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 ${realsrcdir}/configure \
1464 --enable-languages=${enable_languages-all} \
1465 --target=$target_alias --host=$build_alias --build=$build_alias
1466 CFLAGS="${saved_CFLAGS}"
1468 # We just finished tests for the build machine, so rename
1469 # the file auto-build.h in the gcc directory.
1470 mv auto-host.h ../auto-build.h
1473 build_auto=auto-build.h
1475 AC_SUBST(build_subdir)
1477 tm_file="${tm_file} defaults.h"
1478 tm_p_file="${tm_p_file} tm-preds.h"
1479 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1480 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1481 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1482 # put this back in temporarily.
1483 xm_file="auto-host.h ansidecl.h ${xm_file}"
1490 # Compile in configure arguments.
1491 if test -f configargs.h ; then
1492 # Being re-configured.
1493 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1494 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1496 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1499 # Double all backslashes and backslash all quotes to turn
1500 # gcc_config_arguments into a C string.
1501 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1502 $gcc_config_arguments
1504 gcc_config_arguments_str=`cat conftest.out`
1507 cat > configargs.h <<EOF
1508 /* Generated automatically. */
1509 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1510 static const char thread_model[] = "$thread_file";
1512 static const struct {
1513 const char *name, *value;
1514 } configure_default_options[] = $configure_default_options;
1518 # Internationalization
1519 ZW_GNU_GETTEXT_SISTER_DIR
1521 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1522 # -liconv on the link line twice.
1523 case "$LIBINTL" in *$LIBICONV*)
1527 AC_ARG_ENABLE(secureplt,
1528 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1532 [ --enable-cld enable -mcld by default for 32bit x86], [],
1535 # Windows32 Registry support for specifying GCC installation paths.
1536 AC_ARG_ENABLE(win32-registry,
1537 [ --disable-win32-registry
1538 disable lookup of installation paths in the
1539 Registry on Windows hosts
1540 --enable-win32-registry enable registry lookup (default)
1541 --enable-win32-registry=KEY
1542 use KEY instead of GCC version as the last portion
1543 of the registry key],,)
1546 win32 | pe | cygwin* | mingw32* | uwin*)
1547 if test "x$enable_win32_registry" != xno; then
1548 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1551 if test "x$enable_win32_registry" != xno; then
1552 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1553 [Define to 1 if installation paths should be looked up in the Windows
1554 Registry. Ignored on non-Windows hosts.])
1556 if test "x$enable_win32_registry" != xyes \
1557 && test "x$enable_win32_registry" != x; then
1558 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1559 [Define to be the last component of the Windows registry key under which
1560 to look for installation paths. The full key used will be
1561 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1562 The default is the GCC version number.])
1568 # Get an absolute path to the GCC top-level source directory
1569 holddir=`${PWDCMD-pwd}`
1571 topdir=`${PWDCMD-pwd}`
1574 # Conditionalize the makefile for this host machine.
1576 for f in ${host_xmake_file}
1578 if test -f ${srcdir}/config/$f
1580 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1584 # Conditionalize the makefile for this target machine.
1586 for f in ${tmake_file}
1588 if test -f ${srcdir}/config/$f
1590 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1593 tmake_file="${tmake_file_}"
1595 # This is a terrible hack which will go away some day.
1596 host_cc_for_libada=${CC}
1597 AC_SUBST(host_cc_for_libada)
1599 out_object_file=`basename $out_file .c`.o
1601 tm_file_list="options.h"
1602 tm_include_list="options.h"
1603 for f in $tm_file; do
1606 f=`echo $f | sed 's/^..//'`
1607 tm_file_list="${tm_file_list} $f"
1608 tm_include_list="${tm_include_list} $f"
1611 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1612 tm_include_list="${tm_include_list} $f"
1615 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1616 tm_include_list="${tm_include_list} config/$f"
1623 for f in $tm_p_file; do
1626 tm_p_file_list="${tm_p_file_list} $f"
1627 tm_p_include_list="${tm_p_include_list} $f"
1630 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1631 tm_p_include_list="${tm_p_include_list} config/$f"
1637 for f in $xm_file; do
1640 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1641 xm_include_list="${xm_include_list} $f"
1644 xm_file_list="${xm_file_list} $f"
1645 xm_include_list="${xm_include_list} $f"
1648 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1649 xm_include_list="${xm_include_list} config/$f"
1655 host_xm_include_list=
1656 for f in $host_xm_file; do
1659 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1660 host_xm_include_list="${host_xm_include_list} $f"
1663 host_xm_file_list="${host_xm_file_list} $f"
1664 host_xm_include_list="${host_xm_include_list} $f"
1667 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1668 host_xm_include_list="${host_xm_include_list} config/$f"
1674 for f in $build_xm_file; do
1677 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1678 build_xm_include_list="${build_xm_include_list} $f"
1680 auto-build.h | auto-host.h )
1681 build_xm_file_list="${build_xm_file_list} $f"
1682 build_xm_include_list="${build_xm_include_list} $f"
1685 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1686 build_xm_include_list="${build_xm_include_list} config/$f"
1691 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1692 # cross-compiler which does not use the native headers and libraries.
1693 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1694 CROSS= AC_SUBST(CROSS)
1695 ALL=all.internal AC_SUBST(ALL)
1696 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1698 if test "x$with_build_sysroot" != x; then
1699 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1701 # This value is used, even on a native system, because
1702 # CROSS_SYSTEM_HEADER_DIR is just
1703 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1704 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1707 if test x$host != x$target
1709 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1711 SYSTEM_HEADER_DIR=$build_system_header_dir
1712 case "$host","$target" in
1713 # Darwin crosses can use the host system's libraries and headers,
1714 # because of the fat library support. Of course, it must be the
1715 # same version of Darwin on both sides. Allow the user to
1716 # just say --target=foo-darwin without a version number to mean
1717 # "the version on this system".
1718 *-*-darwin*,*-*-darwin*)
1719 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1720 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1721 if test $hostos = $targetos -o $targetos = darwin ; then
1723 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1728 i?86-*-*,x86_64-*-* \
1729 | powerpc*-*-*,powerpc64*-*-*)
1730 CROSS="$CROSS -DNATIVE_CROSS" ;;
1732 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1733 SYSTEM_HEADER_DIR=$build_system_header_dir
1736 # If this is a cross-compiler that does not
1737 # have its own set of headers then define
1740 # If this is using newlib, without having the headers available now,
1741 # then define inhibit_libc in LIBGCC2_CFLAGS.
1742 # This prevents libgcc2 from containing any code which requires libc
1744 : ${inhibit_libc=false}
1745 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1746 test x$with_newlib = xyes ; } &&
1747 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1750 AC_SUBST(inhibit_libc)
1752 # When building gcc with a cross-compiler, we need to adjust things so
1753 # that the generator programs are still built with the native compiler.
1754 # Also, we cannot run fixincludes or fix-header.
1756 # These are the normal (build=host) settings:
1757 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1758 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1759 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1761 # Possibly disable fixproto, on a per-target basis.
1762 case ${use_fixproto} in
1767 STMP_FIXPROTO=stmp-fixproto
1770 AC_SUBST(STMP_FIXPROTO)
1772 # And these apply if build != host, or we are generating coverage data
1773 if test x$build != x$host || test "x$coverage_flags" != x
1775 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1777 if test "x$TARGET_SYSTEM_ROOT" = x; then
1778 if test "x$STMP_FIXPROTO" != x; then
1779 STMP_FIXPROTO=stmp-install-fixproto
1784 # Expand extra_headers to include complete path.
1785 # This substitutes for lots of t-* files.
1787 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1788 for file in ${extra_headers} ; do
1789 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1792 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1793 if test x"$use_gcc_tgmath" = xyes
1794 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1797 # Define collect2 in Makefile.
1798 case $host_can_use_collect2 in
1800 *) collect2='collect2$(exeext)' ;;
1802 AC_SUBST([collect2])
1804 # Add a definition of USE_COLLECT2 if system wants one.
1805 case $use_collect2 in
1806 no) use_collect2= ;;
1809 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1810 xm_defines="${xm_defines} USE_COLLECT2"
1811 case $host_can_use_collect2 in
1813 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1819 # ---------------------------
1820 # Assembler & linker features
1821 # ---------------------------
1823 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1824 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1825 # However when ld-new is first executed from the build tree, libtool will
1826 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1827 # to the build tree. While doing this we need to use the previous-stage
1828 # linker, or we have an infinite loop. The presence of a shell script as
1829 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1830 # the gcc/collect-ld script. So we need to know how libtool works, or
1831 # exec-tool will fail.
1833 m4_defun([_LT_CONFIG_COMMANDS], [])
1836 AC_SUBST(enable_fast_install)
1838 # Identify the assembler which will work hand-in-glove with the newly
1839 # built GCC, so that we can examine its features. This is the assembler
1840 # which will be driven by the driver program.
1842 # If build != host, and we aren't building gas in-tree, we identify a
1843 # build->target assembler and hope that it will have the same features
1844 # as the host->target assembler we'll be using.
1845 gcc_cv_gas_major_version=
1846 gcc_cv_gas_minor_version=
1847 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1849 m4_pattern_allow([AS_FOR_TARGET])dnl
1850 AS_VAR_SET_IF(gcc_cv_as,, [
1851 if test -x "$DEFAULT_ASSEMBLER"; then
1852 gcc_cv_as="$DEFAULT_ASSEMBLER"
1853 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1854 && test -f ../gas/Makefile \
1855 && test x$build = x$host; then
1856 gcc_cv_as=../gas/as-new$build_exeext
1857 elif test -x as$build_exeext; then
1858 # Build using assembler in the current directory.
1859 gcc_cv_as=./as$build_exeext
1860 elif test -x $AS_FOR_TARGET; then
1861 gcc_cv_as="$AS_FOR_TARGET"
1863 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1866 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1867 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1868 case "$ORIGINAL_AS_FOR_TARGET" in
1869 ./as | ./as$build_exeext) ;;
1870 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1873 AC_MSG_CHECKING(what assembler to use)
1874 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1875 # Single tree build which includes gas. We want to prefer it
1876 # over whatever linker top-level may have detected, since
1877 # we'll use what we're building after installation anyway.
1878 AC_MSG_RESULT(newly built gas)
1880 _gcc_COMPUTE_GAS_VERSION
1881 in_tree_gas_is_elf=no
1882 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1883 || (grep 'obj_format = multi' ../gas/Makefile \
1884 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1886 in_tree_gas_is_elf=yes
1889 AC_MSG_RESULT($gcc_cv_as)
1893 # Identify the linker which will work hand-in-glove with the newly
1894 # built GCC, so that we can examine its features. This is the linker
1895 # which will be driven by the driver program.
1897 # If build != host, and we aren't building gas in-tree, we identify a
1898 # build->target linker and hope that it will have the same features
1899 # as the host->target linker we'll be using.
1900 gcc_cv_gld_major_version=
1901 gcc_cv_gld_minor_version=
1902 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1903 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1905 AS_VAR_SET_IF(gcc_cv_ld,, [
1906 if test -x "$DEFAULT_LINKER"; then
1907 gcc_cv_ld="$DEFAULT_LINKER"
1908 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1909 && test -f ../ld/Makefile \
1910 && test x$build = x$host; then
1911 gcc_cv_ld=../ld/ld-new$build_exeext
1912 elif test -x collect-ld$build_exeext; then
1913 # Build using linker in the current directory.
1914 gcc_cv_ld=./collect-ld$build_exeext
1915 elif test -x $LD_FOR_TARGET; then
1916 gcc_cv_ld="$LD_FOR_TARGET"
1918 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1921 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1922 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1923 case "$ORIGINAL_LD_FOR_TARGET" in
1924 ./collect-ld | ./collect-ld$build_exeext) ;;
1925 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1928 AC_MSG_CHECKING(what linker to use)
1929 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1930 # Single tree build which includes ld. We want to prefer it
1931 # over whatever linker top-level may have detected, since
1932 # we'll use what we're building after installation anyway.
1933 AC_MSG_RESULT(newly built ld)
1935 in_tree_ld_is_elf=no
1936 if (grep 'EMUL = .*elf' ../ld/Makefile \
1937 || grep 'EMUL = .*linux' ../ld/Makefile \
1938 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1939 in_tree_ld_is_elf=yes
1941 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
1944 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1945 if test x$gcc_cv_gld_version != x; then
1949 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1950 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1953 AC_MSG_RESULT($gcc_cv_ld)
1957 # Figure out what nm we will be using.
1958 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1959 AS_VAR_SET_IF(gcc_cv_nm,, [
1960 if test -f $gcc_cv_binutils_srcdir/configure.in \
1961 && test -f ../binutils/Makefile \
1962 && test x$build = x$host; then
1963 gcc_cv_nm=../binutils/nm-new$build_exeext
1964 elif test -x nm$build_exeext; then
1965 gcc_cv_nm=./nm$build_exeext
1966 elif test -x $NM_FOR_TARGET; then
1967 gcc_cv_nm="$NM_FOR_TARGET"
1969 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1972 AC_MSG_CHECKING(what nm to use)
1973 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1974 # Single tree build which includes binutils.
1975 AC_MSG_RESULT(newly built nm)
1978 AC_MSG_RESULT($gcc_cv_nm)
1982 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1983 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1984 case "$ORIGINAL_NM_FOR_TARGET" in
1985 ./nm | ./nm$build_exeext) ;;
1986 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
1990 # Figure out what objdump we will be using.
1991 AS_VAR_SET_IF(gcc_cv_objdump,, [
1992 if test -f $gcc_cv_binutils_srcdir/configure.in \
1993 && test -f ../binutils/Makefile \
1994 && test x$build = x$host; then
1995 # Single tree build which includes binutils.
1996 gcc_cv_objdump=../binutils/objdump$build_exeext
1997 elif test -x objdump$build_exeext; then
1998 gcc_cv_objdump=./objdump$build_exeext
1999 elif test -x $OBJDUMP_FOR_TARGET; then
2000 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2002 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2005 AC_MSG_CHECKING(what objdump to use)
2006 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2007 # Single tree build which includes binutils.
2008 AC_MSG_RESULT(newly built objdump)
2009 elif test x$gcc_cv_objdump = x; then
2010 AC_MSG_RESULT(not found)
2012 AC_MSG_RESULT($gcc_cv_objdump)
2015 # Figure out what assembler alignment features are present.
2016 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2020 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2021 [Define if your assembler supports .balign and .p2align.])])
2023 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2026 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2027 [Define if your assembler supports specifying the maximum number
2028 of bytes to skip when using the GAS .p2align command.])])
2030 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2033 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2034 [Define if your assembler supports .literal16.])])
2036 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2038 [conftest_label1: .word 0
2040 conftest_label2: .word 0
2042 [if test x$gcc_cv_nm != x; then
2043 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2044 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2045 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2047 else gcc_cv_as_subsection_m1=yes
2049 rm -f conftest.nm1 conftest.nm2
2051 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2052 [Define if your assembler supports .subsection and .subsection -1 starts
2053 emitting at the beginning of your section.])])
2055 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2058 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2060 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2062 [ .weakref foobar, barfnot],,
2063 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2065 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2068 .NSUBSPA $CODE$,COMDAT],,
2069 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2071 # .hidden needs to be supported in both the assembler and the linker,
2072 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2073 # This is irritatingly difficult to feature test for; we have to check the
2074 # date string after the version number. If we've got an in-tree
2075 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2077 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2078 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2083 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2084 [if test $in_tree_ld = yes ; then
2086 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2087 && test $in_tree_ld_is_elf = yes; then
2088 gcc_cv_ld_hidden=yes
2091 gcc_cv_ld_hidden=yes
2092 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2093 if echo "$ld_ver" | grep GNU > /dev/null; then
2095 ld_vers=`echo $ld_ver | sed -n \
2096 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2097 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2098 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2099 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2100 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2101 if test 0"$ld_date" -lt 20020404; then
2102 if test -n "$ld_date"; then
2103 # If there was date string, but was earlier than 2002-04-04, fail
2105 elif test -z "$ld_vers"; then
2106 # If there was no date string nor ld version number, something is wrong
2109 test -z "$ld_vers_patch" && ld_vers_patch=0
2110 if test "$ld_vers_major" -lt 2; then
2112 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2113 gcc_cv_ld_hidden="no"
2114 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2122 hppa64*-*-hpux* | ia64*-*-hpux*)
2123 gcc_cv_ld_hidden=yes
2131 libgcc_visibility=no
2132 AC_SUBST(libgcc_visibility)
2133 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2134 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2135 libgcc_visibility=yes
2136 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2137 [Define if your assembler and linker support .hidden.])
2140 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2141 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2149 [# GAS versions before 2.11 do not support uleb128,
2150 # despite appearing to.
2151 # ??? There exists an elf-specific test that will crash
2152 # the assembler. Perhaps it's better to figure out whether
2153 # arbitrary sections are supported and try the test.
2154 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2155 if echo "$as_ver" | grep GNU > /dev/null; then
2157 as_vers=`echo $as_ver | sed -n \
2158 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2159 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2160 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2162 if test $as_major -eq 2 && test $as_minor -lt 11
2164 else gcc_cv_as_leb128=yes
2167 [AC_DEFINE(HAVE_AS_LEB128, 1,
2168 [Define if your assembler supports .sleb128 and .uleb128.])])
2170 # GAS versions up to and including 2.11.0 may mis-optimize
2172 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2180 .section .eh_frame,"aw",@progbits
2182 .4byte .LECIE1-.LSCIE1
2196 .4byte .LEFDE1-.LASFDE1
2198 .4byte .LASFDE1-__FRAME_BEGIN__
2206 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2207 cat > conftest.lit <<EOF
2208 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2209 0010 01000000 12000000 18000000 00000000 ................
2210 0020 08000000 04080000 0044 .........D @&t@
2212 cat > conftest.big <<EOF
2213 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2214 0010 00000001 00000012 00000018 00000000 ................
2215 0020 00000008 04000000 0844 .........D @&t@
2217 # If the assembler didn't choke, and we can objdump,
2218 # and we got the correct data, then succeed.
2219 # The text in the here-document typically retains its unix-style line
2220 # endings, while the output of objdump will use host line endings.
2221 # Therefore, use diff -b for the comparisons.
2222 if test x$gcc_cv_objdump != x \
2223 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2224 | tail -3 > conftest.got \
2225 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2226 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2228 gcc_cv_as_eh_frame=yes
2229 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2230 gcc_cv_as_eh_frame=buggy
2232 # Uh oh, what do we do now?
2233 gcc_cv_as_eh_frame=no
2236 if test $gcc_cv_as_eh_frame = buggy; then
2237 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2238 [Define if your assembler mis-optimizes .eh_frame data.])
2241 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2242 [elf,2,12,0], [--fatal-warnings],
2243 [.section .rodata.str, "aMS", @progbits, 1])
2244 if test $gcc_cv_as_shf_merge = no; then
2245 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2246 [elf,2,12,0], [--fatal-warnings],
2247 [.section .rodata.str, "aMS", %progbits, 1])
2249 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2250 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2251 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2253 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2254 [elf,2,16,0], [--fatal-warnings],
2255 [.section .text,"axG",@progbits,.foo,comdat])
2256 if test $gcc_cv_as_comdat_group = yes; then
2257 gcc_cv_as_comdat_group_percent=no
2259 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2260 [elf,2,16,0], [--fatal-warnings],
2261 [.section .text,"axG",%progbits,.foo,comdat])
2263 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2265 if test 0"$ld_date" -lt 20050308; then
2266 if test -n "$ld_date"; then
2267 # If there was date string, but was earlier than 2005-03-08, fail
2269 elif test "$ld_vers_major" -lt 2; then
2271 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2276 # assume linkers other than GNU ld don't support COMDAT group
2279 if test $comdat_group = no; then
2280 gcc_cv_as_comdat_group=no
2281 gcc_cv_as_comdat_group_percent=no
2283 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2284 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2285 [Define 0/1 if your assembler and linker support COMDAT groups.])
2287 # Thread-local storage - the check is heavily parametrized.
2296 .section ".tdata","awT",@progbits
2299 ldq $27,__tls_get_addr($29) !literal!1
2300 lda $16,foo($29) !tlsgd!1
2301 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2302 ldq $27,__tls_get_addr($29) !literal!2
2303 lda $16,foo($29) !tlsldm!2
2304 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2305 ldq $1,foo($29) !gotdtprel
2306 ldah $2,foo($29) !dtprelhi
2307 lda $3,foo($2) !dtprello
2308 lda $4,foo($29) !dtprel
2309 ldq $1,foo($29) !gottprel
2310 ldah $2,foo($29) !tprelhi
2311 lda $3,foo($2) !tprello
2312 lda $4,foo($29) !tprel'
2315 tls_as_opt=--fatal-warnings
2319 .section ".tdata","awT",@progbits
2331 .section ".tdata","awT",@progbits
2335 addil LT%foo-$tls_gdidx$,gp
2336 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2339 addil LT%foo-$tls_ldidx$,gp
2341 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2342 addil LR%foo-$tls_dtpoff$,%ret0
2343 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2345 addil LT%foo-$tls_ieoff$,gp
2346 ldw RT%foo-$tls_ieoff$(%r1),%t2
2349 addil LR%foo-$tls_leoff$,%t1
2350 ldo RR%foo-$tls_leoff$(%r1),%t2'
2353 tls_as_opt=--fatal-warnings
2357 .section ".tdata","awT",%progbits
2370 .section ".tdata","awT",@progbits
2374 leal foo@TLSGD(,%ebx,1), %eax
2375 leal foo@TLSLDM(%ebx), %eax
2376 leal foo@DTPOFF(%eax), %edx
2377 movl foo@GOTTPOFF(%ebx), %eax
2378 subl foo@GOTTPOFF(%ebx), %eax
2379 addl foo@GOTNTPOFF(%ebx), %eax
2380 movl foo@INDNTPOFF, %eax
2381 movl $foo@TPOFF, %eax
2382 subl $foo@TPOFF, %eax
2383 leal foo@NTPOFF(%ecx), %eax'
2386 tls_as_opt=--fatal-warnings
2390 .section ".tdata","awT",@progbits
2394 leaq foo@TLSGD(%rip), %rdi
2395 leaq foo@TLSLD(%rip), %rdi
2396 leaq foo@DTPOFF(%rax), %rdx
2397 movq foo@GOTTPOFF(%rip), %rax
2398 movq $foo@TPOFF, %rax'
2401 tls_as_opt=--fatal-warnings
2405 .section ".tdata","awT",@progbits
2408 addl r16 = @ltoff(@dtpmod(foo#)), gp
2409 addl r17 = @ltoff(@dtprel(foo#)), gp
2410 addl r18 = @ltoff(@tprel(foo#)), gp
2411 addl r19 = @dtprel(foo#), gp
2412 adds r21 = @dtprel(foo#), r13
2413 movl r23 = @dtprel(foo#)
2414 addl r20 = @tprel(foo#), gp
2415 adds r22 = @tprel(foo#), r13
2416 movl r24 = @tprel(foo#)'
2419 tls_as_opt=--fatal-warnings
2423 .section .tdata,"awT",@progbits
2427 addiu $4, $28, %tlsgd(x)
2428 addiu $4, $28, %tlsldm(x)
2429 lui $4, %dtprel_hi(x)
2430 addiu $4, $4, %dtprel_lo(x)
2431 lw $4, %gottprel(x)($28)
2432 lui $4, %tprel_hi(x)
2433 addiu $4, $4, %tprel_lo(x)'
2436 tls_as_opt='-32 --fatal-warnings'
2440 .section ".tdata","awT",@progbits
2448 addi 3,31,ld0@got@tlsgd
2450 addi 3,31,x1@got@tlsld
2453 addis 9,3,x2@dtprel@ha
2454 addi 9,9,x2@dtprel@l
2455 lwz 9,x3@got@tprel(31)
2458 addis 9,2,x2@tprel@ha
2459 addi 9,9,x2@tprel@l'
2462 tls_as_opt="-a32 --fatal-warnings"
2466 .section ".tdata","awT",@progbits
2474 addi 3,2,ld0@got@tlsgd
2480 addi 3,2,x1@got@tlsld
2486 addis 9,3,x2@dtprel@ha
2487 addi 9,9,x2@dtprel@l
2490 ld 9,x3@got@dtprel(2)
2496 tls_as_opt="-a64 --fatal-warnings"
2500 .section ".tdata","awT",@progbits
2509 l %r1,foo@GOTNTPOFF(%r12)
2510 l %r1,0(%r1):tls_load:foo
2511 bas %r14,0(%r1,%r13):tls_gdcall:foo
2512 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2515 tls_as_opt="-m31 --fatal-warnings"
2519 .section ".tdata","awT",@progbits
2527 lg %r1,foo@GOTNTPOFF(%r12)
2528 larl %r1,foo@INDNTPOFF
2529 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2530 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2533 tls_as_opt="-m64 -Aesame --fatal-warnings"
2535 sh-*-* | sh[34]-*-*)
2537 .section ".tdata","awT",@progbits
2547 tls_as_opt=--fatal-warnings
2551 sparc*-sun-solaris2.[56789]*)
2552 # TLS was introduced in the Solaris 9 4/04 release but
2553 # we do not enable it by default on Solaris 9 either.
2554 if test "x$enable_tls" = xyes ; then
2560 sparc*-sun-solaris2.*)
2567 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2569 .section ".tdata",#alloc,#write,#tls
2572 sethi %tgd_hi22(foo), %o0
2573 add %o0, %tgd_lo10(foo), %o1
2574 add %l7, %o1, %o0, %tgd_add(foo)
2575 call __tls_get_addr, %tgd_call(foo)
2576 sethi %tldm_hi22(foo), %l1
2577 add %l1, %tldm_lo10(foo), %l2
2578 add %l7, %l2, %o0, %tldm_add(foo)
2579 call __tls_get_addr, %tldm_call(foo)
2580 sethi %tldo_hix22(foo), %l3
2581 xor %l3, %tldo_lox10(foo), %l4
2582 add %o0, %l4, %l5, %tldo_add(foo)
2583 sethi %tie_hi22(foo), %o3
2584 add %o3, %tie_lo10(foo), %o3
2585 ld [%l7 + %o3], %o2, %tie_ld(foo)
2586 add %g7, %o2, %o4, %tie_add(foo)
2587 sethi %tle_hix22(foo), %l1
2588 xor %l1, %tle_lox10(foo), %o5
2589 ld [%g7 + %o5], %o1'
2594 .section ".tdata","awT",@progbits
2597 sethi %tgd_hi22(foo), %o0
2598 add %o0, %tgd_lo10(foo), %o1
2599 add %l7, %o1, %o0, %tgd_add(foo)
2600 call __tls_get_addr, %tgd_call(foo)
2601 sethi %tldm_hi22(foo), %l1
2602 add %l1, %tldm_lo10(foo), %l2
2603 add %l7, %l2, %o0, %tldm_add(foo)
2604 call __tls_get_addr, %tldm_call(foo)
2605 sethi %tldo_hix22(foo), %l3
2606 xor %l3, %tldo_lox10(foo), %l4
2607 add %o0, %l4, %l5, %tldo_add(foo)
2608 sethi %tie_hi22(foo), %o3
2609 add %o3, %tie_lo10(foo), %o3
2610 ld [%l7 + %o3], %o2, %tie_ld(foo)
2611 add %g7, %o2, %o4, %tie_add(foo)
2612 sethi %tle_hix22(foo), %l1
2613 xor %l1, %tle_lox10(foo), %o5
2614 ld [%g7 + %o5], %o1'
2617 tls_as_opt="-32 --fatal-warnings"
2623 if test "x$enable_tls" = xno ; then
2624 : # TLS explicitly disabled.
2625 elif test "x$enable_tls" = xyes ; then
2626 set_have_as_tls=yes # TLS explicitly enabled.
2627 elif test -z "$tls_first_major"; then
2628 : # If we don't have a check, assume no support.
2630 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2631 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2632 [set_have_as_tls=yes])
2634 if test $set_have_as_tls = yes ; then
2635 AC_DEFINE(HAVE_AS_TLS, 1,
2636 [Define if your assembler supports thread-local storage.])
2639 # Target-specific assembler checks.
2641 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2642 gcc_cv_ld_static_dynamic=no
2643 if test $in_tree_ld = yes ; then
2644 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2645 gcc_cv_ld_static_dynamic=yes
2647 elif test x$gcc_cv_ld != x; then
2648 # Check if linker supports -Bstatic/-Bdynamic option
2649 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2650 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2651 gcc_cv_ld_static_dynamic=yes
2654 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2655 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2656 [Define if your linker supports -Bstatic/-Bdynamic option.])
2658 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2660 if test x"$demangler_in_ld" = xyes; then
2661 AC_MSG_CHECKING(linker --demangle support)
2662 gcc_cv_ld_demangle=no
2663 if test $in_tree_ld = yes; then
2664 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2665 gcc_cv_ld_demangle=yes
2667 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2668 # Check if the GNU linker supports --demangle option
2669 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2670 gcc_cv_ld_demangle=yes
2673 if test x"$gcc_cv_ld_demangle" = xyes; then
2674 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2675 [Define if your linker supports --demangle option.])
2677 AC_MSG_RESULT($gcc_cv_ld_demangle)
2681 # All TARGET_ABI_OSF targets.
2682 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2683 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2684 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2687 extbl $3, $2, $3 !lituse_bytoff!1
2688 ldq $2, a($29) !literal!1
2689 ldq $4, b($29) !literal!2
2690 ldq_u $3, 0($2) !lituse_base!1
2691 ldq $27, f($29) !literal!5
2692 jsr $26, ($27), f !lituse_jsr!5
2693 ldah $29, 0($26) !gpdisp!3
2694 lda $0, c($29) !gprel
2695 ldah $1, d($29) !gprelhigh
2696 lda $1, d($1) !gprellow
2697 lda $29, 0($29) !gpdisp!3],,
2698 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2699 [Define if your assembler supports explicit relocations.])])
2700 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2701 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2704 ldq $27, a($29) !literal!1
2705 jsr $26, ($27), a !lituse_jsrdirect!1],,
2706 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2707 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2711 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2712 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2713 [-no-mul-bug-abort], [.text],,
2714 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2715 [Define if your assembler supports the -no-mul-bug-abort option.])])
2719 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2720 [.register %g2, #scratch],,
2721 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2722 [Define if your assembler supports .register.])])
2724 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2726 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2727 [Define if your assembler supports -relax option.])])
2729 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2730 gcc_cv_as_sparc_ua_pcrel,,
2738 .uaword %r_disp32(foo)],
2739 [if test x$gcc_cv_ld != x \
2740 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2741 gcc_cv_as_sparc_ua_pcrel=yes
2744 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2745 [Define if your assembler and linker support unaligned PC relative relocs.])
2747 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2748 gcc_cv_as_sparc_ua_pcrel_hidden,,
2753 .uaword %r_disp32(foo)
2754 .byte 0x32, 0x33, 0x34
2759 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2760 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2761 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2762 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2763 if $gcc_cv_objdump -R conftest 2> /dev/null \
2764 | grep 'DISP32' > /dev/null 2>&1; then
2767 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2771 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2772 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2773 ]) # unaligned pcrel relocs
2775 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2776 gcc_cv_as_sparc_offsetable_lo10,,
2779 or %g1, %lo(ab) + 12, %g1
2780 or %g1, %lo(ab + 12), %g1],
2781 [if test x$gcc_cv_objdump != x \
2782 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2783 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2784 gcc_cv_as_sparc_offsetable_lo10=yes
2786 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2787 [Define if your assembler supports offsetable %lo().])])
2791 i[34567]86-*-* | x86_64-*-*)
2794 cygwin* | pe | mingw32*)
2795 # Used for DWARF 2 in PE
2796 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2797 gcc_cv_as_ix86_pe_secrel32,
2803 [if test x$gcc_cv_ld != x \
2804 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2805 gcc_cv_as_ix86_pe_secrel32=yes
2808 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2809 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2813 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2814 gcc_cv_as_ix86_filds_fists,
2815 [2,9,0],, [filds mem; fists mem],,
2816 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2817 [Define if your assembler uses the new HImode fild and fist notation.])])
2819 gcc_GAS_CHECK_FEATURE([cmov syntax],
2820 gcc_cv_as_ix86_cmov_sun_syntax,,,
2821 [cmovl.l %edx, %eax],,
2822 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2823 [Define if your assembler supports the Sun syntax for cmov.])])
2825 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2826 gcc_cv_as_ix86_ffreep,,,
2828 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2829 [Define if your assembler supports the ffreep mnemonic.])])
2831 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
2832 gcc_cv_as_ix86_sahf,,,
2834 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
2835 [Define if your assembler supports the sahf mnemonic.])])
2837 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2838 gcc_cv_as_ix86_diff_sect_delta,,,
2846 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2847 [Define if your assembler supports the subtraction of symbols in different sections.])])
2849 # This one is used unconditionally by i386.[ch]; it is to be defined
2850 # to 1 if the feature is present, 0 otherwise.
2851 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2852 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2858 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2859 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2860 [Define true if the assembler supports '.long foo@GOTOFF'.])
2864 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2865 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2867 addl r15 = @ltoffx(x#), gp
2869 ld8.mov r16 = [[r15]], x#],,
2870 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2871 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2877 *-*-aix*) conftest_s=' .machine "pwr5"
2881 gcc_GAS_CHECK_FEATURE([.machine directive support],
2882 gcc_cv_as_machine_directive,,,
2883 [ .machine ppc7400])
2884 if test x$gcc_cv_as_machine_directive != xyes; then
2885 echo "*** This target requires an assembler supporting \".machine\"" >&2
2886 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2887 test x$build = x$target && exit 1
2891 *) conftest_s=' .machine power4
2896 gcc_GAS_CHECK_FEATURE([mfcr field support],
2897 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2899 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2900 [Define if your assembler supports mfcr field.])])
2903 *-*-aix*) conftest_s=' .machine "pwr5"
2906 *) conftest_s=' .machine power5
2911 gcc_GAS_CHECK_FEATURE([popcntb support],
2912 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2914 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2915 [Define if your assembler supports popcntb field.])])
2918 *-*-aix*) conftest_s=' .machine "pwr5x"
2921 *) conftest_s=' .machine power5
2926 gcc_GAS_CHECK_FEATURE([fp round support],
2927 gcc_cv_as_powerpc_fprnd, [2,17,0],,
2929 [AC_DEFINE(HAVE_AS_FPRND, 1,
2930 [Define if your assembler supports fprnd.])])
2933 *-*-aix*) conftest_s=' .machine "pwr6"
2936 *) conftest_s=' .machine power6
2941 gcc_GAS_CHECK_FEATURE([move fp gpr support],
2942 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
2944 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
2945 [Define if your assembler supports mffgpr and mftgpr.])])
2948 *-*-aix*) conftest_s=' .csect .text[[PR]]
2950 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2954 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2955 *) conftest_s=' .text
2957 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2960 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2961 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2963 [AC_DEFINE(HAVE_AS_REL16, 1,
2964 [Define if your assembler supports R_PPC_REL16 relocs.])])
2967 *-*-aix*) conftest_s=' .machine "pwr6"
2970 *) conftest_s=' .machine power6
2975 gcc_GAS_CHECK_FEATURE([compare bytes support],
2976 gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
2978 [AC_DEFINE(HAVE_AS_CMPB, 1,
2979 [Define if your assembler supports cmpb.])])
2982 *-*-aix*) conftest_s=' .machine "pwr6"
2985 *) conftest_s=' .machine power6
2990 gcc_GAS_CHECK_FEATURE([decimal float support],
2991 gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
2993 [AC_DEFINE(HAVE_AS_DFP, 1,
2994 [Define if your assembler supports DFP instructions.])])
2996 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
2997 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
2998 [.gnu_attribute 4,1],,
2999 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3000 [Define if your assembler supports .gnu_attribute.])])
3004 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3005 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3006 [ lw $4,%gp_rel(foo)($4)],,
3007 [if test x$target_cpu_default = x
3008 then target_cpu_default=MASK_EXPLICIT_RELOCS
3009 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3011 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3012 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3013 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3014 [Define if the assembler understands -mno-shared.])])
3016 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3017 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3018 [.gnu_attribute 4,1],,
3019 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3020 [Define if your assembler supports .gnu_attribute.])])
3022 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3023 gcc_cv_as_mips_dtprelword, [2,18,0],,
3024 [.section .tdata,"awT",@progbits
3028 .dtprelword x+0x8000],,
3029 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3030 [Define if your assembler supports .dtprelword.])])
3034 # Mips and HP-UX need the GNU assembler.
3035 # Linux on IA64 might be able to use the Intel assembler.
3038 mips*-*-* | *-*-hpux* )
3039 if test x$gas_flag = xyes \
3040 || test x"$host" != x"$build" \
3041 || test ! -x "$gcc_cv_as" \
3042 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3045 echo "*** This configuration requires the GNU assembler" >&2
3051 # ??? Not all targets support dwarf2 debug_line, even within a version
3052 # of gas. Moreover, we need to emit a valid instruction to trigger any
3053 # info to the output file. So, as supported targets are added to gas 2.11,
3054 # add some instruction here to (also) show we expect this might work.
3055 # ??? Once 2.11 is released, probably need to add first known working
3056 # version to the per-target configury.
3058 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3059 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
3060 | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-* | spu-*-*)
3063 ia64*-*-* | s390*-*-*)
3070 if test x"$insn" != x; then
3072 .file 1 \"conftest.s\"
3075 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3076 gcc_cv_as_dwarf2_debug_line,
3077 [elf,2,11,0],, [$conftest_s],
3078 [if test x$gcc_cv_objdump != x \
3079 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3080 | grep debug_line > /dev/null 2>&1; then
3081 gcc_cv_as_dwarf2_debug_line=yes
3084 # The .debug_line file table must be in the exact order that
3085 # we specified the files, since these indices are also used
3086 # by DW_AT_decl_file. Approximate this test by testing if
3087 # the assembler bitches if the same index is assigned twice.
3088 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3089 gcc_cv_as_dwarf2_file_buggy,,,
3093 if test $gcc_cv_as_dwarf2_debug_line = yes \
3094 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3095 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3096 [Define if your assembler supports dwarf2 .file/.loc directives,
3097 and preserves file table indices exactly as given.])
3100 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3101 gcc_cv_as_gdwarf2_flag,
3102 [elf,2,11,0], [--gdwarf2], [$insn],,
3103 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3104 [Define if your assembler supports the --gdwarf2 option.])])
3106 gcc_GAS_CHECK_FEATURE([--gstabs option],
3107 gcc_cv_as_gstabs_flag,
3108 [elf,2,11,0], [--gstabs], [$insn],
3109 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3110 # and warns about it, but still exits successfully. So check for
3112 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3114 else gcc_cv_as_gstabs_flag=yes
3116 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3117 [Define if your assembler supports the --gstabs option.])])
3119 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3120 gcc_cv_as_debug_prefix_map_flag,
3121 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3122 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3123 [Define if your assembler supports the --debug-prefix-map option.])])
3126 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3127 [gcc_cv_as_line_zero],
3128 [gcc_cv_as_line_zero=no
3129 if test $in_tree_gas = yes; then
3130 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3131 elif test "x$gcc_cv_as" != x; then
3132 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3133 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3134 test "x`cat conftest.out`" = x
3136 gcc_cv_as_line_zero=yes
3138 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3139 cat conftest.s >&AS_MESSAGE_LOG_FD
3140 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3141 cat conftest.out >&AS_MESSAGE_LOG_FD
3143 rm -f conftest.o conftest.s conftest.out
3145 if test "x$gcc_cv_as_line_zero" = xyes; then
3146 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3147 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3150 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3151 gcc_cv_ld_ro_rw_mix=unknown
3152 if test $in_tree_ld = yes ; then
3153 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3154 && test $in_tree_ld_is_elf = yes; then
3155 gcc_cv_ld_ro_rw_mix=read-write
3157 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3158 echo '.section myfoosect, "a"' > conftest1.s
3159 echo '.section myfoosect, "aw"' > conftest2.s
3160 echo '.byte 1' >> conftest2.s
3161 echo '.section myfoosect, "a"' > conftest3.s
3162 echo '.byte 0' >> conftest3.s
3163 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3164 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3165 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3166 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3167 conftest2.o conftest3.o > /dev/null 2>&1; then
3168 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3169 | sed -e '/myfoosect/!d' -e N`
3170 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3171 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3172 gcc_cv_ld_ro_rw_mix=read-only
3174 gcc_cv_ld_ro_rw_mix=read-write
3179 rm -f conftest.* conftest[123].*
3182 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3183 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3184 [Define if your linker links a mix of read-only
3185 and read-write sections into a read-write section.])
3187 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3189 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3190 gcc_cv_ld_eh_frame_hdr=no
3191 if test $in_tree_ld = yes ; then
3192 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3193 && test $in_tree_ld_is_elf = yes; then
3194 gcc_cv_ld_eh_frame_hdr=yes
3196 elif test x$gcc_cv_ld != x; then
3197 # Check if linker supports --eh-frame-hdr option
3198 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3199 gcc_cv_ld_eh_frame_hdr=yes
3202 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3203 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3204 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3205 [Define if your linker supports --eh-frame-hdr option.])
3207 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3209 AC_MSG_CHECKING(linker position independent executable support)
3211 if test $in_tree_ld = yes ; then
3212 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3213 && test $in_tree_ld_is_elf = yes; then
3216 elif test x$gcc_cv_ld != x; then
3217 # Check if linker supports -pie option
3218 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3222 if test x"$gcc_cv_ld_pie" = xyes; then
3223 AC_DEFINE(HAVE_LD_PIE, 1,
3224 [Define if your linker supports -pie option.])
3226 AC_MSG_RESULT($gcc_cv_ld_pie)
3228 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3229 gcc_cv_ld_eh_gc_sections=no
3230 if test $in_tree_ld = yes ; then
3231 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3232 && test $in_tree_ld_is_elf = yes; then
3233 gcc_cv_ld_eh_gc_sections=yes
3235 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3236 cat > conftest.s <<EOF
3239 .type _start, @function
3242 .size _start, .-_start
3243 .section .text.foo,"ax",@progbits
3244 .type foo, @function
3248 .section .gcc_except_table.foo,"a",@progbits
3251 .section .eh_frame,"a",@progbits
3254 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3255 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3256 | grep "gc-sections option ignored" > /dev/null; then
3257 gcc_cv_ld_eh_gc_sections=no
3258 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3259 gcc_cv_ld_eh_gc_sections=yes
3260 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3261 if test x$gcc_cv_as_comdat_group != xyes; then
3262 gcc_cv_ld_eh_gc_sections=no
3263 cat > conftest.s <<EOF
3266 .type _start, @function
3269 .size _start, .-_start
3270 .section .gnu.linkonce.t.foo,"ax",@progbits
3271 .type foo, @function
3275 .section .gcc_except_table.foo,"a",@progbits
3278 .section .eh_frame,"a",@progbits
3281 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3282 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3283 | grep "gc-sections option ignored" > /dev/null; then
3284 gcc_cv_ld_eh_gc_sections=no
3285 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3286 gcc_cv_ld_eh_gc_sections=yes
3292 rm -f conftest.s conftest.o conftest
3296 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3297 gcc_cv_ld_eh_gc_sections=no
3300 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3301 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3302 [Define if your linker supports garbage collection of
3303 sections in presence of EH frames.])
3305 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3311 AC_CACHE_CHECK(linker --as-needed support,
3312 gcc_cv_ld_as_needed,
3313 [gcc_cv_ld_as_needed=no
3314 if test $in_tree_ld = yes ; then
3315 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3316 && test $in_tree_ld_is_elf = yes; then
3317 gcc_cv_ld_as_needed=yes
3319 elif test x$gcc_cv_ld != x; then
3320 # Check if linker supports --as-needed and --no-as-needed options
3321 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3322 gcc_cv_ld_as_needed=yes
3326 if test x"$gcc_cv_ld_as_needed" = xyes; then
3327 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3328 [Define if your linker supports --as-needed and --no-as-needed options.])
3331 case "$target:$tm_file" in
3332 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3333 AC_CACHE_CHECK(linker support for omitting dot symbols,
3334 gcc_cv_ld_no_dot_syms,
3335 [gcc_cv_ld_no_dot_syms=no
3336 if test $in_tree_ld = yes ; then
3337 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3338 gcc_cv_ld_no_dot_syms=yes
3340 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3341 cat > conftest1.s <<EOF
3345 cat > conftest2.s <<EOF
3346 .section ".opd","aw"
3351 .quad .LEfoo,.TOC.@tocbase,0
3357 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3358 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3359 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3360 gcc_cv_ld_no_dot_syms=yes
3362 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3365 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3366 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3367 [Define if your PowerPC64 linker only needs function descriptor syms.])
3372 AC_CACHE_CHECK(linker --sysroot support,
3374 [gcc_cv_ld_sysroot=no
3375 if test $in_tree_ld = yes ; then
3376 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3377 gcc_cv_ld_sysroot=yes
3379 elif test x$gcc_cv_ld != x; then
3380 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3381 gcc_cv_ld_sysroot=yes
3384 if test x"$gcc_cv_ld_sysroot" = xyes; then
3385 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3386 [Define if your linker supports --sysroot.])
3389 if test x$with_sysroot = x && test x$host = x$target \
3390 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3391 && test "$prefix" != "NONE"; then
3392 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3393 [Define to PREFIX/include if cpp should also search that directory.])
3396 # Test for stack protector support in target C library.
3397 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3398 gcc_cv_libc_provides_ssp,
3399 [gcc_cv_libc_provides_ssp=no
3402 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3403 if test "x$with_sysroot" = x; then
3404 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3405 elif test "x$with_build_sysroot" != "x"; then
3406 glibc_header_dir="${with_build_sysroot}/usr/include"
3407 elif test "x$with_sysroot" = xyes; then
3408 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3410 glibc_header_dir="${with_sysroot}/usr/include"
3413 glibc_header_dir=/usr/include
3415 # glibc 2.4 and later provides __stack_chk_fail and
3416 # either __stack_chk_guard, or TLS access to stack guard canary.
3417 if test -f $glibc_header_dir/features.h \
3418 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3419 $glibc_header_dir/features.h > /dev/null; then
3420 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3421 $glibc_header_dir/features.h > /dev/null; then
3422 gcc_cv_libc_provides_ssp=yes
3423 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3424 $glibc_header_dir/features.h > /dev/null \
3425 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3426 $glibc_header_dir/features.h > /dev/null; then
3427 gcc_cv_libc_provides_ssp=yes
3428 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
3429 $glibc_header_dir/features.h > /dev/null && \
3430 test -f $glibc_header_dir/bits/uClibc_config.h && \
3431 $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
3432 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
3433 gcc_cv_libc_provides_ssp=yes
3438 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3439 [echo "no __stack_chk_fail on this target"])
3441 *) gcc_cv_libc_provides_ssp=no ;;
3444 if test x$gcc_cv_libc_provides_ssp = xyes; then
3445 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3446 [Define if your target C library provides stack protector support])
3449 # Check if TFmode long double should be used by default or not.
3450 # Some glibc targets used DFmode long double, but with glibc 2.4
3451 # and later they can use TFmode.
3453 powerpc*-*-linux* | \
3458 AC_ARG_WITH(long-double-128,
3459 [ --with-long-double-128 Use 128-bit long double by default.],
3460 gcc_cv_target_ldbl128="$with_long_double_128",
3461 [gcc_cv_target_ldbl128=no
3462 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3463 if test "x$with_sysroot" = x; then
3464 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3465 elif test "x$with_build_sysroot" != "x"; then
3466 glibc_header_dir="${with_build_sysroot}/usr/include"
3467 elif test "x$with_sysroot" = xyes; then
3468 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3470 glibc_header_dir="${with_sysroot}/usr/include"
3473 glibc_header_dir=/usr/include
3476 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3477 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3478 && gcc_cv_target_ldbl128=yes
3483 if test x$gcc_cv_target_ldbl128 = xyes; then
3484 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3485 [Define if TFmode long double should be the default])
3488 # Find out what GC implementation we want, or may, use.
3490 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3498 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3501 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3506 echo "Using $GGC for garbage collection."
3508 # Use the system's zlib library.
3510 zlibinc="-I\$(srcdir)/../zlib"
3511 AC_ARG_WITH(system-zlib,
3512 [ --with-system-zlib use installed libz],
3519 dnl Very limited version of automake's enable-maintainer-mode
3521 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3522 dnl maintainer-mode is disabled by default
3523 AC_ARG_ENABLE(maintainer-mode,
3524 [ --enable-maintainer-mode
3525 enable make rules and dependencies not useful
3526 (and sometimes confusing) to the casual installer],
3527 maintainer_mode=$enableval,
3530 AC_MSG_RESULT($maintainer_mode)
3532 if test "$maintainer_mode" = "yes"; then
3543 # Make empty files to contain the specs and options for each language.
3544 # Then add #include lines to for a compiler that has specs and/or options.
3550 # These (without "all_") are set in each config-lang.in.
3551 # `language' must be a single word so is spelled singularly.
3554 all_outputs='Makefile gccbug libada-mk'
3555 # List of language makefile fragments.
3557 # List of language subdirectory makefiles. Deprecated.
3559 # Additional files for gengtype
3560 all_gtfiles="$target_gtfiles"
3562 # These are the languages that are set in --enable-languages,
3563 # and are available in the GCC tree.
3564 all_selected_languages=
3566 # Add the language fragments.
3567 # Languages are added via two mechanisms. Some information must be
3568 # recorded in makefile variables, these are defined in config-lang.in.
3569 # We accumulate them and plug them into the main Makefile.
3570 # The other mechanism is a set of hooks for each of the main targets
3571 # like `clean', `install', etc.
3573 language_hooks="Make-hooks"
3575 for lang in ${srcdir}/*/config-lang.in
3578 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3580 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3581 if test "x$lang_alias" = x
3583 echo "$lang doesn't set \$language." 1>&2
3586 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3587 subdirs="$subdirs $subdir"
3589 # $gcc_subdir is where the gcc integration files are to be found
3590 # for a language, both for internal compiler purposes (compiler
3591 # sources implementing front-end to GCC tree converters), and for
3592 # build infrastructure purposes (Make-lang.in, etc.)
3594 # This will be <subdir> (relative to $srcdir) if a line like
3595 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
3596 # is found in <langdir>/config-lang.in, and will remain <langdir>
3599 # Except for the language alias (fetched above), the regular
3600 # "config-lang.in" contents are always retrieved from $gcc_subdir,
3601 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
3602 # only this and the language alias.
3604 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
3605 if [ "$gcc_subdir" = "" ]; then
3606 gcc_subdir="$subdir"
3609 case ",$enable_languages," in
3611 all_selected_languages="$all_selected_languages $lang_alias"
3612 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
3613 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
3625 . ${srcdir}/$gcc_subdir/config-lang.in
3626 if test "x$language" = x
3628 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
3633 case ",$enable_languages," in
3636 for i in $subdir_requires; do
3637 test -f "${srcdir}/$i/config-lang.in" && continue
3645 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
3646 if test -f $srcdir/$gcc_subdir/lang.opt; then
3647 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
3649 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
3650 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
3652 if test -f ${srcdir}/$gcc_subdir/Makefile.in
3653 then all_lang_makefiles="$gcc_subdir/Makefile"
3655 all_languages="$all_languages $language"
3656 all_compilers="$all_compilers $compilers"
3657 all_outputs="$all_outputs $outputs"
3658 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
3661 # Pick up gtfiles for c
3663 . ${srcdir}/c-config-lang.in
3664 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
3667 for language in $all_selected_languages
3669 check_languages="$check_languages check-$language"
3672 # We link each language in with a set of hooks, reached indirectly via
3673 # lang.${target}. Only do so for selected languages.
3677 target_list="all.cross start.encap rest.encap tags \
3678 install-common install-man install-info install-pdf dvi pdf \
3679 html uninstall info man srcextra srcman srcinfo \
3680 mostlyclean clean distclean maintainer-clean"
3682 for t in $target_list
3685 for lang in $all_selected_languages
3689 echo "lang.$t: $x" >> Make-hooks
3698 echo "dir ." > .gdbinit
3699 echo "dir ${srcdir}" >> .gdbinit
3700 if test x$gdb_needs_out_file_path = xyes
3702 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3704 if test "x$subdirs" != x; then
3707 echo "dir ${srcdir}/$s" >> .gdbinit
3710 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3712 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
3713 AC_SUBST(gcc_tooldir)
3716 # Find a directory in which to install a shared libgcc.
3718 AC_ARG_ENABLE(version-specific-runtime-libs,
3719 [ --enable-version-specific-runtime-libs
3720 specify that runtime libraries should be
3721 installed in a compiler-specific directory])
3723 AC_ARG_WITH(slibdir,
3724 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3725 slibdir="$with_slibdir",
3726 if test "${enable_version_specific_runtime_libs+set}" = set; then
3727 slibdir='$(libsubdir)'
3728 elif test "$host" != "$target"; then
3729 slibdir='$(build_tooldir)/lib'
3735 AC_ARG_WITH(datarootdir,
3736 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3737 datarootdir="\${prefix}/$with_datarootdir",
3738 datarootdir='$(prefix)/share')
3739 AC_SUBST(datarootdir)
3742 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3743 docdir="\${prefix}/$with_docdir",
3744 docdir='$(datarootdir)')
3747 AC_ARG_WITH(htmldir,
3748 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3749 htmldir="\${prefix}/$with_htmldir",
3750 htmldir='$(docdir)')
3753 # Substitute configuration variables
3756 AC_SUBST(all_compilers)
3757 AC_SUBST(all_gtfiles)
3758 AC_SUBST(all_lang_makefrags)
3759 AC_SUBST(all_lang_makefiles)
3760 AC_SUBST(all_languages)
3761 AC_SUBST(all_selected_languages)
3762 AC_SUBST(build_exeext)
3763 AC_SUBST(build_install_headers_dir)
3764 AC_SUBST(build_xm_file_list)
3765 AC_SUBST(build_xm_include_list)
3766 AC_SUBST(build_xm_defines)
3767 AC_SUBST(build_file_translate)
3768 AC_SUBST(check_languages)
3769 AC_SUBST(cpp_install_dir)
3770 AC_SUBST(xmake_file)
3771 AC_SUBST(tmake_file)
3772 AC_SUBST(extra_gcc_objs)
3773 AC_SUBST(extra_headers_list)
3774 AC_SUBST(extra_objs)
3775 AC_SUBST(extra_parts)
3776 AC_SUBST(extra_passes)
3777 AC_SUBST(extra_programs)
3778 AC_SUBST(float_h_file)
3779 AC_SUBST(gcc_config_arguments)
3780 AC_SUBST(gcc_gxx_include_dir)
3781 AC_SUBST(host_exeext)
3782 AC_SUBST(host_xm_file_list)
3783 AC_SUBST(host_xm_include_list)
3784 AC_SUBST(host_xm_defines)
3785 AC_SUBST(out_host_hook_obj)
3787 AC_SUBST(lang_opt_files)
3788 AC_SUBST(lang_specs_files)
3789 AC_SUBST(lang_tree_files)
3790 AC_SUBST(local_prefix)
3792 AC_SUBST(objc_boehm_gc)
3794 AC_SUBST(out_object_file)
3795 AC_SUBST(thread_file)
3796 AC_SUBST(tm_file_list)
3797 AC_SUBST(tm_include_list)
3798 AC_SUBST(tm_defines)
3799 AC_SUBST(tm_p_file_list)
3800 AC_SUBST(tm_p_include_list)
3801 AC_SUBST(xm_file_list)
3802 AC_SUBST(xm_include_list)
3803 AC_SUBST(xm_defines)
3804 AC_SUBST(c_target_objs)
3805 AC_SUBST(cxx_target_objs)
3806 AC_SUBST(target_cpu_default)
3808 AC_SUBST_FILE(language_hooks)
3811 if test x${build} = x${host} ; then
3812 if test x${host} = x${target} ; then
3813 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3815 echo "Links are now set up to build a cross-compiler" 1>&2
3816 echo " from ${host} to ${target}." 1>&2
3819 if test x${host} = x${target} ; then
3820 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3821 echo " for ${target}." 1>&2
3823 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3824 echo " from ${host} to ${target}." 1>&2
3828 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3829 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3831 # Configure the subdirectories
3832 # AC_CONFIG_SUBDIRS($subdirs)
3834 # Create the Makefile
3835 # and configure language subdirectories
3836 AC_CONFIG_FILES($all_outputs)
3838 AC_CONFIG_COMMANDS([default],
3840 case ${CONFIG_HEADERS} in
3841 *auto-host.h:config.in*)
3844 # Make sure all the subdirs exist.
3845 for d in $subdirs doc build
3847 test -d $d || mkdir $d
3850 [subdirs='$subdirs'])