
3428 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3429 $glibc_header_dir/features.h > /dev/null; then
3430 gcc_cv_libc_provides_ssp=yes
3431 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
3432 $glibc_header_dir/features.h > /dev/null && \
3433 test -f $glibc_header_dir/bits/uClibc_config.h && \
3434 $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
3435 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
3436 gcc_cv_libc_provides_ssp=yes
3441 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3442 [echo "no __stack_chk_fail on this target"])
3444 *) gcc_cv_libc_provides_ssp=no ;;
3447 if test x$gcc_cv_libc_provides_ssp = xyes; then
3448 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3449 [Define if your target C library provides stack protector support])
3452 # Check if TFmode long double should be used by default or not.
3453 # Some glibc targets used DFmode long double, but with glibc 2.4
3454 # and later they can use TFmode.
3456 powerpc*-*-linux* | \
3461 AC_ARG_WITH(long-double-128,
3462 [ --with-long-double-128 Use 128-bit long double by default.],
3463 gcc_cv_target_ldbl128="$with_long_double_128",
3464 [gcc_cv_target_ldbl128=no
3465 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3466 if test "x$with_sysroot" = x; then
3467 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3468 elif test "x$with_build_sysroot" != "x"; then
3469 glibc_header_dir="${with_build_sysroot}/usr/include"
3470 elif test "x$with_sysroot" = xyes; then
3471 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3473 glibc_header_dir="${with_sysroot}/usr/include"
3476 glibc_header_dir=/usr/include
3479 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3480 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3481 && gcc_cv_target_ldbl128=yes
3486 if test x$gcc_cv_target_ldbl128 = xyes; then
3487 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3488 [Define if TFmode long double should be the default])
3491 # Find out what GC implementation we want, or may, use.
3493 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3501 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3504 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3509 echo "Using $GGC for garbage collection."
3511 # Use the system's zlib library.
3513 zlibinc="-I\$(srcdir)/../zlib"
3514 AC_ARG_WITH(system-zlib,
3515 [ --with-system-zlib use installed libz],
3522 dnl Very limited version of automake's enable-maintainer-mode
3524 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3525 dnl maintainer-mode is disabled by default
3526 AC_ARG_ENABLE(maintainer-mode,
3527 [ --enable-maintainer-mode
3528 enable make rules and dependencies not useful
3529 (and sometimes confusing) to the casual installer],
3530 maintainer_mode=$enableval,
3533 AC_MSG_RESULT($maintainer_mode)
3535 if test "$maintainer_mode" = "yes"; then
3546 # Make empty files to contain the specs and options for each language.
3547 # Then add #include lines to for a compiler that has specs and/or options.
3553 # These (without "all_") are set in each config-lang.in.
3554 # `language' must be a single word so is spelled singularly.
3557 all_outputs='Makefile gccbug libada-mk'
3558 # List of language makefile fragments.
3560 # List of language subdirectory makefiles. Deprecated.
3562 # Additional files for gengtype
3563 all_gtfiles="$target_gtfiles"
3565 # These are the languages that are set in --enable-languages,
3566 # and are available in the GCC tree.
3567 all_selected_languages=
3569 # Add the language fragments.
3570 # Languages are added via two mechanisms. Some information must be
3571 # recorded in makefile variables, these are defined in config-lang.in.
3572 # We accumulate them and plug them into the main Makefile.
3573 # The other mechanism is a set of hooks for each of the main targets
3574 # like `clean', `install', etc.
3576 language_hooks="Make-hooks"
3578 for lang in ${srcdir}/*/config-lang.in
3581 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3583 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3584 if test "x$lang_alias" = x
3586 echo "$lang doesn't set \$language." 1>&2
3589 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3590 subdirs="$subdirs $subdir"
3592 # $gcc_subdir is where the gcc integration files are to be found
3593 # for a language, both for internal compiler purposes (compiler
3594 # sources implementing front-end to GCC tree converters), and for
3595 # build infrastructure purposes (Make-lang.in, etc.)
3597 # This will be <subdir> (relative to $srcdir) if a line like
3598 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
3599 # is found in <langdir>/config-lang.in, and will remain <langdir>
3602 # Except for the language alias (fetched above), the regular
3603 # "config-lang.in" contents are always retrieved from $gcc_subdir,
3604 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
3605 # only this and the language alias.
3607 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
3608 if [ "$gcc_subdir" = "" ]; then
3609 gcc_subdir="$subdir"
3612 case ",$enable_languages," in
3614 all_selected_languages="$all_selected_languages $lang_alias"
3615 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
3616 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
3628 . ${srcdir}/$gcc_subdir/config-lang.in
3629 if test "x$language" = x
3631 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
3636 case ",$enable_languages," in
3639 for i in $subdir_requires; do
3640 test -f "${srcdir}/$i/config-lang.in" && continue
3648 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
3649 if test -f $srcdir/$gcc_subdir/lang.opt; then
3650 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
3652 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
3653 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
3655 if test -f ${srcdir}/$gcc_subdir/Makefile.in
3656 then all_lang_makefiles="$gcc_subdir/Makefile"
3658 all_languages="$all_languages $language"
3659 all_compilers="$all_compilers $compilers"
3660 all_outputs="$all_outputs $outputs"
3661 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
3664 # Pick up gtfiles for c
3666 . ${srcdir}/c-config-lang.in
3667 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
3670 for language in $all_selected_languages
3672 check_languages="$check_languages check-$language"
3675 # We link each language in with a set of hooks, reached indirectly via
3676 # lang.${target}. Only do so for selected languages.
3680 target_list="all.cross start.encap rest.encap tags \
3681 install-common install-man install-info install-pdf dvi pdf \
3682 html uninstall info man srcextra srcman srcinfo \
3683 mostlyclean clean distclean maintainer-clean"
3685 for t in $target_list
3688 for lang in $all_selected_languages
3692 echo "lang.$t: $x" >> Make-hooks
3701 echo "dir ." > .gdbinit
3702 echo "dir ${srcdir}" >> .gdbinit
3703 if test x$gdb_needs_out_file_path = xyes
3705 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3707 if test "x$subdirs" != x; then
3710 echo "dir ${srcdir}/$s" >> .gdbinit
3713 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3715 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
3716 AC_SUBST(gcc_tooldir)
3719 # Find a directory in which to install a shared libgcc.
3721 AC_ARG_ENABLE(version-specific-runtime-libs,
3722 [ --enable-version-specific-runtime-libs
3723 specify that runtime libraries should be
3724 installed in a compiler-specific directory])
3726 AC_ARG_WITH(slibdir,
3727 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3728 slibdir="$with_slibdir",
3729 if test "${enable_version_specific_runtime_libs+set}" = set; then
3730 slibdir='$(libsubdir)'
3731 elif test "$host" != "$target"; then
3732 slibdir='$(build_tooldir)/lib'
3738 AC_ARG_WITH(datarootdir,
3739 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3740 datarootdir="\${prefix}/$with_datarootdir",
3741 datarootdir='$(prefix)/share')
3742 AC_SUBST(datarootdir)
3745 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3746 docdir="\${prefix}/$with_docdir",
3747 docdir='$(datarootdir)')
3750 AC_ARG_WITH(htmldir,
3751 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3752 htmldir="\${prefix}/$with_htmldir",
3753 htmldir='$(docdir)')
3756 # Substitute configuration variables
3759 AC_SUBST(all_compilers)
3760 AC_SUBST(all_gtfiles)
3761 AC_SUBST(all_lang_makefrags)
3762 AC_SUBST(all_lang_makefiles)
3763 AC_SUBST(all_languages)
3764 AC_SUBST(all_selected_languages)
3765 AC_SUBST(build_exeext)
3766 AC_SUBST(build_install_headers_dir)
3767 AC_SUBST(build_xm_file_list)
3768 AC_SUBST(build_xm_include_list)
3769 AC_SUBST(build_xm_defines)
3770 AC_SUBST(build_file_translate)
3771 AC_SUBST(check_languages)
3772 AC_SUBST(cpp_install_dir)
3773 AC_SUBST(xmake_file)
3774 AC_SUBST(tmake_file)
3775 AC_SUBST(extra_gcc_objs)
3776 AC_SUBST(extra_headers_list)
3777 AC_SUBST(extra_objs)
3778 AC_SUBST(extra_parts)
3779 AC_SUBST(extra_passes)
3780 AC_SUBST(extra_programs)
3781 AC_SUBST(float_h_file)
3782 AC_SUBST(gcc_config_arguments)
3783 AC_SUBST(gcc_gxx_include_dir)
3784 AC_SUBST(host_exeext)
3785 AC_SUBST(host_xm_file_list)
3786 AC_SUBST(host_xm_include_list)
3787 AC_SUBST(host_xm_defines)
3788 AC_SUBST(out_host_hook_obj)
3790 AC_SUBST(lang_opt_files)
3791 AC_SUBST(lang_specs_files)
3792 AC_SUBST(lang_tree_files)
3793 AC_SUBST(local_prefix)
3795 AC_SUBST(objc_boehm_gc)
3797 AC_SUBST(out_object_file)
3798 AC_SUBST(thread_file)
3799 AC_SUBST(tm_file_list)
3800 AC_SUBST(tm_include_list)
3801 AC_SUBST(tm_defines)
3802 AC_SUBST(tm_p_file_list)
3803 AC_SUBST(tm_p_include_list)
3804 AC_SUBST(xm_file_list)
3805 AC_SUBST(xm_include_list)
3806 AC_SUBST(xm_defines)
3807 AC_SUBST(c_target_objs)
3808 AC_SUBST(cxx_target_objs)
3809 AC_SUBST(fortran_target_objs)
3810 AC_SUBST(target_cpu_default)
3812 AC_SUBST_FILE(language_hooks)
3815 if test x${build} = x${host} ; then
3816 if test x${host} = x${target} ; then
3817 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3819 echo "Links are now set up to build a cross-compiler" 1>&2
3820 echo " from ${host} to ${target}." 1>&2
3823 if test x${host} = x${target} ; then
3824 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3825 echo " for ${target}." 1>&2
3827 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3828 echo " from ${host} to ${target}." 1>&2
3832 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3833 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3835 # Configure the subdirectories
3836 # AC_CONFIG_SUBDIRS($subdirs)
3838 # Create the Makefile
3839 # and configure language subdirectories
3840 AC_CONFIG_FILES($all_outputs)
3842 AC_CONFIG_COMMANDS([default],
3844 case ${CONFIG_HEADERS} in
3845 *auto-host.h:config.in*)
3848 # Make sure all the subdirs exist.
3849 for d in $subdirs doc build
3851 test -d $d || mkdir $d
3854 [subdirs='$subdirs'])