2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
5 # 2007, 2008 Free Software Foundation, Inc.
7 #This file is part of GCC.
9 #GCC is free software; you can redistribute it and/or modify it under
10 #the terms of the GNU General Public License as published by the Free
11 #Software Foundation; either version 3, or (at your option) any later
14 #GCC is distributed in the hope that it will be useful, but WITHOUT
15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 #You should have received a copy of the GNU General Public License
20 #along with GCC; see the file COPYING3. If not see
21 #<http://www.gnu.org/licenses/>.
23 # --------------------------------
24 # Initialization and sanity checks
25 # --------------------------------
29 AC_CONFIG_SRCDIR(tree.c)
30 AC_CONFIG_HEADER(auto-host.h:config.in)
32 gcc_version=`cat $srcdir/BASE-VER`
34 # Determine the host, build, and target systems
39 # Determine the noncanonical target name, for directory use.
40 ACX_NONCANONICAL_TARGET
42 # Determine the target- and build-specific subdirectories
45 # Set program_transform_name
48 # Check for bogus environment variables.
49 # Test if LIBRARY_PATH contains the notation for the current directory
50 # since this would lead to problems installing/building glibc.
51 # LIBRARY_PATH contains the current directory if one of the following
53 # - one of the terminals (":" and ";") is the first or last sign
54 # - two terminals occur directly after each other
55 # - the path contains an element with a dot in it
56 AC_MSG_CHECKING(LIBRARY_PATH variable)
58 case ${LIBRARY_PATH} in
59 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
60 library_path_setting="contains current directory"
63 library_path_setting="ok"
67 AC_MSG_RESULT($library_path_setting)
68 if test "$library_path_setting" != "ok"; then
70 *** LIBRARY_PATH shouldn't contain the current directory when
71 *** building gcc. Please change the environment variable
72 *** and run configure again.])
75 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
76 # since this would lead to problems installing/building glibc.
77 # GCC_EXEC_PREFIX contains the current directory if one of the following
79 # - one of the terminals (":" and ";") is the first or last sign
80 # - two terminals occur directly after each other
81 # - the path contains an element with a dot in it
82 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
84 case ${GCC_EXEC_PREFIX} in
85 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
86 gcc_exec_prefix_setting="contains current directory"
89 gcc_exec_prefix_setting="ok"
93 AC_MSG_RESULT($gcc_exec_prefix_setting)
94 if test "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [ --with-local-prefix=DIR specifies directory to put local include],
109 [case "${withval}" in
110 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
112 *) local_prefix=$with_local_prefix ;;
115 # Default local prefix if it is empty
116 if test x$local_prefix = x; then
117 local_prefix=/usr/local
120 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
121 # passed in by the toplevel make and thus we'd get different behavior
122 # depending on where we built the sources.
124 # Specify the g++ header file directory
125 AC_ARG_WITH(gxx-include-dir,
126 [ --with-gxx-include-dir=DIR
127 specifies directory to put g++ header files],
128 [case "${withval}" in
129 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
131 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
134 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
135 if test x${gcc_gxx_include_dir} = x; then
136 if test x${enable_version_specific_runtime_libs} = xyes; then
137 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 libstdcxx_incdir='include/c++/$(version)'
140 if test x$host != x$target; then
141 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
143 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
147 AC_ARG_WITH(cpp_install_dir,
148 [ --with-cpp-install-dir=DIR
149 install the user visible C preprocessor in DIR
150 (relative to PREFIX) as well as PREFIX/bin],
151 [if test x$withval = xyes; then
152 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
153 elif test x$withval != xno; then
154 cpp_install_dir=$withval
157 # We would like to our source tree to be readonly. However when releases or
158 # pre-releases are generated, the flex/bison generated files as well as the
159 # various formats of manuals need to be included along with the rest of the
160 # sources. Therefore we have --enable-generated-files-in-srcdir to do
163 AC_MSG_CHECKING([whether to place generated files in the source directory])
164 dnl generated-files-in-srcdir is disabled by default
165 AC_ARG_ENABLE(generated-files-in-srcdir,
166 [ --enable-generated-files-in-srcdir
167 put copies of generated files in source dir
168 intended for creating source tarballs for users
169 without texinfo bison or flex.],
170 generated_files_in_srcdir=$enableval,
171 generated_files_in_srcdir=no)
173 AC_MSG_RESULT($generated_files_in_srcdir)
175 if test "$generated_files_in_srcdir" = "yes"; then
182 # -------------------
183 # Find default linker
184 # -------------------
188 [ --with-gnu-ld arrange to work with GNU ld.],
189 gnu_ld_flag="$with_gnu_ld",
192 # With pre-defined ld
194 [ --with-ld arrange to use the specified ld (full pathname)],
195 DEFAULT_LINKER="$with_ld")
196 if test x"${DEFAULT_LINKER+set}" = x"set"; then
197 if test ! -x "$DEFAULT_LINKER"; then
198 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
199 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
202 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
203 [Define to enable the use of a default linker.])
206 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
207 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
209 AC_MSG_CHECKING([whether a default linker was specified])
210 if test x"${DEFAULT_LINKER+set}" = x"set"; then
211 if test x"$gnu_ld_flag" = x"no"; then
212 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
214 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
220 # With demangler in GNU ld
221 AC_ARG_WITH(demangler-in-ld,
222 [ --with-demangler-in-ld try to use demangler in GNU ld.],
223 demangler_in_ld="$with_demangler_in_ld",
226 # ----------------------
227 # Find default assembler
228 # ----------------------
232 [ --with-gnu-as arrange to work with GNU as],
233 gas_flag="$with_gnu_as",
237 [ --with-as arrange to use the specified as (full pathname)],
238 DEFAULT_ASSEMBLER="$with_as")
239 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
240 if test ! -x "$DEFAULT_ASSEMBLER"; then
241 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
242 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
245 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
246 [Define to enable the use of a default assembler.])
249 gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
250 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
252 AC_MSG_CHECKING([whether a default assembler was specified])
253 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
254 if test x"$gas_flag" = x"no"; then
255 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
257 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
267 # If a non-executable a.out is present (e.g. created by GNU as above even if
268 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
269 # file, even when creating an executable, so an execution test fails.
270 # Remove possible default executable files to avoid this.
272 # FIXME: This really belongs into AC_PROG_CC and can be removed once
273 # Autoconf includes it.
274 rm -f a.out a.exe b.out
276 # Find the native compiler
279 ACX_PROG_GNAT([-I"$srcdir"/ada])
281 # autoconf is lame and doesn't give us any substitution variable for this.
282 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
283 NO_MINUS_C_MINUS_O=yes
285 OUTPUT_OPTION='-o $@'
287 AC_SUBST(NO_MINUS_C_MINUS_O)
288 AC_SUBST(OUTPUT_OPTION)
290 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
291 # optimizations to be activated explicitly by the toplevel.
294 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
298 # -------------------------
299 # Check C compiler features
300 # -------------------------
302 AC_USE_SYSTEM_EXTENSIONS
306 # sizeof(char) is 1 by definition.
307 AC_CHECK_SIZEOF(void *)
308 AC_CHECK_SIZEOF(short)
310 AC_CHECK_SIZEOF(long)
311 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
312 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
314 # ---------------------
315 # Warnings and checking
316 # ---------------------
318 # Check $CC warning features (if it's GCC).
319 # We want to use -pedantic, but we don't want warnings about
323 # So, we only use -pedantic if we can disable those warnings.
325 ACX_PROG_CC_WARNING_OPTS(
326 m4_quote(m4_do([-W -Wall -Wwrite-strings -Wstrict-prototypes ],
327 [-Wmissing-prototypes -Wcast-qual])), [loose_warn])
328 ACX_PROG_CC_WARNING_OPTS(
329 m4_quote(m4_do([-Wold-style-definition -Wc++-compat ],
330 [-Wmissing-format-attribute])), [strict_warn])
331 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
332 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
333 [-Wno-overlength-strings])), [strict_warn])
334 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
336 # The above macros do nothing if the compiler is not GCC. However, the
337 # Makefile has more goo to add other flags, so this variabl is used to
338 # enables warnings only for GCC.
340 if test "x$GCC" = "xyes"; then
341 warn_cflags='$(GCC_WARN_CFLAGS)'
343 AC_SUBST(warn_cflags)
345 # Enable expensive internal checks
347 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
351 AC_ARG_ENABLE(checking,
352 [ --enable-checking[=LIST]
353 enable expensive run-time checks. With LIST,
354 enable only specific categories of checks.
355 Categories are: yes,no,all,none,release.
356 Flags are: assert,df,fold,gc,gcac,gimple,misc,
357 rtlflag,rtl,runtime,tree,valgrind,types.],
358 [ac_checking_flags="${enableval}"],[
359 # Determine the default checks.
360 if test x$is_release = x ; then
361 ac_checking_flags=yes
363 ac_checking_flags=release
365 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
366 for check in release $ac_checking_flags
369 # these set all the flags to specific states
370 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
371 ac_fold_checking= ; ac_gc_checking=1 ;
372 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
373 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
374 ac_tree_checking=1 ; ac_valgrind_checking= ;
375 ac_types_checking=1 ;;
376 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
377 ac_fold_checking= ; ac_gc_checking= ;
378 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
379 ac_rtlflag_checking= ; ac_runtime_checking= ;
380 ac_tree_checking= ; ac_valgrind_checking= ;
381 ac_types_checking= ;;
382 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
383 ac_fold_checking=1 ; ac_gc_checking=1 ;
384 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
385 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
386 ac_tree_checking=1 ; ac_valgrind_checking= ;
387 ac_types_checking=1 ;;
388 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
389 ac_fold_checking= ; ac_gc_checking= ;
390 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
391 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
392 ac_tree_checking= ; ac_valgrind_checking= ;
393 ac_types_checking= ;;
394 # these enable particular checks
395 assert) ac_assert_checking=1 ;;
396 df) ac_df_checking=1 ;;
397 fold) ac_fold_checking=1 ;;
398 gc) ac_gc_checking=1 ;;
399 gcac) ac_gc_always_collect=1 ;;
400 gimple) ac_gimple_checking=1 ;;
401 misc) ac_checking=1 ;;
402 rtl) ac_rtl_checking=1 ;;
403 rtlflag) ac_rtlflag_checking=1 ;;
404 runtime) ac_runtime_checking=1 ;;
405 tree) ac_tree_checking=1 ;;
406 types) ac_types_checking=1 ;;
407 valgrind) ac_valgrind_checking=1 ;;
408 *) AC_MSG_ERROR(unknown check category $check) ;;
414 if test x$ac_checking != x ; then
415 AC_DEFINE(ENABLE_CHECKING, 1,
416 [Define if you want more run-time sanity checks. This one gets a grab
417 bag of miscellaneous but relatively cheap checks.])
418 nocommon_flag=-fno-common
420 AC_SUBST(nocommon_flag)
421 if test x$ac_df_checking != x ; then
422 AC_DEFINE(ENABLE_DF_CHECKING, 1,
423 [Define if you want more run-time sanity checks for dataflow.])
425 if test x$ac_assert_checking != x ; then
426 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
427 [Define if you want assertions enabled. This is a cheap check.])
429 if test x$ac_gimple_checking != x ; then
430 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
431 [Define if you want operations on GIMPLE (the basic data structure of
432 the high-level optimizers) to be checked for dynamic type safety at
433 runtime. This is moderately expensive.])
435 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
436 if test x$ac_runtime_checking != x ; then
437 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
438 [Define if you want runtime assertions enabled. This is a cheap check.])
440 if test x$ac_tree_checking != x ; then
441 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
442 [Define if you want all operations on trees (the basic data
443 structure of the front ends) to be checked for dynamic type safety
444 at runtime. This is moderately expensive. The tree browser debugging
445 routines will also be enabled by this option.
447 TREEBROWSER=tree-browser.o
449 if test x$ac_types_checking != x ; then
450 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
451 [Define if you want all gimple types to be verified after gimplifiation.
455 AC_SUBST(TREEBROWSER)
456 if test x$ac_rtl_checking != x ; then
457 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
458 [Define if you want all operations on RTL (the basic data structure
459 of the optimizer and back end) to be checked for dynamic type safety
460 at runtime. This is quite expensive.])
462 if test x$ac_rtlflag_checking != x ; then
463 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
464 [Define if you want RTL flag accesses to be checked against the RTL
465 codes that are supported for each access macro. This is relatively
468 if test x$ac_gc_checking != x ; then
469 AC_DEFINE(ENABLE_GC_CHECKING, 1,
470 [Define if you want the garbage collector to do object poisoning and
471 other memory allocation checks. This is quite expensive.])
473 if test x$ac_gc_always_collect != x ; then
474 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
475 [Define if you want the garbage collector to operate in maximally
476 paranoid mode, validating the entire heap and collecting garbage at
477 every opportunity. This is extremely expensive.])
479 if test x$ac_fold_checking != x ; then
480 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
481 [Define if you want fold checked that it never destructs its argument.
482 This is quite expensive.])
484 valgrind_path_defines=
487 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
488 dnl # an if statement. This was the source of very frustrating bugs
489 dnl # in converting to autoconf 2.5x!
490 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
492 if test x$ac_valgrind_checking != x ; then
493 # It is certainly possible that there's valgrind but no valgrind.h.
494 # GCC relies on making annotations so we must have both.
495 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
496 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
497 [[#include <valgrind/memcheck.h>
498 #ifndef VALGRIND_DISCARD
499 #error VALGRIND_DISCARD not defined
501 [gcc_cv_header_valgrind_memcheck_h=yes],
502 [gcc_cv_header_valgrind_memcheck_h=no])
503 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
504 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
505 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
506 [[#include <memcheck.h>
507 #ifndef VALGRIND_DISCARD
508 #error VALGRIND_DISCARD not defined
510 [gcc_cv_header_memcheck_h=yes],
511 [gcc_cv_header_memcheck_h=no])
512 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
513 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
514 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
515 if test "x$valgrind_path" = "x" \
516 || (test $have_valgrind_h = no \
517 && test $gcc_cv_header_memcheck_h = no \
518 && test $gcc_cv_header_valgrind_memcheck_h = no); then
519 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
521 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
522 valgrind_command="$valgrind_path -q"
523 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
524 [Define if you want to run subprograms and generated programs
525 through valgrind (a memory checker). This is extremely expensive.])
526 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
527 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
528 [Define if valgrind's valgrind/memcheck.h header is installed.])
530 if test $gcc_cv_header_memcheck_h = yes; then
531 AC_DEFINE(HAVE_MEMCHECK_H, 1,
532 [Define if valgrind's memcheck.h header is installed.])
535 AC_SUBST(valgrind_path_defines)
536 AC_SUBST(valgrind_command)
538 # Enable code coverage collection
539 AC_ARG_ENABLE(coverage,
540 [ --enable-coverage[=LEVEL]
541 enable compiler's code coverage collection.
542 Use to measure compiler performance and locate
543 unused parts of the compiler. With LEVEL, specify
544 optimization. Values are opt, noopt,
546 [case "${enableval}" in
548 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
551 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
554 # a.k.a. --disable-coverage
558 AC_MSG_ERROR(unknown coverage setting $enableval)
562 AC_SUBST(coverage_flags)
564 AC_ARG_ENABLE(gather-detailed-mem-stats,
565 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
566 [enable_gather_detailed_mem_stats=no])
567 if test x$enable_gather_detailed_mem_stats = xyes ; then
568 AC_DEFINE(GATHER_STATISTICS, 1,
569 [Define to enable detailed memory allocation stats gathering.])
572 # -------------------------------
573 # Miscenalleous configure options
574 # -------------------------------
578 [ --with-stabs arrange to use stabs instead of host debug format],
582 # Determine whether or not multilibs are enabled.
583 AC_ARG_ENABLE(multilib,
584 [ --enable-multilib enable library support for multiple ABIs],
585 [], [enable_multilib=yes])
586 AC_SUBST(enable_multilib)
588 # Enable __cxa_atexit for C++.
589 AC_ARG_ENABLE(__cxa_atexit,
590 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
593 # Enable C extension for decimal float if target supports it.
594 AC_ARG_ENABLE(decimal-float,
595 [ --enable-decimal-float={no,yes,bid,dpd}
596 enable decimal float extension to C. Selecting 'bid'
597 or 'dpd' choses which decimal floating point format
600 case $enable_decimal_float in
601 yes | no | bid | dpd) ;;
602 *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
603 Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
608 powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
609 enable_decimal_float=yes
612 AC_MSG_WARN(decimal float is not supported for this target, ignored)
613 enable_decimal_float=no
618 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
619 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
620 [Define to 1 to enable decimal float extension to C.])
622 # x86's use BID format instead of DPD
623 case x$enable_decimal_float in
626 i?86*-*-linux* | x86_64*-*-linux*)
627 enable_decimal_float=bid
630 enable_decimal_float=dpd
635 # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
636 # dependency on libdecnumber.
637 enable_decimal_float=dpd
640 AC_SUBST(enable_decimal_float)
642 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
643 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
644 [Define to 1 to specify that we are using the BID decimal floating
645 point format instead of DPD])
647 # Enable C extension for fixed-point arithmetic.
648 AC_ARG_ENABLE(fixed-point,
649 [ --enable-fixed-point enable fixed-point arithmetic extension to C],
657 AC_MSG_WARN(fixed-point is not supported on IRIX, ignored)
658 enable_fixed_point=no
661 enable_fixed_point=yes
666 AC_MSG_WARN(fixed-point is not supported for this target, ignored)
667 enable_fixed_point=no
671 AC_SUBST(enable_fixed_point)
673 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
674 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
675 [Define to 1 to enable fixed-point arithmetic extension to C.])
678 # Pass with no value to take the default
679 # Pass with a value to specify a thread package
680 AC_ARG_ENABLE(threads,
681 [ --enable-threads enable thread usage for target GCC
682 --enable-threads=LIB use LIB thread package for target GCC],,
686 [ --enable-tls enable or disable generation of tls code
687 overriding the assembler check for tls support],
691 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
692 Valid choices are 'yes' and 'no'.]) ;;
696 AC_ARG_ENABLE(objc-gc,
697 [ --enable-objc-gc enable the use of Boehm's garbage collector with
698 the GNU Objective-C runtime],
699 if test x$enable_objc_gc = xno; then
707 [ --with-dwarf2 force the default debug format to be DWARF 2],
708 dwarf2="$with_dwarf2",
711 AC_ARG_ENABLE(shared,
712 [ --disable-shared don't provide a shared libgcc],
714 case $enable_shared in
718 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
719 for pkg in $enableval; do
720 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
727 ], [enable_shared=yes])
728 AC_SUBST(enable_shared)
730 AC_ARG_WITH(build-sysroot,
731 [ --with-build-sysroot=sysroot
732 use sysroot as the system root during the build])
735 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
737 case ${with_sysroot} in
738 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
739 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
742 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
743 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
745 if test "x$prefix" = xNONE; then
746 test_prefix=/usr/local
750 if test "x$exec_prefix" = xNONE; then
751 test_exec_prefix=$test_prefix
753 test_exec_prefix=$exec_prefix
755 case ${TARGET_SYSTEM_ROOT} in
756 "${test_prefix}"|"${test_prefix}/"*|\
757 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
758 '${prefix}'|'${prefix}/'*|\
759 '${exec_prefix}'|'${exec_prefix}/'*)
760 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
761 TARGET_SYSTEM_ROOT_DEFINE="$t"
766 TARGET_SYSTEM_ROOT_DEFINE=
767 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
769 AC_SUBST(TARGET_SYSTEM_ROOT)
770 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
771 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
773 # Build with intermodule optimisations
774 AC_ARG_ENABLE(intermodule,
775 [ --enable-intermodule build the compiler in one step],
776 [case ${enable_intermodule} in
777 yes) onestep="-onestep";;
783 ACX_PKGVERSION([GCC])
784 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
786 # Sanity check enable_languages in case someone does not run the toplevel
787 # configure # script.
788 AC_ARG_ENABLE(languages,
789 [ --enable-languages=LIST specify which front-ends to build],
790 [case ,${enable_languages}, in
792 # go safe -- we cannot be much sure without the toplevel
794 # analysis of which target libs are present and usable
798 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
803 enable_languages=c,${enable_languages}
806 [enable_languages=c])
808 # Used by documentation targets
809 AC_SUBST(datarootdir)
813 # -------------------------
814 # Checks for other programs
815 # -------------------------
819 # Find some useful tools
821 # We need awk to create options.c and options.h.
822 # Bail out if it's missing.
824 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
832 # By default, the Darwin ranlib will not treat common symbols as
833 # definitions when building the archive table of contents. Other
834 # ranlibs do that; pass an option to the Darwin ranlib that makes
835 # it behave similarly.
841 AC_SUBST(ranlib_flags)
845 # See if cmp has --ignore-initial.
846 gcc_AC_PROG_CMP_IGNORE_INITIAL
848 # See if we have the mktemp command.
849 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
851 # See if makeinfo has been installed and is modern enough
852 # that we can use it.
853 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
854 [GNU texinfo.* \([0-9][0-9.]*\)],
855 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
856 if test $gcc_cv_prog_makeinfo_modern = no; then
858 *** Makeinfo is missing or too old.
859 *** Info documentation will not be built.])
866 # Is pod2man recent enough to regenerate manpages?
867 AC_MSG_CHECKING([for recent Pod::Man])
868 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
870 GENERATED_MANPAGES=generated-manpages
875 AC_SUBST(GENERATED_MANPAGES)
877 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
880 dnl Don't use AC_PROG_LEX; we insist on flex.
881 dnl LEXLIB is not useful in gcc.
882 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
885 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
887 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
888 # check for build == host before using them.
891 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
892 && test -d ../binutils ; then
893 NM='$(objdir)/../binutils/nm-new'
895 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
899 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
900 && test -d ../binutils ; then
901 AR='$(objdir)/../binutils/ar'
903 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
907 # --------------------
908 # Checks for C headers
909 # --------------------
911 # Need to reject headers which give warnings, so that the -Werror bootstrap
912 # works later. *sigh* This needs to come before all header checks.
919 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
920 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
921 sys/resource.h sys/param.h sys/times.h sys/stat.h \
922 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
924 # Check for thread headers.
925 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
926 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
928 # These tests can't be done till we know if we have limits.h.
937 # These libraries may be used by collect2.
938 # We may need a special search path to get them linked.
939 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
941 for libs in '' -lld -lmld \
942 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
943 '-L/usr/lib/cmplrs/cc3.11 -lmld'
946 AC_TRY_LINK_FUNC(ldopen,
947 [gcc_cv_collect2_libs="$libs"; break])
950 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
951 case $gcc_cv_collect2_libs in
953 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
955 AC_SUBST(COLLECT2_LIBS)
957 # When building Ada code on Alpha, we need exc_resume which is usually in
958 # -lexc. So test for it.
961 AC_SEARCH_LIBS(exc_resume, exc)
964 AC_SUBST(GNAT_LIBEXC)
966 # Some systems put ldexp and frexp in libm instead of libc; assume
967 # they're both in the same place. jcf-dump needs them.
970 AC_SEARCH_LIBS(ldexp, m)
975 # Use <inttypes.h> only if it exists,
976 # doesn't clash with <sys/types.h>, and declares intmax_t.
977 AC_MSG_CHECKING(for inttypes.h)
978 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
979 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
980 [[#include <sys/types.h>
981 #include <inttypes.h>]],
982 [[intmax_t i = -1;]])],
983 [gcc_cv_header_inttypes_h=yes],
984 [gcc_cv_header_inttypes_h=no])])
985 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
986 if test $gcc_cv_header_inttypes_h = yes; then
987 AC_DEFINE(HAVE_INTTYPES_H, 1,
988 [Define if you have a working <inttypes.h> header file.])
991 dnl Disabled until we have a complete test for buggy enum bitfields.
992 dnl gcc_AC_C_ENUM_BF_UNSIGNED
994 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
995 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
996 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
997 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
998 putchar_unlocked putc_unlocked)
999 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1000 sysconf strsignal getrusage nl_langinfo \
1001 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1004 if test x$ac_cv_func_mbstowcs = xyes; then
1005 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1006 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1012 [gcc_cv_func_mbstowcs_works=yes],
1013 [gcc_cv_func_mbstowcs_works=no],
1014 [gcc_cv_func_mbstowcs_works=yes])])
1015 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1016 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1017 [Define this macro if mbstowcs does not crash when its
1018 first argument is NULL.])
1022 AC_CHECK_TYPE(ssize_t, int)
1023 AC_CHECK_TYPE(caddr_t, char *)
1025 # Try to determine the array type of the second argument of getgroups
1026 # for the target system (int or gid_t).
1028 if test "${target}" = "${build}"; then
1029 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1032 # This condition may need some tweaking. It should include all
1033 # targets where the array type of the second argument of getgroups
1034 # is int and the type of gid_t is not equivalent to int.
1035 *-*-sunos* | *-*-ultrix*)
1036 TARGET_GETGROUPS_T=int
1039 TARGET_GETGROUPS_T=gid_t
1043 AC_SUBST(TARGET_GETGROUPS_T)
1045 gcc_AC_FUNC_MMAP_BLACKLIST
1049 # Under VMS, vfork works very differently than on Unix. The standard test
1050 # won't work, and it isn't easily adaptable. It makes more sense to
1052 ac_cv_func_vfork_works=yes
1058 # Until we have in-tree GNU iconv:
1060 AC_SUBST(LIBICONV_DEP)
1066 # We will need to find libiberty.h and ansidecl.h
1067 saved_CFLAGS="$CFLAGS"
1068 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1069 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1070 strsignal strstr strverscmp \
1071 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1072 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1073 #include "ansidecl.h"
1074 #include "system.h"])
1076 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1077 #include "ansidecl.h"
1079 #ifdef HAVE_SYS_RESOURCE_H
1080 #include <sys/resource.h>
1084 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1085 #include "ansidecl.h"
1087 #ifdef HAVE_SYS_RESOURCE_H
1088 #include <sys/resource.h>
1090 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1091 [Define to `long' if <sys/resource.h> doesn't define.])])
1093 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1094 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1095 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1096 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1097 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1098 #include "ansidecl.h"
1107 gcc_AC_CHECK_DECLS(times, , ,[
1108 #include "ansidecl.h"
1110 #ifdef HAVE_SYS_TIMES_H
1111 #include <sys/times.h>
1115 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1116 #include "ansidecl.h"
1121 # More time-related stuff.
1122 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1123 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1124 #include "ansidecl.h"
1126 #ifdef HAVE_SYS_TIMES_H
1127 #include <sys/times.h>
1129 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1130 if test $ac_cv_struct_tms = yes; then
1131 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1132 [Define if <sys/times.h> defines struct tms.])
1135 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1136 # revisit after autoconf 2.50.
1137 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1138 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1139 #include "ansidecl.h"
1141 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1142 if test $gcc_cv_type_clock_t = yes; then
1143 AC_DEFINE(HAVE_CLOCK_T, 1,
1144 [Define if <time.h> defines clock_t.])
1147 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1148 CFLAGS="$saved_CFLAGS"
1150 gcc_AC_INITFINI_ARRAY
1152 # mkdir takes a single argument on some systems.
1153 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1161 # With Setjmp/Longjmp based exception handling.
1162 AC_ARG_ENABLE(sjlj-exceptions,
1163 [ --enable-sjlj-exceptions
1164 arrange to use setjmp/longjmp exception handling],
1167 if test $enableval != yes; then
1168 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1173 force_sjlj_exceptions=yes],
1176 force_sjlj_exceptions=yes
1180 force_sjlj_exceptions=no
1183 if test $force_sjlj_exceptions = yes; then
1184 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1185 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1186 [Define 0/1 to force the choice for exception handling model.])
1189 # For platforms with the unwind ABI which includes an unwind library,
1190 # libunwind, we can choose to use the system libunwind.
1191 # config.gcc also contains tests of with_system_libunwind.
1192 GCC_CHECK_UNWIND_GETIPINFO
1194 # --------------------------------------------------------
1195 # Build, host, and target specific configuration fragments
1196 # --------------------------------------------------------
1198 # Collect build-machine-specific information.
1199 . ${srcdir}/config.build
1201 # Collect host-machine-specific information.
1202 . ${srcdir}/config.host
1206 # Collect target-machine-specific information.
1207 . ${srcdir}/config.gcc
1209 extra_objs="${host_extra_objs} ${extra_objs}"
1210 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1212 # Default the target-machine variables that were not explicitly set.
1213 if test x"$tm_file" = x
1214 then tm_file=$cpu_type/$cpu_type.h; fi
1216 if test x"$extra_headers" = x
1217 then extra_headers=; fi
1219 if test x$md_file = x
1220 then md_file=$cpu_type/$cpu_type.md; fi
1222 if test x$out_file = x
1223 then out_file=$cpu_type/$cpu_type.c; fi
1225 if test x"$tmake_file" = x
1226 then tmake_file=$cpu_type/t-$cpu_type
1229 if test x"$dwarf2" = xyes
1230 then tm_file="$tm_file tm-dwarf2.h"
1233 # Say what files are being used for the output code and MD file.
1234 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1235 echo "Using \`$srcdir/config/$md_file' as machine description file."
1237 # If any of the xm_file variables contain nonexistent files, warn
1238 # about them and drop them.
1241 for x in $build_xm_file; do
1242 if test -f $srcdir/config/$x
1244 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1250 for x in $host_xm_file; do
1251 if test -f $srcdir/config/$x
1253 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1259 for x in $xm_file; do
1260 if test -f $srcdir/config/$x
1262 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1268 for f in $tm_file; do
1271 if test $count = ax; then
1272 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1274 echo "Using the following target machine macro files:"
1275 for f in $tm_file; do
1276 echo " $srcdir/config/$f"
1280 if test x$need_64bit_hwint = xyes; then
1281 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1282 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1285 if test x$use_long_long_for_widest_fast_int = xyes; then
1286 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1287 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1288 efficiently supported by the host hardware.])
1292 for f in $host_xm_file; do
1295 if test $count = a; then
1297 elif test $count = ax; then
1298 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1300 echo "Using the following host machine macro files:"
1301 for f in $host_xm_file; do
1302 echo " $srcdir/config/$f"
1305 echo "Using ${out_host_hook_obj} for host machine hooks."
1307 if test "$host_xm_file" != "$build_xm_file"; then
1309 for f in $build_xm_file; do
1312 if test $count = a; then
1314 elif test $count = ax; then
1315 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1317 echo "Using the following build machine macro files:"
1318 for f in $build_xm_file; do
1319 echo " $srcdir/config/$f"
1326 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1327 gcc_cv_mcontext_underscores,
1329 #include <sys/cdefs.h>
1330 #include <sys/signal.h>
1331 #include <ucontext.h>
1332 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1334 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1335 if test $gcc_cv_mcontext_underscores = yes; then
1336 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1337 [mcontext_t fields start with __])
1346 # Check if a valid thread package
1347 case ${enable_threads} in
1350 target_thread_file='single'
1354 target_thread_file='single'
1356 aix | dce | gnat | irix | posix | posix95 | rtems | \
1357 single | solaris | vxworks | win32 | mipssde)
1358 target_thread_file=${enable_threads}
1361 echo "${enable_threads} is an unknown thread package" 1>&2
1366 if test x${thread_file} = x; then
1367 # No thread file set by target-specific clauses in config.gcc,
1368 # so use file chosen by default logic above
1369 thread_file=${target_thread_file}
1372 # Make gthr-default.h if we have a thread file.
1374 if test $thread_file != single; then
1375 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1376 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1377 rm -f gthr-default.h-t
1379 mv -f gthr-default.h-t gthr-default.h
1381 gthread_flags=-DHAVE_GTHR_DEFAULT
1383 AC_SUBST(gthread_flags)
1390 if test x$enable___cxa_atexit = xyes || \
1391 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1392 if test x$host = x$target; then
1394 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1395 # keyed to flag_use_cxa_atexit
1400 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1401 [echo "__cxa_atexit can't be enabled on this target"])
1405 # We can't check for __cxa_atexit when building a cross, so assume
1409 if test x$use_cxa_atexit = xyes; then
1410 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1411 [Define if you want to use __cxa_atexit, rather than atexit, to
1412 register C++ destructors for local statics and global objects.
1413 This is essential for fully standards-compliant handling of
1414 destructors, but requires __cxa_atexit in libc.])
1418 # Look for a file containing extra machine modes.
1419 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1420 extra_modes_file='$(srcdir)'/config/${extra_modes}
1421 AC_SUBST(extra_modes_file)
1422 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1423 [Define to the name of a file containing a list of extra machine modes
1424 for this architecture.])
1427 # Convert extra_options into a form suitable for Makefile use.
1429 for f in $extra_options; do
1430 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1432 AC_SUBST(extra_opt_files)
1434 # auto-host.h is the file containing items generated by autoconf and is
1435 # the first file included by config.h.
1436 # If host=build, it is correct to have bconfig include auto-host.h
1437 # as well. If host!=build, we are in error and need to do more
1438 # work to find out the build config parameters.
1439 if test x$host = x$build
1441 build_auto=auto-host.h
1443 # We create a subdir, then run autoconf in the subdir.
1444 # To prevent recursion we set host and build for the new
1445 # invocation of configure to the build for this invocation
1452 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1453 *) realsrcdir=../${srcdir};;
1455 saved_CFLAGS="${CFLAGS}"
1456 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1457 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1458 ${realsrcdir}/configure \
1459 --enable-languages=${enable_languages-all} \
1460 --target=$target_alias --host=$build_alias --build=$build_alias
1461 CFLAGS="${saved_CFLAGS}"
1463 # We just finished tests for the build machine, so rename
1464 # the file auto-build.h in the gcc directory.
1465 mv auto-host.h ../auto-build.h
1468 build_auto=auto-build.h
1470 AC_SUBST(build_subdir)
1472 tm_file="${tm_file} defaults.h"
1473 tm_p_file="${tm_p_file} tm-preds.h"
1474 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1475 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1476 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1477 # put this back in temporarily.
1478 xm_file="auto-host.h ansidecl.h ${xm_file}"
1485 # Compile in configure arguments.
1486 if test -f configargs.h ; then
1487 # Being re-configured.
1488 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1489 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1491 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1494 # Double all backslashes and backslash all quotes to turn
1495 # gcc_config_arguments into a C string.
1496 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1497 $gcc_config_arguments
1499 gcc_config_arguments_str=`cat conftest.out`
1502 cat > configargs.h <<EOF
1503 /* Generated automatically. */
1504 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1505 static const char thread_model[] = "$thread_file";
1507 static const struct {
1508 const char *name, *value;
1509 } configure_default_options[] = $configure_default_options;
1513 # Internationalization
1514 ZW_GNU_GETTEXT_SISTER_DIR
1516 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1517 # -liconv on the link line twice.
1518 case "$LIBINTL" in *$LIBICONV*)
1522 AC_ARG_ENABLE(secureplt,
1523 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1527 [ --enable-cld enable -mcld by default for 32bit x86], [],
1530 # Windows32 Registry support for specifying GCC installation paths.
1531 AC_ARG_ENABLE(win32-registry,
1532 [ --disable-win32-registry
1533 disable lookup of installation paths in the
1534 Registry on Windows hosts
1535 --enable-win32-registry enable registry lookup (default)
1536 --enable-win32-registry=KEY
1537 use KEY instead of GCC version as the last portion
1538 of the registry key],,)
1541 win32 | pe | cygwin* | mingw32* | uwin*)
1542 if test "x$enable_win32_registry" != xno; then
1543 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1546 if test "x$enable_win32_registry" != xno; then
1547 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1548 [Define to 1 if installation paths should be looked up in the Windows
1549 Registry. Ignored on non-Windows hosts.])
1551 if test "x$enable_win32_registry" != xyes \
1552 && test "x$enable_win32_registry" != x; then
1553 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1554 [Define to be the last component of the Windows registry key under which
1555 to look for installation paths. The full key used will be
1556 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1557 The default is the GCC version number.])
1563 # Get an absolute path to the GCC top-level source directory
1564 holddir=`${PWDCMD-pwd}`
1566 topdir=`${PWDCMD-pwd}`
1569 # Conditionalize the makefile for this host machine.
1571 for f in ${host_xmake_file}
1573 if test -f ${srcdir}/config/$f
1575 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1579 # Conditionalize the makefile for this target machine.
1581 for f in ${tmake_file}
1583 if test -f ${srcdir}/config/$f
1585 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1588 tmake_file="${tmake_file_}"
1590 out_object_file=`basename $out_file .c`.o
1592 tm_file_list="options.h"
1593 tm_include_list="options.h"
1594 for f in $tm_file; do
1597 f=`echo $f | sed 's/^..//'`
1598 tm_file_list="${tm_file_list} $f"
1599 tm_include_list="${tm_include_list} $f"
1602 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1603 tm_include_list="${tm_include_list} $f"
1606 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1607 tm_include_list="${tm_include_list} config/$f"
1614 for f in $tm_p_file; do
1617 tm_p_file_list="${tm_p_file_list} $f"
1618 tm_p_include_list="${tm_p_include_list} $f"
1621 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1622 tm_p_include_list="${tm_p_include_list} config/$f"
1628 for f in $xm_file; do
1631 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1632 xm_include_list="${xm_include_list} $f"
1635 xm_file_list="${xm_file_list} $f"
1636 xm_include_list="${xm_include_list} $f"
1639 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1640 xm_include_list="${xm_include_list} config/$f"
1646 host_xm_include_list=
1647 for f in $host_xm_file; do
1650 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1651 host_xm_include_list="${host_xm_include_list} $f"
1654 host_xm_file_list="${host_xm_file_list} $f"
1655 host_xm_include_list="${host_xm_include_list} $f"
1658 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1659 host_xm_include_list="${host_xm_include_list} config/$f"
1665 for f in $build_xm_file; do
1668 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1669 build_xm_include_list="${build_xm_include_list} $f"
1671 auto-build.h | auto-host.h )
1672 build_xm_file_list="${build_xm_file_list} $f"
1673 build_xm_include_list="${build_xm_include_list} $f"
1676 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1677 build_xm_include_list="${build_xm_include_list} config/$f"
1682 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1683 # cross-compiler which does not use the native headers and libraries.
1684 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1685 CROSS= AC_SUBST(CROSS)
1686 ALL=all.internal AC_SUBST(ALL)
1687 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1689 if test "x$with_build_sysroot" != x; then
1690 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1692 # This value is used, even on a native system, because
1693 # CROSS_SYSTEM_HEADER_DIR is just
1694 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1695 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1698 if test x$host != x$target
1700 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1702 SYSTEM_HEADER_DIR=$build_system_header_dir
1703 case "$host","$target" in
1704 # Darwin crosses can use the host system's libraries and headers,
1705 # because of the fat library support. Of course, it must be the
1706 # same version of Darwin on both sides. Allow the user to
1707 # just say --target=foo-darwin without a version number to mean
1708 # "the version on this system".
1709 *-*-darwin*,*-*-darwin*)
1710 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1711 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1712 if test $hostos = $targetos -o $targetos = darwin ; then
1714 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1719 i?86-*-*,x86_64-*-* \
1720 | powerpc*-*-*,powerpc64*-*-*)
1721 CROSS="$CROSS -DNATIVE_CROSS" ;;
1723 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1724 SYSTEM_HEADER_DIR=$build_system_header_dir
1727 # If this is a cross-compiler that does not
1728 # have its own set of headers then define
1731 # If this is using newlib, without having the headers available now,
1732 # then define inhibit_libc in LIBGCC2_CFLAGS.
1733 # This prevents libgcc2 from containing any code which requires libc
1735 : ${inhibit_libc=false}
1736 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1737 test x$with_newlib = xyes ; } &&
1738 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1741 AC_SUBST(inhibit_libc)
1743 # When building gcc with a cross-compiler, we need to adjust things so
1744 # that the generator programs are still built with the native compiler.
1745 # Also, we cannot run fixincludes or fix-header.
1747 # These are the normal (build=host) settings:
1748 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1749 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1750 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1751 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1753 # Possibly disable fixproto, on a per-target basis.
1754 case ${use_fixproto} in
1759 STMP_FIXPROTO=stmp-fixproto
1762 AC_SUBST(STMP_FIXPROTO)
1764 # And these apply if build != host, or we are generating coverage data
1765 if test x$build != x$host || test "x$coverage_flags" != x
1767 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1768 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1770 if test "x$TARGET_SYSTEM_ROOT" = x; then
1771 if test "x$STMP_FIXPROTO" != x; then
1772 STMP_FIXPROTO=stmp-install-fixproto
1777 # Expand extra_headers to include complete path.
1778 # This substitutes for lots of t-* files.
1780 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1781 for file in ${extra_headers} ; do
1782 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1785 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1786 if test x"$use_gcc_tgmath" = xyes
1787 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1790 # Define collect2 in Makefile.
1791 case $host_can_use_collect2 in
1793 *) collect2='collect2$(exeext)' ;;
1795 AC_SUBST([collect2])
1797 # Add a definition of USE_COLLECT2 if system wants one.
1798 case $use_collect2 in
1799 no) use_collect2= ;;
1802 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1803 xm_defines="${xm_defines} USE_COLLECT2"
1804 case $host_can_use_collect2 in
1806 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1812 # ---------------------------
1813 # Assembler & linker features
1814 # ---------------------------
1816 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1817 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1818 # However when ld-new is first executed from the build tree, libtool will
1819 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1820 # to the build tree. While doing this we need to use the previous-stage
1821 # linker, or we have an infinite loop. The presence of a shell script as
1822 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1823 # the gcc/collect-ld script. So we need to know how libtool works, or
1824 # exec-tool will fail.
1826 m4_defun([_LT_CONFIG_COMMANDS], [])
1829 AC_SUBST(enable_fast_install)
1831 # Identify the assembler which will work hand-in-glove with the newly
1832 # built GCC, so that we can examine its features. This is the assembler
1833 # which will be driven by the driver program.
1835 # If build != host, and we aren't building gas in-tree, we identify a
1836 # build->target assembler and hope that it will have the same features
1837 # as the host->target assembler we'll be using.
1838 gcc_cv_gas_major_version=
1839 gcc_cv_gas_minor_version=
1840 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1842 m4_pattern_allow([AS_FOR_TARGET])dnl
1843 AS_VAR_SET_IF(gcc_cv_as,, [
1844 if test -x "$DEFAULT_ASSEMBLER"; then
1845 gcc_cv_as="$DEFAULT_ASSEMBLER"
1846 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1847 && test -f ../gas/Makefile \
1848 && test x$build = x$host; then
1849 gcc_cv_as=../gas/as-new$build_exeext
1850 elif test -x as$build_exeext; then
1851 # Build using assembler in the current directory.
1852 gcc_cv_as=./as$build_exeext
1853 elif test -x $AS_FOR_TARGET; then
1854 gcc_cv_as="$AS_FOR_TARGET"
1856 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1859 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1860 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1861 case "$ORIGINAL_AS_FOR_TARGET" in
1862 ./as | ./as$build_exeext) ;;
1863 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1866 AC_MSG_CHECKING(what assembler to use)
1867 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1868 # Single tree build which includes gas. We want to prefer it
1869 # over whatever linker top-level may have detected, since
1870 # we'll use what we're building after installation anyway.
1871 AC_MSG_RESULT(newly built gas)
1873 _gcc_COMPUTE_GAS_VERSION
1874 in_tree_gas_is_elf=no
1875 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1876 || (grep 'obj_format = multi' ../gas/Makefile \
1877 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1879 in_tree_gas_is_elf=yes
1882 AC_MSG_RESULT($gcc_cv_as)
1886 # Identify the linker which will work hand-in-glove with the newly
1887 # built GCC, so that we can examine its features. This is the linker
1888 # which will be driven by the driver program.
1890 # If build != host, and we aren't building gas in-tree, we identify a
1891 # build->target linker and hope that it will have the same features
1892 # as the host->target linker we'll be using.
1893 gcc_cv_gld_major_version=
1894 gcc_cv_gld_minor_version=
1895 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1896 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1898 AS_VAR_SET_IF(gcc_cv_ld,, [
1899 if test -x "$DEFAULT_LINKER"; then
1900 gcc_cv_ld="$DEFAULT_LINKER"
1901 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1902 && test -f ../ld/Makefile \
1903 && test x$build = x$host; then
1904 gcc_cv_ld=../ld/ld-new$build_exeext
1905 elif test -x collect-ld$build_exeext; then
1906 # Build using linker in the current directory.
1907 gcc_cv_ld=./collect-ld$build_exeext
1908 elif test -x $LD_FOR_TARGET; then
1909 gcc_cv_ld="$LD_FOR_TARGET"
1911 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1914 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1915 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1916 case "$ORIGINAL_LD_FOR_TARGET" in
1917 ./collect-ld | ./collect-ld$build_exeext) ;;
1918 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1921 AC_MSG_CHECKING(what linker to use)
1922 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1923 # Single tree build which includes ld. We want to prefer it
1924 # over whatever linker top-level may have detected, since
1925 # we'll use what we're building after installation anyway.
1926 AC_MSG_RESULT(newly built ld)
1928 in_tree_ld_is_elf=no
1929 if (grep 'EMUL = .*elf' ../ld/Makefile \
1930 || grep 'EMUL = .*linux' ../ld/Makefile \
1931 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1932 in_tree_ld_is_elf=yes
1934 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
1937 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1938 if test x$gcc_cv_gld_version != x; then
1942 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1943 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1946 AC_MSG_RESULT($gcc_cv_ld)
1950 # Figure out what nm we will be using.
1951 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1952 AS_VAR_SET_IF(gcc_cv_nm,, [
1953 if test -f $gcc_cv_binutils_srcdir/configure.in \
1954 && test -f ../binutils/Makefile \
1955 && test x$build = x$host; then
1956 gcc_cv_nm=../binutils/nm-new$build_exeext
1957 elif test -x nm$build_exeext; then
1958 gcc_cv_nm=./nm$build_exeext
1959 elif test -x $NM_FOR_TARGET; then
1960 gcc_cv_nm="$NM_FOR_TARGET"
1962 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1965 AC_MSG_CHECKING(what nm to use)
1966 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1967 # Single tree build which includes binutils.
1968 AC_MSG_RESULT(newly built nm)
1971 AC_MSG_RESULT($gcc_cv_nm)
1975 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1976 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1977 case "$ORIGINAL_NM_FOR_TARGET" in
1978 ./nm | ./nm$build_exeext) ;;
1979 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
1983 # Figure out what objdump we will be using.
1984 AS_VAR_SET_IF(gcc_cv_objdump,, [
1985 if test -f $gcc_cv_binutils_srcdir/configure.in \
1986 && test -f ../binutils/Makefile \
1987 && test x$build = x$host; then
1988 # Single tree build which includes binutils.
1989 gcc_cv_objdump=../binutils/objdump$build_exeext
1990 elif test -x objdump$build_exeext; then
1991 gcc_cv_objdump=./objdump$build_exeext
1992 elif test -x $OBJDUMP_FOR_TARGET; then
1993 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
1995 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
1998 AC_MSG_CHECKING(what objdump to use)
1999 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2000 # Single tree build which includes binutils.
2001 AC_MSG_RESULT(newly built objdump)
2002 elif test x$gcc_cv_objdump = x; then
2003 AC_MSG_RESULT(not found)
2005 AC_MSG_RESULT($gcc_cv_objdump)
2008 # Figure out what readelf we will be using.
2009 AS_VAR_SET_IF(gcc_cv_readelf,, [
2010 if test -f $gcc_cv_binutils_srcdir/configure.in \
2011 && test -f ../binutils/Makefile \
2012 && test x$build = x$host; then
2013 # Single tree build which includes binutils.
2014 gcc_cv_readelf=../binutils/readelf$build_exeext
2015 elif test -x readelf$build_exeext; then
2016 gcc_cv_readelf=./readelf$build_exeext
2018 AC_PATH_PROG(gcc_cv_readelf, readelf)
2021 AC_MSG_CHECKING(what readelf to use)
2022 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2023 # Single tree build which includes binutils.
2024 AC_MSG_RESULT(newly built readelf)
2025 elif test x$gcc_cv_readelf = x; then
2026 AC_MSG_RESULT(not found)
2028 AC_MSG_RESULT($gcc_cv_readelf)
2031 # Figure out what assembler alignment features are present.
2032 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2036 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2037 [Define if your assembler supports .balign and .p2align.])])
2039 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2042 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2043 [Define if your assembler supports specifying the maximum number
2044 of bytes to skip when using the GAS .p2align command.])])
2046 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2049 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2050 [Define if your assembler supports .literal16.])])
2052 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2054 [conftest_label1: .word 0
2056 conftest_label2: .word 0
2058 [if test x$gcc_cv_nm != x; then
2059 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2060 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2061 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2063 else gcc_cv_as_subsection_m1=yes
2065 rm -f conftest.nm1 conftest.nm2
2067 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2068 [Define if your assembler supports .subsection and .subsection -1 starts
2069 emitting at the beginning of your section.])])
2071 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2074 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2076 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2078 [ .weakref foobar, barfnot],,
2079 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2081 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2084 .NSUBSPA $CODE$,COMDAT],,
2085 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2087 # .hidden needs to be supported in both the assembler and the linker,
2088 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2089 # This is irritatingly difficult to feature test for; we have to check the
2090 # date string after the version number. If we've got an in-tree
2091 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2093 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2094 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2099 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2100 [if test $in_tree_ld = yes ; then
2102 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2103 && test $in_tree_ld_is_elf = yes; then
2104 gcc_cv_ld_hidden=yes
2108 gcc_cv_ld_hidden=yes
2109 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2110 if echo "$ld_ver" | grep GNU > /dev/null; then
2111 ld_vers=`echo $ld_ver | sed -n \
2112 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2113 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2114 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2115 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2116 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2117 if test 0"$ld_date" -lt 20020404; then
2118 if test -n "$ld_date"; then
2119 # If there was date string, but was earlier than 2002-04-04, fail
2121 elif test -z "$ld_vers"; then
2122 # If there was no date string nor ld version number, something is wrong
2125 test -z "$ld_vers_patch" && ld_vers_patch=0
2126 if test "$ld_vers_major" -lt 2; then
2128 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2129 gcc_cv_ld_hidden="no"
2130 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2137 hppa64*-*-hpux* | ia64*-*-hpux*)
2138 gcc_cv_ld_hidden=yes
2140 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2141 gcc_cv_ld_hidden=yes
2150 libgcc_visibility=no
2151 AC_SUBST(libgcc_visibility)
2152 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2153 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2154 libgcc_visibility=yes
2155 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2156 [Define if your assembler and linker support .hidden.])
2159 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2160 gcc_cv_ld_ro_rw_mix=unknown
2161 if test $in_tree_ld = yes ; then
2162 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2163 && test $in_tree_ld_is_elf = yes; then
2164 gcc_cv_ld_ro_rw_mix=read-write
2166 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2167 echo '.section myfoosect, "a"' > conftest1.s
2168 echo '.section myfoosect, "aw"' > conftest2.s
2169 echo '.byte 1' >> conftest2.s
2170 echo '.section myfoosect, "a"' > conftest3.s
2171 echo '.byte 0' >> conftest3.s
2172 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2173 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2174 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2175 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2176 conftest2.o conftest3.o > /dev/null 2>&1; then
2177 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2178 | sed -e '/myfoosect/!d' -e N`
2179 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2180 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2181 gcc_cv_ld_ro_rw_mix=read-only
2183 gcc_cv_ld_ro_rw_mix=read-write
2188 rm -f conftest.* conftest[123].*
2191 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2192 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2193 [Define if your linker links a mix of read-only
2194 and read-write sections into a read-write section.])
2196 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2198 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2199 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2207 [# GAS versions before 2.11 do not support uleb128,
2208 # despite appearing to.
2209 # ??? There exists an elf-specific test that will crash
2210 # the assembler. Perhaps it's better to figure out whether
2211 # arbitrary sections are supported and try the test.
2212 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2213 if echo "$as_ver" | grep GNU > /dev/null; then
2215 as_vers=`echo $as_ver | sed -n \
2216 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2217 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2218 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2220 if test $as_major -eq 2 && test $as_minor -lt 11
2222 else gcc_cv_as_leb128=yes
2225 [AC_DEFINE(HAVE_AS_LEB128, 1,
2226 [Define if your assembler supports .sleb128 and .uleb128.])])
2228 # Check if we have assembler support for unwind directives.
2229 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2236 .cfi_escape 1, 2, 3, 4, 5
2240 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2241 # read-only and read-write sections, we need to make sure that the
2242 # assembler used emits read-write .eh_frame sections.
2243 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2244 if test "x$gcc_cv_objdump" != x; then
2245 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2246 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2247 gcc_cv_as_cfi_directive=no
2249 gcc_cv_as_cfi_directive=yes
2252 # no objdump, err on the side of caution
2253 gcc_cv_as_cfi_directive=no
2256 gcc_cv_as_cfi_directive=yes
2260 gcc_cv_as_cfi_directive=yes
2263 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_readelf != x; then
2264 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2268 .cfi_adjust_cfa_offset 64
2270 .cfi_adjust_cfa_offset 128
2274 if $gcc_cv_readelf -wf conftest.o 2>/dev/null \
2275 | grep 'DW_CFA_advance_loc[12]:[ ][ ]*512[ ]' >/dev/null; then
2276 gcc_cv_as_cfi_advance_working=yes
2281 # no readelf, err on the side of caution
2282 gcc_cv_as_cfi_advance_working=no
2284 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2285 [`if test $gcc_cv_as_cfi_directive = yes \
2286 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2287 [Define 0/1 if your assembler supports CFI directives.])
2289 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2290 gcc_cv_as_cfi_personality_directive, ,,
2293 .cfi_personality 0, symbol
2295 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2296 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2297 then echo 1; else echo 0; fi`],
2298 [Define 0/1 if your assembler supports .cfi_personality.])
2300 # GAS versions up to and including 2.11.0 may mis-optimize
2302 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2310 .section .eh_frame,"aw",@progbits
2312 .4byte .LECIE1-.LSCIE1
2326 .4byte .LEFDE1-.LASFDE1
2328 .4byte .LASFDE1-__FRAME_BEGIN__
2336 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2337 cat > conftest.lit <<EOF
2338 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2339 0010 01000000 12000000 18000000 00000000 ................
2340 0020 08000000 04080000 0044 .........D @&t@
2342 cat > conftest.big <<EOF
2343 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2344 0010 00000001 00000012 00000018 00000000 ................
2345 0020 00000008 04000000 0844 .........D @&t@
2347 # If the assembler didn't choke, and we can objdump,
2348 # and we got the correct data, then succeed.
2349 # The text in the here-document typically retains its unix-style line
2350 # endings, while the output of objdump will use host line endings.
2351 # Therefore, use diff -b for the comparisons.
2352 if test x$gcc_cv_objdump != x \
2353 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2354 | tail -3 > conftest.got \
2355 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2356 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2358 gcc_cv_as_eh_frame=yes
2359 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2360 gcc_cv_as_eh_frame=buggy
2362 # Uh oh, what do we do now?
2363 gcc_cv_as_eh_frame=no
2366 if test $gcc_cv_as_eh_frame = buggy; then
2367 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2368 [Define if your assembler mis-optimizes .eh_frame data.])
2371 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2372 [elf,2,12,0], [--fatal-warnings],
2373 [.section .rodata.str, "aMS", @progbits, 1])
2374 if test $gcc_cv_as_shf_merge = no; then
2375 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2376 [elf,2,12,0], [--fatal-warnings],
2377 [.section .rodata.str, "aMS", %progbits, 1])
2379 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2380 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2381 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2383 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2384 [elf,2,16,0], [--fatal-warnings],
2385 [.section .text,"axG",@progbits,.foo,comdat])
2386 if test $gcc_cv_as_comdat_group = yes; then
2387 gcc_cv_as_comdat_group_percent=no
2389 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2390 [elf,2,16,0], [--fatal-warnings],
2391 [.section .text,"axG",%progbits,.foo,comdat])
2393 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2395 if test 0"$ld_date" -lt 20050308; then
2396 if test -n "$ld_date"; then
2397 # If there was date string, but was earlier than 2005-03-08, fail
2399 elif test "$ld_vers_major" -lt 2; then
2401 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2406 # assume linkers other than GNU ld don't support COMDAT group
2409 if test $comdat_group = no; then
2410 gcc_cv_as_comdat_group=no
2411 gcc_cv_as_comdat_group_percent=no
2413 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2414 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2415 [Define 0/1 if your assembler and linker support COMDAT groups.])
2417 # Thread-local storage - the check is heavily parameterized.
2426 .section ".tdata","awT",@progbits
2429 ldq $27,__tls_get_addr($29) !literal!1
2430 lda $16,foo($29) !tlsgd!1
2431 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2432 ldq $27,__tls_get_addr($29) !literal!2
2433 lda $16,foo($29) !tlsldm!2
2434 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2435 ldq $1,foo($29) !gotdtprel
2436 ldah $2,foo($29) !dtprelhi
2437 lda $3,foo($2) !dtprello
2438 lda $4,foo($29) !dtprel
2439 ldq $1,foo($29) !gottprel
2440 ldah $2,foo($29) !tprelhi
2441 lda $3,foo($2) !tprello
2442 lda $4,foo($29) !tprel'
2445 tls_as_opt=--fatal-warnings
2447 cris-*-*|crisv32-*-*)
2449 .section ".tdata","awT",@progbits
2456 tls_as_opt=--fatal-warnings
2460 .section ".tdata","awT",@progbits
2472 .section ".tdata","awT",@progbits
2476 addil LT%foo-$tls_gdidx$,gp
2477 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2480 addil LT%foo-$tls_ldidx$,gp
2482 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2483 addil LR%foo-$tls_dtpoff$,%ret0
2484 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2486 addil LT%foo-$tls_ieoff$,gp
2487 ldw RT%foo-$tls_ieoff$(%r1),%t2
2490 addil LR%foo-$tls_leoff$,%t1
2491 ldo RR%foo-$tls_leoff$(%r1),%t2'
2494 tls_as_opt=--fatal-warnings
2498 .section ".tdata","awT",%progbits
2511 .section ".tdata","awT",@progbits
2515 leal foo@TLSGD(,%ebx,1), %eax
2516 leal foo@TLSLDM(%ebx), %eax
2517 leal foo@DTPOFF(%eax), %edx
2518 movl foo@GOTTPOFF(%ebx), %eax
2519 subl foo@GOTTPOFF(%ebx), %eax
2520 addl foo@GOTNTPOFF(%ebx), %eax
2521 movl foo@INDNTPOFF, %eax
2522 movl $foo@TPOFF, %eax
2523 subl $foo@TPOFF, %eax
2524 leal foo@NTPOFF(%ecx), %eax'
2527 tls_as_opt=--fatal-warnings
2531 .section ".tdata","awT",@progbits
2535 leaq foo@TLSGD(%rip), %rdi
2536 leaq foo@TLSLD(%rip), %rdi
2537 leaq foo@DTPOFF(%rax), %rdx
2538 movq foo@GOTTPOFF(%rip), %rax
2539 movq $foo@TPOFF, %rax'
2542 tls_as_opt=--fatal-warnings
2546 .section ".tdata","awT",@progbits
2549 addl r16 = @ltoff(@dtpmod(foo#)), gp
2550 addl r17 = @ltoff(@dtprel(foo#)), gp
2551 addl r18 = @ltoff(@tprel(foo#)), gp
2552 addl r19 = @dtprel(foo#), gp
2553 adds r21 = @dtprel(foo#), r13
2554 movl r23 = @dtprel(foo#)
2555 addl r20 = @tprel(foo#), gp
2556 adds r22 = @tprel(foo#), r13
2557 movl r24 = @tprel(foo#)'
2560 tls_as_opt=--fatal-warnings
2564 .section .tdata,"awT",@progbits
2568 addiu $4, $28, %tlsgd(x)
2569 addiu $4, $28, %tlsldm(x)
2570 lui $4, %dtprel_hi(x)
2571 addiu $4, $4, %dtprel_lo(x)
2572 lw $4, %gottprel(x)($28)
2573 lui $4, %tprel_hi(x)
2574 addiu $4, $4, %tprel_lo(x)'
2577 tls_as_opt='-32 --fatal-warnings'
2581 .section ".tdata","awT",@progbits
2589 addi 3,31,ld0@got@tlsgd
2591 addi 3,31,x1@got@tlsld
2594 addis 9,3,x2@dtprel@ha
2595 addi 9,9,x2@dtprel@l
2596 lwz 9,x3@got@tprel(31)
2599 addis 9,2,x2@tprel@ha
2600 addi 9,9,x2@tprel@l'
2603 tls_as_opt="-a32 --fatal-warnings"
2607 .section ".tdata","awT",@progbits
2615 addi 3,2,ld0@got@tlsgd
2621 addi 3,2,x1@got@tlsld
2627 addis 9,3,x2@dtprel@ha
2628 addi 9,9,x2@dtprel@l
2631 ld 9,x3@got@dtprel(2)
2637 tls_as_opt="-a64 --fatal-warnings"
2641 .section ".tdata","awT",@progbits
2650 l %r1,foo@GOTNTPOFF(%r12)
2651 l %r1,0(%r1):tls_load:foo
2652 bas %r14,0(%r1,%r13):tls_gdcall:foo
2653 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2656 tls_as_opt="-m31 --fatal-warnings"
2660 .section ".tdata","awT",@progbits
2668 lg %r1,foo@GOTNTPOFF(%r12)
2669 larl %r1,foo@INDNTPOFF
2670 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2671 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2674 tls_as_opt="-m64 -Aesame --fatal-warnings"
2676 sh-*-* | sh[34]-*-*)
2678 .section ".tdata","awT",@progbits
2688 tls_as_opt=--fatal-warnings
2692 sparc*-sun-solaris2.[56789]*)
2693 # TLS was introduced in the Solaris 9 4/04 release but
2694 # we do not enable it by default on Solaris 9 either.
2695 if test "x$enable_tls" = xyes ; then
2701 sparc*-sun-solaris2.*)
2708 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2710 .section ".tdata",#alloc,#write,#tls
2713 sethi %tgd_hi22(foo), %o0
2714 add %o0, %tgd_lo10(foo), %o1
2715 add %l7, %o1, %o0, %tgd_add(foo)
2716 call __tls_get_addr, %tgd_call(foo)
2717 sethi %tldm_hi22(foo), %l1
2718 add %l1, %tldm_lo10(foo), %l2
2719 add %l7, %l2, %o0, %tldm_add(foo)
2720 call __tls_get_addr, %tldm_call(foo)
2721 sethi %tldo_hix22(foo), %l3
2722 xor %l3, %tldo_lox10(foo), %l4
2723 add %o0, %l4, %l5, %tldo_add(foo)
2724 sethi %tie_hi22(foo), %o3
2725 add %o3, %tie_lo10(foo), %o3
2726 ld [%l7 + %o3], %o2, %tie_ld(foo)
2727 add %g7, %o2, %o4, %tie_add(foo)
2728 sethi %tle_hix22(foo), %l1
2729 xor %l1, %tle_lox10(foo), %o5
2730 ld [%g7 + %o5], %o1'
2735 .section ".tdata","awT",@progbits
2738 sethi %tgd_hi22(foo), %o0
2739 add %o0, %tgd_lo10(foo), %o1
2740 add %l7, %o1, %o0, %tgd_add(foo)
2741 call __tls_get_addr, %tgd_call(foo)
2742 sethi %tldm_hi22(foo), %l1
2743 add %l1, %tldm_lo10(foo), %l2
2744 add %l7, %l2, %o0, %tldm_add(foo)
2745 call __tls_get_addr, %tldm_call(foo)
2746 sethi %tldo_hix22(foo), %l3
2747 xor %l3, %tldo_lox10(foo), %l4
2748 add %o0, %l4, %l5, %tldo_add(foo)
2749 sethi %tie_hi22(foo), %o3
2750 add %o3, %tie_lo10(foo), %o3
2751 ld [%l7 + %o3], %o2, %tie_ld(foo)
2752 add %g7, %o2, %o4, %tie_add(foo)
2753 sethi %tle_hix22(foo), %l1
2754 xor %l1, %tle_lox10(foo), %o5
2755 ld [%g7 + %o5], %o1'
2758 tls_as_opt="-32 --fatal-warnings"
2763 .section ".tdata","awT",@progbits
2766 movi a8, foo@TLSFUNC
2767 movi a10, foo@TLSARG
2768 callx8.tls a8, foo@TLSCALL'
2775 if test "x$enable_tls" = xno ; then
2776 : # TLS explicitly disabled.
2777 elif test "x$enable_tls" = xyes ; then
2778 set_have_as_tls=yes # TLS explicitly enabled.
2779 elif test -z "$tls_first_major"; then
2780 : # If we don't have a check, assume no support.
2782 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2783 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2784 [set_have_as_tls=yes])
2786 if test $set_have_as_tls = yes ; then
2787 AC_DEFINE(HAVE_AS_TLS, 1,
2788 [Define if your assembler supports thread-local storage.])
2791 # Target-specific assembler checks.
2793 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2794 gcc_cv_ld_static_dynamic=no
2795 if test $in_tree_ld = yes ; then
2796 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2797 gcc_cv_ld_static_dynamic=yes
2799 elif test x$gcc_cv_ld != x; then
2800 # Check if linker supports -Bstatic/-Bdynamic option
2801 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2802 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2803 gcc_cv_ld_static_dynamic=yes
2806 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2807 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2808 [Define if your linker supports -Bstatic/-Bdynamic option.])
2810 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2812 if test x"$demangler_in_ld" = xyes; then
2813 AC_MSG_CHECKING(linker --demangle support)
2814 gcc_cv_ld_demangle=no
2815 if test $in_tree_ld = yes; then
2816 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2817 gcc_cv_ld_demangle=yes
2819 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2820 # Check if the GNU linker supports --demangle option
2821 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2822 gcc_cv_ld_demangle=yes
2825 if test x"$gcc_cv_ld_demangle" = xyes; then
2826 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2827 [Define if your linker supports --demangle option.])
2829 AC_MSG_RESULT($gcc_cv_ld_demangle)
2833 # All TARGET_ABI_OSF targets.
2834 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2835 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2836 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2839 extbl $3, $2, $3 !lituse_bytoff!1
2840 ldq $2, a($29) !literal!1
2841 ldq $4, b($29) !literal!2
2842 ldq_u $3, 0($2) !lituse_base!1
2843 ldq $27, f($29) !literal!5
2844 jsr $26, ($27), f !lituse_jsr!5
2845 ldah $29, 0($26) !gpdisp!3
2846 lda $0, c($29) !gprel
2847 ldah $1, d($29) !gprelhigh
2848 lda $1, d($1) !gprellow
2849 lda $29, 0($29) !gpdisp!3],,
2850 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2851 [Define if your assembler supports explicit relocations.])])
2852 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2853 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2856 ldq $27, a($29) !literal!1
2857 jsr $26, ($27), a !lituse_jsrdirect!1],,
2858 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2859 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2863 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2864 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2865 [-no-mul-bug-abort], [.text],,
2866 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2867 [Define if your assembler supports the -no-mul-bug-abort option.])])
2871 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2872 [.register %g2, #scratch],,
2873 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2874 [Define if your assembler supports .register.])])
2876 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2878 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2879 [Define if your assembler supports -relax option.])])
2881 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2882 gcc_cv_as_sparc_ua_pcrel,,
2890 .uaword %r_disp32(foo)],
2891 [if test x$gcc_cv_ld != x \
2892 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2893 gcc_cv_as_sparc_ua_pcrel=yes
2896 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2897 [Define if your assembler and linker support unaligned PC relative relocs.])
2899 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2900 gcc_cv_as_sparc_ua_pcrel_hidden,,
2905 .uaword %r_disp32(foo)
2906 .byte 0x32, 0x33, 0x34
2911 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2912 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2913 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2914 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2915 if $gcc_cv_objdump -R conftest 2> /dev/null \
2916 | grep 'DISP32' > /dev/null 2>&1; then
2919 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2923 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2924 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2925 ]) # unaligned pcrel relocs
2927 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2928 gcc_cv_as_sparc_offsetable_lo10,,
2931 or %g1, %lo(ab) + 12, %g1
2932 or %g1, %lo(ab + 12), %g1],
2933 [if test x$gcc_cv_objdump != x \
2934 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2935 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2936 gcc_cv_as_sparc_offsetable_lo10=yes
2938 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2939 [Define if your assembler supports offsetable %lo().])])
2943 i[34567]86-*-* | x86_64-*-*)
2946 cygwin* | pe | mingw32*)
2947 # Used for DWARF 2 in PE
2948 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2949 gcc_cv_as_ix86_pe_secrel32,
2955 [if test x$gcc_cv_ld != x \
2956 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2957 gcc_cv_as_ix86_pe_secrel32=yes
2960 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2961 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2965 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2966 gcc_cv_as_ix86_filds_fists,
2967 [2,9,0],, [filds mem; fists mem],,
2968 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2969 [Define if your assembler uses the new HImode fild and fist notation.])])
2971 gcc_GAS_CHECK_FEATURE([cmov syntax],
2972 gcc_cv_as_ix86_cmov_sun_syntax,,,
2973 [cmovl.l %edx, %eax],,
2974 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2975 [Define if your assembler supports the Sun syntax for cmov.])])
2977 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2978 gcc_cv_as_ix86_ffreep,,,
2980 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2981 [Define if your assembler supports the ffreep mnemonic.])])
2983 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
2984 gcc_cv_as_ix86_sahf,,,
2986 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
2987 [Define if your assembler supports the sahf mnemonic.])])
2989 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2990 gcc_cv_as_ix86_diff_sect_delta,,,
2998 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2999 [Define if your assembler supports the subtraction of symbols in different sections.])])
3001 # This one is used unconditionally by i386.[ch]; it is to be defined
3002 # to 1 if the feature is present, 0 otherwise.
3003 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3004 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3010 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3011 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3012 [Define true if the assembler supports '.long foo@GOTOFF'.])
3016 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3017 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3019 addl r15 = @ltoffx(x#), gp
3021 ld8.mov r16 = [[r15]], x#],,
3022 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3023 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3029 *-*-aix*) conftest_s=' .machine "pwr5"
3033 gcc_GAS_CHECK_FEATURE([.machine directive support],
3034 gcc_cv_as_machine_directive,,,
3035 [ .machine ppc7400])
3036 if test x$gcc_cv_as_machine_directive != xyes; then
3037 echo "*** This target requires an assembler supporting \".machine\"" >&2
3038 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3039 test x$build = x$target && exit 1
3043 *) conftest_s=' .machine power4
3048 gcc_GAS_CHECK_FEATURE([mfcr field support],
3049 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3051 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3052 [Define if your assembler supports mfcr field.])])
3055 *-*-aix*) conftest_s=' .machine "pwr5"
3058 *) conftest_s=' .machine power5
3063 gcc_GAS_CHECK_FEATURE([popcntb support],
3064 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3066 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3067 [Define if your assembler supports popcntb field.])])
3070 *-*-aix*) conftest_s=' .machine "pwr5x"
3073 *) conftest_s=' .machine power5
3078 gcc_GAS_CHECK_FEATURE([fp round support],
3079 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3081 [AC_DEFINE(HAVE_AS_FPRND, 1,
3082 [Define if your assembler supports fprnd.])])
3085 *-*-aix*) conftest_s=' .machine "pwr6"
3088 *) conftest_s=' .machine power6
3093 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3094 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
3096 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3097 [Define if your assembler supports mffgpr and mftgpr.])])
3100 *-*-aix*) conftest_s=' .csect .text[[PR]]
3102 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3106 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3107 *) conftest_s=' .text
3109 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3112 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3113 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3115 [AC_DEFINE(HAVE_AS_REL16, 1,
3116 [Define if your assembler supports R_PPC_REL16 relocs.])])
3119 *-*-aix*) conftest_s=' .machine "pwr6"
3122 *) conftest_s=' .machine power6
3127 gcc_GAS_CHECK_FEATURE([compare bytes support],
3128 gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
3130 [AC_DEFINE(HAVE_AS_CMPB, 1,
3131 [Define if your assembler supports cmpb.])])
3134 *-*-aix*) conftest_s=' .machine "pwr6"
3137 *) conftest_s=' .machine power6
3142 gcc_GAS_CHECK_FEATURE([decimal float support],
3143 gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
3145 [AC_DEFINE(HAVE_AS_DFP, 1,
3146 [Define if your assembler supports DFP instructions.])])
3149 *-*-aix*) conftest_s=' .machine "pwr7"
3152 *) conftest_s=' .machine power7
3157 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3158 gcc_cv_as_powerpc_vsx, [9,99,0], -a32,
3160 [AC_DEFINE(HAVE_AS_VSX, 1,
3161 [Define if your assembler supports VSX instructions.])])
3163 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3164 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3165 [.gnu_attribute 4,1],,
3166 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3167 [Define if your assembler supports .gnu_attribute.])])
3171 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3172 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3173 [ lw $4,%gp_rel(foo)($4)],,
3174 [if test x$target_cpu_default = x
3175 then target_cpu_default=MASK_EXPLICIT_RELOCS
3176 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3178 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3179 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3180 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3181 [Define if the assembler understands -mno-shared.])])
3183 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3184 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3185 [.gnu_attribute 4,1],,
3186 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3187 [Define if your assembler supports .gnu_attribute.])])
3189 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3190 gcc_cv_as_mips_dtprelword, [2,18,0],,
3191 [.section .tdata,"awT",@progbits
3195 .dtprelword x+0x8000],,
3196 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3197 [Define if your assembler supports .dtprelword.])])
3201 # Mips and HP-UX need the GNU assembler.
3202 # Linux on IA64 might be able to use the Intel assembler.
3205 mips*-*-* | *-*-hpux* )
3206 if test x$gas_flag = xyes \
3207 || test x"$host" != x"$build" \
3208 || test ! -x "$gcc_cv_as" \
3209 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3212 echo "*** This configuration requires the GNU assembler" >&2
3218 # ??? Not all targets support dwarf2 debug_line, even within a version
3219 # of gas. Moreover, we need to emit a valid instruction to trigger any
3220 # info to the output file. So, as supported targets are added to gas 2.11,
3221 # add some instruction here to (also) show we expect this might work.
3222 # ??? Once 2.11 is released, probably need to add first known working
3223 # version to the per-target configury.
3225 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3226 | x86_64*-*-* | hppa*-*-* | arm*-*-* \
3227 | xstormy16*-*-* | cris-*-* | crisv32-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \
3228 | spu-*-* | fido*-*-* | m32c-*-*)
3231 ia64*-*-* | s390*-*-*)
3238 if test x"$insn" != x; then
3240 .file 1 \"conftest.s\"
3243 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3244 gcc_cv_as_dwarf2_debug_line,
3245 [elf,2,11,0],, [$conftest_s],
3246 [if test x$gcc_cv_objdump != x \
3247 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3248 | grep debug_line > /dev/null 2>&1; then
3249 gcc_cv_as_dwarf2_debug_line=yes
3252 # The .debug_line file table must be in the exact order that
3253 # we specified the files, since these indices are also used
3254 # by DW_AT_decl_file. Approximate this test by testing if
3255 # the assembler bitches if the same index is assigned twice.
3256 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3257 gcc_cv_as_dwarf2_file_buggy,,,
3261 if test $gcc_cv_as_dwarf2_debug_line = yes \
3262 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3263 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3264 [Define if your assembler supports dwarf2 .file/.loc directives,
3265 and preserves file table indices exactly as given.])
3268 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3269 gcc_cv_as_gdwarf2_flag,
3270 [elf,2,11,0], [--gdwarf2], [$insn],,
3271 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3272 [Define if your assembler supports the --gdwarf2 option.])])
3274 gcc_GAS_CHECK_FEATURE([--gstabs option],
3275 gcc_cv_as_gstabs_flag,
3276 [elf,2,11,0], [--gstabs], [$insn],
3277 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3278 # and warns about it, but still exits successfully. So check for
3280 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3282 else gcc_cv_as_gstabs_flag=yes
3284 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3285 [Define if your assembler supports the --gstabs option.])])
3287 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3288 gcc_cv_as_debug_prefix_map_flag,
3289 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3290 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3291 [Define if your assembler supports the --debug-prefix-map option.])])
3294 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3297 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3298 [Define if your assembler supports .lcomm with an alignment field.])])
3300 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3301 [gcc_cv_as_line_zero],
3302 [gcc_cv_as_line_zero=no
3303 if test $in_tree_gas = yes; then
3304 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3305 elif test "x$gcc_cv_as" != x; then
3306 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3307 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3308 test "x`cat conftest.out`" = x
3310 gcc_cv_as_line_zero=yes
3312 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3313 cat conftest.s >&AS_MESSAGE_LOG_FD
3314 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3315 cat conftest.out >&AS_MESSAGE_LOG_FD
3317 rm -f conftest.o conftest.s conftest.out
3319 if test "x$gcc_cv_as_line_zero" = xyes; then
3320 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3321 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3324 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3325 gcc_cv_ld_eh_frame_hdr=no
3326 if test $in_tree_ld = yes ; then
3327 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3328 && test $in_tree_ld_is_elf = yes; then
3329 gcc_cv_ld_eh_frame_hdr=yes
3331 elif test x$gcc_cv_ld != x; then
3332 # Check if linker supports --eh-frame-hdr option
3333 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3334 gcc_cv_ld_eh_frame_hdr=yes
3337 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3338 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3339 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3340 [Define if your linker supports --eh-frame-hdr option.])
3342 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3344 AC_MSG_CHECKING(linker position independent executable support)
3346 if test $in_tree_ld = yes ; then
3347 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3348 && test $in_tree_ld_is_elf = yes; then
3351 elif test x$gcc_cv_ld != x; then
3352 # Check if linker supports -pie option
3353 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3357 if test x"$gcc_cv_ld_pie" = xyes; then
3358 AC_DEFINE(HAVE_LD_PIE, 1,
3359 [Define if your linker supports -pie option.])
3361 AC_MSG_RESULT($gcc_cv_ld_pie)
3363 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3364 gcc_cv_ld_eh_gc_sections=no
3365 if test $in_tree_ld = yes ; then
3366 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3367 && test $in_tree_ld_is_elf = yes; then
3368 gcc_cv_ld_eh_gc_sections=yes
3370 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3371 cat > conftest.s <<EOF
3374 .type _start, @function
3377 .size _start, .-_start
3378 .section .text.foo,"ax",@progbits
3379 .type foo, @function
3383 .section .gcc_except_table.foo,"a",@progbits
3386 .section .eh_frame,"a",@progbits
3389 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3390 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3391 | grep "gc-sections option ignored" > /dev/null; then
3392 gcc_cv_ld_eh_gc_sections=no
3393 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3394 gcc_cv_ld_eh_gc_sections=yes
3395 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3396 if test x$gcc_cv_as_comdat_group != xyes; then
3397 gcc_cv_ld_eh_gc_sections=no
3398 cat > conftest.s <<EOF
3401 .type _start, @function
3404 .size _start, .-_start
3405 .section .gnu.linkonce.t.foo,"ax",@progbits
3406 .type foo, @function
3410 .section .gcc_except_table.foo,"a",@progbits
3413 .section .eh_frame,"a",@progbits
3416 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3417 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3418 | grep "gc-sections option ignored" > /dev/null; then
3419 gcc_cv_ld_eh_gc_sections=no
3420 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3421 gcc_cv_ld_eh_gc_sections=yes
3427 rm -f conftest.s conftest.o conftest
3431 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3432 gcc_cv_ld_eh_gc_sections=no
3435 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3436 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3437 [Define if your linker supports garbage collection of
3438 sections in presence of EH frames.])
3440 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3446 AC_CACHE_CHECK(linker --as-needed support,
3447 gcc_cv_ld_as_needed,
3448 [gcc_cv_ld_as_needed=no
3449 if test $in_tree_ld = yes ; then
3450 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3451 && test $in_tree_ld_is_elf = yes; then
3452 gcc_cv_ld_as_needed=yes
3454 elif test x$gcc_cv_ld != x; then
3455 # Check if linker supports --as-needed and --no-as-needed options
3456 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3457 gcc_cv_ld_as_needed=yes
3461 if test x"$gcc_cv_ld_as_needed" = xyes; then
3462 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3463 [Define if your linker supports --as-needed and --no-as-needed options.])
3466 case "$target:$tm_file" in
3467 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3468 AC_CACHE_CHECK(linker support for omitting dot symbols,
3469 gcc_cv_ld_no_dot_syms,
3470 [gcc_cv_ld_no_dot_syms=no
3471 if test $in_tree_ld = yes ; then
3472 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3473 gcc_cv_ld_no_dot_syms=yes
3475 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3476 cat > conftest1.s <<EOF
3480 cat > conftest2.s <<EOF
3481 .section ".opd","aw"
3486 .quad .LEfoo,.TOC.@tocbase,0
3492 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3493 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3494 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3495 gcc_cv_ld_no_dot_syms=yes
3497 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3500 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3501 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3502 [Define if your PowerPC64 linker only needs function descriptor syms.])
3507 AC_CACHE_CHECK(linker --sysroot support,
3509 [gcc_cv_ld_sysroot=no
3510 if test $in_tree_ld = yes ; then
3511 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3512 gcc_cv_ld_sysroot=yes
3514 elif test x$gcc_cv_ld != x; then
3515 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3516 gcc_cv_ld_sysroot=yes
3519 if test x"$gcc_cv_ld_sysroot" = xyes; then
3520 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3521 [Define if your linker supports --sysroot.])
3524 if test x$with_sysroot = x && test x$host = x$target \
3525 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3526 && test "$prefix" != "NONE"; then
3527 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3528 [Define to PREFIX/include if cpp should also search that directory.])
3531 # Test for stack protector support in target C library.
3532 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3533 gcc_cv_libc_provides_ssp,
3534 [gcc_cv_libc_provides_ssp=no
3536 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
3537 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3538 if test "x$with_sysroot" = x; then
3539 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3540 elif test "x$with_build_sysroot" != "x"; then
3541 glibc_header_dir="${with_build_sysroot}/usr/include"
3542 elif test "x$with_sysroot" = xyes; then
3543 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3545 glibc_header_dir="${with_sysroot}/usr/include"
3548 glibc_header_dir=/usr/include
3550 # glibc 2.4 and later provides __stack_chk_fail and
3551 # either __stack_chk_guard, or TLS access to stack guard canary.
3552 if test -f $glibc_header_dir/features.h \
3553 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3554 $glibc_header_dir/features.h > /dev/null; then
3555 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3556 $glibc_header_dir/features.h > /dev/null; then
3557 gcc_cv_libc_provides_ssp=yes
3558 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3559 $glibc_header_dir/features.h > /dev/null \
3560 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3561 $glibc_header_dir/features.h > /dev/null; then
3562 gcc_cv_libc_provides_ssp=yes
3563 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
3564 $glibc_header_dir/features.h > /dev/null && \
3565 test -f $glibc_header_dir/bits/uClibc_config.h && \
3566 $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
3567 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
3568 gcc_cv_libc_provides_ssp=yes
3573 # Avoid complicated tests (see
3574 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
3575 # simply assert that glibc does provide this, which is true for all
3576 # realistically usable GNU/Hurd configurations.
3577 gcc_cv_libc_provides_ssp=yes;;
3579 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3580 [echo "no __stack_chk_fail on this target"])
3582 *) gcc_cv_libc_provides_ssp=no ;;
3585 if test x$gcc_cv_libc_provides_ssp = xyes; then
3586 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3587 [Define if your target C library provides stack protector support])
3590 # Check if TFmode long double should be used by default or not.
3591 # Some glibc targets used DFmode long double, but with glibc 2.4
3592 # and later they can use TFmode.
3594 powerpc*-*-linux* | \
3599 AC_ARG_WITH(long-double-128,
3600 [ --with-long-double-128 Use 128-bit long double by default.],
3601 gcc_cv_target_ldbl128="$with_long_double_128",
3602 [gcc_cv_target_ldbl128=no
3603 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3604 if test "x$with_sysroot" = x; then
3605 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3606 elif test "x$with_build_sysroot" != "x"; then
3607 glibc_header_dir="${with_build_sysroot}/usr/include"
3608 elif test "x$with_sysroot" = xyes; then
3609 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3611 glibc_header_dir="${with_sysroot}/usr/include"
3614 glibc_header_dir=/usr/include
3617 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3618 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3619 && gcc_cv_target_ldbl128=yes
3624 if test x$gcc_cv_target_ldbl128 = xyes; then
3625 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3626 [Define if TFmode long double should be the default])
3629 # Find out what GC implementation we want, or may, use.
3631 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3639 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3642 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3647 echo "Using $GGC for garbage collection."
3649 # Use the system's zlib library.
3651 zlibinc="-I\$(srcdir)/../zlib"
3652 AC_ARG_WITH(system-zlib,
3653 [ --with-system-zlib use installed libz],
3660 dnl Very limited version of automake's enable-maintainer-mode
3662 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3663 dnl maintainer-mode is disabled by default
3664 AC_ARG_ENABLE(maintainer-mode,
3665 [ --enable-maintainer-mode
3666 enable make rules and dependencies not useful
3667 (and sometimes confusing) to the casual installer],
3668 maintainer_mode=$enableval,
3671 AC_MSG_RESULT($maintainer_mode)
3673 if test "$maintainer_mode" = "yes"; then
3684 # Make empty files to contain the specs and options for each language.
3685 # Then add #include lines to for a compiler that has specs and/or options.
3691 # These (without "all_") are set in each config-lang.in.
3692 # `language' must be a single word so is spelled singularly.
3695 all_outputs='Makefile gccbug'
3696 # List of language makefile fragments.
3698 # List of language subdirectory makefiles. Deprecated.
3700 # Additional files for gengtype
3701 all_gtfiles="$target_gtfiles"
3703 # These are the languages that are set in --enable-languages,
3704 # and are available in the GCC tree.
3705 all_selected_languages=
3707 # Add the language fragments.
3708 # Languages are added via two mechanisms. Some information must be
3709 # recorded in makefile variables, these are defined in config-lang.in.
3710 # We accumulate them and plug them into the main Makefile.
3711 # The other mechanism is a set of hooks for each of the main targets
3712 # like `clean', `install', etc.
3714 language_hooks="Make-hooks"
3716 for lang in ${srcdir}/*/config-lang.in
3719 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3721 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3722 if test "x$lang_alias" = x
3724 echo "$lang doesn't set \$language." 1>&2
3727 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3728 subdirs="$subdirs $subdir"
3730 # $gcc_subdir is where the gcc integration files are to be found
3731 # for a language, both for internal compiler purposes (compiler
3732 # sources implementing front-end to GCC tree converters), and for
3733 # build infrastructure purposes (Make-lang.in, etc.)
3735 # This will be <subdir> (relative to $srcdir) if a line like
3736 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
3737 # is found in <langdir>/config-lang.in, and will remain <langdir>
3740 # Except for the language alias (fetched above), the regular
3741 # "config-lang.in" contents are always retrieved from $gcc_subdir,
3742 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
3743 # only this and the language alias.
3745 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
3746 if [ "$gcc_subdir" = "" ]; then
3747 gcc_subdir="$subdir"
3750 case ",$enable_languages," in
3752 all_selected_languages="$all_selected_languages $lang_alias"
3753 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
3754 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
3766 . ${srcdir}/$gcc_subdir/config-lang.in
3767 if test "x$language" = x
3769 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
3774 case ",$enable_languages," in
3777 for i in $subdir_requires; do
3778 test -f "${srcdir}/$i/config-lang.in" && continue
3786 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
3787 if test -f $srcdir/$gcc_subdir/lang.opt; then
3788 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
3790 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
3791 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
3793 if test -f ${srcdir}/$gcc_subdir/Makefile.in
3794 then all_lang_makefiles="$gcc_subdir/Makefile"
3796 all_languages="$all_languages $language"
3797 all_compilers="$all_compilers $compilers"
3798 all_outputs="$all_outputs $outputs"
3799 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
3802 # Pick up gtfiles for c
3804 . ${srcdir}/c-config-lang.in
3805 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
3808 for language in $all_selected_languages
3810 check_languages="$check_languages check-$language"
3813 # We link each language in with a set of hooks, reached indirectly via
3814 # lang.${target}. Only do so for selected languages.
3818 target_list="all.cross start.encap rest.encap tags \
3819 install-common install-man install-info install-pdf dvi pdf \
3820 html uninstall info man srcextra srcman srcinfo \
3821 mostlyclean clean distclean maintainer-clean"
3823 for t in $target_list
3826 for lang in $all_selected_languages
3830 echo "lang.$t: $x" >> Make-hooks
3839 echo "dir ." > .gdbinit
3840 echo "dir ${srcdir}" >> .gdbinit
3841 if test x$gdb_needs_out_file_path = xyes
3843 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3845 if test "x$subdirs" != x; then
3848 echo "dir ${srcdir}/$s" >> .gdbinit
3851 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3853 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
3854 AC_SUBST(gcc_tooldir)
3857 # Find a directory in which to install a shared libgcc.
3859 AC_ARG_ENABLE(version-specific-runtime-libs,
3860 [ --enable-version-specific-runtime-libs
3861 specify that runtime libraries should be
3862 installed in a compiler-specific directory])
3864 AC_ARG_WITH(slibdir,
3865 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3866 slibdir="$with_slibdir",
3867 if test "${enable_version_specific_runtime_libs+set}" = set; then
3868 slibdir='$(libsubdir)'
3869 elif test "$host" != "$target"; then
3870 slibdir='$(build_tooldir)/lib'
3876 AC_ARG_WITH(datarootdir,
3877 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3878 datarootdir="\${prefix}/$with_datarootdir",
3879 datarootdir='$(prefix)/share')
3880 AC_SUBST(datarootdir)
3883 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3884 docdir="\${prefix}/$with_docdir",
3885 docdir='$(datarootdir)')
3888 AC_ARG_WITH(htmldir,
3889 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3890 htmldir="\${prefix}/$with_htmldir",
3891 htmldir='$(docdir)')
3894 # Substitute configuration variables
3897 AC_SUBST(all_compilers)
3898 AC_SUBST(all_gtfiles)
3899 AC_SUBST(all_lang_makefrags)
3900 AC_SUBST(all_lang_makefiles)
3901 AC_SUBST(all_languages)
3902 AC_SUBST(all_selected_languages)
3903 AC_SUBST(build_exeext)
3904 AC_SUBST(build_install_headers_dir)
3905 AC_SUBST(build_xm_file_list)
3906 AC_SUBST(build_xm_include_list)
3907 AC_SUBST(build_xm_defines)
3908 AC_SUBST(build_file_translate)
3909 AC_SUBST(check_languages)
3910 AC_SUBST(cpp_install_dir)
3911 AC_SUBST(xmake_file)
3912 AC_SUBST(tmake_file)
3913 AC_SUBST(extra_gcc_objs)
3914 AC_SUBST(extra_headers_list)
3915 AC_SUBST(extra_objs)
3916 AC_SUBST(extra_parts)
3917 AC_SUBST(extra_passes)
3918 AC_SUBST(extra_programs)
3919 AC_SUBST(float_h_file)
3920 AC_SUBST(gcc_config_arguments)
3921 AC_SUBST(gcc_gxx_include_dir)
3922 AC_SUBST(host_exeext)
3923 AC_SUBST(host_xm_file_list)
3924 AC_SUBST(host_xm_include_list)
3925 AC_SUBST(host_xm_defines)
3926 AC_SUBST(out_host_hook_obj)
3928 AC_SUBST(lang_opt_files)
3929 AC_SUBST(lang_specs_files)
3930 AC_SUBST(lang_tree_files)
3931 AC_SUBST(local_prefix)
3933 AC_SUBST(objc_boehm_gc)
3935 AC_SUBST(out_object_file)
3936 AC_SUBST(thread_file)
3937 AC_SUBST(tm_file_list)
3938 AC_SUBST(tm_include_list)
3939 AC_SUBST(tm_defines)
3940 AC_SUBST(tm_p_file_list)
3941 AC_SUBST(tm_p_include_list)
3942 AC_SUBST(xm_file_list)
3943 AC_SUBST(xm_include_list)
3944 AC_SUBST(xm_defines)
3945 AC_SUBST(c_target_objs)
3946 AC_SUBST(cxx_target_objs)
3947 AC_SUBST(fortran_target_objs)
3948 AC_SUBST(target_cpu_default)
3950 AC_SUBST_FILE(language_hooks)
3953 if test x${build} = x${host} ; then
3954 if test x${host} = x${target} ; then
3955 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3957 echo "Links are now set up to build a cross-compiler" 1>&2
3958 echo " from ${host} to ${target}." 1>&2
3961 if test x${host} = x${target} ; then
3962 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3963 echo " for ${target}." 1>&2
3965 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3966 echo " from ${host} to ${target}." 1>&2
3970 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3971 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3973 AC_ARG_VAR(PPLLIBS,[How to link PPL])
3974 AC_ARG_VAR(PPLINC,[How to find PPL include files])
3976 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
3977 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
3978 if test "x${CLOOGLIBS}" != "x" ; then
3979 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
3982 # Configure the subdirectories
3983 # AC_CONFIG_SUBDIRS($subdirs)
3985 # Create the Makefile
3986 # and configure language subdirectories
3987 AC_CONFIG_FILES($all_outputs)
3989 AC_CONFIG_COMMANDS([default],
3991 case ${CONFIG_HEADERS} in
3992 *auto-host.h:config.in*)
3995 # Make sure all the subdirs exist.
3996 for d in $subdirs doc build
3998 test -d $d || mkdir $d
4001 [subdirs='$subdirs'])