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 ($DEFAULT_ASSEMBLER - GNU as)])
267 # If a non-executable a.out is present (e.g. created by GNU as above even if
268 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
269 # file, even when creating an executable, so an execution test fails.
270 # Remove possible default executable files to avoid this.
272 # FIXME: This really belongs into AC_PROG_CC and can be removed once
273 # Autoconf includes it.
274 rm -f a.out a.exe b.out
276 # Find the native compiler
279 # autoconf is lame and doesn't give us any substitution variable for this.
280 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
281 NO_MINUS_C_MINUS_O=yes
283 OUTPUT_OPTION='-o $@'
285 AC_SUBST(NO_MINUS_C_MINUS_O)
286 AC_SUBST(OUTPUT_OPTION)
288 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
289 # optimizations to be activated explicitly by the toplevel.
292 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
296 # -------------------------
297 # Check C compiler features
298 # -------------------------
300 AC_USE_SYSTEM_EXTENSIONS
304 # sizeof(char) is 1 by definition.
305 AC_CHECK_SIZEOF(void *)
306 AC_CHECK_SIZEOF(short)
308 AC_CHECK_SIZEOF(long)
309 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
310 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
312 # ---------------------
313 # Warnings and checking
314 # ---------------------
316 # Check $CC warning features (if it's GCC).
317 # We want to use -pedantic, but we don't want warnings about
321 # So, we only use -pedantic if we can disable those warnings.
323 ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings -Wstrict-prototypes \
324 -Wmissing-prototypes], [loose_warn])
325 ACX_PROG_CC_WARNING_OPTS([-Wc++-compat], [cxx_compat_warn])
326 ACX_PROG_CC_WARNING_OPTS([-Wold-style-definition \
327 -Wmissing-format-attribute], [strict_warn])
328 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long -Wno-variadic-macros \
329 -Wno-overlength-strings], [strict_warn])
330 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
332 # The above macros do nothing if the compiler is not GCC. However, the
333 # Makefile has more goo to add other flags, so this variabl is used to
334 # enables warnings only for GCC.
336 if test "x$GCC" = "xyes"; then
337 warn_cflags='$(GCC_WARN_CFLAGS)'
339 AC_SUBST(warn_cflags)
341 # Enable expensive internal checks
343 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
347 AC_ARG_ENABLE(checking,
348 [ --enable-checking[=LIST]
349 enable expensive run-time checks. With LIST,
350 enable only specific categories of checks.
351 Categories are: yes,no,all,none,release.
352 Flags are: assert,df,fold,gc,gcac,misc,
353 rtlflag,rtl,runtime,tree,valgrind,types.],
354 [ac_checking_flags="${enableval}"],[
355 # Determine the default checks.
356 if test x$is_release = x ; then
357 ac_checking_flags=yes
359 ac_checking_flags=release
361 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
362 for check in release $ac_checking_flags
365 # these set all the flags to specific states
366 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
367 ac_fold_checking= ; ac_gc_checking=1 ;
368 ac_gc_always_collect= ; ac_rtl_checking= ;
369 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
370 ac_tree_checking=1 ; ac_valgrind_checking= ;
371 ac_types_checking=1 ;;
372 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
373 ac_fold_checking= ; ac_gc_checking= ;
374 ac_gc_always_collect= ; ac_rtl_checking= ;
375 ac_rtlflag_checking= ; ac_runtime_checking= ;
376 ac_tree_checking= ; ac_valgrind_checking= ;
377 ac_types_checking= ;;
378 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
379 ac_fold_checking=1 ; ac_gc_checking=1 ;
380 ac_gc_always_collect=1 ; ac_rtl_checking=1 ;
381 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
382 ac_tree_checking=1 ; ac_valgrind_checking= ;
383 ac_types_checking=1 ;;
384 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
385 ac_fold_checking= ; ac_gc_checking= ;
386 ac_gc_always_collect= ; ac_rtl_checking= ;
387 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
388 ac_tree_checking= ; ac_valgrind_checking= ;
389 ac_types_checking= ;;
390 # these enable particular checks
391 assert) ac_assert_checking=1 ;;
392 df) ac_df_checking=1 ;;
393 fold) ac_fold_checking=1 ;;
394 gc) ac_gc_checking=1 ;;
395 gcac) ac_gc_always_collect=1 ;;
396 misc) ac_checking=1 ;;
397 rtl) ac_rtl_checking=1 ;;
398 rtlflag) ac_rtlflag_checking=1 ;;
399 runtime) ac_runtime_checking=1 ;;
400 tree) ac_tree_checking=1 ;;
401 types) ac_types_checking=1 ;;
402 valgrind) ac_valgrind_checking=1 ;;
403 *) AC_MSG_ERROR(unknown check category $check) ;;
409 if test x$ac_checking != x ; then
410 AC_DEFINE(ENABLE_CHECKING, 1,
411 [Define if you want more run-time sanity checks. This one gets a grab
412 bag of miscellaneous but relatively cheap checks.])
413 nocommon_flag=-fno-common
415 AC_SUBST(nocommon_flag)
416 if test x$ac_df_checking != x ; then
417 AC_DEFINE(ENABLE_DF_CHECKING, 1,
418 [Define if you want more run-time sanity checks for dataflow.])
420 if test x$ac_assert_checking != x ; then
421 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
422 [Define if you want assertions enabled. This is a cheap check.])
424 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
425 if test x$ac_runtime_checking != x ; then
426 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
427 [Define if you want runtime assertions enabled. This is a cheap check.])
429 if test x$ac_tree_checking != x ; then
430 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
431 [Define if you want all operations on trees (the basic data
432 structure of the front ends) to be checked for dynamic type safety
433 at runtime. This is moderately expensive. The tree browser debugging
434 routines will also be enabled by this option.
436 TREEBROWSER=tree-browser.o
438 if test x$ac_types_checking != x ; then
439 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
440 [Define if you want all gimple types to be verified after gimplifiation.
444 AC_SUBST(TREEBROWSER)
445 if test x$ac_rtl_checking != x ; then
446 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
447 [Define if you want all operations on RTL (the basic data structure
448 of the optimizer and back end) to be checked for dynamic type safety
449 at runtime. This is quite expensive.])
451 if test x$ac_rtlflag_checking != x ; then
452 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
453 [Define if you want RTL flag accesses to be checked against the RTL
454 codes that are supported for each access macro. This is relatively
457 if test x$ac_gc_checking != x ; then
458 AC_DEFINE(ENABLE_GC_CHECKING, 1,
459 [Define if you want the garbage collector to do object poisoning and
460 other memory allocation checks. This is quite expensive.])
462 if test x$ac_gc_always_collect != x ; then
463 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
464 [Define if you want the garbage collector to operate in maximally
465 paranoid mode, validating the entire heap and collecting garbage at
466 every opportunity. This is extremely expensive.])
468 if test x$ac_fold_checking != x ; then
469 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
470 [Define if you want fold checked that it never destructs its argument.
471 This is quite expensive.])
473 valgrind_path_defines=
476 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
477 dnl # an if statement. This was the source of very frustrating bugs
478 dnl # in converting to autoconf 2.5x!
479 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
481 if test x$ac_valgrind_checking != x ; then
482 # It is certainly possible that there's valgrind but no valgrind.h.
483 # GCC relies on making annotations so we must have both.
484 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
485 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
486 [[#include <valgrind/memcheck.h>
487 #ifndef VALGRIND_DISCARD
488 #error VALGRIND_DISCARD not defined
490 [gcc_cv_header_valgrind_memcheck_h=yes],
491 [gcc_cv_header_valgrind_memcheck_h=no])
492 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
493 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
494 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
495 [[#include <memcheck.h>
496 #ifndef VALGRIND_DISCARD
497 #error VALGRIND_DISCARD not defined
499 [gcc_cv_header_memcheck_h=yes],
500 [gcc_cv_header_memcheck_h=no])
501 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
502 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
503 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
504 if test "x$valgrind_path" = "x" \
505 || (test $have_valgrind_h = no \
506 && test $gcc_cv_header_memcheck_h = no \
507 && test $gcc_cv_header_valgrind_memcheck_h = no); then
508 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
510 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
511 valgrind_command="$valgrind_path -q"
512 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
513 [Define if you want to run subprograms and generated programs
514 through valgrind (a memory checker). This is extremely expensive.])
515 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
516 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
517 [Define if valgrind's valgrind/memcheck.h header is installed.])
519 if test $gcc_cv_header_memcheck_h = yes; then
520 AC_DEFINE(HAVE_MEMCHECK_H, 1,
521 [Define if valgrind's memcheck.h header is installed.])
524 AC_SUBST(valgrind_path_defines)
525 AC_SUBST(valgrind_command)
527 # Enable code coverage collection
528 AC_ARG_ENABLE(coverage,
529 [ --enable-coverage[=LEVEL]
530 enable compiler's code coverage collection.
531 Use to measure compiler performance and locate
532 unused parts of the compiler. With LEVEL, specify
533 optimization. Values are opt, noopt,
535 [case "${enableval}" in
537 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
540 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
543 # a.k.a. --disable-coverage
547 AC_MSG_ERROR(unknown coverage setting $enableval)
551 AC_SUBST(coverage_flags)
553 AC_ARG_ENABLE(gather-detailed-mem-stats,
554 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
555 [enable_gather_detailed_mem_stats=no])
556 if test x$enable_gather_detailed_mem_stats = xyes ; then
557 AC_DEFINE(GATHER_STATISTICS, 1,
558 [Define to enable detailed memory allocation stats gathering.])
561 # -------------------------------
562 # Miscenalleous configure options
563 # -------------------------------
567 [ --with-stabs arrange to use stabs instead of host debug format],
571 # Determine whether or not multilibs are enabled.
572 AC_ARG_ENABLE(multilib,
573 [ --enable-multilib enable library support for multiple ABIs],
574 [], [enable_multilib=yes])
575 AC_SUBST(enable_multilib)
577 # Enable __cxa_atexit for C++.
578 AC_ARG_ENABLE(__cxa_atexit,
579 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
582 # Enable C extension for decimal float if target supports it.
583 AC_ARG_ENABLE(decimal-float,
584 [ --enable-decimal-float={no,yes,bid,dpd}
585 enable decimal float extension to C. Selecting 'bid'
586 or 'dpd' choses which decimal floating point format
589 case $enable_decimal_float in
590 yes | no | bid | dpd) ;;
591 *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
592 Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
597 powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
598 enable_decimal_float=yes
601 AC_MSG_WARN(decimal float is not supported for this target, ignored)
602 enable_decimal_float=no
607 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
608 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
609 [Define to 1 to enable decimal float extension to C.])
611 # x86's use BID format instead of DPD
612 case x$enable_decimal_float in
615 i?86*-*-linux* | x86_64*-*-linux*)
616 enable_decimal_float=bid
619 enable_decimal_float=dpd
624 # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
625 # dependency on libdecnumber.
626 enable_decimal_float=dpd
629 AC_SUBST(enable_decimal_float)
631 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
632 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
633 [Define to 1 to specify that we are using the BID decimal floating
634 point format instead of DPD])
636 # Enable C extension for fixed-point arithmetic.
637 AC_ARG_ENABLE(fixed-point,
638 [ --enable-fixed-point enable fixed-point arithmetic extension to C],
646 AC_MSG_WARN(fixed-point is not supported on IRIX, ignored)
647 enable_fixed_point=no
650 enable_fixed_point=yes
655 AC_MSG_WARN(fixed-point is not supported for this target, ignored)
656 enable_fixed_point=no
660 AC_SUBST(enable_fixed_point)
662 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
663 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
664 [Define to 1 to enable fixed-point arithmetic extension to C.])
667 # Pass with no value to take the default
668 # Pass with a value to specify a thread package
669 AC_ARG_ENABLE(threads,
670 [ --enable-threads enable thread usage for target GCC
671 --enable-threads=LIB use LIB thread package for target GCC],,
675 [ --enable-tls enable or disable generation of tls code
676 overriding the assembler check for tls support],
680 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
681 Valid choices are 'yes' and 'no'.]) ;;
685 AC_ARG_ENABLE(objc-gc,
686 [ --enable-objc-gc enable the use of Boehm's garbage collector with
687 the GNU Objective-C runtime],
688 if test x$enable_objc_gc = xno; then
696 [ --with-dwarf2 force the default debug format to be DWARF 2],
697 dwarf2="$with_dwarf2",
700 AC_ARG_ENABLE(shared,
701 [ --disable-shared don't provide a shared libgcc],
703 case $enable_shared in
707 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
708 for pkg in $enableval; do
709 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
716 ], [enable_shared=yes])
717 AC_SUBST(enable_shared)
719 AC_ARG_WITH(build-sysroot,
720 [ --with-build-sysroot=sysroot
721 use sysroot as the system root during the build])
724 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
726 case ${with_sysroot} in
727 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
728 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
731 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
732 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
734 if test "x$prefix" = xNONE; then
735 test_prefix=/usr/local
739 if test "x$exec_prefix" = xNONE; then
740 test_exec_prefix=$test_prefix
742 test_exec_prefix=$exec_prefix
744 case ${TARGET_SYSTEM_ROOT} in
745 "${test_prefix}"|"${test_prefix}/"*|\
746 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
747 '${prefix}'|'${prefix}/'*|\
748 '${exec_prefix}'|'${exec_prefix}/'*)
749 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
750 TARGET_SYSTEM_ROOT_DEFINE="$t"
755 TARGET_SYSTEM_ROOT_DEFINE=
756 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
758 AC_SUBST(TARGET_SYSTEM_ROOT)
759 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
760 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
762 # Build with intermodule optimisations
763 AC_ARG_ENABLE(intermodule,
764 [ --enable-intermodule build the compiler in one step],
765 [case ${enable_intermodule} in
766 yes) onestep="-onestep";;
772 ACX_PKGVERSION([GCC])
773 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
775 # Sanity check enable_languages in case someone does not run the toplevel
776 # configure # script.
777 AC_ARG_ENABLE(languages,
778 [ --enable-languages=LIST specify which front-ends to build],
779 [case ,${enable_languages}, in
781 # go safe -- we cannot be much sure without the toplevel
783 # analysis of which target libs are present and usable
787 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
792 enable_languages=c,${enable_languages}
795 [enable_languages=c])
797 # Used by documentation targets
798 AC_SUBST(datarootdir)
802 # -------------------------
803 # Checks for other programs
804 # -------------------------
808 # Find some useful tools
810 # We need awk to create options.c and options.h.
811 # Bail out if it's missing.
813 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
821 # By default, the Darwin ranlib will not treat common symbols as
822 # definitions when building the archive table of contents. Other
823 # ranlibs do that; pass an option to the Darwin ranlib that makes
824 # it behave similarly.
830 AC_SUBST(ranlib_flags)
834 # See if cmp has --ignore-initial.
835 gcc_AC_PROG_CMP_IGNORE_INITIAL
837 # See if we have the mktemp command.
838 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
840 # See if makeinfo has been installed and is modern enough
841 # that we can use it.
842 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
843 [GNU texinfo.* \([0-9][0-9.]*\)],
844 [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
845 if test $gcc_cv_prog_makeinfo_modern = no; then
847 *** Makeinfo is missing or too old.
848 *** Info documentation will not be built.])
855 # Is pod2man recent enough to regenerate manpages?
856 AC_MSG_CHECKING([for recent Pod::Man])
857 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
859 GENERATED_MANPAGES=generated-manpages
864 AC_SUBST(GENERATED_MANPAGES)
866 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
869 dnl Don't use AC_PROG_LEX; we insist on flex.
870 dnl LEXLIB is not useful in gcc.
871 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
874 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
876 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
877 # check for build == host before using them.
880 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
881 && test -d ../binutils ; then
882 NM='$(objdir)/../binutils/nm-new'
884 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
888 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
889 && test -d ../binutils ; then
890 AR='$(objdir)/../binutils/ar'
892 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
896 # --------------------
897 # Checks for C headers
898 # --------------------
900 # Need to reject headers which give warnings, so that the -Werror bootstrap
901 # works later. *sigh* This needs to come before all header checks.
908 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
909 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
910 sys/resource.h sys/param.h sys/times.h sys/stat.h \
911 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
913 # Check for thread headers.
914 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
915 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
917 # These tests can't be done till we know if we have limits.h.
926 # These libraries may be used by collect2.
927 # We may need a special search path to get them linked.
928 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
930 for libs in '' -lld -lmld \
931 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
932 '-L/usr/lib/cmplrs/cc3.11 -lmld'
935 AC_TRY_LINK_FUNC(ldopen,
936 [gcc_cv_collect2_libs="$libs"; break])
939 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
940 case $gcc_cv_collect2_libs in
942 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
944 AC_SUBST(COLLECT2_LIBS)
946 # When building Ada code on Alpha, we need exc_resume which is usually in
947 # -lexc. So test for it.
950 AC_SEARCH_LIBS(exc_resume, exc)
953 AC_SUBST(GNAT_LIBEXC)
955 # Some systems put ldexp and frexp in libm instead of libc; assume
956 # they're both in the same place. jcf-dump needs them.
959 AC_SEARCH_LIBS(ldexp, m)
964 # Use <inttypes.h> only if it exists,
965 # doesn't clash with <sys/types.h>, and declares intmax_t.
966 AC_MSG_CHECKING(for inttypes.h)
967 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
968 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
969 [[#include <sys/types.h>
970 #include <inttypes.h>]],
971 [[intmax_t i = -1;]])],
972 [gcc_cv_header_inttypes_h=yes],
973 [gcc_cv_header_inttypes_h=no])])
974 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
975 if test $gcc_cv_header_inttypes_h = yes; then
976 AC_DEFINE(HAVE_INTTYPES_H, 1,
977 [Define if you have a working <inttypes.h> header file.])
980 dnl Disabled until we have a complete test for buggy enum bitfields.
981 dnl gcc_AC_C_ENUM_BF_UNSIGNED
983 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
984 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
985 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
986 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
987 putchar_unlocked putc_unlocked)
988 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
989 sysconf strsignal getrusage nl_langinfo scandir alphasort \
990 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
993 if test x$ac_cv_func_mbstowcs = xyes; then
994 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
995 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1001 [gcc_cv_func_mbstowcs_works=yes],
1002 [gcc_cv_func_mbstowcs_works=no],
1003 [gcc_cv_func_mbstowcs_works=yes])])
1004 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1005 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1006 [Define this macro if mbstowcs does not crash when its
1007 first argument is NULL.])
1011 AC_CHECK_TYPE(ssize_t, int)
1013 # Try to determine the array type of the second argument of getgroups
1014 # for the target system (int or gid_t).
1016 if test "${target}" = "${build}"; then
1017 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1020 # This condition may need some tweaking. It should include all
1021 # targets where the array type of the second argument of getgroups
1022 # is int and the type of gid_t is not equivalent to int.
1023 *-*-sunos* | *-*-ultrix*)
1024 TARGET_GETGROUPS_T=int
1027 TARGET_GETGROUPS_T=gid_t
1031 AC_SUBST(TARGET_GETGROUPS_T)
1033 gcc_AC_FUNC_MMAP_BLACKLIST
1037 # Under VMS, vfork works very differently than on Unix. The standard test
1038 # won't work, and it isn't easily adaptable. It makes more sense to
1040 ac_cv_func_vfork_works=yes
1046 # Until we have in-tree GNU iconv:
1048 AC_SUBST(LIBICONV_DEP)
1054 # We will need to find libiberty.h and ansidecl.h
1055 saved_CFLAGS="$CFLAGS"
1056 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1057 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1058 strsignal strstr strverscmp \
1059 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1060 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1061 #include "ansidecl.h"
1062 #include "system.h"])
1064 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1065 #include "ansidecl.h"
1067 #ifdef HAVE_SYS_RESOURCE_H
1068 #include <sys/resource.h>
1072 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1073 #include "ansidecl.h"
1075 #ifdef HAVE_SYS_RESOURCE_H
1076 #include <sys/resource.h>
1078 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1079 [Define to \`long' if <sys/resource.h> doesn't define.])])
1081 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1082 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1083 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1084 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1085 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1086 #include "ansidecl.h"
1095 gcc_AC_CHECK_DECLS(times, , ,[
1096 #include "ansidecl.h"
1098 #ifdef HAVE_SYS_TIMES_H
1099 #include <sys/times.h>
1103 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1104 #include "ansidecl.h"
1109 # More time-related stuff.
1110 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1111 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1112 #include "ansidecl.h"
1114 #ifdef HAVE_SYS_TIMES_H
1115 #include <sys/times.h>
1117 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1118 if test $ac_cv_struct_tms = yes; then
1119 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1120 [Define if <sys/times.h> defines struct tms.])
1123 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1124 # revisit after autoconf 2.50.
1125 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1126 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1127 #include "ansidecl.h"
1129 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1130 if test $gcc_cv_type_clock_t = yes; then
1131 AC_DEFINE(HAVE_CLOCK_T, 1,
1132 [Define if <time.h> defines clock_t.])
1135 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1136 CFLAGS="$saved_CFLAGS"
1138 gcc_AC_INITFINI_ARRAY
1140 # mkdir takes a single argument on some systems.
1141 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1149 # With Setjmp/Longjmp based exception handling.
1150 AC_ARG_ENABLE(sjlj-exceptions,
1151 [ --enable-sjlj-exceptions
1152 arrange to use setjmp/longjmp exception handling],
1155 if test $enableval != yes; then
1156 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1161 force_sjlj_exceptions=yes],
1164 force_sjlj_exceptions=yes
1168 force_sjlj_exceptions=no
1171 if test $force_sjlj_exceptions = yes; then
1172 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1173 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1174 [Define 0/1 to force the choice for exception handling model.])
1177 # For platforms with the unwind ABI which includes an unwind library,
1178 # libunwind, we can choose to use the system libunwind.
1179 AC_ARG_WITH(system-libunwind,
1180 [ --with-system-libunwind use installed libunwind])
1182 # config.gcc also contains tests of with_system_libunwind.
1183 if test x$with_system_libunwind = xyes; then
1184 AC_DEFINE(HAVE_GETIPINFO, 1,
1185 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1188 # --------------------------------------------------------
1189 # Build, host, and target specific configuration fragments
1190 # --------------------------------------------------------
1192 # Collect build-machine-specific information.
1193 . ${srcdir}/config.build
1195 # Collect host-machine-specific information.
1196 . ${srcdir}/config.host
1200 # Collect target-machine-specific information.
1201 . ${srcdir}/config.gcc
1203 extra_objs="${host_extra_objs} ${extra_objs}"
1204 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1206 # Default the target-machine variables that were not explicitly set.
1207 if test x"$tm_file" = x
1208 then tm_file=$cpu_type/$cpu_type.h; fi
1210 if test x"$extra_headers" = x
1211 then extra_headers=; fi
1213 if test x$md_file = x
1214 then md_file=$cpu_type/$cpu_type.md; fi
1216 if test x$out_file = x
1217 then out_file=$cpu_type/$cpu_type.c; fi
1219 if test x"$tmake_file" = x
1220 then tmake_file=$cpu_type/t-$cpu_type
1223 if test x"$dwarf2" = xyes
1224 then tm_file="$tm_file tm-dwarf2.h"
1227 # Say what files are being used for the output code and MD file.
1228 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1229 echo "Using \`$srcdir/config/$md_file' as machine description file."
1231 # If any of the xm_file variables contain nonexistent files, warn
1232 # about them and drop them.
1235 for x in $build_xm_file; do
1236 if test -f $srcdir/config/$x
1238 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1244 for x in $host_xm_file; do
1245 if test -f $srcdir/config/$x
1247 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1253 for x in $xm_file; do
1254 if test -f $srcdir/config/$x
1256 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1262 for f in $tm_file; do
1265 if test $count = ax; then
1266 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1268 echo "Using the following target machine macro files:"
1269 for f in $tm_file; do
1270 echo " $srcdir/config/$f"
1274 if test x$need_64bit_hwint = xyes; then
1275 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1276 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1279 if test x$use_long_long_for_widest_fast_int = xyes; then
1280 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1281 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1282 efficiently supported by the host hardware.])
1286 for f in $host_xm_file; do
1289 if test $count = a; then
1291 elif test $count = ax; then
1292 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1294 echo "Using the following host machine macro files:"
1295 for f in $host_xm_file; do
1296 echo " $srcdir/config/$f"
1299 echo "Using ${out_host_hook_obj} for host machine hooks."
1301 if test "$host_xm_file" != "$build_xm_file"; then
1303 for f in $build_xm_file; do
1306 if test $count = a; then
1308 elif test $count = ax; then
1309 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1311 echo "Using the following build machine macro files:"
1312 for f in $build_xm_file; do
1313 echo " $srcdir/config/$f"
1320 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1321 gcc_cv_mcontext_underscores,
1323 #include <sys/cdefs.h>
1324 #include <sys/signal.h>
1325 #include <ucontext.h>
1326 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1328 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1329 if test $gcc_cv_mcontext_underscores = yes; then
1330 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1331 [mcontext_t fields start with __])
1340 # Check if a valid thread package
1341 case ${enable_threads} in
1344 target_thread_file='single'
1348 target_thread_file='single'
1350 aix | dce | gnat | irix | posix | posix95 | rtems | \
1351 single | solaris | vxworks | win32 | mipssde)
1352 target_thread_file=${enable_threads}
1355 echo "${enable_threads} is an unknown thread package" 1>&2
1360 if test x${thread_file} = x; then
1361 # No thread file set by target-specific clauses in config.gcc,
1362 # so use file chosen by default logic above
1363 thread_file=${target_thread_file}
1366 # Make gthr-default.h if we have a thread file.
1368 if test $thread_file != single; then
1369 rm -f gthr-default.h
1370 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1371 gthread_flags=-DHAVE_GTHR_DEFAULT
1373 AC_SUBST(gthread_flags)
1380 if test x$enable___cxa_atexit = xyes || \
1381 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1382 if test x$host = x$target; then
1384 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1385 # keyed to flag_use_cxa_atexit
1390 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1391 [echo "__cxa_atexit can't be enabled on this target"])
1395 # We can't check for __cxa_atexit when building a cross, so assume
1399 if test x$use_cxa_atexit = xyes; then
1400 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1401 [Define if you want to use __cxa_atexit, rather than atexit, to
1402 register C++ destructors for local statics and global objects.
1403 This is essential for fully standards-compliant handling of
1404 destructors, but requires __cxa_atexit in libc.])
1409 if test x$with_system_libunwind = xyes; then
1410 if test x$host = x$target; then
1411 AC_SEARCH_LIBS(_Unwind_GetIPInfo, unwind,, [use_getipinfo=no])
1414 GCC_TARGET_TEMPLATE(HAVE_GETIPINFO)
1415 if test x$use_getipinfo = xyes; then
1416 AC_DEFINE(HAVE_GETIPINFO, 1,
1417 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1419 echo "The system unwind library does not support _Unwind_GetIPInfo."
1422 # Look for a file containing extra machine modes.
1423 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1424 extra_modes_file='$(srcdir)'/config/${extra_modes}
1425 AC_SUBST(extra_modes_file)
1426 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1427 [Define to the name of a file containing a list of extra machine modes
1428 for this architecture.])
1431 # Convert extra_options into a form suitable for Makefile use.
1433 for f in $extra_options; do
1434 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1436 AC_SUBST(extra_opt_files)
1438 # auto-host.h is the file containing items generated by autoconf and is
1439 # the first file included by config.h.
1440 # If host=build, it is correct to have bconfig include auto-host.h
1441 # as well. If host!=build, we are in error and need to do more
1442 # work to find out the build config parameters.
1443 if test x$host = x$build
1445 build_auto=auto-host.h
1447 # We create a subdir, then run autoconf in the subdir.
1448 # To prevent recursion we set host and build for the new
1449 # invocation of configure to the build for this invocation
1456 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1457 *) realsrcdir=../${srcdir};;
1459 saved_CFLAGS="${CFLAGS}"
1460 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1461 ${realsrcdir}/configure \
1462 --enable-languages=${enable_languages-all} \
1463 --target=$target_alias --host=$build_alias --build=$build_alias
1464 CFLAGS="${saved_CFLAGS}"
1466 # We just finished tests for the build machine, so rename
1467 # the file auto-build.h in the gcc directory.
1468 mv auto-host.h ../auto-build.h
1471 build_auto=auto-build.h
1473 AC_SUBST(build_subdir)
1475 tm_file="${tm_file} defaults.h"
1476 tm_p_file="${tm_p_file} tm-preds.h"
1477 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1478 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1479 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1480 # put this back in temporarily.
1481 xm_file="auto-host.h ansidecl.h ${xm_file}"
1488 # Compile in configure arguments.
1489 if test -f configargs.h ; then
1490 # Being re-configured.
1491 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1492 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1494 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1497 # Double all backslashes and backslash all quotes to turn
1498 # gcc_config_arguments into a C string.
1499 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1500 $gcc_config_arguments
1502 gcc_config_arguments_str=`cat conftest.out`
1505 cat > configargs.h <<EOF
1506 /* Generated automatically. */
1507 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1508 static const char thread_model[] = "$thread_file";
1510 static const struct {
1511 const char *name, *value;
1512 } configure_default_options[] = $configure_default_options;
1516 # Internationalization
1517 ZW_GNU_GETTEXT_SISTER_DIR
1519 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1520 # -liconv on the link line twice.
1521 case "$LIBINTL" in *$LIBICONV*)
1525 AC_ARG_ENABLE(secureplt,
1526 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1529 # Windows32 Registry support for specifying GCC installation paths.
1530 AC_ARG_ENABLE(win32-registry,
1531 [ --disable-win32-registry
1532 disable lookup of installation paths in the
1533 Registry on Windows hosts
1534 --enable-win32-registry enable registry lookup (default)
1535 --enable-win32-registry=KEY
1536 use KEY instead of GCC version as the last portion
1537 of the registry key],,)
1540 win32 | pe | cygwin* | mingw32* | uwin*)
1541 if test "x$enable_win32_registry" != xno; then
1542 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1545 if test "x$enable_win32_registry" != xno; then
1546 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1547 [Define to 1 if installation paths should be looked up in the Windows
1548 Registry. Ignored on non-Windows hosts.])
1550 if test "x$enable_win32_registry" != xyes \
1551 && test "x$enable_win32_registry" != x; then
1552 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1553 [Define to be the last component of the Windows registry key under which
1554 to look for installation paths. The full key used will be
1555 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1556 The default is the GCC version number.])
1562 # Get an absolute path to the GCC top-level source directory
1563 holddir=`${PWDCMD-pwd}`
1565 topdir=`${PWDCMD-pwd}`
1568 # Conditionalize the makefile for this host machine.
1570 for f in ${host_xmake_file}
1572 if test -f ${srcdir}/config/$f
1574 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1578 # Conditionalize the makefile for this target machine.
1580 for f in ${tmake_file}
1582 if test -f ${srcdir}/config/$f
1584 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1587 tmake_file="${tmake_file_}"
1589 # This is a terrible hack which will go away some day.
1590 host_cc_for_libada=${CC}
1591 AC_SUBST(host_cc_for_libada)
1593 out_object_file=`basename $out_file .c`.o
1595 tm_file_list="options.h"
1596 tm_include_list="options.h"
1597 for f in $tm_file; do
1600 f=`echo $f | sed 's/^..//'`
1601 tm_file_list="${tm_file_list} $f"
1602 tm_include_list="${tm_include_list} $f"
1605 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1606 tm_include_list="${tm_include_list} $f"
1609 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1610 tm_include_list="${tm_include_list} config/$f"
1617 for f in $tm_p_file; do
1620 tm_p_file_list="${tm_p_file_list} $f"
1621 tm_p_include_list="${tm_p_include_list} $f"
1624 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1625 tm_p_include_list="${tm_p_include_list} config/$f"
1631 for f in $xm_file; do
1634 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1635 xm_include_list="${xm_include_list} $f"
1638 xm_file_list="${xm_file_list} $f"
1639 xm_include_list="${xm_include_list} $f"
1642 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1643 xm_include_list="${xm_include_list} config/$f"
1649 host_xm_include_list=
1650 for f in $host_xm_file; do
1653 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1654 host_xm_include_list="${host_xm_include_list} $f"
1657 host_xm_file_list="${host_xm_file_list} $f"
1658 host_xm_include_list="${host_xm_include_list} $f"
1661 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1662 host_xm_include_list="${host_xm_include_list} config/$f"
1668 for f in $build_xm_file; do
1671 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1672 build_xm_include_list="${build_xm_include_list} $f"
1674 auto-build.h | auto-host.h )
1675 build_xm_file_list="${build_xm_file_list} $f"
1676 build_xm_include_list="${build_xm_include_list} $f"
1679 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1680 build_xm_include_list="${build_xm_include_list} config/$f"
1685 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1686 # cross-compiler which does not use the native headers and libraries.
1687 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1688 CROSS= AC_SUBST(CROSS)
1689 ALL=all.internal AC_SUBST(ALL)
1690 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1692 if test "x$with_build_sysroot" != x; then
1693 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1695 # This value is used, even on a native system, because
1696 # CROSS_SYSTEM_HEADER_DIR is just
1697 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1698 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1701 if test x$host != x$target
1703 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1705 SYSTEM_HEADER_DIR=$build_system_header_dir
1706 case "$host","$target" in
1707 # Darwin crosses can use the host system's libraries and headers,
1708 # because of the fat library support. Of course, it must be the
1709 # same version of Darwin on both sides. Allow the user to
1710 # just say --target=foo-darwin without a version number to mean
1711 # "the version on this system".
1712 *-*-darwin*,*-*-darwin*)
1713 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1714 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1715 if test $hostos = $targetos -o $targetos = darwin ; then
1717 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1722 i?86-*-*,x86_64-*-* \
1723 | powerpc*-*-*,powerpc64*-*-*)
1724 CROSS="$CROSS -DNATIVE_CROSS" ;;
1726 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1727 SYSTEM_HEADER_DIR=$build_system_header_dir
1730 # If this is a cross-compiler that does not
1731 # have its own set of headers then define
1734 # If this is using newlib, without having the headers available now,
1735 # then define inhibit_libc in LIBGCC2_CFLAGS.
1736 # This prevents libgcc2 from containing any code which requires libc
1738 : ${inhibit_libc=false}
1739 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1740 test x$with_newlib = xyes ; } &&
1741 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1744 AC_SUBST(inhibit_libc)
1746 # When building gcc with a cross-compiler, we need to adjust things so
1747 # that the generator programs are still built with the native compiler.
1748 # Also, we cannot run fixincludes or fix-header.
1750 # These are the normal (build=host) settings:
1751 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1752 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1753 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1755 # Possibly disable fixproto, on a per-target basis.
1756 case ${use_fixproto} in
1761 STMP_FIXPROTO=stmp-fixproto
1764 AC_SUBST(STMP_FIXPROTO)
1766 # And these apply if build != host, or we are generating coverage data
1767 if test x$build != x$host || test "x$coverage_flags" != x
1769 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1771 if test "x$TARGET_SYSTEM_ROOT" = x; then
1772 if test "x$STMP_FIXPROTO" != x; then
1773 STMP_FIXPROTO=stmp-install-fixproto
1778 # Expand extra_headers to include complete path.
1779 # This substitutes for lots of t-* files.
1781 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1782 for file in ${extra_headers} ; do
1783 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1786 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1787 if test x"$use_gcc_tgmath" = xyes
1788 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1791 # Define collect2 in Makefile.
1792 case $host_can_use_collect2 in
1794 *) collect2='collect2$(exeext)' ;;
1796 AC_SUBST([collect2])
1798 # Add a definition of USE_COLLECT2 if system wants one.
1799 case $use_collect2 in
1800 no) use_collect2= ;;
1803 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1804 xm_defines="${xm_defines} USE_COLLECT2"
1805 case $host_can_use_collect2 in
1807 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1813 # ---------------------------
1814 # Assembler & linker features
1815 # ---------------------------
1817 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1818 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1819 # However when ld-new is first executed from the build tree, libtool will
1820 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1821 # to the build tree. While doing this we need to use the previous-stage
1822 # linker, or we have an infinite loop. The presence of a shell script as
1823 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1824 # the gcc/collect-ld script. So we need to know how libtool works, or
1825 # exec-tool will fail.
1827 m4_defun([_LT_CONFIG_COMMANDS], [])
1830 AC_SUBST(enable_fast_install)
1832 # Identify the assembler which will work hand-in-glove with the newly
1833 # built GCC, so that we can examine its features. This is the assembler
1834 # which will be driven by the driver program.
1836 # If build != host, and we aren't building gas in-tree, we identify a
1837 # build->target assembler and hope that it will have the same features
1838 # as the host->target assembler we'll be using.
1839 gcc_cv_gas_major_version=
1840 gcc_cv_gas_minor_version=
1841 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1843 m4_pattern_allow([AS_FOR_TARGET])dnl
1844 AS_VAR_SET_IF(gcc_cv_as,, [
1845 if test -x "$DEFAULT_ASSEMBLER"; then
1846 gcc_cv_as="$DEFAULT_ASSEMBLER"
1847 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1848 && test -f ../gas/Makefile \
1849 && test x$build = x$host; then
1850 gcc_cv_as=../gas/as-new$build_exeext
1851 elif test -x as$build_exeext; then
1852 # Build using assembler in the current directory.
1853 gcc_cv_as=./as$build_exeext
1854 elif test -x $AS_FOR_TARGET; then
1855 gcc_cv_as="$AS_FOR_TARGET"
1857 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1860 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1861 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1862 case "$ORIGINAL_AS_FOR_TARGET" in
1863 ./as | ./as$build_exeext) ;;
1864 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1867 AC_MSG_CHECKING(what assembler to use)
1868 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1869 # Single tree build which includes gas. We want to prefer it
1870 # over whatever linker top-level may have detected, since
1871 # we'll use what we're building after installation anyway.
1872 AC_MSG_RESULT(newly built gas)
1874 _gcc_COMPUTE_GAS_VERSION
1875 in_tree_gas_is_elf=no
1876 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1877 || (grep 'obj_format = multi' ../gas/Makefile \
1878 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1880 in_tree_gas_is_elf=yes
1883 AC_MSG_RESULT($gcc_cv_as)
1887 # Identify the linker which will work hand-in-glove with the newly
1888 # built GCC, so that we can examine its features. This is the linker
1889 # which will be driven by the driver program.
1891 # If build != host, and we aren't building gas in-tree, we identify a
1892 # build->target linker and hope that it will have the same features
1893 # as the host->target linker we'll be using.
1894 gcc_cv_gld_major_version=
1895 gcc_cv_gld_minor_version=
1896 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1897 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1899 AS_VAR_SET_IF(gcc_cv_ld,, [
1900 if test -x "$DEFAULT_LINKER"; then
1901 gcc_cv_ld="$DEFAULT_LINKER"
1902 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1903 && test -f ../ld/Makefile \
1904 && test x$build = x$host; then
1905 gcc_cv_ld=../ld/ld-new$build_exeext
1906 elif test -x collect-ld$build_exeext; then
1907 # Build using linker in the current directory.
1908 gcc_cv_ld=./collect-ld$build_exeext
1909 elif test -x $LD_FOR_TARGET; then
1910 gcc_cv_ld="$LD_FOR_TARGET"
1912 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1915 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1916 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1917 case "$ORIGINAL_LD_FOR_TARGET" in
1918 ./collect-ld | ./collect-ld$build_exeext) ;;
1919 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1922 AC_MSG_CHECKING(what linker to use)
1923 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1924 # Single tree build which includes ld. We want to prefer it
1925 # over whatever linker top-level may have detected, since
1926 # we'll use what we're building after installation anyway.
1927 AC_MSG_RESULT(newly built ld)
1929 in_tree_ld_is_elf=no
1930 if (grep 'EMUL = .*elf' ../ld/Makefile \
1931 || grep 'EMUL = .*linux' ../ld/Makefile \
1932 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1933 in_tree_ld_is_elf=yes
1935 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
1938 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1939 if test x$gcc_cv_gld_version != x; then
1943 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1944 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1947 AC_MSG_RESULT($gcc_cv_ld)
1951 # Figure out what nm we will be using.
1952 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1953 AS_VAR_SET_IF(gcc_cv_nm,, [
1954 if test -f $gcc_cv_binutils_srcdir/configure.in \
1955 && test -f ../binutils/Makefile \
1956 && test x$build = x$host; then
1957 gcc_cv_nm=../binutils/nm-new$build_exeext
1958 elif test -x nm$build_exeext; then
1959 gcc_cv_nm=./nm$build_exeext
1960 elif test -x $NM_FOR_TARGET; then
1961 gcc_cv_nm="$NM_FOR_TARGET"
1963 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1966 AC_MSG_CHECKING(what nm to use)
1967 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1968 # Single tree build which includes binutils.
1969 AC_MSG_RESULT(newly built nm)
1972 AC_MSG_RESULT($gcc_cv_nm)
1976 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1977 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1978 case "$ORIGINAL_NM_FOR_TARGET" in
1979 ./nm | ./nm$build_exeext) ;;
1980 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
1984 # Figure out what objdump we will be using.
1985 AS_VAR_SET_IF(gcc_cv_objdump,, [
1986 if test -f $gcc_cv_binutils_srcdir/configure.in \
1987 && test -f ../binutils/Makefile \
1988 && test x$build = x$host; then
1989 # Single tree build which includes binutils.
1990 gcc_cv_objdump=../binutils/objdump$build_exeext
1991 elif test -x objdump$build_exeext; then
1992 gcc_cv_objdump=./objdump$build_exeext
1993 elif test -x $OBJDUMP_FOR_TARGET; then
1994 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
1996 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
1999 AC_MSG_CHECKING(what objdump to use)
2000 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2001 # Single tree build which includes binutils.
2002 AC_MSG_RESULT(newly built objdump)
2003 elif test x$gcc_cv_objdump = x; then
2004 AC_MSG_RESULT(not found)
2006 AC_MSG_RESULT($gcc_cv_objdump)
2009 # Figure out what assembler alignment features are present.
2010 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2014 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2015 [Define if your assembler supports .balign and .p2align.])])
2017 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2020 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2021 [Define if your assembler supports specifying the maximum number
2022 of bytes to skip when using the GAS .p2align command.])])
2024 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2027 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2028 [Define if your assembler supports .literal16.])])
2030 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2032 [conftest_label1: .word 0
2034 conftest_label2: .word 0
2036 [if test x$gcc_cv_nm != x; then
2037 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2038 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2039 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2041 else gcc_cv_as_subsection_m1=yes
2043 rm -f conftest.nm1 conftest.nm2
2045 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2046 [Define if your assembler supports .subsection and .subsection -1 starts
2047 emitting at the beginning of your section.])])
2049 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2052 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2054 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2056 [ .weakref foobar, barfnot],,
2057 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2059 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2062 .NSUBSPA $CODE$,COMDAT],,
2063 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2065 # .hidden needs to be supported in both the assembler and the linker,
2066 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2067 # This is irritatingly difficult to feature test for; we have to check the
2068 # date string after the version number. If we've got an in-tree
2069 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2071 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2072 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2077 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2078 [if test $in_tree_ld = yes ; then
2080 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2081 && test $in_tree_ld_is_elf = yes; then
2082 gcc_cv_ld_hidden=yes
2085 gcc_cv_ld_hidden=yes
2086 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2087 if echo "$ld_ver" | grep GNU > /dev/null; then
2089 ld_vers=`echo $ld_ver | sed -n \
2090 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2091 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2092 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2093 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2094 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2095 if test 0"$ld_date" -lt 20020404; then
2096 if test -n "$ld_date"; then
2097 # If there was date string, but was earlier than 2002-04-04, fail
2099 elif test -z "$ld_vers"; then
2100 # If there was no date string nor ld version number, something is wrong
2103 test -z "$ld_vers_patch" && ld_vers_patch=0
2104 if test "$ld_vers_major" -lt 2; then
2106 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2107 gcc_cv_ld_hidden="no"
2108 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2116 hppa64*-*-hpux* | ia64*-*-hpux*)
2117 gcc_cv_ld_hidden=yes
2125 libgcc_visibility=no
2126 AC_SUBST(libgcc_visibility)
2127 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2128 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2129 libgcc_visibility=yes
2130 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2131 [Define if your assembler and linker support .hidden.])
2134 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2135 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2143 [# GAS versions before 2.11 do not support uleb128,
2144 # despite appearing to.
2145 # ??? There exists an elf-specific test that will crash
2146 # the assembler. Perhaps it's better to figure out whether
2147 # arbitrary sections are supported and try the test.
2148 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2149 if echo "$as_ver" | grep GNU > /dev/null; then
2151 as_vers=`echo $as_ver | sed -n \
2152 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2153 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2154 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2156 if test $as_major -eq 2 && test $as_minor -lt 11
2158 else gcc_cv_as_leb128=yes
2161 [AC_DEFINE(HAVE_AS_LEB128, 1,
2162 [Define if your assembler supports .sleb128 and .uleb128.])])
2164 # GAS versions up to and including 2.11.0 may mis-optimize
2166 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2174 .section .eh_frame,"aw",@progbits
2176 .4byte .LECIE1-.LSCIE1
2190 .4byte .LEFDE1-.LASFDE1
2192 .4byte .LASFDE1-__FRAME_BEGIN__
2200 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2201 cat > conftest.lit <<EOF
2202 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2203 0010 01000000 12000000 18000000 00000000 ................
2204 0020 08000000 04080000 0044 .........D @&t@
2206 cat > conftest.big <<EOF
2207 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2208 0010 00000001 00000012 00000018 00000000 ................
2209 0020 00000008 04000000 0844 .........D @&t@
2211 # If the assembler didn't choke, and we can objdump,
2212 # and we got the correct data, then succeed.
2213 # The text in the here-document typically retains its unix-style line
2214 # endings, while the output of objdump will use host line endings.
2215 # Therefore, use diff -b for the comparisons.
2216 if test x$gcc_cv_objdump != x \
2217 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2218 | tail -3 > conftest.got \
2219 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2220 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2222 gcc_cv_as_eh_frame=yes
2223 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2224 gcc_cv_as_eh_frame=buggy
2226 # Uh oh, what do we do now?
2227 gcc_cv_as_eh_frame=no
2230 if test $gcc_cv_as_eh_frame = buggy; then
2231 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2232 [Define if your assembler mis-optimizes .eh_frame data.])
2235 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2236 [elf,2,12,0], [--fatal-warnings],
2237 [.section .rodata.str, "aMS", @progbits, 1])
2238 if test $gcc_cv_as_shf_merge = no; then
2239 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2240 [elf,2,12,0], [--fatal-warnings],
2241 [.section .rodata.str, "aMS", %progbits, 1])
2243 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2244 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2245 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2247 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2248 [elf,2,16,0], [--fatal-warnings],
2249 [.section .text,"axG",@progbits,.foo,comdat])
2250 if test $gcc_cv_as_comdat_group = yes; then
2251 gcc_cv_as_comdat_group_percent=no
2253 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2254 [elf,2,16,0], [--fatal-warnings],
2255 [.section .text,"axG",%progbits,.foo,comdat])
2257 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2259 if test 0"$ld_date" -lt 20050308; then
2260 if test -n "$ld_date"; then
2261 # If there was date string, but was earlier than 2005-03-08, fail
2263 elif test "$ld_vers_major" -lt 2; then
2265 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2270 # assume linkers other than GNU ld don't support COMDAT group
2273 if test $comdat_group = no; then
2274 gcc_cv_as_comdat_group=no
2275 gcc_cv_as_comdat_group_percent=no
2277 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2278 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2279 [Define 0/1 if your assembler and linker support COMDAT groups.])
2281 # Thread-local storage - the check is heavily parametrized.
2290 .section ".tdata","awT",@progbits
2293 ldq $27,__tls_get_addr($29) !literal!1
2294 lda $16,foo($29) !tlsgd!1
2295 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2296 ldq $27,__tls_get_addr($29) !literal!2
2297 lda $16,foo($29) !tlsldm!2
2298 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2299 ldq $1,foo($29) !gotdtprel
2300 ldah $2,foo($29) !dtprelhi
2301 lda $3,foo($2) !dtprello
2302 lda $4,foo($29) !dtprel
2303 ldq $1,foo($29) !gottprel
2304 ldah $2,foo($29) !tprelhi
2305 lda $3,foo($2) !tprello
2306 lda $4,foo($29) !tprel'
2309 tls_as_opt=--fatal-warnings
2313 .section ".tdata","awT",@progbits
2325 .section ".tdata","awT",@progbits
2329 addil LT%foo-$tls_gdidx$,gp
2330 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2333 addil LT%foo-$tls_ldidx$,gp
2335 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2336 addil LR%foo-$tls_dtpoff$,%ret0
2337 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2339 addil LT%foo-$tls_ieoff$,gp
2340 ldw RT%foo-$tls_ieoff$(%r1),%t2
2343 addil LR%foo-$tls_leoff$,%t1
2344 ldo RR%foo-$tls_leoff$(%r1),%t2'
2347 tls_as_opt=--fatal-warnings
2351 .section ".tdata","awT",%progbits
2364 .section ".tdata","awT",@progbits
2368 leal foo@TLSGD(,%ebx,1), %eax
2369 leal foo@TLSLDM(%ebx), %eax
2370 leal foo@DTPOFF(%eax), %edx
2371 movl foo@GOTTPOFF(%ebx), %eax
2372 subl foo@GOTTPOFF(%ebx), %eax
2373 addl foo@GOTNTPOFF(%ebx), %eax
2374 movl foo@INDNTPOFF, %eax
2375 movl $foo@TPOFF, %eax
2376 subl $foo@TPOFF, %eax
2377 leal foo@NTPOFF(%ecx), %eax'
2380 tls_as_opt=--fatal-warnings
2384 .section ".tdata","awT",@progbits
2388 leaq foo@TLSGD(%rip), %rdi
2389 leaq foo@TLSLD(%rip), %rdi
2390 leaq foo@DTPOFF(%rax), %rdx
2391 movq foo@GOTTPOFF(%rip), %rax
2392 movq $foo@TPOFF, %rax'
2395 tls_as_opt=--fatal-warnings
2399 .section ".tdata","awT",@progbits
2402 addl r16 = @ltoff(@dtpmod(foo#)), gp
2403 addl r17 = @ltoff(@dtprel(foo#)), gp
2404 addl r18 = @ltoff(@tprel(foo#)), gp
2405 addl r19 = @dtprel(foo#), gp
2406 adds r21 = @dtprel(foo#), r13
2407 movl r23 = @dtprel(foo#)
2408 addl r20 = @tprel(foo#), gp
2409 adds r22 = @tprel(foo#), r13
2410 movl r24 = @tprel(foo#)'
2413 tls_as_opt=--fatal-warnings
2417 .section .tdata,"awT",@progbits
2421 addiu $4, $28, %tlsgd(x)
2422 addiu $4, $28, %tlsldm(x)
2423 lui $4, %dtprel_hi(x)
2424 addiu $4, $4, %dtprel_lo(x)
2425 lw $4, %gottprel(x)($28)
2426 lui $4, %tprel_hi(x)
2427 addiu $4, $4, %tprel_lo(x)'
2430 tls_as_opt='-32 --fatal-warnings'
2434 .section ".tdata","awT",@progbits
2442 addi 3,31,ld0@got@tlsgd
2444 addi 3,31,x1@got@tlsld
2447 addis 9,3,x2@dtprel@ha
2448 addi 9,9,x2@dtprel@l
2449 lwz 9,x3@got@tprel(31)
2452 addis 9,2,x2@tprel@ha
2453 addi 9,9,x2@tprel@l'
2456 tls_as_opt="-a32 --fatal-warnings"
2460 .section ".tdata","awT",@progbits
2468 addi 3,2,ld0@got@tlsgd
2474 addi 3,2,x1@got@tlsld
2480 addis 9,3,x2@dtprel@ha
2481 addi 9,9,x2@dtprel@l
2484 ld 9,x3@got@dtprel(2)
2490 tls_as_opt="-a64 --fatal-warnings"
2494 .section ".tdata","awT",@progbits
2503 l %r1,foo@GOTNTPOFF(%r12)
2504 l %r1,0(%r1):tls_load:foo
2505 bas %r14,0(%r1,%r13):tls_gdcall:foo
2506 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2509 tls_as_opt="-m31 --fatal-warnings"
2513 .section ".tdata","awT",@progbits
2521 lg %r1,foo@GOTNTPOFF(%r12)
2522 larl %r1,foo@INDNTPOFF
2523 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2524 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2527 tls_as_opt="-m64 -Aesame --fatal-warnings"
2529 sh-*-* | sh[34]-*-*)
2531 .section ".tdata","awT",@progbits
2541 tls_as_opt=--fatal-warnings
2545 sparc*-sun-solaris2.[56789]*)
2546 # TLS was introduced in the Solaris 9 4/04 release but
2547 # we do not enable it by default on Solaris 9 either.
2548 if test "x$enable_tls" = xyes ; then
2554 sparc*-sun-solaris2.*)
2561 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2563 .section ".tdata",#alloc,#write,#tls
2566 sethi %tgd_hi22(foo), %o0
2567 add %o0, %tgd_lo10(foo), %o1
2568 add %l7, %o1, %o0, %tgd_add(foo)
2569 call __tls_get_addr, %tgd_call(foo)
2570 sethi %tldm_hi22(foo), %l1
2571 add %l1, %tldm_lo10(foo), %l2
2572 add %l7, %l2, %o0, %tldm_add(foo)
2573 call __tls_get_addr, %tldm_call(foo)
2574 sethi %tldo_hix22(foo), %l3
2575 xor %l3, %tldo_lox10(foo), %l4
2576 add %o0, %l4, %l5, %tldo_add(foo)
2577 sethi %tie_hi22(foo), %o3
2578 add %o3, %tie_lo10(foo), %o3
2579 ld [%l7 + %o3], %o2, %tie_ld(foo)
2580 add %g7, %o2, %o4, %tie_add(foo)
2581 sethi %tle_hix22(foo), %l1
2582 xor %l1, %tle_lox10(foo), %o5
2583 ld [%g7 + %o5], %o1'
2588 .section ".tdata","awT",@progbits
2591 sethi %tgd_hi22(foo), %o0
2592 add %o0, %tgd_lo10(foo), %o1
2593 add %l7, %o1, %o0, %tgd_add(foo)
2594 call __tls_get_addr, %tgd_call(foo)
2595 sethi %tldm_hi22(foo), %l1
2596 add %l1, %tldm_lo10(foo), %l2
2597 add %l7, %l2, %o0, %tldm_add(foo)
2598 call __tls_get_addr, %tldm_call(foo)
2599 sethi %tldo_hix22(foo), %l3
2600 xor %l3, %tldo_lox10(foo), %l4
2601 add %o0, %l4, %l5, %tldo_add(foo)
2602 sethi %tie_hi22(foo), %o3
2603 add %o3, %tie_lo10(foo), %o3
2604 ld [%l7 + %o3], %o2, %tie_ld(foo)
2605 add %g7, %o2, %o4, %tie_add(foo)
2606 sethi %tle_hix22(foo), %l1
2607 xor %l1, %tle_lox10(foo), %o5
2608 ld [%g7 + %o5], %o1'
2611 tls_as_opt="-32 --fatal-warnings"
2617 if test "x$enable_tls" = xno ; then
2618 : # TLS explicitly disabled.
2619 elif test "x$enable_tls" = xyes ; then
2620 set_have_as_tls=yes # TLS explicitly enabled.
2621 elif test -z "$tls_first_major"; then
2622 : # If we don't have a check, assume no support.
2624 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2625 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2626 [set_have_as_tls=yes])
2628 if test $set_have_as_tls = yes ; then
2629 AC_DEFINE(HAVE_AS_TLS, 1,
2630 [Define if your assembler supports thread-local storage.])
2633 # Target-specific assembler checks.
2635 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2636 gcc_cv_ld_static_dynamic=no
2637 if test $in_tree_ld = yes ; then
2638 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2639 gcc_cv_ld_static_dynamic=yes
2641 elif test x$gcc_cv_ld != x; then
2642 # Check if linker supports -Bstatic/-Bdynamic option
2643 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2644 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2645 gcc_cv_ld_static_dynamic=yes
2648 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2649 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2650 [Define if your linker supports -Bstatic/-Bdynamic option.])
2652 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2654 if test x"$demangler_in_ld" = xyes; then
2655 AC_MSG_CHECKING(linker --demangle support)
2656 gcc_cv_ld_demangle=no
2657 if test $in_tree_ld = yes; then
2658 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2659 gcc_cv_ld_demangle=yes
2661 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2662 # Check if the GNU linker supports --demangle option
2663 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2664 gcc_cv_ld_demangle=yes
2667 if test x"$gcc_cv_ld_demangle" = xyes; then
2668 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2669 [Define if your linker supports --demangle option.])
2671 AC_MSG_RESULT($gcc_cv_ld_demangle)
2675 # All TARGET_ABI_OSF targets.
2676 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2677 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2678 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2681 extbl $3, $2, $3 !lituse_bytoff!1
2682 ldq $2, a($29) !literal!1
2683 ldq $4, b($29) !literal!2
2684 ldq_u $3, 0($2) !lituse_base!1
2685 ldq $27, f($29) !literal!5
2686 jsr $26, ($27), f !lituse_jsr!5
2687 ldah $29, 0($26) !gpdisp!3
2688 lda $0, c($29) !gprel
2689 ldah $1, d($29) !gprelhigh
2690 lda $1, d($1) !gprellow
2691 lda $29, 0($29) !gpdisp!3],,
2692 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2693 [Define if your assembler supports explicit relocations.])])
2694 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2695 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2698 ldq $27, a($29) !literal!1
2699 jsr $26, ($27), a !lituse_jsrdirect!1],,
2700 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2701 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2705 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2706 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2707 [-no-mul-bug-abort], [.text],,
2708 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2709 [Define if your assembler supports the -no-mul-bug-abort option.])])
2713 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2714 [.register %g2, #scratch],,
2715 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2716 [Define if your assembler supports .register.])])
2718 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2720 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2721 [Define if your assembler supports -relax option.])])
2723 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2724 gcc_cv_as_sparc_ua_pcrel,,
2732 .uaword %r_disp32(foo)],
2733 [if test x$gcc_cv_ld != x \
2734 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2735 gcc_cv_as_sparc_ua_pcrel=yes
2738 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2739 [Define if your assembler and linker support unaligned PC relative relocs.])
2741 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2742 gcc_cv_as_sparc_ua_pcrel_hidden,,
2747 .uaword %r_disp32(foo)
2748 .byte 0x32, 0x33, 0x34
2753 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2754 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2755 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2756 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2757 if $gcc_cv_objdump -R conftest 2> /dev/null \
2758 | grep 'DISP32' > /dev/null 2>&1; then
2761 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2765 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2766 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2767 ]) # unaligned pcrel relocs
2769 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2770 gcc_cv_as_sparc_offsetable_lo10,,
2773 or %g1, %lo(ab) + 12, %g1
2774 or %g1, %lo(ab + 12), %g1],
2775 [if test x$gcc_cv_objdump != x \
2776 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2777 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2778 gcc_cv_as_sparc_offsetable_lo10=yes
2780 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2781 [Define if your assembler supports offsetable %lo().])])
2785 i[34567]86-*-* | x86_64-*-*)
2788 cygwin* | pe | mingw32*)
2789 # Used for DWARF 2 in PE
2790 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2791 gcc_cv_as_ix86_pe_secrel32,
2797 [if test x$gcc_cv_ld != x \
2798 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2799 gcc_cv_as_ix86_pe_secrel32=yes
2802 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2803 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2807 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2808 gcc_cv_as_ix86_filds_fists,
2809 [2,9,0],, [filds mem; fists mem],,
2810 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2811 [Define if your assembler uses the new HImode fild and fist notation.])])
2813 gcc_GAS_CHECK_FEATURE([cmov syntax],
2814 gcc_cv_as_ix86_cmov_sun_syntax,,,
2815 [cmovl.l %edx, %eax],,
2816 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2817 [Define if your assembler supports the Sun syntax for cmov.])])
2819 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2820 gcc_cv_as_ix86_ffreep,,,
2822 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2823 [Define if your assembler supports the ffreep mnemonic.])])
2825 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
2826 gcc_cv_as_ix86_sahf,,,
2828 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
2829 [Define if your assembler supports the sahf mnemonic.])])
2831 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2832 gcc_cv_as_ix86_diff_sect_delta,,,
2840 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2841 [Define if your assembler supports the subtraction of symbols in different sections.])])
2843 # This one is used unconditionally by i386.[ch]; it is to be defined
2844 # to 1 if the feature is present, 0 otherwise.
2845 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2846 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2852 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2853 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2854 [Define true if the assembler supports '.long foo@GOTOFF'.])
2858 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2859 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2861 addl r15 = @ltoffx(x#), gp
2863 ld8.mov r16 = [[r15]], x#],,
2864 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2865 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2871 *-*-aix*) conftest_s=' .machine "pwr5"
2875 gcc_GAS_CHECK_FEATURE([.machine directive support],
2876 gcc_cv_as_machine_directive,,,
2877 [ .machine ppc7400])
2878 if test x$gcc_cv_as_machine_directive != xyes; then
2879 echo "*** This target requires an assembler supporting \".machine\"" >&2
2880 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2881 test x$build = x$target && exit 1
2885 *) conftest_s=' .machine power4
2890 gcc_GAS_CHECK_FEATURE([mfcr field support],
2891 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2893 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2894 [Define if your assembler supports mfcr field.])])
2897 *-*-aix*) conftest_s=' .machine "pwr5"
2900 *) conftest_s=' .machine power5
2905 gcc_GAS_CHECK_FEATURE([popcntb support],
2906 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2908 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2909 [Define if your assembler supports popcntb field.])])
2912 *-*-aix*) conftest_s=' .machine "pwr5x"
2915 *) conftest_s=' .machine power5
2920 gcc_GAS_CHECK_FEATURE([fp round support],
2921 gcc_cv_as_powerpc_fprnd, [2,17,0],,
2923 [AC_DEFINE(HAVE_AS_FPRND, 1,
2924 [Define if your assembler supports fprnd.])])
2927 *-*-aix*) conftest_s=' .machine "pwr6"
2930 *) conftest_s=' .machine power6
2935 gcc_GAS_CHECK_FEATURE([move fp gpr support],
2936 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
2938 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
2939 [Define if your assembler supports mffgpr and mftgpr.])])
2942 *-*-aix*) conftest_s=' .csect .text[[PR]]
2944 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2948 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2949 *) conftest_s=' .text
2951 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2954 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2955 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2957 [AC_DEFINE(HAVE_AS_REL16, 1,
2958 [Define if your assembler supports R_PPC_REL16 relocs.])])
2961 *-*-aix*) conftest_s=' .machine "pwr6"
2964 *) conftest_s=' .machine power6
2969 gcc_GAS_CHECK_FEATURE([compare bytes support],
2970 gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
2972 [AC_DEFINE(HAVE_AS_CMPB, 1,
2973 [Define if your assembler supports cmpb.])])
2976 *-*-aix*) conftest_s=' .machine "pwr6"
2979 *) conftest_s=' .machine power6
2984 gcc_GAS_CHECK_FEATURE([decimal float support],
2985 gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
2987 [AC_DEFINE(HAVE_AS_DFP, 1,
2988 [Define if your assembler supports DFP instructions.])])
2990 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
2991 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
2992 [.gnu_attribute 4,1],,
2993 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
2994 [Define if your assembler supports .gnu_attribute.])])
2998 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2999 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3000 [ lw $4,%gp_rel(foo)($4)],,
3001 [if test x$target_cpu_default = x
3002 then target_cpu_default=MASK_EXPLICIT_RELOCS
3003 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3005 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3006 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3007 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3008 [Define if the assembler understands -mno-shared.])])
3010 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3011 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3012 [.gnu_attribute 4,1],,
3013 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3014 [Define if your assembler supports .gnu_attribute.])])
3016 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3017 gcc_cv_as_mips_dtprelword, [2,18,0],,
3018 [.section .tdata,"awT",@progbits
3022 .dtprelword x+0x8000],,
3023 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3024 [Define if your assembler supports .dtprelword.])])
3028 # Mips and HP-UX need the GNU assembler.
3029 # Linux on IA64 might be able to use the Intel assembler.
3032 mips*-*-* | *-*-hpux* )
3033 if test x$gas_flag = xyes \
3034 || test x"$host" != x"$build" \
3035 || test ! -x "$gcc_cv_as" \
3036 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3039 echo "*** This configuration requires the GNU assembler" >&2
3045 # ??? Not all targets support dwarf2 debug_line, even within a version
3046 # of gas. Moreover, we need to emit a valid instruction to trigger any
3047 # info to the output file. So, as supported targets are added to gas 2.11,
3048 # add some instruction here to (also) show we expect this might work.
3049 # ??? Once 2.11 is released, probably need to add first known working
3050 # version to the per-target configury.
3052 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3053 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
3054 | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-* | spu-*-*)
3057 ia64*-*-* | s390*-*-*)
3064 if test x"$insn" != x; then
3066 .file 1 \"conftest.s\"
3069 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3070 gcc_cv_as_dwarf2_debug_line,
3071 [elf,2,11,0],, [$conftest_s],
3072 [if test x$gcc_cv_objdump != x \
3073 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3074 | grep debug_line > /dev/null 2>&1; then
3075 gcc_cv_as_dwarf2_debug_line=yes
3078 # The .debug_line file table must be in the exact order that
3079 # we specified the files, since these indices are also used
3080 # by DW_AT_decl_file. Approximate this test by testing if
3081 # the assembler bitches if the same index is assigned twice.
3082 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3083 gcc_cv_as_dwarf2_file_buggy,,,
3087 if test $gcc_cv_as_dwarf2_debug_line = yes \
3088 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3089 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3090 [Define if your assembler supports dwarf2 .file/.loc directives,
3091 and preserves file table indices exactly as given.])
3094 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3095 gcc_cv_as_gdwarf2_flag,
3096 [elf,2,11,0], [--gdwarf2], [$insn],,
3097 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3098 [Define if your assembler supports the --gdwarf2 option.])])
3100 gcc_GAS_CHECK_FEATURE([--gstabs option],
3101 gcc_cv_as_gstabs_flag,
3102 [elf,2,11,0], [--gstabs], [$insn],
3103 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3104 # and warns about it, but still exits successfully. So check for
3106 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3108 else gcc_cv_as_gstabs_flag=yes
3110 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3111 [Define if your assembler supports the --gstabs option.])])
3113 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3114 gcc_cv_as_debug_prefix_map_flag,
3115 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3116 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3117 [Define if your assembler supports the --debug-prefix-map option.])])
3120 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3121 [gcc_cv_as_line_zero],
3122 [gcc_cv_as_line_zero=no
3123 if test $in_tree_gas = yes; then
3124 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3125 elif test "x$gcc_cv_as" != x; then
3126 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3127 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3128 test "x`cat conftest.out`" = x
3130 gcc_cv_as_line_zero=yes
3132 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3133 cat conftest.s >&AS_MESSAGE_LOG_FD
3134 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3135 cat conftest.out >&AS_MESSAGE_LOG_FD
3137 rm -f conftest.o conftest.s conftest.out
3139 if test "x$gcc_cv_as_line_zero" = xyes; then
3140 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3141 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3144 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3145 gcc_cv_ld_ro_rw_mix=unknown
3146 if test $in_tree_ld = yes ; then
3147 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3148 && test $in_tree_ld_is_elf = yes; then
3149 gcc_cv_ld_ro_rw_mix=read-write
3151 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3152 echo '.section myfoosect, "a"' > conftest1.s
3153 echo '.section myfoosect, "aw"' > conftest2.s
3154 echo '.byte 1' >> conftest2.s
3155 echo '.section myfoosect, "a"' > conftest3.s
3156 echo '.byte 0' >> conftest3.s
3157 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3158 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3159 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3160 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3161 conftest2.o conftest3.o > /dev/null 2>&1; then
3162 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3163 | sed -e '/myfoosect/!d' -e N`
3164 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3165 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3166 gcc_cv_ld_ro_rw_mix=read-only
3168 gcc_cv_ld_ro_rw_mix=read-write
3173 rm -f conftest.* conftest[123].*
3176 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3177 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3178 [Define if your linker links a mix of read-only
3179 and read-write sections into a read-write section.])
3181 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3183 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3184 gcc_cv_ld_eh_frame_hdr=no
3185 if test $in_tree_ld = yes ; then
3186 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3187 && test $in_tree_ld_is_elf = yes; then
3188 gcc_cv_ld_eh_frame_hdr=yes
3190 elif test x$gcc_cv_ld != x; then
3191 # Check if linker supports --eh-frame-hdr option
3192 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3193 gcc_cv_ld_eh_frame_hdr=yes
3196 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3197 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3198 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3199 [Define if your linker supports --eh-frame-hdr option.])
3201 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3203 AC_MSG_CHECKING(linker position independent executable support)
3205 if test $in_tree_ld = yes ; then
3206 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3207 && test $in_tree_ld_is_elf = yes; then
3210 elif test x$gcc_cv_ld != x; then
3211 # Check if linker supports -pie option
3212 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3216 if test x"$gcc_cv_ld_pie" = xyes; then
3217 AC_DEFINE(HAVE_LD_PIE, 1,
3218 [Define if your linker supports -pie option.])
3220 AC_MSG_RESULT($gcc_cv_ld_pie)
3222 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3223 gcc_cv_ld_eh_gc_sections=no
3224 if test $in_tree_ld = yes ; then
3225 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3226 && test $in_tree_ld_is_elf = yes; then
3227 gcc_cv_ld_eh_gc_sections=yes
3229 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3230 cat > conftest.s <<EOF
3233 .type _start, @function
3236 .size _start, .-_start
3237 .section .text.foo,"ax",@progbits
3238 .type foo, @function
3242 .section .gcc_except_table.foo,"a",@progbits
3245 .section .eh_frame,"a",@progbits
3248 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3249 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3250 | grep "gc-sections option ignored" > /dev/null; then
3251 gcc_cv_ld_eh_gc_sections=no
3252 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3253 gcc_cv_ld_eh_gc_sections=yes
3254 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3255 if test x$gcc_cv_as_comdat_group != xyes; then
3256 gcc_cv_ld_eh_gc_sections=no
3257 cat > conftest.s <<EOF
3260 .type _start, @function
3263 .size _start, .-_start
3264 .section .gnu.linkonce.t.foo,"ax",@progbits
3265 .type foo, @function
3269 .section .gcc_except_table.foo,"a",@progbits
3272 .section .eh_frame,"a",@progbits
3275 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3276 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3277 | grep "gc-sections option ignored" > /dev/null; then
3278 gcc_cv_ld_eh_gc_sections=no
3279 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3280 gcc_cv_ld_eh_gc_sections=yes
3286 rm -f conftest.s conftest.o conftest
3290 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3291 gcc_cv_ld_eh_gc_sections=no
3294 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3295 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3296 [Define if your linker supports garbage collection of
3297 sections in presence of EH frames.])
3299 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3305 AC_CACHE_CHECK(linker --as-needed support,
3306 gcc_cv_ld_as_needed,
3307 [gcc_cv_ld_as_needed=no
3308 if test $in_tree_ld = yes ; then
3309 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3310 && test $in_tree_ld_is_elf = yes; then
3311 gcc_cv_ld_as_needed=yes
3313 elif test x$gcc_cv_ld != x; then
3314 # Check if linker supports --as-needed and --no-as-needed options
3315 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3316 gcc_cv_ld_as_needed=yes
3320 if test x"$gcc_cv_ld_as_needed" = xyes; then
3321 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3322 [Define if your linker supports --as-needed and --no-as-needed options.])
3325 case "$target:$tm_file" in
3326 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3327 AC_CACHE_CHECK(linker support for omitting dot symbols,
3328 gcc_cv_ld_no_dot_syms,
3329 [gcc_cv_ld_no_dot_syms=no
3330 if test $in_tree_ld = yes ; then
3331 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3332 gcc_cv_ld_no_dot_syms=yes
3334 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3335 cat > conftest1.s <<EOF
3339 cat > conftest2.s <<EOF
3340 .section ".opd","aw"
3345 .quad .LEfoo,.TOC.@tocbase,0
3351 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3352 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3353 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3354 gcc_cv_ld_no_dot_syms=yes
3356 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3359 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3360 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3361 [Define if your PowerPC64 linker only needs function descriptor syms.])
3366 AC_CACHE_CHECK(linker --sysroot support,
3368 [gcc_cv_ld_sysroot=no
3369 if test $in_tree_ld = yes ; then
3370 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3371 gcc_cv_ld_sysroot=yes
3373 elif test x$gcc_cv_ld != x; then
3374 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3375 gcc_cv_ld_sysroot=yes
3378 if test x"$gcc_cv_ld_sysroot" = xyes; then
3379 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3380 [Define if your linker supports --sysroot.])
3383 if test x$with_sysroot = x && test x$host = x$target \
3384 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3385 && test "$prefix" != "NONE"; then
3386 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3387 [Define to PREFIX/include if cpp should also search that directory.])
3390 # Test for stack protector support in target C library.
3391 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3392 gcc_cv_libc_provides_ssp,
3393 [gcc_cv_libc_provides_ssp=no
3396 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3397 if test "x$with_sysroot" = x; then
3398 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3399 elif test "x$with_build_sysroot" != "x"; then
3400 glibc_header_dir="${with_build_sysroot}/usr/include"
3401 elif test "x$with_sysroot" = xyes; then
3402 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3404 glibc_header_dir="${with_sysroot}/usr/include"
3407 glibc_header_dir=/usr/include
3409 # glibc 2.4 and later provides __stack_chk_fail and
3410 # either __stack_chk_guard, or TLS access to stack guard canary.
3411 if test -f $glibc_header_dir/features.h \
3412 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3413 $glibc_header_dir/features.h > /dev/null; then
3414 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3415 $glibc_header_dir/features.h > /dev/null; then
3416 gcc_cv_libc_provides_ssp=yes
3417 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3418 $glibc_header_dir/features.h > /dev/null \
3419 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3420 $glibc_header_dir/features.h > /dev/null; then
3421 gcc_cv_libc_provides_ssp=yes
3422 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
3423 $glibc_header_dir/features.h > /dev/null && \
3424 test -f $glibc_header_dir/bits/uClibc_config.h && \
3425 $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
3426 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
3427 gcc_cv_libc_provides_ssp=yes
3432 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3433 [echo "no __stack_chk_fail on this target"])
3435 *) gcc_cv_libc_provides_ssp=no ;;
3438 if test x$gcc_cv_libc_provides_ssp = xyes; then
3439 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3440 [Define if your target C library provides stack protector support])
3443 # Check if TFmode long double should be used by default or not.
3444 # Some glibc targets used DFmode long double, but with glibc 2.4
3445 # and later they can use TFmode.
3447 powerpc*-*-linux* | \
3452 AC_ARG_WITH(long-double-128,
3453 [ --with-long-double-128 Use 128-bit long double by default.],
3454 gcc_cv_target_ldbl128="$with_long_double_128",
3455 [gcc_cv_target_ldbl128=no
3456 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3457 if test "x$with_sysroot" = x; then
3458 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3459 elif test "x$with_build_sysroot" != "x"; then
3460 glibc_header_dir="${with_build_sysroot}/usr/include"
3461 elif test "x$with_sysroot" = xyes; then
3462 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3464 glibc_header_dir="${with_sysroot}/usr/include"
3467 glibc_header_dir=/usr/include
3470 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3471 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3472 && gcc_cv_target_ldbl128=yes
3477 if test x$gcc_cv_target_ldbl128 = xyes; then
3478 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3479 [Define if TFmode long double should be the default])
3482 # Find out what GC implementation we want, or may, use.
3484 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3492 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3495 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3500 echo "Using $GGC for garbage collection."
3502 # Use the system's zlib library.
3504 zlibinc="-I\$(srcdir)/../zlib"
3505 AC_ARG_WITH(system-zlib,
3506 [ --with-system-zlib use installed libz],
3513 dnl Very limited version of automake's enable-maintainer-mode
3515 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3516 dnl maintainer-mode is disabled by default
3517 AC_ARG_ENABLE(maintainer-mode,
3518 [ --enable-maintainer-mode
3519 enable make rules and dependencies not useful
3520 (and sometimes confusing) to the casual installer],
3521 maintainer_mode=$enableval,
3524 AC_MSG_RESULT($maintainer_mode)
3526 if test "$maintainer_mode" = "yes"; then
3537 # Make empty files to contain the specs and options for each language.
3538 # Then add #include lines to for a compiler that has specs and/or options.
3544 # These (without "all_") are set in each config-lang.in.
3545 # `language' must be a single word so is spelled singularly.
3548 all_outputs='Makefile gccbug libada-mk'
3549 # List of language makefile fragments.
3551 # List of language subdirectory makefiles. Deprecated.
3553 # Additional files for gengtype
3554 all_gtfiles="$target_gtfiles"
3556 # These are the languages that are set in --enable-languages,
3557 # and are available in the GCC tree.
3558 all_selected_languages=
3560 # Add the language fragments.
3561 # Languages are added via two mechanisms. Some information must be
3562 # recorded in makefile variables, these are defined in config-lang.in.
3563 # We accumulate them and plug them into the main Makefile.
3564 # The other mechanism is a set of hooks for each of the main targets
3565 # like `clean', `install', etc.
3567 language_hooks="Make-hooks"
3569 for lang in ${srcdir}/*/config-lang.in
3572 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3574 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3575 if test "x$lang_alias" = x
3577 echo "$lang doesn't set \$language." 1>&2
3580 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3581 subdirs="$subdirs $subdir"
3582 case ",$enable_languages," in
3584 all_selected_languages="$all_selected_languages $lang_alias"
3585 if test -f $srcdir/$subdir/lang-specs.h; then
3586 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3598 . ${srcdir}/$subdir/config-lang.in
3599 if test "x$language" = x
3601 echo "${srcdir}/$subdir/config-lang.in doesn't set \$language." 1>&2
3606 case ",$enable_languages," in
3609 for i in $subdir_requires; do
3610 test -f "${srcdir}/$i/config-lang.in" && continue
3618 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$subdir/Make-lang.in"
3619 if test -f $srcdir/$subdir/lang.opt; then
3620 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3622 if test -f $srcdir/$subdir/$subdir-tree.def; then
3623 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3625 if test -f ${srcdir}/$subdir/Makefile.in
3626 then all_lang_makefiles="$subdir/Makefile"
3628 all_languages="$all_languages $language"
3629 all_compilers="$all_compilers $compilers"
3630 all_outputs="$all_outputs $outputs"
3631 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
3634 # Pick up gtfiles for c
3636 . ${srcdir}/c-config-lang.in
3637 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
3640 for language in $all_selected_languages
3642 check_languages="$check_languages check-$language"
3645 # We link each language in with a set of hooks, reached indirectly via
3646 # lang.${target}. Only do so for selected languages.
3650 target_list="all.cross start.encap rest.encap tags \
3651 install-common install-man install-info install-pdf dvi pdf \
3652 html uninstall info man srcextra srcman srcinfo \
3653 mostlyclean clean distclean maintainer-clean"
3655 for t in $target_list
3658 for lang in $all_selected_languages
3662 echo "lang.$t: $x" >> Make-hooks
3671 echo "dir ." > .gdbinit
3672 echo "dir ${srcdir}" >> .gdbinit
3673 if test x$gdb_needs_out_file_path = xyes
3675 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3677 if test "x$subdirs" != x; then
3680 echo "dir ${srcdir}/$s" >> .gdbinit
3683 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3685 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
3686 AC_SUBST(gcc_tooldir)
3689 # Find a directory in which to install a shared libgcc.
3691 AC_ARG_ENABLE(version-specific-runtime-libs,
3692 [ --enable-version-specific-runtime-libs
3693 specify that runtime libraries should be
3694 installed in a compiler-specific directory])
3696 AC_ARG_WITH(slibdir,
3697 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3698 slibdir="$with_slibdir",
3699 if test "${enable_version_specific_runtime_libs+set}" = set; then
3700 slibdir='$(libsubdir)'
3701 elif test "$host" != "$target"; then
3702 slibdir='$(build_tooldir)/lib'
3708 AC_ARG_WITH(datarootdir,
3709 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3710 datarootdir="\${prefix}/$with_datarootdir",
3711 datarootdir='$(prefix)/share')
3712 AC_SUBST(datarootdir)
3715 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3716 docdir="\${prefix}/$with_docdir",
3717 docdir='$(datarootdir)')
3720 AC_ARG_WITH(htmldir,
3721 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3722 htmldir="\${prefix}/$with_htmldir",
3723 htmldir='$(docdir)')
3726 # Substitute configuration variables
3729 AC_SUBST(all_compilers)
3730 AC_SUBST(all_gtfiles)
3731 AC_SUBST(all_lang_makefrags)
3732 AC_SUBST(all_lang_makefiles)
3733 AC_SUBST(all_languages)
3734 AC_SUBST(all_selected_languages)
3735 AC_SUBST(build_exeext)
3736 AC_SUBST(build_install_headers_dir)
3737 AC_SUBST(build_xm_file_list)
3738 AC_SUBST(build_xm_include_list)
3739 AC_SUBST(build_xm_defines)
3740 AC_SUBST(build_file_translate)
3741 AC_SUBST(check_languages)
3742 AC_SUBST(cpp_install_dir)
3743 AC_SUBST(xmake_file)
3744 AC_SUBST(tmake_file)
3745 AC_SUBST(extra_gcc_objs)
3746 AC_SUBST(extra_headers_list)
3747 AC_SUBST(extra_objs)
3748 AC_SUBST(extra_parts)
3749 AC_SUBST(extra_passes)
3750 AC_SUBST(extra_programs)
3751 AC_SUBST(float_h_file)
3752 AC_SUBST(gcc_config_arguments)
3753 AC_SUBST(gcc_gxx_include_dir)
3754 AC_SUBST(host_exeext)
3755 AC_SUBST(host_xm_file_list)
3756 AC_SUBST(host_xm_include_list)
3757 AC_SUBST(host_xm_defines)
3758 AC_SUBST(out_host_hook_obj)
3760 AC_SUBST(lang_opt_files)
3761 AC_SUBST(lang_specs_files)
3762 AC_SUBST(lang_tree_files)
3763 AC_SUBST(local_prefix)
3765 AC_SUBST(objc_boehm_gc)
3767 AC_SUBST(out_object_file)
3768 AC_SUBST(thread_file)
3769 AC_SUBST(tm_file_list)
3770 AC_SUBST(tm_include_list)
3771 AC_SUBST(tm_defines)
3772 AC_SUBST(tm_p_file_list)
3773 AC_SUBST(tm_p_include_list)
3774 AC_SUBST(xm_file_list)
3775 AC_SUBST(xm_include_list)
3776 AC_SUBST(xm_defines)
3777 AC_SUBST(c_target_objs)
3778 AC_SUBST(cxx_target_objs)
3779 AC_SUBST(target_cpu_default)
3781 AC_SUBST_FILE(language_hooks)
3784 if test x${build} = x${host} ; then
3785 if test x${host} = x${target} ; then
3786 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3788 echo "Links are now set up to build a cross-compiler" 1>&2
3789 echo " from ${host} to ${target}." 1>&2
3792 if test x${host} = x${target} ; then
3793 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3794 echo " for ${target}." 1>&2
3796 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3797 echo " from ${host} to ${target}." 1>&2
3801 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3802 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3804 # Configure the subdirectories
3805 # AC_CONFIG_SUBDIRS($subdirs)
3807 # Create the Makefile
3808 # and configure language subdirectories
3809 AC_CONFIG_FILES($all_outputs)
3811 AC_CONFIG_COMMANDS([default],
3813 case ${CONFIG_HEADERS} in
3814 *auto-host.h:config.in*)
3817 # Make sure all the subdirs exist.
3818 for d in $subdirs doc build
3820 test -d $d || mkdir $d
3823 [subdirs='$subdirs'])